From c9c6fa702c3b7ce265147ee2de5b732e2d08e6b5 Mon Sep 17 00:00:00 2001 From: Neil Fraser Date: Tue, 5 Nov 2019 13:01:49 -0800 Subject: [PATCH] Update JS-Interpreter to latest version And fix alerting falsy values. --- demos/interpreter/acorn_interpreter.js | 230 +++++++++++-------------- demos/interpreter/step-execution.html | 5 +- 2 files changed, 103 insertions(+), 132 deletions(-) diff --git a/demos/interpreter/acorn_interpreter.js b/demos/interpreter/acorn_interpreter.js index 81e521b07..249bc6cdd 100644 --- a/demos/interpreter/acorn_interpreter.js +++ b/demos/interpreter/acorn_interpreter.js @@ -38,132 +38,104 @@ Pb=RegExp("[\u00aa\u00b5\u00ba\u00c0-\u00d6\u00d8-\u00f6\u00f8-\u02c1\u02c6-\u02 na=/[\n\r\u2028\u2029]/,Y=/\r\n|[\n\r\u2028\u2029]/g,la=a.isIdentifierStart=function(a){return 65>a?36===a:91>a?!0:97>a?95===a:123>a?!0:170<=a&&Za.test(String.fromCharCode(a))},ab=a.isIdentifierChar=function(a){return 48>a?36===a:58>a?!0:65>a?!1:91>a?!0:97>a?95===a:123>a?!0:170<=a&&Pb.test(String.fromCharCode(a))},ca,Ia={kind:"loop"},Ob={kind:"switch"}}; "object"==typeof exports&&"object"==typeof module?mod$$inline_58(exports):"function"==typeof define&&define.amd?define(["exports"],mod$$inline_58):mod$$inline_58(this.acorn||(this.acorn={})); // JS-Interpreter: Copyright 2013 Google LLC, Apache 2.0 -var Interpreter=function(a,b){"string"==typeof a&&(a=acorn.parse(a,Interpreter.PARSE_OPTIONS));this.ast=a;this.initFunc_=b;this.paused_=!1;this.polyfills_=[];this.UNDEFINED=new Interpreter.Primitive(void 0,this);this.NULL=new Interpreter.Primitive(null,this);this.NAN=new Interpreter.Primitive(NaN,this);this.TRUE=new Interpreter.Primitive(!0,this);this.FALSE=new Interpreter.Primitive(!1,this);this.NUMBER_ZERO=new Interpreter.Primitive(0,this);this.NUMBER_ONE=new Interpreter.Primitive(1,this);this.STRING_EMPTY= -new Interpreter.Primitive("",this);b=this.createScope(this.ast,null);this.NAN.parent=this.NUMBER;this.TRUE.parent=this.BOOLEAN;this.FALSE.parent=this.BOOLEAN;this.NUMBER_ZERO.parent=this.NUMBER;this.NUMBER_ONE.parent=this.NUMBER;this.STRING_EMPTY.parent=this.STRING;this.ast=acorn.parse(this.polyfills_.join("\n"),Interpreter.PARSE_OPTIONS);this.polyfills_=void 0;this.stripLocations_(this.ast);this.stateStack=[{node:this.ast,scope:b,thisExpression:b,done:!1}];this.run();this.value=this.UNDEFINED;this.ast= -a;this.stateStack=[{node:this.ast,scope:b,thisExpression:b,done:!1}]};Interpreter.PARSE_OPTIONS={ecmaVersion:5};Interpreter.READONLY_DESCRIPTOR={configurable:!0,enumerable:!0,writable:!1};Interpreter.NONENUMERABLE_DESCRIPTOR={configurable:!0,enumerable:!1,writable:!0};Interpreter.READONLY_NONENUMERABLE_DESCRIPTOR={configurable:!0,enumerable:!1,writable:!1}; -Interpreter.prototype.appendCode=function(a){var b=this.stateStack[this.stateStack.length-1];if(!b||"Program"!=b.node.type)throw Error("Expecting original AST to start with a Program node.");"string"==typeof a&&(a=acorn.parse(a,Interpreter.PARSE_OPTIONS));if(!a||"Program"!