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peg-0.7.0.min.js

peg-0.7.0.min.js 45 KB
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  1. /*
    2. 

  2.  * PEG.js 0.7.0
    3. 

  3.  *
    4. 

  4.  * http://pegjs.majda.cz/
    5. 

  5.  *
    6. 

  6.  * Copyright (c) 2010-2012 David Majda
    7. 

  7.  * Licensend under the MIT license.
    8. 

  8.  */var PEG=function(undefined){function range(a,b){b===undefined&&(b=a,a=0);var c=new Array(Math.max(0,b-a));for(var d=0,e=a;e<b;d++,e++)c[d]=e;return c}function find(a,b){var c=a.length;for(var d=0;d<c;d++)if(b(a[d]))return a[d]}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],d)}function map(a,b){var c=[],d=a.length;for(var e=0;e<d;e++)c[e]=b(a[e],e);return c}function pluck(a,b){return map(a,function(a){return a[b]})}function keys(a){var b=[];for(var c in a)b.push(c);return b}function values(a){var b=[];for(var c in a)b.push(a[c]);return b}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),c,d;return b<=255?(c="x",d=2):(c="u",d=4),"\\"+c+padLeft(b.toString(16).toUpperCase(),"0",d)}function quote(a){return'"'+a.replace(/\\/g,"\\\\").replace(/"/g,'\\"').replace(/\x08/g,"\\b").replace(/\t/g,"\\t").replace(/\n/g,"\\n").replace(/\f/g,"\\f").replace(/\r/g,"\\r").replace(/[\x00-\x07\x0B\x0E-\x1F\x80-\uFFFF]/g,escape)+'"'}function quoteForRegexpClass(a){return a.replace(/\\/g,"\\\\").replace(/\//g,"\\/").replace(/\]/g,"\\]").replace(/-/g,"\\-").replace(/\0/g,"\\0").replace(/\t/g,"\\t").replace(/\n/g,"\\n").replace(/\v/g,"\\x0B").replace(/\f/g,"\\f").replace(/\r/g,"\\r").replace(/[\x01-\x08\x0E-\x1F\x80-\uFFFF]/g,escape)}function buildNodeVisitor(a){return function(b){return a[b.type].apply(null,arguments)}}function findRuleByName(a,b){return find(a.rules,function(a){return a.name===b})}var PEG={VERSION:"0.7.0",buildParser:function(a,b){return PEG.compiler.compile(PEG.parser.parse(a),b)}};return PEG.GrammarError=function(a){this.name="PEG.GrammarError",this.message=a},PEG.GrammarError.prototype=Error.prototype,PEG.parser=function(){function 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c=e.commands[b[b.length-1]].exit,c&&c(a),["}",[]]},stackOp:"pop"},block:{params:/^(.*)$/,compile:function(a,d,e){var f="__x",g="__n",h="__l",i="__i";return[f+'="'+b(d.substring(a.indentLevel()))+'";'+g+"=("+e[0]+').toString().split("\\n");'+h+"="+g+".length;"+"for("+i+"=0;"+i+"<"+h+";"+i+"++){"+g+"["+i+"]="+f+"+"+g+"["+i+']+"\\n";'+"}"+c(g+'.join("")'),[f,g,h,i]]},stackOp:"nop"}},template:function(b){function g(a,b){return a.atBOL=!1,[c(b),[]]}function h(a,b,c,d){var g,h,i;g=e.commands[c];if(!g)throw new Error("Unknown command: #"+c+".");h=g.params.exec(d);if(h===null)throw new Error("Invalid params for command #"+c+": "+d+".");return i=g.compile(a,b,h.slice(1)),f[g.stackOp](a.commandStack,c),a.atBOL=!0,i}var f={push:function(a,b){a.push(b)},replace:function(a,b){a[a.length-1]=b},pop:function(a){a.pop()},nop:function(){}},i={commandStack:[],atBOL:!0,indentLevel:function(){return e.indentStep*this.commandStack.length}},j="",k=["__p=[]"],l,m,n,o;for(l in e.commands)e.commands[l].init&&e.commands[l].init(i);while((m=/^([ \t]*)#([a-zA-Z_][a-zA-Z0-9_]*)(?:[ \t]+([^ \t\n][^\n]*))?[ \t]*(?:\n|$)|#\{([^}]*)\}/m.exec(b))!==null)j+=d(b,m.index,i),n=m[2]!==a&&m[2]!==""?h(i,m[1],m[2],m[3]||""):g(i,m[4]),j+=n[0],k=k.concat(n[1]),b=b.substring(m.index+m[0].length);j+=d(b,b.length,i);if(i.commandStack.length>0)throw new Error("Missing #end.");k.sort();for(o=0;o<k.length;o++)k[o]===k[o-1]&&k.splice(o--,1);return new Function("__v",["__v=__v||{};","var "+k.join(",")+";","with(__v){",j,'return __p.join("").replace(/^\\n+|\\n+$/g,"");};'].join(""))}};return e}(),d=function(){var a,b={},d={grammar:["(function(){","  /*","   * Generated by PEG.js 0.7.0.","   *","   * http://pegjs.majda.cz/","   */","  ","  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.","     *","     * For portability, we also escape escape all control and non-ASCII",'     * characters. Note that "\\0" and "\\v" escape sequences are not used',"     * because JSHint does not like the first and IE the second.","     */","     return '\"' + s","      .replace(/\\\\/g, '\\\\\\\\')  // backslash","      .replace(/\"/g, '\\\\\"')    // closing quote character","      .replace(/\\x08/g, '\\\\b') // backspace","      .replace(/\\t/g, '\\\\t')   // horizontal tab","      .replace(/\\n/g, '\\\\n')   // line feed","      .replace(/\\f/g, '\\\\f')   // form feed","      .replace(/\\r/g, '\\\\r')   // carriage return","      .replace(/[\\x00-\\x07\\x0B\\x0E-\\x1F\\x80-\\uFFFF]/g, escape)","      + '\"';","  }","  ","  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 = {","        #for rule in node.rules",'          #{string(rule.name) + ": parse_" + rule.name + (rule !== node.rules[node.rules.length - 1] ? "," : "")}',"        #end","      };","      ","      if (startRule !== undefined) {","        if (parseFunctions[startRule] === undefined) {",'          throw new Error("Invalid rule name: " + quote(startRule) + ".");',"        }","      } else {","        startRule = #{string(node.startRule)};","      }","      ",'      #{posInit("pos")};',"      var reportFailures = 0;",'      #{posInit("rightmostFailuresPos")};',"      var rightmostFailuresExpected = [];","      #if options.cache","        var cache = {};","      #end","      ","      function padLeft(input, padding, length) {","        var result = input;","        ","        var padLength = length - input.length;"
    9. 

