1 files changed, 350 insertions, 0 deletions
diff --git a/Source/JavaScriptCore/inspector/ScriptDebugServer.cpp b/Source/JavaScriptCore/inspector/ScriptDebugServer.cpp
new file mode 100644
index 000000000..356de1cbc
--- /dev/null
+++ b/Source/JavaScriptCore/inspector/ScriptDebugServer.cpp
@@ -0,0 +1,350 @@
+/*
+ * Copyright (C) 2008, 2009, 2013, 2014 Apple Inc. All rights reserved.
+ * Copyright (C) 2010-2011 Google Inc. All rights reserved.
+ * Copyright (C) 2013 University of Washington. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1.  Redistributions of source code must retain the above copyright
+ *     notice, this list of conditions and the following disclaimer.
+ * 2.  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.
+ * 3.  Neither the name of Apple Inc. ("Apple") 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 APPLE AND ITS 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 APPLE OR ITS 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 "ScriptDebugServer.h"
+
+#include "DebuggerCallFrame.h"
+#include "DebuggerScope.h"
+#include "Exception.h"
+#include "JSJavaScriptCallFrame.h"
+#include "JSLock.h"
+#include "JavaScriptCallFrame.h"
+#include "ScriptValue.h"
+#include "SourceProvider.h"
+#include <wtf/NeverDestroyed.h>
+#include <wtf/TemporaryChange.h>
+#include <wtf/text/WTFString.h>
+
+using namespace JSC;
+
+namespace Inspector {
+
+ScriptDebugServer::ScriptDebugServer(bool isInWorkerThread)
+    : Debugger(isInWorkerThread)
+{
+}
+
+ScriptDebugServer::~ScriptDebugServer()
+{
+}
+
+JSC::BreakpointID ScriptDebugServer::setBreakpoint(JSC::SourceID sourceID, const ScriptBreakpoint& scriptBreakpoint, unsigned* actualLineNumber, unsigned* actualColumnNumber)
+{
+    if (!sourceID)
+        return JSC::noBreakpointID;
+
+    JSC::Breakpoint breakpoint(sourceID, scriptBreakpoint.lineNumber, scriptBreakpoint.columnNumber, scriptBreakpoint.condition, scriptBreakpoint.autoContinue);
+    JSC::BreakpointID id = Debugger::setBreakpoint(breakpoint, *actualLineNumber, *actualColumnNumber);
+    if (id != JSC::noBreakpointID && !scriptBreakpoint.actions.isEmpty()) {
+#ifndef NDEBUG
+        BreakpointIDToActionsMap::iterator it = m_breakpointIDToActions.find(id);
+        ASSERT(it == m_breakpointIDToActions.end());
+#endif
+        const BreakpointActions& actions = scriptBreakpoint.actions;
+        m_breakpointIDToActions.set(id, actions);
+    }
+    return id;
+}
+
+void ScriptDebugServer::removeBreakpoint(JSC::BreakpointID id)
+{
+    ASSERT(id != JSC::noBreakpointID);
+    BreakpointIDToActionsMap::iterator it = m_breakpointIDToActions.find(id);
+    if (it != m_breakpointIDToActions.end())
+        m_breakpointIDToActions.remove(it);
+
+    Debugger::removeBreakpoint(id);
+}
+
+bool ScriptDebugServer::evaluateBreakpointAction(const ScriptBreakpointAction& breakpointAction)
+{
+    DebuggerCallFrame* debuggerCallFrame = currentDebuggerCallFrame();
+
+    switch (breakpointAction.type) {
+    case ScriptBreakpointActionTypeLog: {
+        dispatchBreakpointActionLog(debuggerCallFrame->exec(), breakpointAction.data);
+        break;
+    }
+    case ScriptBreakpointActionTypeEvaluate: {
+        NakedPtr<Exception> exception;
+        debuggerCallFrame->evaluate(breakpointAction.data, exception);
+        if (exception)
+            reportException(debuggerCallFrame->exec(), exception);
+        break;
+    }
+    case ScriptBreakpointActionTypeSound:
+        dispatchBreakpointActionSound(debuggerCallFrame->exec(), breakpointAction.identifier);
+        break;
+    case ScriptBreakpointActionTypeProbe: {
+        NakedPtr<Exception> exception;
+        JSValue result = debuggerCallFrame->evaluate(breakpointAction.data, exception);
+        if (exception)
+            reportException(debuggerCallFrame->exec(), exception);
+        
+        JSC::ExecState* state = debuggerCallFrame->scope()->globalObject()->globalExec();
+        Deprecated::ScriptValue wrappedResult = Deprecated::ScriptValue(state->vm(), exception ? exception->value() : result);
