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peg-0.6.2.min.js

peg-0.6.2.min.js 47 KB
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  1. /* PEG.js 0.6.2 (http://pegjs.majda.cz/) */(function(){function contains(a,b){var c=a.length;for(var d=0;d<c;d++)if(a[d]===b)return!0;return!1}function each(a,b){var c=a.length;for(var d=0;d<c;d++)b(a[d])}function map(a,b){var c=[],d=a.length;for(var e=0;e<d;e++)c[e]=b(a[e]);return c}function padLeft(a,b,c){var d=a,e=c-a.length;for(var f=0;f<e;f++)d=b+d;return d}function escape(a){var b=a.charCodeAt(0);if(b<=255)var c="x",d=2;else var c="u",d=4;return"\\"+c+padLeft(b.toString(16).toUpperCase(),"0",d)}function quote(a){return'"'+a.replace(/\\/g,"\\\\").replace(/"/g,'\\"').replace(/\r/g,"\\r").replace(/\n/g,"\\n").replace(/[\x80-\uFFFF]/g,escape)+'"'}function quoteForRegexpClass(a){return a.replace(/\\/g,"\\\\").replace(/\0/g,"\\0").replace(/\//g,"\\/").replace(/]/g,"\\]").replace(/-/g,"\\-").replace(/\r/g,"\\r").replace(/\n/g,"\\n").replace(/[\x80-\uFFFF]/g,escape)}function buildNodeVisitor(a){return function(b){return a[b.type].apply(null,arguments)}}var undefined,PEG={VERSION:"0.6.2",buildParser:function(a){return PEG.compiler.compile(PEG.parser.parse(a))}};PEG.GrammarError=function(a){this.name="PEG.GrammarError",this.message=a},PEG.GrammarError.prototype=Error.prototype,PEG.parser=function(){var a={parse:function(a,b){function i(a,b,c){var d=a,e=c-a.length;for(var f=0;f<e;f++)d=b+d;return d}function j(a){var b=a.charCodeAt(0);if(b<=255)var c="x",d=2;else var c="u",d=4;return"\\"+c+i(b.toString(16).toUpperCase(),"0",d)}function k(a){return'"'+a.replace(/\\/g,"\\\\").replace(/"/g,'\\"').replace(/\r/g,"\\r").replace(/\n/g,"\\n").replace(/[\x80-\uFFFF]/g,j)+'"'}function l(a){if(d<f)return;d>f&&(f=d,g=[]),g.push(a)}function m(){var a="grammar@"+d,b=h[a];if(b)return d=b.nextPos,b.result;var c=d,e=d,f=bg();if(f!==null){var g=n(),i=g!==null?g:"";if(i!==null){var j=o();if(j!==null){var k=[];while(j!==null){k.push(j);var j=o()}}else var k=null;if(k!==null)var l=[f,i,k];else{var l=null;d=e}}else{var l=null;d=e}}else{var l=null;d=e}var m=l!==null?function(a,b){var c={};return each(b,function(a){c[a.name]=a}),{type:"grammar",initializer:a!==""?a:null,rules:c,startRule:b[0].name}}(l[1],l[2]):null;if(m!==null)var p=m;else{var p=null;d=c}return h[a]={nextPos:d,result:p},p}function n(){var a="initializer@"+d,b=h[a];if(b)return d=b.nextPos,b.result;var c=d,e=d,f=v();if(f!==null){var g=B(),i=g!==null?g:"";if(i!==null)var j=[f,i];else{var j=null;d=e}}else{var j=null;d=e}var k=j!==null?function(a){return{type:"initializer",code:a}}(j[0]):null;if(k!==null)var l=k;else{var l=null;d=c}return h[a]={nextPos:d,result:l},l}function o(){var b="rule@"+d,c=h[b];if(c)return d=c.nextPos,c.result;var f=d,g=d,i=L();if(i!==null){var j=M();if(j!==null)var k=j;else{if(a.substr(d,0)===""){var m="";d+=0}else{var m=null;e&&l('""')}if(m!==null)var k=m;else var k=null}if(k!==null){var n=z();if(n!==null){var o=p();if(o!==null){var q=B(),r=q!==null?q:"";if(r!==null)var s=[i,k,n,o,r];else{var s=null;d=g}}else{var s=null;d=g}}else{var 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f=d,g=d;if(a.substr(d,1)==='"'){var i='"';d+=1}else{var i=null;e&&l('"\\""')}if(i!==null){var j=[],k=O();while(k!==null){j.push(k);var k=O()}if(j!==null){if(a.substr(d,1)==='"'){var m='"';d+=1}else{var m=null;e&&l('"\\""')}if(m!==null)var n=[i,j,m];else{var n=null;d=g}}else{var n=null;d=g}}else{var n=null;d=g}var o=n!==null?function(a){return a.join("")}(n[1]):null;if(o!==null)var p=o;else{var p=null;d=f}return h[b]={nextPos:d,result:p},p}function O(){var a="doubleQuotedCharacter@"+d,b=h[a];if(b)return d=b.nextPos,b.result;var c=P();if(c!==null)var e=c;else{var f=Y();if(f!==null)var e=f;else{var g=Z();if(g!==null)var e=g;else{var i=$();if(i!==null)var e=i;else{var j=_();if(j!