87 lines
1.7 KiB
C
87 lines
1.7 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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#include "picrin/proc.h"
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#include "picrin/irep.h"
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struct pic_proc *
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pic_make_proc(pic_state *pic, pic_func_t func, const char *name)
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{
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struct pic_proc *proc;
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assert(name != NULL);
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proc = (struct pic_proc *)pic_obj_alloc(pic, sizeof(struct pic_proc), PIC_TT_PROC);
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proc->kind = PIC_PROC_KIND_FUNC;
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proc->u.func.f = func;
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proc->u.func.name = pic_intern_cstr(pic, name);
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proc->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_env *env)
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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->kind = PIC_PROC_KIND_IREP;
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proc->u.irep = irep;
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proc->env = env;
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return proc;
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}
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pic_sym
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pic_proc_name(struct pic_proc *proc)
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{
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switch (proc->kind) {
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case PIC_PROC_KIND_FUNC:
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return proc->u.func.name;
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case PIC_PROC_KIND_IREP:
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return proc->u.irep->name;
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}
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PIC_UNREACHABLE();
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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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size_t 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(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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