internal static void DoDetours()
{
// provide some info
Verse.Log.Message("FluffyLib :: Detours :: Scanning mod assemblies for detour requests...");
// loop over all methods and properties in all mod's assemblies
foreach (ModContentPack mod in LoadedModManager.RunningMods)
{
#if DEBUG_SPAMMY_DETOURS
Verse.Log.Message(mod.Name);
#endif
foreach (Assembly assembly in mod.assemblies.loadedAssemblies)
{
#if DEBUG_SPAMMY_DETOURS
Verse.Log.Message("\t" + assembly.FullName);
#endif
foreach (Type type in assembly.GetTypes())
{
#if DEBUG_SPAMMY_DETOURS
Verse.Log.Message("\t\t" + type.FullName);
#endif
foreach (MethodInfo methodInfo in type.GetMethods(AllBindingFlags))
{
#if DEBUG_SPAMMY_DETOURS
Verse.Log.Message("\t\t\t" + methodInfo.Name);
#endif
if (methodInfo.HasAttribute <DetourMethodAttribute>())
{
#if DEBUG_SPAMMY_DETOURS
Verse.Log.Message("\t\t\t\t" + "DING!");
#endif
// if attribute is defined, do the detour
DetourMethodAttribute detourAttribute = methodInfo.GetCustomAttributes(typeof(DetourMethodAttribute), false).First() as DetourMethodAttribute;
HandleDetour(detourAttribute, methodInfo);
}
}
foreach (PropertyInfo propertyInfo in type.GetProperties((AllBindingFlags)))
{
#if DEBUG_SPAMMY_DETOURS
Verse.Log.Message("\t\t\t" + propertyInfo.Name);
#endif
if (propertyInfo.HasAttribute <DetourPropertyAttribute>())
{
#if DEBUG_SPAMMY_DETOURS
Verse.Log.Message("\t\t\t\t" + "DING!");
#endif
// if attribute is defined, do the detour
DetourPropertyAttribute detourAttribute = propertyInfo.GetCustomAttributes(typeof(DetourPropertyAttribute), false).First() as DetourPropertyAttribute;
HandleDetour(detourAttribute, propertyInfo);
}
}
}
}
}
#if DEBUG
DetourTest.RunTests();
#endif
}
private static MethodInfo GetMatchingMethodInfo(DetourMethodAttribute sourceAttribute, MethodInfo targetInfo)
{
// we should only ever get here in case the attribute was not defined with a sourceMethodInfo, but let's check just in case.
if (sourceAttribute.WasSetByMethodInfo)
{
return(sourceAttribute.sourceMethodInfo);
}
// aight, let's search by name
MethodInfo[] candidates =
sourceAttribute.sourceType.GetMethods(AllBindingFlags)
.Where(mi => mi.Name == sourceAttribute.sourceMethodName).ToArray();
// if we only get one result, we've got our method info - if the length is zero, the method doesn't exist.
if (candidates.Length == 0)
{
return(null);
}
if (candidates.Length == 1)
{
return(candidates.First());
}
// this is where things get slightly complicated, we'll have to search by parameters.
candidates = candidates.Where(mi =>
mi.ReturnType == targetInfo.ReturnType &&
mi.GetParameters()
.Select(pi => pi.ParameterType)
.SequenceEqual(targetInfo.GetParameters().Select(pi => pi.ParameterType)))
.ToArray();
// if we only get one result, we've got our method info - if the length is zero, the method doesn't exist.
if (candidates.Length == 0)
{
return(null);
}
if (candidates.Length == 1)
{
return(candidates.First());
}
// if we haven't returned anything by this point there were still multiple candidates. This is theoretically impossible,
// unless I missed something.
return(null);
}
private static void HandleDetour(DetourMethodAttribute sourceAttribute, MethodInfo targetInfo)
{
// we need to get the method info of the source (usually, vanilla) method.
// if it was specified in the attribute, this is easy. Otherwise, we'll have to do some digging.
MethodInfo sourceInfo = sourceAttribute.WasSetByMethodInfo
? sourceAttribute.sourceMethodInfo
: GetMatchingMethodInfo(sourceAttribute, targetInfo);
// make sure we've got what we wanted.
if (sourceInfo == null)
{
throw new NullReferenceException("sourceMethodInfo could not be found based on attribute");
}
if (targetInfo == null)
{
throw new ArgumentNullException(nameof(targetInfo));
}
// call the actual detour
TryDetourFromTo(sourceInfo, targetInfo);
}