void WriteExceptionHandlerCollection(ExceptionHandlerCollection seh)
{
m_codeWriter.QuadAlign();
if (seh.Count < 0x15 && !IsFat(seh))
{
m_codeWriter.Write((byte)MethodDataSection.EHTable);
m_codeWriter.Write((byte)(seh.Count * 12 + 4));
m_codeWriter.Write(new byte [2]);
foreach (ExceptionHandler eh in seh)
{
m_codeWriter.Write((ushort)eh.Type);
m_codeWriter.Write((ushort)eh.TryStart.Offset);
m_codeWriter.Write((byte)(eh.TryEnd.Offset - eh.TryStart.Offset));
m_codeWriter.Write((ushort)eh.HandlerStart.Offset);
m_codeWriter.Write((byte)GetLength(eh.HandlerStart, eh.HandlerEnd, seh.Container.Instructions));
WriteHandlerSpecific(eh);
}
}
else
{
m_codeWriter.Write((byte)(MethodDataSection.FatFormat | MethodDataSection.EHTable));
WriteFatBlockSize(seh);
foreach (ExceptionHandler eh in seh)
{
m_codeWriter.Write((uint)eh.Type);
m_codeWriter.Write((uint)eh.TryStart.Offset);
m_codeWriter.Write((uint)(eh.TryEnd.Offset - eh.TryStart.Offset));
m_codeWriter.Write((uint)eh.HandlerStart.Offset);
m_codeWriter.Write((uint)GetLength(eh.HandlerStart, eh.HandlerEnd, seh.Container.Instructions));
WriteHandlerSpecific(eh);
}
}
}
static bool IsFat(ExceptionHandlerCollection seh)
{
for (int i = 0; i < seh.Count; i++)
{
ExceptionHandler eh = seh [i];
if (IsRangeFat(eh.TryStart, eh.TryEnd, seh.Container.Instructions))
{
return(true);
}
if (IsRangeFat(eh.HandlerStart, eh.HandlerEnd, seh.Container.Instructions))
{
return(true);
}
switch (eh.Type)
{
case ExceptionHandlerType.Filter:
if (IsRangeFat(eh.FilterStart, eh.FilterEnd, seh.Container.Instructions))
{
return(true);
}
break;
}
}
return(false);
}
void WriteFatBlockSize(ExceptionHandlerCollection seh)
{
int size = seh.Count * 24 + 4;
m_codeWriter.Write((byte)(size & 0xff));
m_codeWriter.Write((byte)((size >> 8) & 0xff));
m_codeWriter.Write((byte)((size >> 16) & 0xff));
}
