text: /* parser generated by jison 0.4.18 */
  /*
    Returns a Parser object of the following structure:
  
    Parser: {
      yy: {}
    }
  
    Parser.prototype: {
      yy: {},
      trace: function(),
      symbols_: {associative list: name ==> number},
      terminals_: {associative list: number ==> name},
      productions_: [...],
      performAction: function anonymous(yytext, yyleng, yylineno, yy, yystate, $$, _$),
      table: [...],
      defaultActions: {...},
      parseError: function(str, hash),
      parse: function(input),
  
      lexer: {
          EOF: 1,
          parseError: function(str, hash),
          setInput: function(input),
          input: function(),
          unput: function(str),
          more: function(),
          less: function(n),
          pastInput: function(),
          upcomingInput: function(),
          showPosition: function(),
          test_match: function(regex_match_array, rule_index),
          next: function(),
          lex: function(),
          begin: function(condition),
          popState: function(),
          _currentRules: function(),
          topState: function(),
          pushState: function(condition),
  
          options: {
              ranges: boolean           (optional: true ==> token location info will include a .range[] member)
              flex: boolean             (optional: true ==> flex-like lexing behaviour where the rules are tested exhaustively to find the longest match)
              backtrack_lexer: boolean  (optional: true ==> lexer regexes are tested in order and for each matching regex the action code is invoked; the lexer terminates the scan when a token is returned by the action code)
          },
  
          performAction: function(yy, yy_, $avoiding_name_collisions, YY_START),
          rules: [...],
          conditions: {associative list: name ==> set},
      }
    }
  
  
    token location info (@$, _$, etc.): {
      first_line: n,
      last_line: n,
      first_column: n,
      last_column: n,
      range: [start_number, end_number]       (where the numbers are indexes into the input string, regular zero-based)
    }
  
  
    the parseError function receives a 'hash' object with these members for lexer and parser errors: {
      text:        (matched text)
      token:       (the produced terminal token, if any)
      line:        (yylineno)
    }
    while parser (grammar) errors will also provide these members, i.e. parser errors deliver a superset of attributes: {
      loc:         (yylloc)
      expected:    (string describing the set of expected tokens)
      recoverable: (boolean: TRUE when the parser has a error recovery rule available for this particular error)
    }
  */
  var XPathDesc = (function(){
  var o=function(k,v,o,l){for(o=o||{},l=k.length;l--;o[k[l]]=v);return o},$V0=[1,6],$V1=[1,7],$V2=[1,9],$V3=[1,11],$V4=[1,12],$V5=[1,13],$V6=[1,14],$V7=[1,15],$V8=[2,4],$V9=[1,18],$Va=[5,8],$Vb=[15,17,21,24,25,26],$Vc=[2,11],$Vd=[5,8,10,11],$Ve=[1,37],$Vf=[1,29],$Vg=[1,28],$Vh=[1,31],$Vi=[1,32],$Vj=[1,33],$Vk=[1,34],$Vl=[1,35],$Vm=[1,36],$Vn=[1,44],$Vo=[1,42],$Vp=[1,43],$Vq=[1,45],$Vr=[1,46],$Vs=[1,47],$Vt=[1,48],$Vu=[1,49],$Vv=[1,50],$Vw=[1,51],$Vx=[1,52],$Vy=[1,53],$Vz=[1,54],$VA=[20,23,24,27,28,29,30,31,32,33,34,35,36,37,38],$VB=[20,23,27,28,31,32,33,34,35,36,37,38],$VC=[20,23,31,32,33,34,35,36,37,38];
  var parser = {trace: function trace () { },
  yy: {},
  symbols_: {"error":2,"START":3,"LCONSULTAS":4,"EOF":5,"CONSULTA":6,"LCP":7,"vertical":8,"OPPATH":9,"dobleslash":10,"slash":11,"RUTA":12,"ENODO":13,"RP":14,"arroba":15,"NODO":16,"TKid":17,"lcorchete":18,"E":19,"rcorchete":20,"Rnode":21,"lparen":22,"rparen":23,"por":24,"dot":25,"dobledot":26,"mas":27,"menos":28,"div":29,"mod":30,"menor":31,"menorigual":32,"mayor":33,"mayorigual":34,"igual":35,"noigual":36,"and":37,"or":38,"PRIMITIVO":39,"TKinteger":40,"TKdouble":41,"TKchar":42,"TKstring":43,"Rlast":44,"Rposition":45,"$accept":0,"$end":1},
  terminals_: {2:"error",5:"EOF",8:"vertical",10:"dobleslash",11:"slash",15:"arroba",17:"TKid",18:"lcorchete",20:"rcorchete",21:"Rnode",22:"lparen",23:"rparen",24:"por",25:"dot",26:"dobledot",27:"mas",28:"menos",29:"div",30:"mod",31:"menor",32:"menorigual",33:"mayor",34:"mayorigual",35:"igual",36:"noigual",37:"and",38:"or",40:"TKinteger",41:"TKdouble",42:"TKchar",43:"TKstring",44:"Rlast",45:"Rposition"},
  productions_: [0,[3,2],[4,2],[7,3],[7,0],[9,1],[9,1],[6,2],[6,1],[12,2],[14,3],[14,0],[13,2],[13,1],[16,4],[16,1],[16,3],[16,1],[16,1],[16,1],[19,3],[19,3],[19,3],[19,3],[19,3],[19,3],[19,3],[19,3],[19,3],[19,3],[19,3],[19,3],[19,3],[19,2],[19,3],[19,1],[39,1],[39,1],[39,1],[39,1],[39,3],[39,3],[39,1]],
  performAction: function anonymous(yytext, yyleng, yylineno, yy, yystate /* action[1] */, $$ /* vstack */, _$ /* lstack */) {
  /* this == yyval */
  
