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149 commits

Author SHA1 Message Date
Leonardo de Moura
173b956961
feat: reserved names (#3675) 
- Add support for reserved declaration names. We use them for theorems
generated on demand.
- Equation theorems are not private declarations anymore.
- Generate equation theorems on demand when resolving symbols.
- Prevent users from creating declarations using reserved names. Users
can bypass it using meta-programming.

See next test for examples.
 2024-03-15 00:33:22 +00:00
Leonardo de Moura
84b0919a11 feat: type of theorems must be propositions 2024-03-13 12:37:58 -07:00
Leonardo de Moura
600412838c
fix: auxiliary definition nested in theorem should be def if its type is not a proposition (#3662) 2024-03-13 09:38:37 +00:00
Mac Malone
b2ae4bd5c1
feat: allow noncomputable unsafe definitions (#3647) 
Enables the combination of `noncomputable unsafe` to be used for
definitions. Outside of pure theory, `noncomputable` is also useful to
prevent Lean from compiling a definition which will be implemented with
external code later. Such definitions may also wish to be marked
`unsafe` if they perform morally impure or memory-unsafe functions.
 2024-03-12 02:46:42 +00:00
Leonardo de Moura
9e27e92eea
chore: set literal notation (#3348) 
Co-authored-by: Sebastian Ullrich <sebasti@nullri.ch>
 2024-02-19 23:22:36 +00:00
Henrik Böving
23e49eb519 perf: add prelude to all Lean modules 2024-02-18 14:55:17 -08:00
Leonardo de Moura
457d33d660 feat: configuration options zeta and zetaDelta 
TODO: bootstrapping issues, set `zetaDelta := false` in the simplifier.
 2024-02-18 14:14:55 -08:00
Joachim Breitner
f40c999f68
feat: improve termination_by error messages (#3255) 
as suggested in

<https://leanprover.zulipchat.com/#narrow/stream/270676-lean4/topic/termination_by.20regression/near/419786430>

Also refactored the code a bit and removed the code smell around
`GuessLex`-produced termination arguments (which may not be
surface-syntactically expressible) a bit by introducing an explicit flag
for those.
 2024-02-05 13:13:53 +00:00
Joachim Breitner
b5122b6a7b feat: per-function termination hints 
This change

 * moves `termination_by` and `decreasing_by` next to the function they
   apply to
 * simplify the syntax of `termination_by`
 * apply the `decreasing_by` goal to all goals at once, for better
   interactive use.

See the section in `RELEASES.md` for more details and migration advise.

