/*
 * Generated by PEG.js 0.10.0.
 *
 * http://pegjs.org/
 */
"use strict";

var _interopRequireDefault = require("@babel/runtime/helpers/interopRequireDefault");

var _defineProperty2 = _interopRequireDefault(require("@babel/runtime/helpers/defineProperty"));

function ownKeys(object, enumerableOnly) { var keys = Object.keys(object); if (Object.getOwnPropertySymbols) { var symbols = Object.getOwnPropertySymbols(object); if (enumerableOnly) symbols = symbols.filter(function (sym) { return Object.getOwnPropertyDescriptor(object, sym).enumerable; }); keys.push.apply(keys, symbols); } return keys; }

function _objectSpread(target) { for (var i = 1; i < arguments.length; i++) { var source = arguments[i] != null ? arguments[i] : {}; if (i % 2) { ownKeys(source, true).forEach(function (key) { (0, _defineProperty2.default)(target, key, source[key]); }); } else if (Object.getOwnPropertyDescriptors) { Object.defineProperties(target, Object.getOwnPropertyDescriptors(source)); } else { ownKeys(source).forEach(function (key) { Object.defineProperty(target, key, Object.getOwnPropertyDescriptor(source, key)); }); } } return target; }

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

  ctor.prototype = parent.prototype;
  child.prototype = new ctor();
}

function peg$SyntaxError(message, expected, found, location) {
  this.message = message;
  this.expected = expected;
  this.found = found;
  this.location = location;
  this.name = "SyntaxError";

  if (typeof Error.captureStackTrace === "function") {
    Error.captureStackTrace(this, peg$SyntaxError);
  }
}

peg$subclass(peg$SyntaxError, Error);

peg$SyntaxError.buildMessage = function (expected, found) {
  var DESCRIBE_EXPECTATION_FNS = {
    literal: function literal(expectation) {
      return "\"" + literalEscape(expectation.text) + "\"";
    },
    "class": function _class(expectation) {
      var escapedParts = "",
          i;

      for (i = 0; i < expectation.parts.length; i++) {
        escapedParts += expectation.parts[i] instanceof Array ? classEscape(expectation.parts[i][0]) + "-" + classEscape(expectation.parts[i][1]) : classEscape(expectation.parts[i]);
      }

      return "[" + (expectation.inverted ? "^" : "") + escapedParts + "]";
    },
    any: function any(expectation) {
      return "any character";
    },
    end: function end(expectation) {
      return "end of input";
    },
    other: function other(expectation) {
      return expectation.description;
    }
  };

  function hex(ch) {
    return ch.charCodeAt(0).toString(16).toUpperCase();
  }

  function literalEscape(s) {
    return s.replace(/\\/g, '\\\\').replace(/"/g, '\\"').replace(/\0/g, '\\0').replace(/\t/g, '\\t').replace(/\n/g, '\\n').replace(/\r/g, '\\r').replace(/[\x00-\x0F]/g, function (ch) {
      return '\\x0' + hex(ch);
    }).replace(/[\x10-\x1F\x7F-\x9F]/g, function (ch) {
      return '\\x' + hex(ch);
    });
  }

  function classEscape(s) {
    return s.replace(/\\/g, '\\\\').replace(/\]/g, '\\]').replace(/\^/g, '\\^').replace(/-/g, '\\-').replace(/\0/g, '\\0').replace(/\t/g, '\\t').replace(/\n/g, '\\n').replace(/\r/g, '\\r').replace(/[\x00-\x0F]/g, function (ch) {
      return '\\x0' + hex(ch);
    }).replace(/[\x10-\x1F\x7F-\x9F]/g, function (ch) {
      return '\\x' + hex(ch);
    });
  }

  function describeExpectation(expectation) {
    return DESCRIBE_EXPECTATION_FNS[expectation.type](expectation);
  }

  function describeExpected(expected) {
    var descriptions = new Array(expected.length),
        i,
        j;