=a.type)throw Error("Expecting new AST to start with a Program node.");this.populateScope_(a,b.scope);for(var c=0,d;d=a.body[c];c++)b.node.body.push(d);b.done=!1}; -Interpreter.prototype.step=function(){var a=this.stateStack[0];if(!a||"Program"==a.node.type&&a.done)return!1;if(this.paused_)return!0;this["step"+a.node.type]();return a.node.end?!0:this.step()};Interpreter.prototype.run=function(){for(;!this.paused_&&this.step(););return this.paused_}; -Interpreter.prototype.initGlobalScope=function(a){this.setProperty(a,"Infinity",this.createPrimitive(Infinity),Interpreter.READONLY_DESCRIPTOR);this.setProperty(a,"NaN",this.NAN,Interpreter.READONLY_DESCRIPTOR);this.setProperty(a,"undefined",this.UNDEFINED,Interpreter.READONLY_DESCRIPTOR);this.setProperty(a,"window",a,Interpreter.READONLY_DESCRIPTOR);this.setProperty(a,"self",a);this.initFunction(a);this.initObject(a);a.parent=this.OBJECT;this.initArray(a);this.initNumber(a);this.initString(a);this.initBoolean(a); -this.initDate(a);this.initMath(a);this.initRegExp(a);this.initJSON(a);this.initError(a);var b=this,c;c=function(a){a=a||b.UNDEFINED;return b.createPrimitive(isNaN(a.toNumber()))};this.setProperty(a,"isNaN",this.createNativeFunction(c));c=function(a){a=a||b.UNDEFINED;return b.createPrimitive(isFinite(a.toNumber()))};this.setProperty(a,"isFinite",this.createNativeFunction(c));this.setProperty(a,"parseFloat",this.getProperty(this.NUMBER,"parseFloat"));this.setProperty(a,"parseInt",this.getProperty(this.NUMBER, -"parseInt"));c=this.createObject(this.FUNCTION);c.eval=!0;this.setProperty(c,"length",this.NUMBER_ONE,Interpreter.READONLY_DESCRIPTOR);this.setProperty(a,"eval",c);for(var d=[[escape,"escape"],[unescape,"unescape"],[decodeURI,"decodeURI"],[decodeURIComponent,"decodeURIComponent"],[encodeURI,"encodeURI"],[encodeURIComponent,"encodeURIComponent"]],h=0;ha?Math.max(this.length+a,0):Math.min(a,this.length);d=c(d,Infinity);d=Math.min(d,this.length-a);for(var g=b.createObject(b.ARRAY),h=a;h=a;h--)this.properties[h+arguments.length-2]=this.properties[h];this.length+=arguments.length-2;for(h=2;hh&&(h=this.length+h);h=Math.max(0,Math.min(h,this.length)); -d=c(d,this.length);0>d&&(d=this.length+d);d=Math.max(0,Math.min(d,this.length));for(a=0;hd&&(d=this.length+d);for(d=Math.max(0,d);dd&&(d=this.length+d);for(d=Math.min(d,this.length-1);0<=d;d--){var h=b.getProperty(this,d);if(h.isPrimitive&&a.isPrimitive?h.data===a.data:h===a)return b.createPrimitive(d)}return b.createPrimitive(-1)};this.setNativeFunctionPrototype(this.ARRAY,"lastIndexOf",d);this.polyfills_.push("Object.defineProperty(Array.prototype, 'every', {configurable: true, value:","function(callbackfn, thisArg) {", -"if (this == null || typeof callbackfn !== 'function') throw new TypeError;","var T, k;","var O = Object(this);","var len = O.length >>> 0;","if (arguments.length > 1) T = thisArg;","k = 0;","while (k < len) {","if (k in O && !callbackfn.call(T, O[k], k, O)) return false;","k++;","}","return true;","}","});","Object.defineProperty(Array.prototype, 'filter', {configurable: true, value:","function(fun/*, thisArg*/) {","if (this === void 0 || this === null || typeof fun !== 'function') throw new TypeError;", -"var t = Object(this);","var len = t.length >>> 0;","var res = [];","var thisArg = arguments.length >= 2 ? arguments[1] : void 0;","for (var i = 0; i < len; i++) {","if (i in t) {","var val = t[i];","if (fun.call(thisArg, val, i, t)) res.push(val);","}","}","return res;","}","});","Object.defineProperty(Array.prototype, 'forEach', {configurable: true, value:","function(callback, thisArg) {","if (this == null || typeof callback !