50 lines
1.0 KiB
C
50 lines
1.0 KiB
C
#include "picrin.h"
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struct pic_dict *
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pic_attr(pic_state *pic, pic_value obj)
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{
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xh_entry *e;
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if (pic_vtype(obj) != PIC_VTYPE_HEAP) {
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pic_errorf(pic, "attribute: expected heap object, but got immediate value ~s", obj);
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}
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e = xh_get_ptr(&pic->attrs, pic_ptr(obj));
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if (e == NULL) {
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struct pic_dict *dict = pic_make_dict(pic);
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e = xh_put_ptr(&pic->attrs, pic_ptr(obj), &dict);
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assert(dict == xh_val(e, struct pic_dict *));
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}
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return xh_val(e, struct pic_dict *);
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}
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pic_value
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pic_attr_ref(pic_state *pic, pic_value obj, const char *key)
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{
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return pic_dict_ref(pic, pic_attr(pic, obj), pic_intern_cstr(pic, key));
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}
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void
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pic_attr_set(pic_state *pic, pic_value obj, const char *key, pic_value v)
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{
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pic_dict_set(pic, pic_attr(pic, obj), pic_intern_cstr(pic, key), v);
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}
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static pic_value
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pic_attr_attribute(pic_state *pic)
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{
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pic_value obj;
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pic_get_args(pic, "o", &obj);
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return pic_obj_value(pic_attr(pic, obj));
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}
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void
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pic_init_attr(pic_state *pic)
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{
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pic_defun(pic, "attribute", pic_attr_attribute);
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}
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