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

    descriptions.sort();

    if (descriptions.length > 0) {
      for (i = 1, j = 1; i < descriptions.length; i++) {
        if (descriptions[i - 1] !== descriptions[i]) {
          descriptions[j] = descriptions[i];
          j++;
        }
      }

      descriptions.length = j;
    }

    switch (descriptions.length) {
      case 1:
        return descriptions[0];

      case 2:
        return descriptions[0] + " or " + descriptions[1];

      default:
        return descriptions.slice(0, -1).join(", ") + ", or " + descriptions[descriptions.length - 1];
    }
  }

  function describeFound(found) {
    return found ? "\"" + literalEscape(found) + "\"" : "end of input";
  }

  return "Expected " + describeExpected(expected) + " but " + describeFound(found) + " found.";
};

function peg$parse(input, options) {
  options = options !== void 0 ? options : {};

  var peg$FAILED = {},
      peg$startRuleFunctions = {
    expression: peg$parseexpression,
    argument: peg$parseargument
  },
      peg$startRuleFunction = peg$parseexpression,
      peg$c0 = "|",
      peg$c1 = peg$literalExpectation("|", false),
      peg$c2 = function peg$c2(first, fn) {
    return fn;
  },
      peg$c3 = function peg$c3(first, rest) {
    return addMeta({
      type: 'expression',
      chain: [first].concat(rest)
    }, text(), location());
  },
      peg$c4 = peg$otherExpectation("function"),
      peg$c5 = function peg$c5(name, arg_list) {
    return addMeta({
      type: 'function',
      function: name,
      arguments: arg_list
    }, text(), location());
  },
      peg$c6 = "=",
      peg$c7 = peg$literalExpectation("=", false),
      peg$c8 = function peg$c8(name, value) {
    return {
      name: name,
      value: value
    };
  },
      peg$c9 = function peg$c9(value) {
    return {
      name: '_',
      value: value
    };
  },
      peg$c10 = "$",
      peg$c11 = peg$literalExpectation("$", false),
      peg$c12 = "{",
      peg$c13 = peg$literalExpectation("{", false),
      peg$c14 = "}",
      peg$c15 = peg$literalExpectation("}", false),
      peg$c16 = function peg$c16(expression) {
    return expression;
  },
      peg$c17 = function peg$c17(value) {
    return addMeta(value, text(), location());
  },
      peg$c18 = function peg$c18(arg) {
    return arg;
  },
      peg$c19 = function peg$c19(args) {
    return args.reduce(function (accumulator, _ref) {
      var name = _ref.name,
          value = _ref.value;
      return _objectSpread({}, accumulator, (0, _defineProperty2.default)({}, name, (accumulator[name] || []).concat(value)));
    }, {});
  },
      peg$c20 = /^[a-zA-Z0-9_\-]/,
      peg$c21 = peg$classExpectation([["a", "z"], ["A", "Z"], ["0", "9"], "_", "-"], false, false),
      peg$c22 = function peg$c22(name) {
    return name.join('');
  },
      peg$c23 = peg$otherExpectation("literal"),
      peg$c24 = "\"",
      peg$c25 = peg$literalExpectation("\"", false),
      peg$c26 = function peg$c26(chars) {
    return chars.join('');
  },
      peg$c27 = "'",
      peg$c28 = peg$literalExpectation("'", false),
      peg$c29 = function peg$c29(string) {
    // this also matches nulls, booleans, and numbers
    var result = string.join(''); // Sort of hacky, but PEG doesn't have backtracking so
    // a null/boolean/number rule is hard to read, and performs worse

    if (result === 'null') return null;
    if (result === 'true') return true;
    if (result === 'false') return false;
    if (isNaN(Number(result))) return result; // 5bears

