Patch 8.1.1933
Problem: The eval.c file is too big.
Solution: Move code related to variables to evalvars.c. (Yegappan
Lakshmanan, closes #4868)
Files: Filelist, src/Make_cyg_ming.mak, src/Make_morph.mak,
src/Make_mvc.mak, src/Make_vms.mms, src/Makefile, src/README.md,
src/eval.c, src/evalfunc.c, src/evalvars.c, src/globals.h,
src/proto.h, src/proto/eval.pro, src/proto/evalvars.pro, src/vim.h
*** ../vim-8.1.1932/Filelist 2019-08-25 15:40:39.658739525 +0200
--- Filelist 2019-08-27 22:37:44.273253741 +0200
***************
*** 35,40 ****
--- 35,41 ----
src/edit.c \
src/eval.c \
src/evalfunc.c \
+ src/evalvars.c \
src/ex_cmdidxs.h \
src/ex_cmds.c \
src/ex_cmds.h \
***************
*** 188,193 ****
--- 189,195 ----
src/proto/edit.pro \
src/proto/eval.pro \
src/proto/evalfunc.pro \
+ src/proto/evalvars.pro \
src/proto/ex_cmds.pro \
src/proto/ex_cmds2.pro \
src/proto/ex_docmd.pro \
*** ../vim-8.1.1932/src/Make_cyg_ming.mak 2019-08-25 15:40:39.658739525
+0200
--- src/Make_cyg_ming.mak 2019-08-27 22:37:44.273253741 +0200
***************
*** 722,727 ****
--- 722,728 ----
$(OUTDIR)/edit.o \
$(OUTDIR)/eval.o \
$(OUTDIR)/evalfunc.o \
+ $(OUTDIR)/evalvars.o \
$(OUTDIR)/ex_cmds.o \
$(OUTDIR)/ex_cmds2.o \
$(OUTDIR)/ex_docmd.o \
*** ../vim-8.1.1932/src/Make_morph.mak 2019-08-25 15:40:39.658739525 +0200
--- src/Make_morph.mak 2019-08-27 22:37:44.273253741 +0200
***************
*** 42,47 ****
--- 42,48 ----
edit.c \
eval.c \
evalfunc.c \
+ evalvars.c \
ex_cmds.c \
ex_cmds2.c \
ex_docmd.c \
*** ../vim-8.1.1932/src/Make_mvc.mak 2019-08-25 15:40:39.658739525 +0200
--- src/Make_mvc.mak 2019-08-27 22:37:44.273253741 +0200
***************
*** 731,736 ****
--- 731,737 ----
$(OUTDIR)\edit.obj \
$(OUTDIR)\eval.obj \
$(OUTDIR)\evalfunc.obj \
+ $(OUTDIR)\evalvars.obj \
$(OUTDIR)\ex_cmds.obj \
$(OUTDIR)\ex_cmds2.obj \
$(OUTDIR)\ex_docmd.obj \
***************
*** 1486,1491 ****
--- 1487,1494 ----
$(OUTDIR)/evalfunc.obj: $(OUTDIR) evalfunc.c $(INCL)
+ $(OUTDIR)/evalvars.obj: $(OUTDIR) evalvars.c $(INCL)
+
$(OUTDIR)/ex_cmds.obj: $(OUTDIR) ex_cmds.c $(INCL)
$(OUTDIR)/ex_cmds2.obj: $(OUTDIR) ex_cmds2.c $(INCL)
***************
*** 1771,1776 ****
--- 1774,1780 ----
proto/edit.pro \
proto/eval.pro \
proto/evalfunc.pro \
+ proto/evalvars.pro \
proto/ex_cmds.pro \
proto/ex_cmds2.pro \
proto/ex_docmd.pro \
*** ../vim-8.1.1932/src/Make_vms.mms 2019-08-25 15:40:39.658739525 +0200
--- src/Make_vms.mms 2019-08-27 22:37:44.273253741 +0200
***************
*** 309,315 ****
SRC = arabic.c arglist.c autocmd.c beval.c blob.c blowfish.c buffer.c \
change.c charset.c cmdexpand.c cmdhist.c crypt.c crypt_zip.c \
! debugger.c dict.c diff.c digraph.c edit.c eval.c evalfunc.c ex_cmds.c \
ex_cmds2.c ex_docmd.c ex_eval.c ex_getln.c if_cscope.c if_xcmdsrv.c \
fileio.c findfile.c fold.c getchar.c hardcopy.c hashtab.c highlight.c \
indent.c insexpand.c json.c list.c main.c map.c mark.c menu.c mbyte.c \
--- 309,316 ----
SRC = arabic.c arglist.c autocmd.c beval.c blob.c blowfish.c buffer.c \
change.c charset.c cmdexpand.c cmdhist.c crypt.c crypt_zip.c \
! debugger.c dict.c diff.c digraph.c edit.c eval.c evalfunc.c \
! evalvars.c ex_cmds.c \
ex_cmds2.c ex_docmd.c ex_eval.c ex_getln.c if_cscope.c if_xcmdsrv.c \
fileio.c findfile.c fold.c getchar.c hardcopy.c hashtab.c highlight.c \
indent.c insexpand.c json.c list.c main.c map.c mark.c menu.c mbyte.c \
***************
*** 326,332 ****
OBJ = arabic.obj arglist.obj autocmd.obj beval.obj blob.obj
blowfish.obj \
buffer.obj change.obj charset.obj cmdexpand.obj cmdhist.obj \
crypt.obj crypt_zip.obj debugger.obj dict.obj diff.obj digraph.obj \
! edit.obj eval.obj evalfunc.obj ex_cmds.obj ex_cmds2.obj ex_docmd.obj \
ex_eval.obj ex_getln.obj if_cscope.obj if_xcmdsrv.obj fileio.obj \
findfile.obj fold.obj getchar.obj hardcopy.obj hashtab.obj \
highlight.obj indent.obj insexpand.obj json.obj list.obj main.obj \
--- 327,334 ----
OBJ = arabic.obj arglist.obj autocmd.obj beval.obj blob.obj
blowfish.obj \
buffer.obj change.obj charset.obj cmdexpand.obj cmdhist.obj \
crypt.obj crypt_zip.obj debugger.obj dict.obj diff.obj digraph.obj \
! edit.obj eval.obj evalfunc.obj evalvars.obj ex_cmds.obj ex_cmds2.obj \
! ex_docmd.obj \
ex_eval.obj ex_getln.obj if_cscope.obj if_xcmdsrv.obj fileio.obj \
findfile.obj fold.obj getchar.obj hardcopy.obj hashtab.obj \
highlight.obj indent.obj insexpand.obj json.obj list.obj main.obj \
***************
*** 569,574 ****
--- 571,580 ----
ascii.h keymap.h term.h macros.h option.h structs.h \
regexp.h gui.h beval.h [.proto]gui_beval.pro alloc.h ex_cmds.h spell.h \
proto.h globals.h version.h
+ evalvars.obj : evalvars.c vim.h [.auto]config.h feature.h os_unix.h \
+ ascii.h keymap.h term.h macros.h option.h structs.h \
+ regexp.h gui.h beval.h [.proto]gui_beval.pro alloc.h ex_cmds.h spell.h \
+ proto.h globals.h version.h
ex_cmds.obj : ex_cmds.c vim.h [.auto]config.h feature.h os_unix.h \
ascii.h keymap.h term.h macros.h structs.h regexp.h \
gui.h beval.h [.proto]gui_beval.pro option.h ex_cmds.h proto.h \
*** ../vim-8.1.1932/src/Makefile 2019-08-25 15:40:39.658739525 +0200
--- src/Makefile 2019-08-27 22:37:44.273253741 +0200
***************
*** 1596,1601 ****
--- 1596,1602 ----
edit.c \
eval.c \
evalfunc.c \
+ evalvars.c \
ex_cmds.c \
ex_cmds2.c \
ex_docmd.c \
***************
*** 1725,1730 ****
--- 1726,1732 ----
objects/edit.o \
objects/eval.o \
objects/evalfunc.o \
+ objects/evalvars.o \
objects/ex_cmds.o \
objects/ex_cmds2.o \
objects/ex_docmd.o \
***************
*** 1867,1872 ****
--- 1869,1875 ----
edit.pro \
eval.pro \
evalfunc.pro \
+ evalvars.pro \
ex_cmds.pro \
ex_cmds2.pro \
ex_docmd.pro \
***************
*** 3052,3057 ****
--- 3055,3063 ----
objects/evalfunc.o: evalfunc.c
$(CCC) -o $@ evalfunc.c
+ objects/evalvars.o: evalvars.c
+ $(CCC) -o $@ evalvars.c
+
objects/ex_cmds.o: ex_cmds.c
$(CCC) -o $@ ex_cmds.c
***************
*** 3570,3575 ****
--- 3576,3585 ----
auto/osdef.h ascii.h keymap.h term.h macros.h option.h beval.h \
proto/gui_beval.pro structs.h regexp.h gui.h alloc.h ex_cmds.h spell.h \
proto.h globals.h version.h
+ objects/evalvars.o: evalvars.c vim.h protodef.h auto/config.h feature.h \
+ os_unix.h auto/osdef.h ascii.h keymap.h term.h macros.h option.h beval.h \
+ proto/gui_beval.pro structs.h regexp.h gui.h alloc.h ex_cmds.h spell.h \
+ proto.h globals.h
objects/ex_cmds.o: ex_cmds.c vim.h protodef.h auto/config.h feature.h
os_unix.h \
auto/osdef.h ascii.h keymap.h term.h macros.h option.h beval.h \
proto/gui_beval.pro structs.h regexp.h gui.h alloc.h ex_cmds.h spell.h \
*** ../vim-8.1.1932/src/README.md 2019-08-25 15:40:39.658739525 +0200
--- src/README.md 2019-08-27 22:37:44.273253741 +0200
***************
*** 34,39 ****
--- 34,40 ----
diff.c | diff mode (vimdiff)
eval.c | expression evaluation
evalfunc.c | built-in functions
+ evalvars.c | vim variables
fileio.c | reading and writing files
findfile.c | search for files in 'path'
fold.c | folding
*** ../vim-8.1.1932/src/eval.c 2019-08-23 20:58:42.020375498 +0200
--- src/eval.c 2019-08-27 22:37:44.277253720 +0200
***************
*** 20,34 ****
# include <float.h>
#endif
- #define DICT_MAXNEST 100 /* maximum nesting of lists and dicts */
-
- static char *e_letunexp = N_("E18: Unexpected characters in :let");
- static char *e_undefvar = N_("E121: Undefined variable: %s");
static char *e_missbrac = N_("E111: Missing ']'");
static char *e_dictrange = N_("E719: Cannot use [:] with a Dictionary");
- static char *e_letwrong = N_("E734: Wrong variable type for %s=");
- static char *e_illvar = N_("E461: Illegal variable name: %s");
- static char *e_cannot_mod = N_("E995: Cannot modify existing variable");
#ifdef FEAT_FLOAT
static char *e_float_as_string = N_("E806: using Float as a String");
#endif
--- 20,27 ----
***************
*** 217,241 ****
static dictitem_T vimvars_var; /* variable used for v: */
#define vimvarht vimvardict.dv_hashtab
- static void ex_let_const(exarg_T *eap, int is_const);
- static int ex_let_vars(char_u *arg, typval_T *tv, int copy, int semicolon,
int var_count, int is_const, char_u *nextchars);
- static char_u *skip_var_list(char_u *arg, int *var_count, int *semicolon);
- static char_u *skip_var_one(char_u *arg);
- static void list_glob_vars(int *first);
- static void list_buf_vars(int *first);
- static void list_win_vars(int *first);
- static void list_tab_vars(int *first);
- static void list_vim_vars(int *first);
- static void list_script_vars(int *first);
- static char_u *list_arg_vars(exarg_T *eap, char_u *arg, int *first);
- static char_u *ex_let_one(char_u *arg, typval_T *tv, int copy, int is_const,
char_u *endchars, char_u *op);
- static void set_var_lval(lval_T *lp, char_u *endp, typval_T *rettv, int copy,
int is_const, char_u *op);
static int tv_op(typval_T *tv1, typval_T *tv2, char_u *op);
- static void ex_unletlock(exarg_T *eap, char_u *argstart, int deep);
- static int do_unlet_var(lval_T *lp, char_u *name_end, int forceit);
- static int do_lock_var(lval_T *lp, char_u *name_end, int deep, int lock);
- static void item_lock(typval_T *tv, int deep, int lock);
-
static int eval2(char_u **arg, typval_T *rettv, int evaluate);
static int eval3(char_u **arg, typval_T *rettv, int evaluate);
static int eval4(char_u **arg, typval_T *rettv, int evaluate);
--- 210,216 ----
***************
*** 248,265 ****
static int get_lit_string_tv(char_u **arg, typval_T *rettv, int evaluate);
static int free_unref_items(int copyID);
static int get_env_tv(char_u **arg, typval_T *rettv, int evaluate);
- static int get_env_len(char_u **arg);
- static int get_name_len(char_u **arg, char_u **alias, int evaluate, int
verbose);
static char_u *make_expanded_name(char_u *in_start, char_u *expr_start,
char_u *expr_end, char_u *in_end);
- static int get_var_tv(char_u *name, int len, typval_T *rettv, dictitem_T
**dip, int verbose, int no_autoload);
static void check_vars(char_u *name, int len);
static typval_T *alloc_string_tv(char_u *string);
- static void delete_var(hashtab_T *ht, hashitem_T *hi);
- static void list_one_var(dictitem_T *v, char *prefix, int *first);
- static void list_one_var_a(char *prefix, char_u *name, int type, char_u
*string, int *first);
- static void set_var_const(char_u *name, typval_T *tv, int copy, int is_const);
static int tv_check_lock(typval_T *tv, char_u *name, int use_gettext);
- static char_u *find_option_end(char_u **arg, int *opt_flags);
/* for VIM_VERSION_ defines */
#include "version.h"
--- 223,232 ----
***************
*** 267,273 ****
/*
* Return "n1" divided by "n2", taking care of dividing by zero.
*/
! static varnumber_T
num_divide(varnumber_T n1, varnumber_T n2)
{
varnumber_T result;
--- 234,240 ----
/*
* Return "n1" divided by "n2", taking care of dividing by zero.
*/
! varnumber_T
num_divide(varnumber_T n1, varnumber_T n2)
{
varnumber_T result;
***************
*** 290,296 ****
/*
* Return "n1" modulus "n2", taking care of dividing by zero.
*/
! static varnumber_T
num_modulus(varnumber_T n1, varnumber_T n2)
{
// Give an error when n2 is 0?
--- 257,263 ----
/*
* Return "n1" modulus "n2", taking care of dividing by zero.
*/
! varnumber_T
num_modulus(varnumber_T n1, varnumber_T n2)
{
// Give an error when n2 is 0?
***************
*** 978,983 ****
--- 945,982 ----
}
/*
+ * List Vim variables.
+ */
+ void
+ list_vim_vars(int *first)
+ {
+ list_hashtable_vars(&vimvarht, "v:", FALSE, first);
+ }
+
+ /*
+ * List script-local variables, if there is a script.
+ */
+ void
+ list_script_vars(int *first)
+ {
+ if (current_sctx.sc_sid > 0 && current_sctx.sc_sid <= ga_scripts.ga_len)
+ list_hashtable_vars(&SCRIPT_VARS(current_sctx.sc_sid),
+ "s:", FALSE, first);
+ }
+
+ int
+ is_vimvarht(hashtab_T *ht)
+ {
+ return ht == &vimvarht;
+ }
+
+ int
+ is_compatht(hashtab_T *ht)
+ {
+ return ht == &compat_hashtab;
+ }
+
+ /*
* Prepare v: variable "idx" to be used.
* Save the current typeval in "save_tv".
* When not used yet add the variable to the v: hashtable.
***************
*** 1237,2085 ****
#endif
/*
- * Get a list of lines from a HERE document. The here document is a list of
- * lines surrounded by a marker.
- * cmd << {marker}
- * {line1}
- * {line2}
- * ....
- * {marker}
- *
- * The {marker} is a string. If the optional 'trim' word is supplied before
the
- * marker, then the leading indentation before the lines (matching the
- * indentation in the 'cmd' line) is stripped.
- * Returns a List with {lines} or NULL.
- */
- static list_T *
- heredoc_get(exarg_T *eap, char_u *cmd)
- {
- char_u *theline;
- char_u *marker;
- list_T *l;
- char_u *p;
- int marker_indent_len = 0;
- int text_indent_len = 0;
- char_u *text_indent = NULL;
-
- if (eap->getline == NULL)
- {
- emsg(_("E991: cannot use =<< here"));
- return NULL;
- }
-
- // Check for the optional 'trim' word before the marker
- cmd = skipwhite(cmd);
- if (STRNCMP(cmd, "trim", 4) == 0 && (cmd[4] == NUL ||
VIM_ISWHITE(cmd[4])))
- {
- cmd = skipwhite(cmd + 4);
-
- // Trim the indentation from all the lines in the here document.
- // The amount of indentation trimmed is the same as the indentation of
- // the first line after the :let command line. To find the end marker
- // the indent of the :let command line is trimmed.
- p = *eap->cmdlinep;
- while (VIM_ISWHITE(*p))
- {
- p++;
- marker_indent_len++;
- }
- text_indent_len = -1;
- }
-
- // The marker is the next word.
- if (*cmd != NUL && *cmd != '"')
- {
- marker = skipwhite(cmd);
- p = skiptowhite(marker);
- if (*skipwhite(p) != NUL && *skipwhite(p) != '"')
- {
- emsg(_(e_trailing));
- return NULL;
- }
- *p = NUL;
- if (vim_islower(*marker))
- {
- emsg(_("E221: Marker cannot start with lower case letter"));
- return NULL;
- }
- }
- else
- {
- emsg(_("E172: Missing marker"));
- return NULL;
- }
-
- l = list_alloc();
- if (l == NULL)
- return NULL;
-
- for (;;)
- {
- int mi = 0;
- int ti = 0;
-
- theline = eap->getline(NUL, eap->cookie, 0, FALSE);
- if (theline == NULL)
- {
- semsg(_("E990: Missing end marker '%s'"), marker);
- break;
- }
-
- // with "trim": skip the indent matching the :let line to find the
- // marker
- if (marker_indent_len > 0
- && STRNCMP(theline, *eap->cmdlinep, marker_indent_len) == 0)
- mi = marker_indent_len;
- if (STRCMP(marker, theline + mi) == 0)
- {
- vim_free(theline);
- break;
- }
-
- if (text_indent_len == -1 && *theline != NUL)
- {
- // set the text indent from the first line.
