dist
This commit is contained in:
Mahdi Dibaiee
parent
e5f272b17c
commit
b129317f5f
1
.gitignore
vendored
1
.gitignore
vendored
@ -1,4 +1,3 @@
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node_modules
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.DS_Store
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dist
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.npm-debug
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751
dist/browser.js
vendored
Normal file
751
dist/browser.js
vendored
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@ -0,0 +1,751 @@
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(function(f){if(typeof exports==="object"&&typeof module!=="undefined"){module.exports=f()}else if(typeof define==="function"&&define.amd){define([],f)}else{var g;if(typeof window!=="undefined"){g=window}else if(typeof global!=="undefined"){g=global}else if(typeof self!=="undefined"){g=self}else{g=this}g.Equation = f()}})(function(){var define,module,exports;return (function e(t,n,r){function s(o,u){if(!n[o]){if(!t[o]){var a=typeof require=="function"&&require;if(!u&&a)return a(o,!0);if(i)return i(o,!0);var f=new Error("Cannot find module '"+o+"'");throw f.code="MODULE_NOT_FOUND",f}var l=n[o]={exports:{}};t[o][0].call(l.exports,function(e){var n=t[o][1][e];return s(n?n:e)},l,l.exports,e,t,n,r)}return n[o].exports}var i=typeof require=="function"&&require;for(var o=0;o<r.length;o++)s(r[o]);return s})({1:[function(require,module,exports){
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'use strict';
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Object.defineProperty(exports, '__esModule', {
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value: true
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});
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/*
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* Constats
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* Keys must be UPPERCASE
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* Values Can be a constant value or a function returning a value
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* this function doesn't take any arguments (use case: random constats)
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*/
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exports['default'] = {
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PI: Math.PI,
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E: Math.E,
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RAND: Math.random
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};
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module.exports = exports['default'];
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},{}],2:[function(require,module,exports){
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'use strict';
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Object.defineProperty(exports, '__esModule', {
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value: true
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});
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var parseFormat = function parseFormat(a) {
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var split = a.split('1');
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return {
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left: split[0].length,
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right: split[1].length
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};
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};
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exports.parseFormat = parseFormat;
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var isNumber = function isNumber(a) {
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return !isNaN(+a);
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};
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exports.isNumber = isNumber;
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var parseNumbers = (function (_parseNumbers) {
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function parseNumbers(_x) {
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return _parseNumbers.apply(this, arguments);
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}
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parseNumbers.toString = function () {
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return _parseNumbers.toString();
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};
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return parseNumbers;
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})(function (a) {
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return a.map(function (b) {
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if (isNumber(b)) {
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return parseFloat(b);
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}
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if (Array.isArray(b)) {
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return parseNumbers(b);
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}
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return b;
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});
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});
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exports.parseNumbers = parseNumbers;
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var dive = function dive(arr, n) {
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var result = arr;
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for (var i = 0; i < n; ++i) {
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result = result[result.length - 1];
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}
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return result;
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};
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exports.dive = dive;
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var deep = (function (_deep) {
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function deep(_x2, _x3) {
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return _deep.apply(this, arguments);
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}
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deep.toString = function () {
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return _deep.toString();
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};
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return deep;
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})(function (arr, n) {
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var index = arguments[2] === undefined ? 0 : arguments[2];
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if (n < 2) {
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return { arr: arr, index: index };
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}
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var d = arr.reduce(function (a, b, i) {
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if (Array.isArray(b)) {
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var _deep2 = deep(b, n - 1, i);
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var _arr = _deep2.arr;
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var x = _deep2.index;
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var merged = a.concat(_arr);
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index = x;
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return merged;
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}
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return a;
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}, []);
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return { arr: d, index: index };
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});
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exports.deep = deep;
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var diveTo = (function (_diveTo) {
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function diveTo(_x4, _x5, _x6) {
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return _diveTo.apply(this, arguments);
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}
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diveTo.toString = function () {
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return _diveTo.toString();
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};
