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Diffstat (limited to 'src/syntax.c')
| -rw-r--r-- | src/syntax.c | 7818 |
1 files changed, 0 insertions, 7818 deletions
diff --git a/src/syntax.c b/src/syntax.c deleted file mode 100644 index 41128868fc..0000000000 --- a/src/syntax.c +++ /dev/null @@ -1,7818 +0,0 @@ -/* - * 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. - */ - -/* - * syntax.c: code for syntax highlighting - */ - -#include <string.h> -#include <stdlib.h> - -#include "vim.h" -#include "syntax.h" -#include "charset.h" -#include "eval.h" -#include "ex_cmds2.h" -#include "ex_docmd.h" -#include "fileio.h" -#include "fold.h" -#include "hashtab.h" -#include "indent_c.h" -#include "mbyte.h" -#include "memline.h" -#include "memory.h" -#include "message.h" -#include "misc1.h" -#include "misc2.h" -#include "keymap.h" -#include "garray.h" -#include "option.h" -#include "os_unix.h" -#include "path.h" -#include "regexp.h" -#include "screen.h" -#include "term.h" -#include "ui.h" -#include "os/os.h" - -/* - * Structure that stores information about a highlight group. - * The ID of a highlight group is also called group ID. It is the index in - * the highlight_ga array PLUS ONE. - */ -struct hl_group { - char_u *sg_name; /* highlight group name */ - char_u *sg_name_u; /* uppercase of sg_name */ - /* for normal terminals */ - int sg_term; /* "term=" highlighting attributes */ - char_u *sg_start; /* terminal string for start highl */ - char_u *sg_stop; /* terminal string for stop highl */ - int sg_term_attr; /* Screen attr for term mode */ - /* for color terminals */ - int sg_cterm; /* "cterm=" highlighting attr */ - int sg_cterm_bold; /* bold attr was set for light color */ - int sg_cterm_fg; /* terminal fg color number + 1 */ - int sg_cterm_bg; /* terminal bg color number + 1 */ - int sg_cterm_attr; /* Screen attr for color term mode */ - /* Store the sp color name for the GUI or synIDattr() */ - int sg_gui; /* "gui=" highlighting attributes */ - char_u *sg_gui_fg_name; /* GUI foreground color name */ - char_u *sg_gui_bg_name; /* GUI background color name */ - char_u *sg_gui_sp_name; /* GUI special color name */ - int sg_link; /* link to this highlight group ID */ - int sg_set; /* combination of SG_* flags */ - scid_T sg_scriptID; /* script in which the group was last set */ -}; - -#define SG_TERM 1 /* term has been set */ -#define SG_CTERM 2 /* cterm has been set */ -#define SG_GUI 4 /* gui has been set */ -#define SG_LINK 8 /* link has been set */ - -static garray_T highlight_ga; /* highlight groups for 'highlight' option */ - -#define HL_TABLE() ((struct hl_group *)((highlight_ga.ga_data))) - -#define MAX_HL_ID 20000 /* maximum value for a highlight ID. */ - -/* Flags to indicate an additional string for highlight name completion. */ -static int include_none = 0; /* when 1 include "None" */ -static int include_default = 0; /* when 1 include "default" */ -static int include_link = 0; /* when 2 include "link" and "clear" */ - -/* - * The "term", "cterm" and "gui" arguments can be any combination of the - * following names, separated by commas (but no spaces!). - */ -static char *(hl_name_table[]) = -{"bold", "standout", "underline", "undercurl", - "italic", "reverse", "inverse", "NONE"}; -static int hl_attr_table[] = -{HL_BOLD, HL_STANDOUT, HL_UNDERLINE, HL_UNDERCURL, HL_ITALIC, HL_INVERSE, - HL_INVERSE, 0}; - -static int get_attr_entry(garray_T *table, attrentry_T *aep); -static void syn_unadd_group(void); -static void set_hl_attr(int idx); -static void highlight_list_one(int id); -static int highlight_list_arg(int id, int didh, int type, int iarg, - char_u *sarg, - char *name); -static int syn_add_group(char_u *name); -static int syn_list_header(int did_header, int outlen, int id); -static int hl_has_settings(int idx, int check_link); -static void highlight_clear(int idx); - - -/* - * An attribute number is the index in attr_table plus ATTR_OFF. - */ -#define ATTR_OFF (HL_ALL + 1) - - -#define SYN_NAMELEN 50 /* maximum length of a syntax name */ - -/* different types of offsets that are possible */ -#define SPO_MS_OFF 0 /* match start offset */ -#define SPO_ME_OFF 1 /* match end offset */ -#define SPO_HS_OFF 2 /* highl. start offset */ -#define SPO_HE_OFF 3 /* highl. end offset */ -#define SPO_RS_OFF 4 /* region start offset */ -#define SPO_RE_OFF 5 /* region end offset */ -#define SPO_LC_OFF 6 /* leading context offset */ -#define SPO_COUNT 7 - -static char *(spo_name_tab[SPO_COUNT]) = -{"ms=", "me=", "hs=", "he=", "rs=", "re=", "lc="}; - -/* - * The patterns that are being searched for are stored in a syn_pattern. - * A match item consists of one pattern. - * A start/end item consists of n start patterns and m end patterns. - * A start/skip/end item consists of n start patterns, one skip pattern and m - * end patterns. - * For the latter two, the patterns are always consecutive: start-skip-end. - * - * A character offset can be given for the matched text (_m_start and _m_end) - * and for the actually highlighted text (_h_start and _h_end). - */ -typedef struct syn_pattern { - char sp_type; /* see SPTYPE_ defines below */ - char sp_syncing; /* this item used for syncing */ - int sp_flags; /* see HL_ defines below */ - int sp_cchar; /* conceal substitute character */ - struct sp_syn sp_syn; /* struct passed to in_id_list() */ - short sp_syn_match_id; /* highlight group ID of pattern */ - char_u *sp_pattern; /* regexp to match, pattern */ - regprog_T *sp_prog; /* regexp to match, program */ - syn_time_T sp_time; - int sp_ic; /* ignore-case flag for sp_prog */ - short sp_off_flags; /* see below */ - int sp_offsets[SPO_COUNT]; /* offsets */ - short *sp_cont_list; /* cont. group IDs, if non-zero */ - short *sp_next_list; /* next group IDs, if non-zero */ - int sp_sync_idx; /* sync item index (syncing only) */ - int sp_line_id; /* ID of last line where tried */ - int sp_startcol; /* next match in sp_line_id line */ -} synpat_T; - -/* The sp_off_flags are computed like this: - * offset from the start of the matched text: (1 << SPO_XX_OFF) - * offset from the end of the matched text: (1 << (SPO_XX_OFF + SPO_COUNT)) - * When both are present, only one is used. - */ - -#define SPTYPE_MATCH 1 /* match keyword with this group ID */ -#define SPTYPE_START 2 /* match a regexp, start of item */ -#define SPTYPE_END 3 /* match a regexp, end of item */ -#define SPTYPE_SKIP 4 /* match a regexp, skip within item */ - - -#define SYN_ITEMS(buf) ((synpat_T *)((buf)->b_syn_patterns.ga_data)) - -#define NONE_IDX -2 /* value of sp_sync_idx for "NONE" */ - -/* - * Flags for b_syn_sync_flags: - */ -#define SF_CCOMMENT 0x01 /* sync on a C-style comment */ -#define SF_MATCH 0x02 /* sync by matching a pattern */ - -#define SYN_STATE_P(ssp) ((bufstate_T *)((ssp)->ga_data)) - -#define MAXKEYWLEN 80 /* maximum length of a keyword */ - -/* - * The attributes of the syntax item that has been recognized. - */ -static int current_attr = 0; /* attr of current syntax word */ -static int current_id = 0; /* ID of current char for syn_get_id() */ -static int current_trans_id = 0; /* idem, transparency removed */ -static int current_flags = 0; -static int current_seqnr = 0; -static int current_sub_char = 0; - -typedef struct syn_cluster_S { - char_u *scl_name; /* syntax cluster name */ - char_u *scl_name_u; /* uppercase of scl_name */ - short *scl_list; /* IDs in this syntax cluster */ -} syn_cluster_T; - -/* - * Methods of combining two clusters - */ -#define CLUSTER_REPLACE 1 /* replace first list with second */ -#define CLUSTER_ADD 2 /* add second list to first */ -#define CLUSTER_SUBTRACT 3 /* subtract second list from first */ - -#define SYN_CLSTR(buf) ((syn_cluster_T *)((buf)->b_syn_clusters.ga_data)) - -/* - * Syntax group IDs have different types: - * 0 - 19999 normal syntax groups - * 20000 - 20999 ALLBUT indicator (current_syn_inc_tag added) - * 21000 - 21999 TOP indicator (current_syn_inc_tag added) - * 22000 - 22999 CONTAINED indicator (current_syn_inc_tag added) - * 23000 - 32767 cluster IDs (subtract SYNID_CLUSTER for the cluster ID) - */ -#define SYNID_ALLBUT MAX_HL_ID /* syntax group ID for contains=ALLBUT */ -#define SYNID_TOP 21000 /* syntax group ID for contains=TOP */ -#define SYNID_CONTAINED 22000 /* syntax group ID for contains=CONTAINED */ -#define SYNID_CLUSTER 23000 /* first syntax group ID for clusters */ - -#define MAX_SYN_INC_TAG 999 /* maximum before the above overflow */ -#define MAX_CLUSTER_ID (32767 - SYNID_CLUSTER) - -/* - * Annoying Hack(TM): ":syn include" needs this pointer to pass to - * expand_filename(). Most of the other syntax commands don't need it, so - * instead of passing it to them, we stow it here. - */ -static char_u **syn_cmdlinep; - -/* - * Another Annoying Hack(TM): To prevent rules from other ":syn include"'d - * files from leaking into ALLBUT lists, we assign a unique ID to the - * rules in each ":syn include"'d file. - */ -static int current_syn_inc_tag = 0; -static int running_syn_inc_tag = 0; - -/* - * In a hashtable item "hi_key" points to "keyword" in a keyentry. - * This avoids adding a pointer to the hashtable item. - * KE2HIKEY() converts a var pointer to a hashitem key pointer. - * HIKEY2KE() converts a hashitem key pointer to a var pointer. - * HI2KE() converts a hashitem pointer to a var pointer. - */ -static keyentry_T dumkey; -#define KE2HIKEY(kp) ((kp)->keyword) -#define HIKEY2KE(p) ((keyentry_T *)((p) - (dumkey.keyword - (char_u *)&dumkey))) -#define HI2KE(hi) HIKEY2KE((hi)->hi_key) - -/* - * To reduce the time spent in keepend(), remember at which level in the state - * stack the first item with "keepend" is present. When "-1", there is no - * "keepend" on the stack. - */ -static int keepend_level = -1; - -static char msg_no_items[] = N_("No Syntax items defined for this buffer"); - -/* - * For the current state we need to remember more than just the idx. - * When si_m_endpos.lnum is 0, the items other than si_idx are unknown. - * (The end positions have the column number of the next char) - */ -typedef struct state_item { - int si_idx; /* index of syntax pattern or - KEYWORD_IDX */ - int si_id; /* highlight group ID for keywords */ - int si_trans_id; /* idem, transparency removed */ - int si_m_lnum; /* lnum of the match */ - int si_m_startcol; /* starting column of the match */ - lpos_T si_m_endpos; /* just after end posn of the match */ - lpos_T si_h_startpos; /* start position of the highlighting */ - lpos_T si_h_endpos; /* end position of the highlighting */ - lpos_T si_eoe_pos; /* end position of end pattern */ - int si_end_idx; /* group ID for end pattern or zero */ - int si_ends; /* if match ends before si_m_endpos */ - int si_attr; /* attributes in this state */ - long si_flags; /* HL_HAS_EOL flag in this state, and - * HL_SKIP* for si_next_list */ - int si_seqnr; /* sequence number */ - int si_cchar; /* substitution character for conceal */ - short *si_cont_list; /* list of contained groups */ - short *si_next_list; /* nextgroup IDs after this item ends */ - reg_extmatch_T *si_extmatch; /* \z(...\) matches from start - * pattern */ -} stateitem_T; - -#define KEYWORD_IDX -1 /* value of si_idx for keywords */ -#define ID_LIST_ALL (short *)-1 /* valid of si_cont_list for containing all - but contained groups */ - -static int next_seqnr = 0; /* value to use for si_seqnr */ - -/* - * Struct to reduce the number of arguments to get_syn_options(), it's used - * very often. - */ -typedef struct { - int flags; /* flags for contained and transparent */ - int keyword; /* TRUE for ":syn keyword" */ - int *sync_idx; /* syntax item for "grouphere" argument, NULL - if not allowed */ - char has_cont_list; /* TRUE if "cont_list" can be used */ - short *cont_list; /* group IDs for "contains" argument */ - short *cont_in_list; /* group IDs for "containedin" argument */ - short *next_list; /* group IDs for "nextgroup" argument */ -} syn_opt_arg_T; - -/* - * The next possible match in the current line for any pattern is remembered, - * to avoid having to try for a match in each column. - * If next_match_idx == -1, not tried (in this line) yet. - * If next_match_col == MAXCOL, no match found in this line. - * (All end positions have the column of the char after the end) - */ -static int next_match_col; /* column for start of next match */ -static lpos_T next_match_m_endpos; /* position for end of next match */ -static lpos_T next_match_h_startpos; /* pos. for highl. start of next match */ -static lpos_T next_match_h_endpos; /* pos. for highl. end of next match */ -static int next_match_idx; /* index of matched item */ -static long next_match_flags; /* flags for next match */ -static lpos_T next_match_eos_pos; /* end of start pattn (start region) */ -static lpos_T next_match_eoe_pos; /* pos. for end of end pattern */ -static int next_match_end_idx; /* ID of group for end pattn or zero */ -static reg_extmatch_T *next_match_extmatch = NULL; - -/* - * A state stack is an array of integers or stateitem_T, stored in a - * garray_T. A state stack is invalid if it's itemsize entry is zero. - */ -#define INVALID_STATE(ssp) ((ssp)->ga_itemsize == 0) -#define VALID_STATE(ssp) ((ssp)->ga_itemsize != 0) - -/* - * The current state (within the line) of the recognition engine. - * When current_state.ga_itemsize is 0 the current state is invalid. - */ -static win_T *syn_win; /* current window for highlighting */ -static buf_T *syn_buf; /* current buffer for highlighting */ -static synblock_T *syn_block; /* current buffer for highlighting */ -static linenr_T current_lnum = 0; /* lnum of current state */ -static colnr_T current_col = 0; /* column of current state */ -static int current_state_stored = 0; /* TRUE if stored current state - * after setting current_finished */ -static int current_finished = 0; /* current line has been finished */ -static garray_T current_state /* current stack of state_items */ - = {0, 0, 0, 0, NULL}; -static short *current_next_list = NULL; /* when non-zero, nextgroup list */ -static int current_next_flags = 0; /* flags for current_next_list */ -static int current_line_id = 0; /* unique number for current line */ - -#define CUR_STATE(idx) ((stateitem_T *)(current_state.ga_data))[idx] - -static void syn_sync(win_T *wp, linenr_T lnum, synstate_T *last_valid); -static int syn_match_linecont(linenr_T lnum); -static void syn_start_line(void); -static void syn_update_ends(int startofline); -static void syn_stack_alloc(void); -static int syn_stack_cleanup(void); -static void syn_stack_free_entry(synblock_T *block, synstate_T *p); -static synstate_T *syn_stack_find_entry(linenr_T lnum); -static synstate_T *store_current_state(void); -static void load_current_state(synstate_T *from); -static void invalidate_current_state(void); -static int syn_stack_equal(synstate_T *sp); -static void validate_current_state(void); -static int syn_finish_line(int syncing); -static int syn_current_attr(int syncing, int displaying, int *can_spell, - int keep_state); -static int did_match_already(int idx, garray_T *gap); -static stateitem_T *push_next_match(stateitem_T *cur_si); -static void check_state_ends(void); -static void update_si_attr(int idx); -static void check_keepend(void); -static void update_si_end(stateitem_T *sip, int startcol, int force); -static short *copy_id_list(short *list); -static int in_id_list(stateitem_T *item, short *cont_list, - struct sp_syn *ssp, - int contained); -static void push_current_state(int idx); -static void pop_current_state(void); -static void syn_clear_time(syn_time_T *tt); -static void syntime_clear(void); -static int syn_compare_syntime(const void *v1, const void *v2); -static void syntime_report(void); -static int syn_time_on = FALSE; -# define IF_SYN_TIME(p) (p) - -static void syn_stack_apply_changes_block(synblock_T *block, buf_T *buf); -static void find_endpos(int idx, lpos_T *startpos, lpos_T *m_endpos, - lpos_T *hl_endpos, long *flagsp, lpos_T *end_endpos, - int *end_idx, reg_extmatch_T *start_ext); -static void clear_syn_state(synstate_T *p); -static void clear_current_state(void); - -static void limit_pos(lpos_T *pos, lpos_T *limit); -static void limit_pos_zero(lpos_T *pos, lpos_T *limit); -static void syn_add_end_off(lpos_T *result, regmmatch_T *regmatch, - synpat_T *spp, int idx, - int extra); -static void syn_add_start_off(lpos_T *result, regmmatch_T *regmatch, - synpat_T *spp, int idx, - int extra); -static char_u *syn_getcurline(void); -static int syn_regexec(regmmatch_T *rmp, linenr_T lnum, colnr_T col, - syn_time_T *st); -static int check_keyword_id(char_u *line, int startcol, int *endcol, - long *flags, short **next_list, - stateitem_T *cur_si, - int *ccharp); -static keyentry_T *match_keyword(char_u *keyword, hashtab_T *ht, - stateitem_T *cur_si); -static void syn_cmd_case(exarg_T *eap, int syncing); -static void syn_cmd_spell(exarg_T *eap, int syncing); -static void syntax_sync_clear(void); -static void syn_remove_pattern(synblock_T *block, int idx); -static void syn_clear_pattern(synblock_T *block, int i); -static void syn_clear_cluster(synblock_T *block, int i); -static void syn_cmd_clear(exarg_T *eap, int syncing); -static void syn_cmd_conceal(exarg_T *eap, int syncing); -static void syn_clear_one(int id, int syncing); -static void syn_cmd_on(exarg_T *eap, int syncing); -static void syn_cmd_enable(exarg_T *eap, int syncing); -static void syn_cmd_reset(exarg_T *eap, int syncing); -static void syn_cmd_manual(exarg_T *eap, int syncing); -static void syn_cmd_off(exarg_T *eap, int syncing); -static void syn_cmd_onoff(exarg_T *eap, char *name); -static void syn_cmd_list(exarg_T *eap, int syncing); -static void syn_lines_msg(void); -static void syn_match_msg(void); -static void syn_stack_free_block(synblock_T *block); -static void syn_list_one(int id, int syncing, int link_only); -static void syn_list_cluster(int id); -static void put_id_list(char_u *name, short *list, int attr); -static void put_pattern(char *s, int c, synpat_T *spp, int attr); -static int syn_list_keywords(int id, hashtab_T *ht, int did_header, - int attr); -static void syn_clear_keyword(int id, hashtab_T *ht); -static void clear_keywtab(hashtab_T *ht); -static void add_keyword(char_u *name, int id, int flags, - short *cont_in_list, short *next_list, - int conceal_char); -static char_u *get_group_name(char_u *arg, char_u **name_end); -static char_u *get_syn_options(char_u *arg, syn_opt_arg_T *opt, - int *conceal_char); -static void syn_cmd_include(exarg_T *eap, int syncing); -static void syn_cmd_keyword(exarg_T *eap, int syncing); -static void syn_cmd_match(exarg_T *eap, int syncing); -static void syn_cmd_region(exarg_T *eap, int syncing); -static int syn_compare_stub(const void *v1, const void *v2); -static void syn_cmd_cluster(exarg_T *eap, int syncing); -static int syn_scl_name2id(char_u *name); -static int syn_scl_namen2id(char_u *linep, int len); -static int syn_check_cluster(char_u *pp, int len); -static int syn_add_cluster(char_u *name); -static void init_syn_patterns(void); -static char_u *get_syn_pattern(char_u *arg, synpat_T *ci); -static void syn_cmd_sync(exarg_T *eap, int syncing); -static int get_id_list(char_u **arg, int keylen, short **list); -static void syn_combine_list(short **clstr1, short **clstr2, - int list_op); -static void syn_incl_toplevel(int id, int *flagsp); - -/* - * Start the syntax recognition for a line. This function is normally called - * from the screen updating, once for each displayed line. - * The buffer is remembered in syn_buf, because get_syntax_attr() doesn't get - * it. Careful: curbuf and curwin are likely to point to another buffer and - * window. - */ -void syntax_start(win_T *wp, linenr_T lnum) -{ - synstate_T *p; - synstate_T *last_valid = NULL; - synstate_T *last_min_valid = NULL; - synstate_T *sp, *prev = NULL; - linenr_T parsed_lnum; - linenr_T first_stored; - int dist; - static int changedtick = 0; /* remember the last change ID */ - - current_sub_char = NUL; - - /* - * After switching buffers, invalidate current_state. - * Also do this when a change was made, the current state may be invalid - * then. - */ - if (syn_block != wp->w_s || changedtick != syn_buf->b_changedtick) { - invalidate_current_state(); - syn_buf = wp->w_buffer; - syn_block = wp->w_s; - } - changedtick = syn_buf->b_changedtick; - syn_win = wp; - - /* - * Allocate syntax stack when needed. - */ - syn_stack_alloc(); - if (syn_block->b_sst_array == NULL) - return; /* out of memory */ - syn_block->b_sst_lasttick = display_tick; - - /* - * If the state of the end of the previous line is useful, store it. - */ - if (VALID_STATE(¤t_state) - && current_lnum < lnum - && current_lnum < syn_buf->b_ml.ml_line_count) { - (void)syn_finish_line(FALSE); - if (!current_state_stored) { - ++current_lnum; - (void)store_current_state(); - } - - /* - * If the current_lnum is now the same as "lnum", keep the current - * state (this happens very often!). Otherwise invalidate - * current_state and figure it out below. - */ - if (current_lnum != lnum) - invalidate_current_state(); - } else - invalidate_current_state(); - - /* - * Try to synchronize from a saved state in b_sst_array[]. - * Only do this if lnum is not before and not to far beyond a saved state. - */ - if (INVALID_STATE(¤t_state) && syn_block->b_sst_array != NULL) { - /* Find last valid saved state before start_lnum. */ - for (p = syn_block->b_sst_first; p != NULL; p = p->sst_next) { - if (p->sst_lnum > lnum) - break; - if (p->sst_lnum <= lnum && p->sst_change_lnum == 0) { - last_valid = p; - if (p->sst_lnum >= lnum - syn_block->b_syn_sync_minlines) - last_min_valid = p; - } - } - if (last_min_valid != NULL) - load_current_state(last_min_valid); - } - - /* - * If "lnum" is before or far beyond a line with a saved state, need to - * re-synchronize. - */ - if (INVALID_STATE(¤t_state)) { - syn_sync(wp, lnum, last_valid); - if (current_lnum == 1) - /* First line is always valid, no matter "minlines". */ - first_stored = 1; - else - /* Need to parse "minlines" lines before state can be considered - * valid to store. */ - first_stored = current_lnum + syn_block->b_syn_sync_minlines; - } else - first_stored = current_lnum; - - /* - * Advance from the sync point or saved state until the current line. - * Save some entries for syncing with later on. - */ - if (syn_block->b_sst_len <= Rows) - dist = 999999; - else - dist = syn_buf->b_ml.ml_line_count / (syn_block->b_sst_len - Rows) + 1; - while (current_lnum < lnum) { - syn_start_line(); - (void)syn_finish_line(FALSE); - ++current_lnum; - - /* If we parsed at least "minlines" lines or started at a valid - * state, the current state is considered valid. */ - if (current_lnum >= first_stored) { - /* Check if the saved state entry is for the current line and is - * equal to the current state. If so, then validate all saved - * states that depended on a change before the parsed line. */ - if (prev == NULL) - prev = syn_stack_find_entry(current_lnum - 1); - if (prev == NULL) - sp = syn_block->b_sst_first; - else - sp = prev; - while (sp != NULL && sp->sst_lnum < current_lnum) - sp = sp->sst_next; - if (sp != NULL - && sp->sst_lnum == current_lnum - && syn_stack_equal(sp)) { - parsed_lnum = current_lnum; - prev = sp; - while (sp != NULL && sp->sst_change_lnum <= parsed_lnum) { - if (sp->sst_lnum <= lnum) - /* valid state before desired line, use this one */ - prev = sp; - else if (sp->sst_change_lnum == 0) - /* past saved states depending on change, break here. */ - break; - sp->sst_change_lnum = 0; - sp = sp->sst_next; - } - load_current_state(prev); - } - /* Store the state at this line when it's the first one, the line - * where we start parsing, or some distance from the previously - * saved state. But only when parsed at least 'minlines'. */ - else if (prev == NULL - || current_lnum == lnum - || current_lnum >= prev->sst_lnum + dist) - prev = store_current_state(); - } - - /* This can take a long time: break when CTRL-C pressed. The current - * state will be wrong then. */ - line_breakcheck(); - if (got_int) { - current_lnum = lnum; - break; - } - } - - syn_start_line(); -} - -/* - * We cannot simply discard growarrays full of state_items or buf_states; we - * have to manually release their extmatch pointers first. - */ -static void clear_syn_state(synstate_T *p) -{ - int i; - garray_T *gap; - - if (p->sst_stacksize > SST_FIX_STATES) { - gap = &(p->sst_union.sst_ga); - for (i = 0; i < gap->ga_len; i++) - unref_extmatch(SYN_STATE_P(gap)[i].bs_extmatch); - ga_clear(gap); - } else { - for (i = 0; i < p->sst_stacksize; i++) - unref_extmatch(p->sst_union.sst_stack[i].bs_extmatch); - } -} - -/* - * Cleanup the current_state stack. - */ -static void clear_current_state(void) -{ - int i; - stateitem_T *sip; - - sip = (stateitem_T *)(current_state.ga_data); - for (i = 0; i < current_state.ga_len; i++) - unref_extmatch(sip[i].si_extmatch); - ga_clear(¤t_state); -} - -/* - * Try to find a synchronisation point for line "lnum". - * - * This sets current_lnum and the current state. One of three methods is - * used: - * 1. Search backwards for the end of a C-comment. - * 2. Search backwards for given sync patterns. - * 3. Simply start on a given number of lines above "lnum". - */ -static void syn_sync(win_T *wp, linenr_T start_lnum, synstate_T *last_valid) -{ - buf_T *curbuf_save; - win_T *curwin_save; - pos_T cursor_save; - int idx; - linenr_T lnum; - linenr_T end_lnum; - linenr_T break_lnum; - int had_sync_point; - stateitem_T *cur_si; - synpat_T *spp; - char_u *line; - int found_flags = 0; - int found_match_idx = 0; - linenr_T found_current_lnum = 0; - int found_current_col= 0; - lpos_T found_m_endpos; - colnr_T prev_current_col; - - /* - * Clear any current state that might be hanging around. - */ - invalidate_current_state(); - - /* - * Start at least "minlines" back. Default starting point for parsing is - * there. - * Start further back, to avoid that scrolling backwards will result in - * resyncing for every line. Now it resyncs only one out of N lines, - * where N is minlines * 1.5, or minlines * 2 if minlines is small. - * Watch out for overflow when minlines is MAXLNUM. - */ - if (syn_block->b_syn_sync_minlines > start_lnum) - start_lnum = 1; - else { - if (syn_block->b_syn_sync_minlines == 1) - lnum = 1; - else if (syn_block->b_syn_sync_minlines < 10) - lnum = syn_block->b_syn_sync_minlines * 2; - else - lnum = syn_block->b_syn_sync_minlines * 3 / 2; - if (syn_block->b_syn_sync_maxlines != 0 - && lnum > syn_block->b_syn_sync_maxlines) - lnum = syn_block->b_syn_sync_maxlines; - if (lnum >= start_lnum) - start_lnum = 1; - else - start_lnum -= lnum; - } - current_lnum = start_lnum; - - /* - * 1. Search backwards for the end of a C-style comment. - */ - if (syn_block->b_syn_sync_flags & SF_CCOMMENT) { - /* Need to make syn_buf the current buffer for a moment, to be able to - * use find_start_comment(). */ - curwin_save = curwin; - curwin = wp; - curbuf_save = curbuf; - curbuf = syn_buf; - - /* - * Skip lines that end in a backslash. - */ - for (; start_lnum > 1; --start_lnum) { - line = ml_get(start_lnum - 1); - if (*line == NUL || *(line + STRLEN(line) - 1) != '\\') - break; - } - current_lnum = start_lnum; - - /* set cursor to start of search */ - cursor_save = wp->w_cursor; - wp->w_cursor.lnum = start_lnum; - wp->w_cursor.col = 0; - - /* - * If the line is inside a comment, need to find the syntax item that - * defines the comment. - * Restrict the search for the end of a comment to b_syn_sync_maxlines. - */ - if (find_start_comment((int)syn_block->b_syn_sync_maxlines) != NULL) { - for (idx = syn_block->b_syn_patterns.ga_len; --idx >= 0; ) - if (SYN_ITEMS(syn_block)[idx].sp_syn.id - == syn_block->b_syn_sync_id - && SYN_ITEMS(syn_block)[idx].sp_type == SPTYPE_START) { - validate_current_state(); - push_current_state(idx); - update_si_attr(current_state.ga_len - 1); - break; - } - } - - /* restore cursor and buffer */ - wp->w_cursor = cursor_save; - curwin = curwin_save; - curbuf = curbuf_save; - } - /* - * 2. Search backwards for given sync patterns. - */ - else if (syn_block->b_syn_sync_flags & SF_MATCH) { - if (syn_block->b_syn_sync_maxlines != 0 - && start_lnum > syn_block->b_syn_sync_maxlines) - break_lnum = start_lnum - syn_block->b_syn_sync_maxlines; - else - break_lnum = 0; - - found_m_endpos.lnum = 0; - found_m_endpos.col = 0; - end_lnum = start_lnum; - lnum = start_lnum; - while (--lnum > break_lnum) { - /* This can take a long time: break when CTRL-C pressed. */ - line_breakcheck(); - if (got_int) { - invalidate_current_state(); - current_lnum = start_lnum; - break; - } - - /* Check if we have run into a valid saved state stack now. */ - if (last_valid != NULL && lnum == last_valid->sst_lnum) { - load_current_state(last_valid); - break; - } - - /* - * Check if the previous line has the line-continuation pattern. - */ - if (lnum > 1 && syn_match_linecont(lnum - 1)) - continue; - - /* - * Start with nothing on the state stack - */ - validate_current_state(); - - for (current_lnum = lnum; current_lnum < end_lnum; ++current_lnum) { - syn_start_line(); - for (;; ) { - had_sync_point = syn_finish_line(TRUE); - /* - * When a sync point has been found, remember where, and - * continue to look for another one, further on in the line. - */ - if (had_sync_point && current_state.ga_len) { - cur_si = &CUR_STATE(current_state.ga_len - 1); - if (cur_si->si_m_endpos.lnum > start_lnum) { - /* ignore match that goes to after where started */ - current_lnum = end_lnum; - break; - } - if (cur_si->si_idx < 0) { - /* Cannot happen? */ - found_flags = 0; - found_match_idx = KEYWORD_IDX; - } else { - spp = &(SYN_ITEMS(syn_block)[cur_si->si_idx]); - found_flags = spp->sp_flags; - found_match_idx = spp->sp_sync_idx; - } - found_current_lnum = current_lnum; - found_current_col = current_col; - found_m_endpos = cur_si->si_m_endpos; - /* - * Continue after the match (be aware of a zero-length - * match). - */ - if (found_m_endpos.lnum > current_lnum) { - current_lnum = found_m_endpos.lnum; - current_col = found_m_endpos.col; - if (current_lnum >= end_lnum) - break; - } else if (found_m_endpos.col > current_col) - current_col = found_m_endpos.col; - else - ++current_col; - - /* syn_current_attr() will have skipped the check for - * an item that ends here, need to do that now. Be - * careful not to go past the NUL. */ - prev_current_col = current_col; - if (syn_getcurline()[current_col] != NUL) - ++current_col; - check_state_ends(); - current_col = prev_current_col; - } else - break; - } - } - - /* - * If a sync point was encountered, break here. - */ - if (found_flags) { - /* - * Put the item that was specified by the sync point on the - * state stack. If there was no item specified, make the - * state stack empty. - */ - clear_current_state(); - if (found_match_idx >= 0) { - push_current_state(found_match_idx); - update_si_attr(current_state.ga_len - 1); - } - - /* - * When using "grouphere", continue from the sync point - * match, until the end of the line. Parsing starts at - * the next line. - * For "groupthere" the parsing starts at start_lnum. - */ - if (found_flags & HL_SYNC_HERE) { - if (current_state.ga_len) { - cur_si = &CUR_STATE(current_state.ga_len - 1); - cur_si->si_h_startpos.lnum = found_current_lnum; - cur_si->si_h_startpos.col = found_current_col; - update_si_end(cur_si, (int)current_col, TRUE); - check_keepend(); - } - current_col = found_m_endpos.col; - current_lnum = found_m_endpos.lnum; - (void)syn_finish_line(FALSE); - ++current_lnum; - } else - current_lnum = start_lnum; - - break; - } - - end_lnum = lnum; - invalidate_current_state(); - } - - /* Ran into start of the file or exceeded maximum number of lines */ - if (lnum <= break_lnum) { - invalidate_current_state(); - current_lnum = break_lnum + 1; - } - } - - validate_current_state(); -} - -/* - * Return TRUE if the line-continuation pattern matches in line "lnum". - */ -static int syn_match_linecont(linenr_T lnum) -{ - regmmatch_T regmatch; - - if (syn_block->b_syn_linecont_prog != NULL) { - regmatch.rmm_ic = syn_block->b_syn_linecont_ic; - regmatch.regprog = syn_block->b_syn_linecont_prog; - return syn_regexec(®match, lnum, (colnr_T)0, - IF_SYN_TIME(&syn_block->b_syn_linecont_time)); - } - return FALSE; -} - -/* - * Prepare the current state for the start of a line. - */ -static void syn_start_line(void) -{ - current_finished = FALSE; - current_col = 0; - - /* - * Need to update the end of a start/skip/end that continues from the - * previous line and regions that have "keepend". - */ - if (current_state.ga_len > 0) { - syn_update_ends(TRUE); - check_state_ends(); - } - - next_match_idx = -1; - ++current_line_id; -} - -/* - * Check for items in the stack that need their end updated. - * When "startofline" is TRUE the last item is always updated. - * When "startofline" is FALSE the item with "keepend" is forcefully updated. - */ -static void syn_update_ends(int startofline) -{ - stateitem_T *cur_si; - int i; - int seen_keepend; - - if (startofline) { - /* Check for a match carried over from a previous line with a - * contained region. The match ends as soon as the region ends. */ - for (i = 0; i < current_state.ga_len; ++i) { - cur_si = &CUR_STATE(i); - if (cur_si->si_idx >= 0 - && (SYN_ITEMS(syn_block)[cur_si->si_idx]).sp_type - == SPTYPE_MATCH - && cur_si->si_m_endpos.lnum < current_lnum) { - cur_si->si_flags |= HL_MATCHCONT; - cur_si->si_m_endpos.lnum = 0; - cur_si->si_m_endpos.col = 0; - cur_si->si_h_endpos = cur_si->si_m_endpos; - cur_si->si_ends = TRUE; - } - } - } - - /* - * Need to update the end of a start/skip/end that continues from the - * previous line. And regions that have "keepend", because they may - * influence contained items. If we've just removed "extend" - * (startofline == 0) then we should update ends of normal regions - * contained inside "keepend" because "extend" could have extended - * these "keepend" regions as well as contained normal regions. - * Then check for items ending in column 0. - */ - i = current_state.ga_len - 1; - if (keepend_level >= 0) - for (; i > keepend_level; --i) - if (CUR_STATE(i).si_flags & HL_EXTEND) - break; - - seen_keepend = FALSE; - for (; i < current_state.ga_len; ++i) { - cur_si = &CUR_STATE(i); - if ((cur_si->si_flags & HL_KEEPEND) - || (seen_keepend && !startofline) - || (i == current_state.ga_len - 1 && startofline)) { - cur_si->si_h_startpos.col = 0; /* start highl. in col 0 */ - cur_si->si_h_startpos.lnum = current_lnum; - - if (!(cur_si->si_flags & HL_MATCHCONT)) - update_si_end(cur_si, (int)current_col, !startofline); - - if (!startofline && (cur_si->si_flags & HL_KEEPEND)) - seen_keepend = TRUE; - } - } - check_keepend(); -} - -/**************************************** - * Handling of the state stack cache. - */ - -/* - * EXPLANATION OF THE SYNTAX STATE STACK CACHE - * - * To speed up syntax highlighting, the state stack for the start of some - * lines is cached. These entries can be used to start parsing at that point. - * - * The stack is kept in b_sst_array[] for each buffer. There is a list of - * valid entries. b_sst_first points to the first one, then follow sst_next. - * The entries are sorted on line number. The first entry is often for line 2 - * (line 1 always starts with an empty stack). - * There is also a list for free entries. This construction is used to avoid - * having to allocate and free memory blocks too often. - * - * When making changes to the buffer, this is logged in b_mod_*. When calling - * update_screen() to update the display, it will call - * syn_stack_apply_changes() for each displayed buffer to adjust the cached - * entries. The entries which are inside the changed area are removed, - * because they must be recomputed. Entries below the changed have their line - * number adjusted for deleted/inserted lines, and have their sst_change_lnum - * set to indicate that a check must be made if the changed lines would change - * the cached entry. - * - * When later displaying lines, an entry is stored for each line. Displayed - * lines are likely to be displayed again, in which case the state at the - * start of the line is needed. - * For not displayed lines, an entry is stored for every so many lines. These - * entries will be used e.g., when scrolling backwards. The distance between - * entries depends on the number of lines in the buffer. For small buffers - * the distance is fixed at SST_DIST, for large buffers there is a fixed - * number of entries SST_MAX_ENTRIES, and the distance is computed. - */ - -static void syn_stack_free_block(synblock_T *block) -{ - synstate_T *p; - - if (block->b_sst_array != NULL) { - for (p = block->b_sst_first; p != NULL; p = p->sst_next) - clear_syn_state(p); - free(block->b_sst_array); - block->b_sst_array = NULL; - block->b_sst_len = 0; - } -} -/* - * Free b_sst_array[] for buffer "buf". - * Used when syntax items changed to force resyncing everywhere. - */ -void syn_stack_free_all(synblock_T *block) -{ - win_T *wp; - - syn_stack_free_block(block); - - - /* When using "syntax" fold method, must update all folds. */ - FOR_ALL_WINDOWS(wp) - { - if (wp->w_s == block && foldmethodIsSyntax(wp)) - foldUpdateAll(wp); - } -} - -/* - * Allocate the syntax state stack for syn_buf when needed. - * If the number of entries in b_sst_array[] is much too big or a bit too - * small, reallocate it. - * Also used to allocate b_sst_array[] for the first time. - */ -static void syn_stack_alloc(void) -{ - long len; - synstate_T *to, *from; - synstate_T *sstp; - - len = syn_buf->b_ml.ml_line_count / SST_DIST + Rows * 2; - if (len < SST_MIN_ENTRIES) - len = SST_MIN_ENTRIES; - else if (len > SST_MAX_ENTRIES) - len = SST_MAX_ENTRIES; - if (syn_block->b_sst_len > len * 2 || syn_block->b_sst_len < len) { - /* Allocate 50% too much, to avoid reallocating too often. */ - len = syn_buf->b_ml.ml_line_count; - len = (len + len / 2) / SST_DIST + Rows * 2; - if (len < SST_MIN_ENTRIES) - len = SST_MIN_ENTRIES; - else if (len > SST_MAX_ENTRIES) - len = SST_MAX_ENTRIES; - - if (syn_block->b_sst_array != NULL) { - /* When shrinking the array, cleanup the existing stack. - * Make sure that all valid entries fit in the new array. */ - while (syn_block->b_sst_len - syn_block->b_sst_freecount + 2 > len - && syn_stack_cleanup()) - ; - if (len < syn_block->b_sst_len - syn_block->b_sst_freecount + 2) - len = syn_block->b_sst_len - syn_block->b_sst_freecount + 2; - } - - assert(len >= 0); - sstp = xcalloc(len, sizeof(synstate_T)); - - to = sstp - 1; - if (syn_block->b_sst_array != NULL) { - /* Move the states from the old array to the new one. */ - for (from = syn_block->b_sst_first; from != NULL; - from = from->sst_next) { - ++to; - *to = *from; - to->sst_next = to + 1; - } - } - if (to != sstp - 1) { - to->sst_next = NULL; - syn_block->b_sst_first = sstp; - syn_block->b_sst_freecount = len - (int)(to - sstp) - 1; - } else { - syn_block->b_sst_first = NULL; - syn_block->b_sst_freecount = len; - } - - /* Create the list of free entries. */ - syn_block->b_sst_firstfree = to + 1; - while (++to < sstp + len) - to->sst_next = to + 1; - (sstp + len - 1)->sst_next = NULL; - - free(syn_block->b_sst_array); - syn_block->b_sst_array = sstp; - syn_block->b_sst_len = len; - } -} - -/* - * Check for changes in a buffer to affect stored syntax states. Uses the - * b_mod_* fields. - * Called from update_screen(), before screen is being updated, once for each - * displayed buffer. - */ -void syn_stack_apply_changes(buf_T *buf) -{ - win_T *wp; - - syn_stack_apply_changes_block(&buf->b_s, buf); - - FOR_ALL_WINDOWS(wp) - { - if ((wp->w_buffer == buf) && (wp->w_s != &buf->b_s)) - syn_stack_apply_changes_block(wp->w_s, buf); - } -} - -static void syn_stack_apply_changes_block(synblock_T *block, buf_T *buf) -{ - synstate_T *p, *prev, *np; - linenr_T n; - - if (block->b_sst_array == NULL) /* nothing to do */ - return; - - prev = NULL; - for (p = block->b_sst_first; p != NULL; ) { - if (p->sst_lnum + block->b_syn_sync_linebreaks > buf->b_mod_top) { - n = p->sst_lnum + buf->b_mod_xlines; - if (n <= buf->b_mod_bot) { - /* this state is inside the changed area, remove it */ - np = p->sst_next; - if (prev == NULL) - block->b_sst_first = np; - else - prev->sst_next = np; - syn_stack_free_entry(block, p); - p = np; - continue; - } - /* This state is below the changed area. Remember the line - * that needs to be parsed before this entry can be made valid - * again. */ - if (p->sst_change_lnum != 0 && p->sst_change_lnum > buf->b_mod_top) { - if (p->sst_change_lnum + buf->b_mod_xlines > buf->b_mod_top) - p->sst_change_lnum += buf->b_mod_xlines; - else - p->sst_change_lnum = buf->b_mod_top; - } - if (p->sst_change_lnum == 0 - || p->sst_change_lnum < buf->b_mod_bot) - p->sst_change_lnum = buf->b_mod_bot; - - p->sst_lnum = n; - } - prev = p; - p = p->sst_next; - } -} - -/* - * Reduce the number of entries in the state stack for syn_buf. - * Returns TRUE if at least one entry was freed. - */ -static int syn_stack_cleanup(void) -{ - synstate_T *p, *prev; - disptick_T tick; - int above; - int dist; - int retval = FALSE; - - if (syn_block->b_sst_array == NULL || syn_block->b_sst_first == NULL) - return retval; - - /* Compute normal distance between non-displayed entries. */ - if (syn_block->b_sst_len <= Rows) - dist = 999999; - else - dist = syn_buf->b_ml.ml_line_count / (syn_block->b_sst_len - Rows) + 1; - - /* - * Go through the list to find the "tick" for the oldest entry that can - * be removed. Set "above" when the "tick" for the oldest entry is above - * "b_sst_lasttick" (the display tick wraps around). - */ - tick = syn_block->b_sst_lasttick; - above = FALSE; - prev = syn_block->b_sst_first; - for (p = prev->sst_next; p != NULL; prev = p, p = p->sst_next) { - if (prev->sst_lnum + dist > p->sst_lnum) { - if (p->sst_tick > syn_block->b_sst_lasttick) { - if (!above || p->sst_tick < tick) - tick = p->sst_tick; - above = TRUE; - } else if (!above && p->sst_tick < tick) - tick = p->sst_tick; - } - } - - /* - * Go through the list to make the entries for the oldest tick at an - * interval of several lines. - */ - prev = syn_block->b_sst_first; - for (p = prev->sst_next; p != NULL; prev = p, p = p->sst_next) { - if (p->sst_tick == tick && prev->sst_lnum + dist > p->sst_lnum) { - /* Move this entry from used list to free list */ - prev->sst_next = p->sst_next; - syn_stack_free_entry(syn_block, p); - p = prev; - retval = TRUE; - } - } - return retval; -} - -/* - * Free the allocated memory for a syn_state item. - * Move the entry into the free list. - */ -static void syn_stack_free_entry(synblock_T *block, synstate_T *p) -{ - clear_syn_state(p); - p->sst_next = block->b_sst_firstfree; - block->b_sst_firstfree = p; - ++block->b_sst_freecount; -} - -/* - * Find an entry in the list of state stacks at or before "lnum". - * Returns NULL when there is no entry or the first entry is after "lnum". - */ -static synstate_T *syn_stack_find_entry(linenr_T lnum) -{ - synstate_T *p, *prev; - - prev = NULL; - for (p = syn_block->b_sst_first; p != NULL; prev = p, p = p->sst_next) { - if (p->sst_lnum == lnum) - return p; - if (p->sst_lnum > lnum) - break; - } - return prev; -} - -/* - * Try saving the current state in b_sst_array[]. - * The current state must be valid for the start of the current_lnum line! - */ -static synstate_T *store_current_state(void) -{ - int i; - synstate_T *p; - bufstate_T *bp; - stateitem_T *cur_si; - synstate_T *sp = syn_stack_find_entry(current_lnum); - - /* - * If the current state contains a start or end pattern that continues - * from the previous line, we can't use it. Don't store it then. - */ - for (i = current_state.ga_len - 1; i >= 0; --i) { - cur_si = &CUR_STATE(i); - if (cur_si->si_h_startpos.lnum >= current_lnum - || cur_si->si_m_endpos.lnum >= current_lnum - || cur_si->si_h_endpos.lnum >= current_lnum - || (cur_si->si_end_idx - && cur_si->si_eoe_pos.lnum >= current_lnum)) - break; - } - if (i >= 0) { - if (sp != NULL) { - /* find "sp" in the list and remove it */ - if (syn_block->b_sst_first == sp) - /* it's the first entry */ - syn_block->b_sst_first = sp->sst_next; - else { - /* find the entry just before this one to adjust sst_next */ - for (p = syn_block->b_sst_first; p != NULL; p = p->sst_next) - if (p->sst_next == sp) - break; - if (p != NULL) /* just in case */ - p->sst_next = sp->sst_next; - } - syn_stack_free_entry(syn_block, sp); - sp = NULL; - } - } else if (sp == NULL || sp->sst_lnum != current_lnum) { - /* - * Add a new entry - */ - /* If no free items, cleanup the array first. */ - if (syn_block->b_sst_freecount == 0) { - (void)syn_stack_cleanup(); - /* "sp" may have been moved to the freelist now */ - sp = syn_stack_find_entry(current_lnum); - } - /* Still no free items? Must be a strange problem... */ - if (syn_block->b_sst_freecount == 0) - sp = NULL; - else { - /* Take the first item from the free list and put it in the used - * list, after *sp */ - p = syn_block->b_sst_firstfree; - syn_block->b_sst_firstfree = p->sst_next; - --syn_block->b_sst_freecount; - if (sp == NULL) { - /* Insert in front of the list */ - p->sst_next = syn_block->b_sst_first; - syn_block->b_sst_first = p; - } else { - /* insert in list after *sp */ - p->sst_next = sp->sst_next; - sp->sst_next = p; - } - sp = p; - sp->sst_stacksize = 0; - sp->sst_lnum = current_lnum; - } - } - if (sp != NULL) { - /* When overwriting an existing state stack, clear it first */ - clear_syn_state(sp); - sp->sst_stacksize = current_state.ga_len; - if (current_state.ga_len > SST_FIX_STATES) { - /* Need to clear it, might be something remaining from when the - * length was less than SST_FIX_STATES. */ - ga_init(&sp->sst_union.sst_ga, (int)sizeof(bufstate_T), 1); - ga_grow(&sp->sst_union.sst_ga, current_state.ga_len); - sp->sst_union.sst_ga.ga_len = current_state.ga_len; - bp = SYN_STATE_P(&(sp->sst_union.sst_ga)); - } else - bp = sp->sst_union.sst_stack; - for (i = 0; i < sp->sst_stacksize; ++i) { - bp[i].bs_idx = CUR_STATE(i).si_idx; - bp[i].bs_flags = CUR_STATE(i).si_flags; - bp[i].bs_seqnr = CUR_STATE(i).si_seqnr; - bp[i].bs_cchar = CUR_STATE(i).si_cchar; - bp[i].bs_extmatch = ref_extmatch(CUR_STATE(i).si_extmatch); - } - sp->sst_next_flags = current_next_flags; - sp->sst_next_list = current_next_list; - sp->sst_tick = display_tick; - sp->sst_change_lnum = 0; - } - current_state_stored = TRUE; - return sp; -} - -/* - * Copy a state stack from "from" in b_sst_array[] to current_state; - */ -static void load_current_state(synstate_T *from) -{ - int i; - bufstate_T *bp; - - clear_current_state(); - validate_current_state(); - keepend_level = -1; - if (from->sst_stacksize) { - ga_grow(¤t_state, from->sst_stacksize); - if (from->sst_stacksize > SST_FIX_STATES) - bp = SYN_STATE_P(&(from->sst_union.sst_ga)); - else - bp = from->sst_union.sst_stack; - for (i = 0; i < from->sst_stacksize; ++i) { - CUR_STATE(i).si_idx = bp[i].bs_idx; - CUR_STATE(i).si_flags = bp[i].bs_flags; - CUR_STATE(i).si_seqnr = bp[i].bs_seqnr; - CUR_STATE(i).si_cchar = bp[i].bs_cchar; - CUR_STATE(i).si_extmatch = ref_extmatch(bp[i].bs_extmatch); - if (keepend_level < 0 && (CUR_STATE(i).si_flags & HL_KEEPEND)) - keepend_level = i; - CUR_STATE(i).si_ends = FALSE; - CUR_STATE(i).si_m_lnum = 0; - if (CUR_STATE(i).si_idx >= 0) - CUR_STATE(i).si_next_list = - (SYN_ITEMS(syn_block)[CUR_STATE(i).si_idx]).sp_next_list; - else - CUR_STATE(i).si_next_list = NULL; - update_si_attr(i); - } - current_state.ga_len = from->sst_stacksize; - } - current_next_list = from->sst_next_list; - current_next_flags = from->sst_next_flags; - current_lnum = from->sst_lnum; -} - -/* - * Compare saved state stack "*sp" with the current state. - * Return TRUE when they are equal. - */ -static int syn_stack_equal(synstate_T *sp) -{ - int i, j; - bufstate_T *bp; - reg_extmatch_T *six, *bsx; - - /* First a quick check if the stacks have the same size end nextlist. */ - if (sp->sst_stacksize == current_state.ga_len - && sp->sst_next_list == current_next_list) { - /* Need to compare all states on both stacks. */ - if (sp->sst_stacksize > SST_FIX_STATES) - bp = SYN_STATE_P(&(sp->sst_union.sst_ga)); - else - bp = sp->sst_union.sst_stack; - - for (i = current_state.ga_len; --i >= 0; ) { - /* If the item has another index the state is different. */ - if (bp[i].bs_idx != CUR_STATE(i).si_idx) - break; - if (bp[i].bs_extmatch != CUR_STATE(i).si_extmatch) { - /* When the extmatch pointers are different, the strings in - * them can still be the same. Check if the extmatch - * references are equal. */ - bsx = bp[i].bs_extmatch; - six = CUR_STATE(i).si_extmatch; - /* If one of the extmatch pointers is NULL the states are - * different. */ - if (bsx == NULL || six == NULL) - break; - for (j = 0; j < NSUBEXP; ++j) { - /* Check each referenced match string. They must all be - * equal. */ - if (bsx->matches[j] != six->matches[j]) { - /* If the pointer is different it can still be the - * same text. Compare the strings, ignore case when - * the start item has the sp_ic flag set. */ - if (bsx->matches[j] == NULL - || six->matches[j] == NULL) - break; - if ((SYN_ITEMS(syn_block)[CUR_STATE(i).si_idx]).sp_ic - ? MB_STRICMP(bsx->matches[j], - six->matches[j]) != 0 - : STRCMP(bsx->matches[j], six->matches[j]) != 0) - break; - } - } - if (j != NSUBEXP) - break; - } - } - if (i < 0) - return TRUE; - } - return FALSE; -} - -/* - * We stop parsing syntax above line "lnum". If the stored state at or below - * this line depended on a change before it, it now depends on the line below - * the last parsed line. - * The window looks like this: - * line which changed - * displayed line - * displayed line - * lnum -> line below window - */ -void syntax_end_parsing(linenr_T lnum) -{ - synstate_T *sp; - - sp = syn_stack_find_entry(lnum); - if (sp != NULL && sp->sst_lnum < lnum) - sp = sp->sst_next; - - if (sp != NULL && sp->sst_change_lnum != 0) - sp->sst_change_lnum = lnum; -} - -/* - * End of handling of the state stack. - ****************************************/ - -static void invalidate_current_state(void) -{ - clear_current_state(); - current_state.ga_itemsize = 0; /* mark current_state invalid */ - current_next_list = NULL; - keepend_level = -1; -} - -static void validate_current_state(void) -{ - current_state.ga_itemsize = sizeof(stateitem_T); - current_state.ga_growsize = 3; -} - -/* - * Return TRUE if the syntax at start of lnum changed since last time. - * This will only be called just after get_syntax_attr() for the previous - * line, to check if the next line needs to be redrawn too. - */ -int syntax_check_changed(linenr_T lnum) -{ - int retval = TRUE; - synstate_T *sp; - - /* - * Check the state stack when: - * - lnum is just below the previously syntaxed line. - * - lnum is not before the lines with saved states. - * - lnum is not past the lines with saved states. - * - lnum is at or before the last changed line. - */ - if (VALID_STATE(¤t_state) && lnum == current_lnum + 1) { - sp = syn_stack_find_entry(lnum); - if (sp != NULL && sp->sst_lnum == lnum) { - /* - * finish the previous line (needed when not all of the line was - * drawn) - */ - (void)syn_finish_line(FALSE); - - /* - * Compare the current state with the previously saved state of - * the line. - */ - if (syn_stack_equal(sp)) - retval = FALSE; - - /* - * Store the current state in b_sst_array[] for later use. - */ - ++current_lnum; - (void)store_current_state(); - } - } - - return retval; -} - -/* - * Finish the current line. - * This doesn't return any attributes, it only gets the state at the end of - * the line. It can start anywhere in the line, as long as the current state - * is valid. - */ -static int -syn_finish_line ( - int syncing /* called for syncing */ -) -{ - stateitem_T *cur_si; - colnr_T prev_current_col; - - if (!current_finished) { - while (!current_finished) { - (void)syn_current_attr(syncing, FALSE, NULL, FALSE); - /* - * When syncing, and found some item, need to check the item. - */ - if (syncing && current_state.ga_len) { - /* - * Check for match with sync item. - */ - cur_si = &CUR_STATE(current_state.ga_len - 1); - if (cur_si->si_idx >= 0 - && (SYN_ITEMS(syn_block)[cur_si->si_idx].sp_flags - & (HL_SYNC_HERE|HL_SYNC_THERE))) - return TRUE; - - /* syn_current_attr() will have skipped the check for an item - * that ends here, need to do that now. Be careful not to go - * past the NUL. */ - prev_current_col = current_col; - if (syn_getcurline()[current_col] != NUL) - ++current_col; - check_state_ends(); - current_col = prev_current_col; - } - ++current_col; - } - } - return FALSE; -} - -/* - * Return highlight attributes for next character. - * Must first call syntax_start() once for the line. - * "col" is normally 0 for the first use in a line, and increments by one each - * time. It's allowed to skip characters and to stop before the end of the - * line. But only a "col" after a previously used column is allowed. - * When "can_spell" is not NULL set it to TRUE when spell-checking should be - * done. - */ -int -get_syntax_attr ( - colnr_T col, - int *can_spell, - int keep_state /* keep state of char at "col" */ -) -{ - int attr = 0; - - if (can_spell != NULL) - /* Default: Only do spelling when there is no @Spell cluster or when - * ":syn spell toplevel" was used. */ - *can_spell = syn_block->b_syn_spell == SYNSPL_DEFAULT - ? (syn_block->b_spell_cluster_id == 0) - : (syn_block->b_syn_spell == SYNSPL_TOP); - - /* check for out of memory situation */ - if (syn_block->b_sst_array == NULL) - return 0; - - /* After 'synmaxcol' the attribute is always zero. */ - if (syn_buf->b_p_smc > 0 && col >= (colnr_T)syn_buf->b_p_smc) { - clear_current_state(); - current_id = 0; - current_trans_id = 0; - current_flags = 0; - return 0; - } - - /* Make sure current_state is valid */ - if (INVALID_STATE(¤t_state)) - validate_current_state(); - - /* - * Skip from the current column to "col", get the attributes for "col". - */ - while (current_col <= col) { - attr = syn_current_attr(FALSE, TRUE, can_spell, - current_col == col ? keep_state : FALSE); - ++current_col; - } - - return attr; -} - -/* - * Get syntax attributes for current_lnum, current_col. - */ -static int -syn_current_attr ( - int syncing, /* When 1: called for syncing */ - int