Source/core/inspector/InspectorDebuggerAgent.cpp

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This source file includes following definitions.
breakpointIdSuffix
generateBreakpointId
m_skipAllPauses
init
enable
disable
enabled
enable
disable
compileSkipCallFramePattern
restore
setFrontend
clearFrontend
setBreakpointsActive
setSkipAllPauses
pageDidCommitLoad
isPaused
runningNestedMessageLoop
addMessageToConsole
addMessageToConsole
addMessageToConsole
preprocessEventListener
preprocess
buildObjectForBreakpointCookie
matches
setBreakpointByUrl
parseLocation
setBreakpoint
removeBreakpoint
removeBreakpoint
continueToLocation
getStepInPositions
getBacktrace
scriptURL
shouldSkipExceptionPause
shouldSkipBreakpointPause
shouldSkipStepPause
resolveBreakpoint
scriptToInspectorObject
searchInContent
setScriptSource
restartFrame
getScriptSource
getFunctionDetails
schedulePauseOnNextStatement
cancelPauseOnNextStatement
didInstallTimer
didRemoveTimer
willFireTimer
didFireTimer
didRequestAnimationFrame
didCancelAnimationFrame
willFireAnimationFrame
didFireAnimationFrame
didAddEventListener
didRemoveEventListener
didRemoveAllEventListeners
willHandleEvent
didHandleEvent
willLoadXHR
didEnqueueMutationRecord
didClearAllMutationRecords
willDeliverMutationRecords
didDeliverMutationRecords
didPostPromiseTask
willPerformPromiseTask
didPerformPromiseTask
isPromiseTrackerEnabled
didCreatePromise
didUpdatePromiseParent
didUpdatePromiseState
pause
resume
resolveCallFrame
stepOver
stepInto
stepOut
setPauseOnExceptions
setPauseOnExceptionsImpl
evaluateOnCallFrame
compileScript
runScript
setOverlayMessage
setVariableValue
skipStackFrames
setAsyncCallStackDepth
scriptExecutionBlockedByCSP
currentCallFrames
currentAsyncStackTrace
sourceMapURLForScript
didParseSource
failedToParseSource
didPause
didContinue
canBreakProgram
breakProgram
clear
assertPaused
clearBreakDetails
setBreakpoint
removeBreakpoint
reset
/*
 * Copyright (C) 2010 Apple Inc. All rights reserved.
 * Copyright (C) 2013 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:
 *
 * 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 Computer, 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 "core/inspector/InspectorDebuggerAgent.h"
#include "core/inspector/JavaScriptCallFrame.h"

#include "bindings/v8/ScriptDebugServer.h"
#include "bindings/v8/ScriptObject.h"
#include "bindings/v8/ScriptRegexp.h"
#include "bindings/v8/ScriptSourceCode.h"
#include "core/dom/Document.h"
#include "core/fetch/Resource.h"
#include "core/inspector/ContentSearchUtils.h"
#include "core/inspector/InjectedScriptManager.h"
#include "core/inspector/InspectorPageAgent.h"
#include "core/inspector/InspectorState.h"
#include "core/inspector/InstrumentingAgents.h"
#include "core/inspector/ScriptArguments.h"
#include "core/inspector/ScriptCallStack.h"
#include "platform/JSONValues.h"
#include "wtf/text/WTFString.h"

using WebCore::TypeBuilder::Array;
using WebCore::TypeBuilder::Debugger::BreakpointId;
using WebCore::TypeBuilder::Debugger::CallFrame;
using WebCore::TypeBuilder::Debugger::FunctionDetails;
using WebCore::TypeBuilder::Debugger::ScriptId;
using WebCore::TypeBuilder::Debugger::StackTrace;
using WebCore::TypeBuilder::Runtime::RemoteObject;

namespace WebCore {

namespace DebuggerAgentState {
static const char debuggerEnabled[] = "debuggerEnabled";
static const char javaScriptBreakpoints[] = "javaScriptBreakopints";
static const char pauseOnExceptionsState[] = "pauseOnExceptionsState";
static const char asyncCallStackDepth[] = "asyncCallStackDepth";

// Breakpoint properties.
static const char url[] = "url";
static const char isRegex[] = "isRegex";
static const char lineNumber[] = "lineNumber";
static const char columnNumber[] = "columnNumber";
static const char condition[] = "condition";
static const char isAnti[] = "isAnti";
static const char skipStackPattern[] = "skipStackPattern";
static const char skipAllPauses[] = "skipAllPauses";
static const char skipAllPausesExpiresOnReload[] = "skipAllPausesExpiresOnReload";

};

static const int numberOfStepsBeforeStepOut = 20;

const char InspectorDebuggerAgent::backtraceObjectGroup[] = "backtrace";

static String breakpointIdSuffix(InspectorDebuggerAgent::BreakpointSource source)
{
    switch (source) {
    case InspectorDebuggerAgent::UserBreakpointSource:
        break;
    case InspectorDebuggerAgent::DebugCommandBreakpointSource:
        return ":debug";
    case InspectorDebuggerAgent::MonitorCommandBreakpointSource:
        return ":monitor";
    }
    return String();
}

static String generateBreakpointId(const String& scriptId, int lineNumber, int columnNumber, InspectorDebuggerAgent::BreakpointSource source)
{
    return scriptId + ':' + String::number(lineNumber) + ':' + String::number(columnNumber) + breakpointIdSuffix(source);
}

InspectorDebuggerAgent::InspectorDebuggerAgent(InjectedScriptManager* injectedScriptManager)
    : InspectorBaseAgent<InspectorDebuggerAgent>("Debugger")
    , m_injectedScriptManager(injectedScriptManager)
    , m_frontend(0)
    , m_pausedScriptState(0)
    , m_javaScriptPauseScheduled(false)
    , m_listener(0)
    , m_skipStepInCount(numberOfStepsBeforeStepOut)
    , m_skipAllPauses(false)
{
}

InspectorDebuggerAgent::~InspectorDebuggerAgent()
{
    ASSERT(!m_instrumentingAgents->inspectorDebuggerAgent());
}

void InspectorDebuggerAgent::init()
{
    // FIXME: make breakReason optional so that there was no need to init it with "other".
    clearBreakDetails();
    m_state->setLong(DebuggerAgentState::pauseOnExceptionsState, ScriptDebugServer::DontPauseOnExceptions);
}

void InspectorDebuggerAgent::enable()
{
    m_instrumentingAgents->setInspectorDebuggerAgent(this);

    // FIXME(WK44513): breakpoints activated flag should be synchronized between all front-ends
    scriptDebugServer().setBreakpointsActivated(true);
    startListeningScriptDebugServer();

    if (m_listener)
        m_listener->debuggerWasEnabled();
}

void InspectorDebuggerAgent::disable()
{
    m_state->setObject(DebuggerAgentState::javaScriptBreakpoints, JSONObject::create());
    m_state->setLong(DebuggerAgentState::pauseOnExceptionsState, ScriptDebugServer::DontPauseOnExceptions);
    m_state->setString(DebuggerAgentState::skipStackPattern, "");
    m_state->setLong(DebuggerAgentState::asyncCallStackDepth, 0);
    m_instrumentingAgents->setInspectorDebuggerAgent(0);

    stopListeningScriptDebugServer();
    scriptDebugServer().clearBreakpoints();
    scriptDebugServer().clearCompiledScripts();
    clear();

    if (m_listener)
        m_listener->debuggerWasDisabled();

    m_skipAllPauses = false;
}

bool InspectorDebuggerAgent::enabled()
{
    return m_state->getBoolean(DebuggerAgentState::debuggerEnabled);
}

void InspectorDebuggerAgent::enable(ErrorString*)
{
    if (enabled())
        return;

    enable();
    m_state->setBoolean(DebuggerAgentState::debuggerEnabled, true);

