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#include "mruby.h"
#include "mruby/proc.h"
#include "mruby/array.h"
#include "mruby/string.h"
#include "mruby/debug.h"
struct RProc *
mrb_proc_new_cfunc_with_env(mrb_state *mrb, mrb_func_t f, mrb_int argc, const mrb_value *argv)
{
struct RProc *p;
struct REnv *e;
int ai, i;
p = mrb_proc_new_cfunc(mrb, f);
ai = mrb_gc_arena_save(mrb);
e = (struct REnv*)mrb_obj_alloc(mrb, MRB_TT_ENV, NULL);
p->env = e;
mrb_gc_arena_restore(mrb, ai);
MRB_ENV_UNSHARE_STACK(e);
MRB_ENV_STACK_LEN(e) = argc;
e->stack = (mrb_value*)mrb_malloc(mrb, sizeof(mrb_value) * argc);
for (i = 0; i < argc; ++i) {
e->stack[i] = argv[i];
}
return p;
}
mrb_value
mrb_cfunc_env_get(mrb_state *mrb, mrb_int idx)
{
struct RProc *p = mrb->c->ci->proc;
struct REnv *e = p->env;
if (!MRB_PROC_CFUNC_P(p)) {
mrb_raise(mrb, E_TYPE_ERROR, "Can't get cfunc env from non-cfunc proc.");
}
if (!e) {
mrb_raise(mrb, E_TYPE_ERROR, "Can't get cfunc env from cfunc Proc without REnv.");
}
if (idx < 0 || MRB_ENV_STACK_LEN(e) <= idx) {
mrb_raisef(mrb, E_INDEX_ERROR, "Env index out of range: %S (expected: 0 <= index < %S)",
mrb_fixnum_value(idx), mrb_fixnum_value(MRB_ENV_STACK_LEN(e)));
}
return e->stack[idx];
}
static mrb_value
mrb_proc_lambda(mrb_state *mrb, mrb_value self)
{
struct RProc *p = mrb_proc_ptr(self);
return mrb_bool_value(MRB_PROC_STRICT_P(p));
}
static mrb_value
mrb_proc_source_location(mrb_state *mrb, mrb_value self)
{
struct RProc *p = mrb_proc_ptr(self);
if (MRB_PROC_CFUNC_P(p)) {
return mrb_nil_value();
}
else {
mrb_irep *irep = p->body.irep;
int32_t line;
const char *filename;
filename = mrb_debug_get_filename(irep, 0);
line = mrb_debug_get_line(irep, 0);
return (!filename && line == -1)? mrb_nil_value()
: mrb_assoc_new(mrb, mrb_str_new_cstr(mrb, filename), mrb_fixnum_value(line));
}
}
static mrb_value
mrb_proc_inspect(mrb_state *mrb, mrb_value self)
{
struct RProc *p = mrb_proc_ptr(self);
mrb_value str = mrb_str_new_lit(mrb, "#<Proc:");
mrb_str_concat(mrb, str, mrb_ptr_to_str(mrb, mrb_cptr(self)));
if (!MRB_PROC_CFUNC_P(p)) {
mrb_irep *irep = p->body.irep;
mrb_str_cat_lit(mrb, str, "@");
if (irep->filename) {
mrb_str_cat_cstr(mrb, str, irep->filename);
}
else {
mrb_str_cat_lit(mrb, str, "-");
}
mrb_str_cat_lit(mrb, str, ":");
if (irep->lines) {
mrb_str_append(mrb, str, mrb_fixnum_value(*irep->lines));
}
else {
mrb_str_cat_lit(mrb, str, "-");
}
}
if (MRB_PROC_STRICT_P(p)) {
mrb_str_cat_lit(mrb, str, " (lambda)");
}
mrb_str_cat_lit(mrb, str, ">");
return str;
}
static mrb_value
mrb_kernel_proc(mrb_state *mrb, mrb_value self)
{
mrb_value blk;
mrb_get_args(mrb, "&", &blk);
if (mrb_nil_p(blk)) {
mrb_raise(mrb, E_ARGUMENT_ERROR, "tried to create Proc object without a block");
}
return blk;
}
void
mrb_mruby_proc_ext_gem_init(mrb_state* mrb)
{
struct RClass *p = mrb->proc_class;
mrb_define_method(mrb, p, "lambda?", mrb_proc_lambda, MRB_ARGS_NONE());
mrb_define_method(mrb, p, "source_location", mrb_proc_source_location, MRB_ARGS_NONE());
mrb_define_method(mrb, p, "to_s", mrb_proc_inspect, MRB_ARGS_NONE());
mrb_define_method(mrb, p, "inspect", mrb_proc_inspect, MRB_ARGS_NONE());
mrb_define_class_method(mrb, mrb->kernel_module, "proc", mrb_kernel_proc, MRB_ARGS_NONE());
mrb_define_method(mrb, mrb->kernel_module, "proc", mrb_kernel_proc, MRB_ARGS_NONE());
}
void
mrb_mruby_proc_ext_gem_final(mrb_state* mrb)
{
}
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