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return diveTo;
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})(function (arr, indexes, replace) {
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var answer = [];
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if (indexes.some(Array.isArray)) {
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var _iteratorNormalCompletion = true;
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var _didIteratorError = false;
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var _iteratorError = undefined;
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try {
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for (var _iterator = indexes[Symbol.iterator](), _step; !(_iteratorNormalCompletion = (_step = _iterator.next()).done); _iteratorNormalCompletion = true) {
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var index = _step.value;
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answer.push(diveTo(arr, index, replace));
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}
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} catch (err) {
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_didIteratorError = true;
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_iteratorError = err;
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} finally {
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try {
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if (!_iteratorNormalCompletion && _iterator['return']) {
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_iterator['return']();
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}
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} finally {
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if (_didIteratorError) {
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throw _iteratorError;
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}
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}
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}
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} else {
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arr[indexes[0]] = replace;
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return replace;
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}
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return answer;
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});
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exports.diveTo = diveTo;
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var flatten = (function (_flatten) {
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function flatten(_x7) {
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return _flatten.apply(this, arguments);
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}
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flatten.toString = function () {
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return _flatten.toString();
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};
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return flatten;
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})(function (arr) {
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if (!Array.isArray(arr) || !arr.some(Array.isArray)) {
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return arr;
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}
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return arr.reduce(function (a, b) {
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return a.concat(flatten(b));
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}, []);
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});
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exports.flatten = flatten;
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var removeSymbols = function removeSymbols(string) {
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return string.replace(/\W/g, '');
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};
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exports.removeSymbols = removeSymbols;
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},{}],3:[function(require,module,exports){
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'use strict';
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var _interopRequireWildcard = function (obj) { return obj && obj.__esModule ? obj : { 'default': obj }; };
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var _slicedToArray = function (arr, i) { if (Array.isArray(arr)) { return arr; } else if (Symbol.iterator in Object(arr)) { var _arr = []; var _n = true; var _d = false; var _e = undefined; try { for (var _i = arr[Symbol.iterator](), _s; !(_n = (_s = _i.next()).done); _n = true) { _arr.push(_s.value); if (i && _arr.length === i) break; } } catch (err) { _d = true; _e = err; } finally { try { if (!_n && _i['return']) _i['return'](); } finally { if (_d) throw _e; } } return _arr; } else { throw new TypeError('Invalid attempt to destructure non-iterable instance'); } };
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var _toConsumableArray = function (arr) { if (Array.isArray(arr)) { for (var i = 0, arr2 = Array(arr.length); i < arr.length; i++) arr2[i] = arr[i]; return arr2; } else { return Array.from(arr); } };
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Object.defineProperty(exports, '__esModule', {
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value: true
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});
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var _ReadStream = require('./readstream');
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var _ReadStream2 = _interopRequireWildcard(_ReadStream);
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var _operators = require('./operators');
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var _operators2 = _interopRequireWildcard(_operators);
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var _constants = require('./constats');
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var _constants2 = _interopRequireWildcard(_constants);
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var _import = require('./helpers');
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var _ = _interopRequireWildcard(_import);
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var Equation = {
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/**
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* Solves the given math expression, following these steps:
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* 1. Replace constants in the expression
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* 2. parse the expression, separating numbers and operators into
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* an array
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* 3. Sort the stack by operators' precedence, it actually groups the
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* operator with it's arguments n-level deep
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* 4. Apply parseFloat to numbers of the array
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* 5. Solve groups recursively
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*
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* @param {String} expression
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* The math expression to solve
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* @return {Number}
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* Result of the expression
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*/
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solve: function solve(expression) {
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// replace constants with their values
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expression = replaceConstants(expression);
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var stack = parseExpression(expression);
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stack = sortStack(stack);
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stack = _.parseNumbers(stack);
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stack = solveStack(stack);
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return stack;
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},
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/**
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* Creates an equation function which replaces variables
