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* Fix bug #2989: make unification.ml able to deal with canonical structure in ↵Gravatar pboutill2013-03-25
| | | | | | | | any context + reindenting noise git-svn-id: svn+ssh://scm.gforge.inria.fr/svn/coq/trunk@16354 85f007b7-540e-0410-9357-904b9bb8a0f7
* Restrict (try...with...) to avoid catching critical exn (part 12)Gravatar letouzey2013-03-13
| | | | git-svn-id: svn+ssh://scm.gforge.inria.fr/svn/coq/trunk@16289 85f007b7-540e-0410-9357-904b9bb8a0f7
* Evarconv: When doing a iota of a fixpoint, use constant name instead of ↵Gravatar pboutill2013-02-25
| | | | | | | | fixpoint definition + Help the use of #trace on evar_conv_appr_x git-svn-id: svn+ssh://scm.gforge.inria.fr/svn/coq/trunk@16244 85f007b7-540e-0410-9357-904b9bb8a0f7
* A more informative message when the elimination predicate forGravatar herbelin2013-02-17
| | | | | | | | | | | | destruct, rewrite, etc. is not well-typed. Also added support for a more informative message when the elimination predicate is not well-formed while using the smart "second-order" unification algorithm. However the "abstract_list_all" algorithm seems to remain more informative though, so we still use this algorithm for reporting about ill-typed predicates. git-svn-id: svn+ssh://scm.gforge.inria.fr/svn/coq/trunk@16207 85f007b7-540e-0410-9357-904b9bb8a0f7
* Added propagation of evars unification failure reasons for betterGravatar herbelin2013-02-17
| | | | | | | | 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@16205 85f007b7-540e-0410-9357-904b9bb8a0f7
* Splitted Evarutil in two filesGravatar ppedrot2013-02-10
| | | | git-svn-id: svn+ssh://scm.gforge.inria.fr/svn/coq/trunk@16195 85f007b7-540e-0410-9357-904b9bb8a0f7
* Revert "Ordered evars by level of dependency in the merging phase of ↵Gravatar herbelin2013-02-05
| | | | | | | | | | | unification" Though this commit provides with more "natural" instances of metas found by unification, it breaks a few contribs. The best approach to try is maybe now to instead plug apply on evarconv.ml, rather than on unification.ml! git-svn-id: svn+ssh://scm.gforge.inria.fr/svn/coq/trunk@16191 85f007b7-540e-0410-9357-904b9bb8a0f7
* Uniformization of the "anomaly" command.Gravatar ppedrot2013-01-28
| | | | git-svn-id: svn+ssh://scm.gforge.inria.fr/svn/coq/trunk@16165 85f007b7-540e-0410-9357-904b9bb8a0f7
* Ordered evars by level of dependency in the merging phase of unificationGravatar herbelin2013-01-27
| | | | | | so as to get instances of evars closer from what the user sees. git-svn-id: svn+ssh://scm.gforge.inria.fr/svn/coq/trunk@16160 85f007b7-540e-0410-9357-904b9bb8a0f7
* Fixed a little inefficiency of "set/destruct" over a pattern. NowGravatar herbelin2012-12-18
| | | | | | different instances of a meta are checked against full conversion. git-svn-id: svn+ssh://scm.gforge.inria.fr/svn/coq/trunk@16086 85f007b7-540e-0410-9357-904b9bb8a0f7
* Factorization of the elim unif flag with the default flag. SinceGravatar herbelin2012-12-18
| | | | | | | fine-tuning of unif flags is still ongoing, I prefer however not to go too far in factorization yet. git-svn-id: svn+ssh://scm.gforge.inria.fr/svn/coq/trunk@16085 85f007b7-540e-0410-9357-904b9bb8a0f7
* Modulification of identifierGravatar ppedrot2012-12-14
| | | | git-svn-id: svn+ssh://scm.gforge.inria.fr/svn/coq/trunk@16071 85f007b7-540e-0410-9357-904b9bb8a0f7
* Moved Intset and Intmap to Int namespace.Gravatar ppedrot2012-12-14
| | | | git-svn-id: svn+ssh://scm.gforge.inria.fr/svn/coq/trunk@16067 85f007b7-540e-0410-9357-904b9bb8a0f7
* Monomorphization (pretyping)Gravatar ppedrot2012-11-22
| | | | git-svn-id: svn+ssh://scm.gforge.inria.fr/svn/coq/trunk@15994 85f007b7-540e-0410-9357-904b9bb8a0f7
* Monomorphized a lot of equalities over OCaml integers, thanks toGravatar ppedrot2012-11-08
