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// Copyright 2020 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef THIRD_PARTY_BLINK_RENDERER_PLATFORM_BINDINGS_V8_INTERFACE_BRIDGE_H_
#define THIRD_PARTY_BLINK_RENDERER_PLATFORM_BINDINGS_V8_INTERFACE_BRIDGE_H_
#include "third_party/blink/renderer/platform/bindings/script_wrappable.h"
#include "third_party/blink/renderer/platform/bindings/v8_interface_bridge_base.h"
#include "third_party/blink/renderer/platform/bindings/v8_per_isolate_data.h"
namespace blink {
namespace bindings {
template <class V8T, class T>
class V8InterfaceBridge : public V8InterfaceBridgeBase {
public:
static inline T* ToWrappable(v8::Isolate* isolate,
v8::Local<v8::Value> value) {
return HasInstance(isolate, value)
? ToWrappableUnsafe(isolate, value.As<v8::Object>())
: nullptr;
}
// TODO(japhet): Now that v8::Object::Unwrap uses tag ranges to enforce
// type safety, this returns nullptr if types are mismatched. It is therefore
// no longer "unsafe", and should be renamed or merged with ToWrappable().
static inline T* ToWrappableUnsafe(v8::Isolate* isolate,
v8::Local<v8::Object> value) {
return static_cast<T*>(
v8::Object::Unwrap<ScriptWrappable>(isolate, value, V8T::kTagRange));
}
static inline bool HasInstance(v8::Isolate* isolate,
v8::Local<v8::Value> value) {
return V8PerIsolateData::From(isolate)->HasInstance(
V8T::GetWrapperTypeInfo(), value);
}
};
} // namespace bindings
} // namespace blink
#endif // THIRD_PARTY_BLINK_RENDERER_PLATFORM_BINDINGS_V8_INTERFACE_BRIDGE_H_
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