protected virtual MethodDesc ResolveVirtualMethod(MethodDesc declMethod, DefType implType)
{
MethodDesc impl;
if (declMethod.OwningType.IsInterface)
{
impl = implType.ResolveInterfaceMethodTarget(declMethod);
if (impl != null)
{
impl = implType.FindVirtualFunctionTargetMethodOnObjectType(impl);
}
}
else
{
impl = implType.FindVirtualFunctionTargetMethodOnObjectType(declMethod);
if (impl != null && (impl != declMethod))
{
MethodDesc slotDefiningMethodImpl = MetadataVirtualMethodAlgorithm.FindSlotDefiningMethodForVirtualMethod(impl);
MethodDesc slotDefiningMethodDecl = MetadataVirtualMethodAlgorithm.FindSlotDefiningMethodForVirtualMethod(declMethod);
if (slotDefiningMethodImpl != slotDefiningMethodDecl)
{
// We cannot resolve virtual method in case the impl is a different slot from the declMethod
impl = null;
}
}
}
return(impl);
}
protected virtual MethodDesc ResolveVirtualMethod(MethodDesc declMethod, DefType implType)
{
// Quick check: if decl matches impl, we're done.
if (declMethod.OwningType == implType)
{
return(declMethod);
}
MethodDesc impl;
if (declMethod.OwningType.IsInterface)
{
impl = implType.ResolveInterfaceMethodTarget(declMethod);
if (impl != null)
{
impl = implType.FindVirtualFunctionTargetMethodOnObjectType(impl);
}
}
else
{
impl = implType.FindVirtualFunctionTargetMethodOnObjectType(declMethod);
}
return(impl);
}
protected virtual MethodDesc ResolveVirtualMethod(MethodDesc declMethod, DefType implType)
{
MethodDesc impl;
if (declMethod.OwningType.IsInterface)
{
if (declMethod.OwningType.IsCanonicalSubtype(CanonicalFormKind.Any) || implType.IsCanonicalSubtype(CanonicalFormKind.Any))
{
DefType[] implTypeRuntimeInterfaces = implType.RuntimeInterfaces;
int canonicallyMatchingInterfacesFound = 0;
DefType canonicalInterfaceType = (DefType)declMethod.OwningType.ConvertToCanonForm(CanonicalFormKind.Specific);
for (int i = 0; i < implTypeRuntimeInterfaces.Length; i++)
{
DefType runtimeInterface = implTypeRuntimeInterfaces[i];
if (canonicalInterfaceType.HasSameTypeDefinition(runtimeInterface) &&
runtimeInterface.ConvertToCanonForm(CanonicalFormKind.Specific) == canonicalInterfaceType)
{
canonicallyMatchingInterfacesFound++;
if (canonicallyMatchingInterfacesFound > 1)
{
// We cannot resolve the interface as we don't know with exact enough detail which interface
// of multiple possible interfaces is being called.
return(null);
}
}
}
}
impl = implType.ResolveInterfaceMethodTarget(declMethod);
if (impl != null)
{
impl = implType.FindVirtualFunctionTargetMethodOnObjectType(impl);
}
}
else
{
impl = implType.FindVirtualFunctionTargetMethodOnObjectType(declMethod);
if (impl != null && (impl != declMethod))
{
MethodDesc slotDefiningMethodImpl = MetadataVirtualMethodAlgorithm.FindSlotDefiningMethodForVirtualMethod(impl);
MethodDesc slotDefiningMethodDecl = MetadataVirtualMethodAlgorithm.FindSlotDefiningMethodForVirtualMethod(declMethod);
if (slotDefiningMethodImpl != slotDefiningMethodDecl)
{
// We cannot resolve virtual method in case the impl is a different slot from the declMethod
impl = null;
}
}
}
return(impl);
}
protected virtual MethodDesc ResolveVirtualMethod(MethodDesc declMethod, DefType implType)
{
MethodDesc impl;
if (declMethod.OwningType.IsInterface)
{
impl = implType.ResolveInterfaceMethodTarget(declMethod);
if (impl != null)
{
impl = implType.FindVirtualFunctionTargetMethodOnObjectType(impl);
}
}
else
{
impl = implType.FindVirtualFunctionTargetMethodOnObjectType(declMethod);
}
return(impl);
}
