Merge DevTools Refactor CL to Blink36

Source/bindings/dart/DartDebugServer.cpp

Index: Source/bindings/dart/DartDebugServer.cpp
diff --git a/Source/bindings/dart/DartDebugServer.cpp b/Source/bindings/dart/DartDebugServer.cpp
deleted file mode 100644
index 55b68cdafe22dabe92a7929a221d9c24abfb2e67..0000000000000000000000000000000000000000
--- a/Source/bindings/dart/DartDebugServer.cpp
+++ /dev/null
@@ -1,650 +0,0 @@
-/*
- * Copyright (C) 2012 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 "bindings/dart/DartDebugServer.h"
-
-#include "DartDebugHooksSource.h"
-#include "bindings/dart/DartController.h"
-#include "bindings/dart/DartHandleProxy.h"
-#include "bindings/dart/DartUtilities.h"
-#include "bindings/dart/V8Converter.h"
-#include "bindings/v8/PageScriptDebugServer.h"
-#include "bindings/v8/ScriptController.h"
-#include "bindings/dart/DartScriptState.h"
-#include "bindings/v8/V8Binding.h"
-#include "core/dom/Document.h"
-#include "core/frame/DOMWindow.h"
-#include "core/inspector/InspectorController.h"
-#include "core/inspector/InspectorDebuggerAgent.h"
-#include "core/inspector/InspectorInstrumentation.h"
-#include "core/inspector/InstrumentingAgents.h"
-#include "core/page/Page.h"
-#include "platform/Logging.h"
-
-#include "wtf/HashMap.h"
-#include "wtf/Vector.h"
-#include <v8-debug.h>
-
-
-namespace WebCore {
-
-class V8EventDetails : public v8::Debug::EventDetails {
-public:
-    V8EventDetails(v8::DebugEvent event, v8::Handle<v8::Object> executionState, v8::Handle<v8::Object> eventData)
-        : m_event(event)
-        , m_executionState(executionState)
-        , m_eventData(eventData)
-    {
-        LocalFrame* frame = DartUtilities::domWindowForCurrentIsolate()->frame();
-        m_eventContext = toV8Context(v8::Isolate::GetCurrent(), frame, DOMWrapperWorld::mainWorld());
-    }
-
-    virtual v8::DebugEvent GetEvent() const { return m_event; }
-    virtual v8::Handle<v8::Object> GetExecutionState() const { return m_executionState; }
-    virtual v8::Handle<v8::Object> GetEventData() const { return m_eventData; }
-    virtual v8::Handle<v8::Context> GetEventContext() const { return m_eventContext; }
-    virtual v8::Handle<v8::Value> GetCallbackData() const { return v8::Undefined(v8::Isolate::GetCurrent()); }
-    virtual v8::Debug::ClientData* GetClientData() const { return 0; }
-
-private:
-    v8::DebugEvent m_event;
-    v8::Handle<v8::Object> m_executionState;
-    v8::Handle<v8::Object> m_eventData;
-    v8::Handle<v8::Context> m_eventContext;
-};
-
-template<typename T>
-class HandleMap {
-public:
-    HandleMap() : m_lastHandle(0)
-    {
-    }
-
-    int add(T value)
-    {
-        int handle = ++m_lastHandle;
-        m_handleToValueMap.set(handle, value);
-        m_valueToHandleMap.set(value, handle);
-        return handle;
-    }
-
-    T get(int handle)
-    {
-        return m_handleToValueMap.get(handle);
-    }
-
-    int getByValue(T value)
-    {
-        ASSERT(m_valueToHandleMap.contains(value));
-        return m_valueToHandleMap.get(value);
-    }
-
-    T remove(int handle)
-    {
-        T value = m_handleToValueMap.take(handle);
-        m_valueToHandleMap.remove(value);
-        return value;
-    }
-
-    int removeByValue(T value)
-    {
-        int handle = m_valueToHandleMap.take(value);
-        m_handleToValueMap.remove(handle);
-        return handle;
-    }
-
-    void copyValues(Vector<T>& values)
-    {
-        copyKeysToVector(m_valueToHandleMap, values);
-    }
-
-private:
-    int m_lastHandle;
-    HashMap<int, T> m_handleToValueMap;
-    HashMap<T, int> m_valueToHandleMap;
-};
-
-static HandleMap<Dart_Isolate>& isolateMap()
-{
-    DEFINE_STATIC_LOCAL(HandleMap<Dart_Isolate>, map, ());
-    return map;
-}
-
-DartDebugServer& DartDebugServer::shared()
-{
-    DEFINE_STATIC_LOCAL(DartDebugServer, server, ());
-    return server;
-}
-