- p = theline;
- text_indent_len = 0;
- while (VIM_ISWHITE(*p))
- {
- p++;
- text_indent_len++;
- }
- text_indent = vim_strnsave(theline, text_indent_len);
- }
- // with "trim": skip the indent matching the first line
- if (text_indent != NULL)
- for (ti = 0; ti < text_indent_len; ++ti)
- if (theline[ti] != text_indent[ti])
- break;
-
- if (list_append_string(l, theline + ti, -1) == FAIL)
- break;
- vim_free(theline);
- }
- vim_free(text_indent);
-
- return l;
- }
-
- /*
- * ":let" list all variable values
- * ":let var1 var2" list variable values
- * ":let var = expr" assignment command.
- * ":let var += expr" assignment command.
- * ":let var -= expr" assignment command.
- * ":let var *= expr" assignment command.
- * ":let var /= expr" assignment command.
- * ":let var %= expr" assignment command.
- * ":let var .= expr" assignment command.
- * ":let var ..= expr" assignment command.
- * ":let [var1, var2] = expr" unpack list.
- */
- void
- ex_let(exarg_T *eap)
- {
- ex_let_const(eap, FALSE);
- }
-
- /*
- * ":const" list all variable values
- * ":const var1 var2" list variable values
- * ":const var = expr" assignment command.
- * ":const [var1, var2] = expr" unpack list.
- */
- void
- ex_const(exarg_T *eap)
- {
- ex_let_const(eap, TRUE);
- }
-
- static void
- ex_let_const(exarg_T *eap, int is_const)
- {
- char_u *arg = eap->arg;
- char_u *expr = NULL;
- typval_T rettv;
- int i;
- int var_count = 0;
- int semicolon = 0;
- char_u op[2];
- char_u *argend;
- int first = TRUE;
- int concat;
-
- argend = skip_var_list(arg, &var_count, &semicolon);
- if (argend == NULL)
- return;
- if (argend > arg && argend[-1] == '.') // for var.='str'
- --argend;
- expr = skipwhite(argend);
- concat = expr[0] == '.'
- && ((expr[1] == '=' && current_sctx.sc_version < 2)
- || (expr[1] == '.' && expr[2] == '='));
- if (*expr != '=' && !((vim_strchr((char_u *)"+-*/%", *expr) != NULL
- && expr[1] == '=') || concat))
- {
- /*
- * ":let" without "=": list variables
- */
- if (*arg == '[')
- emsg(_(e_invarg));
- else if (expr[0] == '.')
- emsg(_("E985: .= is not supported with script version 2"));
- else if (!ends_excmd(*arg))
- /* ":let var1 var2" */
- arg = list_arg_vars(eap, arg, &first);
- else if (!eap->skip)
- {
- /* ":let" */
- list_glob_vars(&first);
- list_buf_vars(&first);
- list_win_vars(&first);
- list_tab_vars(&first);
- list_script_vars(&first);
- list_func_vars(&first);
- list_vim_vars(&first);
- }
- eap->nextcmd = check_nextcmd(arg);
- }
- else if (expr[0] == '=' && expr[1] == '<' && expr[2] == '<')
- {
- list_T *l;
-
- // HERE document
- l = heredoc_get(eap, expr + 3);
- if (l != NULL)
- {
- rettv_list_set(&rettv, l);
- op[0] = '=';
- op[1] = NUL;
- (void)ex_let_vars(eap->arg, &rettv, FALSE, semicolon, var_count,
- is_const, op);
- clear_tv(&rettv);
- }
- }
- else
- {
- op[0] = '=';
- op[1] = NUL;
- if (*expr != '=')
- {
- if (vim_strchr((char_u *)"+-*/%.", *expr) != NULL)
- {
- op[0] = *expr; // +=, -=, *=, /=, %= or .=
- if (expr[0] == '.' && expr[1] == '.') // ..=
- ++expr;
- }
- expr = skipwhite(expr + 2);
- }
- else
- expr = skipwhite(expr + 1);
-
- if (eap->skip)
- ++emsg_skip;
- i = eval0(expr, &rettv, &eap->nextcmd, !eap->skip);
- if (eap->skip)
- {
- if (i != FAIL)
- clear_tv(&rettv);
- --emsg_skip;
- }
- else if (i != FAIL)
- {
- (void)ex_let_vars(eap->arg, &rettv, FALSE, semicolon, var_count,
- is_const, op);
- clear_tv(&rettv);
- }
- }
- }
-
- /*
- * Assign the typevalue "tv" to the variable or variables at "arg_start".
- * Handles both "var" with any type and "[var, var; var]" with a list type.
- * When "op" is not NULL it points to a string with characters that
- * must appear after the variable(s). Use "+", "-" or "." for add, subtract
- * or concatenate.
- * Returns OK or FAIL;
- */
- static int
- ex_let_vars(
- char_u *arg_start,
- typval_T *tv,
- int copy, // copy values from "tv", don't move
- int semicolon, // from skip_var_list()
- int var_count, // from skip_var_list()
- int is_const, // lock variables for const
- char_u *op)
- {
- char_u *arg = arg_start;
- list_T *l;
- int i;
- listitem_T *item;
- typval_T ltv;
-
- if (*arg != '[')
- {
- /*
- * ":let var = expr" or ":for var in list"
- */
- if (ex_let_one(arg, tv, copy, is_const, op, op) == NULL)
- return FAIL;
- return OK;
- }
-
- /*
- * ":let [v1, v2] = list" or ":for [v1, v2] in listlist"
- */
- if (tv->v_type != VAR_LIST || (l = tv->vval.v_list) == NULL)
- {
- emsg(_(e_listreq));
- return FAIL;
- }
-
- i = list_len(l);
- if (semicolon == 0 && var_count < i)
- {
- emsg(_("E687: Less targets than List items"));
- return FAIL;
- }
- if (var_count - semicolon > i)
- {
- emsg(_("E688: More targets than List items"));
- return FAIL;
- }
-
- item = l->lv_first;
- while (*arg != ']')
- {
- arg = skipwhite(arg + 1);
- arg = ex_let_one(arg, &item->li_tv, TRUE, is_const,
- (char_u *)",;]", op);
- item = item->li_next;
- if (arg == NULL)
- return FAIL;
-
- arg = skipwhite(arg);
- if (*arg == ';')
- {
- /* Put the rest of the list (may be empty) in the var after ';'.
- * Create a new list for this. */
- l = list_alloc();
- if (l == NULL)
- return FAIL;
- while (item != NULL)
- {
- list_append_tv(l, &item->li_tv);
- item = item->li_next;
- }
-
- ltv.v_type = VAR_LIST;
- ltv.v_lock = 0;
- ltv.vval.v_list = l;
- l->lv_refcount = 1;
-
- arg = ex_let_one(skipwhite(arg + 1), <v, FALSE, is_const,
- (char_u *)"]", op);
- clear_tv(<v);
- if (arg == NULL)
- return FAIL;
- break;
- }
- else if (*arg != ',' && *arg != ']')
- {
- internal_error("ex_let_vars()");
- return FAIL;
- }
- }
-
- return OK;
- }
-
- /*
- * Skip over assignable variable "var" or list of variables "[var, var]".
- * Used for ":let varvar = expr" and ":for varvar in expr".
- * For "[var, var]" increment "*var_count" for each variable.
- * for "[var, var; var]" set "semicolon".
- * Return NULL for an error.
- */
- static char_u *
- skip_var_list(
- char_u *arg,
- int *var_count,
- int *semicolon)
- {
- char_u *p, *s;
-
- if (*arg == '[')
- {
- /* "[var, var]": find the matching ']'. */
- p = arg;
- for (;;)
- {
- p = skipwhite(p + 1); /* skip whites after '[', ';' or ',' */
- s = skip_var_one(p);
- if (s == p)
- {
- semsg(_(e_invarg2), p);
- return NULL;
- }
- ++*var_count;
-
- p = skipwhite(s);
- if (*p == ']')
- break;
- else if (*p == ';')
- {
- if (*semicolon == 1)
- {
- emsg(_("Double ; in list of variables"));
- return NULL;
- }
- *semicolon = 1;
- }
- else if (*p != ',')
- {
- semsg(_(e_invarg2), p);
- return NULL;
- }
- }
- return p + 1;
- }
- else
- return skip_var_one(arg);
- }
-
- /*
- * Skip one (assignable) variable name, including @r, $VAR, &option, d.key,
- * l[idx].
- */
- static char_u *
- skip_var_one(char_u *arg)
- {
- if (*arg == '@' && arg[1] != NUL)
- return arg + 2;
- return find_name_end(*arg == '$' || *arg == '&' ? arg + 1 : arg,
- NULL, NULL, FNE_INCL_BR | FNE_CHECK_START);
- }
-
- /*
- * List variables for hashtab "ht" with prefix "prefix".
- * If "empty" is TRUE also list NULL strings as empty strings.
- */
- void
- list_hashtable_vars(
- hashtab_T *ht,
- char *prefix,
- int empty,
- int *first)
- {
- hashitem_T *hi;
- dictitem_T *di;
- int todo;
- char_u buf[IOSIZE];
-
- todo = (int)ht->ht_used;
- for (hi = ht->ht_array; todo > 0 && !got_int; ++hi)
- {
- if (!HASHITEM_EMPTY(hi))
- {
- --todo;
- di = HI2DI(hi);
-
- // apply :filter /pat/ to variable name
- vim_strncpy((char_u *)buf, (char_u *)prefix, IOSIZE - 1);
- vim_strcat((char_u *)buf, di->di_key, IOSIZE);
- if (message_filtered(buf))
- continue;
-
- if (empty || di->di_tv.v_type != VAR_STRING
- || di->di_tv.vval.v_string != NULL)
- list_one_var(di, prefix, first);
- }
- }
- }
-
- /*
- * List global variables.
- */
- static void
- list_glob_vars(int *first)
- {
- list_hashtable_vars(&globvarht, "", TRUE, first);
- }
-
- /*
- * List buffer variables.
- */
- static void
- list_buf_vars(int *first)
- {
- list_hashtable_vars(&curbuf->b_vars->dv_hashtab, "b:", TRUE, first);
- }
-
- /*
- * List window variables.
- */
- static void
- list_win_vars(int *first)
- {
- list_hashtable_vars(&curwin->w_vars->dv_hashtab, "w:", TRUE, first);
- }
-
- /*
- * List tab page variables.
- */
- static void
- list_tab_vars(int *first)
- {
- list_hashtable_vars(&curtab->tp_vars->dv_hashtab, "t:", TRUE, first);
- }
-
- /*
- * List Vim variables.
- */
- static void
- list_vim_vars(int *first)
- {
- list_hashtable_vars(&vimvarht, "v:", FALSE, first);
- }
-
- /*
- * List script-local variables, if there is a script.
- */
- static void
- list_script_vars(int *first)
- {
- if (current_sctx.sc_sid > 0 && current_sctx.sc_sid <= ga_scripts.ga_len)
- list_hashtable_vars(&SCRIPT_VARS(current_sctx.sc_sid),
- "s:", FALSE, first);
- }
-
- /*
- * List variables in "arg".
- */
- static char_u *
- list_arg_vars(exarg_T *eap, char_u *arg, int *first)
- {
- int error = FALSE;
- int len;
- char_u *name;
- char_u *name_start;
- char_u *arg_subsc;
- char_u *tofree;
- typval_T tv;
-
- while (!ends_excmd(*arg) && !got_int)
- {
- if (error || eap->skip)
- {
- arg = find_name_end(arg, NULL, NULL, FNE_INCL_BR | FNE_CHECK_START);
- if (!VIM_ISWHITE(*arg) && !ends_excmd(*arg))
- {
- emsg_severe = TRUE;
- emsg(_(e_trailing));
- break;
- }
- }
- else
- {
- /* get_name_len() takes care of expanding curly braces */
- name_start = name = arg;
- len = get_name_len(&arg, &tofree, TRUE, TRUE);
- if (len <= 0)
- {
- /* This is mainly to keep test 49 working: when expanding
- * curly braces fails overrule the exception error message. */
- if (len < 0 && !aborting())
- {
- emsg_severe = TRUE;
- semsg(_(e_invarg2), arg);
- break;
- }
- error = TRUE;
- }
- else
- {
- if (tofree != NULL)
- name = tofree;
- if (get_var_tv(name, len, &tv, NULL, TRUE, FALSE) == FAIL)
- error = TRUE;
- else
- {
- /* handle d.key, l[idx], f(expr) */
- arg_subsc = arg;
- if (handle_subscript(&arg, &tv, TRUE, TRUE,
- name, &name) == FAIL)
- error = TRUE;
- else
- {
- if (arg == arg_subsc && len == 2 && name[1] == ':')
- {
- switch (*name)
- {
- case 'g': list_glob_vars(first); break;
- case 'b': list_buf_vars(first); break;
- case 'w': list_win_vars(first); break;
- case 't': list_tab_vars(first); break;
- case 'v': list_vim_vars(first); break;
- case 's': list_script_vars(first); break;
- case 'l': list_func_vars(first); break;
- default:
- semsg(_("E738: Can't list variables
for %s"), name);
- }
- }
- else
- {
- char_u numbuf[NUMBUFLEN];
- char_u *tf;
- int c;
- char_u *s;
-
- s = echo_string(&tv, &tf, numbuf, 0);
- c = *arg;
- *arg = NUL;
- list_one_var_a("",
- arg == arg_subsc ? name : name_start,
- tv.v_type,
- s == NULL ? (char_u *)"" : s,
- first);
- *arg = c;
- vim_free(tf);
- }
- clear_tv(&tv);
- }
- }
- }
-
- vim_free(tofree);
- }
-
- arg = skipwhite(arg);
- }
-
- return arg;
- }
-
- /*
- * Set one item of ":let var = expr" or ":let [v1, v2] = list" to its value.
- * Returns a pointer to the char just after the var name.
- * Returns NULL if there is an error.
- */
- static char_u *
- ex_let_one(
- char_u *arg, // points to variable name
- typval_T *tv, // value to assign to variable
- int copy, // copy value from "tv"
- int is_const, // lock variable for const
- char_u *endchars, // valid chars after variable name or NULL
- char_u *op) // "+", "-", "." or NULL
- {
- int c1;
- char_u *name;
- char_u *p;
- char_u *arg_end = NULL;
- int len;
- int opt_flags;
- char_u *tofree = NULL;
-
- /*
- * ":let $VAR = expr": Set environment variable.
- */
- if (*arg == '$')
- {
- if (is_const)
- {
- emsg(_("E996: Cannot lock an environment variable"));
- return NULL;
- }
- /* Find the end of the name. */
- ++arg;
- name = arg;
- len = get_env_len(&arg);
- if (len == 0)
- semsg(_(e_invarg2), name - 1);
- else
- {
- if (op != NULL && vim_strchr((char_u *)"+-*/%", *op) != NULL)
- semsg(_(e_letwrong), op);
- else if (endchars != NULL
- && vim_strchr(endchars, *skipwhite(arg)) == NULL)
- emsg(_(e_letunexp));
- else if (!check_secure())
- {
- c1 = name[len];
- name[len] = NUL;
- p = tv_get_string_chk(tv);
- if (p != NULL && op != NULL && *op == '.')
- {
- int mustfree = FALSE;
- char_u *s = vim_getenv(name, &mustfree);
-
- if (s != NULL)
- {
- p = tofree = concat_str(s, p);
- if (mustfree)
- vim_free(s);
- }
- }
- if (p != NULL)
- {
- vim_setenv(name, p);
- if (STRICMP(name, "HOME") == 0)
- init_homedir();
- else if (didset_vim && STRICMP(name, "VIM") == 0)
- didset_vim = FALSE;
- else if (didset_vimruntime
- && STRICMP(name, "VIMRUNTIME") == 0)
- didset_vimruntime = FALSE;
- arg_end = arg;
- }
- name[len] = c1;
- vim_free(tofree);
- }
- }
- }
-
- /*
- * ":let &option = expr": Set option value.
- * ":let &l:option = expr": Set local option value.
- * ":let &g:option = expr": Set global option value.
- */
- else if (*arg == '&')
- {
- if (is_const)
- {
- emsg(_("E996: Cannot lock an option"));
- return NULL;
- }
- /* Find the end of the name. */
- p = find_option_end(&arg, &opt_flags);
- if (p == NULL || (endchars != NULL
- && vim_strchr(endchars, *skipwhite(p)) == NULL))
- emsg(_(e_letunexp));
- else
- {
- long n;
- int opt_type;
- long numval;
- char_u *stringval = NULL;
- char_u *s;
-
- c1 = *p;
- *p = NUL;
-
- n = (long)tv_get_number(tv);
- s = tv_get_string_chk(tv); /* != NULL if number or string */
- if (s != NULL && op != NULL && *op != '=')
- {
- opt_type = get_option_value(arg, &numval,
- &stringval, opt_flags);
- if ((opt_type == 1 && *op == '.')
- || (opt_type == 0 && *op != '.'))
- {
- semsg(_(e_letwrong), op);
- s = NULL; // don't set the value
- }
- else
- {
- if (opt_type == 1) // number
- {
- switch (*op)
- {
- case '+': n = numval + n; break;
- case '-': n = numval - n; break;
- case '*': n = numval * n; break;
- case '/': n = (long)num_divide(numval, n); break;
- case '%': n = (long)num_modulus(numval, n); break;
- }
- }
- else if (opt_type == 0 && stringval != NULL) // string
- {
- s = concat_str(stringval, s);
- vim_free(stringval);
- stringval = s;
- }
- }
- }
- if (s != NULL)
- {
- set_option_value(arg, n, s, opt_flags);
- arg_end = p;
- }
- *p = c1;
- vim_free(stringval);
- }
- }
-
- /*
- * ":let @r = expr": Set register contents.
