pegjs/lib/metagrammar.js

PEG.grammarParser = (function(){
  /* Generated by PEG.js (http://pegjs.majda.cz/). */
  
  var result = {
    _startRule: "grammar",
    
    _quoteString: function(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(/\u2028/g, '\\u2028') // line separator
        .replace(/\u2029/g, '\\u2029') // paragraph separator
        .replace(/\n/g, '\\n')         // line feed
        + '"';
    },
    
    _arrayContains: function(array, value) {
      /*
       * Stupid IE does not have Array.prototype.indexOf, otherwise this function
       * would be a one-liner.
       */
      var length = array.length;
      for (var i = 0; i < length; i++) {
        if (array[i] === value) {
          return true;
        }
      }
      return false;
    },
    
    _matchFailed: function(failure) {
      if (this._pos < this._rightmostMatchFailuresPos) {
        return;
      }
      
      if (this._pos > this._rightmostMatchFailuresPos) {
        this._rightmostMatchFailuresPos = this._pos;
        this._rightmostMatchFailuresExpected = [];
      }
      
      if (!this._arrayContains(this._rightmostMatchFailuresExpected, failure)) {
        this._rightmostMatchFailuresExpected.push(failure);
      }
    },
    
    _parse_grammar: function(context) {
      var cacheKey = "grammar" + '@' + this._pos;
      var cachedResult = this._cache[cacheKey];
      if (cachedResult) {
        this._pos = cachedResult.nextPos;
        return cachedResult.result;
      }
      
      var pos = this._pos;
      
      
      var savedPos0 = this._pos;
      var result2 = this._parse___(context);
      if (result2 !== null) {
        var result4 = this._parse_rule(context);
        if (result4 !== null) {
          var result3 = [];
          while (result4 !== null) {
            result3.push(result4);
            var result4 = this._parse_rule(context);
          }
        } else {
          var result3 = null;
        }
        if (result3 !== null) {
          var result1 = [result2, result3];
        } else {
          var result1 = null;
          this._pos = savedPos0;
        }
      } else {
        var result1 = null;
        this._pos = savedPos0;
      }
      var result0 = result1 !== null
        ? (function($1, $2) { 
              var result = {};
              PEG.ArrayUtils.each($2, function(rule) { result[rule.name] = rule; });
              return result;
             }).apply(null, result1)
        : null;
      
      
      
      this._cache[cacheKey] = {
        nextPos: this._pos,
        result:  result0
      };
      return result0;
    },
    
    _parse_rule: function(context) {
      var cacheKey = "rule" + '@' + this._pos;
      var cachedResult = this._cache[cacheKey];
      if (cachedResult) {
        this._pos = cachedResult.nextPos;
        return cachedResult.result;
      }
      
      var pos = this._pos;
      
      
      var savedPos1 = this._pos;
      var result7 = this._parse_identifier(context);
      if (result7 !== null) {
        var result12 = this._parse_literal(context);
        if (result12 !== null) {
          var result8 = result12;
        } else {
          if (this._input.substr(this._pos, 0) === "") {
            var result11 = "";
            this._pos += 0;
          } else {
            var result11 = null;
            if (context.reportMatchFailures) {
              this._matchFailed(this._quoteString(""));
            }
          }
          if (result11 !== null) {
            var result8 = result11;
          } else {
            var result8 = null;;
          };
        }
        if (result8 !== null) {
          var result9 = this._parse_equals(context);
          if (result9 !== null) {
            var result10 = this._parse_choice(context);
            if (result10 !== null) {
              var result6 = [result7, result8, result9, result10];
            } else {
              var result6 = null;
              this._pos = savedPos1;
            }
          } else {
            var result6 = null;
            this._pos = savedPos1;
          }
        } else {
          var result6 = null;
          this._pos = savedPos1;
        }
      } else {
        var result6 = null;
        this._pos = savedPos1;
      }
      var result5 = result6 !== null
        ? (function($1, $2, $3, $4) { 
              return {
                type:        "rule",
                name:        $1,
                displayName: $2 !== "" ? $2 : null,
                expression:  $4
              };
             }).apply(null, result6)
        : null;
      
      
      
      this._cache[cacheKey] = {
        nextPos: this._pos,
        result:  result5
      };
      return result5;
    },
    
    _parse_choice: function(context) {
      var cacheKey = "choice" + '@' + this._pos;
      var cachedResult = this._cache[cacheKey];
      if (cachedResult) {
        this._pos = cachedResult.nextPos;
        return cachedResult.result;
      }
      
      var pos = this._pos;
      
      
      var savedPos2 = this._pos;
      var result15 = this._parse_sequence(context);
      if (result15 !== null) {
        var result16 = [];
        var savedPos3 = this._pos;
        var result18 = this._parse_slash(context);
        if (result18 !== null) {
          var result19 = this._parse_sequence(context);
          if (result19 !== null) {
            var result17 = [result18, result19];
          } else {
            var result17 = null;
            this._pos = savedPos3;
          }
        } else {
          var result17 = null;
          this._pos = savedPos3;
        }
        while (result17 !== null) {
          result16.push(result17);
          var savedPos3 = this._pos;
          var result18 = this._parse_slash(context);
          if (result18 !== null) {
            var result19 = this._parse_sequence(context);
            if (result19 !== null) {
              var result17 = [result18, result19];
            } else {
              var result17 = null;
              this._pos = savedPos3;
            }
          } else {
            var result17 = null;
            this._pos = savedPos3;
          }
        }
        if (result16 !== null) {
          var result14 = [result15, result16];
        } else {
          var result14 = null;
          this._pos = savedPos2;
        }
      } else {
        var result14 = null;
        this._pos = savedPos2;
      }
      var result13 = result14 !== null
        ? (function($1, $2) { 
              if ($2.length > 0) {
                var alternatives = [$1].concat(PEG.ArrayUtils.map(
                    $2,
                    function(element) { return element[1]; }
                ));
                return {
                  type:         "choice",
                  alternatives: alternatives
                }
              } else {
                return $1;
              }
             }).apply(null, result14)
        : null;
      
      
      
      this._cache[cacheKey] = {
        nextPos: this._pos,
        result:  result13
      };
      return result13;
    },
    
    _parse_sequence: function(context) {
      var cacheKey = "sequence" + '@' + this._pos;
      var cachedResult = this._cache[cacheKey];
      if (cachedResult) {
        this._pos = cachedResult.nextPos;
        return cachedResult.result;
      }
      
      var pos = this._pos;
      
      
      var savedPos4 = this._pos;
      var result26 = [];
      var result28 = this._parse_labeled(context);
      while (result28 !== null) {
        result26.push(result28);
        var result28 = this._parse_labeled(context);
      }
      if (result26 !== null) {
        var result27 = this._parse_action(context);
        if (result27 !== null) {
          var result25 = [result26, result27];
        } else {
          var result25 = null;
          this._pos = savedPos4;
        }
      } else {
        var result25 = null;
        this._pos = savedPos4;
      }
      var result24 = result25 !== null
        ? (function($1, $2) { 
              var expression = $1.length != 1
                ? {
                    type:     "sequence",
                    elements: $1
                  }
                : $1[0];
              return {
                type:       "action",
                expression: expression,
                action:     $2
              };
             }).apply(null, result25)
        : null;
      if (result24 !== null) {
        var result20 = result24;
      } else {
        var result22 = [];
        var result23 = this._parse_labeled(context);
        while (result23 !== null) {
          result22.push(result23);
          var result23 = this._parse_labeled(context);
        }
        var result21 = result22 !== null
          ? (function($1) { 
                return $1.length != 1
                  ? {
                      type:     "sequence",
                      elements: $1
                    }
                  : $1[0];
               })(result22)
          : null;
        if (result21 !== null) {
          var result20 = result21;
        } else {
          var result20 = null;;
        };
      }
      
      
      
      this._cache[cacheKey] = {
        nextPos: this._pos,
        result:  result20
      };
      return result20;
    },
    
    _parse_labeled: function(context) {
      var cacheKey = "labeled" + '@' + this._pos;
      var cachedResult = this._cache[cacheKey];
      if (cachedResult) {
        this._pos = cachedResult.nextPos;
        return cachedResult.result;
      }
      
      var pos = this._pos;
      
      
      var savedPos5 = this._pos;
      var result33 = this._parse_identifier(context);
      if (result33 !== null) {
        var result34 = this._parse_colon(context);
        if (result34 !== null) {
          var result35 = this._parse_prefixed(context);
          if (result35 !== null) {
            var result32 = [result33, result34, result35];
          } else {
            var result32 = null;
            this._pos = savedPos5;
          }
        } else {
          var result32 = null;
          this._pos = savedPos5;
        }
      } else {
        var result32 = null;
        this._pos = savedPos5;
      }
      var result31 = result32 !== null
        ? (function($1, $2, $3) { 
              return {
                type:       "labeled",
                label:      $1,
                expression: $3
              };
             }).apply(null, result32)
        : null;
      if (result31 !== null) {
        var result29 = result31;
      } else {
        var result30 = this._parse_prefixed(context);
        if (result30 !== null) {
          var result29 = result30;
        } else {
          var result29 = null;;
        };
      }
      
      
      
      this._cache[cacheKey] = {
        nextPos: this._pos,
        result:  result29
      };
      return result29;
    },
    
    _parse_prefixed: function(context) {
      var cacheKey = "prefixed" + '@' + this._pos;
      var cachedResult = this._cache[cacheKey];
      if (cachedResult) {
        this._pos = cachedResult.nextPos;
        return cachedResult.result;
      }
      
      var pos = this._pos;
      
      
      var savedPos7 = this._pos;
      var result44 = this._parse_and(context);
      if (result44 !== null) {
        var result45 = this._parse_suffixed(context);
        if (result45 !== null) {
          var result43 = [result44, result45];
        } else {
          var result43 = null;
          this._pos = savedPos7;
        }
      } else {
        var result43 = null;
        this._pos = savedPos7;
      }
      var result42 = result43 !== null
        ? (function($1, $2) {  return { type: "and_predicate", expression: $2 };  }).apply(null, result43)
        : null;
      if (result42 !== null) {
        var result36 = result42;
      } else {
        var savedPos6 = this._pos;
        var result40 = this._parse_not(context);
        if (result40 !== null) {
          var result41 = this._parse_suffixed(context);
          if (result41 !== null) {
            var result39 = [result40, result41];
          } else {
            var result39 = null;
            this._pos = savedPos6;
          }
        } else {
          var result39 = null;
          this._pos = savedPos6;
        }
        var result38 = result39 !== null
          ? (function($1, $2) {  return { type: "not_predicate", expression: $2 };  }).apply(null, result39)
          : null;
        if (result38 !== null) {
          var result36 = result38;
        } else {
          var result37 = this._parse_suffixed(context);
          if (result37 !== null) {
            var result36 = result37;
          } else {
            var result36 = null;;
          };
        };
      }
      
