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/*
* Copyright (C) 2008, 2009 Google Inc. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the following disclaimer
* in the documentation and/or other materials provided with the
* distribution.
* * Neither the name of Google Inc. nor the names of its
* contributors may be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include "config.h"
#include "ScriptCallStack.h"
#include "InspectorValues.h"
#include "ScriptScope.h"
#include "ScriptController.h"
#include "ScriptDebugServer.h"
#include "V8Binding.h"
#include <v8-debug.h>
namespace WebCore {
ScriptCallStack* ScriptCallStack::create(const v8::Arguments& arguments, unsigned skipArgumentCount) {
String sourceName;
int sourceLineNumber;
String funcName;
if (!callLocation(&sourceName, &sourceLineNumber, &funcName))
return 0;
return new ScriptCallStack(arguments, skipArgumentCount, sourceName, sourceLineNumber, funcName);
}
bool ScriptCallStack::callLocation(String* sourceName, int* sourceLineNumber, String* functionName)
{
v8::HandleScope scope;
v8::Context::Scope contextScope(v8::Context::GetCurrent());
v8::Handle<v8::StackTrace> stackTrace(v8::StackTrace::CurrentStackTrace(1));
if (stackTrace.IsEmpty())
return false;
if (stackTrace->GetFrameCount() <= 0) {
// Successfully grabbed stack trace, but there are no frames.
// Fallback to setting lineNumber to 0, and source and function name to "undefined".
*sourceName = toWebCoreString(v8::Undefined());
*sourceLineNumber = 0;
*functionName = toWebCoreString(v8::Undefined());
return true;
}
v8::Handle<v8::StackFrame> frame = stackTrace->GetFrame(0);
// There must be at least one valid frame.
ASSERT(!frame.IsEmpty());
v8::Local<v8::String> sourceNameValue(frame->GetScriptName());
v8::Local<v8::String> functionNameValue(frame->GetFunctionName());
*sourceName = sourceNameValue.IsEmpty() ? "" : toWebCoreString(sourceNameValue);
*functionName = functionNameValue.IsEmpty() ? "" : toWebCoreString(functionNameValue);
*sourceLineNumber = frame->GetLineNumber();
return true;
}
ScriptCallStack::ScriptCallStack(const v8::Arguments& arguments, unsigned skipArgumentCount, String sourceName, int sourceLineNumber, String functionName)
: m_lastCaller(functionName, sourceName, sourceLineNumber, arguments, skipArgumentCount)
, m_scriptState(ScriptState::current())
{
}
ScriptCallStack::~ScriptCallStack()
{
}
const ScriptCallFrame& ScriptCallStack::at(unsigned index) const
{
// Currently, only one ScriptCallFrame is supported. When we can get
// a full stack trace from V8, we can do this right.
ASSERT(index == 0);
return m_lastCaller;
}
bool ScriptCallStack::stackTrace(int frameLimit, const RefPtr<InspectorArray>& stackTrace)
{
#if ENABLE(INSPECTOR)
if (!v8::Context::InContext())
return false;
v8::Handle<v8::Context> context = v8::Context::GetCurrent();
if (context.IsEmpty())
return false;
v8::HandleScope scope;
v8::Context::Scope contextScope(context);
v8::Handle<v8::StackTrace> trace(v8::StackTrace::CurrentStackTrace(frameLimit));
int frameCount = trace->GetFrameCount();
if (trace.IsEmpty() || !frameCount)
return false;
for (int i = 0; i < frameCount; ++i) {
v8::Handle<v8::StackFrame> frame = trace->GetFrame(i);
RefPtr<InspectorObject> frameObject = InspectorObject::create();
v8::Local<v8::String> scriptName = frame->GetScriptName();
frameObject->setString("scriptName", scriptName.IsEmpty() ? "" : toWebCoreString(scriptName));
v8::Local<v8::String> functionName = frame->GetFunctionName();
frameObject->setString("functionName", functionName.IsEmpty() ? "" : toWebCoreString(functionName));
frameObject->setNumber("lineNumber", frame->GetLineNumber());
frameObject->setNumber("column", frame->GetColumn());
stackTrace->push(frameObject);
}
return true;
#else
return false;
#endif
}
} // namespace WebCore
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