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implement identifier=?

This commit is contained in:
Yuichi Nishiwaki 2014-09-04 18:43:12 +09:00
parent 2a347847ae
commit 14e7fd4e98
2 changed files with 33 additions and 2 deletions
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2
gc.c
View File

@ -2,8 +2,6 @@
* See Copyright Notice in picrin.h
*/
#include <stdlib.h>
#include "picrin.h"
#include "picrin/gc.h"
#include "picrin/pair.h"

33
macro.c
View File

@ -404,6 +404,24 @@ pic_identifier_p(pic_state *pic, pic_value obj)
return pic_sym_p(obj) && ! pic_interned_p(pic, pic_sym(obj));
}
bool
pic_identifier_eq_p(pic_state *pic, struct pic_senv *env1, pic_sym sym1, struct pic_senv *env2, pic_sym sym2)
{
pic_sym a, b;
a = make_identifier(pic, sym1, env1);
if (a != make_identifier(pic, sym1, env1)) {
a = sym1;
}
b = make_identifier(pic, sym2, env2);
if (b != make_identifier(pic, sym2, env2)) {
b = sym2;
}
return pic_eq_p(pic_sym_value(a), pic_sym_value(b));
}
static pic_value
pic_macro_identifier_p(pic_state *pic)
{
@ -427,9 +445,24 @@ pic_macro_make_identifier(pic_state *pic)
return pic_sym_value(make_identifier(pic, sym, pic_senv_ptr(obj)));
}
static pic_value
pic_macro_identifier_eq_p(pic_state *pic)
{
pic_sym sym1, sym2;
pic_value env1, env2;
pic_get_args(pic, "omom", &env1, &sym1, &env2, &sym2);
pic_assert_type(pic, env1, senv);
pic_assert_type(pic, env2, senv);
return pic_bool_value(pic_identifier_eq_p(pic, pic_senv_ptr(env1), sym1, pic_senv_ptr(env2), sym2));
}
void
pic_init_macro(pic_state *pic)
{
pic_defun(pic, "identifier?", pic_macro_identifier_p);
pic_defun(pic, "identifier=?", pic_macro_identifier_eq_p);
pic_defun(pic, "make-identifier", pic_macro_make_identifier);
}