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Author SHA1 Message Date
Leonardo de Moura
edd5e97045 feat(frontends/lean/elaborator): coercion from (decidable) Prop to bool 
This is a hard coded extra case. It is not an instance of has_coe.
Even if we change has_coe to accomodate this case, it will not be a
satisfactory solution because this coercion depends on the element and
not the type, and the element usually contains metavariables.

We should eventually write a tactic for synthesizing coercions.
 2017-02-14 18:41:32 -08:00
Leonardo de Moura
11d5773560 refactor(library/init/meta): remove whnf_core 2017-02-14 18:39:57 -08:00
Leonardo de Moura
06a7d6d311 refactor(library/init/meta): remove exact_core 2017-02-14 17:43:42 -08:00
Leonardo de Moura
1ab2bb7714 feat(frontends/lean/elaborator): eta-expand function applications until we consume all optional and auto parameters 2017-02-14 17:38:08 -08:00
Leonardo de Moura
1b412b6cc0 feat(library/init/meta): new cases that reverts also composite terms 
The previous `cases` tactic would only use the revert/intro idiom
for `cases h` when `h` is a hypothesis
 2017-02-14 13:30:36 -08:00
Leonardo de Moura
3ced85d399 feat(library/init/meta/tactic): add kdepends_on tactic 2017-02-14 10:33:28 -08:00
Leonardo de Moura
f650a1b873 refactor(library/init/meta): avoid '_core' idiom using default parameters 
I kept a few core methods (e.g., exact_core and apply_core). Reason:
if we use default parameters

    meta constant exact (e : expr) (md := semireducible) : tactic unit

then, we will not be able to write

    to_expr p >>= exact

The workaround is

    do t <- to_expr p, exact t

or
    to_expr p >>= (fun x, exact x)

One alternative is to change how we handle default parameters, and
eta-expand applications that involve default parameters.
We may also have an attribute [eta_expand]. Then

    attribute [eta_expand] foo

instructs the elaborator to automatically eta-expand foo-applications.
The attribute would give users more control, and avoid potential
performance problems. Without the attribute, then for every function
application the elaborator has to check the type and decide whether it
must be eta-expanded or not.

@gebner @kha What do you think?
 2017-02-14 09:46:55 -08:00
Leonardo de Moura
59c8a36f40 chore(library/init/meta/simp_tactic): remove unnecessary generality 2017-02-13 17:19:14 -08:00
Leonardo de Moura
c37634c815 feat(library/init): add helper functions and instances 2017-02-13 14:53:32 -08:00
Rob Lewis
46a46c9ee0 feat(norm_num): handle nat subtraction as a special case 2017-02-12 17:15:08 -08:00
Leonardo de Moura
80ac700e36 refactor(library/init): provide more general try_for, and implement tactic.try_for using it 2017-02-12 12:15:19 -08:00
Leonardo de Moura
7112f6d685 feat(library/tactic): add try_for tactic 2017-02-11 20:35:42 -08:00
Leonardo de Moura
73b1e927ff chore(tests/lean): fix tests 2017-02-11 18:37:15 -08:00
Leonardo de Moura
41d3d42dee feat(library/init/meta): add helper tactics 2017-02-11 18:30:38 -08:00
Leonardo de Moura
5ca18b8d2e feat(library/init/meta): add helper functions 2017-02-11 16:52:06 -08:00
Leonardo de Moura
2f5159e7eb feat(library/init/meta): add simple tactics for testing where a declaration was defined 2017-02-11 10:57:06 -08:00
Johannes Hölzl
9902a0d4d1 feat(src/library/tactic): apply_core returns list of all generated metavariables 2017-02-10 16:07:33 -08:00
Johannes Hölzl
bb136d63ab feat(src/library/tactic): tactic.cases_core returns for each new goal the used constructor, a list of introduced hypotheses, and substitutions for dependent hypotheses 2017-02-10 16:07:33 -08:00
Johannes Hölzl
d7af5515d2 feat(src/library/tactic): tactic.induction_core returns for each new goal the list of introduced hypotheses and substitutions for dependent hypotheses 
Also add to_obj(buffer<vm_obj>) to construct a vm-list of vm objects.
 2017-02-10 16:07:33 -08:00
Leonardo de Moura
c0e6314f14 fix(library/init/meta,library/tactic/elaborate): bad error position when to_expr is used outside of interactive mode 2017-02-09 18:44:50 -08:00
Leonardo de Moura
c8bbb34e2a feat(frontends/lean): add auto_param gadget 2017-02-09 15:49:10 -08:00
Leonardo de Moura
5e397795cf fix(library/init/meta): focus tactic 
This commit also add the interactive tactic 'focus'
 2017-02-09 10:02:19 -08:00
Leonardo de Moura
3d603ec28e feat(kernel,library,frontends/lean,api): remove global universe levels from kernel and APIs 2017-02-08 17:41:44 -08:00
Leonardo de Moura
32e6442d0a feat(frontends/lean): no global universes in the frontend 2017-02-08 17:23:04 -08:00
Leonardo de Moura
c5dc8e651a chore(library/init/meta): cleanup 2017-02-08 15:33:25 -08:00
Leonardo de Moura
7df64e6e7b feat(library/data): add lazy_list 2017-02-08 12:01:46 -08:00
Leonardo de Moura
54f7bf9391 fix(frontends/lean, library/tactic): remove redundant error messages, and fix position of error messages 
Summary:

We minimize the number of "'sorry' used warning messages".  We also
re-target the error to the main declaration. Example: foo._main ==> foo
We do not report for auxiliary declarations such as "_example" and
"foo.equations._eqn_1"

Get rid of the redundant error message "error : failed" for tactics.
We added "silent failures" in the tactic framework.

We do not store line/col information for tactics nested in notation
declarations.  Before this commit, we would have tactics such
as (tactic.save_info line col) nested inside of notation declarations.
 2017-02-07 20:25:28 -08:00
Leonardo de Moura
38557b5d6c feat(library/init/data/nat/basic): missing lemma 2017-02-07 17:21:26 -08:00
Leonardo de Moura
e06d6aa6d4 feat(frontends/lean/elaborator): relax condition on match-convoy 2017-02-07 16:11:43 -08:00
Leonardo de Moura
96ccb148b1 feat(library/init/meta/simp_tactic): add top_down simplifier combinator 2017-02-06 20:06:13 -08:00
Leonardo de Moura
a28d6a94fd feat(library/init/meta): add any_goals tactic 2017-02-06 16:23:29 -08:00
Leonardo de Moura
28cd022486 feat(library/data/vector): add to_list lemmas 2017-02-06 14:57:04 -08:00
Leonardo de Moura
ae06844f57 chore(library/init/meta): remove unnecessarily '| failed' annotations 
tactic and smt_tactic are instaces of monad_fail
 2017-02-05 20:12:42 -08:00
Leonardo de Moura
55aa2023f4 feat(frontends/lean): add support for monad_fail type class in 'do' blocks 2017-02-05 20:09:08 -08:00
Leonardo de Moura
8b662d19ac feat(library/init/category/monad_fail): add monad_fail type class 2017-02-05 18:46:29 -08:00
Leonardo de Moura
797b26f402 fix(frontends/lean/tactic_notation): trace messages in nested blocks were not being displayed in the correct place 2017-02-05 18:20:10 -08:00
Leonardo de Moura
30a1876fc8 feat(library/init/meta): add add_aux_decl and abstract tactics 2017-02-05 16:00:47 -08:00
Leonardo de Moura
1eb771f5a1 chore(library/init/meta/async_tactic): missing copyright 2017-02-05 14:47:43 -08:00
Gabriel Ebner
95068e4e79 feat(library/sorry): make sorry a macro 2017-02-05 14:01:03 +01:00
Rob Lewis
d18a47b588 feat(tactic): add tactic_format instances 2017-02-04 15:30:55 -08:00
Leonardo de Moura
b28ed2453e feat(frontends/lean/definition_cmds): allow meta recursive definitions without recursive equations 2017-02-04 13:44:05 -08:00
Leonardo de Moura
aff5a2dd37 fix(library/init/meta): bug introduced 9bee8ce36d 2017-02-03 17:01:46 -08:00
Leonardo de Moura
2640d3085b fix(library/init/meta/interactive): name resolution problems in parametric sections 2017-02-03 14:04:59 -08:00
Leonardo de Moura
9bee8ce36d fix(frontends/lean/elaborator): thunk gadget should not be considered in patterns 
The new test demonstrates the problem.
 2017-02-02 17:28:03 -08:00
Leonardo de Moura
bb9a0c79f4 feat(frontends/lean/builtin_exprs): better syntax for quoted terms with type ascription 2017-02-01 12:49:38 -08:00
Leonardo de Moura
6e7929252f feat(frontends/lean, library/init): add 'thunk' gadget 
We can now write
   trace "hello" t
instead of
   trace "hello" (fun _, t)
 2017-01-31 18:41:59 -08:00
Leonardo de Moura
7cc31835e4 refactor(library/init/meta/fun_info): cleanup fun_info API 2017-01-31 18:01:54 -08:00
Leonardo de Moura
49a0d13c50 feat(library/init/coe): add coercion from A to (option A) 
A little hack is used to make sure type class resolution will not enter
in an infinite loop.
 2017-01-31 17:45:41 -08:00
Leonardo de Moura
920e845b84 refactor(library/init/meta/congr_lemma): cleanup congr_lemma API 2017-01-31 16:46:13 -08:00
Leonardo de Moura
2b56040499 fix(library/init/propext): Type => Sort 2017-01-30 19:17:57 -08:00