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// Copyright 2015 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_BINDINGS_CORE_V8_MAPLIKE_H_
#define THIRD_PARTY_BLINK_RENDERER_BINDINGS_CORE_V8_MAPLIKE_H_
#include "third_party/blink/renderer/bindings/core/v8/iterable.h"
#include "third_party/blink/renderer/bindings/core/v8/to_v8_traits.h"
namespace blink {
namespace bindings {
template <typename IDLKeyType,
typename IDLValueType,
typename KeyType,
typename ValueType>
class MaplikeReadAcccess {
public:
// https://webidl.spec.whatwg.org/#es-map-get
v8::Local<v8::Value> getForBinding(ScriptState* script_state,
const KeyType& key,
ExceptionState& exception_state) {
IDLTypeDefaultConstructible<ValueType> value;
if (!GetMapEntry(script_state, key, value.content, exception_state)) {
return v8::Undefined(script_state->GetIsolate());
}
return ToV8Traits<IDLValueType>::ToV8(script_state, value.content);
}
// https://webidl.spec.whatwg.org/#es-map-has
bool hasForBinding(ScriptState* script_state,
const KeyType& key,
ExceptionState& exception_state) {
IDLTypeDefaultConstructible<ValueType> unused_value;
return GetMapEntry(script_state, key, unused_value.content,
exception_state);
}
private:
virtual bool GetMapEntry(ScriptState* script_state,
const KeyType& key,
ValueType& value,
ExceptionState& exception_state) = 0;
};
} // namespace bindings
template <typename IDLInterface>
class Maplike : public PairSyncIterable<IDLInterface>,
public bindings::MaplikeReadAcccess<
typename PairSyncIterable<IDLInterface>::IDLKeyType,
typename PairSyncIterable<IDLInterface>::IDLValueType,
typename PairSyncIterable<IDLInterface>::KeyType,
typename PairSyncIterable<IDLInterface>::ValueType> {};
} // namespace blink
#endif // THIRD_PARTY_BLINK_RENDERER_BINDINGS_CORE_V8_MAPLIKE_H_
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