// tslint:disable:only-arrow-functions
// tslint:disable:object-literal-shorthand
// tslint:disable:trailing-comma
// tslint:disable:object-literal-sort-keys
// tslint:disable:one-variable-per-declaration
// tslint:disable:max-line-length
// tslint:disable:no-consecutive-blank-lines
// tslint:disable:align


// Generated by PEG.js v. 0.10.0 (ts-pegjs plugin v. 0.2.5 )
//
// https://pegjs.org/   https://github.com/metadevpro/ts-pegjs


import { 
    MessageFormatElement, 
    LiteralElement, 
    ArgumentElement, 
    NumberElement, 
    DateElement, 
    TimeElement, 
    SelectElement, 
    PluralElement,
    PluralOrSelectOption,
    TYPE
} from './types'
export interface IFilePosition {
  offset: number;
  line: number;
  column: number;
}

export interface IFileRange {
  start: IFilePosition;
  end: IFilePosition;
}

export interface ILiteralExpectation {
  type: "literal";
  text: string;
  ignoreCase: boolean;
}

export interface IClassParts extends Array<string | IClassParts> {}

export interface IClassExpectation {
  type: "class";
  parts: IClassParts;
  inverted: boolean;
  ignoreCase: boolean;
}

export interface IAnyExpectation {
  type: "any";
}

export interface IEndExpectation {
  type: "end";
}

export interface IOtherExpectation {
  type: "other";
  description: string;
}

export type Expectation = ILiteralExpectation | IClassExpectation | IAnyExpectation | IEndExpectation | IOtherExpectation;

export class SyntaxError extends Error {
  public static buildMessage(expected: Expectation[], found: string | null) {
    function hex(ch: string): string {
      return ch.charCodeAt(0).toString(16).toUpperCase();
    }

    function literalEscape(s: string): string {
      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,            (ch) => "\\x0" + hex(ch) )
        .replace(/[\x10-\x1F\x7F-\x9F]/g, (ch) => "\\x"  + hex(ch) );
    }

    function classEscape(s: string): string {
      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,            (ch) => "\\x0" + hex(ch) )
        .replace(/[\x10-\x1F\x7F-\x9F]/g, (ch) => "\\x"  + hex(ch) );
    }

    function describeExpectation(expectation: Expectation) {
      switch (expectation.type) {
        case "literal":
          return "\"" + literalEscape(expectation.text) + "\"";
        case "class":
          const escapedParts = expectation.parts.map((part) => {
            return Array.isArray(part)
              ? classEscape(part[0] as string) + "-" + classEscape(part[1] as string)
              : classEscape(part);
          });

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

    function describeExpected(expected1: Expectation[]) {
      const descriptions = expected1.map(describeExpectation);
      let i;
      let j;

      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(found1: string | null) {
      return found1 ? "\"" + literalEscape(found1) + "\"" : "end of input";
    }

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

  public message: string;
  public expected: Expectation[];
  public found: string | null;
  public location: IFileRange;
  public name: string;

  constructor(message: string, expected: Expectation[], found: string | null, location: IFileRange) {
    super();
    this.message = message;
    this.expected = expected;
    this.found = found;
    this.location = location;
    this.name = "SyntaxError";

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

function peg$parse(input: string, options?: IParseOptions) {
  options = options !== undefined ? options : {};

  const peg$FAILED: any = {};

  const peg$startRuleFunctions: {[id: string]: any} = { start: peg$parsestart };
  let peg$startRuleFunction: () => any = peg$parsestart;

