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add make_escape

This commit is contained in:
Yuichi Nishiwaki 2014-09-24 14:57:49 +09:00
parent 951af56540
commit 07f24db66f
1 changed files with 18 additions and 11 deletions
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29
cont.c
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@ -109,10 +109,26 @@ escape_call(pic_state *pic)
load_point(pic, e->data);
}
static struct pic_proc *
make_escape(pic_state *pic, struct pic_escape *escape)
{
static const pic_data_type escape_type = { "escape", pic_free, NULL };
struct pic_proc *cont;
struct pic_data *e;
cont = pic_make_proc(pic, escape_call, "<escape-procedure>");
e = pic_data_alloc(pic, &escape_type, escape);
/* save the escape continuation in proc */
pic_attr_set(pic, cont, "@@escape", pic_obj_value(e));
return cont;
}
pic_value
pic_escape(pic_state *pic, struct pic_proc *proc)
{
static const pic_data_type escape_type = { "escape", pic_free, NULL };
struct pic_escape *escape;
escape = pic_alloc(pic, sizeof(struct pic_escape));
@ -121,18 +137,9 @@ pic_escape(pic_state *pic, struct pic_proc *proc)
return pic_values_by_list(pic, escape->results);
}
else {
struct pic_proc *c;
pic_value val;
struct pic_data *e;
c = pic_make_proc(pic, escape_call, "<escape-procedure>");
e = pic_data_alloc(pic, &escape_type, escape);
/* save the escape continuation in proc */
pic_attr_set(pic, c, "@@escape", pic_obj_value(e));
val = pic_apply1(pic, proc, pic_obj_value(c));
val = pic_apply1(pic, proc, pic_obj_value(make_escape(pic, escape)));
escape->valid = false;