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error.c: store error message converted as a string.

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This is controversial since this change alters the `raise` behavior.
Previously, when an object that cannot be converted to a string, it just
ignore message when it's printed (using `Exception#inspect`). But after
this change, `raise` (more precisly `Exception.new`) raises TypeError
exception. I think the new behavior is clearer, more intuitive.
This commit is contained in:
Yukihiro "Matz" Matsumoto
2022-05-06 16:21:39 +09:00
parent d40822b148
commit c3e4ee0bf2
1 changed files with 6 additions and 14 deletions
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src/error.c
+6 -14
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@@ -21,26 +21,18 @@
void
mrb_exc_mesg_set(mrb_state *mrb, struct RException *exc, mrb_value mesg)
{
if (!mrb_immediate_p(mesg)) {
exc->mesg = mrb_obj_ptr(mesg);
mrb_field_write_barrier_value(mrb, (struct RBasic*)exc, mesg);
mrb_iv_remove(mrb, mrb_obj_value(exc), MRB_SYM(mesg));
}
else {
exc->mesg = NULL;
mrb_obj_iv_set(mrb, (struct RObject*)exc, MRB_SYM(mesg), mesg);
if (!mrb_string_p(mesg)) {
mesg = mrb_obj_as_string(mrb, mesg);
}
exc->mesg = mrb_obj_ptr(mesg);
mrb_field_write_barrier_value(mrb, (struct RBasic*)exc, mesg);
}
mrb_value
mrb_exc_mesg_get(mrb_state *mrb, struct RException *exc)
{
if (exc->mesg) {
return mrb_obj_value(exc->mesg);
}
else {
return mrb_obj_iv_get(mrb, (struct RObject*)exc, MRB_SYM(mesg));
}
if (exc->mesg == NULL) return mrb_nil_value();
return mrb_obj_value(exc->mesg);
}
MRB_API mrb_value