| Commit message (Collapse) | Author | Age |
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Also taking into account a name in the return clause and in the
indices.
Note the double meaning ``bound as a term to match'' and ``binding in
the "as" clause'' when the term to match is a variable for all of
"match", "if" and "let".
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This allows e.g. to use the record notations even when there are
defined fields.
A priori fixed also missing parameters when interpreting primitive
tokens.
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When trying different possible return predicates, returns the error
given by the first try, assuming this is the most interesting one.
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default. Interestingly, there is an example where it makes the rest of
the proof less natural.
Goal forall x y:Z, ...
intros [y|p1[|p2|p2]|p1[|p2|p2]].
where case analysis on y is not only in the 2nd and 3rd case, is not
anymore easy to do.
Still, I find the bracketing of intro-patterns a natural property, and
its generalization in all situations a natural expectation for
uniformity. So, what to do? The following is e.g. not as compact and
"one-shot":
intros [|p1|p1]; [intros y|intros [|p2|p2] ..].
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but the internal representation dropped let-in.
Ideally, the internal representation of the "match" should use
contexts for the predicate and the branches. This would however be a
rather significant change. In the meantime, just a hack.
To do, there is still an extra @ in the constructor name that does not
need to be there.
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because of let-in's interpreted as being part of the expansion).
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In interp/constrintern.ml, '_' for constructor parameter are required if you use
AppExpl ('@Constr') and added in order to be erased at the last time if you do not
use '@'.
It makes the use of notation in pattern more permissive. For example,
-8<------
Inductive I (A: Type) : Type := C : A -> I A.
Notation "x <: T" := (C T x) (at level 38).
Definition uncast A (x : I A) :=
match x with
| x <: _ => x
end.
-8<------
was forbidden.
Backward compatibility is strictly preserved expect for syntactic definitions:
While defining "Notation SOME = @Some", SOME had a special treatment and used to
be an alias of Some in pattern. It is now uniformly an alias of @Some ('_' must be
provided for parameters).
In interp/constrextern.ml, except if all the parameters are implicit and all the
arguments explicit (This covers all the cases of the test-suite), pattern are
generated with AppExpl (id est '@') (so with '_' for parameters) in order to
become compatible in any case with future behavior.
git-svn-id: svn+ssh://scm.gforge.inria.fr/svn/coq/trunk@14909 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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git-svn-id: svn+ssh://scm.gforge.inria.fr/svn/coq/trunk@11641 85f007b7-540e-0410-9357-904b9bb8a0f7
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filtrage; sauts de line intempestifs dans pretty.ml)
git-svn-id: svn+ssh://scm.gforge.inria.fr/svn/coq/trunk@10179 85f007b7-540e-0410-9357-904b9bb8a0f7
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the latter is bound to a var which is not a quantified one - this led
to remove a line marked "temporary compatibility" ... ; made a distinction
between quantified hypothesis as for "intros until" and binding names as
in "apply with"; in both cases, we now expect that a identifier not used
as a variable, as in "apply f_equal with f:=g" where "f" is a true binder
name in f_equal, must not be used as a variable elsewhere [see
corresponding change in Ints/Tactic.v])
- Fixing bug 1643 (bug in the algorithm used to possibly reuse a
global name in the recursive calls of a coinductive term)
- Fixing bug 1699 (bug in contracting nested patterns at printing time
when the return clause of the subpatterns is dependent)
- Fixing bug 1697 (bug in the TacAssert clause of Tacinterp.subst_tactic)
- Fixing bug 1678 (bug in converting constr_pattern to constr in Constrextern)
git-svn-id: svn+ssh://scm.gforge.inria.fr/svn/coq/trunk@10131 85f007b7-540e-0410-9357-904b9bb8a0f7
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git-svn-id: svn+ssh://scm.gforge.inria.fr/svn/coq/trunk@7693 85f007b7-540e-0410-9357-904b9bb8a0f7
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point-fixe
git-svn-id: svn+ssh://scm.gforge.inria.fr/svn/coq/trunk@3504 85f007b7-540e-0410-9357-904b9bb8a0f7
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Hugo Herbelin
Maxime Dénès
pboutill
glondu
msozeau
herbelin