game_zhineng_baoliang/node_modules/@acuminous/bitsyntax/lib/parser.js

module.exports = (function(){
  /*
   * Generated by PEG.js 0.7.0.
   *
   * http://pegjs.majda.cz/
   */
  
  function quote(s) {
    /*
     * ECMA-262, 5th ed., 7.8.4: All characters may appear literally in a
     * string literal except for the closing quote character, backslash,
     * carriage return, line separator, paragraph separator, and line feed.
     * Any character may appear in the form of an escape sequence.
     *
     * For portability, we also escape escape all control and non-ASCII
     * characters. Note that "\0" and "\v" escape sequences are not used
     * because JSHint does not like the first and IE the second.
     */
     return '"' + s
      .replace(/\\/g, '\\\\')  // backslash
      .replace(/"/g, '\\"')    // closing quote character
      .replace(/\x08/g, '\\b') // backspace
      .replace(/\t/g, '\\t')   // horizontal tab
      .replace(/\n/g, '\\n')   // line feed
      .replace(/\f/g, '\\f')   // form feed
      .replace(/\r/g, '\\r')   // carriage return
      .replace(/[\x00-\x07\x0B\x0E-\x1F\x80-\uFFFF]/g, escape)
      + '"';
  }
  
  var result = {
    /*
     * Parses the input with a generated parser. If the parsing is successfull,
     * returns a value explicitly or implicitly specified by the grammar from
     * which the parser was generated (see |PEG.buildParser|). If the parsing is
     * unsuccessful, throws |PEG.parser.SyntaxError| describing the error.
     */
    parse: function(input, startRule) {
      var parseFunctions = {
        "start": parse_start,
        "segmentTail": parse_segmentTail,
        "segment": parse_segment,
        "string": parse_string,
        "chars": parse_chars,
        "char": parse_char,
        "hexDigit": parse_hexDigit,
        "identifier": parse_identifier,
        "number": parse_number,
        "size": parse_size,
        "specifierList": parse_specifierList,
        "specifierTail": parse_specifierTail,
        "specifier": parse_specifier,
        "unit": parse_unit,
        "ws": parse_ws
      };
      
      if (startRule !== undefined) {
        if (parseFunctions[startRule] === undefined) {
          throw new Error("Invalid rule name: " + quote(startRule) + ".");
        }
      } else {
        startRule = "start";
      }
      
      var pos = 0;
      var reportFailures = 0;
      var rightmostFailuresPos = 0;
      var rightmostFailuresExpected = [];
      
      function padLeft(input, padding, length) {
        var result = input;
        
        var padLength = length - input.length;
        for (var i = 0; i < padLength; i++) {
          result = padding + result;
        }
        
        return result;
      }
      
      function escape(ch) {
        var charCode = ch.charCodeAt(0);
        var escapeChar;
        var length;
        
        if (charCode <= 0xFF) {
          escapeChar = 'x';
          length = 2;
        } else {
          escapeChar = 'u';
          length = 4;
        }
        
        return '\\' + escapeChar + padLeft(charCode.toString(16).toUpperCase(), '0', length);
      }
      
      function matchFailed(failure) {
        if (pos < rightmostFailuresPos) {
          return;
        }
        
        if (pos > rightmostFailuresPos) {
          rightmostFailuresPos = pos;
          rightmostFailuresExpected = [];
        }
        
        rightmostFailuresExpected.push(failure);
      }
      
      function parse_start() {
        var result0, result1, result2, result3;
        var pos0, pos1;
        
        pos0 = pos;
        pos1 = pos;
        result0 = parse_ws();
        if (result0 !== null) {
          result1 = parse_segment();
          if (result1 !== null) {
            result2 = [];
            result3 = parse_segmentTail();
            while (result3 !== null) {
              result2.push(result3);
              result3 = parse_segmentTail();
            }
            if (result2 !== null) {
              result0 = [result0, result1, result2];
            } else {
              result0 = null;
              pos = pos1;
            }
          } else {
            result0 = null;
            pos = pos1;
          }
        } else {
          result0 = null;
          pos = pos1;
        }
        if (result0 !== null) {
          result0 = (function(offset, head, tail) { tail.unshift(head); return tail; })(pos0, result0[1], result0[2]);
        }
        if (result0 === null) {
          pos = pos0;
        }
        return result0;
      }
      