| | | | | | | | | | | | | | | | | the new Int module. Only the most obvious were removed, so there are a lot more in the wild. This may sound heavyweight, but it has two advantages: 1. Monomorphization is explicit, hence we do not miss particular optimizations of equality when doing it carelessly with the generic equality. 2. When we have removed all the generic equalities on integers, we will be able to write something like "let (=) = ()" to retrieve all its other uses (mostly faulty) spread throughout the code, statically. git-svn-id: svn+ssh://scm.gforge.inria.fr/svn/coq/trunk@15957 85f007b7-540e-0410-9357-904b9bb8a0f7
* Removed many calls to OCaml generic equality. This was done byGravatar ppedrot2012-10-29
| | | | | | | | writing our own comparison functions, and enforcing monomorphization in many places. This should be more efficient, btw. Still a work in progress. git-svn-id: svn+ssh://scm.gforge.inria.fr/svn/coq/trunk@15932 85f007b7-540e-0410-9357-904b9bb8a0f7
* Improving error message when abtraction over goal (abstract_list_allGravatar herbelin2012-10-04
| | | | | | | used when applying schemes - induction, rewrite, ...) is well-typed but not of the right type. git-svn-id: svn+ssh://scm.gforge.inria.fr/svn/coq/trunk@15853 85f007b7-540e-0410-9357-904b9bb8a0f7
* Remove some more "open" and dead code thanks to OCaml4 warningsGravatar letouzey2012-10-02
| | | | git-svn-id: svn+ssh://scm.gforge.inria.fr/svn/coq/trunk@15844 85f007b7-540e-0410-9357-904b9bb8a0f7
* As r15801: putting everything from Util.array_* to CArray.*.Gravatar ppedrot2012-09-14
| | | | git-svn-id: svn+ssh://scm.gforge.inria.fr/svn/coq/trunk@15804 85f007b7-540e-0410-9357-904b9bb8a0f7
* This patch removes unused "open" (automatically generated fromGravatar regisgia2012-09-14
| | | | | | | | | | compiler warnings). I was afraid that such a brutal refactoring breaks some obscure invariant about linking order and side-effects but the standard library still compiles. git-svn-id: svn+ssh://scm.gforge.inria.fr/svn/coq/trunk@15800 85f007b7-540e-0410-9357-904b9bb8a0f7
* Unification in Evar_conv uses an abstract machine stateGravatar pboutill2012-08-09
| | | | | | | | | It uses a term in front of a stack instead of a term in front of a list of applied terms. From outside of eq_appr_x nothing should have changed. Nasty evar instantiation bug git-svn-id: svn+ssh://scm.gforge.inria.fr/svn/coq/trunk@15719 85f007b7-540e-0410-9357-904b9bb8a0f7
* Updating headers.Gravatar herbelin2012-08-08
| | | | git-svn-id: svn+ssh://scm.gforge.inria.fr/svn/coq/trunk@15715 85f007b7-540e-0410-9357-904b9bb8a0f7
* Reductionops refactoringGravatar pboutill2012-07-20
| | | | | | | | | | | Semantic changes are : - whd_nored_stack remplaces a defined meta by its value whereas the old whd_stack didn't. - Zcase and Zfix are alwais put on stack. iota_flag is checked by constructors and cofix. - simpl uses its own whd_ function that do not touch at matched term git-svn-id: svn+ssh://scm.gforge.inria.fr/svn/coq/trunk@15634 85f007b7-540e-0410-9357-904b9bb8a0f7
* Continuing r15459: it helps testing occur-check early in someGravatar herbelin2012-07-06
| | | | | | | | | situations (see rewrite MonoidMonadTrans.bind_toLower' in Misc/QuicksortComplexity/monoid_expec.v). Also fixing badly designed test 2817.v. git-svn-id: svn+ssh://scm.gforge.inria.fr/svn/coq/trunk@15543 85f007b7-540e-0410-9357-904b9bb8a0f7
* Added an indirection with respect to Loc in Compat. As many [open Compat]Gravatar ppedrot2012-06-22
| | | | | | | | | | were closed (i.e. the only remaining ones are those of printing/parsing). Meanwhile, a simplified interface is provided in loc.mli. This also permits to put Pp in Clib, because it does not depend on CAMLP4/5 anymore. git-svn-id: svn+ssh://scm.gforge.inria.fr/svn/coq/trunk@15475 85f007b7-540e-0410-9357-904b9bb8a0f7
