public override void Visit(CaseOp op, Node n)
{
using (new AutoXml(this, op))
{
var i = 0;
while (i < n.Children.Count)
{
if ((i + 1)
< n.Children.Count)
{
using (new AutoXml(this, "when"))
{
VisitNode(n.Children[i++]);
}
using (new AutoXml(this, "then"))
{
VisitNode(n.Children[i++]);
}
}
else
{
using (new AutoXml(this, "else"))
{
VisitNode(n.Children[i++]);
}
}
}
}
}
public override void Visit(CaseOp op, Node n)
{
VisitScalarOpDefault(op, n);
Assert(
(n.Children.Count >= 3 && n.Children.Count % 2 == 1),
"CaseOp: Expected odd number of arguments, and at least 3; found {0}", n.Children.Count);
// Validate that each when statement is of type Boolean
for (var i = 0; i < n.Children.Count - 1; i += 2)
{
Assert(TypeSemantics.IsBooleanType(n.Children[i].Op.Type), "Encountered a when node with a non-boolean return type");
}
// Ensure that the then clauses, the else clause and the result type are all the same
for (var i = 1; i < n.Children.Count - 1; i += 2)
{
AssertEqualTypes(n.Op.Type, n.Children[i].Op.Type);
}
AssertEqualTypes(n.Op.Type, n.Children[n.Children.Count - 1].Op.Type);
}
public override void Visit(CaseOp op, Node n)
{
using (new Dump.AutoXml(this, (Op)op))
{
int num = 0;
while (num < n.Children.Count)
{
if (num + 1 < n.Children.Count)
{
using (new Dump.AutoXml(this, "when"))
this.VisitNode(n.Children[num++]);
using (new Dump.AutoXml(this, "then"))
this.VisitNode(n.Children[num++]);
}
else
{
using (new Dump.AutoXml(this, "else"))
this.VisitNode(n.Children[num++]);
}
}
}
}
// <summary>
// Copies a CaseOp
// </summary>
// <param name="op"> The Op to Copy </param>
// <param name="n"> The Node that references the Op </param>
// <returns> A copy of the original Node that references a copy of the original Op </returns>
public override Node Visit(CaseOp op, Node n)
{
return(CopyDefault(m_destCmd.CreateCaseOp(op.Type), n));
}
public virtual void Visit(CaseOp op, Node n)
{
this.VisitScalarOpDefault((ScalarOp)op, n);
}
/// <summary>
/// Visitor pattern method for CaseOp
/// </summary>
/// <param name="op"> The CaseOp being visited </param>
/// <param name="n"> The Node that references the Op </param>
public virtual void Visit(CaseOp op, Node n)
{
VisitScalarOpDefault(op, n);
}
// <summary>
// CaseOp
// </summary>
public virtual TResultType Visit(CaseOp op, Node n)
{
return(VisitScalarOpDefault(op, n));
}
