vim-patch:8.1.1933: the eval.c file is too big (#19462)

Problem:    The eval.c file is too big.
Solution:   Move code related to variables to evalvars.c. (Yegappan
            Lakshmanan, closes vim/vim#4868)
https://github.com/vim/vim/commit/0522ba0359c96a8c2a4fc8fca0d3b58e49dda759

Name the new file eval/vars.c instead.

scripts/vim-patch.sh

@@ -229,6 +229,10 @@ preprocess_patch() {
   LC_ALL=C sed -e 's/\( [ab]\/src\/nvim\)\/evalfunc\.c/\1\/eval\/funcs\.c/g' \
     "$file" > "$file".tmp && mv "$file".tmp "$file"
 
+  # Rename evalvars.c to eval/vars.c
+  LC_ALL=C sed -e 's/\( [ab]\/src\/nvim\)\/evalfunc\.c/\1\/eval\/vars\.c/g' \
+    "$file" > "$file".tmp && mv "$file".tmp "$file"
+
   # Rename userfunc.c to eval/userfunc.c
   LC_ALL=C sed -e 's/\( [ab]\/src\/nvim\)\/userfunc\.c/\1\/eval\/userfunc\.c/g' \
     "$file" > "$file".tmp && mv "$file".tmp "$file"

src/nvim/autocmd.c

@@ -14,6 +14,7 @@
 #include "nvim/edit.h"
 #include "nvim/eval.h"
 #include "nvim/eval/userfunc.h"
+#include "nvim/eval/vars.h"
 #include "nvim/ex_docmd.h"
 #include "nvim/ex_getln.h"
 #include "nvim/fileio.h"

src/nvim/buffer.c

@@ -37,6 +37,7 @@
 #include "nvim/diff.h"
 #include "nvim/digraph.h"
 #include "nvim/eval.h"
+#include "nvim/eval/vars.h"
 #include "nvim/ex_cmds.h"
 #include "nvim/ex_cmds2.h"
 #include "nvim/ex_docmd.h"

src/nvim/eval/executor.c

@@ -12,8 +12,6 @@
 # include "eval/executor.c.generated.h"
 #endif
 
-static char *e_letwrong = N_("E734: Wrong variable type for %s=");
-
 char *e_listidx = N_("E684: list index out of range: %" PRId64);
 
 /// Handle tv1 += tv2, -=, *=, /=,  %=, .=

src/nvim/eval/funcs.c

@@ -25,6 +25,7 @@
 #include "nvim/eval/funcs.h"
 #include "nvim/eval/typval.h"
 #include "nvim/eval/userfunc.h"
+#include "nvim/eval/vars.h"
 #include "nvim/ex_docmd.h"
 #include "nvim/ex_getln.h"
 #include "nvim/file_search.h"
@@ -3707,50 +3708,6 @@ static void f_gettabinfo(typval_T *argvars, typval_T *rettv, FunPtr fptr)
   }
 }
 
-/// "gettabvar()" function
-static void f_gettabvar(typval_T *argvars, typval_T *rettv, FunPtr fptr)
-{
-  bool done = false;
-
-  rettv->v_type = VAR_STRING;
-  rettv->vval.v_string = NULL;
-
-  const char *const varname = tv_get_string_chk(&argvars[1]);
-  tabpage_T *const 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.
-    win_T *const window = tp == curtab || tp->tp_firstwin == NULL
-        ? firstwin
-        : tp->tp_firstwin;
-    switchwin_T switchwin;
-    if (switch_win(&switchwin, window, tp, true) == OK) {
-      // look up the variable
-      // Let gettabvar({nr}, "") return the "t:" dictionary.
-      const dictitem_T *const v = find_var_in_ht(&tp->tp_vars->dv_hashtab, 't',
-                                                 varname, strlen(varname),
-                                                 false);
-      if (v != NULL) {
-        tv_copy(&v->di_tv, rettv);
-        done = true;
-      }
-    }
-
-    // restore previous notion of curwin
-    restore_win(&switchwin, true);
-  }
-
-  if (!done && argvars[2].v_type != VAR_UNKNOWN) {
-    tv_copy(&argvars[2], rettv);
-  }
-}
-
-/// "gettabwinvar()" function
-static void f_gettabwinvar(typval_T *argvars, typval_T *rettv, FunPtr fptr)
-{
-  getwinvar(argvars, rettv, 1);
-}
-
 /// "gettagstack()" function
 static void f_gettagstack(typval_T *argvars, typval_T *rettv, FunPtr fptr)
 {
@@ -3974,12 +3931,6 @@ static void f_getwinposy(typval_T *argvars, typval_T *rettv, FunPtr fptr)
   rettv->vval.v_number = -1;
 }
 
-/// "getwinvar()" function
-static void f_getwinvar(typval_T *argvars, typval_T *rettv, FunPtr fptr)
-{
-  getwinvar(argvars, rettv, 0);
-}
-
 /// "glob()" function
 static void f_glob(typval_T *argvars, typval_T *rettv, FunPtr fptr)
 {
@@ -8856,43 +8807,6 @@ free_lstval:
   }
 }
 