displaying, /* result will be displayed */ - int *can_spell, /* return: do spell checking */ - int keep_state /* keep syntax stack afterwards */ -) -{ - int syn_id; - lpos_T endpos; /* was: char_u *endp; */ - lpos_T hl_startpos; /* was: int hl_startcol; */ - lpos_T hl_endpos; - lpos_T eos_pos; /* end-of-start match (start region) */ - lpos_T eoe_pos; /* end-of-end pattern */ - int end_idx; /* group ID for end pattern */ - int idx; - synpat_T *spp; - stateitem_T *cur_si, *sip = NULL; - int startcol; - int endcol; - long flags; - int cchar; - short *next_list; - int found_match; /* found usable match */ - static int try_next_column = FALSE; /* must try in next col */ - int do_keywords; - regmmatch_T regmatch; - lpos_T pos; - int lc_col; - reg_extmatch_T *cur_extmatch = NULL; - char_u *line; /* current line. NOTE: becomes invalid after - looking for a pattern match! */ - - /* variables for zero-width matches that have a "nextgroup" argument */ - int keep_next_list; - int zero_width_next_list = FALSE; - garray_T zero_width_next_ga; - - /* - * No character, no attributes! Past end of line? - * Do try matching with an empty line (could be the start of a region). - */ - line = syn_getcurline(); - if (line[current_col] == NUL && current_col != 0) { - /* - * If we found a match after the last column, use it. - */ - if (next_match_idx >= 0 && next_match_col >= (int)current_col - && next_match_col != MAXCOL) - (void)push_next_match(NULL); - - current_finished = TRUE; - current_state_stored = FALSE; - return 0; - } - - /* if the current or next character is NUL, we will finish the line now */ - if (line[current_col] == NUL || line[current_col + 1] == NUL) { - current_finished = TRUE; - current_state_stored = FALSE; - } - - /* - * When in the previous column there was a match but it could not be used - * (empty match or already matched in this column) need to try again in - * the next column. - */ - if (try_next_column) { - next_match_idx = -1; - try_next_column = FALSE; - } - - /* Only check for keywords when not syncing and there are some. */ - do_keywords = !syncing - && (syn_block->b_keywtab.ht_used > 0 - || syn_block->b_keywtab_ic.ht_used > 0); - - /* Init the list of zero-width matches with a nextlist. This is used to - * avoid matching the same item in the same position twice. */ - ga_init(&zero_width_next_ga, (int)sizeof(int), 10); - - /* - * Repeat matching keywords and patterns, to find contained items at the - * same column. This stops when there are no extra matches at the current - * column. - */ - do { - found_match = FALSE; - keep_next_list = FALSE; - syn_id = 0; - - /* - * 1. Check for a current state. - * Only when there is no current state, or if the current state may - * contain other things, we need to check for keywords and patterns. - * Always need to check for contained items if some item has the - * "containedin" argument (takes extra time!). - */ - if (current_state.ga_len) - cur_si = &CUR_STATE(current_state.ga_len - 1); - else - cur_si = NULL; - - if (syn_block->b_syn_containedin || cur_si == NULL - || cur_si->si_cont_list != NULL) { - /* - * 2. Check for keywords, if on a keyword char after a non-keyword - * char. Don't do this when syncing. - */ - if (do_keywords) { - line = syn_getcurline(); - if (vim_iswordp_buf(line + current_col, syn_buf) - && (current_col == 0 - || !vim_iswordp_buf(line + current_col - 1 - - (has_mbyte - ? (*mb_head_off)(line, line + current_col - 1) - : 0) - , syn_buf))) { - syn_id = check_keyword_id(line, (int)current_col, - &endcol, &flags, &next_list, cur_si, - &cchar); - if (syn_id != 0) { - push_current_state(KEYWORD_IDX); - { - cur_si = &CUR_STATE(current_state.ga_len - 1); - cur_si->si_m_startcol = current_col; - cur_si->si_h_startpos.lnum = current_lnum; - cur_si->si_h_startpos.col = 0; /* starts right away */ - cur_si->si_m_endpos.lnum = current_lnum; - cur_si->si_m_endpos.col = endcol; - cur_si->si_h_endpos.lnum = current_lnum; - cur_si->si_h_endpos.col = endcol; - cur_si->si_ends = TRUE; - cur_si->si_end_idx = 0; - cur_si->si_flags = flags; - cur_si->si_seqnr = next_seqnr++; - cur_si->si_cchar = cchar; - if (current_state.ga_len > 1) - cur_si->si_flags |= - CUR_STATE(current_state.ga_len - 2).si_flags - & HL_CONCEAL; - cur_si->si_id = syn_id; - cur_si->si_trans_id = syn_id; - if (flags & HL_TRANSP) { - if (current_state.ga_len < 2) { - cur_si->si_attr = 0; - cur_si->si_trans_id = 0; - } else { - cur_si->si_attr = CUR_STATE( - current_state.ga_len - 2).si_attr; - cur_si->si_trans_id = CUR_STATE( - current_state.ga_len - 2).si_trans_id; - } - } else - cur_si->si_attr = syn_id2attr(syn_id); - cur_si->si_cont_list = NULL; - cur_si->si_next_list = next_list; - check_keepend(); - } - } - } - } - - /* - * 3. Check for patterns (only if no keyword found). - */ - if (syn_id == 0 && syn_block->b_syn_patterns.ga_len) { - /* - * If we didn't check for a match yet, or we are past it, check - * for any match with a pattern. - */ - if (next_match_idx < 0 || next_match_col < (int)current_col) { - /* - * Check all relevant patterns for a match at this - * position. This is complicated, because matching with a - * pattern takes quite a bit of time, thus we want to - * avoid doing it when it's not needed. - */ - next_match_idx = 0; /* no match in this line yet */ - next_match_col = MAXCOL; - for (idx = syn_block->b_syn_patterns.ga_len; --idx >= 0; ) { - spp = &(SYN_ITEMS(syn_block)[idx]); - if ( spp->sp_syncing == syncing - && (displaying || !(spp->sp_flags & HL_DISPLAY)) - && (spp->sp_type == SPTYPE_MATCH - || spp->sp_type == SPTYPE_START) - && (current_next_list != NULL - ? in_id_list(NULL, current_next_list, - &spp->sp_syn, 0) - : (cur_si == NULL - ? !(spp->sp_flags & HL_CONTAINED) - : in_id_list(cur_si, - cur_si->si_cont_list, &spp->sp_syn, - spp->sp_flags & HL_CONTAINED)))) { - /* If we already tried matching in this line, and - * there isn't a match before next_match_col, skip - * this item. */ - if (spp->sp_line_id == current_line_id - && spp->sp_startcol >= next_match_col) - continue; - spp->sp_line_id = current_line_id; - - lc_col = current_col - spp->sp_offsets[SPO_LC_OFF]; - if (lc_col < 0) - lc_col = 0; - - regmatch.rmm_ic = spp->sp_ic; - regmatch.regprog = spp->sp_prog; - if (!syn_regexec(®match, - current_lnum, - (colnr_T)lc_col, - IF_SYN_TIME(&spp->sp_time))) { - /* no match in this line, try another one */ - spp->sp_startcol = MAXCOL; - continue; - } - - /* - * Compute the first column of the match. - */ - syn_add_start_off(&pos, ®match, - spp, SPO_MS_OFF, -1); - if (pos.lnum > current_lnum) { - /* must have used end of match in a next line, - * we can't handle that */ - spp->sp_startcol = MAXCOL; - continue; - } - startcol = pos.col; - - /* remember the next column where this pattern - * matches in the current line */ - spp->sp_startcol = startcol; - - /* - * If a previously found match starts at a lower - * column number, don't use this one. - */ - if (startcol >= next_match_col) - continue; - - /* - * If we matched this pattern at this position - * before, skip it. Must retry in the next - * column, because it may match from there. - */ - if (did_match_already(idx, &zero_width_next_ga)) { - try_next_column = TRUE; - continue; - } - - endpos.lnum = regmatch.endpos[0].lnum; - endpos.col = regmatch.endpos[0].col; - - /* Compute the highlight start. */ - syn_add_start_off(&hl_startpos, ®match, - spp, SPO_HS_OFF, -1); - - /* Compute the region start. */ - /* Default is to use the end of the match. */ - syn_add_end_off(&eos_pos, ®match, - spp, SPO_RS_OFF, 0); - - /* - * Grab the external submatches before they get - * overwritten. Reference count doesn't change. - */ - unref_extmatch(cur_extmatch); - cur_extmatch = re_extmatch_out; - re_extmatch_out = NULL; - - flags = 0; - eoe_pos.lnum = 0; /* avoid warning */ - eoe_pos.col = 0; - end_idx = 0; - hl_endpos.lnum = 0; - - /* - * For a "oneline" the end must be found in the - * same line too. Search for it after the end of - * the match with the start pattern. Set the - * resulting end positions at the same time. - */ - if (spp->sp_type == SPTYPE_START - && (spp->sp_flags & HL_ONELINE)) { - lpos_T startpos; - - startpos = endpos; - find_endpos(idx, &startpos, &endpos, &hl_endpos, - &flags, &eoe_pos, &end_idx, cur_extmatch); - if (endpos.lnum == 0) - continue; /* not found */ - } - /* - * For a "match" the size must be > 0 after the - * end offset needs has been added. Except when - * syncing. - */ - else if (spp->sp_type == SPTYPE_MATCH) { - syn_add_end_off(&hl_endpos, ®match, spp, - SPO_HE_OFF, 0); - syn_add_end_off(&endpos, ®match, spp, - SPO_ME_OFF, 0); - if (endpos.lnum == current_lnum - && (int)endpos.col + syncing < startcol) { - /* - * If an empty string is matched, may need - * to try matching again at next column. - */ - if (regmatch.startpos[0].col - == regmatch.endpos[0].col) - try_next_column = TRUE; - continue; - } - } - - /* - * keep the best match so far in next_match_* - */ - /* Highlighting must start after startpos and end - * before endpos. */ - if (hl_startpos.lnum == current_lnum - && (int)hl_startpos.col < startcol) - hl_startpos.col = startcol; - limit_pos_zero(&hl_endpos, &endpos); - - next_match_idx = idx; - next_match_col = startcol; - next_match_m_endpos = endpos; - next_match_h_endpos = hl_endpos; - next_match_h_startpos = hl_startpos; - next_match_flags = flags; - next_match_eos_pos = eos_pos; - next_match_eoe_pos = eoe_pos; - next_match_end_idx = end_idx; - unref_extmatch(next_match_extmatch); - next_match_extmatch = cur_extmatch; - cur_extmatch = NULL; - } - } - } - - /* - * If we found a match at the current column, use it. - */ - if (next_match_idx >= 0 && next_match_col == (int)current_col) { - synpat_T *lspp; - - /* When a zero-width item matched which has a nextgroup, - * don't push the item but set nextgroup. */ - lspp = &(SYN_ITEMS(syn_block)[next_match_idx]); - if (next_match_m_endpos.lnum == current_lnum - && next_match_m_endpos.col == current_col - && lspp->sp_next_list != NULL) { - current_next_list = lspp->sp_next_list; - current_next_flags = lspp->sp_flags; - keep_next_list = TRUE; - zero_width_next_list = TRUE; - - /* Add the index to a list, so that we can check - * later that we don't match it again (and cause an - * endless loop). */ - ga_grow(&zero_width_next_ga, 1); - ((int *)(zero_width_next_ga.ga_data)) - [zero_width_next_ga.ga_len++] = next_match_idx; - next_match_idx = -1; - } else - cur_si = push_next_match(cur_si); - found_match = TRUE; - } - } - } - - /* - * Handle searching for nextgroup match. - */ - if (current_next_list != NULL && !keep_next_list) { - /* - * If a nextgroup was not found, continue looking for one if: - * - this is an empty line and the "skipempty" option was given - * - we are on white space and the "skipwhite" option was given - */ - if (!found_match) { - line = syn_getcurline(); - if (((current_next_flags & HL_SKIPWHITE) - && vim_iswhite(line[current_col])) - || ((current_next_flags & HL_SKIPEMPTY) - && *line == NUL)) - break; - } - - /* - * If a nextgroup was found: Use it, and continue looking for - * contained matches. - * If a nextgroup was not found: Continue looking for a normal - * match. - * When did set current_next_list for a zero-width item and no - * match was found don't loop (would get stuck). - */ - current_next_list = NULL; - next_match_idx = -1; - if (!zero_width_next_list) - found_match = TRUE; - } - - } while (found_match); - - /* - * Use attributes from the current state, if within its highlighting. - * If not, use attributes from the current-but-one state, etc. - */ - current_attr = 0; - current_id = 0; - current_trans_id = 0; - current_flags = 0; - if (cur_si != NULL) { - for (idx = current_state.ga_len - 1; idx >= 0; --idx) { - sip = &CUR_STATE(idx); - if ((current_lnum > sip->si_h_startpos.lnum - || (current_lnum == sip->si_h_startpos.lnum - && current_col >= sip->si_h_startpos.col)) - && (sip->si_h_endpos.lnum == 0 - || current_lnum < sip->si_h_endpos.lnum - || (current_lnum == sip->si_h_endpos.lnum - && current_col < sip->si_h_endpos.col))) { - current_attr = sip->si_attr; - current_id = sip->si_id; - current_trans_id = sip->si_trans_id; - current_flags = sip->si_flags; - current_seqnr = sip->si_seqnr; - current_sub_char = sip->si_cchar; - break; - } - } - - if (can_spell != NULL) { - struct sp_syn sps; - - /* - * set "can_spell" to TRUE if spell checking is supposed to be - * done in the current item. - */ - if (syn_block->b_spell_cluster_id == 0) { - /* There is no @Spell cluster: Do spelling for items without - * @NoSpell cluster. */ - if (syn_block->b_nospell_cluster_id == 0 - || current_trans_id == 0) - *can_spell = (syn_block->b_syn_spell != SYNSPL_NOTOP); - else { - sps.inc_tag = 0; - sps.id = syn_block->b_nospell_cluster_id; - sps.cont_in_list = NULL; - *can_spell = !in_id_list(sip, sip->si_cont_list, &sps, 0); - } - } else { - /* The @Spell cluster is defined: Do spelling in items with - * the @Spell cluster. But not when @NoSpell is also there. - * At the toplevel only spell check when ":syn spell toplevel" - * was used. */ - if (current_trans_id == 0) - *can_spell = (syn_block->b_syn_spell == SYNSPL_TOP); - else { - sps.inc_tag = 0; - sps.id = syn_block->b_spell_cluster_id; - sps.cont_in_list = NULL; - *can_spell = in_id_list(sip, sip->si_cont_list, &sps, 0); - - if (syn_block->b_nospell_cluster_id != 0) { - sps.id = syn_block->b_nospell_cluster_id; - if (in_id_list(sip, sip->si_cont_list, &sps, 0)) - *can_spell = FALSE; - } - } - } - } - - - /* - * Check for end of current state (and the states before it) at the - * next column. Don't do this for syncing, because we would miss a - * single character match. - * First check if the current state ends at the current column. It - * may be for an empty match and a containing item might end in the - * current column. - */ - if (!syncing && !keep_state) { - check_state_ends(); - if (current_state.ga_len > 0 - && syn_getcurline()[current_col] != NUL) { - ++current_col; - check_state_ends(); - --current_col; - } - } - } else if (can_spell != NULL) - /* Default: Only do spelling when there is no @Spell cluster or when - * ":syn spell toplevel" was used. */ - *can_spell = syn_block->b_syn_spell == SYNSPL_DEFAULT - ? (syn_block->b_spell_cluster_id == 0) - : (syn_block->b_syn_spell == SYNSPL_TOP); - - /* nextgroup ends at end of line, unless "skipnl" or "skipempty" present */ - if (current_next_list != NULL - && syn_getcurline()[current_col + 1] == NUL - && !(current_next_flags & (HL_SKIPNL | HL_SKIPEMPTY))) - current_next_list = NULL; - - if (zero_width_next_ga.ga_len > 0) - ga_clear(&zero_width_next_ga); - - /* No longer need external matches. But keep next_match_extmatch. */ - unref_extmatch(re_extmatch_out); - re_extmatch_out = NULL; - unref_extmatch(cur_extmatch); - - return current_attr; -} - - -/* - * Check if we already matched pattern "idx" at the current column. - */ -static int did_match_already(int idx, garray_T *gap) -{ - int i; - - for (i = current_state.ga_len; --i >= 0; ) - if (CUR_STATE(i).si_m_startcol == (int)current_col - && CUR_STATE(i).si_m_lnum == (int)current_lnum - && CUR_STATE(i).si_idx == idx) - return TRUE; - - /* Zero-width matches with a nextgroup argument are not put on the syntax - * stack, and can only be matched once anyway. */ - for (i = gap->ga_len; --i >= 0; ) - if (((int *)(gap->ga_data))[i] == idx) - return TRUE; - - return FALSE; -} - -/* - * Push the next match onto the stack. - */ -static stateitem_T *push_next_match(stateitem_T *cur_si) -{ - synpat_T *spp; - int save_flags; - - spp = &(SYN_ITEMS(syn_block)[next_match_idx]); - - /* - * Push the item in current_state stack; - */ - push_current_state(next_match_idx); - { - /* - * If it's a start-skip-end type that crosses lines, figure out how - * much it continues in this line. Otherwise just fill in the length. - */ - cur_si = &CUR_STATE(current_state.ga_len - 1); - cur_si->si_h_startpos = next_match_h_startpos; - cur_si->si_m_startcol = current_col; - cur_si->si_m_lnum = current_lnum; - cur_si->si_flags = spp->sp_flags; - cur_si->si_seqnr = next_seqnr++; - cur_si->si_cchar = spp->sp_cchar; - if (current_state.ga_len > 1) - cur_si->si_flags |= - CUR_STATE(current_state.ga_len - 2).si_flags & HL_CONCEAL; - cur_si->si_next_list = spp->sp_next_list; - cur_si->si_extmatch = ref_extmatch(next_match_extmatch); - if (spp->sp_type == SPTYPE_START && !(spp->sp_flags & HL_ONELINE)) { - /* Try to find the end pattern in the current line */ - update_si_end(cur_si, (int)(next_match_m_endpos.col), TRUE); - check_keepend(); - } else { - cur_si->si_m_endpos = next_match_m_endpos; - cur_si->si_h_endpos = next_match_h_endpos; - cur_si->si_ends = TRUE; - cur_si->si_flags |= next_match_flags; - cur_si->si_eoe_pos = next_match_eoe_pos; - cur_si->si_end_idx = next_match_end_idx; - } - if (keepend_level < 0 && (cur_si->si_flags & HL_KEEPEND)) - keepend_level = current_state.ga_len - 1; - check_keepend(); - update_si_attr(current_state.ga_len - 1); - - save_flags = cur_si->si_flags & (HL_CONCEAL | HL_CONCEALENDS); - /* - * If the start pattern has another highlight group, push another item - * on the stack for the start pattern. - */ - if (spp->sp_type == SPTYPE_START && spp->sp_syn_match_id != 0) { - push_current_state(next_match_idx); - cur_si = &CUR_STATE(current_state.ga_len - 1); - cur_si->si_h_startpos = next_match_h_startpos; - cur_si->si_m_startcol = current_col; - cur_si->si_m_lnum = current_lnum; - cur_si->si_m_endpos = next_match_eos_pos; - cur_si->si_h_endpos = next_match_eos_pos; - cur_si->si_ends = TRUE; - cur_si->si_end_idx = 0; - cur_si->si_flags = HL_MATCH; - cur_si->si_seqnr = next_seqnr++; - cur_si->si_flags |= save_flags; - if (cur_si->si_flags & HL_CONCEALENDS) - cur_si->si_flags |= HL_CONCEAL; - cur_si->si_next_list = NULL; - check_keepend(); - update_si_attr(current_state.ga_len - 1); - } - } - - next_match_idx = -1; /* try other match next time */ - - return cur_si; -} - -/* - * Check for end of current state (and the states before it). - */ -static void check_state_ends(void) -{ - stateitem_T *cur_si; - int had_extend; - - cur_si = &CUR_STATE(current_state.ga_len - 1); - for (;; ) { - if (cur_si->si_ends - && (cur_si->si_m_endpos.lnum < current_lnum - || (cur_si->si_m_endpos.lnum == current_lnum - && cur_si->si_m_endpos.col <= current_col))) { - /* - * If there is an end pattern group ID, highlight the end pattern - * now. No need to pop the current item from the stack. - * Only do this if the end pattern continues beyond the current - * position. - */ - if (cur_si->si_end_idx - && (cur_si->si_eoe_pos.lnum > current_lnum - || (cur_si->si_eoe_pos.lnum == current_lnum - && cur_si->si_eoe_pos.col > current_col))) { - cur_si->si_idx = cur_si->si_end_idx; - cur_si->si_end_idx = 0; - cur_si->si_m_endpos = cur_si->si_eoe_pos; - cur_si->si_h_endpos = cur_si->si_eoe_pos; - cur_si->si_flags |= HL_MATCH; - cur_si->si_seqnr = next_seqnr++; - if (cur_si->si_flags & HL_CONCEALENDS) - cur_si->si_flags |= HL_CONCEAL; - update_si_attr(current_state.ga_len - 1); - - /* nextgroup= should not match in the end pattern */ - current_next_list = NULL; - - /* what matches next may be different now, clear it */ - next_match_idx = 0; - next_match_col = MAXCOL; - break; - } else { - /* handle next_list, unless at end of line and no "skipnl" or - * "skipempty" */ - current_next_list = cur_si->si_next_list; - current_next_flags = cur_si->si_flags; - if (!(current_next_flags & (HL_SKIPNL | HL_SKIPEMPTY)) - && syn_getcurline()[current_col] == NUL) - current_next_list = NULL; - - /* When the ended item has "extend", another item with - * "keepend" now needs to check for its end. */ - had_extend = (cur_si->si_flags & HL_EXTEND); - - pop_current_state(); - - if (current_state.ga_len == 0) - break; - - if (had_extend && keepend_level >= 0) { - syn_update_ends(FALSE); - if (current_state.ga_len == 0) - break; - } - - cur_si = &CUR_STATE(current_state.ga_len - 1); - - /* - * Only for a region the search for the end continues after - * the end of the contained item. If the contained match - * included the end-of-line, break here, the region continues. - * Don't do this when: - * - "keepend" is used for the contained item - * - not at the end of the line (could be end="x$"me=e-1). - * - "excludenl" is used (HL_HAS_EOL won't be set) - */ - if (cur_si->si_idx >= 0 - && SYN_ITEMS(syn_block)[cur_si->si_idx].sp_type - == SPTYPE_START - && !(cur_si->si_flags & (HL_MATCH | HL_KEEPEND))) { - update_si_end(cur_si, (int)current_col, TRUE); - check_keepend(); - if ((current_next_flags & HL_HAS_EOL) - && keepend_level < 0 - && syn_getcurline()[current_col] == NUL) - break; - } - } - } else - break; - } -} - -/* - * Update an entry in the current_state stack for a match or region. This - * fills in si_attr, si_next_list and si_cont_list. - */ -static void update_si_attr(int idx) -{ - stateitem_T *sip = &CUR_STATE(idx); - synpat_T *spp; - - /* This should not happen... */ - if (sip->si_idx < 0) - return; - - spp = &(SYN_ITEMS(syn_block)[sip->si_idx]); - if (sip->si_flags & HL_MATCH) - sip->si_id = spp->sp_syn_match_id; - else - sip->si_id = spp->sp_syn.id; - sip->si_attr = syn_id2attr(sip->si_id); - sip->si_trans_id = sip->si_id; - if (sip->si_flags & HL_MATCH) - sip->si_cont_list = NULL; - else - sip->si_cont_list = spp->sp_cont_list; - - /* - * For transparent items, take attr from outer item. - * Also take cont_list, if there is none. - * Don't do this for the matchgroup of a start or end pattern. - */ - if ((spp->sp_flags & HL_TRANSP) && !(sip->si_flags & HL_MATCH)) { - if (idx == 0) { - sip->si_attr = 0; - sip->si_trans_id = 0; - if (sip->si_cont_list == NULL) - sip->si_cont_list = ID_LIST_ALL; - } else { - sip->si_attr = CUR_STATE(idx - 1).si_attr; - sip->si_trans_id = CUR_STATE(idx - 1).si_trans_id; - sip->si_h_startpos = CUR_STATE(idx - 1).si_h_startpos; - sip->si_h_endpos = CUR_STATE(idx - 1).si_h_endpos; - if (sip->si_cont_list == NULL) { - sip->si_flags |= HL_TRANS_CONT; - sip->si_cont_list = CUR_STATE(idx - 1).si_cont_list; - } - } - } -} - -/* - * Check the current stack for patterns with "keepend" flag. - * Propagate the match-end to contained items, until a "skipend" item is found. - */ -static void check_keepend(void) -{ - int i; - lpos_T maxpos; - lpos_T maxpos_h; - stateitem_T *sip; - - /* - * This check can consume a lot of time; only do it from the level where - * there really is a keepend. - */ - if (keepend_level < 0) - return; - - /* - * Find the last index of an "extend" item. "keepend" items before that - * won't do anything. If there is no "extend" item "i" will be - * "keepend_level" and all "keepend" items will work normally. - */ - for (i = current_state.ga_len - 1; i > keepend_level; --i) - if (CUR_STATE(i).si_flags & HL_EXTEND) - break; - - maxpos.lnum = 0; - maxpos.col = 0; - maxpos_h.lnum = 0; - maxpos_h.col = 0; - for (; i < current_state.ga_len; ++i) { - sip = &CUR_STATE(i); - if (maxpos.lnum != 0) { - limit_pos_zero(&sip->si_m_endpos, &maxpos); - limit_pos_zero(&sip->si_h_endpos, &maxpos_h); - limit_pos_zero(&sip->si_eoe_pos, &maxpos); - sip->si_ends = TRUE; - } - if (sip->si_ends && (sip->si_flags & HL_KEEPEND)) { - if (maxpos.lnum == 0 - || maxpos.lnum > sip->si_m_endpos.lnum - || (maxpos.lnum == sip->si_m_endpos.lnum - && maxpos.col > sip->si_m_endpos.col)) - maxpos = sip->si_m_endpos; - if (maxpos_h.lnum == 0 - || maxpos_h.lnum > sip->si_h_endpos.lnum - || (maxpos_h.lnum == sip->si_h_endpos.lnum - && maxpos_h.col > sip->si_h_endpos.col)) - maxpos_h = sip->si_h_endpos; - } - } -} - -/* - * Update an entry in the current_state stack for a start-skip-end pattern. - * This finds the end of the current item, if it's in the current line. - * - * Return the flags for the matched END. - */ -static void -update_si_end ( - stateitem_T *sip, - int startcol, /* where to start searching for the end */ - int force /* when TRUE overrule a previous end */ -) -{ - lpos_T startpos; - lpos_T endpos; - lpos_T hl_endpos; - lpos_T end_endpos; - int end_idx; - - /* return quickly for a keyword */ - if (sip->si_idx < 0) - return; - - /* Don't update when it's already done. Can be a match of an end pattern - * that started in a previous line. Watch out: can also be a "keepend" - * from a containing item. */ - if (!force && sip->si_m_endpos.lnum >= current_lnum) - return; - - /* - * We need to find the end of the region. It may continue in the next - * line. - */ - end_idx = 0; - startpos.lnum = current_lnum; - startpos.col = startcol; - find_endpos(sip->si_idx, &startpos, &endpos, &hl_endpos, - &(sip->si_flags), &end_endpos, &end_idx, sip->si_extmatch); - - if (endpos.lnum == 0) { - /* No end pattern matched. */ - if (SYN_ITEMS(syn_block)[sip->si_idx].sp_flags & HL_ONELINE) { - /* a "oneline" never continues in the next line */ - sip->si_ends = TRUE; - sip->si_m_endpos.lnum = current_lnum; - sip->si_m_endpos.col = (colnr_T)STRLEN(syn_getcurline()); - } else { - /* continues in the next line */ - sip->si_ends = FALSE; - sip->si_m_endpos.lnum = 0; - } - sip->si_h_endpos = sip->si_m_endpos; - } else { - /* match within this line */ - sip->si_m_endpos = endpos; - sip->si_h_endpos = hl_endpos; - sip->si_eoe_pos = end_endpos; - sip->si_ends = TRUE; - sip->si_end_idx = end_idx; - } -} - -/* - * Add a new state to the current state stack. - * It is cleared and the index set to "idx". - */ -static void push_current_state(int idx) -{ - ga_grow(¤t_state, 1); - memset(&CUR_STATE(current_state.ga_len), 0, sizeof(stateitem_T)); - CUR_STATE(current_state.ga_len).si_idx = idx; - ++current_state.ga_len; -} - -/* - * Remove a state from the current_state stack. - */ -static void pop_current_state(void) -{ - if (current_state.ga_len) { - unref_extmatch(CUR_STATE(current_state.ga_len - 1).si_extmatch); - --current_state.ga_len; - } - /* after the end of a pattern, try matching a keyword or pattern */ - next_match_idx = -1; - - /* if first state with "keepend" is popped, reset keepend_level */ - if (keepend_level >= current_state.ga_len) - keepend_level = -1; -} - -/* - * Find the end of a start/skip/end syntax region after "startpos". - * Only checks one line. - * Also handles a match item that continued from a previous line. - * If not found, the syntax item continues in the next line. m_endpos->lnum - * will be 0. - * If found, the end of the region and the end of the highlighting is - * computed. - */ -static void -find_endpos ( - int idx, /* index of the pattern */ - lpos_T *startpos, /* where to start looking for an END match */ - lpos_T *m_endpos, /* return: end of match */ - lpos_T *hl_endpos, /* return: end of highlighting */ - long *flagsp, /* return: flags of matching END */ - lpos_T *end_endpos, /* return: end of end pattern match */ - int *end_idx, /* return: group ID for end pat. match, or 0 */ - reg_extmatch_T *start_ext /* submatches from the start pattern */ -) -{ - colnr_T matchcol; - synpat_T *spp, *spp_skip; - int start_idx; - int best_idx; - regmmatch_T regmatch; - regmmatch_T best_regmatch; /* startpos/endpos of best match */ - lpos_T pos; - char_u *line; - int had_match = FALSE; - - /* just in case we are invoked for a keyword */ - if (idx < 0) - return; - - /* - * Check for being called with a START pattern. - * Can happen with a match that continues to the next line, because it - * contained a region. - */ - spp = &(SYN_ITEMS(syn_block)[idx]); - if (spp->sp_type != SPTYPE_START) { - *hl_endpos = *startpos; - return; - } - - /* - * Find the SKIP or first END pattern after the last START pattern. - */ - for (;; ) { - spp = &(SYN_ITEMS(syn_block)[idx]); - if (spp->sp_type != SPTYPE_START) - break; - ++idx; - } - - /* - * Lookup the SKIP pattern (if present) - */ - if (spp->sp_type == SPTYPE_SKIP) { - spp_skip = spp; - ++idx; - } else - spp_skip = NULL; - - /* Setup external matches for syn_regexec(). */ - unref_extmatch(re_extmatch_in); - re_extmatch_in = ref_extmatch(start_ext); - - matchcol = startpos->col; /* start looking for a match at sstart */ - start_idx = idx; /* remember the first END pattern. */ - best_regmatch.startpos[0].col = 0; /* avoid compiler warning */ - for (;; ) { - /* - * Find end pattern that matches first after "matchcol". - */ - best_idx = -1; - for (idx = start_idx; idx < syn_block->b_syn_patterns.ga_len; ++idx) { - int lc_col = matchcol; - - spp = &(SYN_ITEMS(syn_block)[idx]); - if (spp->sp_type != SPTYPE_END) /* past last END pattern */ - break; - lc_col -= spp->sp_offsets[SPO_LC_OFF]; - if (lc_col < 0) - lc_col = 0; - - regmatch.rmm_ic = spp->sp_ic; - regmatch.regprog = spp->sp_prog; - if (syn_regexec(®match, startpos->lnum, lc_col, - IF_SYN_TIME(&spp->sp_time))) { - if (best_idx == -1 || regmatch.startpos[0].col - < best_regmatch.startpos[0].col) { - best_idx = idx; - best_regmatch.startpos[0] = regmatch.startpos[0]; - best_regmatch.endpos[0] = regmatch.endpos[0]; - } - } - } - - /* - * If all end patterns have been tried, and there is no match, the - * item continues until end-of-line. - */ - if (best_idx == -1) - break; - - /* - * If the skip pattern matches before the end pattern, - * continue searching after the skip pattern. - */ - if (spp_skip != NULL) { - int lc_col = matchcol - spp_skip->sp_offsets[SPO_LC_OFF]; - - if (lc_col < 0) - lc_col = 0; - regmatch.rmm_ic = spp_skip->sp_ic; - regmatch.regprog = spp_skip->sp_prog; - if (syn_regexec(®match, startpos->lnum, lc_col, - IF_SYN_TIME(&spp_skip->sp_time)) - && regmatch.startpos[0].col - <= best_regmatch.startpos[0].col) { - /* Add offset to skip pattern match */ - syn_add_end_off(&pos, ®match, spp_skip, SPO_ME_OFF, 1); - - /* If the skip pattern goes on to the next line, there is no - * match with an end pattern in this line. */ - if (pos.lnum > startpos->lnum) - break; - - line = ml_get_buf(syn_buf, startpos->lnum, FALSE); - - /* take care of an empty match or negative offset */ - if (pos.col <= matchcol) - ++matchcol; - else if (pos.col <= regmatch.endpos[0].col) - matchcol = pos.col; - else - /* Be careful not to jump over the NUL at the end-of-line */ - for (matchcol = regmatch.endpos[0].col; - line[matchcol] != NUL && matchcol < pos.col; - ++matchcol) - ; - - /* if the skip pattern includes end-of-line, break here */ - if (line[matchcol] == NUL) - break; - - continue; /* start with first end pattern again */ - } - } - - /* - * Match from start pattern to end pattern. - * Correct for match and highlight offset of end pattern. - */ - spp = &(SYN_ITEMS(syn_block)[best_idx]); - syn_add_end_off(m_endpos, &best_regmatch, spp, SPO_ME_OFF, 1); - /* can't end before the start */ - if (m_endpos->lnum == startpos->lnum && m_endpos->col < startpos->col) - m_endpos->col = startpos->col; - - syn_add_end_off(end_endpos, &best_regmatch, spp, SPO_HE_OFF, 1); - /* can't end before the start */ - if (end_endpos->lnum == startpos->lnum - && end_endpos->col < startpos->col) - end_endpos->col = startpos->col; - /* can't end after the match */ - limit_pos(end_endpos, m_endpos); - - /* - * If the end group is highlighted differently, adjust the pointers. - */ - if (spp->sp_syn_match_id != spp->sp_syn.id && spp->sp_syn_match_id != 0) { - *end_idx = best_idx; - if (spp->sp_off_flags & (1 << (SPO_RE_OFF + SPO_COUNT))) { - hl_endpos->lnum = best_regmatch.endpos[0].lnum; - hl_endpos->col = best_regmatch.endpos[0].col; - } else { - hl_endpos->lnum = best_regmatch.startpos[0].lnum; - hl_endpos->col = best_regmatch.startpos[0].col; - } - hl_endpos->col += spp->sp_offsets[SPO_RE_OFF]; - - /* can't end before the start */ - if (hl_endpos->lnum == startpos->lnum - && hl_endpos->col < startpos->col) - hl_endpos->col = startpos->col; - limit_pos(hl_endpos, m_endpos); - - /* now the match ends where the highlighting ends, it is turned - * into the matchgroup for the end */ - *m_endpos = *hl_endpos; - } else { - *end_idx = 0; - *hl_endpos = *end_endpos; - } - - *flagsp = spp->sp_flags; - - had_match = TRUE; - break; - } - - /* no match for an END pattern in this line */ - if (!had_match) - m_endpos->lnum = 0; - - /* Remove external matches. */ - unref_extmatch(re_extmatch_in); - re_extmatch_in = NULL; -} - -/* - * Limit "pos" not to be after "limit". - */ -static void limit_pos(lpos_T *pos, lpos_T *limit) -{ - if (pos->lnum > limit->lnum) - *pos = *limit; - else if (pos->lnum == limit->lnum && pos->col > limit->col) - pos->col = limit->col; -} - -/* - * Limit "pos" not to be after "limit", unless pos->lnum is zero. - */ -static void limit_pos_zero(lpos_T *pos, lpos_T *limit) -{ - if (pos->lnum == 0) - *pos = *limit; - else - limit_pos(pos, limit); -} - -/* - * Add offset to matched text for end of match or highlight. - */ -static void -syn_add_end_off ( - lpos_T *result, /* returned position */ - regmmatch_T *regmatch, /* start/end of match */ - synpat_T *spp, /* matched pattern */ - int idx, /* index of offset */ - int extra /* extra chars for offset to start */ -) -{ - int col; - int off; - char_u *base; - char_u *p; - - if (spp->sp_off_flags & (1 << idx)) { - result->lnum = regmatch->startpos[0].lnum; - col = regmatch->startpos[0].col; - off = spp->sp_offsets[idx] + extra; - } else { - result->lnum = regmatch->endpos[0].lnum; - col = regmatch->endpos[0].col; - off = spp->sp_offsets[idx]; - } - /* Don't go past the end of the line. Matters for "rs=e+2" when there - * is a matchgroup. Watch out for match with last NL in the buffer. */ - if (result->lnum > syn_buf->b_ml.ml_line_count) - col = 0; - else if (off != 0) { - base = ml_get_buf(syn_buf, result->lnum, FALSE); - p = base + col; - if (off > 0) { - while (off-- > 0 && *p != NUL) - mb_ptr_adv(p); - } else if (off < 0) { - while (off++ < 0 && base < p) - mb_ptr_back(base, p); - } - col = (int)(p - base); - } - result->col = col; -} - -/* - * Add offset to matched text for start of match or highlight. - * Avoid resulting column to become negative. - */ -static void -syn_add_start_off ( - lpos_T *result, /* returned position */ - regmmatch_T *regmatch, /* start/end of match */ - synpat_T *spp, - int idx, - int extra /* extra chars for offset to end */ -) -{ - int col; - int off; - char_u *base; - char_u *p; - - if (spp->sp_off_flags & (1 << (idx + SPO_COUNT))) { - result->lnum = regmatch->endpos[0].lnum; - col = regmatch->endpos[0].col; - off = spp->sp_offsets[idx] + extra; - } else { - result->lnum = regmatch->startpos[0].lnum; - col = regmatch->startpos[0].col; - off = spp->sp_offsets[idx]; - } - if (result->lnum > syn_buf->b_ml.ml_line_count) { - /* a "\n" at the end of the pattern may take us below the last line */ - result->lnum = syn_buf->b_ml.ml_line_count; - col = (int)STRLEN(ml_get_buf(syn_buf, result->lnum, FALSE)); - } - if (off != 0) { - base = ml_get_buf(syn_buf, result->lnum, FALSE); - p = base + col; - if (off > 0) { - while (off-- && *p != NUL) - mb_ptr_adv(p); - } else if (off < 0) { - while (off++ && base < p) - mb_ptr_back(base, p); - } - col = (int)(p - base); - } - result->col = col; -} - -/* - * Get current line in syntax buffer. - */ -static char_u *syn_getcurline(void) -{ - return ml_get_buf(syn_buf, current_lnum, FALSE); -} - -/* - * Call vim_regexec() to find a match with "rmp" in "syn_buf". - * Returns TRUE when there is a match. - */ -static int syn_regexec(regmmatch_T *rmp, linenr_T lnum, colnr_T col, syn_time_T *st) -{ - int r; - proftime_T pt; - - if (syn_time_on) - profile_start(&pt); - - rmp->rmm_maxcol = syn_buf->b_p_smc; - r = vim_regexec_multi(rmp, syn_win, syn_buf, lnum, col, NULL); - - if (syn_time_on) { - profile_end(&pt); - profile_add(&st->total, &pt); - if (profile_cmp(&pt, &st->slowest) < 0) - st->slowest = pt; - ++st->count; - if (r > 0) - ++st->match; - } - - if (r > 0) { - rmp->startpos[0].lnum += lnum; - rmp->endpos[0].lnum += lnum; - return TRUE; - } - return FALSE; -} - -/* - * Check one position in a line for a matching keyword. - * The caller must check if a keyword can start at startcol. - * Return it's ID if found, 0 otherwise. - */ -static int -check_keyword_id ( - char_u *line, - int startcol, /* position in line to check for keyword */ - int *endcolp, /* return: character after found keyword */ - long *flagsp, /* return: flags of matching keyword */ - short **next_listp, /* return: next_list of matching keyword */ - stateitem_T *cur_si, /* item at the top of the stack */ - int *ccharp /* conceal substitution char */ -) -{ - char_u *kwp; - int kwlen; - char_u keyword[MAXKEYWLEN + 1]; /* assume max. keyword len is 80 */ - - /* Find first character after the keyword. First character was already - * checked. */ - kwp = line + startcol; - kwlen = 0; - do { - if (has_mbyte) - kwlen += (*mb_ptr2len)(kwp + kwlen); - else - ++kwlen; - } while (vim_iswordp_buf(kwp + kwlen, syn_buf)); - - if (kwlen > MAXKEYWLEN) - return 0; - - /* - * Must make a copy of the keyword, so we can add a NUL and make it - * lowercase. - */ - vim_strncpy(keyword, kwp, kwlen); - - keyentry_T *kp = NULL; - - // matching case - if (syn_block->b_keywtab.ht_used != 0) { - kp = match_keyword(keyword, &syn_block->b_keywtab, cur_si); - } - - // ignoring case - if (kp == NULL && syn_block->b_keywtab_ic.ht_used != 0) { - str_foldcase(kwp, kwlen, keyword, MAXKEYWLEN + 1); - kp = match_keyword(keyword, &syn_block->b_keywtab_ic, cur_si); - } - - if (kp != NULL) { - *endcolp = startcol + kwlen; - *flagsp = kp->flags; - *next_listp = kp->next_list; - *ccharp = kp->k_char; - return kp->k_syn.id; - } - - return 0; -} - -/// Find keywords that match. There can be several with different -/// attributes. -/// When current_next_list is non-zero accept only that group, otherwise: -/// Accept a not-contained keyword at toplevel. -/// Accept a keyword at other levels only if it is in the contains list. -static keyentry_T *match_keyword(char_u *keyword, hashtab_T *ht, - stateitem_T *cur_si) -{ - hashitem_T *hi = hash_find(ht, keyword); - if (!HASHITEM_EMPTY(hi)) - for (keyentry_T *kp = HI2KE(hi); kp != NULL; kp = kp->ke_next) { - if (current_next_list != 0 - ? in_id_list(NULL, current_next_list, &kp->k_syn, 0) - : (cur_si == NULL - ? !(kp->flags & HL_CONTAINED) - : in_id_list(cur_si, cur_si->si_cont_list, - &kp->k_syn, kp->flags & HL_CONTAINED))) { - return kp; - } - } - return NULL; -} - -/* - * Handle ":syntax conceal" command. - */ -static void syn_cmd_conceal(exarg_T *eap, int syncing) -{ - char_u *arg = eap->arg; - char_u *next; - - eap->nextcmd = find_nextcmd(arg); - if (eap->skip) - return; - - next = skiptowhite(arg); - if (STRNICMP(arg, "on", 2) == 0 && next - arg == 2) - curwin->w_s->b_syn_conceal = TRUE; - else if (STRNICMP(arg, "off", 3) == 0 && next - arg == 3) - curwin->w_s->b_syn_conceal = FALSE; - else - EMSG2(_("E390: Illegal argument: %s"), arg); -} - -/* - * Handle ":syntax case" command. - */ -static void syn_cmd_case(exarg_T *eap, int syncing) -{ - char_u *arg = eap->arg; - char_u *next; - - eap->nextcmd = find_nextcmd(arg); - if (eap->skip) - return; - - next = skiptowhite(arg); - if (STRNICMP(arg, "match", 5) == 0 && next - arg == 5) - curwin->w_s->b_syn_ic = FALSE; - else if (STRNICMP(arg, "ignore", 6) == 0 && next - arg == 6) - curwin->w_s->b_syn_ic = TRUE; - else - EMSG2(_("E390: Illegal argument: %s"), arg); -} - -/* - * Handle ":syntax spell" command. - */ -static void syn_cmd_spell(exarg_T *eap, int syncing) -{ - char_u *arg = eap->arg; - char_u *next; - - eap->nextcmd = find_nextcmd(arg); - if (eap->skip) - return; - - next = skiptowhite(arg); - if (STRNICMP(arg, "toplevel", 8) == 0 && next - arg == 8) - curwin->w_s->b_syn_spell = SYNSPL_TOP; - else if (STRNICMP(arg, "notoplevel", 10) == 0 && next - arg == 10) - curwin->w_s->b_syn_spell = SYNSPL_NOTOP; - else if (STRNICMP(arg, "default", 7) == 0 && next - arg == 7) - curwin->w_s->b_syn_spell = SYNSPL_DEFAULT; - else - EMSG2(_("E390: Illegal argument: %s"), arg); -} - -/* - * Clear all syntax info for one buffer. - */ -void syntax_clear(synblock_T *block) -{ - int i; - - block->b_syn_error = FALSE; /* clear previous error */ - block->b_syn_ic = FALSE; /* Use case, by default */ - block->b_syn_spell = SYNSPL_DEFAULT; /* default spell checking */ - block->b_syn_containedin = FALSE; - - /* free the keywords */ - clear_keywtab(&block->b_keywtab); - clear_keywtab(&block->b_keywtab_ic); - - /* free the syntax patterns */ - for (i = block->b_syn_patterns.ga_len; --i >= 0; ) - syn_clear_pattern(block, i); - ga_clear(&block->b_syn_patterns); - - /* free the syntax clusters */ - for (i = block->b_syn_clusters.ga_len; --i >= 0; ) - syn_clear_cluster(block, i); - ga_clear(&block->b_syn_clusters); - block->b_spell_cluster_id = 0; - block->b_nospell_cluster_id = 0; - - block->b_syn_sync_flags = 0; - block->b_syn_sync_minlines = 0; - block->b_syn_sync_maxlines = 0; - block->b_syn_sync_linebreaks = 0; - - vim_regfree(block->b_syn_linecont_prog); - block->b_syn_linecont_prog = NULL; - free(block->b_syn_linecont_pat); - block->b_syn_linecont_pat = NULL; - block->b_syn_folditems = 0; - - /* free the stored states */ - syn_stack_free_all(block); - invalidate_current_state(); - - /* Reset the counter for ":syn include" */ - running_syn_inc_tag = 0; -} - -/* - * Get rid of ownsyntax for window "wp". - */ -void reset_synblock(win_T *wp) -{ - if (wp->w_s != &wp->w_buffer->b_s) { - syntax_clear(wp->w_s); - free(wp->w_s); - wp->w_s = &wp->w_buffer->b_s; - } -} - -/* - * Clear syncing info for one buffer. - */ -static void syntax_sync_clear(void) -{ - int i; - - /* free the syntax patterns */ - for (i = curwin->w_s->b_syn_patterns.ga_len; --i >= 0; ) - if (SYN_ITEMS(curwin->w_s)[i].sp_syncing) - syn_remove_pattern(curwin->w_s, i); - - curwin->w_s->b_syn_sync_flags = 0; - curwin->w_s->b_syn_sync_minlines = 0; - curwin->w_s->b_syn_sync_maxlines = 0; - curwin->w_s->b_syn_sync_linebreaks = 0; - - vim_regfree(curwin->w_s->b_syn_linecont_prog); - curwin->w_s->b_syn_linecont_prog = NULL; - free(curwin->w_s->b_syn_linecont_pat); - curwin->w_s->b_syn_linecont_pat = NULL; - - syn_stack_free_all(curwin->w_s); /* Need to recompute all syntax. */ -} - -/* - * Remove one pattern from the buffer's pattern list. - */ -static void syn_remove_pattern(synblock_T *block, int idx) -{ - synpat_T *spp; - - spp = &(SYN_ITEMS(block)[idx]); - if (spp->sp_flags & HL_FOLD) - --block->b_syn_folditems; - syn_clear_pattern(block, idx); - memmove(spp, spp + 1, - sizeof(synpat_T) * (block->b_syn_patterns.ga_len - idx - 1)); - --block->b_syn_patterns.ga_len; -} - -/* - * Clear and free one syntax pattern. When clearing all, must be called from - * last to first! - */ -static void syn_clear_pattern(synblock_T *block, int i) -{ - free(SYN_ITEMS(block)[i].sp_pattern); - vim_regfree(SYN_ITEMS(block)[i].sp_prog); - /* Only free sp_cont_list and sp_next_list of first start pattern */ - if (i == 0 || SYN_ITEMS(block)[i - 1].sp_type != SPTYPE_START) { - free(SYN_ITEMS(block)[i].sp_cont_list); - free(SYN_ITEMS(block)[i].sp_next_list); - free(SYN_ITEMS(block)[i].sp_syn.cont_in_list); - } -} - -/* - * Clear and free one syntax cluster. - */ -static void syn_clear_cluster(synblock_T *block, int i) -{ - free(SYN_CLSTR(block)[i].scl_name); - free(SYN_CLSTR(block)[i].scl_name_u); - free(SYN_CLSTR(block)[i].scl_list); -} - -/* - * Handle ":syntax clear" command. - */ -static void syn_cmd_clear(exarg_T *eap, int syncing) -{ - char_u *arg = eap->arg; - char_u *arg_end; - int id; - - eap->nextcmd = find_nextcmd(arg); - if (eap->skip) - return; - - /* - * We have to disable this within ":syn include @group filename", - * because otherwise @group would get deleted. - * Only required for Vim 5.x syntax files, 6.0 ones don't contain ":syn - * clear". - */ - if (curwin->w_s->b_syn_topgrp != 0) - return; - - if (ends_excmd(*arg)) { - /* - * No argument: Clear all syntax items. - */ - if (syncing) - syntax_sync_clear(); - else { - syntax_clear(curwin->w_s); - if (curwin->w_s == &curwin->w_buffer->b_s) - do_unlet((char_u *)"b:current_syntax", TRUE); - do_unlet((char_u *)"w:current_syntax", TRUE); - } - } else { - /* - * Clear the group IDs that are in the argument. - */ - while (!ends_excmd(*arg)) { - arg_end = skiptowhite(arg); - if (*arg == '@') { - id = syn_scl_namen2id(arg + 1, (int)(arg_end - arg - 1)); - if (id == 0) { - EMSG2(_("E391: No such syntax cluster: %s"), arg); - break; - } else { - /* - * We can't physically delete a cluster without changing - * the IDs of other clusters, so we do the next best thing - * and make it empty. - */ - short scl_id = id - SYNID_CLUSTER; - - free(SYN_CLSTR(curwin->w_s)[scl_id].scl_list); - SYN_CLSTR(curwin->w_s)[scl_id].scl_list = NULL; - } - } else { - id = syn_namen2id(arg, (int)(arg_end - arg)); - if (id == 0) { - EMSG2(_(e_nogroup), arg); - break; - } else - syn_clear_one(id, syncing); - } - arg = skipwhite(arg_end); - } - } - redraw_curbuf_later(SOME_VALID); - syn_stack_free_all(curwin->w_s); /* Need to recompute all syntax. */ -} - -/* - * Clear one syntax group for the current buffer. - */ -static void syn_clear_one(int id, int syncing) -{ - synpat_T *spp; - int idx; - - /* Clear keywords only when not ":syn sync clear group-name" */ - if (!syncing) { - (void)syn_clear_keyword(id, &curwin->w_s->b_keywtab); - (void)syn_clear_keyword(id, &curwin->w_s->b_keywtab_ic); - } - - /* clear the patterns for "id" */ - for (idx = curwin->w_s->b_syn_patterns.ga_len; --idx >= 0; ) { - spp = &(SYN_ITEMS(curwin->w_s)[idx]); - if (spp->sp_syn.id != id || spp->sp_syncing != syncing) - continue; - syn_remove_pattern(curwin->w_s, idx); - } -} - -/* - * Handle ":syntax on" command. - */ -static void syn_cmd_on(exarg_T *eap, int syncing) -{ - syn_cmd_onoff(eap, "syntax"); -} - -/* - * Handle ":syntax enable" command. - */ -static void syn_cmd_enable(exarg_T *eap, int syncing) -{ - set_internal_string_var((char_u *)"syntax_cmd", (char_u *)"enable"); - syn_cmd_onoff(eap, "syntax"); - do_unlet((char_u *)"g:syntax_cmd", TRUE); -} - -/* - * Handle ":syntax reset" command. - */ -static void syn_cmd_reset(exarg_T *eap, int syncing) -{ - eap->nextcmd = check_nextcmd(eap->arg); - if (!eap->skip) { - set_internal_string_var((char_u *)"syntax_cmd", (char_u *)"reset"); - do_cmdline_cmd((char_u *)"runtime! syntax/syncolor.vim"); - do_unlet((char_u *)"g:syntax_cmd", TRUE); - } -} - -/* - * Handle ":syntax manual" command. - */ -static void syn_cmd_manual(exarg_T *eap, int syncing) -{ - syn_cmd_onoff(eap, "manual"); -} - -/* - * Handle ":syntax off" command. - */ -static void syn_cmd_off(exarg_T *eap, int syncing) -{ - syn_cmd_onoff(eap, "nosyntax"); -} - -static void syn_cmd_onoff(exarg_T *eap, char *name) -{ - char_u buf[100]; - - eap->nextcmd = check_nextcmd(eap->arg); - if (!eap->skip) { - STRCPY(buf, "so "); - vim_snprintf((char *)buf + 3, sizeof(buf) - 3, SYNTAX_FNAME, name); - do_cmdline_cmd(buf); - } -} - -/* - * Handle ":syntax [list]" command: list current syntax words. - */ -static void -syn_cmd_list ( - exarg_T *eap, - int syncing /* when TRUE: list syncing items */ -) -{ - char_u *arg = eap->arg; - int id; - char_u *arg_end; - - eap->nextcmd = find_nextcmd(arg); - if (eap->skip) - return; - - if (!syntax_present(curwin)) { - MSG(_(msg_no_items)); - return; - } - - if (syncing) { - if (curwin->w_s->b_syn_sync_flags & SF_CCOMMENT) { - MSG_PUTS(_("syncing on C-style comments")); - syn_lines_msg(); - syn_match_msg(); - return; - } else if (!(curwin->w_s->b_syn_sync_flags & SF_MATCH)) { - if (curwin->w_s->b_syn_sync_minlines == 0) - MSG_PUTS(_("no syncing")); - else { - MSG_PUTS(_("syncing starts ")); - msg_outnum(curwin->w_s->b_syn_sync_minlines); - MSG_PUTS(_(" lines before top line")); - syn_match_msg(); - } - return; - } - MSG_PUTS_TITLE(_("\n--- Syntax sync items ---")); - if (curwin->w_s->b_syn_sync_minlines > 0 - || curwin->w_s->b_syn_sync_maxlines > 0 - || curwin->w_s->b_syn_sync_linebreaks > 0) { - MSG_PUTS(_("\nsyncing on items")); - syn_lines_msg(); - syn_match_msg(); - } - } else - MSG_PUTS_TITLE(_("\n--- Syntax items ---")); - if (ends_excmd(*arg)) { - /* - * No argument: List all group IDs and all syntax clusters. - */ - for (id = 1; id <= highlight_ga.ga_len && !got_int; ++id) - syn_list_one(id, syncing, FALSE); - for (id = 0; id < curwin->w_s->b_syn_clusters.ga_len && !got_int; ++id) - syn_list_cluster(id); - } else { - /* - * List the group IDs and syntax clusters that are in the argument. - */ - while (!ends_excmd(*arg) && !got_int) { - arg_end = skiptowhite(arg); - if (*arg == '@') { - id = syn_scl_namen2id(arg + 1, (int)(arg_end - arg - 1)); - if (id == 0) - EMSG2(_("E392: No such syntax cluster: %s"), arg); - else - syn_list_cluster(id - SYNID_CLUSTER); - } else { - id = syn_namen2id(arg, (int)(arg_end - arg)); - if (id == 0) - EMSG2(_(e_nogroup), arg); - else - syn_list_one(id, syncing, TRUE); - } - arg = skipwhite(arg_end); - } - } - eap->nextcmd = check_nextcmd(arg); -} - -static void syn_lines_msg(void) -{ - if (curwin->w_s->b_syn_sync_maxlines > 0 - || curwin->w_s->b_syn_sync_minlines > 0) { - MSG_PUTS("; "); - if (curwin->w_s->b_syn_sync_minlines > 0) { - MSG_PUTS(_("minimal ")); - msg_outnum(curwin->w_s->b_syn_sync_minlines); - if (curwin->w_s->b_syn_sync_maxlines) - MSG_PUTS(", "); - } - if (curwin->w_s->b_syn_sync_maxlines > 0) { - MSG_PUTS(_("maximal ")); - msg_outnum(curwin->w_s->b_syn_sync_maxlines); - } - MSG_PUTS(_(" lines before top line")); - } -} - -static void syn_match_msg(void) -{ - if (curwin->w_s->b_syn_sync_linebreaks > 0) { - MSG_PUTS(_("; match ")); - msg_outnum(curwin->w_s->b_syn_sync_linebreaks); - MSG_PUTS(_(" line breaks")); - } -} - -static int last_matchgroup; - -struct name_list { - int flag; - char *name; -}; - -static void syn_list_flags(struct name_list *nl, int flags, int attr); - -/* - * List one syntax item, for ":syntax" or "syntax list syntax_name". - */ -static void -syn_list_one ( - int id, - int syncing, /* when TRUE: list syncing items */ - int link_only /* when TRUE; list link-only too */ -) -{ - int attr; - int idx; - int did_header = FALSE; - synpat_T *spp; - static struct name_list namelist1[] = - { - {HL_DISPLAY, "display"}, - {HL_CONTAINED, "contained"}, - {HL_ONELINE, "oneline"}, - {HL_KEEPEND, "keepend"}, - {HL_EXTEND, "extend"}, - {HL_EXCLUDENL, "excludenl"}, - {HL_TRANSP, "transparent"}, - {HL_FOLD, "fold"}, - {HL_CONCEAL, "conceal"}, - {HL_CONCEALENDS, "concealends"}, - {0, NULL} - }; - static struct name_list namelist2[] = - { - {HL_SKIPWHITE, "skipwhite"}, - {HL_SKIPNL, "skipnl"}, - {HL_SKIPEMPTY, "skipempty"}, - {0, NULL} - }; - - attr = hl_attr(HLF_D); /* highlight like directories */ - - /* list the keywords for "id" */ - if (!syncing) { - did_header = syn_list_keywords(id, &curwin->w_s->b_keywtab, FALSE, attr); - did_header = syn_list_keywords(id, &curwin->w_s->b_keywtab_ic, - did_header, attr); - } - - /* list the patterns for "id" */ - for (idx = 0; idx < curwin->w_s->b_syn_patterns.ga_len && !got_int; ++idx) { - spp = &(SYN_ITEMS(curwin->w_s)[idx]); - if (spp->sp_syn.id != id || spp->sp_syncing != syncing) - continue; - - (void)syn_list_header(did_header, 999, id); - did_header = TRUE; - last_matchgroup = 0; - if (spp->sp_type == SPTYPE_MATCH) { - put_pattern("match", ' ', spp, attr); - msg_putchar(' '); - } else if (spp->sp_type == SPTYPE_START) { - while (SYN_ITEMS(curwin->w_s)[idx].sp_type == SPTYPE_START) - put_pattern("start", '=', &SYN_ITEMS(curwin->w_s)[idx++], attr); - if (SYN_ITEMS(curwin->w_s)[idx].sp_type == SPTYPE_SKIP) - put_pattern("skip", '=', &SYN_ITEMS(curwin->w_s)[idx++], attr); - while (idx < curwin->w_s->b_syn_patterns.ga_len - && SYN_ITEMS(curwin->w_s)[idx].sp_type == SPTYPE_END) - put_pattern("end", '=', &SYN_ITEMS(curwin->w_s)[idx++], attr); - --idx; - msg_putchar(' '); - } - syn_list_flags(namelist1, spp->sp_flags, attr); - - if (spp->sp_cont_list != NULL) - put_id_list((char_u *)"contains", spp->sp_cont_list, attr); - - if (spp->sp_syn.cont_in_list != NULL) - put_id_list((char_u *)"containedin", - spp->sp_syn.cont_in_list, attr); - - if (spp->sp_next_list != NULL) { - put_id_list((char_u *)"nextgroup", spp->sp_next_list, attr); - syn_list_flags(namelist2, spp->sp_flags, attr); - } - if (spp->sp_flags & (HL_SYNC_HERE|HL_SYNC_THERE)) { - if (spp->sp_flags & HL_SYNC_HERE) - msg_puts_attr((char_u *)"grouphere", attr); - else - msg_puts_attr((char_u *)"groupthere", attr); - msg_putchar(' '); - if (spp->sp_sync_idx >= 0) - msg_outtrans(HL_TABLE()[SYN_ITEMS(curwin->w_s) - [spp->sp_sync_idx].sp_syn.id - 1].sg_name); - else - MSG_PUTS("NONE"); - msg_putchar(' '); - } - } - - /* list the link, if there is one */ - if (HL_TABLE()[id - 1].sg_link && (did_header || link_only) && !got_int) { - (void)syn_list_header(did_header, 999, id); - msg_puts_attr((char_u *)"links to", attr); - msg_putchar(' '); - msg_outtrans(HL_TABLE()[HL_TABLE()[id - 1].sg_link - 1].sg_name); - } -} - -static void syn_list_flags(struct name_list *nlist, int flags, int attr) -{ - int i; - - for (i = 0; nlist[i].flag != 0; ++i) - if (flags & nlist[i].flag) { - msg_puts_attr((char_u *)nlist[i].name, attr); - msg_putchar(' '); - } -} - -/* - * List one syntax cluster, for ":syntax" or "syntax list syntax_name". - */ -static void syn_list_cluster(int id) -{ - int endcol = 15; - - /* slight hack: roughly duplicate the guts of syn_list_header() */ - msg_putchar('\n'); - msg_outtrans(SYN_CLSTR(curwin->w_s)[id].scl_name); - - if (msg_col >= endcol) /* output at least one space */ - endcol = msg_col + 1; - if (Columns <= endcol) /* avoid hang for tiny window */ - endcol = Columns - 1; - - msg_advance(endcol); - if (SYN_CLSTR(curwin->w_s)[id].scl_list != NULL) { - put_id_list((char_u *)"cluster", SYN_CLSTR(curwin->w_s)[id].scl_list, - hl_attr(HLF_D)); - } else { - msg_puts_attr((char_u *)"cluster", hl_attr(HLF_D)); - msg_puts((char_u *)"=NONE"); - } -} - -static void put_id_list(char_u *name, short *list, int attr) -{ - short *p; - - msg_puts_attr(name, attr); - msg_putchar('='); - for (p = list; *p; ++p) { - if (*p >= SYNID_ALLBUT && *p < SYNID_TOP) { - if (p[1]) - MSG_PUTS("ALLBUT"); - else - MSG_PUTS("ALL"); - } else if (*p >= SYNID_TOP && *p < SYNID_CONTAINED) { - MSG_PUTS("TOP"); - } else if (*p >= SYNID_CONTAINED && *p < SYNID_CLUSTER) { - MSG_PUTS("CONTAINED"); - } else if (*p >= SYNID_CLUSTER) { - short scl_id = *p - SYNID_CLUSTER; - - msg_putchar('@'); - msg_outtrans(SYN_CLSTR(curwin->w_s)[scl_id].scl_name); - } else - msg_outtrans(HL_TABLE()[*p - 