"use strict"; /** * Copyright 2017 Google Inc. All rights reserved. * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ Object.defineProperty(exports, "__esModule", { value: true }); exports.ExecutionContext = exports.EVALUATION_SCRIPT_URL = void 0; const helper_1 = require("./helper"); const JSHandle_1 = require("./JSHandle"); exports.EVALUATION_SCRIPT_URL = '__puppeteer_evaluation_script__'; const SOURCE_URL_REGEX = /^[\040\t]*\/\/[@#] sourceURL=\s*(\S*?)\s*$/m; class ExecutionContext { constructor(client, contextPayload, world) { this._client = client; this._world = world; this._contextId = contextPayload.id; } frame() { return this._world ? this._world.frame() : null; } async evaluate(pageFunction, ...args) { return await this._evaluateInternal(true, pageFunction, ...args); } async evaluateHandle(pageFunction, ...args) { return this._evaluateInternal(false, pageFunction, ...args); } async _evaluateInternal(returnByValue, pageFunction, ...args) { const suffix = `//# sourceURL=${exports.EVALUATION_SCRIPT_URL}`; if (helper_1.helper.isString(pageFunction)) { const contextId = this._contextId; const expression = pageFunction; const expressionWithSourceUrl = SOURCE_URL_REGEX.test(expression) ? expression : expression + '\n' + suffix; const { exceptionDetails, result: remoteObject } = await this._client .send('Runtime.evaluate', { expression: expressionWithSourceUrl, contextId, returnByValue, awaitPromise: true, userGesture: true, }) .catch(rewriteError); if (exceptionDetails) throw new Error('Evaluation failed: ' + helper_1.helper.getExceptionMessage(exceptionDetails)); return returnByValue ? helper_1.helper.valueFromRemoteObject(remoteObject) : JSHandle_1.createJSHandle(this, remoteObject); } if (typeof pageFunction !== 'function') throw new Error(`Expected to get |string| or |function| as the first argument, but got "${pageFunction}" instead.`); let functionText = pageFunction.toString(); try { new Function('(' + functionText + ')'); } catch (error) { // This means we might have a function shorthand. Try another // time prefixing 'function '. if (functionText.startsWith('async ')) functionText = 'async function ' + functionText.substring('async '.length); else functionText = 'function ' + functionText; try { new Function('(' + functionText + ')'); } catch (error) { // We tried hard to serialize, but there's a weird beast here. throw new Error('Passed function is not well-serializable!'); } } let callFunctionOnPromise; try { callFunctionOnPromise = this._client.send('Runtime.callFunctionOn', { functionDeclaration: functionText + '\n' + suffix + '\n', executionContextId: this._contextId, arguments: args.map(convertArgument.bind(this)), returnByValue, awaitPromise: true, userGesture: true, }); } catch (error) { if (error instanceof TypeError && error.message.startsWith('Converting circular structure to JSON')) error.message += ' Are you passing a nested JSHandle?'; throw error; } const { exceptionDetails, result: remoteObject, } = await callFunctionOnPromise.catch(rewriteError); if (exceptionDetails) throw new Error('Evaluation failed: ' + helper_1.helper.getExceptionMessage(exceptionDetails)); return returnByValue ? helper_1.helper.valueFromRemoteObject(remoteObject) : JSHandle_1.createJSHandle(this, remoteObject); /** * @param {*} arg * @return {*} * @this {ExecutionContext} */ function convertArgument(arg) { if (typeof arg === 'bigint') // eslint-disable-line valid-typeof return { unserializableValue: `${arg.toString()}n` }; if (Object.is(arg, -0)) return { unserializableValue: '-0' }; if (Object.is(arg, Infinity)) return { unserializableValue: 'Infinity' }; if (Object.is(arg, -Infinity)) return { unserializableValue: '-Infinity' }; if (Object.is(arg, NaN)) return { unserializableValue: 'NaN' }; const objectHandle = arg && arg instanceof JSHandle_1.JSHandle ? arg : null; if (objectHandle) { if (objectHandle._context !== this) throw new Error('JSHandles can be evaluated only in the context they were created!'); if (objectHandle._disposed) throw new Error('JSHandle is disposed!'); if (objectHandle._remoteObject.unserializableValue) return { unserializableValue: objectHandle._remoteObject.unserializableValue, }; if (!objectHandle._remoteObject.objectId) return { value: objectHandle._remoteObject.value }; return { objectId: objectHandle._remoteObject.objectId }; } return { value: arg }; } function rewriteError(error) { if (error.message.includes('Object reference chain is too long')) return { result: { type: 'undefined' } }; if (error.message.includes("Object couldn't be returned by value")) return { result: { type: 'undefined' } }; if (error.message.endsWith('Cannot find context with specified id') || error.message.endsWith('Inspected target navigated or closed')) throw new Error('Execution context was destroyed, most likely because of a navigation.'); throw error; } } async queryObjects(prototypeHandle) { helper_1.assert(!prototypeHandle._disposed, 'Prototype JSHandle is disposed!'); helper_1.assert(prototypeHandle._remoteObject.objectId, 'Prototype JSHandle must not be referencing primitive value'); const response = await this._client.send('Runtime.queryObjects', { prototypeObjectId: prototypeHandle._remoteObject.objectId, }); return JSHandle_1.createJSHandle(this, response.objects); } async _adoptBackendNodeId(backendNodeId) { const { object } = await this._client.send('DOM.resolveNode', { backendNodeId: backendNodeId, executionContextId: this._contextId, }); return JSHandle_1.createJSHandle(this, object); } async _adoptElementHandle(elementHandle) { helper_1.assert(elementHandle.executionContext() !== this, 'Cannot adopt handle that already belongs to this execution context'); helper_1.assert(this._world, 'Cannot adopt handle without DOMWorld'); const nodeInfo = await this._client.send('DOM.describeNode', { objectId: elementHandle._remoteObject.objectId, }); return this._adoptBackendNodeId(nodeInfo.node.backendNodeId); } } exports.ExecutionContext = ExecutionContext;