Merge the Sky Engine changes from the SkyDart branch

sky/engine/core/inspector/JavaScriptCallFrame.cpp

-/*
- * 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 "sky/engine/config.h"
-#include "sky/engine/core/inspector/JavaScriptCallFrame.h"
-
-#include "sky/engine/bindings/core/v8/ScriptValue.h"
-#include "sky/engine/bindings/core/v8/V8Binding.h"
-#include "v8/include/v8-debug.h"
-
-namespace blink {
-
-JavaScriptCallFrame::JavaScriptCallFrame(v8::Handle<v8::Context> debuggerContext, v8::Handle<v8::Object> callFrame)
-    : m_isolate(v8::Isolate::GetCurrent())
-    , m_debuggerContext(m_isolate, debuggerContext)
-    , m_callFrame(m_isolate, callFrame)
-{
-}
-
-JavaScriptCallFrame::~JavaScriptCallFrame()
-{
-}
-
-JavaScriptCallFrame* JavaScriptCallFrame::caller()
-{
-    if (!m_caller) {
-        v8::HandleScope handleScope(m_isolate);
-        v8::Handle<v8::Context> debuggerContext = m_debuggerContext.newLocal(m_isolate);
-        v8::Context::Scope contextScope(debuggerContext);
-        v8::Handle<v8::Value> callerFrame = m_callFrame.newLocal(m_isolate)->Get(v8AtomicString(m_isolate, "caller"));
-        if (callerFrame.IsEmpty() || !callerFrame->IsObject())
-            return 0;
-        m_caller = JavaScriptCallFrame::create(debuggerContext, v8::Handle<v8::Object>::Cast(callerFrame));
-    }
-    return m_caller.get();
-}
-
-int JavaScriptCallFrame::callV8FunctionReturnInt(const char* name) const
-{
-    v8::HandleScope handleScope(m_isolate);
-    v8::Context::Scope contextScope(m_debuggerContext.newLocal(m_isolate));
-    v8::Handle<v8::Object> callFrame = m_callFrame.newLocal(m_isolate);
-    v8::Handle<v8::Function> func = v8::Handle<v8::Function>::Cast(callFrame->Get(v8AtomicString(m_isolate, name)));
-    v8::Handle<v8::Value> result = func->Call(callFrame, 0, 0);
-    if (result.IsEmpty() || !result->IsInt32())
-        return 0;
-    return result->Int32Value();
-}
-
-String JavaScriptCallFrame::callV8FunctionReturnString(const char* name) const
-{
-    v8::HandleScope handleScope(m_isolate);
-    v8::Context::Scope contextScope(m_debuggerContext.newLocal(m_isolate));
-    v8::Handle<v8::Object> callFrame = m_callFrame.newLocal(m_isolate);
-    v8::Handle<v8::Function> func = v8::Handle<v8::Function>::Cast(callFrame->Get(v8AtomicString(m_isolate, name)));
-    v8::Handle<v8::Value> result = func->Call(callFrame, 0, 0);
-    return toCoreStringWithUndefinedOrNullCheck(result);
-}
-
-int JavaScriptCallFrame::sourceID() const
-{
-    return callV8FunctionReturnInt("sourceID");
-}
-
-int JavaScriptCallFrame::line() const
-{
-    return callV8FunctionReturnInt("line");
-}
-
-int JavaScriptCallFrame::column() const
-{
-    return callV8FunctionReturnInt("column");
-}
-
-String JavaScriptCallFrame::scriptName() const
-{
-    return callV8FunctionReturnString("scriptName");
-}
-
-String JavaScriptCallFrame::functionName() const
-{
-    return callV8FunctionReturnString("functionName");
-}
-
-v8::Handle<v8::Value> JavaScriptCallFrame::scopeChain() const
-{
-    v8::Handle<v8::Object> callFrame = m_callFrame.newLocal(m_isolate);
-    v8::Handle<v8::Function> func = v8::Handle<v8::Function>::Cast(callFrame->Get(v8AtomicString(m_isolate, "scopeChain")));
-    v8::Handle<v8::Array> scopeChain = v8::Handle<v8::Array>::Cast(func->Call(callFrame, 0, 0));
-    v8::Handle<v8::Array> result = v8::Array::New(m_isolate, scopeChain->Length());
-    for (uint32_t i = 0; i < scopeChain->Length(); i++)
-        result->Set(i, scopeChain->Get(i));
-    return result;
-}
-
-int JavaScriptCallFrame::scopeType(int scopeIndex) const
-{
-    v8::Handle<v8::Object> callFrame = m_callFrame.newLocal(m_isolate);
-    v8::Handle<v8::Function> func = v8::Handle<v8::Function>::Cast(callFrame->Get(v8AtomicString(m_isolate, "scopeType")));
-    v8::Handle<v8::Array> scopeType = v8::Handle<v8::Array>::Cast(func->Call(callFrame, 0, 0));
-    return scopeType->Get(scopeIndex)->Int32Value();
-}
-
-v8::Handle<v8::Value> JavaScriptCallFrame::thisObject() const
-{
-    return m_callFrame.newLocal(m_isolate)->Get(v8AtomicString(m_isolate, "thisObject"));
