Commit graph

820 commits

Author SHA1 Message Date
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
320bc55e85 fix(frontends/lean/elaborator): use preprocessed expression when displaying errors
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2014-07-29 14:25:50 -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
5f360cd8ec feat(kernel/error_msgs): improve application type mismatch error messages
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2014-07-28 07:08:12 -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
0cdd4a267c feat(frontends/lean/pp): pretty print 'show' expressions
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2014-07-26 21:56:35 -07:00
Leonardo de Moura
60cc9ac8e2 feat(frontends/lean/pp): pretty print 'have' expressions
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2014-07-26 21:35:26 -07:00
Leonardo de Moura
cf35c07786 fix(frontends/lean): fix 'let' annotation placement and pretty printer
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2014-07-26 21:00:22 -07:00
Leonardo de Moura
206206060f test(tests/lean/hott): add some of Vladimir's definitions as tests
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2014-07-26 20:50:37 -07:00
Leonardo de Moura
70ef92cd5e feat(build): add tests/lean/slow test directory, and add nat_wo_hints.lean file that elaborates nat.lean without using any hint
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2014-07-26 10:53:44 -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
709b5ce90f fix(kernel/justification): duplicate position
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2014-07-25 21:16:49 -07:00
Leonardo de Moura
70c887a0bd fix(library/unifier): fix cryptic error message
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2014-07-25 21:10:32 -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
a59eec39b8 feat(frontends/lean): improve 'type mismatch' error position, and annotate 'have'-expressions
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2014-07-25 09:44:40 -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
6000270d35 chore(tests/lean): reactivate config.lean
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2014-07-10 23:32:23 +01:00
Leonardo de Moura
e9c17b154c fix(tests/lean): define LEAN_PATH in tests scripts
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2014-07-10 23:26:55 +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
49bc3fffbd fix(frontends/lean/pp): purify procedure for local names
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2014-07-10 14:13:51 +01:00
Leonardo de Moura
fc8ddcb0ce feat(frontends/lean): improve 'check' command when used inside sections
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2014-07-10 14:07:41 +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
2ef7b9be2f feat(frontends/lean): add basic pretty printer
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2014-07-09 01:12:36 -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
6ceecf6a15 feat(library/aliases): remove duplicates from aliasing tables
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2014-07-07 12:59:57 -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
Leonardo de Moura
a66a08c89e feat(frontends/lean): parse strings as expressions of type 'string.string'
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2014-07-02 10:00:55 -07:00
Leonardo de Moura
0198dfc7c5 feat(frontends/lean): parse numerals as expressions of type 'num.num'
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2014-07-02 08:09:33 -07:00
Leonardo de Moura
7593ee1468 refactor(library/standard): remove parameter from 'tactic' inductive type
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2014-07-02 08:09:24 -07:00
Leonardo de Moura
b2b76b078f feat(frontends/lean): remove build_tactic_cmds, and use expressions for representing tactics
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2014-07-01 20:43:53 -07:00
Leonardo de Moura
5b69f88664 feat(frontends/lean/notation_cmd): make the notation for setting precedence uniform
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2014-07-01 16:55:41 -07:00
Leonardo de Moura
8d584e54da feat(frontends/lean): add exact_apply
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2014-06-30 00:51:11 -07:00
Leonardo de Moura
33cb9382aa feat(frontends/lean): add beta-reduction tactic command
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2014-06-29 19:41:54 -07:00
Leonardo de Moura
360e9b9486 feat(library/tactic): add apply tactic
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2014-06-29 18:33:53 -07:00
Leonardo de Moura
6645fdeae0 feat(frontends/lean): add repeat tactic command, refactor tactic sequence notation
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2014-06-29 12:24:13 -07:00
Leonardo de Moura
2510d5722a feat(frontends/lean): add unfold tactic command
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2014-06-29 12:05:45 -07:00
Leonardo de Moura
6d09d82a7c feat(frontends/lean): add notation for orelse tactic, add show and now tactics
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2014-06-29 11:39:18 -07:00
Leonardo de Moura
a1bbb09de4 feat(frontends/lean): add notation for then tactic
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2014-06-29 11:24:56 -07:00
Leonardo de Moura
ffa175009b feat(frontends/lean): use tactics for solving unassigned metavariables
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2014-06-29 09:50:16 -07:00
Leonardo de Moura
1e39a21823 feat(frontends/lean): add basic tactics
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2014-06-29 09:03:51 -07:00
Leonardo de Moura
7d5522e36a chore(tests): add missing tests
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2014-06-29 09:03:51 -07:00
Leonardo de Moura
f5f3816596 chore(tests): cleanup test scripts
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2014-06-29 09:03:39 -07:00
Leonardo de Moura
cf28981f45 feat(tests/lean/run): add test_single script that sets the LEAN_PATH
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2014-06-29 07:47:46 -07:00
Leonardo de Moura
193ce35419 refactor(frontends/lean/inductive_cmd): redesign inductive datatype elaboration, use the new elaborator, and use simpler algorithm to infer the resulting universe
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2014-06-28 15:33:56 -07:00
Leonardo de Moura
0adacb5191 feat(kernel): add infer implicit, and use it to infer implicit arguments of inductive datatype eliminators, and tag whether parameters should be implicit or not in introduction rules in the module inductive_cmd
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2014-06-28 13:57:36 -07:00
Leonardo de Moura
47ff300d1a fix(frontends/lean): '@' explicit mark
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2014-06-28 07:30:36 -07:00
Leonardo de Moura
ccce9d90a4 feat(frontends/lean/elaborator): add 'delayed coercions', add example demonstrating why the new feature is useful
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2014-06-26 18:39:23 -07:00
Leonardo de Moura
340dc622c6 fix(kernel/formatter): make sure simple formatter output is not sensitive to internal names
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2014-06-26 14:58:59 -07:00
Leonardo de Moura
150d285b39 fix (library/unifier): occurs_context_check
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2014-06-26 14:45:36 -07:00
Leonardo de Moura
16bdc51fc4 refactor(kernel/type_checker): simplify type checker API, and remove add_cnstr_fn
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2014-06-26 13:36:31 -07:00
Leonardo de Moura
a70f8dd98e feat(kernel/inductive): mark parameters, type formers and indices as implicit parameters in the elimination rule
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2014-06-26 11:05:14 -07:00
Leonardo de Moura
5e0e737213 feat(library/scoped_ext): do not import 'children' namespace objects
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2014-06-26 10:32:34 -07:00
Leonardo de Moura
a7623845f9 test(tests/lean/run): add another example on how to deal with ambiguity
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2014-06-26 10:18:35 -07:00
Leonardo de Moura
930960c54d fix(frontends/lean/builtin_cmds): abstract section parameters in the 'check' command
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2014-06-26 10:06:50 -07:00
Leonardo de Moura
cc21bfd01d test(tests/lean/run): more tests on how to deal with ambiguity
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2014-06-26 09:32:26 -07:00
Leonardo de Moura
dc5553ea5c test(tests/lean/run): add test demonstrating how to control ambiguity
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2014-06-26 09:32:19 -07:00
Leonardo de Moura
da6e92787a test(tests/lean/run): add simple overloading test
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2014-06-26 09:32:12 -07:00
Leonardo de Moura
acf8c13619 feat(kernel): add strict implicit arguments
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2014-06-25 17:50:49 -07:00
Leonardo de Moura
4bc1f3cf81 test(lean/run): add elaborator tests
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2014-06-25 16:15:01 -07:00
Leonardo de Moura
49a6048060 test(lean/run): add another test for new elaborator
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2014-06-25 13:18:32 -07:00
Leonardo de Moura
3e7dfa6212 fix(frontends/lean): infer type of definitions
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2014-06-25 08:39:14 -07:00
Leonardo de Moura
d055c4880f feat(frontends/lean): connect new elaborator to frontend
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2014-06-25 08:31:00 -07:00
Leonardo de Moura
603dafbaf7 refactor(kernel): remove 'let'-expressions
We simulate it in the following way:
1- An opaque 'let'-expressions (let x : t := v in b) is encoded as
      ((fun (x : t), b) v)
   We also use a macro (let-macro) to mark this pattern.
   Thus, the pretty-printer knows how to display it correctly.

