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- fix bug #1952.
git-svn-id: svn+ssh://scm.gforge.inria.fr/svn/coq/trunk@12668 85f007b7-540e-0410-9357-904b9bb8a0f7
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Update Numbers that was implicitely using [simpl_relation] instead of
the default tactic [program_simpl].
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NB: the grammar entry is placed in vernac:command on purpose
even if it should have gone into vernac:gallina_ext. Camlp4
isn't factorising rules starting by "Declare" in a correct way
otherwise...
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- 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?
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We renounced to distribute evars to constr and bindings and to let
tactics do the merge. There are now two disciplines:
- the general case is that the holes in tactic arguments are pushed to
the general sigma of the goal so that tactics have no such low-level
tclEVARS, Evd.merge, or check_evars to do:
- what takes tclEVARS and check_evars in charge is now a new
tactical of name tclWITHHOLES (this tactical has a flag to support
tactics in either the "e"- mode and the non "e"- mode);
- the merge of goal evars and holes is now done generically at
interpretation time (in tacinterp) and as a side-effect it also
anticipates the possibility to refer to evars of the goal in the
arguments;
- with this approach, we don't need such constr/open_constr or
bindings/ebindings variants and we can get rid of all ugly
inj_open-style coercions;
- some tactics however needs to have the exact subset of holes known;
this is the case e.g. of "rewrite !c" which morally reevaluates c at
each new rewriting step; this kind of tactics still receive a
specific sigma around their arguments and they have to merge evars
and call tclWITHHOLES by themselves.
Changes so that each specific tactics can take benefit of this generic
support remain to be done.
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induction using not v8.2 version of subst. By default functional induction uses new version of subst
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Also removed used of local_binders_length and local_assums_length
which are now incorrect due to the possible presence of `{ ... } contexts.
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- made the new "subst'" the default by renaming it "subst";
- renamed old "subst" into "simple subst";
- add option for non-rewriting of dependent proofs in general_rewrite and co
- kept use of dependent proofs in the "subst" call of "functional
induction", in spite it introduced incompatibilities (in Compcert).
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in */*/vo.itarget
On the way: no more -fsets (yes|no) and -reals (yes|no) option of configure
if you want a partial build, make a specific rule such as theories-light
Beware: these vo.itarget should not contain comments. Even if this is legal
for ocamlbuild, the $(shell cat ...) we do in Makefile can't accept that.
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- no more plugins/interface
- a few missing files in theories.itarget
- a few things required Unix now
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apart for a few non-exhaustive patterns, there was also some unused
let-in variables. Hard to check whether the apparently useless code
is doing some side-effect or not... It seems not, so I've removed
completely the corresponding code. Frederic, is that ok ?
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- fixed misunderstanding of the role of nenv while simplifying code of
occur_id in namegen.ml,
- documented the possible incompatibilites in CHANGES
- fixed output/Naming.v test, and fixed the count of misc. tests in
test-suite/check.
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It has moved to the contribs (Sophia-Antipolis/Interface).
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- backtrack on incompatibility introduced in intro while trying to
simplify the condition about when to restart the subscript of a name
(the legacy says: find a new name from x0 if the name xN exists in
the context but find a new name from xN+1 if the name xN does not
exists in the context but is a global to avoid).
- made the names chosen by "intro" compliant with the ones printed in
the goal and used for "intros until" (possible source of rare
incompatibilities) [replaced the use of visibly_occur_id for
printing the goal into a call to next_name_away_in_goal]
- also made the names internal to T in "T -> U" printed the same in
the goal as they are while printing T after it is introducted in the
hypotheses [non contravariant propagation of boolean isgoal in
detype_binder]
- simplified a bit visibly_occur_id (the Rel and Var cases were useless as
soon as the avoid list contained the current env); still this function is
costly with polynomial time in the depth of binders
- see file output/Naming.v for examples
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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.
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naming heuristic). Added a corresponding test.
Note: maybe should the generated .v file for exporting the theory be made
of a valid ident if ever coqdoc eventually follows coq convention:
currently it has name foo.theory.v which is not coqc-compilable.
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Any place where <: was legal can now contain many <: declarations.
Moreover we can say that the module type we are declaring is a subtype
of an earlier module type. See DecidableType2 for examples.
Also try to handle correctly the freeze/unfreeze summaries
when simulating start/include/end (syntax ... := ... <+ ...)
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"Module M (...) := M1 <+ M2 <+ M3 <+ ..." is now a shortcut for
"Module M (...). Include M1. Include M2. Include M3... End M."
Moreover M2,M3,etc can be functors as long as they find what they need in what
comes before them (see new command "Include Self").
The only real constraint is that M1,M2,M3,... should not have common elements
(for the moment (?)).
Same behavior for signature : Module Type M := M1 <+ M2 <+ M3.
Note that this <+ is _not_ a primitive construct of the module language,
for instance it cannot be used in signature (Module M <: M1 <+ M2 is
illegal for the moment).
Some example of use in Decidable2 and NZAxioms
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on the way:
- Added a testsuite output file
- Try to avoid nasty unfolding (fix nfun ...) in type of I31.
Idealy we would need a "Eval compute in" for the type of a inductive
constructor
- Stop opening Scopes for BigQ, BigN, BigZ by default
The user should do some Open Scope.
TODO: there's a bug that prevent BigQ.opp to have arg in bigQ_scope
(and so on for other operations), even with some Bind Scope around.
