private void PrepareUsings(UsingCache cache, TypeConstraintNode node)
{
if (node == null)
{
return;
}
node.Constraints?.ForEach(c => PrepareUsings(cache, c));
}
public AstNode VisitTypeConstraint(TypeConstraintNode n)
{
Append("where ");
Visit(n.Type);
Append(" : ");
Visit(n.Constraints[0]);
foreach (var c in n.Constraints.Skip(1))
{
Append(", ");
Visit(c);
}
return(n);
}
protected virtual void VisitTypeConstraint(TypeConstraintNode node)
{
}
public virtual AstNode VisitTypeConstraint(TypeConstraintNode n)
{
Visit(n.Type);
Visit(n.Constraints);
return(n);
}
protected override void VisitTypeConstraint(TypeConstraintNode node)
{
if (node == null)
{
return;
}
AppendIndentation();
Append("where ");
Append(node.Name);
Append(" : ");
switch (node.Base)
{
case ConstraintBaseType.Struct:
Append("struct");
break;
case ConstraintBaseType.Class:
Append("class");
break;
case ConstraintBaseType.NullableClass:
Append("class?");
break;
case ConstraintBaseType.NotNull:
Append("notnull");
break;
case ConstraintBaseType.Unmanaged:
Append("unmanaged");
break;
case ConstraintBaseType.Enum:
Append("struct, System.Enum");
break;
}
if (node.Base != ConstraintBaseType.None)
{
if (node.Constraints.Length > 0)
{
Append(", ");
}
}
void TryAppendComma(int index)
{
if (index > 0)
{
Append(", ");
}
}
for (var i = 0; i < node.Constraints.Length; i++)
{
switch (node.Constraints[i])
{
case TypeNameConstraint t:
{
TryAppendComma(i);
Append(t.Value);
break;
}
case StringConstraint s:
{
TryAppendComma(i);
Append(s.Value);
break;
}
}
}
if (node.HasDefaultConstructor &&
node.Base != ConstraintBaseType.Struct &&
node.Base != ConstraintBaseType.Unmanaged)
{
Append(", new()");
}
AppendLine();
if (this.settings.BlankLine.Constraint)
{
AppendLine();
}
}