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bcx-expression-evaluator

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Comparing version 1.1.0 to 1.2.0

9

CHANGELOG.md

@@ -0,1 +1,10 @@

# [1.2.0](https://github.com/buttonwoodcx/bcx-expression-evaluator/compare/v1.1.0...v1.2.0) (2020-05-12)
### Features
* migrate from rollup to ncc ([5c46238](https://github.com/buttonwoodcx/bcx-expression-evaluator/commit/5c4623894c56e856217933234a1af19c724bb96f))
# [1.1.0](https://github.com/buttonwoodcx/bcx-expression-evaluator/compare/v1.0.1...v1.1.0) (2019-10-14)

@@ -2,0 +11,0 @@

2

dist/index.js

@@ -1,1 +0,1 @@

!function(t,e){"object"==typeof exports&&"undefined"!=typeof module?e(exports):"function"==typeof define&&define.amd?define(["exports"],e):e((t=t||self).BcxExpressionEvaluator={})}(this,(function(t){"use strict";function e(t,e){for(var i=0;i<e.length;i++){var n=e[i];n.enumerable=n.enumerable||!1,n.configurable=!0,"value"in n&&(n.writable=!0),Object.defineProperty(t,n.key,n)}}function i(t,i,n){return i&&e(t.prototype,i),n&&e(t,n),t}function n(){return(n=Object.assign||function(t){for(var e=1;e<arguments.length;e++){var i=arguments[e];for(var n in i)Object.prototype.hasOwnProperty.call(i,n)&&(t[n]=i[n])}return t}).apply(this,arguments)}function r(t,e){t.prototype=Object.create(e.prototype),t.prototype.constructor=t,t.__proto__=e}var s=function(){function t(t,e){this.index=t,this.text=e}var e=t.prototype;return e.withOp=function(t){return this.opKey=t,this},e.withGetterSetter=function(t){return this.key=t,this},e.withValue=function(t){return 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n;return(n=t.call(this)||this).object=e,n.key=i,n.isAssignable=!0,n}r(e,t);var i=e.prototype;return i.evaluate=function(t){return function(t,e){if(Array.isArray(t))return t[parseInt(e,10)];if(t)return t[e];if(null==t)return;return t[e]}(this.object.evaluate(t),this.key.evaluate(t))},i.assign=function(t,e){return function(t,e,i){if(Array.isArray(t)){var n=parseInt(e,10);t.length<=n&&(t.length=n+1),t[n]=i}else t[e]=i;return i}(this.object.evaluate(t),this.key.evaluate(t),e)},i.accept=function(t){return t.visitAccessKeyed(this)},e}(wt),At=function(t){function e(e,i,n){var r;return(r=t.call(this)||this).name=e,r.args=i,r.ancestor=n,r}r(e,t);var i=e.prototype;return i.evaluate=function(t,e){var i=Tt(t,this.args),n=xt(this.name,t,this.ancestor),r=_t(n,this.name,e);if(r)return r.apply(n,i)},i.accept=function(t){return t.visitCallScope(this)},e}(wt),Ot=function(t){function e(e,i,n){var r;return(r=t.call(this)||this).object=e,r.name=i,r.args=n,r}r(e,t);var i=e.prototype;return 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n=this.index<this.tokens.length?this.peek.index:this.input.length,r=this.input.substring(t,n);this.error("Conditional expression "+r+" requires all 3 expressions")}var s=this.parseExpression();e=new yt(e,i,s)}return e},e.parseLogicalOr=function(){for(var t=this.parseLogicalAnd();this.optional("||");)t=new Et("||",t,this.parseLogicalAnd());return t},e.parseLogicalAnd=function(){for(var t=this.parseEquality();this.optional("&&");)t=new Et("&&",t,this.parseEquality());return t},e.parseEquality=function(){for(var t=this.parseRelational();;)if(this.optional("=="))t=new Et("==",t,this.parseRelational());else if(this.optional("!="))t=new Et("!=",t,this.parseRelational());else if(this.optional("==="))t=new Et("===",t,this.parseRelational());else{if(!this.optional("!=="))return t;t=new Et("!==",t,this.parseRelational())}},e.parseRelational=function(){for(var t=this.parseAdditive();;)if(this.optional("<"))t=new Et("<",t,this.parseAdditive());else if(this.optional(">"))t=new Et(">",t,this.parseAdditive());else if(this.optional("<="))t=new Et("<=",t,this.parseAdditive());else{if(!this.optional(">="))return t;t=new Et(">=",t,this.parseAdditive())}},e.parseAdditive=function(){for(var t=this.parseMultiplicative();;)if(this.optional("+"))t=new Et("+",t,this.parseMultiplicative());else{if(!this.optional("-"))return t;t=new Et("-",t,this.parseMultiplicative())}},e.parseMultiplicative=function(){for(var t=this.parsePrefix();;)if(this.optional("*"))t=new Et("*",t,this.parsePrefix());else if(this.optional("%"))t=new Et("%",t,this.parsePrefix());else{if(!this.optional("/"))return t;t=new Et("/",t,this.parsePrefix())}},e.parsePrefix=function(){return this.optional("+")?this.parsePrefix():this.optional("-")?new Et("-",new Mt(0),this.parsePrefix()):this.optional("!")