protected virtual void InitializeGetEHInfo(void *pICorJitInfo)
{
void *pGetEHInfo;
pGetEHInfo = VTableHelpers.GetGetEHInfo(pICorJitInfo);
if (RuntimeEnvironment.IsClr45x)
{
pGetEHInfo = MarshalEx.ConvertCallingConvention(pGetEHInfo, CallingConvention.ThisCall, CallingConvention.StdCall);
}
_getEHInfo = MarshalEx.CreateDelegate <GetEHInfoDelegate>(pGetEHInfo);
}
private void EnsurePatched()
{
using (var unknownScope = Scope.Create(() => Marshal.GetIUnknownForObject(this), pUnknown => Marshal.Release(pUnknown)))
{
var pUnknown = unknownScope.Value;
using (var dispatchExScope = Scope.Create(() => UnknownHelpers.QueryInterface <IDispatchEx>(pUnknown), pDispatchEx => Marshal.Release(pDispatchEx)))
{
lock (VTablePatcher.PatchLock)
{
var pDispatchEx = dispatchExScope.Value;
var pVTable = Marshal.ReadIntPtr(pDispatchEx);
if (!patchMap.ContainsKey(pVTable))
{
var entry = new PatchEntry();
var origGetDispID = VTableHelpers.GetMethodDelegate <RawGetDispID>(pDispatchEx, 7);
entry.AddDelegate(VTableHelpers.SetMethodDelegate(pDispatchEx, 7, new RawGetDispID((IntPtr pThis, string name, DispatchNameFlags nameFlags, out int dispid) =>
{
try
{
return((Marshal.GetObjectForIUnknown(pThis) is DispatchExHostItem item) ? item.GetDispID(name, nameFlags, out dispid) : origGetDispID(pThis, name, nameFlags, out dispid));
}
catch (Exception exception)
{
dispid = SpecialDispIDs.Unknown;
return(exception.HResult);
}
})));
var origDeleteMemberByName = VTableHelpers.GetMethodDelegate <RawDeleteMemberByName>(pDispatchEx, 9);
entry.AddDelegate(VTableHelpers.SetMethodDelegate(pDispatchEx, 9, new RawDeleteMemberByName((pThis, name, nameFlags) =>
{
try
{
return((Marshal.GetObjectForIUnknown(pThis) is DispatchExHostItem item) ? item.DeleteMemberByName(name, nameFlags) : origDeleteMemberByName(pThis, name, nameFlags));
}
catch (Exception exception)
{
return(exception.HResult);
}
})));
var origDeleteMemberByDispID = VTableHelpers.GetMethodDelegate <RawDeleteMemberByDispID>(pDispatchEx, 10);
entry.AddDelegate(VTableHelpers.SetMethodDelegate(pDispatchEx, 10, new RawDeleteMemberByDispID((pThis, dispid) =>
{
try
{
return((Marshal.GetObjectForIUnknown(pThis) is DispatchExHostItem item) ? item.DeleteMemberByDispID(dispid) : origDeleteMemberByDispID(pThis, dispid));
}
catch (Exception exception)
{
return(exception.HResult);
}
})));
var origGetMemberProperties = VTableHelpers.GetMethodDelegate <RawGetMemberProperties>(pDispatchEx, 11);
entry.AddDelegate(VTableHelpers.SetMethodDelegate(pDispatchEx, 11, new RawGetMemberProperties((IntPtr pThis, int dispid, DispatchPropFlags fetchFlags, out DispatchPropFlags propFlags) =>
{
try
{
var item = Marshal.GetObjectForIUnknown(pThis) as DispatchExHostItem;
if (item == null)
{
return(origGetMemberProperties(pThis, dispid, fetchFlags, out propFlags));
}
var result = item.GetMemberProperties(dispid, fetchFlags, out propFlags);
if (result == HResult.DISP_E_MEMBERNOTFOUND)
{
return(origGetMemberProperties(pThis, dispid, fetchFlags, out propFlags));
}
return(result);
}
catch (Exception exception)
{
propFlags = 0;
return(exception.HResult);
}
})));
var origGetMemberName = VTableHelpers.GetMethodDelegate <RawGetMemberName>(pDispatchEx, 12);
entry.AddDelegate(VTableHelpers.SetMethodDelegate(pDispatchEx, 12, new RawGetMemberName((IntPtr pThis, int dispid, out string name) =>
{
try
{
return((Marshal.GetObjectForIUnknown(pThis) is DispatchExHostItem item) ? item.GetMemberName(dispid, out name) : origGetMemberName(pThis, dispid, out name));
}
catch (Exception exception)
{
name = null;
return(exception.HResult);
}
})));
var origGetNextDispID = VTableHelpers.GetMethodDelegate <RawGetNextDispID>(pDispatchEx, 13);
entry.AddDelegate(VTableHelpers.SetMethodDelegate(pDispatchEx, 13, new RawGetNextDispID((IntPtr pThis, DispatchEnumFlags enumFlags, int dispidCurrent, out int dispidNext) =>
{
try
{
return((Marshal.GetObjectForIUnknown(pThis) is DispatchExHostItem item) ? item.GetNextDispID(dispidCurrent, out dispidNext) : origGetNextDispID(pThis, enumFlags, dispidCurrent, out dispidNext));
}
catch (Exception exception)
{
dispidNext = SpecialDispIDs.Unknown;
return(exception.HResult);
}
})));
patchMap.Add(pVTable, entry);
Debug.Assert(patchMap.Count < 16);
}
}
}
}
}
public override void EnumCodeContextsOfPosition(UIntPtr sourceContext, uint offset, uint length, out IEnumDebugCodeContexts enumContexts)
{
var del = VTableHelpers.GetMethodDelegate <RawEnumCodeContextsOfPosition>(pActiveScriptDebug, 5);
HResult.Check(del(pActiveScriptDebug, sourceContext.ToUInt64(), offset, length, out enumContexts));
}
public override void InterruptScriptThread(uint scriptThreadID, ref EXCEPINFO excepInfo, ScriptInterruptFlags flags)
{
var del = VTableHelpers.GetMethodDelegate <RawInterruptScriptThread>(pActiveScript, 14);
del(pActiveScript, scriptThreadID, ref excepInfo, flags);
}
protected virtual void GetEHInfo(void *pICorJitInfo, void *methodHandle, uint ehIndex, out CORINFO_EH_CLAUSE clause)
{
_getEHInfo(VTableHelpers.AdjustThis_GetEHInfo(pICorJitInfo), methodHandle, ehIndex, out clause);
}
