debugger/DebuggerEvalEnabler.h

   1 /*
   2  * Copyright (C) 2014 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 #ifndef DebuggerEvalEnabler_h
  27 #define DebuggerEvalEnabler_h
  28
  29 #include "CallFrame.h"
  30 #include "JSGlobalObject.h"
  31
  32 namespace JSC {
  33
  34 class DebuggerEvalEnabler {
  35 public:
  36     explicit DebuggerEvalEnabler(const ExecState* exec)
  37         : m_exec(exec)
  38         , m_evalWasDisabled(false)
  39     {
  40         if (exec) {
  41             JSGlobalObject* globalObject = exec->lexicalGlobalObject();
  42             m_evalWasDisabled = !globalObject->evalEnabled();
  43             if (m_evalWasDisabled)
  44                 globalObject->setEvalEnabled(true, globalObject->evalDisabledErrorMessage());
  45         }
  46     }
  47
  48     ~DebuggerEvalEnabler()
  49     {
  50         if (m_evalWasDisabled) {
  51             JSGlobalObject* globalObject = m_exec->lexicalGlobalObject();
  52             globalObject->setEvalEnabled(false, globalObject->evalDisabledErrorMessage());
  53         }
  54     }
  55
  56 private:
  57     const ExecState* m_exec;
  58     bool m_evalWasDisabled;
  59 };
  60
  61 } // namespace JSC
  62
  63 #endif // DebuggerEvalEnabler_h