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* in the given expression with the values specified in order,
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* and solves the new expression
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*
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* Example:
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* equation('x+y+z')(2, 5, 6) => solve('2+5+6')
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*
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* @param {String} expression
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* The expression to create an equation for (containing variables)
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* @return {Function}
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* The function which replaces variables with values in order
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* and solves the expression
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*/
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equation: function equation(expression) {
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var stack = parseExpression(expression);
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var variables = [];
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stack.forEach(function (a) {
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if (typeof a === 'string' && !_.isNumber(a) && !_operators2['default'][a] && a === a.toLowerCase()) {
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// grouped variables like (y) need to have their parantheses removed
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variables.push(_.removeSymbols(a));
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}
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});
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return function () {
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for (var _len = arguments.length, args = Array(_len), _key = 0; _key < _len; _key++) {
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args[_key] = arguments[_key];
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}
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expression = expression.replace(/[a-z]*/g, function (a) {
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var index = variables.indexOf(a);
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if (index > -1) {
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return args[index] || 0;
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}
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return a;
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});
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return Equation.solve(expression);
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};
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}
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};
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var solveStack = (function (_solveStack) {
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function solveStack(_x) {
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return _solveStack.apply(this, arguments);
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}
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solveStack.toString = function () {
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return _solveStack.toString();
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||||
};
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return solveStack;
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})(function (stack) {
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// $0(stack);
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if (stack.some(Array.isArray)) {
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stack = stack.map(function (group) {
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if (!Array.isArray(group)) {
|
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return group;
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||||
}
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return solveStack(group);
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||||
});
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||||
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||||
return solveStack(stack);
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||||
} else {
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return evaluate(stack);
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||||
}
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||||
});
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var PRECEDENCES = Object.keys(_operators2['default']).map(function (key) {
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return _operators2['default'][key].precedence;
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});
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||||
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var MAX_PRECEDENCE = Math.max.apply(Math, _toConsumableArray(PRECEDENCES));
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||||
var MIN_PRECEDENCE = Math.min.apply(Math, _toConsumableArray(PRECEDENCES));
|
||||
|
||||
/**
|
||||
* Parses the given expression into an array of separated
|
||||
* numbers and operators/functions.
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||||
* The result is passed to parseGroups
|
||||
*
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||||
* @param {String} expression
|
||||
* The expression to parse
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||||
* @return {Array}
|
||||
* The parsed array
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||||
*/
|
||||
var parseExpression = function parseExpression(expression) {
|
||||
var stream = new _ReadStream2['default'](expression),
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stack = [],
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||||
record = '';
|
||||
|
||||
// Create an array of separated numbers & operators
|
||||
while (stream.next()) {
|
||||
var cur = stream.current();
|
||||
if (cur === ' ') {
|
||||
continue;
|
||||
}
|
||||
// it's probably a function with a length more than one
|
||||
if (!_.isNumber(cur) && !_operators2['default'][cur] && cur !== '.') {
|
||||
record += cur;
|
||||
} else if (record.length) {
|
||||
stack.push(record, cur);
|
||||
record = '';
|
||||
} else if (_.isNumber(stack[stack.length - 1]) && (_.isNumber(cur) || cur === '.')) {
|
||||
|
||||
stack[stack.length - 1] += cur;
|
||||
} else {
|
||||
stack.push(cur);
|
||||
}
|
||||
}
|
||||
if (record.length) {
|
||||
stack.push(record);
|
||||
}
|
||||
|
||||
return parseGroups(stack);
|
||||
};
|
||||
|
||||
/**
|
||||
* Takes the parsed array from parseExpression and
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* groups up expressions in parantheses in deep arrays
|
||||
*
|
||||
* Example: 2+(5+4) becomes [2, [5, '+', 4]]
|
||||
*
|
||||
* @param {Array} stack
|
||||
* The parsed expression
|
||||
* @return {Array}
|
||||
* Grouped up expression
|
||||
*/
|
||||
var parseGroups = function parseGroups(stack) {
|
||||
// Parantheses become inner arrays which will then be processed first
|
||||
var sub = 0;
|
||||
return stack.reduce(function (a, b) {
|
||||
if (b.indexOf('(') > -1) {
|
||||
if (b.length > 1) {
|
||||
_.dive(a, sub).push(b.replace('(', ''), []);
|
||||
} else {
|
||||
_.dive(a, sub).push([]);
|
||||
}
|
||||
sub++;
|
||||
} else if (b === ')') {
|
||||
sub--;
|
||||
} else {
|
||||
_.dive(a, sub).push(b);
|
||||
}
|
||||
return a;
|
||||
}, []);
|
||||
};
|
||||
|
||||
/**
|
||||
* Gives information about an operator's format
|
||||
* including number of left and right arguments
|
||||
*
|
||||
* @param {String/Object} operator
|
||||
* The operator object or operator name (e.g. +, -)
|
||||
* @return {Object}
|
||||
* An object including the count of left and right arguments
|
||||
*/
|
||||
var formatInfo = function formatInfo(operator) {
|
||||
var op = typeof operator === 'string' ? _operators2['default'][operator] : operator;
|
||||
|
||||
if (!op) {
|
||||
return null;
|
||||
}
|
||||
|
||||
var format = op.format.split('1'),
|
||||
left = format[0].length,
|
||||
right = format[1].length;
|
||||
|
||||
return { left: left, right: right };
|
||||
};
|
||||
|
||||
/**
|
||||
* Groups up operators and their arguments based on their precedence
|
||||
* in deep arrays, the higher the priority, the deeper the group.