==null)var e=j;else{var k=ba();if(k!==null)var e=k;else var e=null}}}}}return h[a]={nextPos:d,result:e},e}function P(){var b="simpleDoubleQuotedCharacter@"+d,c=h[b];if(c)return d=c.nextPos,c.result;var f=d,g=d,i=d,j=e;e=!1;if(a.substr(d,1)==='"'){var k='"';d+=1}else{var k=null;e&&l('"\\""')}if(k!==null)var 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a="bracketDelimitedCharacter@"+d,b=h[a];if(b)return d=b.nextPos,b.result;var c=X();if(c!==null)var e=c;else{var f=Y();if(f!==null)var e=f;else{var g=Z();if(g!==null)var e=g;else{var i=$();if(i!==null)var e=i;else{var j=_();if(j!==null)var e=j;else{var k=ba();if(k!==null)var e=k;else var e=null}}}}}return h[a]={nextPos:d,result:e},e}function X(){var b="simpleBracketDelimitedCharacter@"+d,c=h[b];if(c)return d=c.nextPos,c.result;var f=d,g=d,i=d,j=e;e=!1;if(a.substr(d,1)==="]"){var k="]";d+=1}else{var k=null;e&&l('"]"')}if(k!==null)var m=k;else{if(a.substr(d,1)==="\\"){var n="\\";d+=1}else{var n=null;e&&l('"\\\\"')}if(n!==null)var m=n;else{var o=bl();if(o!==null)var m=o;else var m=null}}e=j;if(m===null)var p="";else{var p=null;d=i}if(p!==null){if(a.length>d){var q=a.charAt(d);d++}else{var q=null;e&&l("any character")}if(q!==null)var r=[p,q];else{var r=null;d=g}}else{var r=null;d=g}var s=r!==null?function(a){return a}(r[1]):null;if(s!==null)var t=s;else{var t=null;d=f}return 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b="zeroEscapeSequence@"+d,c=h[b];if(c)return d=c.nextPos,c.result;var f=d,g=d;if(a.substr(d,2)==="\\0"){var i="\\0";d+=2}else{var i=null;e&&l('"\\\\0"')}if(i!==null){var j=d,k=e;e=!1;var m=bb();e=k;if(m===null)var n="";else{var n=null;d=j}if(n!==null)var o=[i,n];else{var o=null;d=g}}else{var o=null;d=g}var p=o!==null?function(){return"�"}():null;if(p!==null)var q=p;else{var q=null;d=f}return h[b]={nextPos:d,result:q},q}function $(){var b="hexEscapeSequence@"+d,c=h[b];if(c)return d=c.nextPos,c.result;var f=d,g=d;if(a.substr(d,2)==="\\x"){var i="\\x";d+=2}else{var i=null;e&&l('"\\\\x"')}if(i!==null){var j=bc();if(j!==null){var k=bc();if(k!==null)var m=[i,j,k];else{var m=null;d=g}}else{var m=null;d=g}}else{var m=null;d=g}var n=m!==null?function(a,b){return String.fromCharCode(parseInt("0x"+a+b))}(m[1],m[2]):null;if(n!==null)var o=n;else{var o=null;d=f}return h[b]={nextPos:d,result:o},o}function _(){var b="unicodeEscapeSequence@"+d,c=h[b];if(c)return d=c.nextPos,c.result;var f=d,g=d;if(a.substr(d,2)==="\\u"){var i="\\u";d+=2}else{var i=null;e&&l('"\\\\u"')}if(i!==null){var j=bc();if(j!==null){var k=bc();if(k!==null){var m=bc();if(m!==null){var n=bc();if(n!==null)var o=[i,j,k,m,n];else{var o=null;d=g}}else{var o=null;d=g}}else{var o=null;d=g}}else{var o=null;d=g}}else{var o=null;d=g}var p=o!==null?function(a,b,c,d){return String.fromCharCode(parseInt("0x"+a+b+c+d))}(o[1],o[2],o[3],o[4]):null;if(p!==null)var q=p;else{var q=null;d=f}return h[b]={nextPos:d,result:q},q}function ba(){var b="eolEscapeSequence@"+d,c=h[b];if(c)return d=c.nextPos,c.result;var f=d,g=d;if(a.substr(d,1)==="\\"){var i="\\";d+=1}else{var i=null;e&&l('"\\\\"')}if(i!==null){var j=bk();if(j!==null)var k=[i,j];else{var k=null;d=g}}else{var k=null;d=g}var m=k!==null?function(a){return a}(k[1]):null;if(m!==null)var n=m;else{var n=null;d=f}return h[b]={nextPos:d,result:n},n}function bb(){var b="digit@"+d,c=h[b];if(c)return d=c.nextPos,c.result;if(a.substr(d).match(/^[0-9]/)!==null){var f=a.charAt(d);d++}else{var f=null;e&&l("[0-9]")}return h[b]={nextPos:d,result:f},f}function bc(){var b="hexDigit@"+d,c=h[b];if(c)return d=c.nextPos,c.result;if(a.substr(d).match(/^[0-9a-fA-F]/)!==null){var f=a.charAt(d);d++}else{var f=null;e&&l("[0-9a-fA-F]")}return h[b]={nextPos:d,result:f},f}function bd(){var a="letter@"+d,b=h[a];if(b)return d=b.nextPos,b.result;var c=be();if(c!==null)var e=c;else{var f=bf();if(f!