public static FunctionPointerType FromSignature(MethodSignature <IType> signature, MetadataModule module)
{
IType returnType = signature.ReturnType;
bool returnIsRefReadOnly = false;
if (returnType is ModifiedType modReturn && modReturn.Modifier.IsKnownType(KnownAttribute.In))
{
returnType = modReturn.ElementType;
returnIsRefReadOnly = true;
}
var parameterTypes = ImmutableArray.CreateBuilder <IType>(signature.ParameterTypes.Length);
var parameterReferenceKinds = ImmutableArray.CreateBuilder <ReferenceKind>(signature.ParameterTypes.Length);
foreach (var p in signature.ParameterTypes)
{
IType paramType = p;
ReferenceKind kind = ReferenceKind.None;
if (p is ModifiedType modreq)
{
if (modreq.Modifier.IsKnownType(KnownAttribute.In))
{
kind = ReferenceKind.In;
paramType = modreq.ElementType;
}
else if (modreq.Modifier.IsKnownType(KnownAttribute.Out))
{
kind = ReferenceKind.Out;
paramType = modreq.ElementType;
}
}
if (paramType.Kind == TypeKind.ByReference)
{
if (kind == ReferenceKind.None)
{
kind = ReferenceKind.Ref;
}
}
else
{
kind = ReferenceKind.None;
}
parameterTypes.Add(paramType);
parameterReferenceKinds.Add(kind);
}
return(new FunctionPointerType(
module, signature.Header.CallingConvention,
returnType, returnIsRefReadOnly,
parameterTypes.MoveToImmutable(), parameterReferenceKinds.MoveToImmutable()));
}
public TypeProvider(MetadataModule module)
{
this.module = module;
this.compilation = module.Compilation;
}
public static FunctionPointerType FromSignature(MethodSignature <IType> signature, MetadataModule module)
{
IType returnType = signature.ReturnType;
bool returnIsRefReadOnly = false;
var customCallConvs = ImmutableArray.CreateBuilder <IType>();
while (returnType is ModifiedType modReturn)
{
if (modReturn.Modifier.IsKnownType(KnownAttribute.In))
{
returnType = modReturn.ElementType;
returnIsRefReadOnly = true;
}
else if (modReturn.Modifier.Name.StartsWith("CallConv", StringComparison.Ordinal) &&
modReturn.Modifier.Namespace == "System.Runtime.CompilerServices")
{
returnType = modReturn.ElementType;
customCallConvs.Add(modReturn.Modifier);
}
else
{
break;
}
}
var parameterTypes = ImmutableArray.CreateBuilder <IType>(signature.ParameterTypes.Length);
var parameterReferenceKinds = ImmutableArray.CreateBuilder <ReferenceKind>(signature.ParameterTypes.Length);
foreach (var p in signature.ParameterTypes)
{
IType paramType = p;
ReferenceKind kind = ReferenceKind.None;
if (p is ModifiedType modreq)
{
if (modreq.Modifier.IsKnownType(KnownAttribute.In))
{
kind = ReferenceKind.In;
paramType = modreq.ElementType;
}
else if (modreq.Modifier.IsKnownType(KnownAttribute.Out))
{
kind = ReferenceKind.Out;
paramType = modreq.ElementType;
}
}
if (paramType.Kind == TypeKind.ByReference)
{
if (kind == ReferenceKind.None)
{
kind = ReferenceKind.Ref;
}
}
else
{
kind = ReferenceKind.None;
}
parameterTypes.Add(paramType);
parameterReferenceKinds.Add(kind);
}
return(new FunctionPointerType(
module, signature.Header.CallingConvention, customCallConvs.ToImmutable(),
returnType, returnIsRefReadOnly,
parameterTypes.MoveToImmutable(), parameterReferenceKinds.MoveToImmutable()));
}