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eta-expansion of "match" branches
Reviewed-by: gares
Ack-by: ppedrot
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This is extracted from #9710, where we need the environment anyway to compute
iota rules on inductive types with let-bindings. The commit is self-contained,
so I think it could go directly in to save me a few rebases.
Furthermore, this is also related to #11707. Assuming we split cbn from the
other reduction machine, this allows to merge the "local" machine with
the general one, since after this PR they will have the same type. One less
reduction machine should make people happy.
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Porting them is still to be done, but at least we don't rely on the wrapper
everywhere.
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Ack-by: SkySkimmer
Reviewed-by: maximedenes
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This completes a pure Dune bootstrap of Coq.
There is still the question if we should modify `coqdep` so it does
output a dependency on `Init.Prelude.vo` in certain cases.
TODO: We still double-add `theories` and `plugins` [in coqinit and in
Dune], this should be easy to clean up.
Setting `libs_init_load_path` does give a correct build indeed;
however we still must call this for compatibility?
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This corresponds more naturally to the use we make of them, as we don't need
fast indexation but we instead keep pushing terms on top of them.
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Add headers to a few files which were missing them.
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We do two changes:
- We distinguish between a notion of format generically attached to
notations and a new notion of format attached to interpreted
notations. "Reserved Notation" attaches a format
generically. "Notation" attaches the format specifically to the given
interpretation, and additionally, attaches it generically if it is the
first time the notation is defined.
- We warn before overriding an explicitly reserved generic format, or
a specific format.
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Currently, `.v` under the `Coq.` prefix are found in both `theories`
and `plugins`. Usually these two directories are merged by special
loadpath code that allows double-binding of the prefix.
This adds some complexity to the build and loadpath system; and in
particular, it prevents from handling the `Coq.*` prefix in the
simple, `-R theories Coq` standard way.
We thus move all `.v` files to theories, leaving `plugins` as an
OCaml-only directory, and modify accordingly the loadpath / build
infrastructure.
Note that in general `plugins/foo/Foo.v` was not self-contained, in
the sense that it depended on files in `theories` and files in
`theories` depended on it; moreover, Coq saw all these files as
belonging to the same namespace so it didn't really care where they
lived.
This could also imply a performance gain as we now effectively
traverse less directories when locating a library.
See also discussion in #10003
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Reviewed-by: Zimmi48
Reviewed-by: ppedrot
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The standard use is to repeat the option keywords in lowercase, which
is basically useless.
En passant add doc entry for Dump Arith.
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Instead of various termops and globnames aliases.
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We also remove trailing whitespace.
Script used:
```bash
for i in `find . -name '*.ml' -or -name '*.mli' -or -name '*.mlg'`; do expand -i "$i" | sponge "$i"; sed -e's/[[:space:]]*$//' -i.bak "$i"; done
```
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Beware of 0. = -0. issue for primitive floats
The IEEE 754 declares that 0. and -0. are treated equal but we cannot
say that this is true with Leibniz equality.
Therefore we must patch the equality and the total comparison inside the
kernel to prevent inconsistency.
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We move `binder_kind` to the pretyping AST, removing the last data
type in the now orphaned file `Decl_kinds`.
This seems a better fit, as this data is not relevant to the lower
layers but only used in `Impargs`.
We also move state keeping to `Impargs`, so now implicit declaration
must include the type. We also remove a duplicated function.
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Not pretty, but it had to be done some day, as `Globnames` seems to be
on the way out.
I have taken the opportunity to reduce the number of `open` in the
codebase.
The qualified style would indeed allow us to use a bit nicer names
`GlobRef.Inductive` instead of `IndRef`, etc... once we have the
tooling to do large-scale refactoring that could be tried.
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This impacts a lot of code, apparently in the good, removing several
conversions back and forth constr.
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The current situation is a mess, some functions set it by default, but other
no. Making it mandatory ensures that the expected value is the correct one.
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This should make https://github.com/coq/coq/pull/9129 easier.
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Kernel should be mostly correct, higher levels do random stuff at
times.
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Now the main functions are unify (solves the problems entirely) and
unify_delay and unify_leq (which might leave some unsolved constraints).
Deprecated the_conv_x and the_conv_x_leq (which were misnommers as they
do unification not conversion).
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This work makes it possible to take advantage of a compact
representation for integers in the entire system, as opposed to only
in some reduction machines. It is useful for heavily computational
applications, where even constructing terms is not possible without such
a representation.
