runtime/RegExpCachedResult.cpp

   1 /*
   2  * Copyright (C) 2012 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 "RegExpCachedResult.h"
  28
  29 #include "RegExpMatchesArray.h"
  30
  31 namespace JSC {
  32
  33 void RegExpCachedResult::visitChildren(SlotVisitor& visitor)
  34 {
  35     if (m_result) {
  36         visitor.append(&m_lastInput);
  37         visitor.append(&m_lastRegExp);
  38     } else {
  39         visitor.append(&m_reifiedInput);
  40         visitor.append(&m_reifiedResult);
  41     }
  42 }
  43
  44 RegExpMatchesArray* RegExpCachedResult::lastResult(ExecState* exec, JSObject* owner)
  45 {
  46     if (m_result) {
  47         m_reifiedInput.set(exec->globalData(), owner, m_lastInput.get());
  48         m_reifiedResult.set(exec->globalData(), owner, RegExpMatchesArray::create(exec, m_lastInput.get(), m_lastRegExp.get(), m_result));
  49         m_result = MatchResult::failed();
  50     }
  51     return m_reifiedResult.get();
  52 }
  53
  54 void RegExpCachedResult::setInput(ExecState* exec, JSObject* owner, JSString* input)
  55 {
  56     // Make sure we're reified, otherwise m_reifiedInput will be ignored.
  57     lastResult(exec, owner);
  58     ASSERT(!m_result);
  59     m_reifiedInput.set(exec->globalData(), owner, input);
  60 }
  61
  62 } // namespace JSC