Start moving files from core/inspector into v8_inspector

sky/engine/bindings/core/v8/PageScriptDebugServer.cpp

-/*
- * Copyright (c) 2011 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/bindings/core/v8/PageScriptDebugServer.h"
-
-#include "gen/sky/bindings/core/v8/V8Window.h"
-#include "sky/engine/bindings/core/v8/DOMWrapperWorld.h"
-#include "sky/engine/bindings/core/v8/ScriptController.h"
-#include "sky/engine/bindings/core/v8/ScriptSourceCode.h"
-#include "sky/engine/bindings/core/v8/V8Binding.h"
-#include "sky/engine/bindings/core/v8/V8ScriptRunner.h"
-#include "sky/engine/bindings/core/v8/WindowProxy.h"
-#include "sky/engine/core/dom/ExecutionContext.h"
-#include "sky/engine/core/frame/FrameConsole.h"
-#include "sky/engine/core/frame/LocalFrame.h"
-#include "sky/engine/core/frame/UseCounter.h"
-#include "sky/engine/core/inspector/InspectorTraceEvents.h"
-#include "sky/engine/core/inspector/ScriptDebugListener.h"
-#include "sky/engine/core/page/Page.h"
-#include "sky/engine/v8_inspector/inspector_host.h"
-#include "sky/engine/wtf/OwnPtr.h"
-#include "sky/engine/wtf/PassOwnPtr.h"
-#include "sky/engine/wtf/StdLibExtras.h"
-#include "sky/engine/wtf/TemporaryChange.h"
-#include "sky/engine/wtf/text/StringBuilder.h"
-
-namespace blink {
-
-static LocalFrame* retrieveFrameWithGlobalObjectCheck(v8::Handle<v8::Context> context)
-{
-    if (context.IsEmpty())
-        return 0;
-
-    // FIXME: This is a temporary hack for crbug.com/345014.
-    // Currently it's possible that V8 can trigger Debugger::ProcessDebugEvent for a context
-    // that is being initialized (i.e., inside Context::New() of the context).
-    // We should fix the V8 side so that it won't trigger the event for a half-baked context
-    // because there is no way in the embedder side to check if the context is half-baked or not.
-    if (isMainThread() && DOMWrapperWorld::windowIsBeingInitialized())
-        return 0;
-
-    v8::Handle<v8::Value> global = V8Window::findInstanceInPrototypeChain(context->Global(), context->GetIsolate());
-    if (global.IsEmpty())
-        return 0;
-
-    return toFrameIfNotDetached(context);
-}
-
-void PageScriptDebugServer::setPreprocessorSource(const String& preprocessorSource)
-{
-    if (preprocessorSource.isEmpty())
-        m_preprocessorSourceCode.clear();
-    else
-        m_preprocessorSourceCode = adoptPtr(new ScriptSourceCode(preprocessorSource));
-    m_scriptPreprocessor.clear();
-}
-
-PageScriptDebugServer& PageScriptDebugServer::shared()
-{
-    DEFINE_STATIC_LOCAL(PageScriptDebugServer, server, ());
-    return server;
-}
-
-v8::Isolate* PageScriptDebugServer::s_mainThreadIsolate = 0;
-
-void PageScriptDebugServer::setMainThreadIsolate(v8::Isolate* isolate)
-{
-    s_mainThreadIsolate = isolate;
-}
-
-PageScriptDebugServer::PageScriptDebugServer()
-    : ScriptDebugServer(s_mainThreadIsolate)
-    , m_pausedHost(0)
-{
-}
-
-PageScriptDebugServer::~PageScriptDebugServer()
-{
-}
-
-void PageScriptDebugServer::addListener(ScriptDebugListener* listener, inspector::InspectorHost* host)
-{
-    v8::HandleScope scope(m_isolate);
-
-    if (!m_listenersMap.size()) {
-        v8::Debug::SetDebugEventListener(&PageScriptDebugServer::v8DebugEventCallback, v8::External::New(m_isolate, this));
-        ensureDebuggerScriptCompiled();
-    }
-
-    v8::Local<v8::Context> debuggerContext = v8::Debug::GetDebugContext();
-    v8::Context::Scope contextScope(debuggerContext);
-
-    v8::Local<v8::Object> debuggerScript = m_debuggerScript.newLocal(m_isolate);
-    ASSERT(!debuggerScript->IsUndefined());
-    m_listenersMap.set(host, listener);
-
-    v8::Local<v8::Context> context = host->GetContext();
-    v8::Handle<v8::Function> getScriptsFunction = v8::Local<v8::Function>::Cast(debuggerScript->Get(v8AtomicString(m_isolate, "getScripts")));
-    v8::Handle<v8::Value> argv[] = { context->GetEmbedderData(0) };
-    v8::Handle<v8::Value> value = V8ScriptRunner::callInternalFunction(getScriptsFunction, debuggerScript, WTF_ARRAY_LENGTH(argv), argv, m_isolate);
-    if (value.IsEmpty())
-        return;
-    ASSERT(!value->IsUndefined() && value->IsArray());
-    v8::Handle<v8::Array> scriptsArray = v8::Handle<v8::Array>::Cast(value);
-    for (unsigned i = 0; i < scriptsArray->Length(); ++i)
-        dispatchDidParseSource(listener, v8::Handle<v8::Object>::Cast(scriptsArray->Get(v8::Integer::New(m_isolate, i))), CompileSuccess);
-}
-
-void PageScriptDebugServer::removeListener(ScriptDebugListener* listener, inspector::InspectorHost* host)
-{
-    if (!m_listenersMap.contains(host))
-        return;
-
-    if (m_pausedHost == host)
-        continueProgram();
-
-    m_listenersMap.remove(host);
-
-    if (m_listenersMap.isEmpty()) {
-        discardDebuggerScript();
-        v8::Debug::SetDebugEventListener(0);
-        // FIXME: Remove all breakpoints set by the agent.
