evaluatex.min.js

(()=>{"use strict";var e={697:(e,t)=>{Object.defineProperty(t,"__esModule",{value:!0});var n=function(){function e(e,t){for(var n=0;n<t.length;n++){var r=t[n];r.enumerable=r.enumerable||!1,r.configurable=!0,"value"in r&&(r.writable=!0),Object.defineProperty(e,r.key,r)}}return function(t,n,r){return n&&e(t.prototype,n),r&&e(t,r),t}}();function r(e,t){if(!(e instanceof t))throw new TypeError("Cannot call a class as a function")}var a=function(){function e(t){var n=arguments.length>1&&void 0!==arguments[1]?arguments[1]:"";r(this,e),this.type=t,this.value=n,this.name=null,this.children=[]}return n(e,[{key:"addChild",value:function(e){return this.children.push(e),this}},{key:"evaluate",value:function(t){var n=0;switch(this.type){case e.TYPE_FUNCTION:var r=this.children.map((function(e){return e.evaluate(t)}));n=this.value.apply(this,r);break;case e.TYPE_INVERSE:n=1/this.child.evaluate(t);break;case e.TYPE_NEGATE:n=-this.child.evaluate(t);break;case e.TYPE_NUMBER:n=this.value;break;case e.TYPE_POWER:n=Math.pow(this.children[0].evaluate(t),this.children[1].evaluate(t));break;case e.TYPE_PRODUCT:n=this.children.reduce((function(e,n){return e*n.evaluate(t)}),1);break;case e.TYPE_SUM:n=this.children.reduce((function(e,n){return e+n.evaluate(t)}),0);break;case e.TYPE_SYMBOL:if(isFinite(t[this.value]))return t[this.value];throw new Error("Symbol "+this.value+" is undefined or not a number")}return n}},{key:"isUnary",value:function(){return i.indexOf(this.type)>=0}},{key:"printTree",value:function(){for(var e=arguments.length>0&&void 0!==arguments[0]?arguments[0]:0,t="",n="  ",r=0;r<e;r++)t+=n;for(var a in console.log(t+this.toString()),this.children)this.children[a].printTree(e+1)}},{key:"simplify",value:function(){if(this.children.length>1||this.isUnary()){var t=new e(this.type,this.value);for(var n in this.children)t.addChild(this.children[n].simplify());return t}return 1===this.children.length?this.children[0].simplify():this}},{key:"toString",value:function(){var e="function"==typeof this.value?this.name:this.value;return this.children.length+" "+this.type+" ["+e+"]"}},{key:"child",get:function(){return this.children[0]}},{key:"nodeCount",get:function(){var e=1,t=!0,n=!1,r=void 0;try{for(var a,i=this.children[Symbol.iterator]();!(t=(a=i.next()).done);t=!0)e+=a.value.nodeCount}catch(e){n=!0,r=e}finally{try{!t&&i.return&&i.return()}finally{if(n)throw r}}return e}}]),e}();a.TYPE_FUNCTION="FUNCTION",a.TYPE_INVERSE="INVERSE",a.TYPE_NEGATE="NEGATE",a.TYPE_NUMBER="NUMBER",a.TYPE_POWER="POWER",a.TYPE_PRODUCT="PRODUCT",a.TYPE_SUM="SUM",a.TYPE_SYMBOL="SYMBOL",t.default=a;var i=["FACTORIAL","FUNCTION","INVERSE","NEGATE"]},553:(e,t)=>{Object.defineProperty(t,"__esModule",{value:!0});var n=function(){function e(e,t){for(var n=0;n<t.length;n++){var r=t[n];r.enumerable=r.enumerable||!1,r.configurable=!0,"value"in r&&(r.writable=!0),Object.defineProperty(e,r.key,r)}}return function(t,n,r){return n&&e(t.prototype,n),r&&e(t,r),t}}();function r(e,t){if(!(e instanceof t))throw new TypeError("Cannot call a class as a function")}var a=function(){function e(t){var n=arguments.length>1&&void 0!