chrome-devtools-frontend
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Chrome DevTools UI
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JavaScript
/*
* Copyright (C) 2010 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.
*/
import * as Common from '../common/common.js';
import * as Host from '../host/host.js';
import * as Platform from '../platform/platform.js';
import * as ProtocolClient from '../protocol_client/protocol_client.js'; // eslint-disable-line no-unused-vars
import * as Root from '../root/root.js';
import {GetPropertiesResult, RemoteObject, ScopeRef} from './RemoteObject.js'; // eslint-disable-line no-unused-vars
import {Events as ResourceTreeModelEvents, ResourceTreeModel} from './ResourceTreeModel.js'; // eslint-disable-line no-unused-vars
import {EvaluationOptions, EvaluationResult, ExecutionContext, RuntimeModel} from './RuntimeModel.js'; // eslint-disable-line no-unused-vars
import {Script} from './Script.js';
import {Capability, SDKModel, Target, Type} from './SDKModel.js'; // eslint-disable-line no-unused-vars
import {SourceMapManager} from './SourceMapManager.js';
/**
* @param {!Array<!LocationRange>} locationRanges
* @return {!Array<!LocationRange>}
*/
export function sortAndMergeRanges(locationRanges) {
if (locationRanges.length === 0) {
return [];
}
locationRanges.sort(LocationRange.comparator);
let prev = locationRanges[0];
const merged = [];
for (let i = 1; i < locationRanges.length; ++i) {
const current = locationRanges[i];
if (prev.overlap(current)) {
const largerEnd = prev.end.compareTo(current.end) > 0 ? prev.end : current.end;
prev = new LocationRange(prev.scriptId, prev.start, largerEnd);
} else {
merged.push(prev);
prev = current;
}
}
merged.push(prev);
return merged;
}
/** @enum {symbol} */
export const StepMode = {
StepInto: Symbol('StepInto'),
StepOut: Symbol('StepOut'),
StepOver: Symbol('StepOver')
};
export class DebuggerModel extends SDKModel {
/**
* @param {!Target} target
*/
constructor(target) {
super(target);
target.registerDebuggerDispatcher(new DebuggerDispatcher(this));
this._agent = target.debuggerAgent();
this._runtimeModel = /** @type {!RuntimeModel} */ (target.model(RuntimeModel));
/** @type {!SourceMapManager<!Script>} */
this._sourceMapManager = new SourceMapManager(target);
/** @type {!Map<string, !Script>} */
this._sourceMapIdToScript = new Map();
/** @type {?DebuggerPausedDetails} */
this._debuggerPausedDetails = null;
/** @type {!Map<string, !Script>} */
this._scripts = new Map();
/** @type {!Map.<string, !Array.<!Script>>} */
this._scriptsBySourceURL = new Map();
/** @type {!Array.<!Script>} */
this._discardableScripts = [];
/** @type {(function(!DebuggerPausedDetails):boolean)|null} */
this._continueToLocationCallback = null;
/** @type {?CallFrame} */
this._selectedCallFrame = null;
/** @type {boolean} */
this._debuggerEnabled = false;
/** @type {?string} */
this._debuggerId = null;
/** @type {number} */
this._skipAllPausesTimeout = 0;
/** @type {(function(!DebuggerPausedDetails):boolean)|null} */
this._beforePausedCallback = null;
/** @type {?function(!StepMode, !CallFrame):!Promise<!Array<!{start: !Location, end: !Location}>>} */
this._computeAutoStepRangesCallback = null;
/** @type {?function(!Array<!CallFrame>):!Promise<!Array<!CallFrame>>} */
this._expandCallFramesCallback = null;
/** @type {?function(!CallFrame, !EvaluationOptions):!Promise<?EvaluationResult>} */
this._evaluateOnCallFrameCallback = null;
/** @type {boolean} */
this._ignoreDebuggerPausedEvents = false;
/** @type {!Common.ObjectWrapper.ObjectWrapper} */
this._breakpointResolvedEventTarget = new Common.ObjectWrapper.ObjectWrapper();
/** @type {boolean} */
this._autoStepOver = false;
this._isPausing = false;
Common.Settings.Settings.instance()
.moduleSetting('pauseOnExceptionEnabled')
.addChangeListener(this._pauseOnExceptionStateChanged, this);
Common.Settings.Settings.instance()
.moduleSetting('pauseOnCaughtException')
.addChangeListener(this._pauseOnExceptionStateChanged, this);
Common.Settings.Settings.instance()
.moduleSetting('disableAsyncStackTraces')
.addChangeListener(this._asyncStackTracesStateChanged, this);
Common.Settings.Settings.instance()
.moduleSetting('breakpointsActive')
.addChangeListener(this._breakpointsActiveChanged, this);
if (!target.suspended()) {
this._enableDebugger();
}
this._sourceMapManager.setEnabled(Common.Settings.Settings.instance().moduleSetting('jsSourceMapsEnabled').get());
Common.Settings.Settings.instance()
.moduleSetting('jsSourceMapsEnabled')
.addChangeListener(event => this._sourceMapManager.setEnabled(/** @type {boolean} */ (event.data)));
const resourceTreeModel =
/** @type {!ResourceTreeModel} */ (target.model(ResourceTreeModel));
if (resourceTreeModel) {
resourceTreeModel.addEventListener(ResourceTreeModelEvents.FrameNavigated, this._onFrameNavigated, this);
}
}
/**
* @param {!Protocol.Runtime.ExecutionContextId} executionContextId
* @param {string} sourceURL
* @param {string|undefined} sourceMapURL
* @return {?string}
*/
static _sourceMapId(executionContextId, sourceURL, sourceMapURL) {
if (!sourceMapURL) {
return null;
}
return executionContextId + ':' + sourceURL + ':' + sourceMapURL;
}
/**
* @return {!SourceMapManager<!Script>}
*/
sourceMapManager() {
return this._sourceMapManager;
}
/**
* @return {!RuntimeModel}
*/
runtimeModel() {
return this._runtimeModel;
}
/**
* @return {boolean}
*/
debuggerEnabled() {
return Boolean(this._debuggerEnabled);
}
/**
* @param {boolean} ignore
*/
ignoreDebuggerPausedEvents(ignore) {
this._ignoreDebuggerPausedEvents = ignore;
}
/**
* @return {!Promise<void>}
*/
async _enableDebugger() {
if (this._debuggerEnabled) {
return;
}
this._debuggerEnabled = true;
// Set a limit for the total size of collected script sources retained by debugger.