    ASSERT(m_frontend);
}

void InspectorDebuggerAgent::disable(ErrorString*)
{
    if (!enabled())
        return;

    disable();
    m_state->setBoolean(DebuggerAgentState::debuggerEnabled, false);
}

static PassOwnPtr<ScriptRegexp> compileSkipCallFramePattern(String patternText)
{
    if (patternText.isEmpty())
        return nullptr;
    OwnPtr<ScriptRegexp> result = adoptPtr(new ScriptRegexp(patternText, TextCaseSensitive));
    if (!result->isValid())
        result.clear();
    return result.release();
}

void InspectorDebuggerAgent::restore()
{
    if (enabled()) {
        m_frontend->globalObjectCleared();
        enable();
        long pauseState = m_state->getLong(DebuggerAgentState::pauseOnExceptionsState);
        String error;
        setPauseOnExceptionsImpl(&error, pauseState);
        m_cachedSkipStackRegExp = compileSkipCallFramePattern(m_state->getString(DebuggerAgentState::skipStackPattern));
        m_skipAllPauses = m_state->getBoolean(DebuggerAgentState::skipAllPauses);
        if (m_skipAllPauses && m_state->getBoolean(DebuggerAgentState::skipAllPausesExpiresOnReload)) {
            m_skipAllPauses = false;
            m_state->setBoolean(DebuggerAgentState::skipAllPauses, false);
        }
        m_asyncCallStackTracker.setAsyncCallStackDepth(m_state->getLong(DebuggerAgentState::asyncCallStackDepth));
    }
}

void InspectorDebuggerAgent::setFrontend(InspectorFrontend* frontend)
{
    m_frontend = frontend->debugger();
}

void InspectorDebuggerAgent::clearFrontend()
{
    m_frontend = 0;

    if (!enabled())
        return;

    disable();

    // FIXME: due to m_state->mute() hack in InspectorController, debuggerEnabled is actually set to false only
    // in InspectorState, but not in cookie. That's why after navigation debuggerEnabled will be true,
    // but after front-end re-open it will still be false.
    m_state->setBoolean(DebuggerAgentState::debuggerEnabled, false);
}

void InspectorDebuggerAgent::setBreakpointsActive(ErrorString*, bool active)
{
    scriptDebugServer().setBreakpointsActivated(active);
}

void InspectorDebuggerAgent::setSkipAllPauses(ErrorString*, bool skipped, const bool* untilReload)
{
    m_skipAllPauses = skipped;
    bool untilReloadValue = untilReload && *untilReload;
    m_state->setBoolean(DebuggerAgentState::skipAllPauses, m_skipAllPauses);
    m_state->setBoolean(DebuggerAgentState::skipAllPausesExpiresOnReload, untilReloadValue);
}

void InspectorDebuggerAgent::pageDidCommitLoad()
{
    if (m_state->getBoolean(DebuggerAgentState::skipAllPausesExpiresOnReload)) {
        m_skipAllPauses = false;
        m_state->setBoolean(DebuggerAgentState::skipAllPauses, m_skipAllPauses);
    }
}

bool InspectorDebuggerAgent::isPaused()
{
    return scriptDebugServer().isPaused();
}

bool InspectorDebuggerAgent::runningNestedMessageLoop()
{
    return scriptDebugServer().runningNestedMessageLoop();
}

void InspectorDebuggerAgent::addMessageToConsole(MessageSource source, MessageType type)
{
    if (source == ConsoleAPIMessageSource && type == AssertMessageType && scriptDebugServer().pauseOnExceptionsState() != ScriptDebugServer::DontPauseOnExceptions)
        breakProgram(InspectorFrontend::Debugger::Reason::Assert, nullptr);
}

void InspectorDebuggerAgent::addMessageToConsole(MessageSource source, MessageType type, MessageLevel, const String&, ScriptCallStack*, unsigned long)
{
    addMessageToConsole(source, type);
}

void InspectorDebuggerAgent::addMessageToConsole(MessageSource source, MessageType type, MessageLevel, const String&, ScriptState*, ScriptArguments*, unsigned long)
{
    addMessageToConsole(source, type);
}

String InspectorDebuggerAgent::preprocessEventListener(LocalFrame* frame, const String& source, const String& url, const String& functionName)
{
    return scriptDebugServer().preprocessEventListener(frame, source, url, functionName);
}

PassOwnPtr<ScriptSourceCode> InspectorDebuggerAgent::preprocess(LocalFrame* frame, const ScriptSourceCode& sourceCode)
{
    return scriptDebugServer().preprocess(frame, sourceCode);
}

static PassRefPtr<JSONObject> buildObjectForBreakpointCookie(const String& url, int lineNumber, int columnNumber, const String& condition, bool isRegex, bool isAnti)
{
    RefPtr<JSONObject> breakpointObject = JSONObject::create();
    breakpointObject->setString(DebuggerAgentState::url, url);
    breakpointObject->setNumber(DebuggerAgentState::lineNumber, lineNumber);
    breakpointObject->setNumber(DebuggerAgentState::columnNumber, columnNumber);
    breakpointObject->setString(DebuggerAgentState::condition, condition);
    breakpointObject->setBoolean(DebuggerAgentState::isRegex, isRegex);
    breakpointObject->setBoolean(DebuggerAgentState::isAnti, isAnti);
    return breakpointObject;
}

static bool matches(const String& url, const String& pattern, bool isRegex)
{
    if (isRegex) {
        ScriptRegexp regex(pattern, TextCaseSensitive);
        return regex.match(url) != -1;
    }
    return url == pattern;
}

void InspectorDebuggerAgent::setBreakpointByUrl(ErrorString* errorString, int lineNumber, const String* const optionalURL, const String* const optionalURLRegex, const int* const optionalColumnNumber, const String* const optionalCondition, const bool* isAntiBreakpoint, BreakpointId* outBreakpointId, RefPtr<Array<TypeBuilder::Debugger::Location> >& locations)
{
    locations = Array<TypeBuilder::Debugger::Location>::create();
    if (!optionalURL == !optionalURLRegex) {
        *errorString = "Either url or urlRegex must be specified.";
        return;
    }

    bool isAntiBreakpointValue = isAntiBreakpoint && *isAntiBreakpoint;

    String url = optionalURL ? *optionalURL : *optionalURLRegex;
    int columnNumber;
    if (optionalColumnNumber) {
        columnNumber = *optionalColumnNumber;
        if (columnNumber < 0) {
            *errorString = "Incorrect column number";
            return;
        }
    } else {
        columnNumber = isAntiBreakpointValue ? -1 : 0;
    }
    String condition = optionalCondition ? *optionalCondition : "";
    bool isRegex = optionalURLRegex;