-DartDebugServer::DartDebugServer()
-{
-}
-
-void DartDebugServer::registerIsolate(Dart_Isolate isolate)
-{
-    {
-        DartIsolateScope scope(isolate);
-        DartApiScope apiScope;
-        Dart_SetBreakpointHandler(breakpointHandler);
-        Dart_SetExceptionThrownHandler(exceptionHandler);
-        Dart_SetIsolateEventHandler(isolateEventHandler);
-    }
-
-    ensureHooksInstalled();
-
-    int isolateHandle = isolateMap().add(isolate);
-
-    V8Scope v8Scope(0, v8::Debug::GetDebugContext());
-    v8::Isolate* v8Isolate = v8::Isolate::GetCurrent();
-    v8::Local<v8::Function> registerIsolate = v8::Local<v8::Function>::Cast(dartDebugObject()->Get(v8::String::NewFromUtf8(v8Isolate, "registerIsolate")));
-    v8::Handle<v8::Value> args[] = { v8::Number::New(v8Isolate, isolateHandle) };
-    registerIsolate->Call(dartDebugObject(), 1, args);
-}
-
-void DartDebugServer::debugBreak()
-{
-    Vector<Dart_Isolate> isolates;
-    isolateMap().copyValues(isolates);
-    for (Vector<Dart_Isolate>::iterator it = isolates.begin(); it != isolates.end(); ++it) {
-        Dart_Isolate isolate = *it;
-        if (!m_interruptCalled.contains(isolate)) {
-            m_interruptCalled.add(isolate);
-            Dart_InterruptIsolate(isolate);
-        }
-        m_interruptCancelled.remove(isolate);
-    }
-}
-
-void DartDebugServer::cancelDebugBreak()
-{
-    // FIXME: it would be nice if the DartVM provided an API to directly cancel
-    // a debug break call like V8 does.
-    for (HashSet<Dart_Isolate>::iterator it = m_interruptCalled.begin(); it != m_interruptCalled.end(); ++it) {
-        m_interruptCancelled.add(*it);
-    }
-}
-
-void DartDebugServer::unregisterIsolate(Dart_Isolate isolate)
-{
-    int isolateHandle = isolateMap().removeByValue(isolate);
-
-    // The constructor for V8Scope expects Dart_InitOnce to have been
-    // invoked while it accesses the script execution context
-    // (DartUtilities::scriptExecutionContext). The assert below ensures
-    // that by making sure the DartDebugObject has been setup.
-    ASSERT(!m_dartDebugObject.isEmpty());
-    V8Scope v8Scope(0, v8::Debug::GetDebugContext());
-    v8::Isolate* v8Isolate = v8::Isolate::GetCurrent();
-    v8::Local<v8::Function> unregisterIsolate = v8::Local<v8::Function>::Cast(dartDebugObject()->Get(v8::String::NewFromUtf8(v8Isolate, "unregisterIsolate")));
-    v8::Handle<v8::Value> args[] = { v8::Number::New(v8Isolate, isolateHandle) };
-    unregisterIsolate->Call(dartDebugObject(), 1, args);
-}
-
-void DartDebugServer::isolateLoaded()
-{
-    Page* page = DartUtilities::domWindowForCurrentIsolate()->document()->page();
-    if (!page || !instrumentationForPage(page)->inspectorDebuggerAgent())
-        return;
-
-    ASSERT(Dart_CurrentIsolate());
-    V8Scope v8Scope(DartDOMData::current(), v8::Debug::GetDebugContext());
-
-    int isolateHandle = isolateMap().getByValue(Dart_CurrentIsolate());
-
-    LocalFrame* frame = DartUtilities::domWindowForCurrentIsolate()->frame();
-    DartController* controller = DartController::retrieve(frame);
-    Vector<DartScriptState*> scriptStates;
-    controller->collectScriptStatesForIsolate(Dart_CurrentIsolate(), DartUtilities::currentV8Context(), scriptStates);
-    for (size_t i = 0; i< scriptStates.size(); i++)
-        InspectorInstrumentation::didCreateIsolatedContext(frame, scriptStates[i], 0);
-
-    ASSERT(!m_dartDebugObject.isEmpty());
-    v8::Isolate* v8Isolate = v8::Isolate::GetCurrent();
-    v8::Local<v8::Function> isolateLoaded = v8::Local<v8::Function>::Cast(dartDebugObject()->Get(v8::String::NewFromUtf8(v8Isolate, "isolateLoaded")));
-    v8::Handle<v8::Value> args[] = { v8::Number::New(v8Isolate, isolateHandle) };
-    isolateLoaded->Call(dartDebugObject(), 1, args);
-}
-
-void DartDebugServer::disable()
-{
-    // Only invoke the disable method when Dart code was executed on the page.
