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dont consume arena in pic_append

This commit is contained in:
Yuichi Nishiwaki 2014-02-11 16:22:17 +09:00
parent 93e7a1cf32
commit c2a1ea6748
1 changed files with 9 additions and 9 deletions
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18
src/pair.c
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@ -138,17 +138,17 @@ pic_value
pic_append(pic_state *pic, pic_value xs, pic_value ys) pic_append(pic_state *pic, pic_value xs, pic_value ys)
{ {
int ai = pic_gc_arena_preserve(pic); int ai = pic_gc_arena_preserve(pic);
pic_value x;
if (pic_nil_p(xs)) { xs = pic_reverse(pic, xs);
return ys; pic_for_each (x, xs) {
} ys = pic_cons(pic, x, ys);
else {
xs = pic_cons(pic, pic_car(pic, xs), pic_append(pic, pic_cdr(pic, xs), ys));
}
pic_gc_arena_restore(pic, ai); pic_gc_arena_restore(pic, ai);
pic_gc_protect(pic, xs); pic_gc_protect(pic, xs);
return xs; pic_gc_protect(pic, ys);
}
return ys;
} }
pic_value pic_value