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![proof_stack] is equivalent to the old meaning of ![proof]: the body
has type `pstate:Proof_global.t option -> Proof_global.t option`
The other specifiers are for the following body types:
~~~
![open_proof] `is_ontop:bool -> pstate`
![maybe_open_proof] `is_ontop:bool -> pstate option`
![proof] `pstate:pstate -> pstate`
![proof_opt_query] `pstate:pstate option -> unit`
![proof_query] `pstate:pstate -> unit`
~~~
The `is_ontop` is only used for the warning message when declaring a
section variable inside a proof, we could also just stop warning.
The specifiers look closely related to stm classifiers, but currently
they're unconnected. Notably this means that a ![proof_query] doesn't
have to be classified QUERY.
![proof_stack] is only used by g_rewrite/rewrite whose behaviour I
don't fully understand, maybe we can drop it in the future.
For compat we may want to consider keeping ![proof] with its old
meaning and using some new name for the new meaning. OTOH fixing
plugins to be stricter is easier if we change it as the errors tell us
where it's used.
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Typically instead of [start_proof : ontop:Proof_global.t option -> bla ->
Proof_global.t] we have [start_proof : bla -> Proof_global.pstate] and
the pstate is pushed on the stack by a caller around the
vernacentries/mlg level.
Naming can be a bit awkward, hopefully it can be improved (maybe in a
followup PR).
We can see some patterns appear waiting for nicer combinators, eg in
mlg we often only want to work with the current proof, not the stack.
Behaviour should be similar modulo bugs, let's see what CI says.
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It's used a few times in the stdlib (a couple of which need no other
change when removing the !) and not at all throughout our CI.
Considering that I think it's fair enough to remove it.
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This code was originally part of #8811, authored by Gaëtan Gilbert.
It seems we are not very consistent on what we do when we use
`ParameterEntry`, specially w.r.t. universes but as code cleanup
progresses we will have a better view.
Co-authored-by: Gaëtan Gilbert <gaetan.gilbert@skyskimmer.net>
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This impacts a lot of code, apparently in the good, removing several
conversions back and forth constr.
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I had to reorganize the code a bit. The Context command moved to
comAssumption, as it is not so related to type classes. We were able to
remove a few hooks on the way.
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Ack-by: JasonGross
Reviewed-by: ppedrot
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Not sure the warning is worth the extra parameter.
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This is in view of the 8.10 release, after which we will remove the
option and the `VtUnknown` classification.
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Previously, they were hard-wired in the ML code.
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Kernel should be mostly correct, higher levels do random stuff at
times.
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Ack-by: SkySkimmer
Reviewed-by: ejgallego
Ack-by: ppedrot
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This is intended to be separate from handling of implicit binders.
The remaining uses of declare_manual_implicits satisfy a lot of
assertions, giving the possibility of simplifying the interface in the
future.
Two disabled warnings are added for things that currently pass silently.
Currently only Mtac passes non-maximal implicits to
declare_manual_implicits with the force-usage flag set. When implicit
arguments don't have to be named, should move Mtac over to
set_implicits.
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Supersedes #8718.
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Reviewed-by: SkySkimmer
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I think the usage looks cleaner this way.
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We remove all calls to `Flags.is_program_mode` except one (to compute
the default value of the attribute). Everything else is passed
explicitely, and we remove the special logic in the interpretation loop
to set/unset the flag.
This is especially important since the value of the flag has an impact on
proof modes, so on the separation of parsing and execution phases.
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For compatibility, also
* Adjust implicits on equiv_transitivity and equiv_symmetry, and in some closed bugs
* Add overlay for HoTT setting Arguments on some instances.
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Reviewed-by: mattam82
Reviewed-by: ppedrot
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This makes code paths clearer (we still factorize a lot of the
treatment), and we seize the opportunity to forbid anonymous
`Declare Instance` which is not a documented construction, and seems to
make little sense in practice.
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This is a pre-requisite to use automated formatting tools such as
`ocamlformat`, also, there were quite a few places where the comments
had basically no effect, thus it was confusing for the developer.
p.s: Reading some comments was a lot of fun :)
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We make `declaration_hook`s optional arguments everywhere, and thus we
avoid some "fake" functions having to be passed.
This identifies positively the code really using hooks [funind,
rewrite, coercions, program, and canonicals] and helps moving toward
some hope of reification.
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There is little point in having a list, as there is virtually no sharing
nor expansion of bound universe names. This representation is thus more
compact.
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This fixes #8791.
We explicitly specify for intro the names of binders which are
given by the user. This still can suffer from spurious collisions,
see #8819.
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terms
This is necessary for programs like Equations that call add_definition
and want to later update in their hook some separate datastructures
which refer to the obligations that are defined by Program. We give back
a map from obligation name to a constr defined in the program's universe
state which the hook returns as well. (Obligation names also correspond
to undefined evars in the original terms through
Obligations.eterm_obligations).
Using this, I can avoid ucontext_of_aucontext in Equations, allowing PR
#8601 to go through.
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Removing a few Global.env in the way.
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In general, `Nametab` is not a module you want to open globally as it
exposes very generic identifiers such as `push` or `global`.
Thus, we remove all global opens and qualify `Nametab` access. The
patch is small and confirms the hypothesis that `Nametab` access
happens in few places thus it doesn't need a global open.
It is also very convenient to be able to use `grep` to see accesses to
the namespace table.
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It's basically an occur check so it makes sense to put it in vars
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"Declaration" hooks can be polymorphic on their return type, however
this facility doesn't seem used in the codebase.
We thus remove the polymorphism with the hope to be able to reify the
control later on.
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We remove sections paths from kernel names. This is a cleanup as most of the times this information was unused. This implies a change in the Kernel API and small user visible changes with regards to tactic qualification. In particular, the removal of "global discharge" implies a large cleanup of code.
Additionally, the change implies that some machinery in `library` and `safe_typing` must now take an `~in_section` parameter, as to provide the information whether a section is open or not.
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`Classes.new_instance` is one of the largest functions of the
codebase; we split it up and reduce indentation.
This will help further cleanups. This PR should introduce no code
changes other than splitting the function up.
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This was introduced in #7820 and it is not needed indeed. As 8.9 was
not released we don't need to perform a deprecation phase.
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This gives user control on the transparent state of a hint db. Can
override defaults more easily (report by J. H. Jourdan).
For "core", declare that variables can be unfolded, but no constants
(ensures compatibility with previous auto which allowed conv on closed
terms)
Document Hint Variables
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Apparently it was not useful. I don't remember what I was thinking
when I added it.
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reference was defined as Ident or Qualid, but the qualid type already
permits empty paths. So we had effectively two representations for
unqualified names, that were not seen as equal by eq_reference.
We remove the reference type and replace its uses by qualid.
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- move_location to proofs/logic.
- intro_pattern_naming to Namegen.
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Continuing the interface cleanup we place `Constrexpr` in the
internalization module, which is the one that eliminates it.
This slims down `pretyping` considerably, including removing the
`Univdecls` module which existed only due to bad dependency ordering
in the first place. Thanks to @ Skyskimmer we also remove a duplicate
`univ_decl` definition among `Misctypes` and `UState`.
This is mostly a proof of concept yet as it depends on quite a few
patches of the tree. For sure some tweaks will be necessary, but it
should be good for review now.
IMO the tree is now in a state where we can could easy eliminate more
than 10 modules without any impact, IMHO this is a net saving API-wise
and would help people to understand the structure of the code better.
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