private void read()

in HSQL/src/org/hsqldb1/Parser.java [2380:2484]
97 lines of code
69 McCabe index (conditional complexity)

    private void read() throws HsqlException {

        sToken    = tokenizer.getString();
        wasQuoted = tokenizer.wasQuotedIdentifier();

        if (tokenizer.wasValue()) {
            iToken = Expression.VALUE;
            oData  = tokenizer.getAsValue();
            iType  = tokenizer.getType();
        } else if (tokenizer.wasSimpleName()) {
            iToken = Expression.COLUMN;
            sTable = null;
        } else if (tokenizer.wasLongName()) {
            sSchema = tokenizer.getLongNamePre();
            sTable  = tokenizer.getLongNameFirst();

            if (sToken.equals(Token.T_MULTIPLY)) {
                iToken = Expression.MULTIPLY;
            } else {
                iToken = Expression.COLUMN;
            }
        } else if (tokenizer.wasParameter()) {
            iToken = Expression.PARAM;
        } else if (sToken.length() == 0) {
            iToken = Expression.END;
        } else {
            iToken = tokenSet.get(sToken, -1);

            if (iToken == -1) {
                iToken = Expression.END;
            }

            switch (iToken) {

                case Expression.COMMA :
                case Expression.EQUAL :
                case Expression.NOT_EQUAL :
                case Expression.SMALLER :
                case Expression.BIGGER :
                case Expression.SMALLER_EQUAL :
                case Expression.BIGGER_EQUAL :
                case Expression.AND :
                case Expression.OR :
                case Expression.NOT :
                case Expression.ALL :
                case Expression.ANY :
                case Expression.IN :
                case Expression.EXISTS :
                case Expression.BETWEEN :
                case Expression.PLUS :
                case Expression.NEGATE :
                case Expression.DIVIDE :
                case Expression.CONCAT :
                case Expression.OPEN :
                case Expression.CLOSE :
                case Expression.SELECT :
                case Expression.LIKE :
                case Expression.COUNT :
                case Expression.SUM :
                case Expression.MIN :
                case Expression.MAX :
                case Expression.AVG :
                case Expression.EVERY :
                case Expression.SOME :
                case Expression.STDDEV_POP :
                case Expression.STDDEV_SAMP :
                case Expression.VAR_POP :
                case Expression.VAR_SAMP :
                case Expression.CONVERT :
                case Expression.CAST :
                case Expression.SEQUENCE :
                case Expression.IFNULL :
                case Expression.COALESCE :
                case Expression.NULLIF :
                case Expression.CASE :
                case Expression.WHEN :
                case Expression.THEN :
                case Expression.ELSE :
                case Expression.ENDWHEN :
                case Expression.CASEWHEN :
                case Expression.EXTRACT :
                case Expression.POSITION :
                case Expression.SUBSTRING :
                case Expression.FROM :
                case Expression.FOR :
                case Expression.END :
                case Expression.PARAM :
                case Expression.TRIM :
                case Expression.LEADING :
                case Expression.TRAILING :
                case Expression.BOTH :
                case Expression.AS :
                case Expression.IS :
                case Expression.DISTINCT :
                    break;            // nothing else required, iToken initialized properly

                case Expression.MULTIPLY :
                    sTable = null;    // in case of ASTERIX
                    break;

                default :
                    iToken = Expression.END;
            }
        }
    }