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It stores both universe constraints and subtyping information for
blocks of inductive declarations.
At this stage the there is no inference or checking implemented. The
subtyping information simply encodes equality of levels for the condition of
subtyping.
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The [let _typ = ...] comes from before universe polymorphism. In those
times it was [let _typ, cst = ...] which produced something of use.
The asserts come from 359e4ffe3 and before (2006 and before). In those
times [Typeops.infer] rebuilt the term being typed, but nowadays the
assert seems of little use.
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This exports two functions:
- declare_reduction_effect: to declare a hook to be applied when some
constant are visited during the execution of some reduction functions
(primarily cbv, but also cbn, simpl, hnf, ...).
- set_reduction_effect: to declare a constant on which a given effect
hook should be called.
Developed jointly by Thomas Sibut-Pinote and Hugo Herbelin.
Added support for printing effect in functions of tacred.ml.
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As per https://github.com/coq/coq/pull/716#issuecomment-305140839
Partially using
```bash
git grep --name-only 'anomaly\s*\(~label:"[^"]*"\s*\)\?\(Pp.\)\?(\(\(Pp.\)\?str\)\?\s*".*[^\.!]")' | xargs sed s'/\(anomaly\s*\(~label:"[^"]*"\s*\)\?\(Pp.\)\?(\(\(Pp.\)\?str\)\?\s*".*\s*[^\.! ]\)\s*")/\1.")/g' -i
```
and
```bash
git grep --name-only ' !"' | xargs sed s'/ !"/!"/g' -i
```
The rest were manually edited by looking at the results of
```bash
git grep anomaly | grep '\.ml' | grep -v 'anomaly\s*\(~label:"[^"]*"\s*\)\?\(Pp\.\)\?(\(\(Pp.\)\?str\)\?\s*".*\(\.\|!\)")' | grep 'anomaly\($\|[^_]\)' | less
```
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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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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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Namely: Replacing (currently deactivated) warning on illegal ident by
an error in strict mode and nothing in soft mode.
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let-ins
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We export the relevant level equality function in UGraph which is way faster
than checking that each one is smaller than the other as universes.
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We remove `edit_id` from the STM. In PIDE they serve a different
purpose, however in Coq they were of limited utility and required many
special cases all around the code.
Indeed, parsing is not an asynchronous operation in Coq, thus having
feedback about parsing didn't make much sense. All clients indeed
ignore such feedback and handle parsing in a synchronous way.
XML protocol clients are unaffected, they rely on the instead on the
Fail value.
This commit supersedes PR#203.
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We don't have to perfom in-place updates because we actually know that there
is none on the stack. This should speed up UniMath.
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Also remove obvious comments.
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Also documenting how the implicit arguments by position are computed.
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Instead of calling the whole reduction machirery, we check before reducing that
a term is an applied atom, i.e. inductive, constructor, evar or meta. In that
case, the abstract machine acts as the identity but needs to destruct and
reconstruct the whole term, which can be very costly.
This fixes part of bug #5421: vm_compute is very slow at doing nothing, where
recomputation of the type of a big inductive was incredibly expensive.
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