include/keymaster/UniquePtr.h

/*
 * Copyright (C) 2010 The Android Open Source Project
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

#pragma once

#include <stddef.h>  // for size_t

#include <memory>

namespace keymaster {

// Default deleter for pointer types.
template <typename T> struct DefaultDelete {
    enum { type_must_be_complete = sizeof(T) };
    DefaultDelete() {}
    void operator()(T* p) const { delete p; }
};

// Default deleter for array types.
template <typename T> struct DefaultDelete<T[]> {
    enum { type_must_be_complete = sizeof(T) };
    void operator()(T* p) const { delete[] p; }
};

template <class T, class Deleter = std::default_delete<T>>
using UniquePtr = std::unique_ptr<T, Deleter>;

}  // namespace keymaster