== 'function') throw new TypeError;","var T, k;","var O = Object(this);", -"var len = O.length >>> 0;","if (arguments.length > 1) T = thisArg;","k = 0;","while (k < len) {","if (k in O) callback.call(T, O[k], k, O);","k++;","}","}","});","Object.defineProperty(Array.prototype, 'map', {configurable: true, value:","function(callback, thisArg) {","if (this == null || typeof callback !== 'function') new TypeError;","var T, A, k;","var O = Object(this);","var len = O.length >>> 0;","if (arguments.length > 1) T = thisArg;","A = new Array(len);","k = 0;","while (k < len) {","if (k in O) A[k] = callback.call(T, O[k], k, O);", -"k++;","}","return A;","}","});","Object.defineProperty(Array.prototype, 'reduce', {configurable: true, value:","function(callback /*, initialValue*/) {","if (this == null || typeof callback !== 'function') throw new TypeError;","var t = Object(this), len = t.length >>> 0, k = 0, value;","if (arguments.length == 2) {","value = arguments[1];","} else {","while (k < len && !(k in t)) k++;","if (k >= len) {","throw new TypeError('Reduce of empty array with no initial value');","}","value = t[k++];", -"}","for (; k < len; k++) {","if (k in t) value = callback(value, t[k], k, t);","}","return value;","}","});","Object.defineProperty(Array.prototype, 'reduceRight', {configurable: true, value:","function(callback /*, initialValue*/) {","if (null === this || 'undefined' === typeof this || 'function' !== typeof callback) throw new TypeError;","var t = Object(this), len = t.length >>> 0, k = len - 1, value;","if (arguments.length >= 2) {","value = arguments[1];","} else {","while (k >= 0 && !(k in t)) k--;", -"if (k < 0) {","throw new TypeError('Reduce of empty array with no initial value');","}","value = t[k--];","}","for (; k >= 0; k--) {","if (k in t) value = callback(value, t[k], k, t);","}","return value;","}","});","Object.defineProperty(Array.prototype, 'some', {configurable: true, value:","function(fun/*, thisArg*/) {","if (this == null || typeof fun !== 'function') throw new TypeError;","var t = Object(this);","var len = t.length >>> 0;","var thisArg = arguments.length >= 2 ? arguments[1] : void 0;", -"for (var i = 0; i < len; i++) {","if (i in t && fun.call(thisArg, t[i], i, t)) {","return true;","}","}","return false;","}","});","Object.defineProperty(Array.prototype, 'sort', {configurable: true, value:","function(opt_comp) {","for (var i = 0; i < this.length; i++) {","var changes = 0;","for (var j = 0; j < this.length - i - 1; j++) {","if (opt_comp ?opt_comp(this[j], this[j + 1]) > 0 : this[j] > this[j + 1]) {","var swap = this[j];","this[j] = this[j + 1];","this[j + 1] = swap;","changes++;", -"}","}","if (changes <= 1) break;","}","return this;","}","});","Object.defineProperty(Array.prototype, 'toLocaleString', {configurable: true, value:","function() {","var out = [];","for (var i = 0; i < this.length; i++) {","out[i] = (this[i] === null || this[i] === undefined) ? '' : this[i].toLocaleString();","}","return out.join(',');","}","});","")}; -Interpreter.prototype.initNumber=function(a){var b=this,c;c=function(a){a=a?a.toNumber():0;if(this.parent!=b.NUMBER)return b.createPrimitive(a);this.data=a;return this};this.NUMBER=this.createNativeFunction(c);this.setProperty(a,"Number",this.NUMBER);a=["MAX_VALUE","MIN_VALUE","NaN","NEGATIVE_INFINITY","POSITIVE_INFINITY"];for(c=0;cb?1:0};Interpreter.prototype.arrayIndex=function(a){a=Number(a);return!isFinite(a)||a!