-    }
-}
-
-void PageScriptDebugServer::interruptAndRun(PassOwnPtr<Task> task)
-{
-    ScriptDebugServer::interruptAndRun(task, s_mainThreadIsolate);
-}
-
-void PageScriptDebugServer::setClientMessageLoop(PassOwnPtr<ClientMessageLoop> clientMessageLoop)
-{
-    m_clientMessageLoop = clientMessageLoop;
-}
-
-void PageScriptDebugServer::compileScript(ScriptState* scriptState, const String& expression, const String& sourceURL, String* scriptId, String* exceptionDetailsText, int* lineNumber, int* columnNumber, RefPtr<ScriptCallStack>* stackTrace)
-{
-    ExecutionContext* executionContext = scriptState->executionContext();
-    RefPtr<LocalFrame> protect = executionContext->executingWindow()->frame();
-    ScriptDebugServer::compileScript(scriptState, expression, sourceURL, scriptId, exceptionDetailsText, lineNumber, columnNumber, stackTrace);
-    if (!scriptId->isNull())
-        m_compiledScriptURLs.set(*scriptId, sourceURL);
-}
-
-void PageScriptDebugServer::clearCompiledScripts()
-{
-    ScriptDebugServer::clearCompiledScripts();
-    m_compiledScriptURLs.clear();
-}
-
-void PageScriptDebugServer::runScript(ScriptState* scriptState, const String& scriptId, ScriptValue* result, bool* wasThrown, String* exceptionDetailsText, int* lineNumber, int* columnNumber, RefPtr<ScriptCallStack>* stackTrace)
-{
-    String sourceURL = m_compiledScriptURLs.take(scriptId);
-
-    ExecutionContext* executionContext = scriptState->executionContext();
-    LocalFrame* frame = executionContext->executingWindow()->frame();
-    TRACE_EVENT1(TRACE_DISABLED_BY_DEFAULT("devtools.timeline"), "EvaluateScript", "data", InspectorEvaluateScriptEvent::data(frame, sourceURL, TextPosition::minimumPosition().m_line.oneBasedInt()));
-    TRACE_EVENT_INSTANT1(TRACE_DISABLED_BY_DEFAULT("devtools.timeline.stack"), "CallStack", TRACE_EVENT_SCOPE_PROCESS, "stack", InspectorCallStackEvent::currentCallStack());
-
-    RefPtr<LocalFrame> protect = frame;
-    ScriptDebugServer::runScript(scriptState, scriptId, result, wasThrown, exceptionDetailsText, lineNumber, columnNumber, stackTrace);
-
-    TRACE_EVENT_INSTANT1(TRACE_DISABLED_BY_DEFAULT("devtools.timeline"), "UpdateCounters", TRACE_EVENT_SCOPE_PROCESS, "data", InspectorUpdateCountersEvent::data());
-}
-
-ScriptDebugListener* PageScriptDebugServer::getDebugListenerForContext(v8::Handle<v8::Context> context)
-{
-    v8::HandleScope scope(m_isolate);
-    LocalFrame* frame = retrieveFrameWithGlobalObjectCheck(context);
-    if (!frame)
-        return 0;
-    return m_listenersMap.get(frame->page()->inspectorHost());
-}
-
-void PageScriptDebugServer::runMessageLoopOnPause(v8::Handle<v8::Context> context)
-{
-    v8::HandleScope scope(m_isolate);
-    LocalFrame* frame = retrieveFrameWithGlobalObjectCheck(context);
-    m_pausedHost = frame->page()->inspectorHost();
-
-    // Wait for continue or step command.
