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Viewing file:     javascript.js (11.53 KB)      -rw-r--r--

"use strict";

Object.defineProperty(exports, "__esModule", {
  value: true
});
exports.JavaScriptErrorInEvaluate = exports.JSHandle = exports.ExecutionContext = void 0;
exports.evaluate = evaluate;
exports.evaluateExpression = evaluateExpression;
exports.isJavaScriptErrorInEvaluate = isJavaScriptErrorInEvaluate;
exports.normalizeEvaluationExpression = normalizeEvaluationExpression;
exports.parseUnserializableValue = parseUnserializableValue;
exports.sparseArrayToString = sparseArrayToString;
var utilityScriptSource = _interopRequireWildcard(require("../generated/utilityScriptSource"));
var _utilityScriptSerializers = require("./isomorphic/utilityScriptSerializers");
var _instrumentation = require("./instrumentation");
var _manualPromise = require("../utils/manualPromise");
function _getRequireWildcardCache(e) { if ("function" != typeof WeakMap) return null; var r = new WeakMap(), t = new WeakMap(); return (_getRequireWildcardCache = function (e) { return e ? t : r; })(e); }
function _interopRequireWildcard(e, r) { if (!r && e && e.__esModule) return e; if (null === e || "object" != typeof e && "function" != typeof e) return { default: e }; var t = _getRequireWildcardCache(r); if (t && t.has(e)) return t.get(e); var n = { __proto__: null }, a = Object.defineProperty && Object.getOwnPropertyDescriptor; for (var u in e) if ("default" !== u && Object.prototype.hasOwnProperty.call(e, u)) { var i = a ? Object.getOwnPropertyDescriptor(e, u) : null; i && (i.get || i.set) ? Object.defineProperty(n, u, i) : n[u] = e[u]; } return n.default = e, t && t.set(e, n), n; }
/**
 * Copyright (c) Microsoft Corporation.
 *
 * 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.
 */