- */
- else if (*arg == '@')
- {
- if (is_const)
- {
- emsg(_("E996: Cannot lock a register"));
- return NULL;
- }
- ++arg;
- if (op != NULL && vim_strchr((char_u *)"+-*/%", *op) != NULL)
- semsg(_(e_letwrong), op);
- else if (endchars != NULL
- && vim_strchr(endchars, *skipwhite(arg + 1)) == NULL)
- emsg(_(e_letunexp));
- else
- {
- char_u *ptofree = NULL;
- char_u *s;
-
- p = tv_get_string_chk(tv);
- if (p != NULL && op != NULL && *op == '.')
- {
- s = get_reg_contents(*arg == '@' ? '"' : *arg, GREG_EXPR_SRC);
- if (s != NULL)
- {
- p = ptofree = concat_str(s, p);
- vim_free(s);
- }
- }
- if (p != NULL)
- {
- write_reg_contents(*arg == '@' ? '"' : *arg, p, -1, FALSE);
- arg_end = arg + 1;
- }
- vim_free(ptofree);
- }
- }
-
- /*
- * ":let var = expr": Set internal variable.
- * ":let {expr} = expr": Idem, name made with curly braces
- */
- else if (eval_isnamec1(*arg) || *arg == '{')
- {
- lval_T lv;
-
- p = get_lval(arg, tv, &lv, FALSE, FALSE, 0, FNE_CHECK_START);
- if (p != NULL && lv.ll_name != NULL)
- {
- if (endchars != NULL && vim_strchr(endchars, *skipwhite(p)) == NULL)
- emsg(_(e_letunexp));
- else
- {
- set_var_lval(&lv, p, tv, copy, is_const, op);
- arg_end = p;
- }
- }
- clear_lval(&lv);
- }
-
- else
- semsg(_(e_invarg2), arg);
-
- return arg_end;
- }
-
- /*
* Get an lval: variable, Dict item or List item that can be assigned a value
* to: "name", "na{me}", "name[expr]", "name[expr:expr]", "name[expr][expr]",
* "name.key", "name.key[expr]" etc.
--- 1236,1241 ----
***************
*** 2502,2508 ****
* "op" is NULL, "+" for "+=", "-" for "-=", "*" for "*=", "/" for "/=",
* "%" for "%=", "." for ".=" or "=" for "=".
*/
! static void
set_var_lval(
lval_T *lp,
char_u *endp,
--- 1658,1664 ----
* "op" is NULL, "+" for "+=", "-" for "-=", "*" for "*=", "/" for "/=",
* "%" for "%=", "." for ".=" or "=" for "=".
*/
! void
set_var_lval(
lval_T *lp,
char_u *endp,
***************
*** 3105,3482 ****
xp->xp_pattern = arg;
}
- /*
- * ":unlet[!] var1 ... " command.
- */
- void
- ex_unlet(exarg_T *eap)
- {
- ex_unletlock(eap, eap->arg, 0);
- }
-
- /*
- * ":lockvar" and ":unlockvar" commands
- */
- void
- ex_lockvar(exarg_T *eap)
- {
- char_u *arg = eap->arg;
- int deep = 2;
-
- if (eap->forceit)
- deep = -1;
- else if (vim_isdigit(*arg))
- {
- deep = getdigits(&arg);
- arg = skipwhite(arg);
- }
-
- ex_unletlock(eap, arg, deep);
- }
-
- /*
- * ":unlet", ":lockvar" and ":unlockvar" are quite similar.
- */
- static void
- ex_unletlock(
- exarg_T *eap,
- char_u *argstart,
- int deep)
- {
- char_u *arg = argstart;
- char_u *name_end;
- int error = FALSE;
- lval_T lv;
-
- do
- {
- if (*arg == '$')
- {
- char_u *name = ++arg;
-
- if (get_env_len(&arg) == 0)
- {
- semsg(_(e_invarg2), name - 1);
- return;
- }
- vim_unsetenv(name);
- arg = skipwhite(arg);
- continue;
- }
-
- /* Parse the name and find the end. */
- name_end = get_lval(arg, NULL, &lv, TRUE, eap->skip || error, 0,
- FNE_CHECK_START);
- if (lv.ll_name == NULL)
- error = TRUE; /* error but continue parsing */
- if (name_end == NULL || (!VIM_ISWHITE(*name_end)
- && !ends_excmd(*name_end)))
- {
- if (name_end != NULL)
- {
- emsg_severe = TRUE;
- emsg(_(e_trailing));
- }
- if (!(eap->skip || error))
- clear_lval(&lv);
- break;
- }
-
- if (!error && !eap->skip)
- {
- if (eap->cmdidx == CMD_unlet)
- {
- if (do_unlet_var(&lv, name_end, eap->forceit) == FAIL)
- error = TRUE;
- }
- else
- {
- if (do_lock_var(&lv, name_end, deep,
- eap->cmdidx == CMD_lockvar) == FAIL)
- error = TRUE;
- }
- }
-
- if (!eap->skip)
- clear_lval(&lv);
-
- arg = skipwhite(name_end);
- } while (!ends_excmd(*arg));
-
- eap->nextcmd = check_nextcmd(arg);
- }
-
- static int
- do_unlet_var(
- lval_T *lp,
- char_u *name_end,
- int forceit)
- {
- int ret = OK;
- int cc;
-
- if (lp->ll_tv == NULL)
- {
- cc = *name_end;
- *name_end = NUL;
-
- /* Normal name or expanded name. */
- if (do_unlet(lp->ll_name, forceit) == FAIL)
- ret = FAIL;
- *name_end = cc;
- }
- else if ((lp->ll_list != NULL
- && var_check_lock(lp->ll_list->lv_lock, lp->ll_name, FALSE))
- || (lp->ll_dict != NULL
- && var_check_lock(lp->ll_dict->dv_lock, lp->ll_name, FALSE)))
- return FAIL;
- else if (lp->ll_range)
- {
- listitem_T *li;
- listitem_T *ll_li = lp->ll_li;
- int ll_n1 = lp->ll_n1;
-
- while (ll_li != NULL && (lp->ll_empty2 || lp->ll_n2 >= ll_n1))
- {
- li = ll_li->li_next;
- if (var_check_lock(ll_li->li_tv.v_lock, lp->ll_name, FALSE))
- return FAIL;
- ll_li = li;
- ++ll_n1;
- }
-
- /* Delete a range of List items. */
- while (lp->ll_li != NULL && (lp->ll_empty2 || lp->ll_n2 >= lp->ll_n1))
- {
- li = lp->ll_li->li_next;
- listitem_remove(lp->ll_list, lp->ll_li);
- lp->ll_li = li;
- ++lp->ll_n1;
- }
- }
- else
- {
- if (lp->ll_list != NULL)
- /* unlet a List item. */
- listitem_remove(lp->ll_list, lp->ll_li);
- else
- /* unlet a Dictionary item. */
- dictitem_remove(lp->ll_dict, lp->ll_di);
- }
-
- return ret;
- }
-
- /*
- * "unlet" a variable. Return OK if it existed, FAIL if not.
- * When "forceit" is TRUE don't complain if the variable doesn't exist.
- */
- int
- do_unlet(char_u *name, int forceit)
- {
- hashtab_T *ht;
- hashitem_T *hi;
- char_u *varname;
- dict_T *d;
- dictitem_T *di;
-
- ht = find_var_ht(name, &varname);
- if (ht != NULL && *varname != NUL)
- {
- d = get_current_funccal_dict(ht);
- if (d == NULL)
- {
- if (ht == &globvarht)
- d = &globvardict;
- else if (ht == &compat_hashtab)
- d = &vimvardict;
- else
- {
- di = find_var_in_ht(ht, *name, (char_u *)"", FALSE);
- d = di == NULL ? NULL : di->di_tv.vval.v_dict;
- }
- if (d == NULL)
- {
- internal_error("do_unlet()");
- return FAIL;
- }
- }
- hi = hash_find(ht, varname);
- if (HASHITEM_EMPTY(hi))
- hi = find_hi_in_scoped_ht(name, &ht);
- if (hi != NULL && !HASHITEM_EMPTY(hi))
- {
- di = HI2DI(hi);
- if (var_check_fixed(di->di_flags, name, FALSE)
- || var_check_ro(di->di_flags, name, FALSE)
- || var_check_lock(d->dv_lock, name, FALSE))
- return FAIL;
-
- delete_var(ht, hi);
- return OK;
- }
- }
- if (forceit)
- return OK;
- semsg(_("E108: No such variable: \"%s\""), name);
- return FAIL;
- }
-
- /*
- * Lock or unlock variable indicated by "lp".
- * "deep" is the levels to go (-1 for unlimited);
- * "lock" is TRUE for ":lockvar", FALSE for ":unlockvar".
- */
- static int
- do_lock_var(
- lval_T *lp,
- char_u *name_end,
- int deep,
- int lock)
- {
- int ret = OK;
- int cc;
- dictitem_T *di;
-
- if (deep == 0) /* nothing to do */
- return OK;
-
- if (lp->ll_tv == NULL)
- {
- cc = *name_end;
- *name_end = NUL;
-
- /* Normal name or expanded name. */
- di = find_var(lp->ll_name, NULL, TRUE);
- if (di == NULL)
- ret = FAIL;
- else if ((di->di_flags & DI_FLAGS_FIX)
- && di->di_tv.v_type != VAR_DICT
- && di->di_tv.v_type != VAR_LIST)
- /* For historic reasons this error is not given for a list or dict.
- * E.g., the b: dict could be locked/unlocked. */
- semsg(_("E940: Cannot lock or unlock variable %s"), lp->ll_name);
- else
- {
- if (lock)
- di->di_flags |= DI_FLAGS_LOCK;
- else
- di->di_flags &= ~DI_FLAGS_LOCK;
- item_lock(&di->di_tv, deep, lock);
- }
- *name_end = cc;
- }
- else if (lp->ll_range)
- {
- listitem_T *li = lp->ll_li;
-
- /* (un)lock a range of List items. */
- while (li != NULL && (lp->ll_empty2 || lp->ll_n2 >= lp->ll_n1))
- {
- item_lock(&li->li_tv, deep, lock);
- li = li->li_next;
- ++lp->ll_n1;
- }
- }
- else if (lp->ll_list != NULL)
- /* (un)lock a List item. */
- item_lock(&lp->ll_li->li_tv, deep, lock);
- else
- /* (un)lock a Dictionary item. */
- item_lock(&lp->ll_di->di_tv, deep, lock);
-
- return ret;
- }
-
- /*
- * Lock or unlock an item. "deep" is nr of levels to go.
- */
- static void
- item_lock(typval_T *tv, int deep, int lock)
- {
- static int recurse = 0;
- list_T *l;
- listitem_T *li;
- dict_T *d;
- blob_T *b;
- hashitem_T *hi;
- int todo;
-
- if (recurse >= DICT_MAXNEST)
- {
- emsg(_("E743: variable nested too deep for (un)lock"));
- return;
- }
- if (deep == 0)
- return;
- ++recurse;
-
- /* lock/unlock the item itself */
- if (lock)
- tv->v_lock |= VAR_LOCKED;
- else
- tv->v_lock &= ~VAR_LOCKED;
-
- switch (tv->v_type)
- {
- case VAR_UNKNOWN:
- case VAR_NUMBER:
- case VAR_STRING:
- case VAR_FUNC:
- case VAR_PARTIAL:
- case VAR_FLOAT:
- case VAR_SPECIAL:
- case VAR_JOB:
- case VAR_CHANNEL:
- break;
-
- case VAR_BLOB:
- if ((b = tv->vval.v_blob) != NULL)
- {
- if (lock)
- b->bv_lock |= VAR_LOCKED;
- else
- b->bv_lock &= ~VAR_LOCKED;
- }
- break;
- case VAR_LIST:
- if ((l = tv->vval.v_list) != NULL)
- {
- if (lock)
- l->lv_lock |= VAR_LOCKED;
- else
- l->lv_lock &= ~VAR_LOCKED;
- if (deep < 0 || deep > 1)
- /* recursive: lock/unlock the items the List contains */
- for (li = l->lv_first; li != NULL; li = li->li_next)
- item_lock(&li->li_tv, deep - 1, lock);
- }
- break;
- case VAR_DICT:
- if ((d = tv->vval.v_dict) != NULL)
- {
- if (lock)
- d->dv_lock |= VAR_LOCKED;
- else
- d->dv_lock &= ~VAR_LOCKED;
- if (deep < 0 || deep > 1)
- {
- /* recursive: lock/unlock the items the List contains */
- todo = (int)d->dv_hashtab.ht_used;
- for (hi = d->dv_hashtab.ht_array; todo > 0; ++hi)
- {
- if (!HASHITEM_EMPTY(hi))
- {
- --todo;
- item_lock(&HI2DI(hi)->di_tv, deep - 1, lock);
- }
- }
- }
- }
- }
- --recurse;
- }
-
#if (defined(FEAT_MENU) && defined(FEAT_MULTI_LANG)) || defined(PROTO)
/*
* Delete all "menutrans_" variables.
--- 2261,2266 ----
***************
*** 6871,6877 ****
* Advance "arg" to the first character after the name.
* Return 0 for error.
*/
! static int
get_env_len(char_u **arg)
{
char_u *p;
--- 5655,5661 ----
* Advance "arg" to the first character after the name.
* Return 0 for error.
*/
! int
get_env_len(char_u **arg)
{
char_u *p;
***************
*** 6929,6935 ****
* If the name contains 'magic' {}'s, expand them and return the
* expanded name in an allocated string via 'alias' - caller must free.
*/
! static int
get_name_len(
char_u **arg,
char_u **alias,
--- 5713,5719 ----
* If the name contains 'magic' {}'s, expand them and return the
* expanded name in an allocated string via 'alias' - caller must free.
*/
! int
get_name_len(
char_u **arg,
char_u **alias,
***************
*** 7455,7507 ****
}
/*
- * Get the value of internal variable "name".
- * Return OK or FAIL. If OK is returned "rettv" must be cleared.
- */
- static int
- get_var_tv(
- char_u *name,
- int len, /* length of "name" */
- typval_T *rettv, /* NULL when only checking existence */
- dictitem_T **dip, /* non-NULL when typval's dict item is
needed */
- int verbose, /* may give error message */
- int no_autoload) /* do not use script autoloading */
- {
- int ret = OK;
- typval_T *tv = NULL;
- dictitem_T *v;
- int cc;
-
- /* truncate the name, so that we can use strcmp() */
- cc = name[len];
- name[len] = NUL;
-
- /*
- * Check for user-defined variables.
- */
- v = find_var(name, NULL, no_autoload);
- if (v != NULL)
- {
- tv = &v->di_tv;
- if (dip != NULL)
- *dip = v;
- }
-
- if (tv == NULL)
- {
- if (rettv != NULL && verbose)
- semsg(_(e_undefvar), name);
- ret = FAIL;
- }
- else if (rettv != NULL)
- copy_tv(tv, rettv);
-
- name[len] = cc;
-
- return ret;
- }
-
- /*
* Check if variable "name[len]" is a local variable or an argument.
* If so, "*eval_lavars_used" is set to TRUE.
*/
--- 6239,6244 ----
***************
*** 8177,8198 ****
}
/*
- * Get the string value of a (global/local) variable.
- * Note: see tv_get_string() for how long the pointer remains valid.
- * Returns NULL when it doesn't exist.
- */
- char_u *
- get_var_value(char_u *name)
- {
- dictitem_T *v;
-
- v = find_var(name, NULL, FALSE);
- if (v == NULL)
- return NULL;
- return tv_get_string(&v->di_tv);
- }
-
- /*
* Allocate a new hashtab for a sourced script. It will be used while
* sourcing this script and when executing functions defined in the script.
*/
--- 6914,6919 ----
***************
*** 8259,8623 ****
}
/*
- * Clean up a list of internal variables.
- * Frees all allocated variables and the value they contain.
- * Clears hashtab "ht", does not free it.
- */
- void
- vars_clear(hashtab_T *ht)
- {
- vars_clear_ext(ht, TRUE);
- }
-
- /*
- * Like vars_clear(), but only free the value if "free_val" is TRUE.
- */
- void
- vars_clear_ext(hashtab_T *ht, int free_val)
- {
- int todo;
- hashitem_T *hi;
- dictitem_T *v;
-
- hash_lock(ht);
- todo = (int)ht->ht_used;
- for (hi = ht->ht_array; todo > 0; ++hi)
- {
- if (!HASHITEM_EMPTY(hi))
- {
- --todo;
-
- /* Free the variable. Don't remove it from the hashtab,
- * ht_array might change then. hash_clear() takes care of it
- * later. */
- v = HI2DI(hi);
- if (free_val)
- clear_tv(&v->di_tv);
- if (v->di_flags & DI_FLAGS_ALLOC)
- vim_free(v);
- }
- }
- hash_clear(ht);
- ht->ht_used = 0;
- }
-
- /*
- * Delete a variable from hashtab "ht" at item "hi".
- * Clear the variable value and free the dictitem.
- */
- static void
- delete_var(hashtab_T *ht, hashitem_T *hi)
- {
- dictitem_T *di = HI2DI(hi);
-
- hash_remove(ht, hi);
- clear_tv(&di->di_tv);
- vim_free(di);
- }
-
- /*
- * List the value of one internal variable.
