module.exports = (function() {
  /*
   * Generated by PEG.js 0.8.0.
   *
   * http://pegjs.majda.cz/
   */

  function peg$subclass(child, parent) {
    function ctor() { this.constructor = child; }
    ctor.prototype = parent.prototype;
    child.prototype = new ctor();
  }

  function SyntaxError(message, expected, found, offset, line, column) {
    this.message  = message;
    this.expected = expected;
    this.found    = found;
    this.offset   = offset;
    this.line     = line;
    this.column   = column;

    this.name     = "SyntaxError";
  }

  peg$subclass(SyntaxError, Error);

  function parse(input) {
    var options = arguments.length > 1 ? arguments[1] : {},

        peg$FAILED = {},

        peg$startRuleFunctions = { Grammar: peg$parseGrammar },
        peg$startRuleFunction  = peg$parseGrammar,

        peg$c0 = peg$FAILED,
        peg$c1 = null,
        peg$c2 = [],
        peg$c3 = function(initializer, rules) {
              return {
                type:        "grammar",
                initializer: extractOptional(initializer, 0),
                rules:       extractList(rules, 0)
              };
            },
        peg$c4 = ";",
        peg$c5 = { type: "literal", value: ";", description: "\";\"" },
        peg$c6 = function(code) {
              return {
                type: "initializer",
                code: code
              };
            },
        peg$c7 = "=",
        peg$c8 = { type: "literal", value: "=", description: "\"=\"" },
        peg$c9 = function(name, displayName, expression) {
              return {
                type:        "rule",
                name:        name,
                expression:  displayName !== null
                  ? {
                      type:       "named",
                      name:       displayName[0],
                      expression: expression
                    }
                  : expression
              };
            },
        peg$c10 = "/",
        peg$c11 = { type: "literal", value: "/", description: "\"/\"" },
        peg$c12 = function(first, rest) {
              return rest.length > 0
                ? { type: "choice", alternatives: buildList(first, rest, 3) }
                : first;
            },
        peg$c13 = function(first, rest, code) {
              var expression = rest.length > 0
                ? { type: "sequence", elements: buildList(first, rest, 1) }
                : first;
              return {
                type:       "action",
                expression: expression,
                code:       code
              };
            },
        peg$c14 = function(first, rest) {
              return rest.length > 0
                ? { type: "sequence", elements: buildList(first, rest, 1) }
                : first;
            },
        peg$c15 = ":",
        peg$c16 = { type: "literal", value: ":", description: "\":\"" },
        peg$c17 = function(label, expression) {
              return {
                type:       "labeled",
                label:      label,
                expression: expression
              };
            },
        peg$c18 = "$",
        peg$c19 = { type: "literal", value: "$", description: "\"$\"" },
        peg$c20 = function(expression) {
              return {
                type:       "text",
                expression: expression
              };
            },
        peg$c21 = "&",
        peg$c22 = { type: "literal", value: "&", description: "\"&\"" },
        peg$c23 = function(code) {
              return {
                type: "semantic_and",
                code: code
              };
            },
        peg$c24 = function(expression) {
              return {
                type:       "simple_and",
                expression: expression
              };
            },
        peg$c25 = "!",
        peg$c26 = { type: "literal", value: "!", description: "\"!\"" },
        peg$c27 = function(code) {
              return {
                type: "semantic_not",
                code: code
              };
            },
        peg$c28 = function(expression) {
              return {
                type:       "simple_not",
                expression: expression
              };
            },
        peg$c29 = "?",
        peg$c30 = { type: "literal", value: "?", description: "\"?\"" },
        peg$c31 = function(expression) {
              return {
                type:       "optional",
                expression: expression
              };
            },
        peg$c32 = "*",
        peg$c33 = { type: "literal", value: "*", description: "\"*\"" },
        peg$c34 = function(expression) {
              return {
                type:       "zero_or_more",
                expression: expression
              };
            },
        peg$c35 = "+",
        peg$c36 = { type: "literal", value: "+", description: "\"+\"" },
        peg$c37 = function(expression) {
              return {
                type:       "one_or_more",
                expression: expression
              };
            },
        peg$c38 = void 0,
        peg$c39 = function(name) {
              return {
                type: "rule_ref",
                name: name
              };
            },
        peg$c40 = ".",
        peg$c41 = { type: "literal", value: ".", description: "\".\"" },
        peg$c42 = function() { return { type: "any" }; },
        peg$c43 = "(",
        peg$c44 = { type: "literal", value: "(", description: "\"(\"" },
        peg$c45 = ")",
        peg$c46 = { type: "literal", value: ")", description: "\")\"" },
        peg$c47 = function(expression) { return expression; },
        peg$c48 = { type: "any", description: "any character" },
        peg$c49 = { type: "other", description: "whitespace" },
        peg$c50 = "\t",
        peg$c51 = { type: "literal", value: "\t", description: "\"\\t\"" },
        peg$c52 = "\x0B",
        peg$c53 = { type: "literal", value: "\x0B", description: "\"\\x0B\"" },
        peg$c54 = "\f",
        peg$c55 = { type: "literal", value: "\f", description: "\"\\f\"" },
        peg$c56 = " ",
        peg$c57 = { type: "literal", value: " ", description: "\" \"" },
        peg$c58 = "\xA0",
        peg$c59 = { type: "literal", value: "\xA0", description: "\"\\xA0\"" },
        peg$c60 = "\uFEFF",
        peg$c61 = { type: "literal", value: "\uFEFF", description: "\"\\uFEFF\"" },
        peg$c62 = /^[\n\r\u2028\u2029]/,
        peg$c63 = { type: "class", value: "[\\n\\r\\u2028\\u2029]", description: "[\\n\\r\\u2028\\u2029]" },
        peg$c64 = { type: "other", description: "end of line" },
        peg$c65 = "\n",
        peg$c66 = { type: "literal", value: "\n", description: "\"\\n\"" },
        peg$c67 = "\r\n",
        peg$c68 = { type: "literal", value: "\r\n", description: "\"\\r\\n\"" },
        peg$c69 = "\r",
        peg$c70 = { type: "literal", value: "\r", description: "\"\\r\"" },
        peg$c71 = "\u2028",
        peg$c72 = { type: "literal", value: "\u2028", description: "\"\\u2028\"" },
        peg$c73 = "\u2029",
        peg$c74 = { type: "literal", value: "\u2029", description: "\"\\u2029\"" },
        peg$c75 = { type: "other", description: "comment" },
        peg$c76 = "/*",
        peg$c77 = { type: "literal", value: "/*", description: "\"/*\"" },
        peg$c78 = "*/",
        peg$c79 = { type: "literal", value: "*/", description: "\"*/\"" },
        peg$c80 = "//",
        peg$c81 = { type: "literal", value: "//", description: "\"//\"" },
        peg$c82 = { type: "other", description: "action" },
        peg$c83 = function(braced) { return braced.substr(1, braced.length - 2); },
        peg$c84 = "{",
        peg$c85 = { type: "literal", value: "{", description: "\"{\"" },
        peg$c86 = "}",
        peg$c87 = { type: "literal", value: "}", description: "\"}\"" },
        peg$c88 = /^[^{}]/,
        peg$c89 = { type: "class", value: "[^{}]", description: "[^{}]" },
        peg$c90 = { type: "other", description: "identifier" },
        peg$c91 = "_",
        peg$c92 = { type: "literal", value: "_", description: "\"_\"" },
        peg$c93 = /^[a-z]/,
        peg$c94 = { type: "class", value: "[a-z]", description: "[a-z]" },
        peg$c95 = /^[A-Z]/,
        peg$c96 = { type: "class", value: "[A-Z]", description: "[A-Z]" },
        peg$c97 = { type: "other", description: "literal" },
        peg$c98 = "i",
        peg$c99 = { type: "literal", value: "i", description: "\"i\"" },
        peg$c100 = function(value, ignoreCase) {
              return { type: "literal", value: value, ignoreCase: ignoreCase !== null };
            },
        peg$c101 = { type: "other", description: "string" },
        peg$c102 = "\"",
        peg$c103 = { type: "literal", value: "\"", description: "\"\\\"\"" },
        peg$c104 = function(chars) { return chars.join(""); },
        peg$c105 = "'",
        peg$c106 = { type: "literal", value: "'", description: "\"'\"" },
        peg$c107 = "\\",
        peg$c108 = { type: "literal", value: "\\", description: "\"\\\\\"" },
        peg$c109 = function() { return text(); },
        peg$c110 = function(sequence) { return sequence; },
        peg$c111 = { type: "other", description: "character class" },
        peg$c112 = "[",
        peg$c113 = { type: "literal", value: "[", description: "\"[\"" },
        peg$c114 = "^",
        peg$c115 = { type: "literal", value: "^", description: "\"^\"" },
        peg$c116 = "]",
        peg$c117 = { type: "literal", value: "]", description: "\"]\"" },
        peg$c118 = function(inverted, parts, ignoreCase) {
              return {
                type:       "class",
                parts:      parts,
                inverted:   inverted !== null,
                ignoreCase: ignoreCase !== null,
                rawText:    text()
              };
            },
        peg$c119 = "-",
        peg$c120 = { type: "literal", value: "-", description: "\"-\"" },
        peg$c121 = function(begin, end) {
              if (begin.charCodeAt(0) > end.charCodeAt(0)) {
                error(
                  "Invalid character range: " + text() + "."
                );
              }

              return [begin, end];
            },
        peg$c122 = function() { return ""; },
        peg$c123 = "0",
        peg$c124 = { type: "literal", value: "0", description: "\"0\"" },
        peg$c125 = function() { return "\0"; },
        peg$c126 = "b",
        peg$c127 = { type: "literal", value: "b", description: "\"b\"" },
        peg$c128 = function() { return "\b";   },
        peg$c129 = "f",
        peg$c130 = { type: "literal", value: "f", description: "\"f\"" },
        peg$c131 = function() { return "\f";   },
        peg$c132 = "n",
        peg$c133 = { type: "literal", value: "n", description: "\"n\"" },
        peg$c134 = function() { return "\n";   },
        peg$c135 = "r",
        peg$c136 = { type: "literal", value: "r", description: "\"r\"" },
        peg$c137 = function() { return "\r";   },
        peg$c138 = "t",
        peg$c139 = { type: "literal", value: "t", description: "\"t\"" },
        peg$c140 = function() { return "\t";   },
        peg$c141 = "v",
        peg$c142 = { type: "literal", value: "v", description: "\"v\"" },
        peg$c143 = function() { return "\x0B"; },
        peg$c144 = "x",
        peg$c145 = { type: "literal", value: "x", description: "\"x\"" },
        peg$c146 = "u",
        peg$c147 = { type: "literal", value: "u", description: "\"u\"" },
        peg$c148 = function(digits) {
              return String.fromCharCode(parseInt(digits, 16));
            },
        peg$c149 = /^[0-9]/,
        peg$c150 = { type: "class", value: "[0-9]", description: "[0-9]" },
        peg$c151 = /^[0-9a-f]/i,
        peg$c152 = { type: "class", value: "[0-9a-f]i", description: "[0-9a-f]i" },
        peg$c153 = /^[ \xA0\u1680\u2000-\u200A\u202F\u205F\u3000]/,
        peg$c154 = { type: "class", value: "[\\u0020\\u00A0\\u1680\\u2000-\\u200A\\u202F\\u205F\\u3000]", description: "[\\u0020\\u00A0\\u1680\\u2000-\\u200A\\u202F\\u205F\\u3000]" },