    String breakpointId = (isRegex ? "/" + url + "/" : url) + ':' + String::number(lineNumber) + ':' + String::number(columnNumber);
    RefPtr<JSONObject> breakpointsCookie = m_state->getObject(DebuggerAgentState::javaScriptBreakpoints);
    if (breakpointsCookie->find(breakpointId) != breakpointsCookie->end()) {
        *errorString = "Breakpoint at specified location already exists.";
        return;
    }

    breakpointsCookie->setObject(breakpointId, buildObjectForBreakpointCookie(url, lineNumber, columnNumber, condition, isRegex, isAntiBreakpointValue));
    m_state->setObject(DebuggerAgentState::javaScriptBreakpoints, breakpointsCookie);

    if (!isAntiBreakpointValue) {
        ScriptBreakpoint breakpoint(lineNumber, columnNumber, condition);
        for (ScriptsMap::iterator it = m_scripts.begin(); it != m_scripts.end(); ++it) {
            if (!matches(it->value.url, url, isRegex))
                continue;
            RefPtr<TypeBuilder::Debugger::Location> location = resolveBreakpoint(breakpointId, it->key, breakpoint, UserBreakpointSource);
            if (location)
                locations->addItem(location);
        }
    }
    *outBreakpointId = breakpointId;
}

static bool parseLocation(ErrorString* errorString, PassRefPtr<JSONObject> location, String* scriptId, int* lineNumber, int* columnNumber)
{
    if (!location->getString("scriptId", scriptId) || !location->getNumber("lineNumber", lineNumber)) {
        // FIXME: replace with input validation.
        *errorString = "scriptId and lineNumber are required.";
        return false;
    }
    *columnNumber = 0;
    location->getNumber("columnNumber", columnNumber);
    return true;
}

void InspectorDebuggerAgent::setBreakpoint(ErrorString* errorString, const RefPtr<JSONObject>& location, const String* const optionalCondition, BreakpointId* outBreakpointId, RefPtr<TypeBuilder::Debugger::Location>& actualLocation)
{
    String scriptId;
    int lineNumber;
    int columnNumber;

    if (!parseLocation(errorString, location, &scriptId, &lineNumber, &columnNumber))
        return;

    String condition = optionalCondition ? *optionalCondition : emptyString();

    String breakpointId = generateBreakpointId(scriptId, lineNumber, columnNumber, UserBreakpointSource);
    if (m_breakpointIdToDebugServerBreakpointIds.find(breakpointId) != m_breakpointIdToDebugServerBreakpointIds.end()) {
        *errorString = "Breakpoint at specified location already exists.";
        return;
    }
    ScriptBreakpoint breakpoint(lineNumber, columnNumber, condition);
    actualLocation = resolveBreakpoint(breakpointId, scriptId, breakpoint, UserBreakpointSource);
    if (actualLocation)
        *outBreakpointId = breakpointId;
    else
        *errorString = "Could not resolve breakpoint";
}

void InspectorDebuggerAgent::removeBreakpoint(ErrorString*, const String& breakpointId)
{
    RefPtr<JSONObject> breakpointsCookie = m_state->getObject(DebuggerAgentState::javaScriptBreakpoints);
    JSONObject::iterator it = breakpointsCookie->find(breakpointId);
    bool isAntibreakpoint = false;
    if (it != breakpointsCookie->end()) {
        RefPtr<JSONObject> breakpointObject = it->value->asObject();
        breakpointObject->getBoolean(DebuggerAgentState::isAnti, &isAntibreakpoint);
        breakpointsCookie->remove(breakpointId);
        m_state->setObject(DebuggerAgentState::javaScriptBreakpoints, breakpointsCookie);
    }

    if (!isAntibreakpoint)
        removeBreakpoint(breakpointId);
}

void InspectorDebuggerAgent::removeBreakpoint(const String& breakpointId)
{
    BreakpointIdToDebugServerBreakpointIdsMap::iterator debugServerBreakpointIdsIterator = m_breakpointIdToDebugServerBreakpointIds.find(breakpointId);
    if (debugServerBreakpointIdsIterator == m_breakpointIdToDebugServerBreakpointIds.end())
        return;
    for (size_t i = 0; i < debugServerBreakpointIdsIterator->value.size(); ++i) {
        const String& debugServerBreakpointId = debugServerBreakpointIdsIterator->value[i];
        scriptDebugServer().removeBreakpoint(debugServerBreakpointId);
        m_serverBreakpoints.remove(debugServerBreakpointId);
    }
    m_breakpointIdToDebugServerBreakpointIds.remove(debugServerBreakpointIdsIterator);
}

void InspectorDebuggerAgent::continueToLocation(ErrorString* errorString, const RefPtr<JSONObject>& location, const bool* interstateLocationOpt)
{
    bool interstateLocation = interstateLocationOpt ? *interstateLocationOpt : false;
    if (!m_continueToLocationBreakpointId.isEmpty()) {
        scriptDebugServer().removeBreakpoint(m_continueToLocationBreakpointId);
        m_continueToLocationBreakpointId = "";
    }

    String scriptId;
    int lineNumber;
    int columnNumber;

    if (!parseLocation(errorString, location, &scriptId, &lineNumber, &columnNumber))
        return;

    ScriptBreakpoint breakpoint(lineNumber, columnNumber, "");
    m_continueToLocationBreakpointId = scriptDebugServer().setBreakpoint(scriptId, breakpoint, &lineNumber, &columnNumber, interstateLocation);
    resume(errorString);
}

void InspectorDebuggerAgent::getStepInPositions(ErrorString* errorString, const String& callFrameId, RefPtr<Array<TypeBuilder::Debugger::Location> >& positions)
{
    if (!isPaused() || m_currentCallStack.hasNoValue()) {
        *errorString = "Attempt to access callframe when debugger is not on pause";
        return;
    }
    InjectedScript injectedScript = m_injectedScriptManager->injectedScriptForObjectId(callFrameId);
    if (injectedScript.hasNoValue()) {
        *errorString = "Inspected frame has gone";
        return;
    }

    injectedScript.getStepInPositions(errorString, m_currentCallStack, callFrameId, positions);
}

void InspectorDebuggerAgent::getBacktrace(ErrorString* errorString, RefPtr<Array<CallFrame> >& callFrames, RefPtr<StackTrace>& asyncStackTrace)
{
    if (!assertPaused(errorString))
        return;
    m_currentCallStack = scriptDebugServer().currentCallFrames();
    callFrames = currentCallFrames();
    asyncStackTrace = currentAsyncStackTrace();
}

String InspectorDebuggerAgent::scriptURL(JavaScriptCallFrame* frame)
{
    String scriptIdString = String::number(frame->sourceID());
    ScriptsMap::iterator it = m_scripts.find(scriptIdString);
    if (it == m_scripts.end())
        return String();
    return it->value.url;
}

ScriptDebugListener::SkipPauseRequest InspectorDebuggerAgent::shouldSkipExceptionPause(RefPtr<JavaScriptCallFrame>& topFrame)
{
    if (m_skipAllPauses)
        return ScriptDebugListener::Continue;
    if (!topFrame)
        return ScriptDebugListener::NoSkip;

    String topFrameScriptUrl = scriptURL(topFrame.get());
    if (m_cachedSkipStackRegExp && !topFrameScriptUrl.isEmpty() && m_cachedSkipStackRegExp->match(topFrameScriptUrl) != -1)
        return ScriptDebugListener::Continue;

    // Match against breakpoints.
    if (topFrameScriptUrl.isEmpty())
        return ScriptDebugListener::NoSkip;

    // Prepare top frame parameters.
    int topFrameLineNumber = topFrame->line();
    int topFrameColumnNumber = topFrame->column();

