[PATCH 2/5] widl: Support using qualified names for interfaces.

[Jacek Caban]

On 02.02.2021 09:22, Rémi Bernon wrote:
> And make qualified name lookup more robust:
>
> * Either parse a non-qualified name directly from
>    the current (or global) namespace, or start
>    parsing a qualified name.
>
> * Qualified name parsing uses the lookup namespace
>    stack only to find types or sub-namespaces.


I think it's a step in the right direction, but things like 
find_qualified_type_or_error() resetting lookup_namespace as a side 
effect does not look appealing.


I wonder if we could entirely get rid of global lookup_namespace 
variable. As far as parser is considered, namespace_pfx could just 
return a namespace type that we could use to find types. That leaves us 
with is_type() and is_namespace(), which are used in lexer. I'd say that 
it's not a job of lexer to distinguish between an identifier and a known 
type. Maybe we could just get rid of aNAMESPACE and aKNOWNTYPE and deal 
with that in parser instead?


Thanks,

Jacek