|
||||
* This simplifies the evaluating process, the only thing to do is to
|
||||
* evaluate from bottom up, evaluating deep groups first
|
||||
*
|
||||
* @param {Array} stack
|
||||
* The parsed and grouped expression
|
||||
* @return {Array}
|
||||
* Grouped expression based on precedences
|
||||
*/
|
||||
var sortStack = (function (_sortStack) {
|
||||
function sortStack(_x2) {
|
||||
return _sortStack.apply(this, arguments);
|
||||
}
|
||||
|
||||
sortStack.toString = function () {
|
||||
return _sortStack.toString();
|
||||
};
|
||||
|
||||
return sortStack;
|
||||
})(function (stack) {
|
||||
var _iteratorNormalCompletion = true;
|
||||
var _didIteratorError = false;
|
||||
var _iteratorError = undefined;
|
||||
|
||||
try {
|
||||
for (var _iterator = stack.entries()[Symbol.iterator](), _step; !(_iteratorNormalCompletion = (_step = _iterator.next()).done); _iteratorNormalCompletion = true) {
|
||||
var _step$value = _slicedToArray(_step.value, 2);
|
||||
|
||||
var index = _step$value[0];
|
||||
var item = _step$value[1];
|
||||
|
||||
if (Array.isArray(item)) {
|
||||
stack.splice(index, 1, sortStack(item));
|
||||
}
|
||||
}
|
||||
} catch (err) {
|
||||
_didIteratorError = true;
|
||||
_iteratorError = err;
|
||||
} finally {
|
||||
try {
|
||||
if (!_iteratorNormalCompletion && _iterator['return']) {
|
||||
_iterator['return']();
|
||||
}
|
||||
} finally {
|
||||
if (_didIteratorError) {
|
||||
throw _iteratorError;
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
for (var i = MIN_PRECEDENCE; i <= MAX_PRECEDENCE; i++) {
|
||||
for (var index = 0; index < stack.length; ++index) {
|
||||
var item = stack[index];
|
||||
var op = _operators2['default'][item];
|
||||
|
||||
if (!op || op.precedence !== i) {
|
||||
continue;
|
||||
}
|
||||
|
||||
var _formatInfo = formatInfo(op);
|
||||
|
||||
var left = _formatInfo.left;
|
||||
var right = _formatInfo.right;
|
||||
|
||||
var group = stack.splice(index - left, left + right + 1, []);
|
||||
stack[index - left] = group;
|
||||
|
||||
for (var y = 0; y < i; y++) {
|
||||
group = [group];
|
||||
}
|
||||
|
||||
index -= right;
|
||||
}
|
||||
}
|
||||
|
||||
return stack;
|
||||
});
|
||||
|
||||
/**
|
||||
* Evaluates the given math expression.
