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/*
** proc.c - Proc class
**
** See Copyright Notice in mruby.h
*/
#include "mruby.h"
#include "mruby/proc.h"
#include "mruby/class.h"
#include "opcode.h"
struct RProc *
mrb_proc_new(mrb_state *mrb, mrb_irep *irep)
{
struct RProc *p;
p = (struct RProc*)mrb_obj_alloc(mrb, MRB_TT_PROC, mrb->proc_class);
p->target_class = (mrb->ci) ? mrb->ci->target_class : 0;
p->body.irep = irep;
p->env = 0;
return p;
}
struct RProc *
mrb_closure_new(mrb_state *mrb, mrb_irep *irep)
{
struct RProc *p = mrb_proc_new(mrb, irep);
struct REnv *e;
if (!mrb->ci->env) {
e = (struct REnv*)mrb_obj_alloc(mrb, MRB_TT_ENV, (struct RClass*)mrb->ci->proc->env);
e->flags= (unsigned int)mrb->ci->proc->body.irep->nlocals;
e->mid = mrb->ci->mid;
e->cioff = mrb->ci - mrb->cibase;
e->stack = mrb->stack;
mrb->ci->env = e;
}
else {
e = mrb->ci->env;
}
p->env = e;
return p;
}
struct RProc *
mrb_proc_new_cfunc(mrb_state *mrb, mrb_func_t func)
{
struct RProc *p;
p = (struct RProc*)mrb_obj_alloc(mrb, MRB_TT_PROC, mrb->proc_class);
p->body.func = func;
p->flags |= MRB_PROC_CFUNC;
return p;
}
void
mrb_proc_copy(struct RProc *a, struct RProc *b)
{
a->flags = b->flags;
a->body = b->body;
a->target_class = b->target_class;
a->env = b->env;
}
static mrb_value
mrb_proc_initialize(mrb_state *mrb, mrb_value self)
{
mrb_value blk;
mrb_get_args(mrb, "&", &blk);
if (mrb_nil_p(blk)) {
/* Calling Proc.new without a block is not implemented yet */
mrb_raise(mrb, E_ARGUMENT_ERROR, "tried to create Proc object without a block");
}
else {
mrb_proc_copy(mrb_proc_ptr(self), mrb_proc_ptr(blk));
}
return self;
}
static mrb_value
mrb_proc_init_copy(mrb_state *mrb, mrb_value self)
{
mrb_value proc;
mrb_get_args(mrb, "o", &proc);
if (mrb_type(proc) != MRB_TT_PROC) {
mrb_raise(mrb, E_ARGUMENT_ERROR, "not a proc");
}
mrb_proc_copy(mrb_proc_ptr(self), mrb_proc_ptr(proc));
return self;
}
int
mrb_proc_cfunc_p(struct RProc *p)
{
return MRB_PROC_CFUNC_P(p);
}
mrb_value
mrb_proc_call_cfunc(mrb_state *mrb, struct RProc *p, mrb_value self)
{
return (p->body.func)(mrb, self);
}
mrb_code*
mrb_proc_iseq(mrb_state *mrb, struct RProc *p)
{
return p->body.irep->iseq;
}
/* 15.3.1.2.6 */
/* 15.3.1.3.27 */
/*
* call-seq:
* lambda { |...| block } -> a_proc
*
* Equivalent to <code>Proc.new</code>, except the resulting Proc objects
* check the number of parameters passed when called.
*/
static mrb_value
proc_lambda(mrb_state *mrb, mrb_value self)
{
mrb_value blk;
struct RProc *p;
mrb_get_args(mrb, "&", &blk);
if (mrb_nil_p(blk)) {
mrb_raise(mrb, E_ARGUMENT_ERROR, "tried to create Proc object without a block");
}
p = mrb_proc_ptr(blk);
if (!MRB_PROC_STRICT_P(p)) {
struct RProc *p2 = (struct RProc*)mrb_obj_alloc(mrb, MRB_TT_PROC, p->c);
mrb_proc_copy(p2, p);
p2->flags |= MRB_PROC_STRICT;
return mrb_obj_value(p2);
}
return blk;
}
void
mrb_init_proc(mrb_state *mrb)
{
struct RProc *m;
mrb_code *call_iseq = (mrb_code *)mrb_malloc(mrb, sizeof(mrb_code));
mrb_irep *call_irep = (mrb_irep *)mrb_calloc(mrb, sizeof(mrb_irep), 1);
if ( call_iseq == NULL || call_irep == NULL )
return;
*call_iseq = MKOP_A(OP_CALL, 0);
call_irep->idx = -1;
call_irep->iseq = call_iseq;
call_irep->ilen = 1;
mrb->proc_class = mrb_define_class(mrb, "Proc", mrb->object_class);
MRB_SET_INSTANCE_TT(mrb->proc_class, MRB_TT_PROC);
mrb_define_method(mrb, mrb->proc_class, "initialize", mrb_proc_initialize, ARGS_NONE());
mrb_define_method(mrb, mrb->proc_class, "initialize_copy", mrb_proc_init_copy, ARGS_REQ(1));
m = mrb_proc_new(mrb, call_irep);
mrb_define_method_raw(mrb, mrb->proc_class, mrb_intern(mrb, "call"), m);
mrb_define_method_raw(mrb, mrb->proc_class, mrb_intern(mrb, "[]"), m);
mrb_define_class_method(mrb, mrb->kernel_module, "lambda", proc_lambda, ARGS_NONE()); /* 15.3.1.2.6 */
mrb_define_method(mrb, mrb->kernel_module, "lambda", proc_lambda, ARGS_NONE()); /* 15.3.1.3.27 */
}
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