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This module collects the functions of Nameops which are about Name.t
and somehow standardize or improve their name, resulting in particular
from discussions in working group.
Note the use of a dedicated exception rather than a failwith for
Nameops.Name.out.
Drawback of the approach: one needs to open Nameops, or to use long
prefix Nameops.Name.
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We want to avoid capture in "Inductive I {A} := C : forall A, I".
But in "Record I {A} := { C : forall A, A }.", non recursivity ensures
that no clash will occur.
This fixes previous commit, with which it could possibly be merged.
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For instance, the following was failing to use the implicitness of n:
Inductive A (P:forall m {n}, n=m -> Prop) := C : P 0 eq_refl -> A P.
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This allows a better control on the name to give to an evar and, in
particular, to address the issue about naming produced by "epose
proof" in one of the comment of Zimmi48 at PR #248 (see file names.v).
Incidentally updating output of Show output test (evar numbers shifted).
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This is the continuation of #244, we now deprecate `CErrors.error`,
the single entry point in Coq is `user_err`.
The rationale is to allow for easier grepping, and to ease a future
cleanup of error messages. In particular, we would like to
systematically classify all error messages raised by Coq and be sure
they are properly documented.
We restore the two functions removed in #244 to improve compatibility,
but mark them deprecated.
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We remove redundant functions `coq_constant`, `gen_reference`, and
`gen_constant`.
This is a first step towards a lazy binding of libraries references.
We have also chosen to untangle `constr` from `Coqlib`, as how to
instantiate the reference (in particular wrt universes) is a
client-side issue. (The client may want to provide an `evar_map` ?)
c.f. #186
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let-ins
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Following @gasche idea, and the original intention of #402, we switch
the main parsing AST of Coq from `'a Loc.located` to `'a CAst.ast`
which is private and record-based.
This provides significantly clearer code for the AST, and is robust
wrt attributes.
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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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This is the second patch, which is a bit more invasive. We reasoning
is similar to the previous patch.
Code is not as clean as it could as we would need to convert
`glob_constr` to located too, then a few parts could just map the
location.
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Today, both modes are controlled by a single flag, however this is a
bit misleading as is_silent really means "quiet", that is to say `coqc
-q` whereas "verbose" is Coq normal operation.
We also restore proper behavior of goal printing in coqtop on quiet
mode, thanks to @Matafou for the report.
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record fields.
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- Supporting let-ins in tactic "fix", and hence in interactive
Fixpoint and mutual theorems.
- Documenting more precisely the meaning of n in tactic "fix id n".
- Fixing computation of recursive index at interpretation time in the
presence of let-ins.
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in the presence of let-ins.
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For now we only normalize sorts, and we leave instances for the next
commit.
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This is a patch fulfilling the relevant remark of Maxime that an
explicit information at the ML type level would be better than "cast
surgery" to carry the optional type of a let-in.
There are a very few semantic changes.
- a "(x:t:=c)" in a block of binders is now written in the more
standard way "(x:=c:t)"
- in notations, the type of a let-in is not displayed if not
explicitly asked so.
See discussion at PR #417 for more information.
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RawLocal -> CLocal
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This is a bit long, but it is to keep a symmetry with constr_expr.
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Deprecating abstract_constr_expr in favor of mkCLambdaN,
prod_constr_expr in favor of mkCProdN.
Note: They did not do exactly the same, the first ones were
interpreting "(x y z:_)" as "(x:_) (y:_) (z:_)" while the second ones
were preserving the original sharing of the type, what I think is the
correct thing to do.
So, there is also a "fix" of semantic here.
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All functions where actually called with the second argument of the pending
problem being the current evar map. We simply remove this useless and
error-prone second component.
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It was always set to `greedy:true`.
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Currently, the STM, vernac interpretation, and the toplevel are
intertwined in a mutual dependency that needs to be resolved using
imperative callbacks.
This is problematic for a few reasons, in particular it makes the
interpretation of commands that affect the document quite intricate.
As a first step, we split the `toplevel/` directory into two: "pure"
vernac interpretation is moved to the `vernac/` directory, on which
the STM relies.
Test suite passes, and only one command seems to be disabled with this
approach, "Show Script" which is to my understanding
obsolete. Subsequent commits will fix this and refine some of the
invariants that are not needed anymore.
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