      
      
      this._cache[cacheKey] = {
        nextPos: this._pos,
        result:  result36
      };
      return result36;
    },
    
    _parse_suffixed: function(context) {
      var cacheKey = "suffixed" + '@' + this._pos;
      var cachedResult = this._cache[cacheKey];
      if (cachedResult) {
        this._pos = cachedResult.nextPos;
        return cachedResult.result;
      }
      
      var pos = this._pos;
      
      
      var savedPos10 = this._pos;
      var result58 = this._parse_primary(context);
      if (result58 !== null) {
        var result59 = this._parse_question(context);
        if (result59 !== null) {
          var result57 = [result58, result59];
        } else {
          var result57 = null;
          this._pos = savedPos10;
        }
      } else {
        var result57 = null;
        this._pos = savedPos10;
      }
      var result56 = result57 !== null
        ? (function($1, $2) {  return { type: "optional",     expression: $1};  }).apply(null, result57)
        : null;
      if (result56 !== null) {
        var result46 = result56;
      } else {
        var savedPos9 = this._pos;
        var result54 = this._parse_primary(context);
        if (result54 !== null) {
          var result55 = this._parse_star(context);
          if (result55 !== null) {
            var result53 = [result54, result55];
          } else {
            var result53 = null;
            this._pos = savedPos9;
          }
        } else {
          var result53 = null;
          this._pos = savedPos9;
        }
        var result52 = result53 !== null
          ? (function($1, $2) {  return { type: "zero_or_more", expression: $1};  }).apply(null, result53)
          : null;
        if (result52 !== null) {
          var result46 = result52;
        } else {
          var savedPos8 = this._pos;
          var result50 = this._parse_primary(context);
          if (result50 !== null) {
            var result51 = this._parse_plus(context);
            if (result51 !== null) {
              var result49 = [result50, result51];
            } else {
              var result49 = null;
              this._pos = savedPos8;
            }
          } else {
            var result49 = null;
            this._pos = savedPos8;
          }
          var result48 = result49 !== null
            ? (function($1, $2) {  return { type: "one_or_more",  expression: $1};  }).apply(null, result49)
            : null;
          if (result48 !== null) {
            var result46 = result48;
          } else {
            var result47 = this._parse_primary(context);
            if (result47 !== null) {
              var result46 = result47;
            } else {
              var result46 = null;;
            };
          };
        };
      }
      
      
      
      this._cache[cacheKey] = {
        nextPos: this._pos,
        result:  result46
      };
      return result46;
    },
    
    _parse_primary: function(context) {
      var cacheKey = "primary" + '@' + this._pos;
      var cachedResult = this._cache[cacheKey];
      if (cachedResult) {
        this._pos = cachedResult.nextPos;
        return cachedResult.result;
      }
      
      var pos = this._pos;
      
      
      var savedPos12 = this._pos;
      var result73 = this._parse_identifier(context);
      if (result73 !== null) {
        var savedPos13 = this._pos;
        var savedReportMatchFailuresVar0 = context.reportMatchFailures;
        context.reportMatchFailures = false;
        var savedPos14 = this._pos;
        var result79 = this._parse_literal(context);
        if (result79 !== null) {
          var result76 = result79;
        } else {
          if (this._input.substr(this._pos, 0) === "") {
            var result78 = "";
            this._pos += 0;
          } else {
            var result78 = null;
            if (context.reportMatchFailures) {
              this._matchFailed(this._quoteString(""));
            }
          }
          if (result78 !== null) {
            var result76 = result78;
          } else {
            var result76 = null;;
          };
        }
        if (result76 !== null) {
          var result77 = this._parse_equals(context);
          if (result77 !== null) {
            var result75 = [result76, result77];
          } else {
            var result75 = null;
            this._pos = savedPos14;
          }
        } else {
          var result75 = null;
          this._pos = savedPos14;
        }
        context.reportMatchFailures = savedReportMatchFailuresVar0;
        if (result75 === null) {
          var result74 = '';
        } else {
          var result74 = null;
          this._pos = savedPos13;
        }
        if (result74 !== null) {
          var result72 = [result73, result74];
        } else {
          var result72 = null;
          this._pos = savedPos12;
        }
      } else {
        var result72 = null;
        this._pos = savedPos12;
      }
      var result71 = result72 !== null
        ? (function($1, $2) {  return { type: "rule_ref", name:  $1 };  }).apply(null, result72)
        : null;
      if (result71 !== null) {
        var result60 = result71;
      } else {
        var result70 = this._parse_literal(context);
        var result69 = result70 !== null
          ? (function($1) {  return { type: "literal",  value: $1 };  })(result70)
          : null;
        if (result69 !== null) {
          var result60 = result69;
        } else {
          var result68 = this._parse_dot(context);
          var result67 = result68 !== null
            ? (function($1) {  return { type: "any"                 };  })(result68)
            : null;
          if (result67 !== null) {
            var result60 = result67;
          } else {
            var result66 = this._parse_class(context);
            if (result66 !== null) {
              var result60 = result66;
            } else {
              var savedPos11 = this._pos;
              var result63 = this._parse_lparen(context);
              if (result63 !== null) {
                var result64 = this._parse_choice(context);
                if (result64 !== null) {
                  var result65 = this._parse_rparen(context);
                  if (result65 !== null) {
                    var result62 = [result63, result64, result65];
                  } else {
                    var result62 = null;
                    this._pos = savedPos11;
                  }
                } else {
                  var result62 = null;
                  this._pos = savedPos11;
                }
              } else {
                var result62 = null;
                this._pos = savedPos11;
              }
              var result61 = result62 !== null
                ? (function($1, $2, $3) {  return $2;  }).apply(null, result62)
                : null;
              if (result61 !== null) {
                var result60 = result61;
              } else {
                var result60 = null;;
              };
            };
          };
        };
      }
      
      
      
      this._cache[cacheKey] = {
        nextPos: this._pos,
        result:  result60
      };
      return result60;
    },
    
    _parse_action: function(context) {
      var cacheKey = "action" + '@' + this._pos;
      var cachedResult = this._cache[cacheKey];
      if (cachedResult) {
        this._pos = cachedResult.nextPos;
        return cachedResult.result;
      }
      
      var pos = this._pos;
      
      var savedReportMatchFailures = context.reportMatchFailures;
      context.reportMatchFailures = false;
      var savedPos15 = this._pos;
      var result82 = this._parse_braced(context);
      if (result82 !== null) {
        var result83 = this._parse___(context);
        if (result83 !== null) {
          var result81 = [result82, result83];
        } else {
          var result81 = null;
          this._pos = savedPos15;
        }
      } else {
        var result81 = null;
        this._pos = savedPos15;
      }
      var result80 = result81 !== null
        ? (function($1, $2) {  return $1.substr(1, $1.length - 2);  }).apply(null, result81)
        : null;
      context.reportMatchFailures = savedReportMatchFailures;
      if (context.reportMatchFailures && result80 === null) {
        this._matchFailed("action");
      }
      
      this._cache[cacheKey] = {
        nextPos: this._pos,
        result:  result80
      };
      return result80;
    },
    
    _parse_braced: function(context) {
      var cacheKey = "braced" + '@' + this._pos;
      var cachedResult = this._cache[cacheKey];
      if (cachedResult) {
        this._pos = cachedResult.nextPos;
        return cachedResult.result;
      }
      
      var pos = this._pos;
      
      
      var savedPos16 = this._pos;
      if (this._input.substr(this._pos, 1) === "{") {
        var result86 = "{";
        this._pos += 1;
      } else {
        var result86 = null;
        if (context.reportMatchFailures) {
          this._matchFailed(this._quoteString("{"));
        }
      }
      if (result86 !== null) {
        var result87 = [];
        var result91 = this._parse_braced(context);
        if (result91 !== null) {
          var result89 = result91;
        } else {
          var result90 = this._parse_nonBraceCharacter(context);
          if (result90 !== null) {
            var result89 = result90;
          } else {
            var result89 = null;;
          };
        }
        while (result89 !== null) {
          result87.push(result89);
          var result91 = this._parse_braced(context);
          if (result91 !== null) {
            var result89 = result91;
          } else {
            var result90 = this._parse_nonBraceCharacter(context);
            if (result90 !== null) {
              var result89 = result90;
            } else {
              var result89 = null;;
            };
          }
        }
        if (result87 !== null) {
          if (this._input.substr(this._pos, 1) === "}") {
            var result88 = "}";
            this._pos += 1;
          } else {
            var result88 = null;
            if (context.reportMatchFailures) {
              this._matchFailed(this._quoteString("}"));
            }
          }
          if (result88 !== null) {
            var result85 = [result86, result87, result88];
          } else {
            var result85 = null;
            this._pos = savedPos16;
          }
        } else {
          var result85 = null;
          this._pos = savedPos16;
        }
      } else {
        var result85 = null;
        this._pos = savedPos16;
      }
      var result84 = result85 !== null
        ? (function($1, $2, $3) {  return $1 + $2.join("") + $3;  }).apply(null, result85)
        : null;
      
      
      
      this._cache[cacheKey] = {
        nextPos: this._pos,
        result:  result84
      };
      return result84;
    },
    
    _parse_nonBraceCharacters: function(context) {
      var cacheKey = "nonBraceCharacters" + '@' + this._pos;
      var cachedResult = this._cache[cacheKey];
      if (cachedResult) {
        this._pos = cachedResult.nextPos;
        return cachedResult.result;
      }
      
      var pos = this._pos;
      
      
      var result94 = this._parse_nonBraceCharacter(context);
      if (result94 !== null) {
        var result93 = [];
        while (result94 !== null) {
          result93.push(result94);
          var result94 = this._parse_nonBraceCharacter(context);
        }
      } else {
        var result93 = null;
      }
      var result92 = result93 !== null
        ? (function($1) {  return $1.join("");  })(result93)
        : null;
      
      
      
      this._cache[cacheKey] = {
        nextPos: this._pos,
        result:  result92
      };
      return result92;
    },
    
    _parse_nonBraceCharacter: function(context) {
      var cacheKey = "nonBraceCharacter" + '@' + this._pos;
      var cachedResult = this._cache[cacheKey];
      if (cachedResult) {
        this._pos = cachedResult.nextPos;
        return cachedResult.result;
      }
      
      var pos = this._pos;
      
      
      if (this._input.substr(this._pos).match(/^[^{}]/) !== null) {
        var result95 = this._input.charAt(this._pos);
        this._pos++;
      } else {
        var result95 = null;
        if (context.reportMatchFailures) {
          this._matchFailed("[^{}]");
        }
      }
      