// 10MB for remote frontends, 100MB for others.
const isRemoteFrontend = Root.Runtime.Runtime.queryParam('remoteFrontend') || Root.Runtime.Runtime.queryParam('ws');
const maxScriptsCacheSize = isRemoteFrontend ? 10e6 : 100e6;
const enablePromise = this._agent.invoke_enable({maxScriptsCacheSize});
enablePromise.then(this._registerDebugger.bind(this));
this._pauseOnExceptionStateChanged();
this._asyncStackTracesStateChanged();
if (!Common.Settings.Settings.instance().moduleSetting('breakpointsActive').get()) {
this._breakpointsActiveChanged();
}
if (_scheduledPauseOnAsyncCall) {
this._pauseOnAsyncCall(_scheduledPauseOnAsyncCall);
}
this.dispatchEventToListeners(Events.DebuggerWasEnabled, this);
await enablePromise;
}
async syncDebuggerId() {
const isRemoteFrontend = Root.Runtime.Runtime.queryParam('remoteFrontend') || Root.Runtime.Runtime.queryParam('ws');
const maxScriptsCacheSize = isRemoteFrontend ? 10e6 : 100e6;
const enablePromise = this._agent.invoke_enable({maxScriptsCacheSize});
enablePromise.then(this._registerDebugger.bind(this));
return enablePromise;
}
_onFrameNavigated() {
if (DebuggerModel._shouldResyncDebuggerId) {
return;
}
DebuggerModel._shouldResyncDebuggerId = true;
}
/**
* @param {!Protocol.Debugger.EnableResponse} response
*/
_registerDebugger(response) {
if (response.getError()) {
return;
}
const {debuggerId} = response;
_debuggerIdToModel.set(debuggerId, this);
this._debuggerId = debuggerId;
this.dispatchEventToListeners(Events.DebuggerIsReadyToPause, this);
}
/**
* @return {boolean}
*/
isReadyToPause() {
return Boolean(this._debuggerId);
}
/**
* @param {string} debuggerId
* @return {Promise<?DebuggerModel>}
*/
static async modelForDebuggerId(debuggerId) {
if (DebuggerModel._shouldResyncDebuggerId) {
await DebuggerModel.resyncDebuggerIdForModels();
DebuggerModel._shouldResyncDebuggerId = false;
}
return _debuggerIdToModel.get(debuggerId) || null;
}
static async resyncDebuggerIdForModels() {
const dbgModels = _debuggerIdToModel.values();
for (const dbgModel of dbgModels) {
if (dbgModel.debuggerEnabled()) {
await dbgModel.syncDebuggerId();
}
}
}
/**
* @return {!Promise<void>}
*/
async _disableDebugger() {
if (!this._debuggerEnabled) {
return;
}
this._debuggerEnabled = false;
await this._asyncStackTracesStateChanged();
await this._agent.invoke_disable();
this._isPausing = false;
this.globalObjectCleared();
this.dispatchEventToListeners(Events.DebuggerWasDisabled);
if (typeof this._debuggerId === 'string') {
_debuggerIdToModel.delete(this._debuggerId);
}
}
/**
* @param {boolean} skip
*/
_skipAllPauses(skip) {
if (this._skipAllPausesTimeout) {
clearTimeout(this._skipAllPausesTimeout);
this._skipAllPausesTimeout = 0;
}
this._agent.invoke_setSkipAllPauses({skip});
}
/**
* @param {number} timeout
*/
skipAllPausesUntilReloadOrTimeout(timeout) {
if (this._skipAllPausesTimeout) {
clearTimeout(this._skipAllPausesTimeout);
}
this._agent.invoke_setSkipAllPauses({skip: true});
// If reload happens before the timeout, the flag will be already unset and the timeout callback won't change anything.
this._skipAllPausesTimeout = window.setTimeout(this._skipAllPauses.bind(this, false), timeout);
}
_pauseOnExceptionStateChanged() {
/** @type {!Protocol.Debugger.SetPauseOnExceptionsRequestState} */
let state;
if (!Common.Settings.Settings.instance().moduleSetting('pauseOnExceptionEnabled').get()) {
state = Protocol.Debugger.SetPauseOnExceptionsRequestState.None;
} else if (Common.Settings.Settings.instance().moduleSetting('pauseOnCaughtException').get()) {
state = Protocol.Debugger.SetPauseOnExceptionsRequestState.All;
} else {
state = Protocol.Debugger.SetPauseOnExceptionsRequestState.Uncaught;
}
this._agent.invoke_setPauseOnExceptions({state});
}
_asyncStackTracesStateChanged() {
const maxAsyncStackChainDepth = 32;
const enabled =
!Common.Settings.Settings.instance().moduleSetting('disableAsyncStackTraces').get() && this._debuggerEnabled;
const maxDepth = enabled ? maxAsyncStackChainDepth : 0;
return this._agent.invoke_setAsyncCallStackDepth({maxDepth});
}
_breakpointsActiveChanged() {
this._agent.invoke_setBreakpointsActive(
{active: Common.Settings.Settings.instance().moduleSetting('breakpointsActive').get()});
}
/**
* @param {?function(!StepMode, !CallFrame):!Promise<!Array<!{start: !Location, end: !Location}>>} callback
*/
setComputeAutoStepRangesCallback(callback) {
this._computeAutoStepRangesCallback = callback;
}
/**
* @param {!StepMode} mode
* @return {!Promise<!Array<!Protocol.Debugger.LocationRange>>}
*/
async _computeAutoStepSkipList(mode) {
/** @type {!Array<!{start: !Location, end: !Location}>} */
let ranges = [];
if (this._computeAutoStepRangesCallback && this._debuggerPausedDetails) {
const [callFrame] = this._debuggerPausedDetails.callFrames;
ranges = await this._computeAutoStepRangesCallback.call(null, mode, callFrame);
}
const skipList = ranges.map(
location => new LocationRange(
location.start.scriptId, new ScriptPosition(location.start.lineNumber, location.start.columnNumber),
new ScriptPosition(location.end.lineNumber, location.end.columnNumber)));
return sortAndMergeRanges(skipList).map(x => x.payload());
}
async stepInto() {
const skipList = await this._computeAutoStepSkipList(StepMode.StepInto);
this._agent.invoke_stepInto({breakOnAsyncCall: false, skipList});
}
async stepOver() {
// Mark that in case of auto-stepping, we should be doing
// step-over instead of step-in.
