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144 commits

Author SHA1 Message Date
Leonardo de Moura
a06cd40e29 feat: improve match expression support at simp 2022-03-28 17:17:01 -07:00
Leonardo de Moura
321d6b0e67 feat: support for user-defined simp attributes in the simp tactic. 
See `RELEASES.md`

TODO: make sure `-thm` also removes `thm` from user-defined simp attributes.
 2022-03-20 18:45:57 -07:00
Leonardo de Moura
38a1675c72 fix: dicrimination tree getMatchWithExtra 
It was buggy when the input argument could be reduced `e`.

fixes #1048
 2022-03-17 16:44:38 -07:00
Leonardo de Moura
86fc089e07 fix: tryAutoCongrTheorem? may still use dsimp for fixed arguments 
Reviewed-by: Leonardo de Moura <leonardo@microsoft.com>
 2022-03-14 14:04:28 -07:00
Leonardo de Moura
272dd5533f chore: style use · instead of . for lambda dot notation 
We are considering removing `.` as an alternative for `·` in the
lambda dot notation (e.g., `(·+·)`).
Reasons:
- `.` is not a perfect replacement for `·` (e.g., `(·.insert ·)`)
- `.` is too overloaded: `(f.x)` and `(f .x)` and `(f . x)`. We want to keep the first two.
 2022-03-11 07:49:03 -08:00
Leonardo de Moura
f306c9b69b fix: split tactic 
`unreachable!` assertions at `simpIfLocalDecl` and
`simpTargetLocalDecl` were reachable.
 2022-03-03 18:13:34 -08:00
Leonardo de Moura
4e310ac63d feat: improve SimpTheorem preprocessor 2022-02-28 18:27:36 -08:00
Leonardo de Moura
89f88b1caa feat: simplify nested arith expressions 2022-02-27 09:01:52 -08:00
Leonardo de Moura
ff76958959 feat: basic support for linear Nat arithmetic at simp 2022-02-26 08:58:32 -08:00
Leonardo de Moura
0681d818ec chore: add helper function for simp 2022-02-25 16:42:41 -08:00
Leonardo de Moura
43c2169f78 fix: when performing contextual simplification, and arrow may become a dependent arrow 
fixes #1024
 2022-02-23 18:43:32 -08:00
Leonardo de Moura
07d1ec1926 fix: simp_all was "self-simplifying" simplified hypotheses 
fixes #1027
 2022-02-23 16:48:28 -08:00
Leonardo de Moura
33b1d2fd98 fix: preserve arrow binder names and info at simp 
We use the idiom `revert; simp; ...; intro` in a few places. Some of
the reverted hypotheses manifest themselves as arrows in the target.
Before this commit, `simp` would lose the binder names and info when
simplifying an arrow, and we would get inaccessible names when
reintroducing them.
 2022-02-20 16:27:40 -08:00
Leonardo de Moura
c1777c17e3 feat: add simpTargetStar 2022-02-08 11:43:45 -08:00
Leonardo de Moura
824d0aa8a5 chore: remove leftover 2022-02-08 11:43:45 -08:00
Leonardo de Moura
a9bb646d4f chore: cleanup 2022-02-07 17:35:07 -08:00
Leonardo de Moura
8d7f0ea2f2 feat: add removeUnnecessaryCasts 
see #988
 2022-02-07 17:24:32 -08:00
Leonardo de Moura
9d34d9bc5a feat: cache and optimize mkCongrSimp? at simp 
see #988
 2022-02-07 17:01:21 -08:00
Leonardo de Moura
007f0e1d71 feat: use mkCongrSimp? at simp 
TODO: cache auto generated congr theorems, and `removeUnnecessaryCasts`