=Math.floor(a)||0>a?NaN:a}; -Interpreter.Primitive=function(a,b){var c=typeof a;this.data=a;this.type=c;"number"==c?this.parent=b.NUMBER:"string"==c?this.parent=b.STRING:"boolean"==c&&(this.parent=b.BOOLEAN)};Interpreter.Primitive.prototype.data=void 0;Interpreter.Primitive.prototype.type="undefined";Interpreter.Primitive.prototype.parent=null;Interpreter.Primitive.prototype.isPrimitive=!0;Interpreter.Primitive.prototype.toBoolean=function(){return!!this.data};Interpreter.Primitive.prototype.toNumber=function(){return Number(this.data)}; -Interpreter.Primitive.prototype.toString=function(){return String(this.data)};Interpreter.Primitive.prototype.valueOf=function(){return this.data};Interpreter.prototype.createPrimitive=function(a){return void 0===a?this.UNDEFINED:null===a?this.NULL:!0===a?this.TRUE:!1===a?this.FALSE:0===a?this.NUMBER_ZERO:1===a?this.NUMBER_ONE:""===a?this.STRING_EMPTY:a instanceof RegExp?this.populateRegExp_(this.createObject(this.REGEXP),a):new Interpreter.Primitive(a,this)}; -Interpreter.Object=function(a){this.notConfigurable=Object.create(null);this.notEnumerable=Object.create(null);this.notWritable=Object.create(null);this.getter=Object.create(null);this.setter=Object.create(null);this.properties=Object.create(null);this.parent=a};Interpreter.Object.prototype.type="object";Interpreter.Object.prototype.parent=null;Interpreter.Object.prototype.isPrimitive=!1;Interpreter.Object.prototype.data=void 0;Interpreter.Object.prototype.toBoolean=function(){return!0}; -Interpreter.Object.prototype.toNumber=function(){return Number(void 0===this.data?this.toString():this.data)};Interpreter.Object.prototype.toString=function(){return void 0===this.data?"["+this.type+"]":String(this.data)};Interpreter.Object.prototype.valueOf=function(){return void 0===this.data?this:this.data}; -Interpreter.prototype.createObject=function(a){a=new Interpreter.Object(a);this.isa(a,this.FUNCTION)&&(a.type="function",this.setProperty(a,"prototype",this.createObject(this.OBJECT||null)));this.isa(a,this.ARRAY)&&(a.length=0,a.toString=function(){for(var a=[],c=0;c>="==b.operator)b=d>>h;else if(">>>="==b.operator)b=d>>>h;else if("&="==b.operator)b=d&h;else if("^="==b.operator)b=d^h;else if("|="==b.operator)b=d|h;else throw SyntaxError("Unknown assignment expression: "+b.operator);b=this.createPrimitive(b)}(c=this.setValue(a.leftSide,b))?(a.doneSetter_=b,this.stateStack.unshift({node:{type:"CallExpression"},doneCallee_:!0,funcThis_:a.leftSide[0],func_:c,doneArgs_:!0,arguments:[b]})): -(this.stateStack.shift(),this.stateStack[0].value=b)}else{a.leftSide||(a.leftSide=a.value);a.doneGetter_&&(a.leftValue=a.value);if(!a.doneGetter_&&"="!=b.operator&&(a.leftValue=this.getValue(a.leftSide),a.leftValue.isGetter)){a.leftValue.isGetter=!1;a.doneGetter_=!0;this.stateStack.unshift({node:{type:"CallExpression"},doneCallee_:!0,funcThis_:a.leftSide[0],func_:a.leftValue,doneArgs_:!0,arguments:[]});return}a.doneRight=!0;this.stateStack.unshift({node:b.right})}else a.doneLeft=!0,this.stateStack.unshift({node:b.left, -components:!0})}; -Interpreter.prototype.stepBinaryExpression=function(){var a=this.stateStack[0],b=a.node;if(a.doneLeft)if(a.doneRight){this.stateStack.shift();var c=a.leftValue,a=a.value,d=this.comp(c,a);if("=="==b.operator||"!="==b.operator)c=c.isPrimitive&&a.isPrimitive?c.data==a.data:0===d,"!="==b.operator&&(c=!c);else if("==="==b.operator||"!=="==b.operator)c=c.isPrimitive&&a.isPrimitive?c.data===a.data:c===a,"!