    return Number(result);
  },
      peg$c30 = /^[ \t\r\n]/,
      peg$c31 = peg$classExpectation([" ", "\t", "\r", "\n"], false, false),
      peg$c32 = "\\",
      peg$c33 = peg$literalExpectation("\\", false),
      peg$c34 = /^["'(){}<>[\]$`|= \t\n\r]/,
      peg$c35 = peg$classExpectation(["\"", "'", "(", ")", "{", "}", "<", ">", "[", "]", "$", "`", "|", "=", " ", "\t", "\n", "\r"], false, false),
      peg$c36 = function peg$c36(sequence) {
    return sequence;
  },
      peg$c37 = /^[^"'(){}<>[\]$`|= \t\n\r]/,
      peg$c38 = peg$classExpectation(["\"", "'", "(", ")", "{", "}", "<", ">", "[", "]", "$", "`", "|", "=", " ", "\t", "\n", "\r"], true, false),
      peg$c39 = /^[^"]/,
      peg$c40 = peg$classExpectation(["\""], true, false),
      peg$c41 = /^[^']/,
      peg$c42 = peg$classExpectation(["'"], true, false),
      peg$currPos = 0,
      peg$savedPos = 0,
      peg$posDetailsCache = [{
    line: 1,
    column: 1
  }],
      peg$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$savedPos, peg$currPos);
  }

  function location() {
    return peg$computeLocation(peg$savedPos, peg$currPos);
  }

  function expected(description, location) {
    location = location !== void 0 ? location : peg$computeLocation(peg$savedPos, peg$currPos);
    throw peg$buildStructuredError([peg$otherExpectation(description)], input.substring(peg$savedPos, peg$currPos), location);
  }

  function error(message, location) {
    location = location !== void 0 ? location : peg$computeLocation(peg$savedPos, peg$currPos);
    throw peg$buildSimpleError(message, location);
  }

  function peg$literalExpectation(text, ignoreCase) {
    return {
      type: "literal",
      text: text,
      ignoreCase: ignoreCase
    };
  }

  function peg$classExpectation(parts, inverted, ignoreCase) {
    return {
      type: "class",
      parts: parts,
      inverted: inverted,
      ignoreCase: ignoreCase
    };
  }

  function peg$anyExpectation() {
    return {
      type: "any"
    };
  }

  function peg$endExpectation() {
    return {
      type: "end"
    };
  }

  function peg$otherExpectation(description) {
    return {
      type: "other",
      description: description
    };
  }

  function peg$computePosDetails(pos) {
    var details = peg$posDetailsCache[pos],
        p;

    if (details) {
      return details;
    } else {
      p = pos - 1;

      while (!peg$posDetailsCache[p]) {
        p--;
      }

      details = peg$posDetailsCache[p];
      details = {
        line: details.line,
        column: details.column
      };

      while (p < pos) {
        if (input.charCodeAt(p) === 10) {
          details.line++;
          details.column = 1;
        } else {
          details.column++;
        }

        p++;
      }

      peg$posDetailsCache[pos] = details;
      return details;
    }
  }

  function peg$computeLocation(startPos, endPos) {
    var startPosDetails = peg$computePosDetails(startPos),
        endPosDetails = peg$computePosDetails(endPos);
    return {
      start: {
        offset: startPos,
        line: startPosDetails.line,
        column: startPosDetails.column
      },
      end: {
        offset: endPos,
        line: endPosDetails.line,
        column: endPosDetails.column
      }
    };
  }

  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$buildSimpleError(message, location) {
    return new peg$SyntaxError(message, null, null, location);
  }

  function peg$buildStructuredError(expected, found, location) {
    return new peg$SyntaxError(peg$SyntaxError.buildMessage(expected, found), expected, found, location);
  }

  function peg$parseexpression() {
    var s0, s1, s2, s3, s4, s5, s6, s7;
    s0 = peg$currPos;
    s1 = peg$parsespace();

    if (s1 === peg$FAILED) {
      s1 = null;
    }

    if (s1 !== peg$FAILED) {
      s2 = peg$parsefunction();

