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|
options
{
language = "CSharp";
}
class L extends Lexer;
options {
// Allow any char but \uFFFF (16 bit -1)
charVocabulary='\u0000'..'\uFFFE';
}
{
private static bool done = false;
public override void uponEOF() {
done=true;
}
public static void Main(string[] args) {
L lexer = new L(new CharBuffer(Console.In));
while ( !done ) {
IToken t = lexer.nextToken();
Console.Out.WriteLine("Token: "+t);
}
}
}
ID : ID_START_LETTER ( ID_LETTER )*
;
// Whitespace
WS : ( ' '
| '\t'
| '\f'
// handle newlines
| ( "\r\n" // Evil DOS
| '\r' // Macintosh
| '\n' // Unix (the right way)
)
{ newline(); }
)
{ $setType(Token.SKIP); }
;
protected
ID_START_LETTER
: '$'
| '_'
| 'a'..'z'
| '\u0080'..'\ufffe'
;
protected
ID_LETTER
: ID_START_LETTER
| '0'..'9'
;
|