|
||||
* The expression is an array with an operator and arguments
|
||||
*
|
||||
* Example: evaluate([2, '+', 4]) == 6
|
||||
*
|
||||
* @param {Array} stack
|
||||
* A single math expression
|
||||
* @return {Number}
|
||||
* Result of the expression
|
||||
*/
|
||||
var evaluate = function evaluate(stack) {
|
||||
var _operators$op;
|
||||
|
||||
var op = findOperator(stack);
|
||||
if (!op) {
|
||||
return stack[0];
|
||||
}
|
||||
|
||||
var _formatInfo2 = formatInfo(op);
|
||||
|
||||
var left = _formatInfo2.left;
|
||||
|
||||
var leftArguments = stack.slice(0, left),
|
||||
rightArguments = stack.slice(left + 1);
|
||||
|
||||
return (_operators$op = _operators2['default'][op]).fn.apply(_operators$op, _toConsumableArray(leftArguments).concat(_toConsumableArray(rightArguments)));
|
||||
};
|
||||
|
||||
/**
|
||||
* Finds the first operator in an array and returns it
|
||||
*
|
||||
* @param {Array} arr
|
||||
* The array to look for an operator in
|
||||
* @return {Object}
|
||||
* The operator object or null if no operator is found
|
||||
*/
|
||||
var findOperator = function findOperator(arr) {
|
||||
var _iteratorNormalCompletion2 = true;
|
||||
var _didIteratorError2 = false;
|
||||
var _iteratorError2 = undefined;
|
||||
|
||||
try {
|
||||
for (var _iterator2 = arr[Symbol.iterator](), _step2; !(_iteratorNormalCompletion2 = (_step2 = _iterator2.next()).done); _iteratorNormalCompletion2 = true) {
|
||||
var o = _step2.value;
|
||||
|
||||
if (typeof o === 'string') {
|
||||
return o;
|
||||
}
|
||||
}
|
||||
} catch (err) {
|
||||
_didIteratorError2 = true;
|
||||
_iteratorError2 = err;
|
||||
} finally {
|
||||
try {
|
||||
if (!_iteratorNormalCompletion2 && _iterator2['return']) {
|
||||
_iterator2['return']();
|
||||
}
|
||||
} finally {
|
||||
if (_didIteratorError2) {
|
||||
throw _iteratorError2;
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
return null;
|
||||
};
|
||||
|
||||
/**
|
||||
* Replaces constants in a string with their values
|
||||
*
|
||||
* @param {String} expression
|
||||
* The expression to replace constants in
|
||||
* @return {String}
|
||||
* The expression with constants replaced
|
||||
*/
|
||||
var replaceConstants = function replaceConstants(expression) {
|
||||
return expression.replace(/[A-Z]*/g, function (a) {
|
||||
var c = _constants2['default'][a];
|
||||
if (!c) {
|
||||
return a;
|
||||
}
|
||||
return typeof c === 'function' ? c() : c;
|
||||
});
|
||||
};
|
||||
|
||||
exports['default'] = Equation;
|
||||
module.exports = exports['default'];
|
||||
},{"./constats":1,"./helpers":2,"./operators":4,"./readstream":5}],4:[function(require,module,exports){
|
||||
'use strict';
|
||||
|
||||
Object.defineProperty(exports, '__esModule', {
|
||||
value: true
|
||||
});
|
||||
/*
|
||||
* Operators and Functions
|
||||
* fn: function used to evaluate value
|
||||
* format: the format using which arguments are parsed:
|
||||
* 0 indicates an argument and 1 indicates the operator
|
||||
* e.g: factorial is 01, add is 010, like 2!, 2+2
|
||||
* precedence: determines which operators should be evaluated first
|
||||
* the lower the value, the higher the precedence
|
||||
*/
|
||||
exports['default'] = {
|
||||
'^': {
|
||||
fn: function fn(a, b) {
|
||||
return Math.pow(a, b);
|
||||
},
|
||||
format: '010',
|
