with

    Ada.Characters.Latin_1;


package body Packrat.Util is


    package Latin renames Ada.Characters.Latin_1;




    function In_Set
           (Element : in Character)
        return Boolean is
    begin
        return False;
    end In_Set;


    function Not_In_Set
           (Element : in Character)
        return Boolean is
    begin
        return False;
    end Not_In_Set;





    function Is_Digit
           (Char : in Character)
        return Boolean is
    begin
        return (Char >= '0' and Char <= '9');
    end Is_Digit;


    function Is_Hex
           (Char : in Character)
        return Boolean is
    begin
        return
            (Char >= '0' and Char <= '9') or
            (Char >= 'A' and Char <= 'F') or
            (Char >= 'a' and Char <= 'f');
    end Is_Hex;


    function Is_Letter
           (Char : in Character)
        return Boolean is
    begin
        return
            (Char >= 'A' and Char <= 'Z') or
            (Char >= 'a' and Char <= 'z');
    end Is_Letter;


    function Is_Alphanumeric
           (Char : in Character)
        return Boolean is
    begin
        return Is_Digit (Char) or Is_Letter (Char);
    end Is_Alphanumeric;


    function Is_Punctuation
           (Char : in Character)
        return Boolean is
    begin
        return
            (Char >= '!' and Char <= '/') or
            (Char >= ':' and Char <= '@') or
            (Char >= '[' and Char <= '`') or
            (Char >= '{' and Char <= '~');
    end Is_Punctuation;


    function Is_ASCII
           (Char : in Character)
        return Boolean is
    begin
        return Char <= Character'Val (127);
    end Is_ASCII;


    function Is_Extended_ASCII
           (Char : in Character)
        return Boolean is
    begin
        return Char >= Character'Val (128);
    end Is_Extended_ASCII;


    function Is_Space
           (Char : in Character)
        return Boolean is
    begin
        return Char = ' ';
    end Is_Space;


    function Is_Linespace
           (Char : in Character)
        return Boolean is
    begin
        return (Char = ' ' or Char = Latin.HT);
    end Is_Linespace;


    function Is_End_Of_Line
           (Char : in Character)
        return Boolean is
    begin
        return (Char = Latin.LF or Char = Latin.CR);
    end Is_End_Of_Line;


    function Is_Whitespace
           (Char : in Character)
        return Boolean is
    begin
        return
            Char = Latin.HT or
            Char = Latin.LF or
            Char = Latin.CR or
            Char = ' ';
    end Is_Whitespace;


    function Not_Whitespace
           (Char : in Character)
        return Boolean is
    begin
        return not Is_Whitespace (Char);
    end Not_Whitespace;


end Packrat.Util;