/// <summary>
/// Gets the return type for the unmanaged signature that represents the provided <paramref name="info"/>.
/// </summary>
/// <param name="generator">The marshalling generator for this <paramref name="info"/></param>
/// <param name="info">Object to marshal</param>
public static TypeSyntax AsReturnType(this IMarshallingGenerator generator, TypePositionInfo info)
{
return(generator.GetNativeSignatureBehavior(info) switch
{
SignatureBehavior.ManagedTypeAndAttributes => info.ManagedType.Syntax,
SignatureBehavior.NativeType => generator.AsNativeType(info),
SignatureBehavior.PointerToNativeType => PointerType(generator.AsNativeType(info)),
_ => throw new InvalidOperationException()
});
/// <summary>
/// Gets any attributes that should be applied to the return type for this <paramref name="info"/>.
/// </summary>
/// <param name="generator">The marshalling generator for this <paramref name="info"/></param>
/// <param name="info">Object to marshal</param>
/// <returns>Attributes for the return type for this <paramref name="info"/>, or <c>null</c> if no attributes should be added.</returns>
public static AttributeListSyntax? GenerateAttributesForReturnType(this IMarshallingGenerator generator, TypePositionInfo info)
{
if (generator.GetNativeSignatureBehavior(info) != SignatureBehavior.ManagedTypeAndAttributes)
{
return null;
}
if (!TryRehydrateMarshalAsAttribute(info, out AttributeSyntax marshalAsAttribute))
{
return null;
}
return AttributeList(SingletonSeparatedList(marshalAsAttribute));
}
/// <summary>
/// Gets a parameter for the unmanaged signature that represents the provided <paramref name="info"/>.
/// </summary>
/// <param name="generator">The marshalling generator for this <paramref name="info"/></param>
/// <param name="info">Object to marshal</param>
public static ParameterSyntax AsParameter(this IMarshallingGenerator generator, TypePositionInfo info)
{
SignatureBehavior behavior = generator.GetNativeSignatureBehavior(info);
if (behavior == SignatureBehavior.ManagedTypeAndAttributes)
{
return GenerateForwardingParameter(info);
}
return Parameter(Identifier(info.InstanceIdentifier))
.WithType(behavior switch
{
SignatureBehavior.NativeType => generator.AsNativeType(info),
SignatureBehavior.PointerToNativeType => PointerType(generator.AsNativeType(info)),
_ => throw new InvalidOperationException()
});
public SignatureBehavior GetNativeSignatureBehavior(TypePositionInfo info)
{
return(_manualMarshallingGenerator.GetNativeSignatureBehavior(info));
}
public SignatureBehavior GetNativeSignatureBehavior(TypePositionInfo info) => _inner.GetNativeSignatureBehavior(info);
