1 /*

     2  * Copyright (c) 2010, 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 "JavaScriptCallFrame.h"

    33 

    34 #if ENABLE(JAVASCRIPT_DEBUGGER)

    35 

    36 #include "V8Binding.h"

    37 

    38 namespace WebCore {

    39 

    40 JavaScriptCallFrame::JavaScriptCallFrame(v8::Handle<v8::Context> debuggerContext, v8::Handle<v8::Object> callFrame)

    41     : m_debuggerContext(debuggerContext)

    42     , m_callFrame(callFrame)

    43 {

    44 }

    45 

    46 JavaScriptCallFrame::~JavaScriptCallFrame()

    47 {

    48 }

    49 

    50 JavaScriptCallFrame* JavaScriptCallFrame::caller()

    51 {

    52     if (!m_caller) {

    53         v8::HandleScope handleScope;

    54         v8::Context::Scope contextScope(m_debuggerContext.get());

    55         v8::Handle<v8::Value> callerFrame = m_callFrame.get()->Get(v8String("caller"));

    56         if (!callerFrame->IsObject())

    57             return 0;

    58         m_caller = JavaScriptCallFrame::create(m_debuggerContext.get(), v8::Handle<v8::Object>::Cast(callerFrame));

    59     }

    60     return m_caller.get();

    61 }

    62 

    63 int JavaScriptCallFrame::sourceID() const

    64 {

    65     v8::HandleScope handleScope;

    66     v8::Context::Scope contextScope(m_debuggerContext.get());

    67     v8::Handle<v8::Value> result = m_callFrame.get()->Get(v8String("sourceID"));

    68     if (result->IsInt32())

    69         return result->Int32Value();

    70     return 0;

    71 }

    72 

    73 int JavaScriptCallFrame::line() const

    74 {

    75     v8::HandleScope handleScope;

    76     v8::Context::Scope contextScope(m_debuggerContext.get());

    77     v8::Handle<v8::Value> result = m_callFrame.get()->Get(v8String("line"));

    78     if (result->IsInt32())

    79         return result->Int32Value();

    80     return 0;

    81 }

    82 

    83 String JavaScriptCallFrame::functionName() const

    84 {

    85     v8::HandleScope handleScope;

    86     v8::Context::Scope contextScope(m_debuggerContext.get());

    87     v8::Handle<v8::Value> result = m_callFrame.get()->Get(v8String("functionName"));

    88     return toWebCoreStringWithNullOrUndefinedCheck(result);

    89 }

    90 

    91 v8::Handle<v8::Value> JavaScriptCallFrame::scopeChain() const

    92 {

    93     v8::Handle<v8::Array> scopeChain = v8::Handle<v8::Array>::Cast(m_callFrame.get()->Get(v8String("scopeChain")));

    94     v8::Handle<v8::Array> result = v8::Array::New(scopeChain->Length());

    95     for (uint32_t i = 0; i < scopeChain->Length(); i++)

    96         result->Set(i, scopeChain->Get(i));

    97     return result;

    98 }

    99 

   100 int JavaScriptCallFrame::scopeType(int scopeIndex) const

   101 {

   102     v8::Handle<v8::Array> scopeType = v8::Handle<v8::Array>::Cast(m_callFrame.get()->Get(v8String("scopeType")));

   103     return scopeType->Get(scopeIndex)->Int32Value();

   104 }

   105 

   106 v8::Handle<v8::Value> JavaScriptCallFrame::thisObject() const

   107 {

   108     return m_callFrame.get()->Get(v8String("thisObject"));

   109 }

   110 

   111 v8::Handle<v8::Value> JavaScriptCallFrame::evaluate(const String& expression)

   112 {

   113     v8::Handle<v8::Function> evalFunction = v8::Handle<v8::Function>::Cast(m_callFrame.get()->Get(v8String("evaluate")));

   114     v8::Handle<v8::Value> argv[] = { v8String(expression) };

   115     return evalFunction->Call(m_callFrame.get(), 1, argv);

   116 }

   117 

   118 } // namespace WebCore

   119 

   120 #endif // ENABLE(JAVASCRIPT_DEBUGGER)