        peg$currPos          = 0,
        peg$reportedPos      = 0,
        peg$cachedPos        = 0,
        peg$cachedPosDetails = { line: 1, column: 1, seenCR: false },
        peg$maxFailPos       = 0,
        peg$maxFailExpected  = [],
        peg$silentFails      = 0,

        peg$result;

    if ("startRule" in options) {
      if (!(options.startRule in peg$startRuleFunctions)) {
        throw new Error("Can't start parsing from rule \"" + options.startRule + "\".");
      }

      peg$startRuleFunction = peg$startRuleFunctions[options.startRule];
    }

    function text() {
      return input.substring(peg$reportedPos, peg$currPos);
    }

    function offset() {
      return peg$reportedPos;
    }

    function line() {
      return peg$computePosDetails(peg$reportedPos).line;
    }

    function column() {
      return peg$computePosDetails(peg$reportedPos).column;
    }

    function expected(description) {
      throw peg$buildException(
        null,
        [{ type: "other", description: description }],
        peg$reportedPos
      );
    }

    function error(message) {
      throw peg$buildException(message, null, peg$reportedPos);
    }

    function peg$computePosDetails(pos) {
      function advance(details, startPos, endPos) {
        var p, ch;

        for (p = startPos; p < endPos; p++) {
          ch = input.charAt(p);
          if (ch === "\n") {
            if (!details.seenCR) { details.line++; }
            details.column = 1;
            details.seenCR = false;
          } else if (ch === "\r" || ch === "\u2028" || ch === "\u2029") {
            details.line++;
            details.column = 1;
            details.seenCR = true;
          } else {
            details.column++;
            details.seenCR = false;
          }
        }
      }

      if (peg$cachedPos !== pos) {
        if (peg$cachedPos > pos) {
          peg$cachedPos = 0;
          peg$cachedPosDetails = { line: 1, column: 1, seenCR: false };
        }
        advance(peg$cachedPosDetails, peg$cachedPos, pos);
        peg$cachedPos = pos;
      }

      return peg$cachedPosDetails;
    }

    function peg$fail(expected) {
      if (peg$currPos < peg$maxFailPos) { return; }

      if (peg$currPos > peg$maxFailPos) {
        peg$maxFailPos = peg$currPos;
        peg$maxFailExpected = [];
      }

      peg$maxFailExpected.push(expected);
    }

    function peg$buildException(message, expected, pos) {
      function cleanupExpected(expected) {
        var i = 1;

        expected.sort(function(a, b) {
          if (a.description < b.description) {
            return -1;
          } else if (a.description > b.description) {
            return 1;
          } else {
            return 0;
          }
        });

        while (i < expected.length) {
          if (expected[i - 1] === expected[i]) {
            expected.splice(i, 1);
          } else {
            i++;
          }
        }
      }

      function buildMessage(expected, found) {
        function stringEscape(s) {
          function hex(ch) { return ch.charCodeAt(0).toString(16).toUpperCase(); }

          return s
            .replace(/\\/g,   '\\\\')
            .replace(/"/g,    '\\"')
            .replace(/\x08/g, '\\b')
            .replace(/\t/g,   '\\t')
            .replace(/\n/g,   '\\n')
            .replace(/\f/g,   '\\f')
            .replace(/\r/g,   '\\r')
            .replace(/[\x00-\x07\x0B\x0E\x0F]/g, function(ch) { return '\\x0' + hex(ch); })
            .replace(/[\x10-\x1F\x80-\xFF]/g,    function(ch) { return '\\x'  + hex(ch); })
            .replace(/[\u0180-\u0FFF]/g,         function(ch) { return '\\u0' + hex(ch); })
            .replace(/[\u1080-\uFFFF]/g,         function(ch) { return '\\u'  + hex(ch); });
        }

        var expectedDescs = new Array(expected.length),
            expectedDesc, foundDesc, i;

        for (i = 0; i < expected.length; i++) {
          expectedDescs[i] = expected[i].description;
        }

        expectedDesc = expected.length > 1
          ? expectedDescs.slice(0, -1).join(", ")
              + " or "
              + expectedDescs[expected.length - 1]
          : expectedDescs[0];

        foundDesc = found ? "\"" + stringEscape(found) + "\"" : "end of input";

        return "Expected " + expectedDesc + " but " + foundDesc + " found.";
      }

      var posDetails = peg$computePosDetails(pos),
          found      = pos < input.length ? input.charAt(pos) : null;

      if (expected !== null) {
        cleanupExpected(expected);
      }

      return new SyntaxError(
        message !== null ? message : buildMessage(expected, found),
        expected,
        found,
        pos,
        posDetails.line,
        posDetails.column
      );
    }

    function peg$parseGrammar() {
      var s0, s1, s2, s3, s4, s5, s6;

      s0 = peg$currPos;
      s1 = peg$parse__();
      if (s1 !== peg$FAILED) {
        s2 = peg$currPos;
        s3 = peg$parseInitializer();
        if (s3 !== peg$FAILED) {
          s4 = peg$parse__();
          if (s4 !== peg$FAILED) {
            s3 = [s3, s4];
            s2 = s3;
          } else {
            peg$currPos = s2;
            s2 = peg$c0;
          }
        } else {
          peg$currPos = s2;
          s2 = peg$c0;
        }
        if (s2 === peg$FAILED) {
          s2 = peg$c1;
        }
        if (s2 !== peg$FAILED) {
          s3 = [];
          s4 = peg$currPos;
          s5 = peg$parseRule();
          if (s5 !== peg$FAILED) {
            s6 = peg$parse__();
            if (s6 !== peg$FAILED) {
              s5 = [s5, s6];
              s4 = s5;
            } else {
              peg$currPos = s4;
              s4 = peg$c0;
            }
          } else {
            peg$currPos = s4;
            s4 = peg$c0;
          }
          if (s4 !== peg$FAILED) {
            while (s4 !== peg$FAILED) {
              s3.push(s4);
              s4 = peg$currPos;
              s5 = peg$parseRule();
              if (s5 !== peg$FAILED) {
                s6 = peg$parse__();
                if (s6 !== peg$FAILED) {
                  s5 = [s5, s6];
                  s4 = s5;
                } else {
                  peg$currPos = s4;
                  s4 = peg$c0;
                }
              } else {
                peg$currPos = s4;
                s4 = peg$c0;
              }
            }
          } else {
            s3 = peg$c0;
          }
          if (s3 !== peg$FAILED) {
            peg$reportedPos = s0;
            s1 = peg$c3(s2, s3);
            s0 = s1;
          } else {
            peg$currPos = s0;
            s0 = peg$c0;
          }
        } else {
          peg$currPos = s0;
          s0 = peg$c0;
        }
      } else {
        peg$currPos = s0;
        s0 = peg$c0;
      }

      return s0;
    }

    function peg$parseInitializer() {
      var s0, s1, s2, s3, s4;

      s0 = peg$currPos;
      s1 = peg$parseAction();
      if (s1 !== peg$FAILED) {
        s2 = peg$currPos;
        s3 = peg$parse__();
        if (s3 !== peg$FAILED) {
          if (input.charCodeAt(peg$currPos) === 59) {
            s4 = peg$c4;
            peg$currPos++;
          } else {
            s4 = peg$FAILED;
            if (peg$silentFails === 0) { peg$fail(peg$c5); }
          }
          if (s4 !== peg$FAILED) {
            s3 = [s3, s4];
            s2 = s3;
          } else {
            peg$currPos = s2;
            s2 = peg$c0;
          }
        } else {
          peg$currPos = s2;
          s2 = peg$c0;
        }
        if (s2 === peg$FAILED) {
          s2 = peg$c1;
        }
        if (s2 !== peg$FAILED) {
          peg$reportedPos = s0;
          s1 = peg$c6(s1);
          s0 = s1;
        } else {
          peg$currPos = s0;
          s0 = peg$c0;
        }
      } else {
        peg$currPos = s0;
        s0 = peg$c0;
      }

      return s0;
    }

    function peg$parseRule() {
      var s0, s1, s2, s3, s4, s5, s6, s7, s8, s9;

      s0 = peg$currPos;
      s1 = peg$parseIdentifier();
      if (s1 !== peg$FAILED) {
        s2 = peg$parse__();
        if (s2 !== peg$FAILED) {
          s3 = peg$currPos;
          s4 = peg$parseStringLiteral();
          if (s4 !== peg$FAILED) {
            s5 = peg$parse__();
            if (s5 !== peg$FAILED) {
              s4 = [s4, s5];
              s3 = s4;
            } else {
              peg$currPos = s3;
              s3 = peg$c0;
            }
          } else {
            peg$currPos = s3;
            s3 = peg$c0;
          }
          if (s3 === peg$FAILED) {
            s3 = peg$c1;
          }
          if (s3 !== peg$FAILED) {
            if (input.charCodeAt(peg$currPos) === 61) {
              s4 = peg$c7;
              peg$currPos++;
            } else {
              s4 = peg$FAILED;
              if (peg$silentFails === 0) { peg$fail(peg$c8); }
            }
            if (s4 !== peg$FAILED) {
              s5 = peg$parse__();
              if (s5 !== peg$FAILED) {
                s6 = peg$parseChoice();
                if (s6 !== peg$FAILED) {
                  s7 = peg$currPos;
                  s8 = peg$parse__();
                  if (s8 !== peg$FAILED) {
                    if (input.charCodeAt(peg$currPos) === 59) {
                      s9 = peg$c4;
                      peg$currPos++;
                    } else {
                      s9 = peg$FAILED;
                      if (peg$silentFails === 0) { peg$fail(peg$c5); }
                    }
                    if (s9 !== peg$FAILED) {
                      s8 = [s8, s9];
                      s7 = s8;
                    } else {
                      peg$currPos = s7;
                      s7 = peg$c0;
                    }
                  } else {
                    peg$currPos = s7;
                    s7 = peg$c0;
                  }
                  if (s7 === peg$FAILED) {
                    s7 = peg$c1;
                  }
                  if (s7 !== peg$FAILED) {
                    peg$reportedPos = s0;
                    s1 = peg$c9(s1, s3, s6);
                    s0 = s1;
                  } else {
                    peg$currPos = s0;
                    s0 = peg$c0;
                  }
                } else {
                  peg$currPos = s0;
                  s0 = peg$c0;
                }
              } else {
                peg$currPos = s0;
                s0 = peg$c0;
              }
            } else {
              peg$currPos = s0;
              s0 = peg$c0;
            }
          } else {
            peg$currPos = s0;
            s0 = peg$c0;
          }
        } else {
          peg$currPos = s0;
          s0 = peg$c0;
        }
      } else {
        peg$currPos = s0;
        s0 = peg$c0;
      }