==null)var e=f;else var e=null}return h[a]={nextPos:d,result:e},e}function be(){var b="lowerCaseLetter@"+d,c=h[b];if(c)return d=c.nextPos,c.result;if(a.substr(d).match(/^[a-z]/)!==null){var f=a.charAt(d);d++}else{var f=null;e&&l("[a-z]")}return h[b]={nextPos:d,result:f},f}function bf(){var b="upperCaseLetter@"+d,c=h[b];if(c)return d=c.nextPos,c.result;if(a.substr(d).match(/^[A-Z]/)!==null){var f=a.charAt(d);d++}else{var f=null;e&&l("[A-Z]")}return h[b]={nextPos:d,result:f},f}function bg(){var a="__@"+d,b=h[a];if(b)return d=b.nextPos,b.result;var c=[],e=bm();if(e!==null)var f=e;else{var g=bk();if(g!==null)var f=g;else{var i=bh();if(i!==null)var f=i;else var f=null}}while(f!==null){c.push(f);var e=bm();if(e!==null)var f=e;else{var g=bk();if(g!==null)var f=g;else{var i=bh();if(i!==null)var f=i;else var f=null}}}return h[a]={nextPos:d,result:c},c}function bh(){var a="comment@"+d,b=h[a];if(b)return d=b.nextPos,b.result;var c=e;e=!1;var f=bi();if(f!==null)var g=f;else{var i=bj();if(i!==null)var g=i;else var g=null}return e=c,e&&g===null&&l("comment"),h[a]={nextPos:d,result:g},g}function bi(){var b="singleLineComment@"+d,c=h[b];if(c)return d=c.nextPos,c.result;var f=d;if(a.substr(d,2)==="//"){var g="//";d+=2}else{var g=null;e&&l('"//"')}if(g!==null){var i=[],j=d,k=d,m=e;e=!1;var n=bl();e=m;if(n===null)var o="";else{var o=null;d=k}if(o!==null){if(a.length>d){var p=a.charAt(d);d++}else{var p=null;e&&l("any character")}if(p!==null)var q=[o,p];else{var q=null;d=j}}else{var q=null;d=j}while(q!==null){i.push(q);var j=d,k=d,m=e;e=!1;var n=bl();e=m;if(n===null)var o="";else{var o=null;d=k}if(o!==null){if(a.length>d){var p=a.charAt(d);d++}else{var p=null;e&&l("any character")}if(p!==null)var q=[o,p];else{var q=null;d=j}}else{var q=null;d=j}}if(i!==null)var r=[g,i];else{var r=null;d=f}}else{var r=null;d=f}return h[b]={nextPos:d,result:r},r}function bj(){var b="multiLineComment@"+d,c=h[b];if(c)return d=c.nextPos,c.result;var f=d;if(a.substr(d,2)==="/*"){var g="/*";d+=2}else{var g=null;e&&l('"/*"')}if(g!==null){var i=[],j=d,k=d,m=e;e=!1;if(a.substr(d,2)==="*/"){var n="*/";d+=2}else{var n=null;e&&l('"*/"')}e=m;if(n===null)var o="";else{var o=null;d=k}if(o!==null){if(a.length>d){var p=a.charAt(d);d++}else{var p=null;e&&l("any character")}if(p!==null)var q=[o,p];else{var q=null;d=j}}else{var q=null;d=j}while(q!==null){i.push(q);var j=d,k=d,m=e;e=!1;if(a.substr(d,2)==="*/"){var n="*/";d+=2}else{var n=null;e&&l('"*/"')}e=m;if(n===null)var o="";else{var o=null;d=k}if(o!==null){if(a.length>d){var p=a.charAt(d);d++}else{var p=null;e&&l("any character")}if(p!==null)var q=[o,p];else{var q=null;d=j}}else{var q=null;d=j}}if(i!==null){if(a.substr(d,2)==="*/"){var r="*/";d+=2}else{var r=null;e&&l('"*/"')}if(r!==null)var s=[g,i,r];else{var s=null;d=f}}else{var s=null;d=f}}else{var s=null;d=f}return h[b]={nextPos:d,result:s},s}function bk(){var b="eol@"+d,c=h[b];if(c)return d=c.nextPos,c.result;var f=e;e=!1;if(a.substr(d,1)==="\n"){var g="\n";d+=1}else{var g=null;e&&l('"\\n"')}if(g!==null)var i=g;else{if(a.substr(d,2)==="\r\n"){var j="\r\n";d+=2}else{var j=null;e&&l('"\\r\\n"')}if(j!==null)var i=j;else{if(a.substr(d,1)==="\r"){var k="\r";d+=1}else{var k=null;e&&l('"\\r"')}if(k!==null)var i=k;else{if(a.substr(d,1)==="\u2028"){var m="\u2028";d+=1}else{var m=null;e&&l('"\\u2028"')}if(m!==null)var i=m;else{if(a.substr(d,1)==="\u2029"){var n="\u2029";d+=1}else{var n=null;e&&l('"\\u2029"')}if(n!==null)var i=n;else var i=null}}}}return e=f,e&&i===null&&l("end of line"),h[b]={nextPos:d,result:i},i}function bl(){var b="eolChar@"+d,c=h[b];if(c)return d=c.nextPos,c.result;if(a.substr(d).match(/^[\n\r\u2028\u2029]/)!==null){var f=a.charAt(d);d++}else{var f=null;e&&l("[\\n\\r\\u2028\\u2029]")}return h[b]={nextPos:d,result:f},f}function bm(){var b="whitespace@"+d,c=h[b];if(c)return d=c.nextPos,c.result;var f=e;e=!1;if(a.substr(d).match(/^[ 	\xA0\uFEFF\u1680\u180E\u2000-\u200A\u202F\u205F\u3000]/)!