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/*
* Copyright (C) 2022 Apple Inc. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS''
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
* THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS
* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
* THE POSSIBILITY OF SUCH DAMAGE.
*/
#pragma once
#include <optional>
namespace IPC {
struct ReceiverMatcher {
// Matches all messages.
ReceiverMatcher() = default;
// Matches message to specific receiver, any destination ID.
ReceiverMatcher(ReceiverName receiverName)
: receiverName(receiverName)
{
}
// Matches message to specific receiver, specific destination ID.
// Note: destinationID == 0 matches only 0 ids.
ReceiverMatcher(ReceiverName receiverName, uint64_t destinationID)
: receiverName(receiverName)
, destinationID(destinationID)
{
}
// Creates a matcher from parameters where destinationID == 0 means any destintation ID. Deprecated.
static ReceiverMatcher createWithZeroAsAnyDestination(ReceiverName receiverName, uint64_t destinationID)
{
if (destinationID)
return ReceiverMatcher { receiverName, destinationID };
return ReceiverMatcher { receiverName };
}
bool matches(ReceiverName matchReceiverName, uint64_t matchDestinationID) const
{
return !receiverName || (*receiverName == matchReceiverName && (!destinationID || *destinationID == matchDestinationID));
}
std::optional<ReceiverName> receiverName;
std::optional<uint64_t> destinationID;
};
}
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