| /* |
| * 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 "config.h" |
| #include "bindings/v8/PageScriptDebugServer.h" |
| |
| |
| #include "V8Window.h" |
| #include "bindings/v8/ScriptController.h" |
| #include "bindings/v8/ScriptSourceCode.h" |
| #include "bindings/v8/V8Binding.h" |
| #include "bindings/v8/V8ScriptRunner.h" |
| #include "bindings/v8/V8WindowShell.h" |
| #include "core/inspector/InspectorInstrumentation.h" |
| #include "core/inspector/ScriptDebugListener.h" |
| #include "core/frame/Frame.h" |
| #include "core/page/Page.h" |
| #include "wtf/OwnPtr.h" |
| #include "wtf/PassOwnPtr.h" |
| #include "wtf/StdLibExtras.h" |
| #include "wtf/TemporaryChange.h" |
| #include "wtf/text/StringBuilder.h" |
| |
| namespace WebCore { |
| |
| static Frame* retrieveFrameWithGlobalObjectCheck(v8::Handle<v8::Context> context) |
| { |
| if (context.IsEmpty()) |
| return 0; |
| |
| // Test that context has associated global dom window object. |
| v8::Handle<v8::Object> global = context->Global(); |
| if (global.IsEmpty()) |
| return 0; |
| |
| global = global->FindInstanceInPrototypeChain(V8Window::domTemplate(context->GetIsolate(), worldTypeInMainThread(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; |
| } |
| |
| PageScriptDebugServer::PageScriptDebugServer() |
| : ScriptDebugServer(v8::Isolate::GetCurrent()) |
| , m_pausedPage(0) |
| { |
| } |
| |
| void PageScriptDebugServer::addListener(ScriptDebugListener* listener, Page* page) |
| { |
| ScriptController& scriptController = page->mainFrame()->script(); |
| if (!scriptController.canExecuteScripts(NotAboutToExecuteScript)) |
| return; |
| |
| v8::HandleScope scope(m_isolate); |
| v8::Local<v8::Context> debuggerContext = v8::Debug::GetDebugContext(); |
| v8::Context::Scope contextScope(debuggerContext); |
| |
| v8::Local<v8::Object> debuggerScript = m_debuggerScript.newLocal(m_isolate); |
| if (!m_listenersMap.size()) { |
| ensureDebuggerScriptCompiled(); |
| ASSERT(!debuggerScript->IsUndefined()); |
| v8::Debug::SetDebugEventListener2(&PageScriptDebugServer::v8DebugEventCallback, v8::External::New(m_isolate, this)); |
| } |
| m_listenersMap.set(page, listener); |
| |
| V8WindowShell* shell = scriptController.existingWindowShell(mainThreadNormalWorld()); |
| if (!shell || !shell->isContextInitialized()) |
| return; |
| v8::Local<v8::Context> context = shell->context(); |
| 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(i, m_isolate)))); |
| } |
| |
| void PageScriptDebugServer::removeListener(ScriptDebugListener* listener, Page* page) |
| { |
| if (!m_listenersMap.contains(page)) |
| return; |
| |
| if (m_pausedPage == page) |
| continueProgram(); |
| |
| m_listenersMap.remove(page); |
| |
| if (m_listenersMap.isEmpty()) |
| v8::Debug::SetDebugEventListener2(0); |
| // FIXME: Remove all breakpoints set by the agent. |
| } |
| |
| void PageScriptDebugServer::setClientMessageLoop(PassOwnPtr<ClientMessageLoop> clientMessageLoop) |
| { |
| m_clientMessageLoop = clientMessageLoop; |
| } |
| |
| void PageScriptDebugServer::compileScript(ScriptState* state, const String& expression, const String& sourceURL, String* scriptId, String* exceptionMessage) |
| { |
| ExecutionContext* executionContext = state->executionContext(); |
| RefPtr<Frame> protect = toDocument(executionContext)->frame(); |
| ScriptDebugServer::compileScript(state, expression, sourceURL, scriptId, exceptionMessage); |
| if (!scriptId->isNull()) |
| m_compiledScriptURLs.set(*scriptId, sourceURL); |
| } |
| |
| void PageScriptDebugServer::clearCompiledScripts() |
| { |
| ScriptDebugServer::clearCompiledScripts(); |
| m_compiledScriptURLs.clear(); |
| } |
| |
| void PageScriptDebugServer::runScript(ScriptState* state, const String& scriptId, ScriptValue* result, bool* wasThrown, String* exceptionMessage) |
| { |
| String sourceURL = m_compiledScriptURLs.take(scriptId); |
| |
| ExecutionContext* executionContext = state->executionContext(); |
| Frame* frame = toDocument(executionContext)->frame(); |
| InspectorInstrumentationCookie cookie; |
| if (frame) |
| cookie = InspectorInstrumentation::willEvaluateScript(frame, sourceURL, TextPosition::minimumPosition().m_line.oneBasedInt()); |
| |
| RefPtr<Frame> protect = frame; |
| ScriptDebugServer::runScript(state, scriptId, result, wasThrown, exceptionMessage); |
| |
| if (frame) |
| InspectorInstrumentation::didEvaluateScript(cookie); |
| } |
| |
| ScriptDebugListener* PageScriptDebugServer::getDebugListenerForContext(v8::Handle<v8::Context> context) |
| { |
| v8::HandleScope scope(m_isolate); |
| Frame* frame = retrieveFrameWithGlobalObjectCheck(context); |
| if (!frame) |
| return 0; |
| return m_listenersMap.get(frame->page()); |
| } |
| |
| void PageScriptDebugServer::runMessageLoopOnPause(v8::Handle<v8::Context> context) |
| { |
| v8::HandleScope scope(m_isolate); |
| Frame* frame = retrieveFrameWithGlobalObjectCheck(context); |
| m_pausedPage = frame->page(); |
| |
| // Wait for continue or step command. |
| m_clientMessageLoop->run(m_pausedPage); |
| |
| // The listener may have been removed in the nested loop. |
| if (ScriptDebugListener* listener = m_listenersMap.get(m_pausedPage)) |
| listener->didContinue(); |
| |
| m_pausedPage = 0; |
| } |
| |
| void PageScriptDebugServer::quitMessageLoopOnPause() |
| { |
| m_clientMessageLoop->quitNow(); |
| } |
| |
| void PageScriptDebugServer::preprocessBeforeCompile(const v8::Debug::EventDetails& eventDetails) |
| { |
| v8::Handle<v8::Context> eventContext = eventDetails.GetEventContext(); |
| Frame* 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(Frame* 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->script(), frame->page()->console())); |
| } |
| |
| 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(Frame* 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(Frame* frame, const String& source, const String& url, const String& functionName) |
| { |
| if (!canPreprocess(frame)) |
| return source; |
| |
| return m_scriptPreprocessor->preprocessSourceCode(source, url, functionName); |
| } |
| |
| } // namespace WebCore |