aboutsummaryrefslogtreecommitdiff
path: root/src/nvim/eval.c
diff options
context:
space:
mode:
Diffstat (limited to 'src/nvim/eval.c')
-rw-r--r--src/nvim/eval.c19819
1 files changed, 19819 insertions, 0 deletions
diff --git a/src/nvim/eval.c b/src/nvim/eval.c
new file mode 100644
index 0000000000..98ab1ea2fe
--- /dev/null
+++ b/src/nvim/eval.c
@@ -0,0 +1,19819 @@
+/*
+ * VIM - Vi IMproved by Bram Moolenaar
+ *
+ * Do ":help uganda" in Vim to read copying and usage conditions.
+ * Do ":help credits" in Vim to see a list of people who contributed.
+ * See README.txt for an overview of the Vim source code.
+ */
+
+/*
+ * eval.c: Expression evaluation.
+ */
+
+#include <string.h>
+#include <stdlib.h>
+
+#include "vim.h"
+#include "eval.h"
+#include "buffer.h"
+#include "charset.h"
+#include "diff.h"
+#include "edit.h"
+#include "ex_cmds.h"
+#include "ex_cmds2.h"
+#include "ex_docmd.h"
+#include "ex_eval.h"
+#include "ex_getln.h"
+#include "fileio.h"
+#include "fold.h"
+#include "getchar.h"
+#include "hashtab.h"
+#include "if_cscope.h"
+#include "indent_c.h"
+#include "indent.h"
+#include "mark.h"
+#include "mbyte.h"
+#include "memline.h"
+#include "memory.h"
+#include "message.h"
+#include "misc1.h"
+#include "misc2.h"
+#include "keymap.h"
+#include "file_search.h"
+#include "garray.h"
+#include "move.h"
+#include "normal.h"
+#include "ops.h"
+#include "option.h"
+#include "os_unix.h"
+#include "path.h"
+#include "popupmnu.h"
+#include "quickfix.h"
+#include "regexp.h"
+#include "screen.h"
+#include "search.h"
+#include "sha256.h"
+#include "spell.h"
+#include "syntax.h"
+#include "tag.h"
+#include "term.h"
+#include "ui.h"
+#include "undo.h"
+#include "version.h"
+#include "window.h"
+#include "os/os.h"
+#include "os/job.h"
+#include "os/rstream.h"
+#include "os/rstream_defs.h"
+#include "os/time.h"
+
+#if defined(FEAT_FLOAT)
+# include <math.h>
+#endif
+
+#define DICT_MAXNEST 100 /* maximum nesting of lists and dicts */
+
+#define DO_NOT_FREE_CNT 99999 /* refcount for dict or list that should not
+ be freed. */
+
+/*
+ * In a hashtab item "hi_key" points to "di_key" in a dictitem.
+ * This avoids adding a pointer to the hashtab item.
+ * DI2HIKEY() converts a dictitem pointer to a hashitem key pointer.
+ * HIKEY2DI() converts a hashitem key pointer to a dictitem pointer.
+ * HI2DI() converts a hashitem pointer to a dictitem pointer.
+ */
+static dictitem_T dumdi;
+#define DI2HIKEY(di) ((di)->di_key)
+#define HIKEY2DI(p) ((dictitem_T *)(p - (dumdi.di_key - (char_u *)&dumdi)))
+#define HI2DI(hi) HIKEY2DI((hi)->hi_key)
+
+/*
+ * Structure returned by get_lval() and used by set_var_lval().
+ * For a plain name:
+ * "name" points to the variable name.
+ * "exp_name" is NULL.
+ * "tv" is NULL
+ * For a magic braces name:
+ * "name" points to the expanded variable name.
+ * "exp_name" is non-NULL, to be freed later.
+ * "tv" is NULL
+ * For an index in a list:
+ * "name" points to the (expanded) variable name.
+ * "exp_name" NULL or non-NULL, to be freed later.
+ * "tv" points to the (first) list item value
+ * "li" points to the (first) list item
+ * "range", "n1", "n2" and "empty2" indicate what items are used.
+ * For an existing Dict item:
+ * "name" points to the (expanded) variable name.
+ * "exp_name" NULL or non-NULL, to be freed later.
+ * "tv" points to the dict item value
+ * "newkey" is NULL
+ * For a non-existing Dict item:
+ * "name" points to the (expanded) variable name.
+ * "exp_name" NULL or non-NULL, to be freed later.
+ * "tv" points to the Dictionary typval_T
+ * "newkey" is the key for the new item.
+ */
+typedef struct lval_S {
+ char_u *ll_name; /* start of variable name (can be NULL) */
+ char_u *ll_exp_name; /* NULL or expanded name in allocated memory. */
+ typval_T *ll_tv; /* Typeval of item being used. If "newkey"
+ isn't NULL it's the Dict to which to add
+ the item. */
+ listitem_T *ll_li; /* The list item or NULL. */
+ list_T *ll_list; /* The list or NULL. */
+ int ll_range; /* TRUE when a [i:j] range was used */
+ long ll_n1; /* First index for list */
+ long ll_n2; /* Second index for list range */
+ int ll_empty2; /* Second index is empty: [i:] */
+ dict_T *ll_dict; /* The Dictionary or NULL */
+ dictitem_T *ll_di; /* The dictitem or NULL */
+ char_u *ll_newkey; /* New key for Dict in alloc. mem or NULL. */
+} lval_T;
+
+
+static char *e_letunexp = N_("E18: Unexpected characters in :let");
+static char *e_listidx = N_("E684: list index out of range: %" PRId64);
+static char *e_undefvar = N_("E121: Undefined variable: %s");
+static char *e_missbrac = N_("E111: Missing ']'");
+static char *e_listarg = N_("E686: Argument of %s must be a List");
+static char *e_listdictarg = N_(
+ "E712: Argument of %s must be a List or Dictionary");
+static char *e_emptykey = N_("E713: Cannot use empty key for Dictionary");
+static char *e_listreq = N_("E714: List required");
+static char *e_dictreq = N_("E715: Dictionary required");
+static char *e_toomanyarg = N_("E118: Too many arguments for function: %s");
+static char *e_dictkey = N_("E716: Key not present in Dictionary: %s");
+static char *e_funcexts = N_(
+ "E122: Function %s already exists, add ! to replace it");
+static char *e_funcdict = N_("E717: Dictionary entry already exists");
+static char *e_funcref = N_("E718: Funcref required");
+static char *e_dictrange = N_("E719: Cannot use [:] with a Dictionary");
+static char *e_letwrong = N_("E734: Wrong variable type for %s=");
+static char *e_nofunc = N_("E130: Unknown function: %s");
+static char *e_illvar = N_("E461: Illegal variable name: %s");
+static char *e_float_as_string = N_("E806: using Float as a String");
+
+static dictitem_T globvars_var; /* variable used for g: */
+#define globvarht globvardict.dv_hashtab
+
+/*
+ * Old Vim variables such as "v:version" are also available without the "v:".
+ * Also in functions. We need a special hashtable for them.
+ */
+static hashtab_T compat_hashtab;
+
+/*
+ * When recursively copying lists and dicts we need to remember which ones we
+ * have done to avoid endless recursiveness. This unique ID is used for that.
+ * The last bit is used for previous_funccal, ignored when comparing.
+ */
+static int current_copyID = 0;
+#define COPYID_INC 2
+#define COPYID_MASK (~0x1)
+
+/*
+ * Array to hold the hashtab with variables local to each sourced script.
+ * Each item holds a variable (nameless) that points to the dict_T.
+ */
+typedef struct {
+ dictitem_T sv_var;
+ dict_T sv_dict;
+} scriptvar_T;
+
+static garray_T ga_scripts = {0, 0, sizeof(scriptvar_T *), 4, NULL};
+#define SCRIPT_SV(id) (((scriptvar_T **)ga_scripts.ga_data)[(id) - 1])
+#define SCRIPT_VARS(id) (SCRIPT_SV(id)->sv_dict.dv_hashtab)
+
+static int echo_attr = 0; /* attributes used for ":echo" */
+
+/* Values for trans_function_name() argument: */
+#define TFN_INT 1 /* internal function name OK */
+#define TFN_QUIET 2 /* no error messages */
+#define TFN_NO_AUTOLOAD 4 /* do not use script autoloading */
+
+/* Values for get_lval() flags argument: */
+#define GLV_QUIET TFN_QUIET /* no error messages */
+#define GLV_NO_AUTOLOAD TFN_NO_AUTOLOAD /* do not use script autoloading */
+
+/*
+ * Structure to hold info for a user function.
+ */
+typedef struct ufunc ufunc_T;
+
+struct ufunc {
+ int uf_varargs; /* variable nr of arguments */
+ int uf_flags;
+ int uf_calls; /* nr of active calls */
+ garray_T uf_args; /* arguments */
+ garray_T uf_lines; /* function lines */
+ int uf_profiling; /* TRUE when func is being profiled */
+ /* profiling the function as a whole */
+ int uf_tm_count; /* nr of calls */
+ proftime_T uf_tm_total; /* time spent in function + children */
+ proftime_T uf_tm_self; /* time spent in function itself */
+ proftime_T uf_tm_children; /* time spent in children this call */
+ /* profiling the function per line */
+ int *uf_tml_count; /* nr of times line was executed */
+ proftime_T *uf_tml_total; /* time spent in a line + children */
+ proftime_T *uf_tml_self; /* time spent in a line itself */
+ proftime_T uf_tml_start; /* start time for current line */
+ proftime_T uf_tml_children; /* time spent in children for this line */
+ proftime_T uf_tml_wait; /* start wait time for current line */
+ int uf_tml_idx; /* index of line being timed; -1 if none */
+ int uf_tml_execed; /* line being timed was executed */
+ scid_T uf_script_ID; /* ID of script where function was defined,
+ used for s: variables */
+ int uf_refcount; /* for numbered function: reference count */
+ char_u uf_name[1]; /* name of function (actually longer); can
+ start with <SNR>123_ (<SNR> is K_SPECIAL
+ KS_EXTRA KE_SNR) */
+};
+
+/* function flags */
+#define FC_ABORT 1 /* abort function on error */
+#define FC_RANGE 2 /* function accepts range */
+#define FC_DICT 4 /* Dict function, uses "self" */
+
+/*
+ * All user-defined functions are found in this hashtable.
+ */
+static hashtab_T func_hashtab;
+
+/* The names of packages that once were loaded are remembered. */
+static garray_T ga_loaded = {0, 0, sizeof(char_u *), 4, NULL};
+
+/* list heads for garbage collection */
+static dict_T *first_dict = NULL; /* list of all dicts */
+static list_T *first_list = NULL; /* list of all lists */
+
+/* From user function to hashitem and back. */
+static ufunc_T dumuf;
+#define UF2HIKEY(fp) ((fp)->uf_name)
+#define HIKEY2UF(p) ((ufunc_T *)(p - (dumuf.uf_name - (char_u *)&dumuf)))
+#define HI2UF(hi) HIKEY2UF((hi)->hi_key)
+
+#define FUNCARG(fp, j) ((char_u **)(fp->uf_args.ga_data))[j]
+#define FUNCLINE(fp, j) ((char_u **)(fp->uf_lines.ga_data))[j]
+
+#define MAX_FUNC_ARGS 20 /* maximum number of function arguments */
+#define VAR_SHORT_LEN 20 /* short variable name length */
+#define FIXVAR_CNT 12 /* number of fixed variables */
+
+/* structure to hold info for a function that is currently being executed. */
+typedef struct funccall_S funccall_T;
+
+struct funccall_S {
+ ufunc_T *func; /* function being called */
+ int linenr; /* next line to be executed */
+ int returned; /* ":return" used */
+ struct /* fixed variables for arguments */
+ {
+ dictitem_T var; /* variable (without room for name) */
+ char_u room[VAR_SHORT_LEN]; /* room for the name */
+ } fixvar[FIXVAR_CNT];
+ dict_T l_vars; /* l: local function variables */
+ dictitem_T l_vars_var; /* variable for l: scope */
+ dict_T l_avars; /* a: argument variables */
+ dictitem_T l_avars_var; /* variable for a: scope */
+ list_T l_varlist; /* list for a:000 */
+ listitem_T l_listitems[MAX_FUNC_ARGS]; /* listitems for a:000 */
+ typval_T *rettv; /* return value */
+ linenr_T breakpoint; /* next line with breakpoint or zero */
+ int dbg_tick; /* debug_tick when breakpoint was set */
+ int level; /* top nesting level of executed function */
+ proftime_T prof_child; /* time spent in a child */
+ funccall_T *caller; /* calling function or NULL */
+};
+
+/*
+ * Info used by a ":for" loop.
+ */
+typedef struct {
+ int fi_semicolon; /* TRUE if ending in '; var]' */
+ int fi_varcount; /* nr of variables in the list */
+ listwatch_T fi_lw; /* keep an eye on the item used. */
+ list_T *fi_list; /* list being used */
+} forinfo_T;
+
+/*
+ * Struct used by trans_function_name()
+ */
+typedef struct {
+ dict_T *fd_dict; /* Dictionary used */
+ char_u *fd_newkey; /* new key in "dict" in allocated memory */
+ dictitem_T *fd_di; /* Dictionary item used */
+} funcdict_T;
+
+
+/*
+ * Array to hold the value of v: variables.
+ * The value is in a dictitem, so that it can also be used in the v: scope.
+ * The reason to use this table anyway is for very quick access to the
+ * variables with the VV_ defines.
+ */
+#include "version_defs.h"
+
+/* values for vv_flags: */
+#define VV_COMPAT 1 /* compatible, also used without "v:" */
+#define VV_RO 2 /* read-only */
+#define VV_RO_SBX 4 /* read-only in the sandbox */
+
+#define VV_NAME(s, t) s, {{t, 0, {0}}, 0, {0}}, {0}
+
+static struct vimvar {
+ char *vv_name; /* name of variable, without v: */
+ dictitem_T vv_di; /* value and name for key */
+ char vv_filler[16]; /* space for LONGEST name below!!! */
+ char vv_flags; /* VV_COMPAT, VV_RO, VV_RO_SBX */
+} vimvars[VV_LEN] =
+{
+ /*
+ * The order here must match the VV_ defines in vim.h!
+ * Initializing a union does not work, leave tv.vval empty to get zero's.
+ */
+ {VV_NAME("count", VAR_NUMBER), VV_COMPAT+VV_RO},
+ {VV_NAME("count1", VAR_NUMBER), VV_RO},
+ {VV_NAME("prevcount", VAR_NUMBER), VV_RO},
+ {VV_NAME("errmsg", VAR_STRING), VV_COMPAT},
+ {VV_NAME("warningmsg", VAR_STRING), 0},
+ {VV_NAME("statusmsg", VAR_STRING), 0},
+ {VV_NAME("shell_error", VAR_NUMBER), VV_COMPAT+VV_RO},
+ {VV_NAME("this_session", VAR_STRING), VV_COMPAT},
+ {VV_NAME("version", VAR_NUMBER), VV_COMPAT+VV_RO},
+ {VV_NAME("lnum", VAR_NUMBER), VV_RO_SBX},
+ {VV_NAME("termresponse", VAR_STRING), VV_RO},
+ {VV_NAME("fname", VAR_STRING), VV_RO},
+ {VV_NAME("lang", VAR_STRING), VV_RO},
+ {VV_NAME("lc_time", VAR_STRING), VV_RO},
+ {VV_NAME("ctype", VAR_STRING), VV_RO},
+ {VV_NAME("charconvert_from", VAR_STRING), VV_RO},
+ {VV_NAME("charconvert_to", VAR_STRING), VV_RO},
+ {VV_NAME("fname_in", VAR_STRING), VV_RO},
+ {VV_NAME("fname_out", VAR_STRING), VV_RO},
+ {VV_NAME("fname_new", VAR_STRING), VV_RO},
+ {VV_NAME("fname_diff", VAR_STRING), VV_RO},
+ {VV_NAME("cmdarg", VAR_STRING), VV_RO},
+ {VV_NAME("foldstart", VAR_NUMBER), VV_RO_SBX},
+ {VV_NAME("foldend", VAR_NUMBER), VV_RO_SBX},
+ {VV_NAME("folddashes", VAR_STRING), VV_RO_SBX},
+ {VV_NAME("foldlevel", VAR_NUMBER), VV_RO_SBX},
+ {VV_NAME("progname", VAR_STRING), VV_RO},
+ {VV_NAME("servername", VAR_STRING), VV_RO},
+ {VV_NAME("dying", VAR_NUMBER), VV_RO},
+ {VV_NAME("exception", VAR_STRING), VV_RO},
+ {VV_NAME("throwpoint", VAR_STRING), VV_RO},
+ {VV_NAME("register", VAR_STRING), VV_RO},
+ {VV_NAME("cmdbang", VAR_NUMBER), VV_RO},
+ {VV_NAME("insertmode", VAR_STRING), VV_RO},
+ {VV_NAME("val", VAR_UNKNOWN), VV_RO},
+ {VV_NAME("key", VAR_UNKNOWN), VV_RO},
+ {VV_NAME("profiling", VAR_NUMBER), VV_RO},
+ {VV_NAME("fcs_reason", VAR_STRING), VV_RO},
+ {VV_NAME("fcs_choice", VAR_STRING), 0},
+ {VV_NAME("beval_bufnr", VAR_NUMBER), VV_RO},
+ {VV_NAME("beval_winnr", VAR_NUMBER), VV_RO},
+ {VV_NAME("beval_lnum", VAR_NUMBER), VV_RO},
+ {VV_NAME("beval_col", VAR_NUMBER), VV_RO},
+ {VV_NAME("beval_text", VAR_STRING), VV_RO},
+ {VV_NAME("scrollstart", VAR_STRING), 0},
+ {VV_NAME("swapname", VAR_STRING), VV_RO},
+ {VV_NAME("swapchoice", VAR_STRING), 0},
+ {VV_NAME("swapcommand", VAR_STRING), VV_RO},
+ {VV_NAME("char", VAR_STRING), 0},
+ {VV_NAME("mouse_win", VAR_NUMBER), 0},
+ {VV_NAME("mouse_lnum", VAR_NUMBER), 0},
+ {VV_NAME("mouse_col", VAR_NUMBER), 0},
+ {VV_NAME("operator", VAR_STRING), VV_RO},
+ {VV_NAME("searchforward", VAR_NUMBER), 0},
+ {VV_NAME("hlsearch", VAR_NUMBER), 0},
+ {VV_NAME("oldfiles", VAR_LIST), 0},
+ {VV_NAME("windowid", VAR_NUMBER), VV_RO},
+ {VV_NAME("progpath", VAR_STRING), VV_RO},
+ {VV_NAME("job_data", VAR_LIST), 0}
+};
+
+/* shorthand */
+#define vv_type vv_di.di_tv.v_type
+#define vv_nr vv_di.di_tv.vval.v_number
+#define vv_float vv_di.di_tv.vval.v_float
+#define vv_str vv_di.di_tv.vval.v_string
+#define vv_list vv_di.di_tv.vval.v_list
+#define vv_tv vv_di.di_tv
+
+static dictitem_T vimvars_var; /* variable used for v: */
+#define vimvarht vimvardict.dv_hashtab
+
+static void on_job_stdout(RStream *rstream, void *data, bool eof);
+static void on_job_stderr(RStream *rstream, void *data, bool eof);
+static void on_job_exit(Job *job, void *data);
+static void on_job_data(RStream *rstream, void *data, bool eof, char *type);
+static void apply_job_autocmds(Job *job, char *name, char *type, char *str);
+static void prepare_vimvar(int idx, typval_T *save_tv);
+static void restore_vimvar(int idx, typval_T *save_tv);
+static int ex_let_vars(char_u *arg, typval_T *tv, int copy,
+ int semicolon, int var_count,
+ char_u *nextchars);
+static char_u *skip_var_list(char_u *arg, int *var_count,
+ int *semicolon);
+static char_u *skip_var_one(char_u *arg);
+static void list_hashtable_vars(hashtab_T *ht, char_u *prefix,
+ int empty,
+ int *first);
+static void list_glob_vars(int *first);
+static void list_buf_vars(int *first);
+static void list_win_vars(int *first);
+static void list_tab_vars(int *first);
+static void list_vim_vars(int *first);
+static void list_script_vars(int *first);
+static void list_func_vars(int *first);
+static char_u *list_arg_vars(exarg_T *eap, char_u *arg, int *first);
+static char_u *ex_let_one(char_u *arg, typval_T *tv, int copy,
+ char_u *endchars, char_u *op);
+static int check_changedtick(char_u *arg);
+static char_u *get_lval(char_u *name, typval_T *rettv, lval_T *lp,
+ int unlet, int skip, int flags,
+ int fne_flags);
+static void clear_lval(lval_T *lp);
+static void set_var_lval(lval_T *lp, char_u *endp, typval_T *rettv,
+ int copy,
+ char_u *op);
+static int tv_op(typval_T *tv1, typval_T *tv2, char_u *op);
+static void list_fix_watch(list_T *l, listitem_T *item);
+static void ex_unletlock(exarg_T *eap, char_u *argstart, int deep);
+static int do_unlet_var(lval_T *lp, char_u *name_end, int forceit);
+static int do_lock_var(lval_T *lp, char_u *name_end, int deep, int lock);
+static void item_lock(typval_T *tv, int deep, int lock);
+static int tv_islocked(typval_T *tv);
+
+static int eval0(char_u *arg, typval_T *rettv, char_u **nextcmd,
+ int evaluate);
+static int eval1(char_u **arg, typval_T *rettv, int evaluate);
+static int eval2(char_u **arg, typval_T *rettv, int evaluate);
+static int eval3(char_u **arg, typval_T *rettv, int evaluate);
+static int eval4(char_u **arg, typval_T *rettv, int evaluate);
+static int eval5(char_u **arg, typval_T *rettv, int evaluate);
+static int eval6(char_u **arg, typval_T *rettv, int evaluate,
+ int want_string);
+static int eval7(char_u **arg, typval_T *rettv, int evaluate,
+ int want_string);
+
+static int eval_index(char_u **arg, typval_T *rettv, int evaluate,
+ int verbose);
+static int get_option_tv(char_u **arg, typval_T *rettv, int evaluate);
+static int get_string_tv(char_u **arg, typval_T *rettv, int evaluate);
+static int get_lit_string_tv(char_u **arg, typval_T *rettv, int evaluate);
+static int get_list_tv(char_u **arg, typval_T *rettv, int evaluate);
+static void rettv_list_alloc(typval_T *rettv);
+static long list_len(list_T *l);
+static int list_equal(list_T *l1, list_T *l2, int ic, int recursive);
+static int dict_equal(dict_T *d1, dict_T *d2, int ic, int recursive);
+static int tv_equal(typval_T *tv1, typval_T *tv2, int ic, int recursive);
+static long list_find_nr(list_T *l, long idx, int *errorp);
+static long list_idx_of_item(list_T *l, listitem_T *item);
+static void list_append_number(list_T *l, varnumber_T n);
+static int list_extend(list_T *l1, list_T *l2, listitem_T *bef);
+static int list_concat(list_T *l1, list_T *l2, typval_T *tv);
+static list_T *list_copy(list_T *orig, int deep, int copyID);
+static char_u *list2string(typval_T *tv, int copyID);
+static int list_join_inner(garray_T *gap, list_T *l, char_u *sep,
+ int echo_style, int copyID,
+ garray_T *join_gap);
+static int list_join(garray_T *gap, list_T *l, char_u *sep, int echo,
+ int copyID);
+static int free_unref_items(int copyID);
+static int rettv_dict_alloc(typval_T *rettv);
+static dictitem_T *dictitem_copy(dictitem_T *org);
+static void dictitem_remove(dict_T *dict, dictitem_T *item);
+static dict_T *dict_copy(dict_T *orig, int deep, int copyID);
+static long dict_len(dict_T *d);
+static char_u *dict2string(typval_T *tv, int copyID);
+static int get_dict_tv(char_u **arg, typval_T *rettv, int evaluate);
+static char_u *echo_string(typval_T *tv, char_u **tofree,
+ char_u *numbuf,
+ int copyID);
+static char_u *tv2string(typval_T *tv, char_u **tofree, char_u *numbuf,
+ int copyID);
+static char_u *string_quote(char_u *str, int function);
+static int string2float(char_u *text, float_T *value);
+static int get_env_tv(char_u **arg, typval_T *rettv, int evaluate);
+static int find_internal_func(char_u *name);
+static char_u *deref_func_name(char_u *name, int *lenp, int no_autoload);
+static int get_func_tv(char_u *name, int len, typval_T *rettv,
+ char_u **arg, linenr_T firstline, linenr_T lastline,
+ int *doesrange, int evaluate,
+ dict_T *selfdict);
+static int call_func(char_u *funcname, int len, typval_T *rettv,
+ int argcount, typval_T *argvars,
+ linenr_T firstline, linenr_T lastline,
+ int *doesrange, int evaluate,
+ dict_T *selfdict);
+static void emsg_funcname(char *ermsg, char_u *name);
+static int non_zero_arg(typval_T *argvars);
+
+static void f_abs(typval_T *argvars, typval_T *rettv);
+static void f_acos(typval_T *argvars, typval_T *rettv);
+static void f_add(typval_T *argvars, typval_T *rettv);
+static void f_and(typval_T *argvars, typval_T *rettv);
+static void f_append(typval_T *argvars, typval_T *rettv);
+static void f_argc(typval_T *argvars, typval_T *rettv);
+static void f_argidx(typval_T *argvars, typval_T *rettv);
+static void f_argv(typval_T *argvars, typval_T *rettv);
+static void f_asin(typval_T *argvars, typval_T *rettv);
+static void f_atan(typval_T *argvars, typval_T *rettv);
+static void f_atan2(typval_T *argvars, typval_T *rettv);
+static void f_browse(typval_T *argvars, typval_T *rettv);
+static void f_browsedir(typval_T *argvars, typval_T *rettv);
+static void f_bufexists(typval_T *argvars, typval_T *rettv);
+static void f_buflisted(typval_T *argvars, typval_T *rettv);
+static void f_bufloaded(typval_T *argvars, typval_T *rettv);
+static void f_bufname(typval_T *argvars, typval_T *rettv);
+static void f_bufnr(typval_T *argvars, typval_T *rettv);
+static void f_bufwinnr(typval_T *argvars, typval_T *rettv);
+static void f_byte2line(typval_T *argvars, typval_T *rettv);
+static void byteidx(typval_T *argvars, typval_T *rettv, int comp);
+static void f_byteidx(typval_T *argvars, typval_T *rettv);
+static void f_byteidxcomp(typval_T *argvars, typval_T *rettv);
+static void f_call(typval_T *argvars, typval_T *rettv);
+static void f_ceil(typval_T *argvars, typval_T *rettv);
+static void f_changenr(typval_T *argvars, typval_T *rettv);
+static void f_char2nr(typval_T *argvars, typval_T *rettv);
+static void f_cindent(typval_T *argvars, typval_T *rettv);
+static void f_clearmatches(typval_T *argvars, typval_T *rettv);
+static void f_col(typval_T *argvars, typval_T *rettv);
+static void f_complete(typval_T *argvars, typval_T *rettv);
+static void f_complete_add(typval_T *argvars, typval_T *rettv);
+static void f_complete_check(typval_T *argvars, typval_T *rettv);
+static void f_confirm(typval_T *argvars, typval_T *rettv);
+static void f_copy(typval_T *argvars, typval_T *rettv);
+static void f_cos(typval_T *argvars, typval_T *rettv);
+static void f_cosh(typval_T *argvars, typval_T *rettv);
+static void f_count(typval_T *argvars, typval_T *rettv);
+static void f_cscope_connection(typval_T *argvars, typval_T *rettv);
+static void f_cursor(typval_T *argsvars, typval_T *rettv);
+static void f_deepcopy(typval_T *argvars, typval_T *rettv);
+static void f_delete(typval_T *argvars, typval_T *rettv);
+static void f_did_filetype(typval_T *argvars, typval_T *rettv);
+static void f_diff_filler(typval_T *argvars, typval_T *rettv);
+static void f_diff_hlID(typval_T *argvars, typval_T *rettv);
+static void f_empty(typval_T *argvars, typval_T *rettv);
+static void f_escape(typval_T *argvars, typval_T *rettv);
+static void f_eval(typval_T *argvars, typval_T *rettv);
+static void f_eventhandler(typval_T *argvars, typval_T *rettv);
+static void f_executable(typval_T *argvars, typval_T *rettv);
+static void f_exists(typval_T *argvars, typval_T *rettv);
+static void f_exp(typval_T *argvars, typval_T *rettv);
+static void f_expand(typval_T *argvars, typval_T *rettv);
+static void f_extend(typval_T *argvars, typval_T *rettv);
+static void f_feedkeys(typval_T *argvars, typval_T *rettv);
+static void f_filereadable(typval_T *argvars, typval_T *rettv);
+static void f_filewritable(typval_T *argvars, typval_T *rettv);
+static void f_filter(typval_T *argvars, typval_T *rettv);
+static void f_finddir(typval_T *argvars, typval_T *rettv);
+static void f_findfile(typval_T *argvars, typval_T *rettv);
+static void f_float2nr(typval_T *argvars, typval_T *rettv);
+static void f_floor(typval_T *argvars, typval_T *rettv);
+static void f_fmod(typval_T *argvars, typval_T *rettv);
+static void f_fnameescape(typval_T *argvars, typval_T *rettv);
+static void f_fnamemodify(typval_T *argvars, typval_T *rettv);
+static void f_foldclosed(typval_T *argvars, typval_T *rettv);
+static void f_foldclosedend(typval_T *argvars, typval_T *rettv);
+static void f_foldlevel(typval_T *argvars, typval_T *rettv);
+static void f_foldtext(typval_T *argvars, typval_T *rettv);
+static void f_foldtextresult(typval_T *argvars, typval_T *rettv);
+static void f_foreground(typval_T *argvars, typval_T *rettv);
+static void f_function(typval_T *argvars, typval_T *rettv);
+static void f_garbagecollect(typval_T *argvars, typval_T *rettv);
+static void f_get(typval_T *argvars, typval_T *rettv);
+static void f_getbufline(typval_T *argvars, typval_T *rettv);
+static void f_getbufvar(typval_T *argvars, typval_T *rettv);
+static void f_getchar(typval_T *argvars, typval_T *rettv);
+static void f_getcharmod(typval_T *argvars, typval_T *rettv);
+static void f_getcmdline(typval_T *argvars, typval_T *rettv);
+static void f_getcmdpos(typval_T *argvars, typval_T *rettv);
+static void f_getcmdtype(typval_T *argvars, typval_T *rettv);
+static void f_getcwd(typval_T *argvars, typval_T *rettv);
+static void f_getfontname(typval_T *argvars, typval_T *rettv);
+static void f_getfperm(typval_T *argvars, typval_T *rettv);
+static void f_getfsize(typval_T *argvars, typval_T *rettv);
+static void f_getftime(typval_T *argvars, typval_T *rettv);
+static void f_getftype(typval_T *argvars, typval_T *rettv);
+static void f_getline(typval_T *argvars, typval_T *rettv);
+static void f_getmatches(typval_T *argvars, typval_T *rettv);
+static void f_getpid(typval_T *argvars, typval_T *rettv);
+static void f_getpos(typval_T *argvars, typval_T *rettv);
+static void f_getqflist(typval_T *argvars, typval_T *rettv);
+static void f_getreg(typval_T *argvars, typval_T *rettv);
+static void f_getregtype(typval_T *argvars, typval_T *rettv);
+static void f_gettabvar(typval_T *argvars, typval_T *rettv);
+static void f_gettabwinvar(typval_T *argvars, typval_T *rettv);
+static void f_getwinposx(typval_T *argvars, typval_T *rettv);
+static void f_getwinposy(typval_T *argvars, typval_T *rettv);
+static void f_getwinvar(typval_T *argvars, typval_T *rettv);
+static void f_glob(typval_T *argvars, typval_T *rettv);
+static void f_globpath(typval_T *argvars, typval_T *rettv);
+static void f_has(typval_T *argvars, typval_T *rettv);
+static void f_has_key(typval_T *argvars, typval_T *rettv);
+static void f_haslocaldir(typval_T *argvars, typval_T *rettv);
+static void f_hasmapto(typval_T *argvars, typval_T *rettv);
+static void f_histadd(typval_T *argvars, typval_T *rettv);
+static void f_histdel(typval_T *argvars, typval_T *rettv);
+static void f_histget(typval_T *argvars, typval_T *rettv);
+static void f_histnr(typval_T *argvars, typval_T *rettv);
+static void f_hlID(typval_T *argvars, typval_T *rettv);
+static void f_hlexists(typval_T *argvars, typval_T *rettv);
+static void f_hostname(typval_T *argvars, typval_T *rettv);
+static void f_iconv(typval_T *argvars, typval_T *rettv);
+static void f_indent(typval_T *argvars, typval_T *rettv);
+static void f_index(typval_T *argvars, typval_T *rettv);
+static void f_input(typval_T *argvars, typval_T *rettv);
+static void f_inputdialog(typval_T *argvars, typval_T *rettv);
+static void f_inputlist(typval_T *argvars, typval_T *rettv);
+static void f_inputrestore(typval_T *argvars, typval_T *rettv);
+static void f_inputsave(typval_T *argvars, typval_T *rettv);
+static void f_inputsecret(typval_T *argvars, typval_T *rettv);
+static void f_insert(typval_T *argvars, typval_T *rettv);
+static void f_invert(typval_T *argvars, typval_T *rettv);
+static void f_isdirectory(typval_T *argvars, typval_T *rettv);
+static void f_islocked(typval_T *argvars, typval_T *rettv);
+static void f_items(typval_T *argvars, typval_T *rettv);
+static void f_job_start(typval_T *argvars, typval_T *rettv);
+static void f_job_stop(typval_T *argvars, typval_T *rettv);
+static void f_job_write(typval_T *argvars, typval_T *rettv);
+static void f_join(typval_T *argvars, typval_T *rettv);
+static void f_keys(typval_T *argvars, typval_T *rettv);
+static void f_last_buffer_nr(typval_T *argvars, typval_T *rettv);
+static void f_len(typval_T *argvars, typval_T *rettv);
+static void f_libcall(typval_T *argvars, typval_T *rettv);
+static void f_libcallnr(typval_T *argvars, typval_T *rettv);
+static void f_line(typval_T *argvars, typval_T *rettv);
+static void f_line2byte(typval_T *argvars, typval_T *rettv);
+static void f_lispindent(typval_T *argvars, typval_T *rettv);
+static void f_localtime(typval_T *argvars, typval_T *rettv);
+static void f_log(typval_T *argvars, typval_T *rettv);
+static void f_log10(typval_T *argvars, typval_T *rettv);
+static void f_map(typval_T *argvars, typval_T *rettv);
+static void f_maparg(typval_T *argvars, typval_T *rettv);
+static void f_mapcheck(typval_T *argvars, typval_T *rettv);
+static void f_match(typval_T *argvars, typval_T *rettv);
+static void f_matchadd(typval_T *argvars, typval_T *rettv);
+static void f_matcharg(typval_T *argvars, typval_T *rettv);
+static void f_matchdelete(typval_T *argvars, typval_T *rettv);
+static void f_matchend(typval_T *argvars, typval_T *rettv);
+static void f_matchlist(typval_T *argvars, typval_T *rettv);
+static void f_matchstr(typval_T *argvars, typval_T *rettv);
+static void f_max(typval_T *argvars, typval_T *rettv);
+static void f_min(typval_T *argvars, typval_T *rettv);
+static void f_mkdir(typval_T *argvars, typval_T *rettv);
+static void f_mode(typval_T *argvars, typval_T *rettv);
+static void f_nextnonblank(typval_T *argvars, typval_T *rettv);
+static void f_nr2char(typval_T *argvars, typval_T *rettv);
+static void f_or(typval_T *argvars, typval_T *rettv);
+static void f_pathshorten(typval_T *argvars, typval_T *rettv);
+static void f_pow(typval_T *argvars, typval_T *rettv);
+static void f_prevnonblank(typval_T *argvars, typval_T *rettv);
+static void f_printf(typval_T *argvars, typval_T *rettv);
+static void f_pumvisible(typval_T *argvars, typval_T *rettv);
+static void f_range(typval_T *argvars, typval_T *rettv);
+static void f_readfile(typval_T *argvars, typval_T *rettv);
+static void f_reltime(typval_T *argvars, typval_T *rettv);
+static void f_reltimestr(typval_T *argvars, typval_T *rettv);
+static void f_remote_expr(typval_T *argvars, typval_T *rettv);
+static void f_remote_foreground(typval_T *argvars, typval_T *rettv);
+static void f_remote_peek(typval_T *argvars, typval_T *rettv);
+static void f_remote_read(typval_T *argvars, typval_T *rettv);
+static void f_remote_send(typval_T *argvars, typval_T *rettv);
+static void f_remove(typval_T *argvars, typval_T *rettv);
+static void f_rename(typval_T *argvars, typval_T *rettv);
+static void f_repeat(typval_T *argvars, typval_T *rettv);
+static void f_resolve(typval_T *argvars, typval_T *rettv);
+static void f_reverse(typval_T *argvars, typval_T *rettv);
+static void f_round(typval_T *argvars, typval_T *rettv);
+static void f_screenattr(typval_T *argvars, typval_T *rettv);
+static void f_screenchar(typval_T *argvars, typval_T *rettv);
+static void f_screencol(typval_T *argvars, typval_T *rettv);
+static void f_screenrow(typval_T *argvars, typval_T *rettv);
+static void f_search(typval_T *argvars, typval_T *rettv);
+static void f_searchdecl(typval_T *argvars, typval_T *rettv);
+static void f_searchpair(typval_T *argvars, typval_T *rettv);
+static void f_searchpairpos(typval_T *argvars, typval_T *rettv);
+static void f_searchpos(typval_T *argvars, typval_T *rettv);
+static void f_server2client(typval_T *argvars, typval_T *rettv);
+static void f_serverlist(typval_T *argvars, typval_T *rettv);
+static void f_setbufvar(typval_T *argvars, typval_T *rettv);
+static void f_setcmdpos(typval_T *argvars, typval_T *rettv);
+static void f_setline(typval_T *argvars, typval_T *rettv);
+static void f_setloclist(typval_T *argvars, typval_T *rettv);
+static void f_setmatches(typval_T *argvars, typval_T *rettv);
+static void f_setpos(typval_T *argvars, typval_T *rettv);
+static void f_setqflist(typval_T *argvars, typval_T *rettv);
+static void f_setreg(typval_T *argvars, typval_T *rettv);
+static void f_settabvar(typval_T *argvars, typval_T *rettv);
+static void f_settabwinvar(typval_T *argvars, typval_T *rettv);
+static void f_setwinvar(typval_T *argvars, typval_T *rettv);
+static void f_sha256(typval_T *argvars, typval_T *rettv);
+static void f_shellescape(typval_T *argvars, typval_T *rettv);
+static void f_shiftwidth(typval_T *argvars, typval_T *rettv);
+static void f_simplify(typval_T *argvars, typval_T *rettv);
+static void f_sin(typval_T *argvars, typval_T *rettv);
+static void f_sinh(typval_T *argvars, typval_T *rettv);
+static void f_sort(typval_T *argvars, typval_T *rettv);
+static void f_soundfold(typval_T *argvars, typval_T *rettv);
+static void f_spellbadword(typval_T *argvars, typval_T *rettv);
+static void f_spellsuggest(typval_T *argvars, typval_T *rettv);
+static void f_split(typval_T *argvars, typval_T *rettv);
+static void f_sqrt(typval_T *argvars, typval_T *rettv);
+static void f_str2float(typval_T *argvars, typval_T *rettv);
+static void f_str2nr(typval_T *argvars, typval_T *rettv);
+static void f_strchars(typval_T *argvars, typval_T *rettv);
+static void f_strftime(typval_T *argvars, typval_T *rettv);
+static void f_stridx(typval_T *argvars, typval_T *rettv);
+static void f_string(typval_T *argvars, typval_T *rettv);
+static void f_strlen(typval_T *argvars, typval_T *rettv);
+static void f_strpart(typval_T *argvars, typval_T *rettv);
+static void f_strridx(typval_T *argvars, typval_T *rettv);
+static void f_strtrans(typval_T *argvars, typval_T *rettv);
+static void f_strdisplaywidth(typval_T *argvars, typval_T *rettv);
+static void f_strwidth(typval_T *argvars, typval_T *rettv);
+static void f_submatch(typval_T *argvars, typval_T *rettv);
+static void f_substitute(typval_T *argvars, typval_T *rettv);
+static void f_synID(typval_T *argvars, typval_T *rettv);
+static void f_synIDattr(typval_T *argvars, typval_T *rettv);
+static void f_synIDtrans(typval_T *argvars, typval_T *rettv);
+static void f_synstack(typval_T *argvars, typval_T *rettv);
+static void f_synconcealed(typval_T *argvars, typval_T *rettv);
+static void f_system(typval_T *argvars, typval_T *rettv);
+static void f_tabpagebuflist(typval_T *argvars, typval_T *rettv);
+static void f_tabpagenr(typval_T *argvars, typval_T *rettv);
+static void f_tabpagewinnr(typval_T *argvars, typval_T *rettv);
+static void f_taglist(typval_T *argvars, typval_T *rettv);
+static void f_tagfiles(typval_T *argvars, typval_T *rettv);
+static void f_tempname(typval_T *argvars, typval_T *rettv);
+static void f_test(typval_T *argvars, typval_T *rettv);
+static void f_tan(typval_T *argvars, typval_T *rettv);
+static void f_tanh(typval_T *argvars, typval_T *rettv);
+static void f_tolower(typval_T *argvars, typval_T *rettv);
+static void f_toupper(typval_T *argvars, typval_T *rettv);
+static void f_tr(typval_T *argvars, typval_T *rettv);
+static void f_trunc(typval_T *argvars, typval_T *rettv);
+static void f_type(typval_T *argvars, typval_T *rettv);
+static void f_undofile(typval_T *argvars, typval_T *rettv);
+static void f_undotree(typval_T *argvars, typval_T *rettv);
+static void f_uniq(typval_T *argvars, typval_T *rettv);
+static void f_values(typval_T *argvars, typval_T *rettv);
+static void f_virtcol(typval_T *argvars, typval_T *rettv);
+static void f_visualmode(typval_T *argvars, typval_T *rettv);
+static void f_wildmenumode(typval_T *argvars, typval_T *rettv);
+static void f_winbufnr(typval_T *argvars, typval_T *rettv);
+static void f_wincol(typval_T *argvars, typval_T *rettv);
+static void f_winheight(typval_T *argvars, typval_T *rettv);
+static void f_winline(typval_T *argvars, typval_T *rettv);
+static void f_winnr(typval_T *argvars, typval_T *rettv);
+static void f_winrestcmd(typval_T *argvars, typval_T *rettv);
+static void f_winrestview(typval_T *argvars, typval_T *rettv);
+static void f_winsaveview(typval_T *argvars, typval_T *rettv);
+static void f_winwidth(typval_T *argvars, typval_T *rettv);
+static void f_writefile(typval_T *argvars, typval_T *rettv);
+static void f_xor(typval_T *argvars, typval_T *rettv);
+
+static int list2fpos(typval_T *arg, pos_T *posp, int *fnump);
+static pos_T *var2fpos(typval_T *varp, int dollar_lnum, int *fnum);
+static int get_env_len(char_u **arg);
+static int get_id_len(char_u **arg);
+static int get_name_len(char_u **arg, char_u **alias, int evaluate,
+ int verbose);
+static char_u *find_name_end(char_u *arg, char_u **expr_start, char_u *
+ *expr_end,
+ int flags);
+#define FNE_INCL_BR 1 /* find_name_end(): include [] in name */
+#define FNE_CHECK_START 2 /* find_name_end(): check name starts with
+ valid character */
+static char_u *
+make_expanded_name(char_u *in_start, char_u *expr_start, char_u *
+ expr_end,
+ char_u *in_end);
+static int eval_isnamec(int c);
+static int eval_isnamec1(int c);
+static int get_var_tv(char_u *name, int len, typval_T *rettv,
+ int verbose,
+ int no_autoload);
+static int handle_subscript(char_u **arg, typval_T *rettv, int evaluate,
+ int verbose);
+static void init_tv(typval_T *varp);
+static long get_tv_number(typval_T *varp);
+static linenr_T get_tv_lnum(typval_T *argvars);
+static linenr_T get_tv_lnum_buf(typval_T *argvars, buf_T *buf);
+static char_u *get_tv_string(typval_T *varp);
+static char_u *get_tv_string_buf(typval_T *varp, char_u *buf);
+static char_u *get_tv_string_buf_chk(typval_T *varp, char_u *buf);
+static dictitem_T *find_var(char_u *name, hashtab_T **htp,
+ int no_autoload);
+static dictitem_T *find_var_in_ht(hashtab_T *ht, int htname,
+ char_u *varname,
+ int no_autoload);
+static hashtab_T *find_var_ht(char_u *name, char_u **varname);
+static void vars_clear_ext(hashtab_T *ht, int free_val);
+static void delete_var(hashtab_T *ht, hashitem_T *hi);
+static void list_one_var(dictitem_T *v, char_u *prefix, int *first);
+static void list_one_var_a(char_u *prefix, char_u *name, int type,
+ char_u *string,
+ int *first);
+static void set_var(char_u *name, typval_T *varp, int copy);
+static int var_check_ro(int flags, char_u *name);
+static int var_check_fixed(int flags, char_u *name);
+static int var_check_func_name(char_u *name, int new_var);
+static int valid_varname(char_u *varname);
+static int tv_check_lock(int lock, char_u *name);
+static int item_copy(typval_T *from, typval_T *to, int deep, int copyID);
+static char_u *find_option_end(char_u **arg, int *opt_flags);
+static char_u *trans_function_name(char_u **pp, int skip, int flags,
+ funcdict_T *fd);
+static int eval_fname_script(char_u *p);
+static int eval_fname_sid(char_u *p);
+static void list_func_head(ufunc_T *fp, int indent);
+static ufunc_T *find_func(char_u *name);
+static int function_exists(char_u *name);
+static bool builtin_function(char_u *name, int len);
+static void func_do_profile(ufunc_T *fp);
+static void prof_sort_list(FILE *fd, ufunc_T **sorttab, int st_len,
+ char *title,
+ int prefer_self);
+static void prof_func_line(FILE *fd, int count, proftime_T *total,
+ proftime_T *self,
+ int prefer_self);
+static int
+prof_total_cmp(const void *s1, const void *s2);
+static int
+prof_self_cmp(const void *s1, const void *s2);
+static int script_autoload(char_u *name, int reload);
+static char_u *autoload_name(char_u *name);
+static void cat_func_name(char_u *buf, ufunc_T *fp);
+static void func_free(ufunc_T *fp);
+static void call_user_func(ufunc_T *fp, int argcount, typval_T *argvars,
+ typval_T *rettv, linenr_T firstline,
+ linenr_T lastline,
+ dict_T *selfdict);
+static int can_free_funccal(funccall_T *fc, int copyID);
+static void free_funccal(funccall_T *fc, int free_val);
+static void add_nr_var(dict_T *dp, dictitem_T *v, char *name,
+ varnumber_T nr);
+static win_T *find_win_by_nr(typval_T *vp, tabpage_T *tp);
+static void getwinvar(typval_T *argvars, typval_T *rettv, int off);
+static int searchpair_cmn(typval_T *argvars, pos_T *match_pos);
+static int search_cmn(typval_T *argvars, pos_T *match_pos, int *flagsp);
+static void setwinvar(typval_T *argvars, typval_T *rettv, int off);
+
+
+
+/*
+ * Initialize the global and v: variables.
+ */
+void eval_init(void)
+{
+ int i;
+ struct vimvar *p;
+
+ init_var_dict(&globvardict, &globvars_var, VAR_DEF_SCOPE);
+ init_var_dict(&vimvardict, &vimvars_var, VAR_SCOPE);
+ vimvardict.dv_lock = VAR_FIXED;
+ hash_init(&compat_hashtab);
+ hash_init(&func_hashtab);
+
+ for (i = 0; i < VV_LEN; ++i) {
+ p = &vimvars[i];
+ STRCPY(p->vv_di.di_key, p->vv_name);
+ if (p->vv_flags & VV_RO)
+ p->vv_di.di_flags = DI_FLAGS_RO | DI_FLAGS_FIX;
+ else if (p->vv_flags & VV_RO_SBX)
+ p->vv_di.di_flags = DI_FLAGS_RO_SBX | DI_FLAGS_FIX;
+ else
+ p->vv_di.di_flags = DI_FLAGS_FIX;
+
+ /* add to v: scope dict, unless the value is not always available */
+ if (p->vv_type != VAR_UNKNOWN)
+ hash_add(&vimvarht, p->vv_di.di_key);
+ if (p->vv_flags & VV_COMPAT)
+ /* add to compat scope dict */
+ hash_add(&compat_hashtab, p->vv_di.di_key);
+ }
+ set_vim_var_nr(VV_SEARCHFORWARD, 1L);
+ set_vim_var_nr(VV_HLSEARCH, 1L);
+ set_reg_var(0); /* default for v:register is not 0 but '"' */
+
+}
+
+#if defined(EXITFREE) || defined(PROTO)
+void eval_clear(void)
+{
+ int i;
+ struct vimvar *p;
+
+ for (i = 0; i < VV_LEN; ++i) {
+ p = &vimvars[i];
+ if (p->vv_di.di_tv.v_type == VAR_STRING) {
+ free(p->vv_str);
+ p->vv_str = NULL;
+ } else if (p->vv_di.di_tv.v_type == VAR_LIST) {
+ list_unref(p->vv_list);
+ p->vv_list = NULL;
+ }
+ }
+ hash_clear(&vimvarht);
+ hash_init(&vimvarht); /* garbage_collect() will access it */
+ hash_clear(&compat_hashtab);
+
+ free_scriptnames();
+ free_locales();
+
+ /* global variables */
+ vars_clear(&globvarht);
+
+ /* autoloaded script names */
+ ga_clear_strings(&ga_loaded);
+
+ /* Script-local variables. First clear all the variables and in a second
+ * loop free the scriptvar_T, because a variable in one script might hold
+ * a reference to the whole scope of another script. */
+ for (i = 1; i <= ga_scripts.ga_len; ++i)
+ vars_clear(&SCRIPT_VARS(i));
+ for (i = 1; i <= ga_scripts.ga_len; ++i)
+ free(SCRIPT_SV(i));
+ ga_clear(&ga_scripts);
+
+ /* unreferenced lists and dicts */
+ (void)garbage_collect();
+
+ /* functions */
+ free_all_functions();
+ hash_clear(&func_hashtab);
+}
+
+#endif
+
+/*
+ * Return the name of the executed function.
+ */
+char_u *func_name(void *cookie)
+{
+ return ((funccall_T *)cookie)->func->uf_name;
+}
+
+/*
+ * Return the address holding the next breakpoint line for a funccall cookie.
+ */
+linenr_T *func_breakpoint(void *cookie)
+{
+ return &((funccall_T *)cookie)->breakpoint;
+}
+
+/*
+ * Return the address holding the debug tick for a funccall cookie.
+ */
+int *func_dbg_tick(void *cookie)
+{
+ return &((funccall_T *)cookie)->dbg_tick;
+}
+
+/*
+ * Return the nesting level for a funccall cookie.
+ */
+int func_level(void *cookie)
+{
+ return ((funccall_T *)cookie)->level;
+}
+
+/* pointer to funccal for currently active function */
+funccall_T *current_funccal = NULL;
+
+/* pointer to list of previously used funccal, still around because some
+ * item in it is still being used. */
+funccall_T *previous_funccal = NULL;
+
+/*
+ * Return TRUE when a function was ended by a ":return" command.
+ */
+int current_func_returned(void)
+{
+ return current_funccal->returned;
+}
+
+/*
+ * Set an internal variable to a string value. Creates the variable if it does
+ * not already exist.
+ */
+void set_internal_string_var(char_u *name, char_u *value)
+{
+ char_u *val = vim_strsave(value);
+ typval_T *tvp = xcalloc(1, sizeof(typval_T));
+
+ tvp->v_type = VAR_STRING;
+ tvp->vval.v_string = val;
+ set_var(name, tvp, FALSE);
+ free_tv(tvp);
+}
+
+static lval_T *redir_lval = NULL;
+static garray_T redir_ga; /* only valid when redir_lval is not NULL */
+static char_u *redir_endp = NULL;
+static char_u *redir_varname = NULL;
+
+/*
+ * Start recording command output to a variable
+ * Returns OK if successfully completed the setup. FAIL otherwise.
+ */
+int
+var_redir_start (
+ char_u *name,
+ int append /* append to an existing variable */
+)
+{
+ int save_emsg;
+ int err;
+ typval_T tv;
+
+ /* Catch a bad name early. */
+ if (!eval_isnamec1(*name)) {
+ EMSG(_(e_invarg));
+ return FAIL;
+ }
+
+ /* Make a copy of the name, it is used in redir_lval until redir ends. */
+ redir_varname = vim_strsave(name);
+ if (redir_varname == NULL)
+ return FAIL;
+
+ redir_lval = xcalloc(1, sizeof(lval_T));
+
+ /* The output is stored in growarray "redir_ga" until redirection ends. */
+ ga_init(&redir_ga, (int)sizeof(char), 500);
+
+ /* Parse the variable name (can be a dict or list entry). */
+ redir_endp = get_lval(redir_varname, NULL, redir_lval, FALSE, FALSE, 0,
+ FNE_CHECK_START);
+ if (redir_endp == NULL || redir_lval->ll_name == NULL || *redir_endp !=
+ NUL) {
+ clear_lval(redir_lval);
+ if (redir_endp != NULL && *redir_endp != NUL)
+ /* Trailing characters are present after the variable name */
+ EMSG(_(e_trailing));
+ else
+ EMSG(_(e_invarg));
+ redir_endp = NULL; /* don't store a value, only cleanup */
+ var_redir_stop();
+ return FAIL;
+ }
+
+ /* check if we can write to the variable: set it to or append an empty
+ * string */
+ save_emsg = did_emsg;
+ did_emsg = FALSE;
+ tv.v_type = VAR_STRING;
+ tv.vval.v_string = (char_u *)"";
+ if (append)
+ set_var_lval(redir_lval, redir_endp, &tv, TRUE, (char_u *)".");
+ else
+ set_var_lval(redir_lval, redir_endp, &tv, TRUE, (char_u *)"=");
+ clear_lval(redir_lval);
+ err = did_emsg;
+ did_emsg |= save_emsg;
+ if (err) {
+ redir_endp = NULL; /* don't store a value, only cleanup */
+ var_redir_stop();
+ return FAIL;
+ }
+
+ return OK;
+}
+
+/*
+ * Append "value[value_len]" to the variable set by var_redir_start().
+ * The actual appending is postponed until redirection ends, because the value
+ * appended may in fact be the string we write to, changing it may cause freed
+ * memory to be used:
+ * :redir => foo
+ * :let foo
+ * :redir END
+ */
+void var_redir_str(char_u *value, int value_len)
+{
+ int len;
+
+ if (redir_lval == NULL)
+ return;
+
+ if (value_len == -1)
+ len = (int)STRLEN(value); /* Append the entire string */
+ else
+ len = value_len; /* Append only "value_len" characters */
+
+ ga_grow(&redir_ga, len);
+ memmove((char *)redir_ga.ga_data + redir_ga.ga_len, value, len);
+ redir_ga.ga_len += len;
+}
+
+/*
+ * Stop redirecting command output to a variable.
+ * Frees the allocated memory.
+ */
+void var_redir_stop(void)
+{
+ typval_T tv;
+
+ if (redir_lval != NULL) {
+ /* If there was no error: assign the text to the variable. */
+ if (redir_endp != NULL) {
+ ga_append(&redir_ga, NUL); /* Append the trailing NUL. */
+ tv.v_type = VAR_STRING;
+ tv.vval.v_string = redir_ga.ga_data;
+ /* Call get_lval() again, if it's inside a Dict or List it may
+ * have changed. */
+ redir_endp = get_lval(redir_varname, NULL, redir_lval,
+ FALSE, FALSE, 0, FNE_CHECK_START);
+ if (redir_endp != NULL && redir_lval->ll_name != NULL)
+ set_var_lval(redir_lval, redir_endp, &tv, FALSE, (char_u *)".");
+ clear_lval(redir_lval);
+ }
+
+ /* free the collected output */
+ free(redir_ga.ga_data);
+ redir_ga.ga_data = NULL;
+
+ free(redir_lval);
+ redir_lval = NULL;
+ }
+ free(redir_varname);
+ redir_varname = NULL;
+}
+
+int eval_charconvert(char_u *enc_from, char_u *enc_to, char_u *fname_from, char_u *fname_to)
+{
+ int err = FALSE;
+
+ set_vim_var_string(VV_CC_FROM, enc_from, -1);
+ set_vim_var_string(VV_CC_TO, enc_to, -1);
+ set_vim_var_string(VV_FNAME_IN, fname_from, -1);
+ set_vim_var_string(VV_FNAME_OUT, fname_to, -1);
+ if (eval_to_bool(p_ccv, &err, NULL, FALSE))
+ err = TRUE;
+ set_vim_var_string(VV_CC_FROM, NULL, -1);
+ set_vim_var_string(VV_CC_TO, NULL, -1);
+ set_vim_var_string(VV_FNAME_IN, NULL, -1);
+ set_vim_var_string(VV_FNAME_OUT, NULL, -1);
+
+ if (err)
+ return FAIL;
+ return OK;
+}
+
+int eval_printexpr(char_u *fname, char_u *args)
+{
+ int err = FALSE;
+
+ set_vim_var_string(VV_FNAME_IN, fname, -1);
+ set_vim_var_string(VV_CMDARG, args, -1);
+ if (eval_to_bool(p_pexpr, &err, NULL, FALSE))
+ err = TRUE;
+ set_vim_var_string(VV_FNAME_IN, NULL, -1);
+ set_vim_var_string(VV_CMDARG, NULL, -1);
+
+ if (err) {
+ os_remove((char *)fname);
+ return FAIL;
+ }
+ return OK;
+}
+
+void eval_diff(char_u *origfile, char_u *newfile, char_u *outfile)
+{
+ int err = FALSE;
+
+ set_vim_var_string(VV_FNAME_IN, origfile, -1);
+ set_vim_var_string(VV_FNAME_NEW, newfile, -1);
+ set_vim_var_string(VV_FNAME_OUT, outfile, -1);
+ (void)eval_to_bool(p_dex, &err, NULL, FALSE);
+ set_vim_var_string(VV_FNAME_IN, NULL, -1);
+ set_vim_var_string(VV_FNAME_NEW, NULL, -1);
+ set_vim_var_string(VV_FNAME_OUT, NULL, -1);
+}
+
+void eval_patch(char_u *origfile, char_u *difffile, char_u *outfile)
+{
+ int err;
+
+ set_vim_var_string(VV_FNAME_IN, origfile, -1);
+ set_vim_var_string(VV_FNAME_DIFF, difffile, -1);
+ set_vim_var_string(VV_FNAME_OUT, outfile, -1);
+ (void)eval_to_bool(p_pex, &err, NULL, FALSE);
+ set_vim_var_string(VV_FNAME_IN, NULL, -1);
+ set_vim_var_string(VV_FNAME_DIFF, NULL, -1);
+ set_vim_var_string(VV_FNAME_OUT, NULL, -1);
+}
+
+/*
+ * Top level evaluation function, returning a boolean.
+ * Sets "error" to TRUE if there was an error.
+ * Return TRUE or FALSE.
+ */
+int
+eval_to_bool (
+ char_u *arg,
+ int *error,
+ char_u **nextcmd,
+ int skip /* only parse, don't execute */
+)
+{
+ typval_T tv;
+ int retval = FALSE;
+
+ if (skip)
+ ++emsg_skip;
+ if (eval0(arg, &tv, nextcmd, !skip) == FAIL)
+ *error = TRUE;
+ else {
+ *error = FALSE;
+ if (!skip) {
+ retval = (get_tv_number_chk(&tv, error) != 0);
+ clear_tv(&tv);
+ }
+ }
+ if (skip)
+ --emsg_skip;
+
+ return retval;
+}
+
+/*
+ * Top level evaluation function, returning a string. If "skip" is TRUE,
+ * only parsing to "nextcmd" is done, without reporting errors. Return
+ * pointer to allocated memory, or NULL for failure or when "skip" is TRUE.
+ */
+char_u *
+eval_to_string_skip (
+ char_u *arg,
+ char_u **nextcmd,
+ int skip /* only parse, don't execute */
+)
+{
+ typval_T tv;
+ char_u *retval;
+
+ if (skip)
+ ++emsg_skip;
+ if (eval0(arg, &tv, nextcmd, !skip) == FAIL || skip)
+ retval = NULL;
+ else {
+ retval = vim_strsave(get_tv_string(&tv));
+ clear_tv(&tv);
+ }
+ if (skip)
+ --emsg_skip;
+
+ return retval;
+}
+
+/*
+ * Skip over an expression at "*pp".
+ * Return FAIL for an error, OK otherwise.
+ */
+int skip_expr(char_u **pp)
+{
+ typval_T rettv;
+
+ *pp = skipwhite(*pp);
+ return eval1(pp, &rettv, FALSE);
+}
+
+/*
+ * Top level evaluation function, returning a string.
+ * When "convert" is TRUE convert a List into a sequence of lines and convert
+ * a Float to a String.
+ * Return pointer to allocated memory, or NULL for failure.
+ */
+char_u *eval_to_string(char_u *arg, char_u **nextcmd, int convert)
+{
+ typval_T tv;
+ char_u *retval;
+ garray_T ga;
+ char_u numbuf[NUMBUFLEN];
+
+ if (eval0(arg, &tv, nextcmd, TRUE) == FAIL)
+ retval = NULL;
+ else {
+ if (convert && tv.v_type == VAR_LIST) {
+ ga_init(&ga, (int)sizeof(char), 80);
+ if (tv.vval.v_list != NULL) {
+ list_join(&ga, tv.vval.v_list, (char_u *)"\n", TRUE, 0);
+ if (tv.vval.v_list->lv_len > 0)
+ ga_append(&ga, NL);
+ }
+ ga_append(&ga, NUL);
+ retval = (char_u *)ga.ga_data;
+ } else if (convert && tv.v_type == VAR_FLOAT) {
+ vim_snprintf((char *)numbuf, NUMBUFLEN, "%g", tv.vval.v_float);
+ retval = vim_strsave(numbuf);
+ } else
+ retval = vim_strsave(get_tv_string(&tv));
+ clear_tv(&tv);
+ }
+
+ return retval;
+}
+
+/*
+ * Call eval_to_string() without using current local variables and using
+ * textlock. When "use_sandbox" is TRUE use the sandbox.
+ */
+char_u *eval_to_string_safe(char_u *arg, char_u **nextcmd, int use_sandbox)
+{
+ char_u *retval;
+ void *save_funccalp;
+
+ save_funccalp = save_funccal();
+ if (use_sandbox)
+ ++sandbox;
+ ++textlock;
+ retval = eval_to_string(arg, nextcmd, FALSE);
+ if (use_sandbox)
+ --sandbox;
+ --textlock;
+ restore_funccal(save_funccalp);
+ return retval;
+}
+
+/*
+ * Top level evaluation function, returning a number.
+ * Evaluates "expr" silently.
+ * Returns -1 for an error.
+ */
+int eval_to_number(char_u *expr)
+{
+ typval_T rettv;
+ int retval;
+ char_u *p = skipwhite(expr);
+
+ ++emsg_off;
+
+ if (eval1(&p, &rettv, TRUE) == FAIL)
+ retval = -1;
+ else {
+ retval = get_tv_number_chk(&rettv, NULL);
+ clear_tv(&rettv);
+ }
+ --emsg_off;
+
+ return retval;
+}
+
+
+/*
+ * Prepare v: variable "idx" to be used.
+ * Save the current typeval in "save_tv".
+ * When not used yet add the variable to the v: hashtable.
+ */
+static void prepare_vimvar(int idx, typval_T *save_tv)
+{
+ *save_tv = vimvars[idx].vv_tv;
+ if (vimvars[idx].vv_type == VAR_UNKNOWN)
+ hash_add(&vimvarht, vimvars[idx].vv_di.di_key);
+}
+
+/*
+ * Restore v: variable "idx" to typeval "save_tv".
+ * When no longer defined, remove the variable from the v: hashtable.
+ */
+static void restore_vimvar(int idx, typval_T *save_tv)
+{
+ hashitem_T *hi;
+
+ vimvars[idx].vv_tv = *save_tv;
+ if (vimvars[idx].vv_type == VAR_UNKNOWN) {
+ hi = hash_find(&vimvarht, vimvars[idx].vv_di.di_key);
+ if (HASHITEM_EMPTY(hi))
+ EMSG2(_(e_intern2), "restore_vimvar()");
+ else
+ hash_remove(&vimvarht, hi);
+ }
+}
+
+/*
+ * Evaluate an expression to a list with suggestions.
+ * For the "expr:" part of 'spellsuggest'.
+ * Returns NULL when there is an error.
+ */
+list_T *eval_spell_expr(char_u *badword, char_u *expr)
+{
+ typval_T save_val;
+ typval_T rettv;
+ list_T *list = NULL;
+ char_u *p = skipwhite(expr);
+
+ /* Set "v:val" to the bad word. */
+ prepare_vimvar(VV_VAL, &save_val);
+ vimvars[VV_VAL].vv_type = VAR_STRING;
+ vimvars[VV_VAL].vv_str = badword;
+ if (p_verbose == 0)
+ ++emsg_off;
+
+ if (eval1(&p, &rettv, TRUE) == OK) {
+ if (rettv.v_type != VAR_LIST)
+ clear_tv(&rettv);
+ else
+ list = rettv.vval.v_list;
+ }
+
+ if (p_verbose == 0)
+ --emsg_off;
+ restore_vimvar(VV_VAL, &save_val);
+
+ return list;
+}
+
+/*
+ * "list" is supposed to contain two items: a word and a number. Return the
+ * word in "pp" and the number as the return value.
+ * Return -1 if anything isn't right.
+ * Used to get the good word and score from the eval_spell_expr() result.
+ */
+int get_spellword(list_T *list, char_u **pp)
+{
+ listitem_T *li;
+
+ li = list->lv_first;
+ if (li == NULL)
+ return -1;
+ *pp = get_tv_string(&li->li_tv);
+
+ li = li->li_next;
+ if (li == NULL)
+ return -1;
+ return get_tv_number(&li->li_tv);
+}
+
+/*
+ * Top level evaluation function.
+ * Returns an allocated typval_T with the result.
+ * Returns NULL when there is an error.
+ */
+typval_T *eval_expr(char_u *arg, char_u **nextcmd)
+{
+ typval_T *tv;
+
+ tv = (typval_T *)alloc(sizeof(typval_T));
+ if (tv != NULL && eval0(arg, tv, nextcmd, TRUE) == FAIL) {
+ free(tv);
+ tv = NULL;
+ }
+
+ return tv;
+}
+
+
+/*
+ * Call some vimL function and return the result in "*rettv".
+ * Uses argv[argc] for the function arguments. Only Number and String
+ * arguments are currently supported.
+ * Returns OK or FAIL.
+ */
+int
+call_vim_function (
+ char_u *func,
+ int argc,
+ char_u **argv,
+ int safe, /* use the sandbox */
+ int str_arg_only, /* all arguments are strings */
+ typval_T *rettv
+)
+{
+ typval_T *argvars;
+ long n;
+ int len;
+ int i;
+ int doesrange;
+ void *save_funccalp = NULL;
+ int ret;
+
+ argvars = (typval_T *)alloc((unsigned)((argc + 1) * sizeof(typval_T)));
+ if (argvars == NULL)
+ return FAIL;
+
+ for (i = 0; i < argc; i++) {
+ /* Pass a NULL or empty argument as an empty string */
+ if (argv[i] == NULL || *argv[i] == NUL) {
+ argvars[i].v_type = VAR_STRING;
+ argvars[i].vval.v_string = (char_u *)"";
+ continue;
+ }
+
+ if (str_arg_only)
+ len = 0;
+ else
+ /* Recognize a number argument, the others must be strings. */
+ vim_str2nr(argv[i], NULL, &len, TRUE, TRUE, &n, NULL);
+ if (len != 0 && len == (int)STRLEN(argv[i])) {
+ argvars[i].v_type = VAR_NUMBER;
+ argvars[i].vval.v_number = n;
+ } else {
+ argvars[i].v_type = VAR_STRING;
+ argvars[i].vval.v_string = argv[i];
+ }
+ }
+
+ if (safe) {
+ save_funccalp = save_funccal();
+ ++sandbox;
+ }
+
+ rettv->v_type = VAR_UNKNOWN; /* clear_tv() uses this */
+ ret = call_func(func, (int)STRLEN(func), rettv, argc, argvars,
+ curwin->w_cursor.lnum, curwin->w_cursor.lnum,
+ &doesrange, TRUE, NULL);
+ if (safe) {
+ --sandbox;
+ restore_funccal(save_funccalp);
+ }
+ free(argvars);
+
+ if (ret == FAIL)
+ clear_tv(rettv);
+
+ return ret;
+}
+
+/*
+ * Call vimL function "func" and return the result as a number.
+ * Returns -1 when calling the function fails.
+ * Uses argv[argc] for the function arguments.
+ */
+long
+call_func_retnr (
+ char_u *func,
+ int argc,
+ char_u **argv,
+ int safe /* use the sandbox */
+)
+{
+ typval_T rettv;
+ long retval;
+
+ /* All arguments are passed as strings, no conversion to number. */
+ if (call_vim_function(func, argc, argv, safe, TRUE, &rettv) == FAIL)
+ return -1;
+
+ retval = get_tv_number_chk(&rettv, NULL);
+ clear_tv(&rettv);
+ return retval;
+}
+
+#if (defined(FEAT_USR_CMDS) && defined(FEAT_CMDL_COMPL)) \
+ || defined(FEAT_COMPL_FUNC) || defined(PROTO)
+
+/*
+ * Call vimL function "func" and return the result as a string.
+ * Returns NULL when calling the function fails.
+ * Uses argv[argc] for the function arguments.
+ */
+void *
+call_func_retstr (
+ char_u *func,
+ int argc,
+ char_u **argv,
+ int safe /* use the sandbox */
+)
+{
+ typval_T rettv;
+ char_u *retval;
+
+ /* All arguments are passed as strings, no conversion to number. */
+ if (call_vim_function(func, argc, argv, safe, TRUE, &rettv) == FAIL)
+ return NULL;
+
+ retval = vim_strsave(get_tv_string(&rettv));
+ clear_tv(&rettv);
+ return retval;
+}
+
+/*
+ * Call vimL function "func" and return the result as a List.
+ * Uses argv[argc] for the function arguments.
+ * Returns NULL when there is something wrong.
+ */
+void *
+call_func_retlist (
+ char_u *func,
+ int argc,
+ char_u **argv,
+ int safe /* use the sandbox */
+)
+{
+ typval_T rettv;
+
+ /* All arguments are passed as strings, no conversion to number. */
+ if (call_vim_function(func, argc, argv, safe, TRUE, &rettv) == FAIL)
+ return NULL;
+
+ if (rettv.v_type != VAR_LIST) {
+ clear_tv(&rettv);
+ return NULL;
+ }
+
+ return rettv.vval.v_list;
+}
+#endif
+
+/*
+ * Save the current function call pointer, and set it to NULL.
+ * Used when executing autocommands and for ":source".
+ */
+void *save_funccal(void)
+{
+ funccall_T *fc = current_funccal;
+
+ current_funccal = NULL;
+ return (void *)fc;
+}
+
+void restore_funccal(void *vfc)
+{
+ funccall_T *fc = (funccall_T *)vfc;
+
+ current_funccal = fc;
+}
+
+/*
+ * Prepare profiling for entering a child or something else that is not
+ * counted for the script/function itself.
+ * Should always be called in pair with prof_child_exit().
+ */
+void prof_child_enter(tm)
+proftime_T *tm; /* place to store waittime */
+{
+ funccall_T *fc = current_funccal;
+
+ if (fc != NULL && fc->func->uf_profiling)
+ profile_start(&fc->prof_child);
+ script_prof_save(tm);
+}
+
+/*
+ * Take care of time spent in a child.
+ * Should always be called after prof_child_enter().
+ */
+void prof_child_exit(tm)
+proftime_T *tm; /* where waittime was stored */
+{
+ funccall_T *fc = current_funccal;
+
+ if (fc != NULL && fc->func->uf_profiling) {
+ profile_end(&fc->prof_child);
+ profile_sub_wait(tm, &fc->prof_child); /* don't count waiting time */
+ profile_add(&fc->func->uf_tm_children, &fc->prof_child);
+ profile_add(&fc->func->uf_tml_children, &fc->prof_child);
+ }
+ script_prof_restore(tm);
+}
+
+
+/*
+ * Evaluate 'foldexpr'. Returns the foldlevel, and any character preceding
+ * it in "*cp". Doesn't give error messages.
+ */
+int eval_foldexpr(char_u *arg, int *cp)
+{
+ typval_T tv;
+ int retval;
+ char_u *s;
+ int use_sandbox = was_set_insecurely((char_u *)"foldexpr",
+ OPT_LOCAL);
+
+ ++emsg_off;
+ if (use_sandbox)
+ ++sandbox;
+ ++textlock;
+ *cp = NUL;
+ if (eval0(arg, &tv, NULL, TRUE) == FAIL)
+ retval = 0;
+ else {
+ /* If the result is a number, just return the number. */
+ if (tv.v_type == VAR_NUMBER)
+ retval = tv.vval.v_number;
+ else if (tv.v_type != VAR_STRING || tv.vval.v_string == NULL)
+ retval = 0;
+ else {
+ /* If the result is a string, check if there is a non-digit before
+ * the number. */
+ s = tv.vval.v_string;
+ if (!VIM_ISDIGIT(*s) && *s != '-')
+ *cp = *s++;
+ retval = atol((char *)s);
+ }
+ clear_tv(&tv);
+ }
+ --emsg_off;
+ if (use_sandbox)
+ --sandbox;
+ --textlock;
+
+ return retval;
+}
+
+/*
+ * ":let" list all variable values
+ * ":let var1 var2" list variable values
+ * ":let var = expr" assignment command.
+ * ":let var += expr" assignment command.
+ * ":let var -= expr" assignment command.
+ * ":let var .= expr" assignment command.
+ * ":let [var1, var2] = expr" unpack list.
+ */
+void ex_let(exarg_T *eap)
+{
+ char_u *arg = eap->arg;
+ char_u *expr = NULL;
+ typval_T rettv;
+ int i;
+ int var_count = 0;
+ int semicolon = 0;
+ char_u op[2];
+ char_u *argend;
+ int first = TRUE;
+
+ argend = skip_var_list(arg, &var_count, &semicolon);
+ if (argend == NULL)
+ return;
+ if (argend > arg && argend[-1] == '.') /* for var.='str' */
+ --argend;
+ expr = skipwhite(argend);
+ if (*expr != '=' && !(vim_strchr((char_u *)"+-.", *expr) != NULL
+ && expr[1] == '=')) {
+ // ":let" without "=": list variables
+ if (*arg == '[')
+ EMSG(_(e_invarg));
+ else if (!ends_excmd(*arg))
+ /* ":let var1 var2" */
+ arg = list_arg_vars(eap, arg, &first);
+ else if (!eap->skip) {
+ /* ":let" */
+ list_glob_vars(&first);
+ list_buf_vars(&first);
+ list_win_vars(&first);
+ list_tab_vars(&first);
+ list_script_vars(&first);
+ list_func_vars(&first);
+ list_vim_vars(&first);
+ }
+ eap->nextcmd = check_nextcmd(arg);
+ } else {
+ op[0] = '=';
+ op[1] = NUL;
+ if (*expr != '=') {
+ if (vim_strchr((char_u *)"+-.", *expr) != NULL) {
+ op[0] = *expr; // +=, -=, .=
+ }
+ expr = skipwhite(expr + 2);
+ } else {
+ expr = skipwhite(expr + 1);
+ }
+
+ if (eap->skip)
+ ++emsg_skip;
+ i = eval0(expr, &rettv, &eap->nextcmd, !eap->skip);
+ if (eap->skip) {
+ if (i != FAIL)
+ clear_tv(&rettv);
+ --emsg_skip;
+ } else if (i != FAIL) {
+ (void)ex_let_vars(eap->arg, &rettv, FALSE, semicolon, var_count,
+ op);
+ clear_tv(&rettv);
+ }
+ }
+}
+
+/*
+ * Assign the typevalue "tv" to the variable or variables at "arg_start".
+ * Handles both "var" with any type and "[var, var; var]" with a list type.
+ * When "nextchars" is not NULL it points to a string with characters that
+ * must appear after the variable(s). Use "+", "-" or "." for add, subtract
+ * or concatenate.
+ * Returns OK or FAIL;
+ */
+static int
+ex_let_vars (
+ char_u *arg_start,
+ typval_T *tv,
+ int copy, /* copy values from "tv", don't move */
+ int semicolon, /* from skip_var_list() */
+ int var_count, /* from skip_var_list() */
+ char_u *nextchars
+)
+{
+ char_u *arg = arg_start;
+ list_T *l;
+ int i;
+ listitem_T *item;
+ typval_T ltv;
+
+ if (*arg != '[') {
+ /*
+ * ":let var = expr" or ":for var in list"
+ */
+ if (ex_let_one(arg, tv, copy, nextchars, nextchars) == NULL)
+ return FAIL;
+ return OK;
+ }
+
+ /*
+ * ":let [v1, v2] = list" or ":for [v1, v2] in listlist"
+ */
+ if (tv->v_type != VAR_LIST || (l = tv->vval.v_list) == NULL) {
+ EMSG(_(e_listreq));
+ return FAIL;
+ }
+
+ i = list_len(l);
+ if (semicolon == 0 && var_count < i) {
+ EMSG(_("E687: Less targets than List items"));
+ return FAIL;
+ }
+ if (var_count - semicolon > i) {
+ EMSG(_("E688: More targets than List items"));
+ return FAIL;
+ }
+
+ item = l->lv_first;
+ while (*arg != ']') {
+ arg = skipwhite(arg + 1);
+ arg = ex_let_one(arg, &item->li_tv, TRUE, (char_u *)",;]", nextchars);
+ item = item->li_next;
+ if (arg == NULL)
+ return FAIL;
+
+ arg = skipwhite(arg);
+ if (*arg == ';') {
+ /* Put the rest of the list (may be empty) in the var after ';'.
+ * Create a new list for this. */
+ l = list_alloc();
+ if (l == NULL)
+ return FAIL;
+ while (item != NULL) {
+ list_append_tv(l, &item->li_tv);
+ item = item->li_next;
+ }
+
+ ltv.v_type = VAR_LIST;
+ ltv.v_lock = 0;
+ ltv.vval.v_list = l;
+ l->lv_refcount = 1;
+
+ arg = ex_let_one(skipwhite(arg + 1), &ltv, FALSE,
+ (char_u *)"]", nextchars);
+ clear_tv(&ltv);
+ if (arg == NULL)
+ return FAIL;
+ break;
+ } else if (*arg != ',' && *arg != ']') {
+ EMSG2(_(e_intern2), "ex_let_vars()");
+ return FAIL;
+ }
+ }
+
+ return OK;
+}
+
+/*
+ * Skip over assignable variable "var" or list of variables "[var, var]".
+ * Used for ":let varvar = expr" and ":for varvar in expr".
+ * For "[var, var]" increment "*var_count" for each variable.
+ * for "[var, var; var]" set "semicolon".
+ * Return NULL for an error.
+ */
+static char_u *skip_var_list(char_u *arg, int *var_count, int *semicolon)
+{
+ char_u *p, *s;
+
+ if (*arg == '[') {
+ /* "[var, var]": find the matching ']'. */
+ p = arg;
+ for (;; ) {
+ p = skipwhite(p + 1); /* skip whites after '[', ';' or ',' */
+ s = skip_var_one(p);
+ if (s == p) {
+ EMSG2(_(e_invarg2), p);
+ return NULL;
+ }
+ ++*var_count;
+
+ p = skipwhite(s);
+ if (*p == ']')
+ break;
+ else if (*p == ';') {
+ if (*semicolon == 1) {
+ EMSG(_("Double ; in list of variables"));
+ return NULL;
+ }
+ *semicolon = 1;
+ } else if (*p != ',') {
+ EMSG2(_(e_invarg2), p);
+ return NULL;
+ }
+ }
+ return p + 1;
+ } else
+ return skip_var_one(arg);
+}
+
+/*
+ * Skip one (assignable) variable name, including @r, $VAR, &option, d.key,
+ * l[idx].
+ */
+static char_u *skip_var_one(char_u *arg)
+{
+ if (*arg == '@' && arg[1] != NUL)
+ return arg + 2;
+ return find_name_end(*arg == '$' || *arg == '&' ? arg + 1 : arg,
+ NULL, NULL, FNE_INCL_BR | FNE_CHECK_START);
+}
+
+/*
+ * List variables for hashtab "ht" with prefix "prefix".
+ * If "empty" is TRUE also list NULL strings as empty strings.
+ */
+static void list_hashtable_vars(hashtab_T *ht, char_u *prefix, int empty, int *first)
+{
+ hashitem_T *hi;
+ dictitem_T *di;
+ int todo;
+
+ todo = (int)ht->ht_used;
+ for (hi = ht->ht_array; todo > 0 && !got_int; ++hi) {
+ if (!HASHITEM_EMPTY(hi)) {
+ --todo;
+ di = HI2DI(hi);
+ if (empty || di->di_tv.v_type != VAR_STRING
+ || di->di_tv.vval.v_string != NULL)
+ list_one_var(di, prefix, first);
+ }
+ }
+}
+
+/*
+ * List global variables.
+ */
+static void list_glob_vars(int *first)
+{
+ list_hashtable_vars(&globvarht, (char_u *)"", TRUE, first);
+}
+
+/*
+ * List buffer variables.
