private void ModifyMethod(TypeDefinition targetType, MethodDefinition yourMethod,
MemberActionAttribute memberAction, MethodDefinition targetMethod)
{
Log_modifying_member("method", yourMethod);
var insertAttribute = yourMethod.GetCustomAttribute<DuplicatesBodyAttribute>();
var bodySource = insertAttribute == null ? yourMethod : GetBodySource(targetType, yourMethod, insertAttribute);
ModificationScope scope = memberAction.Scope;
if (scope.HasFlag(AdvancedModificationScope.ExplicitOverrides)) {
targetMethod.Overrides.Clear();
foreach (var explicitOverride in yourMethod.Overrides) {
targetMethod.Overrides.Add(FixMethodReference(explicitOverride));
}
}
var attrFilter = AttrFilter(scope);
CopyCustomAttributes(targetMethod, yourMethod, attrFilter);
CopyCustomAttributes(targetMethod.MethodReturnType, yourMethod.MethodReturnType, attrFilter);
for (int i = 0; i < yourMethod.Parameters.Count; i++) {
CopyCustomAttributes(targetMethod.Parameters[i], yourMethod.Parameters[i], attrFilter);
}
for (int i = 0; i < yourMethod.GenericParameters.Count; i++) {
CopyCustomAttributes(targetMethod.GenericParameters[i], yourMethod.GenericParameters[i], attrFilter);
}
if ((scope & ModificationScope.Accessibility) != 0) {
targetMethod.SetAccessibility(yourMethod.GetAccessbility());
}
if (scope.HasFlag(ModificationScope.Body)) {
if (yourMethod.Body != null) {
TransferMethodBody(targetMethod, bodySource);
} else {
//this happens in abstract methods and some others.
targetMethod.Body = null;
}
}
if (EmbedHistory) {
targetMethod.AddPatchedByMemberAttribute(yourMethod);
}
var toggleAttributesAttr = yourMethod.GetCustomAttribute<ToggleMethodAttributes>();
var toggleValue = toggleAttributesAttr?.Attributes ?? 0;
targetMethod.Attributes ^= (MethodAttributes) toggleValue;
}
/// <summary>
/// Patches the target method by overwriting some aspects with your method, such as: its body and accessibility. Also allows adding custom attributes.
/// </summary>
/// <param name="targetMethod">The target method.</param>
/// <param name="yourMethod">Your method.</param>
/// <param name="scope">The extent to which to modify the method..</param>
private void ModifyMethod(MethodDefinition targetMethod, MethodDefinition yourMethod, ModificationScope scope, bool isNew)
{
if ((scope & ModificationScope.Accessibility) != 0) {
targetMethod.SetAccessibility(yourMethod.GetAccessbility());
}
if (isNew) {
//There is absolutely no point allowing you to modify the explicit overrides of existing methods.
//I thought of adding an enum value, but it will just cause confusion.
targetMethod.Overrides.Clear();
foreach (var explicitOverride in yourMethod.Overrides) {
targetMethod.Overrides.Add(FixMethodReference(explicitOverride));
}
}
if ((scope & ModificationScope.CustomAttributes) != 0) {
CopyCustomAttributes(targetMethod, yourMethod);
CopyCustomAttributes(targetMethod.MethodReturnType, yourMethod.MethodReturnType);
for (int i = 0; i < yourMethod.Parameters.Count; i++) {
CopyCustomAttributes(targetMethod.Parameters[i], yourMethod.Parameters[i]);
}
for (int i = 0; i < yourMethod.GenericParameters.Count; i++) {
CopyCustomAttributes(targetMethod.GenericParameters[i], yourMethod.GenericParameters[i]);
}
}
if ((scope & ModificationScope.Body) == 0) {
return;
}
if (yourMethod.Body != null) {
TransferMethodBody(targetMethod, yourMethod);
} else {
//this happens in abstract methods and some others.
targetMethod.Body = null;
}
}
