mozjexl/dist/mozjexl.min.js

Javascript Expression Language: Powerful context-based expression parser and evaluator

require=function e(t,r,n){function a(i,s){if(!r[i]){if(!t[i]){var p="function"==typeof require&&require;if(!s&&p)return p(i,!0);if(o)return o(i,!0);var u=new Error("Cannot find module '"+i+"'");throw u.code="MODULE_NOT_FOUND",u}var c=r[i]={exports:{}};t[i][0].call(c.exports,function(e){var r=t[i][1][e];return a(r?r:e)},c,c.exports,e,t,r,n)}return r[i].exports}for(var o="function"==typeof require&&require,i=0;i<n.length;i++)a(n[i]);return a}({1:[function(e,t){function r(e){this._grammar=e}var n=/^-?(?:(?:[0-9]*\.[0-9]+)|[0-9]+)$/,a=/^[a-zA-Z_\$][a-zA-Z0-9_\$]*$/,o=/\\\\/,i=["'(?:(?:\\\\')?[^'])*'",'"(?:(?:\\\\")?[^"])*"',"\\s+","\\btrue\\b","\\bfalse\\b","#.*[\\n\\4]?"],s=["\\b[a-zA-Z_\\$][a-zA-Z0-9_\\$]*\\b","(?:(?:[0-9]*\\.[0-9]+)|[0-9]+)"],p=["binaryOp","unaryOp","openParen","openBracket","question","colon"];r.prototype.getElements=function(e){var t=this._getSplitRegex();return e.split(t).filter(function(e){return e})},r.prototype.getTokens=function(e){for(var t=[],r=!1,n=0;n<e.length;n++)if(this._isWhitespace(e[n]))t.length&&(t[t.length-1].raw+=e[n]);else{if(this._isComment(e[n]))continue;"-"===e[n]&&this._isNegative(t)?r=!0:(r&&(e[n]="-"+e[n],r=!1),t.push(this._createToken(e[n])))}return r&&t.push(this._createToken("-")),t},r.prototype.tokenize=function(e){var t=this.getElements(e);return this.getTokens(t)},r.prototype._createToken=function(e){var t={type:"literal",value:e,raw:e};if('"'==e[0]||"'"==e[0])t.value=this._unquote(e);else if(e.match(n))t.value=parseFloat(e);else if("true"===e||"false"===e)t.value="true"===e;else if(this._grammar[e])t.type=this._grammar[e].type;else{if(!e.match(a))throw new Error("Invalid expression token: "+e);t.type="identifier"}return t},r.prototype._escapeRegExp=function(e){return e=e.replace(/[.*+?^${}()|[\]\\]/g,"\\$&"),e.match(a)&&(e="\\b"+e+"\\b"),e},r.prototype._getSplitRegex=function(){if(!this._splitRegex){var e=Object.keys(this._grammar);e=e.sort(function(e,t){return t.length-e.length}).map(function(e){return this._escapeRegExp(e)},this),this._splitRegex=new RegExp("("+[i.join("|"),e.join("|"),s.join("|")].join("|")+")")}return this._splitRegex},r.prototype._isNegative=function(e){return e.length?p.some(function(t){return t===e[e.length-1].type}):!0};var u=/^\s*$/;r.prototype._isWhitespace=function(e){return u.test(e)},r.prototype._isComment=function(e){return e.startsWith("#")},r.prototype._unquote=function(e){var t=e[0],r=new RegExp("\\\\"+t,"g");return e.substr(1,e.length-2).replace(r,t).replace(o,"\\")},t.exports=r},{}],2:[function(e,t){var r=e("./handlers"),n=function(e,t,r,n){this._grammar=e,this._transforms=t||{},this._context=r||{},this._relContext=n||this._context};n.prototype.eval=function(e){var t=this;return Promise.resolve().then(function(){return r[e.type].call(t,e)})},n.prototype.evalArray=function(e){return Promise.all(e.map(function(e){return this.eval(e)},this))},n.prototype.evalMap=function(e){var t=Object.keys(e),r={},n=t.map(function(t){return this.eval(e[t])},this);return Promise.all(n).then(function(e){return e.forEach(function(e,n){r[t[n]]=e}),r})},n.prototype._filterRelative=function(e,t){if(void 0===e)return void 0;var r=[];return Array.isArray(e)||(e=[e]),e.forEach(function(e){var a=new n(this._grammar,this._transforms,this._context,e);r.push(a.eval(t))},this),Promise.all(r).then(function(t){var r=[];return t.forEach(function(t,n){t&&r.push(e[n])}),r})},n.prototype._filterStatic=function(e,t){return