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We'd like to cleanup the `proof_end` type so we can have a smaller
path in proof save. Note that the construction:
```
Goal Type.
⋮
Save id.
```
has to be handled by the STM in the same path as Defined (but with an
opaque flag), as `Save id` will alter the environment and cannot be
processed in parallel.
We thus try to simply such paths a bit, as complexity of `lemmas.ml`
seems like an issue these days. The form `Save Theorem id` doesn't
really seem used, and moreover we should really add a type of "Goal",
and unify syntax.
It is often the case that beginners try `Goal addnC n : n + 0 = n."
etc...
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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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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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This is first of a series of patches, converting `constrexpr` pattern
data type from ad-hoc location handling to `Loc.located`.
Along Coq, we can find two different coding styles for handling
objects with location information: one style uses `'a Loc.located`,
whereas other data structures directly embed `Loc.t` in their
constructors.
Handling all located objects uniformly would be very convenient, and
would allow optimizing certain cases, in particular making located
smarter when there is no location information, as it is the case for
all terms coming from the kernel.
`git grep 'Loc.t \*'` gives an overview of the remaining work to do.
We've also added an experimental API for `located` to the `Loc`
module, `Loc.tag` should be used to add locations objects, making it
explicit in the code when a "located" object is created.
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There were actually no syntax for it, and I'm still unsure what good
syntax to give to it, even more that it would be useful to have one.
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This is the good parts of PR #360.
IIUC, these vernacular were meant mostly for debugging and they are
not supposed to be of any use these days.
Back and join are still there not to break the testing infrastructure,
but some day they should go away.
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Applications of it were not clear/unproven, it made printers more
complex (as they needed to be functors) and as it lacked examples it
confused some people.
The printers now tag unconditionally, it is up to the backends to
interpreted the tags.
Tagging (and indeed the notion of rich document) should be reworked in
a follow-up patch, so they are in sync, but this is a first step.
Tested, test-suite passes.
Notes:
- We remove the `Richprinter` module. It was only used in the
`annotate` IDE protocol call, its output was identical to the normal
printer (or even inconsistent if taggers were not kept manually in
sync).
- Note that Richpp didn't need a single change. In particular, its
main API entry point `Richpp.rich_pp` is not used by anyone.
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This reverts commit b00e039b957b8428c21faec5c76f3a3484cde2cf, reversing
changes made to ca9e00ff9b2a8ee17430398a5e0bef2345c39341.
It turns out that calling from fake_ide the STM commands that were removed
by this PR requires an extension of the XML protocol. So postponing the
integration.
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I think these commands never make a lot of sense on scripts other than
debugging and we have better methods now.
The last remaining command, used for the tty emulation has been renamed
to VtBack, but it should go away at some point too once the legacy
interfaces are removed.
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In addition to a priority, cleanup the interfaces for passing this
information as well. The pattern, if given, takes priority over the
inferred one.
We only allow Existing Instances gr ... gr | pri. for now, without
pattern, as before.
Make the API compatible to 8.5 as well.
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The main point of this change is to fix #3035: Avoiding trailing
arguments in the Arguments command, and related issues occurring in
HoTT for instance. When the "assert" flag is not specified, we now
accept prefixes of the list of arguments.
The semantics of _ w.r.t. to renaming has changed. Previously, it meant
"restore the original name inferred from the type". Now it means "don't
change the current name".
The syntax of arguments is now restricted. Modifiers like /, ! and
scopes are allowed only in the first arguments list.
We also add *a lot* of missing checks on input values and fix various
bugs.
Note that this code is still way too complex for what it does, due to
the complexity of the implicit arguments, reduction behaviors and renaming
APIs.
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(It should apply also interactively.)
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For now, the only meaningful user is "Set Warnings". Example:
Section Bar.
Local Set Warnings Append "-foo".
(* warning foo is now disabled *)
End Bar.
(* foo is now reenabled, assuming it was before entering the section *)
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Was PR#299: Fix bug #4869, allow Prop, Set, and level names in
constraints.
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This is a quick fix. The Metasyntax module should be thoroughly revised
in trunk, because it starts featuring a lot of spaghetti code and redundant
data.
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It seems warnings are not taken into account in output/
tests.
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I hadn't realized that this PR uses OCaml's 4.03 inlined records
feature. I will advocate again for a switch to the latest OCaml stable
version, but meanwhile, let's revert. Sorry for the noise.
This reverts commit 3c47248abc27aa9c64120db30dcb0d7bf945bc70, reversing
changes made to ceb68d1d643ac65f500e0201f61e73cf22e6e2fb.
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We get rid of tuples containing booleans (typically for universe
polymorphism) by replacing them with records.
The previously common idom:
if pi2 kind (* polymorphic *) then ... else ...
becomes:
if kind.polymorphic then ... else ...
To make the construction and destruction of these records lightweight,
the labels of boolean arguments for universe polymorphism are now
usually also called "polymorphic".
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module)
For the moment, there is an Error module in compilers-lib/ocamlbytecomp.cm(x)a
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Suggested by R. Krebbers and C. Cohen, this makes modes
more applicable, by allowing to trigger resolution on partially
instantiated indices. This is a rough but fast approximation of the
pattern on which one would like instances to apply.
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No other changes (long only because of a change of indentation).
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Fixing : in Declare Module.
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Emilio Jesus Gallego Arias
Maxime Dénès
Gaetan Gilbert
Matej Kosik
Hugo Herbelin
Pierre-Marie Pédrot
Matthieu Sozeau
Guillaume Melquiond
Enrico Tassi
Pierre Letouzey