  const peg$c0 = function(chunks: any): any {
          return chunks.reduce(function (all, chunk) {
              return all.concat(chunk)
          }, []).join('')
      };
  const peg$c1 = function(messageText: any): any {
          return {
              type : TYPE.literal,
              value: messageText,
              ...insertLocation()
          };
      };
  const peg$c2 = function(chars: any): any { return chars.join(''); };
  const peg$c3 = peg$otherExpectation("argumentElement");
  const peg$c4 = "{";
  const peg$c5 = peg$literalExpectation("{", false);
  const peg$c6 = "}";
  const peg$c7 = peg$literalExpectation("}", false);
  const peg$c8 = function(value: any): any {
          return {
              type: TYPE.argument,
              value,
              ...insertLocation()
          }
      };
  const peg$c9 = ",";
  const peg$c10 = peg$literalExpectation(",", false);
  const peg$c11 = "number";
  const peg$c12 = peg$literalExpectation("number", false);
  const peg$c13 = "date";
  const peg$c14 = peg$literalExpectation("date", false);
  const peg$c15 = "time";
  const peg$c16 = peg$literalExpectation("time", false);
  const peg$c17 = function(value: any, type: any, style: any): any {
          return {
              type    : type === 'number' ? TYPE.number : type === 'date' ? TYPE.date : TYPE.time,
              style   : style && style[2],
              value,
              ...insertLocation()
          };
      };
  const peg$c18 = "plural";
  const peg$c19 = peg$literalExpectation("plural", false);
  const peg$c20 = "selectordinal";
  const peg$c21 = peg$literalExpectation("selectordinal", false);
  const peg$c22 = "offset:";
  const peg$c23 = peg$literalExpectation("offset:", false);
  const peg$c24 = function(value: any, pluralType: any, offset: any, options: any): any {
          return {
              type   : TYPE.plural,
              pluralType: pluralType === 'plural' ? 'cardinal' : 'ordinal',
              value,
              offset : offset ? offset[2] : 0,
              options: options.reduce((all, {id, value, location}) => {
                  all[id] = {
                      value,
                      location
                  }
                  return all
              }, {}),
              ...insertLocation()
          };
      };
  const peg$c25 = "select";
  const peg$c26 = peg$literalExpectation("select", false);
  const peg$c27 = function(value: any, options: any): any {
          return {
              type   : TYPE.select,
              value,
              options: options.reduce((all, {id, value, location}) => {
                  all[id] = {
                      value,
                      location
                  }
                  return all
              }, {}),
              ...insertLocation()
          };
      };
  const peg$c28 = "=0";
  const peg$c29 = peg$literalExpectation("=0", false);
  const peg$c30 = "=1";
  const peg$c31 = peg$literalExpectation("=1", false);
  const peg$c32 = "=2";
  const peg$c33 = peg$literalExpectation("=2", false);
  const peg$c34 = "zero";
  const peg$c35 = peg$literalExpectation("zero", false);
  const peg$c36 = "one";
  const peg$c37 = peg$literalExpectation("one", false);
  const peg$c38 = "two";
  const peg$c39 = peg$literalExpectation("two", false);
  const peg$c40 = "few";
  const peg$c41 = peg$literalExpectation("few", false);
  const peg$c42 = "many";
  const peg$c43 = peg$literalExpectation("many", false);
  const peg$c44 = "other";
  const peg$c45 = peg$literalExpectation("other", false);
  const peg$c46 = function(id: any, value: any): any {
          return {
              id,
              value,
              ...insertLocation()
          }
      };
  const peg$c47 = function(id: any, value: any): any {
          return {
              id,
              value,
              ...insertLocation()
          };
      };
  const peg$c48 = peg$otherExpectation("whitespace");
  const peg$c49 = /^[ \t\n\r]/;
  const peg$c50 = peg$classExpectation([" ", "\t", "\n", "\r"], false, false);
  const peg$c51 = peg$otherExpectation("optionalWhitespace");
  const peg$c52 = /^[0-9]/;
  const peg$c53 = peg$classExpectation([["0", "9"]], false, false);
  const peg$c54 = /^[0-9a-f]/i;
  const peg$c55 = peg$classExpectation([["0", "9"], ["a", "f"]], false, true);
  const peg$c56 = function(digits: any): any {
      return parseInt(digits.join(''), 10);
  };
  const peg$c57 = "'";
  const peg$c58 = peg$literalExpectation("'", false);
  const peg$c59 = /^[ \t\n\r,.+={}#]/;
  const peg$c60 = peg$classExpectation([" ", "\t", "\n", "\r", ",", ".", "+", "=", "{", "}", "#"], false, false);
  const peg$c61 = peg$anyExpectation();
  const peg$c62 = function(char: any): any { return char; };
  const peg$c63 = function(sequence: any): any { return sequence; };
  const peg$c64 = peg$otherExpectation("apostrophe");
  const peg$c65 = /^[^{}\\\0-\x1F\x7F \t\n\r]/;
  const peg$c66 = peg$classExpectation(["{", "}", "\\", ["\0", "\x1F"], "\x7F", " ", "\t", "\n", "\r"], true, false);
  const peg$c67 = "\\\\";
  const peg$c68 = peg$literalExpectation("\\\\", false);
  const peg$c69 = function(): any { return '\\'; };
  const peg$c70 = "\\#";
  const peg$c71 = peg$literalExpectation("\\#", false);
  const peg$c72 = function(): any { return '\\#'; };
  const peg$c73 = "\\{";
  const peg$c74 = peg$literalExpectation("\\{", false);
  const peg$c75 = function(): any { return '\u007B'; };
  const peg$c76 = "\\}";
  const peg$c77 = peg$literalExpectation("\\}", false);
  const peg$c78 = function(): any { return '\u007D'; };
  const peg$c79 = "\\u";
  const peg$c80 = peg$literalExpectation("\\u", false);
  const peg$c81 = function(digits: any): any {
          return String.fromCharCode(parseInt(digits, 16));
      };

  let peg$currPos = 0;
  let peg$savedPos = 0;
  const peg$posDetailsCache = [{ line: 1, column: 1 }];
  let peg$maxFailPos = 0;
  let peg$maxFailExpected: any[] = [];
  let peg$silentFails = 0;

  let peg$result;

  if (options.startRule !== undefined) {
    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(): string {
    return input.substring(peg$savedPos, peg$currPos);
  }

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

  function expected(description: string, location1?: IFileRange) {
    location1 = location1 !== undefined
      ? location1
      : peg$computeLocation(peg$savedPos, peg$currPos);

    throw peg$buildStructuredError(
      [peg$otherExpectation(description)],
      input.substring(peg$savedPos, peg$currPos),
      location1
    );
  }

  function error(message: string, location1?: IFileRange) {
    location1 = location1 !== undefined
      ? location1
      : peg$computeLocation(peg$savedPos, peg$currPos);

    throw peg$buildSimpleError(message, location1);
  }

  function peg$literalExpectation(text1: string, ignoreCase: boolean): ILiteralExpectation {
    return { type: "literal", text: text1, ignoreCase: ignoreCase };
  }

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

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

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

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

  function peg$computePosDetails(pos: number) {
    let details = peg$posDetailsCache[pos];
    let 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$computeLocation(startPos: number, endPos: number): IFileRange {
    const startPosDetails = peg$computePosDetails(startPos);
    const 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$fail(expected1: Expectation) {
    if (peg$currPos < peg$maxFailPos) { return; }

