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Copy pathInjectedScriptSource.js
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1458 lines (1201 loc) · 48.8 KB
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/*
* Copyright (C) 2007, 2014-2015 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 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.
*/
//# sourceURL=__InjectedScript_InjectedScriptSource.js
(function (InjectedScriptHost, inspectedGlobalObject, injectedScriptId) {
// FIXME: <https://webkit.org/b/152294> Web Inspector: Parse InjectedScriptSource as a built-in to get guaranteed non-user-overridden built-ins
var Object = {}.constructor;
function toString(obj)
{
return String(obj);
}
function toStringDescription(obj)
{
if (obj === 0 && 1 / obj < 0)
return "-0";
return toString(obj);
}
function isUInt32(obj)
{
if (typeof obj === "number")
return obj >>> 0 === obj && (obj > 0 || 1 / obj > 0);
return "" + (obj >>> 0) === obj;
}
function isSymbol(obj)
{
return typeof obj === "symbol";
}
function isEmptyObject(object)
{
for (let key in object)
return false;
return true;
}
function isDefined(value)
{
return !!value || InjectedScriptHost.isHTMLAllCollection(value);
}
function isPrimitiveValue(value)
{
switch (typeof value) {
case "boolean":
case "number":
case "string":
return true;
case "undefined":
return !InjectedScriptHost.isHTMLAllCollection(value);
default:
return false;
}
}
// -------
let InjectedScript = class InjectedScript
{
constructor()
{
this._lastBoundObjectId = 1;
this._idToWrappedObject = {};
this._idToObjectGroupName = {};
this._objectGroups = {};
this._modules = {};
this._nextSavedResultIndex = 1;
this._savedResults = [];
}
// InjectedScript C++ API
evaluate(expression, objectGroup, injectCommandLineAPI, returnByValue, generatePreview, saveResult)
{
return this._evaluateAndWrap(InjectedScriptHost.evaluateWithScopeExtension, InjectedScriptHost, expression, objectGroup, false, injectCommandLineAPI, returnByValue, generatePreview, saveResult);
}
awaitPromise(promiseObjectId, returnByValue, generatePreview, saveResult, callback)
{
let parsedPromiseObjectId = this._parseObjectId(promiseObjectId);
let promiseObject = this._objectForId(parsedPromiseObjectId);
let promiseObjectGroupName = this._idToObjectGroupName[parsedPromiseObjectId.id];
if (!isDefined(promiseObject)) {
callback("Could not find object with given id");
return;
}
if (!(promiseObject instanceof Promise)) {
callback("Object with given id is not a Promise");
return;
}
let resolve = (value) => {
let returnObject = {
wasThrown: false,
result: RemoteObject.create(value, promiseObjectGroupName, returnByValue, generatePreview),
};
if (saveResult) {
this._savedResultIndex = 0;
this._saveResult(returnObject.result);
if (this._savedResultIndex)
returnObject.savedResultIndex = this._savedResultIndex;
}
callback(returnObject);
};
let reject = (reason) => {
callback(this._createThrownValue(reason, promiseObjectGroupName));
};
promiseObject.then(resolve, reject);
}
evaluateOnCallFrame(topCallFrame, callFrameId, expression, objectGroup, injectCommandLineAPI, returnByValue, generatePreview, saveResult)
{
let callFrame = this._callFrameForId(topCallFrame, callFrameId);
if (!callFrame)
return "Could not find call frame with given id";
return this._evaluateAndWrap(callFrame.evaluateWithScopeExtension, callFrame, expression, objectGroup, true, injectCommandLineAPI, returnByValue, generatePreview, saveResult);
}
callFunctionOn(objectId, expression, args, returnByValue, generatePreview)
{
let parsedObjectId = this._parseObjectId(objectId);
let object = this._objectForId(parsedObjectId);
let objectGroupName = this._idToObjectGroupName[parsedObjectId.id];
if (!isDefined(object))
return "Could not find object with given id";
let resolvedArgs = [];
if (args) {
let callArgs = InjectedScriptHost.evaluate(args);
for (let i = 0; i < callArgs.length; ++i) {
try {
resolvedArgs[i] = this._resolveCallArgument(callArgs[i]);
} catch (e) {
return String(e);
}
}
}
try {
