public void HotPatch(string assemblyFilename)
{
Debug.LogFormat("Started hotpatching {0}", assemblyFilename);
var newAssembly = Cecil.AssemblyDefinition.ReadAssembly(assemblyFilename);
foreach (var method in IterateMethods(newAssembly))
{
int hashcode;
if (methodHashes.TryGetValue(method.FullName, out hashcode))
{
if (hashcode == GenBodyHashcode(method))
{
continue;
}
string oldBody = methodBodies[method.FullName];
string newBody = ConcatBody(method);
Debug.Log("Trying to hotpatch " + method.FullName);
var ourType = recompiler.FindType(method.DeclaringType);
if (ourType == null)
{
continue;
}
var patchField = ourType.GetField(method.GetHotpatchFieldName(), BindingFlags.Static | BindingFlags.NonPublic);
if (patchField == null)
{
Debug.LogWarningFormat("Cannot patch {0} - function is not hotpatchable", method.FullName);
continue;
}
Debug.Trace("Hotswapping {0}", method.FullName);
Debug.Trace("Method signature was: {0}, is: {1}", methodHashes[method.FullName], GenBodyHashcode(method));
Debug.Trace("Method body was:");
Debug.Trace(methodBodies[method.FullName]);
Debug.Trace("Method body is:");
Debug.Trace(ConcatBody(method));
try {
var dynmethod = recompiler.RecompileMethod(method);
if (dynmethod != null)
{
patchField.SetValue(null, dynmethod);
methodHashes[method.FullName] = GenBodyHashcode(method);
methodBodies[method.FullName] = ConcatBody(method);
}
}
catch (Exception e) {
Debug.LogWarningFormat("Failed to patch {0} - {1}. See full stacktrace in Temp/hotpatch.log.",
method.FullName, e.Message);
Debug.Trace(e.StackTrace);
}
}
}
}
public void LoadLocalAssembly(string assemblyFilename)
{
var currentAssembly = Cecil.AssemblyDefinition.ReadAssembly(assemblyFilename);
foreach (var method in IterateMethods(currentAssembly))
{
var lm = new LocalMethod();
lm.CurrentMethodDef = method;
lm.CurrentSwap = null;
lm.BodyString = ConcatBody(method);
lm.BodyHashCode = lm.BodyString.GetHashCode();
try {
var localType = recompiler.FindType(method.DeclaringType);
lm.Type = localType;
if (localType != null)
{
lm.Method = recompiler.FindMethod(localType, method);
}
localMethods[method.FullName] = lm;
Debug.Trace($"Loading method: {method.FullName}");
} catch (Exception e) {
Debug.Trace($"Failed to load method: {method.FullName}");
}
}
}