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

    peg$maxFailExpected.push(expected1);
  }

  function peg$buildSimpleError(message: string, location1: IFileRange) {
    return new SyntaxError(message, [], "", location1);
  }

  function peg$buildStructuredError(expected1: Expectation[], found: string | null, location1: IFileRange) {
    return new SyntaxError(
      SyntaxError.buildMessage(expected1, found),
      expected1,
      found,
      location1
    );
  }

  function peg$parsestart(): MessageFormatElement[] {
    let s0;

    s0 = peg$parsemessage();

    return s0;
  }

  function peg$parsemessage(): MessageFormatElement[] {
    let s0, s1;

    s0 = [];
    s1 = peg$parsemessageElement();
    while (s1 !== peg$FAILED) {
      s0.push(s1);
      s1 = peg$parsemessageElement();
    }

    return s0;
  }

  function peg$parsemessageElement(): any {
    let s0;

    s0 = peg$parseliteralElement();
    if (s0 === peg$FAILED) {
      s0 = peg$parseargumentElement();
      if (s0 === peg$FAILED) {
        s0 = peg$parsesimpleFormatElement();
        if (s0 === peg$FAILED) {
          s0 = peg$parsepluralElement();
          if (s0 === peg$FAILED) {
            s0 = peg$parseselectElement();
          }
        }
      }
    }

    return s0;
  }

  function peg$parsemessageText(): any {
    let s0, s1, s2, s3, s4, s5;

    s0 = peg$currPos;
    s1 = [];
    s2 = peg$currPos;
    s3 = peg$parse_();
    if (s3 !== peg$FAILED) {
      s4 = peg$parsechars();
      if (s4 !== peg$FAILED) {
        s5 = peg$parse_();
        if (s5 !== peg$FAILED) {
          s3 = [s3, s4, s5];
          s2 = s3;
        } else {
          peg$currPos = s2;
          s2 = peg$FAILED;
        }
      } else {
        peg$currPos = s2;
        s2 = peg$FAILED;
      }
    } else {
      peg$currPos = s2;
      s2 = peg$FAILED;
    }
    if (s2 !== peg$FAILED) {
      while (s2 !== peg$FAILED) {
        s1.push(s2);
        s2 = peg$currPos;
        s3 = peg$parse_();
        if (s3 !== peg$FAILED) {
          s4 = peg$parsechars();
          if (s4 !== peg$FAILED) {
            s5 = peg$parse_();
            if (s5 !== peg$FAILED) {
              s3 = [s3, s4, s5];
              s2 = s3;
            } else {
              peg$currPos = s2;
              s2 = peg$FAILED;
            }
          } else {
            peg$currPos = s2;
            s2 = peg$FAILED;
          }
        } else {
          peg$currPos = s2;
          s2 = peg$FAILED;
        }
      }
    } else {
      s1 = peg$FAILED;
    }
    if (s1 !== peg$FAILED) {
      peg$savedPos = s0;
      s1 = peg$c0(s1);
    }
    s0 = s1;
    if (s0 === peg$FAILED) {
      s0 = peg$currPos;
      s1 = peg$parsews();
      if (s1 !== peg$FAILED) {
        s0 = input.substring(s0, peg$currPos);
      } else {
        s0 = s1;
      }
    }

    return s0;
  }

  function peg$parseliteralElement(): LiteralElement {
    let s0, s1;

    s0 = peg$currPos;
    s1 = peg$parsemessageText();
    if (s1 !== peg$FAILED) {
      peg$savedPos = s0;
      s1 = peg$c1(s1);
    }
    s0 = s1;

    return s0;
  }

  function peg$parsevarName(): string {
    let s0, s1, s2;

    s0 = peg$parsenumber();
    if (s0 === peg$FAILED) {
      s0 = peg$currPos;
      s1 = [];
      s2 = peg$parsequoteEscapedChar();
      while (s2 !== peg$FAILED) {
        s1.push(s2);
        s2 = peg$parsequoteEscapedChar();
      }
      if (s1 !== peg$FAILED) {
        peg$savedPos = s0;
        s1 = peg$c2(s1);
      }
      s0 = s1;
    }

    return s0;
  }

  function peg$parseargumentElement(): ArgumentElement {
    let s0, s1, s2, s3, s4, s5;

    peg$silentFails++;
    s0 = peg$currPos;
    if (input.charCodeAt(peg$currPos) === 123) {
      s1 = peg$c4;
      peg$currPos++;
    } else {
      s1 = peg$FAILED;
      if (peg$silentFails === 0) { peg$fail(peg$c5); }
    }
    if (s1 !== peg$FAILED) {
      s2 = peg$parse_();
      if (s2 !== peg$FAILED) {
        s3 = peg$parsevarName();
        if (s3 !== peg$FAILED) {
          s4 = peg$parse_();
          if (s4 !== peg$FAILED) {
            if (input.charCodeAt(peg$currPos) === 125) {
              s5 = peg$c6;
              peg$currPos++;
            } else {
              s5 = peg$FAILED;
              if (peg$silentFails === 0) { peg$fail(peg$c7); }
            }
            if (s5 !== peg$FAILED) {
              peg$savedPos = s0;
              s1 = peg$c8(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;
      }
    } else {
      peg$currPos = s0;
      s0 = peg$FAILED;
    }
    peg$silentFails--;
    if (s0 === peg$FAILED) {
      s1 = peg$FAILED;
      if (peg$silentFails === 0) { peg$fail(peg$c3); }
    }