+ */
+static void list_buf_vars(int *first)
+{
+ char_u numbuf[NUMBUFLEN];
+
+ list_hashtable_vars(&curbuf->b_vars->dv_hashtab, (char_u *)"b:",
+ TRUE, first);
+
+ sprintf((char *)numbuf, "%" PRId64, (int64_t)curbuf->b_changedtick);
+ list_one_var_a((char_u *)"b:", (char_u *)"changedtick", VAR_NUMBER,
+ numbuf, first);
+}
+
+/*
+ * List window variables.
+ */
+static void list_win_vars(int *first)
+{
+ list_hashtable_vars(&curwin->w_vars->dv_hashtab,
+ (char_u *)"w:", TRUE, first);
+}
+
+/*
+ * List tab page variables.
+ */
+static void list_tab_vars(int *first)
+{
+ list_hashtable_vars(&curtab->tp_vars->dv_hashtab,
+ (char_u *)"t:", TRUE, first);
+}
+
+/*
+ * List Vim variables.
+ */
+static void list_vim_vars(int *first)
+{
+ list_hashtable_vars(&vimvarht, (char_u *)"v:", FALSE, first);
+}
+
+/*
+ * List script-local variables, if there is a script.
+ */
+static void list_script_vars(int *first)
+{
+ if (current_SID > 0 && current_SID <= ga_scripts.ga_len)
+ list_hashtable_vars(&SCRIPT_VARS(current_SID),
+ (char_u *)"s:", FALSE, first);
+}
+
+/*
+ * List function variables, if there is a function.
+ */
+static void list_func_vars(int *first)
+{
+ if (current_funccal != NULL)
+ list_hashtable_vars(&current_funccal->l_vars.dv_hashtab,
+ (char_u *)"l:", FALSE, first);
+}
+
+/*
+ * List variables in "arg".
+ */
+static char_u *list_arg_vars(exarg_T *eap, char_u *arg, int *first)
+{
+ int error = FALSE;
+ int len;
+ char_u *name;
+ char_u *name_start;
+ char_u *arg_subsc;
+ char_u *tofree;
+ typval_T tv;
+
+ while (!ends_excmd(*arg) && !got_int) {
+ if (error || eap->skip) {
+ arg = find_name_end(arg, NULL, NULL, FNE_INCL_BR | FNE_CHECK_START);
+ if (!vim_iswhite(*arg) && !ends_excmd(*arg)) {
+ emsg_severe = TRUE;
+ EMSG(_(e_trailing));
+ break;
+ }
+ } else {
+ /* get_name_len() takes care of expanding curly braces */
+ name_start = name = arg;
+ len = get_name_len(&arg, &tofree, TRUE, TRUE);
+ if (len <= 0) {
+ /* This is mainly to keep test 49 working: when expanding
+ * curly braces fails overrule the exception error message. */
+ if (len < 0 && !aborting()) {
+ emsg_severe = TRUE;
+ EMSG2(_(e_invarg2), arg);
+ break;
+ }
+ error = TRUE;
+ } else {
+ if (tofree != NULL)
+ name = tofree;
+ if (get_var_tv(name, len, &tv, TRUE, FALSE) == FAIL)
+ error = TRUE;
+ else {
+ /* handle d.key, l[idx], f(expr) */
+ arg_subsc = arg;
+ if (handle_subscript(&arg, &tv, TRUE, TRUE) == FAIL)
+ error = TRUE;
+ else {
+ if (arg == arg_subsc && len == 2 && name[1] == ':') {
+ switch (*name) {
+ case 'g': list_glob_vars(first); break;
+ case 'b': list_buf_vars(first); break;
+ case 'w': list_win_vars(first); break;
+ case 't': list_tab_vars(first); break;
+ case 'v': list_vim_vars(first); break;
+ case 's': list_script_vars(first); break;
+ case 'l': list_func_vars(first); break;
+ default:
+ EMSG2(_("E738: Can't list variables for %s"), name);
+ }
+ } else {
+ char_u numbuf[NUMBUFLEN];
+ char_u *tf;
+ int c;
+ char_u *s;
+
+ s = echo_string(&tv, &tf, numbuf, 0);
+ c = *arg;
+ *arg = NUL;
+ list_one_var_a((char_u *)"",
+ arg == arg_subsc ? name : name_start,
+ tv.v_type,
+ s == NULL ? (char_u *)"" : s,
+ first);
+ *arg = c;
+ free(tf);
+ }
+ clear_tv(&tv);
+ }
+ }
+ }
+
+ free(tofree);
+ }
+
+ arg = skipwhite(arg);
+ }
+
+ return arg;
+}
+
+/*
+ * Set one item of ":let var = expr" or ":let [v1, v2] = list" to its value.
+ * Returns a pointer to the char just after the var name.
+ * Returns NULL if there is an error.
+ */
+static char_u *
+ex_let_one (
+ char_u *arg, /* points to variable name */
+ typval_T *tv, /* value to assign to variable */
+ int copy, /* copy value from "tv" */
+ char_u *endchars, /* valid chars after variable name or NULL */
+ char_u *op /* "+", "-", "." or NULL*/
+)
+{
+ int c1;
+ char_u *name;
+ char_u *p;
+ char_u *arg_end = NULL;
+ int len;
+ int opt_flags;
+ char_u *tofree = NULL;
+
+ /*
+ * ":let $VAR = expr": Set environment variable.
+ */
+ if (*arg == '$') {
+ /* Find the end of the name. */
+ ++arg;
+ name = arg;
+ len = get_env_len(&arg);
+ if (len == 0)
+ EMSG2(_(e_invarg2), name - 1);
+ else {
+ if (op != NULL && (*op == '+' || *op == '-'))
+ EMSG2(_(e_letwrong), op);
+ else if (endchars != NULL
+ && vim_strchr(endchars, *skipwhite(arg)) == NULL)
+ EMSG(_(e_letunexp));
+ else if (!check_secure()) {
+ c1 = name[len];
+ name[len] = NUL;
+ p = get_tv_string_chk(tv);
+ if (p != NULL && op != NULL && *op == '.') {
+ int mustfree = FALSE;
+ char_u *s = vim_getenv(name, &mustfree);
+
+ if (s != NULL) {
+ p = tofree = concat_str(s, p);
+ if (mustfree)
+ free(s);
+ }
+ }
+ if (p != NULL) {
+ vim_setenv(name, p);
+ if (STRICMP(name, "HOME") == 0)
+ init_homedir();
+ else if (didset_vim && STRICMP(name, "VIM") == 0)
+ didset_vim = FALSE;
+ else if (didset_vimruntime
+ && STRICMP(name, "VIMRUNTIME") == 0)
+ didset_vimruntime = FALSE;
+ arg_end = arg;
+ }
+ name[len] = c1;
+ free(tofree);
+ }
+ }
+ }
+ /*
+ * ":let &option = expr": Set option value.
+ * ":let &l:option = expr": Set local option value.
+ * ":let &g:option = expr": Set global option value.
+ */
+ else if (*arg == '&') {
+ /* Find the end of the name. */
+ p = find_option_end(&arg, &opt_flags);
+ if (p == NULL || (endchars != NULL
+ && vim_strchr(endchars, *skipwhite(p)) == NULL))
+ EMSG(_(e_letunexp));
+ else {
+ long n;
+ int opt_type;
+ long numval;
+ char_u *stringval = NULL;
+ char_u *s;
+
+ c1 = *p;
+ *p = NUL;
+
+ n = get_tv_number(tv);
+ s = get_tv_string_chk(tv); /* != NULL if number or string */
+ if (s != NULL && op != NULL && *op != '=') {
+ opt_type = get_option_value(arg, &numval,
+ &stringval, opt_flags);
+ if ((opt_type == 1 && *op == '.')
+ || (opt_type == 0 && *op != '.'))
+ EMSG2(_(e_letwrong), op);
+ else {
+ if (opt_type == 1) { /* number */
+ if (*op == '+')
+ n = numval + n;
+ else
+ n = numval - n;
+ } else if (opt_type == 0 && stringval != NULL) { /* string */
+ s = concat_str(stringval, s);
+ free(stringval);
+ stringval = s;
+ }
+ }
+ }
+ if (s != NULL) {
+ set_option_value(arg, n, s, opt_flags);
+ arg_end = p;
+ }
+ *p = c1;
+ free(stringval);
+ }
+ }
+ /*
+ * ":let @r = expr": Set register contents.
+ */
+ else if (*arg == '@') {
+ ++arg;
+ if (op != NULL && (*op == '+' || *op == '-'))
+ EMSG2(_(e_letwrong), op);
+ else if (endchars != NULL
+ && vim_strchr(endchars, *skipwhite(arg + 1)) == NULL)
+ EMSG(_(e_letunexp));
+ else {
+ char_u *ptofree = NULL;
+ char_u *s;
+
+ p = get_tv_string_chk(tv);
+ if (p != NULL && op != NULL && *op == '.') {
+ s = get_reg_contents(*arg == '@' ? '"' : *arg, TRUE, TRUE);
+ if (s != NULL) {
+ p = ptofree = concat_str(s, p);
+ free(s);
+ }
+ }
+ if (p != NULL) {
+ write_reg_contents(*arg == '@' ? '"' : *arg, p, -1, FALSE);
+ arg_end = arg + 1;
+ }
+ free(ptofree);
+ }
+ }
+ /*
+ * ":let var = expr": Set internal variable.
+ * ":let {expr} = expr": Idem, name made with curly braces
+ */
+ else if (eval_isnamec1(*arg) || *arg == '{') {
+ lval_T lv;
+
+ p = get_lval(arg, tv, &lv, FALSE, FALSE, 0, FNE_CHECK_START);
+ if (p != NULL && lv.ll_name != NULL) {
+ if (endchars != NULL && vim_strchr(endchars, *skipwhite(p)) == NULL)
+ EMSG(_(e_letunexp));
+ else {
+ set_var_lval(&lv, p, tv, copy, op);
+ arg_end = p;
+ }
+ }
+ clear_lval(&lv);
+ } else
+ EMSG2(_(e_invarg2), arg);
+
+ return arg_end;
+}
+
+/*
+ * If "arg" is equal to "b:changedtick" give an error and return TRUE.
+ */
+static int check_changedtick(char_u *arg)
+{
+ if (STRNCMP(arg, "b:changedtick", 13) == 0 && !eval_isnamec(arg[13])) {
+ EMSG2(_(e_readonlyvar), arg);
+ return TRUE;
+ }
+ return FALSE;
+}
+
+/*
+ * Get an lval: variable, Dict item or List item that can be assigned a value
+ * to: "name", "na{me}", "name[expr]", "name[expr:expr]", "name[expr][expr]",
+ * "name.key", "name.key[expr]" etc.
+ * Indexing only works if "name" is an existing List or Dictionary.
+ * "name" points to the start of the name.
+ * If "rettv" is not NULL it points to the value to be assigned.
+ * "unlet" is TRUE for ":unlet": slightly different behavior when something is
+ * wrong; must end in space or cmd separator.
+ *
+ * flags:
+ * GLV_QUIET: do not give error messages
+ * GLV_NO_AUTOLOAD: do not use script autoloading
+ *
+ * Returns a pointer to just after the name, including indexes.
+ * When an evaluation error occurs "lp->ll_name" is NULL;
+ * Returns NULL for a parsing error. Still need to free items in "lp"!
+ */
+static char_u *
+get_lval (
+ char_u *name,
+ typval_T *rettv,
+ lval_T *lp,
+ int unlet,
+ int skip,
+ int flags, /* GLV_ values */
+ int fne_flags /* flags for find_name_end() */
+)
+{
+ char_u *p;
+ char_u *expr_start, *expr_end;
+ int cc;
+ dictitem_T *v;
+ typval_T var1;
+ typval_T var2;
+ int empty1 = FALSE;
+ listitem_T *ni;
+ char_u *key = NULL;
+ int len;
+ hashtab_T *ht;
+ int quiet = flags & GLV_QUIET;
+
+ /* Clear everything in "lp". */
+ memset(lp, 0, sizeof(lval_T));
+
+ if (skip) {
+ /* When skipping just find the end of the name. */
+ lp->ll_name = name;
+ return find_name_end(name, NULL, NULL, FNE_INCL_BR | fne_flags);
+ }
+
+ /* Find the end of the name. */
+ p = find_name_end(name, &expr_start, &expr_end, fne_flags);
+ if (expr_start != NULL) {
+ /* Don't expand the name when we already know there is an error. */
+ if (unlet && !vim_iswhite(*p) && !ends_excmd(*p)
+ && *p != '[' && *p != '.') {
+ EMSG(_(e_trailing));
+ return NULL;
+ }
+
+ lp->ll_exp_name = make_expanded_name(name, expr_start, expr_end, p);
+ if (lp->ll_exp_name == NULL) {
+ /* Report an invalid expression in braces, unless the
+ * expression evaluation has been cancelled due to an
+ * aborting error, an interrupt, or an exception. */
+ if (!aborting() && !quiet) {
+ emsg_severe = TRUE;
+ EMSG2(_(e_invarg2), name);
+ return NULL;
+ }
+ }
+ lp->ll_name = lp->ll_exp_name;
+ } else
+ lp->ll_name = name;
+
+ /* Without [idx] or .key we are done. */
+ if ((*p != '[' && *p != '.') || lp->ll_name == NULL)
+ return p;
+
+ cc = *p;
+ *p = NUL;
+ v = find_var(lp->ll_name, &ht, flags & GLV_NO_AUTOLOAD);
+ if (v == NULL && !quiet)
+ EMSG2(_(e_undefvar), lp->ll_name);
+ *p = cc;
+ if (v == NULL)
+ return NULL;
+
+ /*
+ * Loop until no more [idx] or .key is following.
+ */
+ lp->ll_tv = &v->di_tv;
+ while (*p == '[' || (*p == '.' && lp->ll_tv->v_type == VAR_DICT)) {
+ if (!(lp->ll_tv->v_type == VAR_LIST && lp->ll_tv->vval.v_list != NULL)
+ && !(lp->ll_tv->v_type == VAR_DICT
+ && lp->ll_tv->vval.v_dict != NULL)) {
+ if (!quiet)
+ EMSG(_("E689: Can only index a List or Dictionary"));
+ return NULL;
+ }
+ if (lp->ll_range) {
+ if (!quiet)
+ EMSG(_("E708: [:] must come last"));
+ return NULL;
+ }
+
+ len = -1;
+ if (*p == '.') {
+ key = p + 1;
+ for (len = 0; ASCII_ISALNUM(key[len]) || key[len] == '_'; ++len)
+ ;
+ if (len == 0) {
+ if (!quiet)
+ EMSG(_(e_emptykey));
+ return NULL;
+ }
+ p = key + len;
+ } else {
+ /* Get the index [expr] or the first index [expr: ]. */
+ p = skipwhite(p + 1);
+ if (*p == ':')
+ empty1 = TRUE;
+ else {
+ empty1 = FALSE;
+ if (eval1(&p, &var1, TRUE) == FAIL) /* recursive! */
+ return NULL;
+ if (get_tv_string_chk(&var1) == NULL) {
+ /* not a number or string */
+ clear_tv(&var1);
+ return NULL;
+ }
+ }
+
+ /* Optionally get the second index [ :expr]. */
+ if (*p == ':') {
+ if (lp->ll_tv->v_type == VAR_DICT) {
+ if (!quiet)
+ EMSG(_(e_dictrange));
+ if (!empty1)
+ clear_tv(&var1);
+ return NULL;
+ }
+ if (rettv != NULL && (rettv->v_type != VAR_LIST
+ || rettv->vval.v_list == NULL)) {
+ if (!quiet)
+ EMSG(_("E709: [:] requires a List value"));
+ if (!empty1)
+ clear_tv(&var1);
+ return NULL;
+ }
+ p = skipwhite(p + 1);
+ if (*p == ']')
+ lp->ll_empty2 = TRUE;
+ else {
+ lp->ll_empty2 = FALSE;
+ if (eval1(&p, &var2, TRUE) == FAIL) { /* recursive! */
+ if (!empty1)
+ clear_tv(&var1);
+ return NULL;
+ }
+ if (get_tv_string_chk(&var2) == NULL) {
+ /* not a number or string */
+ if (!empty1)
+ clear_tv(&var1);
+ clear_tv(&var2);
+ return NULL;
+ }
+ }
+ lp->ll_range = TRUE;
+ } else
+ lp->ll_range = FALSE;
+
+ if (*p != ']') {
+ if (!quiet)
+ EMSG(_(e_missbrac));
+ if (!empty1)
+ clear_tv(&var1);
+ if (lp->ll_range && !lp->ll_empty2)
+ clear_tv(&var2);
+ return NULL;
+ }
+
+ /* Skip to past ']'. */
+ ++p;
+ }
+
+ if (lp->ll_tv->v_type == VAR_DICT) {
+ if (len == -1) {
+ /* "[key]": get key from "var1" */
+ key = get_tv_string(&var1); /* is number or string */
+ if (*key == NUL) {
+ if (!quiet)
+ EMSG(_(e_emptykey));
+ clear_tv(&var1);
+ return NULL;
+ }
+ }
+ lp->ll_list = NULL;
+ lp->ll_dict = lp->ll_tv->vval.v_dict;
+ lp->ll_di = dict_find(lp->ll_dict, key, len);
+
+ /* When assigning to a scope dictionary check that a function and
+ * variable name is valid (only variable name unless it is l: or
+ * g: dictionary). Disallow overwriting a builtin function. */
+ if (rettv != NULL && lp->ll_dict->dv_scope != 0) {
+ int prevval;
+ int wrong;
+
+ if (len != -1) {
+ prevval = key[len];
+ key[len] = NUL;
+ } else
+ prevval = 0; /* avoid compiler warning */
+ wrong = (lp->ll_dict->dv_scope == VAR_DEF_SCOPE
+ && rettv->v_type == VAR_FUNC
+ && var_check_func_name(key, lp->ll_di == NULL))
+ || !valid_varname(key);
+ if (len != -1)
+ key[len] = prevval;
+ if (wrong)
+ return NULL;
+ }
+
+ if (lp->ll_di == NULL) {
+ /* Can't add "v:" variable. */
+ if (lp->ll_dict == &vimvardict) {
+ EMSG2(_(e_illvar), name);
+ return NULL;
+ }
+
+ /* Key does not exist in dict: may need to add it. */
+ if (*p == '[' || *p == '.' || unlet) {
+ if (!quiet)
+ EMSG2(_(e_dictkey), key);
+ if (len == -1)
+ clear_tv(&var1);
+ return NULL;
+ }
+ if (len == -1)
+ lp->ll_newkey = vim_strsave(key);
+ else
+ lp->ll_newkey = vim_strnsave(key, len);
+ if (len == -1)
+ clear_tv(&var1);
+ if (lp->ll_newkey == NULL)
+ p = NULL;
+ break;
+ }
+ /* existing variable, need to check if it can be changed */
+ else if (var_check_ro(lp->ll_di->di_flags, name))
+ return NULL;
+
+ if (len == -1)
+ clear_tv(&var1);
+ lp->ll_tv = &lp->ll_di->di_tv;
+ } else {
+ /*
+ * Get the number and item for the only or first index of the List.
+ */
+ if (empty1)
+ lp->ll_n1 = 0;
+ else {
+ lp->ll_n1 = get_tv_number(&var1); /* is number or string */
+ clear_tv(&var1);
+ }
+ lp->ll_dict = NULL;
+ lp->ll_list = lp->ll_tv->vval.v_list;
+ lp->ll_li = list_find(lp->ll_list, lp->ll_n1);
+ if (lp->ll_li == NULL) {
+ if (lp->ll_n1 < 0) {
+ lp->ll_n1 = 0;
+ lp->ll_li = list_find(lp->ll_list, lp->ll_n1);
+ }
+ }
+ if (lp->ll_li == NULL) {
+ if (lp->ll_range && !lp->ll_empty2)
+ clear_tv(&var2);
+ if (!quiet)
+ EMSGN(_(e_listidx), lp->ll_n1);
+ return NULL;
+ }
+
+ /*
+ * May need to find the item or absolute index for the second
+ * index of a range.
+ * When no index given: "lp->ll_empty2" is TRUE.
+ * Otherwise "lp->ll_n2" is set to the second index.
+ */
+ if (lp->ll_range && !lp->ll_empty2) {
+ lp->ll_n2 = get_tv_number(&var2); /* is number or string */
+ clear_tv(&var2);
+ if (lp->ll_n2 < 0) {
+ ni = list_find(lp->ll_list, lp->ll_n2);
+ if (ni == NULL) {
+ if (!quiet)
+ EMSGN(_(e_listidx), lp->ll_n2);
+ return NULL;
+ }
+ lp->ll_n2 = list_idx_of_item(lp->ll_list, ni);
+ }
+
+ /* Check that lp->ll_n2 isn't before lp->ll_n1. */
+ if (lp->ll_n1 < 0)
+ lp->ll_n1 = list_idx_of_item(lp->ll_list, lp->ll_li);
+ if (lp->ll_n2 < lp->ll_n1) {
+ if (!quiet)
+ EMSGN(_(e_listidx), lp->ll_n2);
+ return NULL;
+ }
+ }
+
+ lp->ll_tv = &lp->ll_li->li_tv;
+ }
+ }
+
+ return p;
+}
+
+/*
+ * Clear lval "lp" that was filled by get_lval().
+ */
+static void clear_lval(lval_T *lp)
+{
+ free(lp->ll_exp_name);
+ free(lp->ll_newkey);
+}
+
+/*
+ * Set a variable that was parsed by get_lval() to "rettv".
+ * "endp" points to just after the parsed name.
+ * "op" is NULL, "+" for "+=", "-" for "-=", "." for ".=" or "=" for "=".
+ */
+static void set_var_lval(lval_T *lp, char_u *endp, typval_T *rettv, int copy, char_u *op)
+{
+ int cc;
+ listitem_T *ri;
+ dictitem_T *di;
+
+ if (lp->ll_tv == NULL) {
+ if (!check_changedtick(lp->ll_name)) {
+ cc = *endp;
+ *endp = NUL;
+ if (op != NULL && *op != '=') {
+ typval_T tv;
+
+ /* handle +=, -= and .= */
+ if (get_var_tv(lp->ll_name, (int)STRLEN(lp->ll_name),
+ &tv, TRUE, FALSE) == OK) {
+ if (tv_op(&tv, rettv, op) == OK)
+ set_var(lp->ll_name, &tv, FALSE);
+ clear_tv(&tv);
+ }
+ } else
+ set_var(lp->ll_name, rettv, copy);
+ *endp = cc;
+ }
+ } else if (tv_check_lock(lp->ll_newkey == NULL
+ ? lp->ll_tv->v_lock
+ : lp->ll_tv->vval.v_dict->dv_lock, lp->ll_name))
+ ;
+ else if (lp->ll_range) {
+ /*
+ * Assign the List values to the list items.
+ */
+ for (ri = rettv->vval.v_list->lv_first; ri != NULL; ) {
+ if (op != NULL && *op != '=')
+ tv_op(&lp->ll_li->li_tv, &ri->li_tv, op);
+ else {
+ clear_tv(&lp->ll_li->li_tv);
+ copy_tv(&ri->li_tv, &lp->ll_li->li_tv);
+ }
+ ri = ri->li_next;
+ if (ri == NULL || (!lp->ll_empty2 && lp->ll_n2 == lp->ll_n1))
+ break;
+ if (lp->ll_li->li_next == NULL) {
+ /* Need to add an empty item. */
+ list_append_number(lp->ll_list, 0);
+ }
+ lp->ll_li = lp->ll_li->li_next;
+ ++lp->ll_n1;
+ }
+ if (ri != NULL)
+ EMSG(_("E710: List value has more items than target"));
+ else if (lp->ll_empty2
+ ? (lp->ll_li != NULL && lp->ll_li->li_next != NULL)
+ : lp->ll_n1 != lp->ll_n2)
+ EMSG(_("E711: List value has not enough items"));
+ } else {
+ /*
+ * Assign to a List or Dictionary item.
+ */
+ if (lp->ll_newkey != NULL) {
+ if (op != NULL && *op != '=') {
+ EMSG2(_(e_letwrong), op);
+ return;
+ }
+
+ /* Need to add an item to the Dictionary. */
+ di = dictitem_alloc(lp->ll_newkey);
+ if (di == NULL)
+ return;
+ if (dict_add(lp->ll_tv->vval.v_dict, di) == FAIL) {
+ free(di);
+ return;
+ }
+ lp->ll_tv = &di->di_tv;
+ } else if (op != NULL && *op != '=') {
+ tv_op(lp->ll_tv, rettv, op);
+ return;
+ } else
+ clear_tv(lp->ll_tv);
+
+ /*
+ * Assign the value to the variable or list item.
+ */
+ if (copy)
+ copy_tv(rettv, lp->ll_tv);
+ else {
+ *lp->ll_tv = *rettv;
+ lp->ll_tv->v_lock = 0;
+ init_tv(rettv);
+ }
+ }
+}
+
+/*
+ * Handle "tv1 += tv2", "tv1 -= tv2" and "tv1 .= tv2"
+ * Returns OK or FAIL.
+ */
+static int tv_op(typval_T *tv1, typval_T *tv2, char_u *op)
+{
+ long n;
+ char_u numbuf[NUMBUFLEN];
+ char_u *s;
+
+ /* Can't do anything with a Funcref or a Dict on the right. */
+ if (tv2->v_type != VAR_FUNC && tv2->v_type != VAR_DICT) {
+ switch (tv1->v_type) {
+ case VAR_DICT:
+ case VAR_FUNC:
+ break;
+
+ case VAR_LIST:
+ if (*op != '+' || tv2->v_type != VAR_LIST)
+ break;
+ /* List += List */
+ if (tv1->vval.v_list != NULL && tv2->vval.v_list != NULL)
+ list_extend(tv1->vval.v_list, tv2->vval.v_list, NULL);
+ return OK;
+
+ case VAR_NUMBER:
+ case VAR_STRING:
+ if (tv2->v_type == VAR_LIST)
+ break;
+ if (*op == '+' || *op == '-') {
+ /* nr += nr or nr -= nr*/
+ n = get_tv_number(tv1);
+ if (tv2->v_type == VAR_FLOAT) {
+ float_T f = n;
+
+ if (*op == '+')
+ f += tv2->vval.v_float;
+ else
+ f -= tv2->vval.v_float;
+ clear_tv(tv1);
+ tv1->v_type = VAR_FLOAT;
+ tv1->vval.v_float = f;
+ } else {
+ if (*op == '+')
+ n += get_tv_number(tv2);
+ else
+ n -= get_tv_number(tv2);
+ clear_tv(tv1);
+ tv1->v_type = VAR_NUMBER;
+ tv1->vval.v_number = n;
+ }
+ } else {
+ if (tv2->v_type == VAR_FLOAT)
+ break;
+
+ /* str .= str */
+ s = get_tv_string(tv1);
+ s = concat_str(s, get_tv_string_buf(tv2, numbuf));
+ clear_tv(tv1);
+ tv1->v_type = VAR_STRING;
+ tv1->vval.v_string = s;
+ }
+ return OK;
+
+ case VAR_FLOAT:
+ {
+ float_T f;
+
+ if (*op == '.' || (tv2->v_type != VAR_FLOAT
+ && tv2->v_type != VAR_NUMBER
+ && tv2->v_type != VAR_STRING))
+ break;
+ if (tv2->v_type == VAR_FLOAT)
+ f = tv2->vval.v_float;
+ else
+ f = get_tv_number(tv2);
+ if (*op == '+')
+ tv1->vval.v_float += f;
+ else
+ tv1->vval.v_float -= f;
+ }
+ return OK;
+ }
+ }
+
+ EMSG2(_(e_letwrong), op);
+ return FAIL;
+}
+
+/*
+ * Add a watcher to a list.
+ */
+void list_add_watch(list_T *l, listwatch_T *lw)
+{
+ lw->lw_next = l->lv_watch;
+ l->lv_watch = lw;
+}
+
+/*
+ * Remove a watcher from a list.
+ * No warning when it isn't found...
+ */
+void list_rem_watch(list_T *l, listwatch_T *lwrem)
+{
+ listwatch_T *lw, **lwp;
+
+ lwp = &l->lv_watch;
+ for (lw = l->lv_watch; lw != NULL; lw = lw->lw_next) {
+ if (lw == lwrem) {
+ *lwp = lw->lw_next;
+ break;
+ }
+ lwp = &lw->lw_next;
+ }
+}
+
+/*
+ * Just before removing an item from a list: advance watchers to the next
+ * item.
+ */
+static void list_fix_watch(list_T *l, listitem_T *item)
+{
+ listwatch_T *lw;
+
+ for (lw = l->lv_watch; lw != NULL; lw = lw->lw_next)
+ if (lw->lw_item == item)
+ lw->lw_item = item->li_next;
+}
+
+/*
+ * Evaluate the expression used in a ":for var in expr" command.
+ * "arg" points to "var".
+ * Set "*errp" to TRUE for an error, FALSE otherwise;
+ * Return a pointer that holds the info. Null when there is an error.
+ */
+void *eval_for_line(char_u *arg, int *errp, char_u **nextcmdp, int skip)
+{
+ forinfo_T *fi = xcalloc(1, sizeof(forinfo_T));
+ char_u *expr;
+ typval_T tv;
+ list_T *l;
+
+ *errp = TRUE; /* default: there is an error */
+
+ expr = skip_var_list(arg, &fi->fi_varcount, &fi->fi_semicolon);
+ if (expr == NULL)
+ return fi;
+
+ expr = skipwhite(expr);
+ if (expr[0] != 'i' || expr[1] != 'n' || !vim_iswhite(expr[2])) {
+ EMSG(_("E690: Missing \"in\" after :for"));
+ return fi;
+ }
+
+ if (skip)
+ ++emsg_skip;
+ if (eval0(skipwhite(expr + 2), &tv, nextcmdp, !skip) == OK) {
+ *errp = FALSE;
+ if (!skip) {
+ l = tv.vval.v_list;
+ if (tv.v_type != VAR_LIST || l == NULL) {
+ EMSG(_(e_listreq));
+ clear_tv(&tv);
+ } else {
+ /* No need to increment the refcount, it's already set for the
+ * list being used in "tv". */
+ fi->fi_list = l;
+ list_add_watch(l, &fi->fi_lw);
+ fi->fi_lw.lw_item = l->lv_first;
+ }
+ }
+ }
+ if (skip)
+ --emsg_skip;
+
+ return fi;
+}
+
+/*
+ * Use the first item in a ":for" list. Advance to the next.
+ * Assign the values to the variable (list). "arg" points to the first one.
+ * Return TRUE when a valid item was found, FALSE when at end of list or
+ * something wrong.
+ */
+int next_for_item(void *fi_void, char_u *arg)
+{
+ forinfo_T *fi = (forinfo_T *)fi_void;
+ int result;
+ listitem_T *item;
+
+ item = fi->fi_lw.lw_item;
+ if (item == NULL)
+ result = FALSE;
+ else {
+ fi->fi_lw.lw_item = item->li_next;
+ result = (ex_let_vars(arg, &item->li_tv, TRUE,
+ fi->fi_semicolon, fi->fi_varcount, NULL) == OK);
+ }
+ return result;
+}
+
+/*
+ * Free the structure used to store info used by ":for".
+ */
+void free_for_info(void *fi_void)
+{
+ forinfo_T *fi = (forinfo_T *)fi_void;
+
+ if (fi != NULL && fi->fi_list != NULL) {
+ list_rem_watch(fi->fi_list, &fi->fi_lw);
+ list_unref(fi->fi_list);
+ }
+ free(fi);
+}
+
+
+void set_context_for_expression(expand_T *xp, char_u *arg, cmdidx_T cmdidx)
+{
+ int got_eq = FALSE;
+ int c;
+ char_u *p;
+
+ if (cmdidx == CMD_let) {
+ xp->xp_context = EXPAND_USER_VARS;
+ if (vim_strpbrk(arg, (char_u *)"\"'+-*/%.=!?~|&$([<>,#") == NULL) {
+ /* ":let var1 var2 ...": find last space. */
+ for (p = arg + STRLEN(arg); p >= arg; ) {
+ xp->xp_pattern = p;
+ mb_ptr_back(arg, p);
+ if (vim_iswhite(*p))
+ break;
+ }
+ return;
+ }
+ } else
+ xp->xp_context = cmdidx == CMD_call ? EXPAND_FUNCTIONS
+ : EXPAND_EXPRESSION;
+ while ((xp->xp_pattern = vim_strpbrk(arg,
+ (char_u *)"\"'+-*/%.=!?~|&$([<>,#")) != NULL) {
+ c = *xp->xp_pattern;
+ if (c == '&') {
+ c = xp->xp_pattern[1];
+ if (c == '&') {
+ ++xp->xp_pattern;
+ xp->xp_context = cmdidx != CMD_let || got_eq
+ ? EXPAND_EXPRESSION : EXPAND_NOTHING;
+ } else if (c != ' ') {
+ xp->xp_context = EXPAND_SETTINGS;
+ if ((c == 'l' || c == 'g') && xp->xp_pattern[2] == ':')
+ xp->xp_pattern += 2;
+
+ }
+ } else if (c == '$') {
+ /* environment variable */
+ xp->xp_context = EXPAND_ENV_VARS;
+ } else if (c == '=') {
+ got_eq = TRUE;
+ xp->xp_context = EXPAND_EXPRESSION;
+ } else if (c == '<'
+ && xp->xp_context == EXPAND_FUNCTIONS
+ && vim_strchr(xp->xp_pattern, '(') == NULL) {
+ /* Function name can start with "<SNR>" */
+ break;
+ } else if (cmdidx != CMD_let || got_eq) {
+ if (c == '"') { /* string */
+ while ((c = *++xp->xp_pattern) != NUL && c != '"')
+ if (c == '\\' && xp->xp_pattern[1] != NUL)
+ ++xp->xp_pattern;
+ xp->xp_context = EXPAND_NOTHING;
+ } else if (c == '\'') { /* literal string */
+ /* Trick: '' is like stopping and starting a literal string. */
+ while ((c = *++xp->xp_pattern) != NUL && c != '\'')
+ /* skip */;
+ xp->xp_context = EXPAND_NOTHING;
+ } else if (c == '|') {
+ if (xp->xp_pattern[1] == '|') {
+ ++xp->xp_pattern;
+ xp->xp_context = EXPAND_EXPRESSION;
+ } else
+ xp->xp_context = EXPAND_COMMANDS;
+ } else
+ xp->xp_context = EXPAND_EXPRESSION;
+ } else
+ /* Doesn't look like something valid, expand as an expression
+ * anyway. */
+ xp->xp_context = EXPAND_EXPRESSION;
+ arg = xp->xp_pattern;
+ if (*arg != NUL)
+ while ((c = *++arg) != NUL && (c == ' ' || c == '\t'))
+ /* skip */;
+ }
+ xp->xp_pattern = arg;
+}
+
+
+/*
+ * ":1,25call func(arg1, arg2)" function call.
+ */
+void ex_call(exarg_T *eap)
+{
+ char_u *arg = eap->arg;
+ char_u *startarg;
+ char_u *name;
+ char_u *tofree;
+ int len;
+ typval_T rettv;
+ linenr_T lnum;
+ int doesrange;
+ int failed = FALSE;
+ funcdict_T fudi;
+
+ if (eap->skip) {
+ /* trans_function_name() doesn't work well when skipping, use eval0()
+ * instead to skip to any following command, e.g. for:
+ * :if 0 | call dict.foo().bar() | endif */
+ ++emsg_skip;
+ if (eval0(eap->arg, &rettv, &eap->nextcmd, FALSE) != FAIL)
+ clear_tv(&rettv);
+ --emsg_skip;
+ return;
+ }
+
+ tofree = trans_function_name(&arg, eap->skip, TFN_INT, &fudi);
+ if (fudi.fd_newkey != NULL) {
+ /* Still need to give an error message for missing key. */
+ EMSG2(_(e_dictkey), fudi.fd_newkey);
+ free(fudi.fd_newkey);
+ }
+ if (tofree == NULL)
+ return;
+
+ /* Increase refcount on dictionary, it could get deleted when evaluating
+ * the arguments. */
+ if (fudi.fd_dict != NULL)
+ ++fudi.fd_dict->dv_refcount;
+
+ /* If it is the name of a variable of type VAR_FUNC use its contents. */
+ len = (int)STRLEN(tofree);
+ name = deref_func_name(tofree, &len, FALSE);
+
+ /* Skip white space to allow ":call func ()". Not good, but required for
+ * backward compatibility. */
+ startarg = skipwhite(arg);
+ rettv.v_type = VAR_UNKNOWN; /* clear_tv() uses this */
+
+ if (*startarg != '(') {
+ EMSG2(_("E107: Missing parentheses: %s"), eap->arg);
+ goto end;
+ }
+
+ /*
+ * When skipping, evaluate the function once, to find the end of the
+ * arguments.
+ * When the function takes a range, this is discovered after the first
+ * call, and the loop is broken.
+ */
+ if (eap->skip) {
+ ++emsg_skip;
+ lnum = eap->line2; /* do it once, also with an invalid range */
+ } else
+ lnum = eap->line1;
+ for (; lnum <= eap->line2; ++lnum) {
+ if (!eap->skip && eap->addr_count > 0) {
+ curwin->w_cursor.lnum = lnum;
+ curwin->w_cursor.col = 0;
+ curwin->w_cursor.coladd = 0;
+ }
+ arg = startarg;
+ if (get_func_tv(name, (int)STRLEN(name), &rettv, &arg,
+ eap->line1, eap->line2, &doesrange,
+ !eap->skip, fudi.fd_dict) == FAIL) {
+ failed = TRUE;
+ break;
+ }
+
+ /* Handle a function returning a Funcref, Dictionary or List. */
+ if (handle_subscript(&arg, &rettv, !eap->skip, TRUE) == FAIL) {
+ failed = TRUE;
+ break;
+ }
+
+ clear_tv(&rettv);
+ if (doesrange || eap->skip)
+ break;
+
+ /* Stop when immediately aborting on error, or when an interrupt
+ * occurred or an exception was thrown but not caught.
+ * get_func_tv() returned OK, so that the check for trailing
+ * characters below is executed. */
+ if (aborting())
+ break;
+ }
+ if (eap->skip)
+ --emsg_skip;
+
+ if (!failed) {
+ /* Check for trailing illegal characters and a following command. */
+ if (!ends_excmd(*arg)) {
+ emsg_severe = TRUE;
+ EMSG(_(e_trailing));
+ } else
+ eap->nextcmd = check_nextcmd(arg);
+ }
+
+end:
+ dict_unref(fudi.fd_dict);
+ free(tofree);
+}
+
+/*
+ * ":unlet[!] var1 ... " command.
+ */
+void ex_unlet(exarg_T *eap)
+{
+ ex_unletlock(eap, eap->arg, 0);
+}
+
+/*
+ * ":lockvar" and ":unlockvar" commands
+ */
+void ex_lockvar(exarg_T *eap)
+{
+ char_u *arg = eap->arg;
+ int deep = 2;
+
+ if (eap->forceit)
+ deep = -1;
+ else if (vim_isdigit(*arg)) {
+ deep = getdigits(&arg);
+ arg = skipwhite(arg);
+ }
+
+ ex_unletlock(eap, arg, deep);
+}
+
+/*
+ * ":unlet", ":lockvar" and ":unlockvar" are quite similar.
+ */
+static void ex_unletlock(exarg_T *eap, char_u *argstart, int deep)
+{
+ char_u *arg = argstart;
+ char_u *name_end;
+ int error = FALSE;
+ lval_T lv;
+
+ do {
+ /* Parse the name and find the end. */
+ name_end = get_lval(arg, NULL, &lv, TRUE, eap->skip || error, 0,
+ FNE_CHECK_START);
+ if (lv.ll_name == NULL)
+ error = TRUE; /* error but continue parsing */
+ if (name_end == NULL || (!vim_iswhite(*name_end)
+ && !ends_excmd(*name_end))) {
+ if (name_end != NULL) {
+ emsg_severe = TRUE;
+ EMSG(_(e_trailing));
+ }
+ if (!(eap->skip || error))
+ clear_lval(&lv);
+ break;
+ }
+
+ if (!error && !eap->skip) {
+ if (eap->cmdidx == CMD_unlet) {
+ if (do_unlet_var(&lv, name_end, eap->forceit) == FAIL)
+ error = TRUE;
+ } else {
+ if (do_lock_var(&lv, name_end, deep,
+ eap->cmdidx == CMD_lockvar) == FAIL)
+ error = TRUE;
+ }
+ }
+
+ if (!eap->skip)
+ clear_lval(&lv);
+
+ arg = skipwhite(name_end);
+ } while (!ends_excmd(*arg));
+
+ eap->nextcmd = check_nextcmd(arg);
+}
+
+static int do_unlet_var(lval_T *lp, char_u *name_end, int forceit)
+{
+ int ret = OK;
+ int cc;
+
+ if (lp->ll_tv == NULL) {
+ cc = *name_end;
+ *name_end = NUL;
+
+ /* Normal name or expanded name. */
+ if (check_changedtick(lp->ll_name))
+ ret = FAIL;
+ else if (do_unlet(lp->ll_name, forceit) == FAIL)
+ ret = FAIL;
+ *name_end = cc;
+ } else if (tv_check_lock(lp->ll_tv->v_lock, lp->ll_name))
+ return FAIL;
+ else if (lp->ll_range) {
+ listitem_T *li;
+
+ /* Delete a range of List items. */
+ while (lp->ll_li != NULL && (lp->ll_empty2 || lp->ll_n2 >= lp->ll_n1)) {
+ li = lp->ll_li->li_next;
+ listitem_remove(lp->ll_list, lp->ll_li);
+ lp->ll_li = li;
+ ++lp->ll_n1;
+ }
+ } else {
+ if (lp->ll_list != NULL)
+ /* unlet a List item. */
+ listitem_remove(lp->ll_list, lp->ll_li);
+ else
+ /* unlet a Dictionary item. */
+ dictitem_remove(lp->ll_dict, lp->ll_di);
+ }
+
+ return ret;
+}
+
+/*
+ * "unlet" a variable. Return OK if it existed, FAIL if not.
+ * When "forceit" is TRUE don't complain if the variable doesn't exist.
+ */
+int do_unlet(char_u *name, int forceit)
+{
+ hashtab_T *ht;
+ hashitem_T *hi;
+ char_u *varname;
+ dictitem_T *di;
+
+ ht = find_var_ht(name, &varname);
+ if (ht != NULL && *varname != NUL) {
+ hi = hash_find(ht, varname);
+ if (!HASHITEM_EMPTY(hi)) {
+ di = HI2DI(hi);
+ if (var_check_fixed(di->di_flags, name)
+ || var_check_ro(di->di_flags, name))
+ return FAIL;
+ delete_var(ht, hi);
+ return OK;
+ }
+ }
+ if (forceit)
+ return OK;
+ EMSG2(_("E108: No such variable: \"%s\""), name);
+ return FAIL;
+}
+
+/*
+ * Lock or unlock variable indicated by "lp".
+ * "deep" is the levels to go (-1 for unlimited);
+ * "lock" is TRUE for ":lockvar", FALSE for ":unlockvar".
+ */
+static int do_lock_var(lval_T *lp, char_u *name_end, int deep, int lock)
+{
+ int ret = OK;
+ int cc;
+ dictitem_T *di;
+
+ if (deep == 0) /* nothing to do */
+ return OK;
+
+ if (lp->ll_tv == NULL) {
+ cc = *name_end;
+ *name_end = NUL;
+
+ /* Normal name or expanded name. */
+ if (check_changedtick(lp->ll_name))
+ ret = FAIL;
+ else {
+ di = find_var(lp->ll_name, NULL, TRUE);
+ if (di == NULL)
+ ret = FAIL;
+ else {
+ if (lock)
+ di->di_flags |= DI_FLAGS_LOCK;
+ else
+ di->di_flags &= ~DI_FLAGS_LOCK;
+ item_lock(&di->di_tv, deep, lock);
+ }
+ }
+ *name_end = cc;
+ } else if (lp->ll_range) {
+ listitem_T *li = lp->ll_li;
+
+ /* (un)lock a range of List items. */
+ while (li != NULL && (lp->ll_empty2 || lp->ll_n2 >= lp->ll_n1)) {
+ item_lock(&li->li_tv, deep, lock);
+ li = li->li_next;
+ ++lp->ll_n1;
+ }
+ } else if (lp->ll_list != NULL)
+ /* (un)lock a List item. */
+ item_lock(&lp->ll_li->li_tv, deep, lock);
+ else
+ /* un(lock) a Dictionary item. */
+ item_lock(&lp->ll_di->di_tv, deep, lock);
+
+ return ret;
+}
+
+/*
+ * Lock or unlock an item. "deep" is nr of levels to go.
+ */
+static void item_lock(typval_T *tv, int deep, int lock)
+{
+ static int recurse = 0;
+ list_T *l;
+ listitem_T *li;
+ dict_T *d;
+ hashitem_T *hi;
+ int todo;
+
+ if (recurse >= DICT_MAXNEST) {
+ EMSG(_("E743: variable nested too deep for (un)lock"));
+ return;
+ }
+ if (deep == 0)
+ return;
+ ++recurse;
+
+ /* lock/unlock the item itself */
+ if (lock)
+ tv->v_lock |= VAR_LOCKED;
+ else
+ tv->v_lock &= ~VAR_LOCKED;
+
+ switch (tv->v_type) {
+ case VAR_LIST:
+ if ((l = tv->vval.v_list) != NULL) {
+ if (lock)
+ l->lv_lock |= VAR_LOCKED;
+ else
+ l->lv_lock &= ~VAR_LOCKED;
+ if (deep < 0 || deep > 1)
+ /* recursive: lock/unlock the items the List contains */
+ for (li = l->lv_first; li != NULL; li = li->li_next)
+ item_lock(&li->li_tv, deep - 1, lock);
+ }
+ break;
+ case VAR_DICT:
+ if ((d = tv->vval.v_dict) != NULL) {
+ if (lock)
+ d->dv_lock |= VAR_LOCKED;
+ else
+ d->dv_lock &= ~VAR_LOCKED;
+ if (deep < 0 || deep > 1) {
+ /* recursive: lock/unlock the items the List contains */
+ todo = (int)d->dv_hashtab.ht_used;
+ for (hi = d->dv_hashtab.ht_array; todo > 0; ++hi) {
+ if (!HASHITEM_EMPTY(hi)) {
+ --todo;
+ item_lock(&HI2DI(hi)->di_tv, deep - 1, lock);
+ }
+ }
+ }
+ }
+ }
+ --recurse;
+}
+
+/*
+ * Return TRUE if typeval "tv" is locked: Either that value is locked itself
+ * or it refers to a List or Dictionary that is locked.
+ */
+static int tv_islocked(typval_T *tv)
+{
+ return (tv->v_lock & VAR_LOCKED)
+ || (tv->v_type == VAR_LIST
+ && tv->vval.v_list != NULL
+ && (tv->vval.v_list->lv_lock & VAR_LOCKED))
+ || (tv->v_type == VAR_DICT
+ && tv->vval.v_dict != NULL
+ && (tv->vval.v_dict->dv_lock & VAR_LOCKED));
+}
+
+/*
+ * Delete all "menutrans_" variables.
+ */
+void del_menutrans_vars(void)
+{
+ hashitem_T *hi;
+ int todo;
+
+ hash_lock(&globvarht);
+ todo = (int)globvarht.ht_used;
+ for (hi = globvarht.ht_array; todo > 0 && !got_int; ++hi) {
+ if (!HASHITEM_EMPTY(hi)) {
+ --todo;
+ if (STRNCMP(HI2DI(hi)->di_key, "menutrans_", 10) == 0)
+ delete_var(&globvarht, hi);
+ }
+ }
+ hash_unlock(&globvarht);
+}
+
+/*
+ * Local string buffer for the next two functions to store a variable name
+ * with its prefix. Allocated in cat_prefix_varname(), freed later in
+ * get_user_var_name().
+ */
+
+static char_u *cat_prefix_varname(int prefix, char_u *name);
+
+static char_u *varnamebuf = NULL;
+static int varnamebuflen = 0;
+
+/*
+ * Function to concatenate a prefix and a variable name.
+ */
+static char_u *cat_prefix_varname(int prefix, char_u *name)
+{
+ int len;
+
+ len = (int)STRLEN(name) + 3;
+ if (len > varnamebuflen) {
+ free(varnamebuf);
+ len += 10; /* some additional space */
+ varnamebuf = alloc(len);
+ if (varnamebuf == NULL) {
+ varnamebuflen = 0;
+ return NULL;
+ }
+ varnamebuflen = len;
+ }
+ *varnamebuf = prefix;
+ varnamebuf[1] = ':';
+ STRCPY(varnamebuf + 2, name);
+ return varnamebuf;
+}
+
+/*
+ * Function given to ExpandGeneric() to obtain the list of user defined
+ * (global/buffer/window/built-in) variable names.
+ */
+char_u *get_user_var_name(expand_T *xp, int idx)
+{
+ static long_u gdone;
+ static long_u bdone;
+ static long_u wdone;
+ static long_u tdone;
+ static int vidx;
+ static hashitem_T *hi;
+ hashtab_T *ht;
+
+ if (idx == 0) {
+ gdone = bdone = wdone = vidx = 0;
+ tdone = 0;
+ }
+
+ /* Global variables */
+ if (gdone < globvarht.ht_used) {
+ if (gdone++ == 0)
+ hi = globvarht.ht_array;
+ else
+ ++hi;
+ while (HASHITEM_EMPTY(hi))
+ ++hi;
+ if (STRNCMP("g:", xp->xp_pattern, 2) == 0)
+ return cat_prefix_varname('g', hi->hi_key);
+ return hi->hi_key;
+ }
+
+ /* b: variables */
+ ht = &curbuf->b_vars->dv_hashtab;
+ if (bdone < ht->ht_used) {
+ if (bdone++ == 0)
+ hi = ht->ht_array;
+ else
+ ++hi;
+ while (HASHITEM_EMPTY(hi))
+ ++hi;
+ return cat_prefix_varname('b', hi->hi_key);
+ }
+ if (bdone == ht->ht_used) {
+ ++bdone;
+ return (char_u *)"b:changedtick";
+ }
+
+ /* w: variables */
+ ht = &curwin->w_vars->dv_hashtab;
+ if (wdone < ht->ht_used) {
+ if (wdone++ == 0)
+ hi = ht->ht_array;
+ else
+ ++hi;
+ while (HASHITEM_EMPTY(hi))
+ ++hi;
+ return cat_prefix_varname('w', hi->hi_key);
+ }
+
+ /* t: variables */
+ ht = &curtab->tp_vars->dv_hashtab;
+ if (tdone < ht->ht_used) {
+ if (tdone++ == 0)
+ hi = ht->ht_array;
+ else
+ ++hi;
+ while (HASHITEM_EMPTY(hi))
+ ++hi;
+ return cat_prefix_varname('t', hi->hi_key);
+ }
+
+ /* v: variables */
+ if (vidx < VV_LEN)
+ return cat_prefix_varname('v', (char_u *)vimvars[vidx++].vv_name);
+
+ free(varnamebuf);
+ varnamebuf = NULL;
+ varnamebuflen = 0;
+ return NULL;
+}
+
+
+/*
+ * types for expressions.
+ */
+typedef enum {
+ TYPE_UNKNOWN = 0
+ , TYPE_EQUAL /* == */
+ , TYPE_NEQUAL /* != */
+ , TYPE_GREATER /* > */
+ , TYPE_GEQUAL /* >= */
+ , TYPE_SMALLER /* < */
+ , TYPE_SEQUAL /* <= */
+ , TYPE_MATCH /* =~ */
+ , TYPE_NOMATCH /* !~ */
+} exptype_T;
+
+/*
+ * The "evaluate" argument: When FALSE, the argument is only parsed but not
+ * executed. The function may return OK, but the rettv will be of type
+ * VAR_UNKNOWN. The function still returns FAIL for a syntax error.
+ */
+
+/*
+ * Handle zero level expression.
+ * This calls eval1() and handles error message and nextcmd.
+ * Put the result in "rettv" when returning OK and "evaluate" is TRUE.
+ * Note: "rettv.v_lock" is not set.
+ * Return OK or FAIL.
+ */
+static int eval0(char_u *arg, typval_T *rettv, char_u **nextcmd, int evaluate)
+{
+ int ret;
+ char_u *p;
+
+ p = skipwhite(arg);
+ ret = eval1(&p, rettv, evaluate);
+ if (ret == FAIL || !ends_excmd(*p)) {
+ if (ret != FAIL)
+ clear_tv(rettv);
+ /*
+ * Report the invalid expression unless the expression evaluation has
+ * been cancelled due to an aborting error, an interrupt, or an
+ * exception.
+ */
+ if (!aborting())
+ EMSG2(_(e_invexpr2), arg);
+ ret = FAIL;
+ }
+ if (nextcmd != NULL)
+ *nextcmd = check_nextcmd(p);
+
+ return ret;
+}
+
+/*
+ * Handle top level expression:
+ * expr2 ? expr1 : expr1
+ *
+ * "arg" must point to the first non-white of the expression.
+ * "arg" is advanced to the next non-white after the recognized expression.
+ *
+ * Note: "rettv.v_lock" is not set.
+ *
+ * Return OK or FAIL.
+ */
+static int eval1(char_u **arg, typval_T *rettv, int evaluate)
+{
+ int result;
+ typval_T var2;
+
+ /*
+ * Get the first variable.
+ */
+ if (eval2(arg, rettv, evaluate) == FAIL)
+ return FAIL;
+
+ if ((*arg)[0] == '?') {
+ result = FALSE;
+ if (evaluate) {
+ int error = FALSE;
+
+ if (get_tv_number_chk(rettv, &error) != 0)
+ result = TRUE;
+ clear_tv(rettv);
+ if (error)
+ return FAIL;
+ }
+
+ /*
+ * Get the second variable.
+ */
+ *arg = skipwhite(*arg + 1);
+ if (eval1(arg, rettv, evaluate && result) == FAIL) /* recursive! */
+ return FAIL;
+
+ /*
+ * Check for the ":".
+ */
+ if ((*arg)[0] != ':') {
+ EMSG(_("E109: Missing ':' after '?'"));
+ if (evaluate && result)
+ clear_tv(rettv);
+ return FAIL;
+ }
+
+ /*
+ * Get the third variable.
+ */
+ *arg = skipwhite(*arg + 1);
+ if (eval1(arg, &var2, evaluate && !result) == FAIL) { /* recursive! */
+ if (evaluate && result)
+ clear_tv(rettv);
+ return FAIL;
+ }
+ if (evaluate && !result)
+ *rettv = var2;
+ }
+
+ return OK;
+}
+
+/*
+ * Handle first level expression:
+ * expr2 || expr2 || expr2 logical OR
+ *
+ * "arg" must point to the first non-white of the expression.
+ * "arg" is advanced to the next non-white after the recognized expression.
+ *
+ * Return OK or FAIL.
+ */
+static int eval2(char_u **arg, typval_T *rettv, int evaluate)
+{
+ typval_T var2;
+ long result;
+ int first;
+ int error = FALSE;
+
+ /*
+ * Get the first variable.
+ */
+ if (eval3(arg, rettv, evaluate) == FAIL)
+ return FAIL;
+
+ /*
+ * Repeat until there is no following "||".
+ */
+ first = TRUE;
+ result = FALSE;
+ while ((*arg)[0] == '|' && (*arg)[1] == '|') {
+ if (evaluate && first) {
+ if (get_tv_number_chk(rettv, &error) != 0)
+ result = TRUE;
+ clear_tv(rettv);
+ if (error)
+ return FAIL;
+ first = FALSE;
+ }
+
+ /*
+ * Get the second variable.
+ */
+ *arg = skipwhite(*arg + 2);
+ if (eval3(arg, &var2, evaluate && !result) == FAIL)
+ return FAIL;
+
+ /*
+ * Compute the result.
+ */
+ if (evaluate && !result) {
+ if (get_tv_number_chk(&var2, &error) != 0)
+ result = TRUE;
+ clear_tv(&var2);
+ if (error)
+ return FAIL;
+ }
+ if (evaluate) {
+ rettv->v_type = VAR_NUMBER;
+ rettv->vval.v_number = result;
+ }
+ }
+
+ return OK;
+}
+
+/*
+ * Handle second level expression:
+ * expr3 && expr3 && expr3 logical AND
+ *
+ * "arg" must point to the first non-white of the expression.
+ * "arg" is advanced to the next non-white after the recognized expression.
+ *
+ * Return OK or FAIL.
+ */
+static int eval3(char_u **arg, typval_T *rettv, int evaluate)
+{
+ typval_T var2;
+ long result;
+ int first;
+ int error = FALSE;
+
+ /*
+ * Get the first variable.
+ */
+ if (eval4(arg, rettv, evaluate) == FAIL)
+ return FAIL;
+
+ /*
+ * Repeat until there is no following "&&".
+ */
+ first = TRUE;
+ result = TRUE;
+ while ((*arg)[0] == '&' && (*arg)[1] == '&') {
+ if (evaluate && first) {
+ if (get_tv_number_chk(rettv, &error) == 0)
+ result = FALSE;
+ clear_tv(rettv);
+ if (error)
+ return FAIL;
+ first = FALSE;
+ }
+
+ /*
+ * Get the second variable.
+ */
+ *arg = skipwhite(*arg + 2);
+ if (eval4(arg, &var2, evaluate && result) == FAIL)
+ return FAIL;
+
+ /*
+ * Compute the result.
+ */
+ if (evaluate && result) {
+ if (get_tv_number_chk(&var2, &error) == 0)
+ result = FALSE;
+ clear_tv(&var2);
+ if (error)
+ return FAIL;
+ }
+ if (evaluate) {
+ rettv->v_type = VAR_NUMBER;
+ rettv->vval.v_number = result;
+ }
+ }
+
+ return OK;
+}
+
+/*
+ * Handle third level expression:
+ * var1 == var2
+ * var1 =~ var2
+ * var1 != var2
+ * var1 !~ var2
+ * var1 > var2
+ * var1 >= var2
+ * var1 < var2
+ * var1 <= var2
+ * var1 is var2
+ * var1 isnot var2
+ *
+ * "arg" must point to the first non-white of the expression.
+ * "arg" is advanced to the next non-white after the recognized expression.
+ *
+ * Return OK or FAIL.
+ */
+static int eval4(char_u **arg, typval_T *rettv, int evaluate)
+{
+ typval_T var2;
+ char_u *p;
+ int i;
+ exptype_T type = TYPE_UNKNOWN;
+ int type_is = FALSE; /* TRUE for "is" and "isnot" */
+ int len = 2;
+ long n1, n2;
+ char_u *s1, *s2;
+ char_u buf1[NUMBUFLEN], buf2[NUMBUFLEN];
+ regmatch_T regmatch;
+ int ic;
+ char_u *save_cpo;
+
+ /*
+ * Get the first variable.
+ */
+ if (eval5(arg, rettv, evaluate) == FAIL)
+ return FAIL;
+
+ p = *arg;
+ switch (p[0]) {
+ case '=': if (p[1] == '=')
+ type = TYPE_EQUAL;
+ else if (p[1] == '~')
+ type = TYPE_MATCH;
+ break;
+ case '!': if (p[1] == '=')
+ type = TYPE_NEQUAL;
+ else if (p[1] == '~')
+ type = TYPE_NOMATCH;
+ break;
+ case '>': if (p[1] != '=') {
+ type = TYPE_GREATER;
+ len = 1;
+ } else
+ type = TYPE_GEQUAL;
+ break;
+ case '<': if (p[1] != '=') {
+ type = TYPE_SMALLER;
+ len = 1;
+ } else
+ type = TYPE_SEQUAL;
+ break;
+ case 'i': if (p[1] == 's') {
+ if (p[2] == 'n' && p[3] == 'o' && p[4] == 't')
+ len = 5;
+ if (!vim_isIDc(p[len])) {
+ type = len == 2 ? TYPE_EQUAL : TYPE_NEQUAL;
+ type_is = TRUE;
+ }
+ }
+ break;
+ }
+
+ /*
+ * If there is a comparative operator, use it.
+ */
+ if (type != TYPE_UNKNOWN) {
+ /* extra question mark appended: ignore case */
+ if (p[len] == '?') {
+ ic = TRUE;
+ ++len;
+ }
+ /* extra '#' appended: match case */
+ else if (p[len] == '#') {
+ ic = FALSE;
+ ++len;
+ }
+ /* nothing appended: use 'ignorecase' */
+ else
+ ic = p_ic;
+
+ /*
+ * Get the second variable.
+ */
+ *arg = skipwhite(p + len);
+ if (eval5(arg, &var2, evaluate) == FAIL) {
+ clear_tv(rettv);
+ return FAIL;
+ }
+
+ if (evaluate) {
+ if (type_is && rettv->v_type != var2.v_type) {
+ /* For "is" a different type always means FALSE, for "notis"
+ * it means TRUE. */
+ n1 = (type == TYPE_NEQUAL);
+ } else if (rettv->v_type == VAR_LIST || var2.v_type == VAR_LIST) {
+ if (type_is) {
+ n1 = (rettv->v_type == var2.v_type
+ && rettv->vval.v_list == var2.vval.v_list);
+ if (type == TYPE_NEQUAL)
+ n1 = !n1;
+ } else if (rettv->v_type != var2.v_type
+ || (type != TYPE_EQUAL && type != TYPE_NEQUAL)) {
+ if (rettv->v_type != var2.v_type)
+ EMSG(_("E691: Can only compare List with List"));
+ else
+ EMSG(_("E692: Invalid operation for Lists"));
+ clear_tv(rettv);
+ clear_tv(&var2);
+ return FAIL;
+ } else {
+ /* Compare two Lists for being equal or unequal. */
+ n1 = list_equal(rettv->vval.v_list, var2.vval.v_list,
+ ic, FALSE);
+ if (type == TYPE_NEQUAL)
+ n1 = !n1;
+ }
+ } else if (rettv->v_type == VAR_DICT || var2.v_type == VAR_DICT) {
+ if (type_is) {
+ n1 = (rettv->v_type == var2.v_type
+ && rettv->vval.v_dict == var2.vval.v_dict);
+ if (type == TYPE_NEQUAL)
+ n1 = !n1;
+ } else if (rettv->v_type != var2.v_type
+ || (type != TYPE_EQUAL && type != TYPE_NEQUAL)) {
+ if (rettv->v_type != var2.v_type)
+ EMSG(_("E735: Can only compare Dictionary with Dictionary"));
+ else
+ EMSG(_("E736: Invalid operation for Dictionary"));
+ clear_tv(rettv);
+ clear_tv(&var2);
+ return FAIL;
+ } else {
+ /* Compare two Dictionaries for being equal or unequal. */
+ n1 = dict_equal(rettv->vval.v_dict, var2.vval.v_dict,
+ ic, FALSE);
+ if (type == TYPE_NEQUAL)
+ n1 = !n1;
+ }
+ } else if (rettv->v_type == VAR_FUNC || var2.v_type == VAR_FUNC) {
+ if (rettv->v_type != var2.v_type
+ || (type != TYPE_EQUAL && type != TYPE_NEQUAL)) {
+ if (rettv->v_type != var2.v_type)
+ EMSG(_("E693: Can only compare Funcref with Funcref"));
+ else
+ EMSG(_("E694: Invalid operation for Funcrefs"));
+ clear_tv(rettv);
+ clear_tv(&var2);
+ return FAIL;
+ } else {
+ /* Compare two Funcrefs for being equal or unequal. */
+ if (rettv->vval.v_string == NULL
+ || var2.vval.v_string == NULL)
+ n1 = FALSE;
+ else
+ n1 = STRCMP(rettv->vval.v_string,
+ var2.vval.v_string) == 0;
+ if (type == TYPE_NEQUAL)
+ n1 = !n1;
+ }
+ }
+ /*
+ * If one of the two variables is a float, compare as a float.
+ * When using "=~" or "!~", always compare as string.
+ */
+ else if ((rettv->v_type == VAR_FLOAT || var2.v_type == VAR_FLOAT)
+ && type != TYPE_MATCH && type != TYPE_NOMATCH) {
+ float_T f1, f2;
+
+ if (rettv->v_type == VAR_FLOAT)
+ f1 = rettv->vval.v_float;
+ else
+ f1 = get_tv_number(rettv);
+ if (var2.v_type == VAR_FLOAT)
+ f2 = var2.vval.v_float;
+ else
+ f2 = get_tv_number(&var2);
+ n1 = FALSE;
+ switch (type) {
+ case TYPE_EQUAL: n1 = (f1 == f2); break;
+ case TYPE_NEQUAL: n1 = (f1 != f2); break;
+ case TYPE_GREATER: n1 = (f1 > f2); break;
+ case TYPE_GEQUAL: n1 = (f1 >= f2); break;
+ case TYPE_SMALLER: n1 = (f1 < f2); break;
+ case TYPE_SEQUAL: n1 = (f1 <= f2); break;
+ case TYPE_UNKNOWN:
+ case TYPE_MATCH:
+ case TYPE_NOMATCH: break; /* avoid gcc warning */
+ }
+ }
+ /*
+ * If one of the two variables is a number, compare as a number.
+ * When using "=~" or "!~", always compare as string.
+ */
+ else if ((rettv->v_type == VAR_NUMBER || var2.v_type == VAR_NUMBER)
+ && type != TYPE_MATCH && type != TYPE_NOMATCH) {
+ n1 = get_tv_number(rettv);
+ n2 = get_tv_number(&var2);
+ switch (type) {
+ case TYPE_EQUAL: n1 = (n1 == n2); break;
+ case TYPE_NEQUAL: n1 = (n1 != n2); break;
+ case TYPE_GREATER: n1 = (n1 > n2); break;
+ case TYPE_GEQUAL: n1 = (n1 >= n2); break;
+ case TYPE_SMALLER: n1 = (n1 < n2); break;
+ case TYPE_SEQUAL: n1 = (n1 <= n2); break;
+ case TYPE_UNKNOWN:
+ case TYPE_MATCH:
+ case TYPE_NOMATCH: break; /* avoid gcc warning */
+ }
+ } else {
+ s1 = get_tv_string_buf(rettv, buf1);
+ s2 = get_tv_string_buf(&var2, buf2);
+ if (type != TYPE_MATCH && type != TYPE_NOMATCH)
+ i = ic ? MB_STRICMP(s1, s2) : STRCMP(s1, s2);
+ else
+ i = 0;
+ n1 = FALSE;
+ switch (type) {
+ case TYPE_EQUAL: n1 = (i == 0); break;
+ case TYPE_NEQUAL: n1 = (i != 0); break;
+ case TYPE_GREATER: n1 = (i > 0); break;
+ case TYPE_GEQUAL: n1 = (i >= 0); break;
+ case TYPE_SMALLER: n1 = (i < 0); break;
+ case TYPE_SEQUAL: n1 = (i <= 0); break;
+
+ case TYPE_MATCH:
+ case TYPE_NOMATCH:
+ /* avoid 'l' flag in 'cpoptions' */
+ save_cpo = p_cpo;
+ p_cpo = (char_u *)"";
+ regmatch.regprog = vim_regcomp(s2,
+ RE_MAGIC + RE_STRING);
+ regmatch.rm_ic = ic;
+ if (regmatch.regprog != NULL) {
+ n1 = vim_regexec_nl(&regmatch, s1, (colnr_T)0);
+ vim_regfree(regmatch.regprog);
+ if (type == TYPE_NOMATCH)
+ n1 = !n1;
+ }
+ p_cpo = save_cpo;
+ break;
+
+ case TYPE_UNKNOWN: break; /* avoid gcc warning */
+ }
+ }
+ clear_tv(rettv);
+ clear_tv(&var2);
+ rettv->v_type = VAR_NUMBER;
+ rettv->vval.v_number = n1;
+ }
+ }
+
+ return OK;
+}
+
+/*
+ * Handle fourth level expression:
+ * + number addition
+ * - number subtraction
+ * . string concatenation
+ *
+ * "arg" must point to the first non-white of the expression.
+ * "arg" is advanced to the next non-white after the recognized expression.
+ *
+ * Return OK or FAIL.
+ */
+static int eval5(char_u **arg, typval_T *rettv, int evaluate)
+{
+ typval_T var2;
+ typval_T var3;
+ int op;
+ long n1, n2;
+ float_T f1 = 0, f2 = 0;
+ char_u *s1, *s2;
+ char_u buf1[NUMBUFLEN], buf2[NUMBUFLEN];
+ char_u *p;
+
+ /*
+ * Get the first variable.
+ */
+ if (eval6(arg, rettv, evaluate, FALSE) == FAIL)
+ return FAIL;
+
+ /*
+ * Repeat computing, until no '+', '-' or '.' is following.
+ */
+ for (;; ) {
+ op = **arg;
+ if (op != '+' && op != '-' && op != '.')
+ break;
+
+ if ((op != '+' || rettv->v_type != VAR_LIST)
+ && (op == '.' || rettv->v_type != VAR_FLOAT)
+ ) {
+ /* For "list + ...", an illegal use of the first operand as
+ * a number cannot be determined before evaluating the 2nd
+ * operand: if this is also a list, all is ok.
+ * For "something . ...", "something - ..." or "non-list + ...",
+ * we know that the first operand needs to be a string or number
+ * without evaluating the 2nd operand. So check before to avoid
+ * side effects after an error. */
+ if (evaluate && get_tv_string_chk(rettv) == NULL) {
+ clear_tv(rettv);
+ return FAIL;
+ }
+ }
+
+ /*
+ * Get the second variable.
+ */
+ *arg = skipwhite(*arg + 1);
+ if (eval6(arg, &var2, evaluate, op == '.') == FAIL) {
+ clear_tv(rettv);
+ return FAIL;
+ }
+
+ if (evaluate) {
+ /*
+ * Compute the result.
+ */
+ if (op == '.') {
+ s1 = get_tv_string_buf(rettv, buf1); /* already checked */
+ s2 = get_tv_string_buf_chk(&var2, buf2);
+ if (s2 == NULL) { /* type error ? */
+ clear_tv(rettv);
+ clear_tv(&var2);
+ return FAIL;
+ }
+ p = concat_str(s1, s2);
+ clear_tv(rettv);
+ rettv->v_type = VAR_STRING;
+ rettv->vval.v_string = p;
+ } else if (op == '+' && rettv->v_type == VAR_LIST
+ && var2.v_type == VAR_LIST) {
+ /* concatenate Lists */
+ if (list_concat(rettv->vval.v_list, var2.vval.v_list,
+ &var3) == FAIL) {
+ clear_tv(rettv);
+ clear_tv(&var2);
+ return FAIL;
+ }
+ clear_tv(rettv);
+ *rettv = var3;
+ } else {
+ int error = FALSE;
+
+ if (rettv->v_type == VAR_FLOAT) {
+ f1 = rettv->vval.v_float;
+ n1 = 0;
+ } else {
+ n1 = get_tv_number_chk(rettv, &error);
+ if (error) {
+ /* This can only happen for "list + non-list". For
+ * "non-list + ..." or "something - ...", we returned
+ * before evaluating the 2nd operand. */
+ clear_tv(rettv);
+ return FAIL;
+ }
+ if (var2.v_type == VAR_FLOAT)
+ f1 = n1;
+ }
+ if (var2.v_type == VAR_FLOAT) {
+ f2 = var2.vval.v_float;
+ n2 = 0;
+ } else {
+ n2 = get_tv_number_chk(&var2, &error);
+ if (error) {
+ clear_tv(rettv);
+ clear_tv(&var2);
+ return FAIL;
+ }
+ if (rettv->v_type == VAR_FLOAT)
+ f2 = n2;
+ }
+ clear_tv(rettv);
+
+ /* If there is a float on either side the result is a float. */
+ if (rettv->v_type == VAR_FLOAT || var2.v_type == VAR_FLOAT) {
+ if (op == '+')
+ f1 = f1 + f2;
+ else
+ f1 = f1 - f2;
+ rettv->v_type = VAR_FLOAT;
+ rettv->vval.v_float = f1;
+ } else {
+ if (op == '+')
+ n1 = n1 + n2;
+ else
+ n1 = n1 - n2;
+ rettv->v_type = VAR_NUMBER;
+ rettv->vval.v_number = n1;
+ }
+ }
+ clear_tv(&var2);
+ }
+ }
+ return OK;
+}
+
+/*
+ * Handle fifth level expression:
+ * * number multiplication
+ * / number division
+ * % number modulo
+ *
+ * "arg" must point to the first non-white of the expression.
+ * "arg" is advanced to the next non-white after the recognized expression.
+ *
+ * Return OK or FAIL.
+ */
+static int
+eval6 (
+ char_u **arg,
+ typval_T *rettv,
+ int evaluate,
+ int want_string /* after "." operator */
+)
+{
+ typval_T var2;
+ int op;
+ long n1, n2;
+ int use_float = FALSE;
+ float_T f1 = 0, f2;
+ int error = FALSE;
+
+ /*
+ * Get the first variable.
+ */
+ if (eval7(arg, rettv, evaluate, want_string) == FAIL)
+ return FAIL;
+
+ /*
+ * Repeat computing, until no '*', '/' or '%' is following.
+ */
+ for (;; ) {
+ op = **arg;
+ if (op != '*' && op != '/' && op != '%')
+ break;
+
+ if (evaluate) {
+ if (rettv->v_type == VAR_FLOAT) {
+ f1 = rettv->vval.v_float;
+ use_float = TRUE;
+ n1 = 0;
+ } else
+ n1 = get_tv_number_chk(rettv, &error);
+ clear_tv(rettv);
+ if (error)
+ return FAIL;
+ } else
+ n1 = 0;
+
+ /*
+ * Get the second variable.
+ */
+ *arg = skipwhite(*arg + 1);
+ if (eval7(arg, &var2, evaluate, FALSE) == FAIL)
+ return FAIL;
+
+ if (evaluate) {
+ if (var2.v_type == VAR_FLOAT) {
+ if (!use_float) {
+ f1 = n1;
+ use_float = TRUE;
+ }
+ f2 = var2.vval.v_float;
+ n2 = 0;
+ } else {
+ n2 = get_tv_number_chk(&var2, &error);
+ clear_tv(&var2);
+ if (error)
+ return FAIL;
+ if (use_float)
+ f2 = n2;
+ }
+
+ /*
+ * Compute the result.
+ * When either side is a float the result is a float.
+ */
+ if (use_float) {
+ if (op == '*')
+ f1 = f1 * f2;
+ else if (op == '/') {
+ /* We rely on the floating point library to handle divide
+ * by zero to result in "inf" and not a crash. */
+ f1 = f2 != 0 ? f1 / f2 : INFINITY;
+ } else {
+ EMSG(_("E804: Cannot use '%' with Float"));
+ return FAIL;
+ }
+ rettv->v_type = VAR_FLOAT;
+ rettv->vval.v_float = f1;
+ } else {
+ if (op == '*')
+ n1 = n1 * n2;
+ else if (op == '/') {
+ if (n2 == 0) { /* give an error message? */
+ if (n1 == 0)
+ n1 = -0x7fffffffL - 1L; /* similar to NaN */
+ else if (n1 < 0)
+ n1 = -0x7fffffffL;
+ else
+ n1 = 0x7fffffffL;
+ } else
+ n1 = n1 / n2;
+ } else {
+ if (n2 == 0) /* give an error message? */
+ n1 = 0;
+ else
+ n1 = n1 % n2;
+ }
+ rettv->v_type = VAR_NUMBER;
+ rettv->vval.v_number = n1;
+ }
+ }
+ }
+
+ return OK;
+}
+
+/*
+ * Handle sixth level expression:
+ * number number constant
+ * "string" string constant
+ * 'string' literal string constant
+ * &option-name option value
+ * @r register contents
+ * identifier variable value
+ * function() function call
+ * $VAR environment variable
+ * (expression) nested expression
+ * [expr, expr] List
+ * {key: val, key: val} Dictionary
+ *
+ * Also handle:
+ * ! in front logical NOT
+ * - in front unary minus
+ * + in front unary plus (ignored)
+ * trailing [] subscript in String or List
+ * trailing .name entry in Dictionary
+ *
+ * "arg" must point to the first non-white of the expression.
+ * "arg" is advanced to the next non-white after the recognized expression.
+ *
+ * Return OK or FAIL.
+ */
+static int
+eval7 (
+ char_u **arg,
+ typval_T *rettv,
+ int evaluate,
+ int want_string /* after "." operator */
+)
+{
+ long n;
+ int len;
+ char_u *s;
+ char_u *start_leader, *end_leader;
+ int ret = OK;
+ char_u *alias;
+
+ /*
+ * Initialise variable so that clear_tv() can't mistake this for a
+ * string and free a string that isn't there.
+ */
+ rettv->v_type = VAR_UNKNOWN;
+
+ /*
+ * Skip '!' and '-' characters. They are handled later.
+ */
+ start_leader = *arg;
+ while (**arg == '!' || **arg == '-' || **arg == '+')
+ *arg = skipwhite(*arg + 1);
+ end_leader = *arg;
+
+ switch (**arg) {
+ /*
+ * Number constant.
+ */
+ case '0':
+ case '1':
+ case '2':
+ case '3':
+ case '4':
+ case '5':
+ case '6':
+ case '7':
+ case '8':
+ case '9':
+ {
+ char_u *p = skipdigits(*arg + 1);
+ int get_float = FALSE;
+
+ /* We accept a float when the format matches
+ * "[0-9]\+\.[0-9]\+\([eE][+-]\?[0-9]\+\)\?". This is very
+ * strict to avoid backwards compatibility problems.
+ * Don't look for a float after the "." operator, so that
+ * ":let vers = 1.2.3" doesn't fail. */
+ if (!want_string && p[0] == '.' && vim_isdigit(p[1])) {
+ get_float = TRUE;
+ p = skipdigits(p + 2);
+ if (*p == 'e' || *p == 'E') {
+ ++p;
+ if (*p == '-' || *p == '+')
+ ++p;
+ if (!vim_isdigit(*p))
+ get_float = FALSE;
+ else
+ p = skipdigits(p + 1);
+ }
+ if (ASCII_ISALPHA(*p) || *p == '.')
+ get_float = FALSE;
+ }
+ if (get_float) {
+ float_T f;
+
+ *arg += string2float(*arg, &f);
+ if (evaluate) {
+ rettv->v_type = VAR_FLOAT;
+ rettv->vval.v_float = f;
+ }
+ } else {
+ vim_str2nr(*arg, NULL, &len, TRUE, TRUE, &n, NULL);
+ *arg += len;
+ if (evaluate) {
+ rettv->v_type = VAR_NUMBER;
+ rettv->vval.v_number = n;
+ }
+ }
+ break;
+ }
+
+ /*
+ * String constant: "string".
+ */
+ case '"': ret = get_string_tv(arg, rettv, evaluate);
+ break;
+
+ /*
+ * Literal string constant: 'str''ing'.
+ */
+ case '\'': ret = get_lit_string_tv(arg, rettv, evaluate);
+ break;
+
+ /*
+ * List: [expr, expr]
+ */
+ case '[': ret = get_list_tv(arg, rettv, evaluate);
+ break;
+
+ /*
+ * Dictionary: {key: val, key: val}
+ */
+ case '{': ret = get_dict_tv(arg, rettv, evaluate);
+ break;
+
+ /*
+ * Option value: &name
+ */
+ case '&': ret = get_option_tv(arg, rettv, evaluate);
+ break;
+
+ /*
+ * Environment variable: $VAR.
+ */
+ case '$': ret = get_env_tv(arg, rettv, evaluate);
+ break;
+
+ /*
+ * Register contents: @r.
+ */
+ case '@': ++*arg;
+ if (evaluate) {
+ rettv->v_type = VAR_STRING;
+ rettv->vval.v_string = get_reg_contents(**arg, TRUE, TRUE);
+ }
+ if (**arg != NUL)
+ ++*arg;
+ break;
+
+ /*
+ * nested expression: (expression).
+ */
+ case '(': *arg = skipwhite(*arg + 1);
+ ret = eval1(arg, rettv, evaluate); /* recursive! */
+ if (**arg == ')')
+ ++*arg;
+ else if (ret == OK) {
+ EMSG(_("E110: Missing ')'"));
+ clear_tv(rettv);
+ ret = FAIL;
+ }
+ break;
+
+ default: ret = NOTDONE;
+ break;
+ }
+
+ if (ret == NOTDONE) {
+ /*
+ * Must be a variable or function name.
+ * Can also be a curly-braces kind of name: {expr}.
+ */
+ s = *arg;
+ len = get_name_len(arg, &alias, evaluate, TRUE);
+ if (alias != NULL)
+ s = alias;
+
+ if (len <= 0)
+ ret = FAIL;
+ else {
+ if (**arg == '(') { /* recursive! */
+ /* If "s" is the name of a variable of type VAR_FUNC
+ * use its contents. */
+ s = deref_func_name(s, &len, !evaluate);
+
+ /* Invoke the function. */
+ ret = get_func_tv(s, len, rettv, arg,
+ curwin->w_cursor.lnum, curwin->w_cursor.lnum,
+ &len, evaluate, NULL);
+
+ /* If evaluate is FALSE rettv->v_type was not set in
+ * get_func_tv, but it's needed in handle_subscript() to parse
+ * what follows. So set it here. */
+ if (rettv->v_type == VAR_UNKNOWN && !evaluate && **arg == '(') {
+ rettv->vval.v_string = (char_u *)"";
+ rettv->v_type = VAR_FUNC;
+ }
+
+ /* Stop the expression evaluation when immediately
+ * aborting on error, or when an interrupt occurred or
+ * an exception was thrown but not caught. */
+ if (aborting()) {
+ if (ret == OK)
+ clear_tv(rettv);
+ ret = FAIL;
+ }
+ } else if (evaluate)
+ ret = get_var_tv(s, len, rettv, TRUE, FALSE);
+ else
+ ret = OK;
+ }
+ free(alias);
+ }
+
+ *arg = skipwhite(*arg);
+
+ /* Handle following '[', '(' and '.' for expr[expr], expr.name,
+ * expr(expr). */
+ if (ret == OK)
+ ret = handle_subscript(arg, rettv, evaluate, TRUE);
+
+ /*
+ * Apply logical NOT and unary '-', from right to left, ignore '+'.
