Review

class Parser {
    private Node statement()
        throws IOException
    {
        try {
            Node pn = statementHelper(null);
            if (pn != null) {
                if (compilerEnv.isStrictMode() && !pn.hasSideEffects())
                    addStrictWarning("msg.no.side.effects", "");
                return pn;
            }
        } catch (ParserException e) { }

        // skip to end of statement
        int lineno = ts.getLineno();
        int charno = ts.getCharno();
        guessingStatementEnd: for (;;) {
            int tt = peekTokenOrEOL();
            consumeToken();
            switch (tt) {
              case Token.ERROR:
              case Token.EOF:
              case Token.EOL:
              case Token.SEMI:
                break guessingStatementEnd;
            }
        }
        return nf.createExprStatement(nf.createErrorName(), lineno, charno);
    }

}