Examples with BitShiftExpression com.alibaba.cobar.parser.ast.expression.bit.BitShiftExpression used on opensource projects

Example 1 with BitShiftExpression

use of com.alibaba.cobar.parser.ast.expression.bit.BitShiftExpression in project cobar by alibaba.

the class MySQLExprParser method bitAndExpression.

private Expression bitAndExpression(String consumed, String consumedUp) throws SQLSyntaxErrorException {
    for (Expression expr = bitShiftExpression(consumed, consumedUp); ; ) {
        switch(lexer.token()) {
            case OP_AMPERSAND:
                lexer.nextToken();
                Expression newExpr = bitShiftExpression(null, null);
                expr = new BitAndExpression(expr, newExpr).setCacheEvalRst(cacheEvalRst);
                break;
            default:
                return expr;
        }
    }
}

Example 2 with BitShiftExpression

use of com.alibaba.cobar.parser.ast.expression.bit.BitShiftExpression in project cobar by alibaba.

the class MySQLExprParser method bitShiftExpression.

/**
     * <code>higherExpr ( ('&lt;&lt;'|'&gt;&gt;') higherExpr)+</code>
     */
private Expression bitShiftExpression(String consumed, String consumedUp) throws SQLSyntaxErrorException {
    Expression temp;
    for (Expression expr = arithmeticTermOperatorExpression(consumed, consumedUp); ; ) {
        switch(lexer.token()) {
            case OP_LEFT_SHIFT:
                lexer.nextToken();
                temp = arithmeticTermOperatorExpression(null, null);
                expr = new BitShiftExpression(false, expr, temp).setCacheEvalRst(cacheEvalRst);
                break;
            case OP_RIGHT_SHIFT:
                lexer.nextToken();
                temp = arithmeticTermOperatorExpression(null, null);
                expr = new BitShiftExpression(true, expr, temp).setCacheEvalRst(cacheEvalRst);
                break;
            default:
                return expr;
        }
    }
}

Example 3 with BitShiftExpression

use of com.alibaba.cobar.parser.ast.expression.bit.BitShiftExpression in project cobar by alibaba.

the class MySQLExprParserTest method testBit.

public void testBit() throws Exception {
    String sql = "0b01001001 | 3 & 1.2 <<d >> 0x0f";
    MySQLExprParser parser = new MySQLExprParser(new MySQLLexer(sql));
    Expression expr = parser.expression();
    String output = output2MySQL(expr, sql);
    Assert.assertEquals("b'01001001' | 3 & 1.2 << d >> x'0f'", output);
    BitOrExpression or = (BitOrExpression) expr;
    BitAndExpression and = (BitAndExpression) or.getRightOprand();
    BitShiftExpression rs = (BitShiftExpression) and.getRightOprand();
    BitShiftExpression ls = (BitShiftExpression) rs.getLeftOprand();
    Assert.assertEquals("d", ((Identifier) ls.getRightOprand()).getIdText());
    Assert.assertTrue(rs.isRightShift());
    Assert.assertFalse(ls.isRightShift());
    sql = "true + b & false ^ d - null ";
    parser = new MySQLExprParser(new MySQLLexer(sql));
    expr = parser.expression();
    output = output2MySQL(expr, sql);
    Assert.assertEquals("TRUE + b & FALSE ^ d - NULL", output);
    and = (BitAndExpression) expr;
    ArithmeticAddExpression add = (ArithmeticAddExpression) and.getLeftOprand();
    ArithmeticSubtractExpression sub = (ArithmeticSubtractExpression) and.getRightOprand();
    BitXORExpression xor = (BitXORExpression) sub.getLeftOprand();
    Assert.assertEquals("d", ((Identifier) xor.getRightOprand()).getIdText());
    Assert.assertEquals("b", ((Identifier) add.getRightOprand()).getIdText());
}