1 /*

     2  * Copyright (C) 2008, 2009 Google 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 are

     6  * met:

     7  *

     8  *     * Redistributions of source code must retain the above copyright

     9  * notice, this list of conditions and the following disclaimer.

    10  *     * Redistributions in binary form must reproduce the above

    11  * copyright notice, this list of conditions and the following disclaimer

    12  * in the documentation and/or other materials provided with the

    13  * distribution.

    14  *     * Neither the name of Google Inc. nor the names of its

    15  * contributors may be used to endorse or promote products derived from

    16  * this software without specific prior written permission.

    17  * 

    18  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS

    19  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT

    20  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR

    21  * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT

    22  * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,

    23  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT

    24  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,

    25  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY

    26  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT

    27  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE

    28  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

    29  */

    30 

    31 #include "config.h"

    32 #include "ScriptInstance.h"

    33 

    34 #ifndef NDEBUG

    35 #include "V8Proxy.h"

    36 #endif

    37 #include <wtf/Assertions.h>

    38 

    39 namespace WebCore {

    40 

    41 V8ScriptInstance::V8ScriptInstance()

    42 {

    43 }

    44 

    45 V8ScriptInstance::V8ScriptInstance(v8::Handle<v8::Object> instance)

    46 {

    47     set(instance);

    48 }

    49 

    50 V8ScriptInstance::~V8ScriptInstance()

    51 {

    52     clear();

    53 }

    54 

    55 v8::Persistent<v8::Object> V8ScriptInstance::instance()

    56 {

    57     return m_instance;

    58 }

    59 

    60 void V8ScriptInstance::clear()

    61 {

    62     if (m_instance.IsEmpty())

    63         return;

    64 #ifndef NDEBUG

    65     V8GCController::unregisterGlobalHandle(this, m_instance);

    66 #endif

    67     m_instance.Dispose();

    68     m_instance.Clear();

    69 }

    70 

    71 void V8ScriptInstance::set(v8::Handle<v8::Object> instance)

    72 {

    73     clear();

    74     if (instance.IsEmpty())

    75         return;

    76 

    77     m_instance = v8::Persistent<v8::Object>::New(instance);

    78 #ifndef NDEBUG

    79     V8GCController::registerGlobalHandle(SCRIPTINSTANCE, this, m_instance);

    80 #endif

    81 }

    82 

    83 } // namespace WebCore