  9. ,"        for (var i = 0; i < padLength; i++) {","          result = padding + result;","        }","        ","        return result;","      }","      ","      function escape(ch) {","        var charCode = ch.charCodeAt(0);","        var escapeChar;","        var length;","        ","        if (charCode <= 0xFF) {","          escapeChar = 'x';","          length = 2;","        } else {","          escapeChar = 'u';","          length = 4;","        }","        ","        return '\\\\' + escapeChar + padLeft(charCode.toString(16).toUpperCase(), '0', length);","      }","      ","      #if options.trackLineAndColumn","        function clone(object) {","          var result = {};","          for (var key in object) {","            result[key] = object[key];","          }","          return result;","        }","        ","        function advance(pos, n) {","          var endOffset = pos.offset + n;","          ","          for (var offset = pos.offset; offset < endOffset; offset++) {","            var ch = input.charAt(offset);",'            if (ch === "\\n") {',"              if (!pos.seenCR) { pos.line++; }","              pos.column = 1;","              pos.seenCR = false;",'            } else if (ch === "\\r" || ch === "\\u2028" || ch === "\\u2029") {',"              pos.line++;","              pos.column = 1;","              pos.seenCR = true;","            } else {","              pos.column++;","              pos.seenCR = false;","            }","          }","          ","          pos.offset += n;","        }","        ","      #end","      function matchFailed(failure) {",'        if (#{posOffset("pos")} < #{posOffset("rightmostFailuresPos")}) {',"          return;","        }","        ",'        if (#{posOffset("pos")} > #{posOffset("rightmostFailuresPos")}) {','          rightmostFailuresPos = #{posClone("pos")};',"          rightmostFailuresExpected = [];","        }","        ","        rightmostFailuresExpected.push(failure);","      }","      ","      #for rule in node.rules","        #block emit(rule)","        ","      #end","      ","      function cleanupExpected(expected) {","        expected.sort();","        ","        var lastExpected = null;","        var cleanExpected = [];","        for (var i = 0; i < expected.length; i++) {","          if (expected[i] !== lastExpected) {","            cleanExpected.push(expected[i]);","            lastExpected = expected[i];","          }","        }","        return cleanExpected;","      }","      ","      #if !options.trackLineAndColumn","        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 < Math.max(pos, rightmostFailuresPos); 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 };","        }","      #end","      ","      #if node.initializer","        #block emit(node.initializer)","      #end","      ","      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|",'       *    - |#{posOffset("pos")} === input.length|',"       *    - |rightmostFailuresExpected| may or may not contain something","       *","       * 2. The parser successfully parsed only a part of the input.","       *","       *    - |result !== null|",'       *    - |#{posOffset("pos")} < input.length|',"       *    - |rightmostFailuresExpected| may or may not contain something","       *","       * 3. The parser did not successfully parse any part of the input.","       *","       *   - |result === null|",'       *   - |#{posOffset("pos")} === 0|',"       *   - |rightmostFailuresExpected| contains at least one failure","       *","       * All code following this comment (including called functions) must","       * handle these states.","       */",'      if (result === null || #{posOffset("pos")} !