+ */
+ if (ret == OK && evaluate && end_leader > start_leader) {
+ int error = FALSE;
+ int val = 0;
+ float_T f = 0.0;
+
+ if (rettv->v_type == VAR_FLOAT)
+ f = rettv->vval.v_float;
+ else
+ val = get_tv_number_chk(rettv, &error);
+ if (error) {
+ clear_tv(rettv);
+ ret = FAIL;
+ } else {
+ while (end_leader > start_leader) {
+ --end_leader;
+ if (*end_leader == '!') {
+ if (rettv->v_type == VAR_FLOAT)
+ f = !f;
+ else
+ val = !val;
+ } else if (*end_leader == '-') {
+ if (rettv->v_type == VAR_FLOAT)
+ f = -f;
+ else
+ val = -val;
+ }
+ }
+ if (rettv->v_type == VAR_FLOAT) {
+ clear_tv(rettv);
+ rettv->vval.v_float = f;
+ } else {
+ clear_tv(rettv);
+ rettv->v_type = VAR_NUMBER;
+ rettv->vval.v_number = val;
+ }
+ }
+ }
+
+ return ret;
+}
+
+/*
+ * Evaluate an "[expr]" or "[expr:expr]" index. Also "dict.key".
+ * "*arg" points to the '[' or '.'.
+ * Returns FAIL or OK. "*arg" is advanced to after the ']'.
+ */
+static int
+eval_index (
+ char_u **arg,
+ typval_T *rettv,
+ int evaluate,
+ int verbose /* give error messages */
+)
+{
+ int empty1 = FALSE, empty2 = FALSE;
+ typval_T var1, var2;
+ long n1, n2 = 0;
+ long len = -1;
+ int range = FALSE;
+ char_u *s;
+ char_u *key = NULL;
+
+ if (rettv->v_type == VAR_FUNC) {
+ if (verbose)
+ EMSG(_("E695: Cannot index a Funcref"));
+ return FAIL;
+ } else if (rettv->v_type == VAR_FLOAT) {
+ if (verbose)
+ EMSG(_(e_float_as_string));
+ return FAIL;
+ }
+
+ if (**arg == '.') {
+ /*
+ * dict.name
+ */
+ key = *arg + 1;
+ for (len = 0; ASCII_ISALNUM(key[len]) || key[len] == '_'; ++len)
+ ;
+ if (len == 0)
+ return FAIL;
+ *arg = skipwhite(key + len);
+ } else {
+ /*
+ * something[idx]
+ *
+ * Get the (first) variable from inside the [].
+ */
+ *arg = skipwhite(*arg + 1);
+ if (**arg == ':')
+ empty1 = TRUE;
+ else if (eval1(arg, &var1, evaluate) == FAIL) /* recursive! */
+ return FAIL;
+ else if (evaluate && get_tv_string_chk(&var1) == NULL) {
+ /* not a number or string */
+ clear_tv(&var1);
+ return FAIL;
+ }
+
+ /*
+ * Get the second variable from inside the [:].
+ */
+ if (**arg == ':') {
+ range = TRUE;
+ *arg = skipwhite(*arg + 1);
+ if (**arg == ']')
+ empty2 = TRUE;
+ else if (eval1(arg, &var2, evaluate) == FAIL) { /* recursive! */
+ if (!empty1)
+ clear_tv(&var1);
+ return FAIL;
+ } else if (evaluate && get_tv_string_chk(&var2) == NULL) {
+ /* not a number or string */
+ if (!empty1)
+ clear_tv(&var1);
+ clear_tv(&var2);
+ return FAIL;
+ }
+ }
+
+ /* Check for the ']'. */
+ if (**arg != ']') {
+ if (verbose)
+ EMSG(_(e_missbrac));
+ clear_tv(&var1);
+ if (range)
+ clear_tv(&var2);
+ return FAIL;
+ }
+ *arg = skipwhite(*arg + 1); /* skip the ']' */
+ }
+
+ if (evaluate) {
+ n1 = 0;
+ if (!empty1 && rettv->v_type != VAR_DICT) {
+ n1 = get_tv_number(&var1);
+ clear_tv(&var1);
+ }
+ if (range) {
+ if (empty2)
+ n2 = -1;
+ else {
+ n2 = get_tv_number(&var2);
+ clear_tv(&var2);
+ }
+ }
+
+ switch (rettv->v_type) {
+ case VAR_NUMBER:
+ case VAR_STRING:
+ s = get_tv_string(rettv);
+ len = (long)STRLEN(s);
+ if (range) {
+ /* The resulting variable is a substring. If the indexes
+ * are out of range the result is empty. */
+ if (n1 < 0) {
+ n1 = len + n1;
+ if (n1 < 0)
+ n1 = 0;
+ }
+ if (n2 < 0)
+ n2 = len + n2;
+ else if (n2 >= len)
+ n2 = len;
+ if (n1 >= len || n2 < 0 || n1 > n2)
+ s = NULL;
+ else
+ s = vim_strnsave(s + n1, (int)(n2 - n1 + 1));
+ } else {
+ /* The resulting variable is a string of a single
+ * character. If the index is too big or negative the
+ * result is empty. */
+ if (n1 >= len || n1 < 0)
+ s = NULL;
+ else
+ s = vim_strnsave(s + n1, 1);
+ }
+ clear_tv(rettv);
+ rettv->v_type = VAR_STRING;
+ rettv->vval.v_string = s;
+ break;
+
+ case VAR_LIST:
+ len = list_len(rettv->vval.v_list);
+ if (n1 < 0)
+ n1 = len + n1;
+ if (!empty1 && (n1 < 0 || n1 >= len)) {
+ /* For a range we allow invalid values and return an empty
+ * list. A list index out of range is an error. */
+ if (!range) {
+ if (verbose)
+ EMSGN(_(e_listidx), n1);
+ return FAIL;
+ }
+ n1 = len;
+ }
+ if (range) {
+ list_T *l;
+ listitem_T *item;
+
+ if (n2 < 0)
+ n2 = len + n2;
+ else if (n2 >= len)
+ n2 = len - 1;
+ if (!empty2 && (n2 < 0 || n2 + 1 < n1))
+ n2 = -1;
+ l = list_alloc();
+ if (l == NULL)
+ return FAIL;
+ item = list_find(rettv->vval.v_list, n1);
+ while (n1++ <= n2) {
+ list_append_tv(l, &item->li_tv);
+ item = item->li_next;
+ }
+ clear_tv(rettv);
+ rettv->v_type = VAR_LIST;
+ rettv->vval.v_list = l;
+ ++l->lv_refcount;
+ } else {
+ copy_tv(&list_find(rettv->vval.v_list, n1)->li_tv, &var1);
+ clear_tv(rettv);
+ *rettv = var1;
+ }
+ break;
+
+ case VAR_DICT:
+ if (range) {
+ if (verbose)
+ EMSG(_(e_dictrange));
+ if (len == -1)
+ clear_tv(&var1);
+ return FAIL;
+ }
+ {
+ dictitem_T *item;
+
+ if (len == -1) {
+ key = get_tv_string(&var1);
+ if (*key == NUL) {
+ if (verbose)
+ EMSG(_(e_emptykey));
+ clear_tv(&var1);
+ return FAIL;
+ }
+ }
+
+ item = dict_find(rettv->vval.v_dict, key, (int)len);
+
+ if (item == NULL && verbose)
+ EMSG2(_(e_dictkey), key);
+ if (len == -1)
+ clear_tv(&var1);
+ if (item == NULL)
+ return FAIL;
+
+ copy_tv(&item->di_tv, &var1);
+ clear_tv(rettv);
+ *rettv = var1;
+ }
+ break;
+ }
+ }
+
+ return OK;
+}
+
+/*
+ * Get an option value.
+ * "arg" points to the '&' or '+' before the option name.
+ * "arg" is advanced to character after the option name.
+ * Return OK or FAIL.
+ */
+static int
+get_option_tv (
+ char_u **arg,
+ typval_T *rettv, /* when NULL, only check if option exists */
+ int evaluate
+)
+{
+ char_u *option_end;
+ long numval;
+ char_u *stringval;
+ int opt_type;
+ int c;
+ int working = (**arg == '+'); /* has("+option") */
+ int ret = OK;
+ int opt_flags;
+
+ /*
+ * Isolate the option name and find its value.
+ */
+ option_end = find_option_end(arg, &opt_flags);
+ if (option_end == NULL) {
+ if (rettv != NULL)
+ EMSG2(_("E112: Option name missing: %s"), *arg);
+ return FAIL;
+ }
+
+ if (!evaluate) {
+ *arg = option_end;
+ return OK;
+ }
+
+ c = *option_end;
+ *option_end = NUL;
+ opt_type = get_option_value(*arg, &numval,
+ rettv == NULL ? NULL : &stringval, opt_flags);
+
+ if (opt_type == -3) { /* invalid name */
+ if (rettv != NULL)
+ EMSG2(_("E113: Unknown option: %s"), *arg);
+ ret = FAIL;
+ } else if (rettv != NULL) {
+ if (opt_type == -2) { /* hidden string option */
+ rettv->v_type = VAR_STRING;
+ rettv->vval.v_string = NULL;
+ } else if (opt_type == -1) { /* hidden number option */
+ rettv->v_type = VAR_NUMBER;
+ rettv->vval.v_number = 0;
+ } else if (opt_type == 1) { /* number option */
+ rettv->v_type = VAR_NUMBER;
+ rettv->vval.v_number = numval;
+ } else { /* string option */
+ rettv->v_type = VAR_STRING;
+ rettv->vval.v_string = stringval;
+ }
+ } else if (working && (opt_type == -2 || opt_type == -1))
+ ret = FAIL;
+
+ *option_end = c; /* put back for error messages */
+ *arg = option_end;
+
+ return ret;
+}
+
+/*
+ * Allocate a variable for a string constant.
+ * Return OK or FAIL.
+ */
+static int get_string_tv(char_u **arg, typval_T *rettv, int evaluate)
+{
+ char_u *p;
+ char_u *name;
+ int extra = 0;
+
+ /*
+ * Find the end of the string, skipping backslashed characters.
+ */
+ for (p = *arg + 1; *p != NUL && *p != '"'; mb_ptr_adv(p)) {
+ if (*p == '\\' && p[1] != NUL) {
+ ++p;
+ /* A "\<x>" form occupies at least 4 characters, and produces up
+ * to 6 characters: reserve space for 2 extra */
+ if (*p == '<')
+ extra += 2;
+ }
+ }
+
+ if (*p != '"') {
+ EMSG2(_("E114: Missing quote: %s"), *arg);
+ return FAIL;
+ }
+
+ /* If only parsing, set *arg and return here */
+ if (!evaluate) {
+ *arg = p + 1;
+ return OK;
+ }
+
+ /*
+ * Copy the string into allocated memory, handling backslashed
+ * characters.
+ */
+ name = alloc((unsigned)(p - *arg + extra));
+ if (name == NULL)
+ return FAIL;
+ rettv->v_type = VAR_STRING;
+ rettv->vval.v_string = name;
+
+ for (p = *arg + 1; *p != NUL && *p != '"'; ) {
+ if (*p == '\\') {
+ switch (*++p) {
+ case 'b': *name++ = BS; ++p; break;
+ case 'e': *name++ = ESC; ++p; break;
+ case 'f': *name++ = FF; ++p; break;
+ case 'n': *name++ = NL; ++p; break;
+ case 'r': *name++ = CAR; ++p; break;
+ case 't': *name++ = TAB; ++p; break;
+
+ case 'X': /* hex: "\x1", "\x12" */
+ case 'x':
+ case 'u': /* Unicode: "\u0023" */
+ case 'U':
+ if (vim_isxdigit(p[1])) {
+ int n, nr;
+ int c = toupper(*p);
+
+ if (c == 'X')
+ n = 2;
+ else
+ n = 4;
+ nr = 0;
+ while (--n >= 0 && vim_isxdigit(p[1])) {
+ ++p;
+ nr = (nr << 4) + hex2nr(*p);
+ }
+ ++p;
+ /* For "\u" store the number according to
+ * 'encoding'. */
+ if (c != 'X')
+ name += (*mb_char2bytes)(nr, name);
+ else
+ *name++ = nr;
+ }
+ break;
+
+ /* octal: "\1", "\12", "\123" */
+ case '0':
+ case '1':
+ case '2':
+ case '3':
+ case '4':
+ case '5':
+ case '6':
+ case '7': *name = *p++ - '0';
+ if (*p >= '0' && *p <= '7') {
+ *name = (*name << 3) + *p++ - '0';
+ if (*p >= '0' && *p <= '7')
+ *name = (*name << 3) + *p++ - '0';
+ }
+ ++name;
+ break;
+
+ /* Special key, e.g.: "\<C-W>" */
+ case '<': extra = trans_special(&p, name, TRUE);
+ if (extra != 0) {
+ name += extra;
+ break;
+ }
+ /* FALLTHROUGH */
+
+ default: MB_COPY_CHAR(p, name);
+ break;
+ }
+ } else
+ MB_COPY_CHAR(p, name);
+
+ }
+ *name = NUL;
+ *arg = p + 1;
+
+ return OK;
+}
+
+/*
+ * Allocate a variable for a 'str''ing' constant.
+ * Return OK or FAIL.
+ */
+static int get_lit_string_tv(char_u **arg, typval_T *rettv, int evaluate)
+{
+ char_u *p;
+ char_u *str;
+ int reduce = 0;
+
+ /*
+ * Find the end of the string, skipping ''.
+ */
+ for (p = *arg + 1; *p != NUL; mb_ptr_adv(p)) {
+ if (*p == '\'') {
+ if (p[1] != '\'')
+ break;
+ ++reduce;
+ ++p;
+ }
+ }
+
+ if (*p != '\'') {
+ EMSG2(_("E115: Missing quote: %s"), *arg);
+ return FAIL;
+ }
+
+ /* If only parsing return after setting "*arg" */
+ if (!evaluate) {
+ *arg = p + 1;
+ return OK;
+ }
+
+ /*
+ * Copy the string into allocated memory, handling '' to ' reduction.
+ */
+ str = alloc((unsigned)((p - *arg) - reduce));
+ if (str == NULL)
+ return FAIL;
+ rettv->v_type = VAR_STRING;
+ rettv->vval.v_string = str;
+
+ for (p = *arg + 1; *p != NUL; ) {
+ if (*p == '\'') {
+ if (p[1] != '\'')
+ break;
+ ++p;
+ }
+ MB_COPY_CHAR(p, str);
+ }
+ *str = NUL;
+ *arg = p + 1;
+
+ return OK;
+}
+
+/*
+ * Allocate a variable for a List and fill it from "*arg".
+ * Return OK or FAIL.
+ */
+static int get_list_tv(char_u **arg, typval_T *rettv, int evaluate)
+{
+ list_T *l = NULL;
+ typval_T tv;
+ listitem_T *item;
+
+ if (evaluate) {
+ l = list_alloc();
+ if (l == NULL)
+ return FAIL;
+ }
+
+ *arg = skipwhite(*arg + 1);
+ while (**arg != ']' && **arg != NUL) {
+ if (eval1(arg, &tv, evaluate) == FAIL) /* recursive! */
+ goto failret;
+ if (evaluate) {
+ item = listitem_alloc();
+ if (item != NULL) {
+ item->li_tv = tv;
+ item->li_tv.v_lock = 0;
+ list_append(l, item);
+ } else
+ clear_tv(&tv);
+ }
+
+ if (**arg == ']')
+ break;
+ if (**arg != ',') {
+ EMSG2(_("E696: Missing comma in List: %s"), *arg);
+ goto failret;
+ }
+ *arg = skipwhite(*arg + 1);
+ }
+
+ if (**arg != ']') {
+ EMSG2(_("E697: Missing end of List ']': %s"), *arg);
+failret:
+ if (evaluate)
+ list_free(l, TRUE);
+ return FAIL;
+ }
+
+ *arg = skipwhite(*arg + 1);
+ if (evaluate) {
+ rettv->v_type = VAR_LIST;
+ rettv->vval.v_list = l;
+ ++l->lv_refcount;
+ }
+
+ return OK;
+}
+
+/*
+ * Allocate an empty header for a list.
+ * Caller should take care of the reference count.
+ */
+list_T *list_alloc(void)
+{
+ list_T *list = xcalloc(1, sizeof(list_T));
+
+ /* Prepend the list to the list of lists for garbage collection. */
+ if (first_list != NULL)
+ first_list->lv_used_prev = list;
+ list->lv_used_prev = NULL;
+ list->lv_used_next = first_list;
+ first_list = list;
+ return list;
+}
+
+/*
+ * Allocate an empty list for a return value.
+ */
+static void rettv_list_alloc(typval_T *rettv)
+{
+ list_T *l = list_alloc();
+ rettv->vval.v_list = l;
+ rettv->v_type = VAR_LIST;
+ ++l->lv_refcount;
+}
+
+/*
+ * Unreference a list: decrement the reference count and free it when it
+ * becomes zero.
+ */
+void list_unref(list_T *l)
+{
+ if (l != NULL && --l->lv_refcount <= 0)
+ list_free(l, TRUE);
+}
+
+/*
+ * Free a list, including all items it points to.
+ * Ignores the reference count.
+ */
+void
+list_free (
+ list_T *l,
+ int recurse /* Free Lists and Dictionaries recursively. */
+)
+{
+ listitem_T *item;
+
+ /* Remove the list from the list of lists for garbage collection. */
+ if (l->lv_used_prev == NULL)
+ first_list = l->lv_used_next;
+ else
+ l->lv_used_prev->lv_used_next = l->lv_used_next;
+ if (l->lv_used_next != NULL)
+ l->lv_used_next->lv_used_prev = l->lv_used_prev;
+
+ for (item = l->lv_first; item != NULL; item = l->lv_first) {
+ /* Remove the item before deleting it. */
+ l->lv_first = item->li_next;
+ if (recurse || (item->li_tv.v_type != VAR_LIST
+ && item->li_tv.v_type != VAR_DICT))
+ clear_tv(&item->li_tv);
+ free(item);
+ }
+ free(l);
+}
+
+/*
+ * Allocate a list item.
+ */
+listitem_T *listitem_alloc(void)
+{
+ return (listitem_T *)alloc(sizeof(listitem_T));
+}
+
+/*
+ * Free a list item. Also clears the value. Does not notify watchers.
+ */
+void listitem_free(listitem_T *item)
+{
+ clear_tv(&item->li_tv);
+ free(item);
+}
+
+/*
+ * Remove a list item from a List and free it. Also clears the value.
+ */
+void listitem_remove(list_T *l, listitem_T *item)
+{
+ list_remove(l, item, item);
+ listitem_free(item);
+}
+
+/*
+ * Get the number of items in a list.
+ */
+static long list_len(list_T *l)
+{
+ if (l == NULL)
+ return 0L;
+ return l->lv_len;
+}
+
+/*
+ * Return TRUE when two lists have exactly the same values.
+ */
+static int
+list_equal (
+ list_T *l1,
+ list_T *l2,
+ int ic, /* ignore case for strings */
+ int recursive /* TRUE when used recursively */
+)
+{
+ listitem_T *item1, *item2;
+
+ if (l1 == NULL || l2 == NULL)
+ return FALSE;
+ if (l1 == l2)
+ return TRUE;
+ if (list_len(l1) != list_len(l2))
+ return FALSE;
+
+ for (item1 = l1->lv_first, item2 = l2->lv_first;
+ item1 != NULL && item2 != NULL;
+ item1 = item1->li_next, item2 = item2->li_next)
+ if (!tv_equal(&item1->li_tv, &item2->li_tv, ic, recursive))
+ return FALSE;
+ return item1 == NULL && item2 == NULL;
+}
+
+#if defined(PROTO)
+/*
+ * Return the dictitem that an entry in a hashtable points to.
+ */
+dictitem_T *dict_lookup(hashitem_T *hi)
+{
+ return HI2DI(hi);
+}
+#endif
+
+dictitem_T * dict_lookup(hashitem_T *hi)
+{
+ return HI2DI(hi);
+}
+
+/*
+ * Return TRUE when two dictionaries have exactly the same key/values.
+ */
+static int
+dict_equal (
+ dict_T *d1,
+ dict_T *d2,
+ int ic, /* ignore case for strings */
+ int recursive /* TRUE when used recursively */
+)
+{
+ hashitem_T *hi;
+ dictitem_T *item2;
+ int todo;
+
+ if (d1 == NULL || d2 == NULL)
+ return FALSE;
+ if (d1 == d2)
+ return TRUE;
+ if (dict_len(d1) != dict_len(d2))
+ return FALSE;
+
+ todo = (int)d1->dv_hashtab.ht_used;
+ for (hi = d1->dv_hashtab.ht_array; todo > 0; ++hi) {
+ if (!HASHITEM_EMPTY(hi)) {
+ item2 = dict_find(d2, hi->hi_key, -1);
+ if (item2 == NULL)
+ return FALSE;
+ if (!tv_equal(&HI2DI(hi)->di_tv, &item2->di_tv, ic, recursive))
+ return FALSE;
+ --todo;
+ }
+ }
+ return TRUE;
+}
+
+static int tv_equal_recurse_limit;
+
+/*
+ * Return TRUE if "tv1" and "tv2" have the same value.
+ * Compares the items just like "==" would compare them, but strings and
+ * numbers are different. Floats and numbers are also different.
+ */
+static int
+tv_equal (
+ typval_T *tv1,
+ typval_T *tv2,
+ int ic, /* ignore case */
+ int recursive /* TRUE when used recursively */
+)
+{
+ char_u buf1[NUMBUFLEN], buf2[NUMBUFLEN];
+ char_u *s1, *s2;
+ static int recursive_cnt = 0; /* catch recursive loops */
+ int r;
+
+ if (tv1->v_type != tv2->v_type)
+ return FALSE;
+
+ /* Catch lists and dicts that have an endless loop by limiting
+ * recursiveness to a limit. We guess they are equal then.
+ * A fixed limit has the problem of still taking an awful long time.
+ * Reduce the limit every time running into it. That should work fine for
+ * deeply linked structures that are not recursively linked and catch
+ * recursiveness quickly. */
+ if (!recursive)
+ tv_equal_recurse_limit = 1000;
+ if (recursive_cnt >= tv_equal_recurse_limit) {
+ --tv_equal_recurse_limit;
+ return TRUE;
+ }
+
+ switch (tv1->v_type) {
+ case VAR_LIST:
+ ++recursive_cnt;
+ r = list_equal(tv1->vval.v_list, tv2->vval.v_list, ic, TRUE);
+ --recursive_cnt;
+ return r;
+
+ case VAR_DICT:
+ ++recursive_cnt;
+ r = dict_equal(tv1->vval.v_dict, tv2->vval.v_dict, ic, TRUE);
+ --recursive_cnt;
+ return r;
+
+ case VAR_FUNC:
+ return tv1->vval.v_string != NULL
+ && tv2->vval.v_string != NULL
+ && STRCMP(tv1->vval.v_string, tv2->vval.v_string) == 0;
+
+ case VAR_NUMBER:
+ return tv1->vval.v_number == tv2->vval.v_number;
+
+ case VAR_FLOAT:
+ return tv1->vval.v_float == tv2->vval.v_float;
+
+ case VAR_STRING:
+ s1 = get_tv_string_buf(tv1, buf1);
+ s2 = get_tv_string_buf(tv2, buf2);
+ return (ic ? MB_STRICMP(s1, s2) : STRCMP(s1, s2)) == 0;
+ }
+
+ EMSG2(_(e_intern2), "tv_equal()");
+ return TRUE;
+}
+
+/*
+ * Locate item with index "n" in list "l" and return it.
+ * A negative index is counted from the end; -1 is the last item.
+ * Returns NULL when "n" is out of range.
+ */
+listitem_T *list_find(list_T *l, long n)
+{
+ listitem_T *item;
+ long idx;
+
+ if (l == NULL)
+ return NULL;
+
+ /* Negative index is relative to the end. */
+ if (n < 0)
+ n = l->lv_len + n;
+
+ /* Check for index out of range. */
+ if (n < 0 || n >= l->lv_len)
+ return NULL;
+
+ /* When there is a cached index may start search from there. */
+ if (l->lv_idx_item != NULL) {
+ if (n < l->lv_idx / 2) {
+ /* closest to the start of the list */
+ item = l->lv_first;
+ idx = 0;
+ } else if (n > (l->lv_idx + l->lv_len) / 2) {
+ /* closest to the end of the list */
+ item = l->lv_last;
+ idx = l->lv_len - 1;
+ } else {
+ /* closest to the cached index */
+ item = l->lv_idx_item;
+ idx = l->lv_idx;
+ }
+ } else {
+ if (n < l->lv_len / 2) {
+ /* closest to the start of the list */
+ item = l->lv_first;
+ idx = 0;
+ } else {
+ /* closest to the end of the list */
+ item = l->lv_last;
+ idx = l->lv_len - 1;
+ }
+ }
+
+ while (n > idx) {
+ /* search forward */
+ item = item->li_next;
+ ++idx;
+ }
+ while (n < idx) {
+ /* search backward */
+ item = item->li_prev;
+ --idx;
+ }
+
+ /* cache the used index */
+ l->lv_idx = idx;
+ l->lv_idx_item = item;
+
+ return item;
+}
+
+/*
+ * Get list item "l[idx]" as a number.
+ */
+static long
+list_find_nr (
+ list_T *l,
+ long idx,
+ int *errorp /* set to TRUE when something wrong */
+)
+{
+ listitem_T *li;
+
+ li = list_find(l, idx);
+ if (li == NULL) {
+ if (errorp != NULL)
+ *errorp = TRUE;
+ return -1L;
+ }
+ return get_tv_number_chk(&li->li_tv, errorp);
+}
+
+/*
+ * Get list item "l[idx - 1]" as a string. Returns NULL for failure.
+ */
+char_u *list_find_str(list_T *l, long idx)
+{
+ listitem_T *li;
+
+ li = list_find(l, idx - 1);
+ if (li == NULL) {
+ EMSGN(_(e_listidx), idx);
+ return NULL;
+ }
+ return get_tv_string(&li->li_tv);
+}
+
+/*
+ * Locate "item" list "l" and return its index.
+ * Returns -1 when "item" is not in the list.
+ */
+static long list_idx_of_item(list_T *l, listitem_T *item)
+{
+ long idx = 0;
+ listitem_T *li;
+
+ if (l == NULL)
+ return -1;
+ idx = 0;
+ for (li = l->lv_first; li != NULL && li != item; li = li->li_next)
+ ++idx;
+ if (li == NULL)
+ return -1;
+ return idx;
+}
+
+/*
+ * Append item "item" to the end of list "l".
+ */
+void list_append(list_T *l, listitem_T *item)
+{
+ if (l->lv_last == NULL) {
+ /* empty list */
+ l->lv_first = item;
+ l->lv_last = item;
+ item->li_prev = NULL;
+ } else {
+ l->lv_last->li_next = item;
+ item->li_prev = l->lv_last;
+ l->lv_last = item;
+ }
+ ++l->lv_len;
+ item->li_next = NULL;
+}
+
+/*
+ * Append typval_T "tv" to the end of list "l".
+ */
+void list_append_tv(list_T *l, typval_T *tv)
+{
+ listitem_T *li = listitem_alloc();
+ copy_tv(tv, &li->li_tv);
+ list_append(l, li);
+}
+
+/*
+ * Add a dictionary to a list. Used by getqflist().
+ */
+void list_append_dict(list_T *list, dict_T *dict)
+{
+ listitem_T *li = listitem_alloc();
+
+ li->li_tv.v_type = VAR_DICT;
+ li->li_tv.v_lock = 0;
+ li->li_tv.vval.v_dict = dict;
+ list_append(list, li);
+ ++dict->dv_refcount;
+}
+
+/*
+ * Make a copy of "str" and append it as an item to list "l".
+ * When "len" >= 0 use "str[len]".
+ */
+void list_append_string(list_T *l, char_u *str, int len)
+{
+ listitem_T *li = listitem_alloc();
+
+ list_append(l, li);
+ li->li_tv.v_type = VAR_STRING;
+ li->li_tv.v_lock = 0;
+
+ if (str == NULL) {
+ li->li_tv.vval.v_string = NULL;
+ } else {
+ li->li_tv.vval.v_string = (len >= 0) ? vim_strnsave(str, len)
+ : vim_strsave(str);
+ }
+}
+
+/*
+ * Append "n" to list "l".
+ */
+static void list_append_number(list_T *l, varnumber_T n)
+{
+ listitem_T *li = listitem_alloc();
+ li->li_tv.v_type = VAR_NUMBER;
+ li->li_tv.v_lock = 0;
+ li->li_tv.vval.v_number = n;
+ list_append(l, li);
+}
+
+/*
+ * Insert typval_T "tv" in list "l" before "item".
+ * If "item" is NULL append at the end.
+ * Return FAIL when out of memory.
+ */
+int list_insert_tv(list_T *l, typval_T *tv, listitem_T *item)
+{
+ listitem_T *ni = listitem_alloc();
+
+ if (ni == NULL)
+ return FAIL;
+ copy_tv(tv, &ni->li_tv);
+ list_insert(l, ni, item);
+ return OK;
+}
+
+void list_insert(list_T *l, listitem_T *ni, listitem_T *item)
+{
+ if (item == NULL)
+ /* Append new item at end of list. */
+ list_append(l, ni);
+ else {
+ /* Insert new item before existing item. */
+ ni->li_prev = item->li_prev;
+ ni->li_next = item;
+ if (item->li_prev == NULL) {
+ l->lv_first = ni;
+ ++l->lv_idx;
+ } else {
+ item->li_prev->li_next = ni;
+ l->lv_idx_item = NULL;
+ }
+ item->li_prev = ni;
+ ++l->lv_len;
+ }
+}
+
+/*
+ * Extend "l1" with "l2".
+ * If "bef" is NULL append at the end, otherwise insert before this item.
+ * Returns FAIL when out of memory.
+ */
+static int list_extend(list_T *l1, list_T *l2, listitem_T *bef)
+{
+ listitem_T *item;
+ int todo = l2->lv_len;
+
+ /* We also quit the loop when we have inserted the original item count of
+ * the list, avoid a hang when we extend a list with itself. */
+ for (item = l2->lv_first; item != NULL && --todo >= 0; item = item->li_next)
+ if (list_insert_tv(l1, &item->li_tv, bef) == FAIL)
+ return FAIL;
+ return OK;
+}
+
+/*
+ * Concatenate lists "l1" and "l2" into a new list, stored in "tv".
+ * Return FAIL when out of memory.
+ */
+static int list_concat(list_T *l1, list_T *l2, typval_T *tv)
+{
+ list_T *l;
+
+ if (l1 == NULL || l2 == NULL)
+ return FAIL;
+
+ /* make a copy of the first list. */
+ l = list_copy(l1, FALSE, 0);
+ if (l == NULL)
+ return FAIL;
+ tv->v_type = VAR_LIST;
+ tv->vval.v_list = l;
+
+ /* append all items from the second list */
+ return list_extend(l, l2, NULL);
+}
+
+/*
+ * Make a copy of list "orig". Shallow if "deep" is FALSE.
+ * The refcount of the new list is set to 1.
+ * See item_copy() for "copyID".
+ * Returns NULL when out of memory.
+ */
+static list_T *list_copy(list_T *orig, int deep, int copyID)
+{
+ list_T *copy;
+ listitem_T *item;
+ listitem_T *ni;
+
+ if (orig == NULL)
+ return NULL;
+
+ copy = list_alloc();
+ if (copy != NULL) {
+ if (copyID != 0) {
+ /* Do this before adding the items, because one of the items may
+ * refer back to this list. */
+ orig->lv_copyID = copyID;
+ orig->lv_copylist = copy;
+ }
+ for (item = orig->lv_first; item != NULL && !got_int;
+ item = item->li_next) {
+ ni = listitem_alloc();
+ if (ni == NULL)
+ break;
+ if (deep) {
+ if (item_copy(&item->li_tv, &ni->li_tv, deep, copyID) == FAIL) {
+ free(ni);
+ break;
+ }
+ } else
+ copy_tv(&item->li_tv, &ni->li_tv);
+ list_append(copy, ni);
+ }
+ ++copy->lv_refcount;
+ if (item != NULL) {
+ list_unref(copy);
+ copy = NULL;
+ }
+ }
+
+ return copy;
+}
+
+/*
+ * Remove items "item" to "item2" from list "l".
+ * Does not free the listitem or the value!
+ */
+void list_remove(list_T *l, listitem_T *item, listitem_T *item2)
+{
+ listitem_T *ip;
+
+ /* notify watchers */
+ for (ip = item; ip != NULL; ip = ip->li_next) {
+ --l->lv_len;
+ list_fix_watch(l, ip);
+ if (ip == item2)
+ break;
+ }
+
+ if (item2->li_next == NULL)
+ l->lv_last = item->li_prev;
+ else
+ item2->li_next->li_prev = item->li_prev;
+ if (item->li_prev == NULL)
+ l->lv_first = item2->li_next;
+ else
+ item->li_prev->li_next = item2->li_next;
+ l->lv_idx_item = NULL;
+}
+
+/*
+ * Return an allocated string with the string representation of a list.
+ * May return NULL.
+ */
+static char_u *list2string(typval_T *tv, int copyID)
+{
+ garray_T ga;
+
+ if (tv->vval.v_list == NULL)
+ return NULL;
+ ga_init(&ga, (int)sizeof(char), 80);
+ ga_append(&ga, '[');
+ if (list_join(&ga, tv->vval.v_list, (char_u *)", ", FALSE, copyID) == FAIL) {
+ free(ga.ga_data);
+ return NULL;
+ }
+ ga_append(&ga, ']');
+ ga_append(&ga, NUL);
+ return (char_u *)ga.ga_data;
+}
+
+typedef struct join_S {
+ char_u *s;
+ char_u *tofree;
+} join_T;
+
+static int
+list_join_inner (
+ garray_T *gap, /* to store the result in */
+ list_T *l,
+ char_u *sep,
+ int echo_style,
+ int copyID,
+ garray_T *join_gap /* to keep each list item string */
+)
+{
+ int i;
+ join_T *p;
+ int len;
+ int sumlen = 0;
+ int first = TRUE;
+ char_u *tofree;
+ char_u numbuf[NUMBUFLEN];
+ listitem_T *item;
+ char_u *s;
+
+ /* Stringify each item in the list. */
+ for (item = l->lv_first; item != NULL && !got_int; item = item->li_next) {
+ if (echo_style)
+ s = echo_string(&item->li_tv, &tofree, numbuf, copyID);
+ else
+ s = tv2string(&item->li_tv, &tofree, numbuf, copyID);
+ if (s == NULL)
+ return FAIL;
+
+ len = (int)STRLEN(s);
+ sumlen += len;
+
+ ga_grow(join_gap, 1);
+ p = ((join_T *)join_gap->ga_data) + (join_gap->ga_len++);
+ if (tofree != NULL || s != numbuf) {
+ p->s = s;
+ p->tofree = tofree;
+ } else {
+ p->s = vim_strnsave(s, len);
+ p->tofree = p->s;
+ }
+
+ line_breakcheck();
+ }
+
+ /* Allocate result buffer with its total size, avoid re-allocation and
+ * multiple copy operations. Add 2 for a tailing ']' and NUL. */
+ if (join_gap->ga_len >= 2)
+ sumlen += (int)STRLEN(sep) * (join_gap->ga_len - 1);
+ ga_grow(gap, sumlen + 2);
+
+ for (i = 0; i < join_gap->ga_len && !got_int; ++i) {
+ if (first)
+ first = FALSE;
+ else
+ ga_concat(gap, sep);
+ p = ((join_T *)join_gap->ga_data) + i;
+
+ if (p->s != NULL)
+ ga_concat(gap, p->s);
+ line_breakcheck();
+ }
+
+ return OK;
+}
+
+/*
+ * Join list "l" into a string in "*gap", using separator "sep".
+ * When "echo_style" is TRUE use String as echoed, otherwise as inside a List.
+ * Return FAIL or OK.
+ */
+static int list_join(garray_T *gap, list_T *l, char_u *sep, int echo_style, int copyID)
+{
+ garray_T join_ga;
+ int retval;
+ join_T *p;
+ int i;
+
+ ga_init(&join_ga, (int)sizeof(join_T), l->lv_len);
+ retval = list_join_inner(gap, l, sep, echo_style, copyID, &join_ga);
+
+ /* Dispose each item in join_ga. */
+ if (join_ga.ga_data != NULL) {
+ p = (join_T *)join_ga.ga_data;
+ for (i = 0; i < join_ga.ga_len; ++i) {
+ free(p->tofree);
+ ++p;
+ }
+ ga_clear(&join_ga);
+ }
+
+ return retval;
+}
+
+/*
+ * Garbage collection for lists and dictionaries.
+ *
+ * We use reference counts to be able to free most items right away when they
+ * are no longer used. But for composite items it's possible that it becomes
+ * unused while the reference count is > 0: When there is a recursive
+ * reference. Example:
+ * :let l = [1, 2, 3]
+ * :let d = {9: l}
+ * :let l[1] = d
+ *
+ * Since this is quite unusual we handle this with garbage collection: every
+ * once in a while find out which lists and dicts are not referenced from any
+ * variable.
+ *
+ * Here is a good reference text about garbage collection (refers to Python
+ * but it applies to all reference-counting mechanisms):
+ * http://python.ca/nas/python/gc/
+ */
+
+/*
+ * Do garbage collection for lists and dicts.
+ * Return TRUE if some memory was freed.
+ */
+int garbage_collect(void)
+{
+ int copyID;
+ buf_T *buf;
+ win_T *wp;
+ int i;
+ funccall_T *fc, **pfc;
+ int did_free;
+ int did_free_funccal = FALSE;
+ tabpage_T *tp;
+
+ /* Only do this once. */
+ want_garbage_collect = FALSE;
+ may_garbage_collect = FALSE;
+ garbage_collect_at_exit = FALSE;
+
+ /* We advance by two because we add one for items referenced through
+ * previous_funccal. */
+ current_copyID += COPYID_INC;
+ copyID = current_copyID;
+
+ /*
+ * 1. Go through all accessible variables and mark all lists and dicts
+ * with copyID.
+ */
+
+ /* Don't free variables in the previous_funccal list unless they are only
+ * referenced through previous_funccal. This must be first, because if
+ * the item is referenced elsewhere the funccal must not be freed. */
+ for (fc = previous_funccal; fc != NULL; fc = fc->caller) {
+ set_ref_in_ht(&fc->l_vars.dv_hashtab, copyID + 1);
+ set_ref_in_ht(&fc->l_avars.dv_hashtab, copyID + 1);
+ }
+
+ /* script-local variables */
+ for (i = 1; i <= ga_scripts.ga_len; ++i)
+ set_ref_in_ht(&SCRIPT_VARS(i), copyID);
+
+ /* buffer-local variables */
+ for (buf = firstbuf; buf != NULL; buf = buf->b_next)
+ set_ref_in_item(&buf->b_bufvar.di_tv, copyID);
+
+ /* window-local variables */
+ FOR_ALL_TAB_WINDOWS(tp, wp)
+ set_ref_in_item(&wp->w_winvar.di_tv, copyID);
+ if (aucmd_win != NULL)
+ set_ref_in_item(&aucmd_win->w_winvar.di_tv, copyID);
+
+ /* tabpage-local variables */
+ for (tp = first_tabpage; tp != NULL; tp = tp->tp_next)
+ set_ref_in_item(&tp->tp_winvar.di_tv, copyID);
+
+ /* global variables */
+ set_ref_in_ht(&globvarht, copyID);
+
+ /* function-local variables */
+ for (fc = current_funccal; fc != NULL; fc = fc->caller) {
+ set_ref_in_ht(&fc->l_vars.dv_hashtab, copyID);
+ set_ref_in_ht(&fc->l_avars.dv_hashtab, copyID);
+ }
+
+ /* v: vars */
+ set_ref_in_ht(&vimvarht, copyID);
+
+
+
+
+ /*
+ * 2. Free lists and dictionaries that are not referenced.
+ */
+ did_free = free_unref_items(copyID);
+
+ /*
+ * 3. Check if any funccal can be freed now.
+ */
+ for (pfc = &previous_funccal; *pfc != NULL; ) {
+ if (can_free_funccal(*pfc, copyID)) {
+ fc = *pfc;
+ *pfc = fc->caller;
+ free_funccal(fc, TRUE);
+ did_free = TRUE;
+ did_free_funccal = TRUE;
+ } else
+ pfc = &(*pfc)->caller;
+ }
+ if (did_free_funccal)
+ /* When a funccal was freed some more items might be garbage
+ * collected, so run again. */
+ (void)garbage_collect();
+
+ return did_free;
+}
+
+/*
+ * Free lists and dictionaries that are no longer referenced.
+ */
+static int free_unref_items(int copyID)
+{
+ dict_T *dd;
+ list_T *ll;
+ int did_free = FALSE;
+
+ /*
+ * Go through the list of dicts and free items without the copyID.
+ */
+ for (dd = first_dict; dd != NULL; )
+ if ((dd->dv_copyID & COPYID_MASK) != (copyID & COPYID_MASK)) {
+ /* Free the Dictionary and ordinary items it contains, but don't
+ * recurse into Lists and Dictionaries, they will be in the list
+ * of dicts or list of lists. */
+ dict_free(dd, FALSE);
+ did_free = TRUE;
+
+ /* restart, next dict may also have been freed */
+ dd = first_dict;
+ } else
+ dd = dd->dv_used_next;
+
+ /*
+ * Go through the list of lists and free items without the copyID.
+ * But don't free a list that has a watcher (used in a for loop), these
+ * are not referenced anywhere.
+ */
+ for (ll = first_list; ll != NULL; )
+ if ((ll->lv_copyID & COPYID_MASK) != (copyID & COPYID_MASK)
+ && ll->lv_watch == NULL) {
+ /* Free the List and ordinary items it contains, but don't recurse
+ * into Lists and Dictionaries, they will be in the list of dicts
+ * or list of lists. */
+ list_free(ll, FALSE);
+ did_free = TRUE;
+
+ /* restart, next list may also have been freed */
+ ll = first_list;
+ } else
+ ll = ll->lv_used_next;
+
+ return did_free;
+}
+
+/*
+ * Mark all lists and dicts referenced through hashtab "ht" with "copyID".
+ */
+void set_ref_in_ht(hashtab_T *ht, int copyID)
+{
+ int todo;
+ hashitem_T *hi;
+
+ todo = (int)ht->ht_used;
+ for (hi = ht->ht_array; todo > 0; ++hi)
+ if (!HASHITEM_EMPTY(hi)) {
+ --todo;
+ set_ref_in_item(&HI2DI(hi)->di_tv, copyID);
+ }
+}
+
+/*
+ * Mark all lists and dicts referenced through list "l" with "copyID".
+ */
+void set_ref_in_list(list_T *l, int copyID)
+{
+ listitem_T *li;
+
+ for (li = l->lv_first; li != NULL; li = li->li_next)
+ set_ref_in_item(&li->li_tv, copyID);
+}
+
+/*
+ * Mark all lists and dicts referenced through typval "tv" with "copyID".
+ */
+void set_ref_in_item(typval_T *tv, int copyID)
+{
+ dict_T *dd;
+ list_T *ll;
+
+ switch (tv->v_type) {
+ case VAR_DICT:
+ dd = tv->vval.v_dict;
+ if (dd != NULL && dd->dv_copyID != copyID) {
+ /* Didn't see this dict yet. */
+ dd->dv_copyID = copyID;
+ set_ref_in_ht(&dd->dv_hashtab, copyID);
+ }
+ break;
+
+ case VAR_LIST:
+ ll = tv->vval.v_list;
+ if (ll != NULL && ll->lv_copyID != copyID) {
+ /* Didn't see this list yet. */
+ ll->lv_copyID = copyID;
+ set_ref_in_list(ll, copyID);
+ }
+ break;
+ }
+ return;
+}
+
+/*
+ * Allocate an empty header for a dictionary.
+ */
+dict_T *dict_alloc(void)
+{
+ dict_T *d = xmalloc(sizeof(dict_T));
+
+ /* Add the dict to the list of dicts for garbage collection. */
+ if (first_dict != NULL)
+ first_dict->dv_used_prev = d;
+ d->dv_used_next = first_dict;
+ d->dv_used_prev = NULL;
+ first_dict = d;
+
+ hash_init(&d->dv_hashtab);
+ d->dv_lock = 0;
+ d->dv_scope = 0;
+ d->dv_refcount = 0;
+ d->dv_copyID = 0;
+
+ return d;
+}
+
+/*
+ * Allocate an empty dict for a return value.
+ * Returns OK or FAIL.
+ */
+static int rettv_dict_alloc(typval_T *rettv)
+{
+ dict_T *d = dict_alloc();
+
+ if (d == NULL)
+ return FAIL;
+
+ rettv->vval.v_dict = d;
+ rettv->v_type = VAR_DICT;
+ ++d->dv_refcount;
+ return OK;
+}
+
+
+/*
+ * Unreference a Dictionary: decrement the reference count and free it when it
+ * becomes zero.
+ */
+void dict_unref(dict_T *d)
+{
+ if (d != NULL && --d->dv_refcount <= 0)
+ dict_free(d, TRUE);
+}
+
+/*
+ * Free a Dictionary, including all items it contains.
+ * Ignores the reference count.
+ */
+void
+dict_free (
+ dict_T *d,
+ int recurse /* Free Lists and Dictionaries recursively. */
+)
+{
+ int todo;
+ hashitem_T *hi;
+ dictitem_T *di;
+
+ /* Remove the dict from the list of dicts for garbage collection. */
+ if (d->dv_used_prev == NULL)
+ first_dict = d->dv_used_next;
+ else
+ d->dv_used_prev->dv_used_next = d->dv_used_next;
+ if (d->dv_used_next != NULL)
+ d->dv_used_next->dv_used_prev = d->dv_used_prev;
+
+ /* Lock the hashtab, we don't want it to resize while freeing items. */
+ hash_lock(&d->dv_hashtab);
+ todo = (int)d->dv_hashtab.ht_used;
+ for (hi = d->dv_hashtab.ht_array; todo > 0; ++hi) {
+ if (!HASHITEM_EMPTY(hi)) {
+ /* Remove the item before deleting it, just in case there is
+ * something recursive causing trouble. */
+ di = HI2DI(hi);
+ hash_remove(&d->dv_hashtab, hi);
+ if (recurse || (di->di_tv.v_type != VAR_LIST
+ && di->di_tv.v_type != VAR_DICT))
+ clear_tv(&di->di_tv);
+ free(di);
+ --todo;
+ }
+ }
+ hash_clear(&d->dv_hashtab);
+ free(d);
+}
+
+/*
+ * Allocate a Dictionary item.
+ * The "key" is copied to the new item.
+ * Note that the value of the item "di_tv" still needs to be initialized!
+ * Returns NULL when out of memory.
+ */
+dictitem_T *dictitem_alloc(char_u *key)
+{
+ dictitem_T *di;
+
+ di = (dictitem_T *)alloc((unsigned)(sizeof(dictitem_T) + STRLEN(key)));
+ if (di != NULL) {
+ STRCPY(di->di_key, key);
+ di->di_flags = 0;
+ }
+ return di;
+}
+
+/*
+ * Make a copy of a Dictionary item.
+ */
+static dictitem_T *dictitem_copy(dictitem_T *org)
+{
+ dictitem_T *di;
+
+ di = (dictitem_T *)alloc((unsigned)(sizeof(dictitem_T)
+ + STRLEN(org->di_key)));
+ if (di != NULL) {
+ STRCPY(di->di_key, org->di_key);
+ di->di_flags = 0;
+ copy_tv(&org->di_tv, &di->di_tv);
+ }
+ return di;
+}
+
+/*
+ * Remove item "item" from Dictionary "dict" and free it.
+ */
+static void dictitem_remove(dict_T *dict, dictitem_T *item)
+{
+ hashitem_T *hi;
+
+ hi = hash_find(&dict->dv_hashtab, item->di_key);
+ if (HASHITEM_EMPTY(hi))
+ EMSG2(_(e_intern2), "dictitem_remove()");
+ else
+ hash_remove(&dict->dv_hashtab, hi);
+ dictitem_free(item);
+}
+
+/*
+ * Free a dict item. Also clears the value.
+ */
+void dictitem_free(dictitem_T *item)
+{
+ clear_tv(&item->di_tv);
+ free(item);
+}
+
+/*
+ * Make a copy of dict "d". Shallow if "deep" is FALSE.
+ * The refcount of the new dict is set to 1.
+ * See item_copy() for "copyID".
+ * Returns NULL when out of memory.
+ */
+static dict_T *dict_copy(dict_T *orig, int deep, int copyID)
+{
+ dict_T *copy;
+ dictitem_T *di;
+ int todo;
+ hashitem_T *hi;
+
+ if (orig == NULL)
+ return NULL;
+
+ copy = dict_alloc();
+ if (copy != NULL) {
+ if (copyID != 0) {
+ orig->dv_copyID = copyID;
+ orig->dv_copydict = copy;
+ }
+ todo = (int)orig->dv_hashtab.ht_used;
+ for (hi = orig->dv_hashtab.ht_array; todo > 0 && !got_int; ++hi) {
+ if (!HASHITEM_EMPTY(hi)) {
+ --todo;
+
+ di = dictitem_alloc(hi->hi_key);
+ if (di == NULL)
+ break;
+ if (deep) {
+ if (item_copy(&HI2DI(hi)->di_tv, &di->di_tv, deep,
+ copyID) == FAIL) {
+ free(di);
+ break;
+ }
+ } else
+ copy_tv(&HI2DI(hi)->di_tv, &di->di_tv);
+ if (dict_add(copy, di) == FAIL) {
+ dictitem_free(di);
+ break;
+ }
+ }
+ }
+
+ ++copy->dv_refcount;
+ if (todo > 0) {
+ dict_unref(copy);
+ copy = NULL;
+ }
+ }
+
+ return copy;
+}
+
+/*
+ * Add item "item" to Dictionary "d".
+ * Returns FAIL when out of memory and when key already exists.
+ */
+int dict_add(dict_T *d, dictitem_T *item)
+{
+ return hash_add(&d->dv_hashtab, item->di_key);
+}
+
+/*
+ * Add a number or string entry to dictionary "d".
+ * When "str" is NULL use number "nr", otherwise use "str".
+ * Returns FAIL when out of memory and when key already exists.
+ */
+int dict_add_nr_str(dict_T *d, char *key, long nr, char_u *str)
+{
+ dictitem_T *item;
+
+ item = dictitem_alloc((char_u *)key);
+ if (item == NULL)
+ return FAIL;
+ item->di_tv.v_lock = 0;
+ if (str == NULL) {
+ item->di_tv.v_type = VAR_NUMBER;
+ item->di_tv.vval.v_number = nr;
+ } else {
+ item->di_tv.v_type = VAR_STRING;
+ item->di_tv.vval.v_string = vim_strsave(str);
+ }
+ if (dict_add(d, item) == FAIL) {
+ dictitem_free(item);
+ return FAIL;
+ }
+ return OK;
+}
+
+/*
+ * Add a list entry to dictionary "d".
+ * Returns FAIL when out of memory and when key already exists.
+ */
+int dict_add_list(dict_T *d, char *key, list_T *list)
+{
+ dictitem_T *item;
+
+ item = dictitem_alloc((char_u *)key);
+ if (item == NULL)
+ return FAIL;
+ item->di_tv.v_lock = 0;
+ item->di_tv.v_type = VAR_LIST;
+ item->di_tv.vval.v_list = list;
+ if (dict_add(d, item) == FAIL) {
+ dictitem_free(item);
+ return FAIL;
+ }
+ ++list->lv_refcount;
+ return OK;
+}
+
+/*
+ * Get the number of items in a Dictionary.
+ */
+static long dict_len(dict_T *d)
+{
+ if (d == NULL)
+ return 0L;
+ return (long)d->dv_hashtab.ht_used;
+}
+
+/*
+ * Find item "key[len]" in Dictionary "d".
+ * If "len" is negative use strlen(key).
+ * Returns NULL when not found.
+ */
+dictitem_T *dict_find(dict_T *d, char_u *key, int len)
+{
+#define AKEYLEN 200
+ char_u buf[AKEYLEN];
+ char_u *akey;
+ char_u *tofree = NULL;
+ hashitem_T *hi;
+
+ if (len < 0)
+ akey = key;
+ else if (len >= AKEYLEN) {
+ tofree = akey = vim_strnsave(key, len);
+ if (akey == NULL)
+ return NULL;
+ } else {
+ /* Avoid a malloc/free by using buf[]. */
+ vim_strncpy(buf, key, len);
+ akey = buf;
+ }
+
+ hi = hash_find(&d->dv_hashtab, akey);
+ free(tofree);
+ if (HASHITEM_EMPTY(hi))
+ return NULL;
+ return HI2DI(hi);
+}
+
+/*
+ * Get a string item from a dictionary.
+ * When "save" is TRUE allocate memory for it.
+ * Returns NULL if the entry doesn't exist or out of memory.
+ */
+char_u *get_dict_string(dict_T *d, char_u *key, int save)
+{
+ dictitem_T *di;
+ char_u *s;
+
+ di = dict_find(d, key, -1);
+ if (di == NULL)
+ return NULL;
+ s = get_tv_string(&di->di_tv);
+ if (save && s != NULL)
+ s = vim_strsave(s);
+ return s;
+}
+
+/*
+ * Get a number item from a dictionary.
+ * Returns 0 if the entry doesn't exist or out of memory.
+ */
+long get_dict_number(dict_T *d, char_u *key)
+{
+ dictitem_T *di;
+
+ di = dict_find(d, key, -1);
+ if (di == NULL)
+ return 0;
+ return get_tv_number(&di->di_tv);
+}
+
+/*
+ * Return an allocated string with the string representation of a Dictionary.
+ * May return NULL.
+ */
+static char_u *dict2string(typval_T *tv, int copyID)
+{
+ garray_T ga;
+ int first = TRUE;
+ char_u *tofree;
+ char_u numbuf[NUMBUFLEN];
+ hashitem_T *hi;
+ char_u *s;
+ dict_T *d;
+ int todo;
+
+ if ((d = tv->vval.v_dict) == NULL)
+ return NULL;
+ ga_init(&ga, (int)sizeof(char), 80);
+ ga_append(&ga, '{');
+
+ todo = (int)d->dv_hashtab.ht_used;
+ for (hi = d->dv_hashtab.ht_array; todo > 0 && !got_int; ++hi) {
+ if (!HASHITEM_EMPTY(hi)) {
+ --todo;
+
+ if (first)
+ first = FALSE;
+ else
+ ga_concat(&ga, (char_u *)", ");
+
+ tofree = string_quote(hi->hi_key, FALSE);
+ if (tofree != NULL) {
+ ga_concat(&ga, tofree);
+ free(tofree);
+ }
+ ga_concat(&ga, (char_u *)": ");
+ s = tv2string(&HI2DI(hi)->di_tv, &tofree, numbuf, copyID);
+ if (s != NULL)
+ ga_concat(&ga, s);
+ free(tofree);
+ if (s == NULL)
+ break;
+ }
+ }
+ if (todo > 0) {
+ free(ga.ga_data);
+ return NULL;
+ }
+
+ ga_append(&ga, '}');
+ ga_append(&ga, NUL);
+ return (char_u *)ga.ga_data;
+}
+
+/*
+ * Allocate a variable for a Dictionary and fill it from "*arg".
+ * Return OK or FAIL. Returns NOTDONE for {expr}.
+ */
+static int get_dict_tv(char_u **arg, typval_T *rettv, int evaluate)
+{
+ dict_T *d = NULL;
+ typval_T tvkey;
+ typval_T tv;
+ char_u *key = NULL;
+ dictitem_T *item;
+ char_u *start = skipwhite(*arg + 1);
+ char_u buf[NUMBUFLEN];
+
+ /*
+ * First check if it's not a curly-braces thing: {expr}.
+ * Must do this without evaluating, otherwise a function may be called
+ * twice. Unfortunately this means we need to call eval1() twice for the
+ * first item.
+ * But {} is an empty Dictionary.
+ */
+ if (*start != '}') {
+ if (eval1(&start, &tv, FALSE) == FAIL) /* recursive! */
+ return FAIL;
+ if (*start == '}')
+ return NOTDONE;
+ }
+
+ if (evaluate) {
+ d = dict_alloc();
+ if (d == NULL)
+ return FAIL;
+ }
+ tvkey.v_type = VAR_UNKNOWN;
+ tv.v_type = VAR_UNKNOWN;
+
+ *arg = skipwhite(*arg + 1);
+ while (**arg != '}' && **arg != NUL) {
+ if (eval1(arg, &tvkey, evaluate) == FAIL) /* recursive! */
+ goto failret;
+ if (**arg != ':') {
+ EMSG2(_("E720: Missing colon in Dictionary: %s"), *arg);
+ clear_tv(&tvkey);
+ goto failret;
+ }
+ if (evaluate) {
+ key = get_tv_string_buf_chk(&tvkey, buf);
+ if (key == NULL || *key == NUL) {
+ /* "key" is NULL when get_tv_string_buf_chk() gave an errmsg */
+ if (key != NULL)
+ EMSG(_(e_emptykey));
+ clear_tv(&tvkey);
+ goto failret;
+ }
+ }
+
+ *arg = skipwhite(*arg + 1);
+ if (eval1(arg, &tv, evaluate) == FAIL) { /* recursive! */
+ if (evaluate)
+ clear_tv(&tvkey);
+ goto failret;
+ }
+ if (evaluate) {
+ item = dict_find(d, key, -1);
+ if (item != NULL) {
+ EMSG2(_("E721: Duplicate key in Dictionary: \"%s\""), key);
+ clear_tv(&tvkey);
+ clear_tv(&tv);
+ goto failret;
+ }
+ item = dictitem_alloc(key);
+ clear_tv(&tvkey);
+ if (item != NULL) {
+ item->di_tv = tv;
+ item->di_tv.v_lock = 0;
+ if (dict_add(d, item) == FAIL)
+ dictitem_free(item);
+ }
+ }
+
+ if (**arg == '}')
+ break;
+ if (**arg != ',') {
+ EMSG2(_("E722: Missing comma in Dictionary: %s"), *arg);
+ goto failret;
+ }
+ *arg = skipwhite(*arg + 1);
+ }
+
+ if (**arg != '}') {
+ EMSG2(_("E723: Missing end of Dictionary '}': %s"), *arg);
+failret:
+ if (evaluate)
+ dict_free(d, TRUE);
+ return FAIL;
+ }
+
+ *arg = skipwhite(*arg + 1);
+ if (evaluate) {
+ rettv->v_type = VAR_DICT;
+ rettv->vval.v_dict = d;
+ ++d->dv_refcount;
+ }
+
+ return OK;
+}
+
+/*
+ * Return a string with the string representation of a variable.
+ * If the memory is allocated "tofree" is set to it, otherwise NULL.
+ * "numbuf" is used for a number.
+ * Does not put quotes around strings, as ":echo" displays values.
+ * When "copyID" is not NULL replace recursive lists and dicts with "...".
+ * May return NULL.
+ */
+static char_u *echo_string(typval_T *tv, char_u **tofree, char_u *numbuf, int copyID)
+{
+ static int recurse = 0;
+ char_u *r = NULL;
+
+ if (recurse >= DICT_MAXNEST) {
+ EMSG(_("E724: variable nested too deep for displaying"));
+ *tofree = NULL;
+ return NULL;
+ }
+ ++recurse;
+
+ switch (tv->v_type) {
+ case VAR_FUNC:
+ *tofree = NULL;
+ r = tv->vval.v_string;
+ break;
+
+ case VAR_LIST:
+ if (tv->vval.v_list == NULL) {
+ *tofree = NULL;
+ r = NULL;
+ } else if (copyID != 0 && tv->vval.v_list->lv_copyID == copyID) {
+ *tofree = NULL;
+ r = (char_u *)"[...]";
+ } else {
+ tv->vval.v_list->lv_copyID = copyID;
+ *tofree = list2string(tv, copyID);
+ r = *tofree;
+ }
+ break;
+
+ case VAR_DICT:
+ if (tv->vval.v_dict == NULL) {
+ *tofree = NULL;
+ r = NULL;
+ } else if (copyID != 0 && tv->vval.v_dict->dv_copyID == copyID) {
+ *tofree = NULL;
+ r = (char_u *)"{...}";
+ } else {
+ tv->vval.v_dict->dv_copyID = copyID;
+ *tofree = dict2string(tv, copyID);
+ r = *tofree;
+ }
+ break;
+
+ case VAR_STRING:
+ case VAR_NUMBER:
+ *tofree = NULL;
+ r = get_tv_string_buf(tv, numbuf);
+ break;
+
+ case VAR_FLOAT:
+ *tofree = NULL;
+ vim_snprintf((char *)numbuf, NUMBUFLEN, "%g", tv->vval.v_float);
+ r = numbuf;
+ break;
+
+ default:
+ EMSG2(_(e_intern2), "echo_string()");
+ *tofree = NULL;
+ }
+
+ --recurse;
+ return r;
+}
+
+/*
+ * Return a string with the string representation of a variable.
+ * If the memory is allocated "tofree" is set to it, otherwise NULL.
+ * "numbuf" is used for a number.
+ * Puts quotes around strings, so that they can be parsed back by eval().
+ * May return NULL.
+ */
+static char_u *tv2string(typval_T *tv, char_u **tofree, char_u *numbuf, int copyID)
+{
+ switch (tv->v_type) {
+ case VAR_FUNC:
+ *tofree = string_quote(tv->vval.v_string, TRUE);
+ return *tofree;
+ case VAR_STRING:
+ *tofree = string_quote(tv->vval.v_string, FALSE);
+ return *tofree;
+ case VAR_FLOAT:
+ *tofree = NULL;
+ vim_snprintf((char *)numbuf, NUMBUFLEN - 1, "%g", tv->vval.v_float);
+ return numbuf;
+ case VAR_NUMBER:
+ case VAR_LIST:
+ case VAR_DICT:
+ break;
+ default:
+ EMSG2(_(e_intern2), "tv2string()");
+ }
+ return echo_string(tv, tofree, numbuf, copyID);
+}
+
+/*
+ * Return string "str" in ' quotes, doubling ' characters.
+ * If "str" is NULL an empty string is assumed.
+ * If "function" is TRUE make it function('string').
+ */
+static char_u *string_quote(char_u *str, int function)
+{
+ unsigned len;
+ char_u *p, *r, *s;
+
+ len = (function ? 13 : 3);
+ if (str != NULL) {
+ len += (unsigned)STRLEN(str);
+ for (p = str; *p != NUL; mb_ptr_adv(p))
+ if (*p == '\'')
+ ++len;
+ }
+ s = r = alloc(len);
+ if (r != NULL) {
+ if (function) {
+ STRCPY(r, "function('");
+ r += 10;
+ } else
+ *r++ = '\'';
+ if (str != NULL)
+ for (p = str; *p != NUL; ) {
+ if (*p == '\'')
+ *r++ = '\'';
+ MB_COPY_CHAR(p, r);
+ }
+ *r++ = '\'';
+ if (function)
+ *r++ = ')';
+ *r++ = NUL;
+ }
+ return s;
+}
+
+/*
+ * Convert the string "text" to a floating point number.
+ * This uses strtod(). setlocale(LC_NUMERIC, "C") has been used to make sure
+ * this always uses a decimal point.
+ * Returns the length of the text that was consumed.
+ */
+static int
+string2float (
+ char_u *text,
+ float_T *value /* result stored here */
+)
+{
+ char *s = (char *)text;
+ float_T f;
+
+ f = strtod(s, &s);
+ *value = f;
+ return (int)((char_u *)s - text);
+}
+
+/// Get the value of an environment variable.
+///
+/// If the environment variable was not set, silently assume it is empty.
+///
+/// @param arg Points to the '$'. It is advanced to after the name.
+/// @return FAIL if the name is invalid.
+///
+static int get_env_tv(char_u **arg, typval_T *rettv, int evaluate)
+{
+ char_u *name;
+ char_u *string = NULL;
+ int mustfree = FALSE;
+ int len;
+ int cc;
+
+ ++*arg;
+ name = *arg;
+ len = get_env_len(arg);
+
+ if (evaluate) {
+ if (len == 0) {
+ return FAIL; // Can't be an environment variable.
+ }
+ cc = name[len];
+ name[len] = NUL;
+ // First try vim_getenv(), fast for normal environment vars.
+ string = vim_getenv(name, &mustfree);
+ if (string != NULL && *string != NUL) {
+ if (!mustfree) {
+ string = vim_strsave(string);
+ }
+ } else {
+ if (mustfree) {
+ free(string);
+ }
+
+ // Next try expanding things like $VIM and ${HOME}.
+ string = expand_env_save(name - 1);
+ if (string != NULL && *string == '$') {
+ free(string);
+ string = NULL;
+ }
+ }
+ name[len] = cc;
+ rettv->v_type = VAR_STRING;
+ rettv->vval.v_string = string;
+ }
+
+ return OK;
+}
+
+/*
+ * Array with names and number of arguments of all internal functions
+ * MUST BE KEPT SORTED IN strcmp() ORDER FOR BINARY SEARCH!
+ */
+static struct fst {
+ char *f_name; /* function name */
+ char f_min_argc; /* minimal number of arguments */
+ char f_max_argc; /* maximal number of arguments */
+ void (*f_func)(typval_T *args, typval_T *rvar);
+ /* implementation of function */
+} functions[] =
+{
+ {"abs", 1, 1, f_abs},
+ {"acos", 1, 1, f_acos}, /* WJMc */
+ {"add", 2, 2, f_add},
+ {"and", 2, 2, f_and},
+ {"append", 2, 2, f_append},
+ {"argc", 0, 0, f_argc},
+ {"argidx", 0, 0, f_argidx},
+ {"argv", 0, 1, f_argv},
+ {"asin", 1, 1, f_asin}, /* WJMc */
+ {"atan", 1, 1, f_atan},
+ {"atan2", 2, 2, f_atan2},
+ {"browse", 4, 4, f_browse},
+ {"browsedir", 2, 2, f_browsedir},
+ {"bufexists", 1, 1, f_bufexists},
+ {"buffer_exists", 1, 1, f_bufexists}, /* obsolete */
+ {"buffer_name", 1, 1, f_bufname}, /* obsolete */
+ {"buffer_number", 1, 1, f_bufnr}, /* obsolete */
+ {"buflisted", 1, 1, f_buflisted},
+ {"bufloaded", 1, 1, f_bufloaded},
+ {"bufname", 1, 1, f_bufname},
+ {"bufnr", 1, 2, f_bufnr},
+ {"bufwinnr", 1, 1, f_bufwinnr},
+ {"byte2line", 1, 1, f_byte2line},
+ {"byteidx", 2, 2, f_byteidx},
+ {"byteidxcomp", 2, 2, f_byteidxcomp},
+ {"call", 2, 3, f_call},
+ {"ceil", 1, 1, f_ceil},
+ {"changenr", 0, 0, f_changenr},
+ {"char2nr", 1, 2, f_char2nr},
+ {"cindent", 1, 1, f_cindent},
+ {"clearmatches", 0, 0, f_clearmatches},
+ {"col", 1, 1, f_col},
+ {"complete", 2, 2, f_complete},
+ {"complete_add", 1, 1, f_complete_add},
+ {"complete_check", 0, 0, f_complete_check},
+ {"confirm", 1, 4, f_confirm},
+ {"copy", 1, 1, f_copy},
+ {"cos", 1, 1, f_cos},
+ {"cosh", 1, 1, f_cosh},
+ {"count", 2, 4, f_count},
+ {"cscope_connection",0,3, f_cscope_connection},
+ {"cursor", 1, 3, f_cursor},
+ {"deepcopy", 1, 2, f_deepcopy},
+ {"delete", 1, 1, f_delete},
+ {"did_filetype", 0, 0, f_did_filetype},
+ {"diff_filler", 1, 1, f_diff_filler},
+ {"diff_hlID", 2, 2, f_diff_hlID},
+ {"empty", 1, 1, f_empty},
+ {"escape", 2, 2, f_escape},
+ {"eval", 1, 1, f_eval},
+ {"eventhandler", 0, 0, f_eventhandler},
+ {"executable", 1, 1, f_executable},
+ {"exists", 1, 1, f_exists},
+ {"exp", 1, 1, f_exp},
+ {"expand", 1, 3, f_expand},
+ {"extend", 2, 3, f_extend},
+ {"feedkeys", 1, 2, f_feedkeys},
+ {"file_readable", 1, 1, f_filereadable}, /* obsolete */
+ {"filereadable", 1, 1, f_filereadable},
+ {"filewritable", 1, 1, f_filewritable},
+ {"filter", 2, 2, f_filter},
+ {"finddir", 1, 3, f_finddir},
+ {"findfile", 1, 3, f_findfile},
+ {"float2nr", 1, 1, f_float2nr},
+ {"floor", 1, 1, f_floor},
+ {"fmod", 2, 2, f_fmod},
+ {"fnameescape", 1, 1, f_fnameescape},
+ {"fnamemodify", 2, 2, f_fnamemodify},
+ {"foldclosed", 1, 1, f_foldclosed},
+ {"foldclosedend", 1, 1, f_foldclosedend},
+ {"foldlevel", 1, 1, f_foldlevel},
+ {"foldtext", 0, 0, f_foldtext},
+ {"foldtextresult", 1, 1, f_foldtextresult},
+ {"foreground", 0, 0, f_foreground},
+ {"function", 1, 1, f_function},
+ {"garbagecollect", 0, 1, f_garbagecollect},
+ {"get", 2, 3, f_get},
+ {"getbufline", 2, 3, f_getbufline},
+ {"getbufvar", 2, 3, f_getbufvar},
+ {"getchar", 0, 1, f_getchar},
+ {"getcharmod", 0, 0, f_getcharmod},
+ {"getcmdline", 0, 0, f_getcmdline},
+ {"getcmdpos", 0, 0, f_getcmdpos},
+ {"getcmdtype", 0, 0, f_getcmdtype},
+ {"getcwd", 0, 0, f_getcwd},
+ {"getfontname", 0, 1, f_getfontname},
+ {"getfperm", 1, 1, f_getfperm},
+ {"getfsize", 1, 1, f_getfsize},
+ {"getftime", 1, 1, f_getftime},
+ {"getftype", 1, 1, f_getftype},
+ {"getline", 1, 2, f_getline},
+ {"getloclist", 1, 1, f_getqflist},
+ {"getmatches", 0, 0, f_getmatches},
+ {"getpid", 0, 0, f_getpid},
+ {"getpos", 1, 1, f_getpos},
+ {"getqflist", 0, 0, f_getqflist},
+ {"getreg", 0, 2, f_getreg},
+ {"getregtype", 0, 1, f_getregtype},
+ {"gettabvar", 2, 3, f_gettabvar},
+ {"gettabwinvar", 3, 4, f_gettabwinvar},
+ {"getwinposx", 0, 0, f_getwinposx},
+ {"getwinposy", 0, 0, f_getwinposy},
+ {"getwinvar", 2, 3, f_getwinvar},
+ {"glob", 1, 3, f_glob},
+ {"globpath", 2, 3, f_globpath},
+ {"has", 1, 1, f_has},
+ {"has_key", 2, 2, f_has_key},
+ {"haslocaldir", 0, 0, f_haslocaldir},
+ {"hasmapto", 1, 3, f_hasmapto},
+ {"highlightID", 1, 1, f_hlID}, /* obsolete */
+ {"highlight_exists",1, 1, f_hlexists}, /* obsolete */
+ {"histadd", 2, 2, f_histadd},
+ {"histdel", 1, 2, f_histdel},
+ {"histget", 1, 2, f_histget},
+ {"histnr", 1, 1, f_histnr},
+ {"hlID", 1, 1, f_hlID},
+ {"hlexists", 1, 1, f_hlexists},
+ {"hostname", 0, 0, f_hostname},
+ {"iconv", 3, 3, f_iconv},
+ {"indent", 1, 1, f_indent},
+ {"index", 2, 4, f_index},
+ {"input", 1, 3, f_input},
+ {"inputdialog", 1, 3, f_inputdialog},
+ {"inputlist", 1, 1, f_inputlist},
+ {"inputrestore", 0, 0, f_inputrestore},
+ {"inputsave", 0, 0, f_inputsave},
+ {"inputsecret", 1, 2, f_inputsecret},
+ {"insert", 2, 3, f_insert},
+ {"invert", 1, 1, f_invert},
+ {"isdirectory", 1, 1, f_isdirectory},
+ {"islocked", 1, 1, f_islocked},
+ {"items", 1, 1, f_items},
+ {"jobstart", 2, 3, f_job_start},
+ {"jobstop", 1, 1, f_job_stop},
+ {"jobwrite", 2, 2, f_job_write},
+ {"join", 1, 2, f_join},
+ {"keys", 1, 1, f_keys},
+ {"last_buffer_nr", 0, 0, f_last_buffer_nr}, /* obsolete */
+ {"len", 1, 1, f_len},
+ {"libcall", 3, 3, f_libcall},
+ {"libcallnr", 3, 3, f_libcallnr},
+ {"line", 1, 1, f_line},
+ {"line2byte", 1, 1, f_line2byte},
+ {"lispindent", 1, 1, f_lispindent},
+ {"localtime", 0, 0, f_localtime},
+ {"log", 1, 1, f_log},
+ {"log10", 1, 1, f_log10},
+ {"map", 2, 2, f_map},
+ {"maparg", 1, 4, f_maparg},
+ {"mapcheck", 1, 3, f_mapcheck},
+ {"match", 2, 4, f_match},
+ {"matchadd", 2, 4, f_matchadd},
+ {"matcharg", 1, 1, f_matcharg},
+ {"matchdelete", 1, 1, f_matchdelete},
+ {"matchend", 2, 4, f_matchend},
+ {"matchlist", 2, 4, f_matchlist},
+ {"matchstr", 2, 4, f_matchstr},
+ {"max", 1, 1, f_max},
+ {"min", 1, 1, f_min},
+ {"mkdir", 1, 3, f_mkdir},
+ {"mode", 0, 1, f_mode},
+ {"nextnonblank", 1, 1, f_nextnonblank},
+ {"nr2char", 1, 2, f_nr2char},
+ {"or", 2, 2, f_or},
+ {"pathshorten", 1, 1, f_pathshorten},
+ {"pow", 2, 2, f_pow},
+ {"prevnonblank", 1, 1, f_prevnonblank},
+ {"printf", 2, 19, f_printf},
+ {"pumvisible", 0, 0, f_pumvisible},
+ {"range", 1, 3, f_range},
+ {"readfile", 1, 3, f_readfile},
+ {"reltime", 0, 2, f_reltime},
+ {"reltimestr", 1, 1, f_reltimestr},
+ {"remote_expr", 2, 3, f_remote_expr},
+ {"remote_foreground", 1, 1, f_remote_foreground},
+ {"remote_peek", 1, 2, f_remote_peek},
+ {"remote_read", 1, 1, f_remote_read},
+ {"remote_send", 2, 3, f_remote_send},
+ {"remove", 2, 3, f_remove},
+ {"rename", 2, 2, f_rename},
+ {"repeat", 2, 2, f_repeat},
+ {"resolve", 1, 1, f_resolve},
+ {"reverse", 1, 1, f_reverse},
+ {"round", 1, 1, f_round},
+ {"screenattr", 2, 2, f_screenattr},
+ {"screenchar", 2, 2, f_screenchar},
+ {"screencol", 0, 0, f_screencol},
+ {"screenrow", 0, 0, f_screenrow},
+ {"search", 1, 4, f_search},
+ {"searchdecl", 1, 3, f_searchdecl},
+ {"searchpair", 3, 7, f_searchpair},
+ {"searchpairpos", 3, 7, f_searchpairpos},
+ {"searchpos", 1, 4, f_searchpos},
+ {"server2client", 2, 2, f_server2client},
+ {"serverlist", 0, 0, f_serverlist},
+ {"setbufvar", 3, 3, f_setbufvar},
+ {"setcmdpos", 1, 1, f_setcmdpos},
+ {"setline", 2, 2, f_setline},
+ {"setloclist", 2, 3, f_setloclist},
+ {"setmatches", 1, 1, f_setmatches},
+ {"setpos", 2, 2, f_setpos},
+ {"setqflist", 1, 2, f_setqflist},
+ {"setreg", 2, 3, f_setreg},
+ {"settabvar", 3, 3, f_settabvar},
+ {"settabwinvar", 4, 4, f_settabwinvar},
+ {"setwinvar", 3, 3, f_setwinvar},
+ {"sha256", 1, 1, f_sha256},
+ {"shellescape", 1, 2, f_shellescape},
+ {"shiftwidth", 0, 0, f_shiftwidth},
+ {"simplify", 1, 1, f_simplify},
+ {"sin", 1, 1, f_sin},
+ {"sinh", 1, 1, f_sinh},
+ {"sort", 1, 3, f_sort},
+ {"soundfold", 1, 1, f_soundfold},
+ {"spellbadword", 0, 1, f_spellbadword},
+ {"spellsuggest", 1, 3, f_spellsuggest},
+ {"split", 1, 3, f_split},
+ {"sqrt", 1, 1, f_sqrt},
+ {"str2float", 1, 1, f_str2float},
+ {"str2nr", 1, 2, f_str2nr},
+ {"strchars", 1, 1, f_strchars},
+ {"strdisplaywidth", 1, 2, f_strdisplaywidth},
+ {"strftime", 1, 2, f_strftime},
+ {"stridx", 2, 3, f_stridx},
+ {"string", 1, 1, f_string},
+ {"strlen", 1, 1, f_strlen},
+ {"strpart", 2, 3, f_strpart},
+ {"strridx", 2, 3, f_strridx},
+ {"strtrans", 1, 1, f_strtrans},
+ {"strwidth", 1, 1, f_strwidth},
+ {"submatch", 1, 2, f_submatch},
+ {"substitute", 4, 4, f_substitute},
+ {"synID", 3, 3, f_synID},
+ {"synIDattr", 2, 3, f_synIDattr},
+ {"synIDtrans", 1, 1, f_synIDtrans},
+ {"synconcealed", 2, 2, f_synconcealed},
+ {"synstack", 2, 2, f_synstack},
+ {"system", 1, 2, f_system},
+ {"tabpagebuflist", 0, 1, f_tabpagebuflist},
+ {"tabpagenr", 0, 1, f_tabpagenr},
+ {"tabpagewinnr", 1, 2, f_tabpagewinnr},
+ {"tagfiles", 0, 0, f_tagfiles},
+ {"taglist", 1, 1, f_taglist},
+ {"tan", 1, 1, f_tan},
+ {"tanh", 1, 1, f_tanh},
+ {"tempname", 0, 0, f_tempname},
+ {"test", 1, 1, f_test},
+ {"tolower", 1, 1, f_tolower},
+ {"toupper", 1, 1, f_toupper},
+ {"tr", 3, 3, f_tr},
+ {"trunc", 1, 1, f_trunc},
+ {"type", 1, 1, f_type},
+ {"undofile", 1, 1, f_undofile},
+ {"undotree", 0, 0, f_undotree},
+ {"uniq", 1, 3, f_uniq},
+ {"values", 1, 1, f_values},
+ {"virtcol", 1, 1, f_virtcol},
+ {"visualmode", 0, 1, f_visualmode},
+ {"wildmenumode", 0, 0, f_wildmenumode},
+ {"winbufnr", 1, 1, f_winbufnr},
+ {"wincol", 0, 0, f_wincol},
+ {"winheight", 1, 1, f_winheight},
+ {"winline", 0, 0, f_winline},
+ {"winnr", 0, 1, f_winnr},
+ {"winrestcmd", 0, 0, f_winrestcmd},
+ {"winrestview", 1, 1, f_winrestview},
+ {"winsaveview", 0, 0, f_winsaveview},
+ {"winwidth", 1, 1, f_winwidth},
+ {"writefile", 2, 3, f_writefile},
+ {"xor", 2, 2, f_xor},
+};
+
+
+/*
+ * Function given to ExpandGeneric() to obtain the list of internal
+ * or user defined function names.
+ */
+char_u *get_function_name(expand_T *xp, int idx)
+{
+ static int intidx = -1;
+ char_u *name;
+
+ if (idx == 0)
+ intidx = -1;
+ if (intidx < 0) {
+ name = get_user_func_name(xp, idx);
+ if (name != NULL)
+ return name;
+ }
+ if (++intidx < (int)(sizeof(functions) / sizeof(struct fst))) {
+ STRCPY(IObuff, functions[intidx].f_name);
+ STRCAT(IObuff, "(");
+ if (functions[intidx].f_max_argc == 0)
+ STRCAT(IObuff, ")");
+ return IObuff;
+ }
+
+ return NULL;
+}
+
+/*
+ * Function given to ExpandGeneric() to obtain the list of internal or
+ * user defined variable or function names.
+ */
+char_u *get_expr_name(expand_T *xp, int idx)
+{
+ static int intidx = -1;
+ char_u *name;
+
+ if (idx == 0)
+ intidx = -1;
+ if (intidx < 0) {
+ name = get_function_name(xp, idx);
+ if (name != NULL)
+ return name;
+ }
+ return get_user_var_name(xp, ++intidx);
+}
+
+
+
+
+/*
+ * Find internal function in table above.
+ * Return index, or -1 if not found
+ */
+static int
+find_internal_func (
+ char_u *name /* name of the function */
+)
+{
+ int first = 0;
+ int last = (int)(sizeof(functions) / sizeof(struct fst)) - 1;
+
+ /*
+ * Find the function name in the table. Binary search.