==arguments[1]?arguments[1]:"";r(this,e),this.type=t,this.value=n,this.name=null}return n(e,[{key:"equals",value:function(e){return this.type===e.type&&this.value===e.value}},{key:"toString",value:function(){if(i.indexOf(this.type)>=0)return this.type;var e="function"==typeof this.value?this.name:this.value;return this.type+"["+e+"]"}}]),e}();a.TYPE_LPAREN="LPAREN",a.TYPE_RPAREN="RPAREN",a.TYPE_PLUS="PLUS",a.TYPE_MINUS="MINUS",a.TYPE_TIMES="TIMES",a.TYPE_DIVIDE="DIVIDE",a.TYPE_COMMAND="COMMAND",a.TYPE_SYMBOL="SYMBOL",a.TYPE_WHITESPACE="WHITESPACE",a.TYPE_ABS="ABSOLUTEVAL",a.TYPE_BANG="BANG",a.TYPE_COMMA="COMMA",a.TYPE_POWER="POWER",a.TYPE_NUMBER="NUMBER",a.patterns=new Map([[a.TYPE_LPAREN,/(\(|\[|{|\\left\(|\\left\[)/],[a.TYPE_RPAREN,/(\)|]|}|\\right\)|\\right])/],[a.TYPE_PLUS,/\+/],[a.TYPE_MINUS,/-/],[a.TYPE_TIMES,/\*/],[a.TYPE_DIVIDE,/\//],[a.TYPE_COMMAND,/\\[A-Za-z]+/],[a.TYPE_SYMBOL,/[A-Za-z_][A-Za-z_0-9]*/],[a.TYPE_WHITESPACE,/\s+/],[a.TYPE_ABS,/\|/],[a.TYPE_BANG,/!/],[a.TYPE_COMMA,/,/],[a.TYPE_POWER,/\^/],[a.TYPE_NUMBER,/\d+(\.\d+)?/]]),t.default=a;var i=["TPLUS","TMINUS","TTIMES","TDIVIDE","TWS","TABS","TBANG","TCOMMA","TPOWER"]},315:(e,t,n)=>{t.Z=function(e){var t=arguments.length>1&&void 0!==arguments[1]?arguments[1]:{},n=arguments.length>2&&void 0!==arguments[2]?arguments[2]:{},i=(0,r.default)(e,t,n),u=(0,a.default)(i).simplify(),l=function(){var e=arguments.length>0&&void 0!==arguments[0]?arguments[0]:{};return u.evaluate(e)};return l.ast=u,l.expression=e,l.tokens=i,l};var r=i(n(890)),a=i(n(759));function i(e){return e&&e.__esModule?e:{default:e}}},890:(e,t,n)=>{Object.defineProperty(t,"__esModule",{value:!0});var r=function(e,t){if(Array.isArray(e))return e;if(Symbol.iterator in Object(e))return function(e,t){var n=[],r=!0,a=!1,i=void 0;try{for(var u,l=e[Symbol.iterator]();!(r=(u=l.next()).done)&&(n.push(u.value),!t||n.length!==t);r=!0);}catch(e){a=!0,i=e}finally{try{!r&&l.return&&l.return()}finally{if(a)throw i}}return n}(e,t);throw new TypeError("Invalid attempt to destructure non-iterable instance")},a=function(){function e(e,t){for(var n=0;n<t.length;n++){var r=t[n];r.enumerable=r.enumerable||!1,r.configurable=!0,"value"in r&&(r.writable=!0),Object.defineProperty(e,r.key,r)}}return function(t,n,r){return n&&e(t.prototype,n),r&&e(t,r),t}}();t.default=function(e){var t=arguments.length>1&&void 0!==arguments[1]?arguments[1]:{},n=arguments.length>2&&void 0!==arguments[2]?arguments[2]:c,r=new h(e,t,n);return r.lex(),r.tokens.toString=function(){return r.tokens.map((function(e){return e.toString()})).join(" ")},r.tokens};var i=s(n(553)),u=s(n(204)),l=s(n(406)),o=s(n(933));function s(e){return e&&e.__esModule?e:{default:e}}var f=[i.default.TYPE_POWER,i.default.TYPE_COMMAND],c={latex:!1},h=function(){function e(t,n,r){!function(e,t){if(!(e instanceof t))throw new TypeError("Cannot call a class as a function")}(this,e),this.buffer=t,this.constants=Object.assign({},n,l.default),this.opts=r,this.tokens=[]}return a(e,[{key:"lex",value:function(){this.lexExpression(),this.replaceConstants(),this.replaceCommands()}},{key:"lexExpression",value:function(){for(var e=arguments.length>0&&void 0!==arguments[0]&&arguments[0];this.hasNext();){var t=e?this.nextCharToken():this.next();if(this.tokens.push((0,o.default)(t)),this.opts.latex&&d(t)){var n=1;t.type===i.default.TYPE_COMMAND&&(n=u.default[t.value.substr(1).toLowerCase()]);for(var r=0;r<n;r++)this.lexExpression(!0)}else v(t)&&this.lexExpression(!1);if(e||E(t))return}}},{key:"hasNext",value:function(){return this.buffer.length>0}},{key:"next",value:function(){var e=arguments.length>0&&void 0!