  var $0 = $$.length - 1;
  switch (yystate) {
  case 1:
   
                                  console.log('Analisis XPath Descendente Finalizado'); 
                                  this.$ = $$[$0-1]; return this.$;
                              
  break;
  case 2: case 3: case 9:
   this.$ = [$$[$0-1]]; this.$ = this.$.concat($$[$0]); 
  break;
  case 4:
   this.$ = []; 
  break;
  case 5:
   this.$ = 'full'; 
  break;
  case 6:
   this.$ = 'local'; 
  break;
  case 7:
   $$[$0][0].ambito = $$[$0-1]; this.$ = $$[$0]; 
  break;
  case 8: case 13: case 35:
   this.$ = $$[$0]; 
  break;
  case 10:
   $$[$0-1].ambito = $$[$0-2]; this.$ = [$$[$0-1]]; this.$ = this.$.concat($$[$0]); 
  break;
  case 11:
   this.$ = [] 
  break;
  case 12:
   $$[$0].atributo = true; this.$ = $$[$0]; 
  break;
  case 14:
   
                                      var aux = new ObjetoXPath($$[$0-3].toString());
                                      aux.setExpresion($$[$0-1]);
                                      this.$ = aux;
                                  
  break;
  case 15: case 17: case 18: case 19:
   this.$ = new ObjetoXPath($$[$0]); 
  break;
  case 16:
   this.$ = new ObjetoXPath($$[$0-2]+'()'); 
  break;
  case 20:
   this.$ = new Suma($$[$0-2],$$[$0],_$[$0-1].first_line,_$[$0-1].first_column); 
  break;
  case 21:
   this.$ = new Resta($$[$0-2],$$[$0],_$[$0-1].first_line,_$[$0-1].first_column); 
  break;
  case 22:
   this.$ = new Multiplicacion($$[$0-2],$$[$0],_$[$0-1].first_line,_$[$0-1].first_column); 
  break;
  case 23:
   this.$ = new Division($$[$0-2],$$[$0],_$[$0-1].first_line,_$[$0-1].first_column); 
  break;
  case 24:
   this.$ = new Modulo($$[$0-2],$$[$0],_$[$0-1].first_line,_$[$0-1].first_column); 
  break;
  case 33:
   
                                      var men = new Literal(0,'0');
                                      this.$ = new Resta(men,$$[$0],_$[$0-1].first_line,_$[$0-1].first_column);
                                  