?new jt("!",this.parsePrefix()):this.parseAccessOrCallMember()},e.parseAccessOrCallMember=function(){for(var t=this.parsePrimary();;)if(this.optional(".")){var e=this.peek.text;if(this.advance(),this.optional("(")){var i=this.parseExpressionList(")");this.expect(")"),t=t instanceof Ct?new At(e,i,t.ancestor):new Ot(t,e,i)}else t=t instanceof Ct?new bt(e,t.ancestor):new St(t,e)}else if(this.optional("[")){var n=this.parseExpression();this.expect("]"),t=new mt(t,n)}else{if(!this.optional("("))return t;var r=this.parseExpressionList(")");this.expect(")"),t=new It(t,r)}},e.parseStringInterpolation=function(t){for(var e=[];t?this.peek!==Ut:this.peek!==Ut&&"`"!==this.peek.text;)if(this.optional("${")){var i=this.parseExpression();this.expect("}"),e.push(i)}else if("string"==typeof this.peek.value){var n=this.peek.value;this.advance(),e.push(new Lt(n))}return new $t(e)},e.parsePrimary=function(){if(this.optional("(")){var t=this.parseExpression();return this.expect(")"),t}if(this.optional("`")){var e=this.parseStringInterpolation();return this.expect("`"),e}if(this.optional("null"))return new Mt(null);if(this.optional("undefined"))return new Mt(void 0);if(this.optional("true"))return new Mt(!0);if(this.optional("false"))return new Mt(!1);if(this.optional("[")){var i=this.parseExpressionList("]");return this.expect("]"),new Pt(i)}if("{"===this.peek.text)return this.parseObject();if(null!==this.peek.key&&void 0!==this.peek.key)return this.parseAccessOrCallScope();if(null!==this.peek.value&&void 0!==this.peek.value){var n=this.peek.value;return this.advance(),n instanceof String||"string"==typeof n?new Lt(n):new Mt(n)}if(this.index>=this.tokens.length)throw new Error("Unexpected end of expression: "+this.input);this.error("Unexpected token "+this.peek.text)},e.parseAccessOrCallScope=function(){var t=this.peek.key;if(this.advance(),"$this"===t)return new Ct(0);for(var e=0;"$parent"===t;)if(e++,this.optional("."))t=this.peek.key,this.advance();else{if(this.peek===Ut||"("===this.peek.text||")"===this.peek.text||"["===this.peek.text||"}"===this.peek.text||","===this.peek.text)return new Ct(e);this.error("Unexpected token "+this.peek.text)}if(this.optional("(")){var i=this.parseExpressionList(")");return this.expect(")"),new At(t,i,e)}return new bt(t,e)},e.parseObject=function(){var t=[],e=[];if(this.expect("{"),"}"!==this.peek.text)do{var i=this.peek,n=i.value;t.push("string"==typeof n?n:i.text),this.advance(),!i.key||","!==this.peek.text&&"}"!==this.peek.text?(this.expect(":"),e.push(this.parseExpression())):(--this.index,e.push(this.parseAccessOrCallScope()))}while(this.optional(","));return this.expect("}"),new Rt(t,e)},e.parseExpressionList=function(t){var e=[];if(this.peek.text!==t)do{e.push(this.parseExpression())}while(this.optional(","));return e},e.optional=function(t){return this.peek.text===t&&(this.advance(),!0)},e.expect=function(t){this.peek.text===t?this.advance():this.error("Missing expected "+t)},e.advance=function(){this.index++},e.error=function(t){var e=this.index<this.tokens.length?"at column "+(this.tokens[this.index].index+1)+" in":"at the end of the expression";throw new Error("Parser Error: "+t+" "+e+" ["+this.input+"]")},i(t,[{key:"peek",get:function(){return this.index<this.tokens.length?this.tokens[this.index]:Ut}}]),t}(),Bt=new Nt;function Ft(t,e,i,n){return Bt.parse(t,n).evaluateWith(e,i)}t.Parser=Nt,t.createOverrideContext=dt,t.createSimpleScope=gt,t.evaluate=Ft,t.evaluateStringInterpolation=function(t,e,i,r){return void 0===r&&(r={}),Ft(t,e,i,n({},r,{stringInterpolationMode:!0}))},Object.defineProperty(t,"__esModule",{value:!0})}));
module.exports=function(t,e){"use strict";var i={};function __webpack_require__(e){if(i[e]){return i[e].exports}var n=i[e]={i:e,l:false,exports:{}};t[e].call(n.exports,n,n.exports,__webpack_require__);n.l=true;return n.exports}__webpack_require__.ab=__dirname+"/";function startup(){return __webpack_require__(874)}e(__webpack_require__);return startup()}({874:function(t,e,i){"use strict";i.r(e);class Token{constructor(t,e){this.index=t;this.text=e}withOp(t){this.opKey=t;return this}withGetterSetter(t){this.key=t;return this}withValue(t){this.value=t;return this}toString(){return`Token(${this.text})`}}class Lexer{lex(t,e){let i=new Scanner(t,e);let n=[];let s=i.scanToken();while(s){n.push(s);s=i.scanToken()}return n}}const n=0;const s=1;const r=2;const a=3;class Scanner{constructor(t,e={}){this.input=t;this.length=t.length;this.peek=0;this.index=-1;this.stringInterpolationMode=e.stringInterpolationMode||false;const i=this.stringInterpolationMode?r:n;this.contextStack=[i];this.advance()}get context(){return this.contextStack[this.contextStack.length-1]}get isRootLevelOfStringInterpolationMode(){return this.stringInterpolationMode&&this.contextStack.length===1}scanToken(){let t=this.index;if(this.context!