-    if (m_dartDebugObject.isEmpty())
-        return;
-    V8Scope v8Scope(0, v8::Debug::GetDebugContext());
-    v8::Isolate* v8Isolate = v8::Isolate::GetCurrent();
-    v8::Local<v8::Function> disable = v8::Local<v8::Function>::Cast(dartDebugObject()->Get(v8::String::NewFromUtf8(v8Isolate, "disable")));
-    disable->Call(dartDebugObject(), 0, 0);
-}
-
-bool lookupTokenLineNumber(const Dart_CodeLocation& location, int* lineNumber, int* columnNumber)
-{
-    Dart_Handle info = Dart_ScriptGetTokenInfo(location.library_id, location.script_url);
-    ASSERT(Dart_IsList(info));
-    intptr_t infoLength = 0;
-    Dart_Handle ALLOW_UNUSED result = Dart_ListLength(info, &infoLength);
-    ASSERT(!Dart_IsError(result));
-    Dart_Handle elem;
-    bool lineStart = true;
-    int currentLineNumber = 0;
-    for (intptr_t i = 0; i < infoLength; i++) {
-        elem = Dart_ListGetAt(info, i);
-        if (Dart_IsNull(elem)) {
-            lineStart = true;
-        } else {
-            ASSERT(Dart_IsInteger(elem));
-            Dart_Handle exception = 0;
-            int64_t value = DartUtilities::toInteger(elem, exception);
-            ASSERT(!exception);
-            if (lineStart) {
-                // Line number.
-                currentLineNumber = value;
-                lineStart = false;
-            } else {
-                // Token offset.
-                if (value == location.token_pos) {
-                    *lineNumber = currentLineNumber;
-                    ASSERT(i + 1 < infoLength);
-                    *columnNumber = DartUtilities::toInteger(Dart_ListGetAt(info, i + 1), exception);
-                    ASSERT(!exception);
-                    return true;
-                }
-                i++; // skip columnNumber.
-            }
-        }
-    }
-    return false;
-}
-
-v8::Handle<v8::Object> DartDebugServer::createExecutionState(Dart_StackTrace trace)
-{
-    intptr_t length = 0;
-    Dart_Handle ALLOW_UNUSED result = Dart_StackTraceLength(trace, &length);
-    ASSERT(!Dart_IsError(result));
-    ASSERT(length);
-    ASSERT(Dart_CurrentIsolate());
-    int isolateHandle = isolateMap().getByValue(Dart_CurrentIsolate());
-
-    v8::Isolate* v8Isolate = v8::Isolate::GetCurrent();
-    v8::Local<v8::Array> callFrames = v8::Array::New(v8Isolate, length);
-    for (int i = length - 1; i >= 0; --i) {
-        Dart_ActivationFrame frame = 0;
-        result = Dart_GetActivationFrame(trace, i, &frame);
-        ASSERT(!Dart_IsError(result));
-        Dart_Handle functionName = 0;
-        Dart_Handle function = 0;
-
-        Dart_CodeLocation location;
-        result = Dart_ActivationFrameGetLocation(frame, &functionName, &function, &location);
-        int lineNumber = 0;
-        int columnNumber = 0;
-        lookupTokenLineNumber(location, &lineNumber, &columnNumber);
-        ASSERT(!Dart_IsError(result));
-        Dart_Handle libraryURL = Dart_GetLibraryURL(location.library_id);
-        ASSERT(!Dart_IsError(libraryURL));
-        Dart_Handle library = Dart_LookupLibrary(libraryURL);
-        Dart_Handle localVariablesHandle = Dart_GetLocalVariables(frame);
-
-        v8::Local<v8::Object> callFrame = v8::Object::New(v8Isolate);
-        callFrame->Set(v8::String::NewFromUtf8(v8Isolate, "functionName"), V8Converter::stringToV8(functionName));
-        callFrame->Set(v8::String::NewFromUtf8(v8Isolate, "functionProxy"), DartHandleProxy::create(function));
-        Dart_Handle functionOwner = function;
-        // Walk up the chain of function owners until we reach a type or library handle.
