jiangchengfeiyi-xiaochengxu/node_modules/mathjs/lib/esm/expression/node/ObjectNode.js

import _defineProperty from "@babel/runtime/helpers/defineProperty";
import { getSafeProperty } from '../../utils/customs.js';
import { factory } from '../../utils/factory.js';
import { isNode } from '../../utils/is.js';
import { hasOwnProperty } from '../../utils/object.js';
import { escape, stringify } from '../../utils/string.js';
var name = 'ObjectNode';
var dependencies = ['Node'];
export var createObjectNode = /* #__PURE__ */factory(name, dependencies, _ref => {
  var {
    Node
  } = _ref;
  class ObjectNode extends Node {
    /**
     * @constructor ObjectNode
     * @extends {Node}
     * Holds an object with keys/values
     * @param {Object.<string, Node>} [properties]   object with key/value pairs
     */
    constructor(properties) {
      super();
      this.properties = properties || {};

      // validate input
      if (properties) {
        if (!(typeof properties === 'object') || !Object.keys(properties).every(function (key) {
          return isNode(properties[key]);
        })) {
          throw new TypeError('Object containing Nodes expected');
        }
      }
    }
    get type() {
      return name;
    }
    get isObjectNode() {
      return true;
    }

    /**
     * Compile a node into a JavaScript function.
     * This basically pre-calculates as much as possible and only leaves open
     * calculations which depend on a dynamic scope with variables.
     * @param {Object} math     Math.js namespace with functions and constants.
     * @param {Object} argNames An object with argument names as key and `true`
     *                          as value. Used in the SymbolNode to optimize
     *                          for arguments from user assigned functions
     *                          (see FunctionAssignmentNode) or special symbols
     *                          like `end` (see IndexNode).
     * @return {function} Returns a function which can be called like:
     *                        evalNode(scope: Object, args: Object, context: *)
     */
    _compile(math, argNames) {
      var evalEntries = {};
      for (var key in this.properties) {
        if (hasOwnProperty(this.properties, key)) {
          // we stringify/parse the key here to resolve unicode characters,
          // so you cannot create a key like {"co\\u006Estructor": null}
          var stringifiedKey = stringify(key);
          var parsedKey = JSON.parse(stringifiedKey);
          var prop = getSafeProperty(this.properties, key);
          evalEntries[parsedKey] = prop._compile(math, argNames);
        }
      }
      return function evalObjectNode(scope, args, context) {
        var obj = {};
        for (var _key in evalEntries) {
          if (hasOwnProperty(evalEntries, _key)) {
            obj[_key] = evalEntries[_key](scope, args, context);
          }
        }
        return obj;
      };
    }

    /**
     * Execute a callback for each of the child nodes of this node
     * @param {function(child: Node, path: string, parent: Node)} callback
     */
    forEach(callback) {
      for (var key in this.properties) {
        if (hasOwnProperty(this.properties, key)) {
          callback(this.properties[key], 'properties[' + stringify(key) + ']', this);
        }
      }
    }

    /**
     * Create a new ObjectNode whose children are the results of calling
     * the provided callback function for each child of the original node.
     * @param {function(child: Node, path: string, parent: Node): Node} callback
     * @returns {ObjectNode} Returns a transformed copy of the node
     */
    map(callback) {
      var properties = {};
      for (var key in this.properties) {
        if (hasOwnProperty(this.properties, key)) {
          properties[key] = this._ifNode(callback(this.properties[key], 'properties[' + stringify(key) + ']', this));
        }
      }
      return new ObjectNode(properties);
    }

    /**
     * Create a clone of this node, a shallow copy
     * @return {ObjectNode}
     */
    clone() {
      var properties = {};
      for (var key in this.properties) {
        if (hasOwnProperty(this.properties, key)) {
          properties[key] = this.properties[key];
        }
      }
      return new ObjectNode(properties);
    }

    /**
     * Get string representation
     * @param {Object} options
     * @return {string} str
     * @override
     */
    _toString(options) {
      var entries = [];
      for (var key in this.properties) {
        if (hasOwnProperty(this.properties, key)) {
          entries.push(stringify(key) + ': ' + this.properties[key].toString(options));
        }
      }
      return '{' + entries.join(', ') + '}';
    }

    /**
     * Get a JSON representation of the node
     * @returns {Object}
     */
    toJSON() {
      return {
        mathjs: name,
        properties: this.properties
      };
    }

    /**
     * Instantiate an OperatorNode from its JSON representation
     * @param {Object} json  An object structured like
     *                       `{"mathjs": "ObjectNode", "properties": {...}}`,
     *                       where mathjs is optional
     * @returns {ObjectNode}
     */
    static fromJSON(json) {
      return new ObjectNode(json.properties);
    }

    /**
     * Get HTML representation
     * @param {Object} options
     * @return {string} str
     * @override
     */
    _toHTML(options) {
      var entries = [];
      for (var key in this.properties) {
        if (hasOwnProperty(this.properties, key)) {
          entries.push('<span class="math-symbol math-property">' + escape(key) + '</span>' + '<span class="math-operator math-assignment-operator ' + 'math-property-assignment-operator math-binary-operator">' + ':</span>' + this.properties[key].toHTML(options));
        }
      }
      return '<span class="math-parenthesis math-curly-parenthesis">{</span>' + entries.join('<span class="math-separator">,</span>') + '<span class="math-parenthesis math-curly-parenthesis">}</span>';
    }

    /**
     * Get LaTeX representation
     * @param {Object} options
     * @return {string} str
     */
    _toTex(options) {
      var entries = [];
      for (var key in this.properties) {
        if (hasOwnProperty(this.properties, key)) {
          entries.push('\\mathbf{' + key + ':} & ' + this.properties[key].toTex(options) + '\\\\');
        }
      }
      var tex = '\\left\\{\\begin{array}{ll}' + entries.join('\n') + '\\end{array}\\right\\}';
      return tex;
    }
  }
  _defineProperty(ObjectNode, "name", name);
  return ObjectNode;
}, {
  isClass: true,
  isNode: true
});