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// Copyright 2015 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef MOJO_PUBLIC_CPP_BINDINGS_INTERFACE_PTR_INFO_H_
#define MOJO_PUBLIC_CPP_BINDINGS_INTERFACE_PTR_INFO_H_
#include <cstddef>
#include <cstdint>
#include <utility>
#include "base/macros.h"
#include "mojo/public/cpp/bindings/lib/pending_remote_state.h"
#include "mojo/public/cpp/system/message_pipe.h"
namespace mojo {
// InterfacePtrInfo stores necessary information to communicate with a remote
// interface implementation, which could be used to construct an InterfacePtr.
template <typename Interface>
class InterfacePtrInfo {
public:
InterfacePtrInfo() = default;
InterfacePtrInfo(std::nullptr_t) : InterfacePtrInfo() {}
InterfacePtrInfo(ScopedMessagePipeHandle handle, uint32_t version)
: state_(std::move(handle), version) {}
InterfacePtrInfo(InterfacePtrInfo&& other) = default;
~InterfacePtrInfo() {}
InterfacePtrInfo& operator=(InterfacePtrInfo&& other) = default;
bool is_valid() const { return state_.pipe.is_valid(); }
ScopedMessagePipeHandle PassHandle() { return std::move(state_.pipe); }
const ScopedMessagePipeHandle& handle() const { return state_.pipe; }
void set_handle(ScopedMessagePipeHandle handle) {
state_.pipe = std::move(handle);
}
uint32_t version() const { return state_.version; }
void set_version(uint32_t version) { state_.version = version; }
// Allow InterfacePtrInfo<> to be used in boolean expressions.
explicit operator bool() const { return state_.pipe.is_valid(); }
internal::PendingRemoteState* internal_state() { return &state_; }
private:
internal::PendingRemoteState state_;
DISALLOW_COPY_AND_ASSIGN(InterfacePtrInfo);
};
} // namespace mojo
#endif // MOJO_PUBLIC_CPP_BINDINGS_INTERFACE_PTR_INFO_H_