      function parse_segmentTail() {
        var result0, result1, result2, result3;
        var pos0, pos1;
        
        pos0 = pos;
        pos1 = pos;
        result0 = parse_ws();
        if (result0 !== null) {
          if (input.charCodeAt(pos) === 44) {
            result1 = ",";
            pos++;
          } else {
            result1 = null;
            if (reportFailures === 0) {
              matchFailed("\",\"");
            }
          }
          if (result1 !== null) {
            result2 = parse_ws();
            if (result2 !== null) {
              result3 = parse_segment();
              if (result3 !== null) {
                result0 = [result0, result1, result2, result3];
              } else {
                result0 = null;
                pos = pos1;
              }
            } else {
              result0 = null;
              pos = pos1;
            }
          } else {
            result0 = null;
            pos = pos1;
          }
        } else {
          result0 = null;
          pos = pos1;
        }
        if (result0 !== null) {
          result0 = (function(offset, seg) { return seg; })(pos0, result0[3]);
        }
        if (result0 === null) {
          pos = pos0;
        }
        return result0;
      }
      
      function parse_segment() {
        var result0, result1, result2;
        var pos0, pos1;
        
        pos0 = pos;
        result0 = parse_string();
        if (result0 !== null) {
          result0 = (function(offset, str) { return {string: str}; })(pos0, result0);
        }
        if (result0 === null) {
          pos = pos0;
        }
        if (result0 === null) {
          pos0 = pos;
          pos1 = pos;
          result0 = parse_identifier();
          if (result0 !== null) {
            result1 = parse_size();
            result1 = result1 !== null ? result1 : "";
            if (result1 !== null) {
              result2 = parse_specifierList();
              result2 = result2 !== null ? result2 : "";
              if (result2 !== null) {
                result0 = [result0, result1, result2];
              } else {
                result0 = null;
                pos = pos1;
              }
            } else {
              result0 = null;
              pos = pos1;
            }
          } else {
            result0 = null;
            pos = pos1;
          }
          if (result0 !== null) {
            result0 = (function(offset, v, size, specs) { return {name: v, size: size, specifiers: specs}; })(pos0, result0[0], result0[1], result0[2]);
          }
          if (result0 === null) {
            pos = pos0;
          }
          if (result0 === null) {
            pos0 = pos;
            pos1 = pos;
            result0 = parse_number();
            if (result0 !== null) {
              result1 = parse_size();
              result1 = result1 !== null ? result1 : "";
              if (result1 !== null) {
                result2 = parse_specifierList();
                result2 = result2 !== null ? result2 : "";
                if (result2 !== null) {
                  result0 = [result0, result1, result2];
                } else {
                  result0 = null;
                  pos = pos1;
                }
              } else {
                result0 = null;
                pos = pos1;
              }
            } else {
              result0 = null;
              pos = pos1;
            }
            if (result0 !== null) {
              result0 = (function(offset, v, size, specs) { return {value: v, size: size, specifiers: specs}; })(pos0, result0[0], result0[1], result0[2]);
            }
            if (result0 === null) {
              pos = pos0;
            }
          }
        }
        return result0;
      }
      
      function parse_string() {
        var result0, result1, result2;
        var pos0, pos1;
        
