Since these aren't warnings, per se, we don't note every single call
site that has one. And we raise mlog.notice in non-fatal mode to avoid
either:
- being too threatening
- making builds fail with --fatal-meson-warnings
Nevertheless, it is useful to give people a heads-up that there is an
upgrade opportunity, rather than waiting until they upgrade and then
causing projects to begin printing fatal warnings.
mlog can already print location info, and we use this often -- including
for custom feature warnings already. Make this work everywhere, so that
it is feasible to move such custom warnings to globally tracked
Features.
info.types could be a tuple like (str, ContainerTypeInfo()). That means
we have to check types one by one and only print error if none of them
matched.
Also fix the case when default value is None for a container type, it
should leave the value to None to be able to distinguish between unset
and empty list.
I've used any because it needs to be infinitely recursive, something
that we simply can't model. But basically until it goes into validator
we have no way of knowing what's going on, since one can write code
like:
```python
KwargInfo[str]('arg', object, validator=_some_very_complex_logic_to_get_specific_string)
```
As such, we can't assume that validator is receiving a type _T, it could
be anything.
We have a lot of these. Some of them are harmless, if unidiomatic, such
as `if (condition)`, others are potentially dangerous `assert(...)`, as
`assert(condtion)` works as expected, but `assert(condition, message)`
will result in an assertion that never triggers, as what you're actually
asserting is `bool(tuple[2])`, which will always be true.
Because currently you can write something like:
```python
KwargInfo('capture', bool)
```
Which proclaims "this must be bool", but the default is then not valid.
Because of the convertor function we have no guarantee that what we're
getting is in fact a `Dict[str, TYPE_var]`, it might well be anything in
the values, so we need to do some casting and set the return type to
object. This works out fine in practice as our declared `TypeDict`
inputs in the actual function signatures will be used instead.
This commit introduces a new type of `HoldableObject`: The
`SecondLevelHolder`. The primary purpose of this class is
to handle cases where two (or more) `HoldableObject`s are
stored at the same time (with one default object). The
best (and currently only) example here is the `BothLibraries`
class.
This allows checking specific values that are added or deprecated, which
we do a surprising amount of. This works with both containers and scalar
values
Eli Schwartz
Christian Clauss
Xavier Claessens
Dylan Baker
Daniel Mensinger