    RefPtr<JSONObject> breakpointsCookie = m_state->getObject(DebuggerAgentState::javaScriptBreakpoints);
    for (JSONObject::iterator it = breakpointsCookie->begin(); it != breakpointsCookie->end(); ++it) {
        RefPtr<JSONObject> breakpointObject = it->value->asObject();
        bool isAntibreakpoint;
        breakpointObject->getBoolean(DebuggerAgentState::isAnti, &isAntibreakpoint);
        if (!isAntibreakpoint)
            continue;

        int breakLineNumber;
        breakpointObject->getNumber(DebuggerAgentState::lineNumber, &breakLineNumber);
        int breakColumnNumber;
        breakpointObject->getNumber(DebuggerAgentState::columnNumber, &breakColumnNumber);

        if (breakLineNumber != topFrameLineNumber)
            continue;

        if (breakColumnNumber != -1 && breakColumnNumber != topFrameColumnNumber)
            continue;

        bool isRegex;
        breakpointObject->getBoolean(DebuggerAgentState::isRegex, &isRegex);
        String url;
        breakpointObject->getString(DebuggerAgentState::url, &url);
        if (!matches(topFrameScriptUrl, url, isRegex))
            continue;

        return ScriptDebugListener::Continue;
    }

    return ScriptDebugListener::NoSkip;
}

ScriptDebugListener::SkipPauseRequest InspectorDebuggerAgent::shouldSkipBreakpointPause(RefPtr<JavaScriptCallFrame>& topFrame)
{
    if (m_skipAllPauses)
        return ScriptDebugListener::Continue;
    if (!topFrame)
        return ScriptDebugListener::NoSkip;
    return ScriptDebugListener::NoSkip;
}

ScriptDebugListener::SkipPauseRequest InspectorDebuggerAgent::shouldSkipStepPause(RefPtr<JavaScriptCallFrame>& topFrame)
{
    if (m_skipAllPauses)
        return ScriptDebugListener::Continue;
    if (!topFrame)
        return ScriptDebugListener::NoSkip;

    if (m_cachedSkipStackRegExp) {
        String scriptUrl = scriptURL(topFrame.get());
        if (!scriptUrl.isEmpty() && m_cachedSkipStackRegExp->match(scriptUrl) != -1) {
            if (m_skipStepInCount > 0) {
                --m_skipStepInCount;
                return ScriptDebugListener::StepInto;
            }
            return ScriptDebugListener::StepOut;
        }
    }
    return ScriptDebugListener::NoSkip;
}

PassRefPtr<TypeBuilder::Debugger::Location> InspectorDebuggerAgent::resolveBreakpoint(const String& breakpointId, const String& scriptId, const ScriptBreakpoint& breakpoint, BreakpointSource source)
{
    ScriptsMap::iterator scriptIterator = m_scripts.find(scriptId);
    if (scriptIterator == m_scripts.end())
        return nullptr;
    Script& script = scriptIterator->value;
    if (breakpoint.lineNumber < script.startLine || script.endLine < breakpoint.lineNumber)
        return nullptr;

    int actualLineNumber;
    int actualColumnNumber;
    String debugServerBreakpointId = scriptDebugServer().setBreakpoint(scriptId, breakpoint, &actualLineNumber, &actualColumnNumber, false);
    if (debugServerBreakpointId.isEmpty())
        return nullptr;

    m_serverBreakpoints.set(debugServerBreakpointId, std::make_pair(breakpointId, source));

    BreakpointIdToDebugServerBreakpointIdsMap::iterator debugServerBreakpointIdsIterator = m_breakpointIdToDebugServerBreakpointIds.find(breakpointId);
    if (debugServerBreakpointIdsIterator == m_breakpointIdToDebugServerBreakpointIds.end())
        m_breakpointIdToDebugServerBreakpointIds.set(breakpointId, Vector<String>()).storedValue->value.append(debugServerBreakpointId);
    else
        debugServerBreakpointIdsIterator->value.append(debugServerBreakpointId);

    RefPtr<TypeBuilder::Debugger::Location> location = TypeBuilder::Debugger::Location::create()
        .setScriptId(scriptId)
        .setLineNumber(actualLineNumber);
    location->setColumnNumber(actualColumnNumber);
    return location;
}

static PassRefPtr<JSONObject> scriptToInspectorObject(ScriptObject scriptObject)
{
    if (scriptObject.hasNoValue())
        return nullptr;
    RefPtr<JSONValue> value = scriptObject.toJSONValue(scriptObject.scriptState());
    if (!value)
        return nullptr;
    return value->asObject();
}

void InspectorDebuggerAgent::searchInContent(ErrorString* error, const String& scriptId, const String& query, const bool* const optionalCaseSensitive, const bool* const optionalIsRegex, RefPtr<Array<WebCore::TypeBuilder::Page::SearchMatch> >& results)
{
    bool isRegex = optionalIsRegex ? *optionalIsRegex : false;
    bool caseSensitive = optionalCaseSensitive ? *optionalCaseSensitive : false;

    ScriptsMap::iterator it = m_scripts.find(scriptId);
    if (it != m_scripts.end())
        results = ContentSearchUtils::searchInTextByLines(it->value.source, query, caseSensitive, isRegex);
    else
        *error = "No script for id: " + scriptId;
}

void InspectorDebuggerAgent::setScriptSource(ErrorString* error, RefPtr<TypeBuilder::Debugger::SetScriptSourceError>& errorData, const String& scriptId, const String& newContent, const bool* const preview, RefPtr<Array<CallFrame> >& newCallFrames, RefPtr<JSONObject>& result, RefPtr<StackTrace>& asyncStackTrace)
{
    bool previewOnly = preview && *preview;
    ScriptObject resultObject;
    if (!scriptDebugServer().setScriptSource(scriptId, newContent, previewOnly, error, errorData, &m_currentCallStack, &resultObject))
        return;
    newCallFrames = currentCallFrames();
    asyncStackTrace = currentAsyncStackTrace();
    RefPtr<JSONObject> object = scriptToInspectorObject(resultObject);
    if (object)
        result = object;
}

void InspectorDebuggerAgent::restartFrame(ErrorString* errorString, const String& callFrameId, RefPtr<Array<CallFrame> >& newCallFrames, RefPtr<JSONObject>& result, RefPtr<StackTrace>& asyncStackTrace)
{
    if (!isPaused() || m_currentCallStack.hasNoValue()) {
        *errorString = "Attempt to access callframe when debugger is not on pause";
        return;
    }
    InjectedScript injectedScript = m_injectedScriptManager->injectedScriptForObjectId(callFrameId);
    if (injectedScript.hasNoValue()) {
        *errorString = "Inspected frame has gone";
        return;
    }

    injectedScript.restartFrame(errorString, m_currentCallStack, callFrameId, &result);
    m_currentCallStack = scriptDebugServer().currentCallFrames();
    newCallFrames = currentCallFrames();
    asyncStackTrace = currentAsyncStackTrace();
}

void InspectorDebuggerAgent::getScriptSource(ErrorString* error, const String& scriptId, String* scriptSource)
{
    ScriptsMap::iterator it = m_scripts.find(scriptId);
    if (it != m_scripts.end())
        *scriptSource = it->value.source;
    else
        *error = "No script for id: " + scriptId;
}

