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* Reverted commit r13893 about propagation of more informativeGravatar herbelin2011-03-07
| | | | | | | unification failure messages (it is not fully usable and was not intended to be committed now, sorry for the noise). git-svn-id: svn+ssh://scm.gforge.inria.fr/svn/coq/trunk@13895 85f007b7-540e-0410-9357-904b9bb8a0f7
* Added propagation of evars unification failure reasons for betterGravatar herbelin2011-03-07
| | | | | | | | error messages. The architecture of unification error handling changed, not helped by ocaml for checking that every exceptions is correctly caught. Report or fix if you find a regression. git-svn-id: svn+ssh://scm.gforge.inria.fr/svn/coq/trunk@13893 85f007b7-540e-0410-9357-904b9bb8a0f7
* ratrapage exception, deja fait ...Gravatar bgregoir2011-01-11
| | | | git-svn-id: svn+ssh://scm.gforge.inria.fr/svn/coq/trunk@13782 85f007b7-540e-0410-9357-904b9bb8a0f7
* Fixing an uncaught exception bug with use of vmcastGravatar herbelin2011-01-07
| | | | | | (backport from 8.3) git-svn-id: svn+ssh://scm.gforge.inria.fr/svn/coq/trunk@13781 85f007b7-540e-0410-9357-904b9bb8a0f7
* More {raw => glob} changes for consistencyGravatar glondu2010-12-24
| | | | | | | | | perl -pi -e 's/(\W|_)raw((?:sort|_prop|terms?|_branch|_red_flag|pat tern|_constr_of|_of_pat)(?:\W|_))/\1glob_\2/g;s/glob__/glob_/g;s/(\ W)R((?:Prop|Type|Fix|CoFix|StructRec|WfRec|MeasureRec)\W)/\1G\2/g;s /glob_terms?/glob_constr/g' **/*.ml* git-svn-id: svn+ssh://scm.gforge.inria.fr/svn/coq/trunk@13756 85f007b7-540e-0410-9357-904b9bb8a0f7
* Rename rawterm.ml into glob_term.mlGravatar glondu2010-12-23
| | | | git-svn-id: svn+ssh://scm.gforge.inria.fr/svn/coq/trunk@13744 85f007b7-540e-0410-9357-904b9bb8a0f7
* Change of nomenclature: rawconstr -> glob_constrGravatar glondu2010-12-23
| | | | | | | | | | | | | | | | | | | | | | | | | | | | There was a discrepancy of the notions "raw" and "globalized" between constrs and tactics, and some confusion of the notions in e.g. genarg.mli (see all globwit_* there). This commit is a first step towards unification of terminology between constrs and tactics. Changes in module names will be done separately. In extraargs.ml4, the "ARGUMENT EXTEND raw" and related stuff, even affected by this change, has not been touched and highlights another confusion in "ARGUMENT EXTEND" in general that will be addressed later. The funind plugin doesn't respect the same naming conventions as the rest, so leave some "raw" there for now... they will be addressed later. This big commit has been generated with the following command (wrapped here, but should be on a *single* line): perl -pi -e 's/(\W(?:|pp|pr_l)|_)raw((?:constrs?|type|vars|_binder| _context|decl|_decompose|_compose|_make)(?:\W|_))/\1glob_\2/g;s/glo b__/glob_/g;s/prraw/prglob/g;s/(\W)R((?:Ref|Var|Evar|PatVar|App|Lam bda|Prod|LetIn|Cases|LetTuple|If|Rec|Sort|Hole|Cast|Dynamic)\W)/\1G \2/g' `git ls-files|grep -v dev/doc/changes.txt` git-svn-id: svn+ssh://scm.gforge.inria.fr/svn/coq/trunk@13743 85f007b7-540e-0410-9357-904b9bb8a0f7
* Improving a few error messages in Ltac interpretationGravatar herbelin2010-09-11
| | | | | | | | | | - improving error message when a reference to unfold is not found - repairing anomaly when an evaluable reference exists at internalisation-time but not at run time, and similarly for an arbitrary term (but the latter is new from 8.3 because of the new use of retyping instead of understand for typing Ltac values) git-svn-id: svn+ssh://scm.gforge.inria.fr/svn/coq/trunk@13408 85f007b7-540e-0410-9357-904b9bb8a0f7
* Fix [clenv_missing] to compute a better approximation of missingGravatar msozeau2010-08-02