-        while (Dart_IsFunction(functionOwner))
-            functionOwner = Dart_FunctionOwner(functionOwner);
-
-        if (Dart_IsType(functionOwner)) {
-            callFrame->Set(v8::String::NewFromUtf8(v8Isolate, "classProxy"), DartHandleProxy::createTypeProxy(functionOwner, true));
-        }
-
-        callFrame->Set(v8::String::NewFromUtf8(v8Isolate, "scriptURL"), V8Converter::stringToV8(location.script_url));
-        callFrame->Set(v8::String::NewFromUtf8(v8Isolate, "lineNumber"), v8::Number::New(v8Isolate, lineNumber - 1));
-        callFrame->Set(v8::String::NewFromUtf8(v8Isolate, "columnNumber"), v8::Number::New(v8Isolate, columnNumber - 1));
-        callFrame->Set(v8::String::NewFromUtf8(v8Isolate, "libraryProxy"), DartHandleProxy::createLibraryProxy(library, location.library_id, Dart_Null(), true));
-        callFrame->Set(v8::String::NewFromUtf8(v8Isolate, "localScopeProxy"), DartHandleProxy::createLocalScopeProxy(
-            localVariablesHandle));
-        {
-            v8::Local<v8::Object> librariesMap = v8::Object::New(v8Isolate);
-            Dart_Handle libraries = Dart_GetLibraryIds();
-            ASSERT(Dart_IsList(libraries));
-
-            intptr_t librariesLength = 0;
-            Dart_Handle ALLOW_UNUSED result = Dart_ListLength(libraries, &librariesLength);
-            ASSERT(!Dart_IsError(result));
-            for (intptr_t i = 0; i < librariesLength; ++i) {
-                Dart_Handle libraryIdHandle = Dart_ListGetAt(libraries, i);
-                ASSERT(!Dart_IsError(libraryIdHandle));
-                Dart_Handle exception = 0;
-                int64_t libraryId = DartUtilities::toInteger(libraryIdHandle, exception);
-                v8::Local<v8::String> libraryName = V8Converter::stringToV8(Dart_GetLibraryURL(libraryId));
-                v8::Local<v8::Value> libraryProxy = DartHandleProxy::createLibraryProxy(Dart_GetLibraryFromId(libraryId), libraryId, Dart_Null(), false);
-                librariesMap->Set(libraryName, libraryProxy);
-            }
-            librariesMap->Set(v8::String::NewFromUtf8(v8Isolate, "__proto__"), v8::Null(v8Isolate));
-            callFrame->Set(v8::String::NewFromUtf8(v8Isolate, "librariesProxy"), librariesMap);
-        }
-        callFrame->Set(v8::String::NewFromUtf8(v8Isolate, "localVariables"), DartHandleProxy::create(localVariablesHandle));
-        callFrame->Set(v8::String::NewFromUtf8(v8Isolate, "isolateHandle"), v8::Number::New(v8Isolate, isolateHandle));
-        callFrames->Set(i, callFrame);
-    }
-
-    ASSERT(!m_dartDebugObject.isEmpty());
-    v8::Handle<v8::Function> executionStateConstructor = v8::Local<v8::Function>::Cast(dartDebugObject()->Get(v8::String::NewFromUtf8(v8Isolate, "ExecutionState")));
-    v8::Handle<v8::Value> args[] = { callFrames };
-    return v8::Local<v8::Object>::Cast(executionStateConstructor->CallAsConstructor(1, args));
-}
-
-void DartDebugServer::breakpointHandler(Dart_IsolateId isolateId, Dart_Breakpoint breakpoint, Dart_StackTrace trace)
-{
-    DartDebugServer::shared().handleBreakpoint(breakpoint, trace);
-}
-
-void DartDebugServer::handleBreakpoint(Dart_Breakpoint, Dart_StackTrace trace)
-{
-    // The constructor for V8Scope expects Dart_InitOnce to have been
-    // invoked while it accesses the script execution context
-    // (DartUtilities::scriptExecutionContext). The assert below ensures
-    // that by making sure the DartDebugObject has been setup.