let func = InjectedScriptHost.evaluate("(" + expression + ")");
if (typeof func !== "function")
return "Given expression does not evaluate to a function";
return {
wasThrown: false,
result: RemoteObject.create(func.apply(object, resolvedArgs), objectGroupName, returnByValue, generatePreview)
};
} catch (e) {
return this._createThrownValue(e, objectGroupName);
}
}
getFunctionDetails(objectId)
{
let parsedObjectId = this._parseObjectId(objectId);
let object = this._objectForId(parsedObjectId);
if (typeof object !== "function")
return "Cannot resolve function by id.";
return this.functionDetails(object);
}
functionDetails(func)
{
let details = InjectedScriptHost.functionDetails(func);
if (!details)
return "Cannot resolve function details.";
return details;
}
getPreview(objectId)
{
let parsedObjectId = this._parseObjectId(objectId);
let object = this._objectForId(parsedObjectId);
return RemoteObject.createObjectPreviewForValue(object, true);
}
getProperties(objectId, ownProperties, generatePreview)
{
let nativeGettersAsValues = false;
let collectionMode = ownProperties ? InjectedScript.CollectionMode.OwnProperties : InjectedScript.CollectionMode.AllProperties;
return this._getProperties(objectId, collectionMode, generatePreview, nativeGettersAsValues);
}
getDisplayableProperties(objectId, generatePreview)
{
let nativeGettersAsValues = true;
let collectionMode = InjectedScript.CollectionMode.OwnProperties | InjectedScript.CollectionMode.NativeGetterProperties;
return this._getProperties(objectId, collectionMode, generatePreview, nativeGettersAsValues);
}
getInternalProperties(objectId, generatePreview)
{
let parsedObjectId = this._parseObjectId(objectId);
let object = this._objectForId(parsedObjectId);
let objectGroupName = this._idToObjectGroupName[parsedObjectId.id];
if (!isDefined(object))
return false;
if (isSymbol(object))
return false;
let descriptors = this._internalPropertyDescriptors(object);
if (!descriptors)
return [];
for (let i = 0; i < descriptors.length; ++i) {
let descriptor = descriptors[i];
if ("value" in descriptor)
descriptor.value = RemoteObject.create(descriptor.value, objectGroupName, false, generatePreview);
}
return descriptors;
}
getCollectionEntries(objectId, objectGroupName, startIndex, numberToFetch)
{
let parsedObjectId = this._parseObjectId(objectId);
let object = this._objectForId(parsedObjectId);
objectGroupName = objectGroupName || this._idToObjectGroupName[parsedObjectId.id];
if (!isDefined(object))
return;
if (typeof object !== "object")
return;
let entries = this._entries(object, InjectedScriptHost.subtype(object), startIndex, numberToFetch);
return entries.map(function(entry) {
entry.value = RemoteObject.create(entry.value, objectGroupName, false, true);
if ("key" in entry)
entry.key = RemoteObject.create(entry.key, objectGroupName, false, true);
return entry;
});
}
saveResult(callArgumentJSON)
{
this._savedResultIndex = 0;
try {
let callArgument = InjectedScriptHost.evaluate("(" + callArgumentJSON + ")");
let value = this._resolveCallArgument(callArgument);
this._saveResult(value);
} catch (e) {}
return this._savedResultIndex;
}
wrapCallFrames(callFrame)
{
if (!callFrame)
return false;
let result = [];
let depth = 0;
do {
result.push(new InjectedScript.CallFrameProxy(depth++, callFrame));
callFrame = callFrame.caller;
} while (callFrame);
return result;
}
wrapObject(object, groupName, canAccessInspectedGlobalObject, generatePreview)
{
if (!canAccessInspectedGlobalObject)
return this._fallbackWrapper(object);
return RemoteObject.create(object, groupName, false, generatePreview);
}
wrapJSONString(jsonString, groupName, generatePreview)
{
try {
return this.wrapObject(JSON.parse(jsonString), groupName, true, generatePreview);
} catch {
return null;
}
}
wrapTable(canAccessInspectedGlobalObject, table, columns)
{
if (!canAccessInspectedGlobalObject)
return this._fallbackWrapper(table);
// FIXME: Currently columns are ignored. Instead, the frontend filters all
// properties based on the provided column names and in the provided order.
