112 lines
4 KiB
C++
112 lines
4 KiB
C++
// Copyright (c) 2013 GitHub, Inc.
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// Use of this source code is governed by the MIT license that can be
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// found in the LICENSE file.
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#include <string>
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#include <utility>
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#include "atom/common/api/atom_api_key_weak_map.h"
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#include "atom/common/api/remote_callback_freer.h"
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#include "atom/common/api/remote_object_freer.h"
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#include "atom/common/native_mate_converters/content_converter.h"
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#include "atom/common/node_includes.h"
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#include "base/hash.h"
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#include "native_mate/dictionary.h"
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#include "v8/include/v8-profiler.h"
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namespace std {
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// The hash function used by DoubleIDWeakMap.
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template <typename Type1, typename Type2>
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struct hash<std::pair<Type1, Type2>> {
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std::size_t operator()(std::pair<Type1, Type2> value) const {
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return base::HashInts<Type1, Type2>(value.first, value.second);
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}
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};
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} // namespace std
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namespace mate {
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template<typename Type1, typename Type2>
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struct Converter<std::pair<Type1, Type2>> {
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static bool FromV8(v8::Isolate* isolate,
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v8::Local<v8::Value> val,
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std::pair<Type1, Type2>* out) {
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if (!val->IsArray())
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return false;
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v8::Local<v8::Array> array(v8::Local<v8::Array>::Cast(val));
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if (array->Length() != 2)
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return false;
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return Converter<Type1>::FromV8(isolate, array->Get(0), &out->first) &&
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Converter<Type2>::FromV8(isolate, array->Get(1), &out->second);
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}
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};
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} // namespace mate
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namespace {
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v8::Local<v8::Value> GetHiddenValue(v8::Isolate* isolate,
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v8::Local<v8::Object> object,
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v8::Local<v8::String> key) {
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v8::Local<v8::Context> context = isolate->GetCurrentContext();
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v8::Local<v8::Private> privateKey = v8::Private::ForApi(isolate, key);
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v8::Local<v8::Value> value;
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v8::Maybe<bool> result = object->HasPrivate(context, privateKey);
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if (!(result.IsJust() && result.FromJust()))
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return v8::Local<v8::Value>();
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if (object->GetPrivate(context, privateKey).ToLocal(&value))
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return value;
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return v8::Local<v8::Value>();
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}
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void SetHiddenValue(v8::Isolate* isolate,
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v8::Local<v8::Object> object,
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v8::Local<v8::String> key,
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v8::Local<v8::Value> value) {
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if (value.IsEmpty())
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return;
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v8::Local<v8::Context> context = isolate->GetCurrentContext();
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v8::Local<v8::Private> privateKey = v8::Private::ForApi(isolate, key);
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object->SetPrivate(context, privateKey, value);
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}
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void DeleteHiddenValue(v8::Isolate* isolate,
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v8::Local<v8::Object> object,
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v8::Local<v8::String> key) {
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v8::Local<v8::Context> context = isolate->GetCurrentContext();
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v8::Local<v8::Private> privateKey = v8::Private::ForApi(isolate, key);
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// Actually deleting the value would make force the object into
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// dictionary mode which is unnecessarily slow. Instead, we replace
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// the hidden value with "undefined".
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object->SetPrivate(context, privateKey, v8::Undefined(isolate));
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}
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int32_t GetObjectHash(v8::Local<v8::Object> object) {
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return object->GetIdentityHash();
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}
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void TakeHeapSnapshot(v8::Isolate* isolate) {
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isolate->GetHeapProfiler()->TakeHeapSnapshot();
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}
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void Initialize(v8::Local<v8::Object> exports, v8::Local<v8::Value> unused,
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v8::Local<v8::Context> context, void* priv) {
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mate::Dictionary dict(context->GetIsolate(), exports);
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dict.SetMethod("getHiddenValue", &GetHiddenValue);
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dict.SetMethod("setHiddenValue", &SetHiddenValue);
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dict.SetMethod("deleteHiddenValue", &DeleteHiddenValue);
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dict.SetMethod("getObjectHash", &GetObjectHash);
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dict.SetMethod("takeHeapSnapshot", &TakeHeapSnapshot);
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dict.SetMethod("setRemoteCallbackFreer", &atom::RemoteCallbackFreer::BindTo);
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dict.SetMethod("setRemoteObjectFreer", &atom::RemoteObjectFreer::BindTo);
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dict.SetMethod("createIDWeakMap", &atom::api::KeyWeakMap<int32_t>::Create);
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dict.SetMethod("createDoubleIDWeakMap",
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&atom::api::KeyWeakMap<std::pair<int32_t, int32_t>>::Create);
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}
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} // namespace
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NODE_MODULE_CONTEXT_AWARE_BUILTIN(atom_common_v8_util, Initialize)
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