Concretely, it replaces part of the retroknowledge machinery with
a primitive construction for integers in terms, and introduces a kind of
FFI which maps constants to operators (on integers). Properties of these
operators are expressed as explicit axioms, whereas they were hidden in
the retroknowledge-based approach.
This has been presented at the Coq workshop and some Coq Working Groups,
and has been used by various groups for STM trace checking,
computational analysis, etc.
Contributions by Guillaume Bertholon and Pierre Roux <Pierre.Roux@onera.fr>
Co-authored-by: Benjamin Grégoire <Benjamin.Gregoire@inria.fr>
Co-authored-by: Vincent Laporte <Vincent.Laporte@fondation-inria.fr>
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This commit fixes a leftover of the merge of ssrmatching where
the .ml code received the appropriate banner, while the .v and
.mli di dnot.
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This is a pre-requisite to use automated formatting tools such as
`ocamlformat`, also, there were quite a few places where the comments
had basically no effect, thus it was confusing for the developer.
p.s: Reading some comments was a lot of fun :)
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We remove a few aliases present in the lower layers
[`Genintern/Tactypes`] from `Tacexpr`.
IMHO this enlarges the API for no good purpose, and difficults
analysis.
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We remove the `Proof_types` file which was a trivial stub, we also
cleanup a few layers of aliases.
This is not a lot but every little step helps.
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This makes the make-based build system stop linking to Camlp5's
gramlib and instead links to our own gramlib.
We use the style done in the packing of `Stdlib` in OCaml 4.07.
As to introduce a minimal amount of noise in history we use an
autogenerated `gramlib__pack` directory.
Co-authored-by: Gaëtan Gilbert <gaetan.gilbert@skyskimmer.net>
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This provides several advantages to people serializing tactic
scripts. Appearance of the involved constructors is common enough as
to bother to submit this PR.
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Deletes the SsrProfiling and SsrMatchingProfiling options
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This introduces a bit of noise in the Dune files but for now I think
it is the best way to do it.
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This avoids all the side effects associated with the manipulation of an
unresolvable flag. In the new design:
- The evar_map stores a set of evars that are candidates for typeclass
resolution, which can be retrieved and set.
We maintain the invariant that it always contains only undefined
evars.
- At the creation time of an evar (new_evar), we classify it as a
potential candidate of resolution.
- This uses a hook to test if the conclusion ends in a typeclass
application. (hook set in typeclasses.ml)
- This is an approximation if the conclusion is an existential (i.e.
not yet determined). In that case we register the evar as
potentially a typeclass instance, and later phases must consider
that case, dropping the evar if it is not a typeclass.
- One can pass the ~typeclass_candidate:false flag to new_evar to
prevent classification entirely. Typically this is for new goals
which should not ever be considered to be typeclass resolution
candidates.
- One can mark a subset of evars unresolvable later if
needed. Typically for clausenv, and marking future goals as
unresolvable even if they are typeclass goals. For clausenv for
example, after turing metas into evars we first (optionally) try a
typeclass resolution on the newly created evars and only then mark
the remaining newly created evars as subgoals. The intent of the
code looks clearer now.
This should prevent keeping testing if undefined evars are classes
all the time and crawling large sets when no typeclasses are present.
- Typeclass candidate evars stay candidates through
restriction/evar-evar solutions.
- Evd.add uses ~typeclass_candidate:false to avoid recomputing if the new
evar is a candidate. There's a deficiency in the API, in most use
cases of Evd.add we should rather use a:
`Evd.update_evar_info : evar_map -> Evar.t -> (evar_info -> evar_info)
-> evar_map`
Usually it is only about nf_evar'ing the evar_info's contents, which
doesn't change the evar candidate status.
- Typeclass resolution can now handle the set of candidates
functionally: it always starts from the set of candidates (and not the
whole undefined_map) and a filter on it, potentially splitting it in
connected components, does proof search for each component in an
evar_map with an empty set of typeclass evars (allowing clean
reentrancy), then reinstates the potential remaining unsolved
components and filtered out typeclass evars at the end of
resolution.
This means no more marking of resolvability/unresolvability
everywhere, and hopefully a more efficient implementation in general.
- This is on top of the cleanup of evar_info's currently but can
be made independent.
[typeclasses] Fix cases.ml: none of the new_evars should be typeclass candidates
Solve bug in inheritance of flags in evar-evar solutions.
Renaming unresolvable to typeclass_candidate (positive) and fix maybe_typeclass_hook
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