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thunks. Move from [lazy] to [delayed] in subtac.
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#2158,#2179)
Any unicode character above 128 is replaced by __Uxxxx_ where xxxx is
the hexa code for the unicode index of this character. For instance
<alpha> is turned into __U03b1_. I know, this is ugly. Better
solutions are welcome, but I'm afraid we can't do much better as long
as ocaml and haskell don't accept unicode letters in idents. At
least, this way we're pretty sure this translating won't create name
conflit, as long as extraction users avoid __ in their names,
something that they should already do btw (see for instance
extraction of coinductive types in ocaml). Yes, I should add a test
and a warning/error in case of use of __ someday.
NB: this commit belongs proudly to the quick'n'dirty category
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binders.
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The choice between camlp4/5 is done during configure with flags
-usecamlp5 (default for the moment) vs. -usecamlp4.
Currently, to have a full camlp4 compatibility, you need to change
all "EXTEND" and "GEXTEND Gram" into "EXTEND Gram", and change "EOI"
into "`EOI" in grammar entries. I've a sed script that does that
(actually the converse), but I prefer to re-think it and check a few
things before branching this sed into the build mechanism.
lib/compat.ml4 is heavily used to hide incompatibilities between camlp4/5
and try to propose a common interface (cf LexerSig / GrammarSig).
A few incompatible quotations have been turned into underlying code
manually, in order to make the IFDEF CAMLP5 THEN ... ELSE ... END
parsable by both camlp4 and 5. See in particular the fate of
<:str_item< declare ... end >>
Stdpp isn't used anymore, but rather Ploc (hidden behind local module Loc).
This forces to use camlp5 > 5.01.
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Cf tok.ml, token isn't anymore string*string where first
string encodes the kind of the token, but rather a nice
sum type. Unfortunately, string*string (a.k.a Plexing.pattern)
is still used in some places of Camlp5, so there's a few
conversions back and forth. But the penalty should be quite low,
and having nicer tokens helps in the forthcoming integration
of support for camlp4 post 3.10
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- Many of them were broken, some of them after Pierre B's rework
of mli for ocamldoc, but not only (many bad annotation, many files
with no svn property about Id, etc)
- Useless for those of us that work with git-svn (and a fortiori
in a forthcoming git-only setting)
- Even in svn, they seem to be of little interest
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so that we can return the right error message when trying to
declare a scheme twice.
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Reasoning modulo variable aliases induced an extra lookup in the
environment at each inversion of the components of the evar instances:
precomputing the aliases map allowed to gain a factor n.
Moreover, solve_evar_evar_l2r was recomputing the evar substitution
from the evar instance n more times than needed.
Function solve_evar_evar_l2r is still on O(n^2) but it does not seem
to be used so often actually. The trivial case has been optimized
(linear time) but the general case could probably be also cut down to
O(n*log(n)) if needed.
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some contribs by >30%) (BACKPORT 12768)
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dependency order of obligations that was not backwards-compatible.
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* Unicodetable: Update with the standard table for lower case conversion.
* Util: Rewrite "lowercase_unicode" to take the entire unicode character set
into account.
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(This should be a conservative extension of the old version.)
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[Generalizable (All|No) Variables (ident+)?], also update
type classes documentation to reflect the latest changes
in instance decls. Fix a bug in [Util.list_split_when].
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abbreviations of applied references.
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like the name they refer to).
Fixing buggy test-suite implicit.v
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branch
and remove equations stuff which moves to a separate plugin.
Classes:
- Ability to define classes post-hoc from constants or inductive types.
- Correctly rebuild the hint database associated to local hypotheses when
they are changed by a [Hint Extern] in typeclass resolution.
Tactics and proofs:
- Change [revert] so that it keeps let-ins (but not [generalize]).
- Various improvements to the [generalize_eqs] tactic to make it more robust
and produce the smallest proof terms possible.
Move [specialize_hypothesis] in tactics.ml as it goes hand in hand with
[generalize_eqs].
- A few new general purpose tactics in Program.Tactics like [revert_until]
- Make transitive closure well-foundedness proofs transparent.
- More uniform testing for metas/evars in pretyping/unification.ml
(might introduce a few changes in the contribs).
Program:
- Better sorting of dependencies in obligations.
- Ability to start a Program definition from just a type and no obligations,
automatically adding an obligation for this type.
- In compilation of Program's well-founded definitions, make the functional a
separate definition for easier reasoning.
- Add a hint database for every Program populated by [Hint Unfold]s for
every defined obligation constant.
