chromium/third_party/inspector_protocol/crdtp/maybe.h

// Copyright 2019 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef CRDTP_MAYBE_H_
#define CRDTP_MAYBE_H_

#include <cassert>
#include <memory>

namespace crdtp {

// =============================================================================
// detail::PtrMaybe, detail::ValueMaybe, templates for optional
// pointers / values which are used in ../lib/Forward_h.template.
// =============================================================================

namespace detail {
template <typename T>
class PtrMaybe { … };

template <typename T>
class ValueMaybe { … };

template <typename T>
struct MaybeTypedef { … };

template <>
struct MaybeTypedef<bool> { … };

template <>
struct MaybeTypedef<int> { … };

template <>
struct MaybeTypedef<double> { … };

template <>
struct MaybeTypedef<std::string> { … };

}  // namespace detail

Maybe;

}  // namespace crdtp

#endif  // CRDTP_MAYBE_H_