  break;
  case 34:
   this.$ = $$[$0-1]; 
  break;
  case 36:
   this.$ = new Literal(0,$$[$0].toString()); 
  break;
  case 37:
   this.$ = new Literal(1,$$[$0].toString()); 
  break;
  case 38:
   this.$ = new Literal(2,$$[$0].toString()); 
  break;
  case 39:
   this.$ = new Literal(3,$$[$0].toString()); 
  break;
  case 40: case 41:
   this.$ = new Literal(6,$$[$0-2].toString()+'()'); 
  break;
  case 42:
   this.$ = new Id(5,$$[$0].toString()); 
  break;
  }
  },
  table: [{3:1,4:2,6:3,9:4,10:$V0,11:$V1,12:5,13:8,15:$V2,16:10,17:$V3,21:$V4,24:$V5,25:$V6,26:$V7},{1:[3]},{5:[1,16]},{5:$V8,7:17,8:$V9},{12:19,13:8,15:$V2,16:10,17:$V3,21:$V4,24:$V5,25:$V6,26:$V7},o($Va,[2,8]),o($Vb,[2,5]),o($Vb,[2,6]),o($Va,$Vc,{14:20,9:21,10:$V0,11:$V1}),{16:22,17:$V3,21:$V4,24:$V5,25:$V6,26:$V7},o($Vd,[2,13]),o($Vd,[2,15],{18:[1,23]}),{22:[1,24]},o($Vd,[2,17]),o($Vd,[2,18]),o($Vd,[2,19]),{1:[2,1]},{5:[2,2]},{6:25,9:4,10:$V0,11:$V1,12:5,13:8,15:$V2,16:10,17:$V3,21:$V4,24:$V5,25:$V6,26:$V7},o($Va,[2,7]),o($Va,[2,9]),{13:26,15:$V2,16:10,17:$V3,21:$V4,24:$V5,25:$V6,26:$V7},o($Vd,[2,12]),{17:$Ve,19:27,22:$Vf,28:$Vg,39:30,40:$Vh,41:$Vi,42:$Vj,43:$Vk,44:$Vl,45:$Vm},{23:[1,38]},{5:$V8,7:39,8:$V9},o($Va,$Vc,{9:21,14:40,10:$V0,11:$V1}),{20:[1,41],24:$Vn,27:$Vo,28:$Vp,29:$Vq,30:$Vr,31:$Vs,32:$Vt,33:$Vu,34:$Vv,35:$Vw,36:$Vx,37:$Vy,38:$Vz},{17:$Ve,19:55,22:$Vf,28:$Vg,39:30,40:$Vh,41:$Vi,42:$Vj,43:$Vk,44:$Vl,45:$Vm},{17:$Ve,19:56,22:$Vf,28:$Vg,39:30,40:$Vh,41:$Vi,42:$Vj,43:$Vk,44:$Vl,45:$Vm},o($VA,[2,35]),o($VA,[2,36]),o($VA,[2,37]),o($VA,[2,38]),o($VA,[2,39]),{22:[1,57]},{22:[1,58]},o($VA,[2,42]),o($Vd,[2,16]),{5:[2,3]},o($Va,[2,10]),o($Vd,[2,14]),{17:$Ve,19:59,22:$Vf,28:$Vg,39:30,40:$Vh,41:$Vi,42:$Vj,43:$Vk,44:$Vl,45:$Vm},{17:$Ve,19:60,22:$Vf,28:$Vg,39:30,40:$Vh,41:$Vi,42:$Vj,43:$Vk,44:$Vl,45:$Vm},{17:$Ve,19:61,22:$Vf,28:$Vg,39:30,40:$Vh,41:$Vi,42:$Vj,43:$Vk,44:$Vl,45:$Vm},{17:$Ve,19:62,22:$Vf,28:$Vg,39:30,40:$Vh,41:$Vi,42:$Vj,43:$Vk,44:$Vl,45:$Vm},{17:$Ve,19:63,22:$Vf,28:$Vg,39:30,40:$Vh,41:$Vi,42:$Vj,43:$Vk,44:$Vl,45:$Vm},{17:$Ve,19:64,22:$Vf,28:$Vg,39:30,40:$Vh,41:$Vi,42:$Vj,43:$Vk,44:$Vl,45:$Vm},{17:$Ve,19:65,22:$Vf,28:$Vg,39:30,40:$Vh,41:$Vi,42:$Vj,43:$Vk,44:$Vl,45:$Vm},{17:$Ve,19:66,22:$Vf,28:$Vg,39:30,40:$Vh,41:$Vi,42:$Vj,43:$Vk,44:$Vl,45:$Vm},{17:$Ve,19:67,22:$Vf,28:$Vg,39:30,40:$Vh,41:$Vi,42:$Vj,43:$Vk,44:$Vl,45:$Vm},{17:$Ve,19:68,22:$Vf,28:$Vg,39:30,40:$Vh,41:$Vi,42:$Vj,43:$Vk,44:$Vl,45:$Vm},{17:$Ve,19:69,22:$Vf,28:$Vg,39:30,40:$Vh,41:$Vi,42:$Vj,43:$Vk,44:$Vl,45:$Vm},{17:$Ve,19:70,22:$Vf,28:$Vg,39:30,40:$Vh,41:$Vi,42:$Vj,43:$Vk,44:$Vl,45:$Vm},{17:$Ve,19:71,22:$Vf,28:$Vg,39:30,40:$Vh,41:$Vi,42:$Vj,43:$Vk,44:$Vl,45:$Vm},o($VA,[2,33]),{23:[1,72],24:$Vn,27:$Vo,28:$Vp,29:$Vq,30:$Vr,31:$Vs,32:$Vt,33:$Vu,34:$Vv,35:$Vw,36:$Vx,37:$Vy,38:$Vz},{23:[1,73]},{23:[1,74]},o($VB,[2,20],{24:$Vn,29:$Vq,30:$Vr}),o($VB,[2,21],{24:$Vn,29:$Vq,30:$Vr}),o($VA,[2,22]),o($VA,[2,23]),o($VA,[2,24]),o($VC,[2,25],{24:$Vn,27:$Vo,28:$Vp,29:$Vq,30:$Vr}),o($VC,[2,26],{24:$Vn,27:$Vo,28:$Vp,29:$Vq,30:$Vr}),o($VC,[2,27],{24:$Vn,27:$Vo,28:$Vp,29:$Vq,30:$Vr}),o($VC,[2,28],{24:$Vn,27:$Vo,28:$Vp,29:$Vq,30:$Vr}),o($VC,[2,29],{24:$Vn,27:$Vo,28:$Vp,29:$Vq,30:$Vr}),o($VC,[2,30],{24:$Vn,27:$Vo,28:$Vp,29:$Vq,30:$Vr}),o([20,23,37,38],[2,31],{24:$Vn,27:$Vo,28:$Vp,29:$Vq,30:$Vr,31:$Vs,32:$Vt,33:$Vu,34:$Vv,35:$Vw,36:$Vx}),o([20,23,38],[2,32],{24:$Vn,27:$Vo,28:$Vp,29:$Vq,30:$Vr,31:$Vs,32:$Vt,33:$Vu,34:$Vv,35:$Vw,36:$Vx,37:$Vy}),o($VA,[2,34]),o($VA,[2,40]),o($VA,[2,41])],
  defaultActions: {16:[2,1],17:[2,2],39:[2,3]},
  parseError: function parseError (str, hash) {
      if (hash.recoverable) {
          this.trace(str);
      } else {
          var error = new Error(str);
          error.hash = hash;
          throw error;
      }
  },
  parse: function parse(input) {
      var self = this, stack = [0], tstack = [], vstack = [null], lstack = [], table = this.table, yytext = '', yylineno = 0, yyleng = 0, recovering = 0, TERROR = 2, EOF = 1;
      var args = lstack.slice.call(arguments, 1);
      var lexer = Object.create(this.lexer);
      var sharedState = { yy: {} };
      for (var k in this.yy) {
          if (Object.prototype.hasOwnProperty.call(this.yy, k)) {
              sharedState.yy[k] = this.yy[k];
          }
      }
      lexer.setInput(input, sharedState.yy);
      sharedState.yy.lexer = lexer;
      sharedState.yy.parser = this;
      if (typeof lexer.yylloc == 'undefined') {
          lexer.yylloc = {};
      }
      var yyloc = lexer.yylloc;
      lstack.push(yyloc);
      var ranges = lexer.options && lexer.options.ranges;
      if (typeof sharedState.yy.parseError === 'function') {
          this.parseError = sharedState.yy.parseError;
