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authorEliseo Martínez <eliseomarmol@gmail.com>2014-05-12 02:25:17 +0200
committerEliseo Martínez <eliseomarmol@gmail.com>2014-05-15 20:46:01 +0200
commitda51dc9cf202772f60bd2da975dbef257bd9237c (patch)
tree5c16b93238a153f55634e9323077f30c8133970c /src/nvim/ex_eval.h
parentffe61e5ba1721340ca51d56bae3ddaca415fb5bc (diff)
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Introduce nvim namespace: Move files.
Move files from src/ to src/nvim/. - src/nvim/ becomes the new root dir for nvim executable sources. - src/libnvim/ is planned to become root dir of the neovim library.
Diffstat (limited to 'src/nvim/ex_eval.h')
-rw-r--r--src/nvim/ex_eval.h159
1 files changed, 159 insertions, 0 deletions
diff --git a/src/nvim/ex_eval.h b/src/nvim/ex_eval.h
new file mode 100644
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+++ b/src/nvim/ex_eval.h
@@ -0,0 +1,159 @@
+#ifndef NEOVIM_EX_EVAL_H
+#define NEOVIM_EX_EVAL_H
+
+/*
+ * A list used for saving values of "emsg_silent". Used by ex_try() to save the
+ * value of "emsg_silent" if it was non-zero. When this is done, the CSF_SILENT
+ * flag below is set.
+ */
+
+typedef struct eslist_elem eslist_T;
+struct eslist_elem {
+ int saved_emsg_silent; /* saved value of "emsg_silent" */
+ eslist_T *next; /* next element on the list */
+};
+
+/*
+ * For conditional commands a stack is kept of nested conditionals.
+ * When cs_idx < 0, there is no conditional command.
+ */
+#define CSTACK_LEN 50
+
+struct condstack {
+ short cs_flags[CSTACK_LEN]; /* CSF_ flags */
+ char cs_pending[CSTACK_LEN]; /* CSTP_: what's pending in ":finally"*/
+ union {
+ void *csp_rv[CSTACK_LEN]; /* return typeval for pending return */
+ void *csp_ex[CSTACK_LEN]; /* exception for pending throw */
+ } cs_pend;
+ void *cs_forinfo[CSTACK_LEN]; /* info used by ":for" */
+ int cs_line[CSTACK_LEN]; /* line nr of ":while"/":for" line */
+ int cs_idx; /* current entry, or -1 if none */
+ int cs_looplevel; /* nr of nested ":while"s and ":for"s */
+ int cs_trylevel; /* nr of nested ":try"s */
+ eslist_T *cs_emsg_silent_list; /* saved values of "emsg_silent" */
+ char cs_lflags; /* loop flags: CSL_ flags */
+};
+# define cs_rettv cs_pend.csp_rv
+# define cs_exception cs_pend.csp_ex
+
+/* There is no CSF_IF, the lack of CSF_WHILE, CSF_FOR and CSF_TRY means ":if"
+ * was used. */
+# define CSF_TRUE 0x0001 /* condition was TRUE */
+# define CSF_ACTIVE 0x0002 /* current state is active */
+# define CSF_ELSE 0x0004 /* ":else" has been passed */
+# define CSF_WHILE 0x0008 /* is a ":while" */
+# define CSF_FOR 0x0010 /* is a ":for" */
+
+# define CSF_TRY 0x0100 /* is a ":try" */
+# define CSF_FINALLY 0x0200 /* ":finally" has been passed */
+# define CSF_THROWN 0x0400 /* exception thrown to this try conditional */
+# define CSF_CAUGHT 0x0800 /* exception caught by this try conditional */
+# define CSF_SILENT 0x1000 /* "emsg_silent" reset by ":try" */
+/* Note that CSF_ELSE is only used when CSF_TRY and CSF_WHILE are unset
+ * (an ":if"), and CSF_SILENT is only used when CSF_TRY is set. */
+
+/*
+ * What's pending for being reactivated at the ":endtry" of this try
+ * conditional:
+ */
+# define CSTP_NONE 0 /* nothing pending in ":finally" clause */
+# define CSTP_ERROR 1 /* an error is pending */
+# define CSTP_INTERRUPT 2 /* an interrupt is pending */
+# define CSTP_THROW 4 /* a throw is pending */
+# define CSTP_BREAK 8 /* ":break" is pending */
+# define CSTP_CONTINUE 16 /* ":continue" is pending */
+# define CSTP_RETURN 24 /* ":return" is pending */
+# define CSTP_FINISH 32 /* ":finish" is pending */
+
+/*
+ * Flags for the cs_lflags item in struct condstack.
