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Author SHA1 Message Date
Leonardo de Moura
c73398a0b8 refactor(library/simplifier): relax rule for conditional equalities 
The idea is to support conditional equations where the left-hand-side does not contain all theorem arguments, but the missing arguments can be inferred using type inference.
For example, we will be able to have the eta theorem as rewrite rule:

theorem eta {A : TypeU} {B : A → TypeU} (f : ∀ x : A, B x) : (λ x : A, f x) = f
:= funext (λ x : A, refl (f x))

Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-01-15 16:06:00 -08:00
Leonardo de Moura
3daac17ea8 feat(library/simplifier): convert disequalities (a ≠ b) into equations '(a = b) = false' 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-01-15 15:30:16 -08:00
Leonardo de Moura
1176093afa refactor(library/simplifier): simplifier should only use homogeneous equalities 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-01-15 14:58:32 -08:00
Leonardo de Moura
f177c8d1ec fix(library/elaborator): missing condition 
The elaborator was failing in the following higher-order constraint

   ctx |- (?M a) = (?M b)

This constraint has solution, but the missing condition was making the elaborator to reduce this problem to

   ctx |- a = b

That does not have a solution.

Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-01-15 14:11:36 -08:00
Leonardo de Moura
f67b5c4d00 test(tests/lua): more to_ceqs tests 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-01-15 13:50:35 -08:00
Leonardo de Moura
c651d3ea2d feat(library/simplifier): filter out propositions that cannot be used as conditional equations 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-01-15 12:06:27 -08:00
Leonardo de Moura
94fa987814 fix(kernel/type_checker): is_proposition method was still assuming that a Pi never has type Bool 
The method is_proposition was using an optimization that became incorrect after  we identified Pi and forall.
It was assuming that any Pi expression is not a proposition.
This is not true anymore. Now, (Pi x : A, B) is a proposition if B is a proposition.

Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-01-15 11:02:52 -08:00
Leonardo de Moura
91e1f9fc02 fix(tests/lean): adjust test to reflect recent changes 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-01-15 10:20:35 -08:00
Leonardo de Moura
3ab2d2a441 fix(frontends/lean/parser): memory leak due to g++ bug 
g++ implementation of std::initializer_list has bug.
http://gcc.gnu.org/ml/gcc-bugs/2013-06/msg00095.html

This commit memory leaks triggered by this bug.
It also adds minimal tests to expose three different instances of the problem.

Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-01-15 10:15:04 -08:00
Leonardo de Moura
97d9765992 fix(tests/lua/threads): increase timeout to make sure it passes the test on slow machines 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-01-15 08:46:14 -08:00
Leonardo de Moura
83efa644d1 fix(frontends/lean/parser): uninitialized var error reported by valgrind 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-01-15 08:43:43 -08:00
Leonardo de Moura
28eb980484 fix(build): C++ module dependency problem, and style 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-01-14 18:30:31 -08:00
Leonardo de Moura
c8e1ec87d2 feat(library/simplifier): add to_ceqs function that converts a theorem into a sequence of conditional equations 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-01-14 18:30:19 -08:00
Leonardo de Moura
7c2a4211a8 feat(kernel): expose imported predicate 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-01-14 16:41:40 -08:00
Leonardo de Moura
07059b0531 feat(library): add if_then_else Lean/C++ interface 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-01-14 16:10:49 -08:00
Leonardo de Moura
8217a544cc fix(library/hop_match): bugs in the higher-order matching procedure, add more tests 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-01-14 14:37:28 -08:00
Leonardo de Moura
acfb11e290 fix(kernel/instantiate): relax apply_beta pre-condition 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-01-14 14:36:51 -08:00
Leonardo de Moura
a968a43487 fix(kernel/free_vars): make sure has_free_var does not return incorrect result due to arithmetic overflows 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-01-14 14:36:14 -08:00
Leonardo de Moura
485ca842c9 test(tests/lua): extra tests for Lua hierachical name API 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-01-14 11:38:10 -08:00
Leonardo de Moura
f8eaae7218 feat(builtin/kernel): add new useful theorems for the simplifier 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-01-13 18:21:22 -08:00
Leonardo de Moura
4595c50f7e fix(library/hop_match): in locally bound variable management 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-01-13 18:06:23 -08:00
Leonardo de Moura
ccb9faf065 refactor(*): error messages 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-01-13 16:54:21 -08:00
Leonardo de Moura
55aa4cbfa3 feat(frontends/lean): improve error message for expressions containing unsolved metavariables 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-01-13 13:21:44 -08:00
Leonardo de Moura
12451e4a35 feat(frontends/lean/pp): display implicit arguments when expression contains metavariables 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-01-13 12:42:05 -08:00
Leonardo de Moura
d83a13d044 doc(doc/lean/tutorial): update tutorial 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-01-12 21:56:08 -08:00
Leonardo de Moura
84f017f127 chore(tests/lua): use default environment instead of creating a new one 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-01-12 18:24:04 -08:00
Leonardo de Moura
35bacf95fc feat(shell): provide the default environment when parsing Lua files 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-01-12 18:21:14 -08:00
Leonardo de Moura
7f818ecd92 feat(library): match procedure for higher-order patterns 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-01-12 17:45:24 -08:00
Leonardo de Moura
e6c322d97f feat(kernel/free_vars): make free_vars module functions more robust 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-01-12 17:44:28 -08:00
Leonardo de Moura
29fec3fecc fix(builtin/util): bug incorrect encoding of \t and \n in regular expression, and missing local 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-01-12 17:40:41 -08:00
Leonardo de Moura
915644f3b3 fix(util/debug): avoid infinite loop when Ctrl-D is pressed after an assertion violation 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-01-12 17:20:35 -08:00
Leonardo de Moura
5d9a95addd refactor(kernel/free_vars): replace max_free_var with relaxed free_var_range 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-01-12 17:06:57 -08:00
Leonardo de Moura
582569b793 feat(frontends/lean): allow the user to set the trust_imported flag when creating environments using Lua 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-01-12 16:46:53 -08:00
Leonardo de Moura
4d9eb4ac6c feat(kernel): add max_free_var function 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-01-12 16:45:34 -08:00
Leonardo de Moura
f2cac0410e doc(examples/lean): new examples 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-01-11 20:21:16 -08:00
Leonardo de Moura
6508e63a17 feat(builtin/macros): add assume/take macros for making proof scripts more readable 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-01-11 18:36:37 -08:00
Leonardo de Moura
781720a26a feat(builtin/kernel): add left_comm theorem 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-01-11 18:08:08 -08:00
Leonardo de Moura
a1a467a65f refactor(builtin): move congruence theorems to kernel/if_then_else modules 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-01-11 13:48:28 -08:00
Leonardo de Moura
a0a92f11b7 feat(builtin/congr): add congruence theorems for contextual simplification 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-01-11 13:37:36 -08:00
Leonardo de Moura
53537d0684 feat(builtin/kernel): 'implication' simplification theorems 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-01-11 13:35:20 -08:00
Leonardo de Moura
50f281b430 feat(builtin/kernel): add eqf_intro and eqf_elim theorems 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-01-11 11:13:54 -08:00
Leonardo de Moura
4057f0d2fe feat(emacs): minor improvements to emacs mode 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-01-11 11:13:20 -08:00
Leonardo de Moura
745c702ffb fix(build): dependency problem on some platforms 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-01-10 19:06:15 -08:00
Leonardo de Moura
d4a7d796a5 feat(builtin): prove strong induction theorem, add < theorems 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-01-10 18:46:33 -08:00
Leonardo de Moura
5fb718c03a fix(build): broken dependencies between lean executable and .olean, *_decls.cpp and *_decls.h files 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-01-10 10:58:35 -08:00
Leonardo de Moura
9e8b083673 feat(emacs): more highlighting 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-01-09 20:44:01 -08:00
Leonardo de Moura
b85b45b40f test(tests/lean): When and Cond tactical tests 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-01-09 20:43:39 -08:00
Leonardo de Moura
3008cad151 feat(emacs): highlight tactics 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-01-09 20:10:57 -08:00
Leonardo de Moura
2cf73fc4d2 feat(emacs): useful abbreviations 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-01-09 19:57:00 -08:00
Leonardo de Moura
65bdb9c7e0 fix(frontends/lean): unprotected call to Lua API 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-01-09 19:56:20 -08:00