private void QueryCallVirtImpl(
TypeMethodPair entryPair,
out TypeMethodPair implPair)
{
for (; ;)
{
// 尝试重定向入口到新建槽方法
if (NewSlotEntryMap.TryGetValue(entryPair.Item2, out var newSlotPair))
{
entryPair = newSlotPair;
}
QueryEntryMap(entryPair, out implPair);
if (NewSlotEntryMap.TryGetValue(implPair.Item2, out newSlotPair) &&
!entryPair.Equals(newSlotPair))
{
entryPair = newSlotPair;
continue;
}
if (SameTypeReplaceMap.TryGetValue(implPair.Item2, out var repPair))
{
entryPair = repPair;
}
else
{
break;
}
}
}
private void QueryEntryMap(
TypeMethodPair entryPair,
out TypeMethodPair implPair)
{
// 查询直接绑定
if (EntryMap.TryGetValue(entryPair, out var impl))
{
implPair = impl.MethodPair;
return;
}
// 遍历查询协逆变绑定
TypeX entryTyX = entryPair.Item1;
if (entryTyX.HasVariances)
{
MethodDef entryMetDef = entryPair.Item2;
TypeMethodPair lastImpl = null;
uint lastLevel = 0;
foreach (var kv in EntryMap)
{
TypeX keyTyX = kv.Key.Item1;
MethodDef keyMetDef = kv.Key.Item2;
if (keyMetDef == entryMetDef &&
keyTyX.HasVariances &&
entryTyX.IsDerivedType(keyTyX))
{
TypeMethodPair currImpl = kv.Value.MethodPair;
uint currLevel = kv.Value.Level;
if (lastImpl == null || lastLevel < currLevel)
{
lastImpl = currImpl;
lastLevel = currLevel;
}
}
}
if (lastImpl != null)
{
implPair = lastImpl;
return;
}
}
throw new TypeLoadException(
string.Format("Virtual method can't resolve in type {0}: {1} -> {2}",
Name,
entryPair.Item1,
entryPair.Item2.FullName));
}
public void QueryCallVirt(
TypeX entryTyX,
MethodDef entryDef,
out TypeX implTyX,
out MethodDef implDef)
{
var entryPair = new TypeMethodPair(entryTyX, entryDef);
if (!CachedMap.TryGetValue(entryPair, out var implPair))
{
QueryCallVirtImpl(entryPair, out implPair);
CachedMap[entryPair] = implPair;
}
implTyX = implPair.Item1;
implDef = implPair.Item2;
}
public TypeMethodImpl(TableMethodImpl tbImpl)
{
MethodPair = new TypeMethodPair(tbImpl.MethodPair.Item1.GetTypeX(), tbImpl.MethodPair.Item2);
Level = tbImpl.Level;
}
private void QueryEntryMap(
TypeManager typeMgr,
TypeMethodPair entryPair,
out TypeMethodPair implPair)
{
// 查询直接绑定
if (EntryMap.TryGetValue(entryPair, out var impl))
{
implPair = impl.MethodPair;
return;
}
// 遍历查询协逆变绑定
TypeX entryTyX = entryPair.Item1;
if (entryTyX.HasVariances)
{
MethodDef entryMetDef = entryPair.Item2;
TypeMethodPair lastImpl = null;
uint lastLevel = 0;
foreach (var kv in EntryMap)
{
TypeX keyTyX = kv.Key.Item1;
MethodDef keyMetDef = kv.Key.Item2;
if (keyMetDef == entryMetDef &&
keyTyX.HasVariances &&
entryTyX.IsDerivedType(keyTyX))
{
TypeMethodPair currImpl = kv.Value.MethodPair;
uint currLevel = kv.Value.Level;
if (lastImpl == null || lastLevel < currLevel)
{
lastImpl = currImpl;
lastLevel = currLevel;
}
}
}
if (lastImpl != null)
{
implPair = lastImpl;
return;
}
}
// IList<T> 和 T[] 的赋值
if (IsSZArray)
{
string fullName = entryTyX.Def.FullName;
Debug.Assert(
fullName == "System.Collections.Generic.IList`1" ||
fullName == "System.Collections.Generic.ICollection`1");
MethodDef entryMetDef = entryPair.Item2;
TypeMethodPair lastImpl = null;
uint lastLevel = 0;
foreach (var kv in EntryMap)
{
TypeX keyTyX = kv.Key.Item1;
MethodDef keyMetDef = kv.Key.Item2;
if (keyMetDef == entryMetDef)
{
Debug.Assert(entryTyX.GenArgs.Count == keyTyX.GenArgs.Count);
var baseSig = entryTyX.GenArgs[0];
var derivedSig = keyTyX.GenArgs[0];
if (typeMgr.IsDerivedType(baseSig, derivedSig))
{
TypeMethodPair currImpl = kv.Value.MethodPair;
uint currLevel = kv.Value.Level;
if (lastImpl == null || lastLevel < currLevel)
{
lastImpl = currImpl;
lastLevel = currLevel;
}
}
}
}
if (lastImpl != null)
{
implPair = lastImpl;
return;
}
}
throw new TypeLoadException(
string.Format("Virtual method can't resolve in type {0}: {1} -> {2}",
Name,
entryPair.Item1,
entryPair.Item2.FullName));
}