== input.length) {','        var offset = Math.max(#{posOffset("pos")}, #{posOffset("rightmostFailuresPos")});',"        var found = offset < input.length ? input.charAt(offset) : null;","        #if options.trackLineAndColumn",'          var errorPosition = #{posOffset("pos")} > #{posOffset("rightmostFailuresPos")} ? pos : rightmostFailuresPos;',"        #else","          var errorPosition = computeErrorPosition();","        #end","        ","        throw new this.SyntaxError(","          cleanupExpected(rightmostFailuresExpected),","          found,","          offset,","          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(expected, found, offset, line, column) {","    function buildMessage(expected, found) {","      var expectedHumanized, foundHumanized;","      ","      switch (expected.length) {","        case 0:",'          expectedHumanized = "end of input";',"          break;","        case 1:","          expectedHumanized = expected[0];","          break;","        default:",'          expectedHumanized = expected.slice(0, expected.length - 1).join(", ")','            + " or "',"            + expected[expected.length - 1];","      }","      ",'      foundHumanized = found ? quote(found) : "end of input";',"      ",'      return "Expected " + expectedHumanized + " but " + foundHumanized + " found.";',"    }","    ",'    this.name = "SyntaxError";',"    this.expected = expected;","    this.found = found;","    this.message = buildMessage(expected, found);","    this.offset = offset;","    this.line = line;","    this.column = column;","  };","  ","  result.SyntaxError.prototype = Error.prototype;","  ","  return result;","})()"],rule:["function parse_#{node.name}() {","  #if options.cache",'    var cacheKey = "#{node.name}@" + #{posOffset("pos")};',"    var cachedResult = cache[cacheKey];","    if (cachedResult) {",'      pos = #{posClone("cachedResult.nextPos")};',"      return cachedResult.result;","    }","    ","  #end","  #if node.resultVars.length > 0",'    var #{node.resultVars.join(", ")};',"  #end","  #if node.posVars.length > 0",'    var #{node.posVars.join(", ")};',"  #end","  ","  #if node.displayName !== null","    reportFailures++;","  #end","  #block emit(node.expression)","  #if node.displayName !== null","    reportFailures--;","    if (reportFailures === 0 && #{node.resultVar} === null) {","      matchFailed(#{string(node.displayName)});","    }","  #end","  #if options.cache","    ","    cache[cacheKey] = {",'      nextPos: #{posClone("pos")},',"      result:  #{node.resultVar}","    };","  #end","  return #{node.resultVar};","}"],choice:["#block emit(alternative)","#block nextAlternativesCode"],"choice.next":["if (#{node.resultVar} === null) {","  #block code","}"],sequence:["#{posSave(node)};","#block code"],"sequence.iteration":["#block emit(element)","if (#{element.resultVar} !== null) {","  #block code","} else {","  #{node.resultVar} = null;","  #{posRestore(node)};","}"],"sequence.inner":['#{node.resultVar} = [#{pluck(node.elements, "resultVar").join(", ")}];'],simple_and:["#{posSave(node)};","reportFailures++;","#block emit(node.expression)","reportFailures--;","if (#{node.resultVar} !== null) {",'  #{node.resultVar} = "";',"  #{posRestore(node)};","} else {","  #{node.resultVar} = null;","}"],simple_not:["#{posSave(node)};","reportFailures++;","#block emit(node.expression)","reportFailures--;","if (#{node.resultVar} === null) {",'  #{node.resultVar} = "";',"} else {","  #{node.resultVar} = null;","  #{posRestore(node)};","}"],semantic_and:['#{node.resultVar} = (function(#{(options.trackLineAndColumn ? ["offset", "line", "column"] : ["offset"]).concat(keys(node.params)).join(", ")}) {#{node.code}})(#{(options.trackLineAndColumn ? ["pos.offset", "pos.line", "pos.column"] : ["pos"]).concat(values(node.params)).join(", ")}) ? "" : null;'],semantic_not:['#{node.resultVar} = (function(#{(options.trackLineAndColumn ? ["offset", "line", "column"] : ["offset"]).concat(keys(node.params)).join(", ")}) {#{node.code}})(#{(options.trackLineAndColumn ? ["pos.offset", "pos.line", "pos.column"] : ["pos"]).concat(values(node.params)).join(", ")}) ? null : "";'],optional:["#block emit(node.expression)",'#{node.resultVar} = #{node.resultVar} !