/// <summary>
/// Creates a closed generic nullable type from the current <see cref="CodeTypeReference"/>.
/// </summary>
/// <param name="reference">The code type reference.</param>
/// <returns>A <see cref="Type"/> representation of the nullable type.</returns>
/// <exception cref="InvalidOperationException">Thrown if the code type reference does not represent a nullable type.</exception>
public static Type CloseNullableType(this CodeTypeReference reference)
{
if (!reference.IsNullableType())
{
throw new InvalidOperationException("The current code type reference is not a nullable type.");
}
Type valueType = Type.GetType(reference.TypeArguments[0].BaseType);
return(typeof(Nullable <>).MakeGenericType(valueType));
}
private static CodeTypeDeclaration GenerateCollectionType(CodeTypeReference entityType)
{
string entityTypeName = entityType.IsNullableType()
? "Nullable" + Type.GetType(entityType.TypeArguments[0].BaseType).Name
: entityType.BaseType;
string collectionTypeName = GetCollectionTypeName(entityTypeName);
CodeTypeDeclaration collectionType = new CodeTypeDeclaration(collectionTypeName);
CodeTypeReference baseType = new CodeTypeReference(typeof(Collection <>));
if (entityType.IsNullableType())
{
baseType.TypeArguments.Add(entityType.CloseNullableType());
}
else
{
baseType.TypeArguments.Add(entityType.BaseType);
}
collectionType.BaseTypes.Add(baseType);
return(collectionType);
}
public CodeTypeReference CreateCollectionType(CodeTypeReference entityType, ExtendedCodeDomTree code)
{
Debug.Assert(entityType != null, "Argument entity type could not be null.");
// Do not create a ByteCollection as this is not compatiable with base64Binary!
if (entityType.BaseType == typeof(byte).FullName)
{
return(entityType);
}
CodeTypeReference ctr = new CodeTypeReference(typeof(List <>));
if (entityType.IsNullableType())
{
ctr.TypeArguments.Add(entityType.CloseNullableType());
}
else
{
ctr.TypeArguments.Add(entityType.BaseType);
}
return(ctr);
}