      return s0;
    }

    function peg$parseChoice() {
      var s0, s1, s2, s3, s4, s5, s6, s7;

      s0 = peg$currPos;
      s1 = peg$parseSequence();
      if (s1 !== peg$FAILED) {
        s2 = [];
        s3 = peg$currPos;
        s4 = peg$parse__();
        if (s4 !== peg$FAILED) {
          if (input.charCodeAt(peg$currPos) === 47) {
            s5 = peg$c10;
            peg$currPos++;
          } else {
            s5 = peg$FAILED;
            if (peg$silentFails === 0) { peg$fail(peg$c11); }
          }
          if (s5 !== peg$FAILED) {
            s6 = peg$parse__();
            if (s6 !== peg$FAILED) {
              s7 = peg$parseSequence();
              if (s7 !== peg$FAILED) {
                s4 = [s4, s5, s6, s7];
                s3 = s4;
              } else {
                peg$currPos = s3;
                s3 = peg$c0;
              }
            } else {
              peg$currPos = s3;
              s3 = peg$c0;
            }
          } else {
            peg$currPos = s3;
            s3 = peg$c0;
          }
        } else {
          peg$currPos = s3;
          s3 = peg$c0;
        }
        while (s3 !== peg$FAILED) {
          s2.push(s3);
          s3 = peg$currPos;
          s4 = peg$parse__();
          if (s4 !== peg$FAILED) {
            if (input.charCodeAt(peg$currPos) === 47) {
              s5 = peg$c10;
              peg$currPos++;
            } else {
              s5 = peg$FAILED;
              if (peg$silentFails === 0) { peg$fail(peg$c11); }
            }
            if (s5 !== peg$FAILED) {
              s6 = peg$parse__();
              if (s6 !== peg$FAILED) {
                s7 = peg$parseSequence();
                if (s7 !== peg$FAILED) {
                  s4 = [s4, s5, s6, s7];
                  s3 = s4;
                } else {
                  peg$currPos = s3;
                  s3 = peg$c0;
                }
              } else {
                peg$currPos = s3;
                s3 = peg$c0;
              }
            } else {
              peg$currPos = s3;
              s3 = peg$c0;
            }
          } else {
            peg$currPos = s3;
            s3 = peg$c0;
          }
        }
        if (s2 !== peg$FAILED) {
          peg$reportedPos = s0;
          s1 = peg$c12(s1, s2);
          s0 = s1;
        } else {
          peg$currPos = s0;
          s0 = peg$c0;
        }
      } else {
        peg$currPos = s0;
        s0 = peg$c0;
      }

      return s0;
    }

    function peg$parseSequence() {
      var s0, s1, s2, s3, s4, s5;

      s0 = peg$currPos;
      s1 = peg$parseLabeled();
      if (s1 !== peg$FAILED) {
        s2 = [];
        s3 = peg$currPos;
        s4 = peg$parse__();
        if (s4 !== peg$FAILED) {
          s5 = peg$parseLabeled();
          if (s5 !== peg$FAILED) {
            s4 = [s4, s5];
            s3 = s4;
          } else {
            peg$currPos = s3;
            s3 = peg$c0;
          }
        } else {
          peg$currPos = s3;
          s3 = peg$c0;
        }
        while (s3 !== peg$FAILED) {
          s2.push(s3);
          s3 = peg$currPos;
          s4 = peg$parse__();
          if (s4 !== peg$FAILED) {
            s5 = peg$parseLabeled();
            if (s5 !== peg$FAILED) {
              s4 = [s4, s5];
              s3 = s4;
            } else {
              peg$currPos = s3;
              s3 = peg$c0;
            }
          } else {
            peg$currPos = s3;
            s3 = peg$c0;
          }
        }
        if (s2 !== peg$FAILED) {
          s3 = peg$parse__();
          if (s3 !== peg$FAILED) {
            s4 = peg$parseAction();
            if (s4 !== peg$FAILED) {
              peg$reportedPos = s0;
              s1 = peg$c13(s1, s2, s4);
              s0 = s1;
            } else {
              peg$currPos = s0;
              s0 = peg$c0;
            }
          } else {
            peg$currPos = s0;
            s0 = peg$c0;
          }
        } else {
          peg$currPos = s0;
          s0 = peg$c0;
        }
      } else {
        peg$currPos = s0;
        s0 = peg$c0;
      }
      if (s0 === peg$FAILED) {
        s0 = peg$currPos;
        s1 = peg$parseLabeled();
        if (s1 !== peg$FAILED) {
          s2 = [];
          s3 = peg$currPos;
          s4 = peg$parse__();
          if (s4 !== peg$FAILED) {
            s5 = peg$parseLabeled();
            if (s5 !== peg$FAILED) {
              s4 = [s4, s5];
              s3 = s4;
            } else {
              peg$currPos = s3;
              s3 = peg$c0;
            }
          } else {
            peg$currPos = s3;
            s3 = peg$c0;
          }
          while (s3 !== peg$FAILED) {
            s2.push(s3);
            s3 = peg$currPos;
            s4 = peg$parse__();
            if (s4 !== peg$FAILED) {
              s5 = peg$parseLabeled();
              if (s5 !== peg$FAILED) {
                s4 = [s4, s5];
                s3 = s4;
              } else {
                peg$currPos = s3;
                s3 = peg$c0;
              }
            } else {
              peg$currPos = s3;
              s3 = peg$c0;
            }
          }
          if (s2 !== peg$FAILED) {
            peg$reportedPos = s0;
            s1 = peg$c14(s1, s2);
            s0 = s1;
          } else {
            peg$currPos = s0;
            s0 = peg$c0;
          }
        } else {
          peg$currPos = s0;
          s0 = peg$c0;
        }
      }

      return s0;
    }

    function peg$parseLabeled() {
      var s0, s1, s2, s3, s4, s5;

      s0 = peg$currPos;
      s1 = peg$parseIdentifier();
      if (s1 !== peg$FAILED) {
        s2 = peg$parse__();
        if (s2 !== peg$FAILED) {
          if (input.charCodeAt(peg$currPos) === 58) {
            s3 = peg$c15;
            peg$currPos++;
          } else {
            s3 = peg$FAILED;
            if (peg$silentFails === 0) { peg$fail(peg$c16); }
          }
          if (s3 !== peg$FAILED) {
            s4 = peg$parse__();
            if (s4 !== peg$FAILED) {
              s5 = peg$parsePrefixed();
              if (s5 !== peg$FAILED) {
                peg$reportedPos = s0;
                s1 = peg$c17(s1, s5);
                s0 = s1;
              } else {
                peg$currPos = s0;
                s0 = peg$c0;
              }
            } else {
              peg$currPos = s0;
              s0 = peg$c0;
            }
          } else {
            peg$currPos = s0;
            s0 = peg$c0;
          }
        } else {
          peg$currPos = s0;
          s0 = peg$c0;
        }
      } else {
        peg$currPos = s0;
        s0 = peg$c0;
      }
      if (s0 === peg$FAILED) {
        s0 = peg$parsePrefixed();
      }

      return s0;
    }

    function peg$parsePrefixed() {
      var s0, s1, s2, s3;