1].sg_name); - if (p[1]) - msg_putchar(','); - } - msg_putchar(' '); -} - -static void put_pattern(char *s, int c, synpat_T *spp, int attr) -{ - long n; - int mask; - int first; - static char *sepchars = "/+=-#@\"|'^&"; - int i; - - /* May have to write "matchgroup=group" */ - if (last_matchgroup != spp->sp_syn_match_id) { - last_matchgroup = spp->sp_syn_match_id; - msg_puts_attr((char_u *)"matchgroup", attr); - msg_putchar('='); - if (last_matchgroup == 0) - msg_outtrans((char_u *)"NONE"); - else - msg_outtrans(HL_TABLE()[last_matchgroup - 1].sg_name); - msg_putchar(' '); - } - - /* output the name of the pattern and an '=' or ' ' */ - msg_puts_attr((char_u *)s, attr); - msg_putchar(c); - - /* output the pattern, in between a char that is not in the pattern */ - for (i = 0; vim_strchr(spp->sp_pattern, sepchars[i]) != NULL; ) - if (sepchars[++i] == NUL) { - i = 0; /* no good char found, just use the first one */ - break; - } - msg_putchar(sepchars[i]); - msg_outtrans(spp->sp_pattern); - msg_putchar(sepchars[i]); - - /* output any pattern options */ - first = TRUE; - for (i = 0; i < SPO_COUNT; ++i) { - mask = (1 << i); - if (spp->sp_off_flags & (mask + (mask << SPO_COUNT))) { - if (!first) - msg_putchar(','); /* separate with commas */ - msg_puts((char_u *)spo_name_tab[i]); - n = spp->sp_offsets[i]; - if (i != SPO_LC_OFF) { - if (spp->sp_off_flags & mask) - msg_putchar('s'); - else - msg_putchar('e'); - if (n > 0) - msg_putchar('+'); - } - if (n || i == SPO_LC_OFF) - msg_outnum(n); - first = FALSE; - } - } - msg_putchar(' '); -} - -/* - * List or clear the keywords for one syntax group. - * Return TRUE if the header has been printed. - */ -static int -syn_list_keywords ( - int id, - hashtab_T *ht, - int did_header, /* header has already been printed */ - int attr -) -{ - int outlen; - hashitem_T *hi; - keyentry_T *kp; - int todo; - int prev_contained = 0; - short *prev_next_list = NULL; - short *prev_cont_in_list = NULL; - int prev_skipnl = 0; - int prev_skipwhite = 0; - int prev_skipempty = 0; - - /* - * Unfortunately, this list of keywords is not sorted on alphabet but on - * hash value... - */ - todo = (int)ht->ht_used; - for (hi = ht->ht_array; todo > 0 && !got_int; ++hi) { - if (!HASHITEM_EMPTY(hi)) { - --todo; - for (kp = HI2KE(hi); kp != NULL && !got_int; kp = kp->ke_next) { - if (kp->k_syn.id == id) { - if (prev_contained != (kp->flags & HL_CONTAINED) - || prev_skipnl != (kp->flags & HL_SKIPNL) - || prev_skipwhite != (kp->flags & HL_SKIPWHITE) - || prev_skipempty != (kp->flags & HL_SKIPEMPTY) - || prev_cont_in_list != kp->k_syn.cont_in_list - || prev_next_list != kp->next_list) - outlen = 9999; - else - outlen = (int)STRLEN(kp->keyword); - /* output "contained" and "nextgroup" on each line */ - if (syn_list_header(did_header, outlen, id)) { - prev_contained = 0; - prev_next_list = NULL; - prev_cont_in_list = NULL; - prev_skipnl = 0; - prev_skipwhite = 0; - prev_skipempty = 0; - } - did_header = TRUE; - if (prev_contained != (kp->flags & HL_CONTAINED)) { - msg_puts_attr((char_u *)"contained", attr); - msg_putchar(' '); - prev_contained = (kp->flags & HL_CONTAINED); - } - if (kp->k_syn.cont_in_list != prev_cont_in_list) { - put_id_list((char_u *)"containedin", - kp->k_syn.cont_in_list, attr); - msg_putchar(' '); - prev_cont_in_list = kp->k_syn.cont_in_list; - } - if (kp->next_list != prev_next_list) { - put_id_list((char_u *)"nextgroup", kp->next_list, attr); - msg_putchar(' '); - prev_next_list = kp->next_list; - if (kp->flags & HL_SKIPNL) { - msg_puts_attr((char_u *)"skipnl", attr); - msg_putchar(' '); - prev_skipnl = (kp->flags & HL_SKIPNL); - } - if (kp->flags & HL_SKIPWHITE) { - msg_puts_attr((char_u *)"skipwhite", attr); - msg_putchar(' '); - prev_skipwhite = (kp->flags & HL_SKIPWHITE); - } - if (kp->flags & HL_SKIPEMPTY) { - msg_puts_attr((char_u *)"skipempty", attr); - msg_putchar(' '); - prev_skipempty = (kp->flags & HL_SKIPEMPTY); - } - } - msg_outtrans(kp->keyword); - } - } - } - } - - return did_header; -} - -static void syn_clear_keyword(int id, hashtab_T *ht) -{ - hashitem_T *hi; - keyentry_T *kp; - keyentry_T *kp_prev; - keyentry_T *kp_next; - int todo; - - hash_lock(ht); - todo = (int)ht->ht_used; - for (hi = ht->ht_array; todo > 0; ++hi) { - if (!HASHITEM_EMPTY(hi)) { - --todo; - kp_prev = NULL; - for (kp = HI2KE(hi); kp != NULL; ) { - if (kp->k_syn.id == id) { - kp_next = kp->ke_next; - if (kp_prev == NULL) { - if (kp_next == NULL) - hash_remove(ht, hi); - else - hi->hi_key = KE2HIKEY(kp_next); - } else - kp_prev->ke_next = kp_next; - free(kp->next_list); - free(kp->k_syn.cont_in_list); - free(kp); - kp = kp_next; - } else { - kp_prev = kp; - kp = kp->ke_next; - } - } - } - } - hash_unlock(ht); -} - -/* - * Clear a whole keyword table. - */ -static void clear_keywtab(hashtab_T *ht) -{ - hashitem_T *hi; - int todo; - keyentry_T *kp; - keyentry_T *kp_next; - - todo = (int)ht->ht_used; - for (hi = ht->ht_array; todo > 0; ++hi) { - if (!HASHITEM_EMPTY(hi)) { - --todo; - for (kp = HI2KE(hi); kp != NULL; kp = kp_next) { - kp_next = kp->ke_next; - free(kp->next_list); - free(kp->k_syn.cont_in_list); - free(kp); - } - } - } - hash_clear(ht); - hash_init(ht); -} - -/* - * Add a keyword to the list of keywords. - */ -static void -add_keyword ( - char_u *name, /* name of keyword */ - int id, /* group ID for this keyword */ - int flags, /* flags for this keyword */ - short *cont_in_list, /* containedin for this keyword */ - short *next_list, /* nextgroup for this keyword */ - int conceal_char -) -{ - keyentry_T *kp; - hashtab_T *ht; - hashitem_T *hi; - char_u *name_ic; - long_u hash; - char_u name_folded[MAXKEYWLEN + 1]; - - if (curwin->w_s->b_syn_ic) - name_ic = str_foldcase(name, (int)STRLEN(name), - name_folded, MAXKEYWLEN + 1); - else - name_ic = name; - kp = (keyentry_T *)alloc((int)(sizeof(keyentry_T) + STRLEN(name_ic))); - STRCPY(kp->keyword, name_ic); - kp->k_syn.id = id; - kp->k_syn.inc_tag = current_syn_inc_tag; - kp->flags = flags; - kp->k_char = conceal_char; - kp->k_syn.cont_in_list = copy_id_list(cont_in_list); - if (cont_in_list != NULL) - curwin->w_s->b_syn_containedin = TRUE; - kp->next_list = copy_id_list(next_list); - - if (curwin->w_s->b_syn_ic) - ht = &curwin->w_s->b_keywtab_ic; - else - ht = &curwin->w_s->b_keywtab; - - hash = hash_hash(kp->keyword); - hi = hash_lookup(ht, kp->keyword, hash); - if (HASHITEM_EMPTY(hi)) { - /* new keyword, add to hashtable */ - kp->ke_next = NULL; - hash_add_item(ht, hi, kp->keyword, hash); - } else { - /* keyword already exists, prepend to list */ - kp->ke_next = HI2KE(hi); - hi->hi_key = KE2HIKEY(kp); - } -} - -/* - * Get the start and end of the group name argument. - * Return a pointer to the first argument. - * Return NULL if the end of the command was found instead of further args. - */ -static char_u * -get_group_name ( - char_u *arg, /* start of the argument */ - char_u **name_end /* pointer to end of the name */ -) -{ - char_u *rest; - - *name_end = skiptowhite(arg); - rest = skipwhite(*name_end); - - /* - * Check if there are enough arguments. The first argument may be a - * pattern, where '|' is allowed, so only check for NUL. - */ - if (ends_excmd(*arg) || *rest == NUL) - return NULL; - return rest; -} - -/* - * Check for syntax command option arguments. - * This can be called at any place in the list of arguments, and just picks - * out the arguments that are known. Can be called several times in a row to - * collect all options in between other arguments. - * Return a pointer to the next argument (which isn't an option). - * Return NULL for any error; - */ -static char_u * -get_syn_options ( - char_u *arg, /* next argument to be checked */ - syn_opt_arg_T *opt, /* various things */ - int *conceal_char -) -{ - char_u *gname_start, *gname; - int syn_id; - int len; - char *p; - int i; - int fidx; - static struct flag { - char *name; - int argtype; - int flags; - } flagtab[] = { {"cCoOnNtTaAiInNeEdD", 0, HL_CONTAINED}, - {"oOnNeElLiInNeE", 0, HL_ONELINE}, - {"kKeEeEpPeEnNdD", 0, HL_KEEPEND}, - {"eExXtTeEnNdD", 0, HL_EXTEND}, - {"eExXcClLuUdDeEnNlL", 0, HL_EXCLUDENL}, - {"tTrRaAnNsSpPaArReEnNtT", 0, HL_TRANSP}, - {"sSkKiIpPnNlL", 0, HL_SKIPNL}, - {"sSkKiIpPwWhHiItTeE", 0, HL_SKIPWHITE}, - {"sSkKiIpPeEmMpPtTyY", 0, HL_SKIPEMPTY}, - {"gGrRoOuUpPhHeErReE", 0, HL_SYNC_HERE}, - {"gGrRoOuUpPtThHeErReE", 0, HL_SYNC_THERE}, - {"dDiIsSpPlLaAyY", 0, HL_DISPLAY}, - {"fFoOlLdD", 0, HL_FOLD}, - {"cCoOnNcCeEaAlL", 0, HL_CONCEAL}, - {"cCoOnNcCeEaAlLeEnNdDsS", 0, HL_CONCEALENDS}, - {"cCcChHaArR", 11, 0}, - {"cCoOnNtTaAiInNsS", 1, 0}, - {"cCoOnNtTaAiInNeEdDiInN", 2, 0}, - {"nNeExXtTgGrRoOuUpP", 3, 0},}; - static char *first_letters = "cCoOkKeEtTsSgGdDfFnN"; - - if (arg == NULL) /* already detected error */ - return NULL; - - if (curwin->w_s->b_syn_conceal) - opt->flags |= HL_CONCEAL; - - for (;; ) { - /* - * This is used very often when a large number of keywords is defined. - * Need to skip quickly when no option name is found. - * Also avoid tolower(), it's slow. - */ - if (strchr(first_letters, *arg) == NULL) - break; - - for (fidx = sizeof(flagtab) / sizeof(struct flag); --fidx >= 0; ) { - p = flagtab[fidx].name; - for (i = 0, len = 0; p[i] != NUL; i += 2, ++len) - if (arg[len] != p[i] && arg[len] != p[i + 1]) - break; - if (p[i] == NUL && (vim_iswhite(arg[len]) - || (flagtab[fidx].argtype > 0 - ? arg[len] == '=' - : ends_excmd(arg[len])))) { - if (opt->keyword - && (flagtab[fidx].flags == HL_DISPLAY - || flagtab[fidx].flags == HL_FOLD - || flagtab[fidx].flags == HL_EXTEND)) - /* treat "display", "fold" and "extend" as a keyword */ - fidx = -1; - break; - } - } - if (fidx < 0) /* no match found */ - break; - - if (flagtab[fidx].argtype == 1) { - if (!opt->has_cont_list) { - EMSG(_("E395: contains argument not accepted here")); - return NULL; - } - if (get_id_list(&arg, 8, &opt->cont_list) == FAIL) - return NULL; - } else if (flagtab[fidx].argtype == 2) { - if (get_id_list(&arg, 11, &opt->cont_in_list) == FAIL) - return NULL; - } else if (flagtab[fidx].argtype == 3) { - if (get_id_list(&arg, 9, &opt->next_list) == FAIL) - return NULL; - } else if (flagtab[fidx].argtype == 11 && arg[5] == '=') { - /* cchar=? */ - if (has_mbyte) { - *conceal_char = mb_ptr2char(arg + 6); - arg += mb_ptr2len(arg + 6) - 1; - } else { - *conceal_char = arg[6]; - } - if (!vim_isprintc_strict(*conceal_char)) { - EMSG(_("E844: invalid cchar value")); - return NULL; - } - arg = skipwhite(arg + 7); - } else { - opt->flags |= flagtab[fidx].flags; - arg = skipwhite(arg + len); - - if (flagtab[fidx].flags == HL_SYNC_HERE - || flagtab[fidx].flags == HL_SYNC_THERE) { - if (opt->sync_idx == NULL) { - EMSG(_("E393: group[t]here not accepted here")); - return NULL; - } - gname_start = arg; - arg = skiptowhite(arg); - if (gname_start == arg) - return NULL; - gname = vim_strnsave(gname_start, (int)(arg - gname_start)); - if (gname == NULL) - return NULL; - if (STRCMP(gname, "NONE") == 0) - *opt->sync_idx = NONE_IDX; - else { - syn_id = syn_name2id(gname); - for (i = curwin->w_s->b_syn_patterns.ga_len; --i >= 0; ) - if (SYN_ITEMS(curwin->w_s)[i].sp_syn.id == syn_id - && SYN_ITEMS(curwin->w_s)[i].sp_type == SPTYPE_START) { - *opt->sync_idx = i; - break; - } - if (i < 0) { - EMSG2(_("E394: Didn't find region item for %s"), gname); - free(gname); - return NULL; - } - } - - free(gname); - arg = skipwhite(arg); - } else if (flagtab[fidx].flags == HL_FOLD - && foldmethodIsSyntax(curwin)) - /* Need to update folds later. */ - foldUpdateAll(curwin); - } - } - - return arg; -} - -/* - * Adjustments to syntax item when declared in a ":syn include"'d file. - * Set the contained flag, and if the item is not already contained, add it - * to the specified top-level group, if any. - */ -static void syn_incl_toplevel(int id, int *flagsp) -{ - if ((*flagsp & HL_CONTAINED) || curwin->w_s->b_syn_topgrp == 0) - return; - *flagsp |= HL_CONTAINED; - if (curwin->w_s->b_syn_topgrp >= SYNID_CLUSTER) { - /* We have to alloc this, because syn_combine_list() will free it. */ - short *grp_list = (short *)alloc((unsigned)(2 * sizeof(short))); - int tlg_id = curwin->w_s->b_syn_topgrp - SYNID_CLUSTER; - - grp_list[0] = id; - grp_list[1] = 0; - syn_combine_list(&SYN_CLSTR(curwin->w_s)[tlg_id].scl_list, &grp_list, - CLUSTER_ADD); - } -} - -/* - * Handle ":syntax include [@{group-name}] filename" command. - */ -static void syn_cmd_include(exarg_T *eap, int syncing) -{ - char_u *arg = eap->arg; - int sgl_id = 1; - char_u *group_name_end; - char_u *rest; - char_u *errormsg = NULL; - int prev_toplvl_grp; - int prev_syn_inc_tag; - int source = FALSE; - - eap->nextcmd = find_nextcmd(arg); - if (eap->skip) - return; - - if (arg[0] == '@') { - ++arg; - rest = get_group_name(arg, &group_name_end); - if (rest == NULL) { - EMSG((char_u *)_("E397: Filename required")); - return; - } - sgl_id = syn_check_cluster(arg, (int)(group_name_end - arg)); - if (sgl_id == 0) - return; - /* separate_nextcmd() and expand_filename() depend on this */ - eap->arg = rest; - } - - /* - * Everything that's left, up to the next command, should be the - * filename to include. - */ - eap->argt |= (XFILE | NOSPC); - separate_nextcmd(eap); - if (*eap->arg == '<' || *eap->arg == '$' || path_is_absolute_path(eap->arg)) { - /* For an absolute path, "$VIM/..." or "<sfile>.." we ":source" the - * file. Need to expand the file name first. In other cases - * ":runtime!" is used. */ - source = TRUE; - if (expand_filename(eap, syn_cmdlinep, &errormsg) == FAIL) { - if (errormsg != NULL) - EMSG(errormsg); - return; - } - } - - /* - * Save and restore the existing top-level grouplist id and ":syn - * include" tag around the actual inclusion. - */ - if (running_syn_inc_tag >= MAX_SYN_INC_TAG) { - EMSG((char_u *)_("E847: Too many syntax includes")); - return; - } - prev_syn_inc_tag = current_syn_inc_tag; - current_syn_inc_tag = ++running_syn_inc_tag; - prev_toplvl_grp = curwin->w_s->b_syn_topgrp; - curwin->w_s->b_syn_topgrp = sgl_id; - if (source ? do_source(eap->arg, FALSE, DOSO_NONE) == FAIL - : source_runtime(eap->arg, TRUE) == FAIL) - EMSG2(_(e_notopen), eap->arg); - curwin->w_s->b_syn_topgrp = prev_toplvl_grp; - current_syn_inc_tag = prev_syn_inc_tag; -} - -/* - * Handle ":syntax keyword {group-name} [{option}] keyword .." command. - */ -static void syn_cmd_keyword(exarg_T *eap, int syncing) -{ - char_u *arg = eap->arg; - char_u *group_name_end; - int syn_id; - char_u *rest; - char_u *keyword_copy = NULL; - char_u *p; - char_u *kw; - syn_opt_arg_T syn_opt_arg; - int cnt; - int conceal_char = NUL; - - rest = get_group_name(arg, &group_name_end); - - if (rest != NULL) { - syn_id = syn_check_group(arg, (int)(group_name_end - arg)); - if (syn_id != 0) - /* allocate a buffer, for removing backslashes in the keyword */ - keyword_copy = alloc((unsigned)STRLEN(rest) + 1); - syn_opt_arg.flags = 0; - syn_opt_arg.keyword = TRUE; - syn_opt_arg.sync_idx = NULL; - syn_opt_arg.has_cont_list = FALSE; - syn_opt_arg.cont_in_list = NULL; - syn_opt_arg.next_list = NULL; - - /* - * The options given apply to ALL keywords, so all options must be - * found before keywords can be created. - * 1: collect the options and copy the keywords to keyword_copy. - */ - cnt = 0; - p = keyword_copy; - for (; rest != NULL && !ends_excmd(*rest); rest = skipwhite(rest)) { - rest = get_syn_options(rest, &syn_opt_arg, &conceal_char); - if (rest == NULL || ends_excmd(*rest)) - break; - /* Copy the keyword, removing backslashes, and add a NUL. */ - while (*rest != NUL && !vim_iswhite(*rest)) { - if (*rest == '\\' && rest[1] != NUL) - ++rest; - *p++ = *rest++; - } - *p++ = NUL; - ++cnt; - } - - if (!eap->skip) { - /* Adjust flags for use of ":syn include". */ - syn_incl_toplevel(syn_id, &syn_opt_arg.flags); - - /* - * 2: Add an entry for each keyword. - */ - for (kw = keyword_copy; --cnt >= 0; kw += STRLEN(kw) + 1) { - for (p = vim_strchr(kw, '[');; ) { - if (p != NULL) - *p = NUL; - add_keyword(kw, syn_id, syn_opt_arg.flags, - syn_opt_arg.cont_in_list, - syn_opt_arg.next_list, conceal_char); - if (p == NULL) - break; - if (p[1] == NUL) { - EMSG2(_("E789: Missing ']': %s"), kw); - kw = p + 2; /* skip over the NUL */ - break; - } - if (p[1] == ']') { - kw = p + 1; /* skip over the "]" */ - break; - } - if (has_mbyte) { - int l = (*mb_ptr2len)(p + 1); - - memmove(p, p + 1, l); - p += l; - } else { - p[0] = p[1]; - ++p; - } - } - } - } - - free(keyword_copy); - free(syn_opt_arg.cont_in_list); - free(syn_opt_arg.next_list); - } - - if (rest != NULL) - eap->nextcmd = check_nextcmd(rest); - else - EMSG2(_(e_invarg2), arg); - - redraw_curbuf_later(SOME_VALID); - syn_stack_free_all(curwin->w_s); /* Need to recompute all syntax. */ -} - -/* - * Handle ":syntax match {name} [{options}] {pattern} [{options}]". - * - * Also ":syntax sync match {name} [[grouphere | groupthere] {group-name}] .." - */ -static void -syn_cmd_match ( - exarg_T *eap, - int syncing /* TRUE for ":syntax sync match .. " */ -) -{ - char_u *arg = eap->arg; - char_u *group_name_end; - char_u *rest; - synpat_T item; /* the item found in the line */ - int syn_id; - int idx; - syn_opt_arg_T syn_opt_arg; - int sync_idx = 0; - int conceal_char = NUL; - - /* Isolate the group name, check for validity */ - rest = get_group_name(arg, &group_name_end); - - /* Get options before the pattern */ - syn_opt_arg.flags = 0; - syn_opt_arg.keyword = FALSE; - syn_opt_arg.sync_idx = syncing ? &sync_idx : NULL; - syn_opt_arg.has_cont_list = TRUE; - syn_opt_arg.cont_list = NULL; - syn_opt_arg.cont_in_list = NULL; - syn_opt_arg.next_list = NULL; - rest = get_syn_options(rest, &syn_opt_arg, &conceal_char); - - /* get the pattern. */ - init_syn_patterns(); - memset(&item, 0, sizeof(item)); - rest = get_syn_pattern(rest, &item); - if (vim_regcomp_had_eol() && !(syn_opt_arg.flags & HL_EXCLUDENL)) - syn_opt_arg.flags |= HL_HAS_EOL; - - /* Get options after the pattern */ - rest = get_syn_options(rest, &syn_opt_arg, &conceal_char); - - if (rest != NULL) { /* all arguments are valid */ - /* - * Check for trailing command and illegal trailing arguments. - */ - eap->nextcmd = check_nextcmd(rest); - if (!ends_excmd(*rest) || eap->skip) - rest = NULL; - else { - ga_grow(&curwin->w_s->b_syn_patterns, 1); - if ((syn_id = syn_check_group(arg, (int)(group_name_end - arg))) != 0) { - syn_incl_toplevel(syn_id, &syn_opt_arg.flags); - /* - * Store the pattern in the syn_items list - */ - idx = curwin->w_s->b_syn_patterns.ga_len; - SYN_ITEMS(curwin->w_s)[idx] = item; - SYN_ITEMS(curwin->w_s)[idx].sp_syncing = syncing; - SYN_ITEMS(curwin->w_s)[idx].sp_type = SPTYPE_MATCH; - SYN_ITEMS(curwin->w_s)[idx].sp_syn.id = syn_id; - SYN_ITEMS(curwin->w_s)[idx].sp_syn.inc_tag = current_syn_inc_tag; - SYN_ITEMS(curwin->w_s)[idx].sp_flags = syn_opt_arg.flags; - SYN_ITEMS(curwin->w_s)[idx].sp_sync_idx = sync_idx; - SYN_ITEMS(curwin->w_s)[idx].sp_cont_list = syn_opt_arg.cont_list; - SYN_ITEMS(curwin->w_s)[idx].sp_syn.cont_in_list = - syn_opt_arg.cont_in_list; - SYN_ITEMS(curwin->w_s)[idx].sp_cchar = conceal_char; - if (syn_opt_arg.cont_in_list != NULL) - curwin->w_s->b_syn_containedin = TRUE; - SYN_ITEMS(curwin->w_s)[idx].sp_next_list = syn_opt_arg.next_list; - ++curwin->w_s->b_syn_patterns.ga_len; - - /* remember that we found a match for syncing on */ - if (syn_opt_arg.flags & (HL_SYNC_HERE|HL_SYNC_THERE)) - curwin->w_s->b_syn_sync_flags |= SF_MATCH; - if (syn_opt_arg.flags & HL_FOLD) - ++curwin->w_s->b_syn_folditems; - - redraw_curbuf_later(SOME_VALID); - syn_stack_free_all(curwin->w_s); /* Need to recompute all syntax. */ - return; /* don't free the progs and patterns now */ - } - } - } - - /* - * Something failed, free the allocated memory. - */ - vim_regfree(item.sp_prog); - free(item.sp_pattern); - free(syn_opt_arg.cont_list); - free(syn_opt_arg.cont_in_list); - free(syn_opt_arg.next_list); - - if (rest == NULL) - EMSG2(_(e_invarg2), arg); -} - -/* - * Handle ":syntax region {group-name} [matchgroup={group-name}] - * start {start} .. [skip {skip}] end {end} .. [{options}]". - */ -static void -syn_cmd_region ( - exarg_T *eap, - int syncing /* TRUE for ":syntax sync region .." */ -) -{ - char_u *arg = eap->arg; - char_u *group_name_end; - char_u *rest; /* next arg, NULL on error */ - char_u *key_end; - char_u *key = NULL; - char_u *p; - int item; -#define ITEM_START 0 -#define ITEM_SKIP 1 -#define ITEM_END 2 -#define ITEM_MATCHGROUP 3 - struct pat_ptr { - synpat_T *pp_synp; /* pointer to syn_pattern */ - int pp_matchgroup_id; /* matchgroup ID */ - struct pat_ptr *pp_next; /* pointer to next pat_ptr */ - } *(pat_ptrs[3]); - /* patterns found in the line */ - struct pat_ptr *ppp; - struct pat_ptr *ppp_next; - int pat_count = 0; /* nr of syn_patterns found */ - int syn_id; - int matchgroup_id = 0; - int not_enough = FALSE; /* not enough arguments */ - int illegal = FALSE; /* illegal arguments */ - int success = FALSE; - int idx; - syn_opt_arg_T syn_opt_arg; - int conceal_char = NUL; - - /* Isolate the group name, check for validity */ - rest = get_group_name(arg, &group_name_end); - - pat_ptrs[0] = NULL; - pat_ptrs[1] = NULL; - pat_ptrs[2] = NULL; - - init_syn_patterns(); - - syn_opt_arg.flags = 0; - syn_opt_arg.keyword = FALSE; - syn_opt_arg.sync_idx = NULL; - syn_opt_arg.has_cont_list = TRUE; - syn_opt_arg.cont_list = NULL; - syn_opt_arg.cont_in_list = NULL; - syn_opt_arg.next_list = NULL; - - /* - * get the options, patterns and matchgroup. - */ - while (rest != NULL && !ends_excmd(*rest)) { - /* Check for option arguments */ - rest = get_syn_options(rest, &syn_opt_arg, &conceal_char); - if (rest == NULL || ends_excmd(*rest)) - break; - - /* must be a pattern or matchgroup then */ - key_end = rest; - while (*key_end && !vim_iswhite(*key_end) && *key_end != '=') - ++key_end; - free(key); - key = vim_strnsave_up(rest, (int)(key_end - rest)); - if (key == NULL) { /* out of memory */ - rest = NULL; - break; - } - if (STRCMP(key, "MATCHGROUP") == 0) - item = ITEM_MATCHGROUP; - else if (STRCMP(key, "START") == 0) - item = ITEM_START; - else if (STRCMP(key, "END") == 0) - item = ITEM_END; - else if (STRCMP(key, "SKIP") == 0) { - if (pat_ptrs[ITEM_SKIP] != NULL) { /* one skip pattern allowed */ - illegal = TRUE; - break; - } - item = ITEM_SKIP; - } else - break; - rest = skipwhite(key_end); - if (*rest != '=') { - rest = NULL; - EMSG2(_("E398: Missing '=': %s"), arg); - break; - } - rest = skipwhite(rest + 1); - if (*rest == NUL) { - not_enough = TRUE; - break; - } - - if (item == ITEM_MATCHGROUP) { - p = skiptowhite(rest); - if ((p - rest == 4 && STRNCMP(rest, "NONE", 4) == 0) || eap->skip) - matchgroup_id = 0; - else { - matchgroup_id = syn_check_group(rest, (int)(p - rest)); - if (matchgroup_id == 0) { - illegal = TRUE; - break; - } - } - rest = skipwhite(p); - } else { - /* - * Allocate room for a syn_pattern, and link it in the list of - * syn_patterns for this item, at the start (because the list is - * used from end to start). - */ - ppp = (struct pat_ptr *)alloc((unsigned)sizeof(struct pat_ptr)); - ppp->pp_next = pat_ptrs[item]; - pat_ptrs[item] = ppp; - ppp->pp_synp = xcalloc(1, sizeof(synpat_T)); - - /* - * Get the syntax pattern and the following offset(s). - */ - /* Enable the appropriate \z specials. */ - if (item == ITEM_START) - reg_do_extmatch = REX_SET; - else if (item == ITEM_SKIP || item == ITEM_END) - reg_do_extmatch = REX_USE; - rest = get_syn_pattern(rest, ppp->pp_synp); - reg_do_extmatch = 0; - if (item == ITEM_END && vim_regcomp_had_eol() - && !(syn_opt_arg.flags & HL_EXCLUDENL)) - ppp->pp_synp->sp_flags |= HL_HAS_EOL; - ppp->pp_matchgroup_id = matchgroup_id; - ++pat_count; - } - } - free(key); - if (illegal || not_enough) - rest = NULL; - - /* - * Must have a "start" and "end" pattern. - */ - if (rest != NULL && (pat_ptrs[ITEM_START] == NULL || - pat_ptrs[ITEM_END] == NULL)) { - not_enough = TRUE; - rest = NULL; - } - - if (rest != NULL) { - /* - * Check for trailing garbage or command. - * If OK, add the item. - */ - eap->nextcmd = check_nextcmd(rest); - if (!ends_excmd(*rest) || eap->skip) - rest = NULL; - else { - ga_grow(&(curwin->w_s->b_syn_patterns), pat_count); - if ((syn_id = syn_check_group(arg, (int)(group_name_end - arg))) != 0) { - syn_incl_toplevel(syn_id, &syn_opt_arg.flags); - /* - * Store the start/skip/end in the syn_items list - */ - idx = curwin->w_s->b_syn_patterns.ga_len; - for (item = ITEM_START; item <= ITEM_END; ++item) { - for (ppp = pat_ptrs[item]; ppp != NULL; ppp = ppp->pp_next) { - SYN_ITEMS(curwin->w_s)[idx] = *(ppp->pp_synp); - SYN_ITEMS(curwin->w_s)[idx].sp_syncing = syncing; - SYN_ITEMS(curwin->w_s)[idx].sp_type = - (item == ITEM_START) ? SPTYPE_START : - (item == ITEM_SKIP) ? SPTYPE_SKIP : SPTYPE_END; - SYN_ITEMS(curwin->w_s)[idx].sp_flags |= syn_opt_arg.flags; - SYN_ITEMS(curwin->w_s)[idx].sp_syn.id = syn_id; - SYN_ITEMS(curwin->w_s)[idx].sp_syn.inc_tag = - current_syn_inc_tag; - SYN_ITEMS(curwin->w_s)[idx].sp_syn_match_id = - ppp->pp_matchgroup_id; - SYN_ITEMS(curwin->w_s)[idx].sp_cchar = conceal_char; - if (item == ITEM_START) { - SYN_ITEMS(curwin->w_s)[idx].sp_cont_list = - syn_opt_arg.cont_list; - SYN_ITEMS(curwin->w_s)[idx].sp_syn.cont_in_list = - syn_opt_arg.cont_in_list; - if (syn_opt_arg.cont_in_list != NULL) - curwin->w_s->b_syn_containedin = TRUE; - SYN_ITEMS(curwin->w_s)[idx].sp_next_list = - syn_opt_arg.next_list; - } - ++curwin->w_s->b_syn_patterns.ga_len; - ++idx; - if (syn_opt_arg.flags & HL_FOLD) - ++curwin->w_s->b_syn_folditems; - } - } - - redraw_curbuf_later(SOME_VALID); - syn_stack_free_all(curwin->w_s); /* Need to recompute all syntax. */ - success = TRUE; /* don't free the progs and patterns now */ - } - } - } - - /* - * Free the allocated memory. - */ - for (item = ITEM_START; item <= ITEM_END; ++item) - for (ppp = pat_ptrs[item]; ppp != NULL; ppp = ppp_next) { - if (!success) { - vim_regfree(ppp->pp_synp->sp_prog); - free(ppp->pp_synp->sp_pattern); - } - free(ppp->pp_synp); - ppp_next = ppp->pp_next; - free(ppp); - } - - if (!success) { - free(syn_opt_arg.cont_list); - free(syn_opt_arg.cont_in_list); - free(syn_opt_arg.next_list); - if (not_enough) - EMSG2(_("E399: Not enough arguments: syntax region %s"), arg); - else if (illegal || rest == NULL) - EMSG2(_(e_invarg2), arg); - } -} - -/* - * A simple syntax group ID comparison function suitable for use in qsort() - */ -static int syn_compare_stub(const void *v1, const void *v2) -{ - const short *s1 = v1; - const short *s2 = v2; - - return *s1 > *s2 ? 