-    ASSERT(!m_dartDebugObject.isEmpty());
-    v8::Isolate* v8Isolate = v8::Isolate::GetCurrent();
-    V8Scope v8Scope(0, v8::Debug::GetDebugContext());
-    V8Scope v8WorldScope(0, DartUtilities::currentV8Context());
-    V8EventDetails eventDetails(v8::Break, createExecutionState(trace), v8::Object::New(v8Isolate));
-    PageScriptDebugServer::shared().handleV8DebugEvent(eventDetails);
-}
-
-void DartDebugServer::exceptionHandler(Dart_IsolateId isolateId, Dart_Handle exception, Dart_StackTrace trace)
-{
-    DartDebugServer::shared().handleException(exception, trace);
-}
-
-void DartDebugServer::isolateEventHandler(Dart_IsolateId isolateId, Dart_IsolateEvent kind)
-{
-    if (kind == kInterrupted) {
-        DartDebugServer::shared().handleInterrupted(isolateId);
-    }
-}
-
-void DartDebugServer::handleInterrupted(Dart_IsolateId isolateId)
-{
-    Dart_Isolate isolate = Dart_GetIsolate(isolateId);
-
-    if (isolate) {
-        ASSERT(isolate == Dart_CurrentIsolate());
-        ASSERT(m_interruptCalled.contains(isolate));
-        m_interruptCalled.remove(isolate);
-        if (m_interruptCancelled.contains(isolate)) {
-            m_interruptCancelled.remove(isolate);
-            return;
-        }
-
-        // FIXME: this is a bit of a hack. V8 was also set to pause on the next
-        // code execution. If it attempts to pause while in the middle of
-        // internal V8 debugger logic it will crash so before we do anything we
-        // need to cancel the pending pause sent to V8.
-        // Perhaps it would be slightly less hacky to send a message to
-        // ScriptDebugServer instructing it to cancel pausing V8.
-        v8::Debug::CancelDebugBreak(DartUtilities::currentV8Context()->GetIsolate());
-
-        // The user really wants to be paused at the start of the first line of
-        // the Dart method not at the method invocation itself. Otherwise,
-        // stepping to the next call steps out of the executing Dart code
-        // which is not what the user expects.
-        Dart_SetStepInto();
-    }
-}
-
-void DartDebugServer::handleException(Dart_Handle exception, Dart_StackTrace trace)
-{
-    // The constructor for V8Scope expects Dart_InitOnce to have been
-    // invoked while it accesses the script execution context
-    // (DartUtilities::scriptExecutionContext). The assert below ensures
-    // that by making sure the DartDebugObject has been setup.
