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406 commits

Author SHA1 Message Date
Leonardo de Moura
fb64a4ccc0 fix: unfold should not create an auxiliary declaration when result is definitionally equal 
This commit fixes an issue reported on Zulip
https://leanprover.zulipchat.com/#narrow/stream/270676-lean4/topic/Unfolding.20the.20type.20of.20a.20variable.20creates.20a.20new.20variable
 2022-04-11 07:54:15 -07:00
Leonardo de Moura
4374ec4ad8 perf: use Kernel isDefEq for ground terms 
`state8.lean` now takes 0.29s. It was 0.37s.
 2022-04-09 12:24:20 -07:00
Leonardo de Moura
4dd2b26e06 fix: rfl error message and corner case 
The new `rfl` slightly improves the performance for `rfl` proofs of
ground terms.
Example: `state8.lean` now takes 0.37s. It was 0.52s.
 2022-04-09 12:08:04 -07:00
Leonardo de Moura
03f6b87647 feat: add hand-written rfl tactic 
It requires update stage0
 2022-04-09 11:57:27 -07:00
Leonardo de Moura
099fba43d3 chore: remove trace[Meta.debug] leftovers 2022-04-08 06:49:09 -07:00
Leonardo de Moura
de2e2447d2 chore: style 2022-04-07 17:35:05 -07:00
Leonardo de Moura
cd0d7e676f chore: rename renameMVar => setMVarUserName 2022-04-07 13:50:58 -07:00
Leonardo de Moura
c26e968c24 chore: style 2022-04-07 11:25:45 -07:00
Leonardo de Moura
4a0f68de83 fix: split tactic issue 2022-04-01 15:47:24 -07:00
Leonardo de Moura
ea8f31144e feat: add predicate to generalize tactic to select subterms to be generalized 2022-04-01 15:47:24 -07:00
Leonardo de Moura
d21e62ecb7 refactor: custom simpMatch for WF module 
It is just the skeleton right now.
 2022-03-31 14:51:07 -07:00
Leonardo de Moura
a06cd40e29 feat: improve match expression support at simp 2022-03-28 17:17:01 -07:00
Leonardo de Moura
3c964f3b9f feat: substitute auxiliary equations introduced by the split tactic 2022-03-28 14:29:28 -07:00
Leonardo de Moura
2dea5471da feat: add support for HEq to the subst tactic 2022-03-28 12:23:55 -07:00
Leonardo de Moura
4801b37cfb fix: exfalso 2022-03-27 14:56:24 -07:00
Leonardo de Moura
2f67140603 fix: incorrect uses of getMVarType' 2022-03-22 14:11:29 -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
E.W.Ayers
da68f629f9 style: Apply.lean 
Apply Leo's review requests.
 2022-03-19 15:51:40 -07:00
E.W.Ayers
d954706fcf feat: ApplyNewGoals config for apply 
Lean.Meta.Tactic.apply now accepts an ApplyConfig argument.
`apply` now changes which metavariables are stored with choice
of the newGoals config.
This allows one to implement `fapply` and `eapply`.
An example of this is given in tests/lean/run/apply_tac.lean.

Closes #1045
 2022-03-19 15:51:40 -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
Daniel Fabian
969eea19f0 refactor: do not use mkAppM so much 2022-03-16 17:21:20 -07:00
Daniel Fabian
cf4e873974 feat: support Sort u in ac_refl. 2022-03-16 17:21:20 -07:00
Daniel Fabian
8e0763f502 fix: binder case. 2022-03-16 17:21:20 -07:00
Daniel Fabian
d667d5ab5d feat: rewrite the tactic using simp as the basis. 2022-03-16 17:21:20 -07:00
Daniel Fabian
ed63274874 refactor: move ac_refl syntaxt to Init/Notation 2022-03-16 17:21:20 -07:00
Daniel Fabian
73a59e5bc4 feat: use simp instead of rewrite inside of ac_refl 2022-03-16 17:21:20 -07:00
Daniel Fabian
84f72b9389 test: add further ac_refl tests. 2022-03-16 17:21:20 -07:00
Daniel Fabian
a60220b036 feat: add tactic for ac_refl. 2022-03-16 17:21:20 -07:00
Daniel Fabian
eaa48f0d8d refactor: move ac proofs to Init. 2022-03-16 17:21:20 -07:00
Daniel Fabian
1114dfac6c feat: add theory for ac normalization. 
This lets us implement an AC reflexivity tactic.
 2022-03-16 17:21:20 -07:00
Leonardo de Moura
50813429b8 fix: add expected type hint 
Other tactics (e.g., `simp_all`) may try to infer the type of the
proof, and `Nat.Linear.eq_of_toNormPoly_eq` has a messy resulting type.
 2022-03-16 17:07:22 -07:00
Leonardo de Moura
cb925a3a3c fix: return some at simpCnstrPos? if arith expr was normalized, but not simplified 
Example: converted `<`, `>`, or `>=` into `<=`.
 2022-03-16 16:36:39 -07:00
Leonardo de Moura
09648521d1 chore: add Repr instances 2022-03-16 16:07:14 -07:00
Leonardo de Moura
0bd9de1cb9 perf: add InstantiateLevelCaches for types and values at CoreM 2022-03-15 17:42:38 -07:00
Leonardo de Moura
d6de53a7aa perf: custom splitAnd 2022-03-15 16:59:11 -07:00
Leonardo de Moura
7ee7ca30b8 fix: index out of bounds 2022-03-15 05:16:19 -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
4660485ac8 refactor: collectDeps => collectForwardDeps 2022-03-09 11:27:58 -08:00
Sebastian Ullrich
ff097e952f chore: link orphan file 2022-03-07 10:59:49 +01:00
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
137c70f055 chore: add LinearArith/Nat/Solver.lean 2022-03-03 11:13:40 -08:00
Leonardo de Moura
88a2645a5f refactor: add Lean/Meta/Tactic/LinearArith/Basic.lean 2022-03-02 11:52:00 -08:00
Leonardo de Moura
f171286e74 refactor: add src/Lean/Meta/Tactic/LinearArith/Nat 2022-03-02 11:52:00 -08:00
Leonardo de Moura
4e310ac63d feat: improve SimpTheorem preprocessor 2022-02-28 18:27:36 -08:00
Leonardo de Moura
55bc048656 feat: make sure inequalities are normalized when no monomial was cancelled 2022-02-28 15:10:39 -08:00
Leonardo de Moura
e455df9c95 fix: use a def-eq aware mapping at toLinearExpr 
The new test exposes the problem fixed by this commit.
In the termination proof we have two `sizeOf xs` terms that are not
syntactically identical (only definitional equal) because the
instances are different.
 2022-02-28 13:46:36 -08:00
Leonardo de Moura
c5fdd54cd8 feat: support for acyclicity at unifyEqs 
closes #1022
 2022-02-27 10:03:40 -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