void InspectorDebuggerAgent::getFunctionDetails(ErrorString* errorString, const String& functionId, RefPtr<FunctionDetails>& details)
{
    InjectedScript injectedScript = m_injectedScriptManager->injectedScriptForObjectId(functionId);
    if (injectedScript.hasNoValue()) {
        *errorString = "Function object id is obsolete";
        return;
    }
    injectedScript.getFunctionDetails(errorString, functionId, &details);
}

void InspectorDebuggerAgent::schedulePauseOnNextStatement(InspectorFrontend::Debugger::Reason::Enum breakReason, PassRefPtr<JSONObject> data)
{
    if (m_javaScriptPauseScheduled)
        return;
    m_breakReason = breakReason;
    m_breakAuxData = data;
    scriptDebugServer().setPauseOnNextStatement(true);
}

void InspectorDebuggerAgent::cancelPauseOnNextStatement()
{
    if (m_javaScriptPauseScheduled)
        return;
    clearBreakDetails();
    scriptDebugServer().setPauseOnNextStatement(false);
}

void InspectorDebuggerAgent::didInstallTimer(ExecutionContext* context, int timerId, int timeout, bool singleShot)
{
    if (m_asyncCallStackTracker.isEnabled())
        m_asyncCallStackTracker.didInstallTimer(context, timerId, singleShot, scriptDebugServer().currentCallFramesForAsyncStack());
}

void InspectorDebuggerAgent::didRemoveTimer(ExecutionContext* context, int timerId)
{
    if (m_asyncCallStackTracker.isEnabled())
        m_asyncCallStackTracker.didRemoveTimer(context, timerId);
}

bool InspectorDebuggerAgent::willFireTimer(ExecutionContext* context, int timerId)
{
    if (m_asyncCallStackTracker.isEnabled())
        m_asyncCallStackTracker.willFireTimer(context, timerId);
    return true;
}

void InspectorDebuggerAgent::didFireTimer()
{
    if (m_asyncCallStackTracker.isEnabled())
        m_asyncCallStackTracker.didFireAsyncCall();
    cancelPauseOnNextStatement();
}

void InspectorDebuggerAgent::didRequestAnimationFrame(Document* document, int callbackId)
{
    if (m_asyncCallStackTracker.isEnabled())
        m_asyncCallStackTracker.didRequestAnimationFrame(document, callbackId, scriptDebugServer().currentCallFramesForAsyncStack());
}

void InspectorDebuggerAgent::didCancelAnimationFrame(Document* document, int callbackId)
{
    if (m_asyncCallStackTracker.isEnabled())
        m_asyncCallStackTracker.didCancelAnimationFrame(document, callbackId);
}

bool InspectorDebuggerAgent::willFireAnimationFrame(Document* document, int callbackId)
{
    if (m_asyncCallStackTracker.isEnabled())
        m_asyncCallStackTracker.willFireAnimationFrame(document, callbackId);
    return true;
}

void InspectorDebuggerAgent::didFireAnimationFrame()
{
    if (m_asyncCallStackTracker.isEnabled())
        m_asyncCallStackTracker.didFireAsyncCall();
}

void InspectorDebuggerAgent::didAddEventListener(EventTarget* eventTarget, const AtomicString& eventType, EventListener* listener, bool useCapture)
{
    if (m_asyncCallStackTracker.isEnabled())
        m_asyncCallStackTracker.didAddEventListener(eventTarget, eventType, listener, useCapture, scriptDebugServer().currentCallFramesForAsyncStack());
}

void InspectorDebuggerAgent::didRemoveEventListener(EventTarget* eventTarget, const AtomicString& eventType, EventListener* listener, bool useCapture)
{
    if (m_asyncCallStackTracker.isEnabled())
        m_asyncCallStackTracker.didRemoveEventListener(eventTarget, eventType, listener, useCapture);
}

void InspectorDebuggerAgent::didRemoveAllEventListeners(EventTarget* eventTarget)
{
    if (m_asyncCallStackTracker.isEnabled())
        m_asyncCallStackTracker.didRemoveAllEventListeners(eventTarget);
}

void InspectorDebuggerAgent::willHandleEvent(EventTarget* eventTarget, const AtomicString& eventType, EventListener* listener, bool useCapture)
{
    if (m_asyncCallStackTracker.isEnabled())
        m_asyncCallStackTracker.willHandleEvent(eventTarget, eventType, listener, useCapture);
}

void InspectorDebuggerAgent::didHandleEvent()
{
    if (m_asyncCallStackTracker.isEnabled())
        m_asyncCallStackTracker.didFireAsyncCall();
    cancelPauseOnNextStatement();
}

void InspectorDebuggerAgent::willLoadXHR(XMLHttpRequest* xhr, ThreadableLoaderClient*, const AtomicString&, const KURL&, bool async, FormData*, const HTTPHeaderMap&, bool)
{
    if (m_asyncCallStackTracker.isEnabled() && async)
        m_asyncCallStackTracker.willLoadXHR(xhr, scriptDebugServer().currentCallFramesForAsyncStack());
}

void InspectorDebuggerAgent::didEnqueueMutationRecord(ExecutionContext* context, MutationObserver* observer)
{
    if (m_asyncCallStackTracker.isEnabled() && !m_asyncCallStackTracker.hasEnqueuedMutationRecord(context, observer))
        m_asyncCallStackTracker.didEnqueueMutationRecord(context, observer, scriptDebugServer().currentCallFramesForAsyncStack());
}

void InspectorDebuggerAgent::didClearAllMutationRecords(ExecutionContext* context, MutationObserver* observer)
{
    if (m_asyncCallStackTracker.isEnabled())
        m_asyncCallStackTracker.didClearAllMutationRecords(context, observer);
}

void InspectorDebuggerAgent::willDeliverMutationRecords(ExecutionContext* context, MutationObserver* observer)
{
    if (m_asyncCallStackTracker.isEnabled())
        m_asyncCallStackTracker.willDeliverMutationRecords(context, observer);
}

void InspectorDebuggerAgent::didDeliverMutationRecords()
{
    if (m_asyncCallStackTracker.isEnabled())
        m_asyncCallStackTracker.didFireAsyncCall();
}

void InspectorDebuggerAgent::didPostPromiseTask(ExecutionContext* context, ExecutionContextTask* task, bool isResolved)
{
    if (m_asyncCallStackTracker.isEnabled())
        m_asyncCallStackTracker.didPostPromiseTask(context, task, isResolved, scriptDebugServer().currentCallFramesForAsyncStack());
}

void InspectorDebuggerAgent::willPerformPromiseTask(ExecutionContext* context, ExecutionContextTask* task)
{
    if (m_asyncCallStackTracker.isEnabled())
        m_asyncCallStackTracker.willPerformPromiseTask(context, task);
}

void InspectorDebuggerAgent::didPerformPromiseTask()
{
    if (m_asyncCallStackTracker.isEnabled())
        m_asyncCallStackTracker.didFireAsyncCall();
}

bool InspectorDebuggerAgent::isPromiseTrackerEnabled()
{
    return m_promiseTracker.isEnabled();
}

void InspectorDebuggerAgent::didCreatePromise(const ScriptObject& promise)
{
    if (m_promiseTracker.isEnabled())
        m_promiseTracker.didCreatePromise(promise);
}

void InspectorDebuggerAgent::didUpdatePromiseParent(const ScriptObject& promise, const ScriptObject& parentPromise)
{
    if (m_promiseTracker.isEnabled())
        m_promiseTracker.didUpdatePromiseParent(promise, parentPromise);
}

void InspectorDebuggerAgent::didUpdatePromiseState(const ScriptObject& promise, V8PromiseCustom::PromiseState state, const ScriptValue& result)
{
    if (m_promiseTracker.isEnabled())
        m_promiseTracker.didUpdatePromiseState(promise, state, result);
}

void InspectorDebuggerAgent::pause(ErrorString*)
{
    if (m_javaScriptPauseScheduled)
        return;
    clearBreakDetails();
    scriptDebugServer().setPauseOnNextStatement(true);
    m_javaScriptPauseScheduled = true;
}

void InspectorDebuggerAgent::resume(ErrorString* errorString)
{
    if (!assertPaused(errorString))
        return;
    m_injectedScriptManager->releaseObjectGroup(InspectorDebuggerAgent::backtraceObjectGroup);
    scriptDebugServer().continueProgram();
}

