parser-combinator/build/lib/data/list.js

Parser combinators

"use strict";

Object.defineProperty(exports, "__esModule", {
    value: true
});

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; }; }();

exports.default = function () {
    if (arguments.length === 1 && Array.isArray(arguments[0])) {
        return new List(arguments[0]);
    }

    return new List(Array.prototype.slice.call(arguments));
};

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

/*
 * Parsec
 * https://github.com/d-plaindoux/parsec
 *
 * Copyright (c) 2015-2016 Didier Plaindoux
 * Licensed under the LGPL2 license.
 */

var List = function () {
    function List(value) {
        _classCallCheck(this, List);

        this.value = value;
    }

    _createClass(List, [{
        key: "size",
        value: function size() {
            return this.value.length;
        }
    }, {
        key: "isEmpty",
        value: function isEmpty() {
            return this.value.length === 0;
        }
    }, {
        key: "add",
        value: function add(element) {
            return new List(this.value.concat([element]));
        }
    }, {
        key: "append",
        value: function append(list) {
            return new List(this.value.concat(list.value));
        }
    }, {
        key: "filter",
        value: function filter(funcall) {
            var result = [];
            for (var i = 0; i < this.value.length; i++) {
                if (funcall(this.value[i])) {
                    result.push(this.value[i]);
                }
            }
            return new List(result);
        }
    }, {
        key: "map",
        value: function map(funcall) {
            return new List(this.value.map(funcall));
        }
    }, {
        key: "flatmap",
        value: function flatmap(funcall) {
            var result = new List([]);
            this.value.forEach(function (value) {
                result = result.append(funcall(value));
            });
            return result;
        }
    }, {
        key: "array",
        value: function array() {
            return this.value.slice();
        }
    }, {
        key: "join",
        value: function join(sep) {
            return this.value.join(sep);
        }
    }]);

    return List;
}();
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