+ */
+ while (first <= last) {
+ int x = first + ((unsigned)(last - first)) / 2;
+ int cmp = STRCMP(name, functions[x].f_name);
+ if (cmp < 0)
+ last = x - 1;
+ else if (cmp > 0)
+ first = x + 1;
+ else
+ return x;
+ }
+ return -1;
+}
+
+/*
+ * Check if "name" is a variable of type VAR_FUNC. If so, return the function
+ * name it contains, otherwise return "name".
+ */
+static char_u *deref_func_name(char_u *name, int *lenp, int no_autoload)
+{
+ dictitem_T *v;
+ int cc;
+
+ cc = name[*lenp];
+ name[*lenp] = NUL;
+ v = find_var(name, NULL, no_autoload);
+ name[*lenp] = cc;
+ if (v != NULL && v->di_tv.v_type == VAR_FUNC) {
+ if (v->di_tv.vval.v_string == NULL) {
+ *lenp = 0;
+ return (char_u *)""; /* just in case */
+ }
+ *lenp = (int)STRLEN(v->di_tv.vval.v_string);
+ return v->di_tv.vval.v_string;
+ }
+
+ return name;
+}
+
+/*
+ * Allocate a variable for the result of a function.
+ * Return OK or FAIL.
+ */
+static int
+get_func_tv (
+ char_u *name, /* name of the function */
+ int len, /* length of "name" */
+ typval_T *rettv,
+ char_u **arg, /* argument, pointing to the '(' */
+ linenr_T firstline, /* first line of range */
+ linenr_T lastline, /* last line of range */
+ int *doesrange, /* return: function handled range */
+ int evaluate,
+ dict_T *selfdict /* Dictionary for "self" */
+)
+{
+ char_u *argp;
+ int ret = OK;
+ typval_T argvars[MAX_FUNC_ARGS + 1]; /* vars for arguments */
+ int argcount = 0; /* number of arguments found */
+
+ /*
+ * Get the arguments.
+ */
+ argp = *arg;
+ while (argcount < MAX_FUNC_ARGS) {
+ argp = skipwhite(argp + 1); /* skip the '(' or ',' */
+ if (*argp == ')' || *argp == ',' || *argp == NUL)
+ break;
+ if (eval1(&argp, &argvars[argcount], evaluate) == FAIL) {
+ ret = FAIL;
+ break;
+ }
+ ++argcount;
+ if (*argp != ',')
+ break;
+ }
+ if (*argp == ')')
+ ++argp;
+ else
+ ret = FAIL;
+
+ if (ret == OK)
+ ret = call_func(name, len, rettv, argcount, argvars,
+ firstline, lastline, doesrange, evaluate, selfdict);
+ else if (!aborting()) {
+ if (argcount == MAX_FUNC_ARGS)
+ emsg_funcname(N_("E740: Too many arguments for function %s"), name);
+ else
+ emsg_funcname(N_("E116: Invalid arguments for function %s"), name);
+ }
+
+ while (--argcount >= 0)
+ clear_tv(&argvars[argcount]);
+
+ *arg = skipwhite(argp);
+ return ret;
+}
+
+
+/*
+ * Call a function with its resolved parameters
+ * Return FAIL when the function can't be called, OK otherwise.
+ * Also returns OK when an error was encountered while executing the function.
+ */
+static int
+call_func (
+ char_u *funcname, /* name of the function */
+ int len, /* length of "name" */
+ typval_T *rettv, /* return value goes here */
+ int argcount, /* number of "argvars" */
+ typval_T *argvars, /* vars for arguments, must have "argcount"
+ PLUS ONE elements! */
+ linenr_T firstline, /* first line of range */
+ linenr_T lastline, /* last line of range */
+ int *doesrange, /* return: function handled range */
+ int evaluate,
+ dict_T *selfdict /* Dictionary for "self" */
+)
+{
+ int ret = FAIL;
+#define ERROR_UNKNOWN 0
+#define ERROR_TOOMANY 1
+#define ERROR_TOOFEW 2
+#define ERROR_SCRIPT 3
+#define ERROR_DICT 4
+#define ERROR_NONE 5
+#define ERROR_OTHER 6
+ int error = ERROR_NONE;
+ int i;
+ int llen;
+ ufunc_T *fp;
+#define FLEN_FIXED 40
+ char_u fname_buf[FLEN_FIXED + 1];
+ char_u *fname;
+ char_u *name;
+
+ /* Make a copy of the name, if it comes from a funcref variable it could
+ * be changed or deleted in the called function. */
+ name = vim_strnsave(funcname, len);
+ if (name == NULL)
+ return ret;
+
+ /*
+ * In a script change <SID>name() and s:name() to K_SNR 123_name().
+ * Change <SNR>123_name() to K_SNR 123_name().
+ * Use fname_buf[] when it fits, otherwise allocate memory (slow).
+ */
+ llen = eval_fname_script(name);
+ if (llen > 0) {
+ fname_buf[0] = K_SPECIAL;
+ fname_buf[1] = KS_EXTRA;
+ fname_buf[2] = (int)KE_SNR;
+ i = 3;
+ if (eval_fname_sid(name)) { /* "<SID>" or "s:" */
+ if (current_SID <= 0)
+ error = ERROR_SCRIPT;
+ else {
+ sprintf((char *)fname_buf + 3, "%" PRId64 "_", (int64_t)current_SID);
+ i = (int)STRLEN(fname_buf);
+ }
+ }
+ if (i + STRLEN(name + llen) < FLEN_FIXED) {
+ STRCPY(fname_buf + i, name + llen);
+ fname = fname_buf;
+ } else {
+ fname = alloc((unsigned)(i + STRLEN(name + llen) + 1));
+ if (fname == NULL)
+ error = ERROR_OTHER;
+ else {
+ memmove(fname, fname_buf, (size_t)i);
+ STRCPY(fname + i, name + llen);
+ }
+ }
+ } else
+ fname = name;
+
+ *doesrange = FALSE;
+
+
+ /* execute the function if no errors detected and executing */
+ if (evaluate && error == ERROR_NONE) {
+ char_u *rfname = fname;
+
+ /* Ignore "g:" before a function name. */
+ if (fname[0] == 'g' && fname[1] == ':') {
+ rfname = fname + 2;
+ }
+
+ rettv->v_type = VAR_NUMBER; /* default rettv is number zero */
+ rettv->vval.v_number = 0;
+ error = ERROR_UNKNOWN;
+
+ if (!builtin_function(rfname, -1)) {
+ /*
+ * User defined function.
+ */
+ fp = find_func(rfname);
+
+ /* Trigger FuncUndefined event, may load the function. */
+ if (fp == NULL
+ && apply_autocmds(EVENT_FUNCUNDEFINED, rfname, rfname, TRUE, NULL)
+ && !aborting()) {
+ /* executed an autocommand, search for the function again */
+ fp = find_func(rfname);
+ }
+ /* Try loading a package. */
+ if (fp == NULL && script_autoload(rfname, TRUE) && !aborting()) {
+ /* loaded a package, search for the function again */
+ fp = find_func(rfname);
+ }
+
+ if (fp != NULL) {
+ if (fp->uf_flags & FC_RANGE)
+ *doesrange = TRUE;
+ if (argcount < fp->uf_args.ga_len)
+ error = ERROR_TOOFEW;
+ else if (!fp->uf_varargs && argcount > fp->uf_args.ga_len)
+ error = ERROR_TOOMANY;
+ else if ((fp->uf_flags & FC_DICT) && selfdict == NULL)
+ error = ERROR_DICT;
+ else {
+ /*
+ * Call the user function.
+ * Save and restore search patterns, script variables and
+ * redo buffer.
+ */
+ save_search_patterns();
+ saveRedobuff();
+ ++fp->uf_calls;
+ call_user_func(fp, argcount, argvars, rettv,
+ firstline, lastline,
+ (fp->uf_flags & FC_DICT) ? selfdict : NULL);
+ if (--fp->uf_calls <= 0 && isdigit(*fp->uf_name)
+ && fp->uf_refcount <= 0)
+ /* Function was unreferenced while being used, free it
+ * now. */
+ func_free(fp);
+ restoreRedobuff();
+ restore_search_patterns();
+ error = ERROR_NONE;
+ }
+ }
+ } else {
+ /*
+ * Find the function name in the table, call its implementation.
+ */
+ i = find_internal_func(fname);
+ if (i >= 0) {
+ if (argcount < functions[i].f_min_argc)
+ error = ERROR_TOOFEW;
+ else if (argcount > functions[i].f_max_argc)
+ error = ERROR_TOOMANY;
+ else {
+ argvars[argcount].v_type = VAR_UNKNOWN;
+ functions[i].f_func(argvars, rettv);
+ error = ERROR_NONE;
+ }
+ }
+ }
+ /*
+ * The function call (or "FuncUndefined" autocommand sequence) might
+ * have been aborted by an error, an interrupt, or an explicitly thrown
+ * exception that has not been caught so far. This situation can be
+ * tested for by calling aborting(). For an error in an internal
+ * function or for the "E132" error in call_user_func(), however, the
+ * throw point at which the "force_abort" flag (temporarily reset by
+ * emsg()) is normally updated has not been reached yet. We need to
+ * update that flag first to make aborting() reliable.
+ */
+ update_force_abort();
+ }
+ if (error == ERROR_NONE)
+ ret = OK;
+
+ /*
+ * Report an error unless the argument evaluation or function call has been
+ * cancelled due to an aborting error, an interrupt, or an exception.
+ */
+ if (!aborting()) {
+ switch (error) {
+ case ERROR_UNKNOWN:
+ emsg_funcname(N_("E117: Unknown function: %s"), name);
+ break;
+ case ERROR_TOOMANY:
+ emsg_funcname(e_toomanyarg, name);
+ break;
+ case ERROR_TOOFEW:
+ emsg_funcname(N_("E119: Not enough arguments for function: %s"),
+ name);
+ break;
+ case ERROR_SCRIPT:
+ emsg_funcname(N_("E120: Using <SID> not in a script context: %s"),
+ name);
+ break;
+ case ERROR_DICT:
+ emsg_funcname(N_("E725: Calling dict function without Dictionary: %s"),
+ name);
+ break;
+ }
+ }
+
+ if (fname != name && fname != fname_buf)
+ free(fname);
+ free(name);
+
+ return ret;
+}
+
+/*
+ * Give an error message with a function name. Handle <SNR> things.
+ * "ermsg" is to be passed without translation, use N_() instead of _().
+ */
+static void emsg_funcname(char *ermsg, char_u *name)
+{
+ char_u *p;
+
+ if (*name == K_SPECIAL)
+ p = concat_str((char_u *)"<SNR>", name + 3);
+ else
+ p = name;
+ EMSG2(_(ermsg), p);
+ if (p != name)
+ free(p);
+}
+
+/*
+ * Return TRUE for a non-zero Number and a non-empty String.
+ */
+static int non_zero_arg(typval_T *argvars)
+{
+ return (argvars[0].v_type == VAR_NUMBER
+ && argvars[0].vval.v_number != 0)
+ || (argvars[0].v_type == VAR_STRING
+ && argvars[0].vval.v_string != NULL
+ && *argvars[0].vval.v_string != NUL);
+}
+
+/*********************************************
+ * Implementation of the built-in functions
+ */
+
+static int get_float_arg(typval_T *argvars, float_T *f);
+
+/*
+ * Get the float value of "argvars[0]" into "f".
+ * Returns FAIL when the argument is not a Number or Float.
+ */
+static int get_float_arg(typval_T *argvars, float_T *f)
+{
+ if (argvars[0].v_type == VAR_FLOAT) {
+ *f = argvars[0].vval.v_float;
+ return OK;
+ }
+ if (argvars[0].v_type == VAR_NUMBER) {
+ *f = (float_T)argvars[0].vval.v_number;
+ return OK;
+ }
+ EMSG(_("E808: Number or Float required"));
+ return FAIL;
+}
+
+/*
+ * "abs(expr)" function
+ */
+static void f_abs(typval_T *argvars, typval_T *rettv)
+{
+ if (argvars[0].v_type == VAR_FLOAT) {
+ rettv->v_type = VAR_FLOAT;
+ rettv->vval.v_float = fabs(argvars[0].vval.v_float);
+ } else {
+ varnumber_T n;
+ int error = FALSE;
+
+ n = get_tv_number_chk(&argvars[0], &error);
+ if (error)
+ rettv->vval.v_number = -1;
+ else if (n > 0)
+ rettv->vval.v_number = n;
+ else
+ rettv->vval.v_number = -n;
+ }
+}
+
+/*
+ * "acos()" function
+ */
+static void f_acos(typval_T *argvars, typval_T *rettv)
+{
+ float_T f;
+
+ rettv->v_type = VAR_FLOAT;
+ if (get_float_arg(argvars, &f) == OK)
+ rettv->vval.v_float = acos(f);
+ else
+ rettv->vval.v_float = 0.0;
+}
+
+/*
+ * "add(list, item)" function
+ */
+static void f_add(typval_T *argvars, typval_T *rettv)
+{
+ list_T *l;
+
+ rettv->vval.v_number = 1; /* Default: Failed */
+ if (argvars[0].v_type == VAR_LIST) {
+ if ((l = argvars[0].vval.v_list) != NULL
+ && !tv_check_lock(l->lv_lock, (char_u *)_("add() argument"))) {
+ list_append_tv(l, &argvars[1]);
+ copy_tv(&argvars[0], rettv);
+ }
+ } else
+ EMSG(_(e_listreq));
+}
+
+/*
+ * "and(expr, expr)" function
+ */
+static void f_and(typval_T *argvars, typval_T *rettv)
+{
+ rettv->vval.v_number = get_tv_number_chk(&argvars[0], NULL)
+ & get_tv_number_chk(&argvars[1], NULL);
+}
+
+/*
+ * "append(lnum, string/list)" function
+ */
+static void f_append(typval_T *argvars, typval_T *rettv)
+{
+ long lnum;
+ char_u *line;
+ list_T *l = NULL;
+ listitem_T *li = NULL;
+ typval_T *tv;
+ long added = 0;
+
+ /* When coming here from Insert mode, sync undo, so that this can be
+ * undone separately from what was previously inserted. */
+ if (u_sync_once == 2) {
+ u_sync_once = 1; /* notify that u_sync() was called */
+ u_sync(TRUE);
+ }
+
+ lnum = get_tv_lnum(argvars);
+ if (lnum >= 0
+ && lnum <= curbuf->b_ml.ml_line_count
+ && u_save(lnum, lnum + 1) == OK) {
+ if (argvars[1].v_type == VAR_LIST) {
+ l = argvars[1].vval.v_list;
+ if (l == NULL)
+ return;
+ li = l->lv_first;
+ }
+ for (;; ) {
+ if (l == NULL)
+ tv = &argvars[1]; /* append a string */
+ else if (li == NULL)
+ break; /* end of list */
+ else
+ tv = &li->li_tv; /* append item from list */
+ line = get_tv_string_chk(tv);
+ if (line == NULL) { /* type error */
+ rettv->vval.v_number = 1; /* Failed */
+ break;
+ }
+ ml_append(lnum + added, line, (colnr_T)0, FALSE);
+ ++added;
+ if (l == NULL)
+ break;
+ li = li->li_next;
+ }
+
+ appended_lines_mark(lnum, added);
+ if (curwin->w_cursor.lnum > lnum)
+ curwin->w_cursor.lnum += added;
+ } else
+ rettv->vval.v_number = 1; /* Failed */
+}
+
+/*
+ * "argc()" function
+ */
+static void f_argc(typval_T *argvars, typval_T *rettv)
+{
+ rettv->vval.v_number = ARGCOUNT;
+}
+
+/*
+ * "argidx()" function
+ */
+static void f_argidx(typval_T *argvars, typval_T *rettv)
+{
+ rettv->vval.v_number = curwin->w_arg_idx;
+}
+
+/*
+ * "argv(nr)" function
+ */
+static void f_argv(typval_T *argvars, typval_T *rettv)
+{
+ int idx;
+
+ if (argvars[0].v_type != VAR_UNKNOWN) {
+ idx = get_tv_number_chk(&argvars[0], NULL);
+ if (idx >= 0 && idx < ARGCOUNT)
+ rettv->vval.v_string = vim_strsave(alist_name(&ARGLIST[idx]));
+ else
+ rettv->vval.v_string = NULL;
+ rettv->v_type = VAR_STRING;
+ } else {
+ rettv_list_alloc(rettv);
+ for (idx = 0; idx < ARGCOUNT; ++idx) {
+ list_append_string(rettv->vval.v_list, alist_name(&ARGLIST[idx]), -1);
+ }
+ }
+}
+
+/*
+ * "asin()" function
+ */
+static void f_asin(typval_T *argvars, typval_T *rettv)
+{
+ float_T f;
+
+ rettv->v_type = VAR_FLOAT;
+ if (get_float_arg(argvars, &f) == OK)
+ rettv->vval.v_float = asin(f);
+ else
+ rettv->vval.v_float = 0.0;
+}
+
+/*
+ * "atan()" function
+ */
+static void f_atan(typval_T *argvars, typval_T *rettv)
+{
+ float_T f;
+
+ rettv->v_type = VAR_FLOAT;
+ if (get_float_arg(argvars, &f) == OK)
+ rettv->vval.v_float = atan(f);
+ else
+ rettv->vval.v_float = 0.0;
+}
+
+/*
+ * "atan2()" function
+ */
+static void f_atan2(typval_T *argvars, typval_T *rettv)
+{
+ float_T fx, fy;
+
+ rettv->v_type = VAR_FLOAT;
+ if (get_float_arg(argvars, &fx) == OK
+ && get_float_arg(&argvars[1], &fy) == OK)
+ rettv->vval.v_float = atan2(fx, fy);
+ else
+ rettv->vval.v_float = 0.0;
+}
+
+/*
+ * "browse(save, title, initdir, default)" function
+ */
+static void f_browse(typval_T *argvars, typval_T *rettv)
+{
+ rettv->vval.v_string = NULL;
+ rettv->v_type = VAR_STRING;
+}
+
+/*
+ * "browsedir(title, initdir)" function
+ */
+static void f_browsedir(typval_T *argvars, typval_T *rettv)
+{
+ rettv->vval.v_string = NULL;
+ rettv->v_type = VAR_STRING;
+}
+
+static buf_T *find_buffer(typval_T *avar);
+
+/*
+ * Find a buffer by number or exact name.
+ */
+static buf_T *find_buffer(typval_T *avar)
+{
+ buf_T *buf = NULL;
+
+ if (avar->v_type == VAR_NUMBER)
+ buf = buflist_findnr((int)avar->vval.v_number);
+ else if (avar->v_type == VAR_STRING && avar->vval.v_string != NULL) {
+ buf = buflist_findname_exp(avar->vval.v_string);
+ if (buf == NULL) {
+ /* No full path name match, try a match with a URL or a "nofile"
+ * buffer, these don't use the full path. */
+ for (buf = firstbuf; buf != NULL; buf = buf->b_next)
+ if (buf->b_fname != NULL
+ && (path_with_url(buf->b_fname)
+ || bt_nofile(buf)
+ )
+ && STRCMP(buf->b_fname, avar->vval.v_string) == 0)
+ break;
+ }
+ }
+ return buf;
+}
+
+/*
+ * "bufexists(expr)" function
+ */
+static void f_bufexists(typval_T *argvars, typval_T *rettv)
+{
+ rettv->vval.v_number = (find_buffer(&argvars[0]) != NULL);
+}
+
+/*
+ * "buflisted(expr)" function
+ */
+static void f_buflisted(typval_T *argvars, typval_T *rettv)
+{
+ buf_T *buf;
+
+ buf = find_buffer(&argvars[0]);
+ rettv->vval.v_number = (buf != NULL && buf->b_p_bl);
+}
+
+/*
+ * "bufloaded(expr)" function
+ */
+static void f_bufloaded(typval_T *argvars, typval_T *rettv)
+{
+ buf_T *buf;
+
+ buf = find_buffer(&argvars[0]);
+ rettv->vval.v_number = (buf != NULL && buf->b_ml.ml_mfp != NULL);
+}
+
+static buf_T *get_buf_tv(typval_T *tv, int curtab_only);
+
+/*
+ * Get buffer by number or pattern.
+ */
+static buf_T *get_buf_tv(typval_T *tv, int curtab_only)
+{
+ char_u *name = tv->vval.v_string;
+ int save_magic;
+ char_u *save_cpo;
+ buf_T *buf;
+
+ if (tv->v_type == VAR_NUMBER)
+ return buflist_findnr((int)tv->vval.v_number);
+ if (tv->v_type != VAR_STRING)
+ return NULL;
+ if (name == NULL || *name == NUL)
+ return curbuf;
+ if (name[0] == '$' && name[1] == NUL)
+ return lastbuf;
+
+ /* Ignore 'magic' and 'cpoptions' here to make scripts portable */
+ save_magic = p_magic;
+ p_magic = TRUE;
+ save_cpo = p_cpo;
+ p_cpo = (char_u *)"";
+
+ buf = buflist_findnr(buflist_findpat(name, name + STRLEN(name),
+ TRUE, FALSE, curtab_only));
+
+ p_magic = save_magic;
+ p_cpo = save_cpo;
+
+ /* If not found, try expanding the name, like done for bufexists(). */
+ if (buf == NULL)
+ buf = find_buffer(tv);
+
+ return buf;
+}
+
+/*
+ * "bufname(expr)" function
+ */
+static void f_bufname(typval_T *argvars, typval_T *rettv)
+{
+ buf_T *buf;
+
+ (void)get_tv_number(&argvars[0]); /* issue errmsg if type error */
+ ++emsg_off;
+ buf = get_buf_tv(&argvars[0], FALSE);
+ rettv->v_type = VAR_STRING;
+ if (buf != NULL && buf->b_fname != NULL)
+ rettv->vval.v_string = vim_strsave(buf->b_fname);
+ else
+ rettv->vval.v_string = NULL;
+ --emsg_off;
+}
+
+/*
+ * "bufnr(expr)" function
+ */
+static void f_bufnr(typval_T *argvars, typval_T *rettv)
+{
+ buf_T *buf;
+ int error = FALSE;
+ char_u *name;
+
+ (void)get_tv_number(&argvars[0]); /* issue errmsg if type error */
+ ++emsg_off;
+ buf = get_buf_tv(&argvars[0], FALSE);
+ --emsg_off;
+
+ /* If the buffer isn't found and the second argument is not zero create a
+ * new buffer. */
+ if (buf == NULL
+ && argvars[1].v_type != VAR_UNKNOWN
+ && get_tv_number_chk(&argvars[1], &error) != 0
+ && !error
+ && (name = get_tv_string_chk(&argvars[0])) != NULL
+ && !error)
+ buf = buflist_new(name, NULL, (linenr_T)1, 0);
+
+ if (buf != NULL)
+ rettv->vval.v_number = buf->b_fnum;
+ else
+ rettv->vval.v_number = -1;
+}
+
+/*
+ * "bufwinnr(nr)" function
+ */
+static void f_bufwinnr(typval_T *argvars, typval_T *rettv)
+{
+ win_T *wp;
+ int winnr = 0;
+ buf_T *buf;
+
+ (void)get_tv_number(&argvars[0]); /* issue errmsg if type error */
+ ++emsg_off;
+ buf = get_buf_tv(&argvars[0], TRUE);
+ for (wp = firstwin; wp; wp = wp->w_next) {
+ ++winnr;
+ if (wp->w_buffer == buf)
+ break;
+ }
+ rettv->vval.v_number = (wp != NULL ? winnr : -1);
+ --emsg_off;
+}
+
+/*
+ * "byte2line(byte)" function
+ */
+static void f_byte2line(typval_T *argvars, typval_T *rettv)
+{
+ long boff = 0;
+
+ boff = get_tv_number(&argvars[0]) - 1; /* boff gets -1 on type error */
+ if (boff < 0)
+ rettv->vval.v_number = -1;
+ else
+ rettv->vval.v_number = ml_find_line_or_offset(curbuf,
+ (linenr_T)0, &boff);
+}
+
+static void byteidx(typval_T *argvars, typval_T *rettv, int comp)
+{
+ char_u *t;
+ char_u *str;
+ long idx;
+
+ str = get_tv_string_chk(&argvars[0]);
+ idx = get_tv_number_chk(&argvars[1], NULL);
+ rettv->vval.v_number = -1;
+ if (str == NULL || idx < 0)
+ return;
+
+ t = str;
+ for (; idx > 0; idx--) {
+ if (*t == NUL) /* EOL reached */
+ return;
+ if (enc_utf8 && comp)
+ t += utf_ptr2len(t);
+ else
+ t += (*mb_ptr2len)(t);
+ }
+ rettv->vval.v_number = (varnumber_T)(t - str);
+}
+
+/*
+ * "byteidx()" function
+ */
+static void f_byteidx(typval_T *argvars, typval_T *rettv)
+{
+ byteidx(argvars, rettv, FALSE);
+}
+
+/*
+ * "byteidxcomp()" function
+ */
+static void f_byteidxcomp(typval_T *argvars, typval_T *rettv)
+{
+ byteidx(argvars, rettv, TRUE);
+}
+
+int func_call(char_u *name, typval_T *args, dict_T *selfdict, typval_T *rettv)
+{
+ listitem_T *item;
+ typval_T argv[MAX_FUNC_ARGS + 1];
+ int argc = 0;
+ int dummy;
+ int r = 0;
+
+ for (item = args->vval.v_list->lv_first; item != NULL;
+ item = item->li_next) {
+ if (argc == MAX_FUNC_ARGS) {
+ EMSG(_("E699: Too many arguments"));
+ break;
+ }
+ /* Make a copy of each argument. This is needed to be able to set
+ * v_lock to VAR_FIXED in the copy without changing the original list.
+ */
+ copy_tv(&item->li_tv, &argv[argc++]);
+ }
+
+ if (item == NULL)
+ r = call_func(name, (int)STRLEN(name), rettv, argc, argv,
+ curwin->w_cursor.lnum, curwin->w_cursor.lnum,
+ &dummy, TRUE, selfdict);
+
+ /* Free the arguments. */
+ while (argc > 0)
+ clear_tv(&argv[--argc]);
+
+ return r;
+}
+
+/*
+ * "call(func, arglist)" function
+ */
+static void f_call(typval_T *argvars, typval_T *rettv)
+{
+ char_u *func;
+ dict_T *selfdict = NULL;
+
+ if (argvars[1].v_type != VAR_LIST) {
+ EMSG(_(e_listreq));
+ return;
+ }
+ if (argvars[1].vval.v_list == NULL)
+ return;
+
+ if (argvars[0].v_type == VAR_FUNC)
+ func = argvars[0].vval.v_string;
+ else
+ func = get_tv_string(&argvars[0]);
+ if (*func == NUL)
+ return; /* type error or empty name */
+
+ if (argvars[2].v_type != VAR_UNKNOWN) {
+ if (argvars[2].v_type != VAR_DICT) {
+ EMSG(_(e_dictreq));
+ return;
+ }
+ selfdict = argvars[2].vval.v_dict;
+ }
+
+ (void)func_call(func, &argvars[1], selfdict, rettv);
+}
+
+/*
+ * "ceil({float})" function
+ */
+static void f_ceil(typval_T *argvars, typval_T *rettv)
+{
+ float_T f;
+
+ rettv->v_type = VAR_FLOAT;
+ if (get_float_arg(argvars, &f) == OK)
+ rettv->vval.v_float = ceil(f);
+ else
+ rettv->vval.v_float = 0.0;
+}
+
+/*
+ * "changenr()" function
+ */
+static void f_changenr(typval_T *argvars, typval_T *rettv)
+{
+ rettv->vval.v_number = curbuf->b_u_seq_cur;
+}
+
+/*
+ * "char2nr(string)" function
+ */
+static void f_char2nr(typval_T *argvars, typval_T *rettv)
+{
+ if (has_mbyte) {
+ int utf8 = 0;
+
+ if (argvars[1].v_type != VAR_UNKNOWN)
+ utf8 = get_tv_number_chk(&argvars[1], NULL);
+
+ if (utf8)
+ rettv->vval.v_number = (*utf_ptr2char)(get_tv_string(&argvars[0]));
+ else
+ rettv->vval.v_number = (*mb_ptr2char)(get_tv_string(&argvars[0]));
+ } else
+ rettv->vval.v_number = get_tv_string(&argvars[0])[0];
+}
+
+/*
+ * "cindent(lnum)" function
+ */
+static void f_cindent(typval_T *argvars, typval_T *rettv)
+{
+ pos_T pos;
+ linenr_T lnum;
+
+ pos = curwin->w_cursor;
+ lnum = get_tv_lnum(argvars);
+ if (lnum >= 1 && lnum <= curbuf->b_ml.ml_line_count) {
+ curwin->w_cursor.lnum = lnum;
+ rettv->vval.v_number = get_c_indent();
+ curwin->w_cursor = pos;
+ } else
+ rettv->vval.v_number = -1;
+}
+
+/*
+ * "clearmatches()" function
+ */
+static void f_clearmatches(typval_T *argvars, typval_T *rettv)
+{
+ clear_matches(curwin);
+}
+
+/*
+ * "col(string)" function
+ */
+static void f_col(typval_T *argvars, typval_T *rettv)
+{
+ colnr_T col = 0;
+ pos_T *fp;
+ int fnum = curbuf->b_fnum;
+
+ fp = var2fpos(&argvars[0], FALSE, &fnum);
+ if (fp != NULL && fnum == curbuf->b_fnum) {
+ if (fp->col == MAXCOL) {
+ /* '> can be MAXCOL, get the length of the line then */
+ if (fp->lnum <= curbuf->b_ml.ml_line_count)
+ col = (colnr_T)STRLEN(ml_get(fp->lnum)) + 1;
+ else
+ col = MAXCOL;
+ } else {
+ col = fp->col + 1;
+ /* col(".") when the cursor is on the NUL at the end of the line
+ * because of "coladd" can be seen as an extra column. */
+ if (virtual_active() && fp == &curwin->w_cursor) {
+ char_u *p = ml_get_cursor();
+
+ if (curwin->w_cursor.coladd >= (colnr_T)chartabsize(p,
+ curwin->w_virtcol - curwin->w_cursor.coladd)) {
+ int l;
+
+ if (*p != NUL && p[(l = (*mb_ptr2len)(p))] == NUL)
+ col += l;
+ }
+ }
+ }
+ }
+ rettv->vval.v_number = col;
+}
+
+/*
+ * "complete()" function
+ */
+static void f_complete(typval_T *argvars, typval_T *rettv)
+{
+ int startcol;
+
+ if ((State & INSERT) == 0) {
+ EMSG(_("E785: complete() can only be used in Insert mode"));
+ return;
+ }
+
+ /* Check for undo allowed here, because if something was already inserted
+ * the line was already saved for undo and this check isn't done. */
+ if (!undo_allowed())
+ return;
+
+ if (argvars[1].v_type != VAR_LIST || argvars[1].vval.v_list == NULL) {
+ EMSG(_(e_invarg));
+ return;
+ }
+
+ startcol = get_tv_number_chk(&argvars[0], NULL);
+ if (startcol <= 0)
+ return;
+
+ set_completion(startcol - 1, argvars[1].vval.v_list);
+}
+
+/*
+ * "complete_add()" function
+ */
+static void f_complete_add(typval_T *argvars, typval_T *rettv)
+{
+ rettv->vval.v_number = ins_compl_add_tv(&argvars[0], 0);
+}
+
+/*
+ * "complete_check()" function
+ */
+static void f_complete_check(typval_T *argvars, typval_T *rettv)
+{
+ int saved = RedrawingDisabled;
+
+ RedrawingDisabled = 0;
+ ins_compl_check_keys(0);
+ rettv->vval.v_number = compl_interrupted;
+ RedrawingDisabled = saved;
+}
+
+/*
+ * "confirm(message, buttons[, default [, type]])" function
+ */
+static void f_confirm(typval_T *argvars, typval_T *rettv)
+{
+ char_u *message;
+ char_u *buttons = NULL;
+ char_u buf[NUMBUFLEN];
+ char_u buf2[NUMBUFLEN];
+ int def = 1;
+ int type = VIM_GENERIC;
+ char_u *typestr;
+ int error = FALSE;
+
+ message = get_tv_string_chk(&argvars[0]);
+ if (message == NULL)
+ error = TRUE;
+ if (argvars[1].v_type != VAR_UNKNOWN) {
+ buttons = get_tv_string_buf_chk(&argvars[1], buf);
+ if (buttons == NULL)
+ error = TRUE;
+ if (argvars[2].v_type != VAR_UNKNOWN) {
+ def = get_tv_number_chk(&argvars[2], &error);
+ if (argvars[3].v_type != VAR_UNKNOWN) {
+ typestr = get_tv_string_buf_chk(&argvars[3], buf2);
+ if (typestr == NULL)
+ error = TRUE;
+ else {
+ switch (TOUPPER_ASC(*typestr)) {
+ case 'E': type = VIM_ERROR; break;
+ case 'Q': type = VIM_QUESTION; break;
+ case 'I': type = VIM_INFO; break;
+ case 'W': type = VIM_WARNING; break;
+ case 'G': type = VIM_GENERIC; break;
+ }
+ }
+ }
+ }
+ }
+
+ if (buttons == NULL || *buttons == NUL)
+ buttons = (char_u *)_("&Ok");
+
+ if (!error)
+ rettv->vval.v_number = do_dialog(type, NULL, message, buttons,
+ def, NULL, FALSE);
+}
+
+/*
+ * "copy()" function
+ */
+static void f_copy(typval_T *argvars, typval_T *rettv)
+{
+ item_copy(&argvars[0], rettv, FALSE, 0);
+}
+
+/*
+ * "cos()" function
+ */
+static void f_cos(typval_T *argvars, typval_T *rettv)
+{
+ float_T f;
+
+ rettv->v_type = VAR_FLOAT;
+ if (get_float_arg(argvars, &f) == OK)
+ rettv->vval.v_float = cos(f);
+ else
+ rettv->vval.v_float = 0.0;
+}
+
+/*
+ * "cosh()" function
+ */
+static void f_cosh(typval_T *argvars, typval_T *rettv)
+{
+ float_T f;
+
+ rettv->v_type = VAR_FLOAT;
+ if (get_float_arg(argvars, &f) == OK)
+ rettv->vval.v_float = cosh(f);
+ else
+ rettv->vval.v_float = 0.0;
+}
+
+/*
+ * "count()" function
+ */
+static void f_count(typval_T *argvars, typval_T *rettv)
+{
+ long n = 0;
+ int ic = FALSE;
+
+ if (argvars[0].v_type == VAR_LIST) {
+ listitem_T *li;
+ list_T *l;
+ long idx;
+
+ if ((l = argvars[0].vval.v_list) != NULL) {
+ li = l->lv_first;
+ if (argvars[2].v_type != VAR_UNKNOWN) {
+ int error = FALSE;
+
+ ic = get_tv_number_chk(&argvars[2], &error);
+ if (argvars[3].v_type != VAR_UNKNOWN) {
+ idx = get_tv_number_chk(&argvars[3], &error);
+ if (!error) {
+ li = list_find(l, idx);
+ if (li == NULL)
+ EMSGN(_(e_listidx), idx);
+ }
+ }
+ if (error)
+ li = NULL;
+ }
+
+ for (; li != NULL; li = li->li_next)
+ if (tv_equal(&li->li_tv, &argvars[1], ic, FALSE))
+ ++n;
+ }
+ } else if (argvars[0].v_type == VAR_DICT) {
+ int todo;
+ dict_T *d;
+ hashitem_T *hi;
+
+ if ((d = argvars[0].vval.v_dict) != NULL) {
+ int error = FALSE;
+
+ if (argvars[2].v_type != VAR_UNKNOWN) {
+ ic = get_tv_number_chk(&argvars[2], &error);
+ if (argvars[3].v_type != VAR_UNKNOWN)
+ EMSG(_(e_invarg));
+ }
+
+ todo = error ? 0 : (int)d->dv_hashtab.ht_used;
+ for (hi = d->dv_hashtab.ht_array; todo > 0; ++hi) {
+ if (!HASHITEM_EMPTY(hi)) {
+ --todo;
+ if (tv_equal(&HI2DI(hi)->di_tv, &argvars[1], ic, FALSE))
+ ++n;
+ }
+ }
+ }
+ } else
+ EMSG2(_(e_listdictarg), "count()");
+ rettv->vval.v_number = n;
+}
+
+/*
+ * "cscope_connection([{num} , {dbpath} [, {prepend}]])" function
+ *
+ * Checks the existence of a cscope connection.
+ */
+static void f_cscope_connection(typval_T *argvars, typval_T *rettv)
+{
+ int num = 0;
+ char_u *dbpath = NULL;
+ char_u *prepend = NULL;
+ char_u buf[NUMBUFLEN];
+
+ if (argvars[0].v_type != VAR_UNKNOWN
+ && argvars[1].v_type != VAR_UNKNOWN) {
+ num = (int)get_tv_number(&argvars[0]);
+ dbpath = get_tv_string(&argvars[1]);
+ if (argvars[2].v_type != VAR_UNKNOWN)
+ prepend = get_tv_string_buf(&argvars[2], buf);
+ }
+
+ rettv->vval.v_number = cs_connection(num, dbpath, prepend);
+}
+
+/*
+ * "cursor(lnum, col)" function
+ *
+ * Moves the cursor to the specified line and column.
+ * Returns 0 when the position could be set, -1 otherwise.
+ */
+static void f_cursor(typval_T *argvars, typval_T *rettv)
+{
+ long line, col;
+ long coladd = 0;
+
+ rettv->vval.v_number = -1;
+ if (argvars[1].v_type == VAR_UNKNOWN) {
+ pos_T pos;
+
+ if (list2fpos(argvars, &pos, NULL) == FAIL)
+ return;
+ line = pos.lnum;
+ col = pos.col;
+ coladd = pos.coladd;
+ } else {
+ line = get_tv_lnum(argvars);
+ col = get_tv_number_chk(&argvars[1], NULL);
+ if (argvars[2].v_type != VAR_UNKNOWN)
+ coladd = get_tv_number_chk(&argvars[2], NULL);
+ }
+ if (line < 0 || col < 0
+ || coladd < 0
+ )
+ return; /* type error; errmsg already given */
+ if (line > 0)
+ curwin->w_cursor.lnum = line;
+ if (col > 0)
+ curwin->w_cursor.col = col - 1;
+ curwin->w_cursor.coladd = coladd;
+
+ /* Make sure the cursor is in a valid position. */
+ check_cursor();
+ /* Correct cursor for multi-byte character. */
+ if (has_mbyte)
+ mb_adjust_cursor();
+
+ curwin->w_set_curswant = TRUE;
+ rettv->vval.v_number = 0;
+}
+
+/*
+ * "deepcopy()" function
+ */
+static void f_deepcopy(typval_T *argvars, typval_T *rettv)
+{
+ int noref = 0;
+
+ if (argvars[1].v_type != VAR_UNKNOWN)
+ noref = get_tv_number_chk(&argvars[1], NULL);
+ if (noref < 0 || noref > 1)
+ EMSG(_(e_invarg));
+ else {
+ current_copyID += COPYID_INC;
+ item_copy(&argvars[0], rettv, TRUE, noref == 0 ? current_copyID : 0);
+ }
+}
+
+/*
+ * "delete()" function
+ */
+static void f_delete(typval_T *argvars, typval_T *rettv)
+{
+ if (check_restricted() || check_secure())
+ rettv->vval.v_number = -1;
+ else
+ rettv->vval.v_number = os_remove((char *)get_tv_string(&argvars[0]));
+}
+
+/*
+ * "did_filetype()" function
+ */
+static void f_did_filetype(typval_T *argvars, typval_T *rettv)
+{
+ rettv->vval.v_number = did_filetype;
+}
+
+/*
+ * "diff_filler()" function
+ */
+static void f_diff_filler(typval_T *argvars, typval_T *rettv)
+{
+ rettv->vval.v_number = diff_check_fill(curwin, get_tv_lnum(argvars));
+}
+
+/*
+ * "diff_hlID()" function
+ */
+static void f_diff_hlID(typval_T *argvars, typval_T *rettv)
+{
+ linenr_T lnum = get_tv_lnum(argvars);
+ static linenr_T prev_lnum = 0;
+ static int changedtick = 0;
+ static int fnum = 0;
+ static int change_start = 0;
+ static int change_end = 0;
+ static hlf_T hlID = (hlf_T)0;
+ int filler_lines;
+ int col;
+
+ if (lnum < 0) /* ignore type error in {lnum} arg */
+ lnum = 0;
+ if (lnum != prev_lnum
+ || changedtick != curbuf->b_changedtick
+ || fnum != curbuf->b_fnum) {
+ /* New line, buffer, change: need to get the values. */
+ filler_lines = diff_check(curwin, lnum);
+ if (filler_lines < 0) {
+ if (filler_lines == -1) {
+ change_start = MAXCOL;
+ change_end = -1;
+ if (diff_find_change(curwin, lnum, &change_start, &change_end))
+ hlID = HLF_ADD; /* added line */
+ else
+ hlID = HLF_CHD; /* changed line */
+ } else
+ hlID = HLF_ADD; /* added line */
+ } else
+ hlID = (hlf_T)0;
+ prev_lnum = lnum;
+ changedtick = curbuf->b_changedtick;
+ fnum = curbuf->b_fnum;
+ }
+
+ if (hlID == HLF_CHD || hlID == HLF_TXD) {
+ col = get_tv_number(&argvars[1]) - 1; /* ignore type error in {col} */
+ if (col >= change_start && col <= change_end)
+ hlID = HLF_TXD; /* changed text */
+ else
+ hlID = HLF_CHD; /* changed line */
+ }
+ rettv->vval.v_number = hlID == (hlf_T)0 ? 0 : (int)hlID;
+}
+
+/*
+ * "empty({expr})" function
+ */
+static void f_empty(typval_T *argvars, typval_T *rettv)
+{
+ int n;
+
+ switch (argvars[0].v_type) {
+ case VAR_STRING:
+ case VAR_FUNC:
+ n = argvars[0].vval.v_string == NULL
+ || *argvars[0].vval.v_string == NUL;
+ break;
+ case VAR_NUMBER:
+ n = argvars[0].vval.v_number == 0;
+ break;
+ case VAR_FLOAT:
+ n = argvars[0].vval.v_float == 0.0;
+ break;
+ case VAR_LIST:
+ n = argvars[0].vval.v_list == NULL
+ || argvars[0].vval.v_list->lv_first == NULL;
+ break;
+ case VAR_DICT:
+ n = argvars[0].vval.v_dict == NULL
+ || argvars[0].vval.v_dict->dv_hashtab.ht_used == 0;
+ break;
+ default:
+ EMSG2(_(e_intern2), "f_empty()");
+ n = 0;
+ }
+
+ rettv->vval.v_number = n;
+}
+
+/*
+ * "escape({string}, {chars})" function
+ */
+static void f_escape(typval_T *argvars, typval_T *rettv)
+{
+ char_u buf[NUMBUFLEN];
+
+ rettv->vval.v_string = vim_strsave_escaped(get_tv_string(&argvars[0]),
+ get_tv_string_buf(&argvars[1], buf));
+ rettv->v_type = VAR_STRING;
+}
+
+/*
+ * "eval()" function
+ */
+static void f_eval(typval_T *argvars, typval_T *rettv)
+{
+ char_u *s;
+
+ s = get_tv_string_chk(&argvars[0]);
+ if (s != NULL)
+ s = skipwhite(s);
+
+ if (s == NULL || eval1(&s, rettv, TRUE) == FAIL) {
+ rettv->v_type = VAR_NUMBER;
+ rettv->vval.v_number = 0;
+ } else if (*s != NUL)
+ EMSG(_(e_trailing));
+}
+
+/*
+ * "eventhandler()" function
+ */
+static void f_eventhandler(typval_T *argvars, typval_T *rettv)
+{
+ rettv->vval.v_number = vgetc_busy;
+}
+
+/*
+ * "executable()" function
+ */
+static void f_executable(typval_T *argvars, typval_T *rettv)
+{
+ rettv->vval.v_number = os_can_exe(get_tv_string(&argvars[0]));
+}
+
+/*
+ * "exists()" function
+ */
+static void f_exists(typval_T *argvars, typval_T *rettv)
+{
+ char_u *p;
+ char_u *name;
+ int n = FALSE;
+ int len = 0;
+
+ p = get_tv_string(&argvars[0]);
+ if (*p == '$') { /* environment variable */
+ /* first try "normal" environment variables (fast) */
+ if (os_getenv((char *)(p + 1)) != NULL)
+ n = TRUE;
+ else {
+ /* try expanding things like $VIM and ${HOME} */
+ p = expand_env_save(p);
+ if (p != NULL && *p != '$')
+ n = TRUE;
+ free(p);
+ }
+ } else if (*p == '&' || *p == '+') { /* option */
+ n = (get_option_tv(&p, NULL, TRUE) == OK);
+ if (*skipwhite(p) != NUL)
+ n = FALSE; /* trailing garbage */
+ } else if (*p == '*') { /* internal or user defined function */
+ n = function_exists(p + 1);
+ } else if (*p == ':') {
+ n = cmd_exists(p + 1);
+ } else if (*p == '#') {
+ if (p[1] == '#')
+ n = autocmd_supported(p + 2);
+ else
+ n = au_exists(p + 1);
+ } else { /* internal variable */
+ char_u *tofree;
+ typval_T tv;
+
+ /* get_name_len() takes care of expanding curly braces */
+ name = p;
+ len = get_name_len(&p, &tofree, TRUE, FALSE);
+ if (len > 0) {
+ if (tofree != NULL)
+ name = tofree;
+ n = (get_var_tv(name, len, &tv, FALSE, TRUE) == OK);
+ if (n) {
+ /* handle d.key, l[idx], f(expr) */
+ n = (handle_subscript(&p, &tv, TRUE, FALSE) == OK);
+ if (n)
+ clear_tv(&tv);
+ }
+ }
+ if (*p != NUL)
+ n = FALSE;
+
+ free(tofree);
+ }
+
+ rettv->vval.v_number = n;
+}
+
+/*
+ * "exp()" function
+ */
+static void f_exp(typval_T *argvars, typval_T *rettv)
+{
+ float_T f;
+
+ rettv->v_type = VAR_FLOAT;
+ if (get_float_arg(argvars, &f) == OK)
+ rettv->vval.v_float = exp(f);
+ else
+ rettv->vval.v_float = 0.0;
+}
+
+/*
+ * "expand()" function
+ */
+static void f_expand(typval_T *argvars, typval_T *rettv)
+{
+ char_u *s;
+ int len;
+ char_u *errormsg;
+ int options = WILD_SILENT|WILD_USE_NL|WILD_LIST_NOTFOUND;
+ expand_T xpc;
+ int error = FALSE;
+ char_u *result;
+
+ rettv->v_type = VAR_STRING;
+ if (argvars[1].v_type != VAR_UNKNOWN
+ && argvars[2].v_type != VAR_UNKNOWN
+ && get_tv_number_chk(&argvars[2], &error)
+ && !error) {
+ rettv->v_type = VAR_LIST;
+ rettv->vval.v_list = NULL;
+ }
+
+ s = get_tv_string(&argvars[0]);
+ if (*s == '%' || *s == '#' || *s == '<') {
+ ++emsg_off;
+ result = eval_vars(s, s, &len, NULL, &errormsg, NULL);
+ --emsg_off;
+ if (rettv->v_type == VAR_LIST) {
+ rettv_list_alloc(rettv);
+ if (result != NULL) {
+ list_append_string(rettv->vval.v_list, result, -1);
+ }
+ } else
+ rettv->vval.v_string = result;
+ } else {
+ /* When the optional second argument is non-zero, don't remove matches
+ * for 'wildignore' and don't put matches for 'suffixes' at the end. */
+ if (argvars[1].v_type != VAR_UNKNOWN
+ && get_tv_number_chk(&argvars[1], &error))
+ options |= WILD_KEEP_ALL;
+ if (!error) {
+ ExpandInit(&xpc);
+ xpc.xp_context = EXPAND_FILES;
+ if (p_wic)
+ options += WILD_ICASE;
+ if (rettv->v_type == VAR_STRING)
+ rettv->vval.v_string = ExpandOne(&xpc, s, NULL,
+ options, WILD_ALL);
+ else {
+ rettv_list_alloc(rettv);
+ ExpandOne(&xpc, s, NULL, options, WILD_ALL_KEEP);
+ for (int i = 0; i < xpc.xp_numfiles; i++) {
+ list_append_string(rettv->vval.v_list, xpc.xp_files[i], -1);
+ }
+ ExpandCleanup(&xpc);
+ }
+ } else
+ rettv->vval.v_string = NULL;
+ }
+}
+
+/*
+ * Go over all entries in "d2" and add them to "d1".
+ * When "action" is "error" then a duplicate key is an error.
+ * When "action" is "force" then a duplicate key is overwritten.
+ * Otherwise duplicate keys are ignored ("action" is "keep").
+ */
+void dict_extend(dict_T *d1, dict_T *d2, char_u *action)
+{
+ dictitem_T *di1;
+ hashitem_T *hi2;
+ int todo;
+
+ todo = (int)d2->dv_hashtab.ht_used;
+ for (hi2 = d2->dv_hashtab.ht_array; todo > 0; ++hi2) {
+ if (!HASHITEM_EMPTY(hi2)) {
+ --todo;
+ di1 = dict_find(d1, hi2->hi_key, -1);
+ if (d1->dv_scope != 0) {
+ /* Disallow replacing a builtin function in l: and g:.
+ * Check the key to be valid when adding to any
+ * scope. */
+ if (d1->dv_scope == VAR_DEF_SCOPE
+ && HI2DI(hi2)->di_tv.v_type == VAR_FUNC
+ && var_check_func_name(hi2->hi_key,
+ di1 == NULL))
+ break;
+ if (!valid_varname(hi2->hi_key))
+ break;
+ }
+ if (di1 == NULL) {
+ di1 = dictitem_copy(HI2DI(hi2));
+ if (di1 != NULL && dict_add(d1, di1) == FAIL)
+ dictitem_free(di1);
+ } else if (*action == 'e') {
+ EMSG2(_("E737: Key already exists: %s"), hi2->hi_key);
+ break;
+ } else if (*action == 'f' && HI2DI(hi2) != di1) {
+ clear_tv(&di1->di_tv);
+ copy_tv(&HI2DI(hi2)->di_tv, &di1->di_tv);
+ }
+ }
+ }
+}
+
+/*
+ * "extend(list, list [, idx])" function
+ * "extend(dict, dict [, action])" function
+ */
+static void f_extend(typval_T *argvars, typval_T *rettv)
+{
+ char *arg_errmsg = N_("extend() argument");
+
+ if (argvars[0].v_type == VAR_LIST && argvars[1].v_type == VAR_LIST) {
+ list_T *l1, *l2;
+ listitem_T *item;
+ long before;
+ int error = FALSE;
+
+ l1 = argvars[0].vval.v_list;
+ l2 = argvars[1].vval.v_list;
+ if (l1 != NULL && !tv_check_lock(l1->lv_lock, (char_u *)_(arg_errmsg))
+ && l2 != NULL) {
+ if (argvars[2].v_type != VAR_UNKNOWN) {
+ before = get_tv_number_chk(&argvars[2], &error);
+ if (error)
+ return; /* type error; errmsg already given */
+
+ if (before == l1->lv_len)
+ item = NULL;
+ else {
+ item = list_find(l1, before);
+ if (item == NULL) {
+ EMSGN(_(e_listidx), before);
+ return;
+ }
+ }
+ } else
+ item = NULL;
+ list_extend(l1, l2, item);
+
+ copy_tv(&argvars[0], rettv);
+ }
+ } else if (argvars[0].v_type == VAR_DICT && argvars[1].v_type ==
+ VAR_DICT) {
+ dict_T *d1, *d2;
+ char_u *action;
+ int i;
+
+ d1 = argvars[0].vval.v_dict;
+ d2 = argvars[1].vval.v_dict;
+ if (d1 != NULL && !tv_check_lock(d1->dv_lock, (char_u *)_(arg_errmsg))
+ && d2 != NULL) {
+ /* Check the third argument. */
+ if (argvars[2].v_type != VAR_UNKNOWN) {
+ static char *(av[]) = {"keep", "force", "error"};
+
+ action = get_tv_string_chk(&argvars[2]);
+ if (action == NULL)
+ return; /* type error; errmsg already given */
+ for (i = 0; i < 3; ++i)
+ if (STRCMP(action, av[i]) == 0)
+ break;
+ if (i == 3) {
+ EMSG2(_(e_invarg2), action);
+ return;
+ }
+ } else
+ action = (char_u *)"force";
+
+ dict_extend(d1, d2, action);
+
+ copy_tv(&argvars[0], rettv);
+ }
+ } else
+ EMSG2(_(e_listdictarg), "extend()");
+}
+
+/*
+ * "feedkeys()" function
+ */
+static void f_feedkeys(typval_T *argvars, typval_T *rettv)
+{
+ int remap = TRUE;
+ char_u *keys, *flags;
+ char_u nbuf[NUMBUFLEN];
+ int typed = FALSE;
+ char_u *keys_esc;
+
+ /* This is not allowed in the sandbox. If the commands would still be
+ * executed in the sandbox it would be OK, but it probably happens later,
+ * when "sandbox" is no longer set. */
+ if (check_secure())
+ return;
+
+ keys = get_tv_string(&argvars[0]);
+ if (*keys != NUL) {
+ if (argvars[1].v_type != VAR_UNKNOWN) {
+ flags = get_tv_string_buf(&argvars[1], nbuf);
+ for (; *flags != NUL; ++flags) {
+ switch (*flags) {
+ case 'n': remap = FALSE; break;
+ case 'm': remap = TRUE; break;
+ case 't': typed = TRUE; break;
+ }
+ }
+ }
+
+ /* Need to escape K_SPECIAL and CSI before putting the string in the
+ * typeahead buffer. */
+ keys_esc = vim_strsave_escape_csi(keys);
+ if (keys_esc != NULL) {
+ ins_typebuf(keys_esc, (remap ? REMAP_YES : REMAP_NONE),
+ typebuf.tb_len, !typed, FALSE);
+ free(keys_esc);
+ if (vgetc_busy)
+ typebuf_was_filled = TRUE;
+ }
+ }
+}
+
+/*
+ * "filereadable()" function
+ */
+static void f_filereadable(typval_T *argvars, typval_T *rettv)
+{
+ int fd;
+ char_u *p;
+ int n;
+
+#ifndef O_NONBLOCK
+# define O_NONBLOCK 0
+#endif
+ p = get_tv_string(&argvars[0]);
+ if (*p && !os_isdir(p) && (fd = mch_open((char *)p,
+ O_RDONLY | O_NONBLOCK, 0)) >= 0) {
+ n = TRUE;
+ close(fd);
+ } else
+ n = FALSE;
+
+ rettv->vval.v_number = n;
+}
+
+/*
+ * Return 0 for not writable, 1 for writable file, 2 for a dir which we have
+ * rights to write into.
+ */
+static void f_filewritable(typval_T *argvars, typval_T *rettv)
+{
+ char *filename = (char *)get_tv_string(&argvars[0]);
+ rettv->vval.v_number = os_file_is_writable(filename);
+}
+
+static void findfilendir(typval_T *argvars, typval_T *rettv,
+ int find_what);
+
+static void findfilendir(typval_T *argvars, typval_T *rettv, int find_what)
+{
+ char_u *fname;
+ char_u *fresult = NULL;
+ char_u *path = *curbuf->b_p_path == NUL ? p_path : curbuf->b_p_path;
+ char_u *p;
+ char_u pathbuf[NUMBUFLEN];
+ int count = 1;
+ int first = TRUE;
+ int error = FALSE;
+
+ rettv->vval.v_string = NULL;
+ rettv->v_type = VAR_STRING;
+
+ fname = get_tv_string(&argvars[0]);
+
+ if (argvars[1].v_type != VAR_UNKNOWN) {
+ p = get_tv_string_buf_chk(&argvars[1], pathbuf);
+ if (p == NULL)
+ error = TRUE;
+ else {
+ if (*p != NUL)
+ path = p;
+
+ if (argvars[2].v_type != VAR_UNKNOWN)
+ count = get_tv_number_chk(&argvars[2], &error);
+ }
+ }
+
+ if (count < 0) {
+ rettv_list_alloc(rettv);
+ }
+
+ if (*fname != NUL && !error) {
+ do {
+ if (rettv->v_type == VAR_STRING || rettv->v_type == VAR_LIST)
+ free(fresult);
+ fresult = find_file_in_path_option(first ? fname : NULL,
+ first ? (int)STRLEN(fname) : 0,
+ 0, first, path,
+ find_what,
+ curbuf->b_ffname,
+ find_what == FINDFILE_DIR
+ ? (char_u *)"" : curbuf->b_p_sua);
+ first = FALSE;
+
+ if (fresult != NULL && rettv->v_type == VAR_LIST)
+ list_append_string(rettv->vval.v_list, fresult, -1);
+
+ } while ((rettv->v_type == VAR_LIST || --count > 0) && fresult != NULL);
+ }
+
+ if (rettv->v_type == VAR_STRING)
+ rettv->vval.v_string = fresult;
+}
+
+static void filter_map(typval_T *argvars, typval_T *rettv, int map);
+static int filter_map_one(typval_T *tv, char_u *expr, int map, int *remp);
+
+/*
+ * Implementation of map() and filter().
+ */
+static void filter_map(typval_T *argvars, typval_T *rettv, int map)
+{
+ char_u buf[NUMBUFLEN];
+ char_u *expr;
+ listitem_T *li, *nli;
+ list_T *l = NULL;
+ dictitem_T *di;
+ hashtab_T *ht;
+ hashitem_T *hi;
+ dict_T *d = NULL;
+ typval_T save_val;
+ typval_T save_key;
+ int rem;
+ int todo;
+ char_u *ermsg = (char_u *)(map ? "map()" : "filter()");
+ char *arg_errmsg = (map ? N_("map() argument")
+ : N_("filter() argument"));
+ int save_did_emsg;
+ int idx = 0;
+
+ if (argvars[0].v_type == VAR_LIST) {
+ if ((l = argvars[0].vval.v_list) == NULL
+ || tv_check_lock(l->lv_lock, (char_u *)_(arg_errmsg)))
+ return;
+ } else if (argvars[0].v_type == VAR_DICT) {
+ if ((d = argvars[0].vval.v_dict) == NULL
+ || tv_check_lock(d->dv_lock, (char_u *)_(arg_errmsg)))
+ return;
+ } else {
+ EMSG2(_(e_listdictarg), ermsg);
+ return;
+ }
+
+ expr = get_tv_string_buf_chk(&argvars[1], buf);
+ /* On type errors, the preceding call has already displayed an error
+ * message. Avoid a misleading error message for an empty string that
+ * was not passed as argument. */
+ if (expr != NULL) {
+ prepare_vimvar(VV_VAL, &save_val);
+ expr = skipwhite(expr);
+
+ /* We reset "did_emsg" to be able to detect whether an error
+ * occurred during evaluation of the expression. */
+ save_did_emsg = did_emsg;
+ did_emsg = FALSE;
+
+ prepare_vimvar(VV_KEY, &save_key);
+ if (argvars[0].v_type == VAR_DICT) {
+ vimvars[VV_KEY].vv_type = VAR_STRING;
+
+ ht = &d->dv_hashtab;
+ hash_lock(ht);
+ todo = (int)ht->ht_used;
+ for (hi = ht->ht_array; todo > 0; ++hi) {
+ if (!HASHITEM_EMPTY(hi)) {
+ --todo;
+ di = HI2DI(hi);
+ if (tv_check_lock(di->di_tv.v_lock,
+ (char_u *)_(arg_errmsg)))
+ break;
+ vimvars[VV_KEY].vv_str = vim_strsave(di->di_key);
+ if (filter_map_one(&di->di_tv, expr, map, &rem) == FAIL
+ || did_emsg)
+ break;
+ if (!map && rem)
+ dictitem_remove(d, di);
+ clear_tv(&vimvars[VV_KEY].vv_tv);
+ }
+ }
+ hash_unlock(ht);
+ } else {
+ vimvars[VV_KEY].vv_type = VAR_NUMBER;
+
+ for (li = l->lv_first; li != NULL; li = nli) {
+ if (tv_check_lock(li->li_tv.v_lock, (char_u *)_(arg_errmsg)))
+ break;
+ nli = li->li_next;
+ vimvars[VV_KEY].vv_nr = idx;
+ if (filter_map_one(&li->li_tv, expr, map, &rem) == FAIL
+ || did_emsg)
+ break;
+ if (!map && rem)
+ listitem_remove(l, li);
+ ++idx;
+ }
+ }
+
+ restore_vimvar(VV_KEY, &save_key);
+ restore_vimvar(VV_VAL, &save_val);
+
+ did_emsg |= save_did_emsg;
+ }
+
+ copy_tv(&argvars[0], rettv);
+}
+
+static int filter_map_one(typval_T *tv, char_u *expr, int map, int *remp)
+{
+ typval_T rettv;
+ char_u *s;
+ int retval = FAIL;
+
+ copy_tv(tv, &vimvars[VV_VAL].vv_tv);
+ s = expr;
+ if (eval1(&s, &rettv, TRUE) == FAIL)
+ goto theend;
+ if (*s != NUL) { /* check for trailing chars after expr */
+ EMSG2(_(e_invexpr2), s);
+ goto theend;
+ }
+ if (map) {
+ /* map(): replace the list item value */
+ clear_tv(tv);
+ rettv.v_lock = 0;
+ *tv = rettv;
+ } else {
+ int error = FALSE;
+
+ /* filter(): when expr is zero remove the item */
+ *remp = (get_tv_number_chk(&rettv, &error) == 0);
+ clear_tv(&rettv);
+ /* On type error, nothing has been removed; return FAIL to stop the
+ * loop. The error message was given by get_tv_number_chk(). */
+ if (error)
+ goto theend;
+ }
+ retval = OK;
+theend:
+ clear_tv(&vimvars[VV_VAL].vv_tv);
+ return retval;
+}
+
+/*
+ * "filter()" function
+ */
+static void f_filter(typval_T *argvars, typval_T *rettv)
+{
+ filter_map(argvars, rettv, FALSE);
+}
+
+/*
+ * "finddir({fname}[, {path}[, {count}]])" function
+ */
+static void f_finddir(typval_T *argvars, typval_T *rettv)
+{
+ findfilendir(argvars, rettv, FINDFILE_DIR);
+}
+
+/*
+ * "findfile({fname}[, {path}[, {count}]])" function
+ */
+static void f_findfile(typval_T *argvars, typval_T *rettv)
+{
+ findfilendir(argvars, rettv, FINDFILE_FILE);
+}
+
+/*
+ * "float2nr({float})" function
+ */
+static void f_float2nr(typval_T *argvars, typval_T *rettv)
+{
+ float_T f;
+
+ if (get_float_arg(argvars, &f) == OK) {
+ if (f < -0x7fffffff)
+ rettv->vval.v_number = -0x7fffffff;
+ else if (f > 0x7fffffff)
+ rettv->vval.v_number = 0x7fffffff;
+ else
+ rettv->vval.v_number = (varnumber_T)f;
+ }
+}
+
+/*
+ * "floor({float})" function
+ */
+static void f_floor(typval_T *argvars, typval_T *rettv)
+{
+ float_T f;
+
+ rettv->v_type = VAR_FLOAT;
+ if (get_float_arg(argvars, &f) == OK)
+ rettv->vval.v_float = floor(f);
+ else
+ rettv->vval.v_float = 0.0;
+}
+
+/*
+ * "fmod()" function
+ */
+static void f_fmod(typval_T *argvars, typval_T *rettv)
+{
+ float_T fx, fy;
+
+ rettv->v_type = VAR_FLOAT;
+ if (get_float_arg(argvars, &fx) == OK
+ && get_float_arg(&argvars[1], &fy) == OK)
+ rettv->vval.v_float = fmod(fx, fy);
+ else
+ rettv->vval.v_float = 0.0;
+}
+
+/*
+ * "fnameescape({string})" function
+ */
+static void f_fnameescape(typval_T *argvars, typval_T *rettv)
+{
+ rettv->vval.v_string = vim_strsave_fnameescape(
+ get_tv_string(&argvars[0]), FALSE);
+ rettv->v_type = VAR_STRING;
+}
+
+/*
+ * "fnamemodify({fname}, {mods})" function
+ */
+static void f_fnamemodify(typval_T *argvars, typval_T *rettv)
+{
+ char_u *fname;
+ char_u *mods;
+ int usedlen = 0;
+ int len;
+ char_u *fbuf = NULL;
+ char_u buf[NUMBUFLEN];
+
+ fname = get_tv_string_chk(&argvars[0]);
+ mods = get_tv_string_buf_chk(&argvars[1], buf);
+ if (fname == NULL || mods == NULL)
+ fname = NULL;
+ else {
+ len = (int)STRLEN(fname);
+ (void)modify_fname(mods, &usedlen, &fname, &fbuf, &len);
+ }
+
+ rettv->v_type = VAR_STRING;
+ if (fname == NULL)
+ rettv->vval.v_string = NULL;
+ else
+ rettv->vval.v_string = vim_strnsave(fname, len);
+ free(fbuf);
+}
+
+static void foldclosed_both(typval_T *argvars, typval_T *rettv, int end);
+
+/*
+ * "foldclosed()" function
+ */
+static void foldclosed_both(typval_T *argvars, typval_T *rettv, int end)
+{
+ linenr_T lnum;
+ linenr_T first, last;
+
+ lnum = get_tv_lnum(argvars);
+ if (lnum >= 1 && lnum <= curbuf->b_ml.ml_line_count) {
+ if (hasFoldingWin(curwin, lnum, &first, &last, FALSE, NULL)) {
+ if (end)
+ rettv->vval.v_number = (varnumber_T)last;
+ else
+ rettv->vval.v_number = (varnumber_T)first;
+ return;
+ }
+ }
+ rettv->vval.v_number = -1;
+}
+
+/*
+ * "foldclosed()" function
+ */
+static void f_foldclosed(typval_T *argvars, typval_T *rettv)
+{
+ foldclosed_both(argvars, rettv, FALSE);
+}
+
+/*
+ * "foldclosedend()" function
+ */
+static void f_foldclosedend(typval_T *argvars, typval_T *rettv)
+{
+ foldclosed_both(argvars, rettv, TRUE);
+}
+
+/*
+ * "foldlevel()" function
+ */
+static void f_foldlevel(typval_T *argvars, typval_T *rettv)
+{
+ linenr_T lnum;
+
+ lnum = get_tv_lnum(argvars);
+ if (lnum >= 1 && lnum <= curbuf->b_ml.ml_line_count)
+ rettv->vval.v_number = foldLevel(lnum);
+}
+
+/*
+ * "foldtext()" function
+ */
+static void f_foldtext(typval_T *argvars, typval_T *rettv)
+{
+ linenr_T lnum;
+ char_u *s;
+ char_u *r;
+ int len;
+ char *txt;
+
+ rettv->v_type = VAR_STRING;
+ rettv->vval.v_string = NULL;
+ if ((linenr_T)vimvars[VV_FOLDSTART].vv_nr > 0
+ && (linenr_T)vimvars[VV_FOLDEND].vv_nr
+ <= curbuf->b_ml.ml_line_count
+ && vimvars[VV_FOLDDASHES].vv_str != NULL) {
+ /* Find first non-empty line in the fold. */
+ lnum = (linenr_T)vimvars[VV_FOLDSTART].vv_nr;
+ while (lnum < (linenr_T)vimvars[VV_FOLDEND].vv_nr) {
+ if (!linewhite(lnum))
+ break;
+ ++lnum;
+ }
+
+ /* Find interesting text in this line. */
+ s = skipwhite(ml_get(lnum));
+ /* skip C comment-start */
+ if (s[0] == '/' && (s[1] == '*' || s[1] == '/')) {
+ s = skipwhite(s + 2);
+ if (*skipwhite(s) == NUL
+ && lnum + 1 < (linenr_T)vimvars[VV_FOLDEND].vv_nr) {
+ s = skipwhite(ml_get(lnum + 1));
+ if (*s == '*')
+ s = skipwhite(s + 1);
+ }
+ }
+ txt = _("+-%s%3ld lines: ");
+ r = alloc((unsigned)(STRLEN(txt)
+ + STRLEN(vimvars[VV_FOLDDASHES].vv_str) /* for %s */
+ + 20 /* for %3ld */
+ + STRLEN(s))); /* concatenated */
+ if (r != NULL) {
+ sprintf((char *)r, txt, vimvars[VV_FOLDDASHES].vv_str,
+ (long)((linenr_T)vimvars[VV_FOLDEND].vv_nr
+ - (linenr_T)vimvars[VV_FOLDSTART].vv_nr + 1));
+ len = (int)STRLEN(r);
+ STRCAT(r, s);
+ /* remove 'foldmarker' and 'commentstring' */
+ foldtext_cleanup(r + len);
+ rettv->vval.v_string = r;
+ }
+ }
+}
+
+/*
+ * "foldtextresult(lnum)" function
+ */
+static void f_foldtextresult(typval_T *argvars, typval_T *rettv)
+{
+ linenr_T lnum;
+ char_u *text;
+ char_u buf[51];
+ foldinfo_T foldinfo;
+ int fold_count;
+
+ rettv->v_type = VAR_STRING;
+ rettv->vval.v_string = NULL;
+ lnum = get_tv_lnum(argvars);
+ /* treat illegal types and illegal string values for {lnum} the same */
+ if (lnum < 0)
+ lnum = 0;
+ fold_count = foldedCount(curwin, lnum, &foldinfo);
+ if (fold_count > 0) {
+ text = get_foldtext(curwin, lnum, lnum + fold_count - 1,
+ &foldinfo, buf);
+ if (text == buf)
+ text = vim_strsave(text);
+ rettv->vval.v_string = text;
+ }
+}
+
+/*
+ * "foreground()" function
+ */
+static void f_foreground(typval_T *argvars, typval_T *rettv)
+{
+}
+
+/*
+ * "function()" function
+ */
+static void f_function(typval_T *argvars, typval_T *rettv)
+{
+ char_u *s;
+
+ s = get_tv_string(&argvars[0]);
+ if (s == NULL || *s == NUL || VIM_ISDIGIT(*s))
+ EMSG2(_(e_invarg2), s);
+ /* Don't check an autoload name for existence here. */
+ else if (vim_strchr(s, AUTOLOAD_CHAR) == NULL && !function_exists(s))
+ EMSG2(_("E700: Unknown function: %s"), s);
+ else {
+ if (STRNCMP(s, "s:", 2) == 0 || STRNCMP(s, "<SID>", 5) == 0) {
+ char sid_buf[25];
+ int off = *s == 's' ? 2 : 5;
+
+ /* Expand s: and <SID> into <SNR>nr_, so that the function can
+ * also be called from another script. Using trans_function_name()
+ * would also work, but some plugins depend on the name being
+ * printable text. */
+ sprintf(sid_buf, "<SNR>%" PRId64 "_", (int64_t)current_SID);
+ rettv->vval.v_string =
+ alloc((int)(STRLEN(sid_buf) + STRLEN(s + off) + 1));
+ if (rettv->vval.v_string != NULL) {
+ STRCPY(rettv->vval.v_string, sid_buf);
+ STRCAT(rettv->vval.v_string, s + off);
+ }
+ } else
+ rettv->vval.v_string = vim_strsave(s);
+ rettv->v_type = VAR_FUNC;
+ }
+}
+
+/*
+ * "garbagecollect()" function
+ */
+static void f_garbagecollect(typval_T *argvars, typval_T *rettv)
+{
+ /* This is postponed until we are back at the toplevel, because we may be
+ * using Lists and Dicts internally. E.g.: ":echo [garbagecollect()]". */
+ want_garbage_collect = TRUE;
+
+ if (argvars[0].v_type != VAR_UNKNOWN && get_tv_number(&argvars[0]) == 1)
+ garbage_collect_at_exit = TRUE;
+}
+
+/*
+ * "get()" function
+ */
+static void f_get(typval_T *argvars, typval_T *rettv)
+{
+ listitem_T *li;
+ list_T *l;
+ dictitem_T *di;
+ dict_T *d;
+ typval_T *tv = NULL;
+
+ if (argvars[0].v_type == VAR_LIST) {
+ if ((l = argvars[0].vval.v_list) != NULL) {
+ int error = FALSE;
+
+ li = list_find(l, get_tv_number_chk(&argvars[1], &error));
+ if (!error && li != NULL)
+ tv = &li->li_tv;
+ }
+ } else if (argvars[0].v_type == VAR_DICT) {
+ if ((d = argvars[0].vval.v_dict) != NULL) {
+ di = dict_find(d, get_tv_string(&argvars[1]), -1);
+ if (di != NULL)
+ tv = &di->di_tv;
+ }
+ } else
+ EMSG2(_(e_listdictarg), "get()");
+
+ if (tv == NULL) {
+ if (argvars[2].v_type != VAR_UNKNOWN)
+ copy_tv(&argvars[2], rettv);
+ } else
+ copy_tv(tv, rettv);
+}
+
+static void get_buffer_lines(buf_T *buf, linenr_T start, linenr_T end,
+ int retlist,
+ typval_T *rettv);
+
+/*
+ * Get line or list of lines from buffer "buf" into "rettv".
+ * Return a range (from start to end) of lines in rettv from the specified
+ * buffer.
+ * If 'retlist' is TRUE, then the lines are returned as a Vim List.