// We could filter here to avoid sending very large preview objects.
let columnNames = null;
if (typeof columns === "string")
columns = [columns];
if (InjectedScriptHost.subtype(columns) === "array") {
columnNames = [];
for (let i = 0; i < columns.length; ++i)
columnNames.push(toString(columns[i]));
}
return RemoteObject.create(table, "console", false, true, columnNames);
}
previewValue(value)
{
return RemoteObject.createObjectPreviewForValue(value, true);
}
setExceptionValue(value)
{
this._exceptionValue = value;
}
clearExceptionValue()
{
delete this._exceptionValue;
}
findObjectById(objectId)
{
let parsedObjectId = this._parseObjectId(objectId);
return this._objectForId(parsedObjectId);
}
inspectObject(object)
{
if (this._commandLineAPIImpl)
this._commandLineAPIImpl.inspect(object);
}
releaseObject(objectId)
{
let parsedObjectId = this._parseObjectId(objectId);
this._releaseObject(parsedObjectId.id);
}
releaseObjectGroup(objectGroupName)
{
if (objectGroupName === "console") {
delete this._lastResult;
this._nextSavedResultIndex = 1;
this._savedResults = [];
}
let group = this._objectGroups[objectGroupName];
if (!group)
return;
for (let i = 0; i < group.length; i++)
this._releaseObject(group[i]);
delete this._objectGroups[objectGroupName];
}
// InjectedScriptModule C++ API
module(name)
{
return this._modules[name];
}
injectModule(name, source, host)
{
delete this._modules[name];
let moduleFunction = InjectedScriptHost.evaluate("(" + source + ")");
if (typeof moduleFunction !== "function") {
if (inspectedGlobalObject.console)
inspectedGlobalObject.console.error("Web Inspector error: A function was expected for module %s evaluation", name);
return null;
}
let module = moduleFunction.call(inspectedGlobalObject, InjectedScriptHost, inspectedGlobalObject, injectedScriptId, this, RemoteObject, host);
this._modules[name] = module;
return module;
}
// InjectedScriptModule JavaScript API
isPrimitiveValue(value)
{
return isPrimitiveValue(value);
}
// Private
_parseObjectId(objectId)
{
return InjectedScriptHost.evaluate("(" + objectId + ")");
}
_objectForId(objectId)
{
return this._idToWrappedObject[objectId.id];
}
_bind(object, objectGroupName)
{
let id = this._lastBoundObjectId++;
let objectId = `{"injectedScriptId":${injectedScriptId},"id":${id}}`;
this._idToWrappedObject[id] = object;
if (objectGroupName) {
let group = this._objectGroups[objectGroupName];
if (!group) {
group = [];
this._objectGroups[objectGroupName] = group;
}
group.push(id);
this._idToObjectGroupName[id] = objectGroupName;
}
return objectId;
}
_releaseObject(id)
{
delete this._idToWrappedObject[id];
delete this._idToObjectGroupName[id];
}
_fallbackWrapper(object)
{
let result = {};
result.type = typeof object;
if (isPrimitiveValue(object))
result.value = object;
else
result.description = toString(object);
return result;
}
_resolveCallArgument(callArgumentJSON)
{
if ("value" in callArgumentJSON)
return callArgumentJSON.value;
let objectId = callArgumentJSON.objectId;
if (objectId) {
let parsedArgId = this._parseObjectId(objectId);
if (!parsedArgId || parsedArgId["injectedScriptId"] !== injectedScriptId)
throw "Arguments should belong to the same JavaScript world as the target object.";
let resolvedArg = this._objectForId(parsedArgId);
if (!isDefined(resolvedArg))
throw "Could not find object with given id";
return resolvedArg;
}
return undefined;
}
_createThrownValue(value, objectGroup)
{
let remoteObject = RemoteObject.create(value, objectGroup);
try {
remoteObject.description = toStringDescription(value);
} catch (e) {}
return {
wasThrown: true,
result: remoteObject
};
}
_evaluateAndWrap(evalFunction, object, expression, objectGroup, isEvalOnCallFrame, injectCommandLineAPI, returnByValue, generatePreview, saveResult)
{
try {
this._savedResultIndex = 0;
let returnObject = {
wasThrown: false,
result: RemoteObject.create(this._evaluateOn(evalFunction, object, objectGroup, expression, isEvalOnCallFrame, injectCommandLineAPI, saveResult), objectGroup, returnByValue, generatePreview)
};
if (saveResult && this._savedResultIndex)
returnObject.savedResultIndex = this._savedResultIndex;
return returnObject;
} catch (e) {
return this._createThrownValue(e, objectGroup);
}
}
_evaluateOn(evalFunction, object, objectGroup, expression, isEvalOnCallFrame, injectCommandLineAPI, saveResult)
{
let commandLineAPI = null;