      } else {
          this.parseError = Object.getPrototypeOf(this).parseError;
      }
      function popStack(n) {
          stack.length = stack.length - 2 * n;
          vstack.length = vstack.length - n;
          lstack.length = lstack.length - n;
      }
      _token_stack:
          var lex = function () {
              var token;
              token = lexer.lex() || EOF;
              if (typeof token !== 'number') {
                  token = self.symbols_[token] || token;
              }
              return token;
          };
      var symbol, preErrorSymbol, state, action, a, r, yyval = {}, p, len, newState, expected;
      while (true) {
          state = stack[stack.length - 1];
          if (this.defaultActions[state]) {
              action = this.defaultActions[state];
          } else {
              if (symbol === null || typeof symbol == 'undefined') {
                  symbol = lex();
              }
              action = table[state] && table[state][symbol];
          }
                      if (typeof action === 'undefined' || !action.length || !action[0]) {
                  var errStr = '';
                  expected = [];
                  for (p in table[state]) {
                      if (this.terminals_[p] && p > TERROR) {
                          expected.push('\'' + this.terminals_[p] + '\'');
                      }
                  }
                  if (lexer.showPosition) {
                      errStr = 'Parse error on line ' + (yylineno + 1) + ':\n' + lexer.showPosition() + '\nExpecting ' + expected.join(', ') + ', got \'' + (this.terminals_[symbol] || symbol) + '\'';
                  } else {
                      errStr = 'Parse error on line ' + (yylineno + 1) + ': Unexpected ' + (symbol == EOF ? 'end of input' : '\'' + (this.terminals_[symbol] || symbol) + '\'');
                  }
                  this.parseError(errStr, {
                      text: lexer.match,
                      token: this.terminals_[symbol] || symbol,
                      line: lexer.yylineno,
                      loc: yyloc,
                      expected: expected
                  });
              }
          if (action[0] instanceof Array && action.length > 1) {
              throw new Error('Parse Error: multiple actions possible at state: ' + state + ', token: ' + symbol);
          }
          switch (action[0]) {
          case 1:
              stack.push(symbol);
              vstack.push(lexer.yytext);
              lstack.push(lexer.yylloc);
              stack.push(action[1]);
              symbol = null;
              if (!preErrorSymbol) {
                  yyleng = lexer.yyleng;
                  yytext = lexer.yytext;
                  yylineno = lexer.yylineno;
                  yyloc = lexer.yylloc;
                  if (recovering > 0) {
                      recovering--;
                  }
              } else {
                  symbol = preErrorSymbol;
                  preErrorSymbol = null;
              }
              break;
          case 2:
              len = this.productions_[action[1]][1];
              yyval.$ = vstack[vstack.length - len];
              yyval._$ = {
                  first_line: lstack[lstack.length - (len || 1)].first_line,
                  last_line: lstack[lstack.length - 1].last_line,
                  first_column: lstack[lstack.length - (len || 1)].first_column,
                  last_column: lstack[lstack.length - 1].last_column
              };
              if (ranges) {
                  yyval._$.range = [
                      lstack[lstack.length - (len || 1)].range[0],
                      lstack[lstack.length - 1].range[1]
                  ];
              }
              r = this.performAction.apply(yyval, [
                  yytext,
                  yyleng,
                  yylineno,
                  sharedState.yy,
                  action[1],
                  vstack,
                  lstack
              ].concat(args));
              if (typeof r !== 'undefined') {
                  return r;
              }
              if (len) {
                  stack = stack.slice(0, -1 * len * 2);
                  vstack = vstack.slice(0, -1 * len);
                  lstack = lstack.slice(0, -1 * len);
              }
              stack.push(this.productions_[action[1]][0]);
              vstack.push(yyval.$);
              lstack.push(yyval._$);
              newState = table[stack[stack.length - 2]][stack[stack.length - 1]];
              stack.push(newState);
              break;
          case 3:
              return true;
          }
      }
      return true;
  }};
  