* Fixing bug #2817 (occur check was not done up to instantiation ofGravatar herbelin2012-06-20
| | | | | | known instances in unification.ml). This refines the fix to bug #1918. git-svn-id: svn+ssh://scm.gforge.inria.fr/svn/coq/trunk@15459 85f007b7-540e-0410-9357-904b9bb8a0f7
* Reductionops : Better abstract machine stack utilitiesGravatar pboutill2012-06-15
| | | | git-svn-id: svn+ssh://scm.gforge.inria.fr/svn/coq/trunk@15443 85f007b7-540e-0410-9357-904b9bb8a0f7
* Forward-port fixes from 8.4 (15358, 15353, 15333).Gravatar msozeau2012-06-04
| | | | git-svn-id: svn+ssh://scm.gforge.inria.fr/svn/coq/trunk@15418 85f007b7-540e-0410-9357-904b9bb8a0f7
* locus.mli for occurrences+clauses, misctypes.mli for various little thingsGravatar letouzey2012-05-29
| | | | | | | | | Corresponding operations in locusops.ml and miscops.ml The type of occurrences is now a clear algebraic one instead of a bool*list hard to understand. git-svn-id: svn+ssh://scm.gforge.inria.fr/svn/coq/trunk@15372 85f007b7-540e-0410-9357-904b9bb8a0f7
* Evar_kinds.mli containing former Evd.hole_kind, avoid deps on EvdGravatar letouzey2012-05-29
| | | | git-svn-id: svn+ssh://scm.gforge.inria.fr/svn/coq/trunk@15371 85f007b7-540e-0410-9357-904b9bb8a0f7
* Fix interface of resolve_typeclasses: onlyargs -> with_goals:Gravatar msozeau2012-03-20
| | | | | | by default typeclass resolution is not launched on goal evars. git-svn-id: svn+ssh://scm.gforge.inria.fr/svn/coq/trunk@15074 85f007b7-540e-0410-9357-904b9bb8a0f7
* Second step of integration of Program:Gravatar msozeau2012-03-14
| | | | | | | | - Remove useless functorization of Pretyping - Move Program coercion/cases code inside pretyping/, enabled according to a flag. git-svn-id: svn+ssh://scm.gforge.inria.fr/svn/coq/trunk@15033 85f007b7-540e-0410-9357-904b9bb8a0f7
* Remove support for "abstract typing constraints" that requires unicity of ↵Gravatar msozeau2012-03-14
| | | | | | | | | | | solutions to unification. Only allow bidirectional checking of constructor applications, enabled by a program_mode flag: it is backwards-incompatible due to delta-reduction, constructor parameters might get instantiated with delta-equivalent but not syntactically equivalent terms. Prepare for merging the Program-specific version of Pretyping/Cases/Coercion with the main code. git-svn-id: svn+ssh://scm.gforge.inria.fr/svn/coq/trunk@15032 85f007b7-540e-0410-9357-904b9bb8a0f7
* Noise for nothingGravatar pboutill2012-03-02
| | | | | | | | | | | Util only depends on Ocaml stdlib and Utf8 tables. Generic pretty printing and loc functions are in Pp. Generic errors are in Errors. + Training white-spaces, useless open, prlist copies random erasure. Too many "open Errors" on the contrary. git-svn-id: svn+ssh://scm.gforge.inria.fr/svn/coq/trunk@15020 85f007b7-540e-0410-9357-904b9bb8a0f7
* Continuing 14812 and 14813 (use type information to reduce theGravatar herbelin2011-12-18
| | | | | | | | | | applicability of first-order unification in tactic unification). Don't try to unify the type (this would require a unification power that unification.ml does not have - and some contribs complain about that). Just reject first-order unification of metavariables of higher-order types when their types are obviously incompatible. git-svn-id: svn+ssh://scm.gforge.inria.fr/svn/coq/trunk@14817 85f007b7-540e-0410-9357-904b9bb8a0f7
* Added a flag to control the use of typing when instantiating appliedGravatar herbelin2011-12-17
| | | | | | | meta in the tactic unification algorithm ("auto" becomes much slower if it takes into account the type of metas). git-svn-id: svn+ssh://scm.gforge.inria.fr/svn/coq/trunk@14813 85f007b7-540e-0410-9357-904b9bb8a0f7
* Added ability to take the type of applied metas into account whenGravatar herbelin2011-12-17
