electron/atom/common/api/atom_api_v8_util.cc

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// Copyright (c) 2013 GitHub, Inc.
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// Use of this source code is governed by the MIT license that can be
// found in the LICENSE file.
#include <string>
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#include "atom/common/api/atom_api_key_weak_map.h"
#include "atom/common/api/remote_callback_freer.h"
#include "atom/common/api/remote_object_freer.h"
#include "atom/common/native_mate_converters/content_converter.h"
#include "atom/common/node_includes.h"
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#include "native_mate/dictionary.h"
#include "v8/include/v8-profiler.h"
namespace {
v8::Local<v8::Value> GetHiddenValue(v8::Isolate* isolate,
v8::Local<v8::Object> object,
v8::Local<v8::String> key) {
v8::Local<v8::Context> context = isolate->GetCurrentContext();
v8::Local<v8::Private> privateKey = v8::Private::ForApi(isolate, key);
v8::Local<v8::Value> value;
v8::Maybe<bool> result = object->HasPrivate(context, privateKey);
if (!(result.IsJust() && result.FromJust()))
return v8::Local<v8::Value>();
if (object->GetPrivate(context, privateKey).ToLocal(&value))
return value;
return v8::Local<v8::Value>();
}
void SetHiddenValue(v8::Isolate* isolate,
v8::Local<v8::Object> object,
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v8::Local<v8::String> key,
v8::Local<v8::Value> value) {
if (value.IsEmpty())
return;
v8::Local<v8::Context> context = isolate->GetCurrentContext();
v8::Local<v8::Private> privateKey = v8::Private::ForApi(isolate, key);
object->SetPrivate(context, privateKey, value);
}
void DeleteHiddenValue(v8::Isolate* isolate,
v8::Local<v8::Object> object,
v8::Local<v8::String> key) {
v8::Local<v8::Context> context = isolate->GetCurrentContext();
v8::Local<v8::Private> privateKey = v8::Private::ForApi(isolate, key);
// Actually deleting the value would make force the object into
// dictionary mode which is unnecessarily slow. Instead, we replace
// the hidden value with "undefined".
object->SetPrivate(context, privateKey, v8::Undefined(isolate));
}
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int32_t GetObjectHash(v8::Local<v8::Object> object) {
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return object->GetIdentityHash();
}
void TakeHeapSnapshot(v8::Isolate* isolate) {
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isolate->GetHeapProfiler()->TakeHeapSnapshot();
}
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void Initialize(v8::Local<v8::Object> exports, v8::Local<v8::Value> unused,
v8::Local<v8::Context> context, void* priv) {
mate::Dictionary dict(context->GetIsolate(), exports);
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dict.SetMethod("getHiddenValue", &GetHiddenValue);
dict.SetMethod("setHiddenValue", &SetHiddenValue);
dict.SetMethod("deleteHiddenValue", &DeleteHiddenValue);
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dict.SetMethod("getObjectHash", &GetObjectHash);
dict.SetMethod("takeHeapSnapshot", &TakeHeapSnapshot);
dict.SetMethod("setRemoteCallbackFreer", &atom::RemoteCallbackFreer::BindTo);
dict.SetMethod("setRemoteObjectFreer", &atom::RemoteObjectFreer::BindTo);
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dict.SetMethod("createIDWeakMap", &atom::api::KeyWeakMap<int32_t>::Create);
}
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} // namespace
NODE_MODULE_CONTEXT_AWARE_BUILTIN(atom_common_v8_util, Initialize)