/// <inheritdoc />
public override IntrospectiveMethodInfo GeneratePassthroughDefinition(PipelineWorkUnit <IntrospectiveMethodInfo> workUnit)
{
if (!workUnit.Definition.ReturnType.GenericTypeArguments[0].IsValueType)
{
// Span<byte> is used because unbound generics are not allowed inside a nameof, and it still results as just 'Span'
throw new NotSupportedException($"Method is not a {nameof(ValueType)} and cannot be marshaled as a {nameof(Span<byte>)}. Marshalling {nameof(Span<byte>)}" +
$"requires the marshaled type T in {nameof(Span<byte>)}<T> to be a {nameof(ValueType)}");
}
var definition = workUnit.Definition;
Type newReturnType = definition.ReturnType.GenericTypeArguments[0].MakePointerType();
/* TODO? Add marshaling for Span<> params */
Type[] parametersTypes = definition.ParameterTypes.ToArray();
MethodBuilder passthroughMethod = TargetType.DefineMethod
(
$"{workUnit.GetUniqueBaseMemberName()}_wrapped",
MethodAttributes.Private | MethodAttributes.Virtual | MethodAttributes.HideBySig,
CallingConventions.Standard,
newReturnType,
parametersTypes
);
passthroughMethod.ApplyCustomAttributesFrom(definition, newReturnType, parametersTypes);
return(new IntrospectiveMethodInfo
(
passthroughMethod,
newReturnType,
parametersTypes,
definition.MetadataType,
definition
));
}
/// <inheritdoc />
public override IntrospectiveMethodInfo GeneratePassthroughDefinition(PipelineWorkUnit <IntrospectiveMethodInfo> workUnit)
{
var returnType = workUnit.Definition.ReturnType;
Type newReturnType;
var definition = workUnit.Definition;
if (IsSpanType(returnType))
{
var genericType = returnType.GenericTypeArguments[0];
if (!genericType.IsUnmanaged())
{
throw new NotSupportedException($"Method return type must be blittable.");
}
newReturnType = genericType.MakePointerType();
}
else
{
newReturnType = returnType;
}
var parametersTypes = definition.ParameterTypes.ToArray();
for (int i = 0; i < parametersTypes.Length; ++i)
{
var paramType = parametersTypes[i];
if (IsSpanType(paramType))
{
var genericParam = paramType.GenericTypeArguments[0];
if (genericParam.IsGenericType)
{
throw new NotSupportedException("Generic type found as Span generic argument");
}
if (!genericParam.IsUnmanaged())
{
throw new NotSupportedException("Reference or value type containing references found in Span<T> or ReadOnlySpan<T> generic parameter.");
}
parametersTypes[i] = genericParam.MakePointerType(); // genercParam.MakePointerType();
}
}
MethodBuilder passthroughMethod = TargetType.DefineMethod
(
$"{workUnit.GetUniqueBaseMemberName()}_wrapped",
MethodAttributes.Private | MethodAttributes.Virtual | MethodAttributes.HideBySig,
CallingConventions.Standard,
newReturnType,
parametersTypes
);
passthroughMethod.ApplyCustomAttributesFrom(definition, newReturnType, parametersTypes);
return(new IntrospectiveMethodInfo
(
passthroughMethod,
newReturnType,
parametersTypes,
definition.MetadataType,
definition
));
}