      s0 = peg$currPos;
      if (input.charCodeAt(peg$currPos) === 36) {
        s1 = peg$c18;
        peg$currPos++;
      } else {
        s1 = peg$FAILED;
        if (peg$silentFails === 0) { peg$fail(peg$c19); }
      }
      if (s1 !== peg$FAILED) {
        s2 = peg$parse__();
        if (s2 !== peg$FAILED) {
          s3 = peg$parseSuffixed();
          if (s3 !== peg$FAILED) {
            peg$reportedPos = s0;
            s1 = peg$c20(s3);
            s0 = s1;
          } else {
            peg$currPos = s0;
            s0 = peg$c0;
          }
        } else {
          peg$currPos = s0;
          s0 = peg$c0;
        }
      } else {
        peg$currPos = s0;
        s0 = peg$c0;
      }
      if (s0 === peg$FAILED) {
        s0 = peg$currPos;
        if (input.charCodeAt(peg$currPos) === 38) {
          s1 = peg$c21;
          peg$currPos++;
        } else {
          s1 = peg$FAILED;
          if (peg$silentFails === 0) { peg$fail(peg$c22); }
        }
        if (s1 !== peg$FAILED) {
          s2 = peg$parse__();
          if (s2 !== peg$FAILED) {
            s3 = peg$parseAction();
            if (s3 !== peg$FAILED) {
              peg$reportedPos = s0;
              s1 = peg$c23(s3);
              s0 = s1;
            } else {
              peg$currPos = s0;
              s0 = peg$c0;
            }
          } else {
            peg$currPos = s0;
            s0 = peg$c0;
          }
        } else {
          peg$currPos = s0;
          s0 = peg$c0;
        }
        if (s0 === peg$FAILED) {
          s0 = peg$currPos;
          if (input.charCodeAt(peg$currPos) === 38) {
            s1 = peg$c21;
            peg$currPos++;
          } else {
            s1 = peg$FAILED;
            if (peg$silentFails === 0) { peg$fail(peg$c22); }
          }
          if (s1 !== peg$FAILED) {
            s2 = peg$parse__();
            if (s2 !== peg$FAILED) {
              s3 = peg$parseSuffixed();
              if (s3 !== peg$FAILED) {
                peg$reportedPos = s0;
                s1 = peg$c24(s3);
                s0 = s1;
              } else {
                peg$currPos = s0;
                s0 = peg$c0;
              }
            } else {
              peg$currPos = s0;
              s0 = peg$c0;
            }
          } else {
            peg$currPos = s0;
            s0 = peg$c0;
          }
          if (s0 === peg$FAILED) {
            s0 = peg$currPos;
            if (input.charCodeAt(peg$currPos) === 33) {
              s1 = peg$c25;
              peg$currPos++;
            } else {
              s1 = peg$FAILED;
              if (peg$silentFails === 0) { peg$fail(peg$c26); }
            }
            if (s1 !== peg$FAILED) {
              s2 = peg$parse__();
              if (s2 !== peg$FAILED) {
                s3 = peg$parseAction();
                if (s3 !== peg$FAILED) {
                  peg$reportedPos = s0;
                  s1 = peg$c27(s3);
                  s0 = s1;
                } else {
                  peg$currPos = s0;
                  s0 = peg$c0;
                }
              } else {
                peg$currPos = s0;
                s0 = peg$c0;
              }
            } else {
              peg$currPos = s0;
              s0 = peg$c0;
            }
            if (s0 === peg$FAILED) {
              s0 = peg$currPos;
              if (input.charCodeAt(peg$currPos) === 33) {
                s1 = peg$c25;
                peg$currPos++;
              } else {
                s1 = peg$FAILED;
                if (peg$silentFails === 0) { peg$fail(peg$c26); }
              }
              if (s1 !== peg$FAILED) {
                s2 = peg$parse__();
                if (s2 !== peg$FAILED) {
                  s3 = peg$parseSuffixed();
                  if (s3 !== peg$FAILED) {
                    peg$reportedPos = s0;
                    s1 = peg$c28(s3);
                    s0 = s1;
                  } else {
                    peg$currPos = s0;
                    s0 = peg$c0;
                  }
                } else {
                  peg$currPos = s0;
                  s0 = peg$c0;
                }
              } else {
                peg$currPos = s0;
                s0 = peg$c0;
              }
              if (s0 === peg$FAILED) {
                s0 = peg$parseSuffixed();
              }
            }
          }
        }
      }

      return s0;
    }

    function peg$parseSuffixed() {
      var s0, s1, s2, s3;

      s0 = peg$currPos;
      s1 = peg$parsePrimary();
      if (s1 !== peg$FAILED) {
        s2 = peg$parse__();
        if (s2 !== peg$FAILED) {
          if (input.charCodeAt(peg$currPos) === 63) {
            s3 = peg$c29;
            peg$currPos++;
          } else {
            s3 = peg$FAILED;
            if (peg$silentFails === 0) { peg$fail(peg$c30); }
          }
          if (s3 !== peg$FAILED) {
            peg$reportedPos = s0;
            s1 = peg$c31(s1);
            s0 = s1;
          } else {
            peg$currPos = s0;
            s0 = peg$c0;
          }
        } else {
          peg$currPos = s0;
          s0 = peg$c0;
        }
      } else {
        peg$currPos = s0;
        s0 = peg$c0;
      }
      if (s0 === peg$FAILED) {
        s0 = peg$currPos;
        s1 = peg$parsePrimary();
        if (s1 !== peg$FAILED) {
          s2 = peg$parse__();
          if (s2 !== peg$FAILED) {
            if (input.charCodeAt(peg$currPos) === 42) {
              s3 = peg$c32;
              peg$currPos++;
            } else {
              s3 = peg$FAILED;
              if (peg$silentFails === 0) { peg$fail(peg$c33); }
            }
            if (s3 !== peg$FAILED) {
              peg$reportedPos = s0;
              s1 = peg$c34(s1);
              s0 = s1;
            } else {
              peg$currPos = s0;
              s0 = peg$c0;
            }
          } else {
            peg$currPos = s0;
            s0 = peg$c0;
          }
        } else {
          peg$currPos = s0;
          s0 = peg$c0;
        }
        if (s0 === peg$FAILED) {
          s0 = peg$currPos;
          s1 = peg$parsePrimary();
          if (s1 !== peg$FAILED) {
            s2 = peg$parse__();
            if (s2 !== peg$FAILED) {
              if (input.charCodeAt(peg$currPos) === 43) {
                s3 = peg$c35;
                peg$currPos++;
              } else {
                s3 = peg$FAILED;
                if (peg$silentFails === 0) { peg$fail(peg$c36); }
              }
              if (s3 !== peg$FAILED) {
                peg$reportedPos = s0;
                s1 = peg$c37(s1);
                s0 = s1;
              } else {
                peg$currPos = s0;
                s0 = peg$c0;
              }
            } else {
              peg$currPos = s0;
              s0 = peg$c0;
            }
          } else {
            peg$currPos = s0;
            s0 = peg$c0;
          }
          if (s0 === peg$FAILED) {
            s0 = peg$parsePrimary();
          }
        }
      }

      return s0;
    }

    function peg$parsePrimary() {
      var s0, s1, s2, s3, s4, s5, s6, s7;

      s0 = peg$currPos;
      s1 = peg$parseIdentifier();
      if (s1 !== peg$FAILED) {
        s2 = peg$currPos;
        peg$silentFails++;
        s3 = peg$currPos;
        s4 = peg$parse__();
        if (s4 !== peg$FAILED) {
          s5 = peg$currPos;
          s6 = peg$parseStringLiteral();
          if (s6 !== peg$FAILED) {
            s7 = peg$parse__();
            if (s7 !== peg$FAILED) {
              s6 = [s6, s7];
              s5 = s6;
            } else {
              peg$currPos = s5;
              s5 = peg$c0;
            }
          } else {
            peg$currPos = s5;
            s5 = peg$c0;
          }
          if (s5 === peg$FAILED) {
            s5 = peg$c1;
          }
          if (s5 !== peg$FAILED) {
            if (input.charCodeAt(peg$currPos) === 61) {
              s6 = peg$c7;
              peg$currPos++;
            } else {
              s6 = peg$FAILED;
              if (peg$silentFails === 0) { peg$fail(peg$c8); }
            }
            if (s6 !== peg$FAILED) {
              s4 = [s4, s5, s6];
              s3 = s4;
            } else {
              peg$currPos = s3;
              s3 = peg$c0;
            }
          } else {
            peg$currPos = s3;
            s3 = peg$c0;
          }
        } else {
          peg$currPos = s3;
          s3 = peg$c0;
        }
        peg$silentFails--;
        if (s3 === peg$FAILED) {
          s2 = peg$c38;
        } else {
          peg$currPos = s2;
          s2 = peg$c0;
        }
        if (s2 !== peg$FAILED) {
          peg$reportedPos = s0;
          s1 = peg$c39(s1);
          s0 = s1;
        } else {
          peg$currPos = s0;
          s0 = peg$c0;
        }
      } else {
        peg$currPos = s0;
        s0 = peg$c0;
      }
      if (s0 === peg$FAILED) {
        s0 = peg$parseLiteralMatcher();
        if (s0 === peg$FAILED) {
          s0 = peg$parseCharacterClassMatcher();
          if (s0 === peg$FAILED) {
            s0 = peg$currPos;
            if (input.charCodeAt(peg$currPos) === 46) {
              s1 = peg$c40;
              peg$currPos++;
            } else {
              s1 = peg$FAILED;
              if (peg$silentFails === 0) { peg$fail(peg$c41); }
            }
            if (s1 !== peg$FAILED) {
              peg$reportedPos = s0;
              s1 = peg$c42();
            }
            s0 = s1;
            if (s0 === peg$FAILED) {
              s0 = peg$currPos;
              if (input.charCodeAt(peg$currPos) === 40) {
                s1 = peg$c43;
                peg$currPos++;
              } else {
                s1 = peg$FAILED;
                if (peg$silentFails === 0) { peg$fail(peg$c44); }
              }
              if (s1 !== peg$FAILED) {
                s2 = peg$parse__();
                if (s2 !== peg$FAILED) {
                  s3 = peg$parseChoice();
                  if (s3 !== peg$FAILED) {
                    s4 = peg$parse__();
                    if (s4 !== peg$FAILED) {
                      if (input.charCodeAt(peg$currPos) === 41) {
                        s5 = peg$c45;
                        peg$currPos++;
                      } else {
                        s5 = peg$FAILED;
                        if (peg$silentFails === 0) { peg$fail(peg$c46); }
                      }
                      if (s5 !== peg$FAILED) {
                        peg$reportedPos = s0;
                        s1 = peg$c47(s3);
                        s0 = s1;
                      } else {
                        peg$currPos = s0;
                        s0 = peg$c0;
                      }
                    } else {
                      peg$currPos = s0;
                      s0 = peg$c0;
                    }
                  } else {
                    peg$currPos = s0;
                    s0 = peg$c0;
                  }
                } else {
                  peg$currPos = s0;
                  s0 = peg$c0;
                }
              } else {
                peg$currPos = s0;
                s0 = peg$c0;
              }
            }
          }
        }
      }

      return s0;
    }

    function peg$parseSourceCharacter() {
      var s0;

      if (input.length > peg$currPos) {
        s0 = input.charAt(peg$currPos);
        peg$currPos++;
      } else {
        s0 = peg$FAILED;
        if (peg$silentFails === 0) { peg$fail(peg$c48); }
      }

      return s0;
    }

    function peg$parseWhiteSpace() {
      var s0, s1;