-    m_clientMessageLoop->run(m_pausedHost);
-
-    // The listener may have been removed in the nested loop.
-    if (ScriptDebugListener* listener = m_listenersMap.get(m_pausedHost))
-        listener->didContinue();
-
-    m_pausedHost = 0;
-}
-
-void PageScriptDebugServer::quitMessageLoopOnPause()
-{
-    m_clientMessageLoop->quitNow();
-}
-
-void PageScriptDebugServer::preprocessBeforeCompile(const v8::Debug::EventDetails& eventDetails)
-{
-    v8::Handle<v8::Context> eventContext = eventDetails.GetEventContext();
-    LocalFrame* frame = retrieveFrameWithGlobalObjectCheck(eventContext);
-    if (!frame)
-        return;
-
-    if (!canPreprocess(frame))
-        return;
-
-    v8::Handle<v8::Object> eventData = eventDetails.GetEventData();
-    v8::Local<v8::Context> debugContext = v8::Debug::GetDebugContext();
-    v8::Context::Scope contextScope(debugContext);
-    v8::TryCatch tryCatch;
-    // <script> tag source and attribute value source are preprocessed before we enter V8.
-    // Avoid preprocessing any internal scripts by processing only eval source in this V8 event handler.
-    v8::Handle<v8::Value> argvEventData[] = { eventData };
-    v8::Handle<v8::Value> v8Value = callDebuggerMethod("isEvalCompilation", WTF_ARRAY_LENGTH(argvEventData), argvEventData);
-    if (v8Value.IsEmpty() || !v8Value->ToBoolean()->Value())
-        return;
-
-    // The name and source are in the JS event data.
-    String scriptName = toCoreStringWithUndefinedOrNullCheck(callDebuggerMethod("getScriptName", WTF_ARRAY_LENGTH(argvEventData), argvEventData));
-    String script = toCoreStringWithUndefinedOrNullCheck(callDebuggerMethod("getScriptSource", WTF_ARRAY_LENGTH(argvEventData), argvEventData));
-
-    String preprocessedSource  = m_scriptPreprocessor->preprocessSourceCode(script, scriptName);
-
-    v8::Handle<v8::Value> argvPreprocessedScript[] = { eventData, v8String(debugContext->GetIsolate(), preprocessedSource) };
-    callDebuggerMethod("setScriptSource", WTF_ARRAY_LENGTH(argvPreprocessedScript), argvPreprocessedScript);
-}
-
-static bool isCreatingPreprocessor = false;
-
-bool PageScriptDebugServer::canPreprocess(LocalFrame* frame)
-{
-    ASSERT(frame);
-
-    if (!m_preprocessorSourceCode || !frame->page() || isCreatingPreprocessor)
-        return false;
-
-    // We delay the creation of the preprocessor until just before the first JS from the
-    // Web page to ensure that the debugger's console initialization code has completed.
-    if (!m_scriptPreprocessor) {
-        TemporaryChange<bool> isPreprocessing(isCreatingPreprocessor, true);
-        m_scriptPreprocessor = adoptPtr(new ScriptPreprocessor(*m_preprocessorSourceCode.get(), frame));
-    }
-
-    if (m_scriptPreprocessor->isValid())
-        return true;
-
-    m_scriptPreprocessor.clear();
-    // Don't retry the compile if we fail one time.
-    m_preprocessorSourceCode.clear();
-    return false;
-}
-
-// Source to Source processing iff debugger enabled and it has loaded a preprocessor.
-PassOwnPtr<ScriptSourceCode> PageScriptDebugServer::preprocess(LocalFrame* frame, const ScriptSourceCode& sourceCode)
-{
-    if (!canPreprocess(frame))
-        return PassOwnPtr<ScriptSourceCode>();
-
-    String preprocessedSource = m_scriptPreprocessor->preprocessSourceCode(sourceCode.source(), sourceCode.url());
-    return adoptPtr(new ScriptSourceCode(preprocessedSource, sourceCode.url()));
-}
-
-String PageScriptDebugServer::preprocessEventListener(LocalFrame* frame, const String& source, const String& url, const String& functionName)
-{
-    if (!canPreprocess(frame))
-        return source;
-
-    return m_scriptPreprocessor->preprocessSourceCode(source, url, functionName);
-}
-
-void PageScriptDebugServer::clearPreprocessor()
-{
-    m_scriptPreprocessor.clear();
-}
-
-void PageScriptDebugServer::muteWarningsAndDeprecations()
-{
-    FrameConsole::mute();
-    UseCounter::muteForInspector();
-}
-
-void PageScriptDebugServer::unmuteWarningsAndDeprecations()
-{
-    FrameConsole::unmute();
-    UseCounter::unmuteForInspector();
-}
-
-} // namespace blink