+ */
+static void get_buffer_lines(buf_T *buf, linenr_T start, linenr_T end, int retlist, typval_T *rettv)
+{
+ char_u *p;
+
+ rettv->v_type = VAR_STRING;
+ rettv->vval.v_string = NULL;
+ if (retlist) {
+ rettv_list_alloc(rettv);
+ }
+
+ if (buf == NULL || buf->b_ml.ml_mfp == NULL || start < 0)
+ return;
+
+ if (!retlist) {
+ if (start >= 1 && start <= buf->b_ml.ml_line_count)
+ p = ml_get_buf(buf, start, FALSE);
+ else
+ p = (char_u *)"";
+ rettv->vval.v_string = vim_strsave(p);
+ } else {
+ if (end < start)
+ return;
+
+ if (start < 1)
+ start = 1;
+ if (end > buf->b_ml.ml_line_count)
+ end = buf->b_ml.ml_line_count;
+ while (start <= end) {
+ list_append_string(
+ rettv->vval.v_list, ml_get_buf(buf, start++, FALSE), -1);
+ }
+ }
+}
+
+/*
+ * "getbufline()" function
+ */
+static void f_getbufline(typval_T *argvars, typval_T *rettv)
+{
+ linenr_T lnum;
+ linenr_T end;
+ buf_T *buf;
+
+ (void)get_tv_number(&argvars[0]); /* issue errmsg if type error */
+ ++emsg_off;
+ buf = get_buf_tv(&argvars[0], FALSE);
+ --emsg_off;
+
+ lnum = get_tv_lnum_buf(&argvars[1], buf);
+ if (argvars[2].v_type == VAR_UNKNOWN)
+ end = lnum;
+ else
+ end = get_tv_lnum_buf(&argvars[2], buf);
+
+ get_buffer_lines(buf, lnum, end, TRUE, rettv);
+}
+
+/*
+ * "getbufvar()" function
+ */
+static void f_getbufvar(typval_T *argvars, typval_T *rettv)
+{
+ buf_T *buf;
+ buf_T *save_curbuf;
+ char_u *varname;
+ dictitem_T *v;
+ int done = FALSE;
+
+ (void)get_tv_number(&argvars[0]); /* issue errmsg if type error */
+ varname = get_tv_string_chk(&argvars[1]);
+ ++emsg_off;
+ buf = get_buf_tv(&argvars[0], FALSE);
+
+ rettv->v_type = VAR_STRING;
+ rettv->vval.v_string = NULL;
+
+ if (buf != NULL && varname != NULL) {
+ /* set curbuf to be our buf, temporarily */
+ save_curbuf = curbuf;
+ curbuf = buf;
+
+ if (*varname == '&') { /* buffer-local-option */
+ if (get_option_tv(&varname, rettv, TRUE) == OK)
+ done = TRUE;
+ } else if (STRCMP(varname, "changedtick") == 0) {
+ rettv->v_type = VAR_NUMBER;
+ rettv->vval.v_number = curbuf->b_changedtick;
+ done = TRUE;
+ } else {
+ /* Look up the variable. */
+ /* Let getbufvar({nr}, "") return the "b:" dictionary. */
+ v = find_var_in_ht(&curbuf->b_vars->dv_hashtab,
+ 'b', varname, FALSE);
+ if (v != NULL) {
+ copy_tv(&v->di_tv, rettv);
+ done = TRUE;
+ }
+ }
+
+ /* restore previous notion of curbuf */
+ curbuf = save_curbuf;
+ }
+
+ if (!done && argvars[2].v_type != VAR_UNKNOWN)
+ /* use the default value */
+ copy_tv(&argvars[2], rettv);
+
+ --emsg_off;
+}
+
+/*
+ * "getchar()" function
+ */
+static void f_getchar(typval_T *argvars, typval_T *rettv)
+{
+ varnumber_T n;
+ int error = FALSE;
+
+ /* Position the cursor. Needed after a message that ends in a space. */
+ windgoto(msg_row, msg_col);
+
+ ++no_mapping;
+ ++allow_keys;
+ for (;; ) {
+ if (argvars[0].v_type == VAR_UNKNOWN)
+ /* getchar(): blocking wait. */
+ n = safe_vgetc();
+ else if (get_tv_number_chk(&argvars[0], &error) == 1)
+ /* getchar(1): only check if char avail */
+ n = vpeekc();
+ else if (error || vpeekc() == NUL)
+ /* illegal argument or getchar(0) and no char avail: return zero */
+ n = 0;
+ else
+ /* getchar(0) and char avail: return char */
+ n = safe_vgetc();
+ if (n == K_IGNORE)
+ continue;
+ break;
+ }
+ --no_mapping;
+ --allow_keys;
+
+ vimvars[VV_MOUSE_WIN].vv_nr = 0;
+ vimvars[VV_MOUSE_LNUM].vv_nr = 0;
+ vimvars[VV_MOUSE_COL].vv_nr = 0;
+
+ rettv->vval.v_number = n;
+ if (IS_SPECIAL(n) || mod_mask != 0) {
+ char_u temp[10]; /* modifier: 3, mbyte-char: 6, NUL: 1 */
+ int i = 0;
+
+ /* Turn a special key into three bytes, plus modifier. */
+ if (mod_mask != 0) {
+ temp[i++] = K_SPECIAL;
+ temp[i++] = KS_MODIFIER;
+ temp[i++] = mod_mask;
+ }
+ if (IS_SPECIAL(n)) {
+ temp[i++] = K_SPECIAL;
+ temp[i++] = K_SECOND(n);
+ temp[i++] = K_THIRD(n);
+ } else if (has_mbyte)
+ i += (*mb_char2bytes)(n, temp + i);
+ else
+ temp[i++] = n;
+ temp[i++] = NUL;
+ rettv->v_type = VAR_STRING;
+ rettv->vval.v_string = vim_strsave(temp);
+
+ if (is_mouse_key(n)) {
+ int row = mouse_row;
+ int col = mouse_col;
+ win_T *win;
+ linenr_T lnum;
+ win_T *wp;
+ int winnr = 1;
+
+ if (row >= 0 && col >= 0) {
+ /* Find the window at the mouse coordinates and compute the
+ * text position. */
+ win = mouse_find_win(&row, &col);
+ (void)mouse_comp_pos(win, &row, &col, &lnum);
+ for (wp = firstwin; wp != win; wp = wp->w_next)
+ ++winnr;
+ vimvars[VV_MOUSE_WIN].vv_nr = winnr;
+ vimvars[VV_MOUSE_LNUM].vv_nr = lnum;
+ vimvars[VV_MOUSE_COL].vv_nr = col + 1;
+ }
+ }
+ }
+}
+
+/*
+ * "getcharmod()" function
+ */
+static void f_getcharmod(typval_T *argvars, typval_T *rettv)
+{
+ rettv->vval.v_number = mod_mask;
+}
+
+/*
+ * "getcmdline()" function
+ */
+static void f_getcmdline(typval_T *argvars, typval_T *rettv)
+{
+ rettv->v_type = VAR_STRING;
+ rettv->vval.v_string = get_cmdline_str();
+}
+
+/*
+ * "getcmdpos()" function
+ */
+static void f_getcmdpos(typval_T *argvars, typval_T *rettv)
+{
+ rettv->vval.v_number = get_cmdline_pos() + 1;
+}
+
+/*
+ * "getcmdtype()" function
+ */
+static void f_getcmdtype(typval_T *argvars, typval_T *rettv)
+{
+ rettv->v_type = VAR_STRING;
+ rettv->vval.v_string = alloc(2);
+ if (rettv->vval.v_string != NULL) {
+ rettv->vval.v_string[0] = get_cmdline_type();
+ rettv->vval.v_string[1] = NUL;
+ }
+}
+
+/*
+ * "getcwd()" function
+ */
+static void f_getcwd(typval_T *argvars, typval_T *rettv)
+{
+ char_u *cwd;
+
+ rettv->v_type = VAR_STRING;
+ rettv->vval.v_string = NULL;
+ cwd = alloc(MAXPATHL);
+ if (cwd != NULL) {
+ if (os_dirname(cwd, MAXPATHL) != FAIL) {
+ rettv->vval.v_string = vim_strsave(cwd);
+#ifdef BACKSLASH_IN_FILENAME
+ if (rettv->vval.v_string != NULL)
+ slash_adjust(rettv->vval.v_string);
+#endif
+ }
+ free(cwd);
+ }
+}
+
+/*
+ * "getfontname()" function
+ */
+static void f_getfontname(typval_T *argvars, typval_T *rettv)
+{
+ rettv->v_type = VAR_STRING;
+ rettv->vval.v_string = NULL;
+}
+
+/*
+ * "getfperm({fname})" function
+ */
+static void f_getfperm(typval_T *argvars, typval_T *rettv)
+{
+ char_u *perm = NULL;
+ char_u flags[] = "rwx";
+
+ char_u *filename = get_tv_string(&argvars[0]);
+ int32_t file_perm = os_getperm(filename);
+ if (file_perm >= 0) {
+ perm = vim_strsave((char_u *)"---------");
+ if (perm != NULL) {
+ for (int i = 0; i < 9; i++) {
+ if (file_perm & (1 << (8 - i)))
+ perm[i] = flags[i % 3];
+ }
+ }
+ }
+ rettv->v_type = VAR_STRING;
+ rettv->vval.v_string = perm;
+}
+
+/*
+ * "getfsize({fname})" function
+ */
+static void f_getfsize(typval_T *argvars, typval_T *rettv)
+{
+ char *fname = (char *)get_tv_string(&argvars[0]);
+
+ rettv->v_type = VAR_NUMBER;
+
+ off_t file_size;
+ if (os_get_file_size(fname, &file_size)) {
+ if (os_isdir((char_u *)fname))
+ rettv->vval.v_number = 0;
+ else {
+ rettv->vval.v_number = (varnumber_T)file_size;
+
+ /* non-perfect check for overflow */
+ if ((off_t)rettv->vval.v_number != file_size) {
+ rettv->vval.v_number = -2;
+ }
+ }
+ } else {
+ rettv->vval.v_number = -1;
+ }
+}
+
+/*
+ * "getftime({fname})" function
+ */
+static void f_getftime(typval_T *argvars, typval_T *rettv)
+{
+ char *fname = (char *)get_tv_string(&argvars[0]);
+
+ FileInfo file_info;
+ if (os_get_file_info(fname, &file_info)) {
+ rettv->vval.v_number = (varnumber_T)file_info.stat.st_mtim.tv_sec;
+ } else {
+ rettv->vval.v_number = -1;
+ }
+}
+
+/*
+ * "getftype({fname})" function
+ */
+static void f_getftype(typval_T *argvars, typval_T *rettv)
+{
+ char_u *fname;
+ char_u *type = NULL;
+ char *t;
+
+ fname = get_tv_string(&argvars[0]);
+
+ rettv->v_type = VAR_STRING;
+ FileInfo file_info;
+ if (os_get_file_info_link((char *)fname, &file_info)) {
+ uint64_t mode = file_info.stat.st_mode;
+#ifdef S_ISREG
+ if (S_ISREG(mode))
+ t = "file";
+ else if (S_ISDIR(mode))
+ t = "dir";
+# ifdef S_ISLNK
+ else if (S_ISLNK(mode))
+ t = "link";
+# endif
+# ifdef S_ISBLK
+ else if (S_ISBLK(mode))
+ t = "bdev";
+# endif
+# ifdef S_ISCHR
+ else if (S_ISCHR(mode))
+ t = "cdev";
+# endif
+# ifdef S_ISFIFO
+ else if (S_ISFIFO(mode))
+ t = "fifo";
+# endif
+# ifdef S_ISSOCK
+ else if (S_ISSOCK(mode))
+ t = "fifo";
+# endif
+ else
+ t = "other";
+#else
+# ifdef S_IFMT
+ switch (mode & S_IFMT) {
+ case S_IFREG: t = "file"; break;
+ case S_IFDIR: t = "dir"; break;
+# ifdef S_IFLNK
+ case S_IFLNK: t = "link"; break;
+# endif
+# ifdef S_IFBLK
+ case S_IFBLK: t = "bdev"; break;
+# endif
+# ifdef S_IFCHR
+ case S_IFCHR: t = "cdev"; break;
+# endif
+# ifdef S_IFIFO
+ case S_IFIFO: t = "fifo"; break;
+# endif
+# ifdef S_IFSOCK
+ case S_IFSOCK: t = "socket"; break;
+# endif
+ default: t = "other";
+ }
+# else
+ if (os_isdir(fname))
+ t = "dir";
+ else
+ t = "file";
+# endif
+#endif
+ type = vim_strsave((char_u *)t);
+ }
+ rettv->vval.v_string = type;
+}
+
+/*
+ * "getline(lnum, [end])" function
+ */
+static void f_getline(typval_T *argvars, typval_T *rettv)
+{
+ linenr_T lnum;
+ linenr_T end;
+ int retlist;
+
+ lnum = get_tv_lnum(argvars);
+ if (argvars[1].v_type == VAR_UNKNOWN) {
+ end = 0;
+ retlist = FALSE;
+ } else {
+ end = get_tv_lnum(&argvars[1]);
+ retlist = TRUE;
+ }
+
+ get_buffer_lines(curbuf, lnum, end, retlist, rettv);
+}
+
+/*
+ * "getmatches()" function
+ */
+static void f_getmatches(typval_T *argvars, typval_T *rettv)
+{
+ matchitem_T *cur = curwin->w_match_head;
+
+ rettv_list_alloc(rettv);
+ while (cur != NULL) {
+ dict_T *dict = dict_alloc();
+ dict_add_nr_str(dict, "group", 0L, syn_id2name(cur->hlg_id));
+ dict_add_nr_str(dict, "pattern", 0L, cur->pattern);
+ dict_add_nr_str(dict, "priority", (long)cur->priority, NULL);
+ dict_add_nr_str(dict, "id", (long)cur->id, NULL);
+ list_append_dict(rettv->vval.v_list, dict);
+ cur = cur->next;
+ }
+}
+
+/*
+ * "getpid()" function
+ */
+static void f_getpid(typval_T *argvars, typval_T *rettv)
+{
+ rettv->vval.v_number = os_get_pid();
+}
+
+/*
+ * "getpos(string)" function
+ */
+static void f_getpos(typval_T *argvars, typval_T *rettv)
+{
+ pos_T *fp;
+ list_T *l;
+ int fnum = -1;
+
+ rettv_list_alloc(rettv);
+ l = rettv->vval.v_list;
+ fp = var2fpos(&argvars[0], TRUE, &fnum);
+ list_append_number(l, (fnum != -1) ? (varnumber_T)fnum : (varnumber_T)0);
+ list_append_number(l, (fp != NULL) ? (varnumber_T)fp->lnum : (varnumber_T)0);
+ list_append_number(l,
+ (fp != NULL)
+ ? (varnumber_T)(fp->col == MAXCOL ? MAXCOL : fp->col + 1)
+ : (varnumber_T)0);
+ list_append_number(l,
+ (fp != NULL) ? (varnumber_T)fp->coladd : (varnumber_T)0);
+}
+
+/*
+ * "getqflist()" and "getloclist()" functions
+ */
+static void f_getqflist(typval_T *argvars, typval_T *rettv)
+{
+ rettv_list_alloc(rettv);
+ win_T *wp = NULL;
+ if (argvars[0].v_type != VAR_UNKNOWN) { /* getloclist() */
+ wp = find_win_by_nr(&argvars[0], NULL);
+ if (wp == NULL) {
+ return;
+ }
+ }
+ (void)get_errorlist(wp, rettv->vval.v_list);
+}
+
+/*
+ * "getreg()" function
+ */
+static void f_getreg(typval_T *argvars, typval_T *rettv)
+{
+ char_u *strregname;
+ int regname;
+ int arg2 = FALSE;
+ int error = FALSE;
+
+ if (argvars[0].v_type != VAR_UNKNOWN) {
+ strregname = get_tv_string_chk(&argvars[0]);
+ error = strregname == NULL;
+ if (argvars[1].v_type != VAR_UNKNOWN)
+ arg2 = get_tv_number_chk(&argvars[1], &error);
+ } else
+ strregname = vimvars[VV_REG].vv_str;
+ regname = (strregname == NULL ? '"' : *strregname);
+ if (regname == 0)
+ regname = '"';
+
+ rettv->v_type = VAR_STRING;
+ rettv->vval.v_string = error ? NULL :
+ get_reg_contents(regname, TRUE, arg2);
+}
+
+/*
+ * "getregtype()" function
+ */
+static void f_getregtype(typval_T *argvars, typval_T *rettv)
+{
+ char_u *strregname;
+ int regname;
+ char_u buf[NUMBUFLEN + 2];
+ long reglen = 0;
+
+ if (argvars[0].v_type != VAR_UNKNOWN) {
+ strregname = get_tv_string_chk(&argvars[0]);
+ if (strregname == NULL) { /* type error; errmsg already given */
+ rettv->v_type = VAR_STRING;
+ rettv->vval.v_string = NULL;
+ return;
+ }
+ } else
+ /* Default to v:register */
+ strregname = vimvars[VV_REG].vv_str;
+
+ regname = (strregname == NULL ? '"' : *strregname);
+ if (regname == 0)
+ regname = '"';
+
+ buf[0] = NUL;
+ buf[1] = NUL;
+ switch (get_reg_type(regname, &reglen)) {
+ case MLINE: buf[0] = 'V'; break;
+ case MCHAR: buf[0] = 'v'; break;
+ case MBLOCK:
+ buf[0] = Ctrl_V;
+ sprintf((char *)buf + 1, "%" PRId64, (int64_t)(reglen + 1));
+ break;
+ }
+ rettv->v_type = VAR_STRING;
+ rettv->vval.v_string = vim_strsave(buf);
+}
+
+/*
+ * "gettabvar()" function
+ */
+static void f_gettabvar(typval_T *argvars, typval_T *rettv)
+{
+ tabpage_T *tp;
+ dictitem_T *v;
+ char_u *varname;
+ int done = FALSE;
+
+ rettv->v_type = VAR_STRING;
+ rettv->vval.v_string = NULL;
+
+ varname = get_tv_string_chk(&argvars[1]);
+ tp = find_tabpage((int)get_tv_number_chk(&argvars[0], NULL));
+ if (tp != NULL && varname != NULL) {
+ /* look up the variable */
+ v = find_var_in_ht(&tp->tp_vars->dv_hashtab, 0, varname, FALSE);
+ if (v != NULL) {
+ copy_tv(&v->di_tv, rettv);
+ done = TRUE;
+ }
+ }
+
+ if (!done && argvars[2].v_type != VAR_UNKNOWN)
+ copy_tv(&argvars[2], rettv);
+}
+
+/*
+ * "gettabwinvar()" function
+ */
+static void f_gettabwinvar(typval_T *argvars, typval_T *rettv)
+{
+ getwinvar(argvars, rettv, 1);
+}
+
+/*
+ * "getwinposx()" function
+ */
+static void f_getwinposx(typval_T *argvars, typval_T *rettv)
+{
+ rettv->vval.v_number = -1;
+}
+
+/*
+ * "getwinposy()" function
+ */
+static void f_getwinposy(typval_T *argvars, typval_T *rettv)
+{
+ rettv->vval.v_number = -1;
+}
+
+/*
+ * Find window specified by "vp" in tabpage "tp".
+ */
+static win_T *
+find_win_by_nr (
+ typval_T *vp,
+ tabpage_T *tp /* NULL for current tab page */
+)
+{
+ win_T *wp;
+ int nr;
+
+ nr = get_tv_number_chk(vp, NULL);
+
+ if (nr < 0)
+ return NULL;
+ if (nr == 0)
+ return curwin;
+
+ for (wp = (tp == NULL || tp == curtab) ? firstwin : tp->tp_firstwin;
+ wp != NULL; wp = wp->w_next)
+ if (--nr <= 0)
+ break;
+ return wp;
+}
+
+/*
+ * "getwinvar()" function
+ */
+static void f_getwinvar(typval_T *argvars, typval_T *rettv)
+{
+ getwinvar(argvars, rettv, 0);
+}
+
+/*
+ * getwinvar() and gettabwinvar()
+ */
+static void
+getwinvar (
+ typval_T *argvars,
+ typval_T *rettv,
+ int off /* 1 for gettabwinvar() */
+)
+{
+ win_T *win, *oldcurwin;
+ char_u *varname;
+ dictitem_T *v;
+ tabpage_T *tp = NULL;
+ tabpage_T *oldtabpage = NULL;
+ int done = FALSE;
+
+ if (off == 1)
+ tp = find_tabpage((int)get_tv_number_chk(&argvars[0], NULL));
+ else
+ tp = curtab;
+ win = find_win_by_nr(&argvars[off], tp);
+ varname = get_tv_string_chk(&argvars[off + 1]);
+ ++emsg_off;
+
+ rettv->v_type = VAR_STRING;
+ rettv->vval.v_string = NULL;
+
+ if (win != NULL && varname != NULL) {
+ /* Set curwin to be our win, temporarily. Also set the tabpage,
+ * otherwise the window is not valid. */
+ switch_win(&oldcurwin, &oldtabpage, win, tp, TRUE);
+
+ if (*varname == '&') { /* window-local-option */
+ if (get_option_tv(&varname, rettv, 1) == OK)
+ done = TRUE;
+ } else {
+ /* Look up the variable. */
+ /* Let getwinvar({nr}, "") return the "w:" dictionary. */
+ v = find_var_in_ht(&win->w_vars->dv_hashtab, 'w', varname, FALSE);
+ if (v != NULL) {
+ copy_tv(&v->di_tv, rettv);
+ done = TRUE;
+ }
+ }
+
+ /* restore previous notion of curwin */
+ restore_win(oldcurwin, oldtabpage, TRUE);
+ }
+
+ if (!done && argvars[off + 2].v_type != VAR_UNKNOWN)
+ /* use the default return value */
+ copy_tv(&argvars[off + 2], rettv);
+
+ --emsg_off;
+}
+
+/*
+ * "glob()" function
+ */
+static void f_glob(typval_T *argvars, typval_T *rettv)
+{
+ int options = WILD_SILENT|WILD_USE_NL;
+ expand_T xpc;
+ int error = FALSE;
+
+ /* When the optional second argument is non-zero, don't remove matches
+ * for 'wildignore' and don't put matches for 'suffixes' at the end. */
+ rettv->v_type = VAR_STRING;
+ if (argvars[1].v_type != VAR_UNKNOWN) {
+ if (get_tv_number_chk(&argvars[1], &error))
+ options |= WILD_KEEP_ALL;
+ if (argvars[2].v_type != VAR_UNKNOWN
+ && get_tv_number_chk(&argvars[2], &error)) {
+ rettv->v_type = VAR_LIST;
+ rettv->vval.v_list = NULL;
+ }
+ }
+ if (!error) {
+ ExpandInit(&xpc);
+ xpc.xp_context = EXPAND_FILES;
+ if (p_wic)
+ options += WILD_ICASE;
+ if (rettv->v_type == VAR_STRING)
+ rettv->vval.v_string = ExpandOne(&xpc, get_tv_string(&argvars[0]),
+ NULL, options, WILD_ALL);
+ else {
+ rettv_list_alloc(rettv);
+ ExpandOne(&xpc, get_tv_string(&argvars[0]), NULL, options, WILD_ALL_KEEP);
+ for (int i = 0; i < xpc.xp_numfiles; i++) {
+ list_append_string(rettv->vval.v_list, xpc.xp_files[i], -1);
+ }
+ ExpandCleanup(&xpc);
+ }
+ } else
+ rettv->vval.v_string = NULL;
+}
+
+/*
+ * "globpath()" function
+ */
+static void f_globpath(typval_T *argvars, typval_T *rettv)
+{
+ int flags = 0;
+ char_u buf1[NUMBUFLEN];
+ char_u *file = get_tv_string_buf_chk(&argvars[1], buf1);
+ int error = FALSE;
+
+ /* When the optional second argument is non-zero, don't remove matches
+ * for 'wildignore' and don't put matches for 'suffixes' at the end. */
+ if (argvars[2].v_type != VAR_UNKNOWN
+ && get_tv_number_chk(&argvars[2], &error))
+ flags |= WILD_KEEP_ALL;
+ rettv->v_type = VAR_STRING;
+ if (file == NULL || error)
+ rettv->vval.v_string = NULL;
+ else
+ rettv->vval.v_string = globpath(get_tv_string(&argvars[0]), file,
+ flags);
+}
+
+/*
+ * "has()" function
+ */
+static void f_has(typval_T *argvars, typval_T *rettv)
+{
+ int i;
+ char_u *name;
+ int n = FALSE;
+ static char *(has_list[]) =
+ {
+#ifdef UNIX
+ "unix",
+#endif
+#if defined(WIN64) || defined(_WIN64)
+ "win64",
+#endif
+#ifndef CASE_INSENSITIVE_FILENAME
+ "fname_case",
+#endif
+#ifdef HAVE_ACL
+ "acl",
+#endif
+ "arabic",
+ "autocmd",
+#if defined(SOME_BUILTIN_TCAPS) || defined(ALL_BUILTIN_TCAPS)
+ "builtin_terms",
+# ifdef ALL_BUILTIN_TCAPS
+ "all_builtin_terms",
+# endif
+#endif
+#if defined(FEAT_BROWSE) && (defined(USE_FILE_CHOOSER) \
+ || defined(FEAT_GUI_W32) \
+ || defined(FEAT_GUI_MOTIF))
+ "browsefilter",
+#endif
+ "byte_offset",
+ "cindent",
+ "cmdline_compl",
+ "cmdline_hist",
+ "comments",
+ "conceal",
+ "cryptv",
+ "cscope",
+ "cursorbind",
+ "cursorshape",
+#ifdef DEBUG
+ "debug",
+#endif
+ "dialog_con",
+ "diff",
+ "digraphs",
+ "eval", /* always present, of course! */
+ "ex_extra",
+ "extra_search",
+ "farsi",
+ "file_in_path",
+ "filterpipe",
+ "find_in_path",
+ "float",
+ "folding",
+#if defined(UNIX)
+ "fork",
+#endif
+ "gettext",
+#if defined(HAVE_ICONV_H) && defined(USE_ICONV)
+ "iconv",
+#endif
+ "insert_expand",
+ "jumplist",
+ "keymap",
+ "langmap",
+#ifdef FEAT_LIBCALL
+ "libcall",
+#endif
+ "linebreak",
+ "lispindent",
+ "listcmds",
+ "localmap",
+ "menu",
+ "mksession",
+ "modify_fname",
+ "mouse",
+#if defined(UNIX)
+ "mouse_dec",
+# ifdef FEAT_MOUSE_JSB
+ "mouse_jsbterm",
+# endif
+ "mouse_netterm",
+ "mouse_sgr",
+ "mouse_urxvt",
+ "mouse_xterm",
+#endif
+ "multi_byte",
+ "multi_lang",
+ "path_extra",
+ "persistent_undo",
+ "postscript",
+ "printer",
+ "profile",
+ "reltime",
+ "quickfix",
+ "rightleft",
+ "scrollbind",
+ "showcmd",
+ "cmdline_info",
+ "signs",
+ "smartindent",
+#ifdef STARTUPTIME
+ "startuptime",
+#endif
+ "statusline",
+ "spell",
+ "syntax",
+#if !defined(UNIX)
+ "system",
+#endif
+ "tag_binary",
+ "tag_old_static",
+#ifdef FEAT_TAG_ANYWHITE
+ "tag_any_white",
+#endif
+#ifdef TERMINFO
+ "terminfo",
+#endif
+ "termresponse",
+ "textobjects",
+#ifdef HAVE_TGETENT
+ "tgetent",
+#endif
+ "title",
+ "user-commands", /* was accidentally included in 5.4 */
+ "user_commands",
+ "viminfo",
+ "vertsplit",
+ "virtualedit",
+ "visual",
+ "visualextra",
+ "vreplace",
+ "wildignore",
+ "wildmenu",
+ "windows",
+ "winaltkeys",
+ "writebackup",
+ "neovim",
+ NULL
+ };
+
+ name = get_tv_string(&argvars[0]);
+ for (i = 0; has_list[i] != NULL; ++i)
+ if (STRICMP(name, has_list[i]) == 0) {
+ n = TRUE;
+ break;
+ }
+
+ if (n == FALSE) {
+ if (STRNICMP(name, "patch", 5) == 0) {
+ if (name[5] == '-'
+ && STRLEN(name) > 11
+ && vim_isdigit(name[6])
+ && vim_isdigit(name[8])
+ && vim_isdigit(name[10])) {
+ int major = atoi((char *)name + 6);
+ int minor = atoi((char *)name + 8);
+
+ // Expect "patch-9.9.01234".
+ n = (major < VIM_VERSION_MAJOR
+ || (major == VIM_VERSION_MAJOR
+ && (minor < VIM_VERSION_MINOR
+ || (minor == VIM_VERSION_MINOR
+ && has_patch(atoi((char *)name + 10))))));
+ } else {
+ n = has_patch(atoi((char *)name + 5));
+ }
+ } else if (STRICMP(name, "vim_starting") == 0) {
+ n = (starting != 0);
+ } else if (STRICMP(name, "multi_byte_encoding") == 0) {
+ n = has_mbyte;
+#if defined(USE_ICONV) && defined(DYNAMIC_ICONV)
+ } else if (STRICMP(name, "iconv") == 0) {
+ n = iconv_enabled(FALSE);
+#endif
+ } else if (STRICMP(name, "syntax_items") == 0) {
+ n = syntax_present(curwin);
+ }
+ }
+
+ rettv->vval.v_number = n;
+}
+
+/*
+ * "has_key()" function
+ */
+static void f_has_key(typval_T *argvars, typval_T *rettv)
+{
+ if (argvars[0].v_type != VAR_DICT) {
+ EMSG(_(e_dictreq));
+ return;
+ }
+ if (argvars[0].vval.v_dict == NULL)
+ return;
+
+ rettv->vval.v_number = dict_find(argvars[0].vval.v_dict,
+ get_tv_string(&argvars[1]), -1) != NULL;
+}
+
+/*
+ * "haslocaldir()" function
+ */
+static void f_haslocaldir(typval_T *argvars, typval_T *rettv)
+{
+ rettv->vval.v_number = (curwin->w_localdir != NULL);
+}
+
+/*
+ * "hasmapto()" function
+ */
+static void f_hasmapto(typval_T *argvars, typval_T *rettv)
+{
+ char_u *name;
+ char_u *mode;
+ char_u buf[NUMBUFLEN];
+ int abbr = FALSE;
+
+ name = get_tv_string(&argvars[0]);
+ if (argvars[1].v_type == VAR_UNKNOWN)
+ mode = (char_u *)"nvo";
+ else {
+ mode = get_tv_string_buf(&argvars[1], buf);
+ if (argvars[2].v_type != VAR_UNKNOWN)
+ abbr = get_tv_number(&argvars[2]);
+ }
+
+ if (map_to_exists(name, mode, abbr))
+ rettv->vval.v_number = TRUE;
+ else
+ rettv->vval.v_number = FALSE;
+}
+
+/*
+ * "histadd()" function
+ */
+static void f_histadd(typval_T *argvars, typval_T *rettv)
+{
+ int histype;
+ char_u *str;
+ char_u buf[NUMBUFLEN];
+
+ rettv->vval.v_number = FALSE;
+ if (check_restricted() || check_secure())
+ return;
+ str = get_tv_string_chk(&argvars[0]); /* NULL on type error */
+ histype = str != NULL ? get_histtype(str) : -1;
+ if (histype >= 0) {
+ str = get_tv_string_buf(&argvars[1], buf);
+ if (*str != NUL) {
+ init_history();
+ add_to_history(histype, str, FALSE, NUL);
+ rettv->vval.v_number = TRUE;
+ return;
+ }
+ }
+}
+
+/*
+ * "histdel()" function
+ */
+static void f_histdel(typval_T *argvars, typval_T *rettv)
+{
+ int n;
+ char_u buf[NUMBUFLEN];
+ char_u *str;
+
+ str = get_tv_string_chk(&argvars[0]); /* NULL on type error */
+ if (str == NULL)
+ n = 0;
+ else if (argvars[1].v_type == VAR_UNKNOWN)
+ /* only one argument: clear entire history */
+ n = clr_history(get_histtype(str));
+ else if (argvars[1].v_type == VAR_NUMBER)
+ /* index given: remove that entry */
+ n = del_history_idx(get_histtype(str),
+ (int)get_tv_number(&argvars[1]));
+ else
+ /* string given: remove all matching entries */
+ n = del_history_entry(get_histtype(str),
+ get_tv_string_buf(&argvars[1], buf));
+ rettv->vval.v_number = n;
+}
+
+/*
+ * "histget()" function
+ */
+static void f_histget(typval_T *argvars, typval_T *rettv)
+{
+ int type;
+ int idx;
+ char_u *str;
+
+ str = get_tv_string_chk(&argvars[0]); /* NULL on type error */
+ if (str == NULL)
+ rettv->vval.v_string = NULL;
+ else {
+ type = get_histtype(str);
+ if (argvars[1].v_type == VAR_UNKNOWN)
+ idx = get_history_idx(type);
+ else
+ idx = (int)get_tv_number_chk(&argvars[1], NULL);
+ /* -1 on type error */
+ rettv->vval.v_string = vim_strsave(get_history_entry(type, idx));
+ }
+ rettv->v_type = VAR_STRING;
+}
+
+/*
+ * "histnr()" function
+ */
+static void f_histnr(typval_T *argvars, typval_T *rettv)
+{
+ int i;
+
+ char_u *history = get_tv_string_chk(&argvars[0]);
+
+ i = history == NULL ? HIST_CMD - 1 : get_histtype(history);
+ if (i >= HIST_CMD && i < HIST_COUNT)
+ i = get_history_idx(i);
+ else
+ i = -1;
+ rettv->vval.v_number = i;
+}
+
+/*
+ * "highlightID(name)" function
+ */
+static void f_hlID(typval_T *argvars, typval_T *rettv)
+{
+ rettv->vval.v_number = syn_name2id(get_tv_string(&argvars[0]));
+}
+
+/*
+ * "highlight_exists()" function
+ */
+static void f_hlexists(typval_T *argvars, typval_T *rettv)
+{
+ rettv->vval.v_number = highlight_exists(get_tv_string(&argvars[0]));
+}
+
+/*
+ * "hostname()" function
+ */
+static void f_hostname(typval_T *argvars, typval_T *rettv)
+{
+ char hostname[256];
+
+ os_get_hostname(hostname, 256);
+ rettv->v_type = VAR_STRING;
+ rettv->vval.v_string = vim_strsave((char_u *)hostname);
+}
+
+/*
+ * iconv() function
+ */
+static void f_iconv(typval_T *argvars, typval_T *rettv)
+{
+ char_u buf1[NUMBUFLEN];
+ char_u buf2[NUMBUFLEN];
+ char_u *from, *to, *str;
+ vimconv_T vimconv;
+
+ rettv->v_type = VAR_STRING;
+ rettv->vval.v_string = NULL;
+
+ str = get_tv_string(&argvars[0]);
+ from = enc_canonize(enc_skip(get_tv_string_buf(&argvars[1], buf1)));
+ to = enc_canonize(enc_skip(get_tv_string_buf(&argvars[2], buf2)));
+ vimconv.vc_type = CONV_NONE;
+ convert_setup(&vimconv, from, to);
+
+ /* If the encodings are equal, no conversion needed. */
+ if (vimconv.vc_type == CONV_NONE)
+ rettv->vval.v_string = vim_strsave(str);
+ else
+ rettv->vval.v_string = string_convert(&vimconv, str, NULL);
+
+ convert_setup(&vimconv, NULL, NULL);
+ free(from);
+ free(to);
+}
+
+/*
+ * "indent()" function
+ */
+static void f_indent(typval_T *argvars, typval_T *rettv)
+{
+ linenr_T lnum;
+
+ lnum = get_tv_lnum(argvars);
+ if (lnum >= 1 && lnum <= curbuf->b_ml.ml_line_count)
+ rettv->vval.v_number = get_indent_lnum(lnum);
+ else
+ rettv->vval.v_number = -1;
+}
+
+/*
+ * "index()" function
+ */
+static void f_index(typval_T *argvars, typval_T *rettv)
+{
+ list_T *l;
+ listitem_T *item;
+ long idx = 0;
+ int ic = FALSE;
+
+ rettv->vval.v_number = -1;
+ if (argvars[0].v_type != VAR_LIST) {
+ EMSG(_(e_listreq));
+ return;
+ }
+ l = argvars[0].vval.v_list;
+ if (l != NULL) {
+ item = l->lv_first;
+ if (argvars[2].v_type != VAR_UNKNOWN) {
+ int error = FALSE;
+
+ /* Start at specified item. Use the cached index that list_find()
+ * sets, so that a negative number also works. */
+ item = list_find(l, get_tv_number_chk(&argvars[2], &error));
+ idx = l->lv_idx;
+ if (argvars[3].v_type != VAR_UNKNOWN)
+ ic = get_tv_number_chk(&argvars[3], &error);
+ if (error)
+ item = NULL;
+ }
+
+ for (; item != NULL; item = item->li_next, ++idx)
+ if (tv_equal(&item->li_tv, &argvars[1], ic, FALSE)) {
+ rettv->vval.v_number = idx;
+ break;
+ }
+ }
+}
+
+static int inputsecret_flag = 0;
+
+static void get_user_input(typval_T *argvars, typval_T *rettv,
+ int inputdialog);
+
+/*
+ * This function is used by f_input() and f_inputdialog() functions. The third
+ * argument to f_input() specifies the type of completion to use at the
+ * prompt. The third argument to f_inputdialog() specifies the value to return
+ * when the user cancels the prompt.
+ */
+static void get_user_input(typval_T *argvars, typval_T *rettv, int inputdialog)
+{
+ char_u *prompt = get_tv_string_chk(&argvars[0]);
+ char_u *p = NULL;
+ int c;
+ char_u buf[NUMBUFLEN];
+ int cmd_silent_save = cmd_silent;
+ char_u *defstr = (char_u *)"";
+ int xp_type = EXPAND_NOTHING;
+ char_u *xp_arg = NULL;
+
+ rettv->v_type = VAR_STRING;
+ rettv->vval.v_string = NULL;
+
+#ifdef NO_CONSOLE_INPUT
+ /* While starting up, there is no place to enter text. */
+ if (no_console_input())
+ return;
+#endif
+
+ cmd_silent = FALSE; /* Want to see the prompt. */
+ if (prompt != NULL) {
+ /* Only the part of the message after the last NL is considered as
+ * prompt for the command line */
+ p = vim_strrchr(prompt, '\n');
+ if (p == NULL)
+ p = prompt;
+ else {
+ ++p;
+ c = *p;
+ *p = NUL;
+ msg_start();
+ msg_clr_eos();
+ msg_puts_attr(prompt, echo_attr);
+ msg_didout = FALSE;
+ msg_starthere();
+ *p = c;
+ }
+ cmdline_row = msg_row;
+
+ if (argvars[1].v_type != VAR_UNKNOWN) {
+ defstr = get_tv_string_buf_chk(&argvars[1], buf);
+ if (defstr != NULL)
+ stuffReadbuffSpec(defstr);
+
+ if (!inputdialog && argvars[2].v_type != VAR_UNKNOWN) {
+ char_u *xp_name;
+ int xp_namelen;
+ long argt;
+
+ /* input() with a third argument: completion */
+ rettv->vval.v_string = NULL;
+
+ xp_name = get_tv_string_buf_chk(&argvars[2], buf);
+ if (xp_name == NULL)
+ return;
+
+ xp_namelen = (int)STRLEN(xp_name);
+
+ if (parse_compl_arg(xp_name, xp_namelen, &xp_type, &argt,
+ &xp_arg) == FAIL)
+ return;
+ }
+ }
+
+ if (defstr != NULL) {
+ int save_ex_normal_busy = ex_normal_busy;
+ ex_normal_busy = 0;
+ rettv->vval.v_string =
+ getcmdline_prompt(inputsecret_flag ? NUL : '@', p, echo_attr,
+ xp_type, xp_arg);
+ ex_normal_busy = save_ex_normal_busy;
+ }
+ if (inputdialog && rettv->vval.v_string == NULL
+ && argvars[1].v_type != VAR_UNKNOWN
+ && argvars[2].v_type != VAR_UNKNOWN)
+ rettv->vval.v_string = vim_strsave(get_tv_string_buf(
+ &argvars[2], buf));
+
+ free(xp_arg);
+
+ /* since the user typed this, no need to wait for return */
+ need_wait_return = FALSE;
+ msg_didout = FALSE;
+ }
+ cmd_silent = cmd_silent_save;
+}
+
+/*
+ * "input()" function
+ * Also handles inputsecret() when inputsecret is set.
+ */
+static void f_input(typval_T *argvars, typval_T *rettv)
+{
+ get_user_input(argvars, rettv, FALSE);
+}
+
+/*
+ * "inputdialog()" function
+ */
+static void f_inputdialog(typval_T *argvars, typval_T *rettv)
+{
+ get_user_input(argvars, rettv, TRUE);
+}
+
+/*
+ * "inputlist()" function
+ */
+static void f_inputlist(typval_T *argvars, typval_T *rettv)
+{
+ listitem_T *li;
+ int selected;
+ int mouse_used;
+
+#ifdef NO_CONSOLE_INPUT
+ /* While starting up, there is no place to enter text. */
+ if (no_console_input())
+ return;
+#endif
+ if (argvars[0].v_type != VAR_LIST || argvars[0].vval.v_list == NULL) {
+ EMSG2(_(e_listarg), "inputlist()");
+ return;
+ }
+
+ msg_start();
+ msg_row = Rows - 1; /* for when 'cmdheight' > 1 */
+ lines_left = Rows; /* avoid more prompt */
+ msg_scroll = TRUE;
+ msg_clr_eos();
+
+ for (li = argvars[0].vval.v_list->lv_first; li != NULL; li = li->li_next) {
+ msg_puts(get_tv_string(&li->li_tv));
+ msg_putchar('\n');
+ }
+
+ /* Ask for choice. */
+ selected = prompt_for_number(&mouse_used);
+ if (mouse_used)
+ selected -= lines_left;
+
+ rettv->vval.v_number = selected;
+}
+
+
+static garray_T ga_userinput = {0, 0, sizeof(tasave_T), 4, NULL};
+
+/*
+ * "inputrestore()" function
+ */
+static void f_inputrestore(typval_T *argvars, typval_T *rettv)
+{
+ if (ga_userinput.ga_len > 0) {
+ --ga_userinput.ga_len;
+ restore_typeahead((tasave_T *)(ga_userinput.ga_data)
+ + ga_userinput.ga_len);
+ /* default return is zero == OK */
+ } else if (p_verbose > 1) {
+ verb_msg((char_u *)_("called inputrestore() more often than inputsave()"));
+ rettv->vval.v_number = 1; /* Failed */
+ }
+}
+
+/*
+ * "inputsave()" function
+ */
+static void f_inputsave(typval_T *argvars, typval_T *rettv)
+{
+ /* Add an entry to the stack of typeahead storage. */
+ ga_grow(&ga_userinput, 1);
+ save_typeahead((tasave_T *)(ga_userinput.ga_data)
+ + ga_userinput.ga_len);
+ ++ga_userinput.ga_len;
+}
+
+/*
+ * "inputsecret()" function
+ */
+static void f_inputsecret(typval_T *argvars, typval_T *rettv)
+{
+ ++cmdline_star;
+ ++inputsecret_flag;
+ f_input(argvars, rettv);
+ --cmdline_star;
+ --inputsecret_flag;
+}
+
+/*
+ * "insert()" function
+ */
+static void f_insert(typval_T *argvars, typval_T *rettv)
+{
+ long before = 0;
+ listitem_T *item;
+ list_T *l;
+ int error = FALSE;
+
+ if (argvars[0].v_type != VAR_LIST)
+ EMSG2(_(e_listarg), "insert()");
+ else if ((l = argvars[0].vval.v_list) != NULL
+ && !tv_check_lock(l->lv_lock, (char_u *)_("insert() argument"))) {
+ if (argvars[2].v_type != VAR_UNKNOWN)
+ before = get_tv_number_chk(&argvars[2], &error);
+ if (error)
+ return; /* type error; errmsg already given */
+
+ if (before == l->lv_len)
+ item = NULL;
+ else {
+ item = list_find(l, before);
+ if (item == NULL) {
+ EMSGN(_(e_listidx), before);
+ l = NULL;
+ }
+ }
+ if (l != NULL) {
+ list_insert_tv(l, &argvars[1], item);
+ copy_tv(&argvars[0], rettv);
+ }
+ }
+}
+
+/*
+ * "invert(expr)" function
+ */
+static void f_invert(typval_T *argvars, typval_T *rettv)
+{
+ rettv->vval.v_number = ~get_tv_number_chk(&argvars[0], NULL);
+}
+
+/*
+ * "isdirectory()" function
+ */
+static void f_isdirectory(typval_T *argvars, typval_T *rettv)
+{
+ rettv->vval.v_number = os_isdir(get_tv_string(&argvars[0]));
+}
+
+/*
+ * "islocked()" function
+ */
+static void f_islocked(typval_T *argvars, typval_T *rettv)
+{
+ lval_T lv;
+ char_u *end;
+ dictitem_T *di;
+
+ rettv->vval.v_number = -1;
+ end = get_lval(get_tv_string(&argvars[0]), NULL, &lv, FALSE, FALSE,
+ GLV_NO_AUTOLOAD, FNE_CHECK_START);
+ if (end != NULL && lv.ll_name != NULL) {
+ if (*end != NUL)
+ EMSG(_(e_trailing));
+ else {
+ if (lv.ll_tv == NULL) {
+ if (check_changedtick(lv.ll_name))
+ rettv->vval.v_number = 1; /* always locked */
+ else {
+ di = find_var(lv.ll_name, NULL, TRUE);
+ if (di != NULL) {
+ /* Consider a variable locked when:
+ * 1. the variable itself is locked
+ * 2. the value of the variable is locked.
+ * 3. the List or Dict value is locked.
+ */
+ rettv->vval.v_number = ((di->di_flags & DI_FLAGS_LOCK)
+ || tv_islocked(&di->di_tv));
+ }
+ }
+ } else if (lv.ll_range)
+ EMSG(_("E786: Range not allowed"));
+ else if (lv.ll_newkey != NULL)
+ EMSG2(_(e_dictkey), lv.ll_newkey);
+ else if (lv.ll_list != NULL)
+ /* List item. */
+ rettv->vval.v_number = tv_islocked(&lv.ll_li->li_tv);
+ else
+ /* Dictionary item. */
+ rettv->vval.v_number = tv_islocked(&lv.ll_di->di_tv);
+ }
+ }
+
+ clear_lval(&lv);
+}
+
+static void dict_list(typval_T *argvars, typval_T *rettv, int what);
+
+/*
+ * Turn a dict into a list:
+ * "what" == 0: list of keys
+ * "what" == 1: list of values
+ * "what" == 2: list of items
+ */
+static void dict_list(typval_T *argvars, typval_T *rettv, int what)
+{
+ list_T *l2;
+ dictitem_T *di;
+ hashitem_T *hi;
+ listitem_T *li;
+ listitem_T *li2;
+ dict_T *d;
+ int todo;
+
+ if (argvars[0].v_type != VAR_DICT) {
+ EMSG(_(e_dictreq));
+ return;
+ }
+ if ((d = argvars[0].vval.v_dict) == NULL)
+ return;
+
+ rettv_list_alloc(rettv);
+
+ todo = (int)d->dv_hashtab.ht_used;
+ for (hi = d->dv_hashtab.ht_array; todo > 0; ++hi) {
+ if (!HASHITEM_EMPTY(hi)) {
+ --todo;
+ di = HI2DI(hi);
+
+ li = listitem_alloc();
+ if (li == NULL)
+ break;
+ list_append(rettv->vval.v_list, li);
+
+ if (what == 0) {
+ /* keys() */
+ li->li_tv.v_type = VAR_STRING;
+ li->li_tv.v_lock = 0;
+ li->li_tv.vval.v_string = vim_strsave(di->di_key);
+ } else if (what == 1) {
+ /* values() */
+ copy_tv(&di->di_tv, &li->li_tv);
+ } else {
+ /* items() */
+ l2 = list_alloc();
+ li->li_tv.v_type = VAR_LIST;
+ li->li_tv.v_lock = 0;
+ li->li_tv.vval.v_list = l2;
+ if (l2 == NULL)
+ break;
+ ++l2->lv_refcount;
+
+ li2 = listitem_alloc();
+ if (li2 == NULL)
+ break;
+ list_append(l2, li2);
+ li2->li_tv.v_type = VAR_STRING;
+ li2->li_tv.v_lock = 0;
+ li2->li_tv.vval.v_string = vim_strsave(di->di_key);
+
+ li2 = listitem_alloc();
+ if (li2 == NULL)
+ break;
+ list_append(l2, li2);
+ copy_tv(&di->di_tv, &li2->li_tv);
+ }
+ }
+ }
+}
+
+/*
+ * "items(dict)" function
+ */
+static void f_items(typval_T *argvars, typval_T *rettv)
+{
+ dict_list(argvars, rettv, 2);
+}
+
+// "jobstart()" function
+static void f_job_start(typval_T *argvars, typval_T *rettv)
+{
+ list_T *args = NULL;
+ listitem_T *arg;
+ int i, argvl, argsl;
+ char **argv = NULL;
+
+ rettv->v_type = VAR_NUMBER;
+ rettv->vval.v_number = 0;
+
+ if (check_restricted() || check_secure()) {
+ return;
+ }
+
+ if (argvars[0].v_type != VAR_STRING
+ || argvars[1].v_type != VAR_STRING
+ || (argvars[2].v_type != VAR_LIST
+ && argvars[2].v_type != VAR_UNKNOWN)) {
+ // Wrong argument types
+ EMSG(_(e_invarg));
+ return;
+ }
+
+ argsl = 0;
+ if (argvars[2].v_type == VAR_LIST) {
+ args = argvars[2].vval.v_list;
+ argsl = args->lv_len;
+ // Assert that all list items are strings
+ for (arg = args->lv_first; arg != NULL; arg = arg->li_next) {
+ if (arg->li_tv.v_type != VAR_STRING) {
+ EMSG(_(e_invarg));
+ return;
+ }
+ }
+ }
+
+ if (!os_can_exe(get_tv_string(&argvars[1]))) {
+ // String is not executable
+ EMSG2(e_jobexe, get_tv_string(&argvars[1]));
+ return;
+ }
+
+ // Allocate extra memory for the argument vector and the NULL pointer
+ argvl = argsl + 2;
+ argv = xmalloc(sizeof(char_u *) * argvl);
+
+ // Copy program name
+ argv[0] = xstrdup((char *)argvars[1].vval.v_string);
+
+ i = 1;
+ // Copy arguments to the vector
+ if (argsl > 0) {
+ for (arg = args->lv_first; arg != NULL; arg = arg->li_next) {
+ argv[i++] = xstrdup((char *)arg->li_tv.vval.v_string);
+ }
+ }
+
+ // The last item of argv must be NULL
+ argv[i] = NULL;
+
+ rettv->vval.v_number = job_start(argv,
+ xstrdup((char *)argvars[0].vval.v_string),
+ on_job_stdout,
+ on_job_stderr,
+ on_job_exit);
+
+ if (rettv->vval.v_number <= 0) {
+ if (rettv->vval.v_number == 0) {
+ EMSG(_(e_jobtblfull));
+ } else {
+ EMSG(_(e_jobexe));
+ }
+ }
+}
+
+// "jobstop()" function
+static void f_job_stop(typval_T *argvars, typval_T *rettv)
+{
+ rettv->v_type = VAR_NUMBER;
+ rettv->vval.v_number = 0;
+
+ if (check_restricted() || check_secure()) {
+ return;
+ }
+
+ if (argvars[0].v_type != VAR_NUMBER) {
+ // Only argument is the job id
+ EMSG(_(e_invarg));
+ return;
+ }
+
+ if (!job_stop(argvars[0].vval.v_number)) {
+ // Probably an invalid job id
+ EMSG(_(e_invjob));
+ return;
+ }
+
+ rettv->vval.v_number = 1;
+}
+
+// "jobwrite()" function
+static void f_job_write(typval_T *argvars, typval_T *rettv)
+{
+ bool res;
+ rettv->v_type = VAR_NUMBER;
+ rettv->vval.v_number = 0;
+
+ if (check_restricted() || check_secure()) {
+ return;
+ }
+
+ if (argvars[0].v_type != VAR_NUMBER || argvars[1].v_type != VAR_STRING) {
+ // First argument is the job id and second is the string to write to
+ // the job's stdin
+ EMSG(_(e_invarg));
+ return;
+ }
+
+ res = job_write(argvars[0].vval.v_number,
+ xstrdup((char *)argvars[1].vval.v_string),
+ strlen((char *)argvars[1].vval.v_string));
+
+ if (!res) {
+ // Invalid job id
+ EMSG(_(e_invjob));
+ }
+
+ rettv->vval.v_number = 1;
+}
+
+/*
+ * "join()" function
+ */
+static void f_join(typval_T *argvars, typval_T *rettv)
+{
+ garray_T ga;
+ char_u *sep;
+
+ if (argvars[0].v_type != VAR_LIST) {
+ EMSG(_(e_listreq));
+ return;
+ }
+ if (argvars[0].vval.v_list == NULL)
+ return;
+ if (argvars[1].v_type == VAR_UNKNOWN)
+ sep = (char_u *)" ";
+ else
+ sep = get_tv_string_chk(&argvars[1]);
+
+ rettv->v_type = VAR_STRING;
+
+ if (sep != NULL) {
+ ga_init(&ga, (int)sizeof(char), 80);
+ list_join(&ga, argvars[0].vval.v_list, sep, TRUE, 0);
+ ga_append(&ga, NUL);
+ rettv->vval.v_string = (char_u *)ga.ga_data;
+ } else
+ rettv->vval.v_string = NULL;
+}
+
+/*
+ * "keys()" function
+ */
+static void f_keys(typval_T *argvars, typval_T *rettv)
+{
+ dict_list(argvars, rettv, 0);
+}
+
+/*
+ * "last_buffer_nr()" function.
+ */
+static void f_last_buffer_nr(typval_T *argvars, typval_T *rettv)
+{
+ int n = 0;
+ buf_T *buf;
+
+ for (buf = firstbuf; buf != NULL; buf = buf->b_next)
+ if (n < buf->b_fnum)
+ n = buf->b_fnum;
+
+ rettv->vval.v_number = n;
+}
+
+/*
+ * "len()" function
+ */
+static void f_len(typval_T *argvars, typval_T *rettv)
+{
+ switch (argvars[0].v_type) {
+ case VAR_STRING:
+ case VAR_NUMBER:
+ rettv->vval.v_number = (varnumber_T)STRLEN(
+ get_tv_string(&argvars[0]));
+ break;
+ case VAR_LIST:
+ rettv->vval.v_number = list_len(argvars[0].vval.v_list);
+ break;
+ case VAR_DICT:
+ rettv->vval.v_number = dict_len(argvars[0].vval.v_dict);
+ break;
+ default:
+ EMSG(_("E701: Invalid type for len()"));
+ break;
+ }
+}
+
+static void libcall_common(typval_T *argvars, typval_T *rettv, int type);
+
+static void libcall_common(typval_T *argvars, typval_T *rettv, int type)
+{
+#ifdef FEAT_LIBCALL
+ char_u *string_in;
+ char_u **string_result;
+ int nr_result;
+#endif
+
+ rettv->v_type = type;
+ if (type != VAR_NUMBER)
+ rettv->vval.v_string = NULL;
+
+ if (check_restricted() || check_secure())
+ return;
+
+#ifdef FEAT_LIBCALL
+ /* The first two args must be strings, otherwise its meaningless */
+ if (argvars[0].v_type == VAR_STRING && argvars[1].v_type == VAR_STRING) {
+ string_in = NULL;
+ if (argvars[2].v_type == VAR_STRING)
+ string_in = argvars[2].vval.v_string;
+ if (type == VAR_NUMBER)
+ string_result = NULL;
+ else
+ string_result = &rettv->vval.v_string;
+ if (mch_libcall(argvars[0].vval.v_string,
+ argvars[1].vval.v_string,
+ string_in,
+ argvars[2].vval.v_number,
+ string_result,
+ &nr_result) == OK
+ && type == VAR_NUMBER)
+ rettv->vval.v_number = nr_result;
+ }
+#endif
+}
+
+/*
+ * "libcall()" function
+ */
+static void f_libcall(typval_T *argvars, typval_T *rettv)
+{
+ libcall_common(argvars, rettv, VAR_STRING);
+}
+
+/*
+ * "libcallnr()" function
+ */
+static void f_libcallnr(typval_T *argvars, typval_T *rettv)
+{
+ libcall_common(argvars, rettv, VAR_NUMBER);
+}
+
+/*
+ * "line(string)" function
+ */
+static void f_line(typval_T *argvars, typval_T *rettv)
+{
+ linenr_T lnum = 0;
+ pos_T *fp;
+ int fnum;
+
+ fp = var2fpos(&argvars[0], TRUE, &fnum);
+ if (fp != NULL)
+ lnum = fp->lnum;
+ rettv->vval.v_number = lnum;
+}
+
+/*
+ * "line2byte(lnum)" function
+ */
+static void f_line2byte(typval_T *argvars, typval_T *rettv)
+{
+ linenr_T lnum;
+
+ lnum = get_tv_lnum(argvars);
+ if (lnum < 1 || lnum > curbuf->b_ml.ml_line_count + 1)
+ rettv->vval.v_number = -1;
+ else
+ rettv->vval.v_number = ml_find_line_or_offset(curbuf, lnum, NULL);
+ if (rettv->vval.v_number >= 0)
+ ++rettv->vval.v_number;
+}
+
+/*
+ * "lispindent(lnum)" function
+ */
+static void f_lispindent(typval_T *argvars, typval_T *rettv)
+{
+ pos_T pos;
+ linenr_T lnum;
+
+ pos = curwin->w_cursor;
+ lnum = get_tv_lnum(argvars);
+ if (lnum >= 1 && lnum <= curbuf->b_ml.ml_line_count) {
+ curwin->w_cursor.lnum = lnum;
+ rettv->vval.v_number = get_lisp_indent();
+ curwin->w_cursor = pos;
+ } else
+ rettv->vval.v_number = -1;
+}
+
+/*
+ * "localtime()" function
+ */
+static void f_localtime(typval_T *argvars, typval_T *rettv)
+{
+ rettv->vval.v_number = (varnumber_T)time(NULL);
+}
+
+static void get_maparg(typval_T *argvars, typval_T *rettv, int exact);
+
+static void get_maparg(typval_T *argvars, typval_T *rettv, int exact)
+{
+ char_u *keys;
+ char_u *which;
+ char_u buf[NUMBUFLEN];
+ char_u *keys_buf = NULL;
+ char_u *rhs;
+ int mode;
+ int abbr = FALSE;
+ int get_dict = FALSE;
+ mapblock_T *mp;
+ int buffer_local;
+
+ /* return empty string for failure */
+ rettv->v_type = VAR_STRING;
+ rettv->vval.v_string = NULL;
+
+ keys = get_tv_string(&argvars[0]);
+ if (*keys == NUL)
+ return;
+
+ if (argvars[1].v_type != VAR_UNKNOWN) {
+ which = get_tv_string_buf_chk(&argvars[1], buf);
+ if (argvars[2].v_type != VAR_UNKNOWN) {
+ abbr = get_tv_number(&argvars[2]);
+ if (argvars[3].v_type != VAR_UNKNOWN)
+ get_dict = get_tv_number(&argvars[3]);
+ }
+ } else
+ which = (char_u *)"";
+ if (which == NULL)
+ return;
+
+ mode = get_map_mode(&which, 0);
+
+ keys = replace_termcodes(keys, &keys_buf, TRUE, TRUE, FALSE);
+ rhs = check_map(keys, mode, exact, FALSE, abbr, &mp, &buffer_local);
+ free(keys_buf);
+
+ if (!get_dict) {
+ /* Return a string. */
+ if (rhs != NULL)
+ rettv->vval.v_string = str2special_save(rhs, FALSE);
+
+ } else if (rettv_dict_alloc(rettv) != FAIL && rhs != NULL) {
+ /* Return a dictionary. */
+ char_u *lhs = str2special_save(mp->m_keys, TRUE);
+ char_u *mapmode = map_mode_to_chars(mp->m_mode);
+ dict_T *dict = rettv->vval.v_dict;
+
+ dict_add_nr_str(dict, "lhs", 0L, lhs);
+ dict_add_nr_str(dict, "rhs", 0L, mp->m_orig_str);
+ dict_add_nr_str(dict, "noremap", mp->m_noremap ? 1L : 0L, NULL);
+ dict_add_nr_str(dict, "expr", mp->m_expr ? 1L : 0L, NULL);
+ dict_add_nr_str(dict, "silent", mp->m_silent ? 1L : 0L, NULL);
+ dict_add_nr_str(dict, "sid", (long)mp->m_script_ID, NULL);
+ dict_add_nr_str(dict, "buffer", (long)buffer_local, NULL);
+ dict_add_nr_str(dict, "nowait", mp->m_nowait ? 1L : 0L, NULL);
+ dict_add_nr_str(dict, "mode", 0L, mapmode);
+
+ free(lhs);
+ free(mapmode);
+ }
+}
+
+/*
+ * "log()" function
+ */
+static void f_log(typval_T *argvars, typval_T *rettv)
+{
+ float_T f;
+
+ rettv->v_type = VAR_FLOAT;
+ if (get_float_arg(argvars, &f) == OK)
+ rettv->vval.v_float = log(f);
+ else
+ rettv->vval.v_float = 0.0;
+}
+
+/*
+ * "log10()" function
+ */
+static void f_log10(typval_T *argvars, typval_T *rettv)
+{
+ float_T f;
+
+ rettv->v_type = VAR_FLOAT;
+ if (get_float_arg(argvars, &f) == OK)
+ rettv->vval.v_float = log10(f);
+ else
+ rettv->vval.v_float = 0.0;
+}
+
+
+/*
+ * "map()" function
+ */
+static void f_map(typval_T *argvars, typval_T *rettv)
+{
+ filter_map(argvars, rettv, TRUE);
+}
+
+/*
+ * "maparg()" function
+ */
+static void f_maparg(typval_T *argvars, typval_T *rettv)
+{
+ get_maparg(argvars, rettv, TRUE);
+}
+
+/*
+ * "mapcheck()" function
+ */
+static void f_mapcheck(typval_T *argvars, typval_T *rettv)
+{
+ get_maparg(argvars, rettv, FALSE);
+}
+
+static void find_some_match(typval_T *argvars, typval_T *rettv, int start);
+
+static void find_some_match(typval_T *argvars, typval_T *rettv, int type)
+{
+ char_u *str = NULL;
+ long len = 0;
+ char_u *expr = NULL;
+ char_u *pat;
+ regmatch_T regmatch;
+ char_u patbuf[NUMBUFLEN];
+ char_u strbuf[NUMBUFLEN];
+ char_u *save_cpo;
+ long start = 0;
+ long nth = 1;
+ colnr_T startcol = 0;
+ int match = 0;
+ list_T *l = NULL;
+ listitem_T *li = NULL;
+ long idx = 0;
+ char_u *tofree = NULL;
+
+ /* Make 'cpoptions' empty, the 'l' flag should not be used here. */
+ save_cpo = p_cpo;
+ p_cpo = (char_u *)"";
+
+ rettv->vval.v_number = -1;
+ if (type == 3) {
+ /* return empty list when there are no matches */
+ rettv_list_alloc(rettv);
+ } else if (type == 2) {
+ rettv->v_type = VAR_STRING;
+ rettv->vval.v_string = NULL;
+ }
+
+ if (argvars[0].v_type == VAR_LIST) {
+ if ((l = argvars[0].vval.v_list) == NULL)
+ goto theend;
+ li = l->lv_first;
+ } else {
+ expr = str = get_tv_string(&argvars[0]);
+ len = (long)STRLEN(str);
+ }
+
+ pat = get_tv_string_buf_chk(&argvars[1], patbuf);
+ if (pat == NULL)
+ goto theend;
+
+ if (argvars[2].v_type != VAR_UNKNOWN) {
+ int error = FALSE;
+
+ start = get_tv_number_chk(&argvars[2], &error);
+ if (error)
+ goto theend;
+ if (l != NULL) {
+ li = list_find(l, start);
+ if (li == NULL)
+ goto theend;
+ idx = l->lv_idx; /* use the cached index */
+ } else {
+ if (start < 0)
+ start = 0;
+ if (start > len)
+ goto theend;
+ /* When "count" argument is there ignore matches before "start",
+ * otherwise skip part of the string. Differs when pattern is "^"
+ * or "\<". */
+ if (argvars[3].v_type != VAR_UNKNOWN)
+ startcol = start;
+ else {
+ str += start;
+ len -= start;
+ }
+ }
+
+ if (argvars[3].v_type != VAR_UNKNOWN)
+ nth = get_tv_number_chk(&argvars[3], &error);
+ if (error)
+ goto theend;
+ }
+
+ regmatch.regprog = vim_regcomp(pat, RE_MAGIC + RE_STRING);
+ if (regmatch.regprog != NULL) {
+ regmatch.rm_ic = p_ic;
+
+ for (;; ) {
+ if (l != NULL) {
+ if (li == NULL) {
+ match = FALSE;
+ break;
+ }
+ free(tofree);
+ str = echo_string(&li->li_tv, &tofree, strbuf, 0);
+ if (str == NULL)
+ break;
+ }
+
+ match = vim_regexec_nl(&regmatch, str, (colnr_T)startcol);
+
+ if (match && --nth <= 0)
+ break;
+ if (l == NULL && !match)
+ break;
+
+ /* Advance to just after the match. */
+ if (l != NULL) {
+ li = li->li_next;
+ ++idx;
+ } else {
+ startcol = (colnr_T)(regmatch.startp[0]
+ + (*mb_ptr2len)(regmatch.startp[0]) - str);
+ if (startcol > (colnr_T)len || str + startcol <= regmatch.startp[0]) {
+ match = FALSE;
+ break;
+ }
+ }
+ }
+
+ if (match) {
+ if (type == 3) {
+ int i;
+
+ /* return list with matched string and submatches */
+ for (i = 0; i < NSUBEXP; ++i) {
+ if (regmatch.endp[i] == NULL) {
+ list_append_string(rettv->vval.v_list, (char_u *)"", 0);
+ } else {
+ list_append_string(rettv->vval.v_list,
+ regmatch.startp[i],
+ (int)(regmatch.endp[i] - regmatch.startp[i]));
+ }
+ }
+ } else if (type == 2) {
+ /* return matched string */
+ if (l != NULL)
+ copy_tv(&li->li_tv, rettv);
+ else
+ rettv->vval.v_string = vim_strnsave(regmatch.startp[0],
+ (int)(regmatch.endp[0] - regmatch.startp[0]));
+ } else if (l != NULL)
+ rettv->vval.v_number = idx;
+ else {
+ if (type != 0)
+ rettv->vval.v_number =
+ (varnumber_T)(regmatch.startp[0] - str);
+ else
+ rettv->vval.v_number =
+ (varnumber_T)(regmatch.endp[0] - str);
+ rettv->vval.v_number += (varnumber_T)(str - expr);
+ }
+ }
+ vim_regfree(regmatch.regprog);
+ }
+
+theend:
+ free(tofree);
+ p_cpo = save_cpo;
+}
+
+/*
+ * "match()" function
+ */
+static void f_match(typval_T *argvars, typval_T *rettv)
+{
+ find_some_match(argvars, rettv, 1);
+}
+
+/*
+ * "matchadd()" function
+ */
+static void f_matchadd(typval_T *argvars, typval_T *rettv)
+{
+ char_u buf[NUMBUFLEN];
+ char_u *grp = get_tv_string_buf_chk(&argvars[0], buf); /* group */
+ char_u *pat = get_tv_string_buf_chk(&argvars[1], buf); /* pattern */
+ int prio = 10; /* default priority */
+ int id = -1;
+ int error = FALSE;
+
+ rettv->vval.v_number = -1;
+
+ if (grp == NULL || pat == NULL)
+ return;
+ if (argvars[2].v_type != VAR_UNKNOWN) {
+ prio = get_tv_number_chk(&argvars[2], &error);
+ if (argvars[3].v_type != VAR_UNKNOWN)
+ id = get_tv_number_chk(&argvars[3], &error);
+ }
+ if (error == TRUE)
+ return;
+ if (id >= 1 && id <= 3) {
+ EMSGN("E798: ID is reserved for \":match\": %" PRId64, id);
+ return;
+ }
+
+ rettv->vval.v_number = match_add(curwin, grp, pat, prio, id);
+}
+
+/*
+ * "matcharg()" function
+ */
+static void f_matcharg(typval_T *argvars, typval_T *rettv)
+{
+ rettv_list_alloc(rettv);
+
+ int id = get_tv_number(&argvars[0]);
+
+ if (id >= 1 && id <= 3) {
+ matchitem_T *m;
+
+ if ((m = (matchitem_T *)get_match(curwin, id)) != NULL) {
+ list_append_string(rettv->vval.v_list, syn_id2name(m->hlg_id), -1);
+ list_append_string(rettv->vval.v_list, m->pattern, -1);
+ } else {
+ list_append_string(rettv->vval.v_list, NULL, -1);
+ list_append_string(rettv->vval.v_list, NULL, -1);
+ }
+ }
+}
+
+/*
+ * "matchdelete()" function
+ */
+static void f_matchdelete(typval_T *argvars, typval_T *rettv)
+{
+ rettv->vval.v_number = match_delete(curwin,
+ (int)get_tv_number(&argvars[0]), TRUE);
+}
+
+/*
+ * "matchend()" function
+ */
+static void f_matchend(typval_T *argvars, typval_T *rettv)
+{
+ find_some_match(argvars, rettv, 0);
+}
+
+/*
+ * "matchlist()" function
+ */
+static void f_matchlist(typval_T *argvars, typval_T *rettv)
+{
+ find_some_match(argvars, rettv, 3);
+}
+
+/*
+ * "matchstr()" function
+ */
+static void f_matchstr(typval_T *argvars, typval_T *rettv)
+{
+ find_some_match(argvars, rettv, 2);
+}
+
+static void max_min(typval_T *argvars, typval_T *rettv, int domax);
+
+static void max_min(typval_T *argvars, typval_T *rettv, int domax)
+{
+ long n = 0;
+ long i;
+ int error = FALSE;
+
+ if (argvars[0].v_type == VAR_LIST) {
+ list_T *l;
+ listitem_T *li;
+
+ l = argvars[0].vval.v_list;
+ if (l != NULL) {
+ li = l->lv_first;
+ if (li != NULL) {
+ n = get_tv_number_chk(&li->li_tv, &error);
+ for (;; ) {
+ li = li->li_next;
+ if (li == NULL)
+ break;
+ i = get_tv_number_chk(&li->li_tv, &error);
+ if (domax ? i > n : i < n)
+ n = i;
+ }
+ }
+ }
+ } else if (argvars[0].v_type == VAR_DICT) {
+ dict_T *d;
+ int first = TRUE;
+ hashitem_T *hi;
+ int todo;
+
+ d = argvars[0].vval.v_dict;
+ if (d != NULL) {
+ todo = (int)d->dv_hashtab.ht_used;
+ for (hi = d->dv_hashtab.ht_array; todo > 0; ++hi) {
+ if (!HASHITEM_EMPTY(hi)) {
+ --todo;
+ i = get_tv_number_chk(&HI2DI(hi)->di_tv, &error);
+ if (first) {
+ n = i;
+ first = FALSE;
+ } else if (domax ? i > n : i < n)
+ n = i;
+ }
+ }
+ }
+ } else
+ EMSG(_(e_listdictarg));
+ rettv->vval.v_number = error ? 0 : n;
+}
+
+/*
+ * "max()" function
+ */
+static void f_max(typval_T *argvars, typval_T *rettv)
+{
+ max_min(argvars, rettv, TRUE);
+}
+
+/*
+ * "min()" function
+ */
+static void f_min(typval_T *argvars, typval_T *rettv)
+{
+ max_min(argvars, rettv, FALSE);
+}
+
+static int mkdir_recurse(char_u *dir, int prot);
+
+/*
+ * Create the directory in which "dir" is located, and higher levels when
+ * needed.
+ */
+static int mkdir_recurse(char_u *dir, int prot)
+{
+ char_u *p;
+ char_u *updir;
+ int r = FAIL;
+
+ /* Get end of directory name in "dir".
+ * We're done when it's "/" or "c:/". */
+ p = path_tail_with_sep(dir);
+ if (p <= get_past_head(dir))
+ return OK;
+
+ /* If the directory exists we're done. Otherwise: create it.*/
+ updir = vim_strnsave(dir, (int)(p - dir));
+ if (updir == NULL)
+ return FAIL;
+ if (os_isdir(updir))
+ r = OK;
+ else if (mkdir_recurse(updir, prot) == OK)
+ r = vim_mkdir_emsg(updir, prot);
+ free(updir);
+ return r;
+}
+
+/*
+ * "mkdir()" function
+ */
+static void f_mkdir(typval_T *argvars, typval_T *rettv)
+{
+ char_u *dir;
+ char_u buf[NUMBUFLEN];
+ int prot = 0755;
+
+ rettv->vval.v_number = FAIL;
+ if (check_restricted() || check_secure())
+ return;
+
+ dir = get_tv_string_buf(&argvars[0], buf);
+ if (*dir == NUL)
+ rettv->vval.v_number = FAIL;
+ else {
+ if (*path_tail(dir) == NUL)
+ /* remove trailing slashes */
+ *path_tail_with_sep(dir) = NUL;
+
+ if (argvars[1].v_type != VAR_UNKNOWN) {
+ if (argvars[2].v_type != VAR_UNKNOWN)
+ prot = get_tv_number_chk(&argvars[2], NULL);
+ if (prot != -1 && STRCMP(get_tv_string(&argvars[1]), "p") == 0)
+ mkdir_recurse(dir, prot);
+ }
+ rettv->vval.v_number = prot == -1 ? FAIL : vim_mkdir_emsg(dir, prot);
+ }
+}
+
+/*
+ * "mode()" function
+ */
+static void f_mode(typval_T *argvars, typval_T *rettv)
+{
+ char_u buf[3];
+
+ buf[1] = NUL;
+ buf[2] = NUL;
+
+ if (VIsual_active) {
+ if (VIsual_select)
+ buf[0] = VIsual_mode + 's' - 'v';
+ else
+ buf[0] = VIsual_mode;
+ } else if (State == HITRETURN || State == ASKMORE || State == SETWSIZE
+ || State == CONFIRM) {
+ buf[0] = 'r';
+ if (State == ASKMORE)
+ buf[1] = 'm';
+ else if (State == CONFIRM)
+ buf[1] = '?';
+ } else if (State == EXTERNCMD)
+ buf[0] = '!';
+ else if (State & INSERT) {
+ if (State & VREPLACE_FLAG) {
+ buf[0] = 'R';
+ buf[1] = 'v';
+ } else if (State & REPLACE_FLAG)
+ buf[0] = 'R';
+ else
+ buf[0] = 'i';
+ } else if (State & CMDLINE) {
+ buf[0] = 'c';
+ if (exmode_active)
+ buf[1] = 'v';
+ } else if (exmode_active) {
+ buf[0] = 'c';
+ buf[1] = 'e';
+ } else {
+ buf[0] = 'n';
+ if (finish_op)
+ buf[1] = 'o';
+ }
+
+ /* Clear out the minor mode when the argument is not a non-zero number or
+ * non-empty string. */
+ if (!non_zero_arg(&argvars[0]))
+ buf[1] = NUL;
+
+ rettv->vval.v_string = vim_strsave(buf);
+ rettv->v_type = VAR_STRING;
+}
+
+
+/*
+ * "nextnonblank()" function
+ */
+static void f_nextnonblank(typval_T *argvars, typval_T *rettv)
+{
+ linenr_T lnum;
+
+ for (lnum = get_tv_lnum(argvars);; ++lnum) {
+ if (lnum < 0 || lnum > curbuf->b_ml.ml_line_count) {
+ lnum = 0;
+ break;
+ }
+ if (*skipwhite(ml_get(lnum)) != NUL)
+ break;
+ }
+ rettv->vval.v_number = lnum;
+}
+
+/*
+ * "nr2char()" function
+ */
+static void f_nr2char(typval_T *argvars, typval_T *rettv)
+{
+ char_u buf[NUMBUFLEN];
+
+ if (has_mbyte) {
+ int utf8 = 0;
+
+ if (argvars[1].v_type != VAR_UNKNOWN)
+ utf8 = get_tv_number_chk(&argvars[1], NULL);
+ if (utf8)
+ buf[(*utf_char2bytes)((int)get_tv_number(&argvars[0]), buf)] = NUL;
+ else
+ buf[(*mb_char2bytes)((int)get_tv_number(&argvars[0]), buf)] = NUL;
+ } else {
+ buf[0] = (char_u)get_tv_number(&argvars[0]);
+ buf[1] = NUL;
+ }
+ rettv->v_type = VAR_STRING;
+ rettv->vval.v_string = vim_strsave(buf);
+}
+
+/*
+ * "or(expr, expr)" function
+ */
+static void f_or(typval_T *argvars, typval_T *rettv)
+{
+ rettv->vval.v_number = get_tv_number_chk(&argvars[0], NULL)
+ | get_tv_number_chk(&argvars[1], NULL);
+}
+
+/*
+ * "pathshorten()" function
+ */
+static void f_pathshorten(typval_T *argvars, typval_T *rettv)
+{
+ char_u *p;
+
+ rettv->v_type = VAR_STRING;
+ p = get_tv_string_chk(&argvars[0]);
+ if (p == NULL)
+ rettv->vval.v_string = NULL;
+ else {
+ p = vim_strsave(p);
+ rettv->vval.v_string = p;
+ if (p != NULL)
+ shorten_dir(p);
+ }
+}
+
+/*
+ * "pow()" function
+ */
+static void f_pow(typval_T *argvars, typval_T *rettv)
+{
+ float_T fx, fy;
+
+ rettv->v_type = VAR_FLOAT;
+ if (get_float_arg(argvars, &fx) == OK
+ && get_float_arg(&argvars[1], &fy) == OK)
+ rettv->vval.v_float = pow(fx, fy);
+ else
+ rettv->vval.v_float = 0.0;
+}
+
+/*
+ * "prevnonblank()" function
+ */
+static void f_prevnonblank(typval_T *argvars, typval_T *rettv)
+{
+ linenr_T lnum;
+
+ lnum = get_tv_lnum(argvars);
+ if (lnum < 1 || lnum > curbuf->b_ml.ml_line_count)
+ lnum = 0;
+ else
+ while (lnum >= 1 && *skipwhite(ml_get(lnum)) == NUL)
+ --lnum;
+ rettv->vval.v_number = lnum;
+}
+
+/* This dummy va_list is here because:
+ * - passing a NULL pointer doesn't work when va_list isn't a pointer
+ * - locally in the function results in a "used before set" warning
+ * - using va_start() to initialize it gives "function with fixed args" error */
+static va_list ap;
+
+/*
+ * "printf()" function
+ */
+static void f_printf(typval_T *argvars, typval_T *rettv)
+{
+ rettv->v_type = VAR_STRING;
+ rettv->vval.v_string = NULL;
+ {
+ char_u buf[NUMBUFLEN];
+ int len;
+ char_u *s;
+ int saved_did_emsg = did_emsg;
+ char *fmt;
+
+ /* Get the required length, allocate the buffer and do it for real. */
+ did_emsg = FALSE;
+ fmt = (char *)get_tv_string_buf(&argvars[0], buf);
+ len = vim_vsnprintf(NULL, 0, fmt, ap, argvars + 1);
+ if (!did_emsg) {
+ s = alloc(len + 1);
+ if (s != NULL) {
+ rettv->vval.v_string = s;
+ (void)vim_vsnprintf((char *)s, len + 1, fmt, ap, argvars + 1);
+ }
+ }
+ did_emsg |= saved_did_emsg;
+ }
+}
+
+/*
+ * "pumvisible()" function
+ */
+static void f_pumvisible(typval_T *argvars, typval_T *rettv)
+{
+ if (pum_visible())
+ rettv->vval.v_number = 1;
+}
+
+
+
+/*
+ * "range()" function
+ */
+static void f_range(typval_T *argvars, typval_T *rettv)
+{
+ long start;
+ long end;
+ long stride = 1;
+ long i;
+ int error = FALSE;
+
+ start = get_tv_number_chk(&argvars[0], &error);
+ if (argvars[1].v_type == VAR_UNKNOWN) {
+ end = start - 1;
+ start = 0;
+ } else {
+ end = get_tv_number_chk(&argvars[1], &error);
+ if (argvars[2].v_type != VAR_UNKNOWN)
+ stride = get_tv_number_chk(&argvars[2], &error);
+ }
+
+ if (error)
+ return; /* type error; errmsg already given */
+ if (stride == 0)
+ EMSG(_("E726: Stride is zero"));
+ else if (stride > 0 ? end + 1 < start : end - 1 > start)
+ EMSG(_("E727: Start past end"));
+ else {
+ rettv_list_alloc(rettv);
+ for (i = start; stride > 0 ? i <= end : i >= end; i += stride) {
+ list_append_number(rettv->vval.v_list, (varnumber_T)i);
+ }
+ }
+}
+
+/*
+ * "readfile()" function
+ */
+static void f_readfile(typval_T *argvars, typval_T *rettv)
+{
+ int binary = FALSE;
+ int failed = FALSE;
+ char_u *fname;
+ FILE *fd;
+ char_u buf[(IOSIZE/256)*256]; /* rounded to avoid odd + 1 */
+ int io_size = sizeof(buf);
+ int readlen; /* size of last fread() */
+ char_u *prev = NULL; /* previously read bytes, if any */
+ long prevlen = 0; /* length of data in prev */
+ long prevsize = 0; /* size of prev buffer */
+ long maxline = MAXLNUM;
+ long cnt = 0;
+ char_u *p; /* position in buf */
+ char_u *start; /* start of current line */
+
+ if (argvars[1].v_type != VAR_UNKNOWN) {
+ if (STRCMP(get_tv_string(&argvars[1]), "b") == 0)
+ binary = TRUE;
+ if (argvars[2].v_type != VAR_UNKNOWN)
+ maxline = get_tv_number(&argvars[2]);
+ }
+
+ rettv_list_alloc(rettv);
+
+ /* Always open the file in binary mode, library functions have a mind of
+ * their own about CR-LF conversion. */
+ fname = get_tv_string(&argvars[0]);
+ if (*fname == NUL || (fd = mch_fopen((char *)fname, READBIN)) == NULL) {
+ EMSG2(_(e_notopen), *fname == NUL ? (char_u *)_("<empty>") : fname);
+ return;
+ }
+
+ while (cnt < maxline || maxline < 0) {
+ readlen = (int)fread(buf, 1, io_size, fd);
+
+ /* This for loop processes what was read, but is also entered at end
+ * of file so that either:
+ * - an incomplete line gets written
+ * - a "binary" file gets an empty line at the end if it ends in a
+ * newline. */
+ for (p = buf, start = buf;
+ p < buf + readlen || (readlen <= 0 && (prevlen > 0 || binary));
+ ++p) {
+ if (*p == '\n' || readlen <= 0) {
+ listitem_T *li;
+ char_u *s = NULL;
+ long_u len = p - start;
+
+ /* Finished a line. Remove CRs before NL. */
+ if (readlen > 0 && !binary) {
+ while (len > 0 && start[len - 1] == '\r')
+ --len;
+ /* removal may cross back to the "prev" string */
+ if (len == 0)
+ while (prevlen > 0 && prev[prevlen - 1] == '\r')
+ --prevlen;
+ }
+ if (prevlen == 0)
+ s = vim_strnsave(start, (int)len);
+ else {
+ /* Change "prev" buffer to be the right size. This way
+ * the bytes are only copied once, and very long lines are
+ * allocated only once. */
+ if ((s = xrealloc(prev, prevlen + len + 1)) != NULL) {
+ memmove(s + prevlen, start, len);
+ s[prevlen + len] = NUL;
+ prev = NULL; /* the list will own the string */
+ prevlen = prevsize = 0;
+ }
+ }
+ if (s == NULL) {
+ do_outofmem_msg((long_u) prevlen + len + 1);
+ failed = TRUE;
+ break;
+ }
+
+ if ((li = listitem_alloc()) == NULL) {
+ free(s);
+ failed = TRUE;
+ break;
+ }
+ li->li_tv.v_type = VAR_STRING;
+ li->li_tv.v_lock = 0;
+ li->li_tv.vval.v_string = s;
+ list_append(rettv->vval.v_list, li);
+
+ start = p + 1; /* step over newline */
+ if ((++cnt >= maxline && maxline >= 0) || readlen <= 0)
+ break;
+ } else if (*p == NUL)
+ *p = '\n';
+ /* Check for utf8 "bom"; U+FEFF is encoded as EF BB BF. Do this
+ * when finding the BF and check the previous two bytes. */
+ else if (*p == 0xbf && enc_utf8 && !binary) {
+ /* Find the two bytes before the 0xbf. If p is at buf, or buf
+ * + 1, these may be in the "prev" string. */
+ char_u back1 = p >= buf + 1 ? p[-1]
+ : prevlen >= 1 ? prev[prevlen - 1] : NUL;
+ char_u back2 = p >= buf + 2 ? p[-2]
+ : p == buf + 1 && prevlen >= 1 ? prev[prevlen - 1]
+ : prevlen >= 2 ? prev[prevlen - 2] : NUL;
+
+ if (back2 == 0xef && back1 == 0xbb) {
+ char_u *dest = p - 2;
+
+ /* Usually a BOM is at the beginning of a file, and so at
+ * the beginning of a line; then we can just step over it.
+ */
+ if (start == dest)
+ start = p + 1;
+ else {
+ /* have to shuffle buf to close gap */
+ int adjust_prevlen = 0;
+
+ if (dest < buf) {
+ adjust_prevlen = (int)(buf - dest); /* must be 1 or 2 */
+ dest = buf;
+ }
+ if (readlen > p - buf + 1)
+ memmove(dest, p + 1, readlen - (p - buf) - 1);
+ readlen -= 3 - adjust_prevlen;
+ prevlen -= adjust_prevlen;
+ p = dest - 1;
+ }
+ }
+ }
+ } /* for */
+
+ if (failed || (cnt >= maxline && maxline >= 0) || readlen <= 0)
+ break;
+ if (start < p) {
+ /* There's part of a line in buf, store it in "prev". */
+ if (p - start + prevlen >= prevsize) {
+ /* need bigger "prev" buffer */
+ char_u *newprev;
+
+ /* A common use case is ordinary text files and "prev" gets a
+ * fragment of a line, so the first allocation is made
+ * small, to avoid repeatedly 'allocing' large and
+ * 'reallocing' small. */
+ if (prevsize == 0)
+ prevsize = (long)(p - start);
+ else {
+ long grow50pc = (prevsize * 3) / 2;
+ long growmin = (long)((p - start) * 2 + prevlen);
+ prevsize = grow50pc > growmin ? grow50pc : growmin;
+ }
+ newprev = prev == NULL ? alloc(prevsize)
+ : xrealloc(prev, prevsize);
+ if (newprev == NULL) {
+ do_outofmem_msg((long_u)prevsize);
+ failed = TRUE;
+ break;
+ }
+ prev = newprev;
+ }
+ /* Add the line part to end of "prev". */
+ memmove(prev + prevlen, start, p - start);
+ prevlen += (long)(p - start);
+ }
+ } /* while */
+
+ /*
+ * For a negative line count use only the lines at the end of the file,
+ * free the rest.
+ */
+ if (!failed && maxline < 0)
+ while (cnt > -maxline) {
+ listitem_remove(rettv->vval.v_list, rettv->vval.v_list->lv_first);
+ --cnt;
+ }
+
+ if (failed) {
+ list_free(rettv->vval.v_list, TRUE);
+ /* readfile doc says an empty list is returned on error */
+ rettv->vval.v_list = list_alloc();
+ }
+
+ free(prev);
+ fclose(fd);
+}
+
+static int list2proftime(typval_T *arg, proftime_T *tm);
+
+/*
+ * Convert a List to proftime_T.
+ * Return FAIL when there is something wrong.