| | | | | | | | | | instantiating them in the unification algorithm used for tactics. This allows to discard ill-typed uses of first-order unification which otherwise would have been fatal (this incidentally allows to partially restore some compatibility with 8.3 that was broken after eta was added in unification). git-svn-id: svn+ssh://scm.gforge.inria.fr/svn/coq/trunk@14812 85f007b7-540e-0410-9357-904b9bb8a0f7
* Reorganizing Unification.unify_0 so as to more easily share codeGravatar herbelin2011-12-17
| | | | | | between branches. git-svn-id: svn+ssh://scm.gforge.inria.fr/svn/coq/trunk@14811 85f007b7-540e-0410-9357-904b9bb8a0f7
* Discarding let-ins from the instances of the evars in theGravatar herbelin2011-12-04
| | | | | | | | | | pattern-unification test. They were tolerated up to r14539. Also expanded the let-ins not bound to rel or var in the right-hand side of a term for which pattern-unification is tested (this expansion can refer to a non-let variable that has to be taken into account in the pattern-unification test). git-svn-id: svn+ssh://scm.gforge.inria.fr/svn/coq/trunk@14757 85f007b7-540e-0410-9357-904b9bb8a0f7
* Added a DEPRECATED flag in declaration of options. For now only two options ↵Gravatar ppedrot2011-11-24
| | | | | | are declared as such, but I suspect Coq to contain some more. git-svn-id: svn+ssh://scm.gforge.inria.fr/svn/coq/trunk@14724 85f007b7-540e-0410-9357-904b9bb8a0f7
* A bit of documentation around cases.ml + ML modules uselessly openGravatar herbelin2011-11-16
| | | | | | + dead code. git-svn-id: svn+ssh://scm.gforge.inria.fr/svn/coq/trunk@14660 85f007b7-540e-0410-9357-904b9bb8a0f7
* Refined second_order_matching so that a constraint on whichGravatar herbelin2011-11-08
| | | | | | | | | | | | | | | | occurrences to abstract can be given. This allows to force "destruct" to necessarily abstract over all occurrences of its main argument (only the sub-arguments that occur in the inductive type of the main argument have their occurrences constrained by typing). This incidentally avoids "rewrite" succeeding in rewriting only a part of the occurrences it has to rewrite. This repairs the failure of RecursiveDefinition which failed after pattern unification fix from r14642). Full support for selecting occurrence of main argument still to be done though. git-svn-id: svn+ssh://scm.gforge.inria.fr/svn/coq/trunk@14648 85f007b7-540e-0410-9357-904b9bb8a0f7
* Improved check is_open_canonical_projectionGravatar gareuselesinge2011-11-08
| | | | | | | | | | | | | | The check looks for 1 canonical projection applied to a meta/evar. This fails to deal with telescopes that generate unification problems containing something like "(pi_1 (pi_2 ?))" that is indeed a "stuck" canonical projection but not of the form recognized by the previous implementation. The same holds when pi_2 is a general function not producing a constructor. This patch checks if the argument of the canonical projection weak head reduces to a constructor calling whd_betadeltaiota. git-svn-id: svn+ssh://scm.gforge.inria.fr/svn/coq/trunk@14645 85f007b7-540e-0410-9357-904b9bb8a0f7
* Fixing incorrect change to pattern-unification over Meta's introducedGravatar herbelin2011-11-06
| | | | | | | | | | | | | | | in r14199 (June 2011). Meta's implicitly depend on the context they are defined in and this has to be taken into account for checking if occurrences are distinct (in particular, no Var's are allowed as arguments of a pattern-unifiable Meta). The example expected to be accepted thanks to r14199 is not a pattern-unification problem (it has more than one solution) and was anyway already accepted (strange). Compared to before r14199, aliases expansion and restriction of pattern unification check to variables occurring in the right-hand side are however now taken into account. git-svn-id: svn+ssh://scm.gforge.inria.fr/svn/coq/trunk@14642 85f007b7-540e-0410-9357-904b9bb8a0f7