      peg$silentFails++;
      if (input.charCodeAt(peg$currPos) === 9) {
        s0 = peg$c50;
        peg$currPos++;
      } else {
        s0 = peg$FAILED;
        if (peg$silentFails === 0) { peg$fail(peg$c51); }
      }
      if (s0 === peg$FAILED) {
        if (input.charCodeAt(peg$currPos) === 11) {
          s0 = peg$c52;
          peg$currPos++;
        } else {
          s0 = peg$FAILED;
          if (peg$silentFails === 0) { peg$fail(peg$c53); }
        }
        if (s0 === peg$FAILED) {
          if (input.charCodeAt(peg$currPos) === 12) {
            s0 = peg$c54;
            peg$currPos++;
          } else {
            s0 = peg$FAILED;
            if (peg$silentFails === 0) { peg$fail(peg$c55); }
          }
          if (s0 === peg$FAILED) {
            if (input.charCodeAt(peg$currPos) === 32) {
              s0 = peg$c56;
              peg$currPos++;
            } else {
              s0 = peg$FAILED;
              if (peg$silentFails === 0) { peg$fail(peg$c57); }
            }
            if (s0 === peg$FAILED) {
              if (input.charCodeAt(peg$currPos) === 160) {
                s0 = peg$c58;
                peg$currPos++;
              } else {
                s0 = peg$FAILED;
                if (peg$silentFails === 0) { peg$fail(peg$c59); }
              }
              if (s0 === peg$FAILED) {
                if (input.charCodeAt(peg$currPos) === 65279) {
                  s0 = peg$c60;
                  peg$currPos++;
                } else {
                  s0 = peg$FAILED;
                  if (peg$silentFails === 0) { peg$fail(peg$c61); }
                }
                if (s0 === peg$FAILED) {
                  s0 = peg$parseZs();
                }
              }
            }
          }
        }
      }
      peg$silentFails--;
      if (s0 === peg$FAILED) {
        s1 = peg$FAILED;
        if (peg$silentFails === 0) { peg$fail(peg$c49); }
      }

      return s0;
    }

    function peg$parseLineTerminator() {
      var s0;

      if (peg$c62.test(input.charAt(peg$currPos))) {
        s0 = input.charAt(peg$currPos);
        peg$currPos++;
      } else {
        s0 = peg$FAILED;
        if (peg$silentFails === 0) { peg$fail(peg$c63); }
      }

      return s0;
    }

    function peg$parseLineTerminatorSequence() {
      var s0, s1;

      peg$silentFails++;
      if (input.charCodeAt(peg$currPos) === 10) {
        s0 = peg$c65;
        peg$currPos++;
      } else {
        s0 = peg$FAILED;
        if (peg$silentFails === 0) { peg$fail(peg$c66); }
      }
      if (s0 === peg$FAILED) {
        if (input.substr(peg$currPos, 2) === peg$c67) {
          s0 = peg$c67;
          peg$currPos += 2;
        } else {
          s0 = peg$FAILED;
          if (peg$silentFails === 0) { peg$fail(peg$c68); }
        }
        if (s0 === peg$FAILED) {
          if (input.charCodeAt(peg$currPos) === 13) {
            s0 = peg$c69;
            peg$currPos++;
          } else {
            s0 = peg$FAILED;
            if (peg$silentFails === 0) { peg$fail(peg$c70); }
          }
          if (s0 === peg$FAILED) {
            if (input.charCodeAt(peg$currPos) === 8232) {
              s0 = peg$c71;
              peg$currPos++;
            } else {
              s0 = peg$FAILED;
              if (peg$silentFails === 0) { peg$fail(peg$c72); }
            }
            if (s0 === peg$FAILED) {
              if (input.charCodeAt(peg$currPos) === 8233) {
                s0 = peg$c73;
                peg$currPos++;
              } else {
                s0 = peg$FAILED;
                if (peg$silentFails === 0) { peg$fail(peg$c74); }
              }
            }
          }
        }
      }
      peg$silentFails--;
      if (s0 === peg$FAILED) {
        s1 = peg$FAILED;
        if (peg$silentFails === 0) { peg$fail(peg$c64); }
      }

      return s0;
    }

    function peg$parseComment() {
      var s0, s1;

      peg$silentFails++;
      s0 = peg$parseMultiLineComment();
      if (s0 === peg$FAILED) {
        s0 = peg$parseSingleLineComment();
      }
      peg$silentFails--;
      if (s0 === peg$FAILED) {
        s1 = peg$FAILED;
        if (peg$silentFails === 0) { peg$fail(peg$c75); }
      }

      return s0;
    }

    function peg$parseMultiLineComment() {
      var s0, s1, s2, s3, s4, s5;

      s0 = peg$currPos;
      if (input.substr(peg$currPos, 2) === peg$c76) {
        s1 = peg$c76;
        peg$currPos += 2;
      } else {
        s1 = peg$FAILED;
        if (peg$silentFails === 0) { peg$fail(peg$c77); }
      }
      if (s1 !== peg$FAILED) {
        s2 = [];
        s3 = peg$currPos;
        s4 = peg$currPos;
        peg$silentFails++;
        if (input.substr(peg$currPos, 2) === peg$c78) {
          s5 = peg$c78;
          peg$currPos += 2;
        } else {
          s5 = peg$FAILED;
          if (peg$silentFails === 0) { peg$fail(peg$c79); }
        }
        peg$silentFails--;
        if (s5 === peg$FAILED) {
          s4 = peg$c38;
        } else {
          peg$currPos = s4;
          s4 = peg$c0;
        }
        if (s4 !== peg$FAILED) {
          s5 = peg$parseSourceCharacter();
          if (s5 !== peg$FAILED) {
            s4 = [s4, s5];
            s3 = s4;
          } else {
            peg$currPos = s3;
            s3 = peg$c0;
          }
        } else {
          peg$currPos = s3;
          s3 = peg$c0;
        }
        while (s3 !== peg$FAILED) {
          s2.push(s3);
          s3 = peg$currPos;
          s4 = peg$currPos;
          peg$silentFails++;
          if (input.substr(peg$currPos, 2) === peg$c78) {
            s5 = peg$c78;
            peg$currPos += 2;
          } else {
            s5 = peg$FAILED;
            if (peg$silentFails === 0) { peg$fail(peg$c79); }
          }
          peg$silentFails--;
          if (s5 === peg$FAILED) {
            s4 = peg$c38;
          } else {
            peg$currPos = s4;
            s4 = peg$c0;
          }
          if (s4 !== peg$FAILED) {
            s5 = peg$parseSourceCharacter();
            if (s5 !== peg$FAILED) {
              s4 = [s4, s5];
              s3 = s4;
            } else {
              peg$currPos = s3;
              s3 = peg$c0;
            }
          } else {
            peg$currPos = s3;
            s3 = peg$c0;
          }
        }
        if (s2 !== peg$FAILED) {
          if (input.substr(peg$currPos, 2) === peg$c78) {
            s3 = peg$c78;
            peg$currPos += 2;
          } else {
            s3 = peg$FAILED;
            if (peg$silentFails === 0) { peg$fail(peg$c79); }
          }
          if (s3 !== peg$FAILED) {
            s1 = [s1, s2, s3];
            s0 = s1;
          } else {
            peg$currPos = s0;
            s0 = peg$c0;
          }
        } else {
          peg$currPos = s0;
          s0 = peg$c0;
        }
      } else {
        peg$currPos = s0;
        s0 = peg$c0;
      }

      return s0;
    }

    function peg$parseSingleLineComment() {
      var s0, s1, s2, s3, s4, s5;

      s0 = peg$currPos;
      if (input.substr(peg$currPos, 2) === peg$c80) {
        s1 = peg$c80;
        peg$currPos += 2;
      } else {
        s1 = peg$FAILED;
        if (peg$silentFails === 0) { peg$fail(peg$c81); }
      }
      if (s1 !== peg$FAILED) {
        s2 = [];
        s3 = peg$currPos;
        s4 = peg$currPos;
        peg$silentFails++;
        s5 = peg$parseLineTerminator();
        peg$silentFails--;
        if (s5 === peg$FAILED) {
          s4 = peg$c38;
        } else {
          peg$currPos = s4;
          s4 = peg$c0;
        }
        if (s4 !== peg$FAILED) {
          s5 = peg$parseSourceCharacter();
          if (s5 !== peg$FAILED) {
            s4 = [s4, s5];
            s3 = s4;
          } else {
            peg$currPos = s3;
            s3 = peg$c0;
          }
        } else {
          peg$currPos = s3;
          s3 = peg$c0;
        }
        while (s3 !== peg$FAILED) {
          s2.push(s3);
          s3 = peg$currPos;
          s4 = peg$currPos;
          peg$silentFails++;
          s5 = peg$parseLineTerminator();
          peg$silentFails--;
          if (s5 === peg$FAILED) {
            s4 = peg$c38;
          } else {
            peg$currPos = s4;
            s4 = peg$c0;
          }
          if (s4 !== peg$FAILED) {
            s5 = peg$parseSourceCharacter();
            if (s5 !== peg$FAILED) {
              s4 = [s4, s5];
              s3 = s4;
            } else {
              peg$currPos = s3;
              s3 = peg$c0;
            }
          } else {
            peg$currPos = s3;
            s3 = peg$c0;
          }
        }
        if (s2 !== peg$FAILED) {
          s1 = [s1, s2];
          s0 = s1;
        } else {
          peg$currPos = s0;
          s0 = peg$c0;
        }
      } else {
        peg$currPos = s0;
        s0 = peg$c0;
      }

      return s0;
    }

    function peg$parseAction() {
      var s0, s1, s2;

      peg$silentFails++;
      s0 = peg$currPos;
      s1 = peg$parseBraced();
      if (s1 !== peg$FAILED) {
        s2 = peg$parse__();
        if (s2 !== peg$FAILED) {
          peg$reportedPos = s0;
          s1 = peg$c83(s1);
          s0 = s1;
        } else {
          peg$currPos = s0;
          s0 = peg$c0;
        }
      } else {
        peg$currPos = s0;
        s0 = peg$c0;
      }
      peg$silentFails--;
      if (s0 === peg$FAILED) {
        s1 = peg$FAILED;
        if (peg$silentFails === 0) { peg$fail(peg$c82); }
      }

      return s0;
    }

    function peg$parseBraced() {
      var s0, s1, s2, s3, s4;

      s0 = peg$currPos;
      s1 = peg$currPos;
      if (input.charCodeAt(peg$currPos) === 123) {
        s2 = peg$c84;
        peg$currPos++;
      } else {
        s2 = peg$FAILED;
        if (peg$silentFails === 0) { peg$fail(peg$c85); }
      }
      if (s2 !== peg$FAILED) {
        s3 = [];
        s4 = peg$parseBraced();
        if (s4 === peg$FAILED) {
          s4 = peg$parseNonBraceCharacters();
        }
        while (s4 !== peg$FAILED) {
          s3.push(s4);
          s4 = peg$parseBraced();
          if (s4 === peg$FAILED) {
            s4 = peg$parseNonBraceCharacters();
          }
        }
        if (s3 !== peg$FAILED) {
          if (input.charCodeAt(peg$currPos) === 125) {
            s4 = peg$c86;
            peg$currPos++;
          } else {
            s4 = peg$FAILED;
            if (peg$silentFails === 0) { peg$fail(peg$c87); }
          }
          if (s4 !== peg$FAILED) {
            s2 = [s2, s3, s4];
            s1 = s2;
          } else {
            peg$currPos = s1;
            s1 = peg$c0;
          }
        } else {
          peg$currPos = s1;
          s1 = peg$c0;
        }
      } else {
        peg$currPos = s1;
        s1 = peg$c0;
      }
      if (s1 !== peg$FAILED) {
        s1 = input.substring(s0, peg$currPos);
      }
      s0 = s1;