this._autoStepOver = true;
const skipList = await this._computeAutoStepSkipList(StepMode.StepOver);
this._agent.invoke_stepOver({skipList});
}
async stepOut() {
const skipList = await this._computeAutoStepSkipList(StepMode.StepOut);
if (skipList.length !== 0) {
this._agent.invoke_stepOver({skipList});
} else {
this._agent.invoke_stepOut();
}
}
scheduleStepIntoAsync() {
this._computeAutoStepSkipList(StepMode.StepInto).then(skipList => {
this._agent.invoke_stepInto({breakOnAsyncCall: true, skipList});
});
}
resume() {
this._agent.invoke_resume({terminateOnResume: false});
this._isPausing = false;
}
pause() {
this._isPausing = true;
this._skipAllPauses(false);
this._agent.invoke_pause();
}
/**
* @param {!Protocol.Runtime.StackTraceId} parentStackTraceId
* @return {!Promise<!Object>}
*/
_pauseOnAsyncCall(parentStackTraceId) {
return this._agent.invoke_pauseOnAsyncCall({parentStackTraceId: parentStackTraceId});
}
/**
* @param {string} url
* @param {number} lineNumber
* @param {number=} columnNumber
* @param {string=} condition
* @return {!Promise<!SetBreakpointResult>}
*/
async setBreakpointByURL(url, lineNumber, columnNumber, condition) {
// Convert file url to node-js path.
let urlRegex;
if (this.target().type() === Type.Node) {
const platformPath = Common.ParsedURL.ParsedURL.urlToPlatformPath(url, Host.Platform.isWin());
urlRegex =
`${Platform.StringUtilities.escapeForRegExp(platformPath)}|${Platform.StringUtilities.escapeForRegExp(url)}`;
}
// Adjust column if needed.
let minColumnNumber = 0;
const scripts = this._scriptsBySourceURL.get(url) || [];
for (let i = 0, l = scripts.length; i < l; ++i) {
const script = scripts[i];
if (lineNumber === script.lineOffset) {
minColumnNumber = minColumnNumber ? Math.min(minColumnNumber, script.columnOffset) : script.columnOffset;
}
}
columnNumber = Math.max(columnNumber || 0, minColumnNumber);
const response = await this._agent.invoke_setBreakpointByUrl({
lineNumber: lineNumber,
url: urlRegex ? undefined : url,
urlRegex: urlRegex,
columnNumber: columnNumber,
condition: condition
});
if (response.getError()) {
return {locations: [], breakpointId: null};
}
/** @type {!Array<!Location>} */
let locations = [];
if (response.locations) {
locations = response.locations.map(payload => Location.fromPayload(this, payload));
}
return {locations, breakpointId: response.breakpointId};
}
/**
* @param {string} scriptId
* @param {string} scriptHash
* @param {number} lineNumber
* @param {number=} columnNumber
* @param {string=} condition
* @return {!Promise<!SetBreakpointResult>}
*/
async setBreakpointInAnonymousScript(scriptId, scriptHash, lineNumber, columnNumber, condition) {
const response = await this._agent.invoke_setBreakpointByUrl(
{lineNumber: lineNumber, scriptHash: scriptHash, columnNumber: columnNumber, condition: condition});
const error = response.getError();
if (error) {
// Old V8 backend doesn't support scriptHash argument.
if (error !== 'Either url or urlRegex must be specified.') {
return {locations: [], breakpointId: null};
}
return this._setBreakpointBySourceId(scriptId, lineNumber, columnNumber, condition);
}
/** @type {!Array<!Location>} */
let locations = [];
if (response.locations) {
locations = response.locations.map(payload => Location.fromPayload(this, payload));
}
return {locations, breakpointId: response.breakpointId};
}
/**
* @param {string} scriptId
* @param {number} lineNumber
* @param {number=} columnNumber
* @param {string=} condition
* @return {!Promise<!SetBreakpointResult>}
*/
async _setBreakpointBySourceId(scriptId, lineNumber, columnNumber, condition) {
// This method is required for backward compatibility with V8 before 6.3.275.
const response = await this._agent.invoke_setBreakpoint(
{location: {scriptId: scriptId, lineNumber: lineNumber, columnNumber: columnNumber}, condition: condition});
if (response.getError()) {
return {breakpointId: null, locations: []};
}
/** @type {!Array<!Location>} */
let actualLocation = [];
if (response.actualLocation) {
actualLocation = [Location.fromPayload(this, response.actualLocation)];
}
return {locations: actualLocation, breakpointId: response.breakpointId};
}
/**
* @param {!Protocol.Debugger.BreakpointId} breakpointId
* @return {!Promise<void>}
*/
async removeBreakpoint(breakpointId) {
const response = await this._agent.invoke_removeBreakpoint({breakpointId});
if (response.getError()) {
console.error('Failed to remove breakpoint: ' + response.getError());
}
}
/**
* @param {!Location} startLocation
* @param {?Location} endLocation
* @param {boolean} restrictToFunction
* @return {!Promise<!Array<!BreakLocation>>}
*/
async getPossibleBreakpoints(startLocation, endLocation, restrictToFunction) {
const response = await this._agent.invoke_getPossibleBreakpoints({
start: startLocation.payload(),
end: endLocation ? endLocation.payload() : undefined,
restrictToFunction: restrictToFunction
});
if (response.getError() || !response.locations) {
return [];
}
return response.locations.map(location => BreakLocation.fromPayload(this, location));
}
/**
* @param {!Protocol.Runtime.StackTraceId} stackId
* @return {!Promise<?Protocol.Runtime.StackTrace>}
*/
async fetchAsyncStackTrace(stackId) {
const response = await this._agent.invoke_getStackTrace({stackTraceId: stackId});
return response.getError() ? null : response.stackTrace;
}
/**
* @param {!Protocol.Debugger.BreakpointId} breakpointId
* @param {!Protocol.Debugger.Location} location
*/
_breakpointResolved(breakpointId, location) {
this._breakpointResolvedEventTarget.dispatchEventToListeners(breakpointId, Location.fromPayload(this, location));
}
globalObjectCleared() {
this._setDebuggerPausedDetails(null);
this._reset();
// TODO(dgozman): move clients to ExecutionContextDestroyed/ScriptCollected events.
