internal void And(VisitedExpression andAlso)
{
// useNewPrecedence doesn't matter here since there was no change with the AND operator
_where = OperatorExpression.Build(Operator.And, true, _where, andAlso);
}
internal void And(VisitedExpression andAlso)
{
_where = OperatorExpression.Build(Operator.And, _where, andAlso);
}
private void WriteSql(StringBuilder sqlText, OperatorExpression rightParent)
{
OperatorExpression leftOp = left as OperatorExpression;
OperatorExpression rightOp = right as OperatorExpression;
bool wrapLeft, wrapRight;
if (!useNewPrecedences)
{
wrapLeft = leftOp != null && (op.RightAssoc ? leftOp.op.RightPrecedence <= op.LeftPrecedence : leftOp.op.RightPrecedence < op.LeftPrecedence);
wrapRight = rightOp != null && (!op.RightAssoc ? rightOp.op.LeftPrecedence <= op.RightPrecedence : rightOp.op.LeftPrecedence < op.RightPrecedence);
}
else
{
wrapLeft = leftOp != null && (op.RightAssoc ? leftOp.op.NewPrecedence <= op.NewPrecedence : leftOp.op.NewPrecedence < op.NewPrecedence);
wrapRight = rightOp != null && (!op.RightAssoc ? rightOp.op.NewPrecedence <= op.NewPrecedence : rightOp.op.NewPrecedence < op.NewPrecedence);
}
// Avoid parentheses for prefix operators if possible,
// e.g. BitwiseNot: (a & (~ b)) & c is written as a & ~ b & c
// but (a + (~ b)) + c must be written as a + (~ b) + c
if (!useNewPrecedences)
{
if (wrapRight && rightOp.left == null && (rightParent == null || (!rightParent.op.RightAssoc ? rightOp.op.RightPrecedence >= rightParent.op.LeftPrecedence : rightOp.op.RightPrecedence > rightParent.op.LeftPrecedence)))
{
wrapRight = false;
}
}
else
{
if (wrapRight && rightOp.left == null && (rightParent == null || (!rightParent.op.RightAssoc ? rightOp.op.NewPrecedence >= rightParent.op.NewPrecedence : rightOp.op.NewPrecedence > rightParent.op.NewPrecedence)))
{
wrapRight = false;
}
}
if (left != null)
{
if (wrapLeft)
{
sqlText.Append("(");
}
if (leftOp != null && !wrapLeft)
{
leftOp.WriteSql(sqlText, this);
}
else
{
left.WriteSql(sqlText);
}
if (wrapLeft)
{
sqlText.Append(")");
}
}
sqlText.Append(op.Op);
if (right != null)
{
if (wrapRight)
{
sqlText.Append("(");
}
if (rightOp != null && !wrapRight)
{
rightOp.WriteSql(sqlText, rightParent);
}
else
{
right.WriteSql(sqlText);
}
if (wrapRight)
{
sqlText.Append(")");
}
}
base.WriteSql(sqlText);
}
private void WriteSql(StringBuilder sqlText, OperatorExpression rightParent)
{
OperatorExpression leftOp = left as OperatorExpression;
OperatorExpression rightOp = right as OperatorExpression;
bool wrapLeft = leftOp != null && (op.RightAssoc ? leftOp.op.RightPrecedence <= op.LeftPrecedence : leftOp.op.RightPrecedence < op.LeftPrecedence);
bool wrapRight = rightOp != null && (!op.RightAssoc ? rightOp.op.LeftPrecedence <= op.RightPrecedence : rightOp.op.LeftPrecedence < op.RightPrecedence);
// Avoid parentheses for prefix operators if possible,
// e.g. BitwiseNot: (a & (~ b)) & c is written as a & ~ b & c
// but (a + (~ b)) + c must be written as a + (~ b) + c
if (wrapRight && rightOp.left == null && (rightParent == null || (!rightParent.op.RightAssoc ? rightOp.op.RightPrecedence >= rightParent.op.LeftPrecedence : rightOp.op.RightPrecedence > rightParent.op.LeftPrecedence)))
wrapRight = false;
if (left != null)
{
if (wrapLeft)
sqlText.Append("(");
if (leftOp != null && !wrapLeft)
leftOp.WriteSql(sqlText, this);
else
left.WriteSql(sqlText);
if (wrapLeft)
sqlText.Append(")");
}
sqlText.Append(op.Op);
if (right != null)
{
if (wrapRight)
sqlText.Append("(");
if (rightOp != null && !wrapRight)
rightOp.WriteSql(sqlText, rightParent);
else
right.WriteSql(sqlText);
if (wrapRight)
sqlText.Append(")");
}
base.WriteSql(sqlText);
}