      
      
      this._cache[cacheKey] = {
        nextPos: this._pos,
        result:  result95
      };
      return result95;
    },
    
    _parse_equals: function(context) {
      var cacheKey = "equals" + '@' + this._pos;
      var cachedResult = this._cache[cacheKey];
      if (cachedResult) {
        this._pos = cachedResult.nextPos;
        return cachedResult.result;
      }
      
      var pos = this._pos;
      
      
      var savedPos17 = this._pos;
      if (this._input.substr(this._pos, 1) === "=") {
        var result98 = "=";
        this._pos += 1;
      } else {
        var result98 = null;
        if (context.reportMatchFailures) {
          this._matchFailed(this._quoteString("="));
        }
      }
      if (result98 !== null) {
        var result99 = this._parse___(context);
        if (result99 !== null) {
          var result97 = [result98, result99];
        } else {
          var result97 = null;
          this._pos = savedPos17;
        }
      } else {
        var result97 = null;
        this._pos = savedPos17;
      }
      var result96 = result97 !== null
        ? (function($1, $2) {  return $1;  }).apply(null, result97)
        : null;
      
      
      
      this._cache[cacheKey] = {
        nextPos: this._pos,
        result:  result96
      };
      return result96;
    },
    
    _parse_colon: function(context) {
      var cacheKey = "colon" + '@' + this._pos;
      var cachedResult = this._cache[cacheKey];
      if (cachedResult) {
        this._pos = cachedResult.nextPos;
        return cachedResult.result;
      }
      
      var pos = this._pos;
      
      
      var savedPos18 = this._pos;
      if (this._input.substr(this._pos, 1) === ":") {
        var result102 = ":";
        this._pos += 1;
      } else {
        var result102 = null;
        if (context.reportMatchFailures) {
          this._matchFailed(this._quoteString(":"));
        }
      }
      if (result102 !== null) {
        var result103 = this._parse___(context);
        if (result103 !== null) {
          var result101 = [result102, result103];
        } else {
          var result101 = null;
          this._pos = savedPos18;
        }
      } else {
        var result101 = null;
        this._pos = savedPos18;
      }
      var result100 = result101 !== null
        ? (function($1, $2) {  return $1;  }).apply(null, result101)
        : null;
      
      
      
      this._cache[cacheKey] = {
        nextPos: this._pos,
        result:  result100
      };
      return result100;
    },
    
    _parse_slash: function(context) {
      var cacheKey = "slash" + '@' + this._pos;
      var cachedResult = this._cache[cacheKey];
      if (cachedResult) {
        this._pos = cachedResult.nextPos;
        return cachedResult.result;
      }
      
      var pos = this._pos;
      
      
      var savedPos19 = this._pos;
      if (this._input.substr(this._pos, 1) === "/") {
        var result106 = "/";
        this._pos += 1;
      } else {
        var result106 = null;
        if (context.reportMatchFailures) {
          this._matchFailed(this._quoteString("/"));
        }
      }
      if (result106 !== null) {
        var result107 = this._parse___(context);
        if (result107 !== null) {
          var result105 = [result106, result107];
        } else {
          var result105 = null;
          this._pos = savedPos19;
        }
      } else {
        var result105 = null;
        this._pos = savedPos19;
      }
      var result104 = result105 !== null
        ? (function($1, $2) {  return $1;  }).apply(null, result105)
        : null;
      
      
      
      this._cache[cacheKey] = {
        nextPos: this._pos,
        result:  result104
      };
      return result104;
    },
    
    _parse_and: function(context) {
      var cacheKey = "and" + '@' + this._pos;
      var cachedResult = this._cache[cacheKey];
      if (cachedResult) {
        this._pos = cachedResult.nextPos;
        return cachedResult.result;
      }
      
      var pos = this._pos;
      
      
      var savedPos20 = this._pos;
      if (this._input.substr(this._pos, 1) === "&") {
        var result110 = "&";
        this._pos += 1;
      } else {
        var result110 = null;
        if (context.reportMatchFailures) {
          this._matchFailed(this._quoteString("&"));
        }
      }
      if (result110 !== null) {
        var result111 = this._parse___(context);
        if (result111 !== null) {
          var result109 = [result110, result111];
        } else {
          var result109 = null;
          this._pos = savedPos20;
        }
      } else {
        var result109 = null;
        this._pos = savedPos20;
      }
      var result108 = result109 !== null
        ? (function($1, $2) {  return $1;  }).apply(null, result109)
        : null;
      
      
      
      this._cache[cacheKey] = {
        nextPos: this._pos,
        result:  result108
      };
      return result108;
    },
    
    _parse_not: function(context) {
      var cacheKey = "not" + '@' + this._pos;
      var cachedResult = this._cache[cacheKey];
      if (cachedResult) {
        this._pos = cachedResult.nextPos;
        return cachedResult.result;
      }
      
      var pos = this._pos;
      
      
      var savedPos21 = this._pos;
      if (this._input.substr(this._pos, 1) === "!") {
        var result114 = "!";
        this._pos += 1;
      } else {
        var result114 = null;
        if (context.reportMatchFailures) {
          this._matchFailed(this._quoteString("!"));
        }
      }
      if (result114 !== null) {
        var result115 = this._parse___(context);
        if (result115 !== null) {
          var result113 = [result114, result115];
        } else {
          var result113 = null;
          this._pos = savedPos21;
        }
      } else {
        var result113 = null;
        this._pos = savedPos21;
      }
      var result112 = result113 !== null
        ? (function($1, $2) {  return $1;  }).apply(null, result113)
        : null;
      
      
      
      this._cache[cacheKey] = {
        nextPos: this._pos,
        result:  result112
      };
      return result112;
    },
    
    _parse_question: function(context) {
      var cacheKey = "question" + '@' + this._pos;
      var cachedResult = this._cache[cacheKey];
      if (cachedResult) {
        this._pos = cachedResult.nextPos;
        return cachedResult.result;
      }
      
      var pos = this._pos;
      
      
      var savedPos22 = this._pos;
      if (this._input.substr(this._pos, 1) === "?") {
        var result118 = "?";
        this._pos += 1;
      } else {
        var result118 = null;
        if (context.reportMatchFailures) {
          this._matchFailed(this._quoteString("?"));
        }
      }
      if (result118 !== null) {
        var result119 = this._parse___(context);
        if (result119 !== null) {
          var result117 = [result118, result119];
        } else {
          var result117 = null;
          this._pos = savedPos22;
        }
      } else {
        var result117 = null;
        this._pos = savedPos22;
      }
      var result116 = result117 !== null
        ? (function($1, $2) {  return $1;  }).apply(null, result117)
        : null;
      
      
      
      this._cache[cacheKey] = {
        nextPos: this._pos,
        result:  result116
      };
      return result116;
    },
    
    _parse_star: function(context) {
      var cacheKey = "star" + '@' + this._pos;
      var cachedResult = this._cache[cacheKey];
      if (cachedResult) {
        this._pos = cachedResult.nextPos;
        return cachedResult.result;
      }
      
      var pos = this._pos;
      
      
      var savedPos23 = this._pos;
      if (this._input.substr(this._pos, 1) === "*") {
        var result122 = "*";
        this._pos += 1;
      } else {
        var result122 = null;
        if (context.reportMatchFailures) {
          this._matchFailed(this._quoteString("*"));
        }
      }
      if (result122 !== null) {
        var result123 = this._parse___(context);
        if (result123 !== null) {
          var result121 = [result122, result123];
        } else {
          var result121 = null;
          this._pos = savedPos23;
        }
      } else {
        var result121 = null;
        this._pos = savedPos23;
      }
      var result120 = result121 !== null
        ? (function($1, $2) {  return $1;  }).apply(null, result121)
        : null;
      
      
      
      this._cache[cacheKey] = {
        nextPos: this._pos,
        result:  result120
      };
      return result120;
    },
    
    _parse_plus: function(context) {
      var cacheKey = "plus" + '@' + this._pos;
      var cachedResult = this._cache[cacheKey];
      if (cachedResult) {
        this._pos = cachedResult.nextPos;
        return cachedResult.result;
      }
      
      var pos = this._pos;
      
      
      var savedPos24 = this._pos;
      if (this._input.substr(this._pos, 1) === "+") {
        var result126 = "+";
        this._pos += 1;
      } else {
        var result126 = null;
        if (context.reportMatchFailures) {
          this._matchFailed(this._quoteString("+"));
        }
      }
      if (result126 !== null) {
        var result127 = this._parse___(context);
        if (result127 !== null) {
          var result125 = [result126, result127];
        } else {
          var result125 = null;
          this._pos = savedPos24;
        }
      } else {
        var result125 = null;
        this._pos = savedPos24;
      }
      var result124 = result125 !== null
        ? (function($1, $2) {  return $1;  }).apply(null, result125)
        : null;
      
      
      
      this._cache[cacheKey] = {
        nextPos: this._pos,
        result:  result124
      };
      return result124;
    },
    
    _parse_lparen: function(context) {
      var cacheKey = "lparen" + '@' + this._pos;
      var cachedResult = this._cache[cacheKey];
      if (cachedResult) {
        this._pos = cachedResult.nextPos;
        return cachedResult.result;
      }
      
      var pos = this._pos;
      
      
      var savedPos25 = this._pos;
      if (this._input.substr(this._pos, 1) === "(") {
        var result130 = "(";
        this._pos += 1;
      } else {
        var result130 = null;
        if (context.reportMatchFailures) {
          this._matchFailed(this._quoteString("("));
        }
      }
      if (result130 !== null) {
        var result131 = this._parse___(context);
        if (result131 !== null) {
          var result129 = [result130, result131];
        } else {
          var result129 = null;
          this._pos = savedPos25;
        }
      } else {
        var result129 = null;
        this._pos = savedPos25;
      }
      var result128 = result129 !== null
        ? (function($1, $2) {  return $1;  }).apply(null, result129)
        : null;
      
      
      
      this._cache[cacheKey] = {
        nextPos: this._pos,
        result:  result128
      };
      return result128;
    },
    
    _parse_rparen: function(context) {
      var cacheKey = "rparen" + '@' + this._pos;
      var cachedResult = this._cache[cacheKey];
      if (cachedResult) {
        this._pos = cachedResult.nextPos;
        return cachedResult.result;
      }
      
      var pos = this._pos;
      
      
      var savedPos26 = this._pos;
      if (this._input.substr(this._pos, 1) === ")") {
        var result134 = ")";
        this._pos += 1;
      } else {
        var result134 = null;
        if (context.reportMatchFailures) {
          this._matchFailed(this._quoteString(")"));
        }
      }
      if (result134 !== null) {
        var result135 = this._parse___(context);
        if (result135 !== null) {
          var result133 = [result134, result135];
        } else {
          var result133 = null;
          this._pos = savedPos26;
        }
      } else {
        var result133 = null;
        this._pos = savedPos26;
      }
      var result132 = result133 !== null
        ? (function($1, $2) {  return $1;  }).apply(null, result133)
        : null;
      