this.dispatchEventToListeners(Events.GlobalObjectCleared, this);
}
_reset() {
for (const scriptWithSourceMap of this._sourceMapIdToScript.values()) {
this._sourceMapManager.detachSourceMap(scriptWithSourceMap);
}
this._sourceMapIdToScript.clear();
this._scripts.clear();
this._scriptsBySourceURL.clear();
this._discardableScripts = [];
this._autoStepOver = false;
}
/**
* @return {!Array<!Script>}
*/
scripts() {
return Array.from(this._scripts.values());
}
/**
* @param {!Protocol.Runtime.ScriptId} scriptId
* @return {?Script}
*/
scriptForId(scriptId) {
return this._scripts.get(scriptId) || null;
}
/**
* @param {?string} sourceURL
* @return {!Array.<!Script>}
*/
scriptsForSourceURL(sourceURL) {
if (!sourceURL) {
return [];
}
return this._scriptsBySourceURL.get(sourceURL) || [];
}
/**
* @param {!ExecutionContext} executionContext
* @return {!Array<!Script>}
*/
scriptsForExecutionContext(executionContext) {
const result = [];
for (const script of this._scripts.values()) {
if (script.executionContextId === executionContext.id) {
result.push(script);
}
}
return result;
}
/**
* @param {!Protocol.Runtime.ScriptId} scriptId
* @param {string} newSource
* @param {function(?ProtocolClient.InspectorBackend.ProtocolError, !Protocol.Runtime.ExceptionDetails=):void} callback
*/
setScriptSource(scriptId, newSource, callback) {
const script = this._scripts.get(scriptId);
if (script) {
script.editSource(newSource, this._didEditScriptSource.bind(this, scriptId, newSource, callback));
}
}
/**
* @param {!Protocol.Runtime.ScriptId} scriptId
* @param {string} newSource
* @param {function(?ProtocolClient.InspectorBackend.ProtocolError, !Protocol.Runtime.ExceptionDetails=):void} callback
* @param {?ProtocolClient.InspectorBackend.ProtocolError} error
* @param {!Protocol.Runtime.ExceptionDetails=} exceptionDetails
* @param {!Array.<!Protocol.Debugger.CallFrame>=} callFrames
* @param {!Protocol.Runtime.StackTrace=} asyncStackTrace
* @param {!Protocol.Runtime.StackTraceId=} asyncStackTraceId
* @param {boolean=} needsStepIn
*/
_didEditScriptSource(
scriptId, newSource, callback, error, exceptionDetails, callFrames, asyncStackTrace, asyncStackTraceId,
needsStepIn) {
callback(error, exceptionDetails);
if (needsStepIn) {
this.stepInto();
return;
}
if (!error && callFrames && callFrames.length && this._debuggerPausedDetails) {
this._pausedScript(
callFrames, this._debuggerPausedDetails.reason, this._debuggerPausedDetails.auxData,
this._debuggerPausedDetails.breakpointIds, asyncStackTrace, asyncStackTraceId);
}
}
/**
* @return {?Array.<!CallFrame>}
*/
get callFrames() {
return this._debuggerPausedDetails ? this._debuggerPausedDetails.callFrames : null;
}
/**
* @return {?DebuggerPausedDetails}
*/
debuggerPausedDetails() {
return this._debuggerPausedDetails;
}
/**
* @param {?DebuggerPausedDetails} debuggerPausedDetails
* @return {boolean}
*/
_setDebuggerPausedDetails(debuggerPausedDetails) {
if (debuggerPausedDetails) {
this._isPausing = false;
this._debuggerPausedDetails = debuggerPausedDetails;
if (this._beforePausedCallback) {
if (!this._beforePausedCallback.call(null, debuggerPausedDetails)) {
return false;
}
}
// If we resolved a location in auto-stepping callback, reset the
// step-over marker.
this._autoStepOver = false;
this.dispatchEventToListeners(Events.DebuggerPaused, this);
this.setSelectedCallFrame(debuggerPausedDetails.callFrames[0]);
} else {
this._isPausing = false;
this._debuggerPausedDetails = null;
this.setSelectedCallFrame(null);
}
return true;
}
/**
* @param {?function(!DebuggerPausedDetails):boolean} callback
*/
setBeforePausedCallback(callback) {
this._beforePausedCallback = callback;
}
/**
* @param {?function(!Array<!CallFrame>):!Promise<!Array<!CallFrame>>} callback
*/
setExpandCallFramesCallback(callback) {
this._expandCallFramesCallback = callback;
}
/**
* @param {?function(!CallFrame, !EvaluationOptions):!Promise<?EvaluationResult>} callback
*/
setEvaluateOnCallFrameCallback(callback) {
this._evaluateOnCallFrameCallback = callback;
}
/**
* @param {!Array<!Protocol.Debugger.CallFrame>} callFrames
* @param {!Protocol.Debugger.PausedEventReason} reason
* @param {!Object|undefined} auxData
* @param {!Array.<string>} breakpointIds
* @param {!Protocol.Runtime.StackTrace=} asyncStackTrace
* @param {!Protocol.Runtime.StackTraceId=} asyncStackTraceId
* @param {!Protocol.Runtime.StackTraceId=} asyncCallStackTraceId
*/
async _pausedScript(
callFrames, reason, auxData, breakpointIds, asyncStackTrace, asyncStackTraceId, asyncCallStackTraceId) {
if (this._ignoreDebuggerPausedEvents) {
return;
}
if (asyncCallStackTraceId) {
// Note: this is only to support old backends. Newer ones do not send asyncCallStackTraceId.