==arguments[0]?arguments[0]:void 0;if(this.skipWhitespace(),!this.hasNext())throw"Lexer error: reached end of stream";var t=!0,n=!1,a=void 0;try{for(var u,l=i.default.patterns[Symbol.iterator]();!(t=(u=l.next()).done);t=!0){var o=u.value,s=r(o,2),f=s[0],c=s[1],h=new RegExp(/^/.source+c.source),d=h.exec(this.buffer.substr(0,e));if(d)return this.buffer=this.buffer.substr(d[0].length),new i.default(f,d[0])}}catch(e){n=!0,a=e}finally{try{!t&&l.return&&l.return()}finally{if(n)throw a}}throw"Lexer error: can't match any token"}},{key:"nextCharToken",value:function(){return this.skipWhitespace(),"\\"===this.buffer.charAt(0)?this.next():this.next(1)}},{key:"replaceCommands",value:function(){var e=!0,t=!1,n=void 0;try{for(var r,a=this.tokens[Symbol.iterator]();!(e=(r=a.next()).done);e=!0){var u=r.value;u.type===i.default.TYPE_COMMAND&&(u.value=u.value.substr(1).toLowerCase(),u.name=u.value,u.value=this.constants[u.name])}}catch(e){t=!0,n=e}finally{try{!e&&a.return&&a.return()}finally{if(t)throw n}}}},{key:"replaceConstants",value:function(){var e=!0,t=!1,n=void 0;try{for(var r,a=this.tokens[Symbol.iterator]();!(e=(r=a.next()).done);e=!0){var u=r.value;u.type===i.default.TYPE_SYMBOL&&("function"==typeof this.constants[u.value]?(u.type=i.default.TYPE_FUNCTION,u.name=u.value,u.value=this.constants[u.value]):"number"==typeof this.constants[u.value]&&(u.type=i.default.TYPE_NUMBER,u.value=u.fn=this.constants[u.value]))}}catch(e){t=!0,n=e}finally{try{!e&&a.return&&a.return()}finally{if(t)throw n}}}},{key:"skipWhitespace",value:function(){var e=new RegExp(/^/.source+i.default.patterns.get(i.default.TYPE_WHITESPACE).source);this.buffer=this.buffer.replace(e,"")}}]),e}();function d(e){return-1!==f.indexOf(e.type)}function v(e){return e.type===i.default.TYPE_LPAREN&&"{"===e.value}function E(e){return e.type===i.default.TYPE_RPAREN&&"}"===e.value}},759:(e,t,n)=>{Object.defineProperty(t,"__esModule",{value:!0});var r=function(){function e(e,t){for(var n=0;n<t.length;n++){var r=t[n];r.enumerable=r.enumerable||!1,r.configurable=!0,"value"in r&&(r.writable=!0),Object.defineProperty(e,r.key,r)}}return function(t,n,r){return n&&e(t.prototype,n),r&&e(t,r),t}}();t.default=function(e){return new f(e).parse()};var a=o(n(697)),i=o(n(553)),u=o(n(204)),l=n(406);function o(e){return e&&e.__esModule?e:{default:e}}function s(e,t){if(!(e instanceof t))throw new TypeError("Cannot call a class as a function")}var f=function(){function e(){var t=arguments.length>0&&void 0!==arguments[0]?arguments[0]:[];s(this,e),this.cursor=0,this.tokens=t}return r(e,[{key:"parse",value:function(){var e=this.sum();if(e=e.simplify(),void 0!==this.currentToken)throw console.log(e.printTree()),"Parsing error: Expected end of input, but got "+this.currentToken.type+" "+this.currentToken.value;return e}},{key:"accept",value:function(e){return!(!this.currentToken||this.currentToken.type!==e||(this.cursor++,0))}},{key:"expect",value:function(e){if(!this.accept(e))throw"Expected "+e+" but got "+(this.currentToken?this.currentToken.toString():"end of input.")