| | | | | | | | | | dependent arguments. It breaks compatibility as some [apply with] clauses are not necessary anymore. Typically when applying [f_equal], the domain type of the function can be infered even if it does not appear directly in the conclusion of the goal. Fixes bug #2154. git-svn-id: svn+ssh://scm.gforge.inria.fr/svn/coq/trunk@13367 85f007b7-540e-0410-9357-904b9bb8a0f7
* Minor fixes:Gravatar msozeau2010-07-27
| | | | | | | | | - Document and fix [autounfold] - Fix warning about default Firstorder tactic object not being defined - Fix treatment of implicits in Program Lemma. git-svn-id: svn+ssh://scm.gforge.inria.fr/svn/coq/trunk@13334 85f007b7-540e-0410-9357-904b9bb8a0f7
* Updated all headers for 8.3 and trunkGravatar herbelin2010-07-24
| | | | git-svn-id: svn+ssh://scm.gforge.inria.fr/svn/coq/trunk@13323 85f007b7-540e-0410-9357-904b9bb8a0f7
* Added support for Ltac-matching terms with variables bound in the patternGravatar herbelin2010-06-06
| | | | | | | | | | | | | | | | | | - Instances found by matching.ml now collect the set of bound variables they possibly depend on in the pattern (see type Pattern.extended_patvar_map); the variables names are canonically ordered so that non-linear matching takes actual names into account. - Removed typing of matching constr instances in advance (in tacinterp.ml) and did it only at use time (in pretyping.ml). Drawback is that we may have to re-type several times the same term but it is necessary for considering terms with locally bound variables of which we do not keep the type (and if even we had kept the type, we would have to adjust the indices to the actual context the term occurs). - A bit of documentation of pattern.mli, matching.mli and pretyping.mli. - Incidentally add env while printing idtac messages. It seems more correct and I hope I did not break some intended existing behavior. git-svn-id: svn+ssh://scm.gforge.inria.fr/svn/coq/trunk@13080 85f007b7-540e-0410-9357-904b9bb8a0f7
* Documentation of pretype_id (minor commit).Gravatar herbelin2010-05-28
| | | | git-svn-id: svn+ssh://scm.gforge.inria.fr/svn/coq/trunk@13028 85f007b7-540e-0410-9357-904b9bb8a0f7
* Add (almost) compatibility with camlp4, without breaking support for camlp5Gravatar letouzey2010-05-19
| | | | | | | | | | | | | | | | | | | | | | | 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. git-svn-id: svn+ssh://scm.gforge.inria.fr/svn/coq/trunk@13019 85f007b7-540e-0410-9357-904b9bb8a0f7
* Added a few informations about file lineages (for the most part in kernel)Gravatar herbelin2010-05-09
| | | | git-svn-id: svn+ssh://scm.gforge.inria.fr/svn/coq/trunk@13005 85f007b7-540e-0410-9357-904b9bb8a0f7
* Remove the svn-specific $Id$ annotationsGravatar letouzey2010-04-29
| | | | | | | | | | | - 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 git-svn-id: svn+ssh://scm.gforge.inria.fr/svn/coq/trunk@12972 85f007b7-540e-0410-9357-904b9bb8a0f7
* Fix splitting evars tactics and stop dropping evar constraints whenGravatar msozeau2010-03-15
| | | | | | | | | building a new goal evar defs. Allow customization of the reduction function applied to subtac obligations. git-svn-id: svn+ssh://scm.gforge.inria.fr/svn/coq/trunk@12867 85f007b7-540e-0410-9357-904b9bb8a0f7
* Reorder resolution of type class and unification constraints.Gravatar msozeau2010-03-07
| | | | | | | | Fix a bug in dependent elimination when treating defined variables in the context. git-svn-id: svn+ssh://scm.gforge.inria.fr/svn/coq/trunk@12851 85f007b7-540e-0410-9357-904b9bb8a0f7
* Fix treatment of remaining unification constraints: raise a moreGravatar msozeau2010-03-07
| | | | | | | | | informative exception if some constraints do not unify. All calls except one used to raise a less informative exception when the constraints weren't solved. git-svn-id: svn+ssh://scm.gforge.inria.fr/svn/coq/trunk@12849 85f007b7-540e-0410-9357-904b9bb8a0f7