      if (s2 !== peg$FAILED) {
        s3 = [];
        s4 = peg$currPos;

        if (input.charCodeAt(peg$currPos) === 124) {
          s5 = peg$c0;
          peg$currPos++;
        } else {
          s5 = peg$FAILED;

          if (peg$silentFails === 0) {
            peg$fail(peg$c1);
          }
        }

        if (s5 !== peg$FAILED) {
          s6 = peg$parsespace();

          if (s6 === peg$FAILED) {
            s6 = null;
          }

          if (s6 !== peg$FAILED) {
            s7 = peg$parsefunction();

            if (s7 !== peg$FAILED) {
              peg$savedPos = s4;
              s5 = peg$c2(s2, s7);
              s4 = s5;
            } else {
              peg$currPos = s4;
              s4 = peg$FAILED;
            }
          } else {
            peg$currPos = s4;
            s4 = peg$FAILED;
          }
        } else {
          peg$currPos = s4;
          s4 = peg$FAILED;
        }

        while (s4 !== peg$FAILED) {
          s3.push(s4);
          s4 = peg$currPos;

          if (input.charCodeAt(peg$currPos) === 124) {
            s5 = peg$c0;
            peg$currPos++;
          } else {
            s5 = peg$FAILED;

            if (peg$silentFails === 0) {
              peg$fail(peg$c1);
            }
          }

          if (s5 !== peg$FAILED) {
            s6 = peg$parsespace();

            if (s6 === peg$FAILED) {
              s6 = null;
            }

            if (s6 !== peg$FAILED) {
              s7 = peg$parsefunction();

              if (s7 !== peg$FAILED) {
                peg$savedPos = s4;
                s5 = peg$c2(s2, s7);
                s4 = s5;
              } else {
                peg$currPos = s4;
                s4 = peg$FAILED;
              }
            } else {
              peg$currPos = s4;
              s4 = peg$FAILED;
            }
          } else {
            peg$currPos = s4;
            s4 = peg$FAILED;
          }
        }

        if (s3 !== peg$FAILED) {
          peg$savedPos = s0;
          s1 = peg$c3(s2, s3);
          s0 = s1;
        } else {
          peg$currPos = s0;
          s0 = peg$FAILED;
        }
      } else {
        peg$currPos = s0;
        s0 = peg$FAILED;
      }
    } else {
      peg$currPos = s0;
      s0 = peg$FAILED;
    }

    return s0;
  }

  function peg$parsefunction() {
    var s0, s1, s2;
    peg$silentFails++;
    s0 = peg$currPos;
    s1 = peg$parseidentifier();

    if (s1 !== peg$FAILED) {
      s2 = peg$parsearg_list();

      if (s2 !== peg$FAILED) {
        peg$savedPos = s0;
        s1 = peg$c5(s1, s2);
        s0 = s1;
      } else {
        peg$currPos = s0;
        s0 = peg$FAILED;
      }
    } else {
      peg$currPos = s0;
      s0 = peg$FAILED;
    }

    peg$silentFails--;

    if (s0 === peg$FAILED) {
      s1 = peg$FAILED;

      if (peg$silentFails === 0) {
        peg$fail(peg$c4);
      }
    }

    return s0;
  }

  function peg$parseargument_assignment() {
    var s0, s1, s2, s3, s4, s5;
    s0 = peg$currPos;
    s1 = peg$parseidentifier();

    if (s1 !== peg$FAILED) {
      s2 = peg$parsespace();

      if (s2 === peg$FAILED) {
        s2 = null;
      }

      if (s2 !== peg$FAILED) {
        if (input.charCodeAt(peg$currPos) === 61) {
          s3 = peg$c6;
          peg$currPos++;
        } else {
          s3 = peg$FAILED;

          if (peg$silentFails === 0) {
            peg$fail(peg$c7);
          }
        }

        if (s3 !== peg$FAILED) {
          s4 = peg$parsespace();

