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Author SHA1 Message Date
Leonardo de Moura
08845be2fc feat(frontends/lean/notation_cmd): improve 'notation' cmd 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-06-18 09:28:01 -07:00
Leonardo de Moura
3e3c4ee5ed feat(frontends/lean/parser): add local_scope object to Lua API 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-06-18 08:38:23 -07:00
Leonardo de Moura
6259d20218 feat(frontends/lean/parser): expand Lua parser API 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-06-18 08:03:17 -07:00
Leonardo de Moura
3ea24c0f32 fix(library/kernel_bindings): set_environment and set_io_state objects 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-06-17 22:36:47 -07:00
Leonardo de Moura
06002c5312 feat(frontends/lean/parser): use system_import when processing Lean import command 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-06-17 22:09:42 -07:00
Leonardo de Moura
1378fa5cbb refactor(util/script_state): remove support for threads and communication channels from the Lua API, the goal is to keep is simple, and use one Lua state object per thread 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-06-17 21:56:45 -07:00
Leonardo de Moura
f17e8a853a feat(frontends/lean): allow parser actions to be implemented using Lua 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-06-17 21:56:16 -07:00
Leonardo de Moura
4cbc429192 feat(frontends/lean/calc): add parse_calc function 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-06-17 17:16:15 -07:00
Leonardo de Moura
037cfcf622 refactor(frontends/lean/notation_cmd): add register_notation_cmds procedure 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-06-17 13:39:44 -07:00
Leonardo de Moura
e178979061 feat(frontends/lean): add calc_subst, calc_refl, calc_trans commands for configuring calc-expressions 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-06-17 13:35:31 -07:00
Leonardo de Moura
ddba6b222a feat(frontends/lean): add calculational proof environment extension, it stores transitivity, reflexivity (and substitution) rules 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-06-17 13:13:13 -07:00
Leonardo de Moura
28c904abea feat(frontends/lean/parser): add 'flag' for disabling 'unknown identifier' errors 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-06-17 10:30:03 -07:00
Leonardo de Moura
4be05e1d8c refactor(frontends/lean): expose notation_entry and token_entry structures, and add functions for parsing notation without affecting the environment 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-06-17 10:12:04 -07:00
Leonardo de Moura
819c8276f2 feat(frontends/lean/builtin_cmds): add 'variables' command family 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-06-17 08:25:00 -07:00
Leonardo de Moura
ea49176043 feat(frontends/lean/builtin_cmds): add 'using' command, and 'hiding/renaming' directives 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-06-16 18:42:39 -07:00
Leonardo de Moura
639d58f4c7 feat(frontends/lean/builtin_cmds): add 'print options' command 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-06-16 17:31:28 -07:00
Leonardo de Moura
3e377a9732 feat(frontends/lean/builtin_cmds): add 'set_option' command 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-06-16 17:27:43 -07:00
Leonardo de Moura
82e79d9c78 fix(frontends/lean/parser): style 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-06-16 16:54:44 -07:00
Leonardo de Moura
a964ceb0e2 feat(frontends/lean): add 'import' command, add command line option for setting number of threads 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-06-16 16:37:46 -07:00
Leonardo de Moura
4f3da90443 feat(frontends/lean/builtin_exprs): add 'have' and 'show' expressions 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-06-16 15:04:29 -07:00
Leonardo de Moura
07f2379dec refactor(kernel): add mk_local function that has only two arguments 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-06-16 14:27:26 -07:00
Leonardo de Moura
f1e3449aae fix(frontends/lean): propagate position information 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-06-16 13:20:10 -07:00
Leonardo de Moura
f70b1b028a feat(frontends/lean): provide position to parse_fn external function, add 'by' expression 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-06-16 12:28:58 -07:00
Leonardo de Moura
34dfacc10e refactor(frontends/lean): Bool does not need to be a reserved keyword 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-06-16 10:52:12 -07:00
Leonardo de Moura
6db265e7ab feat(frontends/lean/builtin_exprs): parse '_' placeholder 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-06-16 10:41:08 -07:00
Leonardo de Moura
5ce0502a36 feat(frontends/lean/builtin_exprs): add parser for 'let' expressions 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-06-16 09:50:34 -07:00
Leonardo de Moura
775e10186d refactor(parser): use 'scope objects' for creating local scopes and setting m_type_use_placeholder flag 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-06-16 09:24:41 -07:00
Leonardo de Moura
27130c9499 feat(frontends/lean): local notation 'shadows' global one 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-06-15 11:50:41 -07:00
Leonardo de Moura
28047a33ae feat(frontends/lean): add local notation support 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-06-15 11:30:52 -07:00
Leonardo de Moura
64cafd6875 feat(frontends/lean/notation_cmd): add 'notation' command 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-06-15 10:49:05 -07:00
Leonardo de Moura
9b389a96d5 feat(frontends/lean/notation_cmd): modify infixl/infixr/postfix command syntax 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-06-15 08:28:49 -07:00
Leonardo de Moura
e7019ec840 feat(frontends/lean): add infixl/infixr/postfix/precedence commands, add support for storing notation in .olean files, add support for organizing notation into namespaces 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-06-14 22:13:25 -07:00
Leonardo de Moura
891a3fb48b feat(frontends/lean): add command block reader with snapshot and resume 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-06-14 14:13:32 -07:00
Leonardo de Moura
6b99a29c2c refactor(frontends/lean): add local_decls template that is cheap to copy 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-06-14 09:56:05 -07:00
Leonardo de Moura
5fee6fd140 feat(shell/lean): add '-o' command line option 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-06-14 08:10:43 -07:00
Leonardo de Moura
282a35bd1b feat(frontends/lean): add '#setline' directive 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-06-14 07:28:56 -07:00
Leonardo de Moura