        pos0 = pos;
        pos1 = pos;
        if (input.charCodeAt(pos) === 34) {
          result0 = "\"";
          pos++;
        } else {
          result0 = null;
          if (reportFailures === 0) {
            matchFailed("\"\\\"\"");
          }
        }
        if (result0 !== null) {
          if (input.charCodeAt(pos) === 34) {
            result1 = "\"";
            pos++;
          } else {
            result1 = null;
            if (reportFailures === 0) {
              matchFailed("\"\\\"\"");
            }
          }
          if (result1 !== null) {
            result0 = [result0, result1];
          } else {
            result0 = null;
            pos = pos1;
          }
        } else {
          result0 = null;
          pos = pos1;
        }
        if (result0 !== null) {
          result0 = (function(offset) { return "";    })(pos0);
        }
        if (result0 === null) {
          pos = pos0;
        }
        if (result0 === null) {
          pos0 = pos;
          pos1 = pos;
          if (input.charCodeAt(pos) === 34) {
            result0 = "\"";
            pos++;
          } else {
            result0 = null;
            if (reportFailures === 0) {
              matchFailed("\"\\\"\"");
            }
          }
          if (result0 !== null) {
            result1 = parse_chars();
            if (result1 !== null) {
              if (input.charCodeAt(pos) === 34) {
                result2 = "\"";
                pos++;
              } else {
                result2 = null;
                if (reportFailures === 0) {
                  matchFailed("\"\\\"\"");
                }
              }
              if (result2 !== null) {
                result0 = [result0, result1, result2];
              } else {
                result0 = null;
                pos = pos1;
              }
            } else {
              result0 = null;
              pos = pos1;
            }
          } else {
            result0 = null;
            pos = pos1;
          }
          if (result0 !== null) {
            result0 = (function(offset, chars) { return chars; })(pos0, result0[1]);
          }
          if (result0 === null) {
            pos = pos0;
          }
        }
        return result0;
      }
      
      function parse_chars() {
        var result0, result1;
        var pos0;
        
        pos0 = pos;
        result1 = parse_char();
        if (result1 !== null) {
          result0 = [];
          while (result1 !== null) {
            result0.push(result1);
            result1 = parse_char();
          }
        } else {
          result0 = null;
        }
        if (result0 !== null) {
          result0 = (function(offset, chars) { return chars.join(""); })(pos0, result0);
        }
        if (result0 === null) {
          pos = pos0;
        }
        return result0;
      }
      
      function parse_char() {
        var result0, result1, result2, result3, result4;
        var pos0, pos1;
        