==r){while(this.peek<=d){if(++this.index>=this.length){this.peek=h;return null}this.peek=this.input.charCodeAt(this.index)}if(isIdentifierStart(this.peek)){return this.scanIdentifier()}if(isDigit(this.peek)){return this.scanNumber(this.index)}switch(this.peek){case I:this.advance();return isDigit(this.peek)?this.scanNumber(t):new Token(t,".");case et:this.contextStack.push(s);return this.scanCharacter(t,String.fromCharCode(this.peek));case nt:this.contextStack.pop();return this.scanCharacter(t,String.fromCharCode(this.peek));case S:case C:case Z:case Y:case A:case m:case M:return this.scanCharacter(t,String.fromCharCode(this.peek));case y:case v:return this.scanString();case _:case L:case b:case j:case g:case J:case F:return this.scanOperator(t,String.fromCharCode(this.peek));case O:case q:case x:case P:return this.scanComplexOperator(t,P,String.fromCharCode(this.peek),"=");case k:return this.scanComplexOperator(t,k,"&","&");case it:return this.scanComplexOperator(t,it,"|","|");case E:this.contextStack.push(r);return this.scanCharacter(t,String.fromCharCode(this.peek));case st:while(isWhitespace(this.peek)){this.advance()}return this.scanToken()}let e=String.fromCharCode(this.peek);this.error(`Unexpected character [${e}]`);return null}else{if(this.peek===E){if(this.isRootLevelOfStringInterpolationMode){return this.scanString()}else{this.contextStack.pop();return this.scanCharacter(t,String.fromCharCode(this.peek))}}else if(this.isStartOfInterpolation()){const t=this.scanStartOfInterpolation();this.contextStack.push(a);return t}else if(this.peek){return this.scanString()}}}scanCharacter(t,e){assert(this.peek===e.charCodeAt(0));this.advance();return new Token(t,e)}scanOperator(t,e){assert(this.peek===e.charCodeAt(0));assert(o.indexOf(e)!==-1);this.advance();return new Token(t,e).withOp(e)}scanComplexOperator(t,e,i,n){assert(this.peek===i.charCodeAt(0));this.advance();let s=i;if(this.peek===e){this.advance();s+=n}if(this.peek===e){this.advance();s+=n}assert(o.indexOf(s)!==-1);return new Token(t,s).withOp(s)}scanIdentifier(){assert(isIdentifierStart(this.peek));let t=this.index;this.advance();while(isIdentifierPart(this.peek)){this.advance()}let e=this.input.substring(t,this.index);let i=new Token(t,e);if(o.indexOf(e)!==-1){i.withOp(e)}else{i.withGetterSetter(e)}return i}scanNumber(t){assert(isDigit(this.peek));let e=this.index===t;this.advance();while(true){if(!isDigit(this.peek)){if(this.peek===I){e=false}else if(isExponentStart(this.peek)){this.advance();if(isExponentSign(this.peek)){this.advance()}if(!isDigit(this.peek)){this.error("Invalid exponent",-1)}e=false}else{break}}this.advance()}let i=this.input.substring(t,this.index);let n=e?parseInt(i,10):parseFloat(i);return new Token(t,i).withValue(n)}scanString(){if(this.context!==r){assert(this.peek===y||this.peek===v)}let t=this.index;let e;if(this.context!==r){e=this.peek;this.advance()}else{e=this.isRootLevelOfStringInterpolationMode?h:E}let i;let n=this.index;while(this.peek!==e&&!this.isStartOfInterpolation()){if(this.peek===z){if(!i){i=[]}i.push(this.input.substring(n,this.index));this.advance();let t;if(this.peek===N){let e=this.input.substring(this.index+1,this.index+5);if(!/[A-Z0-9]{4}/.test(e)){this.error(`Invalid unicode escape [\\u${e}]`)}t=parseInt(e,16);for(let t=0;t<5;++t){this.advance()}}else{t=lexer_unescape(this.peek);this.advance()}i.push(String.fromCharCode(t));n=this.index}else if(e!==h&&this.peek===h){this.error("Unterminated quote")}else{this.advance()}}let s=this.input.substring(n,this.index);if(this.context!==r){this.advance()}let a=this.input.substring(t,this.index);let o=s;if(i!==null&&i!==undefined){i.push(s);o=i.join("")}return new Token(t,a).withValue(o)}scanStartOfInterpolation(){assert(this.isStartOfInterpolation());let t=this.index;this.advance();this.advance();return new Token(t,"${")}advance(){if(++this.index>=this.length){this.peek=h}else{this.peek=this.input.charCodeAt(this.index)}}error(t,e=0){let i=this.index+e;throw new Error(`Lexer Error: ${t} at column ${i} in expression [${this.input}]`)}isStartOfInterpolation(){if(this.context===r){return this.peek===w&&this.input.charCodeAt(this.index+1)===et}}}const o=["undefined","null","true","false","+","-","*","/","%","^","=","==","===","!