void BeginCatch(ISehHandlerBlock block, AbcCode code, AbcExceptionHandler e, ref int var, bool dupException, bool catchAnyException)
{
var beginIndex = code.Count;
var catchInfo = new CatchInfo
{
CatchAnyException = catchAnyException
};
bool coerceAny = catchAnyException;
if (var < 0 || catchAnyException)
{
coerceAny = true;
var = SharedExceptionVar;
catchInfo.IsTempVar = true;
}
catchInfo.ExceptionVar = var;
e.LocalVariable = var;
var handlerInfo = block.Tag as SehHandlerInfo;
if (handlerInfo == null)
{
handlerInfo = new SehHandlerInfo {
CatchInfo = catchInfo
};
block.Tag = handlerInfo;
}
else
{
handlerInfo.CatchInfo = catchInfo;
}
//NOTE: we store exception in temp variable to use for rethrow operation
if (dupException && !catchAnyException)
{
code.Dup();
}
if (coerceAny)
{
code.CoerceAnyType();
}
//store exception in variable to use for rethrow operation
code.SetLocal(var);
_resolver.Add(code[beginIndex], new ExceptionTarget(e));
}
void KillExceptionVariable(AbcCode code, CatchInfo ci)
{
if (!ci.IsVarKilled)
{
ci.IsVarKilled = true;
if (ci.IsTempVar)
{
code.Add(KillTempVarCore(ci.ExceptionVar));
}
else
{
//NOTE: Fix to avoid VerifyError when types can not be reconciled.
//code.PushUndefined();
//code.SetLocal(ci.ExceptionVar);
//code.Add(InstructionCode.Kill, ci.varExc);
}
}
}