        if (/^[^"\\\0-\x1F]/.test(input.charAt(pos))) {
          result0 = input.charAt(pos);
          pos++;
        } else {
          result0 = null;
          if (reportFailures === 0) {
            matchFailed("[^\"\\\\\\0-\\x1F]");
          }
        }
        if (result0 === null) {
          pos0 = pos;
          if (input.substr(pos, 2) === "\\\"") {
            result0 = "\\\"";
            pos += 2;
          } else {
            result0 = null;
            if (reportFailures === 0) {
              matchFailed("\"\\\\\\\"\"");
            }
          }
          if (result0 !== null) {
            result0 = (function(offset) { return '"';  })(pos0);
          }
          if (result0 === null) {
            pos = pos0;
          }
          if (result0 === null) {
            pos0 = pos;
            if (input.substr(pos, 2) === "\\\\") {
              result0 = "\\\\";
              pos += 2;
            } else {
              result0 = null;
              if (reportFailures === 0) {
                matchFailed("\"\\\\\\\\\"");
              }
            }
            if (result0 !== null) {
              result0 = (function(offset) { return "\\"; })(pos0);
            }
            if (result0 === null) {
              pos = pos0;
            }
            if (result0 === null) {
              pos0 = pos;
              if (input.substr(pos, 2) === "\\/") {
                result0 = "\\/";
                pos += 2;
              } else {
                result0 = null;
                if (reportFailures === 0) {
                  matchFailed("\"\\\\/\"");
                }
              }
              if (result0 !== null) {
                result0 = (function(offset) { return "/";  })(pos0);
              }
              if (result0 === null) {
                pos = pos0;
              }
              if (result0 === null) {
                pos0 = pos;
                if (input.substr(pos, 2) === "\\b") {
                  result0 = "\\b";
                  pos += 2;
                } else {
                  result0 = null;
                  if (reportFailures === 0) {
                    matchFailed("\"\\\\b\"");
                  }
                }
                if (result0 !== null) {
                  result0 = (function(offset) { return "\b"; })(pos0);
                }
                if (result0 === null) {
                  pos = pos0;
                }
                if (result0 === null) {
                  pos0 = pos;
                  if (input.substr(pos, 2) === "\\f") {
                    result0 = "\\f";
                    pos += 2;
                  } else {
                    result0 = null;
                    if (reportFailures === 0) {
                      matchFailed("\"\\\\f\"");
                    }
                  }
                  if (result0 !== null) {
                    result0 = (function(offset) { return "\f"; })(pos0);
                  }
                  if (result0 === null) {
                    pos = pos0;
                  }
                  if (result0 === null) {
                    pos0 = pos;
                    if (input.substr(pos, 2) === "\\n") {
                      result0 = "\\n";
                      pos += 2;
                    } else {
                      result0 = null;
                      if (reportFailures === 0) {
                        matchFailed("\"\\\\n\"");
                      }
                    }
                    if (result0 !== null) {
                      result0 = (function(offset) { return "\n"; })(pos0);
                    }
                    if (result0 === null) {
                      pos = pos0;
                    }
                    if (result0 === null) {
                      pos0 = pos;
                      if (input.substr(pos, 2) === "\\r") {
                        result0 = "\\r";
                        pos += 2;
                      } else {
                        result0 = null;
                        if (reportFailures === 0) {
                          matchFailed("\"\\\\r\"");
                        }
                      }
                      if (result0 !== null) {
                        result0 = (function(offset) { return "\r"; })(pos0);
                      }
                      if (result0 === null) {
                        pos = pos0;
                      }
                      if (result0 === null) {
                        pos0 = pos;
                        if (input.substr(pos, 2) === "\\t") {
                          result0 = "\\t";
                          pos += 2;
                        } else {
                          result0 = null;
                          if (reportFailures === 0) {
                            matchFailed("\"\\\\t\"");
                          }
                        }
                        if (result0 !== null) {
                          result0 = (function(offset) { return "\t"; })(pos0);
                        }
                        if (result0 === null) {
                          pos = pos0;
                        }
                        if (result0 === null) {
                          pos0 = pos;
                          pos1 = pos;
                          if (input.substr(pos, 2) === "\\u") {
                            result0 = "\\u";
                            pos += 2;
                          } else {
                            result0 = null;
                            if (reportFailures === 0) {
                              matchFailed("\"\\\\u\"");
                            }
                          }
                          if (result0 !== null) {
                            result1 = parse_hexDigit();
                            if (result1 !== null) {
                              result2 = parse_hexDigit();
                              if (result2 !== null) {
                                result3 = parse_hexDigit();
                                if (result3 !== null) {
                                  result4 = parse_hexDigit();
                                  if (result4 !== null) {
                                    result0 = [result0, result1, result2, result3, result4];
                                  } else {
                                    result0 = null;
                                    pos = pos1;
                                  }
                                } else {
                                  result0 = null;
                                  pos = pos1;
                                }
                              } else {
                                result0 = null;
                                pos = pos1;
                              }
                            } else {
                              result0 = null;
                              pos = pos1;
                            }
                          } else {
                            result0 = null;
                            pos = pos1;
                          }
                          if (result0 !== null) {
                            result0 = (function(offset, h1, h2, h3, h4) {
                                return String.fromCharCode(parseInt("0x" + h1 + h2 + h3 + h4));
                              })(pos0, result0[1], result0[2], result0[3], result0[4]);
                          }
                          if (result0 === null) {
                            pos = pos0;
                          }
                        }
                      }
                    }
                  }
                }
              }
            }
          }
        }
        return result0;
      }
      
      function parse_hexDigit() {
        var result0;
        
        if (/^[0-9a-fA-F]/.test(input.charAt(pos))) {
          result0 = input.charAt(pos);
          pos++;
        } else {
          result0 = null;
          if (reportFailures === 0) {
            matchFailed("[0-9a-fA-F]");
          }
        }
        return result0;
      }
      
      function parse_identifier() {
        var result0, result1, result2;
        var pos0, pos1;
        
        pos0 = pos;
        pos1 = pos;
        if (/^[_a-zA-Z]/.test(input.charAt(pos))) {
          result0 = input.charAt(pos);
          pos++;
        } else {
          result0 = null;
          if (reportFailures === 0) {
            matchFailed("[_a-zA-Z]");
          }
        }
        if (result0 !== null) {
          result1 = [];
          if (/^[_a-zA-Z0-9]/.test(input.charAt(pos))) {
            result2 = input.charAt(pos);
            pos++;
          } else {
            result2 = null;
            if (reportFailures === 0) {
              matchFailed("[_a-zA-Z0-9]");
            }
          }
          while (result2 !== null) {
            result1.push(result2);
            if (/^[_a-zA-Z0-9]/.test(input.charAt(pos))) {
              result2 = input.charAt(pos);
              pos++;
            } else {
              result2 = null;
              if (reportFailures === 0) {
                matchFailed("[_a-zA-Z0-9]");
              }
            }
          }
          if (result1 !== null) {
            result0 = [result0, result1];
          } else {
            result0 = null;
            pos = pos1;
          }
        } else {
          result0 = null;
          pos = pos1;
        }
        if (result0 !== null) {
          result0 = (function(offset, head, tail) { return head + tail.join(''); })(pos0, result0[0], result0[1]);
        }
        if (result0 === null) {
          pos = pos0;
        }
        return result0;
      }
      