=","!==","<",">","<=",">=","&&","||","&","|","!","?"];const h=0;const c=9;const p=10;const l=11;const u=12;const f=13;const d=32;const x=33;const v=34;const w=36;const g=37;const k=38;const y=39;const S=40;const C=41;const b=42;const _=43;const A=44;const L=45;const I=46;const j=47;const m=58;const M=59;const O=60;const P=61;const q=62;const F=63;const U=48;const W=57;const V=65;const B=69;const K=90;const Z=91;const z=92;const Y=93;const J=94;const D=95;const E=96;const H=97;const G=101;const X=102;const Q=110;const T=114;const $=116;const N=117;const R=118;const tt=122;const et=123;const it=124;const nt=125;const st=160;function isWhitespace(t){return t>=c&&t<=d||t===st}function isIdentifierStart(t){return H<=t&&t<=tt||V<=t&&t<=K||t===D||t===w}function isIdentifierPart(t){return H<=t&&t<=tt||V<=t&&t<=K||U<=t&&t<=W||t===D||t===w}function isDigit(t){return U<=t&&t<=W}function isExponentStart(t){return t===G||t===B}function isExponentSign(t){return t===L||t===_}function lexer_unescape(t){switch(t){case Q:return p;case X:return u;case T:return f;case $:return c;case R:return l;default:return t}}function assert(t,e){if(!t){throw e||"Assertion failed"}}class Unparser{constructor(t){this.buffer=t}static unparse(t){let e=[];let i=new Unparser(e);t.accept(i);return e.join("")}write(t){this.buffer.push(t)}writeArgs(t){this.write("(");for(let e=0,i=t.length;e<i;++e){if(e!==0){this.write(",")}t[e].accept(this)}this.write(")")}visitAssign(t){t.target.accept(this);this.write("=");t.value.accept(this)}visitConditional(t){t.condition.accept(this);this.write("?");t.yes.accept(this);this.write(":");t.no.accept(this)}visitAccessThis(t){if(t.ancestor===0){this.write("$this");return}this.write("$parent");let e=t.ancestor-1;while(e--){this.write(".$parent")}}visitAccessScope(t){let e=t.ancestor;while(e--){this.write("$parent.")}this.write(t.name)}visitAccessMember(t){t.object.accept(this);this.write(`.${t.name}`)}visitAccessKeyed(t){t.object.accept(this);this.write("[");t.key.accept(this);this.write("]")}visitCallScope(t){let e=t.ancestor;while(e--){this.write("$parent.")}this.write(t.name);this.writeArgs(t.args)}visitCallFunction(t){t.func.accept(this);this.writeArgs(t.args)}visitCallMember(t){t.object.accept(this);this.write(`.${t.name}`);this.writeArgs(t.args)}visitPrefix(t){this.write(`(${t.operation}`);t.expression.accept(this);this.write(")")}visitBinary(t){t.left.accept(this);this.write(t.operation);t.right.accept(this)}visitLiteralPrimitive(t){this.write(`${t.value}`)}visitLiteralArray(t){let e=t.elements;this.write("[");for(let t=0,i=e.length;t<i;++t){if(t!==0){this.write(",")}e[t].accept(this)}this.write("]")}visitLiteralObject(t){let e=t.keys;let i=t.values;this.write("{");for(let t=0,n=e.length;t<n;++t){if(t!==0){this.write(",")}this.write(`'${e[t]}':`);i[t].accept(this)}this.write("}")}visitLiteralString(t){let e=t.value.replace(/'/g,"'");this.write(`'${e}'`)}visitStringInterpolation(t){let e=t.parts;this.write("(''");for(let t=0,i=e.length;t<i;++t){let i=e[t];this.write("+(");e[t].accept(this);this.write(")")}this.write(")")}}function has(t,e){const i=typeof t;return(i==="object"||i==="function")&&e in t}function createOverrideContext(t,e){return{bindingContext:t,parentOverrideContext:e||null}}function getContextFor(t,e,i){let n=e.overrideContext;if(i){while(i&&n){i--;n=n.parentOverrideContext}if(i||!n){return undefined}return has(n,t)?n:n.bindingContext}while(n&&!has(n,t)&&!(n.bindingContext&&has(n.bindingContext,t))){n=n.parentOverrideContext}if(n){return has(n,t)?n:n.bindingContext}return e.bindingContext||e.overrideContext}function createSimpleScope(t,e){if(e){return{bindingContext:t,overrideContext:createOverrideContext(t,createOverrideContext(e))}}return{bindingContext:t,overrideContext:createOverrideContext(t)}}class ast_Expression{constructor(){this.isAssignable=false}evaluate(t,e){throw new Error(`Binding expression "${this}" cannot be evaluated.`)}evaluateWith(t,e,i){return this.evaluate(createSimpleScope(t,e),i)}assign(t,e){throw new Error(`Binding expression "${this}" cannot be assigned to.