+        dispatchBreakpointActionProbe(state, breakpointAction, wrappedResult);
+        break;
+    }
+    default:
+        ASSERT_NOT_REACHED();
+    }
+
+    return true;
+}
+
+void ScriptDebugServer::clearBreakpoints()
+{
+    Debugger::clearBreakpoints();
+    m_breakpointIDToActions.clear();
+}
+
+void ScriptDebugServer::dispatchDidPause(ScriptDebugListener* listener)
+{
+    ASSERT(isPaused());
+    DebuggerCallFrame* debuggerCallFrame = currentDebuggerCallFrame();
+    JSGlobalObject* globalObject = debuggerCallFrame->scope()->globalObject();
+    JSC::ExecState* state = globalObject->globalExec();
+    RefPtr<JavaScriptCallFrame> javaScriptCallFrame = JavaScriptCallFrame::create(debuggerCallFrame);
+    JSValue jsCallFrame = toJS(state, globalObject, javaScriptCallFrame.get());
+
+    listener->didPause(state, Deprecated::ScriptValue(state->vm(), jsCallFrame), exceptionOrCaughtValue(state));
+}
+
+void ScriptDebugServer::dispatchBreakpointActionLog(ExecState* exec, const String& message)
+{
+    if (m_callingListeners)
+        return;
+
+    ListenerSet& listeners = getListeners();
+    if (listeners.isEmpty())
+        return;
+
+    TemporaryChange<bool> change(m_callingListeners, true);
+
+    Vector<ScriptDebugListener*> listenersCopy;
+    copyToVector(listeners, listenersCopy);
+    for (auto* listener : listenersCopy)
+        listener->breakpointActionLog(exec, message);
+}
+
+void ScriptDebugServer::dispatchBreakpointActionSound(ExecState*, int breakpointActionIdentifier)
+{
+    if (m_callingListeners)
+        return;
+
+    ListenerSet& listeners = getListeners();
+    if (listeners.isEmpty())
+        return;
+
+    TemporaryChange<bool> change(m_callingListeners, true);
+
+    Vector<ScriptDebugListener*> listenersCopy;
+    copyToVector(listeners, listenersCopy);
+    for (auto* listener : listenersCopy)
+        listener->breakpointActionSound(breakpointActionIdentifier);
+}
+
+void ScriptDebugServer::dispatchBreakpointActionProbe(ExecState* exec, const ScriptBreakpointAction& action, const Deprecated::ScriptValue& sampleValue)
+{
+    if (m_callingListeners)
+        return;
+
+    ListenerSet& listeners = getListeners();
+    if (listeners.isEmpty())
+        return;
+
+    TemporaryChange<bool> change(m_callingListeners, true);
+
+    unsigned sampleId = m_nextProbeSampleId++;
+
+    Vector<ScriptDebugListener*> listenersCopy;
+    copyToVector(listeners, listenersCopy);
+    for (auto* listener : listenersCopy)
+        listener->breakpointActionProbe(exec, action, m_currentProbeBatchId, sampleId, sampleValue);
+}
+
+void ScriptDebugServer::dispatchDidContinue(ScriptDebugListener* listener)
+{
+    listener->didContinue();
+}
+
+void ScriptDebugServer::dispatchDidParseSource(const ListenerSet& listeners, SourceProvider* sourceProvider, bool isContentScript)
+{
+    JSC::SourceID sourceID = sourceProvider->asID();
+
+    ScriptDebugListener::Script script;
+    script.url = sourceProvider->url();
+    script.source = sourceProvider->source();
+    script.startLine = sourceProvider->startPosition().m_line.zeroBasedInt();
+    script.startColumn = sourceProvider->startPosition().m_column.zeroBasedInt();
+    script.isContentScript = isContentScript;
+
+    int sourceLength = script.source.length();
+    int lineCount = 1;
+    int lastLineStart = 0;
+    for (int i = 0; i < sourceLength; ++i) {
+        if (script.source[i] == '\n') {
+            lineCount += 1;
+            lastLineStart = i + 1;
+        }
+    }
+
+    script.endLine = script.startLine + lineCount - 1;
+    if (lineCount == 1)
+        script.endColumn = script.startColumn + sourceLength;
+    else
+        script.endColumn = sourceLength - lastLineStart;
+
+    Vector<ScriptDebugListener*> copy;
+    copyToVector(listeners, copy);
+    for (size_t i = 0; i < copy.size(); ++i)
+        copy[i]->didParseSource(sourceID, script);
+}
+
+void ScriptDebugServer::dispatchFailedToParseSource(const ListenerSet& listeners, SourceProvider* sourceProvider, int errorLine, const String& errorMessage)