    return s0;
  }

  function peg$parsesimpleFormatElement(): 
  | NumberElement 
  | DateElement 
  | TimeElement 
   {
    let s0, s1, s2, s3, s4, s5, s6, s7, s8, s9, s10, s11, s12;

    s0 = peg$currPos;
    if (input.charCodeAt(peg$currPos) === 123) {
      s1 = peg$c4;
      peg$currPos++;
    } else {
      s1 = peg$FAILED;
      if (peg$silentFails === 0) { peg$fail(peg$c5); }
    }
    if (s1 !== peg$FAILED) {
      s2 = peg$parse_();
      if (s2 !== peg$FAILED) {
        s3 = peg$parsevarName();
        if (s3 !== peg$FAILED) {
          s4 = peg$parse_();
          if (s4 !== peg$FAILED) {
            if (input.charCodeAt(peg$currPos) === 44) {
              s5 = peg$c9;
              peg$currPos++;
            } else {
              s5 = peg$FAILED;
              if (peg$silentFails === 0) { peg$fail(peg$c10); }
            }
            if (s5 !== peg$FAILED) {
              s6 = peg$parse_();
              if (s6 !== peg$FAILED) {
                if (input.substr(peg$currPos, 6) === peg$c11) {
                  s7 = peg$c11;
                  peg$currPos += 6;
                } else {
                  s7 = peg$FAILED;
                  if (peg$silentFails === 0) { peg$fail(peg$c12); }
                }
                if (s7 === peg$FAILED) {
                  if (input.substr(peg$currPos, 4) === peg$c13) {
                    s7 = peg$c13;
                    peg$currPos += 4;
                  } else {
                    s7 = peg$FAILED;
                    if (peg$silentFails === 0) { peg$fail(peg$c14); }
                  }
                  if (s7 === peg$FAILED) {
                    if (input.substr(peg$currPos, 4) === peg$c15) {
                      s7 = peg$c15;
                      peg$currPos += 4;
                    } else {
                      s7 = peg$FAILED;
                      if (peg$silentFails === 0) { peg$fail(peg$c16); }
                    }
                  }
                }
                if (s7 !== peg$FAILED) {
                  s8 = peg$parse_();
                  if (s8 !== peg$FAILED) {
                    s9 = peg$currPos;
                    if (input.charCodeAt(peg$currPos) === 44) {
                      s10 = peg$c9;
                      peg$currPos++;
                    } else {
                      s10 = peg$FAILED;
                      if (peg$silentFails === 0) { peg$fail(peg$c10); }
                    }
                    if (s10 !== peg$FAILED) {
                      s11 = peg$parse_();
                      if (s11 !== peg$FAILED) {
                        s12 = peg$parsechars();
                        if (s12 !== peg$FAILED) {
                          s10 = [s10, s11, s12];
                          s9 = s10;
                        } else {
                          peg$currPos = s9;
                          s9 = peg$FAILED;
                        }
                      } else {
                        peg$currPos = s9;
                        s9 = peg$FAILED;
                      }
                    } else {
                      peg$currPos = s9;
                      s9 = peg$FAILED;
                    }
                    if (s9 === peg$FAILED) {
                      s9 = null;
                    }
                    if (s9 !== peg$FAILED) {
                      s10 = peg$parse_();
                      if (s10 !== peg$FAILED) {
                        if (input.charCodeAt(peg$currPos) === 125) {
                          s11 = peg$c6;
                          peg$currPos++;
                        } else {
                          s11 = peg$FAILED;
                          if (peg$silentFails === 0) { peg$fail(peg$c7); }
                        }
                        if (s11 !== peg$FAILED) {
                          peg$savedPos = s0;
                          s1 = peg$c17(s3, s7, s9);
                          s0 = s1;
                        } else {
                          peg$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$FAILED;
                }
              } else {
                peg$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$FAILED;
      }
    } else {
      peg$currPos = s0;
      s0 = peg$FAILED;
    }

    return s0;
  }

  function peg$parsepluralElement(): PluralElement {
    let s0, s1, s2, s3, s4, s5, s6, s7, s8, s9, s10, s11, s12, s13, s14, s15;