          if (s4 === peg$FAILED) {
            s4 = null;
          }

          if (s4 !== peg$FAILED) {
            s5 = peg$parseargument();

            if (s5 !== peg$FAILED) {
              peg$savedPos = s0;
              s1 = peg$c8(s1, s5);
              s0 = s1;
            } else {
              peg$currPos = s0;
              s0 = peg$FAILED;
            }
          } else {
            peg$currPos = s0;
            s0 = peg$FAILED;
          }
        } else {
          peg$currPos = s0;
          s0 = peg$FAILED;
        }
      } else {
        peg$currPos = s0;
        s0 = peg$FAILED;
      }
    } else {
      peg$currPos = s0;
      s0 = peg$FAILED;
    }

    if (s0 === peg$FAILED) {
      s0 = peg$currPos;
      s1 = peg$parseargument();

      if (s1 !== peg$FAILED) {
        peg$savedPos = s0;
        s1 = peg$c9(s1);
      }

      s0 = s1;
    }

    return s0;
  }

  function peg$parseargument() {
    var s0, s1, s2, s3, s4;
    s0 = peg$currPos;

    if (input.charCodeAt(peg$currPos) === 36) {
      s1 = peg$c10;
      peg$currPos++;
    } else {
      s1 = peg$FAILED;

      if (peg$silentFails === 0) {
        peg$fail(peg$c11);
      }
    }

    if (s1 === peg$FAILED) {
      s1 = null;
    }

    if (s1 !== peg$FAILED) {
      if (input.charCodeAt(peg$currPos) === 123) {
        s2 = peg$c12;
        peg$currPos++;
      } else {
        s2 = peg$FAILED;

        if (peg$silentFails === 0) {
          peg$fail(peg$c13);
        }
      }

      if (s2 !== peg$FAILED) {
        s3 = peg$parseexpression();

        if (s3 !== peg$FAILED) {
          if (input.charCodeAt(peg$currPos) === 125) {
            s4 = peg$c14;
            peg$currPos++;
          } else {
            s4 = peg$FAILED;

            if (peg$silentFails === 0) {
              peg$fail(peg$c15);
            }
          }

          if (s4 !== peg$FAILED) {
            peg$savedPos = s0;
            s1 = peg$c16(s3);
            s0 = s1;
          } else {
            peg$currPos = s0;
            s0 = peg$FAILED;
          }
        } else {
          peg$currPos = s0;
          s0 = peg$FAILED;
        }
      } else {
        peg$currPos = s0;
        s0 = peg$FAILED;
      }
    } else {
      peg$currPos = s0;
      s0 = peg$FAILED;
    }

    if (s0 === peg$FAILED) {
      s0 = peg$currPos;
      s1 = peg$parseliteral();

      if (s1 !== peg$FAILED) {
        peg$savedPos = s0;
        s1 = peg$c17(s1);
      }

      s0 = s1;
    }

    return s0;
  }

  function peg$parsearg_list() {
    var s0, s1, s2, s3, s4;
    s0 = peg$currPos;
    s1 = [];
    s2 = peg$currPos;
    s3 = peg$parsespace();

    if (s3 !== peg$FAILED) {
      s4 = peg$parseargument_assignment();

      if (s4 !== peg$FAILED) {
        peg$savedPos = s2;
        s3 = peg$c18(s4);
        s2 = s3;
      } else {
        peg$currPos = s2;
        s2 = peg$FAILED;
      }
    } else {
      peg$currPos = s2;
      s2 = peg$FAILED;
    }

    while (s2 !== peg$FAILED) {
      s1.push(s2);
      s2 = peg$currPos;
      s3 = peg$parsespace();

      if (s3 !== peg$FAILED) {
        s4 = peg$parseargument_assignment();

