private FieldReference ResolveStateClassField(TypeReference role)
{
var stateTypeDefinition = role.ResolveStateClass();
var stateTypeReference = new MemberResolver(role).ResolveMatchingType(stateTypeDefinition);
var fieldDefinition = _targetType.Fields.
SingleOrDefault(fd => TypeMatcher.IsMatch(fd.FieldType, stateTypeReference));
if (fieldDefinition == null) return null; // TODO: this is because the role was already implemented in a base class; it should be checked before, possibly in the conflict resolution stage
return new FieldReference(
fieldDefinition.Name,
fieldDefinition.FieldType) {
DeclaringType = fieldDefinition.DeclaringType.ResolveGenericArguments()
};
}
public MemberFinder(TypeReference searchType)
{
if (searchType == null) throw new ArgumentNullException("searchType");
SearchType = searchType;
_resolver = new MemberResolver(SearchType);
ResolveMembers();
}
private IEnumerable<MethodDefinition> ResolveVirtualBaseMethodsDeclarations(IEnumerable<ClassMember> baseMethodsSet)
{
var definitions = new List<MethodDefinition>();
foreach (var baseMethod in baseMethodsSet) {
var method = (MethodDefinition)baseMethod.Definition;
var definition = new MemberResolver(baseMethod.Class).
ResolveMethodDefinition(
method,
NameProvider.GetVirtualBaseMethodName(baseMethod.Class.Name, method.Name),
MethodAttributes.Public | MethodAttributes.HideBySig | MethodAttributes.Abstract | MethodAttributes.Virtual | MethodAttributes.NewSlot);
definitions.Add(definition);
}
return definitions;
}
private static void RetrieveRoles(this TypeReference self, Dictionary<TypeReference, int> roleCollector, int sortOrder = 1)
{
// Note: the roles from the base types are already implemented, so there's no need to reimplement them
var directRoles = self.RetrieveDirectRoles();
// get the roles from the direct roles
directRoles.ForEach(role => {
if (!(self is TypeDefinition)) {
role = new MemberResolver(self).ResolveConstituentType(role);
}
var roleInCollector = roleCollector.Keys.SingleOrDefault(type => TypeMatcher.IsMatch(type, role));
if (roleInCollector != null) {
if (roleCollector[roleInCollector] < sortOrder) {
roleCollector[roleInCollector] = sortOrder;
role.RetrieveRoles(roleCollector, sortOrder + 1); // have to recurse to adjust the parents' sort order
}
}
else {
roleCollector.Add(role, sortOrder);
role.RetrieveRoles(roleCollector, sortOrder + 1);
}
});
}
private void ImplementBaseMethod(RoleCompositionMember typeMember, IEnumerable<RoleCompositionMember> overrides)
{
Tracer.TraceVerbose("Implement base method: {0}", typeMember.Definition);
string baseMethodName = NameProvider.GetOriginalBaseMethodName(typeMember.Definition.Name);
ClassMember baseMember = null;
var currentType = TargetType.BaseType;
do {
var finder = new MemberFinder(currentType.Resolve());
var foundBase = finder.FindMatchFor(typeMember.Definition, baseMethodName);
if (foundBase != null) {
baseMember = new ClassMember(currentType, foundBase, isInherited: true);
break;
}
currentType = currentType.Resolve().BaseType;
} while (currentType != null);
if (baseMember == null) throw new InvalidOperationException();
// TODO: refactor with AdjustSupercedingMember!
var method = (MethodDefinition)typeMember.Definition;
var targetMethod = new MemberResolver(baseMember.Class, Module).ResolveMethodDefinition(method, method.Name, MethodAttributes.Private | MethodAttributes.Virtual | MethodAttributes.NewSlot | MethodAttributes.HideBySig);
CreateCodeToCallBaseClassMethod(targetMethod, baseMember);
TargetType.Methods.Add(targetMethod);
AddOverrides(targetMethod, overrides);
}
private MethodDefinition AdjustSupercedingMember(ClassMember classMember, IEnumerable<RoleCompositionMember> overrides)
{
if (overrides.Count() == 0) return null;
var member = classMember.Definition;
var method = member as MethodDefinition;
if (method == null) return null;
Tracer.TraceVerbose("Adjust superceding member: {0}", classMember.Definition);
MethodDefinition targetMethod = null;
if (!classMember.IsInherited) {
targetMethod = method;
}
else {
// if it's in a base class, create a new method in the target class that calls the base class method
targetMethod = new MemberResolver(classMember.Class, Module).ResolveMethodDefinition(method);
if (method.IsVirtual && !method.IsFinal) {
targetMethod.IsNewSlot = false; // the derived method overrides the base method
}
if (!method.IsAbstract) {
CreateCodeToCallBaseClassMethod(targetMethod, classMember);
}
TargetType.Methods.Add(targetMethod);
}
// add the corresponding overrides to the method
AddOverrides(targetMethod, overrides);
if (!(method.IsVirtual || method.IsAbstract)) {
// to support polymorphism with regards to the role interface, mark as virtual sealed
targetMethod.Attributes |= MethodAttributes.Virtual | MethodAttributes.NewSlot | MethodAttributes.Final;
}
return targetMethod;
}