/// <summary>
/// Gets the invoke method for a delegate type.
/// </summary>
/// <remarks>
/// Returns null if the type is not a delegate type; or if the invoke method could not be found.
/// </remarks>
public static IMethod GetDelegateInvokeMethod(this IType type)
{
if (type == null)
{
throw new ArgumentNullException("type");
}
ITypeDefinition def = type.GetDefinition();
if (def != null && def.ClassType == ClassType.Delegate)
{
foreach (IMethod method in def.Methods)
{
if (method.Name == "Invoke")
{
ParameterizedType pt = type as ParameterizedType;
if (pt != null)
{
SpecializedMethod m = new SpecializedMethod(method);
m.SetDeclaringType(pt);
var substitution = pt.GetSubstitution();
m.SubstituteTypes(t => new SubstitutionTypeReference(t, substitution));
return(m);
}
return(method);
}
}
}
return(null);
}
public IEnumerable <IMethod> GetConstructors(ITypeResolveContext context, Predicate <IMethod> filter = null)
{
Substitution substitution = new Substitution(typeArguments);
List <IMethod> methods = genericType.GetConstructors(context, filter).ToList();
for (int i = 0; i < methods.Count; i++)
{
SpecializedMethod m = new SpecializedMethod(methods[i]);
m.SetDeclaringType(this);
m.SubstituteTypes(context, substitution);
methods[i] = m;
}
return(methods);
}
public IEnumerable <IMethod> GetMethods(ITypeResolveContext context, Predicate <IMethod> filter = null)
{
Substitution substitution = new Substitution(typeArguments);
Func <ITypeReference, ITypeReference> substitutionFunc = t => t.Resolve(context).AcceptVisitor(substitution);
List <IMethod> methods = genericType.GetMethods(context, filter).ToList();
for (int i = 0; i < methods.Count; i++)
{
SpecializedMethod m = new SpecializedMethod(methods[i]);
m.SetDeclaringType(this);
m.SubstituteTypes(substitutionFunc);
methods[i] = m;
}
return(methods);
}
IMember Specialize(IMember member, Func <ITypeReference, ITypeReference> substitution)
{
IMethod method = member as IMethod;
if (method != null)
{
SpecializedMethod m = new SpecializedMethod(method);
m.SetDeclaringType(this);
m.SubstituteTypes(substitution);
return(m);
}
IProperty property = member as IProperty;
if (property != null)
{
SpecializedProperty p = new SpecializedProperty(property);
p.SetDeclaringType(this);
p.SubstituteTypes(substitution);
return(p);
}
IField field = member as IField;
if (field != null)
{
SpecializedField f = new SpecializedField(field);
f.SetDeclaringType(this);
f.ReturnType = substitution(f.ReturnType);
return(f);
}
IEvent ev = member as IEvent;
if (ev != null)
{
SpecializedEvent e = new SpecializedEvent(ev);
e.SetDeclaringType(this);
e.ReturnType = substitution(e.ReturnType);
return(e);
}
throw new ArgumentException("Unknown member");
}
