inspector/IdentifiersFactory.cpp

   1 /*
   2  * Copyright (C) 2014 Apple Inc. All rights reserved.
   3  * Copyright (C) 2011 Google Inc.  All rights reserved.
   4  *
   5  * Redistribution and use in source and binary forms, with or without
   6  * modification, are permitted provided that the following conditions
   7  * are met:
   8  * 1. Redistributions of source code must retain the above copyright
   9  *    notice, this list of conditions and the following disclaimer.
  10  * 2. Redistributions in binary form must reproduce the above copyright
  11  *    notice, this list of conditions and the following disclaimer in the
  12  *    documentation and/or other materials provided with the distribution.
  13  *
  14  * THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
  15  * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  16  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  17  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL APPLE INC. OR
  18  * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
  19  * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
  20  * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
  21  * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
  22  * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  23  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  24  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  25  */
  26
  27 #include "config.h"
  28 #include "IdentifiersFactory.h"
  29
  30 #include <wtf/text/StringBuilder.h>
  31
  32 namespace Inspector {
  33
  34 namespace {
  35 static long s_lastUsedIdentifier = 0;
  36 }
  37
  38 long IdentifiersFactory::s_processId = 0;
  39
  40 String IdentifiersFactory::createIdentifier()
  41 {
  42     return addProcessIdPrefixTo(String::number(++s_lastUsedIdentifier));
  43 }
  44
  45 String IdentifiersFactory::requestId(unsigned long identifier)
  46 {
  47     if (identifier)
  48         return addProcessIdPrefixTo(String::number(identifier));
  49     return String();
  50 }
  51
  52 String IdentifiersFactory::addProcessIdPrefixTo(const String& id)
  53 {
  54     StringBuilder builder;
  55     builder.appendNumber(s_processId);
  56     builder.append('.');
  57     builder.append(id);
  58     return builder.toString();
  59 }
  60
  61 } // namespace Inspector
  62