This is a hard breaking change, requiring developers to touch every
`termination_by` in their code base. We decided to still do it as a
hard-breaking change, because supporting both old and new syntax at the
same time would be non-trivial, and not save that much. Moreover, this
requires changes to some metaprograms that developers might have
written, and supporting both syntaxes at the same time would make
_their_ migration harder.
 2024-01-10 17:27:35 +01:00
int-y1
8d7520b36f chore: fix typos in comments 2023-10-08 10:46:05 +02:00
Mario Carneiro
43f6d0a761 feat: implement have this (part 1) 2023-06-02 16:19:02 +02:00
Mario Carneiro
40e212c166 feat: infer def/theorem DefKind for let rec 2022-11-29 08:16:47 -08:00
Sebastian Ullrich
39f2322f35 fix: save correct environment in info tree for example 2022-11-24 13:11:14 -08:00
Gabriel Ebner
ba57ad3480 feat: add implementation-detail hypotheses 2022-10-11 17:24:35 -07:00
Gabriel Ebner
45c4f2faa0 refactor: remove _aux_discr 2022-10-11 17:24:35 -07:00
Mario Carneiro
c0812d0673 chore: reorder Elab.MutualDef and Elab.Deriving.Basic 2022-09-15 14:02:38 -07:00
Mario Carneiro
6392c5b456 chore: import reductions 2022-09-15 14:02:38 -07:00
Sebastian Ullrich
2e98726973 fix: levelMVarToParam must update levelNames 2022-08-31 17:57:07 -07:00
Sebastian Ullrich
e075b54f22 fix: collision between implicit and auto-bound level names 2022-08-31 17:57:07 -07:00
Sebastian Ullrich
e81ba951c6 fix: Core.transform API and uses 2022-08-25 19:07:42 -07:00
Gabriel Ebner
82e9f09bca fix: remove incorrect syntax coercion 2022-08-25 17:54:26 +02:00
Leonardo de Moura
413db56b89 refactor: simplify runTermElabM and liftTermElabM 2022-08-07 07:35:02 -07:00
Leonardo de Moura
cbd022e4eb refactor: replaceFVarIdAtLocalDecl => LocalDecl.replaceFVarId 2022-08-03 10:32:45 -07:00
Leonardo de Moura
3dfa895bf0 feat: OfNat instance postprocessor 
Closes #1389
 2022-07-30 08:35:45 -07:00
Leonardo de Moura
10c49d0007 fix: preserve user-facing names and BinderInfo when lifting let-rec declarations 
closes #1377
 2022-07-28 06:36:45 -07:00
Leonardo de Moura
90fb110cc9 refactor: improve FVarId method discoverability 
See issue #1346
 2022-07-25 22:18:58 -07:00
Leonardo de Moura
c418e8d2c5 fix: use useExplicit := false when processing instance ... where ... notation fields 
See new test.
 2022-07-25 16:53:13 -07:00
Leonardo de Moura
387b6c22ee chore: document and cleanup 2022-07-25 16:53:13 -07:00
Leonardo de Moura
8335a82aed refactor: improve MVarId method discoverability 
See issue #1346
 2022-07-24 21:36:33 -07:00
Mario Carneiro
f6211b1a74
chore: convert doc/mod comments from /- to /--//-! (#1354) 2022-07-22 12:05:31 -07:00
Leonardo de Moura
b6860968ff fix: catch exception at elabMutualDef 
closes #1301
 2022-07-12 18:39:30 -07:00
Gabriel Ebner
a8cab84735 refactor: use computed fields for Expr 2022-07-11 14:19:41 -07:00
Gabriel Ebner
3176943750 refactor: use computed fields for Level 2022-07-11 14:19:41 -07:00
Sebastian Ullrich
d7bcc271be refactor: avoid nested sequence in simpleBinder 2022-07-08 19:06:10 +02:00
Leonardo de Moura
fce7697151 fix: def _root_ and dotted notation in recursive definitions 
closes #1289
 2022-07-07 07:57:51 -07:00
Leonardo de Moura
55ad7beb8d feat: add coercion placeholder for applications that return an output parameter of a local instance 2022-07-06 15:42:39 -07:00
Leonardo de Moura
a1413b8fa1 feat: cache failures at isDefEq 
We can compile Lean with these changes, but 3 tests are still broken.
This cache is used to address a performance issue reported at
  https://leanprover.zulipchat.com/#narrow/stream/270676-lean4/topic/deterministic.20timeout.20with.20structures/near/288180087
 2022-07-03 21:52:01 -07:00
Leonardo de Moura
2ebcf29cde chore: use a[i]! for array accesses that may panic 2022-07-02 15:12:05 -07:00
Sebastian Ullrich
498c7a6a97 refactor: remove some unnecessary antiquotation kind annotations 
These are just the ones I stumbled upon, there should be a lot more now
rendered obsolete by the coercions.
 2022-06-27 22:37:02 +02:00
Leonardo de Moura
2a940dd4ae feat: add Expr.collectFVars, LocalDecl.collectFVars, Pattern.collectFVars, and AltLHS.collectFVars 
They are all in `MetaM`.

These are helper functions for issue #1237. We need to "cleanup" the
local context before trying to compile the match-expression.

see issue #1237
 2022-06-22 15:53:43 -07:00
Sebastian Ullrich
ce054fb2e7 fix: introduce semicolonOrLinebreak, replace many(1) with sepBy(1) where appropriate 2022-06-16 23:33:57 +02:00
Leonardo de Moura
22c8f10b12 chore: remove constant command 2022-06-14 17:14:28 -07:00
Leonardo de Moura
fa64c072ab feat: where declarations at instances 
https://leanprover.zulipchat.com/#narrow/stream/270676-lean4/topic/Local.20functions.20in.20instances/near/285333999
 2022-06-07 18:48:15 -07:00
Leonardo de Moura
041827bed5 chore: unused variables 2022-06-07 17:54:10 -07:00
Leonardo de Moura
8649483b41 feat: produces an error if the declaration body contains a universe parameter that does not occur in the declaration type nor is explicitly provided 
closes #898
 2022-06-02 19:43:09 -07:00
Leonardo de Moura
0b92195ec8 feat: refine auto bound implicit feature 2022-04-21 10:17:15 -07:00
Leonardo de Moura
ea682830d1 refactor: change addTermInfo type 2022-04-08 15:01:57 -07:00
Leonardo de Moura
de2e2447d2 chore: style 2022-04-07 17:35:05 -07:00
Leonardo de Moura
dcb88d969a feat: improve auto implicit binder names in definitions/theorems 2022-04-07 14:46:59 -07:00
Leonardo de Moura
1107705525 fix: jump to definition inside recursive definitions was not working on VS Code 
Remark: it was working on Emacs.
 2022-04-06 14:27:49 -07:00