class ExecutionContext extends _instrumentation.SdkObject {
  constructor(parent, delegate, worldNameForTest) {
    super(parent, 'execution-context');
    this._delegate = void 0;
    this._utilityScriptPromise = void 0;
    this._contextDestroyedScope = new _manualPromise.LongStandingScope();
    this.worldNameForTest = void 0;
    this.worldNameForTest = worldNameForTest;
    this._delegate = delegate;
  }
  contextDestroyed(reason) {
    this._contextDestroyedScope.close(new Error(reason));
  }
  async _raceAgainstContextDestroyed(promise) {
    return this._contextDestroyedScope.race(promise);
  }
  rawEvaluateJSON(expression) {
    return this._raceAgainstContextDestroyed(this._delegate.rawEvaluateJSON(expression));
  }
  rawEvaluateHandle(expression) {
    return this._raceAgainstContextDestroyed(this._delegate.rawEvaluateHandle(expression));
  }
  rawCallFunctionNoReply(func, ...args) {
    this._delegate.rawCallFunctionNoReply(func, ...args);
  }
  evaluateWithArguments(expression, returnByValue, utilityScript, values, objectIds) {
    return this._raceAgainstContextDestroyed(this._delegate.evaluateWithArguments(expression, returnByValue, utilityScript, values, objectIds));
  }
  getProperties(context, objectId) {
    return this._raceAgainstContextDestroyed(this._delegate.getProperties(context, objectId));
  }
  createHandle(remoteObject) {
    return this._delegate.createHandle(this, remoteObject);
  }
  releaseHandle(objectId) {
    return this._delegate.releaseHandle(objectId);
  }
  adoptIfNeeded(handle) {
    return null;
  }
  utilityScript() {
    if (!this._utilityScriptPromise) {
      const source = `
      (() => {
        const module = {};
        ${utilityScriptSource.source}
        return new (module.exports.UtilityScript())();
      })();`;
      this._utilityScriptPromise = this._raceAgainstContextDestroyed(this._delegate.rawEvaluateHandle(source).then(objectId => new JSHandle(this, 'object', 'UtilityScript', objectId)));
    }
    return this._utilityScriptPromise;
  }
  async objectCount(objectId) {
    return this._delegate.objectCount(objectId);
  }
  async doSlowMo() {
    // overridden in FrameExecutionContext
  }
}
exports.ExecutionContext = ExecutionContext;
class JSHandle extends _instrumentation.SdkObject {
  constructor(context, type, preview, objectId, value) {
    super(context, 'handle');
    this.__jshandle = true;
    this._context = void 0;
    this._disposed = false;
    this._objectId = void 0;
    this._value = void 0;
    this._objectType = void 0;
    this._preview = void 0;
    this._previewCallback = void 0;
    this._context = context;
    this._objectId = objectId;
    this._value = value;
    this._objectType = type;
    this._preview = this._objectId ? preview || `JSHandle@${this._objectType}` : String(value);
    if (this._objectId && globalThis.leakedJSHandles) globalThis.leakedJSHandles.set(this, new Error('Leaked JSHandle'));
  }
  callFunctionNoReply(func, arg) {
    this._context.rawCallFunctionNoReply(func, this, arg);
  }
  async evaluate(pageFunction, arg) {
    return evaluate(this._context, true /* returnByValue */, pageFunction, this, arg);
  }
  async evaluateHandle(pageFunction, arg) {
    return evaluate(this._context, false /* returnByValue */, pageFunction, this, arg);
  }
  async evaluateExpression(expression, options, arg) {
    const value = await evaluateExpression(this._context, expression, {
      ...options,
      returnByValue: true
    }, this, arg);
    await this._context.doSlowMo();
    return value;
  }
  async evaluateExpressionHandle(expression, options, arg) {
    const value = await evaluateExpression(this._context, expression, {
      ...options,
      returnByValue: false
    }, this, arg);
    await this._context.doSlowMo();
    return value;
  }
  async getProperty(propertyName) {
    const objectHandle = await this.evaluateHandle((object, propertyName) => {
      const result = {
        __proto__: null
      };
      result[propertyName] = object[propertyName];
      return result;
    }, propertyName);
    const properties = await objectHandle.getProperties();
    const result = properties.get(propertyName);
    objectHandle.dispose();
    return result;
  }
  async getProperties() {
    if (!this._objectId) return new Map();
    return this._context.getProperties(this._context, this._objectId);
  }
  rawValue() {
    return this._value;
  }
  async jsonValue() {
    if (!this._objectId) return this._value;
    const utilityScript = await this._context.utilityScript();
    const script = `(utilityScript, ...args) => utilityScript.jsonValue(...args)`;
    return this._context.evaluateWithArguments(script, true, utilityScript, [true], [this._objectId]);
  }
  asElement() {
    return null;
  }
  dispose() {
    if (this._disposed) return;
    this._disposed = true;
    if (this._objectId) {
      this._context.releaseHandle(this._objectId).catch(e => {});
      if (globalThis.leakedJSHandles) globalThis.leakedJSHandles.delete(this);
    }
  }
  toString() {
    return this._preview;
  }
  _setPreviewCallback(callback) {
    this._previewCallback = callback;
  }
  preview() {
    return this._preview;
  }
  worldNameForTest() {
    return this._context.worldNameForTest;
  }
  _setPreview(preview) {
    this._preview = preview;
    if (this._previewCallback) this._previewCallback(preview);
  }
  async objectCount() {
    if (!this._objectId) throw new Error('Can only count objects for a handle that points to the constructor prototype');
    return this._context.objectCount(this._objectId);
  }
}
exports.JSHandle = JSHandle;
async function evaluate(context, returnByValue, pageFunction, ...args) {
  return evaluateExpression(context, String(pageFunction), {
    returnByValue,
    isFunction: typeof pageFunction === 'function'
  }, ...args);
}
async function evaluateExpression(context, expression, options, ...args) {
  const utilityScript = await context.utilityScript();
  expression = normalizeEvaluationExpression(expression, options.isFunction);
  const handles = [];
  const toDispose = [];
  const pushHandle = handle => {
    handles.push(handle);
    return handles.length - 1;
  };
  args = args.map(arg => (0, _utilityScriptSerializers.serializeAsCallArgument)(arg, handle => {
    if (handle instanceof JSHandle) {
      if (!handle._objectId) return {
        fallThrough: handle._value
      };
      if (handle._disposed) throw new JavaScriptErrorInEvaluate('JSHandle is disposed!');
      const adopted = context.adoptIfNeeded(handle);
      if (adopted === null) return {
        h: pushHandle(Promise.resolve(handle))
      };
      toDispose.push(adopted);
      return {
        h: pushHandle(adopted)
      };
    }
    return {
      fallThrough: handle
    };
  }));
  const utilityScriptObjectIds = [];
  for (const handle of await Promise.all(handles)) {
    if (handle._context !== context) throw new JavaScriptErrorInEvaluate('JSHandles can be evaluated only in the context they were created!');
    utilityScriptObjectIds.push(handle._objectId);
  }