if (injectCommandLineAPI) {
if (this.CommandLineAPI)
commandLineAPI = new this.CommandLineAPI(this._commandLineAPIImpl, isEvalOnCallFrame ? object : null);
else
commandLineAPI = new BasicCommandLineAPI(isEvalOnCallFrame ? object : null);
}
let result = evalFunction.call(object, expression, commandLineAPI);
if (saveResult)
this._saveResult(result);
return result;
}
_callFrameForId(topCallFrame, callFrameId)
{
let parsedCallFrameId = InjectedScriptHost.evaluate("(" + callFrameId + ")");
let ordinal = parsedCallFrameId["ordinal"];
let callFrame = topCallFrame;
while (--ordinal >= 0 && callFrame)
callFrame = callFrame.caller;
return callFrame;
}
_getProperties(objectId, collectionMode, generatePreview, nativeGettersAsValues)
{
let parsedObjectId = this._parseObjectId(objectId);
let object = this._objectForId(parsedObjectId);
let objectGroupName = this._idToObjectGroupName[parsedObjectId.id];
if (!isDefined(object))
return false;
if (isSymbol(object))
return false;
let descriptors = this._propertyDescriptors(object, collectionMode, nativeGettersAsValues);
for (let i = 0; i < descriptors.length; ++i) {
let descriptor = descriptors[i];
if ("get" in descriptor)
descriptor.get = RemoteObject.create(descriptor.get, objectGroupName);
if ("set" in descriptor)
descriptor.set = RemoteObject.create(descriptor.set, objectGroupName);
if ("value" in descriptor)
descriptor.value = RemoteObject.create(descriptor.value, objectGroupName, false, generatePreview);
if (!("configurable" in descriptor))
descriptor.configurable = false;
if (!("enumerable" in descriptor))
descriptor.enumerable = false;
if ("symbol" in descriptor)
descriptor.symbol = RemoteObject.create(descriptor.symbol, objectGroupName);
}
return descriptors;
}
_internalPropertyDescriptors(object, completeDescriptor)
{
let internalProperties = InjectedScriptHost.getInternalProperties(object);
if (!internalProperties)
return null;
let descriptors = [];
for (let i = 0; i < internalProperties.length; i++) {
let property = internalProperties[i];
let descriptor = {name: property.name, value: property.value};
if (completeDescriptor) {
descriptor.writable = false;
descriptor.configurable = false;
descriptor.enumerable = false;
descriptor.isOwn = true;
}
descriptors.push(descriptor);
}
return descriptors;
}
_propertyDescriptors(object, collectionMode, nativeGettersAsValues)
{
if (InjectedScriptHost.subtype(object) === "proxy")
return [];
let descriptors = [];
let nameProcessed = new Set;
function createFakeValueDescriptor(name, symbol, descriptor, isOwnProperty, possibleNativeBindingGetter)
{
try {
let fakeDescriptor = {name, value: object[name], writable: descriptor.writable || false, configurable: descriptor.configurable || false, enumerable: descriptor.enumerable || false};
if (possibleNativeBindingGetter)
fakeDescriptor.nativeGetter = true;
if (isOwnProperty)
fakeDescriptor.isOwn = true;
if (symbol)
fakeDescriptor.symbol = symbol;
// Silence any possible unhandledrejection exceptions created from accessing a native accessor with a wrong this object.
if (fakeDescriptor.value instanceof Promise)
fakeDescriptor.value.catch(function(){});
return fakeDescriptor;
} catch (e) {
let errorDescriptor = {name, value: e, wasThrown: true};
if (isOwnProperty)
errorDescriptor.isOwn = true;
if (symbol)
errorDescriptor.symbol = symbol;
return errorDescriptor;
}
}
function processDescriptor(descriptor, isOwnProperty, possibleNativeBindingGetter)
{
// All properties.
if (collectionMode & InjectedScript.CollectionMode.AllProperties) {
descriptors.push(descriptor);
return;
}
// Own properties.
if (collectionMode & InjectedScript.CollectionMode.OwnProperties && isOwnProperty) {
descriptors.push(descriptor);
return;
}
// Native Getter properties.
if (collectionMode & InjectedScript.CollectionMode.NativeGetterProperties) {
if (possibleNativeBindingGetter) {
descriptors.push(descriptor);
return;
}
}
}
function processProperties(o, properties, isOwnProperty)
{
for (let i = 0; i < properties.length; ++i) {
let property = properties[i];
if (nameProcessed.has(property) || property === "__proto__")
continue;
nameProcessed.add(property);
let name = toString(property);
let symbol = isSymbol(property) ? property : null;
let descriptor = Object.getOwnPropertyDescriptor(o, property);
if (!descriptor) {
// FIXME: Bad descriptor. Can we get here?
