private BoundExpression BindNullIfExpression(NullIfExpressionSyntax node)
{
// NULLIF(left, right)
//
// ===>
//
// CASE WHEN left != right THEN left END
var expressions = BindToCommonType(new[] { node.LeftExpression, node.RightExpression });
var boundLeft = expressions[0];
var boundRight = expressions[1];
var boundComparison = BindBinaryExpression(node.Span, BinaryOperatorKind.NotEqual, boundLeft, boundRight);
var boundCaseLabel = new BoundCaseLabel(boundComparison, boundLeft);
return(new BoundCaseExpression(new[] { boundCaseLabel }, null));
}
public virtual void VisitNullIfExpression(NullIfExpressionSyntax node)
{
DefaultVisit(node);
}
public virtual TResult VisitNullIfExpression(NullIfExpressionSyntax node)
{
return(DefaultVisit(node));
}