mirror of
https://github.com/rubyjs/therubyracer
synced 2023-03-27 23:21:42 -04:00
47 lines
1 KiB
C++
47 lines
1 KiB
C++
#include "rr.h"
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namespace rr {
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VALUE Backref::Storage;
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ID Backref::_new;
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ID Backref::object;
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void Backref::Init() {
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Storage = rb_eval_string("V8::Weak::Ref");
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rb_gc_register_address(&Storage);
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_new = rb_intern("new");
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object = rb_intern("object");
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}
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Backref::Backref(VALUE initial) {
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set(initial);
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rb_gc_register_address(&storage);
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}
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Backref::~Backref() {
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rb_gc_unregister_address(&storage);
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}
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VALUE Backref::set(VALUE data) {
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this->storage = rb_funcall(Storage, _new, 1, data);
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return data;
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}
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VALUE Backref::get() {
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return rb_funcall(storage, object, 0);
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}
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v8::Handle<v8::External> Backref::toExternal(v8::Isolate* isolate) {
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v8::Local<v8::External> wrapper = v8::External::New(isolate, this);
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v8::Persistent<v8::External>(isolate, wrapper).SetWeak(this, &release);
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return wrapper;
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}
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void Backref::release(const v8::WeakCallbackData<v8::External, Backref>& data) {
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// The Persistent handle is disposed of automatically.
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delete data.GetParameter();
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}
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}
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