_scheduledPauseOnAsyncCall = asyncCallStackTraceId;
const promises = [];
for (const model of _debuggerIdToModel.values()) {
promises.push(model._pauseOnAsyncCall(asyncCallStackTraceId));
}
await Promise.all(promises);
this.resume();
return;
}
const pausedDetails =
new DebuggerPausedDetails(this, callFrames, reason, auxData, breakpointIds, asyncStackTrace, asyncStackTraceId);
if (this._expandCallFramesCallback) {
pausedDetails.callFrames = await this._expandCallFramesCallback.call(null, pausedDetails.callFrames);
}
if (this._continueToLocationCallback) {
const callback = this._continueToLocationCallback;
this._continueToLocationCallback = null;
if (callback(pausedDetails)) {
return;
}
}
if (!this._setDebuggerPausedDetails(pausedDetails)) {
if (this._autoStepOver) {
this.stepOver();
} else {
this.stepInto();
}
} else {
Common.EventTarget.fireEvent('DevTools.DebuggerPaused');
}
_scheduledPauseOnAsyncCall = null;
}
_resumedScript() {
this._setDebuggerPausedDetails(null);
this.dispatchEventToListeners(Events.DebuggerResumed, this);
}
/**
* @param {!Protocol.Runtime.ScriptId} scriptId
* @param {string} sourceURL
* @param {number} startLine
* @param {number} startColumn
* @param {number} endLine
* @param {number} endColumn
* @param {!Protocol.Runtime.ExecutionContextId} executionContextId
* @param {string} hash
* @param {*|undefined} executionContextAuxData
* @param {boolean} isLiveEdit
* @param {string|undefined} sourceMapURL
* @param {boolean} hasSourceURLComment
* @param {boolean} hasSyntaxError
* @param {number} length
* @param {?Protocol.Runtime.StackTrace} originStackTrace
* @param {?number} codeOffset
* @param {?string} scriptLanguage
* @param {?Protocol.Debugger.DebugSymbols} debugSymbols
* @param {?string} embedderName
* @return {!Script}
*/
_parsedScriptSource(
scriptId, sourceURL, startLine, startColumn, endLine, endColumn, executionContextId, hash,
executionContextAuxData, isLiveEdit, sourceMapURL, hasSourceURLComment, hasSyntaxError, length, originStackTrace,
codeOffset, scriptLanguage, debugSymbols, embedderName) {
const knownScript = this._scripts.get(scriptId);
if (knownScript) {
return knownScript;
}
let isContentScript = false;
if (executionContextAuxData && ('isDefault' in executionContextAuxData)) {
isContentScript = !executionContextAuxData['isDefault'];
}
const script = new Script(
this, scriptId, sourceURL, startLine, startColumn, endLine, endColumn, executionContextId, hash,
isContentScript, isLiveEdit, sourceMapURL, hasSourceURLComment, length, originStackTrace, codeOffset,
scriptLanguage, debugSymbols, embedderName);
this._registerScript(script);
this.dispatchEventToListeners(Events.ParsedScriptSource, script);
const sourceMapId = DebuggerModel._sourceMapId(script.executionContextId, script.sourceURL, script.sourceMapURL);
if (sourceMapId && !hasSyntaxError) {
// Consecutive script evaluations in the same execution context with the same sourceURL
// and sourceMappingURL should result in source map reloading.
const previousScript = this._sourceMapIdToScript.get(sourceMapId);
if (previousScript) {
this._sourceMapManager.detachSourceMap(previousScript);
}
this._sourceMapIdToScript.set(sourceMapId, script);
this._sourceMapManager.attachSourceMap(script, script.sourceURL, script.sourceMapURL);
}
const isDiscardable = hasSyntaxError && script.isAnonymousScript();
if (isDiscardable) {
this._discardableScripts.push(script);
this._collectDiscardedScripts();
}
return script;
}
/**
* @param {!Script} script
* @param {string} newSourceMapURL
*/
setSourceMapURL(script, newSourceMapURL) {
let sourceMapId = DebuggerModel._sourceMapId(script.executionContextId, script.sourceURL, script.sourceMapURL);
if (sourceMapId && this._sourceMapIdToScript.get(sourceMapId) === script) {
this._sourceMapIdToScript.delete(sourceMapId);
}
this._sourceMapManager.detachSourceMap(script);
script.sourceMapURL = newSourceMapURL;
sourceMapId = DebuggerModel._sourceMapId(script.executionContextId, script.sourceURL, script.sourceMapURL);
if (!sourceMapId) {
return;
}
this._sourceMapIdToScript.set(sourceMapId, script);
this._sourceMapManager.attachSourceMap(script, script.sourceURL, script.sourceMapURL);
}
/**
* @param {!ExecutionContext} executionContext
*/
executionContextDestroyed(executionContext) {
const sourceMapIds = Array.from(this._sourceMapIdToScript.keys());
for (const sourceMapId of sourceMapIds) {
const script = this._sourceMapIdToScript.get(sourceMapId);
if (script && script.executionContextId === executionContext.id) {
this._sourceMapIdToScript.delete(sourceMapId);
this._sourceMapManager.detachSourceMap(script);
}
}
}
/**
* @param {!Script} script
*/
_registerScript(script) {
this._scripts.set(script.scriptId, script);
if (script.isAnonymousScript()) {
return;
}
let scripts = this._scriptsBySourceURL.get(script.sourceURL);
if (!scripts) {
scripts = [];
this._scriptsBySourceURL.set(script.sourceURL, scripts);
}
scripts.push(script);
}
/**
* @param {!Script} script
*/
_unregisterScript(script) {
console.assert(script.isAnonymousScript());
this._scripts.delete(script.scriptId);
}
_collectDiscardedScripts() {
if (this._discardableScripts.length < 1000) {
return;
}
const scriptsToDiscard = this._discardableScripts.splice(0, 100);
for (const script of scriptsToDiscard) {
this._unregisterScript(script);
this.dispatchEventToListeners(Events.DiscardedAnonymousScriptSource, script);
}
}
/**
* @param {!Script} script
* @param {number} lineNumber