+ */
+static int list2proftime(arg, tm)
+typval_T *arg;
+proftime_T *tm;
+{
+ long n1, n2;
+ int error = FALSE;
+
+ if (arg->v_type != VAR_LIST || arg->vval.v_list == NULL
+ || arg->vval.v_list->lv_len != 2)
+ return FAIL;
+ n1 = list_find_nr(arg->vval.v_list, 0L, &error);
+ n2 = list_find_nr(arg->vval.v_list, 1L, &error);
+ tm->tv_sec = n1;
+ tm->tv_usec = n2;
+ return error ? FAIL : OK;
+}
+
+/*
+ * "reltime()" function
+ */
+static void f_reltime(typval_T *argvars, typval_T *rettv)
+{
+ proftime_T res;
+ proftime_T start;
+
+ if (argvars[0].v_type == VAR_UNKNOWN) {
+ /* No arguments: get current time. */
+ profile_start(&res);
+ } else if (argvars[1].v_type == VAR_UNKNOWN) {
+ if (list2proftime(&argvars[0], &res) == FAIL)
+ return;
+ profile_end(&res);
+ } else {
+ /* Two arguments: compute the difference. */
+ if (list2proftime(&argvars[0], &start) == FAIL
+ || list2proftime(&argvars[1], &res) == FAIL)
+ return;
+ profile_sub(&res, &start);
+ }
+
+ rettv_list_alloc(rettv);
+ long n1 = res.tv_sec;
+ long n2 = res.tv_usec;
+ list_append_number(rettv->vval.v_list, (varnumber_T)n1);
+ list_append_number(rettv->vval.v_list, (varnumber_T)n2);
+}
+
+/*
+ * "reltimestr()" function
+ */
+static void f_reltimestr(typval_T *argvars, typval_T *rettv)
+{
+ proftime_T tm;
+
+ rettv->v_type = VAR_STRING;
+ rettv->vval.v_string = NULL;
+ if (list2proftime(&argvars[0], &tm) == OK)
+ rettv->vval.v_string = vim_strsave((char_u *)profile_msg(&tm));
+}
+
+
+
+/*
+ * "remote_expr()" function
+ */
+static void f_remote_expr(typval_T *argvars, typval_T *rettv)
+{
+ rettv->v_type = VAR_STRING;
+ rettv->vval.v_string = NULL;
+}
+
+/*
+ * "remote_foreground()" function
+ */
+static void f_remote_foreground(typval_T *argvars, typval_T *rettv)
+{
+}
+
+static void f_remote_peek(typval_T *argvars, typval_T *rettv)
+{
+ rettv->vval.v_number = -1;
+}
+
+static void f_remote_read(typval_T *argvars, typval_T *rettv)
+{
+ char_u *r = NULL;
+
+ rettv->v_type = VAR_STRING;
+ rettv->vval.v_string = r;
+}
+
+/*
+ * "remote_send()" function
+ */
+static void f_remote_send(typval_T *argvars, typval_T *rettv)
+{
+ rettv->v_type = VAR_STRING;
+ rettv->vval.v_string = NULL;
+}
+
+/*
+ * "remove()" function
+ */
+static void f_remove(typval_T *argvars, typval_T *rettv)
+{
+ list_T *l;
+ listitem_T *item, *item2;
+ listitem_T *li;
+ long idx;
+ long end;
+ char_u *key;
+ dict_T *d;
+ dictitem_T *di;
+ char *arg_errmsg = N_("remove() argument");
+
+ if (argvars[0].v_type == VAR_DICT) {
+ if (argvars[2].v_type != VAR_UNKNOWN)
+ EMSG2(_(e_toomanyarg), "remove()");
+ else if ((d = argvars[0].vval.v_dict) != NULL
+ && !tv_check_lock(d->dv_lock, (char_u *)_(arg_errmsg))) {
+ key = get_tv_string_chk(&argvars[1]);
+ if (key != NULL) {
+ di = dict_find(d, key, -1);
+ if (di == NULL)
+ EMSG2(_(e_dictkey), key);
+ else {
+ *rettv = di->di_tv;
+ init_tv(&di->di_tv);
+ dictitem_remove(d, di);
+ }
+ }
+ }
+ } else if (argvars[0].v_type != VAR_LIST)
+ EMSG2(_(e_listdictarg), "remove()");
+ else if ((l = argvars[0].vval.v_list) != NULL
+ && !tv_check_lock(l->lv_lock, (char_u *)_(arg_errmsg))) {
+ int error = FALSE;
+
+ idx = get_tv_number_chk(&argvars[1], &error);
+ if (error)
+ ; /* type error: do nothing, errmsg already given */
+ else if ((item = list_find(l, idx)) == NULL)
+ EMSGN(_(e_listidx), idx);
+ else {
+ if (argvars[2].v_type == VAR_UNKNOWN) {
+ /* Remove one item, return its value. */
+ list_remove(l, item, item);
+ *rettv = item->li_tv;
+ free(item);
+ } else {
+ /* Remove range of items, return list with values. */
+ end = get_tv_number_chk(&argvars[2], &error);
+ if (error)
+ ; /* type error: do nothing */
+ else if ((item2 = list_find(l, end)) == NULL)
+ EMSGN(_(e_listidx), end);
+ else {
+ int cnt = 0;
+
+ for (li = item; li != NULL; li = li->li_next) {
+ ++cnt;
+ if (li == item2)
+ break;
+ }
+ if (li == NULL) /* didn't find "item2" after "item" */
+ EMSG(_(e_invrange));
+ else {
+ list_remove(l, item, item2);
+ rettv_list_alloc(rettv);
+ l = rettv->vval.v_list;
+ l->lv_first = item;
+ l->lv_last = item2;
+ item->li_prev = NULL;
+ item2->li_next = NULL;
+ l->lv_len = cnt;
+ }
+ }
+ }
+ }
+ }
+}
+
+/*
+ * "rename({from}, {to})" function
+ */
+static void f_rename(typval_T *argvars, typval_T *rettv)
+{
+ char_u buf[NUMBUFLEN];
+
+ if (check_restricted() || check_secure())
+ rettv->vval.v_number = -1;
+ else
+ rettv->vval.v_number = vim_rename(get_tv_string(&argvars[0]),
+ get_tv_string_buf(&argvars[1], buf));
+}
+
+/*
+ * "repeat()" function
+ */
+static void f_repeat(typval_T *argvars, typval_T *rettv)
+{
+ char_u *p;
+ int n;
+ int slen;
+ int len;
+ char_u *r;
+ int i;
+
+ n = get_tv_number(&argvars[1]);
+ if (argvars[0].v_type == VAR_LIST) {
+ rettv_list_alloc(rettv);
+ if (argvars[0].vval.v_list != NULL) {
+ while (n-- > 0) {
+ if (list_extend(rettv->vval.v_list, argvars[0].vval.v_list, NULL)
+ == FAIL) {
+ break;
+ }
+ }
+ }
+ } else {
+ p = get_tv_string(&argvars[0]);
+ rettv->v_type = VAR_STRING;
+ rettv->vval.v_string = NULL;
+
+ slen = (int)STRLEN(p);
+ len = slen * n;
+ if (len <= 0)
+ return;
+
+ r = alloc(len + 1);
+ if (r != NULL) {
+ for (i = 0; i < n; i++)
+ memmove(r + i * slen, p, (size_t)slen);
+ r[len] = NUL;
+ }
+
+ rettv->vval.v_string = r;
+ }
+}
+
+/*
+ * "resolve()" function
+ */
+static void f_resolve(typval_T *argvars, typval_T *rettv)
+{
+ char_u *p;
+#ifdef HAVE_READLINK
+ char_u *buf = NULL;
+#endif
+
+ p = get_tv_string(&argvars[0]);
+#ifdef FEAT_SHORTCUT
+ {
+ char_u *v = NULL;
+
+ v = mch_resolve_shortcut(p);
+ if (v != NULL)
+ rettv->vval.v_string = v;
+ else
+ rettv->vval.v_string = vim_strsave(p);
+ }
+#else
+# ifdef HAVE_READLINK
+ {
+ char_u *cpy;
+ int len;
+ char_u *remain = NULL;
+ char_u *q;
+ int is_relative_to_current = FALSE;
+ int has_trailing_pathsep = FALSE;
+ int limit = 100;
+
+ p = vim_strsave(p);
+
+ if (p[0] == '.' && (vim_ispathsep(p[1])
+ || (p[1] == '.' && (vim_ispathsep(p[2])))))
+ is_relative_to_current = TRUE;
+
+ len = STRLEN(p);
+ if (len > 0 && after_pathsep(p, p + len)) {
+ has_trailing_pathsep = TRUE;
+ p[len - 1] = NUL; /* the trailing slash breaks readlink() */
+ }
+
+ q = path_next_component(p);
+ if (*q != NUL) {
+ /* Separate the first path component in "p", and keep the
+ * remainder (beginning with the path separator). */
+ remain = vim_strsave(q - 1);
+ q[-1] = NUL;
+ }
+
+ buf = alloc(MAXPATHL + 1);
+ if (buf == NULL)
+ goto fail;
+
+ for (;; ) {
+ for (;; ) {
+ len = readlink((char *)p, (char *)buf, MAXPATHL);
+ if (len <= 0)
+ break;
+ buf[len] = NUL;
+
+ if (limit-- == 0) {
+ free(p);
+ free(remain);
+ EMSG(_("E655: Too many symbolic links (cycle?)"));
+ rettv->vval.v_string = NULL;
+ goto fail;
+ }
+
+ /* Ensure that the result will have a trailing path separator
+ * if the argument has one. */
+ if (remain == NULL && has_trailing_pathsep)
+ add_pathsep(buf);
+
+ /* Separate the first path component in the link value and
+ * concatenate the remainders. */
+ q = path_next_component(vim_ispathsep(*buf) ? buf + 1 : buf);
+ if (*q != NUL) {
+ if (remain == NULL)
+ remain = vim_strsave(q - 1);
+ else {
+ cpy = concat_str(q - 1, remain);
+ if (cpy != NULL) {
+ free(remain);
+ remain = cpy;
+ }
+ }
+ q[-1] = NUL;
+ }
+
+ q = path_tail(p);
+ if (q > p && *q == NUL) {
+ /* Ignore trailing path separator. */
+ q[-1] = NUL;
+ q = path_tail(p);
+ }
+ if (q > p && !path_is_absolute_path(buf)) {
+ /* symlink is relative to directory of argument */
+ cpy = alloc((unsigned)(STRLEN(p) + STRLEN(buf) + 1));
+ if (cpy != NULL) {
+ STRCPY(cpy, p);
+ STRCPY(path_tail(cpy), buf);
+ free(p);
+ p = cpy;
+ }
+ } else {
+ free(p);
+ p = vim_strsave(buf);
+ }
+ }
+
+ if (remain == NULL)
+ break;
+
+ /* Append the first path component of "remain" to "p". */
+ q = path_next_component(remain + 1);
+ len = q - remain - (*q != NUL);
+ cpy = vim_strnsave(p, STRLEN(p) + len);
+ if (cpy != NULL) {
+ STRNCAT(cpy, remain, len);
+ free(p);
+ p = cpy;
+ }
+ /* Shorten "remain". */
+ if (*q != NUL)
+ STRMOVE(remain, q - 1);
+ else {
+ free(remain);
+ remain = NULL;
+ }
+ }
+
+ /* If the result is a relative path name, make it explicitly relative to
+ * the current directory if and only if the argument had this form. */
+ if (!vim_ispathsep(*p)) {
+ if (is_relative_to_current
+ && *p != NUL
+ && !(p[0] == '.'
+ && (p[1] == NUL
+ || vim_ispathsep(p[1])
+ || (p[1] == '.'
+ && (p[2] == NUL
+ || vim_ispathsep(p[2])))))) {
+ /* Prepend "./". */
+ cpy = concat_str((char_u *)"./", p);
+ if (cpy != NULL) {
+ free(p);
+ p = cpy;
+ }
+ } else if (!is_relative_to_current) {
+ /* Strip leading "./". */
+ q = p;
+ while (q[0] == '.' && vim_ispathsep(q[1]))
+ q += 2;
+ if (q > p)
+ STRMOVE(p, p + 2);
+ }
+ }
+
+ /* Ensure that the result will have no trailing path separator
+ * if the argument had none. But keep "/" or "//". */
+ if (!has_trailing_pathsep) {
+ q = p + STRLEN(p);
+ if (after_pathsep(p, q))
+ *path_tail_with_sep(p) = NUL;
+ }
+
+ rettv->vval.v_string = p;
+ }
+# else
+ rettv->vval.v_string = vim_strsave(p);
+# endif
+#endif
+
+ simplify_filename(rettv->vval.v_string);
+
+#ifdef HAVE_READLINK
+fail:
+ free(buf);
+#endif
+ rettv->v_type = VAR_STRING;
+}
+
+/*
+ * "reverse({list})" function
+ */
+static void f_reverse(typval_T *argvars, typval_T *rettv)
+{
+ list_T *l;
+ listitem_T *li, *ni;
+
+ if (argvars[0].v_type != VAR_LIST)
+ EMSG2(_(e_listarg), "reverse()");
+ else if ((l = argvars[0].vval.v_list) != NULL
+ && !tv_check_lock(l->lv_lock, (char_u *)_("reverse() argument"))) {
+ li = l->lv_last;
+ l->lv_first = l->lv_last = NULL;
+ l->lv_len = 0;
+ while (li != NULL) {
+ ni = li->li_prev;
+ list_append(l, li);
+ li = ni;
+ }
+ rettv->vval.v_list = l;
+ rettv->v_type = VAR_LIST;
+ ++l->lv_refcount;
+ l->lv_idx = l->lv_len - l->lv_idx - 1;
+ }
+}
+
+#define SP_NOMOVE 0x01 /* don't move cursor */
+#define SP_REPEAT 0x02 /* repeat to find outer pair */
+#define SP_RETCOUNT 0x04 /* return matchcount */
+#define SP_SETPCMARK 0x08 /* set previous context mark */
+#define SP_START 0x10 /* accept match at start position */
+#define SP_SUBPAT 0x20 /* return nr of matching sub-pattern */
+#define SP_END 0x40 /* leave cursor at end of match */
+
+static int get_search_arg(typval_T *varp, int *flagsp);
+
+/*
+ * Get flags for a search function.
+ * Possibly sets "p_ws".
+ * Returns BACKWARD, FORWARD or zero (for an error).
+ */
+static int get_search_arg(typval_T *varp, int *flagsp)
+{
+ int dir = FORWARD;
+ char_u *flags;
+ char_u nbuf[NUMBUFLEN];
+ int mask;
+
+ if (varp->v_type != VAR_UNKNOWN) {
+ flags = get_tv_string_buf_chk(varp, nbuf);
+ if (flags == NULL)
+ return 0; /* type error; errmsg already given */
+ while (*flags != NUL) {
+ switch (*flags) {
+ case 'b': dir = BACKWARD; break;
+ case 'w': p_ws = TRUE; break;
+ case 'W': p_ws = FALSE; break;
+ default: mask = 0;
+ if (flagsp != NULL)
+ switch (*flags) {
+ case 'c': mask = SP_START; break;
+ case 'e': mask = SP_END; break;
+ case 'm': mask = SP_RETCOUNT; break;
+ case 'n': mask = SP_NOMOVE; break;
+ case 'p': mask = SP_SUBPAT; break;
+ case 'r': mask = SP_REPEAT; break;
+ case 's': mask = SP_SETPCMARK; break;
+ }
+ if (mask == 0) {
+ EMSG2(_(e_invarg2), flags);
+ dir = 0;
+ } else
+ *flagsp |= mask;
+ }
+ if (dir == 0)
+ break;
+ ++flags;
+ }
+ }
+ return dir;
+}
+
+/*
+ * Shared by search() and searchpos() functions
+ */
+static int search_cmn(typval_T *argvars, pos_T *match_pos, int *flagsp)
+{
+ int flags;
+ char_u *pat;
+ pos_T pos;
+ pos_T save_cursor;
+ int save_p_ws = p_ws;
+ int dir;
+ int retval = 0; /* default: FAIL */
+ long lnum_stop = 0;
+ proftime_T tm;
+ long time_limit = 0;
+ int options = SEARCH_KEEP;
+ int subpatnum;
+
+ pat = get_tv_string(&argvars[0]);
+ dir = get_search_arg(&argvars[1], flagsp); /* may set p_ws */
+ if (dir == 0)
+ goto theend;
+ flags = *flagsp;
+ if (flags & SP_START)
+ options |= SEARCH_START;
+ if (flags & SP_END)
+ options |= SEARCH_END;
+
+ /* Optional arguments: line number to stop searching and timeout. */
+ if (argvars[1].v_type != VAR_UNKNOWN && argvars[2].v_type != VAR_UNKNOWN) {
+ lnum_stop = get_tv_number_chk(&argvars[2], NULL);
+ if (lnum_stop < 0)
+ goto theend;
+ if (argvars[3].v_type != VAR_UNKNOWN) {
+ time_limit = get_tv_number_chk(&argvars[3], NULL);
+ if (time_limit < 0)
+ goto theend;
+ }
+ }
+
+ /* Set the time limit, if there is one. */
+ profile_setlimit(time_limit, &tm);
+
+ /*
+ * This function does not accept SP_REPEAT and SP_RETCOUNT flags.
+ * Check to make sure only those flags are set.
+ * Also, Only the SP_NOMOVE or the SP_SETPCMARK flag can be set. Both
+ * flags cannot be set. Check for that condition also.
+ */
+ if (((flags & (SP_REPEAT | SP_RETCOUNT)) != 0)
+ || ((flags & SP_NOMOVE) && (flags & SP_SETPCMARK))) {
+ EMSG2(_(e_invarg2), get_tv_string(&argvars[1]));
+ goto theend;
+ }
+
+ pos = save_cursor = curwin->w_cursor;
+ subpatnum = searchit(curwin, curbuf, &pos, dir, pat, 1L,
+ options, RE_SEARCH, (linenr_T)lnum_stop, &tm);
+ if (subpatnum != FAIL) {
+ if (flags & SP_SUBPAT)
+ retval = subpatnum;
+ else
+ retval = pos.lnum;
+ if (flags & SP_SETPCMARK)
+ setpcmark();
+ curwin->w_cursor = pos;
+ if (match_pos != NULL) {
+ /* Store the match cursor position */
+ match_pos->lnum = pos.lnum;
+ match_pos->col = pos.col + 1;
+ }
+ /* "/$" will put the cursor after the end of the line, may need to
+ * correct that here */
+ check_cursor();
+ }
+
+ /* If 'n' flag is used: restore cursor position. */
+ if (flags & SP_NOMOVE)
+ curwin->w_cursor = save_cursor;
+ else
+ curwin->w_set_curswant = TRUE;
+theend:
+ p_ws = save_p_ws;
+
+ return retval;
+}
+
+
+/*
+ * round() is not in C90, use ceil() or floor() instead.
+ */
+float_T vim_round(float_T f)
+{
+ return f > 0 ? floor(f + 0.5) : ceil(f - 0.5);
+}
+
+/*
+ * "round({float})" function
+ */
+static void f_round(typval_T *argvars, typval_T *rettv)
+{
+ float_T f;
+
+ rettv->v_type = VAR_FLOAT;
+ if (get_float_arg(argvars, &f) == OK)
+ rettv->vval.v_float = vim_round(f);
+ else
+ rettv->vval.v_float = 0.0;
+}
+
+/*
+ * "screenattr()" function
+ */
+static void f_screenattr(typval_T *argvars, typval_T *rettv)
+{
+ int row;
+ int col;
+ int c;
+
+ row = get_tv_number_chk(&argvars[0], NULL) - 1;
+ col = get_tv_number_chk(&argvars[1], NULL) - 1;
+ if (row < 0 || row >= screen_Rows
+ || col < 0 || col >= screen_Columns)
+ c = -1;
+ else
+ c = ScreenAttrs[LineOffset[row] + col];
+ rettv->vval.v_number = c;
+}
+
+/*
+ * "screenchar()" function
+ */
+static void f_screenchar(typval_T *argvars, typval_T *rettv)
+{
+ int row;
+ int col;
+ int off;
+ int c;
+
+ row = get_tv_number_chk(&argvars[0], NULL) - 1;
+ col = get_tv_number_chk(&argvars[1], NULL) - 1;
+ if (row < 0 || row >= screen_Rows
+ || col < 0 || col >= screen_Columns)
+ c = -1;
+ else {
+ off = LineOffset[row] + col;
+ if (enc_utf8 && ScreenLinesUC[off] != 0)
+ c = ScreenLinesUC[off];
+ else
+ c = ScreenLines[off];
+ }
+ rettv->vval.v_number = c;
+}
+
+/*
+ * "screencol()" function
+ *
+ * First column is 1 to be consistent with virtcol().
+ */
+static void f_screencol(typval_T *argvars, typval_T *rettv)
+{
+ rettv->vval.v_number = screen_screencol() + 1;
+}
+
+/*
+ * "screenrow()" function
+ */
+static void f_screenrow(typval_T *argvars, typval_T *rettv)
+{
+ rettv->vval.v_number = screen_screenrow() + 1;
+}
+
+/*
+ * "search()" function
+ */
+static void f_search(typval_T *argvars, typval_T *rettv)
+{
+ int flags = 0;
+
+ rettv->vval.v_number = search_cmn(argvars, NULL, &flags);
+}
+
+/*
+ * "searchdecl()" function
+ */
+static void f_searchdecl(typval_T *argvars, typval_T *rettv)
+{
+ int locally = 1;
+ int thisblock = 0;
+ int error = FALSE;
+ char_u *name;
+
+ rettv->vval.v_number = 1; /* default: FAIL */
+
+ name = get_tv_string_chk(&argvars[0]);
+ if (argvars[1].v_type != VAR_UNKNOWN) {
+ locally = get_tv_number_chk(&argvars[1], &error) == 0;
+ if (!error && argvars[2].v_type != VAR_UNKNOWN)
+ thisblock = get_tv_number_chk(&argvars[2], &error) != 0;
+ }
+ if (!error && name != NULL)
+ rettv->vval.v_number = find_decl(name, (int)STRLEN(name),
+ locally, thisblock, SEARCH_KEEP) == FAIL;
+}
+
+/*
+ * Used by searchpair() and searchpairpos()
+ */
+static int searchpair_cmn(typval_T *argvars, pos_T *match_pos)
+{
+ char_u *spat, *mpat, *epat;
+ char_u *skip;
+ int save_p_ws = p_ws;
+ int dir;
+ int flags = 0;
+ char_u nbuf1[NUMBUFLEN];
+ char_u nbuf2[NUMBUFLEN];
+ char_u nbuf3[NUMBUFLEN];
+ int retval = 0; /* default: FAIL */
+ long lnum_stop = 0;
+ long time_limit = 0;
+
+ /* Get the three pattern arguments: start, middle, end. */
+ spat = get_tv_string_chk(&argvars[0]);
+ mpat = get_tv_string_buf_chk(&argvars[1], nbuf1);
+ epat = get_tv_string_buf_chk(&argvars[2], nbuf2);
+ if (spat == NULL || mpat == NULL || epat == NULL)
+ goto theend; /* type error */
+
+ /* Handle the optional fourth argument: flags */
+ dir = get_search_arg(&argvars[3], &flags); /* may set p_ws */
+ if (dir == 0)
+ goto theend;
+
+ /* Don't accept SP_END or SP_SUBPAT.
+ * Only one of the SP_NOMOVE or SP_SETPCMARK flags can be set.
+ */
+ if ((flags & (SP_END | SP_SUBPAT)) != 0
+ || ((flags & SP_NOMOVE) && (flags & SP_SETPCMARK))) {
+ EMSG2(_(e_invarg2), get_tv_string(&argvars[3]));
+ goto theend;
+ }
+
+ /* Using 'r' implies 'W', otherwise it doesn't work. */
+ if (flags & SP_REPEAT)
+ p_ws = FALSE;
+
+ /* Optional fifth argument: skip expression */
+ if (argvars[3].v_type == VAR_UNKNOWN
+ || argvars[4].v_type == VAR_UNKNOWN)
+ skip = (char_u *)"";
+ else {
+ skip = get_tv_string_buf_chk(&argvars[4], nbuf3);
+ if (argvars[5].v_type != VAR_UNKNOWN) {
+ lnum_stop = get_tv_number_chk(&argvars[5], NULL);
+ if (lnum_stop < 0)
+ goto theend;
+ if (argvars[6].v_type != VAR_UNKNOWN) {
+ time_limit = get_tv_number_chk(&argvars[6], NULL);
+ if (time_limit < 0)
+ goto theend;
+ }
+ }
+ }
+ if (skip == NULL)
+ goto theend; /* type error */
+
+ retval = do_searchpair(spat, mpat, epat, dir, skip, flags,
+ match_pos, lnum_stop, time_limit);
+
+theend:
+ p_ws = save_p_ws;
+
+ return retval;
+}
+
+/*
+ * "searchpair()" function
+ */
+static void f_searchpair(typval_T *argvars, typval_T *rettv)
+{
+ rettv->vval.v_number = searchpair_cmn(argvars, NULL);
+}
+
+/*
+ * "searchpairpos()" function
+ */
+static void f_searchpairpos(typval_T *argvars, typval_T *rettv)
+{
+ pos_T match_pos;
+ int lnum = 0;
+ int col = 0;
+
+ rettv_list_alloc(rettv);
+
+ if (searchpair_cmn(argvars, &match_pos) > 0) {
+ lnum = match_pos.lnum;
+ col = match_pos.col;
+ }
+
+ list_append_number(rettv->vval.v_list, (varnumber_T)lnum);
+ list_append_number(rettv->vval.v_list, (varnumber_T)col);
+}
+
+/*
+ * Search for a start/middle/end thing.
+ * Used by searchpair(), see its documentation for the details.
+ * Returns 0 or -1 for no match,
+ */
+long
+do_searchpair (
+ char_u *spat, /* start pattern */
+ char_u *mpat, /* middle pattern */
+ char_u *epat, /* end pattern */
+ int dir, /* BACKWARD or FORWARD */
+ char_u *skip, /* skip expression */
+ int flags, /* SP_SETPCMARK and other SP_ values */
+ pos_T *match_pos,
+ linenr_T lnum_stop, /* stop at this line if not zero */
+ long time_limit /* stop after this many msec */
+)
+{
+ char_u *save_cpo;
+ char_u *pat, *pat2 = NULL, *pat3 = NULL;
+ long retval = 0;
+ pos_T pos;
+ pos_T firstpos;
+ pos_T foundpos;
+ pos_T save_cursor;
+ pos_T save_pos;
+ int n;
+ int r;
+ int nest = 1;
+ int err;
+ int options = SEARCH_KEEP;
+ proftime_T tm;
+
+ /* Make 'cpoptions' empty, the 'l' flag should not be used here. */
+ save_cpo = p_cpo;
+ p_cpo = empty_option;
+
+ /* Set the time limit, if there is one. */
+ profile_setlimit(time_limit, &tm);
+
+ /* Make two search patterns: start/end (pat2, for in nested pairs) and
+ * start/middle/end (pat3, for the top pair). */
+ pat2 = alloc((unsigned)(STRLEN(spat) + STRLEN(epat) + 15));
+ pat3 = alloc((unsigned)(STRLEN(spat) + STRLEN(mpat) + STRLEN(epat) + 23));
+ if (pat2 == NULL || pat3 == NULL)
+ goto theend;
+ sprintf((char *)pat2, "\\(%s\\m\\)\\|\\(%s\\m\\)", spat, epat);
+ if (*mpat == NUL)
+ STRCPY(pat3, pat2);
+ else
+ sprintf((char *)pat3, "\\(%s\\m\\)\\|\\(%s\\m\\)\\|\\(%s\\m\\)",
+ spat, epat, mpat);
+ if (flags & SP_START)
+ options |= SEARCH_START;
+
+ save_cursor = curwin->w_cursor;
+ pos = curwin->w_cursor;
+ clearpos(&firstpos);
+ clearpos(&foundpos);
+ pat = pat3;
+ for (;; ) {
+ n = searchit(curwin, curbuf, &pos, dir, pat, 1L,
+ options, RE_SEARCH, lnum_stop, &tm);
+ if (n == FAIL || (firstpos.lnum != 0 && equalpos(pos, firstpos)))
+ /* didn't find it or found the first match again: FAIL */
+ break;
+
+ if (firstpos.lnum == 0)
+ firstpos = pos;
+ if (equalpos(pos, foundpos)) {
+ /* Found the same position again. Can happen with a pattern that
+ * has "\zs" at the end and searching backwards. Advance one
+ * character and try again. */
+ if (dir == BACKWARD)
+ decl(&pos);
+ else
+ incl(&pos);
+ }
+ foundpos = pos;
+
+ /* clear the start flag to avoid getting stuck here */
+ options &= ~SEARCH_START;
+
+ /* If the skip pattern matches, ignore this match. */
+ if (*skip != NUL) {
+ save_pos = curwin->w_cursor;
+ curwin->w_cursor = pos;
+ r = eval_to_bool(skip, &err, NULL, FALSE);
+ curwin->w_cursor = save_pos;
+ if (err) {
+ /* Evaluating {skip} caused an error, break here. */
+ curwin->w_cursor = save_cursor;
+ retval = -1;
+ break;
+ }
+ if (r)
+ continue;
+ }
+
+ if ((dir == BACKWARD && n == 3) || (dir == FORWARD && n == 2)) {
+ /* Found end when searching backwards or start when searching
+ * forward: nested pair. */
+ ++nest;
+ pat = pat2; /* nested, don't search for middle */
+ } else {
+ /* Found end when searching forward or start when searching
+ * backward: end of (nested) pair; or found middle in outer pair. */
+ if (--nest == 1)
+ pat = pat3; /* outer level, search for middle */
+ }
+
+ if (nest == 0) {
+ /* Found the match: return matchcount or line number. */
+ if (flags & SP_RETCOUNT)
+ ++retval;
+ else
+ retval = pos.lnum;
+ if (flags & SP_SETPCMARK)
+ setpcmark();
+ curwin->w_cursor = pos;
+ if (!(flags & SP_REPEAT))
+ break;
+ nest = 1; /* search for next unmatched */
+ }
+ }
+
+ if (match_pos != NULL) {
+ /* Store the match cursor position */
+ match_pos->lnum = curwin->w_cursor.lnum;
+ match_pos->col = curwin->w_cursor.col + 1;
+ }
+
+ /* If 'n' flag is used or search failed: restore cursor position. */
+ if ((flags & SP_NOMOVE) || retval == 0)
+ curwin->w_cursor = save_cursor;
+
+theend:
+ free(pat2);
+ free(pat3);
+ if (p_cpo == empty_option)
+ p_cpo = save_cpo;
+ else
+ /* Darn, evaluating the {skip} expression changed the value. */
+ free_string_option(save_cpo);
+
+ return retval;
+}
+
+/*
+ * "searchpos()" function
+ */
+static void f_searchpos(typval_T *argvars, typval_T *rettv)
+{
+ pos_T match_pos;
+ int lnum = 0;
+ int col = 0;
+ int n;
+ int flags = 0;
+
+ rettv_list_alloc(rettv);
+
+ n = search_cmn(argvars, &match_pos, &flags);
+ if (n > 0) {
+ lnum = match_pos.lnum;
+ col = match_pos.col;
+ }
+
+ list_append_number(rettv->vval.v_list, (varnumber_T)lnum);
+ list_append_number(rettv->vval.v_list, (varnumber_T)col);
+ if (flags & SP_SUBPAT)
+ list_append_number(rettv->vval.v_list, (varnumber_T)n);
+}
+
+
+static void f_server2client(typval_T *argvars, typval_T *rettv)
+{
+ rettv->vval.v_number = -1;
+}
+
+static void f_serverlist(typval_T *argvars, typval_T *rettv)
+{
+ char_u *r = NULL;
+
+ rettv->v_type = VAR_STRING;
+ rettv->vval.v_string = r;
+}
+
+/*
+ * "setbufvar()" function
+ */
+static void f_setbufvar(typval_T *argvars, typval_T *rettv)
+{
+ buf_T *buf;
+ aco_save_T aco;
+ char_u *varname, *bufvarname;
+ typval_T *varp;
+ char_u nbuf[NUMBUFLEN];
+
+ if (check_restricted() || check_secure())
+ return;
+ (void)get_tv_number(&argvars[0]); /* issue errmsg if type error */
+ varname = get_tv_string_chk(&argvars[1]);
+ buf = get_buf_tv(&argvars[0], FALSE);
+ varp = &argvars[2];
+
+ if (buf != NULL && varname != NULL && varp != NULL) {
+ /* set curbuf to be our buf, temporarily */
+ aucmd_prepbuf(&aco, buf);
+
+ if (*varname == '&') {
+ long numval;
+ char_u *strval;
+ int error = FALSE;
+
+ ++varname;
+ numval = get_tv_number_chk(varp, &error);
+ strval = get_tv_string_buf_chk(varp, nbuf);
+ if (!error && strval != NULL)
+ set_option_value(varname, numval, strval, OPT_LOCAL);
+ } else {
+ bufvarname = alloc((unsigned)STRLEN(varname) + 3);
+ if (bufvarname != NULL) {
+ STRCPY(bufvarname, "b:");
+ STRCPY(bufvarname + 2, varname);
+ set_var(bufvarname, varp, TRUE);
+ free(bufvarname);
+ }
+ }
+
+ /* reset notion of buffer */
+ aucmd_restbuf(&aco);
+ }
+}
+
+/*
+ * "setcmdpos()" function
+ */
+static void f_setcmdpos(typval_T *argvars, typval_T *rettv)
+{
+ int pos = (int)get_tv_number(&argvars[0]) - 1;
+
+ if (pos >= 0)
+ rettv->vval.v_number = set_cmdline_pos(pos);
+}
+
+/*
+ * "setline()" function
+ */
+static void f_setline(typval_T *argvars, typval_T *rettv)
+{
+ linenr_T lnum;
+ char_u *line = NULL;
+ list_T *l = NULL;
+ listitem_T *li = NULL;
+ long added = 0;
+ linenr_T lcount = curbuf->b_ml.ml_line_count;
+
+ lnum = get_tv_lnum(&argvars[0]);
+ if (argvars[1].v_type == VAR_LIST) {
+ l = argvars[1].vval.v_list;
+ li = l->lv_first;
+ } else
+ line = get_tv_string_chk(&argvars[1]);
+
+ /* default result is zero == OK */
+ for (;; ) {
+ if (l != NULL) {
+ /* list argument, get next string */
+ if (li == NULL)
+ break;
+ line = get_tv_string_chk(&li->li_tv);
+ li = li->li_next;
+ }
+
+ rettv->vval.v_number = 1; /* FAIL */
+ if (line == NULL || lnum < 1 || lnum > curbuf->b_ml.ml_line_count + 1)
+ break;
+
+ /* When coming here from Insert mode, sync undo, so that this can be
+ * undone separately from what was previously inserted. */
+ if (u_sync_once == 2) {
+ u_sync_once = 1; /* notify that u_sync() was called */
+ u_sync(TRUE);
+ }
+
+ if (lnum <= curbuf->b_ml.ml_line_count) {
+ /* existing line, replace it */
+ if (u_savesub(lnum) == OK && ml_replace(lnum, line, TRUE) == OK) {
+ changed_bytes(lnum, 0);
+ if (lnum == curwin->w_cursor.lnum)
+ check_cursor_col();
+ rettv->vval.v_number = 0; /* OK */
+ }
+ } else if (added > 0 || u_save(lnum - 1, lnum) == OK) {
+ /* lnum is one past the last line, append the line */
+ ++added;
+ if (ml_append(lnum - 1, line, (colnr_T)0, FALSE) == OK)
+ rettv->vval.v_number = 0; /* OK */
+ }
+
+ if (l == NULL) /* only one string argument */
+ break;
+ ++lnum;
+ }
+
+ if (added > 0)
+ appended_lines_mark(lcount, added);
+}
+
+static void set_qf_ll_list(win_T *wp, typval_T *list_arg,
+ typval_T *action_arg,
+ typval_T *rettv);
+
+/*
+ * Used by "setqflist()" and "setloclist()" functions
+ */
+static void set_qf_ll_list(win_T *wp, typval_T *list_arg, typval_T *action_arg, typval_T *rettv)
+{
+ char_u *act;
+ int action = ' ';
+
+ rettv->vval.v_number = -1;
+
+ if (list_arg->v_type != VAR_LIST)
+ EMSG(_(e_listreq));
+ else {
+ list_T *l = list_arg->vval.v_list;
+
+ if (action_arg->v_type == VAR_STRING) {
+ act = get_tv_string_chk(action_arg);
+ if (act == NULL)
+ return; /* type error; errmsg already given */
+ if (*act == 'a' || *act == 'r')
+ action = *act;
+ }
+
+ if (l != NULL && set_errorlist(wp, l, action,
+ (char_u *)(wp == NULL ? "setqflist()" : "setloclist()")) == OK)
+ rettv->vval.v_number = 0;
+ }
+}
+
+/*
+ * "setloclist()" function
+ */
+static void f_setloclist(typval_T *argvars, typval_T *rettv)
+{
+ win_T *win;
+
+ rettv->vval.v_number = -1;
+
+ win = find_win_by_nr(&argvars[0], NULL);
+ if (win != NULL)
+ set_qf_ll_list(win, &argvars[1], &argvars[2], rettv);
+}
+
+/*
+ * "setmatches()" function
+ */
+static void f_setmatches(typval_T *argvars, typval_T *rettv)
+{
+ list_T *l;
+ listitem_T *li;
+ dict_T *d;
+
+ rettv->vval.v_number = -1;
+ if (argvars[0].v_type != VAR_LIST) {
+ EMSG(_(e_listreq));
+ return;
+ }
+ if ((l = argvars[0].vval.v_list) != NULL) {
+
+ /* To some extent make sure that we are dealing with a list from
+ * "getmatches()". */
+ li = l->lv_first;
+ while (li != NULL) {
+ if (li->li_tv.v_type != VAR_DICT
+ || (d = li->li_tv.vval.v_dict) == NULL) {
+ EMSG(_(e_invarg));
+ return;
+ }
+ if (!(dict_find(d, (char_u *)"group", -1) != NULL
+ && dict_find(d, (char_u *)"pattern", -1) != NULL
+ && dict_find(d, (char_u *)"priority", -1) != NULL
+ && dict_find(d, (char_u *)"id", -1) != NULL)) {
+ EMSG(_(e_invarg));
+ return;
+ }
+ li = li->li_next;
+ }
+
+ clear_matches(curwin);
+ li = l->lv_first;
+ while (li != NULL) {
+ d = li->li_tv.vval.v_dict;
+ match_add(curwin, get_dict_string(d, (char_u *)"group", FALSE),
+ get_dict_string(d, (char_u *)"pattern", FALSE),
+ (int)get_dict_number(d, (char_u *)"priority"),
+ (int)get_dict_number(d, (char_u *)"id"));
+ li = li->li_next;
+ }
+ rettv->vval.v_number = 0;
+ }
+}
+
+/*
+ * "setpos()" function
+ */
+static void f_setpos(typval_T *argvars, typval_T *rettv)
+{
+ pos_T pos;
+ int fnum;
+ char_u *name;
+
+ rettv->vval.v_number = -1;
+ name = get_tv_string_chk(argvars);
+ if (name != NULL) {
+ if (list2fpos(&argvars[1], &pos, &fnum) == OK) {
+ if (--pos.col < 0)
+ pos.col = 0;
+ if (name[0] == '.' && name[1] == NUL) {
+ /* set cursor */
+ if (fnum == curbuf->b_fnum) {
+ curwin->w_cursor = pos;
+ check_cursor();
+ rettv->vval.v_number = 0;
+ } else
+ EMSG(_(e_invarg));
+ } else if (name[0] == '\'' && name[1] != NUL && name[2] == NUL) {
+ /* set mark */
+ if (setmark_pos(name[1], &pos, fnum) == OK)
+ rettv->vval.v_number = 0;
+ } else
+ EMSG(_(e_invarg));
+ }
+ }
+}
+
+/*
+ * "setqflist()" function
+ */
+static void f_setqflist(typval_T *argvars, typval_T *rettv)
+{
+ set_qf_ll_list(NULL, &argvars[0], &argvars[1], rettv);
+}
+
+/*
+ * "setreg()" function
+ */
+static void f_setreg(typval_T *argvars, typval_T *rettv)
+{
+ int regname;
+ char_u *strregname;
+ char_u *stropt;
+ char_u *strval;
+ int append;
+ char_u yank_type;
+ long block_len;
+
+ block_len = -1;
+ yank_type = MAUTO;
+ append = FALSE;
+
+ strregname = get_tv_string_chk(argvars);
+ rettv->vval.v_number = 1; /* FAIL is default */
+
+ if (strregname == NULL)
+ return; /* type error; errmsg already given */
+ regname = *strregname;
+ if (regname == 0 || regname == '@')
+ regname = '"';
+ else if (regname == '=')
+ return;
+
+ if (argvars[2].v_type != VAR_UNKNOWN) {
+ stropt = get_tv_string_chk(&argvars[2]);
+ if (stropt == NULL)
+ return; /* type error */
+ for (; *stropt != NUL; ++stropt)
+ switch (*stropt) {
+ case 'a': case 'A': /* append */
+ append = TRUE;
+ break;
+ case 'v': case 'c': /* character-wise selection */
+ yank_type = MCHAR;
+ break;
+ case 'V': case 'l': /* line-wise selection */
+ yank_type = MLINE;
+ break;
+ case 'b': case Ctrl_V: /* block-wise selection */
+ yank_type = MBLOCK;
+ if (VIM_ISDIGIT(stropt[1])) {
+ ++stropt;
+ block_len = getdigits(&stropt) - 1;
+ --stropt;
+ }
+ break;
+ }
+ }
+
+ strval = get_tv_string_chk(&argvars[1]);
+ if (strval != NULL)
+ write_reg_contents_ex(regname, strval, -1,
+ append, yank_type, block_len);
+ rettv->vval.v_number = 0;
+}
+
+/*
+ * "settabvar()" function
+ */
+static void f_settabvar(typval_T *argvars, typval_T *rettv)
+{
+ tabpage_T *save_curtab;
+ tabpage_T *tp;
+ char_u *varname, *tabvarname;
+ typval_T *varp;
+
+ rettv->vval.v_number = 0;
+
+ if (check_restricted() || check_secure())
+ return;
+
+ tp = find_tabpage((int)get_tv_number_chk(&argvars[0], NULL));
+ varname = get_tv_string_chk(&argvars[1]);
+ varp = &argvars[2];
+
+ if (varname != NULL && varp != NULL
+ && tp != NULL
+ ) {
+ save_curtab = curtab;
+ goto_tabpage_tp(tp, FALSE, FALSE);
+
+ tabvarname = alloc((unsigned)STRLEN(varname) + 3);
+ if (tabvarname != NULL) {
+ STRCPY(tabvarname, "t:");
+ STRCPY(tabvarname + 2, varname);
+ set_var(tabvarname, varp, TRUE);
+ free(tabvarname);
+ }
+
+ /* Restore current tabpage */
+ if (valid_tabpage(save_curtab))
+ goto_tabpage_tp(save_curtab, FALSE, FALSE);
+ }
+}
+
+/*
+ * "settabwinvar()" function
+ */
+static void f_settabwinvar(typval_T *argvars, typval_T *rettv)
+{
+ setwinvar(argvars, rettv, 1);
+}
+
+/*
+ * "setwinvar()" function
+ */
+static void f_setwinvar(typval_T *argvars, typval_T *rettv)
+{
+ setwinvar(argvars, rettv, 0);
+}
+
+/*
+ * "setwinvar()" and "settabwinvar()" functions
+ */
+
+static void setwinvar(typval_T *argvars, typval_T *rettv, int off)
+{
+ win_T *win;
+ win_T *save_curwin;
+ tabpage_T *save_curtab;
+ char_u *varname, *winvarname;
+ typval_T *varp;
+ char_u nbuf[NUMBUFLEN];
+ tabpage_T *tp = NULL;
+
+ if (check_restricted() || check_secure())
+ return;
+
+ if (off == 1)
+ tp = find_tabpage((int)get_tv_number_chk(&argvars[0], NULL));
+ else
+ tp = curtab;
+ win = find_win_by_nr(&argvars[off], tp);
+ varname = get_tv_string_chk(&argvars[off + 1]);
+ varp = &argvars[off + 2];
+
+ if (win != NULL && varname != NULL && varp != NULL) {
+ if (switch_win(&save_curwin, &save_curtab, win, tp, TRUE) == FAIL)
+ return;
+
+ if (*varname == '&') {
+ long numval;
+ char_u *strval;
+ int error = FALSE;
+
+ ++varname;
+ numval = get_tv_number_chk(varp, &error);
+ strval = get_tv_string_buf_chk(varp, nbuf);
+ if (!error && strval != NULL)
+ set_option_value(varname, numval, strval, OPT_LOCAL);
+ } else {
+ winvarname = alloc((unsigned)STRLEN(varname) + 3);
+ if (winvarname != NULL) {
+ STRCPY(winvarname, "w:");
+ STRCPY(winvarname + 2, varname);
+ set_var(winvarname, varp, TRUE);
+ free(winvarname);
+ }
+ }
+
+ restore_win(save_curwin, save_curtab, TRUE);
+ }
+}
+
+/*
+ * "sha256({string})" function
+ */
+static void f_sha256(typval_T *argvars, typval_T *rettv)
+{
+ char_u *p;
+
+ p = get_tv_string(&argvars[0]);
+ rettv->vval.v_string = vim_strsave(
+ sha256_bytes(p, (int)STRLEN(p), NULL, 0));
+ rettv->v_type = VAR_STRING;
+}
+
+/*
+ * "shellescape({string})" function
+ */
+static void f_shellescape(typval_T *argvars, typval_T *rettv)
+{
+ rettv->vval.v_string = vim_strsave_shellescape(
+ get_tv_string(&argvars[0]), non_zero_arg(&argvars[1]), true);
+ rettv->v_type = VAR_STRING;
+}
+
+/*
+ * shiftwidth() function
+ */
+static void f_shiftwidth(typval_T *argvars, typval_T *rettv)
+{
+ rettv->vval.v_number = get_sw_value(curbuf);
+}
+
+/*
+ * "simplify()" function
+ */
+static void f_simplify(typval_T *argvars, typval_T *rettv)
+{
+ char_u *p;
+
+ p = get_tv_string(&argvars[0]);
+ rettv->vval.v_string = vim_strsave(p);
+ simplify_filename(rettv->vval.v_string); /* simplify in place */
+ rettv->v_type = VAR_STRING;
+}
+
+/*
+ * "sin()" function
+ */
+static void f_sin(typval_T *argvars, typval_T *rettv)
+{
+ float_T f;
+
+ rettv->v_type = VAR_FLOAT;
+ if (get_float_arg(argvars, &f) == OK)
+ rettv->vval.v_float = sin(f);
+ else
+ rettv->vval.v_float = 0.0;
+}
+
+/*
+ * "sinh()" function
+ */
+static void f_sinh(typval_T *argvars, typval_T *rettv)
+{
+ float_T f;
+
+ rettv->v_type = VAR_FLOAT;
+ if (get_float_arg(argvars, &f) == OK)
+ rettv->vval.v_float = sinh(f);
+ else
+ rettv->vval.v_float = 0.0;
+}
+
+static int
+item_compare(const void *s1, const void *s2);
+static int
+item_compare2(const void *s1, const void *s2);
+
+static int item_compare_ic;
+static char_u *item_compare_func;
+static dict_T *item_compare_selfdict;
+static int item_compare_func_err;
+static void do_sort_uniq(typval_T *argvars, typval_T *rettv, bool sort);
+#define ITEM_COMPARE_FAIL 999
+
+/*
+ * Compare functions for f_sort() and f_uniq() below.
+ */
+static int item_compare(const void *s1, const void *s2)
+{
+ char_u *p1, *p2;
+ char_u *tofree1, *tofree2;
+ int res;
+ char_u numbuf1[NUMBUFLEN];
+ char_u numbuf2[NUMBUFLEN];
+
+ p1 = tv2string(&(*(listitem_T **)s1)->li_tv, &tofree1, numbuf1, 0);
+ p2 = tv2string(&(*(listitem_T **)s2)->li_tv, &tofree2, numbuf2, 0);
+ if (p1 == NULL)
+ p1 = (char_u *)"";
+ if (p2 == NULL)
+ p2 = (char_u *)"";
+ if (item_compare_ic)
+ res = STRICMP(p1, p2);
+ else
+ res = STRCMP(p1, p2);
+ free(tofree1);
+ free(tofree2);
+ return res;
+}
+
+static int item_compare2(const void *s1, const void *s2)
+{
+ int res;
+ typval_T rettv;
+ typval_T argv[3];
+ int dummy;
+
+ /* shortcut after failure in previous call; compare all items equal */
+ if (item_compare_func_err)
+ return 0;
+
+ /* copy the values. This is needed to be able to set v_lock to VAR_FIXED
+ * in the copy without changing the original list items. */
+ copy_tv(&(*(listitem_T **)s1)->li_tv, &argv[0]);
+ copy_tv(&(*(listitem_T **)s2)->li_tv, &argv[1]);
+
+ rettv.v_type = VAR_UNKNOWN; /* clear_tv() uses this */
+ res = call_func(item_compare_func, (int)STRLEN(item_compare_func),
+ &rettv, 2, argv, 0L, 0L, &dummy, TRUE,
+ item_compare_selfdict);
+ clear_tv(&argv[0]);
+ clear_tv(&argv[1]);
+
+ if (res == FAIL)
+ res = ITEM_COMPARE_FAIL;
+ else
+ res = get_tv_number_chk(&rettv, &item_compare_func_err);
+ if (item_compare_func_err)
+ res = ITEM_COMPARE_FAIL; /* return value has wrong type */
+ clear_tv(&rettv);
+ return res;
+}
+
+/*
+ * "sort({list})" function
+ */
+static void do_sort_uniq(typval_T *argvars, typval_T *rettv, bool sort)
+{
+ list_T *l;
+ listitem_T *li;
+ listitem_T **ptrs;
+ long len;
+ long i;
+
+ if (argvars[0].v_type != VAR_LIST) {
+ EMSG2(_(e_listarg), sort ? "sort()" : "uniq()");
+ } else {
+ l = argvars[0].vval.v_list;
+ if (l == NULL || tv_check_lock(l->lv_lock,
+ (char_u *)(sort ? _("sort() argument") : _("uniq() argument")))) {
+ return;
+ }
+ rettv->vval.v_list = l;
+ rettv->v_type = VAR_LIST;
+ ++l->lv_refcount;
+
+ len = list_len(l);
+ if (len <= 1)
+ return; /* short list sorts pretty quickly */
+
+ item_compare_ic = FALSE;
+ item_compare_func = NULL;
+ item_compare_selfdict = NULL;
+
+ if (argvars[1].v_type != VAR_UNKNOWN) {
+ /* optional second argument: {func} */
+ if (argvars[1].v_type == VAR_FUNC) {
+ item_compare_func = argvars[1].vval.v_string;
+ } else {
+ int error = FALSE;
+
+ i = get_tv_number_chk(&argvars[1], &error);
+ if (error)
+ return; /* type error; errmsg already given */
+ if (i == 1)
+ item_compare_ic = TRUE;
+ else
+ item_compare_func = get_tv_string(&argvars[1]);
+ }
+
+ if (argvars[2].v_type != VAR_UNKNOWN) {
+ /* optional third argument: {dict} */
+ if (argvars[2].v_type != VAR_DICT) {
+ EMSG(_(e_dictreq));
+ return;
+ }
+ item_compare_selfdict = argvars[2].vval.v_dict;
+ }
+ }
+
+ /* Make an array with each entry pointing to an item in the List. */
+ ptrs = xmalloc((size_t)(len * sizeof (listitem_T *)));
+
+ i = 0;
+ if (sort) {
+ // sort(): ptrs will be the list to sort.
+ for (li = l->lv_first; li != NULL; li = li->li_next) {
+ ptrs[i++] = li;
+ }
+
+ item_compare_func_err = FALSE;
+ // Test the compare function.
+ if (item_compare_func != NULL
+ && item_compare2(&ptrs[0], &ptrs[1]) == ITEM_COMPARE_FAIL) {
+ EMSG(_("E702: Sort compare function failed"));
+ } else {
+ // Sort the array with item pointers.
+ qsort(ptrs, (size_t)len, sizeof (listitem_T *),
+ item_compare_func == NULL ? item_compare : item_compare2);
+
+ if (!item_compare_func_err) {
+ // Clear the list and append the items in the sorted order.
+ l->lv_first = NULL;
+ l->lv_last = NULL;
+ l->lv_idx_item = NULL;
+ l->lv_len = 0;
+
+ for (i = 0; i < len; i++) {
+ list_append(l, ptrs[i]);
+ }
+ }
+ }
+ } else {
+ int (*item_compare_func_ptr)(const void *, const void *);
+
+ // f_uniq(): ptrs will be a stack of items to remove.
+ item_compare_func_err = FALSE;
+ item_compare_func_ptr = item_compare_func ? item_compare2 : item_compare;
+
+ for (li = l->lv_first; li != NULL && li->li_next != NULL; li = li->li_next) {
+ if (item_compare_func_ptr(&li, &li->li_next) == 0) {
+ ptrs[i++] = li;
+ }
+ if (item_compare_func_err) {
+ EMSG(_("E882: Uniq compare function failed"));
+ break;
+ }
+ }
+
+ if (!item_compare_func_err) {
+ while (--i >= 0) {
+ li = ptrs[i]->li_next;
+ ptrs[i]->li_next = li->li_next;
+ if (li->li_next != NULL) {
+ li->li_next->li_prev = ptrs[i];
+ } else {
+ l->lv_last = ptrs[i];
+ }
+ list_fix_watch(l, li);
+ listitem_free(li);
+ l->lv_len--;
+ }
+ }
+ }
+
+ free(ptrs);
+ }
+}
+
+/// "sort"({list})" function
+static void f_sort(typval_T *argvars, typval_T *rettv)
+{
+ do_sort_uniq(argvars, rettv, true);
+}
+
+/// "uniq({list})" function
+static void f_uniq(typval_T *argvars, typval_T *rettv)
+{
+ do_sort_uniq(argvars, rettv, false);
+}
+
+/*
+ * "soundfold({word})" function
+ */
+static void f_soundfold(typval_T *argvars, typval_T *rettv)
+{
+ char_u *s;
+
+ rettv->v_type = VAR_STRING;
+ s = get_tv_string(&argvars[0]);
+ rettv->vval.v_string = eval_soundfold(s);
+}
+
+/*
+ * "spellbadword()" function
+ */
+static void f_spellbadword(typval_T *argvars, typval_T *rettv)
+{
+ char_u *word = (char_u *)"";
+ hlf_T attr = HLF_COUNT;
+ int len = 0;
+
+ rettv_list_alloc(rettv);
+
+ if (argvars[0].v_type == VAR_UNKNOWN) {
+ /* Find the start and length of the badly spelled word. */
+ len = spell_move_to(curwin, FORWARD, TRUE, TRUE, &attr);
+ if (len != 0)
+ word = ml_get_cursor();
+ } else if (curwin->w_p_spell && *curbuf->b_s.b_p_spl != NUL) {
+ char_u *str = get_tv_string_chk(&argvars[0]);
+ int capcol = -1;
+
+ if (str != NULL) {
+ /* Check the argument for spelling. */
+ while (*str != NUL) {
+ len = spell_check(curwin, str, &attr, &capcol, FALSE);
+ if (attr != HLF_COUNT) {
+ word = str;
+ break;
+ }
+ str += len;
+ }
+ }
+ }
+
+ list_append_string(rettv->vval.v_list, word, len);
+ list_append_string(rettv->vval.v_list, (char_u *)(
+ attr == HLF_SPB ? "bad" :
+ attr == HLF_SPR ? "rare" :
+ attr == HLF_SPL ? "local" :
+ attr == HLF_SPC ? "caps" :
+ ""), -1);
+}
+
+/*
+ * "spellsuggest()" function
+ */
+static void f_spellsuggest(typval_T *argvars, typval_T *rettv)
+{
+ char_u *str;
+ int typeerr = FALSE;
+ int maxcount;
+ garray_T ga;
+ int i;
+ listitem_T *li;
+ int need_capital = FALSE;
+
+ rettv_list_alloc(rettv);
+
+ if (curwin->w_p_spell && *curwin->w_s->b_p_spl != NUL) {
+ str = get_tv_string(&argvars[0]);
+ if (argvars[1].v_type != VAR_UNKNOWN) {
+ maxcount = get_tv_number_chk(&argvars[1], &typeerr);
+ if (maxcount <= 0)
+ return;
+ if (argvars[2].v_type != VAR_UNKNOWN) {
+ need_capital = get_tv_number_chk(&argvars[2], &typeerr);
+ if (typeerr)
+ return;
+ }
+ } else
+ maxcount = 25;
+
+ spell_suggest_list(&ga, str, maxcount, need_capital, FALSE);
+
+ for (i = 0; i < ga.ga_len; ++i) {
+ str = ((char_u **)ga.ga_data)[i];
+
+ li = listitem_alloc();
+ if (li == NULL)
+ free(str);
+ else {
+ li->li_tv.v_type = VAR_STRING;
+ li->li_tv.v_lock = 0;
+ li->li_tv.vval.v_string = str;
+ list_append(rettv->vval.v_list, li);
+ }
+ }
+ ga_clear(&ga);
+ }
+}
+
+static void f_split(typval_T *argvars, typval_T *rettv)
+{
+ char_u *str;
+ char_u *end;
+ char_u *pat = NULL;
+ regmatch_T regmatch;
+ char_u patbuf[NUMBUFLEN];
+ char_u *save_cpo;
+ int match;
+ colnr_T col = 0;
+ int keepempty = FALSE;
+ int typeerr = FALSE;
+
+ /* Make 'cpoptions' empty, the 'l' flag should not be used here. */
+ save_cpo = p_cpo;
+ p_cpo = (char_u *)"";
+
+ str = get_tv_string(&argvars[0]);
+ if (argvars[1].v_type != VAR_UNKNOWN) {
+ pat = get_tv_string_buf_chk(&argvars[1], patbuf);
+ if (pat == NULL)
+ typeerr = TRUE;
+ if (argvars[2].v_type != VAR_UNKNOWN)
+ keepempty = get_tv_number_chk(&argvars[2], &typeerr);
+ }
+ if (pat == NULL || *pat == NUL)
+ pat = (char_u *)"[\\x01- ]\\+";
+
+ rettv_list_alloc(rettv);
+
+ if (typeerr)
+ return;
+
+ regmatch.regprog = vim_regcomp(pat, RE_MAGIC + RE_STRING);
+ if (regmatch.regprog != NULL) {
+ regmatch.rm_ic = FALSE;
+ while (*str != NUL || keepempty) {
+ if (*str == NUL)
+ match = FALSE; /* empty item at the end */
+ else
+ match = vim_regexec_nl(&regmatch, str, col);
+ if (match)
+ end = regmatch.startp[0];
+ else
+ end = str + STRLEN(str);
+ if (keepempty || end > str || (rettv->vval.v_list->lv_len > 0
+ && *str != NUL && match && end <
+ regmatch.endp[0])) {
+ list_append_string(rettv->vval.v_list, str, (int)(end - str));
+ }
+ if (!match)
+ break;
+ /* Advance to just after the match. */
+ if (regmatch.endp[0] > str)
+ col = 0;
+ else {
+ /* Don't get stuck at the same match. */
+ col = (*mb_ptr2len)(regmatch.endp[0]);
+ }
+ str = regmatch.endp[0];
+ }
+
+ vim_regfree(regmatch.regprog);
+ }
+
+ p_cpo = save_cpo;
+}
+
+/*
+ * "sqrt()" function
+ */
+static void f_sqrt(typval_T *argvars, typval_T *rettv)
+{
+ float_T f;
+
+ rettv->v_type = VAR_FLOAT;
+ if (get_float_arg(argvars, &f) == OK)
+ rettv->vval.v_float = sqrt(f);
+ else
+ rettv->vval.v_float = 0.0;
+}
+
+/*
+ * "str2float()" function
+ */
+static void f_str2float(typval_T *argvars, typval_T *rettv)
+{
+ char_u *p = skipwhite(get_tv_string(&argvars[0]));
+
+ if (*p == '+')
+ p = skipwhite(p + 1);
+ (void)string2float(p, &rettv->vval.v_float);
+ rettv->v_type = VAR_FLOAT;
+}
+
+/*
+ * "str2nr()" function
+ */
+static void f_str2nr(typval_T *argvars, typval_T *rettv)
+{
+ int base = 10;
+ char_u *p;
+ long n;
+
+ if (argvars[1].v_type != VAR_UNKNOWN) {
+ base = get_tv_number(&argvars[1]);
+ if (base != 8 && base != 10 && base != 16) {
+ EMSG(_(e_invarg));
+ return;
+ }
+ }
+
+ p = skipwhite(get_tv_string(&argvars[0]));
+ if (*p == '+')
+ p = skipwhite(p + 1);
+ vim_str2nr(p, NULL, NULL, base == 8 ? 2 : 0, base == 16 ? 2 : 0, &n, NULL);
+ rettv->vval.v_number = n;
+}
+
+/*
+ * "strftime({format}[, {time}])" function
+ */
+static void f_strftime(typval_T *argvars, typval_T *rettv)
+{
+ char_u result_buf[256];
+ time_t seconds;
+ char_u *p;
+
+ rettv->v_type = VAR_STRING;
+
+ p = get_tv_string(&argvars[0]);
+ if (argvars[1].v_type == VAR_UNKNOWN)
+ seconds = time(NULL);
+ else
+ seconds = (time_t)get_tv_number(&argvars[1]);
+
+ struct tm curtime;
+ struct tm *curtime_ptr = os_localtime_r(&seconds, &curtime);
+ /* MSVC returns NULL for an invalid value of seconds. */
+ if (curtime_ptr == NULL)
+ rettv->vval.v_string = vim_strsave((char_u *)_("(Invalid)"));
+ else {
+ vimconv_T conv;
+ char_u *enc;
+
+ conv.vc_type = CONV_NONE;
+ enc = enc_locale();
+ convert_setup(&conv, p_enc, enc);
+ if (conv.vc_type != CONV_NONE)
+ p = string_convert(&conv, p, NULL);
+ if (p != NULL)
+ (void)strftime((char *)result_buf, sizeof(result_buf),
+ (char *)p, curtime_ptr);
+ else
+ result_buf[0] = NUL;
+
+ if (conv.vc_type != CONV_NONE)
+ free(p);
+ convert_setup(&conv, enc, p_enc);
+ if (conv.vc_type != CONV_NONE)
+ rettv->vval.v_string = string_convert(&conv, result_buf, NULL);
+ else
+ rettv->vval.v_string = vim_strsave(result_buf);
+
+ /* Release conversion descriptors */
+ convert_setup(&conv, NULL, NULL);
+ free(enc);
+ }
+}
+
+/*
+ * "stridx()" function
+ */
+static void f_stridx(typval_T *argvars, typval_T *rettv)
+{
+ char_u buf[NUMBUFLEN];
+ char_u *needle;
+ char_u *haystack;
+ char_u *save_haystack;
+ char_u *pos;
+ int start_idx;
+
+ needle = get_tv_string_chk(&argvars[1]);
+ save_haystack = haystack = get_tv_string_buf_chk(&argvars[0], buf);
+ rettv->vval.v_number = -1;
+ if (needle == NULL || haystack == NULL)
+ return; /* type error; errmsg already given */
+
+ if (argvars[2].v_type != VAR_UNKNOWN) {
+ int error = FALSE;
+
+ start_idx = get_tv_number_chk(&argvars[2], &error);
+ if (error || start_idx >= (int)STRLEN(haystack))
+ return;
+ if (start_idx >= 0)
+ haystack += start_idx;
+ }
+
+ pos = (char_u *)strstr((char *)haystack, (char *)needle);
+ if (pos != NULL)
+ rettv->vval.v_number = (varnumber_T)(pos - save_haystack);
+}
+
+/*
+ * "string()" function
+ */
+static void f_string(typval_T *argvars, typval_T *rettv)
+{
+ char_u *tofree;
+ char_u numbuf[NUMBUFLEN];
+
+ rettv->v_type = VAR_STRING;
+ rettv->vval.v_string = tv2string(&argvars[0], &tofree, numbuf, 0);
+ /* Make a copy if we have a value but it's not in allocated memory. */
+ if (rettv->vval.v_string != NULL && tofree == NULL)
+ rettv->vval.v_string = vim_strsave(rettv->vval.v_string);
+}
+
+/*
+ * "strlen()" function
+ */
+static void f_strlen(typval_T *argvars, typval_T *rettv)
+{
+ rettv->vval.v_number = (varnumber_T)(STRLEN(
+ get_tv_string(&argvars[0])));
+}
+
+/*
+ * "strchars()" function
+ */
+static void f_strchars(typval_T *argvars, typval_T *rettv)
+{
+ char_u *s = get_tv_string(&argvars[0]);
+ varnumber_T len = 0;
+
+ while (*s != NUL) {
+ mb_cptr2char_adv(&s);
+ ++len;
+ }
+ rettv->vval.v_number = len;
+}
+
+/*
+ * "strdisplaywidth()" function
+ */
+static void f_strdisplaywidth(typval_T *argvars, typval_T *rettv)
+{
+ char_u *s = get_tv_string(&argvars[0]);
+ int col = 0;
+
+ if (argvars[1].v_type != VAR_UNKNOWN)
+ col = get_tv_number(&argvars[1]);
+
+ rettv->vval.v_number = (varnumber_T)(linetabsize_col(col, s) - col);
+}
+
+/*
+ * "strwidth()" function
+ */
+static void f_strwidth(typval_T *argvars, typval_T *rettv)
+{
+ char_u *s = get_tv_string(&argvars[0]);
+
+ rettv->vval.v_number = (varnumber_T)(
+ mb_string2cells(s, -1)
+ );
+}
+
+/*
+ * "strpart()" function
+ */
+static void f_strpart(typval_T *argvars, typval_T *rettv)
+{
+ char_u *p;
+ int n;
+ int len;
+ int slen;
+ int error = FALSE;
+
+ p = get_tv_string(&argvars[0]);
+ slen = (int)STRLEN(p);
+
+ n = get_tv_number_chk(&argvars[1], &error);
+ if (error)
+ len = 0;
+ else if (argvars[2].v_type != VAR_UNKNOWN)
+ len = get_tv_number(&argvars[2]);
+ else
+ len = slen - n; /* default len: all bytes that are available. */
+
+ /*
+ * Only return the overlap between the specified part and the actual
+ * string.
+ */
+ if (n < 0) {
+ len += n;
+ n = 0;
+ } else if (n > slen)
+ n = slen;
+ if (len < 0)
+ len = 0;
+ else if (n + len > slen)
+ len = slen - n;
+
+ rettv->v_type = VAR_STRING;
+ rettv->vval.v_string = vim_strnsave(p + n, len);
+}
+
+/*
+ * "strridx()" function
+ */
+static void f_strridx(typval_T *argvars, typval_T *rettv)
+{
+ char_u buf[NUMBUFLEN];
+ char_u *needle;
+ char_u *haystack;
+ char_u *rest;
+ char_u *lastmatch = NULL;
+ int haystack_len, end_idx;
+
+ needle = get_tv_string_chk(&argvars[1]);
+ haystack = get_tv_string_buf_chk(&argvars[0], buf);
+
+ rettv->vval.v_number = -1;
+ if (needle == NULL || haystack == NULL)
+ return; /* type error; errmsg already given */
+
+ haystack_len = (int)STRLEN(haystack);
+ if (argvars[2].v_type != VAR_UNKNOWN) {
+ /* Third argument: upper limit for index */
+ end_idx = get_tv_number_chk(&argvars[2], NULL);
+ if (end_idx < 0)
+ return; /* can never find a match */
+ } else
+ end_idx = haystack_len;
+
+ if (*needle == NUL) {
+ /* Empty string matches past the end. */
+ lastmatch = haystack + end_idx;
+ } else {
+ for (rest = haystack; *rest != NUL; ++rest) {
+ rest = (char_u *)strstr((char *)rest, (char *)needle);
+ if (rest == NULL || rest > haystack + end_idx)
+ break;
+ lastmatch = rest;
+ }
+ }
+
+ if (lastmatch == NULL)
+ rettv->vval.v_number = -1;
+ else
+ rettv->vval.v_number = (varnumber_T)(lastmatch - haystack);
+}
+
+/*
+ * "strtrans()" function
+ */
+static void f_strtrans(typval_T *argvars, typval_T *rettv)
+{
+ rettv->v_type = VAR_STRING;
+ rettv->vval.v_string = transstr(get_tv_string(&argvars[0]));
+}
+
+/*
+ * "submatch()" function
+ */
+static void f_submatch(typval_T *argvars, typval_T *rettv)
+{
+ int error = FALSE;
+ int no = (int)get_tv_number_chk(&argvars[0], &error);
+ if (error) {
+ return;
+ }
+
+ int retList = 0;
+
+ if (argvars[1].v_type != VAR_UNKNOWN) {
+ retList = get_tv_number_chk(&argvars[1], &error);
+ if (error) {
+ return;
+ }
+ }
+
+ if (retList == 0) {
+ rettv->v_type = VAR_STRING;
+ rettv->vval.v_string = reg_submatch(no);
+ } else {
+ rettv->v_type = VAR_LIST;
+ rettv->vval.v_list = reg_submatch_list(no);
+ }
+}
+
+/*
+ * "substitute()" function
+ */
+static void f_substitute(typval_T *argvars, typval_T *rettv)
+{
+ char_u patbuf[NUMBUFLEN];
+ char_u subbuf[NUMBUFLEN];
+ char_u flagsbuf[NUMBUFLEN];
+
+ char_u *str = get_tv_string_chk(&argvars[0]);
+ char_u *pat = get_tv_string_buf_chk(&argvars[1], patbuf);
+ char_u *sub = get_tv_string_buf_chk(&argvars[2], subbuf);
+ char_u *flg = get_tv_string_buf_chk(&argvars[3], flagsbuf);
+
+ rettv->v_type = VAR_STRING;
+ if (str == NULL || pat == NULL || sub == NULL || flg == NULL)
+ rettv->vval.v_string = NULL;
+ else
+ rettv->vval.v_string = do_string_sub(str, pat, sub, flg);
+}
+
+/*
+ * "synID(lnum, col, trans)" function
+ */
+static void f_synID(typval_T *argvars, typval_T *rettv)
+{
+ int id = 0;
+ long lnum;
+ long col;
+ int trans;
+ int transerr = FALSE;
+
+ lnum = get_tv_lnum(argvars); /* -1 on type error */
+ col = get_tv_number(&argvars[1]) - 1; /* -1 on type error */
+ trans = get_tv_number_chk(&argvars[2], &transerr);
+
+ if (!transerr && lnum >= 1 && lnum <= curbuf->b_ml.ml_line_count
+ && col >= 0 && col < (long)STRLEN(ml_get(lnum)))
+ id = syn_get_id(curwin, lnum, (colnr_T)col, trans, NULL, FALSE);
+
+ rettv->vval.v_number = id;
+}
+
+/*
+ * "synIDattr(id, what [, mode])" function
+ */
+static void f_synIDattr(typval_T *argvars, typval_T *rettv)
+{
+ char_u *p = NULL;
+ int id;
+ char_u *what;
+ char_u *mode;
+ char_u modebuf[NUMBUFLEN];
+ int modec;
+
+ id = get_tv_number(&argvars[0]);
+ what = get_tv_string(&argvars[1]);
+ if (argvars[2].v_type != VAR_UNKNOWN) {
+ mode = get_tv_string_buf(&argvars[2], modebuf);
+ modec = TOLOWER_ASC(mode[0]);
+ if (modec != 't' && modec != 'c' && modec != 'g')
+ modec = 0; /* replace invalid with current */
+ } else {
+ if (t_colors > 1)
+ modec = 'c';
+ else
+ modec = 't';
+ }
+
+
+ switch (TOLOWER_ASC(what[0])) {
+ case 'b':
+ if (TOLOWER_ASC(what[1]) == 'g') /* bg[#] */
+ p = highlight_color(id, what, modec);
+ else /* bold */
+ p = highlight_has_attr(id, HL_BOLD, modec);
+ break;
+
+ case 'f': /* fg[#] or font */
+ p = highlight_color(id, what, modec);
+ break;
+
+ case 'i':
+ if (TOLOWER_ASC(what[1]) == 'n') /* inverse */
+ p = highlight_has_attr(id, HL_INVERSE, modec);
+ else /* italic */
+ p = highlight_has_attr(id, HL_ITALIC, modec);
+ break;
+
+ case 'n': /* name */
+ p = get_highlight_name(NULL, id - 1);
+ break;
+
+ case 'r': /* reverse */
+ p = highlight_has_attr(id, HL_INVERSE, modec);
+ break;
+
+ case 's':
+ if (TOLOWER_ASC(what[1]) == 'p') /* sp[#] */
+ p = highlight_color(id, what, modec);
+ else /* standout */
+ p = highlight_has_attr(id, HL_STANDOUT, modec);
+ break;
+
+ case 'u':
+ if (STRLEN(what) <= 5 || TOLOWER_ASC(what[5]) != 'c')
+ /* underline */
+ p = highlight_has_attr(id, HL_UNDERLINE, modec);
+ else
+ /* undercurl */
+ p = highlight_has_attr(id, HL_UNDERCURL, modec);
+ break;
+ }
+
+ if (p != NULL)
+ p = vim_strsave(p);
+ rettv->v_type = VAR_STRING;
+ rettv->vval.v_string = p;
+}
+
+/*
+ * "synIDtrans(id)" function
+ */
+static void f_synIDtrans(typval_T *argvars, typval_T *rettv)
+{
+ int id;
+
+ id = get_tv_number(&argvars[0]);
+
+ if (id > 0)
+ id = syn_get_final_id(id);
+ else
+ id = 0;
+
+ rettv->vval.v_number = id;
+}
+
+/*
+ * "synconcealed(lnum, col)" function
+ */
+static void f_synconcealed(typval_T *argvars, typval_T *rettv)
+{
+ long lnum;
+ long col;
+ int syntax_flags = 0;
+ int cchar;
+ int matchid = 0;
+ char_u str[NUMBUFLEN];
+
+ rettv->v_type = VAR_LIST;
+ rettv->vval.v_list = NULL;
+
+ lnum = get_tv_lnum(argvars); /* -1 on type error */
+ col = get_tv_number(&argvars[1]) - 1; /* -1 on type error */
+
+ memset(str, NUL, sizeof(str));
+
+ rettv_list_alloc(rettv);
+ if (lnum >= 1 && lnum <= curbuf->b_ml.ml_line_count && col >= 0
+ && col <= (long)STRLEN(ml_get(lnum)) && curwin->w_p_cole > 0) {
+ (void)syn_get_id(curwin, lnum, col, FALSE, NULL, FALSE);
+ syntax_flags = get_syntax_info(&matchid);
+
+ // get the conceal character
+ if ((syntax_flags & HL_CONCEAL) && curwin->w_p_cole < 3) {
+ cchar = syn_get_sub_char();
+ if (cchar == NUL && curwin->w_p_cole == 1 && lcs_conceal != NUL) {
+ cchar = lcs_conceal;
+ }
+ if (cchar != NUL) {
+ if (has_mbyte)
+ (*mb_char2bytes)(cchar, str);
+ else
+ str[0] = cchar;
+ }
+ }
+ }
+
+ list_append_number(rettv->vval.v_list, (syntax_flags & HL_CONCEAL) != 0);
+ // -1 to auto-determine strlen
+ list_append_string(rettv->vval.v_list, str, -1);
+ list_append_number(rettv->vval.v_list, matchid);
+}
+
+/*
+ * "synstack(lnum, col)" function
+ */
+static void f_synstack(typval_T *argvars, typval_T *rettv)
+{
+ long lnum;
+ long col;
+
+ rettv->v_type = VAR_LIST;
+ rettv->vval.v_list = NULL;
+
+ lnum = get_tv_lnum(argvars); /* -1 on type error */
+ col = get_tv_number(&argvars[1]) - 1; /* -1 on type error */
+
+ if (lnum >= 1
+ && lnum <= curbuf->b_ml.ml_line_count
+ && col >= 0
+ && col <= (long)STRLEN(ml_get(lnum))) {
+ rettv_list_alloc(rettv);
+ (void)syn_get_id(curwin, lnum, (colnr_T)col, FALSE, NULL, TRUE);
+
+ int id;
+ int i = 0;
+ while ((id = syn_get_stack_item(i++)) >= 0) {
+ list_append_number(rettv->vval.v_list, id);
+ }
+ }
+}
+
+/*
+ * "system()" function
+ */
+static void f_system(typval_T *argvars, typval_T *rettv)
+{
+ char_u *res = NULL;
+ char_u *p;
+ char_u *infile = NULL;
+ char_u buf[NUMBUFLEN];
+ int err = FALSE;
+ FILE *fd;
+
+ if (check_restricted() || check_secure())
+ goto done;
+
+ if (argvars[1].v_type != VAR_UNKNOWN) {
+ /*
+ * Write the string to a temp file, to be used for input of the shell
+ * command.
+ */
+ if ((infile = vim_tempname('i')) == NULL) {
+ EMSG(_(e_notmp));
+ goto done;
+ }
+
+ fd = mch_fopen((char *)infile, WRITEBIN);
+ if (fd == NULL) {
+ EMSG2(_(e_notopen), infile);
+ goto done;
+ }
+ p = get_tv_string_buf_chk(&argvars[1], buf);
+ if (p == NULL) {
+ fclose(fd);
+ goto done; /* type error; errmsg already given */
+ }
+ if (fwrite(p, STRLEN(p), 1, fd) != 1)
+ err = TRUE;
+ if (fclose(fd) != 0)
+ err = TRUE;
+ if (err) {
+ EMSG(_("E677: Error writing temp file"));
+ goto done;
+ }
+ }
+
+ res = get_cmd_output(get_tv_string(&argvars[0]), infile,
+ kShellOptSilent | kShellOptCooked);
+
+#ifdef USE_CR
+ /* translate <CR> into <NL> */
+ if (res != NULL) {
+ char_u *s;
+
+ for (s = res; *s; ++s) {
+ if (*s == CAR)
+ *s = NL;
+ }
+ }
+#else
+# ifdef USE_CRNL
+ /* translate <CR><NL> into <NL> */
+ if (res != NULL) {
+ char_u *s, *d;
+
+ d = res;
+ for (s = res; *s; ++s) {
+ if (s[0] == CAR && s[1] == NL)
+ ++s;
+ *d++ = *s;
+ }
+ *d = NUL;
+ }
+# endif
+#endif
+
+done:
+ if (infile != NULL) {
+ os_remove((char *)infile);
+ free(infile);
+ }
+ rettv->v_type = VAR_STRING;
+ rettv->vval.v_string = res;
+}
+
+/*
+ * "tabpagebuflist()" function
+ */
+static void f_tabpagebuflist(typval_T *argvars, typval_T *rettv)
+{
+ tabpage_T *tp;
+ win_T *wp = NULL;
+
+ if (argvars[0].v_type == VAR_UNKNOWN)
+ wp = firstwin;
+ else {
+ tp = find_tabpage((int)get_tv_number(&argvars[0]));
+ if (tp != NULL)
+ wp = (tp == curtab) ? firstwin : tp->tp_firstwin;
+ }
+ if (wp != NULL) {
+ rettv_list_alloc(rettv);
+ while (wp != NULL) {
+ list_append_number(rettv->vval.v_list, wp->w_buffer->b_fnum);
+ wp = wp->w_next;
+ }
+ }
+}
+
+
+/*
+ * "tabpagenr()" function
+ */
+static void f_tabpagenr(typval_T *argvars, typval_T *rettv)
+{
+ int nr = 1;
+ char_u *arg;
+
+ if (argvars[0].v_type != VAR_UNKNOWN) {
+ arg = get_tv_string_chk(&argvars[0]);
+ nr = 0;
+ if (arg != NULL) {
+ if (STRCMP(arg, "$") == 0)
+ nr = tabpage_index(NULL) - 1;
+ else
+ EMSG2(_(e_invexpr2), arg);
+ }
+ } else
+ nr = tabpage_index(curtab);
+ rettv->vval.v_number = nr;
+}
+
+
+static int get_winnr(tabpage_T *tp, typval_T *argvar);
+
+/*
+ * Common code for tabpagewinnr() and winnr().
+ */
+static int get_winnr(tabpage_T *tp, typval_T *argvar)
+{
+ win_T *twin;
+ int nr = 1;
+ win_T *wp;
+ char_u *arg;
+
+ twin = (tp == curtab) ? curwin : tp->tp_curwin;
+ if (argvar->v_type != VAR_UNKNOWN) {
+ arg = get_tv_string_chk(argvar);
+ if (arg == NULL)
+ nr = 0; /* type error; errmsg already given */
+ else if (STRCMP(arg, "$") == 0)
+ twin = (tp == curtab) ? lastwin : tp->tp_lastwin;
+ else if (STRCMP(arg, "#") == 0) {
+ twin = (tp == curtab) ? prevwin : tp->tp_prevwin;
+ if (twin == NULL)
+ nr = 0;
+ } else {
+ EMSG2(_(e_invexpr2), arg);
+ nr = 0;
+ }
+ }
+
+ if (nr > 0)
+ for (wp = (tp == curtab) ? firstwin : tp->tp_firstwin;
+ wp != twin; wp = wp->w_next) {
+ if (wp == NULL) {
+ /* didn't find it in this tabpage */
+ nr = 0;
+ break;
+ }
+ ++nr;
+ }
+ return nr;
+}
+
+/*
+ * "tabpagewinnr()" function
+ */
+static void f_tabpagewinnr(typval_T *argvars, typval_T *rettv)
+{
+ int nr = 1;
+ tabpage_T *tp;
+
+ tp = find_tabpage((int)get_tv_number(&argvars[0]));
+ if (tp == NULL)
+ nr = 0;
+ else
+ nr = get_winnr(tp, &argvars[1]);
+ rettv->vval.v_number = nr;
+}
+
+
+/*
+ * "tagfiles()" function
+ */
+static void f_tagfiles(typval_T *argvars, typval_T *rettv)
+{
+ char_u *fname;
+ tagname_T tn;
+
+ rettv_list_alloc(rettv);
+ fname = alloc(MAXPATHL);
+
+ int first = TRUE;
+ while (get_tagfname(&tn, first, fname) == OK) {
+ list_append_string(rettv->vval.v_list, fname, -1);
+ first = FALSE;
+ }
+
+ tagname_free(&tn);
+ free(fname);
+}
+
+/*
+ * "taglist()" function
+ */
+static void f_taglist(typval_T *argvars, typval_T *rettv)
+{
+ char_u *tag_pattern;
+
+ tag_pattern = get_tv_string(&argvars[0]);
+
+ rettv->vval.v_number = FALSE;
+ if (*tag_pattern == NUL)
+ return;
+
+ rettv_list_alloc(rettv);
+ (void)get_tags(rettv->vval.v_list, tag_pattern);
+}
+
+/*
+ * "tempname()" function
+ */
+static void f_tempname(typval_T *argvars, typval_T *rettv)
+{
+ static int x = 'A';
+
+ rettv->v_type = VAR_STRING;
+ rettv->vval.v_string = vim_tempname(x);
+
+ /* Advance 'x' to use A-Z and 0-9, so that there are at least 34 different
+ * names. Skip 'I' and 'O', they are used for shell redirection. */
+ do {
+ if (x == 'Z')
+ x = '0';
+ else if (x == '9')
+ x = 'A';
+ else {
+ ++x;
+ }
+ } while (x == 'I' || x == 'O');
+}
+
+/*
+ * "test(list)" function: Just checking the walls...
