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// Copyright (c) 2013 GitHub, Inc.
// Use of this source code is governed by the MIT license that can be
// found in the LICENSE file.
#include <string>
#include <utility>
#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/native_mate_converters/gurl_converter.h"
#include "atom/common/node_includes.h"
#include "base/hash.h"
#include "native_mate/dictionary.h"
#include "url/origin.h"
#include "v8/include/v8-profiler.h"
namespace std {
// The hash function used by DoubleIDWeakMap.
template <typename Type1, typename Type2>
struct hash<std::pair<Type1, Type2>> {
std::size_t operator()(std::pair<Type1, Type2> value) const {
return base::HashInts(base::Hash(value.first), value.second);
}
};
} // namespace std
namespace mate {
template <typename Type1, typename Type2>
struct Converter<std::pair<Type1, Type2>> {
static bool FromV8(v8::Isolate* isolate,
v8::Local<v8::Value> val,
std::pair<Type1, Type2>* out) {
if (!val->IsArray())
return false;
v8::Local<v8::Array> array(v8::Local<v8::Array>::Cast(val));
if (array->Length() != 2)
return false;
return Converter<Type1>::FromV8(isolate, array->Get(0), &out->first) &&
Converter<Type2>::FromV8(isolate, array->Get(1), &out->second);
}
};
} // namespace mate
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,
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));
}
int32_t GetObjectHash(v8::Local<v8::Object> object) {
return object->GetIdentityHash();
}
void TakeHeapSnapshot(v8::Isolate* isolate) {
isolate->GetHeapProfiler()->TakeHeapSnapshot();
}
void RequestGarbageCollectionForTesting(v8::Isolate* isolate) {
isolate->RequestGarbageCollectionForTesting(
v8::Isolate::GarbageCollectionType::kFullGarbageCollection);
}
bool IsSameOrigin(const GURL& l, const GURL& r) {
return url::Origin::Create(l).IsSameOriginWith(url::Origin::Create(r));
}
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);
dict.SetMethod("getHiddenValue", &GetHiddenValue);
dict.SetMethod("setHiddenValue", &SetHiddenValue);
dict.SetMethod("deleteHiddenValue", &DeleteHiddenValue);
dict.SetMethod("getObjectHash", &GetObjectHash);
dict.SetMethod("takeHeapSnapshot", &TakeHeapSnapshot);
dict.SetMethod("setRemoteCallbackFreer", &atom::RemoteCallbackFreer::BindTo);
dict.SetMethod("setRemoteObjectFreer", &atom::RemoteObjectFreer::BindTo);
dict.SetMethod("createIDWeakMap", &atom::api::KeyWeakMap<int32_t>::Create);
dict.SetMethod(
"createDoubleIDWeakMap",
&atom::api::KeyWeakMap<std::pair<std::string, int32_t>>::Create);
dict.SetMethod("requestGarbageCollectionForTesting",
&RequestGarbageCollectionForTesting);
dict.SetMethod("isSameOrigin", &IsSameOrigin);
}
} // namespace
NODE_BUILTIN_MODULE_CONTEXT_AWARE(atom_common_v8_util, Initialize)