==null){var g=a.charAt(d);d++}else{var g=null;e&&l("[ \t\f\\xA0\\uFEFF\\u1680\\u180E\\u2000-\\u200A\\u202F\\u205F\\u3000]")}return e=f,e&&g===null&&l("whitespace"),h[b]={nextPos:d,result:g},g}function bn(){function b(a){a.sort();var b=null,c=[];for(var d=0;d<a.length;d++)a[d]!==b&&(c.push(a[d]),b=a[d]);switch(c.length){case 0:return"end of input";case 1:return c[0];default:return c.slice(0,c.length-1).join(", ")+" or "+c[c.length-1]}}var c=b(g),e=Math.max(d,f),h=e<a.length?k(a.charAt(e)):"end of input";return"Expected "+c+" but "+h+" found."}function bo(){var b=1,c=1,d=!1;for(var e=0;e<f;e++){var g=a.charAt(e);g==="\n"?(d||b++,c=1,d=!1):g==="\r"|g==="\u2028"||g==="\u2029"?(b++,c=1,d=!0):(c++,d=!1)}return{line:b,column:c}}var c={__:bg,action:v,and:D,braced:w,bracketDelimitedCharacter:W,choice:p,"class":T,classCharacter:V,classCharacterRange:U,colon:A,comment:bh,digit:bb,dot:K,doubleQuotedCharacter:O,doubleQuotedLiteral:N,eol:bk,eolChar:bl,eolEscapeSequence:ba,equals:z,grammar:m,hexDigit:bc,hexEscapeSequence:$,identifier:L,initializer:n,labeled:r,letter:bd,literal:M,lowerCaseLetter:be,lparen:I,multiLineComment:bj,nonBraceCharacter:y,nonBraceCharacters:x,not:E,plus:H,prefixed:s,primary:u,question:F,rparen:J,rule:o,semicolon:B,sequence:q,simpleBracketDelimitedCharacter:X,simpleDoubleQuotedCharacter:P,simpleEscapeSequence:Y,simpleSingleQuotedCharacter:S,singleLineComment:bi,singleQuotedCharacter:R,singleQuotedLiteral:Q,slash:C,star:G,suffixed:t,unicodeEscapeSequence:_,upperCaseLetter:bf,whitespace:bm,zeroEscapeSequence:Z};if(b!==undefined){if(c[b]===undefined)throw new Error("Invalid rule name: "+k(b)+".")}else b="grammar";var d=0,e=!0,f=0,g=[],h={},bp=c[b]();if(bp===null||d!==a.length){var bq=bo();throw new this.SyntaxError(bn(),bq.line,bq.column)}return bp},toSource:function(){return this._source}};return a.SyntaxError=function(a,b,c){this.name="SyntaxError",this.message=a,this.line=b,this.column=c},a.SyntaxError.prototype=Error.prototype,a}(),PEG.compiler={compile:function(ast){var CHECK_NAMES=["missingReferencedRules","leftRecursion"],PASS_NAMES=["proxyRules"];for(var i=0;i<CHECK_NAMES.length;i++)this.checks[CHECK_NAMES[i]](ast);for(var i=0;i<PASS_NAMES.length;i++)ast=this.passes[PASS_NAMES[i]](ast);var source=this.emitter(ast),result=eval(source);return result._source=source,result}},PEG.compiler.checks={missingReferencedRules:function(a){function b(){}function c(a){e(a.expression)}function d(a){return function(b){each(b[a],e)}}var e=buildNodeVisitor({grammar:function(a){for(var b in a.rules)e(a.rules[b])},rule:c,choice:d("alternatives"),sequence:d("elements"),labeled:c,simple_and:c,simple_not:c,semantic_and:b,semantic_not:b,optional:c,zero_or_more:c,one_or_more:c,action:c,rule_ref:function(b){if(a.rules[b.name]===undefined)throw new PEG.GrammarError('Referenced rule "'+b.name+'" does not exist.')},literal:b,any:b,"class":b});e(a)},leftRecursion:function(a){function b(){}function c(a,b){d(a.expression,b)}var d=buildNodeVisitor({grammar:function(a,b){for(var c in a.rules)d(a.rules[c],b)},rule:function(a,b){d(a.expression,b.concat(a.name))},choice:function(a,b){each(a.alternatives,function(a){d(a,b)})},sequence:function(a,b){a.elements.length>0&&d(a.elements[0],b)},labeled:c,simple_and:c,simple_not:c,semantic_and:b,semantic_not:b,optional:c,zero_or_more:c,one_or_more:c,action:c,rule_ref:function(b,c){if(contains(c,b.name))throw new PEG.GrammarError('Left recursion detected for rule "'+b.name+'".');d(a.rules[b.name],c)},literal:b,any:b,"class":b});d(a,[])}},PEG.compiler.passes={proxyRules:function(a){function b(a){return a.type==="rule"&&a.expression.type==="rule_ref"}function c(a,b,c){function d(){}function e(a,b,c){g(a.expression,b,c)}function f(a){return function(b,c,d){each(b[a],function(a){g(a,c,d)})}}var g=buildNodeVisitor({grammar:function(a,b,c){for(var d in a.rules)