ScriptValue InspectorDebuggerAgent::resolveCallFrame(ErrorString* errorString, const String* callFrameId)
{
    if (!callFrameId)
        return ScriptValue();
    if (!isPaused() || m_currentCallStack.hasNoValue()) {
        *errorString = "Attempt to access callframe when debugger is not on pause";
        return ScriptValue();
    }
    InjectedScript injectedScript = m_injectedScriptManager->injectedScriptForObjectId(*callFrameId);
    if (injectedScript.hasNoValue()) {
        *errorString = "Inspected frame has gone";
        return ScriptValue();
    }
    return injectedScript.findCallFrameById(errorString, m_currentCallStack, *callFrameId);
}

void InspectorDebuggerAgent::stepOver(ErrorString* errorString, const String* callFrameId)
{
    if (!assertPaused(errorString))
        return;
    ScriptValue frame = resolveCallFrame(errorString, callFrameId);
    if (!errorString->isEmpty())
        return;
    m_injectedScriptManager->releaseObjectGroup(InspectorDebuggerAgent::backtraceObjectGroup);
    scriptDebugServer().stepOverStatement(frame);
}

void InspectorDebuggerAgent::stepInto(ErrorString* errorString)
{
    if (!assertPaused(errorString))
        return;
    m_injectedScriptManager->releaseObjectGroup(InspectorDebuggerAgent::backtraceObjectGroup);
    scriptDebugServer().stepIntoStatement();
    if (m_listener)
        m_listener->stepInto();
}

void InspectorDebuggerAgent::stepOut(ErrorString* errorString, const String* callFrameId)
{
    if (!assertPaused(errorString))
        return;
    ScriptValue frame = resolveCallFrame(errorString, callFrameId);
    if (!errorString->isEmpty())
        return;
    m_injectedScriptManager->releaseObjectGroup(InspectorDebuggerAgent::backtraceObjectGroup);
    scriptDebugServer().stepOutOfFunction(frame);
}

void InspectorDebuggerAgent::setPauseOnExceptions(ErrorString* errorString, const String& stringPauseState)
{
    ScriptDebugServer::PauseOnExceptionsState pauseState;
    if (stringPauseState == "none")
        pauseState = ScriptDebugServer::DontPauseOnExceptions;
    else if (stringPauseState == "all")
        pauseState = ScriptDebugServer::PauseOnAllExceptions;
    else if (stringPauseState == "uncaught")
        pauseState = ScriptDebugServer::PauseOnUncaughtExceptions;
    else {
        *errorString = "Unknown pause on exceptions mode: " + stringPauseState;
        return;
    }
    setPauseOnExceptionsImpl(errorString, pauseState);
}

void InspectorDebuggerAgent::setPauseOnExceptionsImpl(ErrorString* errorString, int pauseState)
{
    scriptDebugServer().setPauseOnExceptionsState(static_cast<ScriptDebugServer::PauseOnExceptionsState>(pauseState));
    if (scriptDebugServer().pauseOnExceptionsState() != pauseState)
        *errorString = "Internal error. Could not change pause on exceptions state";
    else
        m_state->setLong(DebuggerAgentState::pauseOnExceptionsState, pauseState);
}

void InspectorDebuggerAgent::evaluateOnCallFrame(ErrorString* errorString, const String& callFrameId, const String& expression, const String* const objectGroup, const bool* const includeCommandLineAPI, const bool* const doNotPauseOnExceptionsAndMuteConsole, const bool* const returnByValue, const bool* generatePreview, RefPtr<RemoteObject>& result, TypeBuilder::OptOutput<bool>* wasThrown)
{
    if (!isPaused() || m_currentCallStack.hasNoValue()) {
        *errorString = "Attempt to access callframe when debugger is not on pause";
        return;
    }
    InjectedScript injectedScript = m_injectedScriptManager->injectedScriptForObjectId(callFrameId);
    if (injectedScript.hasNoValue()) {
        *errorString = "Inspected frame has gone";
        return;
    }

    ScriptDebugServer::PauseOnExceptionsState previousPauseOnExceptionsState = scriptDebugServer().pauseOnExceptionsState();
    if (doNotPauseOnExceptionsAndMuteConsole ? *doNotPauseOnExceptionsAndMuteConsole : false) {
        if (previousPauseOnExceptionsState != ScriptDebugServer::DontPauseOnExceptions)
            scriptDebugServer().setPauseOnExceptionsState(ScriptDebugServer::DontPauseOnExceptions);
        muteConsole();
    }

    Vector<ScriptValue> asyncCallStacks;
    const AsyncCallStackTracker::AsyncCallChain* asyncChain = m_asyncCallStackTracker.isEnabled() ? m_asyncCallStackTracker.currentAsyncCallChain() : 0;
    if (asyncChain) {
        const AsyncCallStackTracker::AsyncCallStackVector& callStacks = asyncChain->callStacks();
        asyncCallStacks.resize(callStacks.size());
        AsyncCallStackTracker::AsyncCallStackVector::const_iterator it = callStacks.begin();
        for (size_t i = 0; it != callStacks.end(); ++it, ++i)
            asyncCallStacks[i] = (*it)->callFrames();
    }

    injectedScript.evaluateOnCallFrame(errorString, m_currentCallStack, asyncCallStacks, callFrameId, expression, objectGroup ? *objectGroup : "", includeCommandLineAPI ? *includeCommandLineAPI : false, returnByValue ? *returnByValue : false, generatePreview ? *generatePreview : false, &result, wasThrown);

    if (doNotPauseOnExceptionsAndMuteConsole ? *doNotPauseOnExceptionsAndMuteConsole : false) {
        unmuteConsole();
        if (scriptDebugServer().pauseOnExceptionsState() != previousPauseOnExceptionsState)
            scriptDebugServer().setPauseOnExceptionsState(previousPauseOnExceptionsState);
    }
}

void InspectorDebuggerAgent::compileScript(ErrorString* errorString, const String& expression, const String& sourceURL, TypeBuilder::OptOutput<ScriptId>* scriptId, TypeBuilder::OptOutput<String>* syntaxErrorMessage)
{
    InjectedScript injectedScript = injectedScriptForEval(errorString, 0);
    if (injectedScript.hasNoValue()) {
        *errorString = "Inspected frame has gone";
        return;
    }