        if (s4 !== peg$FAILED) {
          peg$savedPos = s2;
          s3 = peg$c18(s4);
          s2 = s3;
        } else {
          peg$currPos = s2;
          s2 = peg$FAILED;
        }
      } else {
        peg$currPos = s2;
        s2 = peg$FAILED;
      }
    }

    if (s1 !== peg$FAILED) {
      s2 = peg$parsespace();

      if (s2 === peg$FAILED) {
        s2 = null;
      }

      if (s2 !== peg$FAILED) {
        peg$savedPos = s0;
        s1 = peg$c19(s1);
        s0 = s1;
      } else {
        peg$currPos = s0;
        s0 = peg$FAILED;
      }
    } else {
      peg$currPos = s0;
      s0 = peg$FAILED;
    }

    return s0;
  }

  function peg$parseidentifier() {
    var s0, s1, s2;
    s0 = peg$currPos;
    s1 = [];

    if (peg$c20.test(input.charAt(peg$currPos))) {
      s2 = input.charAt(peg$currPos);
      peg$currPos++;
    } else {
      s2 = peg$FAILED;

      if (peg$silentFails === 0) {
        peg$fail(peg$c21);
      }
    }

    if (s2 !== peg$FAILED) {
      while (s2 !== peg$FAILED) {
        s1.push(s2);

        if (peg$c20.test(input.charAt(peg$currPos))) {
          s2 = input.charAt(peg$currPos);
          peg$currPos++;
        } else {
          s2 = peg$FAILED;

          if (peg$silentFails === 0) {
            peg$fail(peg$c21);
          }
        }
      }
    } else {
      s1 = peg$FAILED;
    }

    if (s1 !== peg$FAILED) {
      peg$savedPos = s0;
      s1 = peg$c22(s1);
    }

    s0 = s1;
    return s0;
  }

  function peg$parseliteral() {
    var s0, s1;
    peg$silentFails++;
    s0 = peg$parsephrase();

    if (s0 === peg$FAILED) {
      s0 = peg$parseunquoted_string_or_number();
    }

    peg$silentFails--;

    if (s0 === peg$FAILED) {
      s1 = peg$FAILED;

      if (peg$silentFails === 0) {
        peg$fail(peg$c23);
      }
    }

    return s0;
  }

  function peg$parsephrase() {
    var s0, s1, s2, s3;
    s0 = peg$currPos;

    if (input.charCodeAt(peg$currPos) === 34) {
      s1 = peg$c24;
      peg$currPos++;
    } else {
      s1 = peg$FAILED;

      if (peg$silentFails === 0) {
        peg$fail(peg$c25);
      }
    }

    if (s1 !== peg$FAILED) {
      s2 = [];
      s3 = peg$parsedq_char();

      while (s3 !== peg$FAILED) {
        s2.push(s3);
        s3 = peg$parsedq_char();
      }

      if (s2 !== peg$FAILED) {
        if (input.charCodeAt(peg$currPos) === 34) {
          s3 = peg$c24;
          peg$currPos++;
        } else {
          s3 = peg$FAILED;

          if (peg$silentFails === 0) {
            peg$fail(peg$c25);
          }
        }

        if (s3 !== peg$FAILED) {
          peg$savedPos = s0;
          s1 = peg$c26(s2);
          s0 = s1;
        } else {
          peg$currPos = s0;
          s0 = peg$FAILED;
        }
      } else {
        peg$currPos = s0;
        s0 = peg$FAILED;
      }
    } else {
      peg$currPos = s0;
      s0 = peg$FAILED;
    }

    if (s0 === peg$FAILED) {
      s0 = peg$currPos;

      if (input.charCodeAt(peg$currPos) === 39) {
        s1 = peg$c27;
        peg$currPos++;
      } else {
        s1 = peg$FAILED;

        if (peg$silentFails === 0) {
          peg$fail(peg$c28);
        }
      }

      if (s1 !== peg$FAILED) {
        s2 = [];
        s3 = peg$parsesq_char();

        while (s3 !== peg$FAILED) {
          s2.push(s3);
          s3 = peg$parsesq_char();
        }

