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We also move the Ltac-specific grammar to its folder.
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composition operator.
Short story:
This pull-request:
(1) removes the definition of the "right-to-left" function composition operator
(2) adds the definition of the "left-to-right" function composition operator
(3) rewrites the code relying on "right-to-left" function composition to rely on "left-to-right" function composition operator instead.
Long story:
In mathematics, function composition is traditionally denoted with ∘ operator.
Ocaml standard library does not provide analogous operator under any name.
Batteries Included provides provides two alternatives:
_ % _
and
_ %> _
The first operator one corresponds to the classical ∘ operator routinely used in mathematics.
I.e.:
(f4 % f3 % f2 % f1) x ≜ (f4 ∘ f3 ∘ f2 ∘ f1) x
We can call it "right-to-left" composition because:
- the function we write as first (f4) will be called as last
- and the function write as last (f1) will be called as first.
The meaning of the second operator is this:
(f1 %> f2 %> f3 %> f4) x ≜ (f4 ∘ f3 ∘ f2 ∘ f1) x
We can call it "left-to-right" composition because:
- the function we write as first (f1) will be called first
- and the function we write as last (f4) will be called last
That is, the functions are written in the same order in which we write and read them.
I think that it makes sense to prefer the "left-to-right" variant because
it enables us to write functions in the same order in which they will be actually called
and it thus better fits our culture
(we read/write from left to right).
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composition in a more obvious way
This commit rewrites terms
(fun x -> f1 (f2 ... (fN x)...))
to
f1 % f2 % ... % fN
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mainly concerning referring to "Context.{Rel,Named}.get_{id,value,type}" functions.
If multiple modules define a function with a same name, e.g.:
Context.{Rel,Named}.get_type
those calls were prefixed with a corresponding prefix
to make sure that it is obvious which function is being called.
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This bug was introduced by
commit 34ef02fac1110673ae74c41c185c228ff7876de2
Author: Matej Kosik <m4tej.kosik@gmail.com>
Date: Fri Jan 29 10:13:12 2016 +0100
CLEANUP: Context.{Rel,Named}.Declaration.t
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This commit proposes a fix for
https://coq.inria.fr/bugs/show_bug.cgi?id=4842
The previous feature is a bit complicated to do correctly due to the
separation over who has control of the console.
Indeed, `-timed` is a command line option of the batch compiler, so we
resort to a hack and assume control over the console. I am not very
happy with this solution but should do the job.
Note that the timing event is still being sent by the standard msg
mechanism. A particular point of interest is the duplication of paths
between the stm and vernac.
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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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In some cases prior to this patch, there were two cases for the same
error function, one taking a location, the other not.
We unify them by using an option parameter, in the line with recent
changes in warnings and feedback.
This implies a bit of clean up in some places, but more importantly, is
the preparation for subsequent patches making `Loc.location` opaque,
change that could be use to improve modularity and allow a more
functional implementation strategy --- for example --- of the
beautifier.
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This is a followup to 91ee24b4a7843793a84950379277d92992ba1651 , where
we got a few cases wrong wrt to newline endings.
Thanks to @herbelin for pointing it out.
This doesn't yet fix https://coq.inria.fr/bugs/show_bug.cgi?id=4842
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This partially reverts c14ccd1b8a3855d4eb369be311d4b36a355e46c1
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Note that even "Load Verbose" is not supposed to display them.
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The -verbose family of options is only meant to echo sentences as they are
processed. The patch below broke this, while fixing another issue. That
other issue will be fixed in the next commit.
Revert "Fixing "Load" without "Verbose" in coqtop, after vernac_com lost its"
This reverts commit 2a28c677c3c205ff453b7b5903e4c22f4de2649b.
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Now scheme will not try to build ill-typed dependent analyses
on recursive records with primitive projections but report
a proper error.
Minor change of the API (adding one error case to recursion_scheme_error).
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When defining a (co)recursive inductive with primitive projections on,
which lacks eta-conversion and hence dependent elimination, build only
the associated non-dependent elimination principles, and warn about
this. Also make the printing of the status of an inductive
w.r.t. projections and eta conversion explicit in Print and About.
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We also add a Coq86.v compat file.
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lib/cErrors.ml)
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For the moment, there is a Closure module in compiler-libs/ocamloptcomp.cm(x)a
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module)
For the moment, there is an Error module in compilers-lib/ocamlbytecomp.cm(x)a
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This is a reimplementation of Hugo's PR#117.
We are trying to address the problem that the name of some reduction functions
was not saying what they were doing (e.g. whd_betadeltaiota was doing let-in
reduction). Like PR#117, we are careful that no function changed semantics
without changing the names. Porting existing ML code should be a matter of
renamings a few function calls.