- */
- static void
- list_one_var(dictitem_T *v, char *prefix, int *first)
- {
- char_u *tofree;
- char_u *s;
- char_u numbuf[NUMBUFLEN];
-
- s = echo_string(&v->di_tv, &tofree, numbuf, get_copyID());
- list_one_var_a(prefix, v->di_key, v->di_tv.v_type,
- s == NULL ? (char_u *)"" : s, first);
- vim_free(tofree);
- }
-
- static void
- list_one_var_a(
- char *prefix,
- char_u *name,
- int type,
- char_u *string,
- int *first) /* when TRUE clear rest of screen and set to
FALSE */
- {
- /* don't use msg() or msg_attr() to avoid overwriting "v:statusmsg" */
- msg_start();
- msg_puts(prefix);
- if (name != NULL) /* "a:" vars don't have a name stored */
- msg_puts((char *)name);
- msg_putchar(' ');
- msg_advance(22);
- if (type == VAR_NUMBER)
- msg_putchar('#');
- else if (type == VAR_FUNC || type == VAR_PARTIAL)
- msg_putchar('*');
- else if (type == VAR_LIST)
- {
- msg_putchar('[');
- if (*string == '[')
- ++string;
- }
- else if (type == VAR_DICT)
- {
- msg_putchar('{');
- if (*string == '{')
- ++string;
- }
- else
- msg_putchar(' ');
-
- msg_outtrans(string);
-
- if (type == VAR_FUNC || type == VAR_PARTIAL)
- msg_puts("()");
- if (*first)
- {
- msg_clr_eos();
- *first = FALSE;
- }
- }
-
- /*
- * Set variable "name" to value in "tv".
- * If the variable already exists, the value is updated.
- * Otherwise the variable is created.
- */
- void
- set_var(
- char_u *name,
- typval_T *tv,
- int copy) // make copy of value in "tv"
- {
- set_var_const(name, tv, copy, FALSE);
- }
-
- /*
- * Set variable "name" to value in "tv".
- * If the variable already exists and "is_const" is FALSE the value is
updated.
- * Otherwise the variable is created.
- */
- static void
- set_var_const(
- char_u *name,
- typval_T *tv,
- int copy, // make copy of value in "tv"
- int is_const) // disallow to modify existing variable
- {
- dictitem_T *v;
- char_u *varname;
- hashtab_T *ht;
-
- ht = find_var_ht(name, &varname);
- if (ht == NULL || *varname == NUL)
- {
- semsg(_(e_illvar), name);
- return;
- }
- v = find_var_in_ht(ht, 0, varname, TRUE);
-
- /* Search in parent scope which is possible to reference from lambda */
- if (v == NULL)
- v = find_var_in_scoped_ht(name, TRUE);
-
- if ((tv->v_type == VAR_FUNC || tv->v_type == VAR_PARTIAL)
- && var_check_func_name(name, v == NULL))
- return;
-
- if (v != NULL)
- {
- if (is_const)
- {
- emsg(_(e_cannot_mod));
- return;
- }
-
- /* existing variable, need to clear the value */
- if (var_check_ro(v->di_flags, name, FALSE)
- || var_check_lock(v->di_tv.v_lock, name, FALSE))
- return;
-
- /*
- * Handle setting internal v: variables separately where needed to
- * prevent changing the type.
- */
- if (ht == &vimvarht)
- {
- if (v->di_tv.v_type == VAR_STRING)
- {
- VIM_CLEAR(v->di_tv.vval.v_string);
- if (copy || tv->v_type != VAR_STRING)
- {
- char_u *val = tv_get_string(tv);
-
- // Careful: when assigning to v:errmsg and tv_get_string()
- // causes an error message the variable will alrady be set.
- if (v->di_tv.vval.v_string == NULL)
- v->di_tv.vval.v_string = vim_strsave(val);
- }
- else
- {
- /* Take over the string to avoid an extra alloc/free. */
- v->di_tv.vval.v_string = tv->vval.v_string;
- tv->vval.v_string = NULL;
- }
- return;
- }
- else if (v->di_tv.v_type == VAR_NUMBER)
- {
- v->di_tv.vval.v_number = tv_get_number(tv);
- if (STRCMP(varname, "searchforward") == 0)
- set_search_direction(v->di_tv.vval.v_number ? '/' : '?');
- #ifdef FEAT_SEARCH_EXTRA
- else if (STRCMP(varname, "hlsearch") == 0)
- {
- no_hlsearch = !v->di_tv.vval.v_number;
- redraw_all_later(SOME_VALID);
- }
- #endif
- return;
- }
- else if (v->di_tv.v_type != tv->v_type)
- {
- semsg(_("E963: setting %s to value with wrong type"), name);
- return;
- }
- }
-
- clear_tv(&v->di_tv);
- }
- else /* add a new variable */
- {
- // Can't add "v:" or "a:" variable.
- if (ht == &vimvarht || ht == get_funccal_args_ht())
- {
- semsg(_(e_illvar), name);
- return;
- }
-
- // Make sure the variable name is valid.
- if (!valid_varname(varname))
- return;
-
- v = alloc(sizeof(dictitem_T) + STRLEN(varname));
- if (v == NULL)
- return;
- STRCPY(v->di_key, varname);
- if (hash_add(ht, DI2HIKEY(v)) == FAIL)
- {
- vim_free(v);
- return;
- }
- v->di_flags = DI_FLAGS_ALLOC;
- if (is_const)
- v->di_flags |= DI_FLAGS_LOCK;
- }
-
- if (copy || tv->v_type == VAR_NUMBER || tv->v_type == VAR_FLOAT)
- copy_tv(tv, &v->di_tv);
- else
- {
- v->di_tv = *tv;
- v->di_tv.v_lock = 0;
- init_tv(tv);
- }
-
- if (is_const)
- v->di_tv.v_lock |= VAR_LOCKED;
- }
-
- /*
- * Return TRUE if di_flags "flags" indicates variable "name" is read-only.
- * Also give an error message.
- */
- int
- var_check_ro(int flags, char_u *name, int use_gettext)
- {
- if (flags & DI_FLAGS_RO)
- {
- semsg(_(e_readonlyvar), use_gettext ? (char_u *)_(name) : name);
- return TRUE;
- }
- if ((flags & DI_FLAGS_RO_SBX) && sandbox)
- {
- semsg(_(e_readonlysbx), use_gettext ? (char_u *)_(name) : name);
- return TRUE;
- }
- return FALSE;
- }
-
- /*
- * Return TRUE if di_flags "flags" indicates variable "name" is fixed.
- * Also give an error message.
- */
- int
- var_check_fixed(int flags, char_u *name, int use_gettext)
- {
- if (flags & DI_FLAGS_FIX)
- {
- semsg(_("E795: Cannot delete variable %s"),
- use_gettext ? (char_u *)_(name) : name);
- return TRUE;
- }
- return FALSE;
- }
-
- /*
- * Check if a funcref is assigned to a valid variable name.
- * Return TRUE and give an error if not.
- */
- int
- var_check_func_name(
- char_u *name, /* points to start of variable name */
- int new_var) /* TRUE when creating the variable */
- {
- /* Allow for w: b: s: and t:. */
- if (!(vim_strchr((char_u *)"wbst", name[0]) != NULL && name[1] == ':')
- && !ASCII_ISUPPER((name[0] != NUL && name[1] == ':')
- ? name[2] : name[0]))
- {
- semsg(_("E704: Funcref variable name must start with a capital: %s"),
- name);
- return TRUE;
- }
- /* Don't allow hiding a function. When "v" is not NULL we might be
- * assigning another function to the same var, the type is checked
- * below. */
- if (new_var && function_exists(name, FALSE))
- {
- semsg(_("E705: Variable name conflicts with existing function: %s"),
- name);
- return TRUE;
- }
- return FALSE;
- }
-
- /*
- * Return TRUE if "flags" indicates variable "name" is locked (immutable).
- * Also give an error message, using "name" or _("name") when use_gettext is
- * TRUE.
- */
- int
- var_check_lock(int lock, char_u *name, int use_gettext)
- {
- if (lock & VAR_LOCKED)
- {
- semsg(_("E741: Value is locked: %s"),
- name == NULL ? (char_u *)_("Unknown")
- : use_gettext ? (char_u *)_(name)
- : name);
- return TRUE;
- }
- if (lock & VAR_FIXED)
- {
- semsg(_("E742: Cannot change value of %s"),
- name == NULL ? (char_u *)_("Unknown")
- : use_gettext ? (char_u *)_(name)
- : name);
- return TRUE;
- }
- return FALSE;
- }
-
- /*
* Return TRUE if typeval "tv" and its value are set to be locked (immutable).
* Also give an error message, using "name" or _("name") when use_gettext is
* TRUE.
--- 6980,6985 ----
***************
*** 8649,8673 ****
}
/*
- * Check if a variable name is valid.
- * Return FALSE and give an error if not.
- */
- int
- valid_varname(char_u *varname)
- {
- char_u *p;
-
- for (p = varname; *p != NUL; ++p)
- if (!eval_isnamec1(*p) && (p == varname || !VIM_ISDIGIT(*p))
- && *p != AUTOLOAD_CHAR)
- {
- semsg(_(e_illvar), varname);
- return FALSE;
- }
- return TRUE;
- }
-
- /*
* Copy the values from typval_T "from" to typval_T "to".
* When needed allocates string or increases reference count.
* Does not make a copy of a list, blob or dict but copies the reference!
--- 7011,7016 ----
***************
*** 9250,9403 ****
}
/*
- * getwinvar() and gettabwinvar()
- */
- void
- getwinvar(
- typval_T *argvars,
- typval_T *rettv,
- int off) /* 1 for gettabwinvar() */
- {
- win_T *win;
- char_u *varname;
- dictitem_T *v;
- tabpage_T *tp = NULL;
- int done = FALSE;
- win_T *oldcurwin;
- tabpage_T *oldtabpage;
- int need_switch_win;
-
- if (off == 1)
- tp = find_tabpage((int)tv_get_number_chk(&argvars[0], NULL));
- else
- tp = curtab;
- win = find_win_by_nr(&argvars[off], tp);
- varname = tv_get_string_chk(&argvars[off + 1]);
- ++emsg_off;
-
- rettv->v_type = VAR_STRING;
- rettv->vval.v_string = NULL;
-
- if (win != NULL && varname != NULL)
- {
- /* Set curwin to be our win, temporarily. Also set the tabpage,
- * otherwise the window is not valid. Only do this when needed,
- * autocommands get blocked. */
- need_switch_win = !(tp == curtab && win == curwin);
- if (!need_switch_win
- || switch_win(&oldcurwin, &oldtabpage, win, tp, TRUE) == OK)
- {
- if (*varname == '&')
- {
- if (varname[1] == NUL)
- {
- /* get all window-local options in a dict */
- dict_T *opts = get_winbuf_options(FALSE);
-
- if (opts != NULL)
- {
- rettv_dict_set(rettv, opts);
- done = TRUE;
- }
- }
- else if (get_option_tv(&varname, rettv, 1) == OK)
- /* window-local-option */
- done = TRUE;
- }
- else
- {
- /* Look up the variable. */
- /* Let getwinvar({nr}, "") return the "w:" dictionary. */
- v = find_var_in_ht(&win->w_vars->dv_hashtab, 'w',
- varname, FALSE);
- if (v != NULL)
- {
- copy_tv(&v->di_tv, rettv);
- done = TRUE;
- }
- }
- }
-
- if (need_switch_win)
- /* restore previous notion of curwin */
- restore_win(oldcurwin, oldtabpage, TRUE);
- }
-
- if (!done && argvars[off + 2].v_type != VAR_UNKNOWN)
- /* use the default return value */
- copy_tv(&argvars[off + 2], rettv);
-
- --emsg_off;
- }
-
- /*
- * "setwinvar()" and "settabwinvar()" functions
- */
- void
- setwinvar(typval_T *argvars, typval_T *rettv UNUSED, int off)
- {
- win_T *win;
- win_T *save_curwin;
- tabpage_T *save_curtab;
- int need_switch_win;
- char_u *varname, *winvarname;
- typval_T *varp;
- char_u nbuf[NUMBUFLEN];
- tabpage_T *tp = NULL;
-
- if (check_secure())
- return;
-
- if (off == 1)
- tp = find_tabpage((int)tv_get_number_chk(&argvars[0], NULL));
- else
- tp = curtab;
- win = find_win_by_nr(&argvars[off], tp);
- varname = tv_get_string_chk(&argvars[off + 1]);
- varp = &argvars[off + 2];
-
- if (win != NULL && varname != NULL && varp != NULL)
- {
- need_switch_win = !(tp == curtab && win == curwin);
- if (!need_switch_win
- || switch_win(&save_curwin, &save_curtab, win, tp, TRUE) == OK)
- {
- if (*varname == '&')
- {
- long numval;
- char_u *strval;
- int error = FALSE;
-
- ++varname;
- numval = (long)tv_get_number_chk(varp, &error);
- strval = tv_get_string_buf_chk(varp, nbuf);
- if (!error && strval != NULL)
- set_option_value(varname, numval, strval, OPT_LOCAL);
- }
- else
- {
- winvarname = alloc(STRLEN(varname) + 3);
- if (winvarname != NULL)
- {
- STRCPY(winvarname, "w:");
- STRCPY(winvarname + 2, varname);
- set_var(winvarname, varp, TRUE);
- vim_free(winvarname);
- }
- }
- }
- if (need_switch_win)
- restore_win(save_curwin, save_curtab, TRUE);
- }
- }
-
- /*
* Skip over the name of an option: "&option", "&g:option" or "&l:option".
* "arg" points to the "&" or '+' when called, to "option" when returning.
* Returns NULL when no option name found. Otherwise pointer to the char
* after the option name.
*/
! static char_u *
find_option_end(char_u **arg, int *opt_flags)
{
char_u *p = *arg;
--- 7593,7604 ----
}
/*
* Skip over the name of an option: "&option", "&g:option" or "&l:option".
* "arg" points to the "&" or '+' when called, to "option" when returning.
* Returns NULL when no option name found. Otherwise pointer to the char
* after the option name.
*/
! char_u *
find_option_end(char_u **arg, int *opt_flags)
{
char_u *p = *arg;
***************
*** 9797,9834 ****
return ret;
}
- int
- var_exists(char_u *var)
- {
- char_u *name;
- char_u *tofree;
- typval_T tv;
- int len = 0;
- int n = FALSE;
-
- /* get_name_len() takes care of expanding curly braces */
- name = var;
- len = get_name_len(&var, &tofree, TRUE, FALSE);
- if (len > 0)
- {
- if (tofree != NULL)
- name = tofree;
- n = (get_var_tv(name, len, &tv, NULL, FALSE, TRUE) == OK);
- if (n)
- {
- /* handle d.key, l[idx], f(expr) */
- n = (handle_subscript(&var, &tv, TRUE, FALSE, name, &name) == OK);
- if (n)
- clear_tv(&tv);
- }
- }
- if (*var != NUL)
- n = FALSE;
-
- vim_free(tofree);
- return n;
- }
-
#endif /* FEAT_EVAL */
--- 7998,8003 ----
*** ../vim-8.1.1932/src/evalfunc.c 2019-08-27 21:56:01.699592495 +0200
--- src/evalfunc.c 2019-08-27 22:37:44.277253720 +0200
***************
*** 155,168 ****
static void f_getreg(typval_T *argvars, typval_T *rettv);
static void f_getregtype(typval_T *argvars, typval_T *rettv);
static void f_gettabinfo(typval_T *argvars, typval_T *rettv);
- static void f_gettabvar(typval_T *argvars, typval_T *rettv);
- static void f_gettabwinvar(typval_T *argvars, typval_T *rettv);
static void f_gettagstack(typval_T *argvars, typval_T *rettv);
static void f_getwininfo(typval_T *argvars, typval_T *rettv);
static void f_getwinpos(typval_T *argvars, typval_T *rettv);
static void f_getwinposx(typval_T *argvars, typval_T *rettv);
static void f_getwinposy(typval_T *argvars, typval_T *rettv);
- static void f_getwinvar(typval_T *argvars, typval_T *rettv);
static void f_glob(typval_T *argvars, typval_T *rettv);
static void f_globpath(typval_T *argvars, typval_T *rettv);
static void f_glob2regpat(typval_T *argvars, typval_T *rettv);
--- 155,165 ----
***************
*** 293,302 ****
static void f_setpos(typval_T *argvars, typval_T *rettv);
static void f_setqflist(typval_T *argvars, typval_T *rettv);
static void f_setreg(typval_T *argvars, typval_T *rettv);
- static void f_settabvar(typval_T *argvars, typval_T *rettv);
- static void f_settabwinvar(typval_T *argvars, typval_T *rettv);
static void f_settagstack(typval_T *argvars, typval_T *rettv);
- static void f_setwinvar(typval_T *argvars, typval_T *rettv);
#ifdef FEAT_CRYPT
static void f_sha256(typval_T *argvars, typval_T *rettv);
#endif /* FEAT_CRYPT */
--- 290,296 ----
***************
*** 5315,5372 ****
}
/*
- * "gettabvar()" function
- */
- static void
- f_gettabvar(typval_T *argvars, typval_T *rettv)
- {
- win_T *oldcurwin;
- tabpage_T *tp, *oldtabpage;
- dictitem_T *v;
- char_u *varname;
- int done = FALSE;
-
- rettv->v_type = VAR_STRING;
- rettv->vval.v_string = NULL;
-
- varname = tv_get_string_chk(&argvars[1]);
- tp = find_tabpage((int)tv_get_number_chk(&argvars[0], NULL));
- if (tp != NULL && varname != NULL)
- {
- /* Set tp to be our tabpage, temporarily. Also set the window to the
- * first window in the tabpage, otherwise the window is not valid. */
- if (switch_win(&oldcurwin, &oldtabpage,
- tp == curtab || tp->tp_firstwin == NULL ? firstwin
- : tp->tp_firstwin, tp, TRUE) == OK)
- {
- /* look up the variable */
- /* Let gettabvar({nr}, "") return the "t:" dictionary. */
- v = find_var_in_ht(&tp->tp_vars->dv_hashtab, 't', varname, FALSE);
- if (v != NULL)
- {
- copy_tv(&v->di_tv, rettv);
- done = TRUE;
- }
- }
-
- /* restore previous notion of curwin */
- restore_win(oldcurwin, oldtabpage, TRUE);
- }
-
- if (!done && argvars[2].v_type != VAR_UNKNOWN)
- copy_tv(&argvars[2], rettv);
- }
-
- /*
- * "gettabwinvar()" function
- */
- static void
- f_gettabwinvar(typval_T *argvars, typval_T *rettv)
- {
- getwinvar(argvars, rettv, 1);
- }
-
- /*
* "gettagstack()" function
*/
static void
--- 5309,5314 ----
***************
*** 5625,5639 ****
}
/*
- * "getwinvar()" function
- */
- static void
- f_getwinvar(typval_T *argvars, typval_T *rettv)
- {
- getwinvar(argvars, rettv, 0);
- }
-
- /*
* "glob()" function
*/
static void
--- 5567,5572 ----
***************
*** 10243,10297 ****
}
/*
- * "settabvar()" function
- */
- static void
- f_settabvar(typval_T *argvars, typval_T *rettv)
- {
- tabpage_T *save_curtab;
- tabpage_T *tp;
- char_u *varname, *tabvarname;
- typval_T *varp;
-
- rettv->vval.v_number = 0;
-
- if (check_secure())
- return;
-
- tp = find_tabpage((int)tv_get_number_chk(&argvars[0], NULL));
- varname = tv_get_string_chk(&argvars[1]);
- varp = &argvars[2];
-
- if (varname != NULL && varp != NULL && tp != NULL)
- {
- save_curtab = curtab;
- goto_tabpage_tp(tp, FALSE, FALSE);
-
- tabvarname = alloc(STRLEN(varname) + 3);
- if (tabvarname != NULL)
- {
- STRCPY(tabvarname, "t:");
- STRCPY(tabvarname + 2, varname);
- set_var(tabvarname, varp, TRUE);
- vim_free(tabvarname);
- }
-
- /* Restore current tabpage */
- if (valid_tabpage(save_curtab))
- goto_tabpage_tp(save_curtab, FALSE, FALSE);
- }
- }
-
- /*
- * "settabwinvar()" function
- */
- static void
- f_settabwinvar(typval_T *argvars, typval_T *rettv)
- {
- setwinvar(argvars, rettv, 1);
- }
-
- /*
* "settagstack()" function
*/
static void
--- 10176,10181 ----
***************
*** 10347,10361 ****
rettv->vval.v_number = 0;
}
- /*
- * "setwinvar()" function
- */
- static void
- f_setwinvar(typval_T *argvars, typval_T *rettv)
- {
- setwinvar(argvars, rettv, 0);
- }
-
#ifdef FEAT_CRYPT
/*
* "sha256({string})" function
--- 10231,10236 ----
*** ../vim-8.1.1932/src/evalvars.c 2019-08-27 22:47:03.078089415 +0200
--- src/evalvars.c 2019-08-27 22:39:21.396718069 +0200
***************
*** 0 ****
--- 1,1946 ----
+ /* vi:set ts=8 sts=4 sw=4 noet:
+ *
+ * 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.
