791 lines
14 KiB
C
791 lines
14 KiB
C
/**
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* See Copyright Notice in picrin.h
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*/
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#include "picrin.h"
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#include "picrin/pair.h"
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pic_value
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pic_cons(pic_state *pic, pic_value car, pic_value cdr)
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{
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struct pic_pair *pair;
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pair = (struct pic_pair *)pic_obj_alloc(pic, sizeof(struct pic_pair), PIC_TT_PAIR);
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pair->car = car;
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pair->cdr = cdr;
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return pic_obj_value(pair);
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}
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void
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pic_set_car(pic_state *pic, pic_value obj, pic_value val)
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{
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struct pic_pair *pair;
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if (! pic_pair_p(obj)) {
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pic_errorf(pic, "pair required");
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}
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pair = pic_pair_ptr(obj);
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pair->car = val;
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}
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void
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pic_set_cdr(pic_state *pic, pic_value obj, pic_value val)
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{
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struct pic_pair *pair;
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if (! pic_pair_p(obj)) {
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pic_errorf(pic, "pair required");
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}
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pair = pic_pair_ptr(obj);
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pair->cdr = val;
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}
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bool
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pic_list_p(pic_value obj)
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{
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pic_value local, rapid;
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int i;
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/* Floyd's cycle-finding algorithm. */
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local = rapid = obj;
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while (true) {
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/* advance rapid fast-forward; runs 2x faster than local */
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for (i = 0; i < 2; ++i) {
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if (pic_pair_p(rapid)) {
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rapid = pic_pair_ptr(rapid)->cdr;
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}
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else {
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return pic_nil_p(rapid);
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}
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}
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/* advance local */
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local = pic_pair_ptr(local)->cdr;
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if (pic_eq_p(local, rapid)) {
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return false;
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}
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}
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}
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pic_value
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pic_list1(pic_state *pic, pic_value obj1)
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{
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return pic_cons(pic, obj1, pic_nil_value());
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}
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pic_value
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pic_list2(pic_state *pic, pic_value obj1, pic_value obj2)
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{
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size_t ai = pic_gc_arena_preserve(pic);
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pic_value val;
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val = pic_cons(pic, obj1, pic_list1(pic, obj2));
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pic_gc_arena_restore(pic, ai);
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pic_gc_protect(pic, val);
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return val;
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}
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pic_value
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pic_list3(pic_state *pic, pic_value obj1, pic_value obj2, pic_value obj3)
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{
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size_t ai = pic_gc_arena_preserve(pic);
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pic_value val;
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val = pic_cons(pic, obj1, pic_list2(pic, obj2, obj3));
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pic_gc_arena_restore(pic, ai);
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pic_gc_protect(pic, val);
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return val;
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}
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pic_value
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pic_list4(pic_state *pic, pic_value obj1, pic_value obj2, pic_value obj3, pic_value obj4)
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{
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size_t ai = pic_gc_arena_preserve(pic);
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pic_value val;
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val = pic_cons(pic, obj1, pic_list3(pic, obj2, obj3, obj4));
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pic_gc_arena_restore(pic, ai);
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pic_gc_protect(pic, val);
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return val;
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}
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pic_value
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pic_list5(pic_state *pic, pic_value obj1, pic_value obj2, pic_value obj3, pic_value obj4, pic_value obj5)
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{
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size_t ai = pic_gc_arena_preserve(pic);
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pic_value val;
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val = pic_cons(pic, obj1, pic_list4(pic, obj2, obj3, obj4, obj5));
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pic_gc_arena_restore(pic, ai);
