parser/SourceProvider.cpp

   1 /*
   2  * Copyright (C) 2013 Apple Inc. All Rights Reserved.
   3  *
   4  * Redistribution and use in source and binary forms, with or without
   5  * modification, are permitted provided that the following conditions
   6  * are met:
   7  * 1. Redistributions of source code must retain the above copyright
   8  *    notice, this list of conditions and the following disclaimer.
   9  * 2. Redistributions in binary form must reproduce the above copyright
  10  *    notice, this list of conditions and the following disclaimer in the
  11  *    documentation and/or other materials provided with the distribution.
  12  *
  13  * THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
  14  * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  15  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  16  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL APPLE INC. OR
  17  * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
  18  * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
  19  * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
  20  * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
  21  * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  22  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  23  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  24  */
  25
  26 #include "config.h"
  27 #include "SourceProvider.h"
  28 #include <wtf/StdLibExtras.h>
  29 #include <wtf/TCSpinLock.h>
  30
  31 namespace JSC {
  32
  33 SourceProvider::SourceProvider(const String& url, const TextPosition& startPosition)
  34     : m_url(url)
  35     , m_startPosition(startPosition)
  36     , m_validated(false)
  37     , m_id(0)
  38 {
  39 }
  40
  41 SourceProvider::~SourceProvider()
  42 {
  43 }
  44
  45 static inline size_t charPositionExtractor(const size_t* value)
  46 {
  47     return *value;
  48 }
  49
  50 static TCMalloc_SpinLock providerIdLock = SPINLOCK_INITIALIZER;
  51
  52 void SourceProvider::getID()
  53 {
  54     SpinLockHolder lock(&providerIdLock);
  55     if (!m_id) {
  56         static intptr_t nextProviderID = 0;
  57         m_id = ++nextProviderID;
  58     }
  59 }
  60
  61 } // namespace JSC
  62