* Opened the possibility to type Ltac patterns but it is not fully functional yetGravatar herbelin2009-12-24
| | | | | | | | | | | | | | | - to type patterns w/o losing the information of what subterm is a hole would need to remember where holes were in "understand", but "understand" needs sometimes to instantiate evars to ensure the type of an evar is not its original type but the type of its instance (what can e.g. lower a universe level); we would need here to update evars type at the same time we define them but this would need in turn to check the convertibility of the actual and expected type since otherwise type-checking constraints may disappear; - typing pattern is apparently expensive in time; is it worth to do it for the benefit of pattern-matching compilation and coercion insertion? git-svn-id: svn+ssh://scm.gforge.inria.fr/svn/coq/trunk@12607 85f007b7-540e-0410-9357-904b9bb8a0f7
* Added support for definition of fixpoints using tactics.Gravatar herbelin2009-11-27
| | | | | | | | | | | | Fixed some bugs in -beautify and robustness of {struct} clause. Note: I tried to make the Automatic Introduction mode on by default for version >= 8.3 but it is to complicated to adapt even in the standard library. git-svn-id: svn+ssh://scm.gforge.inria.fr/svn/coq/trunk@12546 85f007b7-540e-0410-9357-904b9bb8a0f7
* Promote evar_defs to evar_map (in Evd)Gravatar glondu2009-11-11
| | | | git-svn-id: svn+ssh://scm.gforge.inria.fr/svn/coq/trunk@12502 85f007b7-540e-0410-9357-904b9bb8a0f7
* Make usage of Dyn explicitGravatar glondu2009-10-28
| | | | git-svn-id: svn+ssh://scm.gforge.inria.fr/svn/coq/trunk@12435 85f007b7-540e-0410-9357-904b9bb8a0f7
* Delete trailing whitespaces in all *.{v,ml*} filesGravatar glondu2009-09-17
| | | | git-svn-id: svn+ssh://scm.gforge.inria.fr/svn/coq/trunk@12337 85f007b7-540e-0410-9357-904b9bb8a0f7
* Jolification : tentative de supprimer les "( evd)" et associés quiGravatar aspiwack2009-07-07
| | | | | | | | | traînaient un peu partout dans le code depuis la fusion d'evar_map et evar_defs. Début du travail d'uniformisation des noms donnés aux evar_defs à travers le code. git-svn-id: svn+ssh://scm.gforge.inria.fr/svn/coq/trunk@12224 85f007b7-540e-0410-9357-904b9bb8a0f7
* Fixes for r12197, the refined evars were not returned in case fail_evarGravatar msozeau2009-06-22
| | | | | | | was true. git-svn-id: svn+ssh://scm.gforge.inria.fr/svn/coq/trunk@12206 85f007b7-540e-0410-9357-904b9bb8a0f7
* Use more consistent resolution parameters in Program and regular typingGravatar msozeau2009-06-18
| | | | | | | | and add an optional fail_evar flag to control resolution better in interpretation functions. git-svn-id: svn+ssh://scm.gforge.inria.fr/svn/coq/trunk@12197 85f007b7-540e-0410-9357-904b9bb8a0f7
* Fix "unsatisfiable constraints" error messages to include all theGravatar msozeau2009-06-18
| | | | | | | | necessary information. Fix implementation of [split_evars] and use splitting more wisely as it has a big performance impact. git-svn-id: svn+ssh://scm.gforge.inria.fr/svn/coq/trunk@12196 85f007b7-540e-0410-9357-904b9bb8a0f7
* When typing a non-dependent arrow, do not put the (anonymous) variableGravatar msozeau2009-06-11
| | | | | | | | | | | in the context to avoid it being abstracted over in potential evars occuring in the codomain, which can prevent unifications. Add [intro] to the typeclasses eauto and fix [make_resolve_hyp] to properly normalize types w.r.t. evars before searching for a class in an hypothesis. git-svn-id: svn+ssh://scm.gforge.inria.fr/svn/coq/trunk@12182 85f007b7-540e-0410-9357-904b9bb8a0f7
* - New cleaning phase for the entry points of pretyping.mlGravatar herbelin2009-04-24