+ */
+
+ /*
+ * evalvars.c: functions for dealing with variables
+ */
+
+ #include "vim.h"
+
+ #if defined(FEAT_EVAL) || defined(PROTO)
+
+ static char *e_letunexp = N_("E18: Unexpected characters in :let");
+
+ static void ex_let_const(exarg_T *eap, int is_const);
+ static char_u *skip_var_one(char_u *arg);
+ static void list_glob_vars(int *first);
+ static void list_buf_vars(int *first);
+ static void list_win_vars(int *first);
+ static void list_tab_vars(int *first);
+ static char_u *list_arg_vars(exarg_T *eap, char_u *arg, int *first);
+ static char_u *ex_let_one(char_u *arg, typval_T *tv, int copy, int is_const,
char_u *endchars, char_u *op);
+ static void ex_unletlock(exarg_T *eap, char_u *argstart, int deep);
+ static int do_unlet_var(lval_T *lp, char_u *name_end, int forceit);
+ static int do_lock_var(lval_T *lp, char_u *name_end, int deep, int lock);
+ static void item_lock(typval_T *tv, int deep, int lock);
+ static void list_one_var(dictitem_T *v, char *prefix, int *first);
+ static void list_one_var_a(char *prefix, char_u *name, int type, char_u
*string, int *first);
+
+ /*
+ * Get a list of lines from a HERE document. The here document is a list of
+ * lines surrounded by a marker.
+ * cmd << {marker}
+ * {line1}
+ * {line2}
+ * ....
+ * {marker}
+ *
+ * The {marker} is a string. If the optional 'trim' word is supplied before
the
+ * marker, then the leading indentation before the lines (matching the
+ * indentation in the 'cmd' line) is stripped.
+ * Returns a List with {lines} or NULL.
+ */
+ static list_T *
+ heredoc_get(exarg_T *eap, char_u *cmd)
+ {
+ char_u *theline;
+ char_u *marker;
+ list_T *l;
+ char_u *p;
+ int marker_indent_len = 0;
+ int text_indent_len = 0;
+ char_u *text_indent = NULL;
+
+ if (eap->getline == NULL)
+ {
+ emsg(_("E991: cannot use =<< here"));
+ return NULL;
+ }
+
+ // Check for the optional 'trim' word before the marker
+ cmd = skipwhite(cmd);
+ if (STRNCMP(cmd, "trim", 4) == 0 && (cmd[4] == NUL ||
VIM_ISWHITE(cmd[4])))
+ {
+ cmd = skipwhite(cmd + 4);
+
+ // Trim the indentation from all the lines in the here document.
+ // The amount of indentation trimmed is the same as the indentation of
+ // the first line after the :let command line. To find the end marker
+ // the indent of the :let command line is trimmed.
+ p = *eap->cmdlinep;
+ while (VIM_ISWHITE(*p))
+ {
+ p++;
+ marker_indent_len++;
+ }
+ text_indent_len = -1;
+ }
+
+ // The marker is the next word.
+ if (*cmd != NUL && *cmd != '"')
+ {
+ marker = skipwhite(cmd);
+ p = skiptowhite(marker);
+ if (*skipwhite(p) != NUL && *skipwhite(p) != '"')
+ {
+ emsg(_(e_trailing));
+ return NULL;
+ }
+ *p = NUL;
+ if (vim_islower(*marker))
+ {
+ emsg(_("E221: Marker cannot start with lower case letter"));
+ return NULL;
+ }
+ }
+ else
+ {
+ emsg(_("E172: Missing marker"));
+ return NULL;
+ }
+
+ l = list_alloc();
+ if (l == NULL)
+ return NULL;
+
+ for (;;)
+ {
+ int mi = 0;
+ int ti = 0;
+
+ theline = eap->getline(NUL, eap->cookie, 0, FALSE);
+ if (theline == NULL)
+ {
+ semsg(_("E990: Missing end marker '%s'"), marker);
+ break;
+ }
+
+ // with "trim": skip the indent matching the :let line to find the
+ // marker
+ if (marker_indent_len > 0
+ && STRNCMP(theline, *eap->cmdlinep, marker_indent_len) == 0)
+ mi = marker_indent_len;
+ if (STRCMP(marker, theline + mi) == 0)
+ {
+ vim_free(theline);
+ break;
+ }
+
+ if (text_indent_len == -1 && *theline != NUL)
+ {
+ // set the text indent from the first line.
+ p = theline;
+ text_indent_len = 0;
+ while (VIM_ISWHITE(*p))
+ {
+ p++;
+ text_indent_len++;
+ }
+ text_indent = vim_strnsave(theline, text_indent_len);
+ }
+ // with "trim": skip the indent matching the first line
+ if (text_indent != NULL)
+ for (ti = 0; ti < text_indent_len; ++ti)
+ if (theline[ti] != text_indent[ti])
+ break;
+
+ if (list_append_string(l, theline + ti, -1) == FAIL)
+ break;
+ vim_free(theline);
+ }
+ vim_free(text_indent);
+
+ return l;
+ }
+
+ /*
+ * ":let" list all variable values
+ * ":let var1 var2" list variable values
+ * ":let var = expr" assignment command.
+ * ":let var += expr" assignment command.
+ * ":let var -= expr" assignment command.
+ * ":let var *= expr" assignment command.
+ * ":let var /= expr" assignment command.
+ * ":let var %= expr" assignment command.
+ * ":let var .= expr" assignment command.
+ * ":let var ..= expr" assignment command.
+ * ":let [var1, var2] = expr" unpack list.
+ */
+ void
+ ex_let(exarg_T *eap)
+ {
+ ex_let_const(eap, FALSE);
+ }
+
+ /*
+ * ":const" list all variable values
+ * ":const var1 var2" list variable values
+ * ":const var = expr" assignment command.
+ * ":const [var1, var2] = expr" unpack list.
+ */
+ void
+ ex_const(exarg_T *eap)
+ {
+ ex_let_const(eap, TRUE);
+ }
+
+ static void
+ ex_let_const(exarg_T *eap, int is_const)
+ {
+ char_u *arg = eap->arg;
+ char_u *expr = NULL;
+ typval_T rettv;
+ int i;
+ int var_count = 0;
+ int semicolon = 0;
+ char_u op[2];
+ char_u *argend;
+ int first = TRUE;
+ int concat;
+
+ argend = skip_var_list(arg, &var_count, &semicolon);
+ if (argend == NULL)
+ return;
+ if (argend > arg && argend[-1] == '.') // for var.='str'
+ --argend;
+ expr = skipwhite(argend);
+ concat = expr[0] == '.'
+ && ((expr[1] == '=' && current_sctx.sc_version < 2)
+ || (expr[1] == '.' && expr[2] == '='));
+ if (*expr != '=' && !((vim_strchr((char_u *)"+-*/%", *expr) != NULL
+ && expr[1] == '=') || concat))
+ {
+ // ":let" without "=": list variables
+ if (*arg == '[')
+ emsg(_(e_invarg));
+ else if (expr[0] == '.')
+ emsg(_("E985: .= is not supported with script version 2"));
+ else if (!ends_excmd(*arg))
+ // ":let var1 var2"
+ arg = list_arg_vars(eap, arg, &first);
+ else if (!eap->skip)
+ {
+ // ":let"
+ list_glob_vars(&first);
+ list_buf_vars(&first);
+ list_win_vars(&first);
+ list_tab_vars(&first);
+ list_script_vars(&first);
+ list_func_vars(&first);
+ list_vim_vars(&first);
+ }
+ eap->nextcmd = check_nextcmd(arg);
+ }
+ else if (expr[0] == '=' && expr[1] == '<' && expr[2] == '<')
+ {
+ list_T *l;
+
+ // HERE document
+ l = heredoc_get(eap, expr + 3);
+ if (l != NULL)
+ {
+ rettv_list_set(&rettv, l);
+ op[0] = '=';
+ op[1] = NUL;
+ (void)ex_let_vars(eap->arg, &rettv, FALSE, semicolon, var_count,
+ is_const, op);
+ clear_tv(&rettv);
+ }
+ }
+ else
+ {
+ op[0] = '=';
+ op[1] = NUL;
+ if (*expr != '=')
+ {
+ if (vim_strchr((char_u *)"+-*/%.", *expr) != NULL)
+ {
+ op[0] = *expr; // +=, -=, *=, /=, %= or .=
+ if (expr[0] == '.' && expr[1] == '.') // ..=
+ ++expr;
+ }
+ expr = skipwhite(expr + 2);
+ }
+ else
+ expr = skipwhite(expr + 1);
+
+ if (eap->skip)
+ ++emsg_skip;
+ i = eval0(expr, &rettv, &eap->nextcmd, !eap->skip);
+ if (eap->skip)
+ {
+ if (i != FAIL)
+ clear_tv(&rettv);
+ --emsg_skip;
+ }
+ else if (i != FAIL)
+ {
+ (void)ex_let_vars(eap->arg, &rettv, FALSE, semicolon, var_count,
+ is_const, op);
+ clear_tv(&rettv);
+ }
+ }
+ }
+
+ /*
+ * Assign the typevalue "tv" to the variable or variables at "arg_start".
+ * Handles both "var" with any type and "[var, var; var]" with a list type.
+ * When "op" is not NULL it points to a string with characters that
+ * must appear after the variable(s). Use "+", "-" or "." for add, subtract
+ * or concatenate.
+ * Returns OK or FAIL;
+ */
+ int
+ ex_let_vars(
+ char_u *arg_start,
+ typval_T *tv,
+ int copy, // copy values from "tv", don't move
+ int semicolon, // from skip_var_list()
+ int var_count, // from skip_var_list()
+ int is_const, // lock variables for const
+ char_u *op)
+ {
+ char_u *arg = arg_start;
+ list_T *l;
+ int i;
+ listitem_T *item;
+ typval_T ltv;
+
+ if (*arg != '[')
+ {
+ // ":let var = expr" or ":for var in list"
+ if (ex_let_one(arg, tv, copy, is_const, op, op) == NULL)
+ return FAIL;
+ return OK;
+ }
+
+ // ":let [v1, v2] = list" or ":for [v1, v2] in listlist"
+ if (tv->v_type != VAR_LIST || (l = tv->vval.v_list) == NULL)
+ {
+ emsg(_(e_listreq));
+ return FAIL;
+ }
+
+ i = list_len(l);
+ if (semicolon == 0 && var_count < i)
+ {
+ emsg(_("E687: Less targets than List items"));
+ return FAIL;
+ }
+ if (var_count - semicolon > i)
+ {
+ emsg(_("E688: More targets than List items"));
+ return FAIL;
+ }
+
+ item = l->lv_first;
+ while (*arg != ']')
+ {
+ arg = skipwhite(arg + 1);
+ arg = ex_let_one(arg, &item->li_tv, TRUE, is_const,
+ (char_u *)",;]", op);
+ item = item->li_next;
+ if (arg == NULL)
+ return FAIL;
+
+ arg = skipwhite(arg);
+ if (*arg == ';')
+ {
+ // Put the rest of the list (may be empty) in the var after ';'.
+ // Create a new list for this.
+ l = list_alloc();
+ if (l == NULL)
+ return FAIL;
+ while (item != NULL)
+ {
+ list_append_tv(l, &item->li_tv);
+ item = item->li_next;
+ }
+
+ ltv.v_type = VAR_LIST;
+ ltv.v_lock = 0;
+ ltv.vval.v_list = l;
+ l->lv_refcount = 1;
+
+ arg = ex_let_one(skipwhite(arg + 1), <v, FALSE, is_const,
+ (char_u *)"]", op);
+ clear_tv(<v);
+ if (arg == NULL)
+ return FAIL;
+ break;
+ }
+ else if (*arg != ',' && *arg != ']')
+ {
+ internal_error("ex_let_vars()");
+ return FAIL;
+ }
+ }
+
+ return OK;
+ }
+
+ /*
+ * Skip over assignable variable "var" or list of variables "[var, var]".
+ * Used for ":let varvar = expr" and ":for varvar in expr".
+ * For "[var, var]" increment "*var_count" for each variable.
+ * for "[var, var; var]" set "semicolon".
+ * Return NULL for an error.
+ */
+ char_u *
+ skip_var_list(
+ char_u *arg,
+ int *var_count,
+ int *semicolon)
+ {
+ char_u *p, *s;
+
+ if (*arg == '[')
+ {
+ // "[var, var]": find the matching ']'.
+ p = arg;
+ for (;;)
+ {
+ p = skipwhite(p + 1); // skip whites after '[', ';' or ','
+ s = skip_var_one(p);
+ if (s == p)
+ {
+ semsg(_(e_invarg2), p);
+ return NULL;
+ }
+ ++*var_count;
+
+ p = skipwhite(s);
+ if (*p == ']')
+ break;
+ else if (*p == ';')
+ {
+ if (*semicolon == 1)
+ {
+ emsg(_("Double ; in list of variables"));
+ return NULL;
+ }
+ *semicolon = 1;
+ }
+ else if (*p != ',')
+ {
+ semsg(_(e_invarg2), p);
+ return NULL;
+ }
+ }
+ return p + 1;
+ }
+ else
+ return skip_var_one(arg);
+ }
+
+ /*
+ * Skip one (assignable) variable name, including @r, $VAR, &option, d.key,
+ * l[idx].
+ */
+ static char_u *
+ skip_var_one(char_u *arg)
+ {
+ if (*arg == '@' && arg[1] != NUL)
+ return arg + 2;
+ return find_name_end(*arg == '$' || *arg == '&' ? arg + 1 : arg,
+ NULL, NULL, FNE_INCL_BR | FNE_CHECK_START);
+ }
+
+ /*
+ * List variables for hashtab "ht" with prefix "prefix".
+ * If "empty" is TRUE also list NULL strings as empty strings.
+ */
+ void
+ list_hashtable_vars(
+ hashtab_T *ht,
+ char *prefix,
+ int empty,
+ int *first)
+ {
+ hashitem_T *hi;
+ dictitem_T *di;
+ int todo;
+ char_u buf[IOSIZE];
+
+ todo = (int)ht->ht_used;
+ for (hi = ht->ht_array; todo > 0 && !got_int; ++hi)
+ {
+ if (!HASHITEM_EMPTY(hi))
+ {
+ --todo;
+ di = HI2DI(hi);
+
+ // apply :filter /pat/ to variable name
+ vim_strncpy((char_u *)buf, (char_u *)prefix, IOSIZE - 1);
+ vim_strcat((char_u *)buf, di->di_key, IOSIZE);
+ if (message_filtered(buf))
+ continue;
+
+ if (empty || di->di_tv.v_type != VAR_STRING
+ || di->di_tv.vval.v_string != NULL)
+ list_one_var(di, prefix, first);
+ }
+ }
+ }
+
+ /*
+ * List global variables.
+ */
+ static void
+ list_glob_vars(int *first)
+ {
+ list_hashtable_vars(&globvarht, "", TRUE, first);
+ }
+
+ /*
+ * List buffer variables.
+ */
+ static void
+ list_buf_vars(int *first)
+ {
+ list_hashtable_vars(&curbuf->b_vars->dv_hashtab, "b:", TRUE, first);
+ }
+
+ /*
+ * List window variables.