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pic_gc_protect(pic, val);
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return val;
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}
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pic_value
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pic_list6(pic_state *pic, pic_value obj1, pic_value obj2, pic_value obj3, pic_value obj4, pic_value obj5, pic_value obj6)
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{
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size_t ai = pic_gc_arena_preserve(pic);
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pic_value val;
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val = pic_cons(pic, obj1, pic_list5(pic, obj2, obj3, obj4, obj5, obj6));
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pic_gc_arena_restore(pic, ai);
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pic_gc_protect(pic, val);
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return val;
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}
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pic_value
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pic_list7(pic_state *pic, pic_value obj1, pic_value obj2, pic_value obj3, pic_value obj4, pic_value obj5, pic_value obj6, pic_value obj7)
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{
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size_t ai = pic_gc_arena_preserve(pic);
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pic_value val;
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val = pic_cons(pic, obj1, pic_list6(pic, obj2, obj3, obj4, obj5, obj6, obj7));
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pic_gc_arena_restore(pic, ai);
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pic_gc_protect(pic, val);
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return val;
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}
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pic_value
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pic_list_by_array(pic_state *pic, size_t c, pic_value *vs)
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{
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pic_value v;
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v = pic_nil_value();
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while (c--) {
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v = pic_cons(pic, vs[c], v);
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}
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return v;
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}
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pic_value
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pic_make_list(pic_state *pic, size_t k, pic_value fill)
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{
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pic_value list;
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size_t i;
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list = pic_nil_value();
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for (i = 0; i < k; ++i) {
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list = pic_cons(pic, fill, list);
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}
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return list;
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}
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size_t
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pic_length(pic_state *pic, pic_value obj)
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{
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size_t c = 0;
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if (! pic_list_p(obj)) {
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pic_errorf(pic, "length: expected list, but got ~s", obj);
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}
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while (! pic_nil_p(obj)) {
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obj = pic_cdr(pic, obj);
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++c;
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}
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return c;
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}
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pic_value
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pic_reverse(pic_state *pic, pic_value list)
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{
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size_t ai = pic_gc_arena_preserve(pic);
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pic_value v, acc;
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acc = pic_nil_value();
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pic_for_each(v, list) {
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acc = pic_cons(pic, v, acc);
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pic_gc_arena_restore(pic, ai);
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pic_gc_protect(pic, acc);
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}
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return acc;
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}
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pic_value
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pic_append(pic_state *pic, pic_value xs, pic_value ys)
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{
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size_t ai = pic_gc_arena_preserve(pic);
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pic_value x;
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xs = pic_reverse(pic, xs);
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pic_for_each (x, xs) {
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ys = pic_cons(pic, x, ys);
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pic_gc_arena_restore(pic, ai);
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pic_gc_protect(pic, xs);
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pic_gc_protect(pic, ys);
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}
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return ys;
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}
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pic_value
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pic_memq(pic_state *pic, pic_value key, pic_value list)
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{
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enter:
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if (pic_nil_p(list))
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return pic_false_value();
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if (pic_eq_p(key, pic_car(pic, list)))
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return list;
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list = pic_cdr(pic, list);
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goto enter;
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}
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pic_value
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pic_memv(pic_state *pic, pic_value key, pic_value list)
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{
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enter:
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if (pic_nil_p(list))
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return pic_false_value();
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if (pic_eqv_p(key, pic_car(pic, list)))