      const { ObjetoXPath } = require('./ObjetoXPath');
      const { Suma } = require('./Suma');
      const { Resta } = require('./Resta');
      const { Multiplicacion } = require('./Multiplicacion');
      const { Division } = require('./Division');
      const { Modulo } = require('./Modulo');
      const { Literal } = require('./Literal');
      const { Id } = require('./Id');
  
      const { Error } = require('./Error');
      //var erroresXPath = require('./indexXPath').erroresXPath;
      var erroresXPath = [];
  /* generated by jison-lex 0.3.4 */
  var lexer = (function(){
  var lexer = ({
  
  EOF:1,
  
  parseError:function parseError(str, hash) {
          if (this.yy.parser) {
              this.yy.parser.parseError(str, hash);
          } else {
              throw new Error(str);
          }
      },
  
  // resets the lexer, sets new input
  setInput:function (input, yy) {
          this.yy = yy || this.yy || {};
          this._input = input;
          this._more = this._backtrack = this.done = false;
          this.yylineno = this.yyleng = 0;
          this.yytext = this.matched = this.match = '';
          this.conditionStack = ['INITIAL'];
          this.yylloc = {
              first_line: 1,
              first_column: 0,
              last_line: 1,
              last_column: 0
          };
          if (this.options.ranges) {
              this.yylloc.range = [0,0];
          }
          this.offset = 0;
          return this;
      },
  