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statically unbound variables (revealed by an assert failure in
Tacinterp.subst_rawconstr_and_expr). In particular, tauto's use of
name "id" was bypassing the globalization phase (apparently in an safe
way though).
Added a new kind of anomaly usable in case an anomaly results of an
unexpected exception.
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string in most commands expecting a global name (e.g. 'Print "+"' for
an infix notation or 'Print "{ _ } + { _ }"' for a misfix notation,
possibly surrounded by a scope delimiter). Support for such smart
globals in VERNAC EXTEND to do.
Added a file smartlocate.ml for high-level globalization functions.
Mini-nettoyage metasyntax.ml.
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The comment just below makes me think this is just a typo...
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as hints (see wish #2104).
- New type hint_entry for interpreted hint.
- Better centralization of functions dealing with evaluable_global_reference.
- Unfortunately, camlp4 does not factorize rules so that "Hint Resolve" had
uglily to be factorized by hand.
- Typography in RefMan-tac.tex.
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Overloading of GPack.notebook => Vector no longer needed
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Quelques modifications autour (géographiquement) de Util.list_split_at
Util.list_split_at devient Util.list_split_when (dénomination inventée
arbitrairement par moi-même, mais qui ne devrait pas déranger grand
monde vu qu'il semble n'y avoir que deux occurences de cette fonction).
Pour laisser la place à la fonction suivante :
Introduction de Util.list_split_at: qui sépare la liste à une position
donnée (alors que la nouvellement nommé list_split_when sépare à la
première occurence "vrai" d'un prédicat).
Ajout de quelques commentaires dans util.ml (pas le mli) sur ces deux
fonctions.
Suppression de Impargs.list_split_at (appel à Util).
Suppression de Subtac_pretyping.list_split_at (qui était du code mort de
toute façon).
Suppression Util.list_split_by qui n'est utilisé nulle part et est une
réimplémentation de List.partition (qui est probablement meilleure, en
particulier tail-recursive)
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This function is probably used only on small lists, but it's not a
reason to let it be quadratic... I'm wondering how many other inefficient
functions like this one may exist in the source of Coq.
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- call to open_process_full from Envars.camlp4lib was apparently
disturbing stdin/stdout/stderr and precipitating coqtop.byte death
in ocamldebug; renounced to add camlp4 to the ml path (why was it useful?)
which was the reason for calling camlp4lib (seems like camlp4lib
is now useless),
- Envars was needing str.cma which was missing when calling printers.cma;
renounced to use str.cma since its only use was for an elementary
split function.
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match_conjunction/match_disjunction/array_for_all_i
- Finally activate fine-tuned unfolding of iff in tauto: it breaks at
only one place in the user contribs (FSetAVL_dep.v).
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inductive types was not taken into account).
- Virtually extended tauto to
- support arbitrary-length disjunctions and conjunctions,
- support arbitrary complex forms of disjunctions and
conjunctions when in the contravariant of an implicative hypothesis,
- stick with the purely propositional fragment and not apply reflexivity.
This is virtual in the sense that it is not activated since it breaks
compatibility with the existing tauto.
- Modified the notion of conjunction and unit type used in hipattern in a
way that is closer to the intuitive meaning (forbid dependencies
between parameters in conjunction; forbid indices in unit types).
- Investigated how far "iff" could be turned into a direct inductive
definition; modified tauto.ml4 so that it works with the current and
the alternative definition.
- Fixed a bug in the error message from lookup_eliminator.
- Other minor changes.
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of the archive to install in coq user-contrib installation directory.
- Relaxed the validity check on identifiers from an error to a warning.
- Added a filtering option to Print LoadPath.
- Support for empty root in option -R.
- Better handling of redundant paths in ml loadpath.
- Makefile's: Added target initplugins and added initplugins to coqbinaries.
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revival of option -translate as a -beautify option.
PS: compilation checked against 11610.
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Ocaml :
- Fix the Coq__1 that was appearing in a .mli for some functor app
in the corresponding .ml (virtual printing of the interface in the .ml +
a pp_modname delayed in MTfunsig)
- Cleanup in MTwith parts
- Better handling of subst for MTsig
- Correct push/pop_visible in pp_struct/pp_signature
Common :
- Merge most of pp_global and pp_module
- Clarify the use of tables : remove some of them, attach many others
to their corresponding function.
- The "visible" table now groups mps, their content, and some subst
(for the inside of MTsig)
- Cleanup of tables is done via a registration mecanism
- No more "initial" create_renamings, instead some fully on-the-fly
renaming (thanks to the "Pre" phase)
- opened libaries are computed between "Pre" and "Impl" phases
- for simplicity, static_clash aren't computed statically anymore (cost?)
