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We mirror the structure of EConstr and move the destructors from `Term`
to `Constr`.
This is a step towards having a single module for `Constr`.
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The function Proofview.undefined was collecting twice the evars that
had advanced. Consequently, the functions Proofview.unshelve and
Proofview.with_shelf were possibly doing the same.
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the monad.
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Pointed out by PMP.
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Reminder of (some of) the reasons for removal:
- Despite the claim in sigma.mli, it does *not* prevent evar
leaks, something like:
fun env evd ->
let (evd',ev) = new_evar env evd in
(evd,ev)
will typecheck even with Sigma-like type annotations (with a proof of
reflexivity)
- The API stayed embryonic. Even typing functions were not ported to
Sigma.
- Some unsafe combinators (Unsafe.tclEVARS) were replaced with slightly
less unsafe ones (e.g. s_enter), but those ones were not marked unsafe
at all (despite still being so).
- There was no good story for higher order functions manipulating evar
maps. Without higher order, one can most of the time get away with
reusing the same name for the updated evar map.
- Most of the code doing complex things with evar maps was using unsafe
casts to sigma. This code should be fixed, but this is an orthogonal
issue.
Of course, this was showing a nice and elegant use of GADTs, but the
cost/benefit ratio in practice did not seem good.
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This allows a better control on the name to give to an evar and, in
particular, to address the issue about naming produced by "epose
proof" in one of the comment of Zimmi48 at PR #248 (see file names.v).
Incidentally updating output of Show output test (evar numbers shifted).
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This is the continuation of #244, we now deprecate `CErrors.error`,
the single entry point in Coq is `user_err`.
The rationale is to allow for easier grepping, and to ease a future
cleanup of error messages. In particular, we would like to
systematically classify all error messages raised by Coq and be sure
they are properly documented.
We restore the two functions removed in #244 to improve compatibility,
but mark them deprecated.
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Due to code reworking, a fastpath got anihilated because the slow path
was computed altogether. We now only compute the slow check whenever the
quick one fails.
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Now it is a private field, locations are optional.
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This is now useless as this returns evar-constrs, so that all functions acting
on them should be insensitive to evar-normalization.
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This removes quite a few unsafe casts. Unluckily, I had to reintroduce
the old non-module based names for these data structures, because I could
not reproduce easily the same hierarchy in EConstr.
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Was PR#350: tclDISPATCH: more informative error message
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"expected _n_ tactics" -> "exected _n_ tactics, was given _k_".
Also affect other similar tacticals from `Proofview`.
I used that for debugging once, I thought I might as well propose it for
mergeing.
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Refine fix for bug #4763, fixing #5149
Tactic [Refine.solve_constraints] and global option
Adds a new multi-goal tactic [Refine.solve_constraints] that forces solving of
unification constraints and evar candidates to be solved. run_tactic now calls
[solve_constraints] at every [.], preserving (mostly) the 8.4/8.5 behavior of tactics.
The option allows to unset the forced solving unification constraints at
each ".", letting the user control the places where the use of
heuristics is done.
Fix test-suite files too.
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goal is under focus and which support returning a relevant output.
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Suggested by @ppedrot
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As noted by @ppedrot, the first is redundant. The patch is basically a renaming.
We didn't make the component optional yet, but this could happen in a
future patch.
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module)
For the moment, there is an Error module in compilers-lib/ocamlbytecomp.cm(x)a
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unshelve_goals is used to correctly register dependent
subgoals that have to be solved. Resolution may fail to
do so using hints, so we have to put them back as goals
in that case. The shelf is a good interface for doing that.
unifiable can be used outside proofview to detect dependencies
between goals. This might be better in another module.
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You can now write [[1, 3-5]:tac.] to apply [tac] on the subgoals
numbered 1 and 3 to 5.
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This patch splits pretty printing representation from IO operations.
- `Pp` is kept in charge of the abstract pretty printing representation.
- The `Feedback` module provides interface for doing printing IO.
The patch continues work initiated for 8.5 and has the following effects:
- The following functions in `Pp`: `pp`, `ppnl`, `pperr`, `pperrnl`,
`pperr_flush`, `pp_flush`, `flush_all`, `msg`, `msgnl`, `msgerr`,
`msgerrnl`, `message` are removed. `Feedback.msg_*` functions must be
used instead.
- Feedback provides different backends to handle output, currently,
`stdout`, `emacs` and CoqIDE backends are provided.
- Clients cannot specify flush policy anymore, thus `pp_flush` et al are
gone.
- `Feedback.feedback` takes an `edit_or_state_id` instead of the old
mix.
Lightly tested: Test-suite passes, Proof General and CoqIDE seem to work.
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Emilio Jesus Gallego Arias
Hugo Herbelin
Matej Košík
Maxime Dénès
Pierre-Marie Pédrot
Enrico Tassi
Arnaud Spiwack
Matthieu Sozeau
Matthieu Sozeau
Pierre Letouzey
Cyprien Mangin