1 : *s1 < *s2 ? -1 : 0; -} - -/* - * Combines lists of syntax clusters. - * *clstr1 and *clstr2 must both be allocated memory; they will be consumed. - */ -static void syn_combine_list(short **clstr1, short **clstr2, int list_op) -{ - int count1 = 0; - int count2 = 0; - short *g1; - short *g2; - short *clstr = NULL; - int count; - int round; - - /* - * Handle degenerate cases. - */ - if (*clstr2 == NULL) - return; - if (*clstr1 == NULL || list_op == CLUSTER_REPLACE) { - if (list_op == CLUSTER_REPLACE) - free(*clstr1); - if (list_op == CLUSTER_REPLACE || list_op == CLUSTER_ADD) - *clstr1 = *clstr2; - else - free(*clstr2); - return; - } - - for (g1 = *clstr1; *g1; g1++) - ++count1; - for (g2 = *clstr2; *g2; g2++) - ++count2; - - /* - * For speed purposes, sort both lists. - */ - qsort(*clstr1, (size_t)count1, sizeof(short), syn_compare_stub); - qsort(*clstr2, (size_t)count2, sizeof(short), syn_compare_stub); - - /* - * We proceed in two passes; in round 1, we count the elements to place - * in the new list, and in round 2, we allocate and populate the new - * list. For speed, we use a mergesort-like method, adding the smaller - * of the current elements in each list to the new list. - */ - for (round = 1; round <= 2; round++) { - g1 = *clstr1; - g2 = *clstr2; - count = 0; - - /* - * First, loop through the lists until one of them is empty. - */ - while (*g1 && *g2) { - /* - * We always want to add from the first list. - */ - if (*g1 < *g2) { - if (round == 2) - clstr[count] = *g1; - count++; - g1++; - continue; - } - /* - * We only want to add from the second list if we're adding the - * lists. - */ - if (list_op == CLUSTER_ADD) { - if (round == 2) - clstr[count] = *g2; - count++; - } - if (*g1 == *g2) - g1++; - g2++; - } - - /* - * Now add the leftovers from whichever list didn't get finished - * first. As before, we only want to add from the second list if - * we're adding the lists. - */ - for (; *g1; g1++, count++) - if (round == 2) - clstr[count] = *g1; - if (list_op == CLUSTER_ADD) - for (; *g2; g2++, count++) - if (round == 2) - clstr[count] = *g2; - - if (round == 1) { - /* - * If the group ended up empty, we don't need to allocate any - * space for it. - */ - if (count == 0) { - clstr = NULL; - break; - } - clstr = (short *)alloc((unsigned)((count + 1) * sizeof(short))); - clstr[count] = 0; - } - } - - /* - * Finally, put the new list in place. - */ - free(*clstr1); - free(*clstr2); - *clstr1 = clstr; -} - -/* - * Lookup a syntax cluster name and return it's ID. - * If it is not found, 0 is returned. - */ -static int syn_scl_name2id(char_u *name) -{ - int i; - char_u *name_u; - - /* Avoid using stricmp() too much, it's slow on some systems */ - name_u = vim_strsave_up(name); - if (name_u == NULL) - return 0; - for (i = curwin->w_s->b_syn_clusters.ga_len; --i >= 0; ) - if (SYN_CLSTR(curwin->w_s)[i].scl_name_u != NULL - && STRCMP(name_u, SYN_CLSTR(curwin->w_s)[i].scl_name_u) == 0) - break; - free(name_u); - return i < 0 ? 0 : i + SYNID_CLUSTER; -} - -/* - * Like syn_scl_name2id(), but take a pointer + length argument. - */ -static int syn_scl_namen2id(char_u *linep, int len) -{ - char_u *name; - int id = 0; - - name = vim_strnsave(linep, len); - if (name != NULL) { - id = syn_scl_name2id(name); - free(name); - } - return id; -} - -/* - * Find syntax cluster name in the table and return it's ID. - * The argument is a pointer to the name and the length of the name. - * If it doesn't exist yet, a new entry is created. - * Return 0 for failure. - */ -static int syn_check_cluster(char_u *pp, int len) -{ - int id; - char_u *name; - - name = vim_strnsave(pp, len); - if (name == NULL) - return 0; - - id = syn_scl_name2id(name); - if (id == 0) /* doesn't exist yet */ - id = syn_add_cluster(name); - else - free(name); - return id; -} - -/* - * Add new syntax cluster and return it's ID. - * "name" must be an allocated string, it will be consumed. - * Return 0 for failure. - */ -static int syn_add_cluster(char_u *name) -{ - int len; - - /* - * First call for this growarray: init growing array. - */ - if (curwin->w_s->b_syn_clusters.ga_data == NULL) { - curwin->w_s->b_syn_clusters.ga_itemsize = sizeof(syn_cluster_T); - curwin->w_s->b_syn_clusters.ga_growsize = 10; - } - - len = curwin->w_s->b_syn_clusters.ga_len; - if (len >= MAX_CLUSTER_ID) { - EMSG((char_u *)_("E848: Too many syntax clusters")); - free(name); - return 0; - } - - /* - * Make room for at least one other cluster entry. - */ - ga_grow(&curwin->w_s->b_syn_clusters, 1); - - memset(&(SYN_CLSTR(curwin->w_s)[len]), 0, sizeof(syn_cluster_T)); - SYN_CLSTR(curwin->w_s)[len].scl_name = name; - SYN_CLSTR(curwin->w_s)[len].scl_name_u = vim_strsave_up(name); - SYN_CLSTR(curwin->w_s)[len].scl_list = NULL; - ++curwin->w_s->b_syn_clusters.ga_len; - - if (STRICMP(name, "Spell") == 0) - curwin->w_s->b_spell_cluster_id = len + SYNID_CLUSTER; - if (STRICMP(name, "NoSpell") == 0) - curwin->w_s->b_nospell_cluster_id = len + SYNID_CLUSTER; - - return len + SYNID_CLUSTER; -} - -/* - * Handle ":syntax cluster {cluster-name} [contains={groupname},..] - * [add={groupname},..] [remove={groupname},..]". - */ -static void syn_cmd_cluster(exarg_T *eap, int syncing) -{ - char_u *arg = eap->arg; - char_u *group_name_end; - char_u *rest; - int scl_id; - short *clstr_list; - int got_clstr = FALSE; - int opt_len; - int list_op; - - eap->nextcmd = find_nextcmd(arg); - if (eap->skip) - return; - - rest = get_group_name(arg, &group_name_end); - - if (rest != NULL) { - scl_id = syn_check_cluster(arg, (int)(group_name_end - arg)); - if (scl_id == 0) - return; - scl_id -= SYNID_CLUSTER; - - for (;; ) { - if (STRNICMP(rest, "add", 3) == 0 - && (vim_iswhite(rest[3]) || rest[3] == '=')) { - opt_len = 3; - list_op = CLUSTER_ADD; - } else if (STRNICMP(rest, "remove", 6) == 0 - && (vim_iswhite(rest[6]) || rest[6] == '=')) { - opt_len = 6; - list_op = CLUSTER_SUBTRACT; - } else if (STRNICMP(rest, "contains", 8) == 0 - && (vim_iswhite(rest[8]) || rest[8] == '=')) { - opt_len = 8; - list_op = CLUSTER_REPLACE; - } else - break; - - clstr_list = NULL; - if (get_id_list(&rest, opt_len, &clstr_list) == FAIL) { - EMSG2(_(e_invarg2), rest); - break; - } - syn_combine_list(&SYN_CLSTR(curwin->w_s)[scl_id].scl_list, - &clstr_list, list_op); - got_clstr = TRUE; - } - - if (got_clstr) { - redraw_curbuf_later(SOME_VALID); - syn_stack_free_all(curwin->w_s); /* Need to recompute all. */ - } - } - - if (!got_clstr) - EMSG(_("E400: No cluster specified")); - if (rest == NULL || !ends_excmd(*rest)) - EMSG2(_(e_invarg2), arg); -} - -/* - * On first call for current buffer: Init growing array. - */ -static void init_syn_patterns(void) -{ - curwin->w_s->b_syn_patterns.ga_itemsize = sizeof(synpat_T); - curwin->w_s->b_syn_patterns.ga_growsize = 10; -} - -/* - * Get one pattern for a ":syntax match" or ":syntax region" command. - * Stores the pattern and program in a synpat_T. - * Returns a pointer to the next argument, or NULL in case of an error. - */ -static char_u *get_syn_pattern(char_u *arg, synpat_T *ci) -{ - char_u *end; - int *p; - int idx; - char_u *cpo_save; - - /* need at least three chars */ - if (arg == NULL || arg[1] == NUL || arg[2] == NUL) - return NULL; - - end = skip_regexp(arg + 1, *arg, TRUE, NULL); - if (*end != *arg) { /* end delimiter not found */ - EMSG2(_("E401: Pattern delimiter not found: %s"), arg); - return NULL; - } - /* store the pattern and compiled regexp program */ - if ((ci->sp_pattern = vim_strnsave(arg + 1, (int)(end - arg - 1))) == NULL) - return NULL; - - /* Make 'cpoptions' empty, to avoid the 'l' flag */ - cpo_save = p_cpo; - p_cpo = (char_u *)""; - ci->sp_prog = vim_regcomp(ci->sp_pattern, RE_MAGIC); - p_cpo = cpo_save; - - if (ci->sp_prog == NULL) - return NULL; - ci->sp_ic = curwin->w_s->b_syn_ic; - syn_clear_time(&ci->sp_time); - - /* - * Check for a match, highlight or region offset. - */ - ++end; - do { - for (idx = SPO_COUNT; --idx >= 0; ) - if (STRNCMP(end, spo_name_tab[idx], 3) == 0) - break; - if (idx >= 0) { - p = &(ci->sp_offsets[idx]); - if (idx != SPO_LC_OFF) - switch (end[3]) { - case 's': break; - case 'b': break; - case 'e': idx += SPO_COUNT; break; - default: idx = -1; break; - } - if (idx >= 0) { - ci->sp_off_flags |= (1 << idx); - if (idx == SPO_LC_OFF) { /* lc=99 */ - end += 3; - *p = getdigits(&end); - - /* "lc=" offset automatically sets "ms=" offset */ - if (!(ci->sp_off_flags & (1 << SPO_MS_OFF))) { - ci->sp_off_flags |= (1 << SPO_MS_OFF); - ci->sp_offsets[SPO_MS_OFF] = *p; - } - } else { /* yy=x+99 */ - end += 4; - if (*end == '+') { - ++end; - *p = getdigits(&end); /* positive offset */ - } else if (*end == '-') { - ++end; - *p = -getdigits(&end); /* negative offset */ - } - } - if (*end != ',') - break; - ++end; - } - } - } while (idx >= 0); - - if (!ends_excmd(*end) && !vim_iswhite(*end)) { - EMSG2(_("E402: Garbage after pattern: %s"), arg); - return NULL; - } - return skipwhite(end); -} - -/* - * Handle ":syntax sync .." command. - */ -static void syn_cmd_sync(exarg_T *eap, int syncing) -{ - char_u *arg_start = eap->arg; - char_u *arg_end; - char_u *key = NULL; - char_u *next_arg; - int illegal = FALSE; - int finished = FALSE; - long n; - char_u *cpo_save; - - if (ends_excmd(*arg_start)) { - syn_cmd_list(eap, TRUE); - return; - } - - while (!ends_excmd(*arg_start)) { - arg_end = skiptowhite(arg_start); - next_arg = skipwhite(arg_end); - free(key); - key = vim_strnsave_up(arg_start, (int)(arg_end - arg_start)); - if (STRCMP(key, "CCOMMENT") == 0) { - if (!eap->skip) - curwin->w_s->b_syn_sync_flags |= SF_CCOMMENT; - if (!ends_excmd(*next_arg)) { - arg_end = skiptowhite(next_arg); - if (!eap->skip) - curwin->w_s->b_syn_sync_id = syn_check_group(next_arg, - (int)(arg_end - next_arg)); - next_arg = skipwhite(arg_end); - } else if (!eap->skip) - curwin->w_s->b_syn_sync_id = syn_name2id((char_u *)"Comment"); - } else if ( STRNCMP(key, "LINES", 5) == 0 - || STRNCMP(key, "MINLINES", 8) == 0 - || STRNCMP(key, "MAXLINES", 8) == 0 - || STRNCMP(key, "LINEBREAKS", 10) == 0) { - if (key[4] == 'S') - arg_end = key + 6; - else if (key[0] == 'L') - arg_end = key + 11; - else - arg_end = key + 9; - if (arg_end[-1] != '=' || !VIM_ISDIGIT(*arg_end)) { - illegal = TRUE; - break; - } - n = getdigits(&arg_end); - if (!eap->skip) { - if (key[4] == 'B') - curwin->w_s->b_syn_sync_linebreaks = n; - else if (key[1] == 'A') - curwin->w_s->b_syn_sync_maxlines = n; - else - curwin->w_s->b_syn_sync_minlines = n; - } - } else if (STRCMP(key, "FROMSTART") == 0) { - if (!eap->skip) { - curwin->w_s->b_syn_sync_minlines = MAXLNUM; - curwin->w_s->b_syn_sync_maxlines = 0; - } - } else if (STRCMP(key, "LINECONT") == 0) { - if (curwin->w_s->b_syn_linecont_pat != NULL) { - EMSG(_("E403: syntax sync: line continuations pattern specified twice")); - finished = TRUE; - break; - } - arg_end = skip_regexp(next_arg + 1, *next_arg, TRUE, NULL); - if (*arg_end != *next_arg) { /* end delimiter not found */ - illegal = TRUE; - break; - } - - if (!eap->skip) { - /* store the pattern and compiled regexp program */ - if ((curwin->w_s->b_syn_linecont_pat = vim_strnsave(next_arg + 1, - (int)(arg_end - next_arg - 1))) == NULL) { - finished = TRUE; - break; - } - curwin->w_s->b_syn_linecont_ic = curwin->w_s->b_syn_ic; - - /* Make 'cpoptions' empty, to avoid the 'l' flag */ - cpo_save = p_cpo; - p_cpo = (char_u *)""; - curwin->w_s->b_syn_linecont_prog = - vim_regcomp(curwin->w_s->b_syn_linecont_pat, RE_MAGIC); - p_cpo = cpo_save; - syn_clear_time(&curwin->w_s->b_syn_linecont_time); - - if (curwin->w_s->b_syn_linecont_prog == NULL) { - free(curwin->w_s->b_syn_linecont_pat); - curwin->w_s->b_syn_linecont_pat = NULL; - finished = TRUE; - break; - } - } - next_arg = skipwhite(arg_end + 1); - } else { - eap->arg = next_arg; - if (STRCMP(key, "MATCH") == 0) - syn_cmd_match(eap, TRUE); - else if (STRCMP(key, "REGION") == 0) - syn_cmd_region(eap, TRUE); - else if (STRCMP(key, "CLEAR") == 0) - syn_cmd_clear(eap, TRUE); - else - illegal = TRUE; - finished = TRUE; - break; - } - arg_start = next_arg; - } - free(key); - if (illegal) - EMSG2(_("E404: Illegal arguments: %s"), arg_start); - else if (!finished) { - eap->nextcmd = check_nextcmd(arg_start); - redraw_curbuf_later(SOME_VALID); - syn_stack_free_all(curwin->w_s); /* Need to recompute all syntax. */ - } -} - -/* - * Convert a line of highlight group names into a list of group ID numbers. - * "arg" should point to the "contains" or "nextgroup" keyword. - * "arg" is advanced to after the last group name. - * Careful: the argument is modified (NULs added). - * returns FAIL for some error, OK for success. - */ -static int -get_id_list ( - char_u **arg, - int keylen, /* length of keyword */ - short **list /* where to store the resulting list, if not - NULL, the list is silently skipped! */ -) -{ - char_u *p = NULL; - char_u *end; - int round; - int count; - int total_count = 0; - short *retval = NULL; - char_u *name; - regmatch_T regmatch; - int id; - int i; - int failed = FALSE; - - /* - * We parse the list twice: - * round == 1: count the number of items, allocate the array. - * round == 2: fill the array with the items. - * In round 1 new groups may be added, causing the number of items to - * grow when a regexp is used. In that case round 1 is done once again. - */ - for (round = 1; round <= 2; ++round) { - /* - * skip "contains" - */ - p = skipwhite(*arg + keylen); - if (*p != '=') { - EMSG2(_("E405: Missing equal sign: %s"), *arg); - break; - } - p = skipwhite(p + 1); - if (ends_excmd(*p)) { - EMSG2(_("E406: Empty argument: %s"), *arg); - break; - } - - /* - * parse the arguments after "contains" - */ - count = 0; - while (!ends_excmd(*p)) { - for (end = p; *end && !vim_iswhite(*end) && *end != ','; ++end) - ; - name = alloc((int)(end - p + 3)); /* leave room for "^$" */ - vim_strncpy(name + 1, p, end - p); - if ( STRCMP(name + 1, "ALLBUT") == 0 - || STRCMP(name + 1, "ALL") == 0 - || STRCMP(name + 1, "TOP") == 0 - || STRCMP(name + 1, "CONTAINED") == 0) { - if (TOUPPER_ASC(**arg) != 'C') { - EMSG2(_("E407: %s not allowed here"), name + 1); - failed = TRUE; - free(name); - break; - } - if (count != 0) { - EMSG2(_("E408: %s must be first in contains list"), name + 1); - failed = TRUE; - free(name); - break; - } - if (name[1] == 'A') - id = SYNID_ALLBUT; - else if (name[1] == 'T') - id = SYNID_TOP; - else - id = SYNID_CONTAINED; - id += current_syn_inc_tag; - } else if (name[1] == '@') { - id = syn_check_cluster(name + 2, (int)(end - p - 1)); - } else { - /* - * Handle full group name. - */ - if (vim_strpbrk(name + 1, (char_u *)"\\.*^$~[") == NULL) - id = syn_check_group(name + 1, (int)(end - p)); - else { - /* - * Handle match of regexp with group names. - */ - *name = '^'; - STRCAT(name, "$"); - regmatch.regprog = vim_regcomp(name, RE_MAGIC); - if (regmatch.regprog == NULL) { - failed = TRUE; - free(name); - break; - } - - regmatch.rm_ic = TRUE; - id = 0; - for (i = highlight_ga.ga_len; --i >= 0; ) { - if (vim_regexec(®match, HL_TABLE()[i].sg_name, - (colnr_T)0)) { - if (round == 2) { - /* Got more items than expected; can happen - * when adding items that match: - * "contains=a.*b,axb". - * Go back to first round */ - if (count >= total_count) { - free(retval); - round = 1; - } else - retval[count] = i + 1; - } - ++count; - id = -1; /* remember that we found one */ - } - } - vim_regfree(regmatch.regprog); - } - } - free(name); - if (id == 0) { - EMSG2(_("E409: Unknown group name: %s"), p); - failed = TRUE; - break; - } - if (id > 0) { - if (round == 2) { - /* Got more items than expected, go back to first round */ - if (count >= total_count) { - free(retval); - round = 1; - } else - retval[count] = id; - } - ++count; - } - p = skipwhite(end); - if (*p != ',') - break; - p = skipwhite(p + 1); /* skip comma in between arguments */ - } - if (failed) - break; - if (round == 1) { - retval = (short *)alloc((unsigned)((count + 1) * sizeof(short))); - retval[count] = 0; /* zero means end of the list */ - total_count = count; - } - } - - *arg = p; - if (failed || retval == NULL) { - free(retval); - return FAIL; - } - - if (*list == NULL) - *list = retval; - else - free(retval); /* list already found, don't overwrite it */ - - return OK; -} - -/* - * Make a copy of an ID list. - */ -static short *copy_id_list(short *list) -{ - int len; - int count; - short *retval; - - if (list == NULL) - return NULL; - - for (count = 0; list[count]; ++count) - ; - len = (count + 1) * sizeof(short); - retval = (short *)alloc((unsigned)len); - memmove(retval, list, (size_t)len); - - return retval; -} - -/* - * Check if syntax group "ssp" is in the ID list "list" of "cur_si". - * "cur_si" can be NULL if not checking the "containedin" list. - * Used to check if a syntax item is in the "contains" or "nextgroup" list of - * the current item. - * This function is called very often, keep it fast!! - */ -static int -in_id_list ( - stateitem_T *cur_si, /* current item or NULL */ - short *list, /* id list */ - struct sp_syn *ssp, /* group id and ":syn include" tag of group */ - int contained /* group id is contained */ -) -{ - int retval; - short *scl_list; - short item; - short id = ssp->id; - static int depth = 0; - int r; - - /* If ssp has a "containedin" list and "cur_si" is in it, return TRUE. */ - if (cur_si != NULL && ssp->cont_in_list != NULL - && !(cur_si->si_flags & HL_MATCH)) { - /* Ignore transparent items without a contains argument. Double check - * that we don't go back past the first one. */ - while ((cur_si->si_flags & HL_TRANS_CONT) - && cur_si > (stateitem_T *)(current_state.ga_data)) - --cur_si; - /* cur_si->si_idx is -1 for keywords, these never contain anything. */ - if (cur_si->si_idx >= 0 && in_id_list(NULL, ssp->cont_in_list, - &(SYN_ITEMS(syn_block)[cur_si->si_idx].sp_syn), - SYN_ITEMS(syn_block)[cur_si->si_idx].sp_flags & HL_CONTAINED)) - return TRUE; - } - - if (list == NULL) - return FALSE; - - /* - * If list is ID_LIST_ALL, we are in a transparent item that isn't - * inside anything. Only allow not-contained groups. - */ - if (list == ID_LIST_ALL) - return !contained; - - /* - * If the first item is "ALLBUT", return TRUE if "id" is NOT in the - * contains list. We also require that "id" is at the same ":syn include" - * level as the list. - */ - item = *list; - if (item >= SYNID_ALLBUT && item < SYNID_CLUSTER) { - if (item < SYNID_TOP) { - /* ALL or ALLBUT: accept all groups in the same file */ - if (item - SYNID_ALLBUT != ssp->inc_tag) - return FALSE; - } else if (item < SYNID_CONTAINED) { - /* TOP: accept all not-contained groups in the same file */ - if (item - SYNID_TOP != ssp->inc_tag || contained) - return FALSE; - } else { - /* CONTAINED: accept all contained groups in the same file */ - if (item - SYNID_CONTAINED != ssp->inc_tag || !contained) - return FALSE; - } - item = *++list; - retval = FALSE; - } else - retval = TRUE; - - /* - * Return "retval" if id is in the contains list. - */ - while (item != 0) { - if (item == id) - return retval; - if (item >= SYNID_CLUSTER) { - scl_list = SYN_CLSTR(syn_block)[item - SYNID_CLUSTER].scl_list; - /* restrict recursiveness to 30 to avoid an endless loop for a - * cluster that includes itself (indirectly) */ - if (scl_list != NULL && depth < 30) { - ++depth; - r = in_id_list(NULL, scl_list, ssp, contained); - --depth; - if (r) - return retval; - } - } - item = *++list; - } - return !retval; -} - -struct subcommand { - char *name; /* subcommand name */ - void (*func)(exarg_T *, int); /* function to call */ -}; - -static struct subcommand subcommands[] = -{ - {"case", syn_cmd_case}, - {"clear", syn_cmd_clear}, - {"cluster", syn_cmd_cluster}, - {"conceal", syn_cmd_conceal}, - {"enable", syn_cmd_enable}, - {"include", syn_cmd_include}, - {"keyword", syn_cmd_keyword}, - {"list", syn_cmd_list}, - {"manual", syn_cmd_manual}, - {"match", syn_cmd_match}, - {"on", syn_cmd_on}, - {"off", syn_cmd_off}, - {"region", syn_cmd_region}, - {"reset", syn_cmd_reset}, - {"spell", syn_cmd_spell}, - {"sync", syn_cmd_sync}, - {"", syn_cmd_list}, - {NULL, NULL} -}; - -/* - * ":syntax". - * This searches the subcommands[] table for the subcommand name, and calls a - * syntax_subcommand() function to do the rest. - */ -void ex_syntax(exarg_T *eap) -{ - char_u *arg = eap->arg; - char_u *subcmd_end; - char_u *subcmd_name; - int i; - - syn_cmdlinep = eap->cmdlinep; - - /* isolate subcommand name */ - for (subcmd_end = arg; ASCII_ISALPHA(*subcmd_end); ++subcmd_end) - ; - subcmd_name = vim_strnsave(arg, (int)(subcmd_end - arg)); - if (subcmd_name != NULL) { - if (eap->skip) /* skip error messages for all subcommands */ - ++emsg_skip; - for (i = 0;; ++i) { - if (subcommands[i].name == NULL) { - EMSG2(_("E410: Invalid :syntax subcommand: %s"), subcmd_name); - break; - } - if (STRCMP(subcmd_name, (char_u *)subcommands[i].name) == 0) { - eap->arg = skipwhite(subcmd_end); - (subcommands[i].func)(eap, FALSE); - break; - } - } - free(subcmd_name); - if (eap->skip) - --emsg_skip; - } -} - -void ex_ownsyntax(exarg_T *eap) -{ - char_u *old_value; - char_u *new_value; - - if (curwin->w_s == &curwin->w_buffer->b_s) { - curwin->w_s = (synblock_T *)alloc(sizeof(synblock_T)); - memset(curwin->w_s, 0, sizeof(synblock_T)); - curwin->w_p_spell = FALSE; /* No spell checking */ - clear_string_option(&curwin->w_s->b_p_spc); - clear_string_option(&curwin->w_s->b_p_spf); - vim_regfree(curwin->w_s->b_cap_prog); - curwin->w_s->b_cap_prog = NULL; - clear_string_option(&curwin->w_s->b_p_spl); - } - - /* save value of b:current_syntax */ - old_value = get_var_value((char_u *)"b:current_syntax"); - if (old_value != NULL) - old_value = vim_strsave(old_value); - - /* Apply the "syntax" autocommand event, this finds and loads the syntax - * file. */ - apply_autocmds(EVENT_SYNTAX, eap->arg, curbuf->b_fname, TRUE, curbuf); - - /* move value of b:current_syntax to w:current_syntax */ - new_value = get_var_value((char_u *)"b:current_syntax"); - if (new_value != NULL) - set_internal_string_var((char_u *)"w:current_syntax", new_value); - - /* restore value of b:current_syntax */ - if (old_value == NULL) - do_unlet((char_u *)"b:current_syntax", TRUE); - else { - set_internal_string_var((char_u *)"b:current_syntax", old_value); - free(old_value); - } -} - -int syntax_present(win_T *win) -{ - return win->w_s->b_syn_patterns.ga_len != 0 - || win->w_s->b_syn_clusters.ga_len != 0 - || win->w_s->b_keywtab.ht_used > 0 - || win->w_s->b_keywtab_ic.ht_used > 0; -} - - -static enum { - EXP_SUBCMD, /* expand ":syn" sub-commands */ - EXP_CASE /* expand ":syn case" arguments */ -} expand_what; - -/* - * Reset include_link, include_default, include_none to 0. - * Called when we are done expanding. - */ -void reset_expand_highlight(void) -{ - include_link = include_default = include_none = 0; -} - -/* - * Handle command line completion for :match and :echohl command: Add "None" - * as highlight group. - */ -void set_context_in_echohl_cmd(expand_T *xp, char_u *arg) -{ - xp->xp_context = EXPAND_HIGHLIGHT; - xp->xp_pattern = arg; - include_none = 1; -} - -/* - * Handle command line completion for :syntax command. - */ -void set_context_in_syntax_cmd(expand_T *xp, char_u *arg) -{ - char_u *p; - - /* Default: expand subcommands */ - xp->xp_context = EXPAND_SYNTAX; - expand_what = EXP_SUBCMD; - xp->xp_pattern = arg; - include_link = 0; - include_default = 0; - - /* (part of) subcommand already typed */ - if (*arg != NUL) { - p = skiptowhite(arg); - if (*p != NUL) { /* past first word */ - xp->xp_pattern = skipwhite(p); - if (*skiptowhite(xp->xp_pattern) != NUL) - xp->xp_context = EXPAND_NOTHING; - else if (STRNICMP(arg, "case", p - arg) == 0) - expand_what = EXP_CASE; - else if ( STRNICMP(arg, "keyword", p - arg) == 0 - || STRNICMP(arg, "region", p - arg) == 0 - || STRNICMP(arg, "match", p - arg) == 0 - || STRNICMP(arg, "list", p - arg) == 0) - xp->xp_context = EXPAND_HIGHLIGHT; - else - xp->xp_context = EXPAND_NOTHING; - } - } -} - -static char *(case_args[]) = {"match", "ignore", NULL}; - -/* - * Function given to ExpandGeneric() to obtain the list syntax names for - * expansion. - */ -char_u *get_syntax_name(expand_T *xp, int idx) -{ - if (expand_what == EXP_SUBCMD) - return (char_u *)subcommands[idx].name; - return (char_u *)case_args[idx]; -} - - -/* - * Function called for expression evaluation: get syntax ID at file position. - */ -int -syn_get_id ( - win_T *wp, - long lnum, - colnr_T col, - int trans, /* remove transparency */ - int *spellp, /* return: can do spell checking */ - int keep_state /* keep state of char at "col" */ -) -{ - /* When the position is not after the current position and in the same - * line of the same buffer, need to restart parsing. */ - if (wp->w_buffer != syn_buf - || lnum != current_lnum - || col < current_col) - syntax_start(wp, lnum); - - (void)get_syntax_attr(col, spellp, keep_state); - - return trans ? current_trans_id : current_id; -} - -/* - * Get extra information about the syntax item. Must be called right after - * get_syntax_attr(). - * Stores the current item sequence nr in "*seqnrp". - * Returns the current flags. - */ -int get_syntax_info(int *seqnrp) -{ - *seqnrp = current_seqnr; - return current_flags; -} - -/* - * Return conceal substitution character - */ -int syn_get_sub_char(void) -{ - return current_sub_char; -} - -/* - * Return the syntax ID at position "i" in the current stack. - * The caller must have called syn_get_id() before to fill the stack. - * Returns -1 when "i" is out of range. - */ -int syn_get_stack_item(int i) -{ - if (i >= current_state.ga_len) { - /* Need to invalidate the state, because we didn't properly finish it - * for the last character, "keep_state" was TRUE. */ - invalidate_current_state(); - current_col = MAXCOL; - return -1; - } - return CUR_STATE(i).si_id; -} - -/* - * Function called to get folding level for line "lnum" in window "wp". - */ -int syn_get_foldlevel(win_T *wp, long lnum) -{ - int level = 0; - int i; - - /* Return quickly when there are no fold items at all. */ - if (wp->w_s->b_syn_folditems != 0) { - syntax_start(wp, lnum); - - for (i = 0; i < current_state.ga_len; ++i) - if (CUR_STATE(i).si_flags & HL_FOLD) - ++level; - } - if (level > wp->w_p_fdn) { - level = wp->w_p_fdn; - if (level < 0) - level = 0; - } - return level; -} - -/* - * ":syntime". - */ -void ex_syntime(exarg_T *eap) -{ - if (STRCMP(eap->arg, "on") == 0) - syn_time_on = TRUE; - else if (STRCMP(eap->arg, "off") == 0) - syn_time_on = FALSE; - else if (STRCMP(eap->arg, "clear") == 0) - syntime_clear(); - else if (STRCMP(eap->arg, "report") == 0) - syntime_report(); - else - EMSG2(_(e_invarg2), eap->arg); -} - -static void syn_clear_time(syn_time_T *st) -{ - profile_zero(&st->total); - profile_zero(&st->slowest); - st->count = 0; - st->match = 0; -} - -/* - * Clear the syntax timing for the current buffer. - */ -static void syntime_clear(void) -{ - int idx; - synpat_T *spp; - - if (!syntax_present(curwin)) { - MSG(_(msg_no_items)); - return; - } - for (idx = 0; idx < curwin->w_s->b_syn_patterns.ga_len; ++idx) { - spp = &(SYN_ITEMS(curwin->w_s)[idx]); - syn_clear_time(&spp->sp_time); - } -} - -/* - * Function given to ExpandGeneric() to obtain the possible arguments of the - * ":syntime {on,off,clear,report}" command. - */ -char_u *get_syntime_arg(expand_T *xp, int idx) -{ - switch (idx) { - case 0: return (char_u *)"on"; - case 1: return (char_u *)"off"; - case 2: return (char_u *)"clear"; - case 3: return (char_u *)"report"; - } - return NULL; -} - -typedef struct { - proftime_T total; - int count; - int match; - proftime_T slowest; - proftime_T average; - int id; - char_u *pattern; -} time_entry_T; - -static int syn_compare_syntime(const void *v1, const void *v2) -{ - const time_entry_T *s1 = v1; - const time_entry_T *s2 = v2; - - return profile_cmp(&s1->total, &s2->total); -} - -/* - * Clear the syntax