      
      
      this._cache[cacheKey] = {
        nextPos: this._pos,
        result:  result132
      };
      return result132;
    },
    
    _parse_dot: function(context) {
      var cacheKey = "dot" + '@' + this._pos;
      var cachedResult = this._cache[cacheKey];
      if (cachedResult) {
        this._pos = cachedResult.nextPos;
        return cachedResult.result;
      }
      
      var pos = this._pos;
      
      
      var savedPos27 = this._pos;
      if (this._input.substr(this._pos, 1) === ".") {
        var result138 = ".";
        this._pos += 1;
      } else {
        var result138 = null;
        if (context.reportMatchFailures) {
          this._matchFailed(this._quoteString("."));
        }
      }
      if (result138 !== null) {
        var result139 = this._parse___(context);
        if (result139 !== null) {
          var result137 = [result138, result139];
        } else {
          var result137 = null;
          this._pos = savedPos27;
        }
      } else {
        var result137 = null;
        this._pos = savedPos27;
      }
      var result136 = result137 !== null
        ? (function($1, $2) {  return $1;  }).apply(null, result137)
        : null;
      
      
      
      this._cache[cacheKey] = {
        nextPos: this._pos,
        result:  result136
      };
      return result136;
    },
    
    _parse_identifier: function(context) {
      var cacheKey = "identifier" + '@' + this._pos;
      var cachedResult = this._cache[cacheKey];
      if (cachedResult) {
        this._pos = cachedResult.nextPos;
        return cachedResult.result;
      }
      
      var pos = this._pos;
      
      var savedReportMatchFailures = context.reportMatchFailures;
      context.reportMatchFailures = false;
      var savedPos28 = this._pos;
      var result152 = this._parse_letter(context);
      if (result152 !== null) {
        var result142 = result152;
      } else {
        if (this._input.substr(this._pos, 1) === "_") {
          var result151 = "_";
          this._pos += 1;
        } else {
          var result151 = null;
          if (context.reportMatchFailures) {
            this._matchFailed(this._quoteString("_"));
          }
        }
        if (result151 !== null) {
          var result142 = result151;
        } else {
          if (this._input.substr(this._pos, 1) === "$") {
            var result150 = "$";
            this._pos += 1;
          } else {
            var result150 = null;
            if (context.reportMatchFailures) {
              this._matchFailed(this._quoteString("$"));
            }
          }
          if (result150 !== null) {
            var result142 = result150;
          } else {
            var result142 = null;;
          };
        };
      }
      if (result142 !== null) {
        var result143 = [];
        var result149 = this._parse_letter(context);
        if (result149 !== null) {
          var result145 = result149;
        } else {
          var result148 = this._parse_digit(context);
          if (result148 !== null) {
            var result145 = result148;
          } else {
            if (this._input.substr(this._pos, 1) === "_") {
              var result147 = "_";
              this._pos += 1;
            } else {
              var result147 = null;
              if (context.reportMatchFailures) {
                this._matchFailed(this._quoteString("_"));
              }
            }
            if (result147 !== null) {
              var result145 = result147;
            } else {
              if (this._input.substr(this._pos, 1) === "$") {
                var result146 = "$";
                this._pos += 1;
              } else {
                var result146 = null;
                if (context.reportMatchFailures) {
                  this._matchFailed(this._quoteString("$"));
                }
              }
              if (result146 !== null) {
                var result145 = result146;
              } else {
                var result145 = null;;
              };
            };
          };
        }
        while (result145 !== null) {
          result143.push(result145);
          var result149 = this._parse_letter(context);
          if (result149 !== null) {
            var result145 = result149;
          } else {
            var result148 = this._parse_digit(context);
            if (result148 !== null) {
              var result145 = result148;
            } else {
              if (this._input.substr(this._pos, 1) === "_") {
                var result147 = "_";
                this._pos += 1;
              } else {
                var result147 = null;
                if (context.reportMatchFailures) {
                  this._matchFailed(this._quoteString("_"));
                }
              }
              if (result147 !== null) {
                var result145 = result147;
              } else {
                if (this._input.substr(this._pos, 1) === "$") {
                  var result146 = "$";
                  this._pos += 1;
                } else {
                  var result146 = null;
                  if (context.reportMatchFailures) {
                    this._matchFailed(this._quoteString("$"));
                  }
                }
                if (result146 !== null) {
                  var result145 = result146;
                } else {
                  var result145 = null;;
                };
              };
            };
          }
        }
        if (result143 !== null) {
          var result144 = this._parse___(context);
          if (result144 !== null) {
            var result141 = [result142, result143, result144];
          } else {
            var result141 = null;
            this._pos = savedPos28;
          }
        } else {
          var result141 = null;
          this._pos = savedPos28;
        }
      } else {
        var result141 = null;
        this._pos = savedPos28;
      }
      var result140 = result141 !== null
        ? (function($1, $2, $3) { 
              return $1 + $2.join("");
             }).apply(null, result141)
        : null;
      context.reportMatchFailures = savedReportMatchFailures;
      if (context.reportMatchFailures && result140 === null) {
        this._matchFailed("identifier");
      }
      
      this._cache[cacheKey] = {
        nextPos: this._pos,
        result:  result140
      };
      return result140;
    },
    
    _parse_literal: function(context) {
      var cacheKey = "literal" + '@' + this._pos;
      var cachedResult = this._cache[cacheKey];
      if (cachedResult) {
        this._pos = cachedResult.nextPos;
        return cachedResult.result;
      }
      
      var pos = this._pos;
      
      var savedReportMatchFailures = context.reportMatchFailures;
      context.reportMatchFailures = false;
      var savedPos29 = this._pos;
      var result158 = this._parse_doubleQuotedLiteral(context);
      if (result158 !== null) {
        var result155 = result158;
      } else {
        var result157 = this._parse_singleQuotedLiteral(context);
        if (result157 !== null) {
          var result155 = result157;
        } else {
          var result155 = null;;
        };
      }
      if (result155 !== null) {
        var result156 = this._parse___(context);
        if (result156 !== null) {
          var result154 = [result155, result156];
        } else {
          var result154 = null;
          this._pos = savedPos29;
        }
      } else {
        var result154 = null;
        this._pos = savedPos29;
      }
      var result153 = result154 !== null
        ? (function($1, $2) {  return $1;  }).apply(null, result154)
        : null;
      context.reportMatchFailures = savedReportMatchFailures;
      if (context.reportMatchFailures && result153 === null) {
        this._matchFailed("literal");
      }
      
      this._cache[cacheKey] = {
        nextPos: this._pos,
        result:  result153
      };
      return result153;
    },
    
    _parse_doubleQuotedLiteral: function(context) {
      var cacheKey = "doubleQuotedLiteral" + '@' + this._pos;
      var cachedResult = this._cache[cacheKey];
      if (cachedResult) {
        this._pos = cachedResult.nextPos;
        return cachedResult.result;
      }
      
      var pos = this._pos;
      
      
      var savedPos30 = this._pos;
      if (this._input.substr(this._pos, 1) === "\"") {
        var result161 = "\"";
        this._pos += 1;
      } else {
        var result161 = null;
        if (context.reportMatchFailures) {
          this._matchFailed(this._quoteString("\""));
        }
      }
      if (result161 !== null) {
        var result162 = [];
        var result164 = this._parse_doubleQuotedCharacter(context);
        while (result164 !== null) {
          result162.push(result164);
          var result164 = this._parse_doubleQuotedCharacter(context);
        }
        if (result162 !== null) {
          if (this._input.substr(this._pos, 1) === "\"") {
            var result163 = "\"";
            this._pos += 1;
          } else {
            var result163 = null;
            if (context.reportMatchFailures) {
              this._matchFailed(this._quoteString("\""));
            }
          }
          if (result163 !== null) {
            var result160 = [result161, result162, result163];
          } else {
            var result160 = null;
            this._pos = savedPos30;
          }
        } else {
          var result160 = null;
          this._pos = savedPos30;
        }
      } else {
        var result160 = null;
        this._pos = savedPos30;
      }
      var result159 = result160 !== null
        ? (function($1, $2, $3) {  return $2.join("");  }).apply(null, result160)
        : null;
      
      
      
      this._cache[cacheKey] = {
        nextPos: this._pos,
        result:  result159
      };
      return result159;
    },
    
    _parse_doubleQuotedCharacter: function(context) {
      var cacheKey = "doubleQuotedCharacter" + '@' + this._pos;
      var cachedResult = this._cache[cacheKey];
      if (cachedResult) {
        this._pos = cachedResult.nextPos;
        return cachedResult.result;
      }
      
      var pos = this._pos;
      
      
      var result171 = this._parse_simpleDoubleQuotedCharacter(context);
      if (result171 !== null) {
        var result165 = result171;
      } else {
        var result170 = this._parse_simpleEscapeSequence(context);
        if (result170 !== null) {
          var result165 = result170;
        } else {
          var result169 = this._parse_zeroEscapeSequence(context);
          if (result169 !== null) {
            var result165 = result169;
          } else {
            var result168 = this._parse_hexEscapeSequence(context);
            if (result168 !== null) {
              var result165 = result168;
            } else {
              var result167 = this._parse_unicodeEscapeSequence(context);
              if (result167 !== null) {
                var result165 = result167;
              } else {
                var result166 = this._parse_eolEscapeSequence(context);
                if (result166 !== null) {
                  var result165 = result166;
                } else {
                  var result165 = null;;
                };
              };
            };
          };
        };
      }
      
      
      
      this._cache[cacheKey] = {
        nextPos: this._pos,
        result:  result165
      };
      return result165;
    },
    
