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166 commits

Author SHA1 Message Date
Leonardo de Moura
71f91cca23 chore: make sure isClass? return none when argument contains type errors 
This is particularly useful for the delaborator when trying to pretty
print code that contains type errors.
 2020-09-17 08:24:06 -07:00
Sebastian Ullrich
607227dc7f feat: delaborator: tolerate ill-typed terms (such as IR) 2020-09-17 08:12:28 -07:00
Leonardo de Moura
b37158f4f8 fix: apply 2020-09-16 16:18:30 -07:00
Leonardo de Moura
f2835207a8 refactor: move isDefEqGuarded helper 2020-09-16 10:15:47 -07:00
Leonardo de Moura
544d2f4ce5 fix: kind for type metavariable 
For example, `mkFreshExprMVar none MetavarKind.synthetic` should
create a fresh synthetic metavariable `?m` with type `?t` where `?t`
is a fresh natural metavariable. If users want a synthetic
metavariable `?t`, then it must create it themselves.
 2020-09-16 08:24:15 -07:00
Leonardo de Moura
0abca5475f refactor: move ppExpr to IO 
@Kha I am also tracking `currNamespace` and `openDecls`.

BTW, I also tried an experiment where I added `currNamespace` and
`openDecls` to `Meta.Context`, but it looked weird. This information
is only needed in the elaborator and pretty printer.
The `PPContext` object should contain everything you need. You
can put `currNamespace` and `openDecls` in the `Delaborator.Context`.
 2020-09-15 18:48:21 -07:00
Leonardo de Moura
c4c1a3fc8d chore: make it clear the free variable dependency 2020-09-15 16:39:17 -07:00
Leonardo de Moura
9af6264aad fix: do not fail if target is not found 2020-09-15 15:06:35 -07:00
Leonardo de Moura
232378070f feat: parentTag propagation for apply 2020-09-15 10:46:40 -07:00
Leonardo de Moura
52d6fbb906 fix: appendTagSuffix operation 2020-09-15 10:46:40 -07:00
Leonardo de Moura
c3623e9a0a chore: reduce default max steps 2020-09-13 16:18:53 -07:00
Leonardo de Moura
5da7f0b50b fix: set constApprox := false at SynthInstance 
We don't want contraints such as
```
?m a =?= Nat
```
to be solved as
```
?m := fun a => Nat
```
durint type class resolution.
 2020-09-13 16:11:27 -07:00
Leonardo de Moura
2de7f1f4d9 doc: possible improvement 2020-09-13 13:16:03 -07:00
Leonardo de Moura
fd7dca9bc1 fix: do not cache if term contains Expr-metavariables 2020-09-13 13:13:05 -07:00
Leonardo de Moura
897289599a fix: ignore auxiliary declarations at subst and assumption 2020-09-13 09:59:37 -07:00
Leonardo de Moura
e181c1adee refactor: add DefEqM 
The idea is to make clear that the field `posponed` is transient
state. It is only used during `isDefEq`.
The refactoring was motivated by a bug I found where the `posponed`
constraints were not being handled correctly. For example,
the `check (e : Expr)` method was returning `true`, but leaving pending
universe constraints at `postponed`.