* @param {number} columnNumber
* @return {!Location}
*/
createRawLocation(script, lineNumber, columnNumber) {
return this.createRawLocationByScriptId(script.scriptId, lineNumber, columnNumber);
}
/**
* @param {string} sourceURL
* @param {number} lineNumber
* @param {number} columnNumber
* @return {?Location}
*/
createRawLocationByURL(sourceURL, lineNumber, columnNumber) {
let closestScript = null;
const scripts = this._scriptsBySourceURL.get(sourceURL) || [];
for (let i = 0, l = scripts.length; i < l; ++i) {
const script = scripts[i];
if (!closestScript) {
closestScript = script;
}
if (script.lineOffset > lineNumber || (script.lineOffset === lineNumber && script.columnOffset > columnNumber)) {
continue;
}
if (script.endLine < lineNumber || (script.endLine === lineNumber && script.endColumn <= columnNumber)) {
continue;
}
closestScript = script;
break;
}
return closestScript ? new Location(this, closestScript.scriptId, lineNumber, columnNumber) : null;
}
/**
* @param {!Protocol.Runtime.ScriptId} scriptId
* @param {number} lineNumber
* @param {number} columnNumber
* @return {!Location}
*/
createRawLocationByScriptId(scriptId, lineNumber, columnNumber) {
return new Location(this, scriptId, lineNumber, columnNumber);
}
/**
* @param {!Protocol.Runtime.StackTrace} stackTrace
* @return {!Array<!Location>}
*/
createRawLocationsByStackTrace(stackTrace) {
const frames = [];
/** @type {!Protocol.Runtime.StackTrace|undefined} */
let current = stackTrace;
while (current) {
for (const frame of current.callFrames) {
frames.push(frame);
}
current = current.parent;
}
const rawLocations = [];
for (const frame of frames) {
const rawLocation = this.createRawLocationByScriptId(frame.scriptId, frame.lineNumber, frame.columnNumber);
if (rawLocation) {
rawLocations.push(rawLocation);
}
}
return rawLocations;
}
/**
* @return {boolean}
*/
isPaused() {
return Boolean(this.debuggerPausedDetails());
}
/**
* @return {boolean}
*/
isPausing() {
return this._isPausing;
}
/**
* @param {?CallFrame} callFrame
*/
setSelectedCallFrame(callFrame) {
if (this._selectedCallFrame === callFrame) {
return;
}
this._selectedCallFrame = callFrame;
this.dispatchEventToListeners(Events.CallFrameSelected, this);
}
/**
* @return {?CallFrame}
*/
selectedCallFrame() {
return this._selectedCallFrame;
}
/**
* @param {!EvaluationOptions} options
* @return {!Promise<!EvaluationResult>}
*/
async evaluateOnSelectedCallFrame(options) {
const callFrame = this.selectedCallFrame();
if (!callFrame) {
throw new Error('No call frame selected');
}
return callFrame.evaluate(options);
}
/**
* @param {!RemoteObject} remoteObject
* @return {!Promise<?FunctionDetails>}
*/
functionDetailsPromise(remoteObject) {
return remoteObject.getAllProperties(false /* accessorPropertiesOnly */, false /* generatePreview */)
.then(buildDetails.bind(this));
/**
* @param {!GetPropertiesResult} response
* @return {?FunctionDetails}
* @this {!DebuggerModel}
*/
function buildDetails(response) {
if (!response) {
return null;
}
let location = null;
if (response.internalProperties) {
for (const prop of response.internalProperties) {
if (prop.name === '[[FunctionLocation]]') {
location = prop.value;
}
}
}
let functionName = null;
if (response.properties) {
for (const prop of response.properties) {
if (prop.name === 'name' && prop.value && prop.value.type === 'string') {
functionName = prop.value;
}
if (prop.name === 'displayName' && prop.value && prop.value.type === 'string') {
functionName = prop.value;
break;
}
}
}
let debuggerLocation = null;
if (location) {
debuggerLocation = this.createRawLocationByScriptId(
location.value.scriptId, location.value.lineNumber, location.value.columnNumber);
}
return {location: debuggerLocation, functionName: functionName ? /** @type {string} */ (functionName.value) : ''};
}
}
/**
* @param {number} scopeNumber
* @param {string} variableName
* @param {!Protocol.Runtime.CallArgument} newValue
* @param {string} callFrameId
* @return {!Promise<string|undefined>}
*/
async setVariableValue(scopeNumber, variableName, newValue, callFrameId) {
const response = await this._agent.invoke_setVariableValue({scopeNumber, variableName, newValue, callFrameId});
const error = response.getError();
if (error) {
console.error(error);
}
return error;
}
/**
* @param {!Protocol.Debugger.BreakpointId} breakpointId
* @param {function(!Common.EventTarget.EventTargetEvent):void} listener
* @param {!Object=} thisObject
*/
addBreakpointListener(breakpointId, listener, thisObject) {
this._breakpointResolvedEventTarget.addEventListener(breakpointId, listener, thisObject);
}
/**
* @param {!Protocol.Debugger.BreakpointId} breakpointId
* @param {function(!Common.EventTarget.EventTargetEvent):void} listener
* @param {!Object=} thisObject
*/
removeBreakpointListener(breakpointId, listener, thisObject) {
this._breakpointResolvedEventTarget.removeEventListener(breakpointId, listener, thisObject);
}
/**
* @param {!Array<string>} patterns
* @return {!Promise<boolean>}
*/
async setBlackboxPatterns(patterns) {
const response = await this._agent.invoke_setBlackboxPatterns({patterns});
const error = response.getError();
if (error) {
console.error(error);
}
return !error;
}
/**
* @override
*/
dispose() {
this._sourceMapManager.dispose();
if (this._debuggerId) {
_debuggerIdToModel.delete(this._debuggerId);
}
Common.Settings.Settings.instance()
.moduleSetting('pauseOnExceptionEnabled')
.removeChangeListener(this._pauseOnExceptionStateChanged, this);