      function parse_number() {
        var result0, result1, result2;
        var pos0, pos1;
        
        pos0 = pos;
        if (input.charCodeAt(pos) === 48) {
          result0 = "0";
          pos++;
        } else {
          result0 = null;
          if (reportFailures === 0) {
            matchFailed("\"0\"");
          }
        }
        if (result0 !== null) {
          result0 = (function(offset) { return 0; })(pos0);
        }
        if (result0 === null) {
          pos = pos0;
        }
        if (result0 === null) {
          pos0 = pos;
          pos1 = pos;
          if (/^[1-9]/.test(input.charAt(pos))) {
            result0 = input.charAt(pos);
            pos++;
          } else {
            result0 = null;
            if (reportFailures === 0) {
              matchFailed("[1-9]");
            }
          }
          if (result0 !== null) {
            result1 = [];
            if (/^[0-9]/.test(input.charAt(pos))) {
              result2 = input.charAt(pos);
              pos++;
            } else {
              result2 = null;
              if (reportFailures === 0) {
                matchFailed("[0-9]");
              }
            }
            while (result2 !== null) {
              result1.push(result2);
              if (/^[0-9]/.test(input.charAt(pos))) {
                result2 = input.charAt(pos);
                pos++;
              } else {
                result2 = null;
                if (reportFailures === 0) {
                  matchFailed("[0-9]");
                }
              }
            }
            if (result1 !== null) {
              result0 = [result0, result1];
            } else {
              result0 = null;
              pos = pos1;
            }
          } else {
            result0 = null;
            pos = pos1;
          }
          if (result0 !== null) {
            result0 = (function(offset, head, tail) { return parseInt(head + tail.join('')); })(pos0, result0[0], result0[1]);
          }
          if (result0 === null) {
            pos = pos0;
          }
        }
        return result0;
      }
      
      function parse_size() {
        var result0, result1;
        var pos0, pos1;
        
        pos0 = pos;
        pos1 = pos;
        if (input.charCodeAt(pos) === 58) {
          result0 = ":";
          pos++;
        } else {
          result0 = null;
          if (reportFailures === 0) {
            matchFailed("\":\"");
          }
        }
        if (result0 !== null) {
          result1 = parse_number();
          if (result1 !== null) {
            result0 = [result0, result1];
          } else {
            result0 = null;
            pos = pos1;
          }
        } else {
          result0 = null;
          pos = pos1;
        }
        if (result0 !== null) {
          result0 = (function(offset, num) { return num; })(pos0, result0[1]);
        }
        if (result0 === null) {
          pos = pos0;
        }
        if (result0 === null) {
          pos0 = pos;
          pos1 = pos;
          if (input.charCodeAt(pos) === 58) {
            result0 = ":";
            pos++;
          } else {
            result0 = null;
            if (reportFailures === 0) {
              matchFailed("\":\"");
            }
          }
          if (result0 !== null) {
            result1 = parse_identifier();
            if (result1 !== null) {
              result0 = [result0, result1];
            } else {
              result0 = null;
              pos = pos1;
            }
          } else {
            result0 = null;
            pos = pos1;
          }
          if (result0 !== null) {
            result0 = (function(offset, id) { return id; })(pos0, result0[1]);
          }
          if (result0 === null) {
            pos = pos0;
          }
        }
        return result0;
      }
      
      function parse_specifierList() {
        var result0, result1, result2, result3;
        var pos0, pos1;
        