| | | | | | | | | | | | | | | | | | | | | | | - Uniformisation of ML names between pretyping.ml and subtac_pretyping_F.ml so as to ease the comparison between these files. Application of a change that cannot do harm: j_nf_evar now called after getting evd from consider_remaining_unif_problems in Subtac_pretyping_F.understand_judgment. Four differences remain (is it the sign of a problem?): 1) understand_type fails in Pretyping if evars remain but does not fail in Subtac_pretyping_F 2) resolve_typeclasses (when called) is called with ~onlyargs:false and ~fail:true in Pretyping.understand, Pretyping.understand_gen and Pretyping.understand_type but with true and false in these same functions in Subtac_pretyping_F 3) understand_ltac does not call typeclasses in Pretyping but it does call it in Subtac_pretyping_F 4) understand_judgment does call typeclasses in Pretyping but not in Subtac_pretyping_F git-svn-id: svn+ssh://scm.gforge.inria.fr/svn/coq/trunk@12099 85f007b7-540e-0410-9357-904b9bb8a0f7
* Fixes to make Ynot compile with the trunk:Gravatar msozeau2009-03-20
| | | | | | | | | | | | | | | | - Choose one of the possible instances of an evar when considering remaining unification constraints: otherwise we just do nothing and some evars remain uninstantiated. - Normalise the goal w.r.t. evars before subst, to avoid a double vision problem: the substituted variable appears only in an instance of an evar and when we try the rewrite it has been substituted making the dependency disappear. - Hack to correcly handle let-in annotations which are internalized as casts: they're really typing constraints. Shouldn't we just change the AST to have the type at rawconstr let-in nodes? git-svn-id: svn+ssh://scm.gforge.inria.fr/svn/coq/trunk@11998 85f007b7-540e-0410-9357-904b9bb8a0f7
* On remplace evar_map par evar_defs (seul evar_defs est désormais exporté Gravatar aspiwack2009-02-19
| | | | | | | | | | | | | | | | | | | | | | | | | | | | par Evd). Ça s'accompagne de quelques autres modifications de l'interface (certaines fonctions étaient des doublons, ou des conversions entre evar_map et evar_defs). J'ai modifié un peu la structure de evd.ml aussi, pour éviter des fonctions redéfinies deux fois (i.e. définies trois fois !), j'ai introduit des sous-modules pour les différentes couches. Il y a à l'heure actuelle une pénalité en performance assez sévère (due principalement à la nouvelle mouture de Evd.merge, si mon diagnostique est correct). Mais fera l'objet de plusieurs optimisations dans les commits à venir. Un peu plus ennuyeux, la test-suite du mode déclaratif ne passe plus. Un appel de Decl_proof_instr.mark_as_done visiblement, je suis pour l'instant incapable de comprendre ce qui cause cette erreur. J'espère qu'on pourra le déterminer rapidement. Ce commit est le tout premier commit dans le trunk en rapport avec les évolution futures de la machine de preuve, en vue en particulier d'obtenir un "vrai refine". git-svn-id: svn+ssh://scm.gforge.inria.fr/svn/coq/trunk@11939 85f007b7-540e-0410-9357-904b9bb8a0f7
* Moved parts of Sign to Term. Unified some names (e.g. decomp_n_prod ->Gravatar herbelin2008-12-31
| | | | | | | | | | splay_prod_n, lam_it -> it_mkLambda, splay_lambda -> splay_lam). Added shortcuts for "fst (decompose_prod t)" and co. git-svn-id: svn+ssh://scm.gforge.inria.fr/svn/coq/trunk@11727 85f007b7-540e-0410-9357-904b9bb8a0f7
* Apply vmconv if there are no _undefined_ evars around.Gravatar msozeau2008-11-08
| | | | git-svn-id: svn+ssh://scm.gforge.inria.fr/svn/coq/trunk@11560 85f007b7-540e-0410-9357-904b9bb8a0f7
* Slight change of the semantics of user-given casts: they don't reallyGravatar msozeau2008-11-07