=="==b.operator&&(c=!c);else if(">"==b.operator)c=1==d;else if(">="==b.operator)c=1==d||0===d;else if("<"== -b.operator)c=-1==d;else if("<="==b.operator)c=-1==d||0===d;else if("+"==b.operator)c=c.isPrimitive?c.data:c.toString(),a=a.isPrimitive?a.data:a.toString(),c+=a;else if("in"==b.operator)c=this.hasProperty(a,c);else if("instanceof"==b.operator)this.isa(a,this.FUNCTION)||this.throwException(this.TYPE_ERROR,"Expecting a function in instanceof check"),c=this.isa(c,a);else if(c=c.toNumber(),a=a.toNumber(),"-"==b.operator)c-=a;else if("*"==b.operator)c*=a;else if("/"==b.operator)c/=a;else if("%"==b.operator)c%= -a;else if("&"==b.operator)c&=a;else if("|"==b.operator)c|=a;else if("^"==b.operator)c^=a;else if("<<"==b.operator)c<<=a;else if(">>"==b.operator)c>>=a;else if(">>>"==b.operator)c>>>=a;else throw SyntaxError("Unknown binary operator: "+b.operator);this.stateStack[0].value=this.createPrimitive(c)}else a.doneRight=!0,a.leftValue=a.value,this.stateStack.unshift({node:b.right});else a.doneLeft=!0,this.stateStack.unshift({node:b.left})}; -Interpreter.prototype.stepBlockStatement=function(){var a=this.stateStack[0],b=a.node,c=a.n_||0;b.body[c]?(a.done=!1,a.n_=c+1,this.stateStack.unshift({node:b.body[c]})):(a.done=!0,"Program"!=a.node.type&&this.stateStack.shift())}; -Interpreter.prototype.stepBreakStatement=function(){var a=this.stateStack.shift(),a=a.node,b=null;a.label&&(b=a.label.name);for(a=this.stateStack.shift();a&&"CallExpression"!=a.node.type&&"NewExpression"!=a.node.type;){if(b?b==a.label:a.isLoop||a.isSwitch)return;a=this.stateStack.shift()}throw SyntaxError("Illegal break statement");}; -Interpreter.prototype.stepCallExpression=function(){var a=this.stateStack[0],b=a.node;if(a.doneCallee_){if(!a.func_){if("function"==a.value.type)a.func_=a.value;else{a.value.length&&(a.member_=a.value[0]);a.func_=this.getValue(a.value);if(!a.func_)return;if("function"!=a.func_.type){this.throwException(this.TYPE_ERROR,(a.value&&a.value.type)+" is not a function");return}}"NewExpression"==a.node.type?(a.funcThis_=this.createObject(a.func_),a.isConstructor_=!0):a.funcThis_=a.func_.boundThis_?a.func_.boundThis_: -a.value.length?a.value[0]:this.stateStack[this.stateStack.length-1].thisExpression;a.arguments=a.func_.boundArgs_?a.func_.boundArgs_.concat():[];a.n_=0}if(!a.doneArgs_){0!=a.n_&&a.arguments.push(a.value);if(b.arguments[a.n_]){this.stateStack.unshift({node:b.arguments[a.n_]});a.n_++;return}a.doneArgs_=!0}if(a.doneExec_)this.stateStack.shift(),this.stateStack[0].value=a.isConstructor_&&"object"!==a.value.type?a.funcThis_:a.value;else if(a.doneExec_=!0,a.func_.node){for(var b=this.createScope(a.func_.node.body, -a.func_.parentScope),c=0;cc?a.arguments[c]:this.UNDEFINED;this.setProperty(b,d,h)}d=this.createObject(this.ARRAY);for(c=0;c>> 0;","if (arguments.length > 1) T = thisArg;","k = 0;","while (k < len) {","if (k in O && !callbackfn.call(T, O[k], k, O)) return false;","k++;","}","return true;", +"}","});","Object.defineProperty(Array.prototype, 'filter',","{configurable: true, writable: true, value:","function(fun/*, thisArg*/) {","if (this === void 0 || this === null || typeof fun !