    _parse_simpleDoubleQuotedCharacter: function(context) {
      var cacheKey = "simpleDoubleQuotedCharacter" + '@' + this._pos;
      var cachedResult = this._cache[cacheKey];
      if (cachedResult) {
        this._pos = cachedResult.nextPos;
        return cachedResult.result;
      }
      
      var pos = this._pos;
      
      
      var savedPos31 = this._pos;
      var savedPos32 = this._pos;
      var savedReportMatchFailuresVar1 = context.reportMatchFailures;
      context.reportMatchFailures = false;
      if (this._input.substr(this._pos, 1) === "\"") {
        var result179 = "\"";
        this._pos += 1;
      } else {
        var result179 = null;
        if (context.reportMatchFailures) {
          this._matchFailed(this._quoteString("\""));
        }
      }
      if (result179 !== null) {
        var result176 = result179;
      } else {
        if (this._input.substr(this._pos, 1) === "\\") {
          var result178 = "\\";
          this._pos += 1;
        } else {
          var result178 = null;
          if (context.reportMatchFailures) {
            this._matchFailed(this._quoteString("\\"));
          }
        }
        if (result178 !== null) {
          var result176 = result178;
        } else {
          var result177 = this._parse_eolChar(context);
          if (result177 !== null) {
            var result176 = result177;
          } else {
            var result176 = null;;
          };
        };
      }
      context.reportMatchFailures = savedReportMatchFailuresVar1;
      if (result176 === null) {
        var result174 = '';
      } else {
        var result174 = null;
        this._pos = savedPos32;
      }
      if (result174 !== null) {
        if (this._input.length > this._pos) {
          var result175 = this._input.charAt(this._pos);
          this._pos++;
        } else {
          var result175 = null;
          if (context.reportMatchFailures) {
            this._matchFailed('any character');
          }
        }
        if (result175 !== null) {
          var result173 = [result174, result175];
        } else {
          var result173 = null;
          this._pos = savedPos31;
        }
      } else {
        var result173 = null;
        this._pos = savedPos31;
      }
      var result172 = result173 !== null
        ? (function($1, $2) {  return $2;  }).apply(null, result173)
        : null;
      
      
      
      this._cache[cacheKey] = {
        nextPos: this._pos,
        result:  result172
      };
      return result172;
    },
    
    _parse_singleQuotedLiteral: function(context) {
      var cacheKey = "singleQuotedLiteral" + '@' + this._pos;
      var cachedResult = this._cache[cacheKey];
      if (cachedResult) {
        this._pos = cachedResult.nextPos;
        return cachedResult.result;
      }
      
      var pos = this._pos;
      
      
      var savedPos33 = this._pos;
      if (this._input.substr(this._pos, 1) === "'") {
        var result182 = "'";
        this._pos += 1;
      } else {
        var result182 = null;
        if (context.reportMatchFailures) {
          this._matchFailed(this._quoteString("'"));
        }
      }
      if (result182 !== null) {
        var result183 = [];
        var result185 = this._parse_singleQuotedCharacter(context);
        while (result185 !== null) {
          result183.push(result185);
          var result185 = this._parse_singleQuotedCharacter(context);
        }
        if (result183 !== null) {
          if (this._input.substr(this._pos, 1) === "'") {
            var result184 = "'";
            this._pos += 1;
          } else {
            var result184 = null;
            if (context.reportMatchFailures) {
              this._matchFailed(this._quoteString("'"));
            }
          }
          if (result184 !== null) {
            var result181 = [result182, result183, result184];
          } else {
            var result181 = null;
            this._pos = savedPos33;
          }
        } else {
          var result181 = null;
          this._pos = savedPos33;
        }
      } else {
        var result181 = null;
        this._pos = savedPos33;
      }
      var result180 = result181 !== null
        ? (function($1, $2, $3) {  return $2.join("");  }).apply(null, result181)
        : null;
      
      
      
      this._cache[cacheKey] = {
        nextPos: this._pos,
        result:  result180
      };
      return result180;
    },
    
    _parse_singleQuotedCharacter: function(context) {
      var cacheKey = "singleQuotedCharacter" + '@' + this._pos;
      var cachedResult = this._cache[cacheKey];
      if (cachedResult) {
        this._pos = cachedResult.nextPos;
        return cachedResult.result;
      }
      
      var pos = this._pos;
      
      
      var result192 = this._parse_simpleSingleQuotedCharacter(context);
      if (result192 !== null) {
        var result186 = result192;
      } else {
        var result191 = this._parse_simpleEscapeSequence(context);
        if (result191 !== null) {
          var result186 = result191;
        } else {
          var result190 = this._parse_zeroEscapeSequence(context);
          if (result190 !== null) {
            var result186 = result190;
          } else {
            var result189 = this._parse_hexEscapeSequence(context);
            if (result189 !== null) {
              var result186 = result189;
            } else {
              var result188 = this._parse_unicodeEscapeSequence(context);
              if (result188 !== null) {
                var result186 = result188;
              } else {
                var result187 = this._parse_eolEscapeSequence(context);
                if (result187 !== null) {
                  var result186 = result187;
                } else {
                  var result186 = null;;
                };
              };
            };
          };
        };
      }
      
      
      
      this._cache[cacheKey] = {
        nextPos: this._pos,
        result:  result186
      };
      return result186;
    },
    
    _parse_simpleSingleQuotedCharacter: function(context) {
      var cacheKey = "simpleSingleQuotedCharacter" + '@' + this._pos;
      var cachedResult = this._cache[cacheKey];
      if (cachedResult) {
        this._pos = cachedResult.nextPos;
        return cachedResult.result;
      }
      
      var pos = this._pos;
      
      
      var savedPos34 = this._pos;
      var savedPos35 = this._pos;
      var savedReportMatchFailuresVar2 = context.reportMatchFailures;
      context.reportMatchFailures = false;
      if (this._input.substr(this._pos, 1) === "'") {
        var result200 = "'";
        this._pos += 1;
      } else {
        var result200 = null;
        if (context.reportMatchFailures) {
          this._matchFailed(this._quoteString("'"));
        }
      }
      if (result200 !== null) {
        var result197 = result200;
      } else {
        if (this._input.substr(this._pos, 1) === "\\") {
          var result199 = "\\";
          this._pos += 1;
        } else {
          var result199 = null;
          if (context.reportMatchFailures) {
            this._matchFailed(this._quoteString("\\"));
          }
        }
        if (result199 !== null) {
          var result197 = result199;
        } else {
          var result198 = this._parse_eolChar(context);
          if (result198 !== null) {
            var result197 = result198;
          } else {
            var result197 = null;;
          };
        };
      }
      context.reportMatchFailures = savedReportMatchFailuresVar2;
      if (result197 === null) {
        var result195 = '';
      } else {
        var result195 = null;
        this._pos = savedPos35;
      }
      if (result195 !== null) {
        if (this._input.length > this._pos) {
          var result196 = this._input.charAt(this._pos);
          this._pos++;
        } else {
          var result196 = null;
          if (context.reportMatchFailures) {
            this._matchFailed('any character');
          }
        }
        if (result196 !== null) {
          var result194 = [result195, result196];
        } else {
          var result194 = null;
          this._pos = savedPos34;
        }
      } else {
        var result194 = null;
        this._pos = savedPos34;
      }
      var result193 = result194 !== null
        ? (function($1, $2) {  return $2;  }).apply(null, result194)
        : null;
      
      
      
      this._cache[cacheKey] = {
        nextPos: this._pos,
        result:  result193
      };
      return result193;
    },
    
    _parse_class: function(context) {
      var cacheKey = "class" + '@' + this._pos;
      var cachedResult = this._cache[cacheKey];
      if (cachedResult) {
        this._pos = cachedResult.nextPos;
        return cachedResult.result;
      }
      
      var pos = this._pos;
      
      var savedReportMatchFailures = context.reportMatchFailures;
      context.reportMatchFailures = false;
      var savedPos36 = this._pos;
      if (this._input.substr(this._pos, 1) === "[") {
        var result203 = "[";
        this._pos += 1;
      } else {
        var result203 = null;
        if (context.reportMatchFailures) {
          this._matchFailed(this._quoteString("["));
        }
      }
      if (result203 !== null) {
        if (this._input.substr(this._pos, 1) === "^") {
          var result211 = "^";
          this._pos += 1;
        } else {
          var result211 = null;
          if (context.reportMatchFailures) {
            this._matchFailed(this._quoteString("^"));
          }
        }
        var result204 = result211 !== null ? result211 : '';
        if (result204 !== null) {
          var result205 = [];
          var result210 = this._parse_classCharacterRange(context);
          if (result210 !== null) {
            var result208 = result210;
          } else {
            var result209 = this._parse_classCharacter(context);
            if (result209 !== null) {
              var result208 = result209;
            } else {
              var result208 = null;;
            };
          }
          while (result208 !== null) {
            result205.push(result208);
            var result210 = this._parse_classCharacterRange(context);
            if (result210 !== null) {
              var result208 = result210;
            } else {
              var result209 = this._parse_classCharacter(context);
              if (result209 !== null) {
                var result208 = result209;
              } else {
                var result208 = null;;
              };
            }
          }
          if (result205 !== null) {
            if (this._input.substr(this._pos, 1) === "]") {
              var result206 = "]";
              this._pos += 1;
            } else {
              var result206 = null;
              if (context.reportMatchFailures) {
                this._matchFailed(this._quoteString("]"));
              }
            }
            if (result206 !== null) {
              var result207 = this._parse___(context);
              if (result207 !== null) {
                var result202 = [result203, result204, result205, result206, result207];
              } else {
                var result202 = null;
                this._pos = savedPos36;
              }
            } else {
              var result202 = null;
              this._pos = savedPos36;
            }
          } else {
            var result202 = null;
            this._pos = savedPos36;
          }
        } else {
          var result202 = null;
          this._pos = savedPos36;
        }
      } else {
        var result202 = null;
        this._pos = savedPos36;
      }
      var result201 = result202 !== null
        ? (function($1, $2, $3, $4, $5) { 
              parts = PEG.ArrayUtils.map($3, function(part) { return part.data; });
              rawText = "["
                + $2
                + PEG.ArrayUtils.map($3, function(part) {
                    return part.rawText;
                  }).join("")
                + "]";
        
              return {
                type:     "class",
                inverted: $2 === "^",
                parts:    parts,
                // FIXME: Get the raw text from the input directly.
                rawText:  rawText
              };
             }).apply(null, result202)
        : null;
      context.reportMatchFailures = savedReportMatchFailures;
      if (context.reportMatchFailures && result201 === null) {
        this._matchFailed("character class");
      }
      
      this._cache[cacheKey] = {
        nextPos: this._pos,
        result:  result201
      };
      return result201;
    },
    
    _parse_classCharacterRange: function(context) {
      var cacheKey = "classCharacterRange" + '@' + this._pos;
      var cachedResult = this._cache[cacheKey];
      if (cachedResult) {
        this._pos = cachedResult.nextPos;
        return cachedResult.result;
      }
      
      var pos = this._pos;
      
      
      var savedPos37 = this._pos;
      var result214 = this._parse_classCharacter(context);
      if (result214 !== null) {
        if (this._input.substr(this._pos, 1) === "-") {
          var result215 = "-";
          this._pos += 1;
        } else {
          var result215 = null;
          if (context.reportMatchFailures) {
            this._matchFailed(this._quoteString("-"));
          }
        }
        if (result215 !== null) {
          var result216 = this._parse_classCharacter(context);
          if (result216 !== null) {
            var result213 = [result214, result215, result216];
          } else {
            var result213 = null;
            this._pos = savedPos37;
          }
        } else {
          var result213 = null;
          this._pos = savedPos37;
        }
      } else {
        var result213 = null;
        this._pos = savedPos37;
      }
      var result212 = result213 !== null
        ? (function($1, $2, $3) { 
              if ($1.data.charCodeAt(0) > $3.data.charCodeAt(0)) {
                throw new this.SyntaxError(
                  "Invalid character range: " + $1.rawText + "-" + $3.rawText + "."
                );
              }
        
              return {
                data:    [$1.data, $3.data],
                // FIXME: Get the raw text from the input directly.
                rawText: $1.rawText + "-" + $3.rawText
              }
             }).apply(null, result213)
        : null;
      