    s0 = peg$currPos;
    if (input.charCodeAt(peg$currPos) === 123) {
      s1 = peg$c4;
      peg$currPos++;
    } else {
      s1 = peg$FAILED;
      if (peg$silentFails === 0) { peg$fail(peg$c5); }
    }
    if (s1 !== peg$FAILED) {
      s2 = peg$parse_();
      if (s2 !== peg$FAILED) {
        s3 = peg$parsevarName();
        if (s3 !== peg$FAILED) {
          s4 = peg$parse_();
          if (s4 !== peg$FAILED) {
            if (input.charCodeAt(peg$currPos) === 44) {
              s5 = peg$c9;
              peg$currPos++;
            } else {
              s5 = peg$FAILED;
              if (peg$silentFails === 0) { peg$fail(peg$c10); }
            }
            if (s5 !== peg$FAILED) {
              s6 = peg$parse_();
              if (s6 !== peg$FAILED) {
                if (input.substr(peg$currPos, 6) === peg$c18) {
                  s7 = peg$c18;
                  peg$currPos += 6;
                } else {
                  s7 = peg$FAILED;
                  if (peg$silentFails === 0) { peg$fail(peg$c19); }
                }
                if (s7 === peg$FAILED) {
                  if (input.substr(peg$currPos, 13) === peg$c20) {
                    s7 = peg$c20;
                    peg$currPos += 13;
                  } else {
                    s7 = peg$FAILED;
                    if (peg$silentFails === 0) { peg$fail(peg$c21); }
                  }
                }
                if (s7 !== peg$FAILED) {
                  s8 = peg$parse_();
                  if (s8 !== peg$FAILED) {
                    if (input.charCodeAt(peg$currPos) === 44) {
                      s9 = peg$c9;
                      peg$currPos++;
                    } else {
                      s9 = peg$FAILED;
                      if (peg$silentFails === 0) { peg$fail(peg$c10); }
                    }
                    if (s9 !== peg$FAILED) {
                      s10 = peg$parse_();
                      if (s10 !== peg$FAILED) {
                        s11 = peg$currPos;
                        if (input.substr(peg$currPos, 7) === peg$c22) {
                          s12 = peg$c22;
                          peg$currPos += 7;
                        } else {
                          s12 = peg$FAILED;
                          if (peg$silentFails === 0) { peg$fail(peg$c23); }
                        }
                        if (s12 !== peg$FAILED) {
                          s13 = peg$parse_();
                          if (s13 !== peg$FAILED) {
                            s14 = peg$parsenumber();
                            if (s14 !== peg$FAILED) {
                              s12 = [s12, s13, s14];
                              s11 = s12;
                            } else {
                              peg$currPos = s11;
                              s11 = peg$FAILED;
                            }
                          } else {
                            peg$currPos = s11;
                            s11 = peg$FAILED;
                          }
                        } else {
                          peg$currPos = s11;
                          s11 = peg$FAILED;
                        }
                        if (s11 === peg$FAILED) {
                          s11 = null;
                        }
                        if (s11 !== peg$FAILED) {
                          s12 = peg$parse_();
                          if (s12 !== peg$FAILED) {
                            s13 = [];
                            s14 = peg$parsepluralOption();
                            if (s14 !== peg$FAILED) {
                              while (s14 !== peg$FAILED) {
                                s13.push(s14);
                                s14 = peg$parsepluralOption();
                              }
                            } else {
                              s13 = peg$FAILED;
                            }
                            if (s13 !== peg$FAILED) {
                              s14 = peg$parse_();
                              if (s14 !== peg$FAILED) {
                                if (input.charCodeAt(peg$currPos) === 125) {
                                  s15 = peg$c6;
                                  peg$currPos++;
                                } else {
                                  s15 = peg$FAILED;
                                  if (peg$silentFails === 0) { peg$fail(peg$c7); }
                                }
                                if (s15 !== peg$FAILED) {
                                  peg$savedPos = s0;
                                  s1 = peg$c24(s3, s7, s11, s13);
                                  s0 = s1;
                                } else {
                                  peg$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$FAILED;
                        }
                      } else {
                        peg$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$FAILED;
              }
            } else {
              peg$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;
    }

    return s0;
  }

  function peg$parseselectElement(): SelectElement {
    let s0, s1, s2, s3, s4, s5, s6, s7, s8, s9, s10, s11, s12, s13;

    s0 = peg$currPos;
    if (input.charCodeAt(peg$currPos) === 123) {
      s1 = peg$c4;
      peg$currPos++;
    } else {
      s1 = peg$FAILED;
      if (peg$silentFails === 0) { peg$fail(peg$c5); }
    }
    if (s1 !== peg$FAILED) {
      s2 = peg$parse_();
      if (s2 !== peg$FAILED) {
        s3 = peg$parsevarName();
        if (s3 !== peg$FAILED) {
          s4 = peg$parse_();
          if (s4 !== peg$FAILED) {
            if (input.charCodeAt(peg$currPos) === 44) {
              s5 = peg$c9;
              peg$currPos++;
            } else {
              s5 = peg$FAILED;
              if (peg$silentFails === 0) { peg$fail(peg$c10); }
            }
            if (s5 !== peg$FAILED) {
              s6 = peg$parse_();
              if (s6 !== peg$FAILED) {
                if (input.substr(peg$currPos, 6) === peg$c25) {
                  s7 = peg$c25;
                  peg$currPos += 6;
                } else {
                  s7 = peg$FAILED;
                  if (peg$silentFails === 0) { peg$fail(peg$c26); }
                }
                if (s7 !== peg$FAILED) {
                  s8 = peg$parse_();
                  if (s8 !== peg$FAILED) {
                    if (input.charCodeAt(peg$currPos) === 44) {
                      s9 = peg$c9;
                      peg$currPos++;
                    } else {
                      s9 = peg$FAILED;
                      if (peg$silentFails === 0) { peg$fail(peg$c10); }
                    }
                    if (s9 !== peg$FAILED) {
                      s10 = peg$parse_();
                      if (s10 !== peg$FAILED) {
                        s11 = [];
                        s12 = peg$parseselectOption();
                        if (s12 !== peg$FAILED) {
                          while (s12 !== peg$FAILED) {
                            s11.push(s12);
                            s12 = peg$parseselectOption();
                          }
                        } else {
                          s11 = peg$FAILED;
                        }
                        if (s11 !== peg$FAILED) {
                          s12 = peg$parse_();
                          if (s12 !== peg$FAILED) {
                            if (input.charCodeAt(peg$currPos) === 125) {
                              s13 = peg$c6;
                              peg$currPos++;
                            } else {
                              s13 = peg$FAILED;
                              if (peg$silentFails === 0) { peg$fail(peg$c7); }
                            }
                            if (s13 !== peg$FAILED) {
                              peg$savedPos = s0;
                              s1 = peg$c27(s3, s11);
                              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;
                    }
                  } 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;
          }
        } 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$parsepluralRuleSelectValue(): any {
    let s0;