    2. 

  2. g(a.rules[d],b,c)},rule:e,choice:f("alternatives"),sequence:f("elements"),labeled:e,simple_and:e,simple_not:e,semantic_and:d,semantic_not:d,optional:e,zero_or_more:e,one_or_more:e,action:e,rule_ref:function(a,b,c){a.name===b&&(a.name=c)},literal:d,any:d,"class":d});g(a,b,c)}for(var d in a.rules)b(a.rules[d])&&(c(a,a.rules[d].name,a.rules[d].expression.name),d===a.startRule&&(a.startRule=a.rules[d].expression.name),delete a.rules[d]);return a}},PEG.compiler.emitter=function(a){function b(){function a(a){return map(a,function(a){return a.replace(/\$\{([a-zA-Z_][a-zA-Z0-9_]*)(\|([a-zA-Z_][a-zA-Z0-9_]*))?\}/g,function(a,b,c,e){var f=d[b];if(f===undefined)throw new Error('Undefined variable: "'+b+'".');if(e!==undefined&&e!=""){if(e==="string")return quote(f);throw new Error('Unrecognized filter: "'+e+'".')}return f})})}function b(a){return map(a,function(a){if(!/\n/.test(a))return a;var b=a.match(/^\s*/)[0],c=a.split("\n"),d=[c[0]].concat(map(c.slice(1),function(a){return b+a}));return d.join("\n")})}var c=Array.prototype.slice.call(arguments),d=c[c.length-1]instanceof Object?c.pop():{};return b(a(c)).join("\n")}var c={_counters:{},next:function(a){return this._counters[a]=this._counters[a]||0,a+this._counters[a]++},reset:function(){this._counters={}}},d=buildNodeVisitor({grammar:function(a){var c=a.initializer!==null?d(a.initializer):"",e=[];for(var f in a.rules)e.push(quote(f)+": parse_"+f);e.sort();var g=[];for(var f in a.rules)g.push(d(a.rules[f]));return b("(function(){","  /* Generated by PEG.js 0.6.2 (http://pegjs.majda.cz/). */","  ","  var result = {","    /*","     * Parses the input with a generated parser. If the parsing is successfull,","     * returns a value explicitly or implicitly specified by the grammar from","     * which the parser was generated (see |PEG.buildParser|). If the parsing is","     * unsuccessful, throws |PEG.parser.SyntaxError| describing the error.","     */","    parse: function(input, startRule) {","      var parseFunctions = {","        ${parseFunctionTableItems}","      };","      ","      if (startRule !== undefined) {","        if (parseFunctions[startRule] === undefined) {",'          throw new Error("Invalid rule name: " + quote(startRule) + ".");',"        }","      } else {","        startRule = ${startRule|string};","      }","      ","      var pos = 0;","      var reportMatchFailures = true;","      var rightmostMatchFailuresPos = 0;","      var rightmostMatchFailuresExpected = [];","      var cache = {};","      ","      function padLeft(input, padding, length) {","        var result = input;","        ","        var padLength = length - input.length;","        for (var i = 0; i < padLength; i++) {","          result = padding + result;","        }","        ","        return result;","      }","      ","      function escape(ch) {","        var charCode = ch.charCodeAt(0);","        ","        if (charCode <= 0xFF) {","          var escapeChar = 'x';","          var length = 2;","        } else {","          var escapeChar = 'u';","          var length = 4;","        }","        ","        return '\\\\' + escapeChar + padLeft(charCode.toString(16).toUpperCase(), '0', length);","      }","      ","      function quote(s) {","        /*","         * ECMA-262, 5th ed., 7.8.4: All characters may appear literally in a","         * string literal except for the closing quote character, backslash,","         * carriage return, line separator, paragraph separator, and line feed.","         * Any character may appear in the form of an escape sequence.","         */","        return '\"' + s","          .replace(/\\\\/g, '\\\\\\\\')            // backslash","          .replace(/\"/g, '\\\\\"')              // closing quote character","          .replace(/\\r/g, '\\\\r')             // carriage return","          .replace(/\\n/g, '\\\\n')             // line feed","          .replace(/[\\x80-\\uFFFF]/g, escape) // non-ASCII characters","          + '\"';","      }","      ","      function matchFailed(failure) {","        if (pos < rightmostMatchFailuresPos) {","          return;","        }","        ","        if (pos > rightmostMatchFailuresPos) {","          rightmostMatchFailuresPos = pos;","          rightmostMatchFailuresExpected = [];","        }","        ","        rightmostMatchFailuresExpected.push(failure);","      }","      ","      ${parseFunctionDefinitions}","      ","      function buildErrorMessage() {","        function buildExpected(failuresExpected) {","          failuresExpected.sort();","          ","          var lastFailure = null;","          var failuresExpectedUnique = [];","          for (var i = 0; i < failuresExpected.length; i++) {","            if (failuresExpected[i] !== lastFailure) {","              failuresExpectedUnique.push(failuresExpected[i]);","              lastFailure = failuresExpected[i];","            }","          }","          ","          switch (failuresExpectedUnique.length) {","            case 0:","              return 'end of input';","            case 1:","              return failuresExpectedUnique[0];","            default:","              return failuresExpectedUnique.slice(0, failuresExpectedUnique.length - 1).join(', ')","                + ' or '","                + failuresExpectedUnique[failuresExpectedUnique.length - 1];","          }","        }","        ","        var expected = buildExpected(rightmostMatchFailuresExpected);","        var actualPos = Math.max(pos, rightmostMatchFailuresPos);","        var actual = actualPos < input.length","          ? quote(input.charAt(actualPos))","          : 'end of input';","        ","        return 'Expected ' + expected + ' but ' + actual + ' found.';","      }","      ","      function computeErrorPosition() {","        /*","         * The first idea was to use |String.split| to break the input up to the","         * error position along newlines and derive the line and column from","         * there. However IE's |split| implementation is so broken that it was","         * enough to prevent it.","         */","        ","        var line = 1;","        var column = 1;","        var seenCR = false;","        ","        for (var i = 0; i <  rightmostMatchFailuresPos; i++) {","          var ch = input.charAt(i);","          if (ch === '\\n') {","            if (!seenCR) { line++; }","            column = 1;","            seenCR = false;","          } else if (ch === '\\r' | ch === '\\u2028' || ch === '\\u2029') {","            line++;","            column = 1;","            seenCR = true;","          } else {","            column++;","            seenCR = false;","          }","        }","        ","        return { line: line, column: column };","      }","      ","      ${initializerCode}","      ","      var result = parseFunctions[startRule]();","      ","      /*","       * The parser is now in one of the following three states:","       *","       * 1. The parser successfully parsed the whole input.","       *","       *    - |result !== null|","       *    - |pos === input.length|","       *    - |rightmostMatchFailuresExpected| may or may not contain something","       *","       * 2. The parser successfully parsed only a part of the input.","       *","       *    - |result !== null|","       *    - |pos < input.length|","       *    - |rightmostMatchFailuresExpected| may or may not contain something","       *","       * 3. The parser did not successfully parse any part of the input.","       *","       *   - |result === null|","       *   - |pos === 0|","       *   - |rightmostMatchFailuresExpected| contains at least one failure","       *","       * All code following this comment (including called functions) must","       * handle these states.","       */","      if (result === null || pos !