Internal error while parsing invalid code

[leonardoalt]

constructor of LValue
interface constructor()

creates

	uint x

constructor of LValue
interface constructor()

creates

	uint

both lead to

Internal error
no valid tokens

[leonardoalt]

Maybe fixed by #68 ?

[d-xo]

hmmm unlikely fixed by #68, this is an error from the parser. Agree that it would be nice to have some position information here also....

[MrChico]

This stems from https://github.com/ethereum/act/blob/master/src/Parse.y#L310. And I think the problem here is that the parser expected more tokens, but there weren't any more tokens. But since the error is the lack of a token I don't think we can get any position information from parseError at least. We could create a special case of AlexPosn or something to indicate the last token maybe