public int size()

in jflex/src/main/java/jflex/core/RegExp.java [96:156]
47 lines of code
17 McCabe index (conditional complexity)

  public int size(Macros macros) {
    RegExp1 unary;
    RegExp2 binary;
    RegExp content;

    switch (type) {
      case sym.BAR:
        binary = (RegExp2) this;
        return binary.r1.size(macros) + binary.r2.size(macros) + 2;

      case sym.CONCAT:
        binary = (RegExp2) this;
        return binary.r1.size(macros) + binary.r2.size(macros);

      case sym.STAR:
      case sym.PLUS:
        unary = (RegExp1) this;
        content = (RegExp) unary.content;
        return content.size(macros) + 2;

      case sym.QUESTION:
        unary = (RegExp1) this;
        content = (RegExp) unary.content;
        return content.size(macros);

      case sym.BANG:
        unary = (RegExp1) this;
        content = (RegExp) unary.content;
        return content.size(macros) * content.size(macros);
        // this is only a very rough estimate (worst case 2^n)
        // exact size too complicated (propably requires construction)

      case sym.TILDE:
        unary = (RegExp1) this;
        content = (RegExp) unary.content;
        return content.size(macros) * content.size(macros) * 3;
        // see sym.BANG

      case sym.STRING:
      case sym.STRING_I:
        unary = (RegExp1) this;
        return ((String) unary.content).length() + 1;

      case sym.CHAR:
      case sym.CHAR_I:
        return 2;

      case sym.CCLASS:
      case sym.CCLASSNOT:
      case sym.CCLASSOP:
      case sym.PRIMCLASS:
        return 2;

      case sym.MACROUSE:
        unary = (RegExp1) this;
        return macros.getDefinition((String) unary.content).size(macros);

      default:
        throw new RegExpException(this);
    }
  }