fiql-query-builder/lib/tree/exp-node.js

This module provides the utility to generate valid FIQL query strings by using a JSON objects or the custom classes provided.

'use strict';

Object.defineProperty(exports, "__esModule", {
  value: true
});
exports.OrNode = exports.AndNode = exports.ExpNode = undefined;

var _createClass = function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ("value" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; }();

var _exception = require('../exception');

var _ = require('./');

function _possibleConstructorReturn(self, call) { if (!self) { throw new ReferenceError("this hasn't been initialised - super() hasn't been called"); } return call && (typeof call === "object" || typeof call === "function") ? call : self; }

function _inherits(subClass, superClass) { if (typeof superClass !== "function" && superClass !== null) { throw new TypeError("Super expression must either be null or a function, not " + typeof superClass); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, enumerable: false, writable: true, configurable: true } }); if (superClass) Object.setPrototypeOf ? Object.setPrototypeOf(subClass, superClass) : subClass.__proto__ = superClass; }

function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }

/**
 * Generic boolean expression node
 */
var ExpNode = exports.ExpNode = function () {
  /**
   * Initialise the node
   * @param {FiqlNode[]} children A list of child nodes to evaulate
   * @param {String} operator The boolean operator (e.g. and, or)
   */
  function ExpNode(operator, children) {
    _classCallCheck(this, ExpNode);

    this.operator = operator;
    this.children = children;
  }

  _createClass(ExpNode, [{
    key: 'build',
    value: function build() {
      if (!Array.isArray(this.children)) {
        throw new _exception.InvalidExpressionChildError('Expression must have Array child.');
      }
      // Recursively build children and then join using the operator
      return '' + this.children.map(function (child) {
        if (child instanceof _.OpNode || child instanceof ExpNode || child instanceof _.GroupNode || child instanceof _.LeafNode) {
          return child.build();
        }
        throw new _exception.InvalidExpressionChildError('Boolean expression child must be operators, values or (grouped) boolean expression.');
      }).join(this.operator);
    }
  }]);

  return ExpNode;
}();

var AndNode = exports.AndNode = function (_ExpNode) {
  _inherits(AndNode, _ExpNode);

  function AndNode(children) {
    _classCallCheck(this, AndNode);

    return _possibleConstructorReturn(this, (AndNode.__proto__ || Object.getPrototypeOf(AndNode)).call(this, ';', children));
  }

  return AndNode;
}(ExpNode);

var OrNode = exports.OrNode = function (_ExpNode2) {
  _inherits(OrNode, _ExpNode2);

  function OrNode(children) {
    _classCallCheck(this, OrNode);

    return _possibleConstructorReturn(this, (OrNode.__proto__ || Object.getPrototypeOf(OrNode)).call(this, ',', children));
  }

  return OrNode;
}(ExpNode);