-/// "settabvar()" function
-static void f_settabvar(typval_T *argvars, typval_T *rettv, FunPtr fptr)
-{
-  rettv->vval.v_number = 0;
-
-  if (check_secure()) {
-    return;
-  }
-
-  tabpage_T *const tp = find_tabpage((int)tv_get_number_chk(&argvars[0], NULL));
-  const char *const varname = tv_get_string_chk(&argvars[1]);
-  typval_T *const varp = &argvars[2];
-
-  if (varname != NULL && tp != NULL) {
-    tabpage_T *const save_curtab = curtab;
-    goto_tabpage_tp(tp, false, false);
-
-    const size_t varname_len = strlen(varname);
-    char *const tabvarname = xmalloc(varname_len + 3);
-    memcpy(tabvarname, "t:", 2);
-    memcpy(tabvarname + 2, varname, varname_len + 1);
-    set_var(tabvarname, varname_len + 2, varp, true);
-    xfree(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, FunPtr fptr)
-{
-  setwinvar(argvars, rettv, 1);
-}
-
 /// "settagstack()" function
 static void f_settagstack(typval_T *argvars, typval_T *rettv, FunPtr fptr)
 {
@@ -8946,12 +8860,6 @@ static void f_settagstack(typval_T *argvars, typval_T *rettv, FunPtr fptr)
   }
 }
 
-/// "setwinvar()" function
-static void f_setwinvar(typval_T *argvars, typval_T *rettv, FunPtr fptr)
-{
-  setwinvar(argvars, rettv, 0);
-}
-
 /// f_sha256 - sha256({string}) function
 static void f_sha256(typval_T *argvars, typval_T *rettv, FunPtr fptr)
 {

src/nvim/eval/typval.c

@@ -19,6 +19,7 @@
 #include "nvim/eval/typval.h"
 #include "nvim/eval/typval_encode.h"
 #include "nvim/eval/userfunc.h"
+#include "nvim/eval/vars.h"
 #include "nvim/garray.h"
 #include "nvim/gettext.h"
 #include "nvim/globals.h"

src/nvim/eval/userfunc.c

@@ -10,6 +10,7 @@
 #include "nvim/eval.h"
 #include "nvim/eval/encode.h"
 #include "nvim/eval/userfunc.h"
+#include "nvim/eval/vars.h"
 #include "nvim/ex_cmds2.h"
 #include "nvim/ex_docmd.h"
 #include "nvim/ex_getln.h"

src/nvim/eval/vars.h

@@ -0,0 +1,10 @@
+#ifndef NVIM_EVAL_VARS_H
+#define NVIM_EVAL_VARS_H
+
+#include "nvim/eval/funcs.h"  // For FunPtr
+#include "nvim/ex_cmds_defs.h"  // For exarg_T
+
+#ifdef INCLUDE_GENERATED_DECLARATIONS
+# include "eval/vars.h.generated.h"
+#endif
+#endif  // NVIM_EVAL_VARS_H

src/nvim/ex_cmds2.c

@@ -24,6 +24,7 @@
 #include "nvim/charset.h"
 #include "nvim/debugger.h"
 #include "nvim/eval/userfunc.h"
+#include "nvim/eval/vars.h"
 #include "nvim/ex_cmds.h"
 #include "nvim/ex_cmds2.h"
 #include "nvim/ex_eval.h"

src/nvim/ex_docmd.c

@@ -21,6 +21,7 @@
 #include "nvim/edit.h"
 #include "nvim/eval.h"
 #include "nvim/eval/userfunc.h"
+#include "nvim/eval/vars.h"
 #include "nvim/event/rstream.h"
 #include "nvim/event/wstream.h"
 #include "nvim/ex_cmds.h"

src/nvim/globals.h

@@ -941,6 +941,9 @@ EXTERN char e_loclist[] INIT(= N_("E776: No location list"));
 EXTERN char e_re_damg[] INIT(= N_("E43: Damaged match string"));
 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)"));
+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_stringreq[] INIT(= N_("E928: String required"));
 EXTERN char e_dictreq[] INIT(= N_("E715: Dictionary required"));

src/nvim/highlight_group.c

@@ -9,6 +9,7 @@
 #include "nvim/autocmd.h"
 #include "nvim/charset.h"
 #include "nvim/cursor_shape.h"
+#include "nvim/eval/vars.h"
 #include "nvim/fold.h"
 #include "nvim/highlight.h"
 #include "nvim/highlight_group.h"

src/nvim/keycodes.c

@@ -8,7 +8,7 @@
 #include "nvim/ascii.h"
 #include "nvim/charset.h"
 #include "nvim/edit.h"
-#include "nvim/eval.h"
+#include "nvim/eval/vars.h"
 #include "nvim/keycodes.h"
 #include "nvim/memory.h"
 #include "nvim/message.h"

src/nvim/option.c

@@ -37,6 +37,7 @@
 #include "nvim/edit.h"
 #include "nvim/eval.h"
 #include "nvim/eval/typval.h"
+#include "nvim/eval/vars.h"
 #include "nvim/ex_cmds2.h"
 #include "nvim/ex_docmd.h"
 #include "nvim/ex_getln.h"

src/nvim/syntax.c

@@ -18,6 +18,7 @@
 #include "nvim/charset.h"
 #include "nvim/cursor_shape.h"
 #include "nvim/eval.h"
+#include "nvim/eval/vars.h"
 #include "nvim/ex_cmds2.h"
 #include "nvim/ex_docmd.h"
 #include "nvim/fileio.h"

src/nvim/window.c

@@ -13,6 +13,7 @@
 #include "nvim/diff.h"
 #include "nvim/edit.h"
 #include "nvim/eval.h"
+#include "nvim/eval/vars.h"
 #include "nvim/ex_cmds.h"
 #include "nvim/ex_cmds2.h"
 #include "nvim/ex_docmd.h"