Grammar.java 文件源码

/** Given a token type, get a meaningful name for it such as the ID
 *  or string literal.  If this is a lexer and the ttype is in the
 *  char vocabulary, compute an ANTLR-valid (possibly escaped) char literal.
 */
public String getTokenDisplayName(int ttype) {
    // inside any target's char range and is lexer grammar?
    if ( isLexer() &&
         ttype >= Lexer.MIN_CHAR_VALUE && ttype <= Lexer.MAX_CHAR_VALUE )
    {
        return CharSupport.getANTLRCharLiteralForChar(ttype);
    }

    if ( ttype==Token.EOF ) {
        return "EOF";
    }

    if ( ttype==Token.INVALID_TYPE ) {
        return INVALID_TOKEN_NAME;
    }

    if (ttype >= 0 && ttype < typeToStringLiteralList.size() && typeToStringLiteralList.get(ttype) != null) {
        return typeToStringLiteralList.get(ttype);
    }

    if (ttype >= 0 && ttype < typeToTokenList.size() && typeToTokenList.get(ttype) != null) {
        return typeToTokenList.get(ttype);
    }

    return String.valueOf(ttype);
}