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This allows to focus on a sub-goal other than the first one without
resorting to the `Focus` command.
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Unfortunately OCaml doesn't deprecate the constructors of a type when
the type alias is deprecated.
In this case it means that we don't get rid of the kernel dependency
unless we deprecate the constructors too.
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One less global flag.
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Virtually all classifications of vernacular commands (the STM
classifier, "filtered commands", "navigation commands", etc.) were
broken in presence of control vernaculars like Time, Timeout, Fail.
Funny examples of bugs include Time Abort All in coqtop or Time Set Ltac
Debug in CoqIDE.
This change introduces a type separation between vernacular controls and
vernacular commands, together with an "under_control" combinator.
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same right-hand side.
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This is to have a better symmetry between CCases and GCases.
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Adding a space before the bar separating disjunctive patterns.
Removing an extra space after the bar for inner disjunctive patterns.
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The exception needs to carry aroud a pair of `env, sigma` so printing
is correct. This gets rid of a few global calls, and it is IMO the
right thing to do.
While we are at it, we incorporate some fixes to a couple of
additional printing functions missing the `env, sigma` pair.
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They are now bound at the library + module level and can be qualified
and shadowed according to the usual rules of qualified names.
Parsing and printing of universes "u+n" done as well.
In sections, global universes are discharged as well, checking that
they can be defined globally when they are introduced
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functionalization.
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We remove deprecated syntax "Coercion Local" and such, and seize the
opportunity to refactor some code around vernac_expr.
We also do a small fix on the STM classification, which didn't know about
Let Fixpoint and Let CoFixpoint.
This is a preliminary step for the work on attributes.
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This is a minor cleanup adding a record in a try to structure the
state living in `Lib`.
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In particular `Proof_global.t` will become a first class object for
the upper parts of the system in a next commit.
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There don't really bring anything, we also correct some minor nits
with the printing function.
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Also use constant_universes_entry instead of a bool flag to indicate
polymorphism in ParameterEntry.
There are a few places where we convert back to ContextSet because
check_univ_decl returns a UContext, this could be improved.
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We generalize the possible use of levels to raw and glob printers.
This is potentially useful for printing ltac expressions which are the
glob level.
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We mirror the structure of EConstr and move the destructors from `Term`
to `Constr`.
This is a step towards having a single module for `Constr`.
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We deprecate a few functions that were deprecated in the comments plus
we place `Nameops` and `Univops` in engine where they do seem to
belong in the large picture of code organization.
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We'd like to handle proofs functionally we thus recommend not to use
printing functions without an explicit context.
We also adapt most of the code, making more explicit where the
printing environment is coming from.
An open task is to refactor some code so we gradually make the
`Pfedit.get_current_context ()` disappear.
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Addded by c6d9d4fb142ef42634be25b60c0995b541e86629 ["Adding ability to
put any pattern in binders, prefixed by a quote."] its current
placement as well as the hook don't make a lot of sense.
In particular, they prevent parts of Coq working without linking the
parser.
To this purpose, we need to consolidate the `Constrexpr`
utilities. While we are at it we do so and remove the `Topconstr`
module which is fully redundant with `Constrexpr_ops`.
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I followed what seems to be the intention of the code, with the
original intention of remove the global imperative proof state.
However, I fully fail to see why the new API is better than the old
one. In fact the opposite seems the contrary.
Still big parts of the "new proof engine" seem unfinished, and I'm
afraid I am not the right person to know what direction things should
take.
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We do up to `Term` which is the main bulk of the changes.
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This will allow to merge back `Names` with `API.Names`
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Syntax removed in faa064c746e20a12b3c8f792f69537b18e387be6
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The model provides three kinds of printers depending on whether the
printer needs a context, and, if yes if it supports levels. In the
latter case, it takes defaults levels for printing when in a
surrounded context (lconstr style) and for printing when not in a
surrounded context (constr style).
This model preserves the 8.7 focussing semantics of "idtac"
(i.e. focussing only when an env is needed) but it also shows that the
semantics of "idtac", which focusses the goal depending on the type of
its arguments, is a bit ad hoc to understand.
See discussion at PR#6047
"https://github.com/coq/coq/pull/6047#discussion_r148278454".
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This is for eventually being reused in Ltac messages ("idtac").
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To this extent we factor out the relevant bits to a new file,
ltac_pretype.
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We place `Proof_using` in the proper place [`vernac`] and we remove
gross parsing hacks.
The new placement should allow to use the printers and more convenient
structure, and reduce strange coupling between parsing and internal
representation.
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For now, a few vernacular features were lot in the process, like locating
Ltac definitions. This will be fixed in an upcoming commit.
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Maxime Dénès
Vincent Laporte
Théo Zimmermann
Emilio Jesus Gallego Arias
Hugo Herbelin
Matthieu Sozeau
Gaëtan Gilbert
Pierre-Marie Pédrot