Method match

output/java8/1.4.17/STLexer.java:209–218

Consume if x is next character on the input stream.

(char x)

     */

    public void match(char x) {
        if ( c!= x ) {
            NoViableAltException e = new NoViableAltException("", 0, 0, input);
            errMgr.lexerError(input.getSourceName(),
                              "expecting '" +x+"', found '"+str(c)+"'",
                              templateToken,
                              e);
        }
        consume();
    }

    protected void consume() {
        input.consume();