| | | | | | | | | | | | | | | | | help the type _checking_ anymore (they don't become typing constraints) but they permit to coerce a subterm in a type. In particular, when using a VM cast we avoid unneeded, unexpected conversions using the default machine (oops!). Also remove the corresponding comment in pretyping and fix the wrong use of casts in toplevel/command: accept the trouble of using evars. This has the somewhat adverse effect that when typing casted object we now have no typing constraints (see e.g. examples in Cases.v)! Probably, this will be backtracked partially tomorrow as many contribs can rely on it and the change could make some unifications fail (in particular with deep coercions). Let's try anyway! git-svn-id: svn+ssh://scm.gforge.inria.fr/svn/coq/trunk@11558 85f007b7-540e-0410-9357-904b9bb8a0f7
* Move Record desugaring to constrintern and add ability to use notationsGravatar msozeau2008-11-05
| | | | | | | | | for record fields (using "someproj : sometype where not := constr" syntax). Only one notation allowed currently and no redeclaration after the record declaration either (will be done for typeclasses). git-svn-id: svn+ssh://scm.gforge.inria.fr/svn/coq/trunk@11542 85f007b7-540e-0410-9357-904b9bb8a0f7
* More debugging of handling of open constrs with typeclasses:Gravatar msozeau2008-10-25
| | | | | | | | avoid trying to resolve classes early in open constr arguments for Ltac, the tactics themselves should do whatever's appropriate with the constraints. git-svn-id: svn+ssh://scm.gforge.inria.fr/svn/coq/trunk@11503 85f007b7-540e-0410-9357-904b9bb8a0f7
* Open notation for declaring record instances.Gravatar msozeau2008-10-23
| | | | | | | | | | | | | | | | | | | | It solves feature request 1852, makes me and Arnaud happy and will permit to factor some more code in typeclasses. - Records are introduced using the syntax "{| x := t; y := foo |}" and "with" clauses are currently parsed but not yet supported in the elaboration. You are invited to suggest other syntaxes :) - Missing fields are turned into holes, extra fields cause an error message. The current implementation finds the type of the record at pretyping time, from the typing constraint alone (and just expects an inductive with one constructor). It is then impossible to use scope information to parse the bodies: that may be wrong. The other solution I see is using the fields to detect the type earlier, before internalisation of the bodies, but then we get in name clash hell. - In funind/contrib/interface I mostly put [assert false] everywhere to avoid warnings. git-svn-id: svn+ssh://scm.gforge.inria.fr/svn/coq/trunk@11496 85f007b7-540e-0410-9357-904b9bb8a0f7
* Uniformisation du format des messages d'erreur (commencent par uneGravatar herbelin2008-07-17
| | | | | | | | | | majuscule - si pas un ident ou un terme - et se terminent par un point). Restent quelques utilisations de "error" qui sont liées à des usages internes, ne faudrait-il pas utiliser des exceptions plus spécifiques à la place ? git-svn-id: svn+ssh://scm.gforge.inria.fr/svn/coq/trunk@11230 85f007b7-540e-0410-9357-904b9bb8a0f7
* Various improvements in handling of evars in general and typingGravatar msozeau2008-06-21
| | | | | | | | | | | | | | | | | | | | | | | constraints in Program: - normalize types and defs of local fixpoints before checking the guardness condition to avoid having to give type annotations, e.g: << Definition fold (A B : Set) (f : B -> A -> B) : B -> tree A -> B := fix aux acc t := match t with | Leaf x => f acc x | Node l => fold_left aux l acc end. >> - add new inh_coerce_to_prod to allow coercion of the typing constraint to a product before trying to split it. It's a noop in standard mode, and forgets subsets in Program. Allows to typecheck: << (λ x, x) : { f : nat -> nat | ... } >>. - Better handling of the "abstract" typing constraints in Program. - Correctly normalize w.r.t. evars. the tycon given by users in Program. git-svn-id: svn+ssh://scm.gforge.inria.fr/svn/coq/trunk@11156 85f007b7-540e-0410-9357-904b9bb8a0f7
* Fixes incorrect handling of existing existentials variables inGravatar msozeau2008-06-03