`)}toString(){return typeof FEATURE_NO_UNPARSER==="undefined"?Unparser.unparse(this):super.toString()}}class Assign extends ast_Expression{constructor(t,e){super();this.target=t;this.value=e;this.isAssignable=true}evaluate(t){return this.target.assign(t,this.value.evaluate(t))}accept(t){t.visitAssign(this)}assign(t,e){this.value.assign(t,e);this.target.assign(t,e)}}class Conditional extends ast_Expression{constructor(t,e,i){super();this.condition=t;this.yes=e;this.no=i}evaluate(t){return!!this.condition.evaluate(t)?this.yes.evaluate(t):this.no.evaluate(t)}accept(t){return t.visitConditional(this)}}class AccessThis extends ast_Expression{constructor(t){super();this.ancestor=t}evaluate(t){let e=t.overrideContext;let i=this.ancestor;while(i--&&e){e=e.parentOverrideContext}return i<1&&e?e.bindingContext:undefined}accept(t){return t.visitAccessThis(this)}}class ast_AccessScope extends ast_Expression{constructor(t,e){super();this.name=t;this.ancestor=e;this.isAssignable=true}evaluate(t){let e=getContextFor(this.name,t,this.ancestor);return e[this.name]}assign(t,e){let i=getContextFor(this.name,t,this.ancestor);return i?i[this.name]=e:undefined}accept(t){return t.visitAccessScope(this)}}class AccessMember extends ast_Expression{constructor(t,e){super();this.object=t;this.name=e;this.isAssignable=true}evaluate(t){let e=this.object.evaluate(t);return e===null||e===undefined?e:e[this.name]}assign(t,e){let i=this.object.evaluate(t);if(i===null||i===undefined){i={};this.object.assign(t,i)}i[this.name]=e;return e}accept(t){return t.visitAccessMember(this)}}class AccessKeyed extends ast_Expression{constructor(t,e){super();this.object=t;this.key=e;this.isAssignable=true}evaluate(t){let e=this.object.evaluate(t);let i=this.key.evaluate(t);return getKeyed(e,i)}assign(t,e){let i=this.object.evaluate(t);let n=this.key.evaluate(t);return setKeyed(i,n,e)}accept(t){return t.visitAccessKeyed(this)}}class ast_CallScope extends ast_Expression{constructor(t,e,i){super();this.name=t;this.args=e;this.ancestor=i}evaluate(t,e){let i=evalList(t,this.args);let n=getContextFor(this.name,t,this.ancestor);let s=getFunction(n,this.name,e);if(s){return s.apply(n,i)}return undefined}accept(t){return t.visitCallScope(this)}}class CallMember extends ast_Expression{constructor(t,e,i){super();this.object=t;this.name=e;this.args=i}evaluate(t,e){let i=this.object.evaluate(t);let n=evalList(t,this.args);let s=getFunction(i,this.name,e);if(s){return s.apply(i,n)}return undefined}accept(t){return t.visitCallMember(this)}}class CallFunction extends ast_Expression{constructor(t,e){super();this.func=t;this.args=e}evaluate(t,e){let i=this.func.evaluate(t);if(typeof i==="function"){return i.apply(null,evalList(t,this.args))}if(!e&&(i===null||i===undefined)){return undefined}throw new Error(`${this.func} is not a function`)}accept(t){return t.visitCallFunction(this)}}class Binary extends ast_Expression{constructor(t,e,i){super();this.operation=t;this.left=e;this.right=i}evaluate(t){let e=this.left.evaluate(t);switch(this.operation){case"&&":return e&&this.right.evaluate(t);case"||":return e||this.right.evaluate(t)}let i=this.right.evaluate(t);switch(this.operation){case"==":return e==i;case"===":return e===i;case"!=":return e!=i;case"!==":return e!==i}if(e===null||i===null||e===undefined||i===undefined){switch(this.operation){case"+":if(e!==null&&e!==undefined)return e;if(i!==null&&i!==undefined)return i;return 0;case"-":if(e!==null&&e!==undefined)return e;if(i!==null&&i!==undefined)return 0-i;return 0}}switch(this.operation){case"+":return autoConvertAdd(e,i);case"-":return e-i;case"*":return e*i;case"/":return e/i;case"%":return e%i;case"<":return e<i;case">":return e>i;case"<=":return e<=i;case">=":return e>=i;case"^":return e^i;case"&":return e&i;case"|":return e|i;case"<<":return e<<i;case">>":return e>>i;case">>>":return e>>>i}throw new Error(`Internal error [${this.operation}] not handled`)}accept(t){return t.visitBinary(this)}}class PrefixNot extends ast_Expression{constructor(t,e){super();this.operation=t;this.expression=e}evaluate(t){return!this.expression.evaluate(t)}accept(t){return t.visitPrefix(this)}}class LiteralPrimitive extends ast_Expression{constructor(t){super();this.value=t}evaluate(t){return this.value}accept(t){return t.visitLiteralPrimitive(this)}}class LiteralString extends ast_Expression{constructor(t){super();this.value=t}evaluate(t){return this.value}accept(t){return t.visitLiteralString(this)}}class LiteralArray extends ast_Expression{constructor(t){super();this.elements=t}evaluate(t){let e=this.elements;let i=[];for(let n=0,s=e.length;n<s;++n){i[n]=e[n].evaluate(t)}return i}accept(t){return t.visitLiteralArray(this)}}class LiteralObject extends ast_Expression{constructor(t,e){super();this.keys=t;this.values=e}evaluate(t){let e={};let i=this.keys;let n=this.values;for(let s=0,r=i.length;s<r;++s){e[i[s]]=n[s].evaluate(t)}return e}accept(t){return t.visitLiteralObject(this)}}class StringInterpolation extends ast_Expression{constructor(t){super();this.parts=t}evaluate(t){let e=this.parts;let i="";for(let n=0,s=e.length;n<s;++n){i+=e[n].evaluate(t)}return i}accept(t){return t.visitStringInterpolation(this)}}function evalList(t,e){const i=e.length;const n=[];for(let s=0;s<i;s++){n[s]=e[s].evaluate(t)}return n}function autoConvertAdd(t,e){if(t!