      return s0;
    }

    function peg$parseNonBraceCharacters() {
      var s0, s1;

      s0 = [];
      s1 = peg$parseNonBraceCharacter();
      if (s1 !== peg$FAILED) {
        while (s1 !== peg$FAILED) {
          s0.push(s1);
          s1 = peg$parseNonBraceCharacter();
        }
      } else {
        s0 = peg$c0;
      }

      return s0;
    }

    function peg$parseNonBraceCharacter() {
      var s0;

      if (peg$c88.test(input.charAt(peg$currPos))) {
        s0 = input.charAt(peg$currPos);
        peg$currPos++;
      } else {
        s0 = peg$FAILED;
        if (peg$silentFails === 0) { peg$fail(peg$c89); }
      }

      return s0;
    }

    function peg$parseIdentifier() {
      var s0, s1, s2, s3, s4;

      peg$silentFails++;
      s0 = peg$currPos;
      s1 = peg$currPos;
      s2 = peg$parseLetter();
      if (s2 === peg$FAILED) {
        if (input.charCodeAt(peg$currPos) === 95) {
          s2 = peg$c91;
          peg$currPos++;
        } else {
          s2 = peg$FAILED;
          if (peg$silentFails === 0) { peg$fail(peg$c92); }
        }
      }
      if (s2 !== peg$FAILED) {
        s3 = [];
        s4 = peg$parseLetter();
        if (s4 === peg$FAILED) {
          s4 = peg$parseDecimalDigit();
          if (s4 === peg$FAILED) {
            if (input.charCodeAt(peg$currPos) === 95) {
              s4 = peg$c91;
              peg$currPos++;
            } else {
              s4 = peg$FAILED;
              if (peg$silentFails === 0) { peg$fail(peg$c92); }
            }
          }
        }
        while (s4 !== peg$FAILED) {
          s3.push(s4);
          s4 = peg$parseLetter();
          if (s4 === peg$FAILED) {
            s4 = peg$parseDecimalDigit();
            if (s4 === peg$FAILED) {
              if (input.charCodeAt(peg$currPos) === 95) {
                s4 = peg$c91;
                peg$currPos++;
              } else {
                s4 = peg$FAILED;
                if (peg$silentFails === 0) { peg$fail(peg$c92); }
              }
            }
          }
        }
        if (s3 !== peg$FAILED) {
          s2 = [s2, s3];
          s1 = s2;
        } else {
          peg$currPos = s1;
          s1 = peg$c0;
        }
      } else {
        peg$currPos = s1;
        s1 = peg$c0;
      }
      if (s1 !== peg$FAILED) {
        s1 = input.substring(s0, peg$currPos);
      }
      s0 = s1;
      peg$silentFails--;
      if (s0 === peg$FAILED) {
        s1 = peg$FAILED;
        if (peg$silentFails === 0) { peg$fail(peg$c90); }
      }

      return s0;
    }

    function peg$parseLetter() {
      var s0;

      s0 = peg$parseLowerCaseLetter();
      if (s0 === peg$FAILED) {
        s0 = peg$parseUpperCaseLetter();
      }

      return s0;
    }

    function peg$parseLowerCaseLetter() {
      var s0;

      if (peg$c93.test(input.charAt(peg$currPos))) {
        s0 = input.charAt(peg$currPos);
        peg$currPos++;
      } else {
        s0 = peg$FAILED;
        if (peg$silentFails === 0) { peg$fail(peg$c94); }
      }

      return s0;
    }

    function peg$parseUpperCaseLetter() {
      var s0;

      if (peg$c95.test(input.charAt(peg$currPos))) {
        s0 = input.charAt(peg$currPos);
        peg$currPos++;
      } else {
        s0 = peg$FAILED;
        if (peg$silentFails === 0) { peg$fail(peg$c96); }
      }

      return s0;
    }

    function peg$parseLiteralMatcher() {
      var s0, s1, s2;

      peg$silentFails++;
      s0 = peg$currPos;
      s1 = peg$parseStringLiteral();
      if (s1 !== peg$FAILED) {
        if (input.charCodeAt(peg$currPos) === 105) {
          s2 = peg$c98;
          peg$currPos++;
        } else {
          s2 = peg$FAILED;
          if (peg$silentFails === 0) { peg$fail(peg$c99); }
        }
        if (s2 === peg$FAILED) {
          s2 = peg$c1;
        }
        if (s2 !== peg$FAILED) {
          peg$reportedPos = s0;
          s1 = peg$c100(s1, s2);
          s0 = s1;
        } else {
          peg$currPos = s0;
          s0 = peg$c0;
        }
      } else {
        peg$currPos = s0;
        s0 = peg$c0;
      }
      peg$silentFails--;
      if (s0 === peg$FAILED) {
        s1 = peg$FAILED;
        if (peg$silentFails === 0) { peg$fail(peg$c97); }
      }

      return s0;
    }

    function peg$parseStringLiteral() {
      var s0, s1, s2, s3;

      peg$silentFails++;
      s0 = peg$currPos;
      if (input.charCodeAt(peg$currPos) === 34) {
        s1 = peg$c102;
        peg$currPos++;
      } else {
        s1 = peg$FAILED;
        if (peg$silentFails === 0) { peg$fail(peg$c103); }
      }
      if (s1 !== peg$FAILED) {
        s2 = [];
        s3 = peg$parseDoubleStringCharacter();
        while (s3 !== peg$FAILED) {
          s2.push(s3);
          s3 = peg$parseDoubleStringCharacter();
        }
        if (s2 !== peg$FAILED) {
          if (input.charCodeAt(peg$currPos) === 34) {
            s3 = peg$c102;
            peg$currPos++;
          } else {
            s3 = peg$FAILED;
            if (peg$silentFails === 0) { peg$fail(peg$c103); }
          }
          if (s3 !== peg$FAILED) {
            peg$reportedPos = s0;
            s1 = peg$c104(s2);
            s0 = s1;
          } else {
            peg$currPos = s0;
            s0 = peg$c0;
          }
        } else {
          peg$currPos = s0;
          s0 = peg$c0;
        }
      } else {
        peg$currPos = s0;
        s0 = peg$c0;
      }
      if (s0 === peg$FAILED) {
        s0 = peg$currPos;
        if (input.charCodeAt(peg$currPos) === 39) {
          s1 = peg$c105;
          peg$currPos++;
        } else {
          s1 = peg$FAILED;
          if (peg$silentFails === 0) { peg$fail(peg$c106); }
        }
        if (s1 !== peg$FAILED) {
          s2 = [];
          s3 = peg$parseSingleStringCharacter();
          while (s3 !== peg$FAILED) {
            s2.push(s3);
            s3 = peg$parseSingleStringCharacter();
          }
          if (s2 !== peg$FAILED) {
            if (input.charCodeAt(peg$currPos) === 39) {
              s3 = peg$c105;
              peg$currPos++;
            } else {
              s3 = peg$FAILED;
              if (peg$silentFails === 0) { peg$fail(peg$c106); }
            }
            if (s3 !== peg$FAILED) {
              peg$reportedPos = s0;
              s1 = peg$c104(s2);
              s0 = s1;
            } else {
              peg$currPos = s0;
              s0 = peg$c0;
            }
          } else {
            peg$currPos = s0;
            s0 = peg$c0;
          }
        } else {
          peg$currPos = s0;
          s0 = peg$c0;
        }
      }
      peg$silentFails--;
      if (s0 === peg$FAILED) {
        s1 = peg$FAILED;
        if (peg$silentFails === 0) { peg$fail(peg$c101); }
      }

      return s0;
    }

    function peg$parseDoubleStringCharacter() {
      var s0, s1, s2;

      s0 = peg$currPos;
      s1 = peg$currPos;
      peg$silentFails++;
      if (input.charCodeAt(peg$currPos) === 34) {
        s2 = peg$c102;
        peg$currPos++;
      } else {
        s2 = peg$FAILED;
        if (peg$silentFails === 0) { peg$fail(peg$c103); }
      }
      if (s2 === peg$FAILED) {
        if (input.charCodeAt(peg$currPos) === 92) {
          s2 = peg$c107;
          peg$currPos++;
        } else {
          s2 = peg$FAILED;
          if (peg$silentFails === 0) { peg$fail(peg$c108); }
        }
        if (s2 === peg$FAILED) {
          s2 = peg$parseLineTerminator();
        }
      }
      peg$silentFails--;
      if (s2 === peg$FAILED) {
        s1 = peg$c38;
      } else {
        peg$currPos = s1;
        s1 = peg$c0;
      }
      if (s1 !== peg$FAILED) {
        s2 = peg$parseSourceCharacter();
        if (s2 !== peg$FAILED) {
          peg$reportedPos = s0;
          s1 = peg$c109();
          s0 = s1;
        } else {
          peg$currPos = s0;
          s0 = peg$c0;
        }
      } else {
        peg$currPos = s0;
        s0 = peg$c0;
      }
      if (s0 === peg$FAILED) {
        s0 = peg$currPos;
        if (input.charCodeAt(peg$currPos) === 92) {
          s1 = peg$c107;
          peg$currPos++;
        } else {
          s1 = peg$FAILED;
          if (peg$silentFails === 0) { peg$fail(peg$c108); }
        }
        if (s1 !== peg$FAILED) {
          s2 = peg$parseEscapeSequence();
          if (s2 !== peg$FAILED) {
            peg$reportedPos = s0;
            s1 = peg$c110(s2);
            s0 = s1;
          } else {
            peg$currPos = s0;
            s0 = peg$c0;
          }
        } else {
          peg$currPos = s0;
          s0 = peg$c0;
        }
        if (s0 === peg$FAILED) {
          s0 = peg$parseLineContinuation();
        }
      }

      return s0;
    }

    function peg$parseSingleStringCharacter() {
      var s0, s1, s2;