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return list;
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list = pic_cdr(pic, list);
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goto enter;
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}
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pic_value
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pic_member(pic_state *pic, pic_value key, pic_value list, struct pic_proc *compar)
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{
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enter:
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if (pic_nil_p(list))
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return pic_false_value();
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if (compar == NULL) {
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if (pic_equal_p(pic, key, pic_car(pic, list)))
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return list;
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} else {
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if (pic_test(pic_apply2(pic, compar, key, pic_car(pic, list))))
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return list;
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}
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list = pic_cdr(pic, list);
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goto enter;
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}
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pic_value
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pic_assq(pic_state *pic, pic_value key, pic_value assoc)
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{
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pic_value cell;
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enter:
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if (pic_nil_p(assoc))
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return pic_false_value();
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cell = pic_car(pic, assoc);
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if (pic_eq_p(key, pic_car(pic, cell)))
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return cell;
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assoc = pic_cdr(pic, assoc);
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goto enter;
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}
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pic_value
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pic_assv(pic_state *pic, pic_value key, pic_value assoc)
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{
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pic_value cell;
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enter:
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if (pic_nil_p(assoc))
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return pic_false_value();
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cell = pic_car(pic, assoc);
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if (pic_eqv_p(key, pic_car(pic, cell)))
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return cell;
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assoc = pic_cdr(pic, assoc);
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goto enter;
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}
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pic_value
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pic_assoc(pic_state *pic, pic_value key, pic_value assoc, struct pic_proc *compar)
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{
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pic_value cell;
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enter:
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if (pic_nil_p(assoc))
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return pic_false_value();
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cell = pic_car(pic, assoc);
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if (compar == NULL) {
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if (pic_equal_p(pic, key, pic_car(pic, cell)))
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return cell;
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} else {
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if (pic_test(pic_apply2(pic, compar, key, pic_car(pic, cell))))
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return cell;
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}
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assoc = pic_cdr(pic, assoc);
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goto enter;
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}
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pic_value
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pic_acons(pic_state *pic, pic_value key, pic_value val, pic_value assoc)
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{
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return pic_cons(pic, pic_cons(pic, key, val), assoc);
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}
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pic_value
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pic_caar(pic_state *pic, pic_value v)
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{
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return pic_car(pic, pic_car(pic, v));
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}
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pic_value
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pic_cadr(pic_state *pic, pic_value v)
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{
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return pic_car(pic, pic_cdr(pic, v));
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}
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pic_value
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pic_cdar(pic_state *pic, pic_value v)
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{
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return pic_cdr(pic, pic_car(pic, v));
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}
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pic_value
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pic_cddr(pic_state *pic, pic_value v)
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{
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return pic_cdr(pic, pic_cdr(pic, v));
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}
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pic_value
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pic_list_tail(pic_state *pic, pic_value list, size_t i)
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{
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while (i-- > 0) {
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list = pic_cdr(pic, list);
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}
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return list;
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}
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pic_value
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pic_list_ref(pic_state *pic, pic_value list, size_t i)
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{
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return pic_car(pic, pic_list_tail(pic, list, i));
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}
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void