-}
-
-String JavaScriptCallFrame::stepInPositions() const
-{
-    return callV8FunctionReturnString("stepInPositions");
-}
-
-bool JavaScriptCallFrame::isAtReturn() const
-{
-    v8::HandleScope handleScope(m_isolate);
-    v8::Context::Scope contextScope(m_debuggerContext.newLocal(m_isolate));
-    v8::Handle<v8::Value> result = m_callFrame.newLocal(m_isolate)->Get(v8AtomicString(m_isolate, "isAtReturn"));
-    if (result.IsEmpty() || !result->IsBoolean())
-        return false;
-    return result->BooleanValue();
-}
-
-v8::Handle<v8::Value> JavaScriptCallFrame::returnValue() const
-{
-    return m_callFrame.newLocal(m_isolate)->Get(v8AtomicString(m_isolate, "returnValue"));
-}
-
-v8::Handle<v8::Value> JavaScriptCallFrame::evaluateWithExceptionDetails(const String& expression)
-{
-    v8::Handle<v8::Object> callFrame = m_callFrame.newLocal(m_isolate);
-    v8::Handle<v8::Function> evalFunction = v8::Handle<v8::Function>::Cast(callFrame->Get(v8AtomicString(m_isolate, "evaluate")));
-    v8::Handle<v8::Value> argv[] = { v8String(m_debuggerContext.newLocal(m_isolate)->GetIsolate(), expression) };
-    v8::TryCatch tryCatch;
-    v8::Handle<v8::Value> result = evalFunction->Call(callFrame, WTF_ARRAY_LENGTH(argv), argv);
-
-    v8::Handle<v8::Object> wrappedResult = v8::Object::New(m_isolate);
-    if (tryCatch.HasCaught()) {
-        wrappedResult->Set(v8::String::NewFromUtf8(m_isolate, "result"), tryCatch.Exception());
-        wrappedResult->Set(v8::String::NewFromUtf8(m_isolate, "exceptionDetails"), createExceptionDetails(tryCatch.Message(), m_isolate));
-    } else {
-        wrappedResult->Set(v8::String::NewFromUtf8(m_isolate, "result"), result);
-        wrappedResult->Set(v8::String::NewFromUtf8(m_isolate, "exceptionDetails"), v8::Undefined(m_isolate));
-    }
-    return wrappedResult;
-}
-
-v8::Handle<v8::Value> JavaScriptCallFrame::restart()
-{
-    v8::Handle<v8::Object> callFrame = m_callFrame.newLocal(m_isolate);
-    v8::Handle<v8::Function> restartFunction = v8::Handle<v8::Function>::Cast(callFrame->Get(v8AtomicString(m_isolate, "restart")));
-    v8::Debug::SetLiveEditEnabled(m_isolate, true);
-    v8::Handle<v8::Value> result = restartFunction->Call(callFrame, 0, 0);
-    v8::Debug::SetLiveEditEnabled(m_isolate, false);
-    return result;
-}
-
-ScriptValue JavaScriptCallFrame::setVariableValue(ScriptState* scriptState, int scopeNumber, const String& variableName, const ScriptValue& newValue)
-{
-    ScriptState::Scope scriptScope(scriptState);
-    v8::Handle<v8::Object> callFrame = m_callFrame.newLocal(m_isolate);
-    v8::Handle<v8::Function> setVariableValueFunction = v8::Handle<v8::Function>::Cast(callFrame->Get(v8AtomicString(m_isolate, "setVariableValue")));
-    v8::Handle<v8::Value> argv[] = {
-        v8::Handle<v8::Value>(v8::Integer::New(m_isolate, scopeNumber)),
-        v8String(m_isolate, variableName),
-        newValue.v8Value()
-    };
-    return ScriptValue(scriptState, setVariableValueFunction->Call(callFrame, WTF_ARRAY_LENGTH(argv), argv));
-}
-
-v8::Handle<v8::Object> JavaScriptCallFrame::createExceptionDetails(v8::Handle<v8::Message> message, v8::Isolate* isolate)
-{
-    v8::Handle<v8::Object> exceptionDetails = v8::Object::New(isolate);
-    exceptionDetails->Set(v8::String::NewFromUtf8(isolate, "text"), message->Get());
-    exceptionDetails->Set(v8::String::NewFromUtf8(isolate, "url"), message->GetScriptOrigin().ResourceName());
-    exceptionDetails->Set(v8::String::NewFromUtf8(isolate, "line"), v8::Integer::New(isolate, message->GetLineNumber()));
-    exceptionDetails->Set(v8::String::NewFromUtf8(isolate, "column"), v8::Integer::New(isolate, message->GetStartColumn()));
-    if (!message->GetStackTrace().IsEmpty())
-        exceptionDetails->Set(v8::String::NewFromUtf8(isolate, "stackTrace"), message->GetStackTrace()->AsArray());
-    else
-        exceptionDetails->Set(v8::String::NewFromUtf8(isolate, "stackTrace"), v8::Undefined(isolate));
-    return exceptionDetails;
-}
-
-} // namespace blink