||||
precedence: 0
|
||||
},
|
||||
'*': {
|
||||
fn: function fn(a, b) {
|
||||
return a * b;
|
||||
},
|
||||
format: '010',
|
||||
precedence: 1
|
||||
},
|
||||
'/': {
|
||||
fn: function fn(a, b) {
|
||||
return a / b;
|
||||
},
|
||||
format: '010',
|
||||
precedence: 1
|
||||
},
|
||||
'%': {
|
||||
fn: function fn(a, b) {
|
||||
return a % b;
|
||||
},
|
||||
format: '010',
|
||||
precedence: 1
|
||||
},
|
||||
'\\': {
|
||||
fn: function fn(a, b) {
|
||||
return Math.floor(a / b);
|
||||
},
|
||||
format: '010',
|
||||
precedence: 1
|
||||
},
|
||||
'+': {
|
||||
fn: function fn(a, b) {
|
||||
return a + b;
|
||||
},
|
||||
format: '010',
|
||||
precedence: 2
|
||||
},
|
||||
'-': {
|
||||
fn: function fn(a, b) {
|
||||
return a - b;
|
||||
},
|
||||
format: '010',
|
||||
precedence: 2
|
||||
},
|
||||
'!': {
|
||||
fn: function fn(a) {
|
||||
var sum = 1;
|
||||
for (var i = 0; i < a; ++i) {
|
||||
sum *= i;
|
||||
}
|
||||
return sum;
|
||||
},
|
||||
format: '01',
|
||||
precedence: 2
|
||||
},
|
||||
log: {
|
||||
fn: Math.log,
|
||||
format: '10',
|
||||
precedence: -1
|
||||
},
|
||||
ln: {
|
||||
fn: Math.log,
|
||||
format: '10',
|
||||
precedence: -1
|
||||
},
|
||||
lg: {
|
||||
fn: function fn(a) {
|
||||
return Math.log(a) / Math.log(2);
|
||||
},
|
||||
format: '10',
|
||||
precedence: -1
|
||||
},
|
||||
sin: {
|
||||
fn: Math.sin,
|
||||
format: '10',
|
||||
precedence: -1
|
||||
},
|
||||
cos: {
|
||||
fn: Math.cos,
|
||||
format: '10',
|
||||
precedence: -1
|
||||
},
|
||||
tan: {
|
||||
fn: Math.tan,
|
||||
format: '10',
|
||||
precedence: -1
|
||||
},
|
||||
cot: {
|
||||
fn: Math.cot,
|
||||
format: '10',
|
||||
precedence: -1
|
||||
}
|
||||
};
|
||||
module.exports = exports['default'];
|
||||
},{}],5:[function(require,module,exports){
|
||||
'use strict';
|
||||
|
||||
Object.defineProperty(exports, '__esModule', {
|
||||
value: true
|
||||
});
|
||||
|
||||
exports['default'] = function (string) {
|
||||
var i = 0,
|
||||
buffer = [];
|
||||
return {
|
||||
next: function next() {
|
||||
buffer.push(string[i]);
|
||||
|
||||
if (i >= string.length) {
|
||||
return null;
|
||||
}
|
||||
return string[i++];
|
||||
},
|
||||
current: function current() {
|
||||
return string[i - 1];
|
||||
},
|
||||
index: function index() {
|
||||
return i - 1;
|
||||
},
|
||||
to: function to(n) {
|
||||
var temp = '';
|
||||
var dest = i + n;
|
||||
for (i = i; i < dest; ++i) {
|
||||
temp += [string[i]];
|
||||
}
|
||||
return temp;
|
||||
},
|
||||
drain: function drain() {
|
||||
return buffer.splice(0, buffer.length);
|
||||
},
|
||||
replace: (function (_replace) {
|
||||
function replace(_x, _x2, _x3) {
|
||||
return _replace.apply(this, arguments);
|
||||
}
|
||||
|
||||
replace.toString = function () {
|
||||
return _replace.toString();
|
||||
};
|
||||
|
||||
return replace;
|
||||
})(function (start, end, replace) {
|
||||
var temp = string.split('');
|
||||
temp.splice(start, end, replace);
|
||||
string = temp.join('');
|
||||
|
||||
i = i - (end - start);
|
||||
}),
|
||||
go: function go(n) {
|
||||
i += n;
|
||||
},
|
||||
all: function all() {
|
||||
return string;
|
||||
}
|
||||
};
|
||||
};
|
||||
|
||||
module.exports = exports['default'];
|
||||
},{}]},{},[3])(3)
|
||||
});
|
||||
Loading…
Reference in New Issue
Block a user