// Fall back to very restrictive settings.
let fakeDescriptor = createFakeValueDescriptor(name, symbol, {writable: false, configurable: false, enumerable: false}, isOwnProperty);
processDescriptor(fakeDescriptor, isOwnProperty);
continue;
}
if (nativeGettersAsValues) {
if (String(descriptor.get).endsWith("[native code]\n}") || (!descriptor.get && descriptor.hasOwnProperty("get") && !descriptor.set && descriptor.hasOwnProperty("set"))) {
// Developers may create such a descriptor, so we should be resilient:
// let x = {}; Object.defineProperty(x, "p", {get:undefined}); Object.getOwnPropertyDescriptor(x, "p")
let fakeDescriptor = createFakeValueDescriptor(name, symbol, descriptor, isOwnProperty, true);
processDescriptor(fakeDescriptor, isOwnProperty, true);
continue;
}
}
descriptor.name = name;
if (isOwnProperty)
descriptor.isOwn = true;
if (symbol)
descriptor.symbol = symbol;
processDescriptor(descriptor, isOwnProperty);
}
}
function arrayIndexPropertyNames(o, length)
{
let array = [];
for (let i = 0; i < length; ++i) {
if (i in o)
array.push("" + i);
}
return array;
}
// FIXME: <https://webkit.org/b/143589> Web Inspector: Better handling for large collections in Object Trees
// For array types with a large length we attempt to skip getOwnPropertyNames and instead just sublist of indexes.
let isArrayLike = false;
try {
isArrayLike = RemoteObject.subtype(object) === "array" && isFinite(object.length) && object.length > 0;
} catch(e) {}
for (let o = object; isDefined(o); o = Object.getPrototypeOf(o)) {
let isOwnProperty = o === object;
if (isArrayLike && isOwnProperty)
processProperties(o, arrayIndexPropertyNames(o, Math.min(object.length, 100)), isOwnProperty);
else {
processProperties(o, Object.getOwnPropertyNames(o), isOwnProperty);
if (Object.getOwnPropertySymbols)
processProperties(o, Object.getOwnPropertySymbols(o), isOwnProperty);
}
if (collectionMode === InjectedScript.CollectionMode.OwnProperties)
break;
}
// Always include __proto__ at the end.
try {
if (object.__proto__)
descriptors.push({name: "__proto__", value: object.__proto__, writable: true, configurable: true, enumerable: false, isOwn: true});
} catch (e) {}
return descriptors;
}
_getSetEntries(object, skip, numberToFetch)
{
let entries = [];
// FIXME: This is observable if the page overrides Set.prototype[Symbol.iterator].
for (let value of object) {
if (skip > 0) {
skip--;
continue;
}
entries.push({value});
if (numberToFetch && entries.length === numberToFetch)
break;
}
return entries;
}
_getMapEntries(object, skip, numberToFetch)
{
let entries = [];
// FIXME: This is observable if the page overrides Map.prototype[Symbol.iterator].
for (let [key, value] of object) {
if (skip > 0) {
skip--;
continue;
}
entries.push({key, value});
if (numberToFetch && entries.length === numberToFetch)
break;
}
return entries;
}
_getWeakMapEntries(object, numberToFetch)
{
return InjectedScriptHost.weakMapEntries(object, numberToFetch);
}
_getWeakSetEntries(object, numberToFetch)
{
return InjectedScriptHost.weakSetEntries(object, numberToFetch);
}
_getIteratorEntries(object, numberToFetch)
{
return InjectedScriptHost.iteratorEntries(object, numberToFetch);
}
_entries(object, subtype, startIndex, numberToFetch)
{
if (subtype === "set")
return this._getSetEntries(object, startIndex, numberToFetch);
if (subtype === "map")
return this._getMapEntries(object, startIndex, numberToFetch);
if (subtype === "weakmap")
return this._getWeakMapEntries(object, numberToFetch);
if (subtype === "weakset")
return this._getWeakSetEntries(object, numberToFetch);
if (subtype === "iterator")
return this._getIteratorEntries(object, numberToFetch);
throw "unexpected type";
}
_saveResult(result)
{
this._lastResult = result;
if (result === undefined || result === null)
return;
let existingIndex = this._savedResults.indexOf(result);
if (existingIndex !== -1) {
this._savedResultIndex = existingIndex;
return;
}
this._savedResultIndex = this._nextSavedResultIndex;
this._savedResults[this._nextSavedResultIndex++] = result;
// $n is limited from $1-$99. $0 is special.
if (this._nextSavedResultIndex >= 100)
this._nextSavedResultIndex = 1;
}
_savedResult(index)
{
return this._savedResults[index];
}
}
InjectedScript.CollectionMode = {
OwnProperties: 1 << 0, // own properties.