-    ASSERT(!m_dartDebugObject.isEmpty());
-    V8Scope v8Scope(0, v8::Debug::GetDebugContext());
-    V8Scope v8WorldScope(0, DartUtilities::currentV8Context());
-    v8::Isolate* v8Isolate = v8::Isolate::GetCurrent();
-    v8::Handle<v8::Function> eventDataConstructor = v8::Local<v8::Function>::Cast(dartDebugObject()->Get(v8::String::NewFromUtf8(v8Isolate, "EventData")));
-    v8::Handle<v8::Value> args[] = { DartHandleProxy::create(exception) };
-    v8::Handle<v8::Object> eventData = v8::Local<v8::Object>::Cast(eventDataConstructor->CallAsConstructor(1, args));
-    V8EventDetails eventDetails(v8::Exception, createExecutionState(trace), eventData);
-    PageScriptDebugServer::shared().handleV8DebugEvent(eventDetails);
-}
-
-static void handleDebugEvent(const v8::FunctionCallbackInfo<v8::Value>& args)
-{
-    v8::DebugEvent event = static_cast<v8::DebugEvent>(args[0]->Int32Value());
-    v8::Local<v8::Object> executionState = v8::Local<v8::Object>::Cast(args[1]);
-    v8::Local<v8::Object> eventData = v8::Local<v8::Object>::Cast(args[2]);
-    V8EventDetails eventDetails(event, executionState, eventData);
-    PageScriptDebugServer::shared().handleV8DebugEvent(eventDetails);
-}
-
-static void scriptsForIsolate(const v8::FunctionCallbackInfo<v8::Value>& args)
-{
-    v8::Isolate* v8Isolate = v8::Isolate::GetCurrent();
-    v8::Handle<v8::Array> v8Scripts = v8::Array::New(v8Isolate);
-
-    Dart_Isolate isolate = isolateMap().get(args[0]->Int32Value());
-
-    DartIsolateScope scope(isolate);
-    DartApiScope apiScope;
-
-    LocalFrame* frame = DartUtilities::domWindowForCurrentIsolate()->frame();
-    v8::Handle<v8::Value> contextData = toV8Context(v8Isolate, frame, DOMWrapperWorld::mainWorld())->GetEmbedderData(0);
-
-    Dart_Handle libraries = Dart_GetLibraryIds();
-    ASSERT(Dart_IsList(libraries));
-
-    intptr_t librariesLength = 0;
-    Dart_Handle ALLOW_UNUSED result = Dart_ListLength(libraries, &librariesLength);
-    ASSERT(!Dart_IsError(result));
-    for (intptr_t i = 0; i < librariesLength; ++i) {
-        Dart_Handle libraryIdHandle = Dart_ListGetAt(libraries, i);
-        ASSERT(!Dart_IsError(libraryIdHandle));
-        Dart_Handle exception = 0;
-        int64_t int64LibraryId = DartUtilities::toInteger(libraryIdHandle, exception);
-        ASSERT(!exception);
-        intptr_t libraryId = static_cast<intptr_t>(int64LibraryId);
-        ASSERT(libraryId == int64LibraryId);
-
-        Dart_Handle libraryURL = Dart_GetLibraryURL(libraryId);
-        ASSERT(Dart_IsString(libraryURL));
-
-        Dart_SetLibraryDebuggable(libraryId, true);
-
-        Dart_Handle scripts = Dart_GetScriptURLs(libraryURL);
-        ASSERT(Dart_IsList(scripts));
-
-        intptr_t scriptsLength = 0;
-        result = Dart_ListLength(scripts, &scriptsLength);
-        ASSERT(!Dart_IsError(result));
-        for (intptr_t j = 0; j < scriptsLength; ++j) {
-            Dart_Handle scriptURL = Dart_ListGetAt(scripts, j);
-            ASSERT(Dart_IsString(scriptURL));
-
-            Dart_Handle source = Dart_ScriptGetSource(libraryId, scriptURL);
-            ASSERT(Dart_IsString(source));
-
-            v8::Handle<v8::Object> v8Script = v8::Object::New(v8Isolate);
-            v8Script->Set(v8::String::NewFromUtf8(v8Isolate, "libraryId"), v8::Number::New(v8Isolate, libraryId));
-            v8Script->Set(v8::String::NewFromUtf8(v8Isolate, "scriptURL"), V8Converter::stringToV8(scriptURL));
-            v8Script->Set(v8::String::NewFromUtf8(v8Isolate, "source"), V8Converter::stringToV8(source));
-            v8Script->Set(v8::String::NewFromUtf8(v8Isolate, "contextData"), contextData);
-
-            v8Scripts->Set(v8::Integer::New(v8Isolate, v8Scripts->Length()), v8Script);
-        }
-    }
-    v8SetReturnValue(args, v8Scripts);
-}
-
-static void setBreakpoint(const v8::FunctionCallbackInfo<v8::Value>& args)
-{
-    Dart_Isolate isolate = isolateMap().get(args[0]->Int32Value());
-
-    DartIsolateScope scope(isolate);