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pic_list_set(pic_state *pic, pic_value list, size_t i, pic_value obj)
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{
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pic_pair_ptr(pic_list_tail(pic, list, i))->car = obj;
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}
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pic_value
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pic_list_copy(pic_state *pic, pic_value obj)
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{
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if (pic_pair_p(obj)) {
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return pic_cons(pic, pic_car(pic, obj), pic_list_copy(pic, pic_cdr(pic, obj)));
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}
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else {
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return obj;
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}
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}
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static pic_value
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pic_pair_pair_p(pic_state *pic)
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{
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pic_value v;
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pic_get_args(pic, "o", &v);
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return pic_bool_value(pic_pair_p(v));
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}
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static pic_value
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pic_pair_cons(pic_state *pic)
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{
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pic_value v,w;
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pic_get_args(pic, "oo", &v, &w);
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return pic_cons(pic, v, w);
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}
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static pic_value
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pic_pair_car(pic_state *pic)
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{
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pic_value v;
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pic_get_args(pic, "o", &v);
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return pic_car(pic, v);
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}
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static pic_value
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pic_pair_cdr(pic_state *pic)
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{
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pic_value v;
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pic_get_args(pic, "o", &v);
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return pic_cdr(pic, v);
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}
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static pic_value
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pic_pair_caar(pic_state *pic)
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{
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pic_value v;
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pic_get_args(pic, "o", &v);
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return pic_caar(pic, v);
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}
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static pic_value
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pic_pair_cadr(pic_state *pic)
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{
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pic_value v;
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pic_get_args(pic, "o", &v);
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return pic_cadr(pic, v);
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}
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static pic_value
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pic_pair_cdar(pic_state *pic)
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{
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pic_value v;
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pic_get_args(pic, "o", &v);
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return pic_cdar(pic, v);
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}
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static pic_value
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pic_pair_cddr(pic_state *pic)
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{
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pic_value v;
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pic_get_args(pic, "o", &v);
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return pic_cddr(pic, v);
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}
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static pic_value
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pic_pair_set_car(pic_state *pic)
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{
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pic_value v,w;
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pic_get_args(pic, "oo", &v, &w);
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pic_set_car(pic, v, w);
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return pic_none_value();
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}
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static pic_value
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pic_pair_set_cdr(pic_state *pic)
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{
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pic_value v,w;
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pic_get_args(pic, "oo", &v, &w);
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pic_set_cdr(pic, v, w);
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return pic_none_value();
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}
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static pic_value
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pic_pair_null_p(pic_state *pic)
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{
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pic_value v;
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pic_get_args(pic, "o", &v);
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return pic_bool_value(pic_nil_p(v));
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}
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static pic_value
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pic_pair_list_p(pic_state *pic)
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{
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pic_value v;
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pic_get_args(pic, "o", &v);
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return pic_bool_value(pic_list_p(v));
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}
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static pic_value
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pic_pair_make_list(pic_state *pic)
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{
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size_t i;
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pic_value fill = pic_none_value();
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pic_get_args(pic, "k|o", &i, &fill);
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return pic_make_list(pic, i, fill);