    String scriptIdValue;
    String exceptionMessage;
    scriptDebugServer().compileScript(injectedScript.scriptState(), expression, sourceURL, &scriptIdValue, &exceptionMessage);
    if (!scriptIdValue && !exceptionMessage) {
        *errorString = "Script compilation failed";
        return;
    }
    *syntaxErrorMessage = exceptionMessage;
    *scriptId = scriptIdValue;
}

void InspectorDebuggerAgent::runScript(ErrorString* errorString, const ScriptId& scriptId, const int* executionContextId, const String* const objectGroup, const bool* const doNotPauseOnExceptionsAndMuteConsole, RefPtr<RemoteObject>& result, TypeBuilder::OptOutput<bool>* wasThrown)
{
    InjectedScript injectedScript = injectedScriptForEval(errorString, executionContextId);
    if (injectedScript.hasNoValue()) {
        *errorString = "Inspected frame has gone";
        return;
    }

    ScriptDebugServer::PauseOnExceptionsState previousPauseOnExceptionsState = scriptDebugServer().pauseOnExceptionsState();
    if (doNotPauseOnExceptionsAndMuteConsole && *doNotPauseOnExceptionsAndMuteConsole) {
        if (previousPauseOnExceptionsState != ScriptDebugServer::DontPauseOnExceptions)
            scriptDebugServer().setPauseOnExceptionsState(ScriptDebugServer::DontPauseOnExceptions);
        muteConsole();
    }

    ScriptValue value;
    bool wasThrownValue;
    String exceptionMessage;
    scriptDebugServer().runScript(injectedScript.scriptState(), scriptId, &value, &wasThrownValue, &exceptionMessage);
    *wasThrown = wasThrownValue;
    if (value.hasNoValue()) {
        *errorString = "Script execution failed";
        return;
    }
    result = injectedScript.wrapObject(value, objectGroup ? *objectGroup : "");
    if (wasThrownValue)
        result->setDescription(exceptionMessage);

    if (doNotPauseOnExceptionsAndMuteConsole && *doNotPauseOnExceptionsAndMuteConsole) {
        unmuteConsole();
        if (scriptDebugServer().pauseOnExceptionsState() != previousPauseOnExceptionsState)
            scriptDebugServer().setPauseOnExceptionsState(previousPauseOnExceptionsState);
    }
}

void InspectorDebuggerAgent::setOverlayMessage(ErrorString*, const String*)
{
}

void InspectorDebuggerAgent::setVariableValue(ErrorString* errorString, int scopeNumber, const String& variableName, const RefPtr<JSONObject>& newValue, const String* callFrameId, const String* functionObjectId)
{
    InjectedScript injectedScript;
    if (callFrameId) {
        if (!isPaused() || m_currentCallStack.hasNoValue()) {
            *errorString = "Attempt to access callframe when debugger is not on pause";
            return;
        }
        injectedScript = m_injectedScriptManager->injectedScriptForObjectId(*callFrameId);
        if (injectedScript.hasNoValue()) {
            *errorString = "Inspected frame has gone";
            return;
        }
    } else if (functionObjectId) {
        injectedScript = m_injectedScriptManager->injectedScriptForObjectId(*functionObjectId);
        if (injectedScript.hasNoValue()) {
            *errorString = "Function object id cannot be resolved";
            return;
        }
    } else {
        *errorString = "Either call frame or function object must be specified";
        return;
    }
    String newValueString = newValue->toJSONString();

    injectedScript.setVariableValue(errorString, m_currentCallStack, callFrameId, functionObjectId, scopeNumber, variableName, newValueString);
}

void InspectorDebuggerAgent::skipStackFrames(ErrorString* errorString, const String* pattern)
{
    OwnPtr<ScriptRegexp> compiled;
    String patternValue = pattern ? *pattern : "";
    if (!patternValue.isEmpty()) {
        compiled = compileSkipCallFramePattern(patternValue);
        if (!compiled) {
            *errorString = "Invalid regular expression";
            return;
        }
    }
    m_state->setString(DebuggerAgentState::skipStackPattern, patternValue);
    m_cachedSkipStackRegExp = compiled.release();
}

void InspectorDebuggerAgent::setAsyncCallStackDepth(ErrorString*, int depth)
{
    m_state->setLong(DebuggerAgentState::asyncCallStackDepth, depth);
    m_asyncCallStackTracker.setAsyncCallStackDepth(depth);
}

void InspectorDebuggerAgent::scriptExecutionBlockedByCSP(const String& directiveText)
{
    if (scriptDebugServer().pauseOnExceptionsState() != ScriptDebugServer::DontPauseOnExceptions) {
        RefPtr<JSONObject> directive = JSONObject::create();
        directive->setString("directiveText", directiveText);
        breakProgram(InspectorFrontend::Debugger::Reason::CSPViolation, directive.release());
    }
}

PassRefPtr<Array<CallFrame> > InspectorDebuggerAgent::currentCallFrames()
{
    if (!m_pausedScriptState || m_currentCallStack.hasNoValue())
        return Array<CallFrame>::create();
    InjectedScript injectedScript = m_injectedScriptManager->injectedScriptFor(m_pausedScriptState);
    if (injectedScript.hasNoValue()) {
        ASSERT_NOT_REACHED();
        return Array<CallFrame>::create();
    }
    return injectedScript.wrapCallFrames(m_currentCallStack, 0);
}

PassRefPtr<StackTrace> InspectorDebuggerAgent::currentAsyncStackTrace()
{
    if (!m_pausedScriptState || !m_asyncCallStackTracker.isEnabled())
        return nullptr;
    InjectedScript injectedScript = m_injectedScriptManager->injectedScriptFor(m_pausedScriptState);
    if (injectedScript.hasNoValue()) {
        ASSERT_NOT_REACHED();
        return nullptr;
    }
    const AsyncCallStackTracker::AsyncCallChain* chain = m_asyncCallStackTracker.currentAsyncCallChain();
    if (!chain)
        return nullptr;
    const AsyncCallStackTracker::AsyncCallStackVector& callStacks = chain->callStacks();
    if (callStacks.isEmpty())
        return nullptr;
    RefPtr<StackTrace> result;
    int asyncOrdinal = callStacks.size();
    for (AsyncCallStackTracker::AsyncCallStackVector::const_reverse_iterator it = callStacks.rbegin(); it != callStacks.rend(); ++it) {
        RefPtr<StackTrace> next = StackTrace::create()
            .setCallFrames(injectedScript.wrapCallFrames((*it)->callFrames(), asyncOrdinal--))
            .release();
        next->setDescription((*it)->description());
        if (result)
            next->setAsyncStackTrace(result.release());
        result.swap(next);
    }
    return result.release();
}

String InspectorDebuggerAgent::sourceMapURLForScript(const Script& script)
{
    bool deprecated;
    String sourceMapURL = ContentSearchUtils::findSourceMapURL(script.source, ContentSearchUtils::JavaScriptMagicComment, &deprecated);
    if (!sourceMapURL.isEmpty()) {
        // FIXME: add deprecated console message here.
        return sourceMapURL;
    }

    if (script.url.isEmpty())
        return String();

    InspectorPageAgent* pageAgent = m_instrumentingAgents->inspectorPageAgent();
    if (!pageAgent)
        return String();
    return pageAgent->resourceSourceMapURL(script.url);
}