      
      
      this._cache[cacheKey] = {
        nextPos: this._pos,
        result:  result212
      };
      return result212;
    },
    
    _parse_classCharacter: function(context) {
      var cacheKey = "classCharacter" + '@' + this._pos;
      var cachedResult = this._cache[cacheKey];
      if (cachedResult) {
        this._pos = cachedResult.nextPos;
        return cachedResult.result;
      }
      
      var pos = this._pos;
      
      
      var result218 = this._parse_bracketDelimitedCharacter(context);
      var result217 = result218 !== null
        ? (function($1) { 
              return {
                data:    $1,
                // FIXME: Get the raw text from the input directly.
                rawText: PEG.RegExpUtils.quoteForClass($1)
              };
             })(result218)
        : null;
      
      
      
      this._cache[cacheKey] = {
        nextPos: this._pos,
        result:  result217
      };
      return result217;
    },
    
    _parse_bracketDelimitedCharacter: function(context) {
      var cacheKey = "bracketDelimitedCharacter" + '@' + this._pos;
      var cachedResult = this._cache[cacheKey];
      if (cachedResult) {
        this._pos = cachedResult.nextPos;
        return cachedResult.result;
      }
      
      var pos = this._pos;
      
      
      var result225 = this._parse_simpleBracketDelimitedCharacter(context);
      if (result225 !== null) {
        var result219 = result225;
      } else {
        var result224 = this._parse_simpleEscapeSequence(context);
        if (result224 !== null) {
          var result219 = result224;
        } else {
          var result223 = this._parse_zeroEscapeSequence(context);
          if (result223 !== null) {
            var result219 = result223;
          } else {
            var result222 = this._parse_hexEscapeSequence(context);
            if (result222 !== null) {
              var result219 = result222;
            } else {
              var result221 = this._parse_unicodeEscapeSequence(context);
              if (result221 !== null) {
                var result219 = result221;
              } else {
                var result220 = this._parse_eolEscapeSequence(context);
                if (result220 !== null) {
                  var result219 = result220;
                } else {
                  var result219 = null;;
                };
              };
            };
          };
        };
      }
      
      
      
      this._cache[cacheKey] = {
        nextPos: this._pos,
        result:  result219
      };
      return result219;
    },
    
    _parse_simpleBracketDelimitedCharacter: function(context) {
      var cacheKey = "simpleBracketDelimitedCharacter" + '@' + this._pos;
      var cachedResult = this._cache[cacheKey];
      if (cachedResult) {
        this._pos = cachedResult.nextPos;
        return cachedResult.result;
      }
      
      var pos = this._pos;
      
      
      var savedPos38 = this._pos;
      var savedPos39 = this._pos;
      var savedReportMatchFailuresVar3 = context.reportMatchFailures;
      context.reportMatchFailures = false;
      if (this._input.substr(this._pos, 1) === "]") {
        var result233 = "]";
        this._pos += 1;
      } else {
        var result233 = null;
        if (context.reportMatchFailures) {
          this._matchFailed(this._quoteString("]"));
        }
      }
      if (result233 !== null) {
        var result230 = result233;
      } else {
        if (this._input.substr(this._pos, 1) === "\\") {
          var result232 = "\\";
          this._pos += 1;
        } else {
          var result232 = null;
          if (context.reportMatchFailures) {
            this._matchFailed(this._quoteString("\\"));
          }
        }
        if (result232 !== null) {
          var result230 = result232;
        } else {
          var result231 = this._parse_eolChar(context);
          if (result231 !== null) {
            var result230 = result231;
          } else {
            var result230 = null;;
          };
        };
      }
      context.reportMatchFailures = savedReportMatchFailuresVar3;
      if (result230 === null) {
        var result228 = '';
      } else {
        var result228 = null;
        this._pos = savedPos39;
      }
      if (result228 !== null) {
        if (this._input.length > this._pos) {
          var result229 = this._input.charAt(this._pos);
          this._pos++;
        } else {
          var result229 = null;
          if (context.reportMatchFailures) {
            this._matchFailed('any character');
          }
        }
        if (result229 !== null) {
          var result227 = [result228, result229];
        } else {
          var result227 = null;
          this._pos = savedPos38;
        }
      } else {
        var result227 = null;
        this._pos = savedPos38;
      }
      var result226 = result227 !== null
        ? (function($1, $2) {  return $2;  }).apply(null, result227)
        : null;
      
      
      
      this._cache[cacheKey] = {
        nextPos: this._pos,
        result:  result226
      };
      return result226;
    },
    
    _parse_simpleEscapeSequence: function(context) {
      var cacheKey = "simpleEscapeSequence" + '@' + this._pos;
      var cachedResult = this._cache[cacheKey];
      if (cachedResult) {
        this._pos = cachedResult.nextPos;
        return cachedResult.result;
      }
      
      var pos = this._pos;
      
      
      var savedPos40 = this._pos;
      if (this._input.substr(this._pos, 1) === "\\") {
        var result236 = "\\";
        this._pos += 1;
      } else {
        var result236 = null;
        if (context.reportMatchFailures) {
          this._matchFailed(this._quoteString("\\"));
        }
      }
      if (result236 !== null) {
        var savedPos41 = this._pos;
        var savedReportMatchFailuresVar4 = context.reportMatchFailures;
        context.reportMatchFailures = false;
        var result243 = this._parse_digit(context);
        if (result243 !== null) {
          var result239 = result243;
        } else {
          if (this._input.substr(this._pos, 1) === "x") {
            var result242 = "x";
            this._pos += 1;
          } else {
            var result242 = null;
            if (context.reportMatchFailures) {
              this._matchFailed(this._quoteString("x"));
            }
          }
          if (result242 !== null) {
            var result239 = result242;
          } else {
            if (this._input.substr(this._pos, 1) === "u") {
              var result241 = "u";
              this._pos += 1;
            } else {
              var result241 = null;
              if (context.reportMatchFailures) {
                this._matchFailed(this._quoteString("u"));
              }
            }
            if (result241 !== null) {
              var result239 = result241;
            } else {
              var result240 = this._parse_eolChar(context);
              if (result240 !== null) {
                var result239 = result240;
              } else {
                var result239 = null;;
              };
            };
          };
        }
        context.reportMatchFailures = savedReportMatchFailuresVar4;
        if (result239 === null) {
          var result237 = '';
        } else {
          var result237 = null;
          this._pos = savedPos41;
        }
        if (result237 !== null) {
          if (this._input.length > this._pos) {
            var result238 = this._input.charAt(this._pos);
            this._pos++;
          } else {
            var result238 = null;
            if (context.reportMatchFailures) {
              this._matchFailed('any character');
            }
          }
          if (result238 !== null) {
            var result235 = [result236, result237, result238];
          } else {
            var result235 = null;
            this._pos = savedPos40;
          }
        } else {
          var result235 = null;
          this._pos = savedPos40;
        }
      } else {
        var result235 = null;
        this._pos = savedPos40;
      }
      var result234 = result235 !== null
        ? (function($1, $2, $3) { 
              return $3
                .replace("b", "\b")
                .replace("f", "\f")
                .replace("n", "\n")
                .replace("r", "\r")
                .replace("t", "\t")
                .replace("v", "\x0B") // IE does not recognize "\v".
             }).apply(null, result235)
        : null;
      
      
      
      this._cache[cacheKey] = {
        nextPos: this._pos,
        result:  result234
      };
      return result234;
    },
    
    _parse_zeroEscapeSequence: function(context) {
      var cacheKey = "zeroEscapeSequence" + '@' + this._pos;
      var cachedResult = this._cache[cacheKey];
      if (cachedResult) {
        this._pos = cachedResult.nextPos;
        return cachedResult.result;
      }
      
      var pos = this._pos;
      
      
      var savedPos42 = this._pos;
      if (this._input.substr(this._pos, 2) === "\\0") {
        var result246 = "\\0";
        this._pos += 2;
      } else {
        var result246 = null;
        if (context.reportMatchFailures) {
          this._matchFailed(this._quoteString("\\0"));
        }
      }
      if (result246 !== null) {
        var savedPos43 = this._pos;
        var savedReportMatchFailuresVar5 = context.reportMatchFailures;
        context.reportMatchFailures = false;
        var result248 = this._parse_digit(context);
        context.reportMatchFailures = savedReportMatchFailuresVar5;
        if (result248 === null) {
          var result247 = '';
        } else {
          var result247 = null;
          this._pos = savedPos43;
        }
        if (result247 !== null) {
          var result245 = [result246, result247];
        } else {
          var result245 = null;
          this._pos = savedPos42;
        }
      } else {
        var result245 = null;
        this._pos = savedPos42;
      }
      var result244 = result245 !== null
        ? (function($1, $2) {  return "\0";  }).apply(null, result245)
        : null;
      
      
      
      this._cache[cacheKey] = {
        nextPos: this._pos,
        result:  result244
      };
      return result244;
    },
    
    _parse_hexEscapeSequence: function(context) {
      var cacheKey = "hexEscapeSequence" + '@' + this._pos;
      var cachedResult = this._cache[cacheKey];
      if (cachedResult) {
        this._pos = cachedResult.nextPos;
        return cachedResult.result;
      }
      
      var pos = this._pos;
      
      
      var savedPos44 = this._pos;
      if (this._input.substr(this._pos, 2) === "\\x") {
        var result251 = "\\x";
        this._pos += 2;
      } else {
        var result251 = null;
        if (context.reportMatchFailures) {
          this._matchFailed(this._quoteString("\\x"));
        }
      }
      if (result251 !== null) {
        var result252 = this._parse_hexDigit(context);
        if (result252 !== null) {
          var result253 = this._parse_hexDigit(context);
          if (result253 !== null) {
            var result250 = [result251, result252, result253];
          } else {
            var result250 = null;
            this._pos = savedPos44;
          }
        } else {
          var result250 = null;
          this._pos = savedPos44;
        }
      } else {
        var result250 = null;
        this._pos = savedPos44;
      }
      var result249 = result250 !== null
        ? (function($1, $2, $3) { 
              return String.fromCharCode(parseInt("0x" + $2 + $3));
             }).apply(null, result250)
        : null;
      
      
      
      this._cache[cacheKey] = {
        nextPos: this._pos,
        result:  result249
      };
      return result249;
    },
    
