private void ValidateTryCatchFinallyBlocks()
{
foreach (var kv in TryBlocks.AsEnumerable())
{
if (kv.Value.Item2 == -1)
{
throw
new SigilVerificationException(
"Unended ExceptionBlock " + kv.Key,
IL.Instructions(AllLocals)
);
}
}
foreach (var kv in CatchBlocks.AsEnumerable())
{
if (kv.Value.Item2 == -1)
{
throw new Exception("Invalid State, all ExceptionBlocks are ended but CatchBlock " + kv.Key + " isn't ended");
}
}
foreach (var kv in FinallyBlocks.AsEnumerable())
{
if (kv.Value.Item2 == -1)
{
throw new Exception("Invalid State, all ExceptionBlocks are ended but FinallyBlock " + kv.Key + " isn't ended");
}
}
}
/// <summary>
/// Ends the given exception block.
///
/// All catch and finally blocks associated with the given exception block must be ended before this method is called.
/// </summary>
public Emit <DelegateType> EndExceptionBlock(ExceptionBlock forTry)
{
if (forTry == null)
{
throw new ArgumentNullException("forTry");
}
if (((IOwned)forTry).Owner != this)
{
FailOwnership(forTry);
}
var location = TryBlocks[forTry];
// Can't close the same exception block twice
if (location.Item2 != -1)
{
throw new InvalidOperationException("ExceptionBlock has already been ended");
}
if (CurrentExceptionBlock.Count > 0 && forTry != CurrentExceptionBlock.Peek())
{
throw new InvalidOperationException("Cannot end outer ExceptionBlock " + forTry + " while inner EmitExceptionBlock " + CurrentExceptionBlock.Peek() + " is open");
}
// Can't close an exception block while there are outstanding catch blocks
foreach (var kv in CatchBlocks.AsEnumerable())
{
if (kv.Key.ExceptionBlock != forTry)
{
continue;
}
if (kv.Value.Item2 == -1)
{
throw new InvalidOperationException("Cannot end ExceptionBlock, CatchBlock " + kv.Key + " has not been ended");
}
}
foreach (var kv in FinallyBlocks.AsEnumerable())
{
if (kv.Key.ExceptionBlock != forTry)
{
continue;
}
if (kv.Value.Item2 == -1)
{
throw new InvalidOperationException("Cannot end ExceptionBlock, FinallyBlock " + kv.Key + " has not been ended");
}
}
if (!CatchBlocks.Any(k => k.Key.ExceptionBlock == forTry) && !FinallyBlocks.Any(k => k.Key.ExceptionBlock == forTry))
{
throw new InvalidOperationException("Cannot end ExceptionBlock without defining at least one of a catch or finally block");
}
IL.EndExceptionBlock();
TryBlocks[forTry] = SigilTuple.Create(location.Item1, IL.Index);
Marks[forTry.Label] = IL.Index;
CurrentExceptionBlock.Pop();
if (MustMark)
{
MarkLabel(DefineLabel(AutoNamer.Next(this, "__autolabel")));
}
return(this);
}