cc @Kha
 2020-09-12 16:42:16 -07:00
Leonardo de Moura
0967ad7e91 feat: extend/cleanup isLevelDefEqAux 
`tests/lean/run/toExpr.lean` could not be processed by the new
frontend without these extensions.
 2020-09-12 15:38:48 -07:00
Leonardo de Moura
a5c99b7601 fix: bug at getInstances 2020-09-10 17:49:17 -07:00
Leonardo de Moura
f28def6c5e feat: add Meta.ppExpr 2020-09-10 17:27:14 -07:00
Leonardo de Moura
b136c519e2 fix: scope and improve error message 2020-09-09 16:44:43 -07:00
Leonardo de Moura
02fc447b04 fix: error message 2020-09-09 16:42:41 -07:00
Leonardo de Moura
20bc004c70 feat: improve subst tactic 2020-09-09 16:20:15 -07:00
Leonardo de Moura
854cc3418e feat: improve error message for dependent-match elimination failures 
@Kha This is a first attempt to improve the error message for examples
like the one Andrew Kent posted on Zulip.
I created a simpler example using "vectors".
 2020-09-09 13:43:06 -07:00
Leonardo de Moura
96ffd206ca feat: add findRecArg 2020-09-08 17:25:35 -07:00
Leonardo de Moura
9151fef49d feat: abstract proofs occurring in binders 2020-09-08 12:29:35 -07:00
Leonardo de Moura
296981319c feat: add abstractNestedProofs 2020-09-08 11:48:28 -07:00
Leonardo de Moura
aed9b16dc8 feat: add MatcherInfo extension 2020-09-07 15:08:21 -07:00
Leonardo de Moura
fded18d114 chore: mkElim ==> mkMatcher 2020-09-07 14:33:39 -07:00
Leonardo de Moura
a12bc273bb refactor: src/Lean/Meta/EqnCompiler ==> src/Lean/Meta/Match 2020-09-07 11:09:48 -07:00
Leonardo de Moura
87db970cfa chore: control code size explosion 2020-09-07 08:42:39 -07:00
Leonardo de Moura
936b8d34dd chore: add auxiliary declaration to stop specialization 2020-09-07 08:30:08 -07:00
Leonardo de Moura
ddf12c91c2 fix: do not consider auxiliary declarations as local instances 2020-09-07 08:08:35 -07:00
Leonardo de Moura
36bc65385d chore: naming convention 2020-09-07 08:03:41 -07:00
Leonardo de Moura
79130bc3f9 feat: add addAndCompilePartial 2020-09-07 07:56:11 -07:00
Leonardo de Moura
f30b5bdcba chore: control code size explosion 2020-09-07 07:23:44 -07:00
Leonardo de Moura
102d2ae57d fix: avoid unnecessary reduction 
```lean
forallBoundedTelescope `(Nat -> IO Nat) 1 fun xs type => ...
```
should assign `IO Nat` to `type` instead of `IO.RealWorld -> ...`
 2020-09-06 06:57:52 -07:00
Leonardo de Moura
12f69a78b7 chore: change meaning of lambdaTelescope 
`lambdaTelescope` now only consumes `lambda`s.
`lambdaLetTelescope` implements the old behavior.
 2020-09-04 13:35:17 -07:00
Leonardo de Moura
a04fc631e0 doc: Closure.lean 
@Kha I documented the new `Closure.lean` module, and tried to capture
the issues we discussed this morning.
Tomorrow, I will implement a similar procedure for "closing" all the
let-recs in a `mutual` block.
 2020-09-03 18:06:30 -07:00
Leonardo de Moura
555a3f0dcf feat: new and improved mkAuxDefinition 2020-09-03 17:37:06 -07:00
Leonardo de Moura
f34fd3e6b4 refactor: move Closure.lean to Meta 
We will need to improve the support for let-decls. We will use
the new `trackZeta`.
 2020-09-03 11:54:08 -07:00
Leonardo de Moura
ad774ae397 feat: support for tracking which let-decls have been zeta expanded 2020-09-03 11:32:46 -07:00
Leonardo de Moura
5cc0dd75ec refactor: remove unnecessary abstraction 2020-09-03 10:16:56 -07:00
Leonardo de Moura
238c38fed9 feat: preserve nonDep flag at LocalDecl.ldecl 2020-09-03 09:08:59 -07:00
Leonardo de Moura
f2a6562eed feat: validate 'let rec' types 2020-09-02 17:02:40 -07:00
Leonardo de Moura
25384142c2 feat: add addPartialDecls 
Helper method for implementing the idiom: unsafe decls + constant with `[implementedBy]`
 2020-08-31 14:23:54 -07:00
Leonardo de Moura
7bd1cf718e feat: improve error location for unassigned holes in the exact tactic 2020-08-30 15:37:11 -07:00
Leonardo de Moura
3d3238c7fe fix: typo at introNCoreAux 2020-08-29 17:00:59 -07:00
Leonardo de Moura
52c86e918d fix: match 2020-08-29 16:38:50 -07:00
Leonardo de Moura
0288ed0129 feat: add change and changeHypothesis 2020-08-29 08:10:55 -07:00
Leonardo de Moura
e5c35d3a4e feat: add AddMessageDataContext 2020-08-28 18:05:42 -07:00