    _parse_unicodeEscapeSequence: function(context) {
      var cacheKey = "unicodeEscapeSequence" + '@' + this._pos;
      var cachedResult = this._cache[cacheKey];
      if (cachedResult) {
        this._pos = cachedResult.nextPos;
        return cachedResult.result;
      }
      
      var pos = this._pos;
      
      
      var savedPos45 = this._pos;
      if (this._input.substr(this._pos, 2) === "\\u") {
        var result256 = "\\u";
        this._pos += 2;
      } else {
        var result256 = null;
        if (context.reportMatchFailures) {
          this._matchFailed(this._quoteString("\\u"));
        }
      }
      if (result256 !== null) {
        var result257 = this._parse_hexDigit(context);
        if (result257 !== null) {
          var result258 = this._parse_hexDigit(context);
          if (result258 !== null) {
            var result259 = this._parse_hexDigit(context);
            if (result259 !== null) {
              var result260 = this._parse_hexDigit(context);
              if (result260 !== null) {
                var result255 = [result256, result257, result258, result259, result260];
              } else {
                var result255 = null;
                this._pos = savedPos45;
              }
            } else {
              var result255 = null;
              this._pos = savedPos45;
            }
          } else {
            var result255 = null;
            this._pos = savedPos45;
          }
        } else {
          var result255 = null;
          this._pos = savedPos45;
        }
      } else {
        var result255 = null;
        this._pos = savedPos45;
      }
      var result254 = result255 !== null
        ? (function($1, $2, $3, $4, $5) { 
              return String.fromCharCode(parseInt("0x" + $2 + $3 + $4 + $5));
             }).apply(null, result255)
        : null;
      
      
      
      this._cache[cacheKey] = {
        nextPos: this._pos,
        result:  result254
      };
      return result254;
    },
    
    _parse_eolEscapeSequence: function(context) {
      var cacheKey = "eolEscapeSequence" + '@' + this._pos;
      var cachedResult = this._cache[cacheKey];
      if (cachedResult) {
        this._pos = cachedResult.nextPos;
        return cachedResult.result;
      }
      
      var pos = this._pos;
      
      
      var savedPos46 = this._pos;
      if (this._input.substr(this._pos, 1) === "\\") {
        var result263 = "\\";
        this._pos += 1;
      } else {
        var result263 = null;
        if (context.reportMatchFailures) {
          this._matchFailed(this._quoteString("\\"));
        }
      }
      if (result263 !== null) {
        var result264 = this._parse_eol(context);
        if (result264 !== null) {
          var result262 = [result263, result264];
        } else {
          var result262 = null;
          this._pos = savedPos46;
        }
      } else {
        var result262 = null;
        this._pos = savedPos46;
      }
      var result261 = result262 !== null
        ? (function($1, $2) {  return $2;  }).apply(null, result262)
        : null;
      
      
      
      this._cache[cacheKey] = {
        nextPos: this._pos,
        result:  result261
      };
      return result261;
    },
    
    _parse_digit: function(context) {
      var cacheKey = "digit" + '@' + this._pos;
      var cachedResult = this._cache[cacheKey];
      if (cachedResult) {
        this._pos = cachedResult.nextPos;
        return cachedResult.result;
      }
      
      var pos = this._pos;
      
      
      if (this._input.substr(this._pos).match(/^[0-9]/) !== null) {
        var result265 = this._input.charAt(this._pos);
        this._pos++;
      } else {
        var result265 = null;
        if (context.reportMatchFailures) {
          this._matchFailed("[0-9]");
        }
      }
      
      
      
      this._cache[cacheKey] = {
        nextPos: this._pos,
        result:  result265
      };
      return result265;
    },
    
    _parse_hexDigit: function(context) {
      var cacheKey = "hexDigit" + '@' + this._pos;
      var cachedResult = this._cache[cacheKey];
      if (cachedResult) {
        this._pos = cachedResult.nextPos;
        return cachedResult.result;
      }
      
      var pos = this._pos;
      
      
      if (this._input.substr(this._pos).match(/^[0-9a-fA-F]/) !== null) {
        var result266 = this._input.charAt(this._pos);
        this._pos++;
      } else {
        var result266 = null;
        if (context.reportMatchFailures) {
          this._matchFailed("[0-9a-fA-F]");
        }
      }
      
      
      
      this._cache[cacheKey] = {
        nextPos: this._pos,
        result:  result266
      };
      return result266;
    },
    
    _parse_letter: function(context) {
      var cacheKey = "letter" + '@' + this._pos;
      var cachedResult = this._cache[cacheKey];
      if (cachedResult) {
        this._pos = cachedResult.nextPos;
        return cachedResult.result;
      }
      
      var pos = this._pos;
      
      
      var result269 = this._parse_lowerCaseLetter(context);
      if (result269 !== null) {
        var result267 = result269;
      } else {
        var result268 = this._parse_upperCaseLetter(context);
        if (result268 !== null) {
          var result267 = result268;
        } else {
          var result267 = null;;
        };
      }
      
      
      
      this._cache[cacheKey] = {
        nextPos: this._pos,
        result:  result267
      };
      return result267;
    },
    
    _parse_lowerCaseLetter: function(context) {
      var cacheKey = "lowerCaseLetter" + '@' + this._pos;
      var cachedResult = this._cache[cacheKey];
      if (cachedResult) {
        this._pos = cachedResult.nextPos;
        return cachedResult.result;
      }
      
      var pos = this._pos;
      
      
      if (this._input.substr(this._pos).match(/^[a-z]/) !== null) {
        var result270 = this._input.charAt(this._pos);
        this._pos++;
      } else {
        var result270 = null;
        if (context.reportMatchFailures) {
          this._matchFailed("[a-z]");
        }
      }
      
      
      
      this._cache[cacheKey] = {
        nextPos: this._pos,
        result:  result270
      };
      return result270;
    },
    
    _parse_upperCaseLetter: function(context) {
      var cacheKey = "upperCaseLetter" + '@' + this._pos;
      var cachedResult = this._cache[cacheKey];
      if (cachedResult) {
        this._pos = cachedResult.nextPos;
        return cachedResult.result;
      }
      
      var pos = this._pos;
      
      
      if (this._input.substr(this._pos).match(/^[A-Z]/) !== null) {
        var result271 = this._input.charAt(this._pos);
        this._pos++;
      } else {
        var result271 = null;
        if (context.reportMatchFailures) {
          this._matchFailed("[A-Z]");
        }
      }
      
      
      
      this._cache[cacheKey] = {
        nextPos: this._pos,
        result:  result271
      };
      return result271;
    },
    
    _parse___: function(context) {
      var cacheKey = "__" + '@' + this._pos;
      var cachedResult = this._cache[cacheKey];
      if (cachedResult) {
        this._pos = cachedResult.nextPos;
        return cachedResult.result;
      }
      
      var pos = this._pos;
      
      
      var result272 = [];
      var result276 = this._parse_whitespace(context);
      if (result276 !== null) {
        var result273 = result276;
      } else {
        var result275 = this._parse_eol(context);
        if (result275 !== null) {
          var result273 = result275;
        } else {
          var result274 = this._parse_comment(context);
          if (result274 !== null) {
            var result273 = result274;
          } else {
            var result273 = null;;
          };
        };
      }
      while (result273 !== null) {
        result272.push(result273);
        var result276 = this._parse_whitespace(context);
        if (result276 !== null) {
          var result273 = result276;
        } else {
          var result275 = this._parse_eol(context);
          if (result275 !== null) {
            var result273 = result275;
          } else {
            var result274 = this._parse_comment(context);
            if (result274 !== null) {
              var result273 = result274;
            } else {
              var result273 = null;;
            };
          };
        }
      }
      
      
      
      this._cache[cacheKey] = {
        nextPos: this._pos,
        result:  result272
      };
      return result272;
    },
    
    _parse_comment: function(context) {
      var cacheKey = "comment" + '@' + this._pos;
      var cachedResult = this._cache[cacheKey];
      if (cachedResult) {
        this._pos = cachedResult.nextPos;
        return cachedResult.result;
      }
      
      var pos = this._pos;
      
      var savedReportMatchFailures = context.reportMatchFailures;
      context.reportMatchFailures = false;
      var result279 = this._parse_singleLineComment(context);
      if (result279 !== null) {
        var result277 = result279;
      } else {
        var result278 = this._parse_multiLineComment(context);
        if (result278 !== null) {
          var result277 = result278;
        } else {
          var result277 = null;;
        };
      }
      context.reportMatchFailures = savedReportMatchFailures;
      if (context.reportMatchFailures && result277 === null) {
        this._matchFailed("comment");
      }
      
      this._cache[cacheKey] = {
        nextPos: this._pos,
        result:  result277
      };
      return result277;
    },
    
    _parse_singleLineComment: function(context) {
      var cacheKey = "singleLineComment" + '@' + this._pos;
      var cachedResult = this._cache[cacheKey];
      if (cachedResult) {
        this._pos = cachedResult.nextPos;
        return cachedResult.result;
      }
      
      var pos = this._pos;
      
      
      var savedPos47 = this._pos;
      if (this._input.substr(this._pos, 2) === "//") {
        var result281 = "//";
        this._pos += 2;
      } else {
        var result281 = null;
        if (context.reportMatchFailures) {
          this._matchFailed(this._quoteString("//"));
        }
      }
      if (result281 !== null) {
        var result282 = [];
        var savedPos48 = this._pos;
        var savedPos49 = this._pos;
        var savedReportMatchFailuresVar6 = context.reportMatchFailures;
        context.reportMatchFailures = false;
        var result286 = this._parse_eolChar(context);
        context.reportMatchFailures = savedReportMatchFailuresVar6;
        if (result286 === null) {
          var result284 = '';
        } else {
          var result284 = null;
          this._pos = savedPos49;
        }
        if (result284 !== null) {
          if (this._input.length > this._pos) {
            var result285 = this._input.charAt(this._pos);
            this._pos++;
          } else {
            var result285 = null;
            if (context.reportMatchFailures) {
              this._matchFailed('any character');
            }
          }
          if (result285 !== null) {
            var result283 = [result284, result285];
          } else {
            var result283 = null;
            this._pos = savedPos48;
          }
        } else {
          var result283 = null;
          this._pos = savedPos48;
        }
        while (result283 !== null) {
          result282.push(result283);
          var savedPos48 = this._pos;
          var savedPos49 = this._pos;
          var savedReportMatchFailuresVar6 = context.reportMatchFailures;
          context.reportMatchFailures = false;
          var result286 = this._parse_eolChar(context);
          context.reportMatchFailures = savedReportMatchFailuresVar6;
          if (result286 === null) {
            var result284 = '';
          } else {
            var result284 = null;
            this._pos = savedPos49;
          }
          if (result284 !== null) {
            if (this._input.length > this._pos) {
              var result285 = this._input.charAt(this._pos);
              this._pos++;
            } else {
              var result285 = null;
              if (context.reportMatchFailures) {
                this._matchFailed('any character');
              }
            }
            if (result285 !== null) {
              var result283 = [result284, result285];
            } else {
              var result283 = null;
              this._pos = savedPos48;
            }
          } else {
            var result283 = null;
            this._pos = savedPos48;
          }
        }
        if (result282 !== null) {
          var result280 = [result281, result282];
        } else {
          var result280 = null;
          this._pos = savedPos47;
        }
      } else {
        var result280 = null;
        this._pos = savedPos47;
      }
      