this.eval(t).then(function(t){return"boolean"==typeof t?t?e:void 0:void 0===e?void 0:e[t]})},t.exports=n},{"./handlers":3}],3:[function(e,t,r){r.ArrayLiteral=function(e){return this.evalArray(e.value)},r.BinaryExpression=function(e){var t=this;return Promise.all([this.eval(e.left),this.eval(e.right)]).then(function(r){return t._grammar[e.operator].eval(r[0],r[1])})},r.ConditionalExpression=function(e){var t=this;return this.eval(e.test).then(function(r){return r?e.consequent?t.eval(e.consequent):r:t.eval(e.alternate)})},r.FilterExpression=function(e){var t=this;return this.eval(e.subject).then(function(r){return e.relative?t._filterRelative(r,e.expr):t._filterStatic(r,e.expr)})},r.Identifier=function(e){return e.from?this.eval(e.from).then(function(t){return void 0===t?void 0:(Array.isArray(t)&&(t=t[0]),t[e.value])}):e.relative?this._relContext[e.value]:this._context[e.value]},r.Literal=function(e){return e.value},r.ObjectLiteral=function(e){return this.evalMap(e.value)},r.Transform=function(e){var t=this._transforms[e.name];if(!t)throw new Error("Transform '"+e.name+"' is not defined.");return Promise.all([this.eval(e.subject),this.evalArray(e.args||[])]).then(function(e){return t.apply(null,[e[0]].concat(e[1]))})},r.UnaryExpression=function(e){var t=this;return this.eval(e.right).then(function(r){return t._grammar[e.operator].eval(r)})}},{}],4:[function(e,t,r){r.elements={".":{type:"dot"},"[":{type:"openBracket"},"]":{type:"closeBracket"},"|":{type:"pipe"},"{":{type:"openCurl"},"}":{type:"closeCurl"},":":{type:"colon"},",":{type:"comma"},"(":{type:"openParen"},")":{type:"closeParen"},"?":{type:"question"},"+":{type:"binaryOp",precedence:30,eval:function(e,t){return e+t}},"-":{type:"binaryOp",precedence:30,eval:function(e,t){return e-t}},"*":{type:"binaryOp",precedence:40,eval:function(e,t){return e*t}},"/":{type:"binaryOp",precedence:40,eval:function(e,t){return e/t}},"//":{type:"binaryOp",precedence:40,eval:function(e,t){return Math.floor(e/t)}},"%":{type:"binaryOp",precedence:50,eval:function(e,t){return e%t}},"^":{type:"binaryOp",precedence:50,eval:function(e,t){return Math.pow(e,t)}},"==":{type:"binaryOp",precedence:20,eval:function(e,t){return e==t}},"!=":{type:"binaryOp",precedence:20,eval:function(e,t){return e!=t}},">":{type:"binaryOp",precedence:20,eval:function(e,t){return e>t}},">=":{type:"binaryOp",precedence:20,eval:function(e,t){return e>=t}},"<":{type:"binaryOp",precedence:20,eval:function(e,t){return t>e}},"<=":{type:"binaryOp",precedence:20,eval:function(e,t){return t>=e}},"&&":{type:"binaryOp",precedence:10,eval:function(e,t){return e&&t}},"||":{type:"binaryOp",precedence:10,eval:function(e,t){return e||t}},"in":{type:"binaryOp",precedence:20,eval:function(e,t){return"string"==typeof t?-1!==t.indexOf(e):Array.isArray(t)?t.some(function(t){return t==e}):!1}},"!":{type:"unaryOp",precedence:1/0,eval:function(e){return!e}}}},{}],5:[function(e,t){function r(e,t,r){this._grammar=e,this._state="expectOperand",this._tree=null,this._exprStr=t||"",this._relative=!1,this._stopMap=r||{}}var n=e("./handlers"),a=e("./states").states;r.prototype.addToken=function(e){if("complete"==this._state)throw new Error("Cannot add a new token to a completed Parser");var t=a[this._state],r=this._exprStr;if(this._exprStr+=e.raw,t.subHandler){this._subParser||this._startSubExpression(r);var o=this._subParser.addToken(e);if(o){if(this._endSubExpression(),this._parentStop)return