  // consumes and returns one char from the input
  input:function () {
          var ch = this._input[0];
          this.yytext += ch;
          this.yyleng++;
          this.offset++;
          this.match += ch;
          this.matched += ch;
          var lines = ch.match(/(?:\r\n?|\n).*/g);
          if (lines) {
              this.yylineno++;
              this.yylloc.last_line++;
          } else {
              this.yylloc.last_column++;
          }
          if (this.options.ranges) {
              this.yylloc.range[1]++;
          }
  
          this._input = this._input.slice(1);
          return ch;
      },
  
  // unshifts one char (or a string) into the input
  unput:function (ch) {
          var len = ch.length;
          var lines = ch.split(/(?:\r\n?|\n)/g);
  
          this._input = ch + this._input;
          this.yytext = this.yytext.substr(0, this.yytext.length - len);
          //this.yyleng -= len;
          this.offset -= len;
          var oldLines = this.match.split(/(?:\r\n?|\n)/g);
          this.match = this.match.substr(0, this.match.length - 1);
          this.matched = this.matched.substr(0, this.matched.length - 1);
  
          if (lines.length - 1) {
              this.yylineno -= lines.length - 1;
          }
          var r = this.yylloc.range;
  
          this.yylloc = {
              first_line: this.yylloc.first_line,
              last_line: this.yylineno + 1,
              first_column: this.yylloc.first_column,
              last_column: lines ?
                  (lines.length === oldLines.length ? this.yylloc.first_column : 0)
                   + oldLines[oldLines.length - lines.length].length - lines[0].length :
                this.yylloc.first_column - len
          };
  
          if (this.options.ranges) {
              this.yylloc.range = [r[0], r[0] + this.yyleng - len];
          }
          this.yyleng = this.yytext.length;
          return this;
      },
  
  // When called from action, caches matched text and appends it on next action
  more:function () {
          this._more = true;
          return this;
      },
  
  // When called from action, signals the lexer that this rule fails to match the input, so the next matching rule (regex) should be tested instead.
  reject:function () {
          if (this.options.backtrack_lexer) {
              this._backtrack = true;
          } else {
              return this.parseError('Lexical error on line ' + (this.yylineno + 1) + '. You can only invoke reject() in the lexer when the lexer is of the backtracking persuasion (options.backtrack_lexer = true).\n' + this.showPosition(), {
                  text: "",
                  token: null,
                  line: this.yylineno
              });
  
          }
          return this;
      },
  
  // retain first n characters of the match
  less:function (n) {
          this.unput(this.match.slice(n));
      },
  
  // displays already matched input, i.e. for error messages
  pastInput:function () {
          var past = this.matched.substr(0, this.matched.length - this.match.length);
          return (past.length > 20 ? '...':'') + past.substr(-20).replace(/\n/g, "");
      },
  
  // displays upcoming input, i.e. for error messages
  upcomingInput:function () {
          var next = this.match;
          if (next.length < 20) {
              next += this._input.substr(0, 20-next.length);
          }
          return (next.substr(0,20) + (next.length > 20 ? '...' : '')).replace(/\n/g, "");
      },
  
  // displays the character position where the lexing error occurred, i.e. for error messages
  showPosition:function () {
          var pre = this.pastInput();
          var c = new Array(pre.length + 1).join("-");
          return pre + this.upcomingInput() + "\n" + c + "^";
      },
  
  // test the lexed token: return FALSE when not a match, otherwise return token
  test_match:function(match, indexed_rule) {
          var token,
              lines,
              backup;
  
          if (this.options.backtrack_lexer) {
              // save context
              backup = {
                  yylineno: this.yylineno,
                  yylloc: {
                      first_line: this.yylloc.first_line,
                      last_line: this.last_line,
                      first_column: this.yylloc.first_column,
                      last_column: this.yylloc.last_column
                  },
                  yytext: this.yytext,
                  match: this.match,
                  matches: this.matches,
                  matched: this.matched,
                  yyleng: this.yyleng,
                  offset: this.offset,
                  _more: this._more,
                  _input: this._input,
                  yy: this.yy,
                  conditionStack: this.conditionStack.slice(0),
                  done: this.done
              };
              if (this.options.ranges) {
                  backup.yylloc.range = this.yylloc.range.slice(0);
              }
          }
  