        pos0 = pos;
        pos1 = pos;
        if (input.charCodeAt(pos) === 47) {
          result0 = "/";
          pos++;
        } else {
          result0 = null;
          if (reportFailures === 0) {
            matchFailed("\"/\"");
          }
        }
        if (result0 !== null) {
          result1 = parse_specifier();
          if (result1 !== null) {
            result2 = [];
            result3 = parse_specifierTail();
            while (result3 !== null) {
              result2.push(result3);
              result3 = parse_specifierTail();
            }
            if (result2 !== null) {
              result0 = [result0, result1, result2];
            } else {
              result0 = null;
              pos = pos1;
            }
          } else {
            result0 = null;
            pos = pos1;
          }
        } else {
          result0 = null;
          pos = pos1;
        }
        if (result0 !== null) {
          result0 = (function(offset, head, tail) { tail.unshift(head); return tail; })(pos0, result0[1], result0[2]);
        }
        if (result0 === null) {
          pos = pos0;
        }
        return result0;
      }
      
      function parse_specifierTail() {
        var result0, result1;
        var pos0, pos1;
        
        pos0 = pos;
        pos1 = pos;
        if (input.charCodeAt(pos) === 45) {
          result0 = "-";
          pos++;
        } else {
          result0 = null;
          if (reportFailures === 0) {
            matchFailed("\"-\"");
          }
        }
        if (result0 !== null) {
          result1 = parse_specifier();
          if (result1 !== null) {
            result0 = [result0, result1];
          } else {
            result0 = null;
            pos = pos1;
          }
        } else {
          result0 = null;
          pos = pos1;
        }
        if (result0 !== null) {
          result0 = (function(offset, spec) { return spec; })(pos0, result0[1]);
        }
        if (result0 === null) {
          pos = pos0;
        }
        return result0;
      }
      
      function parse_specifier() {
        var result0;
        
        if (input.substr(pos, 6) === "little") {
          result0 = "little";
          pos += 6;
        } else {
          result0 = null;
          if (reportFailures === 0) {
            matchFailed("\"little\"");
          }
        }
        if (result0 === null) {
          if (input.substr(pos, 3) === "big") {
            result0 = "big";
            pos += 3;
          } else {
            result0 = null;
            if (reportFailures === 0) {
              matchFailed("\"big\"");
            }
          }
          if (result0 === null) {
            if (input.substr(pos, 6) === "signed") {
              result0 = "signed";
              pos += 6;
            } else {
              result0 = null;
              if (reportFailures === 0) {
                matchFailed("\"signed\"");
              }
            }
            if (result0 === null) {
              if (input.substr(pos, 8) === "unsigned") {
                result0 = "unsigned";
                pos += 8;
              } else {
                result0 = null;
                if (reportFailures === 0) {
                  matchFailed("\"unsigned\"");
                }
              }
              if (result0 === null) {
                if (input.substr(pos, 7) === "integer") {
                  result0 = "integer";
                  pos += 7;
                } else {
                  result0 = null;
                  if (reportFailures === 0) {
                    matchFailed("\"integer\"");
                  }
                }
                if (result0 === null) {
                  if (input.substr(pos, 6) === "binary") {
                    result0 = "binary";
                    pos += 6;
                  } else {
                    result0 = null;
                    if (reportFailures === 0) {
                      matchFailed("\"binary\"");
                    }
                  }
                  if (result0 === null) {
                    if (input.substr(pos, 5) === "float") {
                      result0 = "float";
                      pos += 5;
                    } else {
                      result0 = null;
                      if (reportFailures === 0) {
                        matchFailed("\"float\"");
                      }
                    }
                    if (result0 === null) {
                      result0 = parse_unit();
                    }
                  }
                }
              }
            }
          }
        }
        return result0;
      }
      
      function parse_unit() {
        var result0, result1;
        var pos0, pos1;
        
        pos0 = pos;
        pos1 = pos;
        if (input.substr(pos, 5) === "unit:") {
          result0 = "unit:";
          pos += 5;
        } else {
          result0 = null;
          if (reportFailures === 0) {
            matchFailed("\"unit:\"");
          }
        }
        if (result0 !== null) {
          result1 = parse_number();
          if (result1 !== null) {
            result0 = [result0, result1];
          } else {
            result0 = null;
            pos = pos1;
          }
        } else {
          result0 = null;
          pos = pos1;
        }
        if (result0 !== null) {
          result0 = (function(offset, num) { return 'unit:' + num; })(pos0, result0[1]);
        }
        if (result0 === null) {
          pos = pos0;
        }
        return result0;
      }
      
