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This PR moves `Declare` to `vernac` which will hopefully allow to
unify it with `DeclareDef` and avoid exposing entry internals.
There are many tradeoffs to be made as interface and placement of
tactics is far from clear; I've tried to reach a minimally invasive
compromise:
- moved leminv to `ltac_plugin`; this is unused in the core codebase
and IMO for now it is the best place
- hook added for abstract; this should be cleaned up later
- hook added for scheme declaration; this should be cleaned up later
- separation of hints vernacular and "tactic" part should be also done
later, for now I've introduced a `declareUctx` module to avoid being
invasive there.
In particular this last point strongly suggest that for now, the best
place for `Class_tactics` would be also in `ltac`, but I've avoided
that for now too.
This partially supersedes #10951 for now and helps with #11492 .
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Rewriter needs a bit of work as it calls a removed function, but no
big deal.
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This still needs API cleanup but we defer it to the moment we are
ready to make the internals private.
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This makes the API more orthogonal and allows better structure in
future code.
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This makes sense as it is mandatory for the client.
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We mark all the stuff scheduled to disappear in `Declare`, and remove
a couple of non-needed APIs.
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As we are aiming to forbid low-level manipulation of proofs outside
`Declare`, we move the code from `Abstract` to `Declare`.
We remove `build_constant_by_tactic` from the public API.
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We place creation and saving of interactive proofs in the same module;
this will allow to make `proof_entry` private, improving invariants
and control over clients, and to reduce the API [for example next
commit will move abstract declaration into this module, removing the
exported ad-hoc `build_constant_by_tactic`]
Next step will be to unify all the common code in the interactive /
non-interactive case; but we need to tweak the handling of obligations
first.
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As suggested by Gaëtan Gilbert.
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We make the types of the delayed / non-delayed declaration path
different, as the latter is just creating futures that are forced
right away.
TTBOMK the new code should behave identically w.r.t. old one, modulo
the equation `Future.(force (from_val x)) = x`.
There are some questions as what the code is doing, but in this PR
I've opted to keep the code 100% faithful to the original one, unless
I did a mistake.
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Add headers to a few files which were missing them.
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The patch is done in a minimal way. The hacks are turned into a new kind of
safer hacks, but hacks nonetheless. They should go away at some point, but
the current patch is focussed on the removal of Libobject cruft, not making
the dirty code of its upper-layer callers any cleaner.
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We introduce a new module that registers the scheme information that
side-effects need, thus removing the hook from `Declare`.
As we may want to deprecate scheme side effects, there is no need to
design a general mechanism for this kind of registration for now.
Would we remove the scheme side-effects the scheme code could become
self-contained again.
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Reviewed-by: SkySkimmer
Reviewed-by: ppedrot
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Proof entries are low-level objects and should not be manipulated by
users directly, in particular as we want to unify all the code
around declaration of constants.
This patch doesn't bring by itself a lot of improvement, other than
setting the base where to extend the interface, however it already
points out some points of interest, and in particular the manipulation
of opacity done by `Derive` which can be quite problematic, and of
course the handling of delayed proofs.
So while this is a first step, IMHO it doesn't harm a lot having it in
place, but a lot more work will be needed, in particular regarding the
handling of delayed proofs.
To make `proof_entry` a fully abstract type, the remaining work is
focused on `abstract` and obligations, both of which do quite a few
hackery that will have to be migrated to the `Declare` API.
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We factor some duplicate code, this is a step towards making the
`proof_entry` type abstract.
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The code is self-contained and only used by commands; this also
highlights the several `Libobject.obj` registered for each
declaration.
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The code is self-contained and only used by commands; this also
highlights the several `Libobject.obj` registered for each
declaration.
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This ensures that side-effect declarations come with their body, in prevision
of the decoupling of the Safe_typign API for CEP 40.
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Ack-by: ejgallego
Ack-by: gares
Reviewed-by: ppedrot
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(letins still declare universes in declare_variable as they use
entries)
The section check_same_poly is moved to declare_universe_context (it
makes more sense there, universe polymorphism doesn't apply to the
variables/letins themselves)
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We only do it for entries and not declarations because the upper layers
rely on the kernel being able to quickly tell that a definition is improperly
used inside a section. Typically, tactics can mess with the named context
and thus make the use of section definitions illegal. This cannot happen in
the kernel but we cannot remove it due to the code dependency.
Probably fixing a soundness bug reachable via ML code only. We were doing
fancy things w.r.t. computation of the transitive closure of the the variables,
in particular lack of proper sanitization of the kernel input.
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top of declare.
This PR is a follow up to #10406 , moving the then introduced
`proof_entry` type to `Declare`.
This makes sense as `Declare` is the main consumer of the entry type,
and already provides the constructors for it.
This is a step towards making the entry type private, which will allow
us to enforce / handle invariants on entry data better.
A side-effect of this PR is that now `Proof_global` does depend on
`Declare`, not the other way around, but that makes sense given that
closing an interactive proof will be a client of declare.
Indeed, all `Declare` / `Pfedit` / and `Proof_global` are tied into
tactics due to `abstract`, at some point we may be able to unify all
them into a single file in `vernac`.
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The object was mostly for wrangling universes, but we already have the
universe object for that.
It's also used by some code which iterates over objects to find
variables.
Search used to do this but was changed in a previous commit.
Prettyp.print_context and derivatives do this and I don't understand
it enough to fix it, so I kept a dummy object around. It seems like a
not very common used Print family (not documented AFAICT) so maybe we
should remove it all instead.
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We cleanup a few imports on Declare, and indeed we find a suspicious
exception `AlreadyDeclared` present in `CErrors` where it should not
be there.
We move it to `Declare`, waiting for more investigation.
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`declare_definition` didn't improve a lot the declare path and was
used only once on interesting code. Also, it had many optional
parameters. The declare path is critical enough as to care about a
tidy API.
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They are clearly not at the same importance level, thus we use a named
parameter and isolate the kinds as to allow further improvements and
refactoring.
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We move the bulk of `Decl_kinds` to a better place [namely
`interp/decls`] and refactor the use of this information quite a bit.
The information seems to be used almost only for `Dumpglob`, so it
certainly should end there to achieve a cleaner core.
Note the previous commits, as well as the annotations regarding the
dubious use of the "variable" data managed by the `Decls` file.
IMO this needs more work, but this should be a good start.
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It is completely local to that file, there was no point to put it into
the unrelated Declare file.
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It was never used actually.
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Followup on "[api] Remove `polymorphic` type alias, use labels instead."
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This is more in-line with attributes and the rest of the API, and
makes some code significantly clearer (as in `foo true false false`,
etc...)
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This datatype does belong to this layer.
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It was always the negation of the opacity flag.
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This allows to desynchronize the kernel-facing API from the proof-facing one.
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Nobody really knows where this module should belong, it seems. My personal
theory is that it should live in vernac instead, but due to nasty
interactions with abstract-like tactics, we have to put it somewhere below.
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