    if (input.substr(peg$currPos, 2) === peg$c28) {
      s0 = peg$c28;
      peg$currPos += 2;
    } else {
      s0 = peg$FAILED;
      if (peg$silentFails === 0) { peg$fail(peg$c29); }
    }
    if (s0 === peg$FAILED) {
      if (input.substr(peg$currPos, 2) === peg$c30) {
        s0 = peg$c30;
        peg$currPos += 2;
      } else {
        s0 = peg$FAILED;
        if (peg$silentFails === 0) { peg$fail(peg$c31); }
      }
      if (s0 === peg$FAILED) {
        if (input.substr(peg$currPos, 2) === peg$c32) {
          s0 = peg$c32;
          peg$currPos += 2;
        } else {
          s0 = peg$FAILED;
          if (peg$silentFails === 0) { peg$fail(peg$c33); }
        }
        if (s0 === peg$FAILED) {
          if (input.substr(peg$currPos, 4) === peg$c34) {
            s0 = peg$c34;
            peg$currPos += 4;
          } else {
            s0 = peg$FAILED;
            if (peg$silentFails === 0) { peg$fail(peg$c35); }
          }
          if (s0 === peg$FAILED) {
            if (input.substr(peg$currPos, 3) === peg$c36) {
              s0 = peg$c36;
              peg$currPos += 3;
            } else {
              s0 = peg$FAILED;
              if (peg$silentFails === 0) { peg$fail(peg$c37); }
            }
            if (s0 === peg$FAILED) {
              if (input.substr(peg$currPos, 3) === peg$c38) {
                s0 = peg$c38;
                peg$currPos += 3;
              } else {
                s0 = peg$FAILED;
                if (peg$silentFails === 0) { peg$fail(peg$c39); }
              }
              if (s0 === peg$FAILED) {
                if (input.substr(peg$currPos, 3) === peg$c40) {
                  s0 = peg$c40;
                  peg$currPos += 3;
                } else {
                  s0 = peg$FAILED;
                  if (peg$silentFails === 0) { peg$fail(peg$c41); }
                }
                if (s0 === peg$FAILED) {
                  if (input.substr(peg$currPos, 4) === peg$c42) {
                    s0 = peg$c42;
                    peg$currPos += 4;
                  } else {
                    s0 = peg$FAILED;
                    if (peg$silentFails === 0) { peg$fail(peg$c43); }
                  }
                  if (s0 === peg$FAILED) {
                    if (input.substr(peg$currPos, 5) === peg$c44) {
                      s0 = peg$c44;
                      peg$currPos += 5;
                    } else {
                      s0 = peg$FAILED;
                      if (peg$silentFails === 0) { peg$fail(peg$c45); }
                    }
                  }
                }
              }
            }
          }
        }
      }
    }

    return s0;
  }

  function peg$parseselectOption(): PluralOrSelectOption {
    let s0, s1, s2, s3, s4, s5, s6;

    s0 = peg$currPos;
    s1 = peg$parse_();
    if (s1 !== peg$FAILED) {
      s2 = peg$parsechars();
      if (s2 !== peg$FAILED) {
        s3 = peg$parse_();
        if (s3 !== peg$FAILED) {
          if (input.charCodeAt(peg$currPos) === 123) {
            s4 = peg$c4;
            peg$currPos++;
          } else {
            s4 = peg$FAILED;
            if (peg$silentFails === 0) { peg$fail(peg$c5); }
          }
          if (s4 !== peg$FAILED) {
            s5 = peg$parsemessage();
            if (s5 !== peg$FAILED) {
              if (input.charCodeAt(peg$currPos) === 125) {
                s6 = peg$c6;
                peg$currPos++;
              } else {
                s6 = peg$FAILED;
                if (peg$silentFails === 0) { peg$fail(peg$c7); }
              }
              if (s6 !== peg$FAILED) {
                peg$savedPos = s0;
                s1 = peg$c46(s2, s5);
                s0 = s1;
              } else {
                peg$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$FAILED;
      }
    } else {
      peg$currPos = s0;
      s0 = peg$FAILED;
    }

    return s0;
  }

  function peg$parsepluralOption(): PluralOrSelectOption {
    let s0, s1, s2, s3, s4, s5, s6;

    s0 = peg$currPos;
    s1 = peg$parse_();
    if (s1 !== peg$FAILED) {
      s2 = peg$parsepluralRuleSelectValue();
      if (s2 !== peg$FAILED) {
        s3 = peg$parse_();
        if (s3 !== peg$FAILED) {
          if (input.charCodeAt(peg$currPos) === 123) {
            s4 = peg$c4;
            peg$currPos++;
          } else {
            s4 = peg$FAILED;
            if (peg$silentFails === 0) { peg$fail(peg$c5); }
          }
          if (s4 !== peg$FAILED) {
            s5 = peg$parsemessage();
            if (s5 !== peg$FAILED) {
              if (input.charCodeAt(peg$currPos) === 125) {
                s6 = peg$c6;
                peg$currPos++;
              } else {
                s6 = peg$FAILED;
                if (peg$silentFails === 0) { peg$fail(peg$c7); }
              }
              if (s6 !== peg$FAILED) {
                peg$savedPos = s0;
                s1 = peg$c47(s2, s5);
                s0 = s1;
              } else {
                peg$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$FAILED;
      }
    } else {
      peg$currPos = s0;
      s0 = peg$FAILED;
    }

