Source/JavaScriptCore/inspector/IdentifiersFactory.cpp

/*
 * Copyright (C) 2014-2018 Apple Inc. All rights reserved.
 * Copyright (C) 2011 Google 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. ``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
 * 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
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#include "config.h"
#include "IdentifiersFactory.h"

#include <wtf/text/StringConcatenateNumbers.h>

namespace Inspector {

namespace {
static unsigned long s_lastUsedIdentifier = 0;
}

static String addPrefixToIdentifier(unsigned long identifier)
{
    return makeString("0.", identifier);
}

String IdentifiersFactory::createIdentifier()
{
    return addPrefixToIdentifier(++s_lastUsedIdentifier);
}

String IdentifiersFactory::requestId(unsigned long identifier)
{
    return identifier ? addPrefixToIdentifier(identifier) : String();
}

} // namespace Inspector