==null&&e!==null){if(typeof t==="string"&&typeof e!=="string"){return t+e.toString()}if(typeof t!=="string"&&typeof e==="string"){return t.toString()+e}return t+e}if(t!==null){return t}if(e!==null){return e}return 0}function getFunction(t,e,i){let n=t===null||t===undefined?null:t[e];if(typeof n==="function"){return n}if(!i&&(n===null||n===undefined)){return null}throw new Error(`${e} is not a function`)}function getKeyed(t,e){if(Array.isArray(t)){return t[parseInt(e,10)]}else if(t){return t[e]}else if(t===null||t===undefined){return undefined}return t[e]}function setKeyed(t,e,i){if(Array.isArray(t)){let n=parseInt(e,10);if(t.length<=n){t.length=n+1}t[n]=i}else{t[e]=i}return i}let rt=new Token(-1,null);class parser_Parser{constructor(){this.cache={};this.lexer=new Lexer}parse(t,e={}){t=t||"";const i=t+":"+JSON.stringify(e);if(!this.cache[i]){const n=new parser_ParserImplementation(this.lexer,t,e);this.cache[i]=n.parseExpression();let s="";for(let t=0,e=n.tokens.length;t<e;++t){s+=n.tokens[t].text}this.cache[i].toString=function(){return s}}return this.cache[i]}}class parser_ParserImplementation{constructor(t,e,i={}){this.rejectAssignment=i.rejectAssignment||false;this.stringInterpolationMode=i.stringInterpolationMode||false;this.index=0;this.input=e;this.tokens=t.lex(e,{stringInterpolationMode:this.stringInterpolationMode})}get peek(){return this.index<this.tokens.length?this.tokens[this.index]:rt}parseExpression(){if(this.index===0&&this.stringInterpolationMode){return this.parseStringInterpolation(true)}let t=this.peek.index;let e=this.parseConditional();while(this.peek.text==="="){if(this.rejectAssignment){this.error("assignment is not allowed")}if(!e.isAssignable){let e=this.index<this.tokens.length?this.peek.index:this.input.length;let i=this.input.substring(t,e);this.error(`Expression ${i} is not assignable`)}this.expect("=");e=new Assign(e,this.parseConditional())}return e}parseConditional(){let t=this.peek.index;let e=this.parseLogicalOr();if(this.optional("?")){let i=this.parseExpression();if(!this.optional(":")){let e=this.index<this.tokens.length?this.peek.index:this.input.length;let i=this.input.substring(t,e);this.error(`Conditional expression ${i} requires all 3 expressions`)}let n=this.parseExpression();e=new Conditional(e,i,n)}return e}parseLogicalOr(){let t=this.parseLogicalAnd();while(this.optional("||")){t=new Binary("||",t,this.parseLogicalAnd())}return t}parseLogicalAnd(){let t=this.parseEquality();while(this.optional("&&")){t=new Binary("&&",t,this.parseEquality())}return t}parseEquality(){let t=this.parseRelational();while(true){if(this.optional("==")){t=new Binary("==",t,this.parseRelational())}else if(this.optional("!=")){t=new Binary("!=",t,this.parseRelational())}else if(this.optional("===")){t=new Binary("===",t,this.parseRelational())}else if(this.optional("!==")){t=new Binary("!==",t,this.parseRelational())}else{return t}}}parseRelational(){let t=this.parseAdditive();while(true){if(this.optional("<")){t=new Binary("<",t,this.parseAdditive())}else if(this.optional(">")){t=new Binary(">",t,this.parseAdditive())}else if(this.optional("<=")){t=new Binary("<=",t,this.parseAdditive())}else if(this.optional(">=")){t=new Binary(">=",t,this.parseAdditive())}else{return t}}}parseAdditive(){let t=this.parseMultiplicative();while(true){if(this.optional("+")){t=new Binary("+",t,this.parseMultiplicative())}else if(this.optional("-")){t=new Binary("-",t,this.parseMultiplicative())}else{return t}}}parseMultiplicative(){let t=this.parsePrefix();while(true){if(this.optional("*")){t=new Binary("*",t,this.parsePrefix())}else if(this.optional("%")){t=new Binary("%",t,this.parsePrefix())}else if(this.optional("/")){t=new Binary("/",t,this.parsePrefix())}else{return t}}}parsePrefix(){if(this.optional("+")){return this.parsePrefix()}else if(this.optional("-")){return new Binary("-",new