Also, we introduce more precise reduction flags fMATCH, fFIX, fCOFIX
collectively denominated iota.
We renamed the following functions:
Closure.betadeltaiota -> Closure.all
Closure.betadeltaiotanolet -> Closure.allnolet
Reductionops.beta -> Closure.beta
Reductionops.zeta -> Closure.zeta
Reductionops.betaiota -> Closure.betaiota
Reductionops.betaiotazeta -> Closure.betaiotazeta
Reductionops.delta -> Closure.delta
Reductionops.betalet -> Closure.betazeta
Reductionops.betadelta -> Closure.betadeltazeta
Reductionops.betadeltaiota -> Closure.all
Reductionops.betadeltaiotanolet -> Closure.allnolet
Closure.no_red -> Closure.nored
Reductionops.nored -> Closure.nored
Reductionops.nf_betadeltaiota -> Reductionops.nf_all
Reductionops.whd_betadelta -> Reductionops.whd_betadeltazeta
Reductionops.whd_betadeltaiota -> Reductionops.whd_all
Reductionops.whd_betadeltaiota_nolet -> Reductionops.whd_allnolet
Reductionops.whd_betadelta_stack -> Reductionops.whd_betadeltazeta_stack
Reductionops.whd_betadeltaiota_stack -> Reductionops.whd_all_stack
Reductionops.whd_betadeltaiota_nolet_stack -> Reductionops.whd_allnolet_stack
Reductionops.whd_betadelta_state -> Reductionops.whd_betadeltazeta_state
Reductionops.whd_betadeltaiota_state -> Reductionops.whd_all_state
Reductionops.whd_betadeltaiota_nolet_state -> Reductionops.whd_allnolet_state
Reductionops.whd_eta -> Reductionops.shrink_eta
Tacmach.pf_whd_betadeltaiota -> Tacmach.pf_whd_all
Tacmach.New.pf_whd_betadeltaiota -> Tacmach.New.pf_whd_all
And removed the following ones:
Reductionops.whd_betaetalet
Reductionops.whd_betaetalet_stack
Reductionops.whd_betaetalet_state
Reductionops.whd_betadeltaeta_stack
Reductionops.whd_betadeltaeta_state
Reductionops.whd_betadeltaeta
Reductionops.whd_betadeltaiotaeta_stack
Reductionops.whd_betadeltaiotaeta_state
Reductionops.whd_betadeltaiotaeta
They were unused and having some reduction functions perform eta is confusing
as whd_all and nf_all don't do it.
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When using Record and an explicit sort constraint, the
universe was wrongly made flexible and minimized.
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When declaring the universes of a lemma explicitely, throw an error if
after minimization the type of a lemma still refers to unbound
universes. This is a fix and an incompatibility, but scripts
will be backwards compatible themselves.
Fix another minor bug in treating universe binders for (Co)Fixpoint.
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On the user side, coqtop and coqc take a list of warning names or categories
after -w. No prefix means activate the warning, a "-" prefix means deactivate
it, and "+" means turn the warning into an error. Special categories include
"all", and "default" which contains the warnings enabled by default.
We also provide a vernacular Set Warnings which takes the same flags as argument.
Note that coqc now prints warnings.
The name and category of a warning are printed with the warning itself.
On the developer side, Feedback.msg_warning is still accessible, but the
recommended way to print a warning is in two steps:
1) create it by:
let warn_my_warning =
CWarnings.create ~name:"my-warning" ~category:"my-category"
(fun args -> Pp.strbrk ...)
2) print it by:
warn_my_warning args
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Ensure correspondence between the term and type to shrink, so that Lets
are preserved when they are used relevantly in either of them. This
avoids e.g. "simpl" in the shrinked hypotheses to reduce shrinking,
while maintaining unsimplified types in the type of the shrinked
obligations (for compatibility).
Simplify Lambda, Prod case of shrinking,
By invariant (we start with a term and its type), the abstraction's
types correspond.
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By default obligations defined by tactics are defined
transparently or opaque according to the Obligations Transparent flag,
except proofs of subset obligations which are treated
as opaque by default. When the user proves the obligation using
Qed or Defined, this information takes precedence, and only
when the obligation cannot be Qed'ed because it contains
references to a recursive function an error is raised
(this prevents the guardness checker error).
Shrinked obligations were not doings this correctly.
Forcing transparency due to fixpoint prototypes
takes precedence over the user preference.
Program: do not force opacity of subset proofs,
maintaining compatibility.
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Pierre-Marie Pédrot
Maxime Dénès
Matej Kosik
Guillaume Melquiond
Matej Kosik
Enrico Tassi
Hugo Herbelin
Emilio Jesus Gallego Arias
Matthieu Sozeau
Matthieu Sozeau
Pierre Letouzey