+ */
+ static void
+ list_win_vars(int *first)
+ {
+ list_hashtable_vars(&curwin->w_vars->dv_hashtab, "w:", TRUE, first);
+ }
+
+ /*
+ * List tab page variables.
+ */
+ static void
+ list_tab_vars(int *first)
+ {
+ list_hashtable_vars(&curtab->tp_vars->dv_hashtab, "t:", TRUE, first);
+ }
+
+ /*
+ * List variables in "arg".
+ */
+ static char_u *
+ list_arg_vars(exarg_T *eap, char_u *arg, int *first)
+ {
+ int error = FALSE;
+ int len;
+ char_u *name;
+ char_u *name_start;
+ char_u *arg_subsc;
+ char_u *tofree;
+ typval_T tv;
+
+ while (!ends_excmd(*arg) && !got_int)
+ {
+ if (error || eap->skip)
+ {
+ arg = find_name_end(arg, NULL, NULL, FNE_INCL_BR | FNE_CHECK_START);
+ if (!VIM_ISWHITE(*arg) && !ends_excmd(*arg))
+ {
+ emsg_severe = TRUE;
+ emsg(_(e_trailing));
+ break;
+ }
+ }
+ else
+ {
+ // get_name_len() takes care of expanding curly braces
+ name_start = name = arg;
+ len = get_name_len(&arg, &tofree, TRUE, TRUE);
+ if (len <= 0)
+ {
+ // This is mainly to keep test 49 working: when expanding
+ // curly braces fails overrule the exception error message.
+ if (len < 0 && !aborting())
+ {
+ emsg_severe = TRUE;
+ semsg(_(e_invarg2), arg);
+ break;
+ }
+ error = TRUE;
+ }
+ else
+ {
+ if (tofree != NULL)
+ name = tofree;
+ if (get_var_tv(name, len, &tv, NULL, TRUE, FALSE) == FAIL)
+ error = TRUE;
+ else
+ {
+ // handle d.key, l[idx], f(expr)
+ arg_subsc = arg;
+ if (handle_subscript(&arg, &tv, TRUE, TRUE,
+ name, &name) == FAIL)
+ error = TRUE;
+ else
+ {
+ if (arg == arg_subsc && len == 2 && name[1] == ':')
+ {
+ switch (*name)
+ {
+ case 'g': list_glob_vars(first); break;
+ case 'b': list_buf_vars(first); break;
+ case 'w': list_win_vars(first); break;
+ case 't': list_tab_vars(first); break;
+ case 'v': list_vim_vars(first); break;
+ case 's': list_script_vars(first); break;
+ case 'l': list_func_vars(first); break;
+ default:
+ semsg(_("E738: Can't list variables
for %s"), name);
+ }
+ }
+ else
+ {
+ char_u numbuf[NUMBUFLEN];
+ char_u *tf;
+ int c;
+ char_u *s;
+
+ s = echo_string(&tv, &tf, numbuf, 0);
+ c = *arg;
+ *arg = NUL;
+ list_one_var_a("",
+ arg == arg_subsc ? name : name_start,
+ tv.v_type,
+ s == NULL ? (char_u *)"" : s,
+ first);
+ *arg = c;
+ vim_free(tf);
+ }
+ clear_tv(&tv);
+ }
+ }
+ }
+
+ vim_free(tofree);
+ }
+
+ arg = skipwhite(arg);
+ }
+
+ return arg;
+ }
+
+ /*
+ * Set one item of ":let var = expr" or ":let [v1, v2] = list" to its value.
+ * Returns a pointer to the char just after the var name.
+ * Returns NULL if there is an error.
+ */
+ static char_u *
+ ex_let_one(
+ char_u *arg, // points to variable name
+ typval_T *tv, // value to assign to variable
+ int copy, // copy value from "tv"
+ int is_const, // lock variable for const
+ char_u *endchars, // valid chars after variable name or NULL
+ char_u *op) // "+", "-", "." or NULL
+ {
+ int c1;
+ char_u *name;
+ char_u *p;
+ char_u *arg_end = NULL;
+ int len;
+ int opt_flags;
+ char_u *tofree = NULL;
+
+ // ":let $VAR = expr": Set environment variable.
+ if (*arg == '$')
+ {
+ if (is_const)
+ {
+ emsg(_("E996: Cannot lock an environment variable"));
+ return NULL;
+ }
+ // Find the end of the name.
+ ++arg;
+ name = arg;
+ len = get_env_len(&arg);
+ if (len == 0)
+ semsg(_(e_invarg2), name - 1);
+ else
+ {
+ if (op != NULL && vim_strchr((char_u *)"+-*/%", *op) != NULL)
+ semsg(_(e_letwrong), op);
+ else if (endchars != NULL
+ && vim_strchr(endchars, *skipwhite(arg)) == NULL)
+ emsg(_(e_letunexp));
+ else if (!check_secure())
+ {
+ c1 = name[len];
+ name[len] = NUL;
+ p = tv_get_string_chk(tv);
+ if (p != NULL && op != NULL && *op == '.')
+ {
+ int mustfree = FALSE;
+ char_u *s = vim_getenv(name, &mustfree);
+
+ if (s != NULL)
+ {
+ p = tofree = concat_str(s, p);
+ if (mustfree)
+ vim_free(s);
+ }
+ }
+ if (p != NULL)
+ {
+ vim_setenv(name, p);
+ if (STRICMP(name, "HOME") == 0)
+ init_homedir();
+ else if (didset_vim && STRICMP(name, "VIM") == 0)
+ didset_vim = FALSE;
+ else if (didset_vimruntime
+ && STRICMP(name, "VIMRUNTIME") == 0)
+ didset_vimruntime = FALSE;
+ arg_end = arg;
+ }
+ name[len] = c1;
+ vim_free(tofree);
+ }
+ }
+ }
+
+ // ":let &option = expr": Set option value.
+ // ":let &l:option = expr": Set local option value.
+ // ":let &g:option = expr": Set global option value.
+ else if (*arg == '&')
+ {
+ if (is_const)
+ {
+ emsg(_("E996: Cannot lock an option"));
+ return NULL;
+ }
+ // Find the end of the name.
+ p = find_option_end(&arg, &opt_flags);
+ if (p == NULL || (endchars != NULL
+ && vim_strchr(endchars, *skipwhite(p)) == NULL))
+ emsg(_(e_letunexp));
+ else
+ {
+ long n;
+ int opt_type;
+ long numval;
+ char_u *stringval = NULL;
+ char_u *s;
+
+ c1 = *p;
+ *p = NUL;
+
+ n = (long)tv_get_number(tv);
+ s = tv_get_string_chk(tv); // != NULL if number or string
+ if (s != NULL && op != NULL && *op != '=')
+ {
+ opt_type = get_option_value(arg, &numval,
+ &stringval, opt_flags);
+ if ((opt_type == 1 && *op == '.')
+ || (opt_type == 0 && *op != '.'))
+ {
+ semsg(_(e_letwrong), op);
+ s = NULL; // don't set the value
+ }
+ else
+ {
+ if (opt_type == 1) // number
+ {
+ switch (*op)
+ {
+ case '+': n = numval + n; break;
+ case '-': n = numval - n; break;
+ case '*': n = numval * n; break;
+ case '/': n = (long)num_divide(numval, n); break;
+ case '%': n = (long)num_modulus(numval, n); break;
+ }
+ }
+ else if (opt_type == 0 && stringval != NULL) // string
+ {
+ s = concat_str(stringval, s);
+ vim_free(stringval);
+ stringval = s;
+ }
+ }
+ }
+ if (s != NULL)
+ {
+ set_option_value(arg, n, s, opt_flags);
+ arg_end = p;
+ }
+ *p = c1;
+ vim_free(stringval);
+ }
+ }
+
+ // ":let @r = expr": Set register contents.
+ else if (*arg == '@')
+ {
+ if (is_const)
+ {
+ emsg(_("E996: Cannot lock a register"));
+ return NULL;
+ }
+ ++arg;
+ if (op != NULL && vim_strchr((char_u *)"+-*/%", *op) != NULL)
+ semsg(_(e_letwrong), op);
+ else if (endchars != NULL
+ && vim_strchr(endchars, *skipwhite(arg + 1)) == NULL)
+ emsg(_(e_letunexp));
+ else
+ {
+ char_u *ptofree = NULL;
+ char_u *s;
+
+ p = tv_get_string_chk(tv);
+ if (p != NULL && op != NULL && *op == '.')
+ {
+ s = get_reg_contents(*arg == '@' ? '"' : *arg, GREG_EXPR_SRC);
+ if (s != NULL)
+ {
+ p = ptofree = concat_str(s, p);
+ vim_free(s);
+ }
+ }
+ if (p != NULL)
+ {
+ write_reg_contents(*arg == '@' ? '"' : *arg, p, -1, FALSE);
+ arg_end = arg + 1;
+ }
+ vim_free(ptofree);
+ }
+ }
+
+ // ":let var = expr": Set internal variable.
+ // ":let {expr} = expr": Idem, name made with curly braces
+ else if (eval_isnamec1(*arg) || *arg == '{')
+ {
+ lval_T lv;
+
+ p = get_lval(arg, tv, &lv, FALSE, FALSE, 0, FNE_CHECK_START);
+ if (p != NULL && lv.ll_name != NULL)
+ {
+ if (endchars != NULL && vim_strchr(endchars, *skipwhite(p)) == NULL)
+ emsg(_(e_letunexp));
+ else
+ {
+ set_var_lval(&lv, p, tv, copy, is_const, op);
+ arg_end = p;
+ }
+ }
+ clear_lval(&lv);
+ }
+
+ else
+ semsg(_(e_invarg2), arg);
+
+ return arg_end;
+ }
+
+ /*
+ * ":unlet[!] var1 ... " command.
+ */
+ void
+ ex_unlet(exarg_T *eap)
+ {
+ ex_unletlock(eap, eap->arg, 0);
+ }
+
+ /*
+ * ":lockvar" and ":unlockvar" commands
+ */
+ void
+ ex_lockvar(exarg_T *eap)
+ {
+ char_u *arg = eap->arg;
+ int deep = 2;
+
+ if (eap->forceit)
+ deep = -1;
+ else if (vim_isdigit(*arg))
+ {
+ deep = getdigits(&arg);
+ arg = skipwhite(arg);
+ }
+
+ ex_unletlock(eap, arg, deep);
+ }
+
+ /*
+ * ":unlet", ":lockvar" and ":unlockvar" are quite similar.
+ */
+ static void
+ ex_unletlock(
+ exarg_T *eap,
+ char_u *argstart,
+ int deep)
+ {
+ char_u *arg = argstart;
+ char_u *name_end;
+ int error = FALSE;
+ lval_T lv;
+
+ do
+ {
+ if (*arg == '$')
+ {
+ char_u *name = ++arg;
+
+ if (get_env_len(&arg) == 0)
+ {
+ semsg(_(e_invarg2), name - 1);
+ return;
+ }
+ vim_unsetenv(name);
+ arg = skipwhite(arg);
+ continue;
+ }
+
+ // Parse the name and find the end.
+ name_end = get_lval(arg, NULL, &lv, TRUE, eap->skip || error, 0,
+ FNE_CHECK_START);
+ if (lv.ll_name == NULL)
+ error = TRUE; // error but continue parsing
+ if (name_end == NULL || (!VIM_ISWHITE(*name_end)
+ && !ends_excmd(*name_end)))
+ {
+ if (name_end != NULL)
+ {
+ emsg_severe = TRUE;
+ emsg(_(e_trailing));
+ }
+ if (!(eap->skip || error))
+ clear_lval(&lv);
+ break;
+ }
+
+ if (!error && !eap->skip)
+ {
+ if (eap->cmdidx == CMD_unlet)
+ {
+ if (do_unlet_var(&lv, name_end, eap->forceit) == FAIL)
+ error = TRUE;
+ }
+ else
+ {
+ if (do_lock_var(&lv, name_end, deep,
+ eap->cmdidx == CMD_lockvar) == FAIL)
+ error = TRUE;
+ }
+ }
+
+ if (!eap->skip)
+ clear_lval(&lv);
+
+ arg = skipwhite(name_end);
+ } while (!ends_excmd(*arg));
+
+ eap->nextcmd = check_nextcmd(arg);
+ }
+
+ static int
+ do_unlet_var(
+ lval_T *lp,
+ char_u *name_end,
+ int forceit)
+ {
+ int ret = OK;
+ int cc;
+
+ if (lp->ll_tv == NULL)
+ {
+ cc = *name_end;
+ *name_end = NUL;
+
+ // Normal name or expanded name.
+ if (do_unlet(lp->ll_name, forceit) == FAIL)
+ ret = FAIL;
+ *name_end = cc;
+ }
+ else if ((lp->ll_list != NULL
+ && var_check_lock(lp->ll_list->lv_lock, lp->ll_name, FALSE))
+ || (lp->ll_dict != NULL
+ && var_check_lock(lp->ll_dict->dv_lock, lp->ll_name, FALSE)))
+ return FAIL;
+ else if (lp->ll_range)
+ {
+ listitem_T *li;
+ listitem_T *ll_li = lp->ll_li;
+ int ll_n1 = lp->ll_n1;
+
+ while (ll_li != NULL && (lp->ll_empty2 || lp->ll_n2 >= ll_n1))
+ {
+ li = ll_li->li_next;
+ if (var_check_lock(ll_li->li_tv.v_lock, lp->ll_name, FALSE))
+ return FAIL;
+ ll_li = li;
+ ++ll_n1;
+ }
+
+ // Delete a range of List items.
+ while (lp->ll_li != NULL && (lp->ll_empty2 || lp->ll_n2 >= lp->ll_n1))
+ {
+ li = lp->ll_li->li_next;
+ listitem_remove(lp->ll_list, lp->ll_li);
+ lp->ll_li = li;
+ ++lp->ll_n1;
+ }
+ }
+ else
+ {
+ if (lp->ll_list != NULL)
+ // unlet a List item.
+ listitem_remove(lp->ll_list, lp->ll_li);
+ else
+ // unlet a Dictionary item.
+ dictitem_remove(lp->ll_dict, lp->ll_di);
+ }
+
+ return ret;
+ }
+
+ /*
+ * "unlet" a variable. Return OK if it existed, FAIL if not.
+ * When "forceit" is TRUE don't complain if the variable doesn't exist.
+ */
+ int
+ do_unlet(char_u *name, int forceit)
+ {
+ hashtab_T *ht;
+ hashitem_T *hi;
+ char_u *varname;
+ dict_T *d;
+ dictitem_T *di;
+
+ ht = find_var_ht(name, &varname);
+ if (ht != NULL && *varname != NUL)
+ {
+ d = get_current_funccal_dict(ht);
+ if (d == NULL)
+ {
+ if (ht == &globvarht)
+ d = &globvardict;
+ else if (is_compatht(ht))
+ d = &vimvardict;
+ else
+ {
+ di = find_var_in_ht(ht, *name, (char_u *)"", FALSE);
+ d = di == NULL ? NULL : di->di_tv.vval.v_dict;
+ }
+ if (d == NULL)
+ {
+ internal_error("do_unlet()");
+ return FAIL;
+ }
+ }
+ hi = hash_find(ht, varname);
+ if (HASHITEM_EMPTY(hi))
+ hi = find_hi_in_scoped_ht(name, &ht);
+ if (hi != NULL && !HASHITEM_EMPTY(hi))
+ {
+ di = HI2DI(hi);
+ if (var_check_fixed(di->di_flags, name, FALSE)
+ || var_check_ro(di->di_flags, name, FALSE)
+ || var_check_lock(d->dv_lock, name, FALSE))
+ return FAIL;
+
+ delete_var(ht, hi);
+ return OK;
+ }
+ }
+ if (forceit)
+ return OK;
+ semsg(_("E108: No such variable: \"%s\""), name);
+ return FAIL;
+ }
+
+ /*
+ * Lock or unlock variable indicated by "lp".
+ * "deep" is the levels to go (-1 for unlimited);
+ * "lock" is TRUE for ":lockvar", FALSE for ":unlockvar".
+ */
+ static int
+ do_lock_var(
+ lval_T *lp,
+ char_u *name_end,
+ int deep,
+ int lock)
+ {
+ int ret = OK;
+ int cc;
+ dictitem_T *di;
+
+ if (deep == 0) // nothing to do
+ return OK;
+
+ if (lp->ll_tv == NULL)
+ {
+ cc = *name_end;
+ *name_end = NUL;
+
+ // Normal name or expanded name.
+ di = find_var(lp->ll_name, NULL, TRUE);
+ if (di == NULL)
+ ret = FAIL;
+ else if ((di->di_flags & DI_FLAGS_FIX)
+ && di->di_tv.v_type != VAR_DICT
+ && di->di_tv.v_type != VAR_LIST)
+ // For historic reasons this error is not given for a list or dict.
+ // E.g., the b: dict could be locked/unlocked.
+ semsg(_("E940: Cannot lock or unlock variable %s"), lp->ll_name);
+ else
+ {
+ if (lock)
+ di->di_flags |= DI_FLAGS_LOCK;
+ else
+ di->di_flags &= ~DI_FLAGS_LOCK;
+ item_lock(&di->di_tv, deep, lock);
+ }
+ *name_end = cc;
+ }
+ else if (lp->ll_range)
+ {
+ listitem_T *li = lp->ll_li;
+
+ // (un)lock a range of List items.
+ while (li != NULL && (lp->ll_empty2 || lp->ll_n2 >= lp->ll_n1))
+ {
+ item_lock(&li->li_tv, deep, lock);
+ li = li->li_next;
+ ++lp->ll_n1;
+ }
+ }
+ else if (lp->ll_list != NULL)
+ // (un)lock a List item.
+ item_lock(&lp->ll_li->li_tv, deep, lock);
+ else
+ // (un)lock a Dictionary item.
+ item_lock(&lp->ll_di->di_tv, deep, lock);
+
+ return ret;
+ }
+
+ /*
+ * Lock or unlock an item. "deep" is nr of levels to go.