| | | | | | | typeclass code. git-svn-id: svn+ssh://scm.gforge.inria.fr/svn/coq/trunk@11047 85f007b7-540e-0410-9357-904b9bb8a0f7
* Mise en place d'un algorithme d'inversion des contraintes de type lorsGravatar herbelin2008-05-05
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | du filtrage. Cela permet de détecter les cas impossibles et de simuler les contraintes d'inversion exprimables sous la forme d'un assignement des arguments du constructeurs (cf le cas de Vtail dans Bvector.v). Si l'on filtre sur t:I u1 .. un, et que chaque ui a la forme vi(wi) avec vi composé uniquement de constructeurs, et que le résultat final est P(w1,...,wn) (qui est éventuellement lui-même une evar) alors on construit le prédicat Q:=fun x1 .. xn y => match x1 .. xn y with | v1(z) .. vn(z) t => P(z) | _ .. _ _ => ?evar-speciale-cas-impossible end qui vérifiera bien que Q u1 .. un = P(w1,..,wp). En raison de limitations de l'unification (on aurait besoin d'eta conversion pour résoudre des problèmes du genre "terme rigide == match x with _ => ?evar end", et besoin d'instanciation par constructeurs pour des cas comme "A(y) = match ?evar with C x => A(x) end"), je n'ai pas réussi à traiter le cas général. Aussi, on adopte une stratégie pragmatique consistant à tester plusieurs prédicats possibles : - si un type final est donné, on essaie d'abord l'algorithme de Matthieu et sinon le nouvel algorithme (permet par exemple de traiter certains cas d'élimination dépendante de Bvector.v), - s'il n'y a pas de type final, on essaie d'abord le nouvel algo et sinon, on essaie avec un prédicat sans dépendance (permet de traiter des cas compliqués comme celui de par cas sur I' dans le fichier Case13.v de la test-suite). Dans la pratique, il y a beaucoup de changement dans le code de compile_case. - Par exemple, la compilation est maintenant toujours appelé avec un prédicat (là où l'on pouvait avoir None, on a maintenant toujours au moins une evar). - En revanche, le membre droit des clauses est maintenant optionnel. Si c'est None, c'est qu'on se trouve dans le cas d'une branche impossible au moment du calcul du prédicat de retour. - Aussi, on renonce aux PrLetIn et PrProd dans l'expression du predicat de retour mais il faut savoir que c'est maintenant la liste des tomatchs qui spécifie le contexte exact dans lequel le prédicat de retour est bien typé. - Et d'autres... git-svn-id: svn+ssh://scm.gforge.inria.fr/svn/coq/trunk@10883 85f007b7-540e-0410-9357-904b9bb8a0f7
* Réutilisation de l'infrastructure pour le polymorphisme d'univers desGravatar herbelin2008-04-30
| | | | | | | | | | constantes qui avait été mise en place pour la 8.1gamma puis abandonné pour cause entre autres d'inefficacité. Cette fois, on restreind le polymorphisme au seul cas d'alias vers un inductif. git-svn-id: svn+ssh://scm.gforge.inria.fr/svn/coq/trunk@10877 85f007b7-540e-0410-9357-904b9bb8a0f7
* Little fixes in setoid_rewrite.Gravatar msozeau2008-04-17
| | | | | | | | | | | | | | | - More meaningful argument name for resolve_typeclasses. - Try to remove unneeded instance declarations in Morphisms. - Allow the proofs of reflexivity arising from unchanged arguments in setoid_rewrite to be fullfiled by Morphism instances and not necessariy because the relation is reflexive (needed by higher-order morphisms). Use a new "MorphismProxy" class to implement that efficiently. - Fix a bug in abstract_generalize not delta-reducing a type where it should. git-svn-id: svn+ssh://scm.gforge.inria.fr/svn/coq/trunk@10807 85f007b7-540e-0410-9357-904b9bb8a0f7
* Fix evar bugs in type classes:Gravatar msozeau2008-04-09
| | | | | | | | | | - disallow uninstantiated hypotheses (typically local variables with no assigned types) as solutions for typeclass instantiation. - Fix resolve_typeclasses call in pretyping that was not propagating found instances in the term. git-svn-id: svn+ssh://scm.gforge.inria.fr/svn/coq/trunk@10772 85f007b7-540e-0410-9357-904b9bb8a0f7