    return s0;
  }

  function peg$parsews(): string {
    let s0, s1;

    peg$silentFails++;
    s0 = [];
    if (peg$c49.test(input.charAt(peg$currPos))) {
      s1 = input.charAt(peg$currPos);
      peg$currPos++;
    } else {
      s1 = peg$FAILED;
      if (peg$silentFails === 0) { peg$fail(peg$c50); }
    }
    if (s1 !== peg$FAILED) {
      while (s1 !== peg$FAILED) {
        s0.push(s1);
        if (peg$c49.test(input.charAt(peg$currPos))) {
          s1 = input.charAt(peg$currPos);
          peg$currPos++;
        } else {
          s1 = peg$FAILED;
          if (peg$silentFails === 0) { peg$fail(peg$c50); }
        }
      }
    } else {
      s0 = peg$FAILED;
    }
    peg$silentFails--;
    if (s0 === peg$FAILED) {
      s1 = peg$FAILED;
      if (peg$silentFails === 0) { peg$fail(peg$c48); }
    }

    return s0;
  }

  function peg$parse_(): any {
    let s0, s1, s2;

    peg$silentFails++;
    s0 = peg$currPos;
    s1 = [];
    s2 = peg$parsews();
    while (s2 !== peg$FAILED) {
      s1.push(s2);
      s2 = peg$parsews();
    }
    if (s1 !== peg$FAILED) {
      s0 = input.substring(s0, peg$currPos);
    } else {
      s0 = s1;
    }
    peg$silentFails--;
    if (s0 === peg$FAILED) {
      s1 = peg$FAILED;
      if (peg$silentFails === 0) { peg$fail(peg$c51); }
    }

    return s0;
  }

  function peg$parsedigit(): string {
    let s0;

    if (peg$c52.test(input.charAt(peg$currPos))) {
      s0 = input.charAt(peg$currPos);
      peg$currPos++;
    } else {
      s0 = peg$FAILED;
      if (peg$silentFails === 0) { peg$fail(peg$c53); }
    }

    return s0;
  }

  function peg$parsehexDigit(): string {
    let s0;

    if (peg$c54.test(input.charAt(peg$currPos))) {
      s0 = input.charAt(peg$currPos);
      peg$currPos++;
    } else {
      s0 = peg$FAILED;
      if (peg$silentFails === 0) { peg$fail(peg$c55); }
    }

    return s0;
  }

  function peg$parsenumber(): number {
    let s0, s1, s2;

    s0 = peg$currPos;
    s1 = [];
    s2 = peg$parsedigit();
    if (s2 !== peg$FAILED) {
      while (s2 !== peg$FAILED) {
        s1.push(s2);
        s2 = peg$parsedigit();
      }
    } else {
      s1 = peg$FAILED;
    }
    if (s1 !== peg$FAILED) {
      peg$savedPos = s0;
      s1 = peg$c56(s1);
    }
    s0 = s1;

    return s0;
  }

  function peg$parsequoteEscapedChar(): string {
    let s0, s1, s2;

    s0 = peg$currPos;
    s1 = peg$currPos;
    peg$silentFails++;
    if (input.charCodeAt(peg$currPos) === 39) {
      s2 = peg$c57;
      peg$currPos++;
    } else {
      s2 = peg$FAILED;
      if (peg$silentFails === 0) { peg$fail(peg$c58); }
    }
    if (s2 === peg$FAILED) {
      if (peg$c59.test(input.charAt(peg$currPos))) {
        s2 = input.charAt(peg$currPos);
        peg$currPos++;
      } else {
        s2 = peg$FAILED;
        if (peg$silentFails === 0) { peg$fail(peg$c60); }
      }
    }
    peg$silentFails--;
    if (s2 === peg$FAILED) {
      s1 = undefined;
    } else {
      peg$currPos = s1;
      s1 = peg$FAILED;
    }
    if (s1 !== peg$FAILED) {
      if (input.length > peg$currPos) {
        s2 = input.charAt(peg$currPos);
        peg$currPos++;
      } else {
        s2 = peg$FAILED;
        if (peg$silentFails === 0) { peg$fail(peg$c61); }
      }
      if (s2 !== peg$FAILED) {
        peg$savedPos = s0;
        s1 = peg$c62(s2);
        s0 = s1;
      } 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$currPos) === 39) {
        s1 = peg$c57;
        peg$currPos++;
      } else {
        s1 = peg$FAILED;
        if (peg$silentFails === 0) { peg$fail(peg$c58); }
      }
      if (s1 !== peg$FAILED) {
        s2 = peg$parseescape();
        if (s2 !== peg$FAILED) {
          peg$savedPos = s0;
          s1 = peg$c63(s2);
          s0 = s1;
        } else {
          peg$currPos = s0;
          s0 = peg$FAILED;
        }
      } else {
        peg$currPos = s0;
        s0 = peg$FAILED;
      }
    }

    return s0;
  }

  function peg$parseapostrophe(): string {
    let s0, s1;

    peg$silentFails++;
    if (input.charCodeAt(peg$currPos) === 39) {
      s0 = peg$c57;
      peg$currPos++;
    } else {
      s0 = peg$FAILED;
      if (peg$silentFails === 0) { peg$fail(peg$c58); }
    }
    peg$silentFails--;
    if (s0 === peg$FAILED) {
      s1 = peg$FAILED;
      if (peg$silentFails === 0) { peg$fail(peg$c64); }
    }