== input.length) {","        var errorPosition = computeErrorPosition();","        throw new this.SyntaxError(","          buildErrorMessage(),","          errorPosition.line,","          errorPosition.column","        );","      }","      ","      return result;","    },","    ","    /* Returns the parser source code. */","    toSource: function() { return this._source; }","  };","  ","  /* Thrown when a parser encounters a syntax error. */","  ","  result.SyntaxError = function(message, line, column) {","    this.name = 'SyntaxError';","    this.message = message;","    this.line = line;","    this.column = column;","  };","  ","  result.SyntaxError.prototype = Error.prototype;","  ","  return result;","})()",{initializerCode:c,parseFunctionTableItems:e.join(",\n"),parseFunctionDefinitions:g.join("\n\n"),startRule:a.startRule})},initializer:function(a){return a.code},rule:function(a){c.reset();var e=c.next("result");if(a.displayName!==null)var f=b("var savedReportMatchFailures = reportMatchFailures;","reportMatchFailures = false;"),g=b("reportMatchFailures = savedReportMatchFailures;"),h=b("if (reportMatchFailures && ${resultVar} === null) {","  matchFailed(${displayName|string});","}",{displayName:a.displayName,resultVar:e});else var f="",g="",h="";return b("function parse_${name}() {","  var cacheKey = '${name}@' + pos;","  var cachedResult = cache[cacheKey];","  if (cachedResult) {","    pos = cachedResult.nextPos;","    return cachedResult.result;","  }","  ","  ${setReportMatchFailuresCode}","  ${code}","  ${restoreReportMatchFailuresCode}","  ${reportMatchFailureCode}","  ","  cache[cacheKey] = {","    nextPos: pos,","    result:  ${resultVar}","  };","  return ${resultVar};","}",{name:a.name,setReportMatchFailuresCode:f,restoreReportMatchFailuresCode:g,reportMatchFailureCode:h,code:d(a.expression,e),resultVar:e})},choice:function(a,e){var f=b("var ${resultVar} = null;",{resultVar:e});for(var g=a.alternatives.length-1;g>=0;g--){var h=c.next("result");f=b("${alternativeCode}","if (${alternativeResultVar} !== null) {","  var ${resultVar} = ${alternativeResultVar};","} else {","  ${code};","}",{alternativeCode:d(a.alternatives[g],h),alternativeResultVar:h,code:f,resultVar:e})}return f},sequence:function(a,e){var f=c.next("savedPos"),g=map(a.elements,function(){return c.next("result")}),h=b("var ${resultVar} = ${elementResultVarArray};",{resultVar:e,elementResultVarArray:"["+g.join(", ")+"]"});for(var i=a.elements.length-1;i>=0;i--)h=b("${elementCode}","if (${elementResultVar} !== null) {","  ${code}","} else {","  var ${resultVar} = null;","  pos = ${savedPosVar};","}",{elementCode:d(a.elements[i],g[i]),elementResultVar:g[i],code:h,savedPosVar:f,resultVar:e});return b("var ${savedPosVar} = pos;","${code}",{code:h,savedPosVar:f})},labeled:function(a,b){return d(a.expression,b)},simple_and:function(a,e){var f=c.next("savedPos"),g=c.next("savedReportMatchFailuresVar"),h=c.next("result");return b("var ${savedPosVar} = pos;","var ${savedReportMatchFailuresVar} = reportMatchFailures;","reportMatchFailures = false;","${expressionCode}","reportMatchFailures = ${savedReportMatchFailuresVar};","if (${expressionResultVar} !