+ */
+static void f_test(typval_T *argvars, typval_T *rettv)
+{
+ /* Used for unit testing. Change the code below to your liking. */
+}
+
+/*
+ * "tan()" function
+ */
+static void f_tan(typval_T *argvars, typval_T *rettv)
+{
+ float_T f;
+
+ rettv->v_type = VAR_FLOAT;
+ if (get_float_arg(argvars, &f) == OK)
+ rettv->vval.v_float = tan(f);
+ else
+ rettv->vval.v_float = 0.0;
+}
+
+/*
+ * "tanh()" function
+ */
+static void f_tanh(typval_T *argvars, typval_T *rettv)
+{
+ float_T f;
+
+ rettv->v_type = VAR_FLOAT;
+ if (get_float_arg(argvars, &f) == OK)
+ rettv->vval.v_float = tanh(f);
+ else
+ rettv->vval.v_float = 0.0;
+}
+
+/*
+ * "tolower(string)" function
+ */
+static void f_tolower(typval_T *argvars, typval_T *rettv)
+{
+ char_u *p;
+
+ p = vim_strsave(get_tv_string(&argvars[0]));
+ rettv->v_type = VAR_STRING;
+ rettv->vval.v_string = p;
+
+ if (p != NULL)
+ while (*p != NUL) {
+ int l;
+
+ if (enc_utf8) {
+ int c, lc;
+
+ c = utf_ptr2char(p);
+ lc = utf_tolower(c);
+ l = utf_ptr2len(p);
+ /* TODO: reallocate string when byte count changes. */
+ if (utf_char2len(lc) == l)
+ utf_char2bytes(lc, p);
+ p += l;
+ } else if (has_mbyte && (l = (*mb_ptr2len)(p)) > 1)
+ p += l; /* skip multi-byte character */
+ else {
+ *p = TOLOWER_LOC(*p); /* note that tolower() can be a macro */
+ ++p;
+ }
+ }
+}
+
+/*
+ * "toupper(string)" function
+ */
+static void f_toupper(typval_T *argvars, typval_T *rettv)
+{
+ rettv->v_type = VAR_STRING;
+ rettv->vval.v_string = strup_save(get_tv_string(&argvars[0]));
+}
+
+/*
+ * "tr(string, fromstr, tostr)" function
+ */
+static void f_tr(typval_T *argvars, typval_T *rettv)
+{
+ char_u *in_str;
+ char_u *fromstr;
+ char_u *tostr;
+ char_u *p;
+ int inlen;
+ int fromlen;
+ int tolen;
+ int idx;
+ char_u *cpstr;
+ int cplen;
+ int first = TRUE;
+ char_u buf[NUMBUFLEN];
+ char_u buf2[NUMBUFLEN];
+ garray_T ga;
+
+ in_str = get_tv_string(&argvars[0]);
+ fromstr = get_tv_string_buf_chk(&argvars[1], buf);
+ tostr = get_tv_string_buf_chk(&argvars[2], buf2);
+
+ /* Default return value: empty string. */
+ rettv->v_type = VAR_STRING;
+ rettv->vval.v_string = NULL;
+ if (fromstr == NULL || tostr == NULL)
+ return; /* type error; errmsg already given */
+ ga_init(&ga, (int)sizeof(char), 80);
+
+ if (!has_mbyte)
+ /* not multi-byte: fromstr and tostr must be the same length */
+ if (STRLEN(fromstr) != STRLEN(tostr)) {
+error:
+ EMSG2(_(e_invarg2), fromstr);
+ ga_clear(&ga);
+ return;
+ }
+
+ /* fromstr and tostr have to contain the same number of chars */
+ while (*in_str != NUL) {
+ if (has_mbyte) {
+ inlen = (*mb_ptr2len)(in_str);
+ cpstr = in_str;
+ cplen = inlen;
+ idx = 0;
+ for (p = fromstr; *p != NUL; p += fromlen) {
+ fromlen = (*mb_ptr2len)(p);
+ if (fromlen == inlen && STRNCMP(in_str, p, inlen) == 0) {
+ for (p = tostr; *p != NUL; p += tolen) {
+ tolen = (*mb_ptr2len)(p);
+ if (idx-- == 0) {
+ cplen = tolen;
+ cpstr = p;
+ break;
+ }
+ }
+ if (*p == NUL) /* tostr is shorter than fromstr */
+ goto error;
+ break;
+ }
+ ++idx;
+ }
+
+ if (first && cpstr == in_str) {
+ /* Check that fromstr and tostr have the same number of
+ * (multi-byte) characters. Done only once when a character
+ * of in_str doesn't appear in fromstr. */
+ first = FALSE;
+ for (p = tostr; *p != NUL; p += tolen) {
+ tolen = (*mb_ptr2len)(p);
+ --idx;
+ }
+ if (idx != 0)
+ goto error;
+ }
+
+ ga_grow(&ga, cplen);
+ memmove((char *)ga.ga_data + ga.ga_len, cpstr, (size_t)cplen);
+ ga.ga_len += cplen;
+
+ in_str += inlen;
+ } else {
+ /* When not using multi-byte chars we can do it faster. */
+ p = vim_strchr(fromstr, *in_str);
+ if (p != NULL)
+ ga_append(&ga, tostr[p - fromstr]);
+ else
+ ga_append(&ga, *in_str);
+ ++in_str;
+ }
+ }
+
+ /* add a terminating NUL */
+ ga_grow(&ga, 1);
+ ga_append(&ga, NUL);
+
+ rettv->vval.v_string = ga.ga_data;
+}
+
+/*
+ * "trunc({float})" function
+ */
+static void f_trunc(typval_T *argvars, typval_T *rettv)
+{
+ float_T f;
+
+ rettv->v_type = VAR_FLOAT;
+ if (get_float_arg(argvars, &f) == OK)
+ /* trunc() is not in C90, use floor() or ceil() instead. */
+ rettv->vval.v_float = f > 0 ? floor(f) : ceil(f);
+ else
+ rettv->vval.v_float = 0.0;
+}
+
+/*
+ * "type(expr)" function
+ */
+static void f_type(typval_T *argvars, typval_T *rettv)
+{
+ int n;
+
+ switch (argvars[0].v_type) {
+ case VAR_NUMBER: n = 0; break;
+ case VAR_STRING: n = 1; break;
+ case VAR_FUNC: n = 2; break;
+ case VAR_LIST: n = 3; break;
+ case VAR_DICT: n = 4; break;
+ case VAR_FLOAT: n = 5; break;
+ default: EMSG2(_(e_intern2), "f_type()"); n = 0; break;
+ }
+ rettv->vval.v_number = n;
+}
+
+/*
+ * "undofile(name)" function
+ */
+static void f_undofile(typval_T *argvars, typval_T *rettv)
+{
+ rettv->v_type = VAR_STRING;
+ {
+ char_u *fname = get_tv_string(&argvars[0]);
+
+ if (*fname == NUL) {
+ /* If there is no file name there will be no undo file. */
+ rettv->vval.v_string = NULL;
+ } else {
+ char_u *ffname = FullName_save(fname, FALSE);
+
+ if (ffname != NULL)
+ rettv->vval.v_string = u_get_undo_file_name(ffname, FALSE);
+ free(ffname);
+ }
+ }
+}
+
+/*
+ * "undotree()" function
+ */
+static void f_undotree(typval_T *argvars, typval_T *rettv)
+{
+ if (rettv_dict_alloc(rettv) == OK) {
+ dict_T *dict = rettv->vval.v_dict;
+ list_T *list;
+
+ dict_add_nr_str(dict, "synced", (long)curbuf->b_u_synced, NULL);
+ dict_add_nr_str(dict, "seq_last", curbuf->b_u_seq_last, NULL);
+ dict_add_nr_str(dict, "save_last",
+ (long)curbuf->b_u_save_nr_last, NULL);
+ dict_add_nr_str(dict, "seq_cur", curbuf->b_u_seq_cur, NULL);
+ dict_add_nr_str(dict, "time_cur", (long)curbuf->b_u_time_cur, NULL);
+ dict_add_nr_str(dict, "save_cur", (long)curbuf->b_u_save_nr_cur, NULL);
+
+ list = list_alloc();
+ if (list != NULL) {
+ u_eval_tree(curbuf->b_u_oldhead, list);
+ dict_add_list(dict, "entries", list);
+ }
+ }
+}
+
+/*
+ * "values(dict)" function
+ */
+static void f_values(typval_T *argvars, typval_T *rettv)
+{
+ dict_list(argvars, rettv, 1);
+}
+
+/*
+ * "virtcol(string)" function
+ */
+static void f_virtcol(typval_T *argvars, typval_T *rettv)
+{
+ colnr_T vcol = 0;
+ pos_T *fp;
+ int fnum = curbuf->b_fnum;
+
+ fp = var2fpos(&argvars[0], FALSE, &fnum);
+ if (fp != NULL && fp->lnum <= curbuf->b_ml.ml_line_count
+ && fnum == curbuf->b_fnum) {
+ getvvcol(curwin, fp, NULL, NULL, &vcol);
+ ++vcol;
+ }
+
+ rettv->vval.v_number = vcol;
+}
+
+/*
+ * "visualmode()" function
+ */
+static void f_visualmode(typval_T *argvars, typval_T *rettv)
+{
+ char_u str[2];
+
+ rettv->v_type = VAR_STRING;
+ str[0] = curbuf->b_visual_mode_eval;
+ str[1] = NUL;
+ rettv->vval.v_string = vim_strsave(str);
+
+ /* A non-zero number or non-empty string argument: reset mode. */
+ if (non_zero_arg(&argvars[0]))
+ curbuf->b_visual_mode_eval = NUL;
+}
+
+/*
+ * "wildmenumode()" function
+ */
+static void f_wildmenumode(typval_T *argvars, typval_T *rettv)
+{
+ if (wild_menu_showing)
+ rettv->vval.v_number = 1;
+}
+
+/*
+ * "winbufnr(nr)" function
+ */
+static void f_winbufnr(typval_T *argvars, typval_T *rettv)
+{
+ win_T *wp;
+
+ wp = find_win_by_nr(&argvars[0], NULL);
+ if (wp == NULL)
+ rettv->vval.v_number = -1;
+ else
+ rettv->vval.v_number = wp->w_buffer->b_fnum;
+}
+
+/*
+ * "wincol()" function
+ */
+static void f_wincol(typval_T *argvars, typval_T *rettv)
+{
+ validate_cursor();
+ rettv->vval.v_number = curwin->w_wcol + 1;
+}
+
+/*
+ * "winheight(nr)" function
+ */
+static void f_winheight(typval_T *argvars, typval_T *rettv)
+{
+ win_T *wp;
+
+ wp = find_win_by_nr(&argvars[0], NULL);
+ if (wp == NULL)
+ rettv->vval.v_number = -1;
+ else
+ rettv->vval.v_number = wp->w_height;
+}
+
+/*
+ * "winline()" function
+ */
+static void f_winline(typval_T *argvars, typval_T *rettv)
+{
+ validate_cursor();
+ rettv->vval.v_number = curwin->w_wrow + 1;
+}
+
+/*
+ * "winnr()" function
+ */
+static void f_winnr(typval_T *argvars, typval_T *rettv)
+{
+ int nr = 1;
+
+ nr = get_winnr(curtab, &argvars[0]);
+ rettv->vval.v_number = nr;
+}
+
+/*
+ * "winrestcmd()" function
+ */
+static void f_winrestcmd(typval_T *argvars, typval_T *rettv)
+{
+ win_T *wp;
+ int winnr = 1;
+ garray_T ga;
+ char_u buf[50];
+
+ ga_init(&ga, (int)sizeof(char), 70);
+ for (wp = firstwin; wp != NULL; wp = wp->w_next) {
+ sprintf((char *)buf, "%dresize %d|", winnr, wp->w_height);
+ ga_concat(&ga, buf);
+ sprintf((char *)buf, "vert %dresize %d|", winnr, wp->w_width);
+ ga_concat(&ga, buf);
+ ++winnr;
+ }
+ ga_append(&ga, NUL);
+
+ rettv->vval.v_string = ga.ga_data;
+ rettv->v_type = VAR_STRING;
+}
+
+/*
+ * "winrestview()" function
+ */
+static void f_winrestview(typval_T *argvars, typval_T *rettv)
+{
+ dict_T *dict;
+
+ if (argvars[0].v_type != VAR_DICT
+ || (dict = argvars[0].vval.v_dict) == NULL)
+ EMSG(_(e_invarg));
+ else {
+ curwin->w_cursor.lnum = get_dict_number(dict, (char_u *)"lnum");
+ curwin->w_cursor.col = get_dict_number(dict, (char_u *)"col");
+ curwin->w_cursor.coladd = get_dict_number(dict, (char_u *)"coladd");
+ curwin->w_curswant = get_dict_number(dict, (char_u *)"curswant");
+ curwin->w_set_curswant = FALSE;
+
+ set_topline(curwin, get_dict_number(dict, (char_u *)"topline"));
+ curwin->w_topfill = get_dict_number(dict, (char_u *)"topfill");
+ curwin->w_leftcol = get_dict_number(dict, (char_u *)"leftcol");
+ curwin->w_skipcol = get_dict_number(dict, (char_u *)"skipcol");
+
+ check_cursor();
+ win_new_height(curwin, curwin->w_height);
+ win_new_width(curwin, W_WIDTH(curwin));
+ changed_window_setting();
+
+ if (curwin->w_topline == 0)
+ curwin->w_topline = 1;
+ if (curwin->w_topline > curbuf->b_ml.ml_line_count)
+ curwin->w_topline = curbuf->b_ml.ml_line_count;
+ check_topfill(curwin, TRUE);
+ }
+}
+
+/*
+ * "winsaveview()" function
+ */
+static void f_winsaveview(typval_T *argvars, typval_T *rettv)
+{
+ dict_T *dict;
+
+ if (rettv_dict_alloc(rettv) == FAIL)
+ return;
+ dict = rettv->vval.v_dict;
+
+ dict_add_nr_str(dict, "lnum", (long)curwin->w_cursor.lnum, NULL);
+ dict_add_nr_str(dict, "col", (long)curwin->w_cursor.col, NULL);
+ dict_add_nr_str(dict, "coladd", (long)curwin->w_cursor.coladd, NULL);
+ update_curswant();
+ dict_add_nr_str(dict, "curswant", (long)curwin->w_curswant, NULL);
+
+ dict_add_nr_str(dict, "topline", (long)curwin->w_topline, NULL);
+ dict_add_nr_str(dict, "topfill", (long)curwin->w_topfill, NULL);
+ dict_add_nr_str(dict, "leftcol", (long)curwin->w_leftcol, NULL);
+ dict_add_nr_str(dict, "skipcol", (long)curwin->w_skipcol, NULL);
+}
+
+/*
+ * "winwidth(nr)" function
+ */
+static void f_winwidth(typval_T *argvars, typval_T *rettv)
+{
+ win_T *wp;
+
+ wp = find_win_by_nr(&argvars[0], NULL);
+ if (wp == NULL)
+ rettv->vval.v_number = -1;
+ else
+ rettv->vval.v_number = wp->w_width;
+}
+
+/*
+ * "writefile()" function
+ */
+static void f_writefile(typval_T *argvars, typval_T *rettv)
+{
+ int binary = FALSE;
+ char_u *fname;
+ FILE *fd;
+ listitem_T *li;
+ char_u *s;
+ int ret = 0;
+ int c;
+
+ if (check_restricted() || check_secure())
+ return;
+
+ if (argvars[0].v_type != VAR_LIST) {
+ EMSG2(_(e_listarg), "writefile()");
+ return;
+ }
+ if (argvars[0].vval.v_list == NULL)
+ return;
+
+ if (argvars[2].v_type != VAR_UNKNOWN
+ && STRCMP(get_tv_string(&argvars[2]), "b") == 0)
+ binary = TRUE;
+
+ /* Always open the file in binary mode, library functions have a mind of
+ * their own about CR-LF conversion. */
+ fname = get_tv_string(&argvars[1]);
+ if (*fname == NUL || (fd = mch_fopen((char *)fname, WRITEBIN)) == NULL) {
+ EMSG2(_(e_notcreate), *fname == NUL ? (char_u *)_("<empty>") : fname);
+ ret = -1;
+ } else {
+ for (li = argvars[0].vval.v_list->lv_first; li != NULL;
+ li = li->li_next) {
+ for (s = get_tv_string(&li->li_tv); *s != NUL; ++s) {
+ if (*s == '\n')
+ c = putc(NUL, fd);
+ else
+ c = putc(*s, fd);
+ if (c == EOF) {
+ ret = -1;
+ break;
+ }
+ }
+ if (!binary || li->li_next != NULL)
+ if (putc('\n', fd) == EOF) {
+ ret = -1;
+ break;
+ }
+ if (ret < 0) {
+ EMSG(_(e_write));
+ break;
+ }
+ }
+ fclose(fd);
+ }
+
+ rettv->vval.v_number = ret;
+}
+
+/*
+ * "xor(expr, expr)" function
+ */
+static void f_xor(typval_T *argvars, typval_T *rettv)
+{
+ rettv->vval.v_number = get_tv_number_chk(&argvars[0], NULL)
+ ^ get_tv_number_chk(&argvars[1], NULL);
+}
+
+
+/*
+ * Translate a String variable into a position.
+ * Returns NULL when there is an error.
+ */
+static pos_T *
+var2fpos (
+ typval_T *varp,
+ int dollar_lnum, /* TRUE when $ is last line */
+ int *fnum /* set to fnum for '0, 'A, etc. */
+)
+{
+ char_u *name;
+ static pos_T pos;
+ pos_T *pp;
+
+ /* Argument can be [lnum, col, coladd]. */
+ if (varp->v_type == VAR_LIST) {
+ list_T *l;
+ int len;
+ int error = FALSE;
+ listitem_T *li;
+
+ l = varp->vval.v_list;
+ if (l == NULL)
+ return NULL;
+
+ /* Get the line number */
+ pos.lnum = list_find_nr(l, 0L, &error);
+ if (error || pos.lnum <= 0 || pos.lnum > curbuf->b_ml.ml_line_count)
+ return NULL; /* invalid line number */
+
+ /* Get the column number */
+ pos.col = list_find_nr(l, 1L, &error);
+ if (error)
+ return NULL;
+ len = (long)STRLEN(ml_get(pos.lnum));
+
+ /* We accept "$" for the column number: last column. */
+ li = list_find(l, 1L);
+ if (li != NULL && li->li_tv.v_type == VAR_STRING
+ && li->li_tv.vval.v_string != NULL
+ && STRCMP(li->li_tv.vval.v_string, "$") == 0)
+ pos.col = len + 1;
+
+ /* Accept a position up to the NUL after the line. */
+ if (pos.col == 0 || (int)pos.col > len + 1)
+ return NULL; /* invalid column number */
+ --pos.col;
+
+ /* Get the virtual offset. Defaults to zero. */
+ pos.coladd = list_find_nr(l, 2L, &error);
+ if (error)
+ pos.coladd = 0;
+
+ return &pos;
+ }
+
+ name = get_tv_string_chk(varp);
+ if (name == NULL)
+ return NULL;
+ if (name[0] == '.') /* cursor */
+ return &curwin->w_cursor;
+ if (name[0] == 'v' && name[1] == NUL) { /* Visual start */
+ if (VIsual_active)
+ return &VIsual;
+ return &curwin->w_cursor;
+ }
+ if (name[0] == '\'') { /* mark */
+ pp = getmark_buf_fnum(curbuf, name[1], FALSE, fnum);
+ if (pp == NULL || pp == (pos_T *)-1 || pp->lnum <= 0)
+ return NULL;
+ return pp;
+ }
+
+ pos.coladd = 0;
+
+ if (name[0] == 'w' && dollar_lnum) {
+ pos.col = 0;
+ if (name[1] == '0') { /* "w0": first visible line */
+ update_topline();
+ pos.lnum = curwin->w_topline;
+ return &pos;
+ } else if (name[1] == '$') { /* "w$": last visible line */
+ validate_botline();
+ pos.lnum = curwin->w_botline - 1;
+ return &pos;
+ }
+ } else if (name[0] == '$') { /* last column or line */
+ if (dollar_lnum) {
+ pos.lnum = curbuf->b_ml.ml_line_count;
+ pos.col = 0;
+ } else {
+ pos.lnum = curwin->w_cursor.lnum;
+ pos.col = (colnr_T)STRLEN(ml_get_curline());
+ }
+ return &pos;
+ }
+ return NULL;
+}
+
+/*
+ * Convert list in "arg" into a position and optional file number.
+ * When "fnump" is NULL there is no file number, only 3 items.
+ * Note that the column is passed on as-is, the caller may want to decrement
+ * it to use 1 for the first column.
+ * Return FAIL when conversion is not possible, doesn't check the position for
+ * validity.
+ */
+static int list2fpos(typval_T *arg, pos_T *posp, int *fnump)
+{
+ list_T *l = arg->vval.v_list;
+ long i = 0;
+ long n;
+
+ /* List must be: [fnum, lnum, col, coladd], where "fnum" is only there
+ * when "fnump" isn't NULL and "coladd" is optional. */
+ if (arg->v_type != VAR_LIST
+ || l == NULL
+ || l->lv_len < (fnump == NULL ? 2 : 3)
+ || l->lv_len > (fnump == NULL ? 3 : 4))
+ return FAIL;
+
+ if (fnump != NULL) {
+ n = list_find_nr(l, i++, NULL); /* fnum */
+ if (n < 0)
+ return FAIL;
+ if (n == 0)
+ n = curbuf->b_fnum; /* current buffer */
+ *fnump = n;
+ }
+
+ n = list_find_nr(l, i++, NULL); /* lnum */
+ if (n < 0)
+ return FAIL;
+ posp->lnum = n;
+
+ n = list_find_nr(l, i++, NULL); /* col */
+ if (n < 0)
+ return FAIL;
+ posp->col = n;
+
+ n = list_find_nr(l, i, NULL);
+ if (n < 0)
+ posp->coladd = 0;
+ else
+ posp->coladd = n;
+
+ return OK;
+}
+
+/*
+ * Get the length of an environment variable name.
+ * Advance "arg" to the first character after the name.
+ * Return 0 for error.
+ */
+static int get_env_len(char_u **arg)
+{
+ char_u *p;
+ int len;
+
+ for (p = *arg; vim_isIDc(*p); ++p)
+ ;
+ if (p == *arg) /* no name found */
+ return 0;
+
+ len = (int)(p - *arg);
+ *arg = p;
+ return len;
+}
+
+/*
+ * Get the length of the name of a function or internal variable.
+ * "arg" is advanced to the first non-white character after the name.
+ * Return 0 if something is wrong.
+ */
+static int get_id_len(char_u **arg)
+{
+ char_u *p;
+ int len;
+
+ /* Find the end of the name. */
+ for (p = *arg; eval_isnamec(*p); ++p)
+ ;
+ if (p == *arg) /* no name found */
+ return 0;
+
+ len = (int)(p - *arg);
+ *arg = skipwhite(p);
+
+ return len;
+}
+
+/*
+ * Get the length of the name of a variable or function.
+ * Only the name is recognized, does not handle ".key" or "[idx]".
+ * "arg" is advanced to the first non-white character after the name.
+ * Return -1 if curly braces expansion failed.
+ * Return 0 if something else is wrong.
+ * If the name contains 'magic' {}'s, expand them and return the
+ * expanded name in an allocated string via 'alias' - caller must free.
+ */
+static int get_name_len(char_u **arg, char_u **alias, int evaluate, int verbose)
+{
+ int len;
+ char_u *p;
+ char_u *expr_start;
+ char_u *expr_end;
+
+ *alias = NULL; /* default to no alias */
+
+ if ((*arg)[0] == K_SPECIAL && (*arg)[1] == KS_EXTRA
+ && (*arg)[2] == (int)KE_SNR) {
+ /* hard coded <SNR>, already translated */
+ *arg += 3;
+ return get_id_len(arg) + 3;
+ }
+ len = eval_fname_script(*arg);
+ if (len > 0) {
+ /* literal "<SID>", "s:" or "<SNR>" */
+ *arg += len;
+ }
+
+ /*
+ * Find the end of the name; check for {} construction.
+ */
+ p = find_name_end(*arg, &expr_start, &expr_end,
+ len > 0 ? 0 : FNE_CHECK_START);
+ if (expr_start != NULL) {
+ char_u *temp_string;
+
+ if (!evaluate) {
+ len += (int)(p - *arg);
+ *arg = skipwhite(p);
+ return len;
+ }
+
+ /*
+ * Include any <SID> etc in the expanded string:
+ * Thus the -len here.
+ */
+ temp_string = make_expanded_name(*arg - len, expr_start, expr_end, p);
+ if (temp_string == NULL)
+ return -1;
+ *alias = temp_string;
+ *arg = skipwhite(p);
+ return (int)STRLEN(temp_string);
+ }
+
+ len += get_id_len(arg);
+ if (len == 0 && verbose)
+ EMSG2(_(e_invexpr2), *arg);
+
+ return len;
+}
+
+/*
+ * Find the end of a variable or function name, taking care of magic braces.
+ * If "expr_start" is not NULL then "expr_start" and "expr_end" are set to the
+ * start and end of the first magic braces item.
+ * "flags" can have FNE_INCL_BR and FNE_CHECK_START.
+ * Return a pointer to just after the name. Equal to "arg" if there is no
+ * valid name.
+ */
+static char_u *find_name_end(char_u *arg, char_u **expr_start, char_u **expr_end, int flags)
+{
+ int mb_nest = 0;
+ int br_nest = 0;
+ char_u *p;
+
+ if (expr_start != NULL) {
+ *expr_start = NULL;
+ *expr_end = NULL;
+ }
+
+ /* Quick check for valid starting character. */
+ if ((flags & FNE_CHECK_START) && !eval_isnamec1(*arg) && *arg != '{')
+ return arg;
+
+ for (p = arg; *p != NUL
+ && (eval_isnamec(*p)
+ || *p == '{'
+ || ((flags & FNE_INCL_BR) && (*p == '[' || *p == '.'))
+ || mb_nest != 0
+ || br_nest != 0); mb_ptr_adv(p)) {
+ if (*p == '\'') {
+ /* skip over 'string' to avoid counting [ and ] inside it. */
+ for (p = p + 1; *p != NUL && *p != '\''; mb_ptr_adv(p))
+ ;
+ if (*p == NUL)
+ break;
+ } else if (*p == '"') {
+ /* skip over "str\"ing" to avoid counting [ and ] inside it. */
+ for (p = p + 1; *p != NUL && *p != '"'; mb_ptr_adv(p))
+ if (*p == '\\' && p[1] != NUL)
+ ++p;
+ if (*p == NUL)
+ break;
+ }
+
+ if (mb_nest == 0) {
+ if (*p == '[')
+ ++br_nest;
+ else if (*p == ']')
+ --br_nest;
+ }
+
+ if (br_nest == 0) {
+ if (*p == '{') {
+ mb_nest++;
+ if (expr_start != NULL && *expr_start == NULL)
+ *expr_start = p;
+ } else if (*p == '}') {
+ mb_nest--;
+ if (expr_start != NULL && mb_nest == 0 && *expr_end == NULL)
+ *expr_end = p;
+ }
+ }
+ }
+
+ return p;
+}
+
+/*
+ * Expands out the 'magic' {}'s in a variable/function name.
+ * Note that this can call itself recursively, to deal with
+ * constructs like foo{bar}{baz}{bam}
+ * The four pointer arguments point to "foo{expre}ss{ion}bar"
+ * "in_start" ^
+ * "expr_start" ^
+ * "expr_end" ^
+ * "in_end" ^
+ *
+ * Returns a new allocated string, which the caller must free.
+ * Returns NULL for failure.
+ */
+static char_u *make_expanded_name(char_u *in_start, char_u *expr_start, char_u *expr_end, char_u *in_end)
+{
+ char_u c1;
+ char_u *retval = NULL;
+ char_u *temp_result;
+ char_u *nextcmd = NULL;
+
+ if (expr_end == NULL || in_end == NULL)
+ return NULL;
+ *expr_start = NUL;
+ *expr_end = NUL;
+ c1 = *in_end;
+ *in_end = NUL;
+
+ temp_result = eval_to_string(expr_start + 1, &nextcmd, FALSE);
+ if (temp_result != NULL && nextcmd == NULL) {
+ retval = alloc((unsigned)(STRLEN(temp_result) + (expr_start - in_start)
+ + (in_end - expr_end) + 1));
+ if (retval != NULL) {
+ STRCPY(retval, in_start);
+ STRCAT(retval, temp_result);
+ STRCAT(retval, expr_end + 1);
+ }
+ }
+ free(temp_result);
+
+ *in_end = c1; /* put char back for error messages */
+ *expr_start = '{';
+ *expr_end = '}';
+
+ if (retval != NULL) {
+ temp_result = find_name_end(retval, &expr_start, &expr_end, 0);
+ if (expr_start != NULL) {
+ /* Further expansion! */
+ temp_result = make_expanded_name(retval, expr_start,
+ expr_end, temp_result);
+ free(retval);
+ retval = temp_result;
+ }
+ }
+
+ return retval;
+}
+
+/*
+ * Return TRUE if character "c" can be used in a variable or function name.
+ * Does not include '{' or '}' for magic braces.
+ */
+static int eval_isnamec(int c)
+{
+ return ASCII_ISALNUM(c) || c == '_' || c == ':' || c == AUTOLOAD_CHAR;
+}
+
+/*
+ * Return TRUE if character "c" can be used as the first character in a
+ * variable or function name (excluding '{' and '}').
+ */
+static int eval_isnamec1(int c)
+{
+ return ASCII_ISALPHA(c) || c == '_';
+}
+
+/*
+ * Set number v: variable to "val".
+ */
+void set_vim_var_nr(int idx, long val)
+{
+ vimvars[idx].vv_nr = val;
+}
+
+/*
+ * Get number v: variable value.
+ */
+long get_vim_var_nr(int idx)
+{
+ return vimvars[idx].vv_nr;
+}
+
+/*
+ * Get string v: variable value. Uses a static buffer, can only be used once.
+ */
+char_u *get_vim_var_str(int idx)
+{
+ return get_tv_string(&vimvars[idx].vv_tv);
+}
+
+/*
+ * Get List v: variable value. Caller must take care of reference count when
+ * needed.
+ */
+list_T *get_vim_var_list(int idx)
+{
+ return vimvars[idx].vv_list;
+}
+
+/*
+ * Set v:char to character "c".
+ */
+void set_vim_var_char(int c)
+{
+ char_u buf[MB_MAXBYTES + 1];
+
+ if (has_mbyte)
+ buf[(*mb_char2bytes)(c, buf)] = NUL;
+ else {
+ buf[0] = c;
+ buf[1] = NUL;
+ }
+ set_vim_var_string(VV_CHAR, buf, -1);
+}
+
+/*
+ * Set v:count to "count" and v:count1 to "count1".
+ * When "set_prevcount" is TRUE first set v:prevcount from v:count.
+ */
+void set_vcount(long count, long count1, int set_prevcount)
+{
+ if (set_prevcount)
+ vimvars[VV_PREVCOUNT].vv_nr = vimvars[VV_COUNT].vv_nr;
+ vimvars[VV_COUNT].vv_nr = count;
+ vimvars[VV_COUNT1].vv_nr = count1;
+}
+
+/*
+ * Set string v: variable to a copy of "val".
+ */
+void
+set_vim_var_string (
+ int idx,
+ char_u *val,
+ int len /* length of "val" to use or -1 (whole string) */
+)
+{
+ /* Need to do this (at least) once, since we can't initialize a union.
+ * Will always be invoked when "v:progname" is set. */
+ vimvars[VV_VERSION].vv_nr = VIM_VERSION_100;
+
+ free(vimvars[idx].vv_str);
+ if (val == NULL)
+ vimvars[idx].vv_str = NULL;
+ else if (len == -1)
+ vimvars[idx].vv_str = vim_strsave(val);
+ else
+ vimvars[idx].vv_str = vim_strnsave(val, len);
+}
+
+/*
+ * Set List v: variable to "val".
+ */
+void set_vim_var_list(int idx, list_T *val)
+{
+ list_unref(vimvars[idx].vv_list);
+ vimvars[idx].vv_list = val;
+ if (val != NULL)
+ ++val->lv_refcount;
+}
+
+/*
+ * Set v:register if needed.
+ */
+void set_reg_var(int c)
+{
+ char_u regname;
+
+ if (c == 0 || c == ' ')
+ regname = '"';
+ else
+ regname = c;
+ /* Avoid free/alloc when the value is already right. */
+ if (vimvars[VV_REG].vv_str == NULL || vimvars[VV_REG].vv_str[0] != c)
+ set_vim_var_string(VV_REG, &regname, 1);
+}
+
+/*
+ * Get or set v:exception. If "oldval" == NULL, return the current value.
+ * Otherwise, restore the value to "oldval" and return NULL.
+ * Must always be called in pairs to save and restore v:exception! Does not
+ * take care of memory allocations.
+ */
+char_u *v_exception(char_u *oldval)
+{
+ if (oldval == NULL)
+ return vimvars[VV_EXCEPTION].vv_str;
+
+ vimvars[VV_EXCEPTION].vv_str = oldval;
+ return NULL;
+}
+
+/*
+ * Get or set v:throwpoint. If "oldval" == NULL, return the current value.
+ * Otherwise, restore the value to "oldval" and return NULL.
+ * Must always be called in pairs to save and restore v:throwpoint! Does not
+ * take care of memory allocations.
+ */
+char_u *v_throwpoint(char_u *oldval)
+{
+ if (oldval == NULL)
+ return vimvars[VV_THROWPOINT].vv_str;
+
+ vimvars[VV_THROWPOINT].vv_str = oldval;
+ return NULL;
+}
+
+/*
+ * Set v:cmdarg.
+ * If "eap" != NULL, use "eap" to generate the value and return the old value.
+ * If "oldarg" != NULL, restore the value to "oldarg" and return NULL.
+ * Must always be called in pairs!
+ */
+char_u *set_cmdarg(exarg_T *eap, char_u *oldarg)
+{
+ char_u *oldval;
+ char_u *newval;
+ unsigned len;
+
+ oldval = vimvars[VV_CMDARG].vv_str;
+ if (eap == NULL) {
+ free(oldval);
+ vimvars[VV_CMDARG].vv_str = oldarg;
+ return NULL;
+ }
+
+ if (eap->force_bin == FORCE_BIN)
+ len = 6;
+ else if (eap->force_bin == FORCE_NOBIN)
+ len = 8;
+ else
+ len = 0;
+
+ if (eap->read_edit)
+ len += 7;
+
+ if (eap->force_ff != 0)
+ len += (unsigned)STRLEN(eap->cmd + eap->force_ff) + 6;
+ if (eap->force_enc != 0)
+ len += (unsigned)STRLEN(eap->cmd + eap->force_enc) + 7;
+ if (eap->bad_char != 0)
+ len += 7 + 4; /* " ++bad=" + "keep" or "drop" */
+
+ newval = alloc(len + 1);
+ if (newval == NULL)
+ return NULL;
+
+ if (eap->force_bin == FORCE_BIN)
+ sprintf((char *)newval, " ++bin");
+ else if (eap->force_bin == FORCE_NOBIN)
+ sprintf((char *)newval, " ++nobin");
+ else
+ *newval = NUL;
+
+ if (eap->read_edit)
+ STRCAT(newval, " ++edit");
+
+ if (eap->force_ff != 0)
+ sprintf((char *)newval + STRLEN(newval), " ++ff=%s",
+ eap->cmd + eap->force_ff);
+ if (eap->force_enc != 0)
+ sprintf((char *)newval + STRLEN(newval), " ++enc=%s",
+ eap->cmd + eap->force_enc);
+ if (eap->bad_char == BAD_KEEP)
+ STRCPY(newval + STRLEN(newval), " ++bad=keep");
+ else if (eap->bad_char == BAD_DROP)
+ STRCPY(newval + STRLEN(newval), " ++bad=drop");
+ else if (eap->bad_char != 0)
+ sprintf((char *)newval + STRLEN(newval), " ++bad=%c", eap->bad_char);
+ vimvars[VV_CMDARG].vv_str = newval;
+ return oldval;
+}
+
+/*
+ * Get the value of internal variable "name".
+ * Return OK or FAIL.
+ */
+static int
+get_var_tv (
+ char_u *name,
+ int len, /* length of "name" */
+ typval_T *rettv, /* NULL when only checking existence */
+ int verbose, /* may give error message */
+ int no_autoload /* do not use script autoloading */
+)
+{
+ int ret = OK;
+ typval_T *tv = NULL;
+ typval_T atv;
+ dictitem_T *v;
+ int cc;
+
+ /* truncate the name, so that we can use strcmp() */
+ cc = name[len];
+ name[len] = NUL;
+
+ /*
+ * Check for "b:changedtick".
+ */
+ if (STRCMP(name, "b:changedtick") == 0) {
+ atv.v_type = VAR_NUMBER;
+ atv.vval.v_number = curbuf->b_changedtick;
+ tv = &atv;
+ }
+ /*
+ * Check for user-defined variables.
+ */
+ else {
+ v = find_var(name, NULL, no_autoload);
+ if (v != NULL)
+ tv = &v->di_tv;
+ }
+
+ if (tv == NULL) {
+ if (rettv != NULL && verbose)
+ EMSG2(_(e_undefvar), name);
+ ret = FAIL;
+ } else if (rettv != NULL)
+ copy_tv(tv, rettv);
+
+ name[len] = cc;
+
+ return ret;
+}
+
+/*
+ * Handle expr[expr], expr[expr:expr] subscript and .name lookup.
+ * Also handle function call with Funcref variable: func(expr)
+ * Can all be combined: dict.func(expr)[idx]['func'](expr)
+ */
+static int
+handle_subscript (
+ char_u **arg,
+ typval_T *rettv,
+ int evaluate, /* do more than finding the end */
+ int verbose /* give error messages */
+)
+{
+ int ret = OK;
+ dict_T *selfdict = NULL;
+ char_u *s;
+ int len;
+ typval_T functv;
+
+ while (ret == OK
+ && (**arg == '['
+ || (**arg == '.' && rettv->v_type == VAR_DICT)
+ || (**arg == '(' && (!evaluate || rettv->v_type == VAR_FUNC)))
+ && !vim_iswhite(*(*arg - 1))) {
+ if (**arg == '(') {
+ /* need to copy the funcref so that we can clear rettv */
+ if (evaluate) {
+ functv = *rettv;
+ rettv->v_type = VAR_UNKNOWN;
+
+ /* Invoke the function. Recursive! */
+ s = functv.vval.v_string;
+ } else
+ s = (char_u *)"";
+ ret = get_func_tv(s, (int)STRLEN(s), rettv, arg,
+ curwin->w_cursor.lnum, curwin->w_cursor.lnum,
+ &len, evaluate, selfdict);
+
+ /* Clear the funcref afterwards, so that deleting it while
+ * evaluating the arguments is possible (see test55). */
+ if (evaluate)
+ clear_tv(&functv);
+
+ /* Stop the expression evaluation when immediately aborting on
+ * error, or when an interrupt occurred or an exception was thrown
+ * but not caught. */
+ if (aborting()) {
+ if (ret == OK)
+ clear_tv(rettv);
+ ret = FAIL;
+ }
+ dict_unref(selfdict);
+ selfdict = NULL;
+ } else { /* **arg == '[' || **arg == '.' */
+ dict_unref(selfdict);
+ if (rettv->v_type == VAR_DICT) {
+ selfdict = rettv->vval.v_dict;
+ if (selfdict != NULL)
+ ++selfdict->dv_refcount;
+ } else
+ selfdict = NULL;
+ if (eval_index(arg, rettv, evaluate, verbose) == FAIL) {
+ clear_tv(rettv);
+ ret = FAIL;
+ }
+ }
+ }
+ dict_unref(selfdict);
+ return ret;
+}
+
+/*
+ * Free the memory for a variable type-value.
+ */
+void free_tv(typval_T *varp)
+{
+ if (varp != NULL) {
+ switch (varp->v_type) {
+ case VAR_FUNC:
+ func_unref(varp->vval.v_string);
+ /*FALLTHROUGH*/
+ case VAR_STRING:
+ free(varp->vval.v_string);
+ break;
+ case VAR_LIST:
+ list_unref(varp->vval.v_list);
+ break;
+ case VAR_DICT:
+ dict_unref(varp->vval.v_dict);
+ break;
+ case VAR_NUMBER:
+ case VAR_FLOAT:
+ case VAR_UNKNOWN:
+ break;
+ default:
+ EMSG2(_(e_intern2), "free_tv()");
+ break;
+ }
+ free(varp);
+ }
+}
+
+/*
+ * Free the memory for a variable value and set the value to NULL or 0.
+ */
+void clear_tv(typval_T *varp)
+{
+ if (varp != NULL) {
+ switch (varp->v_type) {
+ case VAR_FUNC:
+ func_unref(varp->vval.v_string);
+ /*FALLTHROUGH*/
+ case VAR_STRING:
+ free(varp->vval.v_string);
+ varp->vval.v_string = NULL;
+ break;
+ case VAR_LIST:
+ list_unref(varp->vval.v_list);
+ varp->vval.v_list = NULL;
+ break;
+ case VAR_DICT:
+ dict_unref(varp->vval.v_dict);
+ varp->vval.v_dict = NULL;
+ break;
+ case VAR_NUMBER:
+ varp->vval.v_number = 0;
+ break;
+ case VAR_FLOAT:
+ varp->vval.v_float = 0.0;
+ break;
+ case VAR_UNKNOWN:
+ break;
+ default:
+ EMSG2(_(e_intern2), "clear_tv()");
+ }
+ varp->v_lock = 0;
+ }
+}
+
+/*
+ * Set the value of a variable to NULL without freeing items.
+ */
+static void init_tv(typval_T *varp)
+{
+ if (varp != NULL)
+ memset(varp, 0, sizeof(typval_T));
+}
+
+/*
+ * Get the number value of a variable.
+ * If it is a String variable, uses vim_str2nr().
+ * For incompatible types, return 0.
+ * get_tv_number_chk() is similar to get_tv_number(), but informs the
+ * caller of incompatible types: it sets *denote to TRUE if "denote"
+ * is not NULL or returns -1 otherwise.
+ */
+static long get_tv_number(typval_T *varp)
+{
+ int error = FALSE;
+
+ return get_tv_number_chk(varp, &error); /* return 0L on error */
+}
+
+long get_tv_number_chk(typval_T *varp, int *denote)
+{
+ long n = 0L;
+
+ switch (varp->v_type) {
+ case VAR_NUMBER:
+ return (long)(varp->vval.v_number);
+ case VAR_FLOAT:
+ EMSG(_("E805: Using a Float as a Number"));
+ break;
+ case VAR_FUNC:
+ EMSG(_("E703: Using a Funcref as a Number"));
+ break;
+ case VAR_STRING:
+ if (varp->vval.v_string != NULL)
+ vim_str2nr(varp->vval.v_string, NULL, NULL,
+ TRUE, TRUE, &n, NULL);
+ return n;
+ case VAR_LIST:
+ EMSG(_("E745: Using a List as a Number"));
+ break;
+ case VAR_DICT:
+ EMSG(_("E728: Using a Dictionary as a Number"));
+ break;
+ default:
+ EMSG2(_(e_intern2), "get_tv_number()");
+ break;
+ }
+ if (denote == NULL) /* useful for values that must be unsigned */
+ n = -1;
+ else
+ *denote = TRUE;
+ return n;
+}
+
+/*
+ * Get the lnum from the first argument.
+ * Also accepts ".", "$", etc., but that only works for the current buffer.
+ * Returns -1 on error.
+ */
+static linenr_T get_tv_lnum(typval_T *argvars)
+{
+ typval_T rettv;
+ linenr_T lnum;
+
+ lnum = get_tv_number_chk(&argvars[0], NULL);
+ if (lnum == 0) { /* no valid number, try using line() */
+ rettv.v_type = VAR_NUMBER;
+ f_line(argvars, &rettv);
+ lnum = rettv.vval.v_number;
+ clear_tv(&rettv);
+ }
+ return lnum;
+}
+
+/*
+ * Get the lnum from the first argument.
+ * Also accepts "$", then "buf" is used.
+ * Returns 0 on error.
+ */
+static linenr_T get_tv_lnum_buf(typval_T *argvars, buf_T *buf)
+{
+ if (argvars[0].v_type == VAR_STRING
+ && argvars[0].vval.v_string != NULL
+ && argvars[0].vval.v_string[0] == '$'
+ && buf != NULL)
+ return buf->b_ml.ml_line_count;
+ return get_tv_number_chk(&argvars[0], NULL);
+}
+
+/*
+ * Get the string value of a variable.
+ * If it is a Number variable, the number is converted into a string.
+ * get_tv_string() uses a single, static buffer. YOU CAN ONLY USE IT ONCE!
+ * get_tv_string_buf() uses a given buffer.
+ * If the String variable has never been set, return an empty string.
+ * Never returns NULL;
+ * get_tv_string_chk() and get_tv_string_buf_chk() are similar, but return
+ * NULL on error.
+ */
+static char_u *get_tv_string(typval_T *varp)
+{
+ static char_u mybuf[NUMBUFLEN];
+
+ return get_tv_string_buf(varp, mybuf);
+}
+
+static char_u *get_tv_string_buf(typval_T *varp, char_u *buf)
+{
+ char_u *res = get_tv_string_buf_chk(varp, buf);
+
+ return res != NULL ? res : (char_u *)"";
+}
+
+char_u *get_tv_string_chk(typval_T *varp)
+{
+ static char_u mybuf[NUMBUFLEN];
+
+ return get_tv_string_buf_chk(varp, mybuf);
+}
+
+static char_u *get_tv_string_buf_chk(typval_T *varp, char_u *buf)
+{
+ switch (varp->v_type) {
+ case VAR_NUMBER:
+ sprintf((char *)buf, "%" PRId64, (int64_t)varp->vval.v_number);
+ return buf;
+ case VAR_FUNC:
+ EMSG(_("E729: using Funcref as a String"));
+ break;
+ case VAR_LIST:
+ EMSG(_("E730: using List as a String"));
+ break;
+ case VAR_DICT:
+ EMSG(_("E731: using Dictionary as a String"));
+ break;
+ case VAR_FLOAT:
+ EMSG(_(e_float_as_string));
+ break;
+ case VAR_STRING:
+ if (varp->vval.v_string != NULL)
+ return varp->vval.v_string;
+ return (char_u *)"";
+ default:
+ EMSG2(_(e_intern2), "get_tv_string_buf()");
+ break;
+ }
+ return NULL;
+}
+
+/*
+ * Find variable "name" in the list of variables.
+ * Return a pointer to it if found, NULL if not found.
+ * Careful: "a:0" variables don't have a name.
+ * When "htp" is not NULL we are writing to the variable, set "htp" to the
+ * hashtab_T used.
+ */
+static dictitem_T *find_var(char_u *name, hashtab_T **htp, int no_autoload)
+{
+ char_u *varname;
+ hashtab_T *ht;
+
+ ht = find_var_ht(name, &varname);
+ if (htp != NULL)
+ *htp = ht;
+ if (ht == NULL)
+ return NULL;
+ return find_var_in_ht(ht, *name, varname, no_autoload || htp != NULL);
+}
+
+/*
+ * Find variable "varname" in hashtab "ht" with name "htname".
+ * Returns NULL if not found.
+ */
+static dictitem_T *find_var_in_ht(hashtab_T *ht, int htname, char_u *varname, int no_autoload)
+{
+ hashitem_T *hi;
+
+ if (*varname == NUL) {
+ /* Must be something like "s:", otherwise "ht" would be NULL. */
+ switch (htname) {
+ case 's': return &SCRIPT_SV(current_SID)->sv_var;
+ case 'g': return &globvars_var;
+ case 'v': return &vimvars_var;
+ case 'b': return &curbuf->b_bufvar;
+ case 'w': return &curwin->w_winvar;
+ case 't': return &curtab->tp_winvar;
+ case 'l': return current_funccal == NULL
+ ? NULL : &current_funccal->l_vars_var;
+ case 'a': return current_funccal == NULL
+ ? NULL : &current_funccal->l_avars_var;
+ }
+ return NULL;
+ }
+
+ hi = hash_find(ht, varname);
+ if (HASHITEM_EMPTY(hi)) {
+ /* For global variables we may try auto-loading the script. If it
+ * worked find the variable again. Don't auto-load a script if it was
+ * loaded already, otherwise it would be loaded every time when
+ * checking if a function name is a Funcref variable. */
+ if (ht == &globvarht && !no_autoload) {
+ /* Note: script_autoload() may make "hi" invalid. It must either
+ * be obtained again or not used. */
+ if (!script_autoload(varname, FALSE) || aborting())
+ return NULL;
+ hi = hash_find(ht, varname);
+ }
+ if (HASHITEM_EMPTY(hi))
+ return NULL;
+ }
+ return HI2DI(hi);
+}
+
+/*
+ * Find the hashtab used for a variable name.
+ * Set "varname" to the start of name without ':'.
+ */
+static hashtab_T *find_var_ht(char_u *name, char_u **varname)
+{
+ hashitem_T *hi;
+
+ if (name[1] != ':') {
+ /* The name must not start with a colon or #. */
+ if (name[0] == ':' || name[0] == AUTOLOAD_CHAR)
+ return NULL;
+ *varname = name;
+
+ /* "version" is "v:version" in all scopes */
+ hi = hash_find(&compat_hashtab, name);
+ if (!HASHITEM_EMPTY(hi))
+ return &compat_hashtab;
+
+ if (current_funccal == NULL)
+ return &globvarht; /* global variable */
+ return &current_funccal->l_vars.dv_hashtab; /* l: variable */
+ }
+ *varname = name + 2;
+ if (*name == 'g') /* global variable */
+ return &globvarht;
+ /* There must be no ':' or '#' in the rest of the name, unless g: is used
+ */
+ if (vim_strchr(name + 2, ':') != NULL
+ || vim_strchr(name + 2, AUTOLOAD_CHAR) != NULL)
+ return NULL;
+ if (*name == 'b') /* buffer variable */
+ return &curbuf->b_vars->dv_hashtab;
+ if (*name == 'w') /* window variable */
+ return &curwin->w_vars->dv_hashtab;
+ if (*name == 't') /* tab page variable */
+ return &curtab->tp_vars->dv_hashtab;
+ if (*name == 'v') /* v: variable */
+ return &vimvarht;
+ if (*name == 'a' && current_funccal != NULL) /* function argument */
+ return &current_funccal->l_avars.dv_hashtab;
+ if (*name == 'l' && current_funccal != NULL) /* local function variable */
+ return &current_funccal->l_vars.dv_hashtab;
+ if (*name == 's' /* script variable */
+ && current_SID > 0 && current_SID <= ga_scripts.ga_len)
+ return &SCRIPT_VARS(current_SID);
+ return NULL;
+}
+
+/*
+ * Get the string value of a (global/local) variable.
+ * Note: see get_tv_string() for how long the pointer remains valid.
+ * Returns NULL when it doesn't exist.
+ */
+char_u *get_var_value(char_u *name)
+{
+ dictitem_T *v;
+
+ v = find_var(name, NULL, FALSE);
+ if (v == NULL)
+ return NULL;
+ return get_tv_string(&v->di_tv);
+}
+
+/*
+ * Allocate a new hashtab for a sourced script. It will be used while
+ * sourcing this script and when executing functions defined in the script.
+ */
+void new_script_vars(scid_T id)
+{
+ int i;
+ hashtab_T *ht;
+ scriptvar_T *sv;
+
+ ga_grow(&ga_scripts, (int)(id - ga_scripts.ga_len));
+ {
+ /* Re-allocating ga_data means that an ht_array pointing to
+ * ht_smallarray becomes invalid. We can recognize this: ht_mask is
+ * at its init value. Also reset "v_dict", it's always the same. */
+ for (i = 1; i <= ga_scripts.ga_len; ++i) {
+ ht = &SCRIPT_VARS(i);
+ if (ht->ht_mask == HT_INIT_SIZE - 1)
+ ht->ht_array = ht->ht_smallarray;
+ sv = SCRIPT_SV(i);
+ sv->sv_var.di_tv.vval.v_dict = &sv->sv_dict;
+ }
+
+ while (ga_scripts.ga_len < id) {
+ sv = SCRIPT_SV(ga_scripts.ga_len + 1) = xcalloc(1, sizeof(scriptvar_T));
+ init_var_dict(&sv->sv_dict, &sv->sv_var, VAR_SCOPE);
+ ++ga_scripts.ga_len;
+ }
+ }
+}
+
+/*
+ * Initialize dictionary "dict" as a scope and set variable "dict_var" to
+ * point to it.
+ */
+void init_var_dict(dict_T *dict, dictitem_T *dict_var, int scope)
+{
+ hash_init(&dict->dv_hashtab);
+ dict->dv_lock = 0;
+ dict->dv_scope = scope;
+ dict->dv_refcount = DO_NOT_FREE_CNT;
+ dict->dv_copyID = 0;
+ dict_var->di_tv.vval.v_dict = dict;
+ dict_var->di_tv.v_type = VAR_DICT;
+ dict_var->di_tv.v_lock = VAR_FIXED;
+ dict_var->di_flags = DI_FLAGS_RO | DI_FLAGS_FIX;
+ dict_var->di_key[0] = NUL;
+}
+
+/*
+ * Unreference a dictionary initialized by init_var_dict().
+ */
+void unref_var_dict(dict_T *dict)
+{
+ /* Now the dict needs to be freed if no one else is using it, go back to
+ * normal reference counting. */
+ dict->dv_refcount -= DO_NOT_FREE_CNT - 1;
+ dict_unref(dict);
+}
+
+/*
+ * Clean up a list of internal variables.
+ * Frees all allocated variables and the value they contain.
+ * Clears hashtab "ht", does not free it.
+ */
+void vars_clear(hashtab_T *ht)
+{
+ vars_clear_ext(ht, TRUE);
+}
+
+/*
+ * Like vars_clear(), but only free the value if "free_val" is TRUE.
+ */
+static void vars_clear_ext(hashtab_T *ht, int free_val)
+{
+ int todo;
+ hashitem_T *hi;
+ dictitem_T *v;
+
+ hash_lock(ht);
+ todo = (int)ht->ht_used;
+ for (hi = ht->ht_array; todo > 0; ++hi) {
+ if (!HASHITEM_EMPTY(hi)) {
+ --todo;
+
+ /* Free the variable. Don't remove it from the hashtab,
+ * ht_array might change then. hash_clear() takes care of it
+ * later. */
+ v = HI2DI(hi);
+ if (free_val)
+ clear_tv(&v->di_tv);
+ if ((v->di_flags & DI_FLAGS_FIX) == 0)
+ free(v);
+ }
+ }
+ hash_clear(ht);
+ ht->ht_used = 0;
+}
+
+/*
+ * Delete a variable from hashtab "ht" at item "hi".
+ * Clear the variable value and free the dictitem.
+ */
+static void delete_var(hashtab_T *ht, hashitem_T *hi)
+{
+ dictitem_T *di = HI2DI(hi);
+
+ hash_remove(ht, hi);
+ clear_tv(&di->di_tv);
+ free(di);
+}
+
+/*
+ * List the value of one internal variable.
+ */
+static void list_one_var(dictitem_T *v, char_u *prefix, int *first)
+{
+ char_u *tofree;
+ char_u *s;
+ char_u numbuf[NUMBUFLEN];
+
+ current_copyID += COPYID_INC;
+ s = echo_string(&v->di_tv, &tofree, numbuf, current_copyID);
+ list_one_var_a(prefix, v->di_key, v->di_tv.v_type,
+ s == NULL ? (char_u *)"" : s, first);
+ free(tofree);
+}
+
+static void
+list_one_var_a (
+ char_u *prefix,
+ char_u *name,
+ int type,
+ char_u *string,
+ int *first /* when TRUE clear rest of screen and set to FALSE */
+)
+{
+ /* don't use msg() or msg_attr() to avoid overwriting "v:statusmsg" */
+ msg_start();
+ msg_puts(prefix);
+ if (name != NULL) /* "a:" vars don't have a name stored */
+ msg_puts(name);
+ msg_putchar(' ');
+ msg_advance(22);
+ if (type == VAR_NUMBER)
+ msg_putchar('#');
+ else if (type == VAR_FUNC)
+ msg_putchar('*');
+ else if (type == VAR_LIST) {
+ msg_putchar('[');
+ if (*string == '[')
+ ++string;
+ } else if (type == VAR_DICT) {
+ msg_putchar('{');
+ if (*string == '{')
+ ++string;
+ } else
+ msg_putchar(' ');
+
+ msg_outtrans(string);
+
+ if (type == VAR_FUNC)
+ msg_puts((char_u *)"()");
+ if (*first) {
+ msg_clr_eos();
+ *first = FALSE;
+ }
+}
+
+/*
+ * Set variable "name" to value in "tv".
+ * If the variable already exists, the value is updated.
+ * Otherwise the variable is created.
+ */
+static void
+set_var (
+ char_u *name,
+ typval_T *tv,
+ int copy /* make copy of value in "tv" */
+)
+{
+ dictitem_T *v;
+ char_u *varname;
+ hashtab_T *ht;
+
+ ht = find_var_ht(name, &varname);
+ if (ht == NULL || *varname == NUL) {
+ EMSG2(_(e_illvar), name);
+ return;
+ }
+ v = find_var_in_ht(ht, 0, varname, TRUE);
+
+ if (tv->v_type == VAR_FUNC && var_check_func_name(name, v == NULL))
+ return;
+
+ if (v != NULL) {
+ /* existing variable, need to clear the value */
+ if (var_check_ro(v->di_flags, name)
+ || tv_check_lock(v->di_tv.v_lock, name))
+ return;
+ if (v->di_tv.v_type != tv->v_type
+ && !((v->di_tv.v_type == VAR_STRING
+ || v->di_tv.v_type == VAR_NUMBER)
+ && (tv->v_type == VAR_STRING
+ || tv->v_type == VAR_NUMBER))
+ && !((v->di_tv.v_type == VAR_NUMBER
+ || v->di_tv.v_type == VAR_FLOAT)
+ && (tv->v_type == VAR_NUMBER
+ || tv->v_type == VAR_FLOAT))
+ ) {
+ EMSG2(_("E706: Variable type mismatch for: %s"), name);
+ return;
+ }
+
+ /*
+ * Handle setting internal v: variables separately: we don't change
+ * the type.
+ */
+ if (ht == &vimvarht) {
+ if (v->di_tv.v_type == VAR_STRING) {
+ free(v->di_tv.vval.v_string);
+ if (copy || tv->v_type != VAR_STRING)
+ v->di_tv.vval.v_string = vim_strsave(get_tv_string(tv));
+ else {
+ /* Take over the string to avoid an extra alloc/free. */
+ v->di_tv.vval.v_string = tv->vval.v_string;
+ tv->vval.v_string = NULL;
+ }
+ } else if (v->di_tv.v_type != VAR_NUMBER)
+ EMSG2(_(e_intern2), "set_var()");
+ else {
+ v->di_tv.vval.v_number = get_tv_number(tv);
+ if (STRCMP(varname, "searchforward") == 0)
+ set_search_direction(v->di_tv.vval.v_number ? '/' : '?');
+ else if (STRCMP(varname, "hlsearch") == 0) {
+ no_hlsearch = !v->di_tv.vval.v_number;
+ redraw_all_later(SOME_VALID);
+ }
+ }
+ return;
+ }
+
+ clear_tv(&v->di_tv);
+ } else { /* add a new variable */
+ /* Can't add "v:" variable. */
+ if (ht == &vimvarht) {
+ EMSG2(_(e_illvar), name);
+ return;
+ }
+
+ /* Make sure the variable name is valid. */
+ if (!valid_varname(varname))
+ return;
+
+ v = (dictitem_T *)alloc((unsigned)(sizeof(dictitem_T)
+ + STRLEN(varname)));
+ if (v == NULL)
+ return;
+ STRCPY(v->di_key, varname);
+ if (hash_add(ht, DI2HIKEY(v)) == FAIL) {
+ free(v);
+ return;
+ }
+ v->di_flags = 0;
+ }
+
+ if (copy || tv->v_type == VAR_NUMBER || tv->v_type == VAR_FLOAT)
+ copy_tv(tv, &v->di_tv);
+ else {
+ v->di_tv = *tv;
+ v->di_tv.v_lock = 0;
+ init_tv(tv);
+ }
+}
+
+/*
+ * Return TRUE if di_flags "flags" indicates variable "name" is read-only.
+ * Also give an error message.
+ */
+static int var_check_ro(int flags, char_u *name)
+{
+ if (flags & DI_FLAGS_RO) {
+ EMSG2(_(e_readonlyvar), name);
+ return TRUE;
+ }
+ if ((flags & DI_FLAGS_RO_SBX) && sandbox) {
+ EMSG2(_(e_readonlysbx), name);
+ return TRUE;
+ }
+ return FALSE;
+}
+
+/*
+ * Return TRUE if di_flags "flags" indicates variable "name" is fixed.
+ * Also give an error message.
+ */
+static int var_check_fixed(int flags, char_u *name)
+{
+ if (flags & DI_FLAGS_FIX) {
+ EMSG2(_("E795: Cannot delete variable %s"), name);
+ return TRUE;
+ }
+ return FALSE;
+}
+
+/*
+ * Check if a funcref is assigned to a valid variable name.
+ * Return TRUE and give an error if not.
+ */
+static int
+var_check_func_name (
+ char_u *name, /* points to start of variable name */
+ int new_var /* TRUE when creating the variable */
+)
+{
+ if (!(vim_strchr((char_u *)"wbs", name[0]) != NULL && name[1] == ':')
+ && !ASCII_ISUPPER((name[0] != NUL && name[1] == ':')
+ ? name[2] : name[0])) {
+ EMSG2(_("E704: Funcref variable name must start with a capital: %s"),
+ name);
+ return TRUE;
+ }
+ /* Don't allow hiding a function. When "v" is not NULL we might be
+ * assigning another function to the same var, the type is checked
+ * below. */
+ if (new_var && function_exists(name)) {
+ EMSG2(_("E705: Variable name conflicts with existing function: %s"),
+ name);
+ return TRUE;
+ }
+ return FALSE;
+}
+
+/*
+ * Check if a variable name is valid.
+ * Return FALSE and give an error if not.
+ */
+static int valid_varname(char_u *varname)
+{
+ char_u *p;
+
+ for (p = varname; *p != NUL; ++p)
+ if (!eval_isnamec1(*p) && (p == varname || !VIM_ISDIGIT(*p))
+ && *p != AUTOLOAD_CHAR) {
+ EMSG2(_(e_illvar), varname);
+ return FALSE;
+ }
+ return TRUE;
+}
+
+/*
+ * Return TRUE if typeval "tv" is set to be locked (immutable).
+ * Also give an error message, using "name".
+ */
+static int tv_check_lock(int lock, char_u *name)
+{
+ if (lock & VAR_LOCKED) {
+ EMSG2(_("E741: Value is locked: %s"),
+ name == NULL ? (char_u *)_("Unknown") : name);
+ return TRUE;
+ }
+ if (lock & VAR_FIXED) {
+ EMSG2(_("E742: Cannot change value of %s"),
+ name == NULL ? (char_u *)_("Unknown") : name);
+ return TRUE;
+ }
+ return FALSE;
+}
+
+/*
+ * Copy the values from typval_T "from" to typval_T "to".
+ * When needed allocates string or increases reference count.
+ * Does not make a copy of a list or dict but copies the reference!
+ * It is OK for "from" and "to" to point to the same item. This is used to
+ * make a copy later.
+ */
+void copy_tv(typval_T *from, typval_T *to)
+{
+ to->v_type = from->v_type;
+ to->v_lock = 0;
+ switch (from->v_type) {
+ case VAR_NUMBER:
+ to->vval.v_number = from->vval.v_number;
+ break;
+ case VAR_FLOAT:
+ to->vval.v_float = from->vval.v_float;
+ break;
+ case VAR_STRING:
+ case VAR_FUNC:
+ if (from->vval.v_string == NULL)
+ to->vval.v_string = NULL;
+ else {
+ to->vval.v_string = vim_strsave(from->vval.v_string);
+ if (from->v_type == VAR_FUNC)
+ func_ref(to->vval.v_string);
+ }
+ break;
+ case VAR_LIST:
+ if (from->vval.v_list == NULL)
+ to->vval.v_list = NULL;
+ else {
+ to->vval.v_list = from->vval.v_list;
+ ++to->vval.v_list->lv_refcount;
+ }
+ break;
+ case VAR_DICT:
+ if (from->vval.v_dict == NULL)
+ to->vval.v_dict = NULL;
+ else {
+ to->vval.v_dict = from->vval.v_dict;
+ ++to->vval.v_dict->dv_refcount;
+ }
+ break;
+ default:
+ EMSG2(_(e_intern2), "copy_tv()");
+ break;
+ }
+}
+
+/*
+ * Make a copy of an item.
+ * Lists and Dictionaries are also copied. A deep copy if "deep" is set.
+ * For deepcopy() "copyID" is zero for a full copy or the ID for when a
+ * reference to an already copied list/dict can be used.
+ * Returns FAIL or OK.
+ */
+static int item_copy(typval_T *from, typval_T *to, int deep, int copyID)
+{
+ static int recurse = 0;
+ int ret = OK;
+
+ if (recurse >= DICT_MAXNEST) {
+ EMSG(_("E698: variable nested too deep for making a copy"));
+ return FAIL;
+ }
+ ++recurse;
+
+ switch (from->v_type) {
+ case VAR_NUMBER:
+ case VAR_FLOAT:
+ case VAR_STRING:
+ case VAR_FUNC:
+ copy_tv(from, to);
+ break;
+ case VAR_LIST:
+ to->v_type = VAR_LIST;
+ to->v_lock = 0;
+ if (from->vval.v_list == NULL)
+ to->vval.v_list = NULL;
+ else if (copyID != 0 && from->vval.v_list->lv_copyID == copyID) {
+ /* use the copy made earlier */
+ to->vval.v_list = from->vval.v_list->lv_copylist;
+ ++to->vval.v_list->lv_refcount;
+ } else
+ to->vval.v_list = list_copy(from->vval.v_list, deep, copyID);
+ if (to->vval.v_list == NULL)
+ ret = FAIL;
+ break;
+ case VAR_DICT:
+ to->v_type = VAR_DICT;
+ to->v_lock = 0;
+ if (from->vval.v_dict == NULL)
+ to->vval.v_dict = NULL;
+ else if (copyID != 0 && from->vval.v_dict->dv_copyID == copyID) {
+ /* use the copy made earlier */
+ to->vval.v_dict = from->vval.v_dict->dv_copydict;
+ ++to->vval.v_dict->dv_refcount;
+ } else
+ to->vval.v_dict = dict_copy(from->vval.v_dict, deep, copyID);
+ if (to->vval.v_dict == NULL)
+ ret = FAIL;
+ break;
+ default:
+ EMSG2(_(e_intern2), "item_copy()");
+ ret = FAIL;
+ }
+ --recurse;
+ return ret;
+}
+
+/*
+ * ":echo expr1 ..." print each argument separated with a space, add a
+ * newline at the end.
+ * ":echon expr1 ..." print each argument plain.
+ */
+void ex_echo(exarg_T *eap)
+{
+ char_u *arg = eap->arg;
+ typval_T rettv;
+ char_u *tofree;
+ char_u *p;
+ int needclr = TRUE;
+ int atstart = TRUE;
+ char_u numbuf[NUMBUFLEN];
+
+ if (eap->skip)
+ ++emsg_skip;
+ while (*arg != NUL && *arg != '|' && *arg != '\n' && !got_int) {
+ /* If eval1() causes an error message the text from the command may
+ * still need to be cleared. E.g., "echo 22,44". */
+ need_clr_eos = needclr;
+
+ p = arg;
+ if (eval1(&arg, &rettv, !eap->skip) == FAIL) {
+ /*
+ * Report the invalid expression unless the expression evaluation
+ * has been cancelled due to an aborting error, an interrupt, or an
+ * exception.
+ */
+ if (!aborting())
+ EMSG2(_(e_invexpr2), p);
+ need_clr_eos = FALSE;
+ break;
+ }
+ need_clr_eos = FALSE;
+
+ if (!eap->skip) {
+ if (atstart) {
+ atstart = FALSE;
+ /* Call msg_start() after eval1(), evaluating the expression
+ * may cause a message to appear. */
+ if (eap->cmdidx == CMD_echo) {
+ /* Mark the saved text as finishing the line, so that what
+ * follows is displayed on a new line when scrolling back
+ * at the more prompt. */
+ msg_sb_eol();
+ msg_start();
+ }
+ } else if (eap->cmdidx == CMD_echo)
+ msg_puts_attr((char_u *)" ", echo_attr);
+ current_copyID += COPYID_INC;
+ p = echo_string(&rettv, &tofree, numbuf, current_copyID);
+ if (p != NULL)
+ for (; *p != NUL && !got_int; ++p) {
+ if (*p == '\n' || *p == '\r' || *p == TAB) {
+ if (*p != TAB && needclr) {
+ /* remove any text still there from the command */
+ msg_clr_eos();
+ needclr = FALSE;
+ }
+ msg_putchar_attr(*p, echo_attr);
+ } else {
+ if (has_mbyte) {
+ int i = (*mb_ptr2len)(p);
+
+ (void)msg_outtrans_len_attr(p, i, echo_attr);
+ p += i - 1;
+ } else
+ (void)msg_outtrans_len_attr(p, 1, echo_attr);
+ }
+ }
+ free(tofree);
+ }
+ clear_tv(&rettv);
+ arg = skipwhite(arg);
+ }
+ eap->nextcmd = check_nextcmd(arg);
+
+ if (eap->skip)
+ --emsg_skip;
+ else {
+ /* remove text that may still be there from the command */
+ if (needclr)
+ msg_clr_eos();
+ if (eap->cmdidx == CMD_echo)
+ msg_end();
+ }
+}
+
+/*
+ * ":echohl {name}".
+ */
+void ex_echohl(exarg_T *eap)
+{
+ int id;
+
+ id = syn_name2id(eap->arg);
+ if (id == 0)
+ echo_attr = 0;
+ else
+ echo_attr = syn_id2attr(id);
+}
+
+/*
+ * ":execute expr1 ..." execute the result of an expression.
+ * ":echomsg expr1 ..." Print a message
+ * ":echoerr expr1 ..." Print an error
+ * Each gets spaces around each argument and a newline at the end for
+ * echo commands
+ */
+void ex_execute(exarg_T *eap)
+{
+ char_u *arg = eap->arg;
+ typval_T rettv;
+ int ret = OK;
+ char_u *p;
+ garray_T ga;
+ int len;
+ int save_did_emsg;
+
+ ga_init(&ga, 1, 80);
+
+ if (eap->skip)
+ ++emsg_skip;
+ while (*arg != NUL && *arg != '|' && *arg != '\n') {
+ p = arg;
+ if (eval1(&arg, &rettv, !eap->skip) == FAIL) {
+ /*
+ * Report the invalid expression unless the expression evaluation
+ * has been cancelled due to an aborting error, an interrupt, or an
+ * exception.
+ */
+ if (!aborting())
+ EMSG2(_(e_invexpr2), p);
+ ret = FAIL;
+ break;
+ }
+
+ if (!eap->skip) {
+ p = get_tv_string(&rettv);
+ len = (int)STRLEN(p);
+ ga_grow(&ga, len + 2);
+ if (ga.ga_len)
+ ((char_u *)(ga.ga_data))[ga.ga_len++] = ' ';
+ STRCPY((char_u *)(ga.ga_data) + ga.ga_len, p);
+ ga.ga_len += len;
+ }
+
+ clear_tv(&rettv);
+ arg = skipwhite(arg);
+ }
+
+ if (ret != FAIL && ga.ga_data != NULL) {
+ if (eap->cmdidx == CMD_echomsg) {
+ MSG_ATTR(ga.ga_data, echo_attr);
+ out_flush();
+ } else if (eap->cmdidx == CMD_echoerr) {
+ /* We don't want to abort following commands, restore did_emsg. */
+ save_did_emsg = did_emsg;
+ EMSG((char_u *)ga.ga_data);
+ if (!force_abort)
+ did_emsg = save_did_emsg;
+ } else if (eap->cmdidx == CMD_execute)
+ do_cmdline((char_u *)ga.ga_data,
+ eap->getline, eap->cookie, DOCMD_NOWAIT|DOCMD_VERBOSE);
+ }
+
+ ga_clear(&ga);
+
+ if (eap->skip)
+ --emsg_skip;
+
+ eap->nextcmd = check_nextcmd(arg);
+}
+
+/*
+ * Skip over the name of an option: "&option", "&g:option" or "&l:option".
+ * "arg" points to the "&" or '+' when called, to "option" when returning.
+ * Returns NULL when no option name found. Otherwise pointer to the char
+ * after the option name.
+ */
+static char_u *find_option_end(char_u **arg, int *opt_flags)
+{
+ char_u *p = *arg;
+
+ ++p;
+ if (*p == 'g' && p[1] == ':') {
+ *opt_flags = OPT_GLOBAL;
+ p += 2;
+ } else if (*p == 'l' && p[1] == ':') {
+ *opt_flags = OPT_LOCAL;
+ p += 2;
+ } else
+ *opt_flags = 0;
+
+ if (!ASCII_ISALPHA(*p))
+ return NULL;
+ *arg = p;
+
+ if (p[0] == 't' && p[1] == '_' && p[2] != NUL && p[3] != NUL)
+ p += 4; /* termcap option */
+ else
+ while (ASCII_ISALPHA(*p))
+ ++p;
+ return p;
+}
+
+/*
+ * ":function"
+ */
+void ex_function(exarg_T *eap)
+{
+ char_u *theline;
+ int i;
+ int j;
+ int c;
+ int saved_did_emsg;
+ int saved_wait_return = need_wait_return;
+ char_u *name = NULL;
+ char_u *p;
+ char_u *arg;
+ char_u *line_arg = NULL;
+ garray_T newargs;
+ garray_T newlines;
+ int varargs = FALSE;
+ int mustend = FALSE;
+ int flags = 0;
+ ufunc_T *fp;
+ int indent;
+ int nesting;
+ char_u *skip_until = NULL;
+ dictitem_T *v;
+ funcdict_T fudi;
+ static int func_nr = 0; /* number for nameless function */
+ int paren;
+ hashtab_T *ht;
+ int todo;
+ hashitem_T *hi;
+ int sourcing_lnum_off;
+
+ /*
+ * ":function" without argument: list functions.
+ */
+ if (ends_excmd(*eap->arg)) {
+ if (!eap->skip) {
+ todo = (int)func_hashtab.ht_used;
+ for (hi = func_hashtab.ht_array; todo > 0 && !got_int; ++hi) {
+ if (!HASHITEM_EMPTY(hi)) {
+ --todo;
+ fp = HI2UF(hi);
+ if (!isdigit(*fp->uf_name))
+ list_func_head(fp, FALSE);
+ }
+ }
+ }
+ eap->nextcmd = check_nextcmd(eap->arg);
+ return;
+ }
+
+ /*
+ * ":function /pat": list functions matching pattern.
+ */
+ if (*eap->arg == '/') {
+ p = skip_regexp(eap->arg + 1, '/', TRUE, NULL);
+ if (!eap->skip) {
+ regmatch_T regmatch;
+
+ c = *p;
+ *p = NUL;
+ regmatch.regprog = vim_regcomp(eap->arg + 1, RE_MAGIC);
+ *p = c;
+ if (regmatch.regprog != NULL) {
+ regmatch.rm_ic = p_ic;
+
+ todo = (int)func_hashtab.ht_used;
+ for (hi = func_hashtab.ht_array; todo > 0 && !got_int; ++hi) {
+ if (!HASHITEM_EMPTY(hi)) {
+ --todo;
+ fp = HI2UF(hi);
+ if (!isdigit(*fp->uf_name)
+ && vim_regexec(&regmatch, fp->uf_name, 0))
+ list_func_head(fp, FALSE);
+ }
+ }
+ vim_regfree(regmatch.regprog);
+ }
+ }
+ if (*p == '/')
+ ++p;
+ eap->nextcmd = check_nextcmd(p);
+ return;
+ }
+
+ // Get the function name. There are these situations:
+ // func function name
+ // "name" == func, "fudi.fd_dict" == NULL
+ // dict.func new dictionary entry
+ // "name" == NULL, "fudi.fd_dict" set,
+ // "fudi.fd_di" == NULL, "fudi.fd_newkey" == func
+ // dict.func existing dict entry with a Funcref
+ // "name" == func, "fudi.fd_dict" set,
+ // "fudi.fd_di" set, "fudi.fd_newkey" == NULL
+ // dict.func existing dict entry that's not a Funcref
+ // "name" == NULL, "fudi.fd_dict" set,
+ // "fudi.fd_di" set, "fudi.fd_newkey" == NULL
+ // s:func script-local function name
+ // g:func global function name, same as "func"
+ p = eap->arg;
+ name = trans_function_name(&p, eap->skip, 0, &fudi);
+ paren = (vim_strchr(p, '(') != NULL);
+ if (name == NULL && (fudi.fd_dict == NULL || !paren) && !eap->skip) {
+ /*
+ * Return on an invalid expression in braces, unless the expression
+ * evaluation has been cancelled due to an aborting error, an
+ * interrupt, or an exception.
+ */
+ if (!aborting()) {
+ if (!eap->skip && fudi.fd_newkey != NULL)
+ EMSG2(_(e_dictkey), fudi.fd_newkey);
+ free(fudi.fd_newkey);
+ return;
+ } else
+ eap->skip = TRUE;
+ }
+
+ /* An error in a function call during evaluation of an expression in magic
+ * braces should not cause the function not to be defined. */
+ saved_did_emsg = did_emsg;
+ did_emsg = FALSE;
+
+ /*
+ * ":function func" with only function name: list function.
+ */
+ if (!paren) {
+ if (!ends_excmd(*skipwhite(p))) {
+ EMSG(_(e_trailing));
+ goto ret_free;
+ }
+ eap->nextcmd = check_nextcmd(p);
+ if (eap->nextcmd != NULL)
+ *p = NUL;
+ if (!eap->skip && !got_int) {
+ fp = find_func(name);
+ if (fp != NULL) {
+ list_func_head(fp, TRUE);
+ for (j = 0; j < fp->uf_lines.ga_len && !got_int; ++j) {
+ if (FUNCLINE(fp, j) == NULL)
+ continue;
+ msg_putchar('\n');
+ msg_outnum((long)(j + 1));
+ if (j < 9)
+ msg_putchar(' ');
+ if (j < 99)
+ msg_putchar(' ');
+ msg_prt_line(FUNCLINE(fp, j), FALSE);
+ out_flush(); /* show a line at a time */
+ ui_breakcheck();
+ }
+ if (!got_int) {
+ msg_putchar('\n');
+ msg_puts((char_u *)" endfunction");
+ }
+ } else
+ emsg_funcname(N_("E123: Undefined function: %s"), name);
+ }
+ goto ret_free;
+ }
+
+ /*
+ * ":function name(arg1, arg2)" Define function.
+ */
+ p = skipwhite(p);
+ if (*p != '(') {
+ if (!eap->skip) {
+ EMSG2(_("E124: Missing '(': %s"), eap->arg);
+ goto ret_free;
+ }
+ /* attempt to continue by skipping some text */
+ if (vim_strchr(p, '(') != NULL)
+ p = vim_strchr(p, '(');
+ }
+ p = skipwhite(p + 1);
+
+ ga_init(&newargs, (int)sizeof(char_u *), 3);
+ ga_init(&newlines, (int)sizeof(char_u *), 3);
+
+ if (!eap->skip) {
+ /* Check the name of the function. Unless it's a dictionary function
+ * (that we are overwriting). */
+ if (name != NULL)
+ arg = name;
+ else
+ arg = fudi.fd_newkey;
+ if (arg != NULL && (fudi.fd_di == NULL
+ || fudi.fd_di->di_tv.v_type != VAR_FUNC)) {
+ if (*arg == K_SPECIAL)
+ j = 3;
+ else
+ j = 0;
+ while (arg[j] != NUL && (j == 0 ? eval_isnamec1(arg[j])
+ : eval_isnamec(arg[j])))
+ ++j;
+ if (arg[j] != NUL)
+ emsg_funcname((char *)e_invarg2, arg);
+ }
+ /* Disallow using the g: dict. */
+ if (fudi.fd_dict != NULL && fudi.fd_dict->dv_scope == VAR_DEF_SCOPE)
+ EMSG(_("E862: Cannot use g: here"));
+ }
+
+ /*
+ * Isolate the arguments: "arg1, arg2, ...)"
+ */
+ while (*p != ')') {
+ if (p[0] == '.' && p[1] == '.' && p[2] == '.') {
+ varargs = TRUE;
+ p += 3;
+ mustend = TRUE;
+ } else {
+ arg = p;
+ while (ASCII_ISALNUM(*p) || *p == '_')
+ ++p;
+ if (arg == p || isdigit(*arg)
+ || (p - arg == 9 && STRNCMP(arg, "firstline", 9) == 0)
+ || (p - arg == 8 && STRNCMP(arg, "lastline", 8) == 0)) {
+ if (!eap->skip)
+ EMSG2(_("E125: Illegal argument: %s"), arg);
+ break;
+ }
+ ga_grow(&newargs, 1);
+ c = *p;
+ *p = NUL;
+ arg = vim_strsave(arg);
+ if (arg == NULL)
+ goto erret;
+
+ /* Check for duplicate argument name. */
+ for (i = 0; i < newargs.ga_len; ++i)
+ if (STRCMP(((char_u **)(newargs.ga_data))[i], arg) == 0) {
+ EMSG2(_("E853: Duplicate argument name: %s"), arg);
+ free(arg);
+ goto erret;
+ }
+
+ ((char_u **)(newargs.ga_data))[newargs.ga_len] = arg;
+ *p = c;
+ newargs.ga_len++;
+ if (*p == ',')
+ ++p;
+ else
+ mustend = TRUE;
+ }
+ p = skipwhite(p);
+ if (mustend && *p != ')') {
+ if (!eap->skip)
+ EMSG2(_(e_invarg2), eap->arg);
+ break;
+ }
+ }
+ ++p; /* skip the ')' */
+
+ /* find extra arguments "range", "dict" and "abort" */
+ for (;; ) {
+ p = skipwhite(p);
+ if (STRNCMP(p, "range", 5) == 0) {
+ flags |= FC_RANGE;
+ p += 5;
+ } else if (STRNCMP(p, "dict", 4) == 0) {
+ flags |= FC_DICT;
+ p += 4;
+ } else if (STRNCMP(p, "abort", 5) == 0) {
+ flags |= FC_ABORT;
+ p += 5;
+ } else
+ break;
+ }
+
+ /* When there is a line break use what follows for the function body.
