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- move_location to proofs/logic.
- intro_pattern_naming to Namegen.
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Example which is now reprinted as parsed:
fun '((x,y) as z) => (y,x)=z
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For instance, the following is now possible:
Check {(x,y)|x+y=0}.
Some questions remains. Maybe, by consistency, the notation should be
"{'(x,y)|x+y=0}"...
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The motivations are:
- To reflect the concrete syntax more closely.
- To factorize the different places where "contexts" are internalized:
before this patch, there is a different treatment of `Definition f
'(x,y) := x+y` and `Definition f := fun '(x,y) => x+y`, and a hack
to interpret `Definition f `pat := c : t`. With the patch, the fix
to avoid seeing a variable named `pat` works for both `fun 'x =>
...` and `Definition f 'x := ...`.
The drawbacks are:
- Counterpart to reflecting the concrete syntax more closerly, there
are more redundancies in the syntax. For instance, the case `CLetIn
(na,b,t,c)` can appears also in the form `CProdN (CLocalDef
(na,b,t)::rest,d)` and `CLambdaN (CLocalDef (na,b,t)::rest,d)`.
- Changes in the API, hence adaptation of plugins referring to `constr_expr` needed.
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This will allow to merge back `Names` with `API.Names`
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To this extent we factor out the relevant bits to a new file,
ltac_pretype.
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The old algorithm was relying on list membership, which is O(n). This was
nefarious for terms with many binders. We use instead sets in O(log n).
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The internal detype function takes an additional arguments dictating
whether it should be eager or lazy.
We introduce a new type of delayed `DAst.t` AST nodes and use it for
`glob_constr`.
Such type, instead of only containing a value, it can contain a lazy
computation too. We use a GADT to discriminate between both uses
statically, so that no delayed terms ever happen to be
marshalled (which would raise anomalies).
We also fix a regression in the test-suite:
Mixing laziness and effects is a well-known hell. Here, an exception
that was raised for mere control purpose was delayed and raised at a
later time as an anomaly. We make the offending function eager.
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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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We get rid of a complex function doing both an incremental comparison
and an effect on names (Notation_ops.compare_glob_constr).
For the effect on names, it was actually already done at the time of
turning glob_constr to notation_constr, so it could be skipped here.
For the comparison, we rely on a new incremental variant of
Glob_ops.glob_eq_constr (thanks to Gaëtan for getting rid of the
artificial recursivity in mk_glob_constr_eq).
Seizing the opportunity to get rid of catch-all clauses in
pattern-matching (as advocated by Maxime). Also make indentation
closer to the one of other functions.
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This completes the Loc.ghost removal, the idea is to gear the API
towards optional, but uniform, location handling.
We don't print <unknown> anymore in the case there is no location.
This is what the test suite expects.
The old printing logic for located items was a bit inconsistent as
it sometimes printed <unknown> and other times it printed nothing as
the caller checked for `is_ghost` upstream.
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Now it is a private field, locations are optional.
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Binding generalizable_vars_of_glob_constr, occur_glob_constr,
free_glob_vars, and bound_glob_vars on it.
Most of the functions of which it factorizes the code were bugged with
respect to bindings in the return clause of "match" and in either the
types or the bodies of "fix/cofix".
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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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A couple of bugs have been found.
Example #4932 is now printing correctly in the presence of multiple
binders (when no let-in, no irrefutable patterns).
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On the user side, coqtop and coqc take a list of warning names or categories
after -w. No prefix means activate the warning, a "-" prefix means deactivate
it, and "+" means turn the warning into an error. Special categories include
"all", and "default" which contains the warnings enabled by default.
We also provide a vernacular Set Warnings which takes the same flags as argument.
Note that coqc now prints warnings.
The name and category of a warning are printed with the warning itself.
On the developer side, Feedback.msg_warning is still accessible, but the
recommended way to print a warning is in two steps:
1) create it by:
let warn_my_warning =
CWarnings.create ~name:"my-warning" ~category:"my-category"
(fun args -> Pp.strbrk ...)
2) print it by:
warn_my_warning args
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while eta-expanding a notation) + a more serious variant of it
(alpha-conversion incorrect wrt eta-expansion).
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Collecting the bound variables is now done on the glob_constr, before
interpretation, so that only variables given explicitly by the user
are used for binding bound variables.
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The core is a "detyping" function for [closed_glob_constr]. Which interpretes the variable names according to the Ltac context, and apply the standard detyping procedure to typed terms in the closure.
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With ocaml 4.01, the 'unused open' warning also checks the mli :-)
Beware: some open are reported as useless when compiling with camlp5,
but are necessary for compatibility with camlp4. These open are now
marked with a comment.
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NB: new file miscprint.ml deserves to be part of printing.cma,
but should be part of proofs.cma for the moment, due to use in logic.ml
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git-svn-id: svn+ssh://scm.gforge.inria.fr/svn/coq/trunk@16463 85f007b7-540e-0410-9357-904b9bb8a0f7
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git-svn-id: svn+ssh://scm.gforge.inria.fr/svn/coq/trunk@16099 85f007b7-540e-0410-9357-904b9bb8a0f7
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git-svn-id: svn+ssh://scm.gforge.inria.fr/svn/coq/trunk@16071 85f007b7-540e-0410-9357-904b9bb8a0f7
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git-svn-id: svn+ssh://scm.gforge.inria.fr/svn/coq/trunk@15995 85f007b7-540e-0410-9357-904b9bb8a0f7
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git-svn-id: svn+ssh://scm.gforge.inria.fr/svn/coq/trunk@15715 85f007b7-540e-0410-9357-904b9bb8a0f7
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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
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git-svn-id: svn+ssh://scm.gforge.inria.fr/svn/coq/trunk@15392 85f007b7-540e-0410-9357-904b9bb8a0f7
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Stuff about reductions now in genredexpr.mli, operations in redops.ml
git-svn-id: svn+ssh://scm.gforge.inria.fr/svn/coq/trunk@15374 85f007b7-540e-0410-9357-904b9bb8a0f7
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Emilio Jesus Gallego Arias
Théo Zimmermann
Hugo Herbelin
Pierre-Marie Pédrot
Maxime Dénès
Arnaud Spiwack
Pierre Letouzey
ppedrot
herbelin
letouzey