patch 9.0.1483: += operator does not work on class member
Problem: += operator does not work on class member.
Solution: Do not skip as if "this." was used. (Christian Brabandt,
closes #12263)
diff --git a/src/vim9compile.c b/src/vim9compile.c
index e689c55..f045c74 100644
--- a/src/vim9compile.c
+++ b/src/vim9compile.c
@@ -2065,16 +2065,31 @@
{
if (lhs->lhs_type->tt_type == VAR_OBJECT)
{
- // "this.value": load "this" object and get the value at index
- // for an object or class member get the type of the member
+ // "this.value": load "this" object and get the value at index for an
+ // object or class member get the type of the member.
+ // Also for "obj.value".
+ char_u *dot = vim_strchr(var_start, '.');
+ if (dot == NULL)
+ return FAIL;
+
class_T *cl = lhs->lhs_type->tt_class;
- type_T *type = class_member_type(cl, var_start + 5,
+ type_T *type = class_member_type(cl, dot + 1,
lhs->lhs_end, &lhs->lhs_member_idx);
if (lhs->lhs_member_idx < 0)
return FAIL;
- if (generate_LOAD(cctx, ISN_LOAD, 0, NULL, lhs->lhs_type) == FAIL)
- return FAIL;
+ if (dot - var_start == 4 && STRNCMP(var_start, "this", 4) == 0)
+ {
+ // load "this"
+ if (generate_LOAD(cctx, ISN_LOAD, 0, NULL, lhs->lhs_type) == FAIL)
+ return FAIL;
+ }
+ else
+ {
+ // load object variable or argument
+ if (compile_load_lhs(lhs, var_start, lhs->lhs_type, cctx) == FAIL)
+ return FAIL;
+ }
if (cl->class_flags & CLASS_INTERFACE)
return generate_GET_ITF_MEMBER(cctx, cl, lhs->lhs_member_idx, type);
return generate_GET_OBJ_MEMBER(cctx, lhs->lhs_member_idx, type);
@@ -2169,7 +2184,7 @@
if (cctx->ctx_skip == SKIP_YES)
return OK;
- // Load the dict or list. On the stack we then have:
+ // Load the dict, list or object. On the stack we then have:
// - value (for assignment, not for :unlet)
// - index
// - for [a : b] second index
@@ -2731,7 +2746,7 @@
if (lhs.lhs_has_index)
{
// Use the info in "lhs" to store the value at the index in the
- // list or dict.
+ // list, dict or object.
if (compile_assign_unlet(var_start, &lhs, TRUE, rhs_type, cctx)
== FAIL)
{