== null ? #{node.resultVar} : "";'],zero_or_more:["#{node.resultVar} = [];","#block emit(node.expression)","while (#{node.expression.resultVar} !== null) {","  #{node.resultVar}.push(#{node.expression.resultVar});","  #block emit(node.expression)","}"],one_or_more:["#block emit(node.expression)","if (#{node.expression.resultVar} !== null) {","  #{node.resultVar} = [];","  while (#{node.expression.resultVar} !== null) {","    #{node.resultVar}.push(#{node.expression.resultVar});","    #block emit(node.expression)","  }","} else {","  #{node.resultVar} = null;","}"],action:["#{posSave(node)};","#block emit(node.expression)","if (#{node.resultVar} !== null) {",'  #{node.resultVar} = (function(#{(options.trackLineAndColumn ? ["offset", "line", "column"] : ["offset"]).concat(keys(node.params)).join(", ")}) {#{node.code}})(#{(options.trackLineAndColumn ? [node.posVar + ".offset", node.posVar + ".line", node.posVar + ".column"] : [node.posVar]).concat(values(node.params)).join(", ")});',"}","if (#{node.resultVar} === null) {","  #{posRestore(node)};","}"],rule_ref:["#{node.resultVar} = parse_#{node.name}();"],literal:["#if node.value.length === 0",'  #{node.resultVar} = "";',"#else","  #if !node.ignoreCase","    #if node.value.length === 1",'      if (input.charCodeAt(#{posOffset("pos")}) === #{node.value.charCodeAt(0)}) {',"    #else",'      if (input.substr(#{posOffset("pos")}, #{node.value.length}) === #{string(node.value)}) {',"    #end","  #else",'    if (input.substr(#{posOffset("pos")}, #{node.value.length}).toLowerCase() === #{string(node.value.toLowerCase())}) {',"  #end","    #if !node.ignoreCase","      #{node.resultVar} = #{string(node.value)};","    #else",'      #{node.resultVar} = input.substr(#{posOffset("pos")}, #{node.value.length});',"    #end","    #{posAdvance(node.value.length)};","  } else {","    #{node.resultVar} = null;","    if (reportFailures === 0) {","      matchFailed(#{string(string(node.value))});","    }","  }","#end"],any:['if (input.length > #{posOffset("pos")}) {','  #{node.resultVar} = input.charAt(#{posOffset("pos")});',"  #{posAdvance(1)};","} else {","  #{node.resultVar} = null;","  if (reportFailures === 0) {",'    matchFailed("any character");',"  }","}"],"class":['if (#{regexp}.test(input.charAt(#{posOffset("pos")}))) {','  #{node.resultVar} = input.charAt(#{posOffset("pos")});',"  #{posAdvance(1)};","} else {","  #{node.resultVar} = null;","  if (reportFailures === 0) {","    matchFailed(#{string(node.rawText)});","  }","}"]};for(a in d)b[a]=c.template(d[a].join("\n"));return b}(),g=buildNodeVisitor({grammar:f("grammar"),initializer:function(a){return a.code},rule:f("rule"),choice:function(a){var b,c;for(var d=a.alternatives.length-1;d>=0;d--)c=d!==a.alternatives.length-1?e("choice.next",{node:a,code:b}):"",b=e("choice",{alternative:a.alternatives[d],nextAlternativesCode:c});return b},sequence:function(a){var b=e("sequence.inner",{node:a});for(var c=a.elements.length-1;c>=0;c--)b=e("sequence.iteration",{node:a,element:a.elements[c],code:b});return e("sequence",{node:a,code:b})},labeled:function(a){return g(a.expression)},simple_and:f("simple_and"),simple_not:f("simple_not"),semantic_and:f("semantic_and"),semantic_not:f("semantic_not"),optional:f("optional"),zero_or_more:f("zero_or_more"),one_or_more:f("one_or_more"),action:f("action"),rule_ref:f("rule_ref"),literal:f("literal"),any:f("any"),"class":function(a){var b;return a.parts.length>0?b="/^["+(a.inverted?"^":"")+map(a.parts,function(a){return a instanceof Array?quoteForRegexpClass(a[0])+"-"+quoteForRegexpClass(a[1]):quoteForRegexpClass(a)}).join("")+"]/"+(a.ignoreCase?"i":""):b=a.inverted?"/^[\\S\\s]/":"/^(?!)/",e("class",{node:a,regexp:b})}});return g(a)},PEG}();typeof module!="undefined"&&(module.exports=PEG);
    10.