timing for the current buffer. - */ -static void syntime_report(void) -{ - int idx; - synpat_T *spp; - proftime_T tm; - int len; - proftime_T total_total; - int total_count = 0; - garray_T ga; - time_entry_T *p; - - if (!syntax_present(curwin)) { - MSG(_(msg_no_items)); - return; - } - - ga_init(&ga, sizeof(time_entry_T), 50); - profile_zero(&total_total); - for (idx = 0; idx < curwin->w_s->b_syn_patterns.ga_len; ++idx) { - spp = &(SYN_ITEMS(curwin->w_s)[idx]); - if (spp->sp_time.count > 0) { - ga_grow(&ga, 1); - p = ((time_entry_T *)ga.ga_data) + ga.ga_len; - p->total = spp->sp_time.total; - profile_add(&total_total, &spp->sp_time.total); - p->count = spp->sp_time.count; - p->match = spp->sp_time.match; - total_count += spp->sp_time.count; - p->slowest = spp->sp_time.slowest; - profile_divide(&spp->sp_time.total, spp->sp_time.count, &tm); - p->average = tm; - p->id = spp->sp_syn.id; - p->pattern = spp->sp_pattern; - ++ga.ga_len; - } - } - - /* sort on total time */ - qsort(ga.ga_data, (size_t)ga.ga_len, sizeof(time_entry_T), - syn_compare_syntime); - - MSG_PUTS_TITLE(_( - " TOTAL COUNT MATCH SLOWEST AVERAGE NAME PATTERN")); - MSG_PUTS("\n"); - for (idx = 0; idx < ga.ga_len && !got_int; ++idx) { - spp = &(SYN_ITEMS(curwin->w_s)[idx]); - p = ((time_entry_T *)ga.ga_data) + idx; - - MSG_PUTS(profile_msg(&p->total)); - MSG_PUTS(" "); /* make sure there is always a separating space */ - msg_advance(13); - msg_outnum(p->count); - MSG_PUTS(" "); - msg_advance(20); - msg_outnum(p->match); - MSG_PUTS(" "); - msg_advance(26); - MSG_PUTS(profile_msg(&p->slowest)); - MSG_PUTS(" "); - msg_advance(38); - MSG_PUTS(profile_msg(&p->average)); - MSG_PUTS(" "); - msg_advance(50); - msg_outtrans(HL_TABLE()[p->id - 1].sg_name); - MSG_PUTS(" "); - - msg_advance(69); - if (Columns < 80) - len = 20; /* will wrap anyway */ - else - len = Columns - 70; - if (len > (int)STRLEN(p->pattern)) - len = (int)STRLEN(p->pattern); - msg_outtrans_len(p->pattern, len); - MSG_PUTS("\n"); - } - ga_clear(&ga); - if (!got_int) { - MSG_PUTS("\n"); - MSG_PUTS(profile_msg(&total_total)); - msg_advance(13); - msg_outnum(total_count); - MSG_PUTS("\n"); - } -} - -/************************************** -* Highlighting stuff * -**************************************/ - -/* - * The default highlight groups. These are compiled-in for fast startup and - * they still work when the runtime files can't be found. - * When making changes here, also change runtime/colors/default.vim! - * The #ifdefs are needed to reduce the amount of static data. Helps to make - * the 16 bit DOS (museum) version compile. - */ -# define CENT(a, b) b -static char *(highlight_init_both[]) = -{ - CENT( - "ErrorMsg term=standout ctermbg=DarkRed ctermfg=White", - "ErrorMsg term=standout ctermbg=DarkRed ctermfg=White guibg=Red guifg=White"), - CENT("IncSearch term=reverse cterm=reverse", - "IncSearch term=reverse cterm=reverse gui=reverse"), - CENT("ModeMsg term=bold cterm=bold", - "ModeMsg term=bold cterm=bold gui=bold"), - CENT("NonText term=bold ctermfg=Blue", - "NonText term=bold ctermfg=Blue gui=bold guifg=Blue"), - CENT("StatusLine term=reverse,bold cterm=reverse,bold", - "StatusLine term=reverse,bold cterm=reverse,bold gui=reverse,bold"), - CENT("StatusLineNC term=reverse cterm=reverse", - "StatusLineNC term=reverse cterm=reverse gui=reverse"), - CENT("VertSplit term=reverse cterm=reverse", - "VertSplit term=reverse cterm=reverse gui=reverse"), - CENT("DiffText term=reverse cterm=bold ctermbg=Red", - "DiffText term=reverse cterm=bold ctermbg=Red gui=bold guibg=Red"), - CENT("PmenuSbar ctermbg=Grey", - "PmenuSbar ctermbg=Grey guibg=Grey"), - CENT("TabLineSel term=bold cterm=bold", - "TabLineSel term=bold cterm=bold gui=bold"), - CENT("TabLineFill term=reverse cterm=reverse", - "TabLineFill term=reverse cterm=reverse gui=reverse"), - NULL -}; - -static char *(highlight_init_light[]) = -{ - CENT("Directory term=bold ctermfg=DarkBlue", - "Directory term=bold ctermfg=DarkBlue guifg=Blue"), - CENT("LineNr term=underline ctermfg=Brown", - "LineNr term=underline ctermfg=Brown guifg=Brown"), - CENT("CursorLineNr term=bold ctermfg=Brown", - "CursorLineNr term=bold ctermfg=Brown gui=bold guifg=Brown"), - CENT("MoreMsg term=bold ctermfg=DarkGreen", - "MoreMsg term=bold ctermfg=DarkGreen gui=bold guifg=SeaGreen"), - CENT("Question term=standout ctermfg=DarkGreen", - "Question term=standout ctermfg=DarkGreen gui=bold guifg=SeaGreen"), - CENT("Search term=reverse ctermbg=Yellow ctermfg=NONE", - "Search term=reverse ctermbg=Yellow ctermfg=NONE guibg=Yellow guifg=NONE"), - CENT("SpellBad term=reverse ctermbg=LightRed", - "SpellBad term=reverse ctermbg=LightRed guisp=Red gui=undercurl"), - CENT("SpellCap term=reverse ctermbg=LightBlue", - "SpellCap term=reverse ctermbg=LightBlue guisp=Blue gui=undercurl"), - CENT("SpellRare term=reverse ctermbg=LightMagenta", - "SpellRare term=reverse ctermbg=LightMagenta guisp=Magenta gui=undercurl"), - CENT("SpellLocal term=underline ctermbg=Cyan", - "SpellLocal term=underline ctermbg=Cyan guisp=DarkCyan gui=undercurl"), - CENT("PmenuThumb ctermbg=Black", - "PmenuThumb ctermbg=Black guibg=Black"), - CENT("Pmenu ctermbg=LightMagenta ctermfg=Black", - "Pmenu ctermbg=LightMagenta ctermfg=Black guibg=LightMagenta"), - CENT("PmenuSel ctermbg=LightGrey ctermfg=Black", - "PmenuSel ctermbg=LightGrey ctermfg=Black guibg=Grey"), - CENT("SpecialKey term=bold ctermfg=DarkBlue", - "SpecialKey term=bold ctermfg=DarkBlue guifg=Blue"), - CENT("Title term=bold ctermfg=DarkMagenta", - "Title term=bold ctermfg=DarkMagenta gui=bold guifg=Magenta"), - CENT("WarningMsg term=standout ctermfg=DarkRed", - "WarningMsg term=standout ctermfg=DarkRed guifg=Red"), - CENT( - "WildMenu term=standout ctermbg=Yellow ctermfg=Black", - "WildMenu term=standout ctermbg=Yellow ctermfg=Black guibg=Yellow guifg=Black"), - CENT( - "Folded term=standout ctermbg=Grey ctermfg=DarkBlue", - "Folded term=standout ctermbg=Grey ctermfg=DarkBlue guibg=LightGrey guifg=DarkBlue"), - CENT( - "FoldColumn term=standout ctermbg=Grey ctermfg=DarkBlue", - "FoldColumn term=standout ctermbg=Grey ctermfg=DarkBlue guibg=Grey guifg=DarkBlue"), - CENT("SignColumn term=standout ctermbg=Grey ctermfg=DarkBlue", - "SignColumn term=standout ctermbg=Grey ctermfg=DarkBlue guibg=Grey guifg=DarkBlue"), - CENT("Visual term=reverse", - "Visual term=reverse guibg=LightGrey"), - CENT("DiffAdd term=bold ctermbg=LightBlue", - "DiffAdd term=bold ctermbg=LightBlue guibg=LightBlue"), - CENT("DiffChange term=bold ctermbg=LightMagenta", - "DiffChange term=bold ctermbg=LightMagenta guibg=LightMagenta"), - CENT( - "DiffDelete term=bold ctermfg=Blue ctermbg=LightCyan", - "DiffDelete term=bold ctermfg=Blue ctermbg=LightCyan gui=bold guifg=Blue guibg=LightCyan"), - CENT( - "TabLine term=underline cterm=underline ctermfg=black ctermbg=LightGrey", - "TabLine term=underline cterm=underline ctermfg=black ctermbg=LightGrey gui=underline guibg=LightGrey"), - CENT("CursorColumn term=reverse ctermbg=LightGrey", - "CursorColumn term=reverse ctermbg=LightGrey guibg=Grey90"), - CENT("CursorLine term=underline cterm=underline", - "CursorLine term=underline cterm=underline guibg=Grey90"), - CENT("ColorColumn term=reverse ctermbg=LightRed", - "ColorColumn term=reverse ctermbg=LightRed guibg=LightRed"), - CENT( - "Conceal ctermbg=DarkGrey ctermfg=LightGrey", - "Conceal ctermbg=DarkGrey ctermfg=LightGrey guibg=DarkGrey guifg=LightGrey"), - CENT("MatchParen term=reverse ctermbg=Cyan", - "MatchParen term=reverse ctermbg=Cyan guibg=Cyan"), - NULL -}; - -static char *(highlight_init_dark[]) = -{ - CENT("Directory term=bold ctermfg=LightCyan", - "Directory term=bold ctermfg=LightCyan guifg=Cyan"), - CENT("LineNr term=underline ctermfg=Yellow", - "LineNr term=underline ctermfg=Yellow guifg=Yellow"), - CENT("CursorLineNr term=bold ctermfg=Yellow", - "CursorLineNr term=bold ctermfg=Yellow gui=bold guifg=Yellow"), - CENT("MoreMsg term=bold ctermfg=LightGreen", - "MoreMsg term=bold ctermfg=LightGreen gui=bold guifg=SeaGreen"), - CENT("Question term=standout ctermfg=LightGreen", - "Question term=standout ctermfg=LightGreen gui=bold guifg=Green"), - CENT( - "Search term=reverse ctermbg=Yellow ctermfg=Black", - "Search term=reverse ctermbg=Yellow ctermfg=Black guibg=Yellow guifg=Black"), - CENT("SpecialKey term=bold ctermfg=LightBlue", - "SpecialKey term=bold ctermfg=LightBlue guifg=Cyan"), - CENT("SpellBad term=reverse ctermbg=Red", - "SpellBad term=reverse ctermbg=Red guisp=Red gui=undercurl"), - CENT("SpellCap term=reverse ctermbg=Blue", - "SpellCap term=reverse ctermbg=Blue guisp=Blue gui=undercurl"), - CENT("SpellRare term=reverse ctermbg=Magenta", - "SpellRare term=reverse ctermbg=Magenta guisp=Magenta gui=undercurl"), - CENT("SpellLocal term=underline ctermbg=Cyan", - "SpellLocal term=underline ctermbg=Cyan guisp=Cyan gui=undercurl"), - CENT("PmenuThumb ctermbg=White", - "PmenuThumb ctermbg=White guibg=White"), - CENT("Pmenu ctermbg=Magenta ctermfg=Black", - "Pmenu ctermbg=Magenta ctermfg=Black guibg=Magenta"), - CENT("PmenuSel ctermbg=Black ctermfg=DarkGrey", - "PmenuSel ctermbg=Black ctermfg=DarkGrey guibg=DarkGrey"), - CENT("Title term=bold ctermfg=LightMagenta", - "Title term=bold ctermfg=LightMagenta gui=bold guifg=Magenta"), - CENT("WarningMsg term=standout ctermfg=LightRed", - "WarningMsg term=standout ctermfg=LightRed guifg=Red"), - CENT( - "WildMenu term=standout ctermbg=Yellow ctermfg=Black", - "WildMenu term=standout ctermbg=Yellow ctermfg=Black guibg=Yellow guifg=Black"), - CENT( - "Folded term=standout ctermbg=DarkGrey ctermfg=Cyan", - "Folded term=standout ctermbg=DarkGrey ctermfg=Cyan guibg=DarkGrey guifg=Cyan"), - CENT( - "FoldColumn term=standout ctermbg=DarkGrey ctermfg=Cyan", - "FoldColumn term=standout ctermbg=DarkGrey ctermfg=Cyan guibg=Grey guifg=Cyan"), - CENT("SignColumn term=standout ctermbg=DarkGrey ctermfg=Cyan", - "SignColumn term=standout ctermbg=DarkGrey ctermfg=Cyan guibg=Grey guifg=Cyan"), - CENT("Visual term=reverse", - "Visual term=reverse guibg=DarkGrey"), - CENT("DiffAdd term=bold ctermbg=DarkBlue", - "DiffAdd term=bold ctermbg=DarkBlue guibg=DarkBlue"), - CENT("DiffChange term=bold ctermbg=DarkMagenta", - "DiffChange term=bold ctermbg=DarkMagenta guibg=DarkMagenta"), - CENT( - "DiffDelete term=bold ctermfg=Blue ctermbg=DarkCyan", - "DiffDelete term=bold ctermfg=Blue ctermbg=DarkCyan gui=bold guifg=Blue guibg=DarkCyan"), - CENT( - "TabLine term=underline cterm=underline ctermfg=white ctermbg=DarkGrey", - "TabLine term=underline cterm=underline ctermfg=white ctermbg=DarkGrey gui=underline guibg=DarkGrey"), - CENT("CursorColumn term=reverse ctermbg=DarkGrey", - "CursorColumn term=reverse ctermbg=DarkGrey guibg=Grey40"), - CENT("CursorLine term=underline cterm=underline", - "CursorLine term=underline cterm=underline guibg=Grey40"), - CENT("ColorColumn term=reverse ctermbg=DarkRed", - "ColorColumn term=reverse ctermbg=DarkRed guibg=DarkRed"), - CENT("MatchParen term=reverse ctermbg=DarkCyan", - "MatchParen term=reverse ctermbg=DarkCyan guibg=DarkCyan"), - CENT( - "Conceal ctermbg=DarkGrey ctermfg=LightGrey", - "Conceal ctermbg=DarkGrey ctermfg=LightGrey guibg=DarkGrey guifg=LightGrey"), - NULL -}; - -void -init_highlight ( - int both, /* include groups where 'bg' doesn't matter */ - int reset /* clear group first */ -) -{ - int i; - char **pp; - static int had_both = FALSE; - char_u *p; - - /* - * Try finding the color scheme file. Used when a color file was loaded - * and 'background' or 't_Co' is changed. - */ - p = get_var_value((char_u *)"g:colors_name"); - if (p != NULL && load_colors(p) == OK) - return; - - /* - * Didn't use a color file, use the compiled-in colors. - */ - if (both) { - had_both = TRUE; - pp = highlight_init_both; - for (i = 0; pp[i] != NULL; ++i) - do_highlight((char_u *)pp[i], reset, TRUE); - } else if (!had_both) - /* Don't do anything before the call with both == TRUE from main(). - * Not everything has been setup then, and that call will overrule - * everything anyway. */ - return; - - if (*p_bg == 'l') - pp = highlight_init_light; - else - pp = highlight_init_dark; - for (i = 0; pp[i] != NULL; ++i) - do_highlight((char_u *)pp[i], reset, TRUE); - - /* Reverse looks ugly, but grey may not work for 8 colors. Thus let it - * depend on the number of colors available. - * With 8 colors brown is equal to yellow, need to use black for Search fg - * to avoid Statement highlighted text disappears. - * Clear the attributes, needed when changing the t_Co value. */ - if (t_colors > 8) - do_highlight( - (char_u *)(*p_bg == 'l' - ? "Visual cterm=NONE ctermbg=LightGrey" - : "Visual cterm=NONE ctermbg=DarkGrey"), FALSE, - TRUE); - else { - do_highlight((char_u *)"Visual cterm=reverse ctermbg=NONE", - FALSE, TRUE); - if (*p_bg == 'l') - do_highlight((char_u *)"Search ctermfg=black", FALSE, TRUE); - } - - /* - * If syntax highlighting is enabled load the highlighting for it. - */ - if (get_var_value((char_u *)"g:syntax_on") != NULL) { - static int recursive = 0; - - if (recursive >= 5) - EMSG(_("E679: recursive loop loading syncolor.vim")); - else { - ++recursive; - (void)source_runtime((char_u *)"syntax/syncolor.vim", TRUE); - --recursive; - } - } -} - -/* - * Load color file "name". - * Return OK for success, FAIL for failure. - */ -int load_colors(char_u *name) -{ - char_u *buf; - int retval = FAIL; - static int recursive = FALSE; - - /* When being called recursively, this is probably because setting - * 'background' caused the highlighting to be reloaded. This means it is - * working, thus we should return OK. */ - if (recursive) - return OK; - - recursive = TRUE; - buf = alloc((unsigned)(STRLEN(name) + 12)); - sprintf((char *)buf, "colors/%s.vim", name); - retval = source_runtime(buf, FALSE); - free(buf); - apply_autocmds(EVENT_COLORSCHEME, name, curbuf->b_fname, FALSE, curbuf); - - recursive = FALSE; - - return retval; -} - -/* - * Handle the ":highlight .." command. - * When using ":hi clear" this is called recursively for each group with - * "forceit" and "init" both TRUE. - */ -void -do_highlight ( - char_u *line, - int forceit, - int init /* TRUE when called for initializing */ -) -{ - char_u *name_end; - char_u *p; - char_u *linep; - char_u *key_start; - char_u *arg_start; - char_u *key = NULL, *arg = NULL; - long i; - int off; - int len; - int attr; - int id; - int idx; - int dodefault = FALSE; - int doclear = FALSE; - int dolink = FALSE; - int error = FALSE; - int color; - int is_normal_group = FALSE; /* "Normal" group */ -# define is_menu_group 0 -# define is_tooltip_group 0 - - /* - * If no argument, list current highlighting. - */ - if (ends_excmd(*line)) { - for (i = 1; i <= highlight_ga.ga_len && !got_int; ++i) - /* TODO: only call when the group has attributes set */ - highlight_list_one((int)i); - return; - } - - /* - * Isolate the name. - */ - name_end = skiptowhite(line); - linep = skipwhite(name_end); - - /* - * Check for "default" argument. - */ - if (STRNCMP(line, "default", name_end - line) == 0) { - dodefault = TRUE; - line = linep; - name_end = skiptowhite(line); - linep = skipwhite(name_end); - } - - /* - * Check for "clear" or "link" argument. - */ - if (STRNCMP(line, "clear", name_end - line) == 0) - doclear = TRUE; - if (STRNCMP(line, "link", name_end - line) == 0) - dolink = TRUE; - - /* - * ":highlight {group-name}": list highlighting for one group. - */ - if (!doclear && !dolink && ends_excmd(*linep)) { - id = syn_namen2id(line, (int)(name_end - line)); - if (id == 0) - EMSG2(_("E411: highlight group not found: %s"), line); - else - highlight_list_one(id); - return; - } - - /* - * Handle ":highlight link {from} {to}" command. - */ - if (dolink) { - char_u *from_start = linep; - char_u *from_end; - char_u *to_start; - char_u *to_end; - int from_id; - int to_id; - - from_end = skiptowhite(from_start); - to_start = skipwhite(from_end); - to_end = skiptowhite(to_start); - - if (ends_excmd(*from_start) || ends_excmd(*to_start)) { - EMSG2(_("E412: Not enough arguments: \":highlight link %s\""), - from_start); - return; - } - - if (!ends_excmd(*skipwhite(to_end))) { - EMSG2(_("E413: Too many arguments: \":highlight link %s\""), from_start); - return; - } - - from_id = syn_check_group(from_start, (int)(from_end - from_start)); - if (STRNCMP(to_start, "NONE", 4) == 0) - to_id = 0; - else - to_id = syn_check_group(to_start, (int)(to_end - to_start)); - - if (from_id > 0 && (!init || HL_TABLE()[from_id - 1].sg_set == 0)) { - /* - * Don't allow a link when there already is some highlighting - * for the group, unless '!' is used - */ - if (to_id > 0 && !forceit && !init - && hl_has_settings(from_id - 1, dodefault)) { - if (sourcing_name == NULL && !dodefault) - EMSG(_("E414: group has settings, highlight link ignored")); - } else { - if (!init) - HL_TABLE()[from_id - 1].sg_set |= SG_LINK; - HL_TABLE()[from_id - 1].sg_link = to_id; - HL_TABLE()[from_id - 1].sg_scriptID = current_SID; - redraw_all_later(SOME_VALID); - } - } - - /* Only call highlight_changed() once, after sourcing a syntax file */ - need_highlight_changed = TRUE; - - return; - } - - if (doclear) { - /* - * ":highlight clear [group]" command. - */ - line = linep; - if (ends_excmd(*line)) { - do_unlet((char_u *)"colors_name", TRUE); - restore_cterm_colors(); - - /* - * Clear all default highlight groups and load the defaults. - */ - for (idx = 0; idx < highlight_ga.ga_len; ++idx) - highlight_clear(idx); - init_highlight(TRUE, TRUE); - highlight_changed(); - redraw_later_clear(); - return; - } - name_end = skiptowhite(line); - linep = skipwhite(name_end); - } - - /* - * Find the group name in the table. If it does not exist yet, add it. - */ - id = syn_check_group(line, (int)(name_end - line)); - if (id == 0) /* failed (out of memory) */ - return; - idx = id - 1; /* index is ID minus one */ - - /* Return if "default" was used and the group already has settings. */ - if (dodefault && hl_has_settings(idx, TRUE)) - return; - - if (STRCMP(HL_TABLE()[idx].sg_name_u, "NORMAL") == 0) - is_normal_group = TRUE; - - /* Clear the highlighting for ":hi clear {group}" and ":hi clear". */ - if (doclear || (forceit && init)) { - highlight_clear(idx); - if (!doclear) - HL_TABLE()[idx].sg_set = 0; - } - - if (!doclear) - while (!ends_excmd(*linep)) { - key_start = linep; - if (*linep == '=') { - EMSG2(_("E415: unexpected equal sign: %s"), key_start); - error = TRUE; - break; - } - - /* - * Isolate the key ("term", "ctermfg", "ctermbg", "font", "guifg" or - * "guibg"). - */ - while (*linep && !vim_iswhite(*linep) && *linep != '=') - ++linep; - free(key); - key = vim_strnsave_up(key_start, (int)(linep - key_start)); - if (key == NULL) { - error = TRUE; - break; - } - linep = skipwhite(linep); - - if (STRCMP(key, "NONE") == 0) { - if (!init || HL_TABLE()[idx].sg_set == 0) { - if (!init) - HL_TABLE()[idx].sg_set |= SG_TERM+SG_CTERM+SG_GUI; - highlight_clear(idx); - } - continue; - } - - /* - * Check for the equal sign. - */ - if (*linep != '=') { - EMSG2(_("E416: missing equal sign: %s"), key_start); - error = TRUE; - break; - } - ++linep; - - /* - * Isolate the argument. - */ - linep = skipwhite(linep); - if (*linep == '\'') { /* guifg='color name' */ - arg_start = ++linep; - linep = vim_strchr(linep, '\''); - if (linep == NULL) { - EMSG2(_(e_invarg2), key_start); - error = TRUE; - break; - } - } else { - arg_start = linep; - linep = skiptowhite(linep); - } - if (linep == arg_start) { - EMSG2(_("E417: missing argument: %s"), key_start); - error = TRUE; - break; - } - free(arg); - arg = vim_strnsave(arg_start, (int)(linep - arg_start)); - if (arg == NULL) { - error = TRUE; - break; - } - if (*linep == '\'') - ++linep; - - /* - * Store the argument. - */ - if ( STRCMP(key, "TERM") == 0 - || STRCMP(key, "CTERM") == 0 - || STRCMP(key, "GUI") == 0) { - attr = 0; - off = 0; - while (arg[off] != NUL) { - for (i = sizeof(hl_attr_table) / sizeof(int); --i >= 0; ) { - len = (int)STRLEN(hl_name_table[i]); - if (STRNICMP(arg + off, hl_name_table[i], len) == 0) { - attr |= hl_attr_table[i]; - off += len; - break; - } - } - if (i < 0) { - EMSG2(_("E418: Illegal value: %s"), arg); - error = TRUE; - break; - } - if (arg[off] == ',') /* another one follows */ - ++off; - } - if (error) - break; - if (*key == 'T') { - if (!init || !(HL_TABLE()[idx].sg_set & SG_TERM)) { - if (!init) - HL_TABLE()[idx].sg_set |= SG_TERM; - HL_TABLE()[idx].sg_term = attr; - } - } else if (*key == 'C') { - if (!init || !(HL_TABLE()[idx].sg_set & SG_CTERM)) { - if (!init) - HL_TABLE()[idx].sg_set |= SG_CTERM; - HL_TABLE()[idx].sg_cterm = attr; - HL_TABLE()[idx].sg_cterm_bold = FALSE; - } - } else { - if (!init || !(HL_TABLE()[idx].sg_set & SG_GUI)) { - if (!init) - HL_TABLE()[idx].sg_set |= SG_GUI; - HL_TABLE()[idx].sg_gui = attr; - } - } - } else if (STRCMP(key, "FONT") == 0) { - /* in non-GUI fonts are simply ignored */ - } else if (STRCMP(key, - "CTERMFG") == 0 || STRCMP(key, "CTERMBG") == 0) { - if (!init || !(HL_TABLE()[idx].sg_set & SG_CTERM)) { - if (!init) - HL_TABLE()[idx].sg_set |= SG_CTERM; - - /* When setting the foreground color, and previously the "bold" - * flag was set for a light color, reset it now */ - if (key[5] == 'F' && HL_TABLE()[idx].sg_cterm_bold) { - HL_TABLE()[idx].sg_cterm &= ~HL_BOLD; - HL_TABLE()[idx].sg_cterm_bold = FALSE; - } - - if (VIM_ISDIGIT(*arg)) - color = atoi((char *)arg); - else if (STRICMP(arg, "fg") == 0) { - if (cterm_normal_fg_color) - color = cterm_normal_fg_color - 1; - else { - EMSG(_("E419: FG color unknown")); - error = TRUE; - break; - } - } else if (STRICMP(arg, "bg") == 0) { - if (cterm_normal_bg_color > 0) - color = cterm_normal_bg_color - 1; - else { - EMSG(_("E420: BG color unknown")); - error = TRUE; - break; - } - } else { - static char *(color_names[28]) = { - "Black", "DarkBlue", "DarkGreen", "DarkCyan", - "DarkRed", "DarkMagenta", "Brown", "DarkYellow", - "Gray", "Grey", - "LightGray", "LightGrey", "DarkGray", "DarkGrey", - "Blue", "LightBlue", "Green", "LightGreen", - "Cyan", "LightCyan", "Red", "LightRed", "Magenta", - "LightMagenta", "Yellow", "LightYellow", "White", "NONE" - }; - static int color_numbers_16[28] = {0, 1, 2, 3, - 4, 5, 6, 6, - 7, 7, - 7, 7, 8, 8, - 9, 9, 10, 10, - 11, 11, 12, 12, 13, - 13, 14, 14, 15, -1}; - /* for xterm with 88 colors... */ - static int color_numbers_88[28] = {0, 4, 2, 6, - 1, 5, 32, 72, - 84, 84, - 7, 7, 82, 82, - 12, 43, 10, 61, - 14, 63, 9, 74, 13, - 75, 11, 78, 15, -1}; - /* for xterm with 256 colors... */ - static int color_numbers_256[28] = {0, 4, 2, 6, - 1, 5, 130, 130, - 248, 248, - 7, 7, 242, 242, - 12, 81, 10, 121, - 14, 159, 9, 224, 13, - 225, 11, 229, 15, -1}; - /* for terminals with less than 16 colors... */ - static int color_numbers_8[28] = {0, 4, 2, 6, - 1, 5, 3, 3, - 7, 7, - 7, 7, 0+8, 0+8, - 4+8, 4+8, 2+8, 2+8, - 6+8, 6+8, 1+8, 1+8, 5+8, - 5+8, 3+8, 3+8, 7+8, -1}; -#if defined(__QNXNTO__) - static int *color_numbers_8_qansi = color_numbers_8; - /* On qnx, the 8 & 16 color arrays are the same */ - if (STRNCMP(T_NAME, "qansi", 5) == 0) - color_numbers_8_qansi = color_numbers_16; -#endif - - /* reduce calls to STRICMP a bit, it can be slow */ - off = TOUPPER_ASC(*arg); - for (i = (sizeof(color_names) / sizeof(char *)); --i >= 0; ) - if (off == color_names[i][0] - && STRICMP(arg + 1, color_names[i] + 1) == 0) - break; - if (i < 0) { - EMSG2(_( - "E421: Color name or number not recognized: %s"), - key_start); - error = TRUE; - break; - } - - /* Use the _16 table to check if its a valid color name. */ - color = color_numbers_16[i]; - if (color >= 0) { - if (t_colors == 8) { - /* t_Co is 8: use the 8 colors table */ -#if defined(__QNXNTO__) - color = color_numbers_8_qansi[i]; -#else - color = color_numbers_8[i]; -#endif - if (key[5] == 'F') { - /* set/reset bold attribute to get light foreground - * colors (on some terminals, e.g. "linux") */ - if (color & 8) { - HL_TABLE()[idx].sg_cterm |= HL_BOLD; - HL_TABLE()[idx].sg_cterm_bold = TRUE; - } else - HL_TABLE()[idx].sg_cterm &= ~HL_BOLD; - } - color &= 7; /* truncate to 8 colors */ - } else if (t_colors == 16 || t_colors == 88 - || t_colors == 256) { - /* - * Guess: if the termcap entry ends in 'm', it is - * probably an xterm-like terminal. Use the changed - * order for colors. - */ - if (*T_CAF != NUL) - p = T_CAF; - else - p = T_CSF; - if (*p != NUL && *(p + STRLEN(p) - 1) == 'm') - switch (t_colors) { - case 16: - color = color_numbers_8[i]; - break; - case 88: - color = color_numbers_88[i]; - break; - case 256: - color = color_numbers_256[i]; - break; - } - } - } - } - /* Add one to the argument, to avoid zero. Zero is used for - * "NONE", then "color" is -1. */ - if (key[5] == 'F') { - HL_TABLE()[idx].sg_cterm_fg = color + 1; - if (is_normal_group) { - cterm_normal_fg_color = color + 1; - cterm_normal_fg_bold = (HL_TABLE()[idx].sg_cterm & HL_BOLD); - { - must_redraw = CLEAR; - if (termcap_active && color >= 0) - term_fg_color(color); - } - } - } else { - HL_TABLE()[idx].sg_cterm_bg = color + 1; - if (is_normal_group) { - cterm_normal_bg_color = color + 1; - { - must_redraw = CLEAR; - if (color >= 0) { - if (termcap_active) - term_bg_color(color); - if (t_colors < 16) - i = (color == 0 || color == 4); - else - i = (color < 7 || color == 8); - /* Set the 'background' option if the value is - * wrong. */ - if (i != (*p_bg == 'd')) - set_option_value((char_u *)"bg", 0L, - i ? (char_u *)"dark" - : (char_u *)"light", 0); - } - } - } - } - } - } else if (STRCMP(key, "GUIFG") == 0) { - if (!init || !(HL_TABLE()[idx].sg_set & SG_GUI)) { - if (!init) - HL_TABLE()[idx].sg_set |= SG_GUI; - - free(HL_TABLE()[idx].sg_gui_fg_name); - if (STRCMP(arg, "NONE")) - HL_TABLE()[idx].sg_gui_fg_name = vim_strsave(arg); - else - HL_TABLE()[idx].sg_gui_fg_name = NULL; - } - } else if (STRCMP(key, "GUIBG") == 0) { - if (!init || !(HL_TABLE()[idx].sg_set & SG_GUI)) { - if (!init) - HL_TABLE()[idx].sg_set |= SG_GUI; - - free(HL_TABLE()[idx].sg_gui_bg_name); - if (STRCMP(arg, "NONE") != 0) - HL_TABLE()[idx].sg_gui_bg_name = vim_strsave(arg); - else - HL_TABLE()[idx].sg_gui_bg_name = NULL; - } - } else if (STRCMP(key, "GUISP") == 0) { - if (!init || !