see #988
 2022-02-07 16:45:01 -08:00
Leonardo de Moura
93bd4a7f88 chore: lemma => thm 2022-02-07 13:55:23 -08:00
Leonardo de Moura
9c2942c36d chore: "simp lemma" => "simp theorem" 2022-02-06 09:15:39 -08:00
Leonardo de Moura
d6dc077c86 refactor: CongrLemma => SimpCongrTheorem 2022-02-06 09:15:39 -08:00
Leonardo de Moura
96bae46045 refactor: SimpLemma => SimpTheorem 2022-02-06 09:15:39 -08:00
Leonardo de Moura
12e2a79170 chore: fix codebase after removing auto pure 2022-02-03 18:08:14 -08:00
Leonardo de Moura
c30380e2fa feat: lift the restriction in congr theorems that all function arguments on the lhs must be free variables 
see #988
 2022-02-02 18:23:18 -08:00
Leonardo de Moura
101fc12b54 feat: partially applied user congruence lemmas 
see #988
 2022-02-02 17:41:21 -08:00
Leonardo de Moura
cb4a86ac68 fix: do not validate local eq theorems 
see #973
 2022-01-27 11:50:20 -08:00
Leonardo de Moura
a63163e992 feat: do not try to discharge hypotheses at simp when type contains assignable metavariables 
closes #973
see https://github.com/leanprover-community/mathport/issues/70
 2022-01-26 17:57:52 -08:00
Leonardo de Moura
8db923e010 feat: generate error message for simp theorems that are equivalent to x = x 
see #973
see https://github.com/leanprover-community/mathport/issues/70
 2022-01-26 11:16:31 -08:00
Leonardo de Moura
a10e32f537 fix: check "heartbeats" at simp 2022-01-26 07:50:25 -08:00
Leonardo de Moura
15cca3000a fix: withIncRecDepth was not aborting simp 
It was just making it stop simplification at the current branch.

Now, elaboration is interrupted after a few seconds in the example at
issue #906.

see #906
 2022-01-26 07:48:58 -08:00
Leonardo de Moura
02677cf326 fix: igore instance implicit arguments in term ordering used at simp 
closes #972
 2022-01-24 18:57:31 -08:00
Leonardo de Moura
7ada79bf2e fix: use an AC-compatible ordering on Expr at simp 
closes #968
 2022-01-22 09:42:59 -08:00
Leonardo de Moura
ef449e816f chore: improve trace messages 2022-01-19 14:29:04 -08:00
Leonardo de Moura
7a86b613dc chore: remove old comment 2022-01-12 08:28:03 -08:00
Leonardo de Moura
c303bf6916 refactor: add helper methods for simp 2022-01-07 13:51:45 -08:00
Leonardo de Moura
bef161caf7 feat: add better support for discharging equation theorem hypotheses 2022-01-06 14:42:23 -08:00
Leonardo de Moura
90b179bea9 fix: add equation theorems even if definition supports smart unfolding 
See new test.
 2022-01-06 13:53:03 -08:00
Leonardo de Moura
60934bf1d5 feat: add support for removing [simp] attribute from definitions with equational theorems 2022-01-05 16:57:59 -08:00
Leonardo de Moura
c2e52bd577 feat: use getEqnsFor? when applying [simp] at definitions 2022-01-05 15:59:39 -08:00
Leonardo de Moura
030e932db8 feat: use getEqnsFor? at simp 2022-01-05 11:28:24 -08:00
Mario Carneiro
7956a9bb15
chore: typos 2021-12-23 10:14:39 +01:00
Leonardo de Moura
c954fc9ec7 fix: bug at simpLoop 2021-12-18 06:48:08 -08:00
Leonardo de Moura
81f7335269 fix: ensure motive is type correct at simpProj 2021-12-15 17:07:31 -08:00
Leonardo de Moura
0a81093db5 fix: bug at simpProj 
This bug was reported at https://github.com/dwrensha/lean4-maze/issues/1
 2021-12-15 17:07:00 -08:00
Leonardo de Moura
96e0e1db98 fix: nontermination at simp [OfNat.ofNat] 
closes #788
 2021-12-10 12:29:33 -08:00
Leonardo de Moura
7b6732a137 refactor: ExprDefEq.lean and LevelDefEq.lean are now implementation only files 
We use the export/extern idiom to define `isLevelDefEqAux`, and then
define the `isDefEq` user facing functions at `Meta/Basic.lean`.
 2021-12-06 09:57:00 -08:00
Leonardo de Moura
88b6ad4756 feat: add etaStruct to Meta.Simp.Config 2021-11-25 11:31:00 -08:00
Gabriel Ebner
f55649f81b fix: prefer simp lemmas with *higher* priority 2021-11-22 11:52:45 -08:00
Leonardo de Moura
2a7b33089a fix: transparency settings at simp TC check 
fixes #790
 2021-11-15 18:09:31 -08:00