Common.Settings.Settings.instance()
.moduleSetting('pauseOnCaughtException')
.removeChangeListener(this._pauseOnExceptionStateChanged, this);
Common.Settings.Settings.instance()
.moduleSetting('disableAsyncStackTraces')
.removeChangeListener(this._asyncStackTracesStateChanged, this);
}
/**
* @override
* @return {!Promise<void>}
*/
async suspendModel() {
await this._disableDebugger();
}
/**
* @override
* @return {!Promise<void>}
*/
async resumeModel() {
await this._enableDebugger();
}
}
DebuggerModel._shouldResyncDebuggerId = false;
/** @type {!Map<string, !DebuggerModel>} */
export const _debuggerIdToModel = new Map();
/** @type {?Protocol.Runtime.StackTraceId} */
export let _scheduledPauseOnAsyncCall = null;
/**
* Keep these in sync with WebCore::V8Debugger
*
* @enum {string}
*/
export const PauseOnExceptionsState = {
DontPauseOnExceptions: 'none',
PauseOnAllExceptions: 'all',
PauseOnUncaughtExceptions: 'uncaught'
};
/** @enum {symbol} */
export const Events = {
DebuggerWasEnabled: Symbol('DebuggerWasEnabled'),
DebuggerWasDisabled: Symbol('DebuggerWasDisabled'),
DebuggerPaused: Symbol('DebuggerPaused'),
DebuggerResumed: Symbol('DebuggerResumed'),
ParsedScriptSource: Symbol('ParsedScriptSource'),
FailedToParseScriptSource: Symbol('FailedToParseScriptSource'),
DiscardedAnonymousScriptSource: Symbol('DiscardedAnonymousScriptSource'),
GlobalObjectCleared: Symbol('GlobalObjectCleared'),
CallFrameSelected: Symbol('CallFrameSelected'),
ConsoleCommandEvaluatedInSelectedCallFrame: Symbol('ConsoleCommandEvaluatedInSelectedCallFrame'),
DebuggerIsReadyToPause: Symbol('DebuggerIsReadyToPause'),
};
/**
* @implements {ProtocolProxyApi.DebuggerDispatcher}
*/
class DebuggerDispatcher {
/**
* @param {!DebuggerModel} debuggerModel
*/
constructor(debuggerModel) {
this._debuggerModel = debuggerModel;
}
/**
* @override
* @param {!Protocol.Debugger.PausedEvent} event
*/
paused({callFrames, reason, data, hitBreakpoints, asyncStackTrace, asyncStackTraceId, asyncCallStackTraceId}) {
if (!this._debuggerModel.debuggerEnabled()) {
return;
}
this._debuggerModel._pausedScript(
callFrames, reason, data, hitBreakpoints || [], asyncStackTrace, asyncStackTraceId, asyncCallStackTraceId);
}
/**
* @override
*/
resumed() {
if (!this._debuggerModel.debuggerEnabled()) {
return;
}
this._debuggerModel._resumedScript();
}
/**
* @override
* @param {!Protocol.Debugger.ScriptParsedEvent} event
*/
scriptParsed({
scriptId,
url,
startLine,
startColumn,
endLine,
endColumn,
executionContextId,
hash,
executionContextAuxData,
isLiveEdit,
sourceMapURL,
hasSourceURL,
isModule,
length,
stackTrace,
codeOffset,
scriptLanguage,
debugSymbols,
embedderName
}) {
if (!this._debuggerModel.debuggerEnabled()) {
return;
}
this._debuggerModel._parsedScriptSource(
scriptId, url, startLine, startColumn, endLine, endColumn, executionContextId, hash, executionContextAuxData,
Boolean(isLiveEdit), sourceMapURL, Boolean(hasSourceURL), false, length || 0, stackTrace || null,
codeOffset || null, scriptLanguage || null, debugSymbols || null, embedderName || null);
}
/**
* @override
* @param {!Protocol.Debugger.ScriptFailedToParseEvent} event
*/
scriptFailedToParse({
scriptId,
url,
startLine,
startColumn,
endLine,
endColumn,
executionContextId,
hash,
executionContextAuxData,
sourceMapURL,
hasSourceURL,
isModule,
length,
stackTrace,
codeOffset,
scriptLanguage,
embedderName
}) {
if (!this._debuggerModel.debuggerEnabled()) {
return;
}
this._debuggerModel._parsedScriptSource(
scriptId, url, startLine, startColumn, endLine, endColumn, executionContextId, hash, executionContextAuxData,
false, sourceMapURL, Boolean(hasSourceURL), true, length || 0, stackTrace || null, codeOffset || null,
scriptLanguage || null, null, embedderName || null);
}
/**
* @override
* @param {!Protocol.Debugger.BreakpointResolvedEvent} event
*/
breakpointResolved({breakpointId, location}) {
if (!this._debuggerModel.debuggerEnabled()) {
return;
}
this._debuggerModel._breakpointResolved(breakpointId, location);
}
}
export class Location {
/**
* @param {!DebuggerModel} debuggerModel
* @param {string} scriptId
* @param {number} lineNumber
* @param {number=} columnNumber
* @param {number=} inlineFrameIndex
*/
constructor(debuggerModel, scriptId, lineNumber, columnNumber, inlineFrameIndex) {
this.debuggerModel = debuggerModel;
this.scriptId = scriptId;
this.lineNumber = lineNumber;
this.columnNumber = columnNumber || 0;
this.inlineFrameIndex = inlineFrameIndex || 0;
}
/**
* @param {!DebuggerModel} debuggerModel
* @param {!Protocol.Debugger.Location} payload
* @param {number=} inlineFrameIndex
* @return {!Location}
*/
static fromPayload(debuggerModel, payload, inlineFrameIndex) {
return new Location(debuggerModel, payload.scriptId, payload.lineNumber, payload.columnNumber, inlineFrameIndex);
}
/**
* @return {!Protocol.Debugger.Location}
*/
payload() {
return {scriptId: this.scriptId, lineNumber: this.lineNumber, columnNumber: this.columnNumber};
}
/**
* @return {?Script}
*/
script() {
return this.debuggerModel.scriptForId(this.scriptId);
}
/**
* @param {function():void=} pausedCallback
*/
continueToLocation(pausedCallback) {
if (pausedCallback) {
this.debuggerModel._continueToLocationCallback = this._paused.bind(this, pausedCallback);
}
this.debuggerModel._agent.invoke_continueToLocation({
location: this.payload(),
targetCallFrames: Protocol.Debugger.ContinueToLocationRequestTargetCallFrames.Current
});
}
/**