(HL_TABLE()[idx].sg_set & SG_GUI)) { - if (!init) - HL_TABLE()[idx].sg_set |= SG_GUI; - - free(HL_TABLE()[idx].sg_gui_sp_name); - if (STRCMP(arg, "NONE") != 0) - HL_TABLE()[idx].sg_gui_sp_name = vim_strsave(arg); - else - HL_TABLE()[idx].sg_gui_sp_name = NULL; - } - } else if (STRCMP(key, "START") == 0 || STRCMP(key, "STOP") == 0) { - char_u buf[100]; - char_u *tname; - - if (!init) - HL_TABLE()[idx].sg_set |= SG_TERM; - - /* - * The "start" and "stop" arguments can be a literal escape - * sequence, or a comma separated list of terminal codes. - */ - if (STRNCMP(arg, "t_", 2) == 0) { - off = 0; - buf[0] = 0; - while (arg[off] != NUL) { - /* Isolate one termcap name */ - for (len = 0; arg[off + len] && - arg[off + len] != ','; ++len) - ; - tname = vim_strnsave(arg + off, len); - if (tname == NULL) { /* out of memory */ - error = TRUE; - break; - } - /* lookup the escape sequence for the item */ - p = get_term_code(tname); - free(tname); - if (p == NULL) /* ignore non-existing things */ - p = (char_u *)""; - - /* Append it to the already found stuff */ - if ((int)(STRLEN(buf) + STRLEN(p)) >= 99) { - EMSG2(_("E422: terminal code too long: %s"), arg); - error = TRUE; - break; - } - STRCAT(buf, p); - - /* Advance to the next item */ - off += len; - if (arg[off] == ',') /* another one follows */ - ++off; - } - } else { - /* - * Copy characters from arg[] to buf[], translating <> codes. - */ - for (p = arg, off = 0; off < 100 - 6 && *p; ) { - len = trans_special(&p, buf + off, FALSE); - if (len > 0) /* recognized special char */ - off += len; - else /* copy as normal char */ - buf[off++] = *p++; - } - buf[off] = NUL; - } - if (error) - break; - - if (STRCMP(buf, "NONE") == 0) /* resetting the value */ - p = NULL; - else - p = vim_strsave(buf); - if (key[2] == 'A') { - free(HL_TABLE()[idx].sg_start); - HL_TABLE()[idx].sg_start = p; - } else { - free(HL_TABLE()[idx].sg_stop); - HL_TABLE()[idx].sg_stop = p; - } - } else { - EMSG2(_("E423: Illegal argument: %s"), key_start); - error = TRUE; - break; - } - - /* - * When highlighting has been given for a group, don't link it. - */ - if (!init || !(HL_TABLE()[idx].sg_set & SG_LINK)) - HL_TABLE()[idx].sg_link = 0; - - /* - * Continue with next argument. - */ - linep = skipwhite(linep); - } - - /* - * If there is an error, and it's a new entry, remove it from the table. - */ - if (error && idx == highlight_ga.ga_len) - syn_unadd_group(); - else { - if (is_normal_group) { - HL_TABLE()[idx].sg_term_attr = 0; - HL_TABLE()[idx].sg_cterm_attr = 0; - } else - set_hl_attr(idx); - HL_TABLE()[idx].sg_scriptID = current_SID; - redraw_all_later(NOT_VALID); - } - free(key); - free(arg); - - /* Only call highlight_changed() once, after sourcing a syntax file */ - need_highlight_changed = TRUE; -} - -#if defined(EXITFREE) || defined(PROTO) -void free_highlight(void) -{ - int i; - - for (i = 0; i < highlight_ga.ga_len; ++i) { - highlight_clear(i); - free(HL_TABLE()[i].sg_name); - free(HL_TABLE()[i].sg_name_u); - } - ga_clear(&highlight_ga); -} - -#endif - -/* - * Reset the cterm colors to what they were before Vim was started, if - * possible. Otherwise reset them to zero. - */ -void restore_cterm_colors(void) -{ - cterm_normal_fg_color = 0; - cterm_normal_fg_bold = 0; - cterm_normal_bg_color = 0; -} - -/* - * Return TRUE if highlight group "idx" has any settings. - * When "check_link" is TRUE also check for an existing link. - */ -static int hl_has_settings(int idx, int check_link) -{ - return HL_TABLE()[idx].sg_term_attr != 0 - || HL_TABLE()[idx].sg_cterm_attr != 0 - || (check_link && (HL_TABLE()[idx].sg_set & SG_LINK)); -} - -/* - * Clear highlighting for one group. - */ -static void highlight_clear(int idx) -{ - HL_TABLE()[idx].sg_term = 0; - free(HL_TABLE()[idx].sg_start); - HL_TABLE()[idx].sg_start = NULL; - free(HL_TABLE()[idx].sg_stop); - HL_TABLE()[idx].sg_stop = NULL; - HL_TABLE()[idx].sg_term_attr = 0; - HL_TABLE()[idx].sg_cterm = 0; - HL_TABLE()[idx].sg_cterm_bold = FALSE; - HL_TABLE()[idx].sg_cterm_fg = 0; - HL_TABLE()[idx].sg_cterm_bg = 0; - HL_TABLE()[idx].sg_cterm_attr = 0; - HL_TABLE()[idx].sg_gui = 0; - free(HL_TABLE()[idx].sg_gui_fg_name); - HL_TABLE()[idx].sg_gui_fg_name = NULL; - free(HL_TABLE()[idx].sg_gui_bg_name); - HL_TABLE()[idx].sg_gui_bg_name = NULL; - free(HL_TABLE()[idx].sg_gui_sp_name); - HL_TABLE()[idx].sg_gui_sp_name = NULL; - /* Clear the script ID only when there is no link, since that is not - * cleared. */ - if (HL_TABLE()[idx].sg_link == 0) - HL_TABLE()[idx].sg_scriptID = 0; -} - - -/* - * Table with the specifications for an attribute number. - * Note that this table is used by ALL buffers. This is required because the - * GUI can redraw at any time for any buffer. - */ -static garray_T term_attr_table = {0, 0, 0, 0, NULL}; - -#define TERM_ATTR_ENTRY(idx) ((attrentry_T *)term_attr_table.ga_data)[idx] - -static garray_T cterm_attr_table = {0, 0, 0, 0, NULL}; - -#define CTERM_ATTR_ENTRY(idx) ((attrentry_T *)cterm_attr_table.ga_data)[idx] - - -/* - * Return the attr number for a set of colors and font. - * Add a new entry to the term_attr_table, cterm_attr_table or gui_attr_table - * if the combination is new. - * Return 0 for error. - */ -static int get_attr_entry(garray_T *table, attrentry_T *aep) -{ - int i; - attrentry_T *taep; - static int recursive = FALSE; - - /* - * Init the table, in case it wasn't done yet. - */ - table->ga_itemsize = sizeof(attrentry_T); - table->ga_growsize = 7; - - /* - * Try to find an entry with the same specifications. - */ - for (i = 0; i < table->ga_len; ++i) { - taep = &(((attrentry_T *)table->ga_data)[i]); - if ( aep->ae_attr == taep->ae_attr - && ( - (table == &term_attr_table - && (aep->ae_u.term.start == NULL) - == (taep->ae_u.term.start == NULL) - && (aep->ae_u.term.start == NULL - || STRCMP(aep->ae_u.term.start, - taep->ae_u.term.start) == 0) - && (aep->ae_u.term.stop == NULL) - == (taep->ae_u.term.stop == NULL) - && (aep->ae_u.term.stop == NULL - || STRCMP(aep->ae_u.term.stop, - taep->ae_u.term.stop) == 0)) - || (table == &cterm_attr_table - && aep->ae_u.cterm.fg_color - == taep->ae_u.cterm.fg_color - && aep->ae_u.cterm.bg_color - == taep->ae_u.cterm.bg_color) - )) - - return i + ATTR_OFF; - } - - if (table->ga_len + ATTR_OFF > MAX_TYPENR) { - /* - * Running out of attribute entries! remove all attributes, and - * compute new ones for all groups. - * When called recursively, we are really out of numbers. - */ - if (recursive) { - EMSG(_("E424: Too many different highlighting attributes in use")); - return 0; - } - recursive = TRUE; - - clear_hl_tables(); - - must_redraw = CLEAR; - - for (i = 0; i < highlight_ga.ga_len; ++i) - set_hl_attr(i); - - recursive = FALSE; - } - - /* - * This is a new combination of colors and font, add an entry. - */ - ga_grow(table, 1); - - taep = &(((attrentry_T *)table->ga_data)[table->ga_len]); - memset(taep, 0, sizeof(attrentry_T)); - taep->ae_attr = aep->ae_attr; - if (table == &term_attr_table) { - if (aep->ae_u.term.start == NULL) - taep->ae_u.term.start = NULL; - else - taep->ae_u.term.start = vim_strsave(aep->ae_u.term.start); - if (aep->ae_u.term.stop == NULL) - taep->ae_u.term.stop = NULL; - else - taep->ae_u.term.stop = vim_strsave(aep->ae_u.term.stop); - } else if (table == &cterm_attr_table) { - taep->ae_u.cterm.fg_color = aep->ae_u.cterm.fg_color; - taep->ae_u.cterm.bg_color = aep->ae_u.cterm.bg_color; - } - ++table->ga_len; - return table->ga_len - 1 + ATTR_OFF; -} - -/* - * Clear all highlight tables. - */ -void clear_hl_tables(void) -{ - int i; - attrentry_T *taep; - - for (i = 0; i < term_attr_table.ga_len; ++i) { - taep = &(((attrentry_T *)term_attr_table.ga_data)[i]); - free(taep->ae_u.term.start); - free(taep->ae_u.term.stop); - } - ga_clear(&term_attr_table); - ga_clear(&cterm_attr_table); -} - -/* - * Combine special attributes (e.g., for spelling) with other attributes - * (e.g., for syntax highlighting). - * "prim_attr" overrules "char_attr". - * This creates a new group when required. - * Since we expect there to be few spelling mistakes we don't cache the - * result. - * Return the resulting attributes. - */ -int hl_combine_attr(int char_attr, int prim_attr) -{ - attrentry_T *char_aep = NULL; - attrentry_T *spell_aep; - attrentry_T new_en; - - if (char_attr == 0) - return prim_attr; - if (char_attr <= HL_ALL && prim_attr <= HL_ALL) - return char_attr | prim_attr; - - if (t_colors > 1) { - if (char_attr > HL_ALL) - char_aep = syn_cterm_attr2entry(char_attr); - if (char_aep != NULL) - new_en = *char_aep; - else { - memset(&new_en, 0, sizeof(new_en)); - if (char_attr <= HL_ALL) - new_en.ae_attr = char_attr; - } - - if (prim_attr <= HL_ALL) - new_en.ae_attr |= prim_attr; - else { - spell_aep = syn_cterm_attr2entry(prim_attr); - if (spell_aep != NULL) { - new_en.ae_attr |= spell_aep->ae_attr; - if (spell_aep->ae_u.cterm.fg_color > 0) - new_en.ae_u.cterm.fg_color = spell_aep->ae_u.cterm.fg_color; - if (spell_aep->ae_u.cterm.bg_color > 0) - new_en.ae_u.cterm.bg_color = spell_aep->ae_u.cterm.bg_color; - } - } - return get_attr_entry(&cterm_attr_table, &new_en); - } - - if (char_attr > HL_ALL) - char_aep = syn_term_attr2entry(char_attr); - if (char_aep != NULL) - new_en = *char_aep; - else { - memset(&new_en, 0, sizeof(new_en)); - if (char_attr <= HL_ALL) - new_en.ae_attr = char_attr; - } - - if (prim_attr <= HL_ALL) - new_en.ae_attr |= prim_attr; - else { - spell_aep = syn_term_attr2entry(prim_attr); - if (spell_aep != NULL) { - new_en.ae_attr |= spell_aep->ae_attr; - if (spell_aep->ae_u.term.start != NULL) { - new_en.ae_u.term.start = spell_aep->ae_u.term.start; - new_en.ae_u.term.stop = spell_aep->ae_u.term.stop; - } - } - } - return get_attr_entry(&term_attr_table, &new_en); -} - - -/* - * Get the highlight attributes (HL_BOLD etc.) from an attribute nr. - * Only to be used when "attr" > HL_ALL. - */ -int syn_attr2attr(int attr) -{ - attrentry_T *aep; - - if (t_colors > 1) - aep = syn_cterm_attr2entry(attr); - else - aep = syn_term_attr2entry(attr); - - if (aep == NULL) /* highlighting not set */ - return 0; - return aep->ae_attr; -} - - -attrentry_T *syn_term_attr2entry(int attr) -{ - attr -= ATTR_OFF; - if (attr >= term_attr_table.ga_len) /* did ":syntax clear" */ - return NULL; - return &(TERM_ATTR_ENTRY(attr)); -} - -attrentry_T *syn_cterm_attr2entry(int attr) -{ - attr -= ATTR_OFF; - if (attr >= cterm_attr_table.ga_len) /* did ":syntax clear" */ - return NULL; - return &(CTERM_ATTR_ENTRY(attr)); -} - -#define LIST_ATTR 1 -#define LIST_STRING 2 -#define LIST_INT 3 - -static void highlight_list_one(int id) -{ - struct hl_group *sgp; - int didh = FALSE; - - sgp = &HL_TABLE()[id - 1]; /* index is ID minus one */ - - didh = highlight_list_arg(id, didh, LIST_ATTR, - sgp->sg_term, NULL, "term"); - didh = highlight_list_arg(id, didh, LIST_STRING, - 0, sgp->sg_start, "start"); - didh = highlight_list_arg(id, didh, LIST_STRING, - 0, sgp->sg_stop, "stop"); - - didh = highlight_list_arg(id, didh, LIST_ATTR, - sgp->sg_cterm, NULL, "cterm"); - didh = highlight_list_arg(id, didh, LIST_INT, - sgp->sg_cterm_fg, NULL, "ctermfg"); - didh = highlight_list_arg(id, didh, LIST_INT, - sgp->sg_cterm_bg, NULL, "ctermbg"); - - didh = highlight_list_arg(id, didh, LIST_ATTR, - sgp->sg_gui, NULL, "gui"); - didh = highlight_list_arg(id, didh, LIST_STRING, - 0, sgp->sg_gui_fg_name, "guifg"); - didh = highlight_list_arg(id, didh, LIST_STRING, - 0, sgp->sg_gui_bg_name, "guibg"); - didh = highlight_list_arg(id, didh, LIST_STRING, - 0, sgp->sg_gui_sp_name, "guisp"); - - if (sgp->sg_link && !got_int) { - (void)syn_list_header(didh, 9999, id); - didh = TRUE; - msg_puts_attr((char_u *)"links to", hl_attr(HLF_D)); - msg_putchar(' '); - msg_outtrans(HL_TABLE()[HL_TABLE()[id - 1].sg_link - 1].sg_name); - } - - if (!didh) - highlight_list_arg(id, didh, LIST_STRING, 0, (char_u *)"cleared", ""); - if (p_verbose > 0) - last_set_msg(sgp->sg_scriptID); -} - -static int highlight_list_arg(int id, int didh, int type, int iarg, char_u *sarg, char *name) -{ - char_u buf[100]; - char_u *ts; - int i; - - if (got_int) - return FALSE; - if (type == LIST_STRING ? (sarg != NULL) : (iarg != 0)) { - ts = buf; - if (type == LIST_INT) - sprintf((char *)buf, "%d", iarg - 1); - else if (type == LIST_STRING) - ts = sarg; - else { /* type == LIST_ATTR */ - buf[0] = NUL; - for (i = 0; hl_attr_table[i] != 0; ++i) { - if (iarg & hl_attr_table[i]) { - if (buf[0] != NUL) - vim_strcat(buf, (char_u *)",", 100); - vim_strcat(buf, (char_u *)hl_name_table[i], 100); - iarg &= ~hl_attr_table[i]; /* don't want "inverse" */ - } - } - } - - (void)syn_list_header(didh, - (int)(vim_strsize(ts) + STRLEN(name) + 1), id); - didh = TRUE; - if (!got_int) { - if (*name != NUL) { - MSG_PUTS_ATTR(name, hl_attr(HLF_D)); - MSG_PUTS_ATTR("=", hl_attr(HLF_D)); - } - msg_outtrans(ts); - } - } - return didh; -} - -/* - * Return "1" if highlight group "id" has attribute "flag". - * Return NULL otherwise. - */ -char_u * -highlight_has_attr ( - int id, - int flag, - int modec /* 'g' for GUI, 'c' for cterm, 't' for term */ -) -{ - int attr; - - if (id <= 0 || id > highlight_ga.ga_len) - return NULL; - - if (modec == 'g') - attr = HL_TABLE()[id - 1].sg_gui; - else if (modec == 'c') - attr = HL_TABLE()[id - 1].sg_cterm; - else - attr = HL_TABLE()[id - 1].sg_term; - - if (attr & flag) - return (char_u *)"1"; - return NULL; -} - -/* - * Return color name of highlight group "id". - */ -char_u * -highlight_color ( - int id, - char_u *what, /* "font", "fg", "bg", "sp", "fg#", "bg#" or "sp#" */ - int modec /* 'g' for GUI, 'c' for cterm, 't' for term */ -) -{ - static char_u name[20]; - int n; - int fg = FALSE; - int sp = FALSE; - int font = FALSE; - - if (id <= 0 || id > highlight_ga.ga_len) - return NULL; - - if (TOLOWER_ASC(what[0]) == 'f' && TOLOWER_ASC(what[1]) == 'g') - fg = TRUE; - else if (TOLOWER_ASC(what[0]) == 'f' && TOLOWER_ASC(what[1]) == 'o' - && TOLOWER_ASC(what[2]) == 'n' && TOLOWER_ASC(what[3]) == 't') - font = TRUE; - else if (TOLOWER_ASC(what[0]) == 's' && TOLOWER_ASC(what[1]) == 'p') - sp = TRUE; - else if (!(TOLOWER_ASC(what[0]) == 'b' && TOLOWER_ASC(what[1]) == 'g')) - return NULL; - if (modec == 'g') { - if (fg) - return HL_TABLE()[id - 1].sg_gui_fg_name; - if (sp) - return HL_TABLE()[id - 1].sg_gui_sp_name; - return HL_TABLE()[id - 1].sg_gui_bg_name; - } - if (font || sp) - return NULL; - if (modec == 'c') { - if (fg) - n = HL_TABLE()[id - 1].sg_cterm_fg - 1; - else - n = HL_TABLE()[id - 1].sg_cterm_bg - 1; - sprintf((char *)name, "%d", n); - return name; - } - /* term doesn't have color */ - return NULL; -} - -/* - * Output the syntax list header. - * Return TRUE when started a new line. - */ -static int -syn_list_header ( - int did_header, /* did header already */ - int outlen, /* length of string that comes */ - int id /* highlight group id */ -) -{ - int endcol = 19; - int newline = TRUE; - - if (!did_header) { - msg_putchar('\n'); - if (got_int) - return TRUE; - msg_outtrans(HL_TABLE()[id - 1].sg_name); - endcol = 15; - } else if (msg_col + outlen + 1 >= Columns) { - msg_putchar('\n'); - if (got_int) - return TRUE; - } else { - if (msg_col >= endcol) /* wrap around is like starting a new line */ - newline = FALSE; - } - - if (msg_col >= endcol) /* output at least one space */ - endcol = msg_col + 1; - if (Columns <= endcol) /* avoid hang for tiny window */ - endcol = Columns - 1; - - msg_advance(endcol); - - /* Show "xxx" with the attributes. */ - if (!did_header) { - msg_puts_attr((char_u *)"xxx", syn_id2attr(id)); - msg_putchar(' '); - } - - return newline; -} - -/* - * Set the attribute numbers for a highlight group. - * Called after one of the attributes has changed. - */ -static void -set_hl_attr ( - int idx /* index in array */ -) -{ - attrentry_T at_en; - struct hl_group *sgp = HL_TABLE() + idx; - - /* The "Normal" group doesn't need an attribute number */ - if (sgp->sg_name_u != NULL && STRCMP(sgp->sg_name_u, "NORMAL") == 0) - return; - - /* - * For the term mode: If there are other than "normal" highlighting - * attributes, need to allocate an attr number. - */ - if (sgp->sg_start == NULL && sgp->sg_stop == NULL) - sgp->sg_term_attr = sgp->sg_term; - else { - at_en.ae_attr = sgp->sg_term; - at_en.ae_u.term.start = sgp->sg_start; - at_en.ae_u.term.stop = sgp->sg_stop; - sgp->sg_term_attr = get_attr_entry(&term_attr_table, &at_en); - } - - /* - * For the color term mode: If there are other than "normal" - * highlighting attributes, need to allocate an attr number. - */ - if (sgp->sg_cterm_fg == 0 && sgp->sg_cterm_bg == 0) - sgp->sg_cterm_attr = sgp->sg_cterm; - else { - at_en.ae_attr = sgp->sg_cterm; - at_en.ae_u.cterm.fg_color = sgp->sg_cterm_fg; - at_en.ae_u.cterm.bg_color = sgp->sg_cterm_bg; - sgp->sg_cterm_attr = get_attr_entry(&cterm_attr_table, &at_en); - } -} - -/* - * Lookup a highlight group name and return it's ID. - * If it is not found, 0 is returned. - */ -int syn_name2id(char_u *name) -{ - int i; - char_u name_u[200]; - - /* Avoid using stricmp() too much, it's slow on some systems */ - /* Avoid alloc()/free(), these are slow too. ID names over 200 chars - * don't deserve to be found! */ - vim_strncpy(name_u, name, 199); - vim_strup(name_u); - for (i = highlight_ga.ga_len; --i >= 0; ) - if (HL_TABLE()[i].sg_name_u != NULL - && STRCMP(name_u, HL_TABLE()[i].sg_name_u) == 0) - break; - return i + 1; -} - -/* - * Return TRUE if highlight group "name" exists. - */ -int highlight_exists(char_u *name) -{ - return syn_name2id(name) > 0; -} - -/* - * Return the name of highlight group "id". - * When not a valid ID return an empty string. - */ -char_u *syn_id2name(int id) -{ - if (id <= 0 || id > highlight_ga.ga_len) - return (char_u *)""; - return HL_TABLE()[id - 1].sg_name; -} - -/* - * Like syn_name2id(), but take a pointer + length argument. - */ -int syn_namen2id(char_u *linep, int len) -{ - char_u *name; - int id = 0; - - name = vim_strnsave(linep, len); - if (name != NULL) { - id = syn_name2id(name); - free(name); - } - return id; -} - -/* - * Find highlight group name in the table and return it's ID. - * The argument is a pointer to the name and the length of the name. - * If it doesn't exist yet, a new entry is created. - * Return 0 for failure. - */ -int syn_check_group(char_u *pp, int len) -{ - int id; - char_u *name; - - name = vim_strnsave(pp, len); - if (name == NULL) - return 0; - - id = syn_name2id(name); - if (id == 0) /* doesn't exist yet */ - id = syn_add_group(name); - else - free(name); - return id; -} - -/* - * Add new highlight group and return it's ID. - * "name" must be an allocated string, it will be consumed. - * Return 0 for failure. - */ -static int syn_add_group(char_u *name) -{ - char_u *p; - - /* Check that the name is ASCII letters, digits and underscore. */ - for (p = name; *p != NUL; ++p) { - if (!vim_isprintc(*p)) { - EMSG(_("E669: Unprintable character in group name")); - free(name); - return 0; - } else if (!ASCII_ISALNUM(*p) && *p != '_') { - /* This is an error, but since there previously was no check only - * give a warning. */ - msg_source(hl_attr(HLF_W)); - MSG(_("W18: Invalid character in group name")); - break; - } - } - - /* - * First call for this growarray: init growing array. - */ - if (highlight_ga.ga_data == NULL) { - highlight_ga.ga_itemsize = sizeof(struct hl_group); - highlight_ga.ga_growsize = 10; - } - - if (highlight_ga.ga_len >= MAX_HL_ID) { - EMSG(_("E849: Too many highlight and syntax groups")); - free(name); - return 0; - } - - /* - * Make room for at least one other syntax_highlight entry. - */ - ga_grow(&highlight_ga, 1); - - memset(&(HL_TABLE()[highlight_ga.ga_len]), 0, sizeof(struct hl_group)); - HL_TABLE()[highlight_ga.ga_len].sg_name = name; - HL_TABLE()[highlight_ga.ga_len].sg_name_u = vim_strsave_up(name); - ++highlight_ga.ga_len; - - return highlight_ga.ga_len; /* ID is index plus one */ -} - -/* - * When, just after calling syn_add_group(), an error is discovered, this - * function deletes the new name. - */ -static void syn_unadd_group(void) -{ - --highlight_ga.ga_len; - free(HL_TABLE()[highlight_ga.ga_len].sg_name); - free(HL_TABLE()[highlight_ga.ga_len].sg_name_u); -} - -/* - * Translate a group ID to highlight attributes. - */ -int syn_id2attr(int hl_id) -{ - int attr; - struct hl_group *sgp; - - hl_id = syn_get_final_id(hl_id); - sgp = &HL_TABLE()[hl_id - 1]; /* index is ID minus one */ - - if (t_colors > 1) - attr = sgp->sg_cterm_attr; - else - attr = sgp->sg_term_attr; - - return attr; -} - - -/* - * Translate a group ID to the final group ID (following links). - */ -int syn_get_final_id(int hl_id) -{ - int count; - struct hl_group *sgp; - - if (hl_id > highlight_ga.ga_len || hl_id < 1) - return 0; /* Can be called from eval!! */ - - /* - * Follow links until there is no more. - * Look out for loops! Break after 100 links. - */ - for (count = 100; --count >= 0; ) { - sgp = &HL_TABLE()[hl_id - 1]; /* index is ID minus one */ - if (sgp->sg_link == 0 || sgp->sg_link > highlight_ga.ga_len) - break; - hl_id = sgp->sg_link; - } - - return hl_id; -} - - -/* - * Translate the 'highlight' option into attributes in highlight_attr[] and - * set up the user highlights User1..9. If FEAT_STL_OPT is in use, a set of - * corresponding highlights to use on top of HLF_SNC is computed. - * Called only when the 'highlight' option has been changed and upon first - * screen redraw after any :highlight command. - * Return FAIL when an invalid flag is found in 'highlight'. OK otherwise. - */ -int highlight_changed(void) -{ - int hlf; - int i; - char_u *p; - int attr; - char_u *end; - int id; -#ifdef USER_HIGHLIGHT - char_u userhl[10]; - int id_SNC = -1; - int id_S = -1; - int hlcnt; -#endif - static int hl_flags[HLF_COUNT] = HL_FLAGS; - - need_highlight_changed = FALSE; - - /* - * Clear all attributes. - */ - for (hlf = 0; hlf < (int)HLF_COUNT; ++hlf) - highlight_attr[hlf] = 0; - - /* - * First set all attributes to their default value. - * Then use the attributes from the 'highlight' option. - */ - for (i = 0; i < 2; ++i) { - if (i) - p = p_hl; - else - p = get_highlight_default(); - if (p == NULL) /* just in case */ - continue; - - while (*p) { - for (hlf = 0; hlf < (int)HLF_COUNT; ++hlf) - if (hl_flags[hlf] == *p) - break; - ++p; - if (hlf == (int)HLF_COUNT || *p == NUL) - return FAIL; - - /* - * Allow several hl_flags to be combined, like "bu" for - * bold-underlined. - */ - attr = 0; - for (; *p && *p != ','; ++p) { /* parse upto comma */ - if (vim_iswhite(*p)) /* ignore white space */ - continue; - - if (attr > HL_ALL) /* Combination with ':' is not allowed. */ - return FAIL; - - switch (*p) { - case 'b': attr |= HL_BOLD; - break; - case 'i': attr |= HL_ITALIC; - break; - case '-': - case 'n': /* no highlighting */ - break; - case 'r': attr |= HL_INVERSE; - break; - case 's': attr |= HL_STANDOUT; - break; - case 'u': attr |= HL_UNDERLINE; - break; - case 'c': attr |= HL_UNDERCURL; - break; - case ':': ++p; /* highlight group name */ - if (attr || *p == NUL) /* no combinations */ - return FAIL; - end = vim_strchr(p, ','); - if (end == NULL) - end = p + STRLEN(p); - id = syn_check_group(p, (int)(end - p)); - if (id == 0) - return FAIL; - attr = syn_id2attr(id); - p = end - 1; -#if defined(FEAT_STL_OPT) && defined(USER_HIGHLIGHT) - if (hlf == (int)HLF_SNC) - id_SNC = syn_get_final_id(id); - else if (hlf == (int)HLF_S) - id_S = syn_get_final_id(id); -#endif - break; - default: return FAIL; - } - } - highlight_attr[hlf] = attr; - - p = skip_to_option_part(p); /* skip comma and spaces */ - } - } - -#ifdef USER_HIGHLIGHT - /* Setup the user highlights - * - * Temporarily utilize 10 more hl entries. Have to be in there - * simultaneously in case of table overflows in get_attr_entry() - */ - ga_grow(&highlight_ga, 10); - hlcnt = highlight_ga.ga_len; - if (id_S == 0) { /* Make sure id_S is always valid to simplify code below */ - memset(&HL_TABLE()[hlcnt + 9], 0, sizeof(struct hl_group)); - HL_TABLE()[hlcnt + 9].sg_term = highlight_attr[HLF_S]; - id_S = hlcnt + 10; - } - for (i = 0; i < 9; i++) { - sprintf((char *)userhl, "User%d", i + 1); - id = syn_name2id(userhl); - if (id == 0) { - highlight_user[i] = 0; - highlight_stlnc[i] = 0; - } else { - struct hl_group *hlt = HL_TABLE(); - - highlight_user[i] = syn_id2attr(id); - if (id_SNC == 0) { - memset(&hlt[hlcnt + i], 0, sizeof(struct hl_group)); - hlt[hlcnt + i].sg_term = highlight_attr[HLF_SNC]; - hlt[hlcnt + i].sg_cterm = highlight_attr[HLF_SNC]; - hlt[hlcnt + i].sg_gui = highlight_attr[HLF_SNC]; - } else - memmove(&hlt[hlcnt + i], - &hlt[id_SNC - 1], - sizeof(struct hl_group)); - hlt[hlcnt + i].sg_link = 0; - - /* Apply difference between UserX and HLF_S to HLF_SNC */ - hlt[hlcnt + i].sg_term ^= - hlt[id - 1].sg_term ^ hlt[id_S - 1].sg_term; - if (hlt[id - 1].sg_start != hlt[id_S - 1].sg_start) - hlt[hlcnt + i].sg_start = hlt[id - 1].sg_start; - if (hlt[id - 1].sg_stop != hlt[id_S - 1].sg_stop) - hlt[hlcnt + i].sg_stop = hlt[id - 1].sg_stop; - hlt[hlcnt + i].sg_cterm ^= - hlt[id - 1].sg_cterm ^ hlt[id_S - 1].sg_cterm; - if (hlt[id - 1].sg_cterm_fg != hlt[id_S - 1].sg_cterm_fg) - hlt[hlcnt + i].sg_cterm_fg = hlt[id - 1].sg_cterm_fg; - if (hlt[id - 1].sg_cterm_bg != hlt[id_S - 1].sg_cterm_bg) - hlt[hlcnt + i].sg_cterm_bg = hlt[id - 1].sg_cterm_bg; - hlt[hlcnt + i].sg_gui ^= - hlt[id - 1].sg_gui ^ hlt[id_S - 1].sg_gui; - highlight_ga.ga_len = hlcnt + i + 1; - set_hl_attr(hlcnt + i); /* At long last we can apply */ - highlight_stlnc[i] = syn_id2attr(hlcnt + i + 1); - } - } - highlight_ga.ga_len = hlcnt; - -#endif /* USER_HIGHLIGHT */ - - return OK; -} - -static void highlight_list(void); -static void highlight_list_two(int cnt, int attr); - -/* - * Handle command line completion for :highlight command. - */ -void set_context_in_highlight_cmd(expand_T *xp, char_u *arg) -{ - char_u *p; - - /* Default: expand group names */ - xp->xp_context = EXPAND_HIGHLIGHT; - xp->xp_pattern = arg; - include_link = 2; - include_default = 1; - - /* (part of) subcommand already typed */ - if (*arg != NUL) { - p = skiptowhite(arg); - if (*p != NUL) { /* past "default" or group name */ - include_default = 0; - if (STRNCMP("default", arg, p - arg) == 0) { - arg = skipwhite(p); - xp->xp_pattern = arg; - p = skiptowhite(arg); - } - if (*p != NUL) { /* past group name */ - include_link = 0; - if (arg[1] == 'i' && arg[0] == 'N') - highlight_list(); - if (STRNCMP("link", arg, p - arg) == 0 - || STRNCMP("clear", arg, p - arg) == 0) { - xp->xp_pattern = skipwhite(p); - p = skiptowhite(xp->xp_pattern); - if (*p != NUL) { /* past first group name */ - xp->xp_pattern = skipwhite(p); - p = skiptowhite(xp->xp_pattern); - } - } - if (*p != NUL) /* past group name(s) */ - xp->xp_context = EXPAND_NOTHING; - } - } - } -} - -/* - * List highlighting matches in a nice way. - */ -static void highlight_list(void) -{ - int i; - - for (i = 10; --i >= 0; ) - highlight_list_two(i, hl_attr(HLF_D)); - for (i = 40; --i >= 0; ) - highlight_list_two(99, 0); -} - -static void highlight_list_two(int cnt, int attr) -{ - msg_puts_attr((char_u *)&("N \bI \b! \b"[cnt / 11]), attr); - msg_clr_eos(); - out_flush(); - ui_delay(cnt == 99 ? 40L : (long)cnt * 50L, FALSE); -} - - -#if defined(FEAT_CMDL_COMPL) || (defined(FEAT_SYN_HL) && defined(FEAT_EVAL)) \ - || defined(FEAT_SIGNS) || defined(PROTO) -/* - * Function given to ExpandGeneric() to obtain the list of group names. - * Also used for synIDattr() function. - */ -char_u *get_highlight_name(expand_T *xp, int idx) -{ - //TODO: 'xp' is unused - if (idx == highlight_ga.ga_len && include_none != 0) - return (char_u *)"none"; - if (idx == highlight_ga.ga_len + include_none && include_default != 0) - return (char_u *)"default"; - if (idx == highlight_ga.ga_len + include_none + include_default - && include_link != 0) - return (char_u *)"link"; - if (idx == highlight_ga.ga_len + include_none + include_default + 1 - && include_link != 0) - return (char_u *)"clear"; - if (idx < 0 || idx >= highlight_ga.ga_len) - return NULL; - return HL_TABLE()[idx].sg_name; -} -#endif - - -/************************************** -* End of Highlighting stuff * -**************************************/ |