          lines = match[0].match(/(?:\r\n?|\n).*/g);
          if (lines) {
              this.yylineno += lines.length;
          }
          this.yylloc = {
              first_line: this.yylloc.last_line,
              last_line: this.yylineno + 1,
              first_column: this.yylloc.last_column,
              last_column: lines ?
                           lines[lines.length - 1].length - lines[lines.length - 1].match(/\r?\n?/)[0].length :
                           this.yylloc.last_column + match[0].length
          };
          this.yytext += match[0];
          this.match += match[0];
          this.matches = match;
          this.yyleng = this.yytext.length;
          if (this.options.ranges) {
              this.yylloc.range = [this.offset, this.offset += this.yyleng];
          }
          this._more = false;
          this._backtrack = false;
          this._input = this._input.slice(match[0].length);
          this.matched += match[0];
          token = this.performAction.call(this, this.yy, this, indexed_rule, this.conditionStack[this.conditionStack.length - 1]);
          if (this.done && this._input) {
              this.done = false;
          }
          if (token) {
              return token;
          } else if (this._backtrack) {
              // recover context
              for (var k in backup) {
                  this[k] = backup[k];
              }
              return false; // rule action called reject() implying the next rule should be tested instead.
          }
          return false;
      },
  
  // return next match in input
  next:function () {
          if (this.done) {
              return this.EOF;
          }
          if (!this._input) {
              this.done = true;
          }
  
          var token,
              match,
              tempMatch,
              index;
          if (!this._more) {
              this.yytext = '';
              this.match = '';
          }
          var rules = this._currentRules();
          for (var i = 0; i < rules.length; i++) {
              tempMatch = this._input.match(this.rules[rules[i]]);
              if (tempMatch && (!match || tempMatch[0].length > match[0].length)) {
                  match = tempMatch;
                  index = i;
                  if (this.options.backtrack_lexer) {
                      token = this.test_match(tempMatch, rules[i]);
                      if (token !== false) {
                          return token;
                      } else if (this._backtrack) {
                          match = false;
                          continue; // rule action called reject() implying a rule MISmatch.
                      } else {
                          // else: this is a lexer rule which consumes input without producing a token (e.g. whitespace)
                          return false;
                      }
                  } else if (!this.options.flex) {
                      break;
                  }
              }
          }
          if (match) {
              token = this.test_match(match, rules[index]);
              if (token !== false) {
                  return token;
              }
              // else: this is a lexer rule which consumes input without producing a token (e.g. whitespace)
              return false;
          }
          if (this._input === "") {
              return this.EOF;
          } else {
              return this.parseError('Lexical error on line ' + (this.yylineno + 1) + '. Unrecognized text.\n' + this.showPosition(), {
                  text: "",
                  token: null,
                  line: this.yylineno
              });
          }
      },
  
  // return next match that has a token
  lex:function lex () {
          var r = this.next();
          if (r) {
              return r;
          } else {
              return this.lex();
          }
      },
  
  // activates a new lexer condition state (pushes the new lexer condition state onto the condition stack)
  begin:function begin (condition) {
          this.conditionStack.push(condition);
      },
  
  // pop the previously active lexer condition state off the condition stack
  popState:function popState () {
          var n = this.conditionStack.length - 1;
          if (n > 0) {
              return this.conditionStack.pop();
          } else {
              return this.conditionStack[0];
          }
      },
  
  // produce the lexer rule set which is active for the currently active lexer condition state
  _currentRules:function _currentRules () {
          if (this.conditionStack.length && this.conditionStack[this.conditionStack.length - 1]) {
              return this.conditions[this.conditionStack[this.conditionStack.length - 1]].rules;
          } else {
              return this.conditions["INITIAL"].rules;
          }
      },
  
  // return the currently active lexer condition state; when an index argument is provided it produces the N-th previous condition state, if available
  topState:function topState (n) {
          n = this.conditionStack.length - 1 - Math.abs(n || 0);
          if (n >= 0) {
              return this.conditionStack[n];
          } else {
              return "INITIAL";
          }
      },
  
  // alias for begin(condition)
  pushState:function pushState (condition) {
          this.begin(condition);
      },
  
