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| author | Yukihiro Matz Matsumoto <[email protected]> | 2012-12-12 18:22:23 +0900 |
|---|---|---|
| committer | Yukihiro Matz Matsumoto <[email protected]> | 2012-12-12 18:22:23 +0900 |
| commit | f63d5c290510965e1256e4fac77709da83a6719a (patch) | |
| tree | eb93951410ec73c29a7cc9288c24a7eabdfc3098 /src/variable.c | |
| parent | 2a5d82885ae5b0c0f2de1e7a62e9b0bbec1294a7 (diff) | |
| download | mruby-f63d5c290510965e1256e4fac77709da83a6719a.tar.gz mruby-f63d5c290510965e1256e4fac77709da83a6719a.zip | |
new function mrb_obj_iv_ifnone()
Diffstat (limited to 'src/variable.c')
| -rw-r--r-- | src/variable.c | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/src/variable.c b/src/variable.c index 6907a8e2a..992663408 100644 --- a/src/variable.c +++ b/src/variable.c @@ -461,6 +461,21 @@ mrb_obj_iv_set(mrb_state *mrb, struct RObject *obj, mrb_sym sym, mrb_value v) } void +mrb_obj_iv_ifnone(mrb_state *mrb, struct RObject *obj, mrb_sym sym, mrb_value v) +{ + iv_tbl *t = obj->iv; + + if (!t) { + t = obj->iv = iv_new(mrb); + } + else if (iv_get(mrb, t, sym, &v)) { + return; + } + mrb_write_barrier(mrb, (struct RBasic*)obj); + iv_put(mrb, t, sym, v); +} + +void mrb_iv_set(mrb_state *mrb, mrb_value obj, mrb_sym sym, mrb_value v) { if (obj_iv_p(obj)) { |