* Completing r14538 (Chung-Kil Hur's trick for fast dependently-typedGravatar herbelin2011-10-11
| | | | | | | | | | | second-order matching) which was not working correctly in the general case. Also made that second-order matching for tactics (abstract_list_all) uses this algorithm, along the lines of a proposal first experimented by Dan Grayson (see unification.v). git-svn-id: svn+ssh://scm.gforge.inria.fr/svn/coq/trunk@14549 85f007b7-540e-0410-9357-904b9bb8a0f7
* Moved to a more standard order of arguments (i.e. env followed by evar_map)Gravatar herbelin2011-10-11
| | | | | | for the functions of unification.ml. git-svn-id: svn+ssh://scm.gforge.inria.fr/svn/coq/trunk@14547 85f007b7-540e-0410-9357-904b9bb8a0f7
* More robust and uniform treatment of aliases in evarutil.mlGravatar herbelin2011-10-10
| | | | | | | | | | | | | | - Compute chain of aliases once for all so as to simplify code. - In is_unification_pattern, expand all vars/rels of the unification problem until they are no longer vars/rels so that the list of vars/rels used in the rhs is correct, and, the list of arguments of the evars eventually become irreducible vars/rels (in particular, this solves bug #2615). - Some points remain unclear, e.g. whether solve_evar_evar should reason with all let-in expanded or with let-in expanded only up to the last expansion which is still a var or rel. git-svn-id: svn+ssh://scm.gforge.inria.fr/svn/coq/trunk@14539 85f007b7-540e-0410-9357-904b9bb8a0f7
* Generalizing subst_term_occ so that it supports an arbitrary matchingGravatar herbelin2011-09-26
| | | | | | | function but also restricting it to closed matching and consequently renaming it to subst_closed_term_occ. git-svn-id: svn+ssh://scm.gforge.inria.fr/svn/coq/trunk@14498 85f007b7-540e-0410-9357-904b9bb8a0f7
* Propagated information from the reduction tactics to the kernel soGravatar herbelin2011-08-10
| | | | | | | | | | | | | | | | | | | | | | | | | | | | that the kernel conversion solves the delta/delta critical pair the same way the tactics did. This allows to improve Qed time when slow down is due to conversion having (arbitrarily) made the wrong choice. Propagation is done thanks to a new kind of cast called REVERTcast. Notes: - Vm conversion not modified - size of vo generally grows because of additional casts - this remains a heuristic... for the record, when a reduction tactic is applied on the goal t leading to new goal t', this is translated in the kernel in a conversion t' <= t where, hence, reducing in t' must be preferred; what the propagation of reduction cast to the kernel does not do is whether it is preferable to first unfold c or to first compare u' and u in "c u' = c u"; in particular, intermediate casts are sometimes useful to solve this kind of issues (this is the case e.g. in Nijmegen/LinAlg/subspace_dim.v where the combination "simpl;red" needs the intermediate cast to ensure Qed answers quickly); henceforth the merge of nested casts in mkCast is deactivated - for tactic "change", REVERTcast should be used when conversion is in the hypotheses, but convert_hyp does not (yet) support this (would require e.g. that convert_hyp overwrite some given hyp id with a body-cleared let-binding new_id := Cast(old_id,REVERTCast,t)) git-svn-id: svn+ssh://scm.gforge.inria.fr/svn/coq/trunk@14407 85f007b7-540e-0410-9357-904b9bb8a0f7
* Fix unification: detect invalid evar instantiations due to scoping earlier.Gravatar msozeau2011-08-04
| | | | | | Add a debug printer for existential sets (used for frozen_evars in w_unify). git-svn-id: svn+ssh://scm.gforge.inria.fr/svn/coq/trunk@14384 85f007b7-540e-0410-9357-904b9bb8a0f7
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