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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.
git-svn-id: svn+ssh://scm.gforge.inria.fr/svn/coq/trunk@12440 85f007b7-540e-0410-9357-904b9bb8a0f7
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git-svn-id: svn+ssh://scm.gforge.inria.fr/svn/coq/trunk@12337 85f007b7-540e-0410-9357-904b9bb8a0f7
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scripts.
git-svn-id: svn+ssh://scm.gforge.inria.fr/svn/coq/trunk@11839 85f007b7-540e-0410-9357-904b9bb8a0f7
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git-svn-id: svn+ssh://scm.gforge.inria.fr/svn/coq/trunk@11684 85f007b7-540e-0410-9357-904b9bb8a0f7
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dance when defining a new program by default, which forces use of JMeq
but makes for much more robust tactics. Everything in success/Equations
works except for limitations due to JMeq or the guardness checker (one
example seems to actually diverge...).
git-svn-id: svn+ssh://scm.gforge.inria.fr/svn/coq/trunk@11402 85f007b7-540e-0410-9357-904b9bb8a0f7
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when one wants a particular type. Rewrite of the unification behind
[Equations], much more robust but still buggy w.r.t. inaccessible
patterns.
git-svn-id: svn+ssh://scm.gforge.inria.fr/svn/coq/trunk@11399 85f007b7-540e-0410-9357-904b9bb8a0f7
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git-svn-id: svn+ssh://scm.gforge.inria.fr/svn/coq/trunk@11396 85f007b7-540e-0410-9357-904b9bb8a0f7
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dependent [noConfusion] definitions in "A Few Constructions on
Constructors". Now the guardness check is blocking.
git-svn-id: svn+ssh://scm.gforge.inria.fr/svn/coq/trunk@11374 85f007b7-540e-0410-9357-904b9bb8a0f7
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support for "where" notation declarations as well. Better checking of
recursivity or not, after type-checking.
git-svn-id: svn+ssh://scm.gforge.inria.fr/svn/coq/trunk@11354 85f007b7-540e-0410-9357-904b9bb8a0f7
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definition is recursive or not based on occurence of a rec call in
the body. Examples updated, enjoy!
git-svn-id: svn+ssh://scm.gforge.inria.fr/svn/coq/trunk@11353 85f007b7-540e-0410-9357-904b9bb8a0f7
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equations.
It is essentially an implementation of the "Eliminating Dependent
Pattern-Matching" paper by Goguen, McBride and McKinna, relying on the
new dependent eliminations tactics. The bulk is in
contrib/subtac/equations.ml4. It implements a tree splitting on a set of
clauses and the generation of a corresponding proof term along with some
obligations at each splitting node. The obligations are solved by
driving the dependent elimination tactic and you get a complete proof
term at the end with the code given by the equations at the right spots,
the rest of the cases being pruned automatically.
Does not support recursion yet, a file with examples is in the
test-suite. With recursion, it would be similar to Agda 2's pattern
matching, except it won't reduce in Coq due to JMeq's/K.
Incidentally, the simplification tactics after dependent elimination
have been improved, resulting in a clearer and more space efficient
implementation.
git-svn-id: svn+ssh://scm.gforge.inria.fr/svn/coq/trunk@11352 85f007b7-540e-0410-9357-904b9bb8a0f7
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