import { Lexer } from "./Lexer";
import { LexerMatcher } from "./LexerMatcher";
import { LexerMatcherLibrary } from "./LexerMatcherLibrary";

export class DateExpressionLexer extends Lexer
{
  static readonly Now = new LexerMatcher( "Now", /now|jetzt/i );
  static readonly Time = new LexerMatcher( "Time", /\d?\d\:\d\d(\:\d\d)?\s*(am|h|uhr)?/i );
  
  static readonly LongDateMinus = new LexerMatcher( "LongDateMinus", /\d?\d\-\d?\d\-\d\d\d\d/ );
  static readonly LongDateDot = new LexerMatcher( "LongDateDot", /\d?\d\.\d?\d\.\d\d\d\d/ );
  static readonly LongDateSlash = new LexerMatcher( "LongDateSlash", /\d?\d\/\d?\d\/\d\d\d\d/ );

  static readonly ReverseLongDateMinus = new LexerMatcher( "ReverseLongDateMinus", /\d\d\d\d\-\d?\d\-\d?\d/ );
  static readonly ReverseLongDateDot = new LexerMatcher( "ReverseLongDateDot", /\d\d\d\d\.\d?\d\.\d?\d/ );
  static readonly ReverseLongDateSlash = new LexerMatcher( "ReverseLongDateSlash", /\d\d\d\d\/\d?\d\/\d?\d/ );

  static readonly DateMinus = new LexerMatcher( "DateMinus", /\d?\d\-\d?\d\-\d\d/ );
  static readonly DateDot = new LexerMatcher( "DateDot", /\d?\d\.\d?\d\.\d\d/ );
  static readonly DateSlash = new LexerMatcher( "DateSlash", /\d?\d\/\d?\d\/\d\d/ );

  static readonly ShortDateMinus = new LexerMatcher( "ShortDateMinus", /\d?\d\-\d?\d(\-)?/ );
  static readonly ShortDateDot = new LexerMatcher( "ShortDateDot", /\d?\d\.\d?\d(\.)?/ );
  static readonly ShortDateSlash = new LexerMatcher( "ShortDateSlash", /\d?\d\/\d?\d(\/)?/ );
  
  constructor()
  {
    super();

    this.addAllMatchers( 

      DateExpressionLexer.Now,
      DateExpressionLexer.Time,

      DateExpressionLexer.LongDateMinus,
      DateExpressionLexer.LongDateDot,
      DateExpressionLexer.LongDateSlash,

      DateExpressionLexer.ReverseLongDateMinus,
      DateExpressionLexer.ReverseLongDateDot,
      DateExpressionLexer.ReverseLongDateSlash,

      DateExpressionLexer.DateMinus,
      DateExpressionLexer.DateDot,
      DateExpressionLexer.DateSlash,

      DateExpressionLexer.ShortDateMinus,
      DateExpressionLexer.ShortDateDot,
      DateExpressionLexer.ShortDateSlash,

      LexerMatcherLibrary.WHITESPACE_MATCHER,
      LexerMatcherLibrary.BREAK_MATCHER,
      LexerMatcherLibrary.ANY_SYMBOL_MATCHER
    );

  }

}