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}
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static pic_value
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pic_pair_list(pic_state *pic)
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{
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size_t argc;
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pic_value *argv;
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pic_get_args(pic, "*", &argc, &argv);
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return pic_list_by_array(pic, argc, argv);
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}
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static pic_value
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pic_pair_length(pic_state *pic)
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{
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pic_value list;
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pic_get_args(pic, "o", &list);
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return pic_size_value(pic_length(pic, list));
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}
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static pic_value
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pic_pair_append(pic_state *pic)
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{
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size_t argc;
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pic_value *args, list;
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pic_get_args(pic, "*", &argc, &args);
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if (argc == 0) {
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return pic_nil_value();
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}
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list = args[--argc];
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while (argc-- > 0) {
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list = pic_append(pic, args[argc], list);
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}
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return list;
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}
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static pic_value
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pic_pair_reverse(pic_state *pic)
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{
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pic_value list;
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pic_get_args(pic, "o", &list);
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return pic_reverse(pic, list);
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}
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static pic_value
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pic_pair_list_tail(pic_state *pic)
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{
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pic_value list;
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size_t i;
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pic_get_args(pic, "ok", &list, &i);
|
|
|
|
return pic_list_tail(pic, list, i);
|
|
}
|
|
|
|
static pic_value
|
|
pic_pair_list_ref(pic_state *pic)
|
|
{
|
|
pic_value list;
|
|
size_t i;
|
|
|
|
pic_get_args(pic, "ok", &list, &i);
|
|
|
|
return pic_list_ref(pic, list, i);
|
|
}
|
|
|
|
static pic_value
|
|
pic_pair_list_set(pic_state *pic)
|
|
{
|
|
pic_value list, obj;
|
|
size_t i;
|
|
|
|
pic_get_args(pic, "oko", &list, &i, &obj);
|
|
|
|
pic_list_set(pic, list, i, obj);
|
|
|
|
return pic_none_value();
|
|
}
|
|
|
|
static pic_value
|
|
pic_pair_list_copy(pic_state *pic)
|
|
{
|
|
pic_value obj;
|
|
|
|
pic_get_args(pic, "o", &obj);
|
|
|
|
return pic_list_copy(pic, obj);
|
|
}
|
|
|
|
static pic_value
|
|
pic_pair_map(pic_state *pic)
|
|
{
|
|
struct pic_proc *proc;
|
|
size_t argc, i;
|
|
pic_value *args;
|
|
pic_value arg, ret;
|
|
|
|
pic_get_args(pic, "l*", &proc, &argc, &args);
|
|
|
|
ret = pic_nil_value();
|
|
do {
|
|
arg = pic_nil_value();
|
|
for (i = 0; i < argc; ++i) {
|
|
if (! pic_pair_p(args[i])) {
|
|
break;
|
|
}
|
|
pic_push(pic, pic_car(pic, args[i]), arg);
|
|
args[i] = pic_cdr(pic, args[i]);
|
|
}
|
|
if (i != argc) {
|
|
break;
|
|
}
|
|
pic_push(pic, pic_apply(pic, proc, pic_reverse(pic, arg)), ret);
|
|
} while (1);
|
|
|
|
return pic_reverse(pic, ret);
|
|
}
|
|
|
|
static pic_value
|
|
pic_pair_for_each(pic_state *pic)
|
|
{
|
|
struct pic_proc *proc;
|
|
size_t argc, i;
|
|
pic_value *args;
|
|
pic_value arg;
|
|
|
|
pic_get_args(pic, "l*", &proc, &argc, &args);
|
|
|
|
do {
|
|
arg = pic_nil_value();
|
|
for (i = 0; i < argc; ++i) {
|
|
if (! pic_pair_p(args[i])) {
|
|
break;
|
|
}
|
|
pic_push(pic, pic_car(pic, args[i]), arg);
|
|
args[i] = pic_cdr(pic, args[i]);
|
|
}
|
|
if (i != argc) {
|
|
break;
|
|
}
|
|
pic_apply(pic, proc, pic_reverse(pic, arg));
|
|
} while (1);
|
|
|
|
return pic_none_value();
|
|
}
|
|
|
|
static pic_value
|
|
pic_pair_memq(pic_state *pic)
|
|
{
|
|
pic_value key, list;
|
|
|
|
pic_get_args(pic, "oo", &key, &list);
|
|
|
|
return pic_memq(pic, key, list);
|
|
}
|
|
|
|
static pic_value
|
|
pic_pair_memv(pic_state *pic)
|
|
{
|
|
pic_value key, list;
|
|
|
|
pic_get_args(pic, "oo", &key, &list);
|
|
|
|
return pic_memv(pic, key, list);
|
|
}
|
|
|
|
static pic_value
|
|
pic_pair_member(pic_state *pic)
|
|
{
|
|
struct pic_proc *proc = NULL;
|
|
pic_value key, list;
|
|
|
|
pic_get_args(pic, "oo|l", &key, &list, &proc);
|
|
|
|
return pic_member(pic, key, list, proc);
|
|
}
|
|
|
|
static pic_value
|
|
pic_pair_assq(pic_state *pic)
|
|
{
|
|
pic_value key, list;
|
|
|
|
pic_get_args(pic, "oo", &key, &list);
|
|
|
|
return pic_assq(pic, key, list);
|
|
}
|
|
|
|
static pic_value
|
|
pic_pair_assv(pic_state *pic)
|
|
{
|
|
pic_value key, list;
|
|
|
|
pic_get_args(pic, "oo", &key, &list);
|
|
|
|
return pic_assv(pic, key, list);
|
|
}
|
|
|
|
static pic_value
|
|
pic_pair_assoc(pic_state *pic)
|
|
{
|
|
struct pic_proc *proc = NULL;
|
|
pic_value key, list;
|
|
|
|
pic_get_args(pic, "oo|l", &key, &list, &proc);
|
|
|
|
return pic_assoc(pic, key, list, proc);
|
|
}
|
|
|
|
void
|
|
pic_init_pair(pic_state *pic)
|
|
{
|
|
pic_defun(pic, "pair?", pic_pair_pair_p);
|
|
pic_defun(pic, "cons", pic_pair_cons);
|
|
pic_defun(pic, "car", pic_pair_car);
|
|
pic_defun(pic, "cdr", pic_pair_cdr);
|
|
pic_defun(pic, "set-car!", pic_pair_set_car);
|
|
pic_defun(pic, "set-cdr!", pic_pair_set_cdr);
|
|
pic_defun(pic, "null?", pic_pair_null_p);
|
|
|
|
pic_defun(pic, "caar", pic_pair_caar);
|
|
pic_defun(pic, "cadr", pic_pair_cadr);
|
|
pic_defun(pic, "cdar", pic_pair_cdar);
|
|
pic_defun(pic, "cddr", pic_pair_cddr);
|
|
pic_defun(pic, "list?", pic_pair_list_p);
|
|
pic_defun(pic, "make-list", pic_pair_make_list);
|
|
pic_defun(pic, "list", pic_pair_list);
|
|
pic_defun(pic, "length", pic_pair_length);
|
|
pic_defun(pic, "append", pic_pair_append);
|
|
pic_defun(pic, "reverse", pic_pair_reverse);
|
|
pic_defun(pic, "list-tail", pic_pair_list_tail);
|
|
pic_defun(pic, "list-ref", pic_pair_list_ref);
|
|
pic_defun(pic, "list-set!", pic_pair_list_set);
|
|
pic_defun(pic, "list-copy", pic_pair_list_copy);
|
|
pic_defun(pic, "map", pic_pair_map);
|
|
pic_defun(pic, "for-each", pic_pair_for_each);
|
|
pic_defun(pic, "memq", pic_pair_memq);
|
|
pic_defun(pic, "memv", pic_pair_memv);
|
|
pic_defun(pic, "member", pic_pair_member);
|
|
pic_defun(pic, "assq", pic_pair_assq);
|
|
pic_defun(pic, "assv", pic_pair_assv);
|
|
pic_defun(pic, "assoc", pic_pair_assoc);
|
|
}
|