o;this._state=o}}else{if(!t.tokenTypes[e.type]){if(this._stopMap[e.type])return this._stopMap[e.type];throw new Error("Token "+e.raw+" ("+e.type+") unexpected in expression: "+this._exprStr)}var i=t.tokenTypes[e.type],s=n[e.type];i.handler&&(s=i.handler),s&&s.call(this,e),i.toState&&(this._state=i.toState)}return!1},r.prototype.addTokens=function(e){e.forEach(this.addToken,this)},r.prototype.complete=function(){if(this._cursor&&!a[this._state].completable)throw new Error("Unexpected end of expression: "+this._exprStr);return this._subParser&&this._endSubExpression(),this._state="complete",this._cursor?this._tree:null},r.prototype.isRelative=function(){return this._relative},r.prototype._endSubExpression=function(){a[this._state].subHandler.call(this,this._subParser.complete()),this._subParser=null},r.prototype._placeAtCursor=function(e){this._cursor?(this._cursor.right=e,this._setParent(e,this._cursor)):this._tree=e,this._cursor=e},r.prototype._placeBeforeCursor=function(e){this._cursor=this._cursor._parent,this._placeAtCursor(e)},r.prototype._setParent=function(e,t){Object.defineProperty(e,"_parent",{value:t,writable:!0})},r.prototype._startSubExpression=function(e){var t=a[this._state].endStates;t||(this._parentStop=!0,t=this._stopMap),this._subParser=new r(this._grammar,e,t)},t.exports=r},{"./handlers":6,"./states":7}],6:[function(e,t,r){r.argVal=function(e){this._cursor.args.push(e)},r.arrayStart=function(){this._placeAtCursor({type:"ArrayLiteral",value:[]})},r.arrayVal=function(e){e&&this._cursor.value.push(e)},r.binaryOp=function(e){for(var t=this._grammar[e.value].precedence||0,r=this._cursor._parent;r&&r.operator&&this._grammar[r.operator].precedence>=t;)this._cursor=r,r=r._parent;var n={type:"BinaryExpression",operator:e.value,left:this._cursor};this._setParent(this._cursor,n),this._cursor=r,this._placeAtCursor(n)},r.dot=function(){this._nextIdentEncapsulate=this._cursor&&("BinaryExpression"!=this._cursor.type||"BinaryExpression"==this._cursor.type&&this._cursor.right)&&"UnaryExpression"!=this._cursor.type,this._nextIdentRelative=!this._cursor||this._cursor&&!this._nextIdentEncapsulate,this._nextIdentRelative&&(this._relative=!0)},r.filter=function(e){this._placeBeforeCursor({type:"FilterExpression",expr:e,relative:this._subParser.isRelative(),subject:this._cursor})},r.identifier=function(e){var t={type:"Identifier",value:e.value};this._nextIdentEncapsulate?(t.from=this._cursor,this._placeBeforeCursor(t),this._nextIdentEncapsulate=!1):(this._nextIdentRelative&&(t.relative=!0),this._placeAtCursor(t))},r.literal=function(e){this._placeAtCursor({type:"Literal",value:e.value})},r.objKey=function(e){this._curObjKey=e.value},r.objStart=function(){this._placeAtCursor({type:"ObjectLiteral",value:{}})},r.objVal=function(e){this._cursor.value[this._curObjKey]=e},r.subExpression=function(e){this._placeAtCursor(e)},r.ternaryEnd=function(e){this._cursor.alternate=e},r.ternaryMid=function(e){this._cursor.consequent=e},r.ternaryStart=function(){this._tree={type:"ConditionalExpression",test:this._tree},this._cursor=this._tree},r.transform=function(e){this._placeBeforeCursor({type:"Transform",name:e.value,args:[],subject:this._cursor})},r.unaryOp=function(e){this._placeAtCursor({type:"UnaryExpression",operator:e.value})}},{}],7:[function(e,t,r){var