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/*
* Copyright (c) 2010 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 "ScriptCallStackFactory.h"
#include "InspectorInstrumentation.h"
#include "InspectorValues.h"
#include "ScriptArguments.h"
#include "ScriptCallFrame.h"
#include "ScriptCallStack.h"
#include "ScriptScope.h"
#include "ScriptValue.h"
#include "V8Binding.h"
#include "V8Utilities.h"
#include <v8-debug.h>
namespace WebCore {
class ScriptExecutionContext;
static ScriptCallFrame toScriptCallFrame(v8::Handle<v8::StackFrame> frame)
{
String sourceName;
v8::Local<v8::String> sourceNameValue(frame->GetScriptNameOrSourceURL());
if (!sourceNameValue.IsEmpty())
sourceName = toWebCoreString(sourceNameValue);
String functionName;
v8::Local<v8::String> functionNameValue(frame->GetFunctionName());
if (!functionNameValue.IsEmpty())
functionName = toWebCoreString(functionNameValue);
int sourceLineNumber = frame->GetLineNumber();
int sourceColumn = frame->GetColumn();
return ScriptCallFrame(functionName, sourceName, sourceLineNumber, sourceColumn);
}
static void toScriptCallFramesVector(v8::Handle<v8::StackTrace> stackTrace, Vector<ScriptCallFrame>& scriptCallFrames, size_t maxStackSize, bool emptyStackIsAllowed)
{
ASSERT(v8::Context::InContext());
int frameCount = stackTrace->GetFrameCount();
if (frameCount > static_cast<int>(maxStackSize))
frameCount = maxStackSize;
for (int i = 0; i < frameCount; i++) {
v8::Local<v8::StackFrame> stackFrame = stackTrace->GetFrame(i);
scriptCallFrames.append(toScriptCallFrame(stackFrame));
}
if (!frameCount && !emptyStackIsAllowed) {
// Successfully grabbed stack trace, but there are no frames. It may happen in case
// when a bound function is called from native code for example.
// Fallback to setting lineNumber to 0, and source and function name to "undefined".
scriptCallFrames.append(ScriptCallFrame("undefined", "undefined", 0));
}
}
static PassRefPtr<ScriptCallStack> createScriptCallStack(v8::Handle<v8::StackTrace> stackTrace, size_t maxStackSize, bool emptyStackIsAllowed)
{
ASSERT(v8::Context::InContext());
v8::HandleScope scope;
Vector<ScriptCallFrame> scriptCallFrames;
toScriptCallFramesVector(stackTrace, scriptCallFrames, maxStackSize, emptyStackIsAllowed);
return ScriptCallStack::create(scriptCallFrames);
}
PassRefPtr<ScriptCallStack> createScriptCallStack(v8::Handle<v8::StackTrace> stackTrace, size_t maxStackSize)
{
return createScriptCallStack(stackTrace, maxStackSize, true);
}
PassRefPtr<ScriptCallStack> createScriptCallStack(size_t maxStackSize, bool emptyStackIsAllowed)
{
if (!v8::Context::InContext())
return 0;
v8::HandleScope handleScope;
v8::Handle<v8::StackTrace> stackTrace(v8::StackTrace::CurrentStackTrace(maxStackSize, stackTraceOptions));
return createScriptCallStack(stackTrace, maxStackSize, emptyStackIsAllowed);
}
PassRefPtr<ScriptCallStack> createScriptCallStackForConsole(size_t maxStackSize)
{
size_t stackSize = 1;
if (InspectorInstrumentation::hasFrontends()) {
ScriptExecutionContext* scriptExecutionContext = getScriptExecutionContext();
if (InspectorInstrumentation::consoleAgentEnabled(scriptExecutionContext))
stackSize = maxStackSize;
}
return createScriptCallStack(stackSize);
}
PassRefPtr<ScriptCallStack> createScriptCallStackForConsole(ScriptState*)
{
return createScriptCallStackForConsole();
}
PassRefPtr<ScriptCallStack> createScriptCallStack(ScriptState*, size_t maxStackSize)
{
return createScriptCallStackForConsole(maxStackSize);
}
PassRefPtr<ScriptArguments> createScriptArguments(const v8::Arguments& v8arguments, unsigned skipArgumentCount)
{
v8::HandleScope scope;
v8::Local<v8::Context> context = v8::Context::GetCurrent();
ScriptState* state = ScriptState::forContext(context);
Vector<ScriptValue> arguments;
for (int i = skipArgumentCount; i < v8arguments.Length(); ++i)
arguments.append(ScriptValue(v8arguments[i]));
return ScriptArguments::create(state, arguments);
}
} // namespace WebCore
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