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add pic_for_each macro

This commit is contained in:
Yuichi Nishiwaki 2014-02-01 16:04:57 +09:00
parent 47f4060086
commit a4a63314a9
1 changed files with 8 additions and 0 deletions
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8
include/picrin/pair.h
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@ -18,6 +18,14 @@ pic_value pic_list(pic_state *, size_t, ...);
pic_value pic_list_from_array(pic_state *, size_t, pic_value *);
pic_value pic_make_list(pic_state *, int, pic_value);
#define PIC_FOR_EACH_HELPER(var, tmp, list) \
for (pic_value tmp = (list); \
pic_nil_p(tmp) ? false : ((var = pic_car(pic, tmp)), true); \
tmp = pic_cdr(pic, tmp))
#define pic_for_each(var, list) \
PIC_FOR_EACH_HELPER(var, GENSYM(pic_for_each_tmp__), list) \
int pic_length(pic_state *, pic_value);
pic_value pic_reverse(pic_state *, pic_value);
pic_value pic_append(pic_state *, pic_value, pic_value);