+ */
+# define CSL_HAD_LOOP 1 /* just found ":while" or ":for" */
+# define CSL_HAD_ENDLOOP 2 /* just found ":endwhile" or ":endfor" */
+# define CSL_HAD_CONT 4 /* just found ":continue" */
+# define CSL_HAD_FINA 8 /* just found ":finally" */
+
+/*
+ * A list of error messages that can be converted to an exception. "throw_msg"
+ * is only set in the first element of the list. Usually, it points to the
+ * original message stored in that element, but sometimes it points to a later
+ * message in the list. See cause_errthrow() below.
+ */
+struct msglist {
+ char_u *msg; /* original message */
+ char_u *throw_msg; /* msg to throw: usually original one */
+ struct msglist *next; /* next of several messages in a row */
+};
+
+/*
+ * Structure describing an exception.
+ * (don't use "struct exception", it's used by the math library).
+ */
+typedef struct vim_exception except_T;
+struct vim_exception {
+ int type; /* exception type */
+ char_u *value; /* exception value */
+ struct msglist *messages; /* message(s) causing error exception */
+ char_u *throw_name; /* name of the throw point */
+ linenr_T throw_lnum; /* line number of the throw point */
+ except_T *caught; /* next exception on the caught stack */
+};
+
+/*
+ * The exception types.
+ */
+#define ET_USER 0 /* exception caused by ":throw" command */
+#define ET_ERROR 1 /* error exception */
+#define ET_INTERRUPT 2 /* interrupt exception triggered by Ctrl-C */
+
+/*
+ * Structure to save the error/interrupt/exception state between calls to
+ * enter_cleanup() and leave_cleanup(). Must be allocated as an automatic
+ * variable by the (common) caller of these functions.
+ */
+typedef struct cleanup_stuff cleanup_T;
+struct cleanup_stuff {
+ int pending; /* error/interrupt/exception state */
+ except_T *exception; /* exception value */
+};
+
+/* ex_eval.c */
+int aborting(void);
+void update_force_abort(void);
+int should_abort(int retcode);
+int aborted_in_try(void);
+int cause_errthrow(char_u *mesg, int severe, int *ignore);
+void free_global_msglist(void);
+void do_errthrow(struct condstack *cstack, char_u *cmdname);
+int do_intthrow(struct condstack *cstack);
+char_u *get_exception_string(void *value, int type, char_u *cmdname,
+ int *should_free);
+void discard_current_exception(void);
+void report_make_pending(int pending, void *value);
+void report_resume_pending(int pending, void *value);
+void report_discard_pending(int pending, void *value);
+void ex_if(exarg_T *eap);
+void ex_endif(exarg_T *eap);
+void ex_else(exarg_T *eap);
+void ex_while(exarg_T *eap);
+void ex_continue(exarg_T *eap);
+void ex_break(exarg_T *eap);
+void ex_endwhile(exarg_T *eap);
+void ex_throw(exarg_T *eap);
+void do_throw(struct condstack *cstack);
+void ex_try(exarg_T *eap);
+void ex_catch(exarg_T *eap);
+void ex_finally(exarg_T *eap);
+void ex_endtry(exarg_T *eap);
+void enter_cleanup(cleanup_T *csp);
+void leave_cleanup(cleanup_T *csp);
+int cleanup_conditionals(struct condstack *cstack, int searched_cond,
+ int inclusive);
+void rewind_conditionals(struct condstack *cstack, int idx,
+ int cond_type,
+ int *cond_level);
+void ex_endfunction(exarg_T *eap);
+int has_loop_cmd(char_u *p);
+
+#endif /* NEOVIM_EX_EVAL_H */