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Reviewed-by: CohenCyril
Reviewed-by: ppedrot
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Add Zify <X> are documented.
Add <X> is deprecated as it clashed with the standard Add command
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Co-authored-by: Kazuhiko Sakaguchi <pi8027@gmail.com>
- insert boolean constraint (b = true \/ b = false)
- add specs for b2z
- zify_post_hook performs a case-analysis over boolean constraints
- Stricter typing constraints for `zify` declared operators
The type is syntactically checked against the declaration of injections.
Some explicit casts may need to be inserted.
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The syntax of formulae is extended to support boolean constants (true,
false), boolean operators Bool.andb, Bool.orb, Bool.implb, Bool.negb,
Bool.eqb and comparison operators Z.eqb, Z.ltb, Z.gtb, Z.leb and
Z.ltb.
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Reviewed-by: ppedrot
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Reviewed-by: ejgallego
Reviewed-by: ppedrot
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Reviewed-by: Zimmi48
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Reviewed-by: ppedrot
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It was deprecated in 8.12 and not used in the wild.
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eta-expansion of "match" branches
Reviewed-by: gares
Ack-by: ppedrot
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Ack-by: SkySkimmer
Reviewed-by: ppedrot
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We complete some arduous refactoring in order to bring all the
internals and code of constant / proof saving into the same module.
In particular, this PR moves the remaining parts of proof saving from
`Lemmas` to `Declare`.
The reduction in exposed internals is considerable; in particular, we
remove the export of the internals of `proof_entry` and `proof_object`
[used in delayed proofs], which will allow us to start to address many
issues with the current setup, such as #10363 .
There are still some TODOs, that will be addressed in subsequent PRs:
- Remove `declare_constant` in favor of higher-level APIs
- Then, remove access to `proof_entry` entirely
- Refactor current very verbose handling of proof info.
- Remove compat modules / API.
- Rework handling of delayed proofs [this may be hard due to state and the STM]
- Reify Hook API for the case where it acts as a continuation [that is to say, declaring constants from the Hook]
List of remaining offenders for `proof_entry` / `declare_constant` in
the codebase:
- File "vernac/comHints.ml"
- File "vernac/indschemes.ml"
- File "vernac/comProgramFixpoint.ml"
- File "vernac/comAssumption.ml"
- File "vernac/record.ml"
- File "plugins/ltac/leminv.ml"
- File "plugins/setoid_ring/newring.ml"
- File "plugins/funind/recdef.ml"
- File "plugins/funind/gen_principle.ml"
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but ssrsearch is not loaded.
Fixes #12338
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Reviewed-by: ejgallego
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Analysis by Jason Gross:
> The previous semantics was to reset the file offset to 0 during the
> unlock operation, unless it fails, in which case you'd roll back the
> file offset to it's present position (and very dubiously not report
> any issues). The new semantics say to always roll the file offset
> back to it's initial position, meaning that the position is at the
> end of the file after unlocking. As far as I can tell, this results
> in appending marshelled blobs to the cache file on every call to
> add, rather than overwriting the cache file with the marshelled blob
> of the updated table. Presumably unmarshelling the concatenation of
> marshelled data can result in segfaults somehow? This also explains
> why the bug only shows up sometimes; you need to get the system into
> a state where it writes to the cache in a way that concatenates
> blobs in the right way, but once you have such a cache you'll
> segfault every time you read from it.
>
> I think we should probably assert false in the with block, or just
> remove it entirely http://man7.org/linux/man-pages/man3/lockf.3.html
> doesn't say anything about lockf erroring on unlocking). If we start
> seeing errors, we can turn it into a warning.
Closes: #12072
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Reviewed-by: SkySkimmer
Ack-by: Zimmi48
Ack-by: ejgallego
Ack-by: kyoDralliam
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Error happened only when writing:
functional induction f x y z.
instead of
functional induction (f x y z).
Now the former is equivalent to the former: implicits must be omitted.
Hence small source of incompatibility, but a more homogeneous
behaviour.
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Ack-by: SkySkimmer
Reviewed-by: ppedrot
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- new clauses "hyp:", "concl:", "headhyp:" and "headconcl:" to restrict
match to an hypothesis or the conclusion, possibly only at the head
(like SearchHead in this latter case)
- new clause "is:" to search by kind of object (for some list of kinds)
- support for any combination of negations, disjunctions and conjunctions,
using a syntax close to that of intropatterns.