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- Cleaning and uniformisation in command.ml:
- For better modularity and better visibility, two files got isolated
out of command.ml:
- lemmas.ml is about starting and saving a proof
- indschemes.ml is about declaring inductive schemes
- Decomposition of the functions of command.ml into a functional part
and the imperative part
- Inductive schemes:
- New architecture in ind_tables.ml for registering scheme builders,
and for sharing and generating on demand inductive schemes
- Adding new automatically generated equality schemes (file eqschemes.ml)
- "_congr" for equality types (completing here commit 12273)
- "_rew_forward" (similar to vernac-level eq_rect_r), "_rew_forward_dep",
"_rew_backward" (similar to eq_rect), "_rew_backward_dep" for
rewriting schemes (warning, rew_forward_dep cannot be stated following
the standard Coq pattern for inductive types: "t=u" cannot be the
last argument of the scheme)
- "_case", "_case_nodep", "_case_dep" for case analysis schemes
- Preliminary step towards discriminate and injection working on any
equality-like type (e.g. eq_true)
- Restating JMeq_congr under the canonical form of congruence schemes
- Renamed "Set Equality Scheme" into "Set Equality Schemes"
- Added "Set Rewriting Schemes", "Set Case Analysis Schemes"
- Activation of the automatic generation of boolean equality lemmas
- Partial debug and error messages improvements for the generation of
boolean equality and decidable equality
- Added schemes for making dependent rewrite working (unfortunately with
not a fully satisfactory design - see file eqschemes.ml)
- Some names of ML function made more regular (see dev/doc/changes.txt)
- Incidentally, added a flush to obsolete Local/Global syntax warning
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Fixed pretty printing of record syntax.
Allowed record syntax inside patterns. (Patch by Cedric Auger.)
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- A richer OrderedTypeFull interface : OrderedType + predicate "le"
- Implementations {Nat,N,P,Z,Q}OrderedType.v, also providing "order" tactics
- By the way: as suggested by S. Lescuyer, specification of compare is
now inductive
- GenericMinMax: axiomatisation + properties of min and max out of
OrderedTypeFull structures.
- MinMax.v, {Z,P,N,Q}minmax.v are specialization of GenericMinMax,
with also some domain-specific results, and compatibility layer
with already existing results.
- Some ML code of plugins had to be adapted, otherwise wrong "eq",
"lt" or simimlar constants were found by functions like coq_constant.
- Beware of the aliasing problems: for instance eq:=@eq t instead of
eq:=@eq M.t in Make_UDT made (r)omega stopped working (Z_as_OT.t
instead of Z in statement of Zmax_spec).
- Some Morphism declaration are now ambiguous: switch to new syntax
anyway.
- Misc adaptations of FSets/MSets
- Classes/RelationPairs.v: from two relations over A and B, we
inspect relations over A*B and their properties in terms of classes.
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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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variables with syntax:
[Local?|Global] Generalizable Variable(s)? [all|none|id1 idn].
By default no variable is generalizable, so this patch breaks backward
compatibility with files that used implicit generalization (through
Instance declarations for example). To get back the old behavior, one
just needs to use [Global Generalizable Variables all].
Make coq_makefile more robust using [mkdir -p].
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- Clarification and documentation of the different styles of
Local/Global modifiers in vernacexpr.ml
- Addition of Global in sections for Open/Close Scope.
- Addition of Local for Ltac when not in sections.
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1- Management of the name-space in a modular development / sharing of non-logical objects.
2- Performance of atomic module operations (adding a module to the environment, subtyping ...).
1-
There are 3 module constructions which derive equalities on fields from a module to another:
Let P be a module path and foo a field of P
Module M := P.
Module M.
Include P.
...
End M.
Declare Module K : S with Module M := P.
In this 3 cases we don't want to be bothered by the duplication of names.
Of course, M.foo delta reduce to P.foo but many non-logical features of coq
do not work modulo conversion (they use eq_constr or constr_pat object).
To engender a transparent name-space (ie using P.foo or M.foo is the same thing)
we quotient the name-space by the equivalence relation on names induced by the
3 constructions above.
To implement this, the types constant and mutual_inductive are now couples of
kernel_names. The first projection correspond to the name used by the user and the second
projection to the canonical name, for example the internal name of M.foo is
(M.foo,P.foo).
So:
*************************************************************************************
* Use the eq_(con,mind,constructor,gr,egr...) function and not = on names values *
*************************************************************************************
Map and Set indexed on names are ordered on user name for the kernel side
and on canonical name outside. Thus we have sharing of notation, hints... for free
(also for a posteriori declaration of them, ex: a notation on M.foo will be
avaible on P.foo). If you want to use this, use the appropriate compare function
defined in name.ml or libnames.ml.
2-
No more time explosion (i hoppe) when using modules i have re-implemented atomic
module operations so that they are all linear in the size of the module. We also
have no more unique identifier (internal module names) for modules, it is now based
on a section_path like mechanism => we have less substitutions to perform at require,
module closing and subtyping but we pre-compute more information hence if we instanciate
several functors then we have bigger vo.
Last thing, the checker will not work well on vo(s) that contains one of the 3 constructions
above, i will work on it soon...
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not refreshed late enough).
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Instead of failing with some obscure error message *after* loading the
module, accept Local Declare ML Module with the usual semantics.
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1) compilation of Library.tex was failing on a "Ext_" in Diaconescu.v
In fact coqdoc was trying to recognize the end of a _emphasis_ and
hence inserted a bogus }. For the moment I've enclosed the phrase
with [ ], but this emphasis "feature" of coqdoc seems _really_
easy to broke. Matthieu ?
2) By the way, this Library document was made from latin1 and utf8
source file, hence bogus characters. All .v containing special
characters are converted to utf8, and their first line is now
mentionning this. (+ killed some old french comments and some
other avoidable special characters).
PLEASE: let's stick to this convention and avoid latin1, at least
in .v files.
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termination bug
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