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A class/module name is now defined for meta programing

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This commit is contained in:
dearblue
2018-09-06 00:09:49 +09:00
parent 2a24b40d30
commit 9b0ef58a48
1 changed files with 33 additions and 0 deletions
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src/variable.c
+33
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@@ -344,6 +344,8 @@ mrb_iv_get(mrb_state *mrb, mrb_value obj, mrb_sym sym)
return mrb_nil_value();
}
static inline void assign_class_name(mrb_state *mrb, struct RObject *obj, mrb_sym sym, mrb_value v);
MRB_API void
mrb_obj_iv_set(mrb_state *mrb, struct RObject *obj, mrb_sym sym, mrb_value v)
{
@@ -352,6 +354,7 @@ mrb_obj_iv_set(mrb_state *mrb, struct RObject *obj, mrb_sym sym, mrb_value v)
if (MRB_FROZEN_P(obj)) {
mrb_raisef(mrb, E_FROZEN_ERROR, "can't modify frozen %S", mrb_obj_value(obj));
}
assign_class_name(mrb, obj, sym, v);
if (!obj->iv) {
obj->iv = iv_new(mrb);
}
@@ -360,6 +363,36 @@ mrb_obj_iv_set(mrb_state *mrb, struct RObject *obj, mrb_sym sym, mrb_value v)
mrb_write_barrier(mrb, (struct RBasic*)obj);
}
static inline mrb_bool
is_namespace(enum mrb_vtype tt)
{
return tt == MRB_TT_CLASS || tt == MRB_TT_MODULE ? TRUE : FALSE;
}
static inline void
assign_class_name(mrb_state *mrb, struct RObject *obj, mrb_sym sym, mrb_value v)
{
if (is_namespace(obj->tt) && is_namespace(mrb_type(v)) && ISUPPER(mrb_sym2name(mrb, sym)[0])) {
struct RObject *c = mrb_obj_ptr(v);
mrb_sym id_classname = mrb_intern_lit(mrb, "__classname__");
mrb_value o = mrb_obj_iv_get(mrb, c, id_classname);
if (mrb_nil_p(o)) {
mrb_sym id_outer = mrb_intern_lit(mrb, "__outer__");
o = mrb_obj_iv_get(mrb, c, id_outer);
if (mrb_nil_p(o)) {
if ((struct RClass *)obj == mrb->object_class) {
mrb_obj_iv_set(mrb, c, id_classname, mrb_symbol_value(sym));
}
else {
mrb_obj_iv_set(mrb, c, id_outer, mrb_obj_value(obj));
}
}
}
}
}
MRB_API void
mrb_iv_set(mrb_state *mrb, mrb_value obj, mrb_sym sym, mrb_value v)
{