== null) {","  var ${resultVar} = '';","  pos = ${savedPosVar};","} else {","  var ${resultVar} = null;","}",{expressionCode:d(a.expression,h),expressionResultVar:h,savedPosVar:f,savedReportMatchFailuresVar:g,resultVar:e})},simple_not:function(a,e){var f=c.next("savedPos"),g=c.next("savedReportMatchFailuresVar"),h=c.next("result");return b("var ${savedPosVar} = pos;","var ${savedReportMatchFailuresVar} = reportMatchFailures;","reportMatchFailures = false;","${expressionCode}","reportMatchFailures = ${savedReportMatchFailuresVar};","if (${expressionResultVar} === null) {","  var ${resultVar} = '';","} else {","  var ${resultVar} = null;","  pos = ${savedPosVar};","}",{expressionCode:d(a.expression,h),expressionResultVar:h,savedPosVar:f,savedReportMatchFailuresVar:g,resultVar:e})},semantic_and:function(a,c){return b("var ${resultVar} = (function() {${actionCode}})() ? '' : null;",{actionCode:a.code,resultVar:c})},semantic_not:function(a,c){return b("var ${resultVar} = (function() {${actionCode}})() ? null : '';",{actionCode:a.code,resultVar:c})},optional:function(a,e){var f=c.next("result");return b("${expressionCode}","var ${resultVar} = ${expressionResultVar} !== null ? ${expressionResultVar} : '';",{expressionCode:d(a.expression,f),expressionResultVar:f,resultVar:e})},zero_or_more:function(a,e){var f=c.next("result");return b("var ${resultVar} = [];","${expressionCode}","while (${expressionResultVar} !== null) {","  ${resultVar}.push(${expressionResultVar});","  ${expressionCode}","}",{expressionCode:d(a.expression,f),expressionResultVar:f,resultVar:e})},one_or_more:function(a,e){var f=c.next("result");return b("${expressionCode}","if (${expressionResultVar} !== null) {","  var ${resultVar} = [];","  while (${expressionResultVar} !== null) {","    ${resultVar}.push(${expressionResultVar});","    ${expressionCode}","  }","} else {","  var ${resultVar} = null;","}",{expressionCode:d(a.expression,f),expressionResultVar:f,resultVar:e})},action:function(a,e){var f=c.next("result"),g=c.next("result"),h=c.next("savedPos");if(a.expression.type==="sequence"){var i=[],j=[],k=a.expression.elements,l=k.length;for(var m=0;m<l;m++)k[m].type==="labeled"&&(i.push(k[m].label),j.push(f+"["+m+"]"))}else if(a.expression.type==="labeled")var i=[a.expression.label],j=[f];else var i=[],j=[];return b("var ${savedPosVar} = pos;","${expressionCode}","var ${actionResultVar} = ${expressionResultVar} !== null","  ? (function(${formalParams}) {${actionCode}})(${actualParams})","  : null;","if (${actionResultVar} !== null) {","  var ${resultVar} = ${actionResultVar};","} else {","  var ${resultVar} = null;","  pos = ${savedPosVar};","}",{expressionCode:d(a.expression,f),expressionResultVar:f,actionCode:a.code,actionResultVar:g,formalParams:i.join(", "),actualParams:j.join(", "),savedPosVar:h,resultVar:e})},rule_ref:function(a,c){return b("var ${resultVar} = ${ruleMethod}();",{ruleMethod:"parse_"+a.name,resultVar:c})},literal:function(a,c){return b("if (input.substr(pos, ${length}) === ${value|string}) {","  var ${resultVar} = ${value|string};","  pos += ${length};","} else {","  var ${resultVar} = null;","  if (reportMatchFailures) {","    matchFailed(${valueQuoted|string});","  }","}",{value:a.value,valueQuoted:quote(a.value),length:a.value.length,resultVar:c})},any:function(a,c){return b("if (input.length > pos) {","  var ${resultVar} = input.charAt(pos);","  pos++;","} else {","  var ${resultVar} = null;","  if (reportMatchFailures) {","    matchFailed('any character');","  }","}",{resultVar:c})},"class":function(a,c){if(a.parts.length>0)var d="/^["+(a.inverted?"^":"")+map(a.parts,function(a){return a instanceof Array?quoteForRegexpClass(a[0])+"-"+quoteForRegexpClass(a[1]):quoteForRegexpClass(a)}).join("")+"]/";else var d=a.inverted?"/^[\\S\\s]/":"/^(?!)/";return b("if (input.substr(pos).match(${regexp}) !== null) {","  var ${resultVar} = input.charAt(pos);","  pos++;","} else {","  var ${resultVar} = null;","  if (reportMatchFailures) {","    matchFailed(${rawText|string});","  }","}",{regexp:d,rawText:a.rawText,resultVar:c})}});return d(a)};if(typeof module=="object")module.exports=PEG;else if(typeof window=="object")window.PEG=PEG;else throw new Error('Can\'t export PEG library (no "module" nor "window" object detected).')})()
    3.