diff options
Diffstat (limited to 'thirdparty/harfbuzz/src/hb-draw.cc')
| -rw-r--r-- | thirdparty/harfbuzz/src/hb-draw.cc | 91 |
1 files changed, 61 insertions, 30 deletions
diff --git a/thirdparty/harfbuzz/src/hb-draw.cc b/thirdparty/harfbuzz/src/hb-draw.cc index 46797e64e6..72c203f24f 100644 --- a/thirdparty/harfbuzz/src/hb-draw.cc +++ b/thirdparty/harfbuzz/src/hb-draw.cc @@ -80,6 +80,56 @@ hb_draw_close_path_nil (hb_draw_funcs_t *dfuncs HB_UNUSED, void *draw_data HB_UN void *user_data HB_UNUSED) {} +static bool +_hb_draw_funcs_set_preamble (hb_draw_funcs_t *dfuncs, + bool func_is_null, + void **user_data, + hb_destroy_func_t *destroy) +{ + if (hb_object_is_immutable (dfuncs)) + { + if (*destroy) + (*destroy) (*user_data); + return false; + } + + if (func_is_null) + { + if (*destroy) + (*destroy) (*user_data); + *destroy = nullptr; + *user_data = nullptr; + } + + return true; +} + +static bool +_hb_draw_funcs_set_middle (hb_draw_funcs_t *dfuncs, + void *user_data, + hb_destroy_func_t destroy) +{ + if (user_data && !dfuncs->user_data) + { + dfuncs->user_data = (decltype (dfuncs->user_data)) hb_calloc (1, sizeof (*dfuncs->user_data)); + if (unlikely (!dfuncs->user_data)) + goto fail; + } + if (destroy && !dfuncs->destroy) + { + dfuncs->destroy = (decltype (dfuncs->destroy)) hb_calloc (1, sizeof (*dfuncs->destroy)); + if (unlikely (!dfuncs->destroy)) + goto fail; + } + + return true; + +fail: + if (destroy) + (destroy) (user_data); + return false; +} + #define HB_DRAW_FUNC_IMPLEMENT(name) \ \ void \ @@ -88,43 +138,24 @@ hb_draw_funcs_set_##name##_func (hb_draw_funcs_t *dfuncs, \ void *user_data, \ hb_destroy_func_t destroy) \ { \ - if (hb_object_is_immutable (dfuncs)) \ - return; \ + if (!_hb_draw_funcs_set_preamble (dfuncs, !func, &user_data, &destroy))\ + return; \ \ if (dfuncs->destroy && dfuncs->destroy->name) \ dfuncs->destroy->name (!dfuncs->user_data ? nullptr : dfuncs->user_data->name); \ \ - if (user_data && !dfuncs->user_data) \ - { \ - dfuncs->user_data = (decltype (dfuncs->user_data)) hb_calloc (1, sizeof (*dfuncs->user_data)); \ - if (unlikely (!dfuncs->user_data)) \ - goto fail; \ - } \ - if (destroy && !dfuncs->destroy) \ - { \ - dfuncs->destroy = (decltype (dfuncs->destroy)) hb_calloc (1, sizeof (*dfuncs->destroy)); \ - if (unlikely (!dfuncs->destroy)) \ - goto fail; \ - } \ + if (!_hb_draw_funcs_set_middle (dfuncs, user_data, destroy)) \ + return; \ \ - if (func) { \ + if (func) \ dfuncs->func.name = func; \ - if (dfuncs->user_data) \ - dfuncs->user_data->name = user_data; \ - if (dfuncs->destroy) \ - dfuncs->destroy->name = destroy; \ - } else { \ + else \ dfuncs->func.name = hb_draw_##name##_nil; \ - if (dfuncs->user_data) \ - dfuncs->user_data->name = nullptr; \ - if (dfuncs->destroy) \ - dfuncs->destroy->name = nullptr; \ - } \ - return; \ - \ -fail: \ - if (destroy) \ - destroy (user_data); \ + \ + if (dfuncs->user_data) \ + dfuncs->user_data->name = user_data; \ + if (dfuncs->destroy) \ + dfuncs->destroy->name = destroy; \ } HB_DRAW_FUNCS_IMPLEMENT_CALLBACKS |