+{
+    String url = sourceProvider->url();
+    const String& data = sourceProvider->source();
+    int firstLine = sourceProvider->startPosition().m_line.oneBasedInt();
+
+    Vector<ScriptDebugListener*> copy;
+    copyToVector(listeners, copy);
+    for (size_t i = 0; i < copy.size(); ++i)
+        copy[i]->failedToParseSource(url, data, firstLine, errorLine, errorMessage);
+}
+
+void ScriptDebugServer::sourceParsed(ExecState* exec, SourceProvider* sourceProvider, int errorLine, const String& errorMessage)
+{
+    if (m_callingListeners)
+        return;
+
+    ListenerSet& listeners = getListeners();
+    if (listeners.isEmpty())
+        return;
+
+    TemporaryChange<bool> change(m_callingListeners, true);
+
+    bool isError = errorLine != -1;
+    if (isError)
+        dispatchFailedToParseSource(listeners, sourceProvider, errorLine, errorMessage);
+    else
+        dispatchDidParseSource(listeners, sourceProvider, isContentScript(exec));
+}
+
+void ScriptDebugServer::dispatchFunctionToListeners(JavaScriptExecutionCallback callback)
+{
+    if (m_callingListeners)
+        return;
+
+    TemporaryChange<bool> change(m_callingListeners, true);
+
+    ListenerSet& listeners = getListeners();
+    if (!listeners.isEmpty())
+        dispatchFunctionToListeners(listeners, callback);
+}
+
+void ScriptDebugServer::dispatchFunctionToListeners(const ListenerSet& listeners, JavaScriptExecutionCallback callback)
+{
+    Vector<ScriptDebugListener*> copy;
+    copyToVector(listeners, copy);
+    for (size_t i = 0; i < copy.size(); ++i)
+        (this->*callback)(copy[i]);
+}
+
+void ScriptDebugServer::notifyDoneProcessingDebuggerEvents()
+{
+    m_doneProcessingDebuggerEvents = true;
+}
+
+void ScriptDebugServer::handleBreakpointHit(JSC::JSGlobalObject* globalObject, const JSC::Breakpoint& breakpoint)
+{
+    ASSERT(isAttached(globalObject));
+
+    m_currentProbeBatchId++;
+
+    BreakpointIDToActionsMap::iterator it = m_breakpointIDToActions.find(breakpoint.id);
+    if (it != m_breakpointIDToActions.end()) {
+        BreakpointActions actions = it->value;
+        for (size_t i = 0; i < actions.size(); ++i) {
+            if (!evaluateBreakpointAction(actions[i]))
+                return;
+            if (!isAttached(globalObject))
+                return;
+        }
+    }
+}
+
+void ScriptDebugServer::handleExceptionInBreakpointCondition(JSC::ExecState* exec, JSC::Exception* exception) const
+{
+    reportException(exec, exception);
+}
+
+void ScriptDebugServer::handlePause(JSGlobalObject* vmEntryGlobalObject, Debugger::ReasonForPause)
+{
+    dispatchFunctionToListeners(&ScriptDebugServer::dispatchDidPause);
+    didPause(vmEntryGlobalObject);
+
+    m_doneProcessingDebuggerEvents = false;
+    runEventLoopWhilePaused();
+
+    didContinue(vmEntryGlobalObject);
+    dispatchFunctionToListeners(&ScriptDebugServer::dispatchDidContinue);
+}
+
+const BreakpointActions& ScriptDebugServer::getActionsForBreakpoint(JSC::BreakpointID breakpointID)
+{
+    ASSERT(breakpointID != JSC::noBreakpointID);
+
+    if (m_breakpointIDToActions.contains(breakpointID))
+        return m_breakpointIDToActions.find(breakpointID)->value;
+    
+    static NeverDestroyed<BreakpointActions> emptyActionVector = BreakpointActions();
+    return emptyActionVector;
+}
+
+Deprecated::ScriptValue ScriptDebugServer::exceptionOrCaughtValue(JSC::ExecState* state)
+{
+    if (reasonForPause() == PausedForException)
+        return Deprecated::ScriptValue(state->vm(), currentException());
+
+    RefPtr<DebuggerCallFrame> debuggerCallFrame = currentDebuggerCallFrame();
+    while (debuggerCallFrame) {
+        DebuggerScope* scope = debuggerCallFrame->scope();
+        if (scope->isCatchScope())
+            return Deprecated::ScriptValue(state->vm(), scope->caughtValue(state));
+        debuggerCallFrame = debuggerCallFrame->callerFrame();
+    }
+
+    return Deprecated::ScriptValue();
+}
+
+} // namespace Inspector