patch 8.2.1373: Vim9: no error for assigning to non-existing script var
Problem: Vim9: no error for assigning to non-existing script var.
Solution: Check that in Vim9 script the variable was defined. (closes #6630)
diff --git a/src/vim9compile.c b/src/vim9compile.c
index f8381d7..dc10b48 100644
--- a/src/vim9compile.c
+++ b/src/vim9compile.c
@@ -148,6 +148,7 @@
static char e_used_as_arg[] = N_("E1006: %s is used as an argument");
static char e_cannot_use_void[] = N_("E1031: Cannot use void value");
static char e_namespace[] = N_("E1075: Namespace not supported: %s");
+static char e_unknown_var[] = N_("E1089: unknown variable: %s");
static void delete_def_function_contents(dfunc_T *dfunc);
static void arg_type_mismatch(type_T *expected, type_T *actual, int argidx);
@@ -5335,7 +5336,6 @@
else
{
int idx;
- imported_T *import = NULL;
for (idx = 0; reserved[idx] != NULL; ++idx)
if (STRCMP(reserved[idx], name) == 0)
@@ -5374,50 +5374,68 @@
goto theend;
}
}
- else if ((varlen > 1 && STRNCMP(var_start, "s:", 2) == 0)
- || lookup_script(var_start, varlen) == OK
- || (import = find_imported(var_start, varlen, cctx))
- != NULL)
+ else
{
- char_u *rawname = name + (name[1] == ':' ? 2 : 0);
+ int script_namespace = varlen > 1
+ && STRNCMP(var_start, "s:", 2) == 0;
+ int script_var = (script_namespace
+ ? lookup_script(var_start + 2, varlen - 2)
+ : lookup_script(var_start, varlen)) == OK;
+ imported_T *import =
+ find_imported(var_start, varlen, cctx);
- if (is_decl)
+ if (script_namespace || script_var || import != NULL)
{
- if ((varlen > 1 && STRNCMP(var_start, "s:", 2) == 0))
- semsg(_("E1101: Cannot declare a script variable in a function: %s"),
+ char_u *rawname = name + (name[1] == ':' ? 2 : 0);
+
+ if (is_decl)
+ {
+ if (script_namespace)
+ semsg(_("E1101: Cannot declare a script variable in a function: %s"),
name);
- else
- semsg(_("E1054: Variable already declared in the script: %s"),
+ else
+ semsg(_("E1054: Variable already declared in the script: %s"),
+ name);
+ goto theend;
+ }
+ else if (cctx->ctx_ufunc->uf_script_ctx_version
+ == SCRIPT_VERSION_VIM9
+ && script_namespace
+ && !script_var && import == NULL)
+ {
+ semsg(_(e_unknown_var), name);
+ goto theend;
+ }
+
+ dest = dest_script;
+
+ // existing script-local variables should have a type
+ scriptvar_sid = current_sctx.sc_sid;
+ if (import != NULL)
+ scriptvar_sid = import->imp_sid;
+ scriptvar_idx = get_script_item_idx(scriptvar_sid,
+ rawname, TRUE);
+ if (scriptvar_idx >= 0)
+ {
+ scriptitem_T *si = SCRIPT_ITEM(scriptvar_sid);
+ svar_T *sv =
+ ((svar_T *)si->sn_var_vals.ga_data)
+ + scriptvar_idx;
+ type = sv->sv_type;
+ }
+ }
+ else if (name[1] == ':' && name[2] != NUL)
+ {
+ semsg(_("E1082: Cannot use a namespaced variable: %s"),
name);
goto theend;
}
- dest = dest_script;
-
- // existing script-local variables should have a type
- scriptvar_sid = current_sctx.sc_sid;
- if (import != NULL)
- scriptvar_sid = import->imp_sid;
- scriptvar_idx = get_script_item_idx(scriptvar_sid,
- rawname, TRUE);
- if (scriptvar_idx >= 0)
+ else if (!is_decl)
{
- scriptitem_T *si = SCRIPT_ITEM(scriptvar_sid);
- svar_T *sv = ((svar_T *)si->sn_var_vals.ga_data)
- + scriptvar_idx;
- type = sv->sv_type;
+ semsg(_(e_unknown_var), name);
+ goto theend;
}
}
- else if (name[1] == ':' && name[2] != NUL)
- {
- semsg(_("E1082: Cannot use a namespaced variable: %s"),
- name);
- goto theend;
- }
- else if (!is_decl)
- {
- semsg(_("E1089: unknown variable: %s"), name);
- goto theend;
- }
}
if (declare_error)