Extract_env:
- A "Pre" phase not only for Ocaml
- Extraction Library is in fact also Recursive (for getting a right
mpfiles_content) ... but only last item is printed to a real file
instead of /dev/null
Modutil: No more struct_get_references_*
Util : fix the evaluation order of prlist_strict
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Grant wish #1988 ("fun" forces reduction in "refine" if needed)
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- Fixed doc of assert as.
- Doc of apply in + update credits.
- Nettoyage partiel de Even.v en utilisant "Theorem with".
- Added check that name is not in use for "generalize as".
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- Prise en compte des notations applicatives
- Remplacement du codage des arguments liste des notations récursives
sous forme de terme par une représentation directe (permet notamment
de résoudre un problème de stack overflow de la fonction d'affichage)
+ Correction bug affichage Lemma dans ppvernac.ml
+ Divers util.ml
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- Correction divers messages d'erreur
- lorsque rien à réécrire dans une hyp,
- lorsqu'une variable ltac n'est pas liée,
- correction anomalie en présence de ?id dans le "as" de induction,
- correction mauvais env dans message d'erreur de unify_0.
- Diverses extensions et améliorations
- "specialize" :
- extension au cas (fun x1 ... xn => H u1 ... un),
- renommage au même endroit.
- "assert" et "pose proof" peuvent réutiliser la même hyp comme "specialize".
- "induction"
- intro des IH toujours au sommet même si induction sur var quantifiée,
- ajout d'un hack pour la reconnaissance de schémas inductifs comme
N_ind_double mais il reste du boulot pour reconnaître (et/ou
réordonner) les composantes d'un schéma dont les hypothèses ne sont pas
dans l'ordre standard,
- vérification de longueur et éventuelle complétion des
intropatterns dans le cas de sous-patterns destructifs dans induction
(par exemple "destruct n as [|[|]]" sur "forall n, n=0" ne mettait pas
le n dans le contexte),
- localisation des erreurs d'intropattern,
- ajout d'un pattern optionnel après "as" pour forcer une égalité et la
nommer (*).
- "apply" accepte plusieurs arguments séparés par des virgules (*).
- Plus de robustesse pour clear en présence d'evars.
- Amélioration affichage TacFun dans Print Ltac.
- Vieux pb espace en trop en tête d'affichage des tactiques EXTEND résolu
(incidemment, ça remodifie une nouvelle fois le test output Fixpoint.v !).
- Fusion VTactic/VFun dans l'espoir.
- Mise en place d'un système de trace de la pile des appels Ltac (tout en
préservant certains aspects de la récursivité terminale - cf bug #468).
- Tactiques primitives
- ajout de "move before" dans les tactiques primitives et ajout des
syntaxes move before et move dependent au niveau utilisateur (*),
- internal_cut peuvent faire du remplacement de nom d'hypothèse existant,
- suppression de Intro_replacing et du code sous-traitant
- Nettoyage
- Suppression cible et fichiers minicoq non portés depuis longtemps.
(*) Extensions de syntaxe qu'il pourrait être opportun de discuter
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- Optimisation du filtrage sous-terme de Ltac (cf sub_match) pour le cas
où c'est le n-ième sous-termes qui finalement réussit (passage à une
complexité en n plutôt que n^2, via l'utilisation de continuations).
- Sémantique du filtrage: suppression dans sub_match de la recherche
dans le type des let (puisque ce n'est pas cencé être une
information utilisateur) mais rajout de la recherche dans le champ
cast qui lui est utilisateur.
- Nouvelle fonctionnalité: récupération des noms des variables liantes
filtrées (dans matches/sub_match) et utilisation de ces noms dans
ltac (utile pour récupérer x dans "exists x, P x");
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- Now [ id : Class foo ] makes id an explicit argument,
and [ Class foo ] is equivalent to [ {someid} : Class foo ].
This makes declarations such as "Class Ord [ eq : Eq a ]" have
sensible implicit args.
- Better handling of {} in class and record declarations, refactorize
code for declaring structures and classes.
- Fix merging of implicit arguments information on section closing.
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imbriqués) du bug 1834, mais le bug 1834 reste ouvert [cases.ml].
- Réactivation de l'interprétation des listes dans "generalize" cassée
depuis 11072) [tacinterp.ml].
- Bricoles et petit nettoyage en passant [cases.ml et g_vernac.ml4].
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