* @param {function():void|undefined} pausedCallback
* @param {!DebuggerPausedDetails} debuggerPausedDetails
* @return {boolean}
*/
_paused(pausedCallback, debuggerPausedDetails) {
const location = debuggerPausedDetails.callFrames[0].location();
if (location.scriptId === this.scriptId && location.lineNumber === this.lineNumber &&
location.columnNumber === this.columnNumber) {
pausedCallback();
return true;
}
return false;
}
/**
* @return {string}
*/
id() {
return this.debuggerModel.target().id() + ':' + this.scriptId + ':' + this.lineNumber + ':' + this.columnNumber;
}
}
export class ScriptPosition {
/**
* @param {number} lineNumber
* @param {number} columnNumber
*/
constructor(lineNumber, columnNumber) {
this.lineNumber = lineNumber;
this.columnNumber = columnNumber;
}
/**
* @return {!Protocol.Debugger.ScriptPosition}
*/
payload() {
return {lineNumber: this.lineNumber, columnNumber: this.columnNumber};
}
/**
* @param {!ScriptPosition} other
* @return {number}
*/
compareTo(other) {
if (this.lineNumber !== other.lineNumber) {
return this.lineNumber - other.lineNumber;
}
return this.columnNumber - other.columnNumber;
}
}
export class LocationRange {
/**
* @param {string} scriptId
* @param {!ScriptPosition} start
* @param {!ScriptPosition} end
*/
constructor(scriptId, start, end) {
this.scriptId = scriptId;
this.start = start;
this.end = end;
}
/**
* @return {!Protocol.Debugger.LocationRange}
*/
payload() {
return {scriptId: this.scriptId, start: this.start.payload(), end: this.end.payload()};
}
/**
* @param {!LocationRange} location1
* @param {!LocationRange} location2
* @return {number}
*/
static comparator(location1, location2) {
return location1.compareTo(location2);
}
/**
* @param {!LocationRange} other
* @return {number}
*/
compareTo(other) {
if (this.scriptId !== other.scriptId) {
return this.scriptId > other.scriptId ? 1 : -1;
}
const startCmp = this.start.compareTo(other.start);
if (startCmp) {
return startCmp;
}
return this.end.compareTo(other.end);
}
/**
* @param {!LocationRange} other
* @return boolean
*/
overlap(other) {
if (this.scriptId !== other.scriptId) {
return false;
}
const startCmp = this.start.compareTo(other.start);
if (startCmp < 0) {
return this.end.compareTo(other.start) >= 0;
}
if (startCmp > 0) {
return this.start.compareTo(other.end) <= 0;
}
return true;
}
}
export class BreakLocation extends Location {
/**
* @param {!DebuggerModel} debuggerModel
* @param {string} scriptId
* @param {number} lineNumber
* @param {number=} columnNumber
* @param {!Protocol.Debugger.BreakLocationType=} type
*/
constructor(debuggerModel, scriptId, lineNumber, columnNumber, type) {
super(debuggerModel, scriptId, lineNumber, columnNumber);
if (type) {
this.type = type;
}
}
/**
* @override
* @param {!DebuggerModel} debuggerModel
* @param {!Protocol.Debugger.BreakLocation} payload
* @return {!BreakLocation}
*/
static fromPayload(debuggerModel, payload) {
return new BreakLocation(debuggerModel, payload.scriptId, payload.lineNumber, payload.columnNumber, payload.type);
}
}
export class CallFrame {
/**
* @param {!DebuggerModel} debuggerModel
* @param {!Script} script
* @param {!Protocol.Debugger.CallFrame} payload
* @param {number=} inlineFrameIndex
* @param {string=} functionName
*/
constructor(debuggerModel, script, payload, inlineFrameIndex, functionName) {
this.debuggerModel = debuggerModel;
this._script = script;
this._payload = payload;
this._location = Location.fromPayload(debuggerModel, payload.location, inlineFrameIndex);
/** @type {!Array<!Scope>} */
this._scopeChain = [];
this._localScope = null;
this._inlineFrameIndex = inlineFrameIndex || 0;
this._functionName = functionName || payload.functionName;
for (let i = 0; i < payload.scopeChain.length; ++i) {
const scope = new Scope(this, i);
this._scopeChain.push(scope);
if (scope.type() === Protocol.Debugger.ScopeType.Local) {
this._localScope = scope;
}
}
if (payload.functionLocation) {
this._functionLocation = Location.fromPayload(debuggerModel, payload.functionLocation);
}
this._returnValue =
payload.returnValue ? this.debuggerModel._runtimeModel.createRemoteObject(payload.returnValue) : null;
}
/**
* @param {!DebuggerModel} debuggerModel
* @param {!Array.<!Protocol.Debugger.CallFrame>} callFrames
* @return {!Array.<!CallFrame>}
*/
static fromPayloadArray(debuggerModel, callFrames) {
const result = [];
for (let i = 0; i < callFrames.length; ++i) {
const callFrame = callFrames[i];
const script = debuggerModel.scriptForId(callFrame.location.scriptId);
if (script) {
result.push(new CallFrame(debuggerModel, script, callFrame));
}
}
return result;
}
/**
* @param {number=} inlineFrameIndex
* @param {string=} functionName
*/
createVirtualCallFrame(inlineFrameIndex, functionName) {
return new CallFrame(this.debuggerModel, this._script, this._payload, inlineFrameIndex, functionName);
}
/**
* @return {!Script}
*/
get script() {
return this._script;
}
/**
* @return {string}
*/
get id() {
return this._payload.callFrameId;
}
/**
* @return {number}
*/
get inlineFrameIndex() {
return this._inlineFrameIndex;
}
/**
* @return {!Array.<!Scope>}
*/
scopeChain() {
return this._scopeChain;
}
/**
* @return {?Scope}
*/
localScope() {
return this._localScope;
}
/**
* @return {?RemoteObject}
*/
thisObject() {
return this._payload.this ? this.debuggerModel._runtimeModel.createRemoteObject(this._payload.this) : null;
}
/**
* @return {?RemoteObject}
*/
returnValue() {
return this._returnValu