        if (s2 !== peg$FAILED) {
          if (input.charCodeAt(peg$currPos) === 39) {
            s3 = peg$c27;
            peg$currPos++;
          } else {
            s3 = peg$FAILED;

            if (peg$silentFails === 0) {
              peg$fail(peg$c28);
            }
          }

          if (s3 !== peg$FAILED) {
            peg$savedPos = s0;
            s1 = peg$c26(s2);
            s0 = s1;
          } else {
            peg$currPos = s0;
            s0 = peg$FAILED;
          }
        } else {
          peg$currPos = s0;
          s0 = peg$FAILED;
        }
      } else {
        peg$currPos = s0;
        s0 = peg$FAILED;
      }
    }

    return s0;
  }

  function peg$parseunquoted_string_or_number() {
    var s0, s1, s2;
    s0 = peg$currPos;
    s1 = [];
    s2 = peg$parseunquoted();

    if (s2 !== peg$FAILED) {
      while (s2 !== peg$FAILED) {
        s1.push(s2);
        s2 = peg$parseunquoted();
      }
    } else {
      s1 = peg$FAILED;
    }

    if (s1 !== peg$FAILED) {
      peg$savedPos = s0;
      s1 = peg$c29(s1);
    }

    s0 = s1;
    return s0;
  }

  function peg$parsespace() {
    var s0, s1;
    s0 = [];

    if (peg$c30.test(input.charAt(peg$currPos))) {
      s1 = input.charAt(peg$currPos);
      peg$currPos++;
    } else {
      s1 = peg$FAILED;

      if (peg$silentFails === 0) {
        peg$fail(peg$c31);
      }
    }

    if (s1 !== peg$FAILED) {
      while (s1 !== peg$FAILED) {
        s0.push(s1);

        if (peg$c30.test(input.charAt(peg$currPos))) {
          s1 = input.charAt(peg$currPos);
          peg$currPos++;
        } else {
          s1 = peg$FAILED;

          if (peg$silentFails === 0) {
            peg$fail(peg$c31);
          }
        }
      }
    } else {
      s0 = peg$FAILED;
    }

    return s0;
  }

  function peg$parseunquoted() {
    var s0, s1, s2;
    s0 = peg$currPos;

    if (input.charCodeAt(peg$currPos) === 92) {
      s1 = peg$c32;
      peg$currPos++;
    } else {
      s1 = peg$FAILED;

      if (peg$silentFails === 0) {
        peg$fail(peg$c33);
      }
    }

    if (s1 !== peg$FAILED) {
      if (peg$c34.test(input.charAt(peg$currPos))) {
        s2 = input.charAt(peg$currPos);
        peg$currPos++;
      } else {
        s2 = peg$FAILED;

        if (peg$silentFails === 0) {
          peg$fail(peg$c35);
        }
      }

      if (s2 === peg$FAILED) {
        if (input.charCodeAt(peg$currPos) === 92) {
          s2 = peg$c32;
          peg$currPos++;
        } else {
          s2 = peg$FAILED;

          if (peg$silentFails === 0) {
            peg$fail(peg$c33);
          }
        }
      }

      if (s2 !== peg$FAILED) {
        peg$savedPos = s0;
        s1 = peg$c36(s2);
        s0 = s1;
      } else {
        peg$currPos = s0;
        s0 = peg$FAILED;
      }
    } else {
      peg$currPos = s0;
      s0 = peg$FAILED;
    }

    if (s0 === peg$FAILED) {
      if (peg$c37.test(input.charAt(peg$currPos))) {
        s0 = input.charAt(peg$currPos);
        peg$currPos++;
      } else {
        s0 = peg$FAILED;

        if (peg$silentFails === 0) {
          peg$fail(peg$c38);
        }
      }
    }

    return s0;
  }

  function peg$parsedq_char() {
    var s0, s1, s2;
    s0 = peg$currPos;