+ */
+ static void
+ item_lock(typval_T *tv, int deep, int lock)
+ {
+ static int recurse = 0;
+ list_T *l;
+ listitem_T *li;
+ dict_T *d;
+ blob_T *b;
+ hashitem_T *hi;
+ int todo;
+
+ if (recurse >= DICT_MAXNEST)
+ {
+ emsg(_("E743: variable nested too deep for (un)lock"));
+ return;
+ }
+ if (deep == 0)
+ return;
+ ++recurse;
+
+ // lock/unlock the item itself
+ if (lock)
+ tv->v_lock |= VAR_LOCKED;
+ else
+ tv->v_lock &= ~VAR_LOCKED;
+
+ switch (tv->v_type)
+ {
+ case VAR_UNKNOWN:
+ case VAR_NUMBER:
+ case VAR_STRING:
+ case VAR_FUNC:
+ case VAR_PARTIAL:
+ case VAR_FLOAT:
+ case VAR_SPECIAL:
+ case VAR_JOB:
+ case VAR_CHANNEL:
+ break;
+
+ case VAR_BLOB:
+ if ((b = tv->vval.v_blob) != NULL)
+ {
+ if (lock)
+ b->bv_lock |= VAR_LOCKED;
+ else
+ b->bv_lock &= ~VAR_LOCKED;
+ }
+ break;
+ case VAR_LIST:
+ if ((l = tv->vval.v_list) != NULL)
+ {
+ if (lock)
+ l->lv_lock |= VAR_LOCKED;
+ else
+ l->lv_lock &= ~VAR_LOCKED;
+ if (deep < 0 || deep > 1)
+ // recursive: lock/unlock the items the List contains
+ for (li = l->lv_first; li != NULL; li = li->li_next)
+ item_lock(&li->li_tv, deep - 1, lock);
+ }
+ break;
+ case VAR_DICT:
+ if ((d = tv->vval.v_dict) != NULL)
+ {
+ if (lock)
+ d->dv_lock |= VAR_LOCKED;
+ else
+ d->dv_lock &= ~VAR_LOCKED;
+ if (deep < 0 || deep > 1)
+ {
+ // recursive: lock/unlock the items the List contains
+ todo = (int)d->dv_hashtab.ht_used;
+ for (hi = d->dv_hashtab.ht_array; todo > 0; ++hi)
+ {
+ if (!HASHITEM_EMPTY(hi))
+ {
+ --todo;
+ item_lock(&HI2DI(hi)->di_tv, deep - 1, lock);
+ }
+ }
+ }
+ }
+ }
+ --recurse;
+ }
+
+ /*
+ * Get the value of internal variable "name".
+ * Return OK or FAIL. If OK is returned "rettv" must be cleared.
+ */
+ int
+ get_var_tv(
+ char_u *name,
+ int len, // length of "name"
+ typval_T *rettv, // NULL when only checking existence
+ dictitem_T **dip, // non-NULL when typval's dict item is
needed
+ int verbose, // may give error message
+ int no_autoload) // do not use script autoloading
+ {
+ int ret = OK;
+ typval_T *tv = NULL;
+ dictitem_T *v;
+ int cc;
+
+ // truncate the name, so that we can use strcmp()
+ cc = name[len];
+ name[len] = NUL;
+
+ // Check for user-defined variables.
+ v = find_var(name, NULL, no_autoload);
+ if (v != NULL)
+ {
+ tv = &v->di_tv;
+ if (dip != NULL)
+ *dip = v;
+ }
+
+ if (tv == NULL)
+ {
+ if (rettv != NULL && verbose)
+ semsg(_(e_undefvar), name);
+ ret = FAIL;
+ }
+ else if (rettv != NULL)
+ copy_tv(tv, rettv);
+
+ name[len] = cc;
+
+ return ret;
+ }
+
+ /*
+ * Get the string value of a (global/local) variable.
+ * Note: see tv_get_string() for how long the pointer remains valid.
+ * Returns NULL when it doesn't exist.
+ */
+ char_u *
+ get_var_value(char_u *name)
+ {
+ dictitem_T *v;
+
+ v = find_var(name, NULL, FALSE);
+ if (v == NULL)
+ return NULL;
+ return tv_get_string(&v->di_tv);
+ }
+
+ /*
+ * Clean up a list of internal variables.
+ * Frees all allocated variables and the value they contain.
+ * Clears hashtab "ht", does not free it.
+ */
+ void
+ vars_clear(hashtab_T *ht)
+ {
+ vars_clear_ext(ht, TRUE);
+ }
+
+ /*
+ * Like vars_clear(), but only free the value if "free_val" is TRUE.
+ */
+ void
+ vars_clear_ext(hashtab_T *ht, int free_val)
+ {
+ int todo;
+ hashitem_T *hi;
+ dictitem_T *v;
+
+ hash_lock(ht);
+ todo = (int)ht->ht_used;
+ for (hi = ht->ht_array; todo > 0; ++hi)
+ {
+ if (!HASHITEM_EMPTY(hi))
+ {
+ --todo;
+
+ // Free the variable. Don't remove it from the hashtab,
+ // ht_array might change then. hash_clear() takes care of it
+ // later.
+ v = HI2DI(hi);
+ if (free_val)
+ clear_tv(&v->di_tv);
+ if (v->di_flags & DI_FLAGS_ALLOC)
+ vim_free(v);
+ }
+ }
+ hash_clear(ht);
+ ht->ht_used = 0;
+ }
+
+ /*
+ * Delete a variable from hashtab "ht" at item "hi".
+ * Clear the variable value and free the dictitem.
+ */
+ void
+ delete_var(hashtab_T *ht, hashitem_T *hi)
+ {
+ dictitem_T *di = HI2DI(hi);
+
+ hash_remove(ht, hi);
+ clear_tv(&di->di_tv);
+ vim_free(di);
+ }
+
+ /*
+ * List the value of one internal variable.
+ */
+ static void
+ list_one_var(dictitem_T *v, char *prefix, int *first)
+ {
+ char_u *tofree;
+ char_u *s;
+ char_u numbuf[NUMBUFLEN];
+
+ s = echo_string(&v->di_tv, &tofree, numbuf, get_copyID());
+ list_one_var_a(prefix, v->di_key, v->di_tv.v_type,
+ s == NULL ? (char_u *)"" : s, first);
+ vim_free(tofree);
+ }
+
+ static void
+ list_one_var_a(
+ char *prefix,
+ char_u *name,
+ int type,
+ char_u *string,
+ int *first) // when TRUE clear rest of screen and set to
FALSE
+ {
+ // don't use msg() or msg_attr() to avoid overwriting "v:statusmsg"
+ msg_start();
+ msg_puts(prefix);
+ if (name != NULL) // "a:" vars don't have a name stored
+ msg_puts((char *)name);
+ msg_putchar(' ');
+ msg_advance(22);
+ if (type == VAR_NUMBER)
+ msg_putchar('#');
+ else if (type == VAR_FUNC || type == VAR_PARTIAL)
+ msg_putchar('*');
+ else if (type == VAR_LIST)
+ {
+ msg_putchar('[');
+ if (*string == '[')
+ ++string;
+ }
+ else if (type == VAR_DICT)
+ {
+ msg_putchar('{');
+ if (*string == '{')
+ ++string;
+ }
+ else
+ msg_putchar(' ');
+
+ msg_outtrans(string);
+
+ if (type == VAR_FUNC || type == VAR_PARTIAL)
+ msg_puts("()");
+ if (*first)
+ {
+ msg_clr_eos();
+ *first = FALSE;
+ }
+ }
+
+ /*
+ * Set variable "name" to value in "tv".
+ * If the variable already exists, the value is updated.
+ * Otherwise the variable is created.
+ */
+ void
+ set_var(
+ char_u *name,
+ typval_T *tv,
+ int copy) // make copy of value in "tv"
+ {
+ set_var_const(name, tv, copy, FALSE);
+ }
+
+ /*
+ * Set variable "name" to value in "tv".
+ * If the variable already exists and "is_const" is FALSE the value is
updated.
+ * Otherwise the variable is created.
+ */
+ void
+ set_var_const(
+ char_u *name,
+ typval_T *tv,
+ int copy, // make copy of value in "tv"
+ int is_const) // disallow to modify existing variable
+ {
+ dictitem_T *v;
+ char_u *varname;
+ hashtab_T *ht;
+
+ ht = find_var_ht(name, &varname);
+ if (ht == NULL || *varname == NUL)
+ {
+ semsg(_(e_illvar), name);
+ return;
+ }
+ v = find_var_in_ht(ht, 0, varname, TRUE);
+
+ // Search in parent scope which is possible to reference from lambda
+ if (v == NULL)
+ v = find_var_in_scoped_ht(name, TRUE);
+
+ if ((tv->v_type == VAR_FUNC || tv->v_type == VAR_PARTIAL)
+ && var_check_func_name(name, v == NULL))
+ return;
+
+ if (v != NULL)
+ {
+ if (is_const)
+ {
+ emsg(_(e_cannot_mod));
+ return;
+ }
+
+ // existing variable, need to clear the value
+ if (var_check_ro(v->di_flags, name, FALSE)
+ || var_check_lock(v->di_tv.v_lock, name, FALSE))
+ return;
+
+ // Handle setting internal v: variables separately where needed to
+ // prevent changing the type.
+ if (is_vimvarht(ht))
+ {
+ if (v->di_tv.v_type == VAR_STRING)
+ {
+ VIM_CLEAR(v->di_tv.vval.v_string);
+ if (copy || tv->v_type != VAR_STRING)
+ {
+ char_u *val = tv_get_string(tv);
+
+ // Careful: when assigning to v:errmsg and tv_get_string()
+ // causes an error message the variable will alrady be set.
+ if (v->di_tv.vval.v_string == NULL)
+ v->di_tv.vval.v_string = vim_strsave(val);
+ }
+ else
+ {
+ // Take over the string to avoid an extra alloc/free.
+ v->di_tv.vval.v_string = tv->vval.v_string;
+ tv->vval.v_string = NULL;
+ }
+ return;
+ }
+ else if (v->di_tv.v_type == VAR_NUMBER)
+ {
+ v->di_tv.vval.v_number = tv_get_number(tv);
+ if (STRCMP(varname, "searchforward") == 0)
+ set_search_direction(v->di_tv.vval.v_number ? '/' : '?');
+ #ifdef FEAT_SEARCH_EXTRA
+ else if (STRCMP(varname, "hlsearch") == 0)
+ {
+ no_hlsearch = !v->di_tv.vval.v_number;
+ redraw_all_later(SOME_VALID);
+ }
+ #endif
+ return;
+ }
+ else if (v->di_tv.v_type != tv->v_type)
+ {
+ semsg(_("E963: setting %s to value with wrong type"), name);
+ return;
+ }
+ }
+
+ clear_tv(&v->di_tv);
+ }
+ else // add a new variable
+ {
+ // Can't add "v:" or "a:" variable.
+ if (is_vimvarht(ht) || ht == get_funccal_args_ht())
+ {
+ semsg(_(e_illvar), name);
+ return;
+ }
+
+ // Make sure the variable name is valid.
+ if (!valid_varname(varname))
+ return;
+
+ v = alloc(sizeof(dictitem_T) + STRLEN(varname));
+ if (v == NULL)
+ return;
+ STRCPY(v->di_key, varname);
+ if (hash_add(ht, DI2HIKEY(v)) == FAIL)
+ {
+ vim_free(v);
+ return;
+ }
+ v->di_flags = DI_FLAGS_ALLOC;
+ if (is_const)
+ v->di_flags |= DI_FLAGS_LOCK;
+ }
+
+ if (copy || tv->v_type == VAR_NUMBER || tv->v_type == VAR_FLOAT)
+ copy_tv(tv, &v->di_tv);
+ else
+ {
+ v->di_tv = *tv;
+ v->di_tv.v_lock = 0;
+ init_tv(tv);
+ }
+
+ if (is_const)
+ v->di_tv.v_lock |= VAR_LOCKED;
+ }
+
+ /*
+ * Return TRUE if di_flags "flags" indicates variable "name" is read-only.
+ * Also give an error message.
+ */
+ int
+ var_check_ro(int flags, char_u *name, int use_gettext)
+ {
+ if (flags & DI_FLAGS_RO)
+ {
+ semsg(_(e_readonlyvar), use_gettext ? (char_u *)_(name) : name);
+ return TRUE;
+ }
+ if ((flags & DI_FLAGS_RO_SBX) && sandbox)
+ {
+ semsg(_(e_readonlysbx), use_gettext ? (char_u *)_(name) : name);
+ return TRUE;
+ }
+ return FALSE;
+ }
+
+ /*
+ * Return TRUE if di_flags "flags" indicates variable "name" is fixed.
+ * Also give an error message.
+ */
+ int
+ var_check_fixed(int flags, char_u *name, int use_gettext)
+ {
+ if (flags & DI_FLAGS_FIX)
+ {
+ semsg(_("E795: Cannot delete variable %s"),
+ use_gettext ? (char_u *)_(name) : name);
+ return TRUE;
+ }
+ return FALSE;
+ }
+
+ /*
+ * Check if a funcref is assigned to a valid variable name.
+ * Return TRUE and give an error if not.
+ */
+ int
+ var_check_func_name(
+ char_u *name, // points to start of variable name
+ int new_var) // TRUE when creating the variable
+ {
+ // Allow for w: b: s: and t:.
+ if (!(vim_strchr((char_u *)"wbst", name[0]) != NULL && name[1] == ':')
+ && !ASCII_ISUPPER((name[0] != NUL && name[1] == ':')
+ ? name[2] : name[0]))
+ {
+ semsg(_("E704: Funcref variable name must start with a capital: %s"),
+ name);
+ return TRUE;
+ }
+ // Don't allow hiding a function. When "v" is not NULL we might be
+ // assigning another function to the same var, the type is checked
+ // below.
+ if (new_var && function_exists(name, FALSE))
+ {
+ semsg(_("E705: Variable name conflicts with existing function: %s"),
+ name);
+ return TRUE;
+ }
+ return FALSE;
+ }
+
+ /*
+ * Return TRUE if "flags" indicates variable "name" is locked (immutable).
+ * Also give an error message, using "name" or _("name") when use_gettext is
+ * TRUE.
+ */
+ int
+ var_check_lock(int lock, char_u *name, int use_gettext)
+ {
+ if (lock & VAR_LOCKED)
+ {
+ semsg(_("E741: Value is locked: %s"),
+ name == NULL ? (char_u *)_("Unknown")
+ : use_gettext ? (char_u *)_(name)
+ : name);
+ return TRUE;
+ }
+ if (lock & VAR_FIXED)
+ {
+ semsg(_("E742: Cannot change value of %s"),
+ name == NULL ? (char_u *)_("Unknown")
+ : use_gettext ? (char_u *)_(name)
+ : name);
+ return TRUE;
+ }
+ return FALSE;
+ }
+
+ /*
+ * Check if a variable name is valid.
+ * Return FALSE and give an error if not.
+ */
+ int
+ valid_varname(char_u *varname)
+ {
+ char_u *p;
+
+ for (p = varname; *p != NUL; ++p)
+ if (!eval_isnamec1(*p) && (p == varname || !VIM_ISDIGIT(*p))
+ && *p != AUTOLOAD_CHAR)
+ {
+ semsg(_(e_illvar), varname);
+ return FALSE;
+ }
+ return TRUE;
+ }
+
+ /*
+ * getwinvar() and gettabwinvar()
+ */
+ static void
+ getwinvar(
+ typval_T *argvars,
+ typval_T *rettv,
+ int off) // 1 for gettabwinvar()
+ {
+ win_T *win;
+ char_u *varname;
+ dictitem_T *v;
+ tabpage_T *tp = NULL;
+ int done = FALSE;
+ win_T *oldcurwin;
+ tabpage_T *oldtabpage;
+ int need_switch_win;
+
+ if (off == 1)
+ tp = find_tabpage((int)tv_get_number_chk(&argvars[0], NULL));
+ else
+ tp = curtab;
+ win = find_win_by_nr(&argvars[off], tp);
+ varname = tv_get_string_chk(&argvars[off + 1]);
+ ++emsg_off;
+
+ rettv->v_type = VAR_STRING;
+ rettv->vval.v_string = NULL;
+
+ if (win != NULL && varname != NULL)
+ {
+ // Set curwin to be our win, temporarily. Also set the tabpage,
+ // otherwise the window is not valid. Only do this when needed,
+ // autocommands get blocked.
+ need_switch_win = !(tp == curtab && win == curwin);
+ if (!need_switch_win
+ || switch_win(&oldcurwin, &oldtabpage, win, tp, TRUE) == OK)
+ {
+ if (*varname == '&')
+ {
+ if (varname[1] == NUL)
+ {
+ // get all window-local options in a dict
+ dict_T *opts = get_winbuf_options(FALSE);
+
+ if (opts != NULL)
+ {
+ rettv_dict_set(rettv, opts);
+ done = TRUE;
+ }
+ }
+ else if (get_option_tv(&varname, rettv, 1) == OK)
+ // window-local-option
+ done = TRUE;
+ }
+ else
+ {
+ // Look up the variable.
+ // Let getwinvar({nr}, "") return the "w:" dictionary.
