patch 9.0.1955: Vim9: lockvar issues with objects/classes
Problem: Vim9: lockvar issues with objects/classes
Solution: fix `get_lhs()` object/class access and avoid `SEGV`,
make error messages more accurate.
- `get_lval()` detects/returns object/class access
- `compile_lock_unlock()` generate code for bare static and obj_arg access
- `do_lock_var()` check lval for `ll_object`/`ll_class` and fail if so.
Details:
- Add `ll_object`/`ll_class`/`ll_oi` to `lval_T`.
- Add `lockunlock_T` to `isn_T` for `is_arg` to specify handling of `lval_root` in `get_lval()`.
- In `get_lval()`, fill in `ll_object`/`ll_class`/`ll_oi` as needed; when no `[idx] or .key`, check lval_root on the way out.
- In `do_lock_var()` check for `ll_object`/`ll_class`; also bullet proof ll_dict case
and give `Dictionay required` if problem. (not needed to avoid lockvar crash anymore)
- In `compile_lock_unlock()` compile for the class variable and func arg cases.
closes: #13174
Signed-off-by: Christian Brabandt <cb@256bit.org>
Co-authored-by: Ernie Rael <errael@raelity.com>
diff --git a/src/proto/vim9instr.pro b/src/proto/vim9instr.pro
index 7c13f93..898eb97 100644
--- a/src/proto/vim9instr.pro
+++ b/src/proto/vim9instr.pro
@@ -69,6 +69,7 @@
int generate_ECHOWINDOW(cctx_T *cctx, int count, long time);
int generate_SOURCE(cctx_T *cctx, int sid);
int generate_PUT(cctx_T *cctx, int regname, linenr_T lnum);
+int generate_LOCKUNLOCK(cctx_T *cctx, char_u *line, int is_arg);
int generate_EXEC_copy(cctx_T *cctx, isntype_T isntype, char_u *line);
int generate_EXEC(cctx_T *cctx, isntype_T isntype, char_u *str);
int generate_LEGACY_EVAL(cctx_T *cctx, char_u *line);