* - Second pass on implementation of let pattern. Parse "let ' par [as x]?Gravatar msozeau2008-03-28
| | | | | | | | | | | | | | | | | | [in I] := t [return pred] in b", just as SSReflect does with let:. Change implementation: no longer a separate AST node, just add a case_style annotation on Cases to indicate it (if ML was dependently typed we could ensure that LetPatternStyle Cases have only one term to be matched and one branch, alas...). This factors out most code and we lose no functionality (win ! win !). Add LetPat.v test suite. - Slight improvement of inference of return clauses for dependent pattern matching. If matching a variable of non-dependent type under a tycon that mentions it while giving no return clause, the dependency will be automatically infered. Examples at the end of DepPat. Should get rid of most explicit returns under tycons. git-svn-id: svn+ssh://scm.gforge.inria.fr/svn/coq/trunk@10727 85f007b7-540e-0410-9357-904b9bb8a0f7
* Various fixes on typeclasses:Gravatar msozeau2008-03-27
| | | | | | | | | | | | | | | | | | | - Better interface in constrintern w.r.t. evars used during typechecking - Add "unsatisfiable_constraints" exception which gives back the raw evar_map that was not satisfied during typeclass search (presentation could be improved). - Correctly infer the minimal sort for typeclasses declared as definitions (everything was in type before). - Really handle priorities in typeclass eauto: goals produced with higher priority (lowest number) instances are tried before other of lower priority goals, regardless of the number of subgoals. - Change inverse to a notation for flip, now that universe polymorphic definitions are handled correctly. - Add EquivalenceDec class similar to SetoidDec, declaring decision procedures for equivalences. git-svn-id: svn+ssh://scm.gforge.inria.fr/svn/coq/trunk@10724 85f007b7-540e-0410-9357-904b9bb8a0f7
* Une passe sur l'unification des evars (suite aux commits 10124, 10125, 10145)Gravatar herbelin2008-03-10
| | | | | | | | | - Correction bug des filtres dans define_evar_as_abstraction - Nettoyage, documentation et réorganisations diverses git-svn-id: svn+ssh://scm.gforge.inria.fr/svn/coq/trunk@10650 85f007b7-540e-0410-9357-904b9bb8a0f7
* Syntax changes in typeclasses, remove "?" for usual implicit argumentsGravatar msozeau2008-03-06
| | | | | | | | | | | | | | | | | | | | | binding, add "!" syntax for the new binders which require parameters and not superclasses. Change backquotes for curly braces for user-given implicit arguments, following tradition. This requires a hack a la lpar-id-coloneq. Change ident to global for typeclass names in class binders. Also requires a similar hack to distinguish between [ C t1 tn ] and [ c : C t1 tn ]. Update affected theories. While hacking the parsing of { wf }, factorized the two versions of fix annotation parsing that were present in g_constr and g_vernac. Add the possibility of the user optionaly giving the priority for resolve and exact hints (used by type classes). Syntax not fixed yet: a natural after the list of lemmas in "Hint Resolve" syntax, a natural after a "|" after the instance constraint in Instance declarations (ex in Morphisms.v). git-svn-id: svn+ssh://scm.gforge.inria.fr/svn/coq/trunk@10628 85f007b7-540e-0410-9357-904b9bb8a0f7
* Change implementation of resolution for typeclasses to use a customizedGravatar msozeau2008-02-08
| | | | | | | | eauto instead of an arbitrary tactic. Export more from eauto to allow easier debugging. git-svn-id: svn+ssh://scm.gforge.inria.fr/svn/coq/trunk@10534 85f007b7-540e-0410-9357-904b9bb8a0f7
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