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// Acorn: Copyright 2012 Marijn Haverbeke, MIT License
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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"}};
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// JS-Interpreter: Copyright 2013 Google LLC, Apache 2.0
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u.prototype.stepBlockStatement=function(a,b,c){var d=b.o||0;if(c=c.body[d])return b.o=d+1,new v(c,b.scope);a.pop()};u.prototype.stepBreakStatement=function(a,b,c){dd(this,1,void 0,c.label&&c.label.name)};
u.prototype.stepCallExpression=function(a,b,c){if(!b.ha){b.ha=1;var d=new v(c.callee,b.scope);d.ga=!0;return d}if(1===b.ha){b.ha=2;d=b.value;if(Array.isArray(d)){if(b.Z=bd(this,d),d[0]===Ba?b.yb="eval"===d[1]:b.G=d[0],d=b.Z,this.I)return b.ha=1,ed(this,d,b.value)}else b.Z=d;b.A=[];b.o=0}d=b.Z;if(!b.Qa){0!==b.o&&b.A.push(b.value);if(c.arguments[b.o])return new v(c.arguments[b.o++],b.scope);if("NewExpression"===c.type){d.Hb&&I(this,this.g,d+" is not a constructor");if(d===this.l)b.G=Ac(this);else{var e=
d.a.prototype;if("object"!==typeof e||null===e)e=this.B;b.G=this.h(e)}b.isConstructor=!0}else void 0===b.G&&(b.G=b.scope.P?void 0:this.Da);b.Qa=!0}if(b.Ra)a.pop(),a[a.length-1].value=b.isConstructor&&"object"!==typeof b.value?b.G:b.value;else{b.Ra=!0;d instanceof F||I(this,this.g,d+" is not a function");if(a=d.node){c=ia(this,a.body,d.va);for(var g=0;g<a.params.length;g++)this.setProperty(c.object,a.params[g].name,b.A.length>g?b.A[g]:void 0);e=Ac(this);for(g=0;g<b.A.length;g++)this.setProperty(e,
g,b.A[g]);this.setProperty(c.object,"arguments",e);(g=a.id&&a.id.name)&&this.setProperty(c.object,g,d);this.setProperty(c.object,"this",b.G,ya);b.value=void 0;return new v(a.body,c)}if(d.eval)if(d=b.A[0],"string"!==typeof d)b.value=d;else{try{g=acorn.parse(String(d),ha)}catch(p){I(this,this.da,"Invalid code: "+p.message)}d=new this.Ha({options:{}});d.type="EvalProgram_";d.body=g.body;ra(d,c.start,c.end);c=b.yb?b.scope:this.M;c.P?c=ia(this,g,c):Pa(this,g,c);this.value=void 0;return new v(d,c)}else if(d.Ga)b.value=
d.Ga.apply(b.G,b.A);else if(d.Ma){var n=this;g=d.Ma.length-1;g=b.A.concat(Array(g)).slice(0,g);g.push(function(p){b.value=p;n.wa=!1});this.wa=!0;d.Ma.apply(b.G,g)}else I(this,this.g,d.F+" is not callable")}};u.prototype.stepCatchClause=function(a,b,c){if(b.K)a.pop();else return b.K=!0,a=Zc(this,b.scope),this.setProperty(a.object,c.param.name,b.Qb),new v(c.body,a)};
u.prototype.stepConditionalExpression=function(a,b,c){var d=b.ba||0;if(0===d)return b.ba=1,new v(c.test,b.scope);if(1===d){b.ba=2;if((d=!!b.value)&&c.consequent)return new v(c.consequent,b.scope);if(!d&&c.alternate)return new v(c.alternate,b.scope);this.value=void 0}a.pop();"ConditionalExpression"===c.type&&(a[a.length-1].value=b.value)};u.prototype.stepContinueStatement=function(a,b,c){dd(this,2,void 0,c.label&&c.label.name)};u.prototype.stepDebuggerStatement=function(a){a.pop()};
u.prototype.stepDoWhileStatement=function(a,b,c){"DoWhileStatement"===c.type&&void 0===b.V&&(b.value=!0,b.V=!0);if(!b.V)return b.V=!0,new v(c.test,b.scope);if(!b.value)a.pop();else if(c.body)return b.V=!1,b.N=!0,new v(c.body,b.scope)};u.prototype.stepEmptyStatement=function(a){a.pop()};u.prototype.stepEvalProgram_=function(a,b,c){var d=b.o||0;if(c=c.body[d])return b.o=d+1,new v(c,b.scope);a.pop();a[a.length-1].value=this.value};
u.prototype.stepExpressionStatement=function(a,b,c){if(!b.K)return b.K=!0,new v(c.expression,b.scope);a.pop();this.value=b.value};
