public IType VisitChildren(TypeVisitor visitor)
{
IType g = genericType.AcceptVisitor(visitor);
ITypeDefinition def = g as ITypeDefinition;
if (def == null)
{
return(g);
}
// Keep ta == null as long as no elements changed, allocate the array only if necessary.
IType[] ta = (g != genericType) ? new IType[typeArguments.Length] : null;
for (int i = 0; i < typeArguments.Length; i++)
{
IType r = typeArguments[i].AcceptVisitor(visitor);
if (r == null)
{
throw new NullReferenceException("TypeVisitor.Visit-method returned null");
}
if (ta == null && r != typeArguments[i])
{
// we found a difference, so we need to allocate the array
ta = new IType[typeArguments.Length];
for (int j = 0; j < i; j++)
{
ta[j] = typeArguments[j];
}
}
if (ta != null)
{
ta[i] = r;
}
}
if (def == genericType && ta == null)
{
return(this);
}
else
{
return(new ParameterizedType(def, ta ?? typeArguments));
}
}
public override IType VisitTypeDefinition(ITypeDefinition type)
{
return NullableType.Create(compilation, type.AcceptVisitor(typeParameterSubstitution));
}
