127 lines
2.6 KiB
C
127 lines
2.6 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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void
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pic_irep_incref(pic_state PIC_UNUSED(*pic), struct pic_irep *irep)
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{
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irep->refc++;
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}
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void
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pic_irep_decref(pic_state *pic, struct pic_irep *irep)
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{
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size_t i;
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if (--irep->refc == 0) {
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pic_free(pic, irep->u.s.code);
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pic_free(pic, irep->u.s.ints);
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pic_free(pic, irep->pool);
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/* unchain before decref children ireps */
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irep->list.prev->next = irep->list.next;
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irep->list.next->prev = irep->list.prev;
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for (i = 0; i < irep->nirep; ++i) {
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pic_irep_decref(pic, irep->u.s.irep[i].i);
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}
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pic_free(pic, irep->u.s.irep);
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pic_free(pic, irep);
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}
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}
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struct pic_proc *
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pic_make_proc(pic_state *pic, pic_func_t func)
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{
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struct pic_proc *proc;
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proc = (struct pic_proc *)pic_obj_alloc(pic, sizeof(struct pic_proc), PIC_TT_PROC);
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proc->tag = PIC_PROC_TAG_FUNC;
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proc->u.f.func = func;
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proc->u.f.env = NULL;
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return proc;
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}
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struct pic_proc *
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pic_make_proc_irep(pic_state *pic, struct pic_irep *irep, struct pic_context *cxt)
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{
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struct pic_proc *proc;
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proc = (struct pic_proc *)pic_obj_alloc(pic, sizeof(struct pic_proc), PIC_TT_PROC);
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proc->tag = PIC_PROC_TAG_IREP;
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proc->u.i.irep = irep;
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proc->u.i.cxt = cxt;
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pic_irep_incref(pic, irep);
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return proc;
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}
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struct pic_dict *
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pic_proc_env(pic_state *pic, struct pic_proc *proc)
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{
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assert(pic_proc_func_p(proc));
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if (! proc->u.f.env) {
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proc->u.f.env = pic_make_dict(pic);
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}
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return proc->u.f.env;
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}
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bool
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pic_proc_env_has(pic_state *pic, struct pic_proc *proc, const char *key)
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{
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return pic_dict_has(pic, pic_proc_env(pic, proc), pic_intern(pic, key));
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}
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pic_value
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pic_proc_env_ref(pic_state *pic, struct pic_proc *proc, const char *key)
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{
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return pic_dict_ref(pic, pic_proc_env(pic, proc), pic_intern(pic, key));
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}
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void
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pic_proc_env_set(pic_state *pic, struct pic_proc *proc, const char *key, pic_value val)
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{
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pic_dict_set(pic, pic_proc_env(pic, proc), pic_intern(pic, key), val);
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}
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static pic_value
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pic_proc_proc_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_proc_p(v));
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}
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static pic_value
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pic_proc_apply(pic_state *pic)
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{
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struct pic_proc *proc;
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pic_value *args;
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int argc;
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pic_value arg_list;
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pic_get_args(pic, "l*", &proc, &argc, &args);
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if (argc == 0) {
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pic_errorf(pic, "apply: wrong number of arguments");
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}
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arg_list = args[--argc];
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while (argc--) {
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arg_list = pic_cons(pic, args[argc], arg_list);
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}
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return pic_apply_trampoline_list(pic, proc, arg_list);
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}
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void
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pic_init_proc(pic_state *pic)
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{
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pic_defun(pic, "procedure?", pic_proc_proc_p);
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pic_defun(pic, "apply", pic_proc_apply);
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}
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