| Commit message (Collapse) | Author | Age |
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The "Classic" string is still hard coded here in there in the system, but
not in STM.
BTW, the use of an hard coded "Classic" value suggests nobody really uses
"Set Default Proof Mode" in .v files.
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Return an evar_map with the right universes, when there are no focused
subgoals or the proof is finished.
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This fix is too restrictive. Still, opening a goal for an evar with a
pending conv_pb is unsafe since the user may prove (instantiate it) in
a way not compatible with the conv_pb.
Assigning an evar, in its lowest level API, should enforce that all
related conv_pbs are satisfied by the instance.
This also poses a UI problem, since there is not way to see these
conv_pbs. One could print a goal and say: look, the proof term you give
must validate this equation...
Given that the good fix is not obvious, we revert!
This reverts commit a0e792236c9666df1069753f8f807c12f713dcfb.
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This fixes a class of bugs like
refine foo; tactic.
where tactic fails (by resuming the remaining, unsolvable, problems) while
in 8.4 refine was failing.
It is not clear to us (Maxime and myself) if we should call
consider_remaining_unif_problems instead of check_problems_are_solved.
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Instead of mangling the AST in order to interpret par: we remember the goal
position to focus on it first and evaluate then the underlying vernacular
expression.
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Fixes compilation of Coq with OCaml 4.03 beta 1.
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The environment put in the goals was not the right one and could lead to
various leaks.
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I propose to change the name of the "Util.compose" function to "%".
Reasons:
1. If one wants to express function composition,
then the new name enables us to achieve this goal easier.
2. In "Batteries Included" they had made the same choice.
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Some functions were left in the old paradigm because they are only used by the
unification algorithms, so they are not worthwhile to change for now.
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The current solution may not be totally ideal though. We generate names for
anonymous evars on the fly at printing time, based on the Evar_kind data they
are wearing. This means in particular that the printed name of an anonymous
evar may change in the future because some unrelate evar has been solved or
introduced.
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Originally, rel-context was represented as:
Context.rel_context = Names.Name.t * Constr.t option * Constr.t
Now it is represented as:
Context.Rel.t = LocalAssum of Names.Name.t * Constr.t
| LocalDef of Names.Name.t * Constr.t * Constr.t
Originally, named-context was represented as:
Context.named_context = Names.Id.t * Constr.t option * Constr.t
Now it is represented as:
Context.Named.t = LocalAssum of Names.Id.t * Constr.t
| LocalDef of Names.Id.t * Constr.t * Constr.t
Motivation:
(1) In "tactics/hipattern.ml4" file we define "test_strict_disjunction"
function which looked like this:
let test_strict_disjunction n lc =
Array.for_all_i (fun i c ->
match (prod_assum (snd (decompose_prod_n_assum n c))) with
| [_,None,c] -> isRel c && Int.equal (destRel c) (n - i)
| _ -> false) 0 lc
Suppose that you do not know about rel-context and named-context.
(that is the case of people who just started to read the source code)
Merlin would tell you that the type of the value you are destructing
by "match" is:
'a * 'b option * Constr.t (* worst-case scenario *)
or
Named.Name.t * Constr.t option * Constr.t (* best-case scenario (?) *)
To me, this is akin to wearing an opaque veil.
It is hard to figure out the meaning of the values you are looking at.
In particular, it is hard to discover the connection between the value
we are destructing above and the datatypes and functions defined
in the "kernel/context.ml" file.
In this case, the connection is there, but it is not visible
(between the function above and the "Context" module).
------------------------------------------------------------------------
Now consider, what happens when the reader see the same function
presented in the following form:
let test_strict_disjunction n lc =
Array.for_all_i (fun i c ->
match (prod_assum (snd (decompose_prod_n_assum n c))) with
| [LocalAssum (_,c)] -> isRel c && Int.equal (destRel c) (n - i)
| _ -> false) 0 lc
If the reader haven't seen "LocalAssum" before, (s)he can use Merlin
to jump to the corresponding definition and learn more.
In this case, the connection is there, and it is directly visible
(between the function above and the "Context" module).
(2) Also, if we already have the concepts such as:
- local declaration
- local assumption
- local definition
and we describe these notions meticulously in the Reference Manual,
then it is a real pity not to reinforce the connection
of the actual code with the abstract description we published.
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The structure of the Context module was refined in such a way that:
- Types and functions related to rel-context declarations were put into the Context.Rel.Declaration module.
- Types and functions related to rel-context were put into the Context.Rel module.
- Types and functions related to named-context declarations were put into the Context.Named.Declaration module.
- Types and functions related to named-context were put into the Context.Named module.
- Types and functions related to named-list-context declarations were put into Context.NamedList.Declaration module.
- Types and functions related to named-list-context were put into Context.NamedList module.
Some missing comments were added to the *.mli file.
The output of ocamldoc was checked whether it looks in a reasonable way.
"TODO: cleanup" was removed
The order in which are exported functions listed in the *.mli file was changed.
(as in a mature modules, this order usually is not random)
The order of exported functions in Context.{Rel,Named} modules is now consistent.
(as there is no special reason why that order should be different)
The order in which are functions defined in the *.ml file is the same as the order in which they are listed in the *.mli file.
(as there is no special reason to define them in a different order)
The name of the original fold_{rel,named}_context{,_reverse} functions was changed to better indicate what those functions do.
(Now they are called Context.{Rel,Named}.fold_{inside,outside})
The original comments originally attached to the fold_{rel,named}_context{,_reverse} did not full make sense so they were updated.
Thrown exceptions are now documented.
Naming of formal parameters was made more consistent across different functions.
Comments of similar functions in different modules are now consistent.
Comments from *.mli files were copied to *.ml file.
(We need that information in *.mli files because that is were ocamldoc needs it.
It is nice to have it also in *.ml files because when we are using Merlin and jump to the definion of the function,
we can see the comments also there and do not need to open a different file if we want to see it.)
When we invoke ocamldoc, we instruct it to generate UTF-8 HTML instead of (default) ISO-8859-1.
(UTF-8 characters are used in our ocamldoc markup)
"open Context" was removed from all *.mli and *.ml files.
(Originally, it was OK to do that. Now it is not.)
An entry to dev/doc/changes.txt file was added that describes how the names of types and functions have changed.
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Note: they do not even seem to have a debugging purpose, so better remove
them before they bitrot.
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The option is still there, but not documented since it is too
dangerous. Hints and type classes instances are not taking cleared
variables into account.
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This tactical is inspired by discussions on the Coq-club list. For now
it is still undocumented, and there is room left for design issues.
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It will later be used to fix a bug and improve some code.
Interestingly, there were a redundant semantic equivalent to
extended_rel_list in the kernel called local_rels, and another private
copy of extended_rel_list in exactly the same file.
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Pierre-Marie Pédrot
Enrico Tassi
Matthieu Sozeau
Matthieu Sozeau
Maxime Dénès
Matej Kosik
Hugo Herbelin
Guillaume Melquiond