48c58af9b5 feat(frontends/lean/parser): allow explicit universe level to be provided to aliases and locals 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-06-13 18:00:52 -07:00
Leonardo de Moura
a65c43c0db feat(frontends/lean/builtin_cmds): add definition command family 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-06-13 17:30:35 -07:00
Leonardo de Moura
01cecb76db feat(frontends/lean/builtin_cmds): add 'variable' command family 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-06-13 15:13:50 -07:00
Leonardo de Moura
ce259e6265 feat(frontends/lean/parser): add namespace/section/end commands, add support for explicit universe levels, fix Type notation' 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-06-13 11:34:43 -07:00
Leonardo de Moura
5aca452439 feat(library/aliases): add 'exceptions' and support for universes to add_aliases procedure, add for_each_universe method to environment 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-06-13 08:26:05 -07:00
Leonardo de Moura
d50376249f feat(library/aliases): add level aliases 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-06-12 12:35:02 -07:00
Leonardo de Moura
3bde699fbe feat(frontends/lean/parser): add parse_level 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-06-12 12:34:55 -07:00
Leonardo de Moura
5a008717a4 feat(frontends/lean/parser): add parse_notation 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-06-11 21:00:34 -07:00
Leonardo de Moura
e7d7996fa9 feat(frontends/lean/parser): add parser_binder(s) and abstract methods 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-06-11 18:51:12 -07:00
Leonardo de Moura
959c3ffc68 feat(frontends/lean/parser): add parse_id method 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-06-11 15:09:16 -07:00
Leonardo de Moura
1972a09021 feat(frontends/lean/builtin_cmds): add simple 'print' command 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-06-11 14:35:34 -07:00
Leonardo de Moura
7fd502993b refactor(frontends/lean/cmd_table): remove register_builtin_cmd procedures, they would cause initialization problems 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-06-11 14:35:34 -07:00
Leonardo de Moura
2e8ebb6d9e feat(frontends/lean/parser): add 'parse_commands' and 'parse_script' 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-06-11 14:32:07 -07:00
Leonardo de Moura
8fcc25d55a fix(frontends/lean/token_table): static initialization problem 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-06-11 10:56:04 -07:00
Leonardo de Moura
3dc26666b9 feat(frontends/lean): add parser interface 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-06-10 18:20:59 -07:00
Leonardo de Moura
d3e3301208 refactor(frontends/lean/scanner): use the parser configuration in the environment 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-06-10 10:59:12 -07:00
Leonardo de Moura
e2adb101d5 feat(frontends/lean): add parser_config environment extension 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-06-10 10:39:22 -07:00
Leonardo de Moura
d81df2efe2 feat(frontends/lean/parse_table): add use_lambda_abstraction flag to scoped_expr_actions 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-06-10 09:39:01 -07:00
Leonardo de Moura
546f9dc00b chore(frontends/lean): use consistent name conventions, rename token_set to token_table 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-06-10 09:18:57 -07:00
Leonardo de Moura
00e0cc15ba feat(frontends/lean/token_set): add token_set Lua API 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-06-09 16:49:22 -07:00
Leonardo de Moura
af0c93e0eb feat(frontends/lean/parse_table): add typedef for notation::parse_table 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-06-09 15:54:56 -07:00
Leonardo de Moura
439b6c1e96 feat(frontends/lean/parse_table): add parse_table Lua API 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-06-09 15:33:39 -07:00
Leonardo de Moura
722ea7273e feat(frontends/lean): add parse_table datastructure 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-06-09 13:20:33 -07:00
Leonardo de Moura
d10d70423a feat(frontends/lean): add new scanner 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-06-05 18:57:26 -07:00
Leonardo de Moura
4cf1b05831 refactor(library/token_set): move to frontends/lean 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-06-05 13:10:50 -07:00
Leonardo de Moura
e79e0302d0 fix(frontends/lean): style 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-05-15 16:09:21 -07:00
Leonardo de Moura
c6af56260e refactor(frontends/lean): remove dead code 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-05-15 15:51:41 -07:00
Leonardo de Moura
f7e705badb refactor(library/kernel_bindings): reactive some of the kernel Lua bindings 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-04-29 11:52:09 -07:00
Leonardo de Moura
af927ecb7a refactor(frontends/lua): reactivate some of the Lua extensions 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-04-28 17:57:39 -07:00
Leonardo de Moura
aa8240985a test(examples/lean): small version of algebraic hierarchy (proof of concept) 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-02-24 20:51:19 -08:00
Leonardo de Moura
d79e9af210 fix(frontends/lean): help msg 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-02-18 09:31:30 -08:00
Leonardo de Moura
0878b44fc7 feat(frontends/lean): allow user to import several theories using a single import 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-02-11 17:15:12 -08:00
Leonardo de Moura
a2d2e36f04 refactor(frontends/lean): remove notation for creating tuples 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-02-10 09:03:42 -08:00
Leonardo de Moura
633ed6bb69 fix(frontends/lean/parser): bug in add_rewrite 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-02-09 09:46:56 -08:00
Leonardo de Moura
b24c085cb0 feat(frontends/lean): avoid warning message 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-02-09 09:26:51 -08:00
Leonardo de Moura
24528ff685 fix(library/elaborator): fix glitches in the elaborator that were forcing us to provide parameters explicitly 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-02-07 18:02:08 -08:00
Leonardo de Moura
1ec01f5757 refactor(builtin): merge pair.lean with kernel.lean, and add basic theorems 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-02-07 16:04:44 -08:00
Leonardo de Moura
ad7b13104f feat(*): add support for heterogeneous equality in the parser, elaborator and simplifier, adjusts unit test to reflect changes 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-02-07 15:03:16 -08:00
Leonardo de Moura
6d7ec9d7b6 refactor(kernel): add heterogeneous equality back to expr 
The main motivation is that we will be able to move equalities between universes.