LiteralPrimitive(0),this.parsePrefix())}else if(this.optional("!")){return new PrefixNot("!",this.parsePrefix())}return this.parseAccessOrCallMember()}parseAccessOrCallMember(){let t=this.parsePrimary();while(true){if(this.optional(".")){let e=this.peek.text;this.advance();if(this.optional("(")){let i=this.parseExpressionList(")");this.expect(")");if(t instanceof AccessThis){t=new ast_CallScope(e,i,t.ancestor)}else{t=new CallMember(t,e,i)}}else{if(t instanceof AccessThis){t=new ast_AccessScope(e,t.ancestor)}else{t=new AccessMember(t,e)}}}else if(this.optional("[")){let e=this.parseExpression();this.expect("]");t=new AccessKeyed(t,e)}else if(this.optional("(")){let e=this.parseExpressionList(")");this.expect(")");t=new CallFunction(t,e)}else{return t}}}parseStringInterpolation(t){let e=[];while(t?this.peek!==rt:this.peek!==rt&&this.peek.text!=="`"){if(this.optional("${")){let t=this.parseExpression();this.expect("}");e.push(t)}else if(typeof this.peek.value==="string"){let t=this.peek.value;this.advance();e.push(new LiteralString(t))}}return new StringInterpolation(e)}parsePrimary(){if(this.optional("(")){let t=this.parseExpression();this.expect(")");return t}else if(this.optional("`")){let t=this.parseStringInterpolation();this.expect("`");return t}else if(this.optional("null")){return new LiteralPrimitive(null)}else if(this.optional("undefined")){return new LiteralPrimitive(undefined)}else if(this.optional("true")){return new LiteralPrimitive(true)}else if(this.optional("false")){return new LiteralPrimitive(false)}else if(this.optional("[")){let t=this.parseExpressionList("]");this.expect("]");return new LiteralArray(t)}else if(this.peek.text==="{"){return this.parseObject()}else if(this.peek.key!==null&&this.peek.key!==undefined){return this.parseAccessOrCallScope()}else if(this.peek.value!==null&&this.peek.value!==undefined){let t=this.peek.value;this.advance();return t instanceof String||typeof t==="string"?new LiteralString(t):new LiteralPrimitive(t)}else if(this.index>=this.tokens.length){throw new Error(`Unexpected end of expression: ${this.input}`)}else{this.error(`Unexpected token ${this.peek.text}`)}}parseAccessOrCallScope(){let t=this.peek.key;this.advance();if(t==="$this"){return new AccessThis(0)}let e=0;while(t==="$parent"){e++;if(this.optional(".")){t=this.peek.key;this.advance()}else if(this.peek===rt||this.peek.text==="("||this.peek.text===")"||this.peek.text==="["||this.peek.text==="}"||this.peek.text===","){return new AccessThis(e)}else{this.error(`Unexpected token ${this.peek.text}`)}}if(this.optional("(")){let i=this.parseExpressionList(")");this.expect(")");return new ast_CallScope(t,i,e)}return new ast_AccessScope(t,e)}parseObject(){let t=[];let e=[];this.expect("{");if(this.peek.text!=="}"){do{let i=this.peek;let n=i.value;t.push(typeof n==="string"?n:i.text);this.advance();if(i.key&&(this.peek.text===","||this.peek.text==="}")){--this.index;e.push(this.parseAccessOrCallScope())}else{this.expect(":");e.push(this.parseExpression())}}while(this.optional(","))}this.expect("}");return new LiteralObject(t,e)}parseExpressionList(t){let e=[];if(this.peek.text!==t){do{e.push(this.parseExpression())}while(this.optional(","))}return e}optional(t){if(this.peek.text===t){this.advance();return true}return false}expect(t){if(this.peek.text===t){this.advance()}else{this.error(`Missing expected ${t}`)}}advance(){this.index++}error(t){let e=this.index<this.tokens.length?`at column ${this.tokens[this.index].index+1} in`:"at the end of the expression";throw new Error(`Parser Error: ${t} ${e} [${this.input}]`)}}i.d(e,"Parser",function(){return parser_Parser});i.d(e,"createOverrideContext",function(){return createOverrideContext});i.d(e,"createSimpleScope",function(){return createSimpleScope});i.d(e,"evaluate",function(){return evaluate});i.d(e,"evaluateStringInterpolation",function(){return evaluateStringInterpolation});const at=new parser_Parser;function evaluate(t,e,i,n){const s=at.parse(t,n);return s.evaluateWith(e,i)}function evaluateStringInterpolation(t,e,i,n={}){return evaluate(t,e,i,{...n,stringInterpolationMode:true})}}},function(t){"use strict";!function(){t.r=function(t){if(typeof Symbol!=="undefined"&&Symbol.toStringTag){Object.defineProperty(t,Symbol.toStringTag,{value:"Module"})}Object.defineProperty(t,"__esModule",{value:true})}}();!function(){var e=Object.prototype.hasOwnProperty;t.d=function(t,i,n){if(!e.call(t,i)){Object.defineProperty(t,i,{enumerable:true,get:n})}}}()});