n=e("./handlers");r.states={expectOperand:{tokenTypes:{literal:{toState:"expectBinOp"},identifier:{toState:"identifier"},unaryOp:{},openParen:{toState:"subExpression"},openCurl:{toState:"expectObjKey",handler:n.objStart},dot:{toState:"traverse"},openBracket:{toState:"arrayVal",handler:n.arrayStart}}},expectBinOp:{tokenTypes:{binaryOp:{toState:"expectOperand"},pipe:{toState:"expectTransform"},dot:{toState:"traverse"},question:{toState:"ternaryMid",handler:n.ternaryStart}},completable:!0},expectTransform:{tokenTypes:{identifier:{toState:"postTransform",handler:n.transform}}},expectObjKey:{tokenTypes:{identifier:{toState:"expectKeyValSep",handler:n.objKey},closeCurl:{toState:"expectBinOp"}}},expectKeyValSep:{tokenTypes:{colon:{toState:"objVal"}}},postTransform:{tokenTypes:{openParen:{toState:"argVal"},binaryOp:{toState:"expectOperand"},dot:{toState:"traverse"},openBracket:{toState:"filter"},pipe:{toState:"expectTransform"}},completable:!0},postTransformArgs:{tokenTypes:{binaryOp:{toState:"expectOperand"},dot:{toState:"traverse"},openBracket:{toState:"filter"},pipe:{toState:"expectTransform"}},completable:!0},identifier:{tokenTypes:{binaryOp:{toState:"expectOperand"},dot:{toState:"traverse"},openBracket:{toState:"filter"},pipe:{toState:"expectTransform"},question:{toState:"ternaryMid",handler:n.ternaryStart}},completable:!0},traverse:{tokenTypes:{identifier:{toState:"identifier"}}},filter:{subHandler:n.filter,endStates:{closeBracket:"identifier"}},subExpression:{subHandler:n.subExpression,endStates:{closeParen:"expectBinOp"}},argVal:{subHandler:n.argVal,endStates:{comma:"argVal",closeParen:"postTransformArgs"}},objVal:{subHandler:n.objVal,endStates:{comma:"expectObjKey",closeCurl:"expectBinOp"}},arrayVal:{subHandler:n.arrayVal,endStates:{comma:"arrayVal",closeBracket:"expectBinOp"}},ternaryMid:{subHandler:n.ternaryMid,endStates:{colon:"ternaryEnd"}},ternaryEnd:{subHandler:n.ternaryEnd,completable:!0}}},{"./handlers":6}],Jexl:[function(e,t){function r(){this._customGrammar=null,this._lexer=null,this._transforms={}}var n=e("./evaluator/Evaluator"),a=e("./Lexer"),o=e("./parser/Parser"),i=e("./grammar").elements;r.prototype.addBinaryOp=function(e,t,r){this._addGrammarElement(e,{type:"binaryOp",precedence:t,eval:r})},r.prototype.addUnaryOp=function(e,t){this._addGrammarElement(e,{type:"unaryOp",weight:1/0,eval:t})},r.prototype.addTransform=function(e,t){this._transforms[e]=t},r.prototype.addTransforms=function(e){for(var t in e)e.hasOwnProperty(t)&&(this._transforms[t]=e[t])},r.prototype.getTransform=function(e){return this._transforms[e]},r.prototype.eval=function(e,t,r){"function"==typeof t?(r=t,t={}):t||(t={});var n=this._eval(e,t);if(r){var a=!1;return n.then(function(e){a=!0,setTimeout(r.bind(null,null,e),0)})["catch"](function(e){a||setTimeout(r.bind(null,e),0)})}return n},r.prototype.removeOp=function(e){var t=this._getCustomGrammar();!t[e]||"binaryOp"!=t[e].type&&"unaryOp"!=t[e].type||(delete t[e],this._lexer=null)},r.prototype._addGrammarElement=function(e,t){var r=this._getCustomGrammar();r[e]=t,this._lexer=null},r.prototype._eval=function(e,t){var r=this,a=this._getGrammar(),i=new o(a),s=new n(a,this._transforms,t);return Promise.resolve().then(function(){return i.addTokens(r._getLexer().tokenize(e)),s.eval(i.complete())})},r.prototype._getCustomGrammar=function(){if(!this._customGrammar){this._customGrammar={};for(var e in i)i.hasOwnProperty(e)&&(this._customGrammar[e]=i[e])}return this._customGrammar},r.prototype._getGrammar=function(){return this._customGrammar||i},r.prototype._getLexer=function(){return this._lexer||(this._lexer=new a(this._getGrammar())),this._lexer},t.exports=new r,t.exports.Jexl=r},{"./Lexer":1,"./evaluator/Evaluator":2,"./grammar":4,"./parser/Parser":5}]},{},[]);