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Reviewed-by: JasonGross
Ack-by: Zimmi48
Ack-by: herbelin
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Ack-by: gares
Ack-by: ppedrot
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Re-raising inside exception handlers must be done with care in order
to preserve backtraces; even if newer OCaml versions do a better job
in automatically spilling `%reraise` in places that matter, there is
no guarantee for that to happen.
I've done a best-effort pass of places that were re-raising
incorrectly, hopefully I got the logic right.
There is the special case of `Nametab.error_global_not_found` which is
raised many times in response to a `Not_found` error; IMHO this error
should be converted to something more specific, however the scope of
that change would be huge as to do easily...
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runtime.
Reviewed-by: herbelin
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Current backtraces for tactics leave a bit to desire, for example
given the program:
```coq
Lemma u n : n + 0 = n.
rewrite plus_O_n.
```
the backtrace stops at:
```
Found no subterm matching "0 + ?M160" in the current goal.
Called from file "proofs/proof.ml", line 381, characters 4-42
Called from file "tactics/pfedit.ml", line 102, characters 31-58
Called from file "plugins/ltac/g_ltac.mlg", line 378, characters 8-84
```
Backtrace information `?info` is as of today optional in some tactics,
such as `tclZERO`, it doesn't cost a lot however to reify backtrace
information indeed in `tclZERO` and provide backtraces for all tactic
errors. The cost should be small if we are not in debug mode.
The backtrace for the failed rewrite is now:
```
Found no subterm matching "0 + ?M160" in the current goal.
Raised at file "pretyping/unification.ml", line 1827, characters 14-73
Called from file "pretyping/unification.ml", line 1929, characters 17-53
Called from file "pretyping/unification.ml", line 1948, characters 22-72
Called from file "pretyping/unification.ml", line 2020, characters 14-56
Re-raised at file "pretyping/unification.ml", line 2021, characters 66-73
Called from file "proofs/clenv.ml", line 254, characters 12-58
Called from file "proofs/clenvtac.ml", line 95, characters 16-53
Called from file "engine/proofview.ml", line 1110, characters 40-46
Called from file "engine/proofview.ml", line 1115, characters 10-34
Re-raised at file "clib/exninfo.ml", line 82, characters 4-38
Called from file "proofs/proof.ml", line 381, characters 4-42
Called from file "tactics/pfedit.ml", line 102, characters 31-58
Called from file "plugins/ltac/g_ltac.mlg", line 378, characters 8-84
```
which IMO is much better.
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Reviewed-by: Matafou
Ack-by: SkySkimmer
Reviewed-by: gares
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This seems to be a pattern used quite a bit in the wild, it does not hurt
to be a bit more lenient to tolerate this kind of use. Interestingly the
API was already offering a similar generalization in some unrelated places.
We also backtrack on the change in Floats.FloatLemmas since it is an instance
of this phenomenon.
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See #11840 for a motivation. I had to fix Floats.FloatLemmas because
it uses the same name for a notation and a term, and the fact this
unfold was working on this was clearly a bug. I hope nobody relies
on this kind of stuff in the wild.
Fixes #5764: "Cannot coerce ..." should be a runtime error.
Fixes #5159: "Cannot coerce ..." should not be an error.
Fixes #4925: unfold gives error on Admitted.
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Reviewed-by: vbgl
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Reviewed-by: Zimmi48
Reviewed-by: jfehrle
Ack-by: ppedrot
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Reviewed-by: ejgallego
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Reviewed-by: ppedrot
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This is already protected by then enter block.
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The inner body was not raising any exception since it was in the monad,
and even if it did so, the enter block would have caught it.
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Reviewed-by: herbelin
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Reviewed-by: ejgallego
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Ack-by: Zimmi48
Ack-by: ejgallego
Ack-by: herbelin
Ack-by: ppedrot
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This is extracted from #9710, where we need the environment anyway to compute
iota rules on inductive types with let-bindings. The commit is self-contained,
so I think it could go directly in to save me a few rebases.
Furthermore, this is also related to #11707. Assuming we split cbn from the
other reduction machine, this allows to merge the "local" machine with
the general one, since after this PR they will have the same type. One less
reduction machine should make people happy.
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Since we don't always have the call trace anymore, we explicitly
insert a catch of failures in TacAlias. The trace is then treated in
this catch rather than propagated to the underlying calls (a VFun?). I
hope this is doing the same.
The suggestion to use a tclOR is from P.-M. Pédrot.
Note: this is not fully ideal, the messages which were expecting a
trace should be rethought to take into account either that the calls
are not printed anymore, or to print them again.
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Reviewed-by: Matafou
Reviewed-by: SkySkimmer
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