u.prototype.stepForInStatement=function(a,b,c){if(!b.Db&&(b.Db=!0,c.left.declarations&&c.left.declarations[0].init))return b.scope.P&&I(this,this.da,"for-in loop variable declaration may not have an initializer."),new v(c.left,b.scope);if(!b.oa)return b.oa=!0,b.ca||(b.ca=b.value),new v(c.right,b.scope);b.N||(b.N=!0,b.i=b.value,b.Xa=Object.create(null));if(void 0===b.Ea)a:for(;;){if(b.i instanceof F)for(b.ka||(b.ka=Object.getOwnPropertyNames(b.i.a));;){var d=b.ka.shift();if(void 0===d)break;if(Object.prototype.hasOwnProperty.call(b.i.a,
d)&&!b.Xa[d]&&(b.Xa[d]=!0,Object.prototype.propertyIsEnumerable.call(b.i.a,d))){b.Ea=d;break a}}else if(null!==b.i&&void 0!==b.i)for(b.ka||(b.ka=Object.getOwnPropertyNames(b.i));;){d=b.ka.shift();if(void 0===d)break;b.Xa[d]=!0;if(Object.prototype.propertyIsEnumerable.call(b.i,d)){b.Ea=d;break a}}b.i=Pb(this,b.i);b.ka=null;if(null===b.i){a.pop();return}}if(!b.hb)if(b.hb=!0,a=c.left,"VariableDeclaration"===a.type)b.ca=[Ba,a.declarations[0].id.name];else return b.ca=null,b=new v(a,b.scope),b.ga=!0,b;
b.ca||(b.ca=b.value);if(!b.ia&&(b.ia=!0,a=b.Ea,d=cd(this,b.ca,a)))return fd(this,d,b.ca,a);b.Ea=void 0;b.hb=!1;b.ia=!1;if(c.body)return new v(c.body,b.scope)};u.prototype.stepForStatement=function(a,b,c){var d=b.ba||0;if(0===d){if(b.ba=1,c.init)return new v(c.init,b.scope)}else if(1===d){if(b.ba=2,c.test)return new v(c.test,b.scope)}else if(2===d)if(b.ba=3,c.test&&!b.value)a.pop();else return b.N=!0,new v(c.body,b.scope);else if(3===d&&(b.ba=1,c.update))return new v(c.update,b.scope)};
u.prototype.stepFunctionDeclaration=function(a){a.pop()};u.prototype.stepFunctionExpression=function(a,b,c){a.pop();a[a.length-1].value=xc(this,c,b.scope)};u.prototype.stepIdentifier=function(a,b,c){a.pop();if(b.ga)a[a.length-1].value=[Ba,c.name];else{var d=$c(this,c.name);if(this.I){for(a=b.scope;!Bc(this,a,c.name);)a=a.va;return ed(this,d,this.Da)}a[a.length-1].value=d}};u.prototype.stepIfStatement=u.prototype.stepConditionalExpression;
u.prototype.stepLabeledStatement=function(a,b,c){a.pop();a=b.labels||[];a.push(c.label.name);b=new v(c.body,b.scope);b.labels=a;return b};u.prototype.stepLiteral=function(a,b,c){a.pop();b=c.value;b instanceof RegExp&&(c=this.h(this.Aa),Wc(this,c,b),b=c);a[a.length-1].value=b};
u.prototype.stepLogicalExpression=function(a,b,c){if("&&"!==c.operator&&"||"!==c.operator)throw SyntaxError("Unknown logical operator: "+c.operator);if(!b.Y)return b.Y=!0,new v(c.left,b.scope);if(b.pa)a.pop(),a[a.length-1].value=b.value;else if("&&"===c.operator&&!b.value||"||"===c.operator&&b.value)a.pop(),a[a.length-1].value=b.value;else return b.pa=!0,new v(c.right,b.scope)};
u.prototype.stepMemberExpression=function(a,b,c){if(!b.oa)return b.oa=!0,new v(c.object,b.scope);if(c.computed)if(b.Eb)c=b.value;else return b.i=b.value,b.Eb=!0,new v(c.property,b.scope);else b.i=b.value,c=c.property.name;a.pop();if(b.ga)a[a.length-1].value=[b.i,c];else{c=this.u(b.i,c);if(this.I)return ed(this,c,b.i);a[a.length-1].value=c}};u.prototype.stepNewExpression=u.prototype.stepCallExpression;
u.prototype.stepObjectExpression=function(a,b,c){var d=b.o||0,e=c.properties[d];if(b.i){var g=e.key;if("Identifier"===g.type)var n=g.name;else if("Literal"===g.type)n=g.value;else throw SyntaxError("Unknown object structure: "+g.type);b.xa[n]||(b.xa[n]={});b.xa[n][e.kind]=b.value;b.o=++d;e=c.properties[d]}else b.i=this.h(this.B),b.xa=Object.create(null);if(e)return new v(e.value,b.scope);for(g in b.xa)c=b.xa[g],"get"in c||"set"in c?this.setProperty(b.i,g,Ia,{configurable:!0,enumerable:!0,get:c.get,