      function parse_ws() {
        var result0, result1;
        
        result0 = [];
        if (/^[ \t\n]/.test(input.charAt(pos))) {
          result1 = input.charAt(pos);
          pos++;
        } else {
          result1 = null;
          if (reportFailures === 0) {
            matchFailed("[ \\t\\n]");
          }
        }
        while (result1 !== null) {
          result0.push(result1);
          if (/^[ \t\n]/.test(input.charAt(pos))) {
            result1 = input.charAt(pos);
            pos++;
          } else {
            result1 = null;
            if (reportFailures === 0) {
              matchFailed("[ \\t\\n]");
            }
          }
        }
        return result0;
      }
      
      
      function cleanupExpected(expected) {
        expected.sort();
        
        var lastExpected = null;
        var cleanExpected = [];
        for (var i = 0; i < expected.length; i++) {
          if (expected[i] !== lastExpected) {
            cleanExpected.push(expected[i]);
            lastExpected = expected[i];
          }
        }
        return cleanExpected;
      }
      
      function computeErrorPosition() {
        /*
         * The first idea was to use |String.split| to break the input up to the
         * error position along newlines and derive the line and column from
         * there. However IE's |split| implementation is so broken that it was
         * enough to prevent it.
         */
        
        var line = 1;
        var column = 1;
        var seenCR = false;
        
        for (var i = 0; i < Math.max(pos, rightmostFailuresPos); i++) {
          var ch = input.charAt(i);
          if (ch === "\n") {
            if (!seenCR) { line++; }
            column = 1;
            seenCR = false;
          } else if (ch === "\r" || ch === "\u2028" || ch === "\u2029") {
            line++;
            column = 1;
            seenCR = true;
          } else {
            column++;
            seenCR = false;
          }
        }
        
        return { line: line, column: column };
      }
      
      
      var result = parseFunctions[startRule]();
      
      /*
       * The parser is now in one of the following three states:
       *
       * 1. The parser successfully parsed the whole input.
       *
       *    - |result !== null|
       *    - |pos === input.length|
       *    - |rightmostFailuresExpected| may or may not contain something
       *
       * 2. The parser successfully parsed only a part of the input.
       *
       *    - |result !== null|
       *    - |pos < input.length|
       *    - |rightmostFailuresExpected| may or may not contain something
       *
       * 3. The parser did not successfully parse any part of the input.
       *
       *   - |result === null|
       *   - |pos === 0|
       *   - |rightmostFailuresExpected| contains at least one failure
       *
       * All code following this comment (including called functions) must
       * handle these states.
       */
      if (result === null || pos !== input.length) {
        var offset = Math.max(pos, rightmostFailuresPos);
        var found = offset < input.length ? input.charAt(offset) : null;
        var errorPosition = computeErrorPosition();
        
        throw new this.SyntaxError(
          cleanupExpected(rightmostFailuresExpected),
          found,
          offset,
          errorPosition.line,
          errorPosition.column
        );
      }
      
      return result;
    },
    
    /* Returns the parser source code. */
    toSource: function() { return this._source; }
  };
  
  /* Thrown when a parser encounters a syntax error. */
  
  result.SyntaxError = function(expected, found, offset, line, column) {
    function buildMessage(expected, found) {
      var expectedHumanized, foundHumanized;
      
      switch (expected.length) {
        case 0:
          expectedHumanized = "end of input";
          break;
        case 1:
          expectedHumanized = expected[0];
          break;
        default:
          expectedHumanized = expected.slice(0, expected.length - 1).join(", ")
            + " or "
            + expected[expected.length - 1];
      }
      
      foundHumanized = found ? quote(found) : "end of input";
      
      return "Expected " + expectedHumanized + " but " + foundHumanized + " found.";
    }
    
    this.name = "SyntaxError";
    this.expected = expected;
    this.found = found;
    this.message = buildMessage(expected, found);
    this.offset = offset;
    this.line = line;
    this.column = column;
  };
  
  result.SyntaxError.prototype = Error.prototype;
  
  return result;
})();