For example, suppose we have
    A : (Type i)
    B : (Type i)
    H : @eq (Type j) A B
where j > i

We didn't find any trick for deducing (@eq (Type i) A B) from H.
Before this commit, heterogeneous equality as a constant with type

   heq : {A B : (Type U)} : A -> B -> Bool

So, from H, we would only be able to deduce

   (@heq (Type j) (Type j) A B)

Not being able to move the equality back to a smaller universe is
problematic in several cases. I list some instances in the end of the commit message.

With this commit, Heterogeneous equality is a special kind of expression.
It is not a constant anymore. From H, we can deduce

   H1 : A == B

That is, we are essentially "erasing" the universes when we move to heterogeneous equality.
Now, since A and B have (Type i), we can deduce (@eq (Type i) A B) from H1. The proof term is

  (to_eq (Type i) A B (to_heq (Type j) A B H))  :  (@eq (Type i) A B)

So, it remains to explain why we need this feature.

For example, suppose we want to state the Pi extensionality axiom.

axiom hpiext {A A' : (Type U)} {B : A → (Type U)} {B' : A' → (Type U)} :
      A = A' → (∀ x x', x == x' → B x == B' x') → (∀ x, B x) == (∀ x, B' x)

This axiom produces an "inflated" equality at (Type U) when we treat heterogeneous
equality as a constant. The conclusion

     (∀ x, B x) == (∀ x, B' x)

is syntax sugar for

   (@heq (Type U) (Type U) (∀ x : A, B x) (∀ x : A', B' x))

Even if A, A', B, B' live in a much smaller universe.

As I described above, it doesn't seem to be a way to move this equality back to a smaller universe.

So, if we wanted to keep the heterogeneous equality as a constant, it seems we would
have to support axiom schemas. That is, hpiext would be parametrized by the universes where
A, A', B and B'. Another possibility would be to have universe polymorphism like Agda.
None of the solutions seem attractive.

So, we decided to have heterogeneous equality as a special kind of expression.
And use the trick above to move equalities back to the right universe.

BTW, the parser is not creating the new heterogeneous equalities yet.
Moreover, kernel.lean still contains a constant name heq2 that is the heterogeneous
equality as a constant.

Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-02-07 10:28:10 -08:00
Leonardo de Moura
ff955f9830 chore(frontends/lean/parser): update comments 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-02-06 20:56:31 -08:00
Leonardo de Moura
593f1f2ebd fix(frontends/lean): allow user set constants defined in other namespaces as opaque 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-02-06 20:56:31 -08:00
Leonardo de Moura
4b4b5e3345 fix(frontends/lean): import explicit versions when using the command 'using' 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-02-06 17:33:58 -08:00
Leonardo de Moura
ea06bb2885 feat(frontends/lean/pp): change how lift local entries are pretty printed 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-02-06 17:26:38 -08:00
Leonardo de Moura
a51139e63b feat(frontends/lean): position information in error messages 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-02-06 17:26:38 -08:00
Leonardo de Moura
e85b1f1ac0 feat(library/elaborator): expose elaborator configuration options 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-02-06 17:26:38 -08:00
Leonardo de Moura
1d23d93e60 feat(frontends/lean): new 'have' expression 
Add 'have' notation suggested by Jeremy Avigad.
Add his example to the test suite.

Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-02-06 08:03:59 -08:00
Leonardo de Moura
ba9a8f9d98 feat(frontends/lean): add 'show' expression syntax sugar 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-02-06 07:50:22 -08:00
Leonardo de Moura
493007b7bc fix(frontends/lean/pp): bug in tuple/pair pretty printing 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-02-04 13:58:01 -08:00
Leonardo de Moura
c9b72df34b fix(frontends/lean/parser): bug when applying tactics to synthesize remaining meta-variables 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-02-04 11:36:26 -08:00
Leonardo de Moura
9dc86e3cf5 fix(builtin/kernel): rename generalized proof_irrel axiom to hproof_irrel, and derive the restricted one 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-02-04 10:06:29 -08:00
Leonardo de Moura
61d0c792ff fix(frontends/lean/parser): bug in tuple/proj1/proj2 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-02-03 22:46:29 -08:00
Leonardo de Moura
4fcc292332 feat(frontends/lean): parse and pretty print pair/tuple projection operators proj1 and proj2, fix bug in the type checker 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-02-03 22:10:01 -08:00
Leonardo de Moura
cc96b50644 feat(frontends/lean): support for nary-tuples, improve notation for non-dependent tuples, add support in the elaborator for sigma types 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-02-03 20:53:11 -08:00
Leonardo de Moura
5c991f8fbf feat(frontends/lean): parse and pretty print tuples/pairs 
This commit also fixes a bug in the type checker when processing dependent pairs.

Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-02-03 20:10:30 -08:00
Leonardo de Moura
5e5ab1429d feat(frontends/lean): parse and pretty print sigma types 
This commit also fixes some bugs in the implementation of Sigma types.

Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-02-03 18:16:00 -08:00
Leonardo de Moura
c56df132b8 refactor(kernel): remove semantic attachments from the kernel 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-02-02 14:48:27 -08:00
Leonardo de Moura
759aa61f70 refactor(builtin/kernel): define if-then-else using Hilbert's operator 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-01-30 19:28:42 -08:00
Leonardo de Moura
b45ab9dc30 feat(library/elaborator): use equality constraints instead of convertability constraints on definitions 
Convertability constraints are harder to solve than equality constraints, and it seems they don't buy us anything definitions. They are just increasing the search space for the elaborator.

Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-01-30 14:13:21 -08:00
Leonardo de Moura
ea6bf224e5 feat(frontends/lean): make the parser accept (Type -> ...) 
Before this commit, the parser would accept only a universe level or a ')' after '(' 'Type'

Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-01-29 15:23:20 -08:00
Leonardo de Moura
4dc3aa46c3 feat(frontends/lean): allow tactics to be used in axiom/variable declarations and in the type of definitions/theorems; add a new test showing the need for this feature 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-01-29 12:02:12 -08:00
Leonardo de Moura
f0a2d3627e refactor(frontends/lean): use ascii prefix for auxiliary let-declarations 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-01-29 11:58:09 -08:00
Leonardo de Moura
7f53cb9601 feat(frontends/lean/parser): add_rewrite take the 'using' command into account 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-01-28 01:15:28 -08:00
Leonardo de Moura
4d25cb7f47 feat(library/tactic): add simplify_tactic based on the simplifier 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-01-26 18:53:18 -08:00
Leonardo de Moura
e8bba1ebf3 fix(frontends/lean/frontend): the definition of the explicit version @f must be definitionally equal to f 
Before this commit, the explicit version @f of a constant f with implicit arguments as not definitionally equal to f.

For example, if we had

variable f {A : Type} : A -> Bool

Then, the definition of @f was

definition @f (A : Type) (a : A) : Bool := f A a

This definition is equivalent to
     fun A a, f A a
which is not definitionally equal to
     f
since definitionally equality in Lean ignores Eta conversion.

Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-01-25 20:34:28 -08:00