  // See UtilityScript for arguments.
  const utilityScriptValues = [options.isFunction, options.returnByValue, options.exposeUtilityScript, expression, args.length, ...args];
  const script = `(utilityScript, ...args) => utilityScript.evaluate(...args)`;
  try {
    return await context.evaluateWithArguments(script, options.returnByValue || false, utilityScript, utilityScriptValues, utilityScriptObjectIds);
  } finally {
    toDispose.map(handlePromise => handlePromise.then(handle => handle.dispose()));
  }
}
function parseUnserializableValue(unserializableValue) {
  if (unserializableValue === 'NaN') return NaN;
  if (unserializableValue === 'Infinity') return Infinity;
  if (unserializableValue === '-Infinity') return -Infinity;
  if (unserializableValue === '-0') return -0;
}
function normalizeEvaluationExpression(expression, isFunction) {
  expression = expression.trim();
  if (isFunction) {
    try {
      new Function('(' + expression + ')');
    } catch (e1) {
      // This means we might have a function shorthand. Try another
      // time prefixing 'function '.
      if (expression.startsWith('async ')) expression = 'async function ' + expression.substring('async '.length);else expression = 'function ' + expression;
      try {
        new Function('(' + expression + ')');
      } catch (e2) {
        // We tried hard to serialize, but there's a weird beast here.
        throw new Error('Passed function is not well-serializable!');
      }
    }
  }
  if (/^(async)?\s*function(\s|\()/.test(expression)) expression = '(' + expression + ')';
  return expression;
}

// Error inside the expression evaluation as opposed to a protocol error.
class JavaScriptErrorInEvaluate extends Error {}
exports.JavaScriptErrorInEvaluate = JavaScriptErrorInEvaluate;
function isJavaScriptErrorInEvaluate(error) {
  return error instanceof JavaScriptErrorInEvaluate;
}
function sparseArrayToString(entries) {
  const arrayEntries = [];
  for (const {
    name,
    value
  } of entries) {
    const index = +name;
    if (isNaN(index) || index < 0) continue;
    arrayEntries.push({
      index,
      value
    });
  }
  arrayEntries.sort((a, b) => a.index - b.index);
  let lastIndex = -1;
  const tokens = [];
  for (const {
    index,
    value
  } of arrayEntries) {
    const emptyItems = index - lastIndex - 1;
    if (emptyItems === 1) tokens.push(`empty`);else if (emptyItems > 1) tokens.push(`empty x ${emptyItems}`);
    tokens.push(String(value));
    lastIndex = index;
  }
  return '[' + tokens.join(', ') + ']';
}