      
      
      this._cache[cacheKey] = {
        nextPos: this._pos,
        result:  result280
      };
      return result280;
    },
    
    _parse_multiLineComment: function(context) {
      var cacheKey = "multiLineComment" + '@' + this._pos;
      var cachedResult = this._cache[cacheKey];
      if (cachedResult) {
        this._pos = cachedResult.nextPos;
        return cachedResult.result;
      }
      
      var pos = this._pos;
      
      
      var savedPos50 = this._pos;
      if (this._input.substr(this._pos, 2) === "/*") {
        var result288 = "/*";
        this._pos += 2;
      } else {
        var result288 = null;
        if (context.reportMatchFailures) {
          this._matchFailed(this._quoteString("/*"));
        }
      }
      if (result288 !== null) {
        var result289 = [];
        var savedPos51 = this._pos;
        var savedPos52 = this._pos;
        var savedReportMatchFailuresVar7 = context.reportMatchFailures;
        context.reportMatchFailures = false;
        if (this._input.substr(this._pos, 2) === "*/") {
          var result294 = "*/";
          this._pos += 2;
        } else {
          var result294 = null;
          if (context.reportMatchFailures) {
            this._matchFailed(this._quoteString("*/"));
          }
        }
        context.reportMatchFailures = savedReportMatchFailuresVar7;
        if (result294 === null) {
          var result292 = '';
        } else {
          var result292 = null;
          this._pos = savedPos52;
        }
        if (result292 !== null) {
          if (this._input.length > this._pos) {
            var result293 = this._input.charAt(this._pos);
            this._pos++;
          } else {
            var result293 = null;
            if (context.reportMatchFailures) {
              this._matchFailed('any character');
            }
          }
          if (result293 !== null) {
            var result291 = [result292, result293];
          } else {
            var result291 = null;
            this._pos = savedPos51;
          }
        } else {
          var result291 = null;
          this._pos = savedPos51;
        }
        while (result291 !== null) {
          result289.push(result291);
          var savedPos51 = this._pos;
          var savedPos52 = this._pos;
          var savedReportMatchFailuresVar7 = context.reportMatchFailures;
          context.reportMatchFailures = false;
          if (this._input.substr(this._pos, 2) === "*/") {
            var result294 = "*/";
            this._pos += 2;
          } else {
            var result294 = null;
            if (context.reportMatchFailures) {
              this._matchFailed(this._quoteString("*/"));
            }
          }
          context.reportMatchFailures = savedReportMatchFailuresVar7;
          if (result294 === null) {
            var result292 = '';
          } else {
            var result292 = null;
            this._pos = savedPos52;
          }
          if (result292 !== null) {
            if (this._input.length > this._pos) {
              var result293 = this._input.charAt(this._pos);
              this._pos++;
            } else {
              var result293 = null;
              if (context.reportMatchFailures) {
                this._matchFailed('any character');
              }
            }
            if (result293 !== null) {
              var result291 = [result292, result293];
            } else {
              var result291 = null;
              this._pos = savedPos51;
            }
          } else {
            var result291 = null;
            this._pos = savedPos51;
          }
        }
        if (result289 !== null) {
          if (this._input.substr(this._pos, 2) === "*/") {
            var result290 = "*/";
            this._pos += 2;
          } else {
            var result290 = null;
            if (context.reportMatchFailures) {
              this._matchFailed(this._quoteString("*/"));
            }
          }
          if (result290 !== null) {
            var result287 = [result288, result289, result290];
          } else {
            var result287 = null;
            this._pos = savedPos50;
          }
        } else {
          var result287 = null;
          this._pos = savedPos50;
        }
      } else {
        var result287 = null;
        this._pos = savedPos50;
      }
      
      
      
      this._cache[cacheKey] = {
        nextPos: this._pos,
        result:  result287
      };
      return result287;
    },
    
    _parse_eol: function(context) {
      var cacheKey = "eol" + '@' + this._pos;
      var cachedResult = this._cache[cacheKey];
      if (cachedResult) {
        this._pos = cachedResult.nextPos;
        return cachedResult.result;
      }
      
      var pos = this._pos;
      
      var savedReportMatchFailures = context.reportMatchFailures;
      context.reportMatchFailures = false;
      if (this._input.substr(this._pos, 1) === "\n") {
        var result300 = "\n";
        this._pos += 1;
      } else {
        var result300 = null;
        if (context.reportMatchFailures) {
          this._matchFailed(this._quoteString("\n"));
        }
      }
      if (result300 !== null) {
        var result295 = result300;
      } else {
        if (this._input.substr(this._pos, 2) === "\r\n") {
          var result299 = "\r\n";
          this._pos += 2;
        } else {
          var result299 = null;
          if (context.reportMatchFailures) {
            this._matchFailed(this._quoteString("\r\n"));
          }
        }
        if (result299 !== null) {
          var result295 = result299;
        } else {
          if (this._input.substr(this._pos, 1) === "\r") {
            var result298 = "\r";
            this._pos += 1;
          } else {
            var result298 = null;
            if (context.reportMatchFailures) {
              this._matchFailed(this._quoteString("\r"));
            }
          }
          if (result298 !== null) {
            var result295 = result298;
          } else {
            if (this._input.substr(this._pos, 1) === "\u2028") {
              var result297 = "\u2028";
              this._pos += 1;
            } else {
              var result297 = null;
              if (context.reportMatchFailures) {
                this._matchFailed(this._quoteString("\u2028"));
              }
            }
            if (result297 !== null) {
              var result295 = result297;
            } else {
              if (this._input.substr(this._pos, 1) === "\u2029") {
                var result296 = "\u2029";
                this._pos += 1;
              } else {
                var result296 = null;
                if (context.reportMatchFailures) {
                  this._matchFailed(this._quoteString("\u2029"));
                }
              }
              if (result296 !== null) {
                var result295 = result296;
              } else {
                var result295 = null;;
              };
            };
          };
        };
      }
      context.reportMatchFailures = savedReportMatchFailures;
      if (context.reportMatchFailures && result295 === null) {
        this._matchFailed("end of line");
      }
      
      this._cache[cacheKey] = {
        nextPos: this._pos,
        result:  result295
      };
      return result295;
    },
    
    _parse_eolChar: function(context) {
      var cacheKey = "eolChar" + '@' + this._pos;
      var cachedResult = this._cache[cacheKey];
      if (cachedResult) {
        this._pos = cachedResult.nextPos;
        return cachedResult.result;
      }
      
      var pos = this._pos;
      
      
      if (this._input.substr(this._pos).match(/^[\n\r\u2028\u2029]/) !== null) {
        var result301 = this._input.charAt(this._pos);
        this._pos++;
      } else {
        var result301 = null;
        if (context.reportMatchFailures) {
          this._matchFailed("[\\n\\r\\u2028\\u2029]");
        }
      }
      
      
      
      this._cache[cacheKey] = {
        nextPos: this._pos,
        result:  result301
      };
      return result301;
    },
    
    _parse_whitespace: function(context) {
      var cacheKey = "whitespace" + '@' + this._pos;
      var cachedResult = this._cache[cacheKey];
      if (cachedResult) {
        this._pos = cachedResult.nextPos;
        return cachedResult.result;
      }
      
      var pos = this._pos;
      
      var savedReportMatchFailures = context.reportMatchFailures;
      context.reportMatchFailures = false;
      if (this._input.substr(this._pos).match(/^[ 	  ᠎ -   　]/) !== null) {
        var result302 = this._input.charAt(this._pos);
        this._pos++;
      } else {
        var result302 = null;
        if (context.reportMatchFailures) {
          this._matchFailed("[ 	  ᠎ -   　]");
        }
      }
      context.reportMatchFailures = savedReportMatchFailures;
      if (context.reportMatchFailures && result302 === null) {
        this._matchFailed("whitespace");
      }
      
      this._cache[cacheKey] = {
        nextPos: this._pos,
        result:  result302
      };
      return result302;
    },
    
    /*
     * 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.grammarParser.SyntaxError| describing the error.
     */
    parse: function(input) {
      var that = this;
      
      function initialize() {
        that._input = input;
        that._pos = 0;
        that._rightmostMatchFailuresPos = 0;
        that._rightmostMatchFailuresExpected = [];
        that._cache = {};
      }
      
      function buildErrorMessage() {
        function buildExpected(failuresExpected) {
          switch (failuresExpected.length) {
            case 0:
              return 'end of input';
            case 1:
              return failuresExpected[0];
            default:
              failuresExpected.sort();
              return failuresExpected.slice(0, failuresExpected.length - 1).join(', ')
                + ' or '
                + failuresExpected[failuresExpected.length - 1];
          }
        }
        
        var expected = buildExpected(that._rightmostMatchFailuresExpected);
        var pos = Math.max(that._pos, that._rightmostMatchFailuresPos);
        var actual = pos < that._input.length
          ? that._quoteString(that._input.charAt(pos))
          : '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 input = that._input;
        var pos = that._rightmostMatchFailuresPos;
        var line = 1;
        var column = 1;
        var seenCR = false;
        
        for (var i = 0; i < pos; 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 };
      }
      
      initialize();
      
      var initialContext = {
        reportMatchFailures: true
      };
      
      var result = this['_parse_' + this._startRule](initialContext);
      
      /*
       * The parser is now in one of the following three states:
       *
       * 1. The parser successfully parsed the whole input.
       *
       *    - |result !== null|
       *    - |that._pos === input.length|
       *    - |that._rightmostMatchFailuresExpected.length| may or may not contain
       *      something
       *
       * 2. The parser successfully parsed only a part of the input.
       *
       *    - |result !== null|
       *    - |that._pos < input.length|
       *    - |that._rightmostMatchFailuresExpected.length| may or may not contain
       *      something
       *
       * 3. The parser did not successfully parse any part of the input.
       *
       *   - |result === null|
       *   - |that._pos === 0|
       *   - |that._rightmostMatchFailuresExpected.length| contains at least one failure
       *
       * All code following this comment (including called functions) must
       * handle these states.
       */
      if (result === null || this._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;
})();