OpCodeHandlerInfo FindHandler(SigState execSigState) {
foreach (var handler in handlerInfos) {
if (Matches(handler.ExecSig, execSigState))
return handler;
}
return null;
}
OpCodeHandlerInfo FindHandler(SigState execSigState)
{
foreach (var handler in handlerInfos)
{
if (Matches(handler.ExecSig, execSigState))
{
return(handler);
}
}
return(null);
}
bool Matches(MethodSigInfo handlerSig, SigState sigState)
{
stack.Clear();
sigIndexToHandlerIndex.Clear();
handlerIndexToSigIndex.Clear();
var handlerInfos = handlerSig.BlockInfos;
var sigInfos = sigState.SigInfo.BlockInfos;
stack.Push(new MatchInfo(0, 0));
while (stack.Count > 0)
{
var info = stack.Pop();
int handlerIndex, sigIndex;
bool hasVisitedHandler = handlerIndexToSigIndex.TryGetValue(info.HandlerIndex, out sigIndex);
bool hasVisitedSig = sigIndexToHandlerIndex.TryGetValue(info.SigIndex, out handlerIndex);
if (hasVisitedHandler != hasVisitedSig)
{
return(false);
}
if (hasVisitedHandler)
{
if (handlerIndex != info.HandlerIndex || sigIndex != info.SigIndex)
{
return(false);
}
continue;
}
handlerIndexToSigIndex[info.HandlerIndex] = info.SigIndex;
sigIndexToHandlerIndex[info.SigIndex] = info.HandlerIndex;
var handlerBlock = handlerInfos[info.HandlerIndex];
var sigBlock = sigInfos[info.SigIndex];
if (!handlerBlock.Equals(sigBlock))
{
return(false);
}
for (int i = 0; i < handlerBlock.Targets.Count; i++)
{
int handlerTargetIndex = handlerBlock.Targets[i];
int sigTargetIndex = sigBlock.Targets[i];
stack.Push(new MatchInfo(handlerTargetIndex, sigTargetIndex));
}
}
return(true);
}
bool Matches(MethodSigInfo handlerSig, SigState sigState) {
stack.Clear();
sigIndexToHandlerIndex.Clear();
handlerIndexToSigIndex.Clear();
var handlerInfos = handlerSig.BlockInfos;
var sigInfos = sigState.SigInfo.BlockInfos;
stack.Push(new MatchInfo(0, 0));
while (stack.Count > 0) {
var info = stack.Pop();
int handlerIndex, sigIndex;
bool hasVisitedHandler = handlerIndexToSigIndex.TryGetValue(info.HandlerIndex, out sigIndex);
bool hasVisitedSig = sigIndexToHandlerIndex.TryGetValue(info.SigIndex, out handlerIndex);
if (hasVisitedHandler != hasVisitedSig)
return false;
if (hasVisitedHandler) {
if (handlerIndex != info.HandlerIndex || sigIndex != info.SigIndex)
return false;
continue;
}
handlerIndexToSigIndex[info.HandlerIndex] = info.SigIndex;
sigIndexToHandlerIndex[info.SigIndex] = info.HandlerIndex;
var handlerBlock = handlerInfos[info.HandlerIndex];
var sigBlock = sigInfos[info.SigIndex];
if (!handlerBlock.Equals(sigBlock))
return false;
for (int i = 0; i < handlerBlock.Targets.Count; i++) {
int handlerTargetIndex = handlerBlock.Targets[i];
int sigTargetIndex = sigBlock.Targets[i];
stack.Push(new MatchInfo(handlerTargetIndex, sigTargetIndex));
}
}
return true;
}
