private static IEnumerable <CodeInstruction> Transpiler(MethodBase __originalMethod,
IEnumerable <CodeInstruction> instructions)
{
var inst = PatchProcessor.GetOriginalInstructions(__originalMethod);
var modInstList = instructions.ToList();
var insts = new Myers <CodeInstruction>(inst.ToArray(), modInstList.ToArray(), methComparer);
insts.Compute();
var key = Utility.GetMethodKey(__originalMethod as MethodInfo);
var index = MethodInfoCache.AddMethod(key, __originalMethod as MethodInfo);
foreach (var thing in insts.changeSet)
{
// We only want added methods
if (thing.change != ChangeType.Added)
{
continue;
}
if (!InternalMethodUtility.IsFunctionCall(thing.value.opcode) ||
!(thing.value.operand is MethodInfo meth))
{
continue;
}
// swap our instruction
var replaceInstruction = MethodTransplanting.ReplaceMethodInstruction(
thing.value,
key,
typeof(H_HarmonyTranspilersInternalMethods),
index);
// Find the place it was in our method, and replace the instruction (Optimisation Opportunity to improve this)
for (var i = 0; i < modInstList.Count; i++)
{
var instruction = modInstList[i];
if (!InternalMethodUtility.IsFunctionCall(instruction.opcode))
{
continue;
}
if (!(instruction.operand is MethodInfo info) || info.Name != meth.Name)
{
continue;
}
if (instruction != replaceInstruction)
{
modInstList[i] = replaceInstruction;
}
break;
}
}
return(modInstList);
}
// Functions primarily to check if two function call CodeInstructions are the same.
public override bool Equals(CodeInstruction b1, CodeInstruction b2)
{
if (b1.opcode != b2.opcode)
{
return(false);
}
if (InternalMethodUtility.IsFunctionCall(b1.opcode))
{
try
{
return(((MethodInfo)b1.operand).Name == ((MethodInfo)b2.operand).Name);
}
catch { }
}
return(b1.operand == b2.operand);
}