public static MethodBuilder OverrideMethod(this TypeBuilder source, MethodInfo parentMethod, Func<ILGenerator, ILGenerator> body, IDictionary<MethodInfo, MethodBuilder> map)
{
var derived = source.DefineMethod(
// that's an awesome idea but it hurts reflector and debuggability
// String.Format("{0}_{1}", parentMethod.Name, parentMethod.DeclaringType.ToShortString()),
parentMethod.Name,
MethodAttributes.Final | MethodAttributes.Public | MethodAttributes.Virtual,
parentMethod.ReturnType,
parentMethod.Args());
if (body != null) body(derived.il());
source.DefineMethodOverride(derived, parentMethod);
if (map != null) map[parentMethod] = derived;
return derived;
}
public static MethodBuilder DefineOverride(this TypeBuilder t, MethodInfo @base)
{
MethodAttributes fixt = 0;
var allAttrs = Enum.GetValues(typeof(MethodAttributes)).Cast<MethodAttributes>();
var validAttrs = allAttrs
.Where(a => a != MethodAttributes.Abstract)
.Where(a => a != MethodAttributes.NewSlot);
validAttrs.ForEach(a => fixt |= (a & @base.Attributes));
var @override = t.DefineMethod(
@base.Name,
fixt,
@base.ReturnType,
@base.Args());
return @override;
}