      s0 = peg$currPos;
      s1 = peg$currPos;
      peg$silentFails++;
      if (input.charCodeAt(peg$currPos) === 39) {
        s2 = peg$c105;
        peg$currPos++;
      } else {
        s2 = peg$FAILED;
        if (peg$silentFails === 0) { peg$fail(peg$c106); }
      }
      if (s2 === peg$FAILED) {
        if (input.charCodeAt(peg$currPos) === 92) {
          s2 = peg$c107;
          peg$currPos++;
        } else {
          s2 = peg$FAILED;
          if (peg$silentFails === 0) { peg$fail(peg$c108); }
        }
        if (s2 === peg$FAILED) {
          s2 = peg$parseLineTerminator();
        }
      }
      peg$silentFails--;
      if (s2 === peg$FAILED) {
        s1 = peg$c38;
      } else {
        peg$currPos = s1;
        s1 = peg$c0;
      }
      if (s1 !== peg$FAILED) {
        s2 = peg$parseSourceCharacter();
        if (s2 !== peg$FAILED) {
          peg$reportedPos = s0;
          s1 = peg$c109();
          s0 = s1;
        } else {
          peg$currPos = s0;
          s0 = peg$c0;
        }
      } else {
        peg$currPos = s0;
        s0 = peg$c0;
      }
      if (s0 === peg$FAILED) {
        s0 = peg$currPos;
        if (input.charCodeAt(peg$currPos) === 92) {
          s1 = peg$c107;
          peg$currPos++;
        } else {
          s1 = peg$FAILED;
          if (peg$silentFails === 0) { peg$fail(peg$c108); }
        }
        if (s1 !== peg$FAILED) {
          s2 = peg$parseEscapeSequence();
          if (s2 !== peg$FAILED) {
            peg$reportedPos = s0;
            s1 = peg$c110(s2);
            s0 = s1;
          } else {
            peg$currPos = s0;
            s0 = peg$c0;
          }
        } else {
          peg$currPos = s0;
          s0 = peg$c0;
        }
        if (s0 === peg$FAILED) {
          s0 = peg$parseLineContinuation();
        }
      }

      return s0;
    }

    function peg$parseCharacterClassMatcher() {
      var s0, s1, s2, s3, s4, s5;

      peg$silentFails++;
      s0 = peg$currPos;
      if (input.charCodeAt(peg$currPos) === 91) {
        s1 = peg$c112;
        peg$currPos++;
      } else {
        s1 = peg$FAILED;
        if (peg$silentFails === 0) { peg$fail(peg$c113); }
      }
      if (s1 !== peg$FAILED) {
        if (input.charCodeAt(peg$currPos) === 94) {
          s2 = peg$c114;
          peg$currPos++;
        } else {
          s2 = peg$FAILED;
          if (peg$silentFails === 0) { peg$fail(peg$c115); }
        }
        if (s2 === peg$FAILED) {
          s2 = peg$c1;
        }
        if (s2 !== peg$FAILED) {
          s3 = [];
          s4 = peg$parseClassCharacterRange();
          if (s4 === peg$FAILED) {
            s4 = peg$parseClassCharacter();
          }
          while (s4 !== peg$FAILED) {
            s3.push(s4);
            s4 = peg$parseClassCharacterRange();
            if (s4 === peg$FAILED) {
              s4 = peg$parseClassCharacter();
            }
          }
          if (s3 !== peg$FAILED) {
            if (input.charCodeAt(peg$currPos) === 93) {
              s4 = peg$c116;
              peg$currPos++;
            } else {
              s4 = peg$FAILED;
              if (peg$silentFails === 0) { peg$fail(peg$c117); }
            }
            if (s4 !== peg$FAILED) {
              if (input.charCodeAt(peg$currPos) === 105) {
                s5 = peg$c98;
                peg$currPos++;
              } else {
                s5 = peg$FAILED;
                if (peg$silentFails === 0) { peg$fail(peg$c99); }
              }
              if (s5 === peg$FAILED) {
                s5 = peg$c1;
              }
              if (s5 !== peg$FAILED) {
                peg$reportedPos = s0;
                s1 = peg$c118(s2, s3, s5);
                s0 = s1;
              } else {
                peg$currPos = s0;
                s0 = peg$c0;
              }
            } else {
              peg$currPos = s0;
              s0 = peg$c0;
            }
          } else {
            peg$currPos = s0;
            s0 = peg$c0;
          }
        } else {
          peg$currPos = s0;
          s0 = peg$c0;
        }
      } else {
        peg$currPos = s0;
        s0 = peg$c0;
      }
      peg$silentFails--;
      if (s0 === peg$FAILED) {
        s1 = peg$FAILED;
        if (peg$silentFails === 0) { peg$fail(peg$c111); }
      }

      return s0;
    }

    function peg$parseClassCharacterRange() {
      var s0, s1, s2, s3;

      s0 = peg$currPos;
      s1 = peg$parseClassCharacter();
      if (s1 !== peg$FAILED) {
        if (input.charCodeAt(peg$currPos) === 45) {
          s2 = peg$c119;
          peg$currPos++;
        } else {
          s2 = peg$FAILED;
          if (peg$silentFails === 0) { peg$fail(peg$c120); }
        }
        if (s2 !== peg$FAILED) {
          s3 = peg$parseClassCharacter();
          if (s3 !== peg$FAILED) {
            peg$reportedPos = s0;
            s1 = peg$c121(s1, s3);
            s0 = s1;
          } else {
            peg$currPos = s0;
            s0 = peg$c0;
          }
        } else {
          peg$currPos = s0;
          s0 = peg$c0;
        }
      } else {
        peg$currPos = s0;
        s0 = peg$c0;
      }

      return s0;
    }

    function peg$parseClassCharacter() {
      var s0, s1, s2;

      s0 = peg$currPos;
      s1 = peg$currPos;
      peg$silentFails++;
      if (input.charCodeAt(peg$currPos) === 93) {
        s2 = peg$c116;
        peg$currPos++;
      } else {
        s2 = peg$FAILED;
        if (peg$silentFails === 0) { peg$fail(peg$c117); }
      }
      if (s2 === peg$FAILED) {
        if (input.charCodeAt(peg$currPos) === 92) {
          s2 = peg$c107;
          peg$currPos++;
        } else {
          s2 = peg$FAILED;
          if (peg$silentFails === 0) { peg$fail(peg$c108); }
        }
        if (s2 === peg$FAILED) {
          s2 = peg$parseLineTerminator();
        }
      }
      peg$silentFails--;
      if (s2 === peg$FAILED) {
        s1 = peg$c38;
      } else {
        peg$currPos = s1;
        s1 = peg$c0;
      }
      if (s1 !== peg$FAILED) {
        s2 = peg$parseSourceCharacter();
        if (s2 !== peg$FAILED) {
          peg$reportedPos = s0;
          s1 = peg$c109();
          s0 = s1;
        } else {
          peg$currPos = s0;
          s0 = peg$c0;
        }
      } else {
        peg$currPos = s0;
        s0 = peg$c0;
      }
      if (s0 === peg$FAILED) {
        s0 = peg$currPos;
        if (input.charCodeAt(peg$currPos) === 92) {
          s1 = peg$c107;
          peg$currPos++;
        } else {
          s1 = peg$FAILED;
          if (peg$silentFails === 0) { peg$fail(peg$c108); }
        }
        if (s1 !== peg$FAILED) {
          s2 = peg$parseEscapeSequence();
          if (s2 !== peg$FAILED) {
            peg$reportedPos = s0;
            s1 = peg$c110(s2);
            s0 = s1;
          } else {
            peg$currPos = s0;
            s0 = peg$c0;
          }
        } else {
          peg$currPos = s0;
          s0 = peg$c0;
        }
        if (s0 === peg$FAILED) {
          s0 = peg$parseLineContinuation();
        }
      }

      return s0;
    }

    function peg$parseLineContinuation() {
      var s0, s1, s2;

      s0 = peg$currPos;
      if (input.charCodeAt(peg$currPos) === 92) {
        s1 = peg$c107;
        peg$currPos++;
      } else {
        s1 = peg$FAILED;
        if (peg$silentFails === 0) { peg$fail(peg$c108); }
      }
      if (s1 !== peg$FAILED) {
        s2 = peg$parseLineTerminatorSequence();
        if (s2 !== peg$FAILED) {
          peg$reportedPos = s0;
          s1 = peg$c122();
          s0 = s1;
        } else {
          peg$currPos = s0;
          s0 = peg$c0;
        }
      } else {
        peg$currPos = s0;
        s0 = peg$c0;
      }

      return s0;
    }

    function peg$parseEscapeSequence() {
      var s0, s1, s2, s3;

      s0 = peg$parseCharacterEscapeSequence();
      if (s0 === peg$FAILED) {
        s0 = peg$currPos;
        if (input.charCodeAt(peg$currPos) === 48) {
          s1 = peg$c123;
          peg$currPos++;
        } else {
          s1 = peg$FAILED;
          if (peg$silentFails === 0) { peg$fail(peg$c124); }
        }
        if (s1 !== peg$FAILED) {
          s2 = peg$currPos;
          peg$silentFails++;
          s3 = peg$parseDecimalDigit();
          peg$silentFails--;
          if (s3 === peg$FAILED) {
            s2 = peg$c38;
          } else {
            peg$currPos = s2;
            s2 = peg$c0;
          }
          if (s2 !== peg$FAILED) {
            peg$reportedPos = s0;
            s1 = peg$c125();
            s0 = s1;
          } else {
            peg$currPos = s0;
            s0 = peg$c0;
          }
        } else {
          peg$currPos = s0;
          s0 = peg$c0;
        }
        if (s0 === peg$FAILED) {
          s0 = peg$parseHexEscapeSequence();
          if (s0 === peg$FAILED) {
            s0 = peg$parseUnicodeEscapeSequence();
          }
        }
      }

      return s0;
    }

    function peg$parseCharacterEscapeSequence() {
      var s0;

      s0 = peg$parseSingleEscapeCharacter();
      if (s0 === peg$FAILED) {
        s0 = peg$parseNonEscapeCharacter();
      }

      return s0;
    }

    function peg$parseSingleEscapeCharacter() {
      var s0, s1;