}},{key:"sum",value:function(){var e=new a.default(a.default.TYPE_SUM);for(e.addChild(this.product());;)if(this.accept(i.default.TYPE_PLUS))e.addChild(this.product());else{if(!this.accept(i.default.TYPE_MINUS))break;e.addChild(new a.default(a.default.TYPE_NEGATE).addChild(this.product()))}return e}},{key:"product",value:function(){var e=new a.default(a.default.TYPE_PRODUCT);for(e.addChild(this.power());;)if(this.accept(i.default.TYPE_TIMES))e.addChild(this.power());else if(this.accept(i.default.TYPE_DIVIDE))e.addChild(new a.default(a.default.TYPE_INVERSE).addChild(this.power()));else if(this.accept(i.default.TYPE_LPAREN))this.cursor--,e.addChild(this.power());else{if(!(this.accept(i.default.TYPE_SYMBOL)||this.accept(i.default.TYPE_NUMBER)||this.accept(i.default.TYPE_FUNCTION)))break;this.cursor--,e.addChild(this.power())}return e}},{key:"power",value:function(){var e=new a.default(a.default.TYPE_POWER);return e.addChild(this.val()),this.accept(i.default.TYPE_POWER)&&e.addChild(this.power()),e}},{key:"val",value:function(){var e={};if(this.accept(i.default.TYPE_SYMBOL))e=new a.default(a.default.TYPE_SYMBOL,this.prevToken.value);else if(this.accept(i.default.TYPE_NUMBER))e=new a.default(a.default.TYPE_NUMBER,parseFloat(this.prevToken.value));else if(this.accept(i.default.TYPE_COMMAND)){var t=this.prevToken;(e=new a.default(a.default.TYPE_FUNCTION,t.value)).name=t.name;for(var n=0;n<u.default[t.name];n++)e.addChild(this.val())}else if(this.accept(i.default.TYPE_FUNCTION))if((e=new a.default(a.default.TYPE_FUNCTION,this.prevToken.value)).name=this.prevToken.name,this.accept(i.default.TYPE_LPAREN)){for(e.addChild(this.sum());this.accept(i.default.TYPE_COMMA);)e.addChild(this.sum());this.expect(i.default.TYPE_RPAREN)}else e.addChild(this.power());else if(this.accept(i.default.TYPE_MINUS))e=new a.default(a.default.TYPE_NEGATE).addChild(this.power());else if(this.accept(i.default.TYPE_LPAREN))e=this.sum(),this.expect(i.default.TYPE_RPAREN);else{if(!this.accept(i.default.TYPE_ABS))throw"Unexpected "+this.currentToken.toString()+" at token "+this.cursor;(e=new a.default(a.default.TYPE_FUNCTION,Math.abs)).addChild(this.sum()),this.expect(i.default.TYPE_ABS)}if(this.accept(i.default.TYPE_BANG)){var r=new a.default(a.default.TYPE_FUNCTION,l.fact);return r.addChild(e),r}return e}},{key:"currentToken",get:function(){return this.tokens[this.cursor]}},{key:"prevToken",get:function(){return this.tokens[this.cursor-1]}}]),e}()},204:(e,t)=>{Object.defineProperty(t,"__esModule",{value:!0}),t.default={frac:2,sqrt:1,sin:1,cos:1,tan:1,asin:1,acos:1,atan:1,sec:1,csc:1,cot:1,asec:1,acsc:1,acot:1}},406:(e,t)=>{Object.defineProperty(t,"__esModule",{value:!0});var n={fact:t.fact=function(e){var t=1;if((e=Math.round(e))<0)throw"Can't factorial a negative.";for(;e>1;e--)t*=e;return t},frac:t.frac=function(e,t){return e/t},logn:t.logn=function(e,t){return Math.log(e)/Math.log(t)},rootn:t.rootn=function(e,t){return Math.pow(e,1/t)},sec:t.sec=function(e){return 1/Math.cos(e)},csc:t.csc=function(e){return 1/Math.sin(e)},cot:t.cot=function(e){return 1/Math.tan(e)}},r=!0,a=!1,i=void 0;try{for(var u,l=Object.getOwnPropertyNames(Math)[Symbol.iterator]();!(r=(u=l.next()).done);r=!0){var o=u.value;n[o]=Math[o]}}catch(e){a=!0,i=e}finally{try{!r&&l.return&&l.return()}finally{if(a)throw i}}t.default=n},933:(e,t,n)=>{Object.defineProperty(t,"__esModule",{value:!0}),t.default=function(e){return e.type===a.default.TYPE_COMMAND&&["\\cdot","\\times"].includes(e.value)?new a.default(a.default.TYPE_TIMES,"*"):e};var r,a=(r=n(553))&&r.__esModule?r:{default:r}}},t={};window.evaluatex=function n(r){if(t[r])return t[r].exports;var a=t[r]={exports:{}};return e[r](a,a.exports,n),a.exports}(315).Z})();