  // return the number of states currently on the stack
  stateStackSize:function stateStackSize() {
          return this.conditionStack.length;
      },
  options: {"case-sensitive":true},
  performAction: function anonymous(yy,yy_,$avoiding_name_collisions,YY_START) {
  var YYSTATE=YY_START;
  switch($avoiding_name_collisions) {
  case 0:/* skip whitespace */
  break;
  case 1:return 44;
  break;
  case 2:return 45;
  break;
  case 3:return 21;
  break;
  case 4:return 'Rancestor';
  break;
  case 5:return 'RancestorOS';
  break;
  case 6:return 'Rattribute';
  break;
  case 7:return 'Rchild';
  break;
  case 8:return 'Rdescendant';
  break;
  case 9:return 'RdescendantOS';
  break;
  case 10:return 'Rfollowing';
  break;
  case 11:return 'RfollowingSibling';
  break;
  case 12:return 'Rnamespace';
  break;
  case 13:return 'Rparent';
  break;
  case 14:return 'Rpreceding';
  break;
  case 15:return 'RprecedingSibling';
  break;
  case 16:return 'Rself';
  break;
  case 17:return 38;
  break;
  case 18:return 37;
  break;
  case 19:return 30;
  break;
  case 20:return "div";
  break;
  case 21:return 10;
  break;
  case 22:return 11;
  break;
  case 23:return 26;
  break;
  case 24:return 25;
  break;
  case 25:return "arroba";
  break;
  case 26:return "lcorchete";
  break;
  case 27:return "rcorchete";
  break;
  case 28:return "dobleBiDot";
  break;
  case 29:return "singleBiDot";
  break;
  case 30:return "vertical";
  break;
  case 31:return 27;
  break;
  case 32:return 28;
  break;
  case 33:return "por";
  break;
  case 34:return 35;
  break;
  case 35:return 36;
  break;
  case 36:return 32;
  break;
  case 37:return 31;
  break;
  case 38:return 34;
  break;
  case 39:return 33;
  break;
  case 40:return 22;
  break;
  case 41:return 23;
  break;
  case 42:return 41;
  break;
  case 43:return 40;
  break;
  case 44:return 17;
  break;
  case 45:return 43;
  break;
  case 46:return 42;
  break;
  case 47:
          //console.error('Este es un error léxico: ' + yy_.yytext + ', en la linea: ' + yy_.yylloc.first_line + ', en la columna: ' + yy_.yylloc.first_column);
          erroresXPath.push(new Error('Lexico'), yy_.yytext, yy_.yylloc.first_line, yy_.yylloc.first_column, `${yy_.yytext} no pertenece al lengaje XPath`);
      
  break;
  case 48:return 5
  break;
  }
  },
  rules: [/^(?:\s+)/,/^(?:last\b)/,/^(?:position\b)/,/^(?:node\b)/,/^(?:ancestor\b)/,/^(?:ancestor-or-self\b)/,/^(?:attribute\b)/,/^(?:child\b)/,/^(?:descendant\b)/,/^(?:descendant-or-self\b)/,/^(?:following\b)/,/^(?:following-sibling\b)/,/^(?:namespace\b)/,/^(?:parent\b)/,/^(?:preceding\b)/,/^(?:preceding-sibling\b)/,/^(?:self\b)/,/^(?:or\b)/,/^(?:and\b)/,/^(?:mod\b)/,/^(?:div\b)/,/^(?:\/\/)/,/^(?:\/)/,/^(?:\.\.)/,/^(?:\.)/,/^(?:@)/,/^(?:\[)/,/^(?:\])/,/^(?:::)/,/^(?::)/,/^(?:\|)/,/^(?:\+)/,/^(?:-)/,/^(?:\*)/,/^(?:=)/,/^(?:!=)/,/^(?:<=)/,/^(?:<)/,/^(?:>=)/,/^(?:>)/,/^(?:\()/,/^(?:\))/,/^(?:(([0-9]+\.[0-9]*)|(\.[0-9]+)))/,/^(?:[0-9]+)/,/^(?:[a-zA-Z_][a-zA-Z0-9_ñÑ]*)/,/^(?:("((\\([\'\"\\bfnrtv]))|([^\"\\]+))*"))/,/^(?:('((\\([\'\"\\bfnrtv]))|([^\'\\]))'))/,/^(?:.)/,/^(?:$)/],
  conditions: {"INITIAL":{"rules":[0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,32,33,34,35,36,37,38,39,40,41,42,43,44,45,46,47,48],"inclusive":true}}
  });
  return lexer;
  })();
  parser.lexer = lexer;
  function Parser () {
    this.yy = {};
  }
  Parser.prototype = parser;parser.Parser = Parser;
  return new Parser;
  })();
  
  
  if (typeof require !== 'undefined' && typeof exports !== 'undefined') {
  exports.parser = XPathDesc;
  exports.Parser = XPathDesc.Parser;
  exports.parse = function () { return XPathDesc.parse.apply(XPathDesc, arguments); };
  exports.main = function commonjsMain (args) {
      if (!args[1]) {
          console.log('Usage: '+args[0]+' FILE');
          process.exit(1);
      }
      var source = require('fs').readFileSync(require('path').normalize(args[1]), "utf8");
      return exports.parser.parse(source);
  };
  if (typeof module !== 'undefined' && require.main === module) {
    exports.main(process.argv.slice(1));
  }
  }