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reserve global variables with names in the form of __FOO__

This commit is contained in:
Yuichi Nishiwaki 2017-05-13 02:01:23 +09:00
parent 716629f761
commit 247987f09d
1 changed files with 8 additions and 10 deletions
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18
lib/state.c
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@ -13,12 +13,9 @@ static pic_value pic_state_features(pic_state *);
void
pic_add_feature(pic_state *pic, const char *feature)
{
pic_value f = pic_ref(pic, "features");
pic_value f = pic_ref(pic, "__picrin_features__");
if (! (pic_proc_func_p(pic, f) && proc_ptr(pic, f)->u.func == pic_state_features)) {
pic_error(pic, "the features procedure is overwritten", 0);
}
pic_push(pic, pic_intern_cstr(pic, feature), proc_ptr(pic, f)->env->regs[0]);
pic_set(pic, "__picrin_features__", pic_cons(pic, pic_intern_cstr(pic, feature), f));
}
void pic_init_bool(pic_state *);
@ -50,6 +47,7 @@ pic_init_core(pic_state *pic)
{
size_t ai = pic_enter(pic);
pic_define(pic, "__picrin_features__", pic_nil_value(pic));
pic_init_bool(pic); DONE;
pic_init_pair(pic); DONE;
pic_init_number(pic); DONE;
@ -341,7 +339,7 @@ pic_state_features(pic_state *pic)
{
pic_get_args(pic, "");
return pic_closure_ref(pic, 0);
return pic_ref(pic, "__picrin_features__");
}
static pic_value
@ -368,10 +366,6 @@ pic_state_error(pic_state *pic)
void
pic_init_state(pic_state *pic)
{
pic_define(pic, "features", pic_lambda(pic, pic_state_features, 1, pic_nil_value(pic)));
pic_defun(pic, "global-objects", pic_state_global_objects);
pic_defun(pic, "error", pic_state_error);
pic_add_feature(pic, "picrin");
#if __STDC_IEC_559__
@ -425,4 +419,8 @@ pic_init_state(pic_state *pic)
pic_add_feature(pic, "big-endian");
# endif
#endif
pic_defun(pic, "features", pic_state_features);
pic_defun(pic, "global-objects", pic_state_global_objects);
pic_defun(pic, "error", pic_state_error);
}