// JavaScriptDebugListener functions

void InspectorDebuggerAgent::didParseSource(const String& scriptId, const Script& script)
{
    // Don't send script content to the front end until it's really needed.
    const bool* isContentScript = script.isContentScript ? &script.isContentScript : 0;
    String sourceMapURL = sourceMapURLForScript(script);
    String* sourceMapURLParam = sourceMapURL.isNull() ? 0 : &sourceMapURL;
    String sourceURL;
    if (!script.startLine && !script.startColumn) {
        bool deprecated;
        sourceURL = ContentSearchUtils::findSourceURL(script.source, ContentSearchUtils::JavaScriptMagicComment, &deprecated);
        // FIXME: add deprecated console message here.
    }
    bool hasSourceURL = !sourceURL.isEmpty();
    String scriptURL = hasSourceURL ? sourceURL : script.url;
    bool* hasSourceURLParam = hasSourceURL ? &hasSourceURL : 0;
    m_frontend->scriptParsed(scriptId, scriptURL, script.startLine, script.startColumn, script.endLine, script.endColumn, isContentScript, sourceMapURLParam, hasSourceURLParam);

    m_scripts.set(scriptId, script);

    if (scriptURL.isEmpty())
        return;

    RefPtr<JSONObject> breakpointsCookie = m_state->getObject(DebuggerAgentState::javaScriptBreakpoints);
    for (JSONObject::iterator it = breakpointsCookie->begin(); it != breakpointsCookie->end(); ++it) {
        RefPtr<JSONObject> breakpointObject = it->value->asObject();
        bool isAntibreakpoint;
        breakpointObject->getBoolean(DebuggerAgentState::isAnti, &isAntibreakpoint);
        if (isAntibreakpoint)
            continue;
        bool isRegex;
        breakpointObject->getBoolean(DebuggerAgentState::isRegex, &isRegex);
        String url;
        breakpointObject->getString(DebuggerAgentState::url, &url);
        if (!matches(scriptURL, url, isRegex))
            continue;
        ScriptBreakpoint breakpoint;
        breakpointObject->getNumber(DebuggerAgentState::lineNumber, &breakpoint.lineNumber);
        breakpointObject->getNumber(DebuggerAgentState::columnNumber, &breakpoint.columnNumber);
        breakpointObject->getString(DebuggerAgentState::condition, &breakpoint.condition);
        RefPtr<TypeBuilder::Debugger::Location> location = resolveBreakpoint(it->key, scriptId, breakpoint, UserBreakpointSource);
        if (location)
            m_frontend->breakpointResolved(it->key, location);
    }
}

void InspectorDebuggerAgent::failedToParseSource(const String& url, const String& data, int firstLine, int errorLine, const String& errorMessage)
{
    m_frontend->scriptFailedToParse(url, data, firstLine, errorLine, errorMessage);
}

void InspectorDebuggerAgent::didPause(ScriptState* scriptState, const ScriptValue& callFrames, const ScriptValue& exception, const Vector<String>& hitBreakpoints)
{
    ASSERT(scriptState && !m_pausedScriptState);
    m_pausedScriptState = scriptState;
    m_currentCallStack = callFrames;

    m_skipStepInCount = numberOfStepsBeforeStepOut;

    if (!exception.hasNoValue()) {
        InjectedScript injectedScript = m_injectedScriptManager->injectedScriptFor(scriptState);
        if (!injectedScript.hasNoValue()) {
            m_breakReason = InspectorFrontend::Debugger::Reason::Exception;
            m_breakAuxData = injectedScript.wrapObject(exception, InspectorDebuggerAgent::backtraceObjectGroup)->openAccessors();
            // m_breakAuxData might be null after this.
        }
    }

    RefPtr<Array<String> > hitBreakpointIds = Array<String>::create();

    for (Vector<String>::const_iterator i = hitBreakpoints.begin(); i != hitBreakpoints.end(); ++i) {
        DebugServerBreakpointToBreakpointIdAndSourceMap::iterator breakpointIterator = m_serverBreakpoints.find(*i);
        if (breakpointIterator != m_serverBreakpoints.end()) {
            const String& localId = breakpointIterator->value.first;
            hitBreakpointIds->addItem(localId);

            BreakpointSource source = breakpointIterator->value.second;
            if (m_breakReason == InspectorFrontend::Debugger::Reason::Other && source == DebugCommandBreakpointSource)
                m_breakReason = InspectorFrontend::Debugger::Reason::DebugCommand;
        }
    }

    m_frontend->paused(currentCallFrames(), m_breakReason, m_breakAuxData, hitBreakpointIds, currentAsyncStackTrace());
    m_javaScriptPauseScheduled = false;

    if (!m_continueToLocationBreakpointId.isEmpty()) {
        scriptDebugServer().removeBreakpoint(m_continueToLocationBreakpointId);
        m_continueToLocationBreakpointId = "";
    }
    if (m_listener)
        m_listener->didPause();
}

void InspectorDebuggerAgent::didContinue()
{
    m_pausedScriptState = 0;
    m_currentCallStack = ScriptValue();
    clearBreakDetails();
    m_frontend->resumed();
}

bool InspectorDebuggerAgent::canBreakProgram()
{
    return scriptDebugServer().canBreakProgram();
}

void InspectorDebuggerAgent::breakProgram(InspectorFrontend::Debugger::Reason::Enum breakReason, PassRefPtr<JSONObject> data)
{
    if (m_skipAllPauses)
        return;
    m_breakReason = breakReason;
    m_breakAuxData = data;
    scriptDebugServer().breakProgram();
}

void InspectorDebuggerAgent::clear()
{
    m_pausedScriptState = 0;
    m_currentCallStack = ScriptValue();
    m_scripts.clear();
    m_breakpointIdToDebugServerBreakpointIds.clear();
    m_asyncCallStackTracker.clear();
    m_promiseTracker.clear();
    m_continueToLocationBreakpointId = String();
    clearBreakDetails();
    m_javaScriptPauseScheduled = false;
    ErrorString error;
    setOverlayMessage(&error, 0);
}

bool InspectorDebuggerAgent::assertPaused(ErrorString* errorString)
{
    if (!m_pausedScriptState) {
        *errorString = "Can only perform operation while paused.";
        return false;
    }
    return true;
}

void InspectorDebuggerAgent::clearBreakDetails()
{
    m_breakReason = InspectorFrontend::Debugger::Reason::Other;
    m_breakAuxData = nullptr;
}

void InspectorDebuggerAgent::setBreakpoint(const String& scriptId, int lineNumber, int columnNumber, BreakpointSource source, const String& condition)
{
    String breakpointId = generateBreakpointId(scriptId, lineNumber, columnNumber, source);
    ScriptBreakpoint breakpoint(lineNumber, columnNumber, condition);
    resolveBreakpoint(breakpointId, scriptId, breakpoint, source);
}

void InspectorDebuggerAgent::removeBreakpoint(const String& scriptId, int lineNumber, int columnNumber, BreakpointSource source)
{
    removeBreakpoint(generateBreakpointId(scriptId, lineNumber, columnNumber, source));
}

void InspectorDebuggerAgent::reset()
{
    m_scripts.clear();
    m_breakpointIdToDebugServerBreakpointIds.clear();
    m_asyncCallStackTracker.clear();
    m_promiseTracker.clear();
    if (m_frontend)
        m_frontend->globalObjectCleared();
}

} // namespace WebCore
/* [<][>][^][v][top][bottom][index][help] */
root/Source/core/inspector/InspectorDebuggerAgent.cpp

DEFINITIONS