24

package.json
{
"name": "bcx-expression-evaluator",
"version": "1.1.0",
"version": "1.2.0",
"description": "Safely evaluate a JavaScript like expression in given context.",

@@ -21,15 +21,13 @@ "keywords": [

"devDependencies": {
"@babel/core": "^7.6.4",
"@babel/preset-env": "^7.6.3",
"@babel/register": "^7.6.2",
"babel-eslint": "^10.0.3",
"eslint": "^6.5.1",
"rollup": "^1.23.1",
"rollup-plugin-babel": "^4.3.3",
"rollup-plugin-terser": "^5.1.2",
"standard-changelog": "^2.0.15",
"tape": "^4.11.0"
"@babel/core": "^7.9.6",
"@babel/preset-env": "^7.9.6",
"@babel/register": "^7.9.0",
"@zeit/ncc": "^0.22.1",
"babel-eslint": "^10.1.0",
"eslint": "^7.0.0",
"standard-changelog": "^2.0.24",
"tape": "^5.0.0"
},
"scripts": {
"build": "env BABEL_ENV=development rollup -c",
"build": "ncc build src/index.js -m",
"lint": "eslint src",

@@ -41,3 +39,3 @@ "prepare": "npm run build",

"pretest": "npm run lint",
"test": "env BABEL_ENV=test tape -r @babel/register 'test/**/*.spec.js'"
"test": "tape -r @babel/register 'test/**/*.spec.js'"
},

@@ -44,0 +42,0 @@ "main": "dist/index.js",

4

README.md

@@ -1,2 +0,2 @@

# bcx-expression-evaluator [![Build Status](https://travis-ci.org/buttonwoodcx/bcx-expression-evaluator.svg?branch=master)](https://travis-ci.org/buttonwoodcx/bcx-expression-evaluator)
# bcx-expression-evaluator ![CI](https://github.com/buttonwoodcx/bcx-expression-evaluator/workflows/CI/badge.svg)

@@ -11,3 +11,3 @@ Safely evaluate a JavaScript-like expression in given context.

npm install --save bcx-expression-evaluator
npm install bcx-expression-evaluator

@@ -14,0 +14,0 @@ ## Document

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