NativeGetterProperties: 1 << 1, // native getter properties in the prototype chain.
AllProperties: 1 << 2, // all properties in the prototype chain.
};
var injectedScript = new InjectedScript;
// -------
let RemoteObject = class RemoteObject
{
constructor(object, objectGroupName, forceValueType, generatePreview, columnNames)
{
this.type = typeof object;
if (this.type === "undefined" && InjectedScriptHost.isHTMLAllCollection(object))
this.type = "object";
if (isPrimitiveValue(object) || object === null || forceValueType) {
// We don't send undefined values over JSON.
if (this.type !== "undefined")
this.value = object;
// Null object is object with 'null' subtype.
if (object === null)
this.subtype = "null";
// Provide user-friendly number values.
if (this.type === "number")
this.description = toStringDescription(object);
return;
}
this.objectId = injectedScript._bind(object, objectGroupName);
let subtype = RemoteObject.subtype(object);
if (subtype)
this.subtype = subtype;
this.className = InjectedScriptHost.internalConstructorName(object);
this.description = RemoteObject.describe(object);
if (subtype === "array")
this.size = typeof object.length === "number" ? object.length : 0;
else if (subtype === "set" || subtype === "map")
this.size = object.size;
else if (subtype === "weakmap")
this.size = InjectedScriptHost.weakMapSize(object);
else if (subtype === "weakset")
this.size = InjectedScriptHost.weakSetSize(object);
else if (subtype === "class") {
this.classPrototype = RemoteObject.create(object.prototype, objectGroupName);
this.className = object.name;
}
if (generatePreview && this.type === "object") {
if (subtype === "proxy") {
this.preview = this._generatePreview(InjectedScriptHost.proxyTargetValue(object));
this.preview.lossless = false;
} else
this.preview = this._generatePreview(object, undefined, columnNames);
}
}
// Static
static create(object, objectGroupName, forceValueType, generatePreview, columnNames)
{
try {
return new RemoteObject(object, objectGroupName, forceValueType, generatePreview, columnNames);
} catch (e) {
let description;
try {
description = RemoteObject.describe(e);
} catch (ex) {
alert(ex.message);
description = "<failed to convert exception to string>";
}
return new RemoteObject(description);
}
}
static createObjectPreviewForValue(value, generatePreview, columnNames)
{
let remoteObject = new RemoteObject(value, undefined, false, generatePreview, columnNames);
if (remoteObject.objectId)
injectedScript.releaseObject(remoteObject.objectId);
if (remoteObject.classPrototype && remoteObject.classPrototype.objectId)
injectedScript.releaseObject(remoteObject.classPrototype.objectId);
return remoteObject.preview || remoteObject._emptyPreview();
}
static subtype(value)
{
if (value === null)
return "null";
if (isPrimitiveValue(value) || isSymbol(value))
return null;
if (InjectedScriptHost.isHTMLAllCollection(value))
return "array";
let preciseType = InjectedScriptHost.subtype(value);
if (preciseType)
return preciseType;
// FireBug's array detection.
try {
if (typeof value.splice === "function" && isFinite(value.length))
return "array";
} catch (e) {}
return null;
}
static describe(value)
{
if (isPrimitiveValue(value))
return null;
if (isSymbol(value))
return toString(value);
let subtype = RemoteObject.subtype(value);
if (subtype === "regexp")
return toString(value);
if (subtype === "date")
return toString(value);
if (subtype === "error")
return toString(value);
if (subtype === "proxy")
return "Proxy";
if (subtype === "node")
return RemoteObject.nodePreview(value);
let className = InjectedScriptHost.internalConstructorName(value);
if (subtype === "array")
return className;
if (subtype === "iterator" && Symbol.toStringTag in value)
return value[Symbol.toStringTag];
// NodeList in JSC is a function, check for array prior to this.
if (typeof value === "function")
return value.toString();
// If Object, try for a better name from the constructor.
if (className === "Object") {
let constructorName = value.constructor && value.constructor.name;
if (constructorName)
return constructorName;
}
return className;
}
static nodePreview(node)