+ v = find_var_in_ht(&win->w_vars->dv_hashtab, 'w',
+ varname, FALSE);
+ if (v != NULL)
+ {
+ copy_tv(&v->di_tv, rettv);
+ done = TRUE;
+ }
+ }
+ }
+
+ if (need_switch_win)
+ // restore previous notion of curwin
+ restore_win(oldcurwin, oldtabpage, TRUE);
+ }
+
+ if (!done && argvars[off + 2].v_type != VAR_UNKNOWN)
+ // use the default return value
+ copy_tv(&argvars[off + 2], rettv);
+
+ --emsg_off;
+ }
+
+ /*
+ * "setwinvar()" and "settabwinvar()" functions
+ */
+ static void
+ setwinvar(typval_T *argvars, typval_T *rettv UNUSED, int off)
+ {
+ win_T *win;
+ win_T *save_curwin;
+ tabpage_T *save_curtab;
+ int need_switch_win;
+ char_u *varname, *winvarname;
+ typval_T *varp;
+ char_u nbuf[NUMBUFLEN];
+ tabpage_T *tp = NULL;
+
+ if (check_secure())
+ return;
+
+ if (off == 1)
+ tp = find_tabpage((int)tv_get_number_chk(&argvars[0], NULL));
+ else
+ tp = curtab;
+ win = find_win_by_nr(&argvars[off], tp);
+ varname = tv_get_string_chk(&argvars[off + 1]);
+ varp = &argvars[off + 2];
+
+ if (win != NULL && varname != NULL && varp != NULL)
+ {
+ need_switch_win = !(tp == curtab && win == curwin);
+ if (!need_switch_win
+ || switch_win(&save_curwin, &save_curtab, win, tp, TRUE) == OK)
+ {
+ if (*varname == '&')
+ {
+ long numval;
+ char_u *strval;
+ int error = FALSE;
+
+ ++varname;
+ numval = (long)tv_get_number_chk(varp, &error);
+ strval = tv_get_string_buf_chk(varp, nbuf);
+ if (!error && strval != NULL)
+ set_option_value(varname, numval, strval, OPT_LOCAL);
+ }
+ else
+ {
+ winvarname = alloc(STRLEN(varname) + 3);
+ if (winvarname != NULL)
+ {
+ STRCPY(winvarname, "w:");
+ STRCPY(winvarname + 2, varname);
+ set_var(winvarname, varp, TRUE);
+ vim_free(winvarname);
+ }
+ }
+ }
+ if (need_switch_win)
+ restore_win(save_curwin, save_curtab, TRUE);
+ }
+ }
+
+ int
+ var_exists(char_u *var)
+ {
+ char_u *name;
+ char_u *tofree;
+ typval_T tv;
+ int len = 0;
+ int n = FALSE;
+
+ // get_name_len() takes care of expanding curly braces
+ name = var;
+ len = get_name_len(&var, &tofree, TRUE, FALSE);
+ if (len > 0)
+ {
+ if (tofree != NULL)
+ name = tofree;
+ n = (get_var_tv(name, len, &tv, NULL, FALSE, TRUE) == OK);
+ if (n)
+ {
+ // handle d.key, l[idx], f(expr)
+ n = (handle_subscript(&var, &tv, TRUE, FALSE, name, &name) == OK);
+ if (n)
+ clear_tv(&tv);
+ }
+ }
+ if (*var != NUL)
+ n = FALSE;
+
+ vim_free(tofree);
+ return n;
+ }
+
+ /*
+ * "gettabvar()" function
+ */
+ void
+ f_gettabvar(typval_T *argvars, typval_T *rettv)
+ {
+ win_T *oldcurwin;
+ tabpage_T *tp, *oldtabpage;
+ dictitem_T *v;
+ char_u *varname;
+ int done = FALSE;
+
+ rettv->v_type = VAR_STRING;
+ rettv->vval.v_string = NULL;
+
+ varname = tv_get_string_chk(&argvars[1]);
+ tp = find_tabpage((int)tv_get_number_chk(&argvars[0], NULL));
+ if (tp != NULL && varname != NULL)
+ {
+ // Set tp to be our tabpage, temporarily. Also set the window to the
+ // first window in the tabpage, otherwise the window is not valid.
+ if (switch_win(&oldcurwin, &oldtabpage,
+ tp == curtab || tp->tp_firstwin == NULL ? firstwin
+ : tp->tp_firstwin, tp, TRUE) == OK)
+ {
+ // look up the variable
+ // Let gettabvar({nr}, "") return the "t:" dictionary.
+ v = find_var_in_ht(&tp->tp_vars->dv_hashtab, 't', varname, FALSE);
+ if (v != NULL)
+ {
+ copy_tv(&v->di_tv, rettv);
+ done = TRUE;
+ }
+ }
+
+ // restore previous notion of curwin
+ restore_win(oldcurwin, oldtabpage, TRUE);
+ }
+
+ if (!done && argvars[2].v_type != VAR_UNKNOWN)
+ copy_tv(&argvars[2], rettv);
+ }
+
+ /*
+ * "gettabwinvar()" function
+ */
+ void
+ f_gettabwinvar(typval_T *argvars, typval_T *rettv)
+ {
+ getwinvar(argvars, rettv, 1);
+ }
+
+ /*
+ * "getwinvar()" function
+ */
+ void
+ f_getwinvar(typval_T *argvars, typval_T *rettv)
+ {
+ getwinvar(argvars, rettv, 0);
+ }
+
+ /*
+ * "settabvar()" function
+ */
+ void
+ f_settabvar(typval_T *argvars, typval_T *rettv)
+ {
+ tabpage_T *save_curtab;
+ tabpage_T *tp;
+ char_u *varname, *tabvarname;
+ typval_T *varp;
+
+ rettv->vval.v_number = 0;
+
+ if (check_secure())
+ return;
+
+ tp = find_tabpage((int)tv_get_number_chk(&argvars[0], NULL));
+ varname = tv_get_string_chk(&argvars[1]);
+ varp = &argvars[2];
+
+ if (varname != NULL && varp != NULL && tp != NULL)
+ {
+ save_curtab = curtab;
+ goto_tabpage_tp(tp, FALSE, FALSE);
+
+ tabvarname = alloc(STRLEN(varname) + 3);
+ if (tabvarname != NULL)
+ {
+ STRCPY(tabvarname, "t:");
+ STRCPY(tabvarname + 2, varname);
+ set_var(tabvarname, varp, TRUE);
+ vim_free(tabvarname);
+ }
+
+ // Restore current tabpage
+ if (valid_tabpage(save_curtab))
+ goto_tabpage_tp(save_curtab, FALSE, FALSE);
+ }
+ }
+
+ /*
+ * "settabwinvar()" function
+ */
+ void
+ f_settabwinvar(typval_T *argvars, typval_T *rettv)
+ {
+ setwinvar(argvars, rettv, 1);
+ }
+
+ /*
+ * "setwinvar()" function
+ */
+ void
+ f_setwinvar(typval_T *argvars, typval_T *rettv)
+ {
+ setwinvar(argvars, rettv, 0);
+ }
+
+ #endif // FEAT_EVAL
*** ../vim-8.1.1932/src/globals.h 2019-08-24 20:54:15.975845584 +0200
--- src/globals.h 2019-08-27 22:37:44.277253720 +0200
***************
*** 1547,1552 ****
--- 1547,1556 ----
EXTERN char e_re_corr[] INIT(= N_("E44: Corrupted regexp program"));
EXTERN char e_readonly[] INIT(= N_("E45: 'readonly' option is set (add !
to override)"));
#ifdef FEAT_EVAL
+ EXTERN char e_undefvar[] INIT(= N_("E121: Undefined variable: %s"));
+ EXTERN char e_letwrong[] INIT(= N_("E734: Wrong variable type for %s="));
+ EXTERN char e_illvar[] INIT(= N_("E461: Illegal variable name:
%s"));
+ EXTERN char e_cannot_mod[] INIT(= N_("E995: Cannot modify existing
variable"));
EXTERN char e_readonlyvar[] INIT(= N_("E46: Cannot change read-only
variable \"%s\""));
EXTERN char e_readonlysbx[] INIT(= N_("E794: Cannot set variable in the
sandbox: \"%s\""));
EXTERN char e_emptykey[] INIT(= N_("E713: Cannot use empty key for
Dictionary"));
*** ../vim-8.1.1932/src/proto.h 2019-08-25 15:40:39.662739502 +0200
--- src/proto.h 2019-08-27 22:37:44.277253720 +0200
***************
*** 112,117 ****
--- 112,118 ----
# ifdef FEAT_VIMINFO
# include "viminfo.pro"
# endif
+ # include "evalvars.pro"
/* These prototypes cannot be produced automatically. */
int smsg(const char *, ...)
*** ../vim-8.1.1932/src/proto/eval.pro 2019-08-20 20:13:40.330821936 +0200
--- src/proto/eval.pro 2019-08-27 22:41:07.016138684 +0200
***************
*** 1,4 ****
--- 1,6 ----
/* eval.c */
+ varnumber_T num_divide(varnumber_T n1, varnumber_T n2);
+ varnumber_T num_modulus(varnumber_T n1, varnumber_T n2);
void eval_init(void);
void eval_clear(void);
void set_internal_string_var(char_u *name, char_u *value);
***************
*** 17,22 ****
--- 19,28 ----
char_u *eval_to_string(char_u *arg, char_u **nextcmd, int convert);
char_u *eval_to_string_safe(char_u *arg, char_u **nextcmd, int use_sandbox);
varnumber_T eval_to_number(char_u *expr);
+ void list_vim_vars(int *first);
+ void list_script_vars(int *first);
+ int is_vimvarht(hashtab_T *ht);
+ int is_compatht(hashtab_T *ht);
void prepare_vimvar(int idx, typval_T *save_tv);
void restore_vimvar(int idx, typval_T *save_tv);
list_T *eval_spell_expr(char_u *badword, char_u *expr);
***************
*** 27,44 ****
void *call_func_retstr(char_u *func, int argc, typval_T *argv);
void *call_func_retlist(char_u *func, int argc, typval_T *argv);
int eval_foldexpr(char_u *arg, int *cp);
- void ex_let(exarg_T *eap);
- void ex_const(exarg_T *eap);
- void list_hashtable_vars(hashtab_T *ht, char *prefix, int empty, int *first);
char_u *get_lval(char_u *name, typval_T *rettv, lval_T *lp, int unlet, int
skip, int flags, int fne_flags);
void clear_lval(lval_T *lp);
void *eval_for_line(char_u *arg, int *errp, char_u **nextcmdp, int skip);
int next_for_item(void *fi_void, char_u *arg);
void free_for_info(void *fi_void);
void set_context_for_expression(expand_T *xp, char_u *arg, cmdidx_T cmdidx);
- void ex_unlet(exarg_T *eap);
- void ex_lockvar(exarg_T *eap);
- int do_unlet(char_u *name, int forceit);
void del_menutrans_vars(void);
char_u *get_user_var_name(expand_T *xp, int idx);
int pattern_match(char_u *pat, char_u *text, int ic);
--- 33,45 ----
void *call_func_retstr(char_u *func, int argc, typval_T *argv);
void *call_func_retlist(char_u *func, int argc, typval_T *argv);
int eval_foldexpr(char_u *arg, int *cp);
char_u *get_lval(char_u *name, typval_T *rettv, lval_T *lp, int unlet, int
skip, int flags, int fne_flags);
void clear_lval(lval_T *lp);
+ void set_var_lval(lval_T *lp, char_u *endp, typval_T *rettv, int copy, int
is_const, char_u *op);
void *eval_for_line(char_u *arg, int *errp, char_u **nextcmdp, int skip);
int next_for_item(void *fi_void, char_u *arg);
void free_for_info(void *fi_void);
void set_context_for_expression(expand_T *xp, char_u *arg, cmdidx_T cmdidx);
void del_menutrans_vars(void);
char_u *get_user_var_name(expand_T *xp, int idx);
int pattern_match(char_u *pat, char_u *text, int ic);
***************
*** 62,68 ****
--- 63,71 ----
int string2float(char_u *text, float_T *value);
pos_T *var2fpos(typval_T *varp, int dollar_lnum, int *fnum);
int list2fpos(typval_T *arg, pos_T *posp, int *fnump, colnr_T *curswantp);
+ int get_env_len(char_u **arg);
int get_id_len(char_u **arg);
+ int get_name_len(char_u **arg, char_u **alias, int evaluate, int verbose);
char_u *find_name_end(char_u *arg, char_u **expr_start, char_u **expr_end,
int flags);
int eval_isnamec(int c);
int eval_isnamec1(int c);
***************
*** 98,115 ****
dictitem_T *find_var(char_u *name, hashtab_T **htp, int no_autoload);
dictitem_T *find_var_in_ht(hashtab_T *ht, int htname, char_u *varname, int
no_autoload);
hashtab_T *find_var_ht(char_u *name, char_u **varname);
- char_u *get_var_value(char_u *name);
void new_script_vars(scid_T id);
void init_var_dict(dict_T *dict, dictitem_T *dict_var, int scope);
void unref_var_dict(dict_T *dict);
- void vars_clear(hashtab_T *ht);
- void vars_clear_ext(hashtab_T *ht, int free_val);
- void set_var(char_u *name, typval_T *tv, int copy);
- int var_check_ro(int flags, char_u *name, int use_gettext);
- int var_check_fixed(int flags, char_u *name, int use_gettext);
- int var_check_func_name(char_u *name, int new_var);
- int var_check_lock(int lock, char_u *name, int use_gettext);
- int valid_varname(char_u *varname);
void copy_tv(typval_T *from, typval_T *to);
int item_copy(typval_T *from, typval_T *to, int deep, int copyID);
void get_user_input(typval_T *argvars, typval_T *rettv, int inputdialog, int
secret);
--- 101,109 ----
***************
*** 119,126 ****
win_T *find_win_by_nr(typval_T *vp, tabpage_T *tp);
win_T *find_win_by_nr_or_id(typval_T *vp);
win_T *find_tabwin(typval_T *wvp, typval_T *tvp, tabpage_T **ptp);
! void getwinvar(typval_T *argvars, typval_T *rettv, int off);
! void setwinvar(typval_T *argvars, typval_T *rettv, int off);
char_u *autoload_name(char_u *name);
int script_autoload(char_u *name, int reload);
void last_set_msg(sctx_T script_ctx);
--- 113,119 ----
win_T *find_win_by_nr(typval_T *vp, tabpage_T *tp);
win_T *find_win_by_nr_or_id(typval_T *vp);
win_T *find_tabwin(typval_T *wvp, typval_T *tvp, tabpage_T **ptp);
! char_u *find_option_end(char_u **arg, int *opt_flags);
char_u *autoload_name(char_u *name);
int script_autoload(char_u *name, int reload);
void last_set_msg(sctx_T script_ctx);
***************
*** 128,134 ****
void assert_error(garray_T *gap);
int typval_compare(typval_T *typ1, typval_T *typ2, exptype_T type, int
type_is, int ic);
char_u *typval_tostring(typval_T *arg);
- int var_exists(char_u *var);
int modify_fname(char_u *src, int tilde_file, int *usedlen, char_u **fnamep,
char_u **bufp, int *fnamelen);
char_u *do_string_sub(char_u *str, char_u *pat, char_u *sub, typval_T *expr,
char_u *flags);
void filter_map(typval_T *argvars, typval_T *rettv, int map);
--- 121,126 ----
*** ../vim-8.1.1932/src/proto/evalvars.pro 2019-08-27 22:47:03.090089307
+0200
--- src/proto/evalvars.pro 2019-08-27 22:41:11.500114155 +0200
***************
*** 0 ****
--- 1,29 ----
+ /* evalvars.c */
+ void ex_let(exarg_T *eap);
+ void ex_const(exarg_T *eap);
+ int ex_let_vars(char_u *arg_start, typval_T *tv, int copy, int semicolon, int
var_count, int is_const, char_u *op);
+ char_u *skip_var_list(char_u *arg, int *var_count, int *semicolon);
+ void list_hashtable_vars(hashtab_T *ht, char *prefix, int empty, int *first);
+ void ex_unlet(exarg_T *eap);
+ void ex_lockvar(exarg_T *eap);
+ int do_unlet(char_u *name, int forceit);
+ int get_var_tv(char_u *name, int len, typval_T *rettv, dictitem_T **dip, int
verbose, int no_autoload);
+ char_u *get_var_value(char_u *name);
+ void vars_clear(hashtab_T *ht);
+ void vars_clear_ext(hashtab_T *ht, int free_val);
+ void delete_var(hashtab_T *ht, hashitem_T *hi);
+ void set_var(char_u *name, typval_T *tv, int copy);
+ void set_var_const(char_u *name, typval_T *tv, int copy, int is_const);
+ int var_check_ro(int flags, char_u *name, int use_gettext);
+ int var_check_fixed(int flags, char_u *name, int use_gettext);
+ int var_check_func_name(char_u *name, int new_var);
+ int var_check_lock(int lock, char_u *name, int use_gettext);
+ int valid_varname(char_u *varname);
+ int var_exists(char_u *var);
+ void f_gettabvar(typval_T *argvars, typval_T *rettv);
+ void f_gettabwinvar(typval_T *argvars, typval_T *rettv);
+ void f_getwinvar(typval_T *argvars, typval_T *rettv);
+ void f_settabvar(typval_T *argvars, typval_T *rettv);
+ void f_settabwinvar(typval_T *argvars, typval_T *rettv);
+ void f_setwinvar(typval_T *argvars, typval_T *rettv);
+ /* vim: set ft=c : */
*** ../vim-8.1.1932/src/vim.h 2019-08-23 20:58:42.020375498 +0200
--- src/vim.h 2019-08-27 22:37:44.277253720 +0200
***************
*** 2003,2008 ****
--- 2003,2010 ----
#define VAR_TYPE_CHANNEL 9
#define VAR_TYPE_BLOB 10
+ #define DICT_MAXNEST 100 /* maximum nesting of lists and dicts */
+
#ifdef FEAT_CLIPBOARD
/* VIM_ATOM_NAME is the older Vim-specific selection type for X11. Still
*** ../vim-8.1.1932/src/version.c 2019-08-27 21:56:01.699592495 +0200
--- src/version.c 2019-08-27 22:47:10.494023254 +0200
***************
*** 763,764 ****
--- 763,766 ----
{ /* Add new patch number below this line */
+ /**/
+ 1933,
/**/
--
The difference between theory and practice, is that in theory, there
is no difference between theory and practice.
/// Bram Moolenaar -- [email protected] -- http://www.Moolenaar.net \\\
/// sponsor Vim, vote for features -- http://www.Vim.org/sponsor/ \\\
\\\ an exciting new programming language -- http://www.Zimbu.org ///
\\\ help me help AIDS victims -- http://ICCF-Holland.org ///
--
--
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