    if (input.charCodeAt(peg$currPos) === 92) {
      s1 = peg$c32;
      peg$currPos++;
    } else {
      s1 = peg$FAILED;

      if (peg$silentFails === 0) {
        peg$fail(peg$c33);
      }
    }

    if (s1 !== peg$FAILED) {
      if (input.charCodeAt(peg$currPos) === 34) {
        s2 = peg$c24;
        peg$currPos++;
      } else {
        s2 = peg$FAILED;

        if (peg$silentFails === 0) {
          peg$fail(peg$c25);
        }
      }

      if (s2 === peg$FAILED) {
        if (input.charCodeAt(peg$currPos) === 92) {
          s2 = peg$c32;
          peg$currPos++;
        } else {
          s2 = peg$FAILED;

          if (peg$silentFails === 0) {
            peg$fail(peg$c33);
          }
        }
      }

      if (s2 !== peg$FAILED) {
        peg$savedPos = s0;
        s1 = peg$c36(s2);
        s0 = s1;
      } else {
        peg$currPos = s0;
        s0 = peg$FAILED;
      }
    } else {
      peg$currPos = s0;
      s0 = peg$FAILED;
    }

    if (s0 === peg$FAILED) {
      if (peg$c39.test(input.charAt(peg$currPos))) {
        s0 = input.charAt(peg$currPos);
        peg$currPos++;
      } else {
        s0 = peg$FAILED;

        if (peg$silentFails === 0) {
          peg$fail(peg$c40);
        }
      }
    }

    return s0;
  }

  function peg$parsesq_char() {
    var s0, s1, s2;
    s0 = peg$currPos;

    if (input.charCodeAt(peg$currPos) === 92) {
      s1 = peg$c32;
      peg$currPos++;
    } else {
      s1 = peg$FAILED;

      if (peg$silentFails === 0) {
        peg$fail(peg$c33);
      }
    }

    if (s1 !== peg$FAILED) {
      if (input.charCodeAt(peg$currPos) === 39) {
        s2 = peg$c27;
        peg$currPos++;
      } else {
        s2 = peg$FAILED;

        if (peg$silentFails === 0) {
          peg$fail(peg$c28);
        }
      }

      if (s2 === peg$FAILED) {
        if (input.charCodeAt(peg$currPos) === 92) {
          s2 = peg$c32;
          peg$currPos++;
        } else {
          s2 = peg$FAILED;

          if (peg$silentFails === 0) {
            peg$fail(peg$c33);
          }
        }
      }

      if (s2 !== peg$FAILED) {
        peg$savedPos = s0;
        s1 = peg$c36(s2);
        s0 = s1;
      } else {
        peg$currPos = s0;
        s0 = peg$FAILED;
      }
    } else {
      peg$currPos = s0;
      s0 = peg$FAILED;
    }

    if (s0 === peg$FAILED) {
      if (peg$c41.test(input.charAt(peg$currPos))) {
        s0 = input.charAt(peg$currPos);
        peg$currPos++;
      } else {
        s0 = peg$FAILED;

        if (peg$silentFails === 0) {
          peg$fail(peg$c42);
        }
      }
    }

    return s0;
  }

  function addMeta(node, text, _ref2) {
    var start = _ref2.start.offset,
        end = _ref2.end.offset;
    if (!options.addMeta) return node;
    return {
      node: node,
      text: text,
      start: start,
      end: end
    };
  }

  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(peg$endExpectation());
    }

    throw peg$buildStructuredError(peg$maxFailExpected, peg$maxFailPos < input.length ? input.charAt(peg$maxFailPos) : null, peg$maxFailPos < input.length ? peg$computeLocation(peg$maxFailPos, peg$maxFailPos + 1) : peg$computeLocation(peg$maxFailPos, peg$maxFailPos));
  }
}

module.exports = {
  SyntaxError: peg$SyntaxError,
  parse: peg$parse
};