-    DartApiScope apiScope;
-
-    Dart_Handle scriptURL = V8Converter::stringToDart(args[1]);
-    Dart_Handle breakpointId = Dart_SetBreakpoint(scriptURL, args[2]->Int32Value());
-    if (!Dart_IsError(breakpointId))
-        v8SetReturnValue(args, V8Converter::numberToV8(breakpointId));
-}
-
-static void removeBreakpoint(const v8::FunctionCallbackInfo<v8::Value>& args)
-{
-    Dart_Isolate isolate = isolateMap().get(args[0]->Int32Value());
-
-    DartIsolateScope scope(isolate);
-    DartApiScope apiScope;
-    Dart_Handle ALLOW_UNUSED result = Dart_RemoveBreakpoint(args[1]->Int32Value());
-    ASSERT(!Dart_IsError(result));
-}
-
-static void getBreakpointLine(const v8::FunctionCallbackInfo<v8::Value>& args)
-{
-    Dart_Isolate isolate = isolateMap().get(args[0]->Int32Value());
-
-    DartIsolateScope scope(isolate);
-    DartApiScope apiScope;
-    v8SetReturnValue(args, V8Converter::numberToV8(Dart_GetBreakpointLine(args[1]->Int32Value())));
-}
-
-static void setExceptionPauseInfo(const v8::FunctionCallbackInfo<v8::Value>& args)
-{
-    Dart_Isolate isolate = isolateMap().get(args[0]->Int32Value());
-    bool pauseOnAllExceptions = args[1]->BooleanValue();
-    bool pauseOnUnhandledExceptions = args[2]->BooleanValue();
-
-    DartIsolateScope scope(isolate);
-    DartApiScope apiScope;
-    Dart_ExceptionPauseInfo pauseInfo = kNoPauseOnExceptions;
-    if (pauseOnUnhandledExceptions)
-        pauseInfo = kPauseOnUnhandledExceptions;
-    if (pauseOnAllExceptions)
-        pauseInfo = kPauseOnAllExceptions;
-    Dart_SetExceptionPauseInfo(pauseInfo);
-}
-
-static void stepInto(const v8::FunctionCallbackInfo<v8::Value>& args)
-{
-    Dart_SetStepInto();
-}
-
-static void stepOver(const v8::FunctionCallbackInfo<v8::Value>& args)
-{
-    Dart_SetStepOver();
-}
-
-static void stepOut(const v8::FunctionCallbackInfo<v8::Value>& args)
-{
-    Dart_SetStepOut();
-}
-
-static void evaluateInScope(const v8::FunctionCallbackInfo<v8::Value>& args)
-{
-    v8::Handle<v8::String> expression = args[0]->ToString();
-    v8::Handle<v8::Value> receiver = args[1];
-    v8::Handle<v8::Object> functionProxy = args[2].As<v8::Object>();
-    v8::Handle<v8::Value> localVariablesProxy = args[3];
-    bool disableBreak = args[4]->BooleanValue();
-
-    DartScopes scopes(functionProxy, disableBreak);
-    Dart_Handle target = 0;
-    if (receiver->IsNull() || receiver->IsUndefined()) {
-        target = scopes.handle;
-        // Dart_EvaluateExpr cannot handle targets that are function handles so
-        // we walk up the chain of function owners until we reach a type
-        // or library handle.
-        while (Dart_IsFunction(target))
-            target = Dart_FunctionOwner(target);
-        ASSERT(Dart_IsLibrary(target) || Dart_IsType(target));
-    } else {
-        target = DartHandleProxy::unwrapValue(receiver);
-    }
-
-    ASSERT(!Dart_IsError(target));
-    Dart_Handle localVariables = DartHandleProxy::unwrapValue(localVariablesProxy);
-
-    v8SetReturnValue(args, DartHandleProxy::evaluate(target, V8Converter::stringToDart(expression), localVariables));
-}
-
-void DartDebugServer::ensureHooksInstalled()
-{
-    DEFINE_STATIC_LOCAL(bool, hooksInstalled, (false));
-
-    if (hooksInstalled)
-        return;
-
-    hooksInstalled = true;
-
-    ASSERT(Dart_CurrentIsolate());
-    v8::HandleScope scope(v8::Isolate::GetCurrent());
-    V8Scope v8Scope(0, v8::Debug::GetDebugContext());
-    String dartDebugHooksSource(reinterpret_cast<const char*>(DartDebugHooksSource_js), sizeof(DartDebugHooksSource_js));
-
-    v8::Isolate* v8Isolate = v8::Isolate::GetCurrent();
-    m_dartDebugObject.set(v8Isolate, v8::Local<v8::Object>::Cast(v8::Script::Compile(v8String(v8Isolate, dartDebugHooksSource))->Run()));
-
-    // We must set the v8 context to the page's context before invoking Dart
-    // code because of security checks in the console.log implementation
-    // (see InjectedScriptManager::canAccessInspectedWindow).