set:c.set}):this.setProperty(b.i,g,c.init);a.pop();a[a.length-1].value=b.i};u.prototype.stepProgram=function(a,b,c){if(a=c.body.shift())return b.done=!1,new v(a,b.scope);b.done=!0};u.prototype.stepReturnStatement=function(a,b,c){if(c.argument&&!b.K)return b.K=!0,new v(c.argument,b.scope);dd(this,3,b.value,void 0)};u.prototype.stepSequenceExpression=function(a,b,c){var d=b.o||0;if(c=c.expressions[d])return b.o=d+1,new v(c,b.scope);a.pop();a[a.length-1].value=b.value};
u.prototype.stepSwitchStatement=function(a,b,c){if(!b.V)return b.V=1,new v(c.discriminant,b.scope);1===b.V&&(b.V=2,b.Pb=b.value,b.Pa=-1);for(;;){var d=b.Ta||0,e=c.cases[d];if(b.ta||!e||e.test)if(e||b.ta||-1===b.Pa)if(e){if(!b.ta&&!b.qb&&e.test)return b.qb=!0,new v(e.test,b.scope);if(b.ta||b.value===b.Pb){b.ta=!0;var g=b.o||0;if(e.consequent[g])return b.Jb=!0,b.o=g+1,new v(e.consequent[g],b.scope)}b.qb=!1;b.o=0;b.Ta=d+1}else{a.pop();break}else b.ta=!0,b.Ta=b.Pa;else b.Pa=d,b.Ta=d+1}};
u.prototype.stepThisExpression=function(a){a.pop();a[a.length-1].value=$c(this,"this")};u.prototype.stepThrowStatement=function(a,b,c){if(b.K)I(this,b.value);else return b.K=!0,new v(c.argument,b.scope)};
u.prototype.stepTryStatement=function(a,b,c){if(!b.zb)return b.zb=!0,new v(c.block,b.scope);if(b.T&&4===b.T.type&&!b.Cb&&c.handler)return b.Cb=!0,a=new v(c.handler,b.scope),a.Qb=b.T.value,b.T=void 0,a;if(!b.Bb&&c.finalizer)return b.Bb=!0,new v(c.finalizer,b.scope);a.pop();b.T&&dd(this,b.T.type,b.T.value,b.T.label)};
u.prototype.stepUnaryExpression=function(a,b,c){if(!b.K)return b.K=!0,a=new v(c.argument,b.scope),a.ga="delete"===c.operator,a;a.pop();var d=b.value;if("-"===c.operator)d=-d;else if("+"===c.operator)d=+d;else if("!"===c.operator)d=!d;else if("~"===c.operator)d=~d;else if("delete"===c.operator){c=!0;if(Array.isArray(d)){var e=d[0];e===Ba&&(e=b.scope);d=String(d[1]);try{delete e.a[d]}catch(g){b.scope.P?I(this,this.g,"Cannot delete property '"+d+"' of '"+e+"'"):c=!1}}d=c}else if("typeof"===c.operator)d=
d&&"Function"===d.F?"function":typeof d;else if("void"===c.operator)d=void 0;else throw SyntaxError("Unknown unary operator: "+c.operator);a[a.length-1].value=d};
u.prototype.stepUpdateExpression=function(a,b,c){if(!b.Y)return b.Y=!0,a=new v(c.argument,b.scope),a.ga=!0,a;b.sa||(b.sa=b.value);b.na&&(b.$=b.value);if(!b.na){var d=bd(this,b.sa);b.$=d;if(this.I)return b.na=!0,ed(this,d,b.sa)}if(b.ia)a.pop(),a[a.length-1].value=b.Wa;else{d=Number(b.$);if("++"===c.operator)var e=d+1;else if("--"===c.operator)e=d-1;else throw SyntaxError("Unknown update expression: "+c.operator);c=c.prefix?e:d;if(d=cd(this,b.sa,e))return b.ia=!0,b.Wa=c,fd(this,d,b.sa,e);a.pop();a[a.length-
1].value=c}};u.prototype.stepVariableDeclaration=function(a,b,c){c=c.declarations;var d=b.o||0,e=c[d];b.lb&&e&&(ad(this,e.id.name,b.value),b.lb=!1,e=c[++d]);for(;e;){if(e.init)return b.o=d,b.lb=!0,new v(e.init,b.scope);e=c[++d]}a.pop()};u.prototype.stepWithStatement=function(a,b,c){if(b.oa)if(b.Ab)a.pop();else return b.Ab=!0,a=Zc(this,b.scope,b.value),new v(c.body,a);else return b.oa=!0,new v(c.object,b.scope)};u.prototype.stepWhileStatement=u.prototype.stepDoWhileStatement;this.Interpreter=u;
u.prototype.step=u.prototype.step;u.prototype.run=u.prototype.nb;u.prototype.appendCode=u.prototype.ub;u.prototype.createObject=u.prototype.ma;u.prototype.createObjectProto=u.prototype.h;u.prototype.createAsyncFunction=u.prototype.eb;u.prototype.createNativeFunction=u.prototype.b;u.prototype.getProperty=u.prototype.u;u.prototype.setProperty=u.prototype.setProperty;u.prototype.nativeToPseudo=u.prototype.ua;u.prototype.pseudoToNative=u.prototype.J;u.prototype.createPrimitive=function(a){return a};