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

Example 21 with Expression

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

the class MySQLDMLInsertParser method onDuplicateUpdate.

/**
 * @return null for not exist
 */
private List<Pair<Identifier, Expression>> onDuplicateUpdate() throws SQLSyntaxErrorException {
    if (lexer.token() != KW_ON) {
        return null;
    }
    lexer.nextToken();
    matchIdentifier("DUPLICATE");
    match(KW_KEY);
    match(KW_UPDATE);
    List<Pair<Identifier, Expression>> list;
    Identifier col = identifier();
    match(OP_EQUALS, OP_ASSIGN);
    Expression expr = exprParser.expression();
    if (lexer.token() == PUNC_COMMA) {
        list = new LinkedList<Pair<Identifier, Expression>>();
        list.add(new Pair<Identifier, Expression>(col, expr));
        for (; lexer.token() == PUNC_COMMA; ) {
            lexer.nextToken();
            col = identifier();
            match(OP_EQUALS, OP_ASSIGN);
            expr = exprParser.expression();
            list.add(new Pair<Identifier, Expression>(col, expr));
        }
        return list;
    }
    list = new ArrayList<Pair<Identifier, Expression>>(1);
    list.add(new Pair<Identifier, Expression>(col, expr));
    return list;
}

Example 22 with Expression

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

the class MySQLExprParser method arithmeticTermOperatorExpression.

/**
 * <code>higherExpr ( ('+'|'-') higherExpr)+</code>
 */
private Expression arithmeticTermOperatorExpression(String consumed, String consumedUp) throws SQLSyntaxErrorException {
    Expression temp;
    for (Expression expr = arithmeticFactorOperatorExpression(consumed, consumedUp); ; ) {
        switch(lexer.token()) {
            case OP_PLUS:
                lexer.nextToken();
                temp = arithmeticFactorOperatorExpression(null, null);
                expr = new ArithmeticAddExpression(expr, temp).setCacheEvalRst(cacheEvalRst);
                break;
            case OP_MINUS:
                lexer.nextToken();
                temp = arithmeticFactorOperatorExpression(null, null);
                expr = new ArithmeticSubtractExpression(expr, temp).setCacheEvalRst(cacheEvalRst);
                break;
            default:
                return expr;
        }
    }
}

Example 23 with Expression

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

the class MySQLExprParser method bitXORExpression.

/**
 * <code>higherExpr ('^' higherExpr)+</code>
 */
private Expression bitXORExpression(String consumed, String consumedUp) throws SQLSyntaxErrorException {
    Expression temp;
    for (Expression expr = unaryOpExpression(consumed, consumedUp); ; ) {
        switch(lexer.token()) {
            case OP_CARET:
                lexer.nextToken();
                temp = unaryOpExpression(null, null);
                expr = new BitXORExpression(expr, temp).setCacheEvalRst(cacheEvalRst);
                break;
            default:
                return expr;
        }
    }
}

Example 24 with Expression

use of com.alibaba.cobar.parser.ast.expression.Expression 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 25 with Expression

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

the class MySQLExprParser method ordinaryFunction.

/**
 * id has been consumed. id must be a function name. current token must be
 * {@link MySQLToken#PUNC_LEFT_PAREN}
 *
 * @param idUpper must be name of a function
 * @return never null
 */
private FunctionExpression ordinaryFunction(String id, String idUpper) throws SQLSyntaxErrorException {
    idUpper = Identifier.unescapeName(idUpper);
    match(PUNC_LEFT_PAREN);
    FunctionExpression funcExpr;
    if (lexer.token() == PUNC_RIGHT_PAREN) {
        lexer.nextToken();
        funcExpr = functionManager.createFunctionExpression(idUpper, null);
    } else {
        List<Expression> args = expressionList(new LinkedList<Expression>());
        funcExpr = functionManager.createFunctionExpression(idUpper, args);
    }
    if (funcExpr == null) {
        throw new SQLSyntaxErrorException(id + "() is not a function");
    }
    funcExpr.setCacheEvalRst(cacheEvalRst);
    return funcExpr;
}