      if (input.charCodeAt(peg$currPos) === 39) {
        s0 = peg$c105;
        peg$currPos++;
      } else {
        s0 = peg$FAILED;
        if (peg$silentFails === 0) { peg$fail(peg$c106); }
      }
      if (s0 === peg$FAILED) {
        if (input.charCodeAt(peg$currPos) === 34) {
          s0 = peg$c102;
          peg$currPos++;
        } else {
          s0 = peg$FAILED;
          if (peg$silentFails === 0) { peg$fail(peg$c103); }
        }
        if (s0 === peg$FAILED) {
          if (input.charCodeAt(peg$currPos) === 92) {
            s0 = peg$c107;
            peg$currPos++;
          } else {
            s0 = peg$FAILED;
            if (peg$silentFails === 0) { peg$fail(peg$c108); }
          }
          if (s0 === peg$FAILED) {
            s0 = peg$currPos;
            if (input.charCodeAt(peg$currPos) === 98) {
              s1 = peg$c126;
              peg$currPos++;
            } else {
              s1 = peg$FAILED;
              if (peg$silentFails === 0) { peg$fail(peg$c127); }
            }
            if (s1 !== peg$FAILED) {
              peg$reportedPos = s0;
              s1 = peg$c128();
            }
            s0 = s1;
            if (s0 === peg$FAILED) {
              s0 = peg$currPos;
              if (input.charCodeAt(peg$currPos) === 102) {
                s1 = peg$c129;
                peg$currPos++;
              } else {
                s1 = peg$FAILED;
                if (peg$silentFails === 0) { peg$fail(peg$c130); }
              }
              if (s1 !== peg$FAILED) {
                peg$reportedPos = s0;
                s1 = peg$c131();
              }
              s0 = s1;
              if (s0 === peg$FAILED) {
                s0 = peg$currPos;
                if (input.charCodeAt(peg$currPos) === 110) {
                  s1 = peg$c132;
                  peg$currPos++;
                } else {
                  s1 = peg$FAILED;
                  if (peg$silentFails === 0) { peg$fail(peg$c133); }
                }
                if (s1 !== peg$FAILED) {
                  peg$reportedPos = s0;
                  s1 = peg$c134();
                }
                s0 = s1;
                if (s0 === peg$FAILED) {
                  s0 = peg$currPos;
                  if (input.charCodeAt(peg$currPos) === 114) {
                    s1 = peg$c135;
                    peg$currPos++;
                  } else {
                    s1 = peg$FAILED;
                    if (peg$silentFails === 0) { peg$fail(peg$c136); }
                  }
                  if (s1 !== peg$FAILED) {
                    peg$reportedPos = s0;
                    s1 = peg$c137();
                  }
                  s0 = s1;
                  if (s0 === peg$FAILED) {
                    s0 = peg$currPos;
                    if (input.charCodeAt(peg$currPos) === 116) {
                      s1 = peg$c138;
                      peg$currPos++;
                    } else {
                      s1 = peg$FAILED;
                      if (peg$silentFails === 0) { peg$fail(peg$c139); }
                    }
                    if (s1 !== peg$FAILED) {
                      peg$reportedPos = s0;
                      s1 = peg$c140();
                    }
                    s0 = s1;
                    if (s0 === peg$FAILED) {
                      s0 = peg$currPos;
                      if (input.charCodeAt(peg$currPos) === 118) {
                        s1 = peg$c141;
                        peg$currPos++;
                      } else {
                        s1 = peg$FAILED;
                        if (peg$silentFails === 0) { peg$fail(peg$c142); }
                      }
                      if (s1 !== peg$FAILED) {
                        peg$reportedPos = s0;
                        s1 = peg$c143();
                      }
                      s0 = s1;
                    }
                  }
                }
              }
            }
          }
        }
      }

      return s0;
    }

    function peg$parseNonEscapeCharacter() {
      var s0, s1, s2;

      s0 = peg$currPos;
      s1 = peg$currPos;
      peg$silentFails++;
      s2 = peg$parseEscapeCharacter();
      if (s2 === peg$FAILED) {
        s2 = peg$parseLineTerminator();
      }
      peg$silentFails--;
      if (s2 === peg$FAILED) {
        s1 = peg$c38;
      } else {
        peg$currPos = s1;
        s1 = peg$c0;
      }
      if (s1 !== peg$FAILED) {
        s2 = peg$parseSourceCharacter();
        if (s2 !== peg$FAILED) {
          peg$reportedPos = s0;
          s1 = peg$c109();
          s0 = s1;
        } else {
          peg$currPos = s0;
          s0 = peg$c0;
        }
      } else {
        peg$currPos = s0;
        s0 = peg$c0;
      }

      return s0;
    }

    function peg$parseEscapeCharacter() {
      var s0;

      s0 = peg$parseSingleEscapeCharacter();
      if (s0 === peg$FAILED) {
        s0 = peg$parseDecimalDigit();
        if (s0 === peg$FAILED) {
          if (input.charCodeAt(peg$currPos) === 120) {
            s0 = peg$c144;
            peg$currPos++;
          } else {
            s0 = peg$FAILED;
            if (peg$silentFails === 0) { peg$fail(peg$c145); }
          }
          if (s0 === peg$FAILED) {
            if (input.charCodeAt(peg$currPos) === 117) {
              s0 = peg$c146;
              peg$currPos++;
            } else {
              s0 = peg$FAILED;
              if (peg$silentFails === 0) { peg$fail(peg$c147); }
            }
          }
        }
      }

      return s0;
    }

    function peg$parseHexEscapeSequence() {
      var s0, s1, s2, s3, s4, s5;

      s0 = peg$currPos;
      if (input.charCodeAt(peg$currPos) === 120) {
        s1 = peg$c144;
        peg$currPos++;
      } else {
        s1 = peg$FAILED;
        if (peg$silentFails === 0) { peg$fail(peg$c145); }
      }
      if (s1 !== peg$FAILED) {
        s2 = peg$currPos;
        s3 = peg$currPos;
        s4 = peg$parseHexDigit();
        if (s4 !== peg$FAILED) {
          s5 = peg$parseHexDigit();
          if (s5 !== peg$FAILED) {
            s4 = [s4, s5];
            s3 = s4;
          } else {
            peg$currPos = s3;
            s3 = peg$c0;
          }
        } else {
          peg$currPos = s3;
          s3 = peg$c0;
        }
        if (s3 !== peg$FAILED) {
          s3 = input.substring(s2, peg$currPos);
        }
        s2 = s3;
        if (s2 !== peg$FAILED) {
          peg$reportedPos = s0;
          s1 = peg$c148(s2);
          s0 = s1;
        } else {
          peg$currPos = s0;
          s0 = peg$c0;
        }
      } else {
        peg$currPos = s0;
        s0 = peg$c0;
      }

      return s0;
    }

    function peg$parseUnicodeEscapeSequence() {
      var s0, s1, s2, s3, s4, s5, s6, s7;

      s0 = peg$currPos;
      if (input.charCodeAt(peg$currPos) === 117) {
        s1 = peg$c146;
        peg$currPos++;
      } else {
        s1 = peg$FAILED;
        if (peg$silentFails === 0) { peg$fail(peg$c147); }
      }
      if (s1 !== peg$FAILED) {
        s2 = peg$currPos;
        s3 = peg$currPos;
        s4 = peg$parseHexDigit();
        if (s4 !== peg$FAILED) {
          s5 = peg$parseHexDigit();
          if (s5 !== peg$FAILED) {
            s6 = peg$parseHexDigit();
            if (s6 !== peg$FAILED) {
              s7 = peg$parseHexDigit();
              if (s7 !== peg$FAILED) {
                s4 = [s4, s5, s6, s7];
                s3 = s4;
              } else {
                peg$currPos = s3;
                s3 = peg$c0;
              }
            } else {
              peg$currPos = s3;
              s3 = peg$c0;
            }
          } else {
            peg$currPos = s3;
            s3 = peg$c0;
          }
        } else {
          peg$currPos = s3;
          s3 = peg$c0;
        }
        if (s3 !== peg$FAILED) {
          s3 = input.substring(s2, peg$currPos);
        }
        s2 = s3;
        if (s2 !== peg$FAILED) {
          peg$reportedPos = s0;
          s1 = peg$c148(s2);
          s0 = s1;
        } else {
          peg$currPos = s0;
          s0 = peg$c0;
        }
      } else {
        peg$currPos = s0;
        s0 = peg$c0;
      }

      return s0;
    }

    function peg$parseDecimalDigit() {
      var s0;

      if (peg$c149.test(input.charAt(peg$currPos))) {
        s0 = input.charAt(peg$currPos);
        peg$currPos++;
      } else {
        s0 = peg$FAILED;
        if (peg$silentFails === 0) { peg$fail(peg$c150); }
      }

      return s0;
    }

    function peg$parseHexDigit() {
      var s0;

      if (peg$c151.test(input.charAt(peg$currPos))) {
        s0 = input.charAt(peg$currPos);
        peg$currPos++;
      } else {
        s0 = peg$FAILED;
        if (peg$silentFails === 0) { peg$fail(peg$c152); }
      }

      return s0;
    }

    function peg$parseZs() {
      var s0;

      if (peg$c153.test(input.charAt(peg$currPos))) {
        s0 = input.charAt(peg$currPos);
        peg$currPos++;
      } else {
        s0 = peg$FAILED;
        if (peg$silentFails === 0) { peg$fail(peg$c154); }
      }

      return s0;
    }

    function peg$parse__() {
      var s0, s1;

      s0 = [];
      s1 = peg$parseWhiteSpace();
      if (s1 === peg$FAILED) {
        s1 = peg$parseLineTerminatorSequence();
        if (s1 === peg$FAILED) {
          s1 = peg$parseComment();
        }
      }
      while (s1 !== peg$FAILED) {
        s0.push(s1);
        s1 = peg$parseWhiteSpace();
        if (s1 === peg$FAILED) {
          s1 = peg$parseLineTerminatorSequence();
          if (s1 === peg$FAILED) {
            s1 = peg$parseComment();
          }
        }
      }

      return s0;
    }


      function extractOptional(optional, index) {
        return optional ? optional[index] : null;
      }

      function extractList(list, index) {
        var result = new Array(list.length), i;

        for (i = 0; i < list.length; i++) {
          result[i] = list[i][index];
        }

        return result;
      }

      function buildList(first, rest, index) {
        return [first].concat(extractList(rest, index));
      }


    peg$result = peg$startRuleFunction();

    if (peg$result !== peg$FAILED && peg$currPos === input.length) {
      return peg$result;
    } else {
      if (peg$result !== peg$FAILED && peg$currPos < input.length) {
        peg$fail({ type: "end", description: "end of input" });
      }

      throw peg$buildException(null, peg$maxFailExpected, peg$maxFailPos);
    }
  }

  return {
    SyntaxError: SyntaxError,
    parse:       parse
  };
})();