    return s0;
  }

  function peg$parseescape(): string {
    let s0;

    if (peg$c59.test(input.charAt(peg$currPos))) {
      s0 = input.charAt(peg$currPos);
      peg$currPos++;
    } else {
      s0 = peg$FAILED;
      if (peg$silentFails === 0) { peg$fail(peg$c60); }
    }
    if (s0 === peg$FAILED) {
      s0 = peg$parseapostrophe();
    }

    return s0;
  }

  function peg$parsechar(): string {
    let s0, s1, s2, s3, s4, s5, s6, s7;

    s0 = peg$currPos;
    if (input.charCodeAt(peg$currPos) === 39) {
      s1 = peg$c57;
      peg$currPos++;
    } else {
      s1 = peg$FAILED;
      if (peg$silentFails === 0) { peg$fail(peg$c58); }
    }
    if (s1 !== peg$FAILED) {
      s2 = peg$parseapostrophe();
      if (s2 !== peg$FAILED) {
        peg$savedPos = s0;
        s1 = peg$c63(s2);
        s0 = s1;
      } else {
        peg$currPos = s0;
        s0 = peg$FAILED;
      }
    } else {
      peg$currPos = s0;
      s0 = peg$FAILED;
    }
    if (s0 === peg$FAILED) {
      if (peg$c65.test(input.charAt(peg$currPos))) {
        s0 = input.charAt(peg$currPos);
        peg$currPos++;
      } else {
        s0 = peg$FAILED;
        if (peg$silentFails === 0) { peg$fail(peg$c66); }
      }
      if (s0 === peg$FAILED) {
        s0 = peg$currPos;
        if (input.substr(peg$currPos, 2) === peg$c67) {
          s1 = peg$c67;
          peg$currPos += 2;
        } else {
          s1 = peg$FAILED;
          if (peg$silentFails === 0) { peg$fail(peg$c68); }
        }
        if (s1 !== peg$FAILED) {
          peg$savedPos = s0;
          s1 = peg$c69();
        }
        s0 = s1;
        if (s0 === peg$FAILED) {
          s0 = peg$currPos;
          if (input.substr(peg$currPos, 2) === peg$c70) {
            s1 = peg$c70;
            peg$currPos += 2;
          } else {
            s1 = peg$FAILED;
            if (peg$silentFails === 0) { peg$fail(peg$c71); }
          }
          if (s1 !== peg$FAILED) {
            peg$savedPos = s0;
            s1 = peg$c72();
          }
          s0 = s1;
          if (s0 === peg$FAILED) {
            s0 = peg$currPos;
            if (input.substr(peg$currPos, 2) === peg$c73) {
              s1 = peg$c73;
              peg$currPos += 2;
            } else {
              s1 = peg$FAILED;
              if (peg$silentFails === 0) { peg$fail(peg$c74); }
            }
            if (s1 !== peg$FAILED) {
              peg$savedPos = s0;
              s1 = peg$c75();
            }
            s0 = s1;
            if (s0 === peg$FAILED) {
              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) {
                peg$savedPos = s0;
                s1 = peg$c78();
              }
              s0 = s1;
              if (s0 === peg$FAILED) {
                s0 = peg$currPos;
                if (input.substr(peg$currPos, 2) === peg$c79) {
                  s1 = peg$c79;
                  peg$currPos += 2;
                } else {
                  s1 = peg$FAILED;
                  if (peg$silentFails === 0) { peg$fail(peg$c80); }
                }
                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$FAILED;
                        }
                      } else {
                        peg$currPos = s3;
                        s3 = peg$FAILED;
                      }
                    } else {
                      peg$currPos = s3;
                      s3 = peg$FAILED;
                    }
                  } else {
                    peg$currPos = s3;
                    s3 = peg$FAILED;
                  }
                  if (s3 !== peg$FAILED) {
                    s2 = input.substring(s2, peg$currPos);
                  } else {
                    s2 = s3;
                  }
                  if (s2 !== peg$FAILED) {
                    peg$savedPos = s0;
                    s1 = peg$c81(s2);
                    s0 = s1;
                  } else {
                    peg$currPos = s0;
                    s0 = peg$FAILED;
                  }
                } else {
                  peg$currPos = s0;
                  s0 = peg$FAILED;
                }
              }
            }
          }
        }
      }
    }

    return s0;
  }

  function peg$parsechars(): string {
    let s0, s1, s2;

    s0 = peg$currPos;
    s1 = [];
    s2 = peg$parsechar();
    if (s2 !== peg$FAILED) {
      while (s2 !== peg$FAILED) {
        s1.push(s2);
        s2 = peg$parsechar();
      }
    } else {
      s1 = peg$FAILED;
    }
    if (s1 !== peg$FAILED) {
      peg$savedPos = s0;
      s1 = peg$c2(s1);
    }
    s0 = s1;

    return s0;
  }


      function insertLocation () {
          return options && options.captureLocation ? {
              location: location()
          }: {}
      }


  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)
    );
  }
}

export interface IParseOptions {
  filename?: string;
  startRule?: string;
  tracer?: any;
  [key: string]: any;
}
export type ParseFunction = (input: string, options?: IParseOptions) => MessageFormatElement[];
export const parse: ParseFunction = peg$parse;