== 'function') throw TypeError();","var t = Object(this);","var len = t.length >>> 0;","var res = [];","var thisArg = arguments.length >= 2 ? arguments[1] : void 0;","for (var i = 0; i < len; i++) {","if (i in t) {","var val = t[i];","if (fun.call(thisArg, val, i, t)) res.push(val);","}","}","return res;","}", +"});","Object.defineProperty(Array.prototype, 'forEach',","{configurable: true, writable: true, value:","function(callback, thisArg) {","if (!this || typeof callback !== 'function') throw TypeError();","var T, k;","var O = Object(this);","var len = O.length >>> 0;","if (arguments.length > 1) T = thisArg;","k = 0;","while (k < len) {","if (k in O) callback.call(T, O[k], k, O);","k++;","}","}","});","Object.defineProperty(Array.prototype, 'map',","{configurable: true, writable: true, value:","function(callback, thisArg) {", +"if (!this || typeof callback !== 'function') new TypeError;","var T, A, k;","var O = Object(this);","var len = O.length >>> 0;","if (arguments.length > 1) T = thisArg;","A = new Array(len);","k = 0;","while (k < len) {","if (k in O) A[k] = callback.call(T, O[k], k, O);","k++;","}","return A;","}","});","Object.defineProperty(Array.prototype, 'reduce',","{configurable: true, writable: true, value:","function(callback /*, initialValue*/) {","if (!this || typeof callback !== 'function') throw TypeError();", +"var t = Object(this), len = t.length >>> 0, k = 0, value;","if (arguments.length === 2) {","value = arguments[1];","} else {","while (k < len && !(k in t)) k++;","if (k >= len) {","throw TypeError('Reduce of empty array with no initial value');","}","value = t[k++];","}","for (; k < len; k++) {","if (k in t) value = callback(value, t[k], k, t);","}","return value;","}","});","Object.defineProperty(Array.prototype, 'reduceRight',","{configurable: true, writable: true, value:","function(callback /*, initialValue*/) {", +"if (null === this || 'undefined' === typeof this || 'function' !== typeof callback) throw TypeError();","var t = Object(this), len = t.length >>> 0, k = len - 1, value;","if (arguments.length >= 2) {","value = arguments[1];","} else {","while (k >= 0 && !(k in t)) k--;","if (k < 0) {","throw TypeError('Reduce of empty array with no initial value');","}","value = t[k--];","}","for (; k >= 0; k--) {","if (k in t) value = callback(value, t[k], k, t);","}","return value;","}","});","Object.defineProperty(Array.prototype, 'some',", +"{configurable: true, writable: true, value:","function(fun/*, thisArg*/) {","if (!this || typeof fun !== 'function') throw TypeError();","var t = Object(this);","var len = t.length >>> 0;","var thisArg = arguments.length >= 2 ? arguments[1] : void 0;","for (var i = 0; i < len; i++) {","if (i in t && fun.call(thisArg, t[i], i, t)) {","return true;","}","}","return false;","}","});","(function() {","var sort_ = Array.prototype.sort;","Array.prototype.sort = function(opt_comp) {","if (typeof opt_comp !== 'function') {", +"return sort_.call(this);","}","for (var i = 0; i < this.length; i++) {","var changes = 0;","for (var j = 0; j < this.length - i - 1; j++) {","if (opt_comp(this[j], this[j + 1]) > 0) {","var swap = this[j];","this[j] = this[j + 1];","this[j + 1] = swap;","changes++;","}","}","if (!changes) break;","}","return this;","};","})();","Object.defineProperty(Array.prototype, 'toLocaleString',","{configurable: true, writable: true, value:","function() {","var out = [];","for (var i = 0; i < this.length; i++) {", +"out[i] = (this[i] === null || this[i] === undefined) ? 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