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209 commits

Author SHA1 Message Date
Leonardo de Moura
938b4e8421 test(tests/lean/run): add unicode in identifiers test 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-08-02 20:05:46 -07:00
Leonardo de Moura
fbc4a7af3b feat(library/unifier): when unifier.expensive == true, then use only restrict higher-order unification (a fragment slightly more general than higher-order pattern matching) for solving class-instance constraints 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-08-02 14:30:25 -07:00
Leonardo de Moura
5e2185cfbe feat(library/unifier): postpone as much as possible universe constraints of the form ?m1 =?= max(l1, l2) and ?m1 =?= imax(l1, l2) where ?m1 occurs in the right hand side. When there is nothing else to be done, try to solve them by reducing to ?m1 = l1 and ?m1 = l2. 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-08-02 09:14:35 -07:00
Leonardo de Moura
3795d466c1 fix(frontends/lean/elaborator): provide type information for expressions using '@' operator, and strict function applications 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-08-01 20:57:24 -07:00
Leonardo de Moura
4cb8fb20fe fix(frontends/lean/elaborator): bug when mixing string and non-strict implict arguments 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-08-01 10:58:20 -07:00
Leonardo de Moura
8e6324185a fix(tests/lean): adjust tests to new library structure 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-08-01 09:37:23 -07:00
Leonardo de Moura
6ca80b5000 feat(frontends/lean): add 'sorry' 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-07-31 18:35:57 -07:00
Leonardo de Moura
de05c041c7 feat(library/unifier): add flag for enabling/disabling expensive extensions in the unifier 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-07-31 16:46:16 -07:00
Leonardo de Moura
f57fc33442 fix(library/unifier): bug that was making unifier miss solutions, and add a new case-split that tries to solve flex_rigid constraints by putting the rhs into whnf 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-07-31 16:46:16 -07:00
Leonardo de Moura
9637ceb86e feat(frontends/lean): allow user to provide a terminator for 'foldr' and 'foldl' 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-07-30 15:04:44 -07:00
Leonardo de Moura
450131692a fix(library/converter): missing constraint on eta expansion 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-07-30 10:43:47 -07:00
Leonardo de Moura
936bb2744b fix(library/unifier): add a flag to sign that a choice constraint owns a metavariable ?m, that is, it has the right to assign ?m, and the unifier should postpone any other constraint that tries to assign ?m 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-07-29 17:32:55 -07:00
Leonardo de Moura
b15f1bb8c7 fix(frontends/lean/elaborator): apply coercions in definitions 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-07-29 13:55:39 -07:00
Leonardo de Moura
501cae37e5 fix(frontends/lean/parser): bug in check_constant_next (when invoked inside of a section) 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-07-29 13:04:58 -07:00
Leonardo de Moura
105c29b51e refactor(library/standard): use new coding style, rename bool.b0 and bool.b1 to bool.ff and bool.tt 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-07-28 19:59:38 -07:00
Leonardo de Moura
4b2e403023 test(tests/lean/run): add more tests sent by Cody 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-07-27 12:17:38 -07:00
Leonardo de Moura
faee08591f fix(*): make sure elaborator and type_checker use the same "rules" for treating opaque definitions 
This is a big change because we have to store in constraints whether we can use the "relaxed" rules or not.
The "relaxed" case says that when type checking the value of an opaque definition we can treat other opaque definitions in the same module as transparent.

Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-07-27 12:12:54 -07:00
Leonardo de Moura
6ca120bf77 test(tests/lean/run): add Cody's file to test suite 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-07-27 08:17:46 -07:00
Leonardo de Moura
23af5ab217 fix(library/unifier): eager whnf application 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-07-26 10:37:02 -07:00
Leonardo de Moura
e79b0b11cf test(tests/lean/run): another test for the unifier 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-07-25 20:55:05 -07:00
Leonardo de Moura
cf44c80ffb fix(library/inductive_unifier_plugin): do not try to solve type incorrect constraints 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-07-25 16:00:38 -07:00
Leonardo de Moura
7b84503133 fix(library/unifier): do not let a unification plugin to 'prioritize' a flex-flex constraint, and add missing case 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-07-25 15:03:57 -07:00
Leonardo de Moura
0f12e5a35b fix(library/inductive_unifier_plugin): unification problem failure on problems with inductive datatypes 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-07-25 13:49:45 -07:00
Leonardo de Moura
21176c61fe fix(tests/lean): move crash.lean to different directory 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-07-25 08:48:35 -07:00
Leonardo de Moura
e7c7d5718a fix(frontends/lean/pp): fix bug in the pretty printer 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-07-25 08:30:30 -07:00
Leonardo de Moura
15c1e39f88 feat(frontends/lean/elaborator): distribute application over choice, this feature improves the support for overloaded aliases 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-07-24 23:43:40 -07:00
Leonardo de Moura
905a1095f9 fix(tests/lean/run/tactic14): remove not_intro, it is not needed anymore 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-07-24 23:41:23 -07:00
Leonardo de Moura
5529ef1056 feat(library/standard): add function 'helper' module 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-07-24 16:29:39 -07:00
Leonardo de Moura
d998bf9300 test(tests/lean/run): add some 'lost' tests 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-07-23 08:22:53 -07:00
Leonardo de Moura
b522ea6f2d refactor(library/standard): rename bit to bool 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-07-22 09:49:54 -07:00
Leonardo de Moura
5eaf04518b refactor(*): rename Bool to Prop 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-07-22 09:43:18 -07:00
Leonardo de Moura
a9f7d87aae test(tests/lean/run/decidable): show implicit argument that is computed automatically 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-07-22 05:58:36 -07:00
Leonardo de Moura
5e8c128b00 feat(library/standard): add more decidable instances 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-07-20 01:10:49 +01:00
Leonardo de Moura
6b60db7b93 fix(frontends/lean/elaborator): bug when mixing implicit arguments and sections 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-07-19 09:55:34 +01:00
Leonardo de Moura
0f44e3c9f4 fix(frontends/lean): calc configuration commands, add check_constant_next auxiliary method 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-07-15 01:19:47 +01:00
Leonardo de Moura
2e6184a721 fix(frontends/lean): more bugs in section management 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-07-14 06:27:36 +01:00
Leonardo de Moura
8167ad329f fix(frontends/lean): bug in section management 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-07-14 05:04:01 +01:00
Leonardo de Moura
fab7934265 refactor(frontends/lean/elaborator): modify when tactic_hints are invoked, add the notion of strict placeholder 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-07-14 02:53:02 +01:00
Leonardo de Moura
e432e23115 test(tests/lean/run/class5): improve test 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-07-13 22:39:16 +01:00
Leonardo de Moura
1d273fcfdd chore(frontends/lean): rename 'obtains' to 'obtain' 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-07-12 06:35:24 +01:00
Leonardo de Moura
1230e942aa feat(library/unifier): handle 'first-order' flex-flex constraints 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-07-11 04:51:28 +01:00
Leonardo de Moura
cf34f75ab5 feat(frontends/lean): add 'obtains' expression 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-07-11 04:08:51 +01:00
Leonardo de Moura
92bb046854 test(tests/lean/run): add nested let-expr test 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-07-10 15:56:15 +01:00
Leonardo de Moura
c13c75b93e feat(frontends/lean/pp): add option for displaying fully qualified names 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-07-10 15:55:19 +01:00
Leonardo de Moura
06beff327f test(tests/lean/run): add more universe tests 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-07-10 14:43:55 +01:00
Leonardo de Moura
1a6d0784f2 feat(kernel/level): improve universe level normalization procedure 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-07-10 13:49:41 +01:00
Leonardo de Moura
d9b2801eeb feat(frontends/lean): use the same universe in declarations such as (A B : Type) 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-07-10 13:18:52 +01:00
Leonardo de Moura
12d89ea0b9 fix(kernel/level): is_geq predicate 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-07-10 13:18:41 +01:00
Leonardo de Moura
aff766430d fix(frontends/lean/pp): universe pretty printer 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-07-09 19:17:28 -07:00
Leonardo de Moura
43eba857cb feat(frontends/lean): add let-expr pretty printer, reduce default indentation to 2 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-07-09 18:47:10 -07:00
Leonardo de Moura
2ad1a93657 test(tests/lean/run): add append tactic test 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-07-08 18:21:22 -07:00
Leonardo de Moura
a1601e7a5f feat(library/tactic/apply_tactic): add option for 'refreshing' universe metavariables in the 'apply' tactic 
The new test ../../tests/lean/run/tactic27.lean demonstrates why we need this feature. The tactic 'apply @refl' is actually 'apply @refl.{?l}'. It is used inside of a repeat tactical. Each iteration of the 'repeat' may need to use a different value for ?l. Before this commit, there was not way to say we want a fresh ?l each iteration.

Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-07-08 16:55:23 -07:00
Leonardo de Moura
4505016154 feat(frontends/lean): allow tactic_hints to be applied when class-instance mechanism fails 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-07-08 15:08:13 -07:00
Leonardo de Moura
5e836092cc feat(frontends/lean): allow user to suppress proofs in theorems, and let them be inferred automatically using tactic_hints 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-07-08 15:08:13 -07:00
Leonardo de Moura
a3be63af73 feat(frontends/lean): add tactic_hint command 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-07-08 15:08:13 -07:00
Leonardo de Moura
da4c1922e3 feat(frontends/lean): add '_root_' prefix for referencing names in the root namespace 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-07-07 19:15:46 -07:00
Leonardo de Moura
b43fb7448c feat(frontends/lean): search for identifiers in the stack of namespaces; reject non-atomic names as local names 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-07-07 19:00:06 -07:00
Leonardo de Moura
e6d4c01b88 feat(frontends/lean): check whether namespace exists or not in the 'using' command, add to_valid_namespace_name helper function 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-07-07 18:17:10 -07:00
Leonardo de Moura
bd1873f6b1 feat(frontends/lean): add coercion modifier 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-07-07 17:48:20 -07:00
Leonardo de Moura
08465f049a feat(frontends/lean): remove [class] annotation and 'class' command, they are redundant, we only need [instance] and 'instance' 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-07-07 16:09:30 -07:00
Leonardo de Moura
112353861c feat(frontends/lean): rename command 'reset_proof_qed' to 'set_proof_qed' 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-07-07 15:48:16 -07:00
Leonardo de Moura
c16951aba6 fix(library/aliases): aliasing behavior 
The new test '../../tests/lean/run/alias3.lean' demonstrates the issue being fixed.

Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-07-07 15:40:55 -07:00
Leonardo de Moura
b9d08ff28c feat(frontends/lean/builtin_cmds): allow many namespaces in the same 'using' command 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-07-07 14:53:06 -07:00
Leonardo de Moura
d30f387e72 feat(library/standard): add namespace 'pair' 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-07-07 14:48:19 -07:00
Leonardo de Moura
10b0dfeb37 feat(frontends/lean/class): allow many instances to provided with a single 'instance' command 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-07-07 14:41:14 -07:00
Leonardo de Moura
b956ce68d2 feat(frontends/lean/elaborator): keep postponing delayed coercions until the type can be inferred 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-07-07 12:50:43 -07:00
Leonardo de Moura
831de22bcd fix(frontends/lean): bugs in notation management 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-07-07 09:31:42 -07:00
Leonardo de Moura
e8bd267a00 fet(frontends/lean): allow coercions to sort-class in the types of variable and definitions 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-07-06 21:54:16 -07:00
Leonardo de Moura
48b28ad75c fix(library/unifier): missing test in flex_rigid 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-07-06 21:36:23 -07:00
Leonardo de Moura
dcf7cf00ff fix(*): bugs in the type checker, inductive datatypes, and unifier 
The bugs were indentified when performing the tiny change in the file
tests/lean/run/group.lean
 2014-07-06 18:44:56 -07:00
Leonardo de Moura
9a13bef4f3 fix(frontends/lean): fix (and simplify) parameter universe inference 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-07-06 16:56:54 -07:00
Leonardo de Moura
8e5ac54ae1 test(tests/lean/run): group experiments 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-07-05 22:31:57 -07:00
Leonardo de Moura
55894f01e3 feat(frontends/lean): add 'opaque_hint' command 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-07-05 18:58:20 -07:00
Leonardo de Moura
e68a3e5251 test(tests/lean/run): add another class-instance example 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-07-05 17:41:08 -07:00
Leonardo de Moura
59755289e4 feat(library/unifier): case split on constraints of the form (f ...) =?= (f ...), where f can be unfolded, and there are metavariables in the arguments 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-07-05 15:52:40 -07:00
Leonardo de Moura
a52c9f4e2b feat(library/unifier): add option 'unifier.unfold_opaque', remove option 'unifier.use_exceptions' (the user should not be able to change this) 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-07-05 09:43:16 -07:00
Leonardo de Moura
efabd2280c feat(library/unifier): allow unifier to unfold opaque definitions of the current module 
It is not clear whether this is a good idea or not. In some cases, it seems to do more harm than good.

Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-07-05 00:46:03 -07:00
Leonardo de Moura
99fb6431a6 fix(frontends/lean/elaborator): support for local instances 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-07-04 18:38:08 -07:00
Leonardo de Moura
8ab0b5bee3 feat(frontends/lean/elaborator): use local declarations as class instances 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-07-04 18:18:25 -07:00
Leonardo de Moura
00e1a7db23 feat(frontends/lean/elaborator): add class instance elaboration 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-07-04 15:45:50 -07:00
Leonardo de Moura
b94ce412ae fix(library/unifier): non-termination 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-07-04 10:32:01 -07:00
Leonardo de Moura
a97f82be1a fix(library/standard): orelse notation, avoid conflict with inductive datatype declaration 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-07-04 10:10:05 -07:00
Leonardo de Moura
e0501104e2 feat(library/tactic): add 'fixpoint' tactic 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-07-04 01:30:28 -07:00
Leonardo de Moura
7fb2b0f6d8 feat(kernel): add method 'may_reduce_later' to normalizer_extension, and improve unifier 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-07-03 22:31:05 -07:00
Leonardo de Moura
855ffcba34 feat(library/standard): add pairs 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-07-03 20:43:16 -07:00
Leonardo de Moura
110b622b83 feat(library/unifier): add support for unification constraints of the form "(elim ... (?m ...)) =?= t", where elim is an eliminator 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-07-03 20:41:51 -07:00
Leonardo de Moura
b5f63e78ca feat(frontends/lean/notation_cmd): reuse existing precedence to increase compatibility with existing notation 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-07-03 17:23:29 -07:00
Leonardo de Moura
fa1857e6a9 fix(frontends/lean/notation_cmd): fix default, add 'prev' action 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-07-03 16:44:44 -07:00
Leonardo de Moura
abbd054b51 feat(library/tactic): add eassumption tactic, and remove redundant 'subgoals' from apply tactic 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-07-03 13:04:46 -07:00
Leonardo de Moura
d63ccbcf94 fix(library/unifier): missing case 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-07-03 10:51:59 -07:00
Leonardo de Moura
0ff145e59b feat(library/tactic): add apply tactic 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-07-03 09:20:01 -07:00
Leonardo de Moura
c1538bfc40 test(tests/lean/run): add 'apply subst' test 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-07-03 09:07:56 -07:00
Leonardo de Moura
a7d660f875 feat(frontends/lean): add command for customizing the behavior of proof-qed blocks: we can automatically register tactics to be automatically applied before each component 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-07-02 20:45:10 -07:00
Leonardo de Moura
5527955ba8 feat(frontends/lean): add 'proof-qed' notation 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-07-02 19:30:48 -07:00
Leonardo de Moura
60c637fb9d feat(library/tactic): add 'exact' tactic 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-07-02 18:37:32 -07:00
Leonardo de Moura
37b5b7c4c2 feat(library/tactic): rename 'exact' to 'assumption', 'exact' is a different tactic 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-07-02 18:10:42 -07:00
Leonardo de Moura
ee531ec0e2 feat(frontends/parser): improve error message when an apply tactic refers a local constant that is not marked as [fact] 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-07-02 14:09:01 -07:00
Leonardo de Moura
0f27856e4a feat(library/tactic): new apply tactic 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-07-02 13:14:50 -07:00
Leonardo de Moura
6ab46396d8 feat(library/tactic): expose 'trace' tactic 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-07-02 10:52:45 -07:00
Leonardo de Moura
e1d909455c refactor(library/tactic): add namespace 'tactic', improve expr_to_tactic failure error message 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-07-02 10:45:09 -07:00