+ * Makes 'exe "func Test()\n...\nendfunc"' work. */
+ if (*p == '\n')
+ line_arg = p + 1;
+ else if (*p != NUL && *p != '"' && !eap->skip && !did_emsg)
+ EMSG(_(e_trailing));
+
+ /*
+ * Read the body of the function, until ":endfunction" is found.
+ */
+ if (KeyTyped) {
+ /* Check if the function already exists, don't let the user type the
+ * whole function before telling him it doesn't work! For a script we
+ * need to skip the body to be able to find what follows. */
+ if (!eap->skip && !eap->forceit) {
+ if (fudi.fd_dict != NULL && fudi.fd_newkey == NULL)
+ EMSG(_(e_funcdict));
+ else if (name != NULL && find_func(name) != NULL)
+ emsg_funcname(e_funcexts, name);
+ }
+
+ if (!eap->skip && did_emsg)
+ goto erret;
+
+ msg_putchar('\n'); /* don't overwrite the function name */
+ cmdline_row = msg_row;
+ }
+
+ indent = 2;
+ nesting = 0;
+ for (;; ) {
+ if (KeyTyped) {
+ msg_scroll = TRUE;
+ saved_wait_return = FALSE;
+ }
+ need_wait_return = FALSE;
+ sourcing_lnum_off = sourcing_lnum;
+
+ if (line_arg != NULL) {
+ /* Use eap->arg, split up in parts by line breaks. */
+ theline = line_arg;
+ p = vim_strchr(theline, '\n');
+ if (p == NULL)
+ line_arg += STRLEN(line_arg);
+ else {
+ *p = NUL;
+ line_arg = p + 1;
+ }
+ } else if (eap->getline == NULL)
+ theline = getcmdline(':', 0L, indent);
+ else
+ theline = eap->getline(':', eap->cookie, indent);
+ if (KeyTyped)
+ lines_left = Rows - 1;
+ if (theline == NULL) {
+ EMSG(_("E126: Missing :endfunction"));
+ goto erret;
+ }
+
+ /* Detect line continuation: sourcing_lnum increased more than one. */
+ if (sourcing_lnum > sourcing_lnum_off + 1)
+ sourcing_lnum_off = sourcing_lnum - sourcing_lnum_off - 1;
+ else
+ sourcing_lnum_off = 0;
+
+ if (skip_until != NULL) {
+ /* between ":append" and "." and between ":python <<EOF" and "EOF"
+ * don't check for ":endfunc". */
+ if (STRCMP(theline, skip_until) == 0) {
+ free(skip_until);
+ skip_until = NULL;
+ }
+ } else {
+ /* skip ':' and blanks*/
+ for (p = theline; vim_iswhite(*p) || *p == ':'; ++p)
+ ;
+
+ /* Check for "endfunction". */
+ if (checkforcmd(&p, "endfunction", 4) && nesting-- == 0) {
+ if (line_arg == NULL)
+ free(theline);
+ break;
+ }
+
+ /* Increase indent inside "if", "while", "for" and "try", decrease
+ * at "end". */
+ if (indent > 2 && STRNCMP(p, "end", 3) == 0)
+ indent -= 2;
+ else if (STRNCMP(p, "if", 2) == 0
+ || STRNCMP(p, "wh", 2) == 0
+ || STRNCMP(p, "for", 3) == 0
+ || STRNCMP(p, "try", 3) == 0)
+ indent += 2;
+
+ /* Check for defining a function inside this function. */
+ if (checkforcmd(&p, "function", 2)) {
+ if (*p == '!')
+ p = skipwhite(p + 1);
+ p += eval_fname_script(p);
+ if (ASCII_ISALPHA(*p)) {
+ free(trans_function_name(&p, TRUE, 0, NULL));
+ if (*skipwhite(p) == '(') {
+ ++nesting;
+ indent += 2;
+ }
+ }
+ }
+
+ /* Check for ":append" or ":insert". */
+ p = skip_range(p, NULL);
+ if ((p[0] == 'a' && (!ASCII_ISALPHA(p[1]) || p[1] == 'p'))
+ || (p[0] == 'i'
+ && (!ASCII_ISALPHA(p[1]) || (p[1] == 'n'
+ && (!ASCII_ISALPHA(p[2]) ||
+ (p[2] == 's'))))))
+ skip_until = vim_strsave((char_u *)".");
+
+ /* Check for ":python <<EOF", ":tcl <<EOF", etc. */
+ arg = skipwhite(skiptowhite(p));
+ if (arg[0] == '<' && arg[1] =='<'
+ && ((p[0] == 'p' && p[1] == 'y'
+ && (!ASCII_ISALPHA(p[2]) || p[2] == 't'))
+ || (p[0] == 'p' && p[1] == 'e'
+ && (!ASCII_ISALPHA(p[2]) || p[2] == 'r'))
+ || (p[0] == 't' && p[1] == 'c'
+ && (!ASCII_ISALPHA(p[2]) || p[2] == 'l'))
+ || (p[0] == 'l' && p[1] == 'u' && p[2] == 'a'
+ && !ASCII_ISALPHA(p[3]))
+ || (p[0] == 'r' && p[1] == 'u' && p[2] == 'b'
+ && (!ASCII_ISALPHA(p[3]) || p[3] == 'y'))
+ || (p[0] == 'm' && p[1] == 'z'
+ && (!ASCII_ISALPHA(p[2]) || p[2] == 's'))
+ )) {
+ /* ":python <<" continues until a dot, like ":append" */
+ p = skipwhite(arg + 2);
+ if (*p == NUL)
+ skip_until = vim_strsave((char_u *)".");
+ else
+ skip_until = vim_strsave(p);
+ }
+ }
+
+ /* Add the line to the function. */
+ ga_grow(&newlines, 1 + sourcing_lnum_off);
+
+ /* Copy the line to newly allocated memory. get_one_sourceline()
+ * allocates 250 bytes per line, this saves 80% on average. The cost
+ * is an extra alloc/free. */
+ p = vim_strsave(theline);
+ if (p != NULL) {
+ if (line_arg == NULL)
+ free(theline);
+ theline = p;
+ }
+
+ ((char_u **)(newlines.ga_data))[newlines.ga_len++] = theline;
+
+ /* Add NULL lines for continuation lines, so that the line count is
+ * equal to the index in the growarray. */
+ while (sourcing_lnum_off-- > 0)
+ ((char_u **)(newlines.ga_data))[newlines.ga_len++] = NULL;
+
+ /* Check for end of eap->arg. */
+ if (line_arg != NULL && *line_arg == NUL)
+ line_arg = NULL;
+ }
+
+ /* Don't define the function when skipping commands or when an error was
+ * detected. */
+ if (eap->skip || did_emsg)
+ goto erret;
+
+ /*
+ * If there are no errors, add the function
+ */
+ if (fudi.fd_dict == NULL) {
+ v = find_var(name, &ht, FALSE);
+ if (v != NULL && v->di_tv.v_type == VAR_FUNC) {
+ emsg_funcname(N_("E707: Function name conflicts with variable: %s"),
+ name);
+ goto erret;
+ }
+
+ fp = find_func(name);
+ if (fp != NULL) {
+ if (!eap->forceit) {
+ emsg_funcname(e_funcexts, name);
+ goto erret;
+ }
+ if (fp->uf_calls > 0) {
+ emsg_funcname(N_("E127: Cannot redefine function %s: It is in use"),
+ name);
+ goto erret;
+ }
+ /* redefine existing function */
+ ga_clear_strings(&(fp->uf_args));
+ ga_clear_strings(&(fp->uf_lines));
+ free(name);
+ name = NULL;
+ }
+ } else {
+ char numbuf[20];
+
+ fp = NULL;
+ if (fudi.fd_newkey == NULL && !eap->forceit) {
+ EMSG(_(e_funcdict));
+ goto erret;
+ }
+ if (fudi.fd_di == NULL) {
+ /* Can't add a function to a locked dictionary */
+ if (tv_check_lock(fudi.fd_dict->dv_lock, eap->arg))
+ goto erret;
+ }
+ /* Can't change an existing function if it is locked */
+ else if (tv_check_lock(fudi.fd_di->di_tv.v_lock, eap->arg))
+ goto erret;
+
+ /* Give the function a sequential number. Can only be used with a
+ * Funcref! */
+ free(name);
+ sprintf(numbuf, "%d", ++func_nr);
+ name = vim_strsave((char_u *)numbuf);
+ if (name == NULL)
+ goto erret;
+ }
+
+ if (fp == NULL) {
+ if (fudi.fd_dict == NULL && vim_strchr(name, AUTOLOAD_CHAR) != NULL) {
+ int slen, plen;
+ char_u *scriptname;
+
+ /* Check that the autoload name matches the script name. */
+ j = FAIL;
+ if (sourcing_name != NULL) {
+ scriptname = autoload_name(name);
+ if (scriptname != NULL) {
+ p = vim_strchr(scriptname, '/');
+ plen = (int)STRLEN(p);
+ slen = (int)STRLEN(sourcing_name);
+ if (slen > plen && fnamecmp(p,
+ sourcing_name + slen - plen) == 0)
+ j = OK;
+ free(scriptname);
+ }
+ }
+ if (j == FAIL) {
+ EMSG2(_(
+ "E746: Function name does not match script file name: %s"),
+ name);
+ goto erret;
+ }
+ }
+
+ fp = (ufunc_T *)alloc((unsigned)(sizeof(ufunc_T) + STRLEN(name)));
+ if (fp == NULL)
+ goto erret;
+
+ if (fudi.fd_dict != NULL) {
+ if (fudi.fd_di == NULL) {
+ /* add new dict entry */
+ fudi.fd_di = dictitem_alloc(fudi.fd_newkey);
+ if (fudi.fd_di == NULL) {
+ free(fp);
+ goto erret;
+ }
+ if (dict_add(fudi.fd_dict, fudi.fd_di) == FAIL) {
+ free(fudi.fd_di);
+ free(fp);
+ goto erret;
+ }
+ } else
+ /* overwrite existing dict entry */
+ clear_tv(&fudi.fd_di->di_tv);
+ fudi.fd_di->di_tv.v_type = VAR_FUNC;
+ fudi.fd_di->di_tv.v_lock = 0;
+ fudi.fd_di->di_tv.vval.v_string = vim_strsave(name);
+ fp->uf_refcount = 1;
+
+ /* behave like "dict" was used */
+ flags |= FC_DICT;
+ }
+
+ /* insert the new function in the function list */
+ STRCPY(fp->uf_name, name);
+ hash_add(&func_hashtab, UF2HIKEY(fp));
+ }
+ fp->uf_args = newargs;
+ fp->uf_lines = newlines;
+ fp->uf_tml_count = NULL;
+ fp->uf_tml_total = NULL;
+ fp->uf_tml_self = NULL;
+ fp->uf_profiling = FALSE;
+ if (prof_def_func())
+ func_do_profile(fp);
+ fp->uf_varargs = varargs;
+ fp->uf_flags = flags;
+ fp->uf_calls = 0;
+ fp->uf_script_ID = current_SID;
+ goto ret_free;
+
+erret:
+ ga_clear_strings(&newargs);
+ ga_clear_strings(&newlines);
+ret_free:
+ free(skip_until);
+ free(fudi.fd_newkey);
+ free(name);
+ did_emsg |= saved_did_emsg;
+ need_wait_return |= saved_wait_return;
+}
+
+/*
+ * Get a function name, translating "<SID>" and "<SNR>".
+ * Also handles a Funcref in a List or Dictionary.
+ * Returns the function name in allocated memory, or NULL for failure.
+ * flags:
+ * TFN_INT: internal function name OK
+ * TFN_QUIET: be quiet
+ * TFN_NO_AUTOLOAD: do not use script autoloading
+ * Advances "pp" to just after the function name (if no error).
+ */
+static char_u *
+trans_function_name (
+ char_u **pp,
+ int skip, /* only find the end, don't evaluate */
+ int flags,
+ funcdict_T *fdp /* return: info about dictionary used */
+)
+{
+ char_u *name = NULL;
+ char_u *start;
+ char_u *end;
+ int lead;
+ char_u sid_buf[20];
+ int len;
+ lval_T lv;
+
+ if (fdp != NULL)
+ memset(fdp, 0, sizeof(funcdict_T));
+ start = *pp;
+
+ /* Check for hard coded <SNR>: already translated function ID (from a user
+ * command). */
+ if ((*pp)[0] == K_SPECIAL && (*pp)[1] == KS_EXTRA
+ && (*pp)[2] == (int)KE_SNR) {
+ *pp += 3;
+ len = get_id_len(pp) + 3;
+ return vim_strnsave(start, len);
+ }
+
+ /* A name starting with "<SID>" or "<SNR>" is local to a script. But
+ * don't skip over "s:", get_lval() needs it for "s:dict.func". */
+ lead = eval_fname_script(start);
+ if (lead > 2)
+ start += lead;
+
+ /* Note that TFN_ flags use the same values as GLV_ flags. */
+ end = get_lval(start, NULL, &lv, FALSE, skip, flags,
+ lead > 2 ? 0 : FNE_CHECK_START);
+ if (end == start) {
+ if (!skip)
+ EMSG(_("E129: Function name required"));
+ goto theend;
+ }
+ if (end == NULL || (lv.ll_tv != NULL && (lead > 2 || lv.ll_range))) {
+ /*
+ * Report an invalid expression in braces, unless the expression
+ * evaluation has been cancelled due to an aborting error, an
+ * interrupt, or an exception.
+ */
+ if (!aborting()) {
+ if (end != NULL)
+ EMSG2(_(e_invarg2), start);
+ } else
+ *pp = find_name_end(start, NULL, NULL, FNE_INCL_BR);
+ goto theend;
+ }
+
+ if (lv.ll_tv != NULL) {
+ if (fdp != NULL) {
+ fdp->fd_dict = lv.ll_dict;
+ fdp->fd_newkey = lv.ll_newkey;
+ lv.ll_newkey = NULL;
+ fdp->fd_di = lv.ll_di;
+ }
+ if (lv.ll_tv->v_type == VAR_FUNC && lv.ll_tv->vval.v_string != NULL) {
+ name = vim_strsave(lv.ll_tv->vval.v_string);
+ *pp = end;
+ } else {
+ if (!skip && !(flags & TFN_QUIET) && (fdp == NULL
+ || lv.ll_dict == NULL ||
+ fdp->fd_newkey == NULL))
+ EMSG(_(e_funcref));
+ else
+ *pp = end;
+ name = NULL;
+ }
+ goto theend;
+ }
+
+ if (lv.ll_name == NULL) {
+ /* Error found, but continue after the function name. */
+ *pp = end;
+ goto theend;
+ }
+
+ /* Check if the name is a Funcref. If so, use the value. */
+ if (lv.ll_exp_name != NULL) {
+ len = (int)STRLEN(lv.ll_exp_name);
+ name = deref_func_name(lv.ll_exp_name, &len, flags & TFN_NO_AUTOLOAD);
+ if (name == lv.ll_exp_name)
+ name = NULL;
+ } else {
+ len = (int)(end - *pp);
+ name = deref_func_name(*pp, &len, flags & TFN_NO_AUTOLOAD);
+ if (name == *pp)
+ name = NULL;
+ }
+ if (name != NULL) {
+ name = vim_strsave(name);
+ *pp = end;
+ if (strncmp((char *)name, "<SNR>", 5) == 0) {
+ // Change "<SNR>" to the byte sequence.
+ name[0] = K_SPECIAL;
+ name[1] = KS_EXTRA;
+ name[2] = (int)KE_SNR;
+ memmove(name + 3, name + 5, strlen((char *)name + 5) + 1);
+ }
+ goto theend;
+ }
+
+ if (lv.ll_exp_name != NULL) {
+ len = (int)STRLEN(lv.ll_exp_name);
+ if (lead <= 2 && lv.ll_name == lv.ll_exp_name
+ && STRNCMP(lv.ll_name, "s:", 2) == 0) {
+ /* When there was "s:" already or the name expanded to get a
+ * leading "s:" then remove it. */
+ lv.ll_name += 2;
+ len -= 2;
+ lead = 2;
+ }
+ } else {
+ // Skip over "s:" and "g:".
+ if (lead == 2 || (lv.ll_name[0] == 'g' && lv.ll_name[1] == ':')) {
+ lv.ll_name += 2;
+ }
+ len = (int)(end - lv.ll_name);
+ }
+
+ /*
+ * Copy the function name to allocated memory.
+ * Accept <SID>name() inside a script, translate into <SNR>123_name().
+ * Accept <SNR>123_name() outside a script.
+ */
+ if (skip)
+ lead = 0; /* do nothing */
+ else if (lead > 0) {
+ lead = 3;
+ if ((lv.ll_exp_name != NULL && eval_fname_sid(lv.ll_exp_name))
+ || eval_fname_sid(*pp)) {
+ /* It's "s:" or "<SID>" */
+ if (current_SID <= 0) {
+ EMSG(_(e_usingsid));
+ goto theend;
+ }
+ sprintf((char *)sid_buf, "%" PRId64 "_", (int64_t)current_SID);
+ lead += (int)STRLEN(sid_buf);
+ }
+ } else if (!(flags & TFN_INT) && builtin_function(lv.ll_name, len)) {
+ EMSG2(_("E128: Function name must start with a capital or \"s:\": %s"),
+ start);
+ goto theend;
+ }
+
+ if (!skip && !(flags & TFN_QUIET)) {
+ char_u *cp = vim_strchr(lv.ll_name, ':');
+
+ if (cp != NULL && cp < end) {
+ EMSG2(_("E884: Function name cannot contain a colon: %s"), start);
+ goto theend;
+ }
+ }
+
+ name = alloc((unsigned)(len + lead + 1));
+ if (name != NULL) {
+ if (lead > 0) {
+ name[0] = K_SPECIAL;
+ name[1] = KS_EXTRA;
+ name[2] = (int)KE_SNR;
+ if (lead > 3) /* If it's "<SID>" */
+ STRCPY(name + 3, sid_buf);
+ }
+ memmove(name + lead, lv.ll_name, (size_t)len);
+ name[lead + len] = NUL;
+ }
+ *pp = end;
+
+theend:
+ clear_lval(&lv);
+ return name;
+}
+
+/*
+ * Return 5 if "p" starts with "<SID>" or "<SNR>" (ignoring case).
+ * Return 2 if "p" starts with "s:".
+ * Return 0 otherwise.
+ */
+static int eval_fname_script(char_u *p)
+{
+ if (p[0] == '<' && (STRNICMP(p + 1, "SID>", 4) == 0
+ || STRNICMP(p + 1, "SNR>", 4) == 0))
+ return 5;
+ if (p[0] == 's' && p[1] == ':')
+ return 2;
+ return 0;
+}
+
+/*
+ * Return TRUE if "p" starts with "<SID>" or "s:".
+ * Only works if eval_fname_script() returned non-zero for "p"!
+ */
+static int eval_fname_sid(char_u *p)
+{
+ return *p == 's' || TOUPPER_ASC(p[2]) == 'I';
+}
+
+/*
+ * List the head of the function: "name(arg1, arg2)".
+ */
+static void list_func_head(ufunc_T *fp, int indent)
+{
+ int j;
+
+ msg_start();
+ if (indent)
+ MSG_PUTS(" ");
+ MSG_PUTS("function ");
+ if (fp->uf_name[0] == K_SPECIAL) {
+ MSG_PUTS_ATTR("<SNR>", hl_attr(HLF_8));
+ msg_puts(fp->uf_name + 3);
+ } else
+ msg_puts(fp->uf_name);
+ msg_putchar('(');
+ for (j = 0; j < fp->uf_args.ga_len; ++j) {
+ if (j)
+ MSG_PUTS(", ");
+ msg_puts(FUNCARG(fp, j));
+ }
+ if (fp->uf_varargs) {
+ if (j)
+ MSG_PUTS(", ");
+ MSG_PUTS("...");
+ }
+ msg_putchar(')');
+ if (fp->uf_flags & FC_ABORT)
+ MSG_PUTS(" abort");
+ if (fp->uf_flags & FC_RANGE)
+ MSG_PUTS(" range");
+ if (fp->uf_flags & FC_DICT)
+ MSG_PUTS(" dict");
+ msg_clr_eos();
+ if (p_verbose > 0)
+ last_set_msg(fp->uf_script_ID);
+}
+
+/*
+ * Find a function by name, return pointer to it in ufuncs.
+ * Return NULL for unknown function.
+ */
+static ufunc_T *find_func(char_u *name)
+{
+ hashitem_T *hi;
+
+ hi = hash_find(&func_hashtab, name);
+ if (!HASHITEM_EMPTY(hi))
+ return HI2UF(hi);
+ return NULL;
+}
+
+#if defined(EXITFREE) || defined(PROTO)
+void free_all_functions(void)
+{
+ hashitem_T *hi;
+
+ /* Need to start all over every time, because func_free() may change the
+ * hash table. */
+ while (func_hashtab.ht_used > 0)
+ for (hi = func_hashtab.ht_array;; ++hi)
+ if (!HASHITEM_EMPTY(hi)) {
+ func_free(HI2UF(hi));
+ break;
+ }
+}
+
+#endif
+
+int translated_function_exists(char_u *name)
+{
+ if (builtin_function(name, -1)) {
+ return find_internal_func(name) >= 0;
+ }
+ return find_func(name) != NULL;
+}
+
+/*
+ * Return TRUE if a function "name" exists.
+ */
+static int function_exists(char_u *name)
+{
+ char_u *nm = name;
+ char_u *p;
+ int n = FALSE;
+
+ p = trans_function_name(&nm, FALSE, TFN_INT|TFN_QUIET|TFN_NO_AUTOLOAD,
+ NULL);
+ nm = skipwhite(nm);
+
+ /* Only accept "funcname", "funcname ", "funcname (..." and
+ * "funcname(...", not "funcname!...". */
+ if (p != NULL && (*nm == NUL || *nm == '('))
+ n = translated_function_exists(p);
+ free(p);
+ return n;
+}
+
+char_u *get_expanded_name(char_u *name, int check)
+{
+ char_u *nm = name;
+ char_u *p;
+
+ p = trans_function_name(&nm, FALSE, TFN_INT|TFN_QUIET, NULL);
+
+ if (p != NULL && *nm == NUL)
+ if (!check || translated_function_exists(p))
+ return p;
+
+ free(p);
+ return NULL;
+}
+
+/// Return TRUE if "name" looks like a builtin function name: starts with a
+/// lower case letter and doesn't contain AUTOLOAD_CHAR.
+/// "len" is the length of "name", or -1 for NUL terminated.
+static bool builtin_function(char_u *name, int len)
+{
+ if (!ASCII_ISLOWER(name[0])) {
+ return FALSE;
+ }
+
+ char_u *p = vim_strchr(name, AUTOLOAD_CHAR);
+
+ return p == NULL
+ || (len > 0 && p > name + len);
+}
+
+/*
+ * Start profiling function "fp".
+ */
+static void func_do_profile(ufunc_T *fp)
+{
+ int len = fp->uf_lines.ga_len;
+
+ if (len == 0)
+ len = 1; /* avoid getting error for allocating zero bytes */
+ fp->uf_tm_count = 0;
+ profile_zero(&fp->uf_tm_self);
+ profile_zero(&fp->uf_tm_total);
+
+ if (fp->uf_tml_count == NULL) {
+ fp->uf_tml_count = xcalloc(len, sizeof(int));
+ }
+
+ if (fp->uf_tml_total == NULL) {
+ fp->uf_tml_total = xcalloc(len, sizeof(proftime_T));
+ }
+
+ if (fp->uf_tml_self == NULL) {
+ fp->uf_tml_self = xcalloc(len, sizeof(proftime_T));
+ }
+
+ fp->uf_tml_idx = -1;
+ if (fp->uf_tml_count == NULL || fp->uf_tml_total == NULL
+ || fp->uf_tml_self == NULL)
+ return; /* out of memory */
+
+ fp->uf_profiling = TRUE;
+}
+
+/*
+ * Dump the profiling results for all functions in file "fd".
+ */
+void func_dump_profile(FILE *fd)
+{
+ hashitem_T *hi;
+ int todo;
+ ufunc_T *fp;
+ int i;
+ ufunc_T **sorttab;
+ int st_len = 0;
+
+ todo = (int)func_hashtab.ht_used;
+ if (todo == 0)
+ return; /* nothing to dump */
+
+ sorttab = (ufunc_T **)alloc((unsigned)(sizeof(ufunc_T) * todo));
+
+ for (hi = func_hashtab.ht_array; todo > 0; ++hi) {
+ if (!HASHITEM_EMPTY(hi)) {
+ --todo;
+ fp = HI2UF(hi);
+ if (fp->uf_profiling) {
+ if (sorttab != NULL)
+ sorttab[st_len++] = fp;
+
+ if (fp->uf_name[0] == K_SPECIAL)
+ fprintf(fd, "FUNCTION <SNR>%s()\n", fp->uf_name + 3);
+ else
+ fprintf(fd, "FUNCTION %s()\n", fp->uf_name);
+ if (fp->uf_tm_count == 1)
+ fprintf(fd, "Called 1 time\n");
+ else
+ fprintf(fd, "Called %d times\n", fp->uf_tm_count);
+ fprintf(fd, "Total time: %s\n", profile_msg(&fp->uf_tm_total));
+ fprintf(fd, " Self time: %s\n", profile_msg(&fp->uf_tm_self));
+ fprintf(fd, "\n");
+ fprintf(fd, "count total (s) self (s)\n");
+
+ for (i = 0; i < fp->uf_lines.ga_len; ++i) {
+ if (FUNCLINE(fp, i) == NULL)
+ continue;
+ prof_func_line(fd, fp->uf_tml_count[i],
+ &fp->uf_tml_total[i], &fp->uf_tml_self[i], TRUE);
+ fprintf(fd, "%s\n", FUNCLINE(fp, i));
+ }
+ fprintf(fd, "\n");
+ }
+ }
+ }
+
+ if (sorttab != NULL && st_len > 0) {
+ qsort((void *)sorttab, (size_t)st_len, sizeof(ufunc_T *),
+ prof_total_cmp);
+ prof_sort_list(fd, sorttab, st_len, "TOTAL", FALSE);
+ qsort((void *)sorttab, (size_t)st_len, sizeof(ufunc_T *),
+ prof_self_cmp);
+ prof_sort_list(fd, sorttab, st_len, "SELF", TRUE);
+ }
+
+ free(sorttab);
+}
+
+static void
+prof_sort_list (
+ FILE *fd,
+ ufunc_T **sorttab,
+ int st_len,
+ char *title,
+ int prefer_self /* when equal print only self time */
+)
+{
+ int i;
+ ufunc_T *fp;
+
+ fprintf(fd, "FUNCTIONS SORTED ON %s TIME\n", title);
+ fprintf(fd, "count total (s) self (s) function\n");
+ for (i = 0; i < 20 && i < st_len; ++i) {
+ fp = sorttab[i];
+ prof_func_line(fd, fp->uf_tm_count, &fp->uf_tm_total, &fp->uf_tm_self,
+ prefer_self);
+ if (fp->uf_name[0] == K_SPECIAL)
+ fprintf(fd, " <SNR>%s()\n", fp->uf_name + 3);
+ else
+ fprintf(fd, " %s()\n", fp->uf_name);
+ }
+ fprintf(fd, "\n");
+}
+
+/*
+ * Print the count and times for one function or function line.
+ */
+static void prof_func_line(fd, count, total, self, prefer_self)
+FILE *fd;
+int count;
+proftime_T *total;
+proftime_T *self;
+int prefer_self; /* when equal print only self time */
+{
+ if (count > 0) {
+ fprintf(fd, "%5d ", count);
+ if (prefer_self && profile_equal(total, self))
+ fprintf(fd, " ");
+ else
+ fprintf(fd, "%s ", profile_msg(total));
+ if (!prefer_self && profile_equal(total, self))
+ fprintf(fd, " ");
+ else
+ fprintf(fd, "%s ", profile_msg(self));
+ } else
+ fprintf(fd, " ");
+}
+
+/*
+ * Compare function for total time sorting.
+ */
+static int prof_total_cmp(const void *s1, const void *s2)
+{
+ ufunc_T *p1, *p2;
+
+ p1 = *(ufunc_T **)s1;
+ p2 = *(ufunc_T **)s2;
+ return profile_cmp(&p1->uf_tm_total, &p2->uf_tm_total);
+}
+
+/*
+ * Compare function for self time sorting.
+ */
+static int prof_self_cmp(const void *s1, const void *s2)
+{
+ ufunc_T *p1, *p2;
+
+ p1 = *(ufunc_T **)s1;
+ p2 = *(ufunc_T **)s2;
+ return profile_cmp(&p1->uf_tm_self, &p2->uf_tm_self);
+}
+
+
+/*
+ * If "name" has a package name try autoloading the script for it.
+ * Return TRUE if a package was loaded.
+ */
+static int
+script_autoload (
+ char_u *name,
+ int reload /* load script again when already loaded */
+)
+{
+ char_u *p;
+ char_u *scriptname, *tofree;
+ int ret = FALSE;
+ int i;
+
+ /* If there is no '#' after name[0] there is no package name. */
+ p = vim_strchr(name, AUTOLOAD_CHAR);
+ if (p == NULL || p == name)
+ return FALSE;
+
+ tofree = scriptname = autoload_name(name);
+
+ /* Find the name in the list of previously loaded package names. Skip
+ * "autoload/", it's always the same. */
+ for (i = 0; i < ga_loaded.ga_len; ++i)
+ if (STRCMP(((char_u **)ga_loaded.ga_data)[i] + 9, scriptname + 9) == 0)
+ break;
+ if (!reload && i < ga_loaded.ga_len)
+ ret = FALSE; /* was loaded already */
+ else {
+ /* Remember the name if it wasn't loaded already. */
+ if (i == ga_loaded.ga_len) {
+ ga_grow(&ga_loaded, 1);
+ ((char_u **)ga_loaded.ga_data)[ga_loaded.ga_len++] = scriptname;
+ tofree = NULL;
+ }
+
+ /* Try loading the package from $VIMRUNTIME/autoload/<name>.vim */
+ if (source_runtime(scriptname, FALSE) == OK)
+ ret = TRUE;
+ }
+
+ free(tofree);
+ return ret;
+}
+
+/*
+ * Return the autoload script name for a function or variable name.
+ * Returns NULL when out of memory.
+ */
+static char_u *autoload_name(char_u *name)
+{
+ char_u *p;
+ char_u *scriptname;
+
+ /* Get the script file name: replace '#' with '/', append ".vim". */
+ scriptname = alloc((unsigned)(STRLEN(name) + 14));
+ if (scriptname == NULL)
+ return FALSE;
+ STRCPY(scriptname, "autoload/");
+ STRCAT(scriptname, name);
+ *vim_strrchr(scriptname, AUTOLOAD_CHAR) = NUL;
+ STRCAT(scriptname, ".vim");
+ while ((p = vim_strchr(scriptname, AUTOLOAD_CHAR)) != NULL)
+ *p = '/';
+ return scriptname;
+}
+
+
+/*
+ * Function given to ExpandGeneric() to obtain the list of user defined
+ * function names.
+ */
+char_u *get_user_func_name(expand_T *xp, int idx)
+{
+ static long_u done;
+ static hashitem_T *hi;
+ ufunc_T *fp;
+
+ if (idx == 0) {
+ done = 0;
+ hi = func_hashtab.ht_array;
+ }
+ if (done < func_hashtab.ht_used) {
+ if (done++ > 0)
+ ++hi;
+ while (HASHITEM_EMPTY(hi))
+ ++hi;
+ fp = HI2UF(hi);
+
+ if (fp->uf_flags & FC_DICT)
+ return (char_u *)""; /* don't show dict functions */
+
+ if (STRLEN(fp->uf_name) + 4 >= IOSIZE)
+ return fp->uf_name; /* prevents overflow */
+
+ cat_func_name(IObuff, fp);
+ if (xp->xp_context != EXPAND_USER_FUNC) {
+ STRCAT(IObuff, "(");
+ if (!fp->uf_varargs && fp->uf_args.ga_len == 0)
+ STRCAT(IObuff, ")");
+ }
+ return IObuff;
+ }
+ return NULL;
+}
+
+
+/*
+ * Copy the function name of "fp" to buffer "buf".
+ * "buf" must be able to hold the function name plus three bytes.
+ * Takes care of script-local function names.
+ */
+static void cat_func_name(char_u *buf, ufunc_T *fp)
+{
+ if (fp->uf_name[0] == K_SPECIAL) {
+ STRCPY(buf, "<SNR>");
+ STRCAT(buf, fp->uf_name + 3);
+ } else
+ STRCPY(buf, fp->uf_name);
+}
+
+/*
+ * ":delfunction {name}"
+ */
+void ex_delfunction(exarg_T *eap)
+{
+ ufunc_T *fp = NULL;
+ char_u *p;
+ char_u *name;
+ funcdict_T fudi;
+
+ p = eap->arg;
+ name = trans_function_name(&p, eap->skip, 0, &fudi);
+ free(fudi.fd_newkey);
+ if (name == NULL) {
+ if (fudi.fd_dict != NULL && !eap->skip)
+ EMSG(_(e_funcref));
+ return;
+ }
+ if (!ends_excmd(*skipwhite(p))) {
+ free(name);
+ EMSG(_(e_trailing));
+ return;
+ }
+ eap->nextcmd = check_nextcmd(p);
+ if (eap->nextcmd != NULL)
+ *p = NUL;
+
+ if (!eap->skip)
+ fp = find_func(name);
+ free(name);
+
+ if (!eap->skip) {
+ if (fp == NULL) {
+ EMSG2(_(e_nofunc), eap->arg);
+ return;
+ }
+ if (fp->uf_calls > 0) {
+ EMSG2(_("E131: Cannot delete function %s: It is in use"), eap->arg);
+ return;
+ }
+
+ if (fudi.fd_dict != NULL) {
+ /* Delete the dict item that refers to the function, it will
+ * invoke func_unref() and possibly delete the function. */
+ dictitem_remove(fudi.fd_dict, fudi.fd_di);
+ } else
+ func_free(fp);
+ }
+}
+
+/*
+ * Free a function and remove it from the list of functions.
+ */
+static void func_free(ufunc_T *fp)
+{
+ hashitem_T *hi;
+
+ /* clear this function */
+ ga_clear_strings(&(fp->uf_args));
+ ga_clear_strings(&(fp->uf_lines));
+ free(fp->uf_tml_count);
+ free(fp->uf_tml_total);
+ free(fp->uf_tml_self);
+
+ /* remove the function from the function hashtable */
+ hi = hash_find(&func_hashtab, UF2HIKEY(fp));
+ if (HASHITEM_EMPTY(hi))
+ EMSG2(_(e_intern2), "func_free()");
+ else
+ hash_remove(&func_hashtab, hi);
+
+ free(fp);
+}
+
+/*
+ * Unreference a Function: decrement the reference count and free it when it
+ * becomes zero. Only for numbered functions.
+ */
+void func_unref(char_u *name)
+{
+ ufunc_T *fp;
+
+ if (name != NULL && isdigit(*name)) {
+ fp = find_func(name);
+ if (fp == NULL)
+ EMSG2(_(e_intern2), "func_unref()");
+ else if (--fp->uf_refcount <= 0) {
+ /* Only delete it when it's not being used. Otherwise it's done
+ * when "uf_calls" becomes zero. */
+ if (fp->uf_calls == 0)
+ func_free(fp);
+ }
+ }
+}
+
+/*
+ * Count a reference to a Function.
+ */
+void func_ref(char_u *name)
+{
+ ufunc_T *fp;
+
+ if (name != NULL && isdigit(*name)) {
+ fp = find_func(name);
+ if (fp == NULL)
+ EMSG2(_(e_intern2), "func_ref()");
+ else
+ ++fp->uf_refcount;
+ }
+}
+
+/*
+ * Call a user function.
+ */
+static void
+call_user_func (
+ ufunc_T *fp, /* pointer to function */
+ int argcount, /* nr of args */
+ typval_T *argvars, /* arguments */
+ typval_T *rettv, /* return value */
+ linenr_T firstline, /* first line of range */
+ linenr_T lastline, /* last line of range */
+ dict_T *selfdict /* Dictionary for "self" */
+)
+{
+ char_u *save_sourcing_name;
+ linenr_T save_sourcing_lnum;
+ scid_T save_current_SID;
+ funccall_T *fc;
+ int save_did_emsg;
+ static int depth = 0;
+ dictitem_T *v;
+ int fixvar_idx = 0; /* index in fixvar[] */
+ int i;
+ int ai;
+ char_u numbuf[NUMBUFLEN];
+ char_u *name;
+ proftime_T wait_start;
+ proftime_T call_start;
+
+ /* If depth of calling is getting too high, don't execute the function */
+ if (depth >= p_mfd) {
+ EMSG(_("E132: Function call depth is higher than 'maxfuncdepth'"));
+ rettv->v_type = VAR_NUMBER;
+ rettv->vval.v_number = -1;
+ return;
+ }
+ ++depth;
+
+ line_breakcheck(); /* check for CTRL-C hit */
+
+ fc = (funccall_T *)alloc(sizeof(funccall_T));
+ fc->caller = current_funccal;
+ current_funccal = fc;
+ fc->func = fp;
+ fc->rettv = rettv;
+ rettv->vval.v_number = 0;
+ fc->linenr = 0;
+ fc->returned = FALSE;
+ fc->level = ex_nesting_level;
+ /* Check if this function has a breakpoint. */
+ fc->breakpoint = dbg_find_breakpoint(FALSE, fp->uf_name, (linenr_T)0);
+ fc->dbg_tick = debug_tick;
+
+ /*
+ * Note about using fc->fixvar[]: This is an array of FIXVAR_CNT variables
+ * with names up to VAR_SHORT_LEN long. This avoids having to alloc/free
+ * each argument variable and saves a lot of time.
+ */
+ /*
+ * Init l: variables.
+ */
+ init_var_dict(&fc->l_vars, &fc->l_vars_var, VAR_DEF_SCOPE);
+ if (selfdict != NULL) {
+ /* Set l:self to "selfdict". Use "name" to avoid a warning from
+ * some compiler that checks the destination size. */
+ v = &fc->fixvar[fixvar_idx++].var;
+ name = v->di_key;
+ STRCPY(name, "self");
+ v->di_flags = DI_FLAGS_RO + DI_FLAGS_FIX;
+ hash_add(&fc->l_vars.dv_hashtab, DI2HIKEY(v));
+ v->di_tv.v_type = VAR_DICT;
+ v->di_tv.v_lock = 0;
+ v->di_tv.vval.v_dict = selfdict;
+ ++selfdict->dv_refcount;
+ }
+
+ /*
+ * Init a: variables.
+ * Set a:0 to "argcount".
+ * Set a:000 to a list with room for the "..." arguments.
+ */
+ init_var_dict(&fc->l_avars, &fc->l_avars_var, VAR_SCOPE);
+ add_nr_var(&fc->l_avars, &fc->fixvar[fixvar_idx++].var, "0",
+ (varnumber_T)(argcount - fp->uf_args.ga_len));
+ /* Use "name" to avoid a warning from some compiler that checks the
+ * destination size. */
+ v = &fc->fixvar[fixvar_idx++].var;
+ name = v->di_key;
+ STRCPY(name, "000");
+ v->di_flags = DI_FLAGS_RO | DI_FLAGS_FIX;
+ hash_add(&fc->l_avars.dv_hashtab, DI2HIKEY(v));
+ v->di_tv.v_type = VAR_LIST;
+ v->di_tv.v_lock = VAR_FIXED;
+ v->di_tv.vval.v_list = &fc->l_varlist;
+ memset(&fc->l_varlist, 0, sizeof(list_T));
+ fc->l_varlist.lv_refcount = DO_NOT_FREE_CNT;
+ fc->l_varlist.lv_lock = VAR_FIXED;
+
+ /*
+ * Set a:firstline to "firstline" and a:lastline to "lastline".
+ * Set a:name to named arguments.
+ * Set a:N to the "..." arguments.
+ */
+ add_nr_var(&fc->l_avars, &fc->fixvar[fixvar_idx++].var, "firstline",
+ (varnumber_T)firstline);
+ add_nr_var(&fc->l_avars, &fc->fixvar[fixvar_idx++].var, "lastline",
+ (varnumber_T)lastline);
+ for (i = 0; i < argcount; ++i) {
+ ai = i - fp->uf_args.ga_len;
+ if (ai < 0)
+ /* named argument a:name */
+ name = FUNCARG(fp, i);
+ else {
+ /* "..." argument a:1, a:2, etc. */
+ sprintf((char *)numbuf, "%d", ai + 1);
+ name = numbuf;
+ }
+ if (fixvar_idx < FIXVAR_CNT && STRLEN(name) <= VAR_SHORT_LEN) {
+ v = &fc->fixvar[fixvar_idx++].var;
+ v->di_flags = DI_FLAGS_RO | DI_FLAGS_FIX;
+ } else {
+ v = (dictitem_T *)alloc((unsigned)(sizeof(dictitem_T)
+ + STRLEN(name)));
+ if (v == NULL)
+ break;
+ v->di_flags = DI_FLAGS_RO;
+ }
+ STRCPY(v->di_key, name);
+ hash_add(&fc->l_avars.dv_hashtab, DI2HIKEY(v));
+
+ /* Note: the values are copied directly to avoid alloc/free.
+ * "argvars" must have VAR_FIXED for v_lock. */
+ v->di_tv = argvars[i];
+ v->di_tv.v_lock = VAR_FIXED;
+
+ if (ai >= 0 && ai < MAX_FUNC_ARGS) {
+ list_append(&fc->l_varlist, &fc->l_listitems[ai]);
+ fc->l_listitems[ai].li_tv = argvars[i];
+ fc->l_listitems[ai].li_tv.v_lock = VAR_FIXED;
+ }
+ }
+
+ /* Don't redraw while executing the function. */
+ ++RedrawingDisabled;
+ save_sourcing_name = sourcing_name;
+ save_sourcing_lnum = sourcing_lnum;
+ sourcing_lnum = 1;
+ sourcing_name = alloc((unsigned)((save_sourcing_name == NULL ? 0
+ : STRLEN(save_sourcing_name)) +
+ STRLEN(fp->uf_name) + 13));
+ if (sourcing_name != NULL) {
+ if (save_sourcing_name != NULL
+ && STRNCMP(save_sourcing_name, "function ", 9) == 0)
+ sprintf((char *)sourcing_name, "%s..", save_sourcing_name);
+ else
+ STRCPY(sourcing_name, "function ");
+ cat_func_name(sourcing_name + STRLEN(sourcing_name), fp);
+
+ if (p_verbose >= 12) {
+ ++no_wait_return;
+ verbose_enter_scroll();
+
+ smsg((char_u *)_("calling %s"), sourcing_name);
+ if (p_verbose >= 14) {
+ char_u buf[MSG_BUF_LEN];
+ char_u numbuf2[NUMBUFLEN];
+ char_u *tofree;
+ char_u *s;
+
+ msg_puts((char_u *)"(");
+ for (i = 0; i < argcount; ++i) {
+ if (i > 0)
+ msg_puts((char_u *)", ");
+ if (argvars[i].v_type == VAR_NUMBER)
+ msg_outnum((long)argvars[i].vval.v_number);
+ else {
+ s = tv2string(&argvars[i], &tofree, numbuf2, 0);
+ if (s != NULL) {
+ if (vim_strsize(s) > MSG_BUF_CLEN) {
+ trunc_string(s, buf, MSG_BUF_CLEN, MSG_BUF_LEN);
+ s = buf;
+ }
+ msg_puts(s);
+ free(tofree);
+ }
+ }
+ }
+ msg_puts((char_u *)")");
+ }
+ msg_puts((char_u *)"\n"); /* don't overwrite this either */
+
+ verbose_leave_scroll();
+ --no_wait_return;
+ }
+ }
+ if (do_profiling == PROF_YES) {
+ if (!fp->uf_profiling && has_profiling(FALSE, fp->uf_name, NULL))
+ func_do_profile(fp);
+ if (fp->uf_profiling
+ || (fc->caller != NULL && fc->caller->func->uf_profiling)) {
+ ++fp->uf_tm_count;
+ profile_start(&call_start);
+ profile_zero(&fp->uf_tm_children);
+ }
+ script_prof_save(&wait_start);
+ }
+
+ save_current_SID = current_SID;
+ current_SID = fp->uf_script_ID;
+ save_did_emsg = did_emsg;
+ did_emsg = FALSE;
+
+ /* call do_cmdline() to execute the lines */
+ do_cmdline(NULL, get_func_line, (void *)fc,
+ DOCMD_NOWAIT|DOCMD_VERBOSE|DOCMD_REPEAT);
+
+ --RedrawingDisabled;
+
+ /* when the function was aborted because of an error, return -1 */
+ if ((did_emsg &&
+ (fp->uf_flags & FC_ABORT)) || rettv->v_type == VAR_UNKNOWN) {
+ clear_tv(rettv);
+ rettv->v_type = VAR_NUMBER;
+ rettv->vval.v_number = -1;
+ }
+
+ if (do_profiling == PROF_YES && (fp->uf_profiling
+ || (fc->caller != NULL &&
+ fc->caller->func->uf_profiling))) {
+ profile_end(&call_start);
+ profile_sub_wait(&wait_start, &call_start);
+ profile_add(&fp->uf_tm_total, &call_start);
+ profile_self(&fp->uf_tm_self, &call_start, &fp->uf_tm_children);
+ if (fc->caller != NULL && fc->caller->func->uf_profiling) {
+ profile_add(&fc->caller->func->uf_tm_children, &call_start);
+ profile_add(&fc->caller->func->uf_tml_children, &call_start);
+ }
+ }
+
+ /* when being verbose, mention the return value */
+ if (p_verbose >= 12) {
+ ++no_wait_return;
+ verbose_enter_scroll();
+
+ if (aborting())
+ smsg((char_u *)_("%s aborted"), sourcing_name);
+ else if (fc->rettv->v_type == VAR_NUMBER)
+ smsg((char_u *)_("%s returning #%" PRId64 ""),
+ sourcing_name, (int64_t)fc->rettv->vval.v_number);
+ else {
+ char_u buf[MSG_BUF_LEN];
+ char_u numbuf2[NUMBUFLEN];
+ char_u *tofree;
+ char_u *s;
+
+ /* The value may be very long. Skip the middle part, so that we
+ * have some idea how it starts and ends. smsg() would always
+ * truncate it at the end. */
+ s = tv2string(fc->rettv, &tofree, numbuf2, 0);
+ if (s != NULL) {
+ if (vim_strsize(s) > MSG_BUF_CLEN) {
+ trunc_string(s, buf, MSG_BUF_CLEN, MSG_BUF_LEN);
+ s = buf;
+ }
+ smsg((char_u *)_("%s returning %s"), sourcing_name, s);
+ free(tofree);
+ }
+ }
+ msg_puts((char_u *)"\n"); /* don't overwrite this either */
+
+ verbose_leave_scroll();
+ --no_wait_return;
+ }
+
+ free(sourcing_name);
+ sourcing_name = save_sourcing_name;
+ sourcing_lnum = save_sourcing_lnum;
+ current_SID = save_current_SID;
+ if (do_profiling == PROF_YES)
+ script_prof_restore(&wait_start);
+
+ if (p_verbose >= 12 && sourcing_name != NULL) {
+ ++no_wait_return;
+ verbose_enter_scroll();
+
+ smsg((char_u *)_("continuing in %s"), sourcing_name);
+ msg_puts((char_u *)"\n"); /* don't overwrite this either */
+
+ verbose_leave_scroll();
+ --no_wait_return;
+ }
+
+ did_emsg |= save_did_emsg;
+ current_funccal = fc->caller;
+ --depth;
+
+ /* If the a:000 list and the l: and a: dicts are not referenced we can
+ * free the funccall_T and what's in it. */
+ if (fc->l_varlist.lv_refcount == DO_NOT_FREE_CNT
+ && fc->l_vars.dv_refcount == DO_NOT_FREE_CNT
+ && fc->l_avars.dv_refcount == DO_NOT_FREE_CNT) {
+ free_funccal(fc, FALSE);
+ } else {
+ hashitem_T *hi;
+ listitem_T *li;
+ int todo;
+
+ /* "fc" is still in use. This can happen when returning "a:000" or
+ * assigning "l:" to a global variable.
+ * Link "fc" in the list for garbage collection later. */
+ fc->caller = previous_funccal;
+ previous_funccal = fc;
+
+ /* Make a copy of the a: variables, since we didn't do that above. */
+ todo = (int)fc->l_avars.dv_hashtab.ht_used;
+ for (hi = fc->l_avars.dv_hashtab.ht_array; todo > 0; ++hi) {
+ if (!HASHITEM_EMPTY(hi)) {
+ --todo;
+ v = HI2DI(hi);
+ copy_tv(&v->di_tv, &v->di_tv);
+ }
+ }
+
+ /* Make a copy of the a:000 items, since we didn't do that above. */
+ for (li = fc->l_varlist.lv_first; li != NULL; li = li->li_next)
+ copy_tv(&li->li_tv, &li->li_tv);
+ }
+}
+
+/*
+ * Return TRUE if items in "fc" do not have "copyID". That means they are not
+ * referenced from anywhere that is in use.
+ */
+static int can_free_funccal(funccall_T *fc, int copyID)
+{
+ return fc->l_varlist.lv_copyID != copyID
+ && fc->l_vars.dv_copyID != copyID
+ && fc->l_avars.dv_copyID != copyID;
+}
+
+/*
+ * Free "fc" and what it contains.
+ */
+static void
+free_funccal (
+ funccall_T *fc,
+ int free_val /* a: vars were allocated */
+)
+{
+ listitem_T *li;
+
+ /* The a: variables typevals may not have been allocated, only free the
+ * allocated variables. */
+ vars_clear_ext(&fc->l_avars.dv_hashtab, free_val);
+
+ /* free all l: variables */
+ vars_clear(&fc->l_vars.dv_hashtab);
+
+ /* Free the a:000 variables if they were allocated. */
+ if (free_val)
+ for (li = fc->l_varlist.lv_first; li != NULL; li = li->li_next)
+ clear_tv(&li->li_tv);
+
+ free(fc);
+}
+
+/*
+ * Add a number variable "name" to dict "dp" with value "nr".
+ */
+static void add_nr_var(dict_T *dp, dictitem_T *v, char *name, varnumber_T nr)
+{
+ STRCPY(v->di_key, name);
+ v->di_flags = DI_FLAGS_RO | DI_FLAGS_FIX;
+ hash_add(&dp->dv_hashtab, DI2HIKEY(v));
+ v->di_tv.v_type = VAR_NUMBER;
+ v->di_tv.v_lock = VAR_FIXED;
+ v->di_tv.vval.v_number = nr;
+}
+
+/*
+ * ":return [expr]"
+ */
+void ex_return(exarg_T *eap)
+{
+ char_u *arg = eap->arg;
+ typval_T rettv;
+ int returning = FALSE;
+
+ if (current_funccal == NULL) {
+ EMSG(_("E133: :return not inside a function"));
+ return;
+ }
+
+ if (eap->skip)
+ ++emsg_skip;
+
+ eap->nextcmd = NULL;
+ if ((*arg != NUL && *arg != '|' && *arg != '\n')
+ && eval0(arg, &rettv, &eap->nextcmd, !eap->skip) != FAIL) {
+ if (!eap->skip)
+ returning = do_return(eap, FALSE, TRUE, &rettv);
+ else
+ clear_tv(&rettv);
+ }
+ /* It's safer to return also on error. */
+ else if (!eap->skip) {
+ /*
+ * Return unless the expression evaluation has been cancelled due to an
+ * aborting error, an interrupt, or an exception.
+ */
+ if (!aborting())
+ returning = do_return(eap, FALSE, TRUE, NULL);
+ }
+
+ /* When skipping or the return gets pending, advance to the next command
+ * in this line (!returning). Otherwise, ignore the rest of the line.
+ * Following lines will be ignored by get_func_line(). */
+ if (returning)
+ eap->nextcmd = NULL;
+ else if (eap->nextcmd == NULL) /* no argument */
+ eap->nextcmd = check_nextcmd(arg);
+
+ if (eap->skip)
+ --emsg_skip;
+}
+
+/*
+ * Return from a function. Possibly makes the return pending. Also called
+ * for a pending return at the ":endtry" or after returning from an extra
+ * do_cmdline(). "reanimate" is used in the latter case. "is_cmd" is set
+ * when called due to a ":return" command. "rettv" may point to a typval_T
+ * with the return rettv. Returns TRUE when the return can be carried out,
+ * FALSE when the return gets pending.
+ */
+int do_return(exarg_T *eap, int reanimate, int is_cmd, void *rettv)
+{
+ int idx;
+ struct condstack *cstack = eap->cstack;
+
+ if (reanimate)
+ /* Undo the return. */
+ current_funccal->returned = FALSE;
+
+ /*
+ * Cleanup (and inactivate) conditionals, but stop when a try conditional
+ * not in its finally clause (which then is to be executed next) is found.
+ * In this case, make the ":return" pending for execution at the ":endtry".
+ * Otherwise, return normally.
+ */
+ idx = cleanup_conditionals(eap->cstack, 0, TRUE);
+ if (idx >= 0) {
+ cstack->cs_pending[idx] = CSTP_RETURN;
+
+ if (!is_cmd && !reanimate)
+ /* A pending return again gets pending. "rettv" points to an
+ * allocated variable with the rettv of the original ":return"'s
+ * argument if present or is NULL else. */
+ cstack->cs_rettv[idx] = rettv;
+ else {
+ /* When undoing a return in order to make it pending, get the stored
+ * return rettv. */
+ if (reanimate)
+ rettv = current_funccal->rettv;
+
+ if (rettv != NULL) {
+ /* Store the value of the pending return. */
+ cstack->cs_rettv[idx] = xcalloc(1, sizeof(typval_T));
+ *(typval_T *)cstack->cs_rettv[idx] = *(typval_T *)rettv;
+ } else
+ cstack->cs_rettv[idx] = NULL;
+
+ if (reanimate) {
+ /* The pending return value could be overwritten by a ":return"
+ * without argument in a finally clause; reset the default
+ * return value. */
+ current_funccal->rettv->v_type = VAR_NUMBER;
+ current_funccal->rettv->vval.v_number = 0;
+ }
+ }
+ report_make_pending(CSTP_RETURN, rettv);
+ } else {
+ current_funccal->returned = TRUE;
+
+ /* If the return is carried out now, store the return value. For
+ * a return immediately after reanimation, the value is already
+ * there. */
+ if (!reanimate && rettv != NULL) {
+ clear_tv(current_funccal->rettv);
+ *current_funccal->rettv = *(typval_T *)rettv;
+ if (!is_cmd)
+ free(rettv);
+ }
+ }
+
+ return idx < 0;
+}
+
+/*
+ * Free the variable with a pending return value.
+ */
+void discard_pending_return(void *rettv)
+{
+ free_tv((typval_T *)rettv);
+}
+
+/*
+ * Generate a return command for producing the value of "rettv". The result
+ * is an allocated string. Used by report_pending() for verbose messages.
+ */
+char_u *get_return_cmd(void *rettv)
+{
+ char_u *s = NULL;
+ char_u *tofree = NULL;
+ char_u numbuf[NUMBUFLEN];
+
+ if (rettv != NULL)
+ s = echo_string((typval_T *)rettv, &tofree, numbuf, 0);
+ if (s == NULL)
+ s = (char_u *)"";
+
+ STRCPY(IObuff, ":return ");
+ STRNCPY(IObuff + 8, s, IOSIZE - 8);
+ if (STRLEN(s) + 8 >= IOSIZE)
+ STRCPY(IObuff + IOSIZE - 4, "...");
+ free(tofree);
+ return vim_strsave(IObuff);
+}
+
+/*
+ * Get next function line.
+ * Called by do_cmdline() to get the next line.
+ * Returns allocated string, or NULL for end of function.
+ */
+char_u *get_func_line(int c, void *cookie, int indent)
+{
+ funccall_T *fcp = (funccall_T *)cookie;
+ ufunc_T *fp = fcp->func;
+ char_u *retval;
+ garray_T *gap; /* growarray with function lines */
+
+ /* If breakpoints have been added/deleted need to check for it. */
+ if (fcp->dbg_tick != debug_tick) {
+ fcp->breakpoint = dbg_find_breakpoint(FALSE, fp->uf_name,
+ sourcing_lnum);
+ fcp->dbg_tick = debug_tick;
+ }
+ if (do_profiling == PROF_YES)
+ func_line_end(cookie);
+
+ gap = &fp->uf_lines;
+ if (((fp->uf_flags & FC_ABORT) && did_emsg && !aborted_in_try())
+ || fcp->returned)
+ retval = NULL;
+ else {
+ /* Skip NULL lines (continuation lines). */
+ while (fcp->linenr < gap->ga_len
+ && ((char_u **)(gap->ga_data))[fcp->linenr] == NULL)
+ ++fcp->linenr;
+ if (fcp->linenr >= gap->ga_len)
+ retval = NULL;
+ else {
+ retval = vim_strsave(((char_u **)(gap->ga_data))[fcp->linenr++]);
+ sourcing_lnum = fcp->linenr;
+ if (do_profiling == PROF_YES)
+ func_line_start(cookie);
+ }
+ }
+
+ /* Did we encounter a breakpoint? */
+ if (fcp->breakpoint != 0 && fcp->breakpoint <= sourcing_lnum) {
+ dbg_breakpoint(fp->uf_name, sourcing_lnum);
+ /* Find next breakpoint. */
+ fcp->breakpoint = dbg_find_breakpoint(FALSE, fp->uf_name,
+ sourcing_lnum);
+ fcp->dbg_tick = debug_tick;
+ }
+
+ return retval;
+}
+
+/*
+ * Called when starting to read a function line.
+ * "sourcing_lnum" must be correct!
+ * When skipping lines it may not actually be executed, but we won't find out
+ * until later and we need to store the time now.
+ */
+void func_line_start(void *cookie)
+{
+ funccall_T *fcp = (funccall_T *)cookie;
+ ufunc_T *fp = fcp->func;
+
+ if (fp->uf_profiling && sourcing_lnum >= 1
+ && sourcing_lnum <= fp->uf_lines.ga_len) {
+ fp->uf_tml_idx = sourcing_lnum - 1;
+ /* Skip continuation lines. */
+ while (fp->uf_tml_idx > 0 && FUNCLINE(fp, fp->uf_tml_idx) == NULL)
+ --fp->uf_tml_idx;
+ fp->uf_tml_execed = FALSE;
+ profile_start(&fp->uf_tml_start);
+ profile_zero(&fp->uf_tml_children);
+ profile_get_wait(&fp->uf_tml_wait);
+ }
+}
+
+/*
+ * Called when actually executing a function line.
+ */
+void func_line_exec(void *cookie)
+{
+ funccall_T *fcp = (funccall_T *)cookie;
+ ufunc_T *fp = fcp->func;
+
+ if (fp->uf_profiling && fp->uf_tml_idx >= 0)
+ fp->uf_tml_execed = TRUE;
+}
+
+/*
+ * Called when done with a function line.
+ */
+void func_line_end(void *cookie)
+{
+ funccall_T *fcp = (funccall_T *)cookie;
+ ufunc_T *fp = fcp->func;
+
+ if (fp->uf_profiling && fp->uf_tml_idx >= 0) {
+ if (fp->uf_tml_execed) {
+ ++fp->uf_tml_count[fp->uf_tml_idx];
+ profile_end(&fp->uf_tml_start);
+ profile_sub_wait(&fp->uf_tml_wait, &fp->uf_tml_start);
+ profile_add(&fp->uf_tml_total[fp->uf_tml_idx], &fp->uf_tml_start);
+ profile_self(&fp->uf_tml_self[fp->uf_tml_idx], &fp->uf_tml_start,
+ &fp->uf_tml_children);
+ }
+ fp->uf_tml_idx = -1;
+ }
+}
+
+/*
+ * Return TRUE if the currently active function should be ended, because a
+ * return was encountered or an error occurred. Used inside a ":while".
+ */
+int func_has_ended(void *cookie)
+{
+ funccall_T *fcp = (funccall_T *)cookie;
+
+ /* Ignore the "abort" flag if the abortion behavior has been changed due to
+ * an error inside a try conditional. */
+ return ((fcp->func->uf_flags & FC_ABORT) && did_emsg && !aborted_in_try())
+ || fcp->returned;
+}
+
+/*
+ * return TRUE if cookie indicates a function which "abort"s on errors.
+ */
+int func_has_abort(void *cookie)
+{
+ return ((funccall_T *)cookie)->func->uf_flags & FC_ABORT;
+}
+
+typedef enum {
+ VAR_FLAVOUR_DEFAULT, /* doesn't start with uppercase */
+ VAR_FLAVOUR_SESSION, /* starts with uppercase, some lower */
+ VAR_FLAVOUR_VIMINFO /* all uppercase */
+} var_flavour_T;
+
+static var_flavour_T var_flavour(char_u *varname);
+
+static var_flavour_T var_flavour(char_u *varname)
+{
+ char_u *p = varname;
+
+ if (ASCII_ISUPPER(*p)) {
+ while (*(++p))
+ if (ASCII_ISLOWER(*p))
+ return VAR_FLAVOUR_SESSION;
+ return VAR_FLAVOUR_VIMINFO;
+ } else
+ return VAR_FLAVOUR_DEFAULT;
+}
+
+/*
+ * Restore global vars that start with a capital from the viminfo file
+ */
+int read_viminfo_varlist(vir_T *virp, int writing)
+{
+ char_u *tab;
+ int type = VAR_NUMBER;
+ typval_T tv;
+
+ if (!writing && (find_viminfo_parameter('!') != NULL)) {
+ tab = vim_strchr(virp->vir_line + 1, '\t');
+ if (tab != NULL) {
+ *tab++ = NUL; /* isolate the variable name */
+ switch (*tab) {
+ case 'S': type = VAR_STRING; break;
+ case 'F': type = VAR_FLOAT; break;
+ case 'D': type = VAR_DICT; break;
+ case 'L': type = VAR_LIST; break;
+ }
+
+ tab = vim_strchr(tab, '\t');
+ if (tab != NULL) {
+ tv.v_type = type;
+ if (type == VAR_STRING || type == VAR_DICT || type == VAR_LIST)
+ tv.vval.v_string = viminfo_readstring(virp,
+ (int)(tab - virp->vir_line + 1), TRUE);
+ else if (type == VAR_FLOAT)
+ (void)string2float(tab + 1, &tv.vval.v_float);
+ else
+ tv.vval.v_number = atol((char *)tab + 1);
+ if (type == VAR_DICT || type == VAR_LIST) {
+ typval_T *etv = eval_expr(tv.vval.v_string, NULL);
+
+ if (etv == NULL)
+ /* Failed to parse back the dict or list, use it as a
+ * string. */
+ tv.v_type = VAR_STRING;
+ else {
+ free(tv.vval.v_string);
+ tv = *etv;
+ free(etv);
+ }
+ }
+
+ set_var(virp->vir_line + 1, &tv, FALSE);
+
+ if (tv.v_type == VAR_STRING)
+ free(tv.vval.v_string);
+ else if (tv.v_type == VAR_DICT || tv.v_type == VAR_LIST)
+ clear_tv(&tv);
+ }
+ }
+ }
+
+ return viminfo_readline(virp);
+}
+
+/*
+ * Write global vars that start with a capital to the viminfo file
+ */
+void write_viminfo_varlist(FILE *fp)
+{
+ hashitem_T *hi;
+ dictitem_T *this_var;
+ int todo;
+ char *s;
+ char_u *p;
+ char_u *tofree;
+ char_u numbuf[NUMBUFLEN];
+
+ if (find_viminfo_parameter('!') == NULL)
+ return;
+
+ fputs(_("\n# global variables:\n"), fp);
+
+ todo = (int)globvarht.ht_used;
+ for (hi = globvarht.ht_array; todo > 0; ++hi) {
+ if (!HASHITEM_EMPTY(hi)) {
+ --todo;
+ this_var = HI2DI(hi);
+ if (var_flavour(this_var->di_key) == VAR_FLAVOUR_VIMINFO) {
+ switch (this_var->di_tv.v_type) {
+ case VAR_STRING: s = "STR"; break;
+ case VAR_NUMBER: s = "NUM"; break;
+ case VAR_FLOAT: s = "FLO"; break;
+ case VAR_DICT: s = "DIC"; break;
+ case VAR_LIST: s = "LIS"; break;
+ default: continue;
+ }
+ fprintf(fp, "!%s\t%s\t", this_var->di_key, s);
+ p = echo_string(&this_var->di_tv, &tofree, numbuf, 0);
+ if (p != NULL)
+ viminfo_writestring(fp, p);
+ free(tofree);
+ }
+ }
+ }
+}
+
+int store_session_globals(FILE *fd)
+{
+ hashitem_T *hi;
+ dictitem_T *this_var;
+ int todo;
+ char_u *p, *t;
+
+ todo = (int)globvarht.ht_used;
+ for (hi = globvarht.ht_array; todo > 0; ++hi) {
+ if (!HASHITEM_EMPTY(hi)) {
+ --todo;
+ this_var = HI2DI(hi);
+ if ((this_var->di_tv.v_type == VAR_NUMBER
+ || this_var->di_tv.v_type == VAR_STRING)
+ && var_flavour(this_var->di_key) == VAR_FLAVOUR_SESSION) {
+ /* Escape special characters with a backslash. Turn a LF and
+ * CR into \n and \r. */
+ p = vim_strsave_escaped(get_tv_string(&this_var->di_tv),
+ (char_u *)"\\\"\n\r");
+ if (p == NULL) /* out of memory */
+ break;
+ for (t = p; *t != NUL; ++t)
+ if (*t == '\n')
+ *t = 'n';
+ else if (*t == '\r')
+ *t = 'r';
+ if ((fprintf(fd, "let %s = %c%s%c",
+ this_var->di_key,
+ (this_var->di_tv.v_type == VAR_STRING) ? '"'
+ : ' ',
+ p,
+ (this_var->di_tv.v_type == VAR_STRING) ? '"'
+ : ' ') < 0)
+ || put_eol(fd) == FAIL) {
+ free(p);
+ return FAIL;
+ }
+ free(p);
+ } else if (this_var->di_tv.v_type == VAR_FLOAT
+ && var_flavour(this_var->di_key) == VAR_FLAVOUR_SESSION) {
+ float_T f = this_var->di_tv.vval.v_float;
+ int sign = ' ';
+
+ if (f < 0) {
+ f = -f;
+ sign = '-';
+ }
+ if ((fprintf(fd, "let %s = %c%f",
+ this_var->di_key, sign, f) < 0)
+ || put_eol(fd) == FAIL)
+ return FAIL;
+ }
+ }
+ }
+ return OK;
+}
+
+/*
+ * Display script name where an item was last set.
+ * Should only be invoked when 'verbose' is non-zero.
+ */
+void last_set_msg(scid_T scriptID)
+{
+ char_u *p;
+
+ if (scriptID != 0) {
+ p = home_replace_save(NULL, get_scriptname(scriptID));
+ if (p != NULL) {
+ verbose_enter();
+ MSG_PUTS(_("\n\tLast set from "));
+ MSG_PUTS(p);
+ free(p);
+ verbose_leave();
+ }
+ }
+}
+
+/*
+ * List v:oldfiles in a nice way.
+ */
+void ex_oldfiles(exarg_T *eap)
+{
+ list_T *l = vimvars[VV_OLDFILES].vv_list;
+ listitem_T *li;
+ int nr = 0;
+
+ if (l == NULL)
+ msg((char_u *)_("No old files"));
+ else {
+ msg_start();
+ msg_scroll = TRUE;
+ for (li = l->lv_first; li != NULL && !got_int; li = li->li_next) {
+ msg_outnum((long)++nr);
+ MSG_PUTS(": ");
+ msg_outtrans(get_tv_string(&li->li_tv));
+ msg_putchar('\n');
+ out_flush(); /* output one line at a time */
+ ui_breakcheck();
+ }
+ /* Assume "got_int" was set to truncate the listing. */
+ got_int = FALSE;
+
+ }
+}
+
+
+
+
+
+/*
+ * Adjust a filename, according to a string of modifiers.
+ * *fnamep must be NUL terminated when called. When returning, the length is
+ * determined by *fnamelen.
+ * Returns VALID_ flags or -1 for failure.
+ * When there is an error, *fnamep is set to NULL.
+ */
+int
+modify_fname (
+ char_u *src, /* string with modifiers */
+ int *usedlen, /* characters after src that are used */
+ char_u **fnamep, /* file name so far */
+ char_u **bufp, /* buffer for allocated file name or NULL */
+ int *fnamelen /* length of fnamep */
+)
+{
+ int valid = 0;
+ char_u *tail;
+ char_u *s, *p, *pbuf;
+ char_u dirname[MAXPATHL];
+ int c;
+ int has_fullname = 0;
+
+repeat:
+ /* ":p" - full path/file_name */
+ if (src[*usedlen] == ':' && src[*usedlen + 1] == 'p') {
+ has_fullname = 1;
+
+ valid |= VALID_PATH;
+ *usedlen += 2;
+
+ /* Expand "~/path" for all systems and "~user/path" for Unix */
+ if ((*fnamep)[0] == '~'
+#if !defined(UNIX)
+ && ((*fnamep)[1] == '/'
+# ifdef BACKSLASH_IN_FILENAME
+ || (*fnamep)[1] == '\\'
+# endif
+ || (*fnamep)[1] == NUL)
+
+#endif
+ ) {
+ *fnamep = expand_env_save(*fnamep);
+ free(*bufp); /* free any allocated file name */
+ *bufp = *fnamep;
+ if (*fnamep == NULL)
+ return -1;
+ }
+
+ /* When "/." or "/.." is used: force expansion to get rid of it. */
+ for (p = *fnamep; *p != NUL; mb_ptr_adv(p)) {
+ if (vim_ispathsep(*p)
+ && p[1] == '.'
+ && (p[2] == NUL
+ || vim_ispathsep(p[2])
+ || (p[2] == '.'
+ && (p[3] == NUL || vim_ispathsep(p[3])))))
+ break;
+ }
+
+ /* FullName_save() is slow, don't use it when not needed. */
+ if (*p != NUL || !vim_isAbsName(*fnamep)) {
+ *fnamep = FullName_save(*fnamep, *p != NUL);
+ free(*bufp); /* free any allocated file name */
+ *bufp = *fnamep;
+ if (*fnamep == NULL)
+ return -1;
+ }
+
+ /* Append a path separator to a directory. */
+ if (os_isdir(*fnamep)) {
+ /* Make room for one or two extra characters. */
+ *fnamep = vim_strnsave(*fnamep, (int)STRLEN(*fnamep) + 2);
+ free(*bufp); /* free any allocated file name */
+ *bufp = *fnamep;
+ if (*fnamep == NULL)
+ return -1;
+ add_pathsep(*fnamep);
+ }
+ }
+
+ /* ":." - path relative to the current directory */
+ /* ":~" - path relative to the home directory */
+ /* ":8" - shortname path - postponed till after */
+ while (src[*usedlen] == ':'
+ && ((c = src[*usedlen + 1]) == '.' || c == '~' || c == '8')) {
+ *usedlen += 2;
+ if (c == '8') {
+ continue;
+ }
+ pbuf = NULL;
+ /* Need full path first (use expand_env() to remove a "~/") */
+ if (!has_fullname) {
+ if (c == '.' && **fnamep == '~')
+ p = pbuf = expand_env_save(*fnamep);
+ else
+ p = pbuf = FullName_save(*fnamep, FALSE);
+ } else
+ p = *fnamep;
+
+ has_fullname = 0;
+
+ if (p != NULL) {
+ if (c == '.') {
+ os_dirname(dirname, MAXPATHL);
+ s = path_shorten_fname(p, dirname);
+ if (s != NULL) {
+ *fnamep = s;
+ if (pbuf != NULL) {
+ free(*bufp); /* free any allocated file name */
+ *bufp = pbuf;
+ pbuf = NULL;
+ }
+ }
+ } else {
+ home_replace(NULL, p, dirname, MAXPATHL, TRUE);
+ /* Only replace it when it starts with '~' */
+ if (*dirname == '~') {
+ s = vim_strsave(dirname);
+ if (s != NULL) {
+ *fnamep = s;
+ free(*bufp);
+ *bufp = s;
+ }
+ }
+ }
+ free(pbuf);
+ }
+ }
+
+ tail = path_tail(*fnamep);
+ *fnamelen = (int)STRLEN(*fnamep);
+
+ /* ":h" - head, remove "/file_name", can be repeated */
+ /* Don't remove the first "/" or "c:\" */
+ while (src[*usedlen] == ':' && src[*usedlen + 1] == 'h') {
+ valid |= VALID_HEAD;
+ *usedlen += 2;
+ s = get_past_head(*fnamep);
+ while (tail > s && after_pathsep(s, tail))
+ mb_ptr_back(*fnamep, tail);
+ *fnamelen = (int)(tail - *fnamep);
+ if (*fnamelen == 0) {
+ /* Result is empty. Turn it into "." to make ":cd %:h" work. */
+ p = vim_strsave((char_u *)".");
+ if (p == NULL)
+ return -1;
+ free(*bufp);
+ *bufp = *fnamep = tail = p;
+ *fnamelen = 1;
+ } else {
+ while (tail > s && !after_pathsep(s, tail))
+ mb_ptr_back(*fnamep, tail);
+ }
+ }
+
+ /* ":8" - shortname */
+ if (src[*usedlen] == ':' && src[*usedlen + 1] == '8') {
+ *usedlen += 2;
+ }
+
+
+ /* ":t" - tail, just the basename */
+ if (src[*usedlen] == ':' && src[*usedlen + 1] == 't') {
+ *usedlen += 2;
+ *fnamelen -= (int)(tail - *fnamep);
+ *fnamep = tail;
+ }
+
+ /* ":e" - extension, can be repeated */
+ /* ":r" - root, without extension, can be repeated */
+ while (src[*usedlen] == ':'
+ && (src[*usedlen + 1] == 'e' || src[*usedlen + 1] == 'r')) {
+ /* find a '.' in the tail:
+ * - for second :e: before the current fname
+ * - otherwise: The last '.'
+ */
+ if (src[*usedlen + 1] == 'e' && *fnamep > tail)
+ s = *fnamep - 2;
+ else
+ s = *fnamep + *fnamelen - 1;
+ for (; s > tail; --s)
+ if (s[0] == '.')
+ break;
+ if (src[*usedlen + 1] == 'e') { /* :e */
+ if (s > tail) {
+ *fnamelen += (int)(*fnamep - (s + 1));
+ *fnamep = s + 1;
+ } else if (*fnamep <= tail)
+ *fnamelen = 0;
+ } else { /* :r */
+ if (s > tail) /* remove one extension */
+ *fnamelen = (int)(s - *fnamep);
+ }
+ *usedlen += 2;
+ }
+
+ /* ":s?pat?foo?" - substitute */
+ /* ":gs?pat?foo?" - global substitute */
+ if (src[*usedlen] == ':'
+ && (src[*usedlen + 1] == 's'
+ || (src[*usedlen + 1] == 'g' && src[*usedlen + 2] == 's'))) {
+ char_u *str;
+ char_u *pat;
+ char_u *sub;
+ int sep;
+ char_u *flags;
+ int didit = FALSE;
+
+ flags = (char_u *)"";
+ s = src + *usedlen + 2;
+ if (src[*usedlen + 1] == 'g') {
+ flags = (char_u *)"g";
+ ++s;
+ }
+
+ sep = *s++;
+ if (sep) {
+ /* find end of pattern */
+ p = vim_strchr(s, sep);
+ if (p != NULL) {
+ pat = vim_strnsave(s, (int)(p - s));
+ if (pat != NULL) {
+ s = p + 1;
+ /* find end of substitution */
+ p = vim_strchr(s, sep);
+ if (p != NULL) {
+ sub = vim_strnsave(s, (int)(p - s));
+ str = vim_strnsave(*fnamep, *fnamelen);
+ if (sub != NULL && str != NULL) {
+ *usedlen = (int)(p + 1 - src);
+ s = do_string_sub(str, pat, sub, flags);
+ if (s != NULL) {
+ *fnamep = s;
+ *fnamelen = (int)STRLEN(s);
+ free(*bufp);
+ *bufp = s;
+ didit = TRUE;
+ }
+ }
+ free(sub);
+ free(str);
+ }
+ free(pat);
+ }
+ }
+ /* after using ":s", repeat all the modifiers */
+ if (didit)
+ goto repeat;
+ }
+ }
+
+ if (src[*usedlen] == ':' && src[*usedlen + 1] == 'S') {
+ p = vim_strsave_shellescape(*fnamep, false, false);
+ free(*bufp);
+ *bufp = *fnamep = p;
+ *fnamelen = (int)STRLEN(p);
+ *usedlen += 2;
+ }
+
+ return valid;
+}
+
+/*
+ * Perform a substitution on "str" with pattern "pat" and substitute "sub".
+ * "flags" can be "g" to do a global substitute.
+ * Returns an allocated string, NULL for error.
+ */
+char_u *do_string_sub(char_u *str, char_u *pat, char_u *sub, char_u *flags)
+{
+ int sublen;
+ regmatch_T regmatch;
+ int i;
+ int do_all;
+ char_u *tail;
+ garray_T ga;
+ char_u *ret;
+ char_u *save_cpo;
+ char_u *zero_width = NULL;
+
+ /* Make 'cpoptions' empty, so that the 'l' flag doesn't work here */
+ save_cpo = p_cpo;
+ p_cpo = empty_option;
+
+ ga_init(&ga, 1, 200);
+
+ do_all = (flags[0] == 'g');
+
+ regmatch.rm_ic = p_ic;
+ regmatch.regprog = vim_regcomp(pat, RE_MAGIC + RE_STRING);
+ if (regmatch.regprog != NULL) {
+ tail = str;
+ while (vim_regexec_nl(&regmatch, str, (colnr_T)(tail - str))) {
+ /* Skip empty match except for first match. */
+ if (regmatch.startp[0] == regmatch.endp[0]) {
+ if (zero_width == regmatch.startp[0]) {
+ /* avoid getting stuck on a match with an empty string */
+ *((char_u *)ga.ga_data + ga.ga_len) = *tail++;
+ ++ga.ga_len;
+ continue;
+ }
+ zero_width = regmatch.startp[0];
+ }
+
+ /*
+ * Get some space for a temporary buffer to do the substitution
+ * into. It will contain:
+ * - The text up to where the match is.
+ * - The substituted text.
+ * - The text after the match.
+ */
+ sublen = vim_regsub(&regmatch, sub, tail, FALSE, TRUE, FALSE);
+ ga_grow(&ga, (int)(STRLEN(tail) + sublen -
+ (regmatch.endp[0] - regmatch.startp[0])));
+
+ /* copy the text up to where the match is */
+ i = (int)(regmatch.startp[0] - tail);
+ memmove((char_u *)ga.ga_data + ga.ga_len, tail, (size_t)i);
+ /* add the substituted text */
+ (void)vim_regsub(&regmatch, sub, (char_u *)ga.ga_data
+ + ga.ga_len + i, TRUE, TRUE, FALSE);
+ ga.ga_len += i + sublen - 1;
+ tail = regmatch.endp[0];
+ if (*tail == NUL)
+ break;
+ if (!do_all)
+ break;
+ }
+
+ if (ga.ga_data != NULL)
+ STRCPY((char *)ga.ga_data + ga.ga_len, tail);
+
+ vim_regfree(regmatch.regprog);
+ }
+
+ ret = vim_strsave(ga.ga_data == NULL ? str : (char_u *)ga.ga_data);
+ ga_clear(&ga);
+ if (p_cpo == empty_option)
+ p_cpo = save_cpo;
+ else
+ /* Darn, evaluating {sub} expression changed the value. */
+ free_string_option(save_cpo);
+
+ return ret;
+}
+
+static void on_job_stdout(RStream *rstream, void *data, bool eof)
+{
+ if (!eof) {
+ on_job_data(rstream, data, eof, "stdout");
+ }
+}
+
+static void on_job_stderr(RStream *rstream, void *data, bool eof)
+{
+ if (!eof) {
+ on_job_data(rstream, data, eof, "stderr");
+ }
+}
+
+static void on_job_exit(Job *job, void *data)
+{
+ apply_job_autocmds(job, data, "exit", NULL);
+}
+
+static void on_job_data(RStream *rstream, void *data, bool eof, char *type)
+{
+ Job *job = data;
+ uint32_t read_count = rstream_available(rstream);
+ char *str = xmalloc(read_count + 1);
+
+ rstream_read(rstream, str, read_count);
+ str[read_count] = NUL;
+ apply_job_autocmds(job, job_data(job), type, str);
+}
+
+static void apply_job_autocmds(Job *job, char *name, char *type, char *str)
+{
+ list_T *list;
+
+ // Create the list which will be set to v:job_data
+ list = list_alloc();
+ list_append_number(list, job_id(job));
+ list_append_string(list, (uint8_t *)type, -1);
+
+ if (str) {
+ listitem_T *str_slot = listitem_alloc();
+ str_slot->li_tv.v_type = VAR_STRING;
+ str_slot->li_tv.v_lock = 0;
+ str_slot->li_tv.vval.v_string = (uint8_t *)str;
+ list_append(list, str_slot);
+ }
+
+ // Update v:job_data for the autocommands
+ set_vim_var_list(VV_JOB_DATA, list);
+ // Call JobActivity autocommands
+ apply_autocmds(EVENT_JOBACTIVITY, (uint8_t *)name, NULL, TRUE, NULL);
+}
+
generated by cgit (git 2.34.1) at 2025-04-28 22:16:33 +0000