| package org.antlr.runtime { |
| public class TokenConstants { |
| public static const EOR_TOKEN_TYPE:int = 1; |
| |
| /** imaginary tree navigation type; traverse "get child" link */ |
| public static const DOWN:int = 2; |
| /** imaginary tree navigation type; finish with a child list */ |
| public static const UP:int = 3; |
| |
| public static const MIN_TOKEN_TYPE:int = UP+1; |
| |
| public static const EOF:int = CharStreamConstants.EOF; |
| public static const EOF_TOKEN:Token = new CommonToken(EOF); |
| |
| public static const INVALID_TOKEN_TYPE:int = 0; |
| public static const INVALID_TOKEN:Token = new CommonToken(INVALID_TOKEN_TYPE); |
| |
| /** In an action, a lexer rule can set token to this SKIP_TOKEN and ANTLR |
| * will avoid creating a token for this symbol and try to fetch another. |
| */ |
| public static const SKIP_TOKEN:Token = new CommonToken(INVALID_TOKEN_TYPE); |
| |
| /** All tokens go to the parser (unless skip() is called in that rule) |
| * on a particular "channel". The parser tunes to a particular channel |
| * so that whitespace etc... can go to the parser on a "hidden" channel. |
| */ |
| public static const DEFAULT_CHANNEL:int = 0; |
| |
| /** Anything on different channel than DEFAULT_CHANNEL is not parsed |
| * by parser. |
| */ |
| public static const HIDDEN_CHANNEL:int = 99; |
| |
| } |
| } |