-    DartUtilities::currentV8Context()->Enter();
-    v8::Local<v8::Object> evaluateInScopeFunction = v8::FunctionTemplate::New(v8Isolate, &evaluateInScope)->GetFunction();
-    DartUtilities::currentV8Context()->Exit();
-
-    v8::Local<v8::Object> nativeCallbacks = v8::Object::New(v8Isolate);
-    nativeCallbacks->Set(v8::String::NewFromUtf8(v8Isolate, "handleDebugEvent"), v8::FunctionTemplate::New(v8Isolate, &handleDebugEvent)->GetFunction());
-    nativeCallbacks->Set(v8::String::NewFromUtf8(v8Isolate, "scriptsForIsolate"), v8::FunctionTemplate::New(v8Isolate, &scriptsForIsolate)->GetFunction());
-    nativeCallbacks->Set(v8::String::NewFromUtf8(v8Isolate, "setBreakpoint"), v8::FunctionTemplate::New(v8Isolate, &setBreakpoint)->GetFunction());
-    nativeCallbacks->Set(v8::String::NewFromUtf8(v8Isolate, "removeBreakpoint"), v8::FunctionTemplate::New(v8Isolate, &removeBreakpoint)->GetFunction());
-    nativeCallbacks->Set(v8::String::NewFromUtf8(v8Isolate, "getBreakpointLine"), v8::FunctionTemplate::New(v8Isolate, &getBreakpointLine)->GetFunction());
-    nativeCallbacks->Set(v8::String::NewFromUtf8(v8Isolate, "setExceptionPauseInfo"), v8::FunctionTemplate::New(v8Isolate, &setExceptionPauseInfo)->GetFunction());
-    nativeCallbacks->Set(v8::String::NewFromUtf8(v8Isolate, "stepInto"), v8::FunctionTemplate::New(v8Isolate, &stepInto)->GetFunction());
-    nativeCallbacks->Set(v8::String::NewFromUtf8(v8Isolate, "stepOver"), v8::FunctionTemplate::New(v8Isolate, &stepOver)->GetFunction());
-    nativeCallbacks->Set(v8::String::NewFromUtf8(v8Isolate, "stepOut"), v8::FunctionTemplate::New(v8Isolate, &stepOut)->GetFunction());
-    nativeCallbacks->Set(v8::String::NewFromUtf8(v8Isolate, "evaluateInScope"), evaluateInScopeFunction);
-    {
-        // Trampoline script is required to properly set calling context before
-        // invoking Dart code because of security checks in console.log
-        // implementation (see InjectedScriptManager::canAccessInspectedWindow).
-        V8Scope v8scope(0);
-        v8::Handle<v8::String> trampolineScript = v8::String::NewFromUtf8(v8Isolate, "(function (func, args) { return func.apply(this, args); })");
-        v8::Local<v8::Function> trampoline = v8::Local<v8::Function>::Cast(v8::Script::Compile(trampolineScript)->Run());
-        nativeCallbacks->Set(v8::String::NewFromUtf8(v8Isolate, "invocationTrampoline"), trampoline);
-    }
-    dartDebugObject()->Set(v8::String::NewFromUtf8(v8Isolate, "nativeCallbacks"), nativeCallbacks);
-}
-
-v8::Local<v8::Object> DartDebugServer::dartDebugObject()
-{
-    return m_dartDebugObject.newLocal(v8::Isolate::GetCurrent());
-}
-
-}