2- Transparent 'let'-expressions are eagerly expanded by the parser.

Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2014-06-24 16:27:27 -07:00
Leonardo de Moura
aa8b5655dd feat(frontends/lean): add notation overwrite
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2014-06-23 16:10:36 -07:00
Leonardo de Moura
5bd86754af feat(frontends/lean/builtin_cmds): change notation for marking implicit/cast parameter in sections
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2014-06-22 17:51:00 -07:00
Leonardo de Moura
2589d60bfd feat(frontends/lean): add nameless 'have' expression
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2014-06-20 17:18:18 -07:00
Leonardo de Moura
4b227409bf feat(frontends/lean): add 'then have' expression
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2014-06-20 14:27:21 -07:00
Leonardo de Moura
4560413a92 feat(frontends/lean): add '[fact]' modifier for 'have' expression
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2014-06-20 11:58:05 -07:00
Leonardo de Moura
39177ec10a feat(frontends/lean): flip definition modifiers position, now they must occur after the identifier
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2014-06-20 11:58:05 -07:00
Leonardo de Moura
bdab979e09 feat(frontends/lean): add inductive_cmd
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2014-06-18 16:00:59 -07:00
Leonardo de Moura
3bb53810c5 test(lean/run): add notation test
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2014-06-18 09:48:47 -07:00
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
813e033f54 test(lean): add simple example of notation implemented using Lua
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2014-06-17 22:37:22 -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
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
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
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
873a5c8605 test(lean): add 'let' expression test
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2014-06-16 14:11:26 -07:00
Leonardo de Moura
21c54755a9 fix(kernel/converter): bug in is_def_eq
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2014-06-16 14:09:12 -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
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
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
fad4780d72 test(lean/run): add overload test
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2014-06-13 18:06:44 -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
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
cffbae3667 test(tests/lean/run): add new test group, where we just execute Lean (and don't check output)
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2014-06-11 21:07:23 -07:00
Leonardo de Moura
05edbe00ad chore(shell): re-activate .lean tests
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2014-06-11 14:36:42 -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
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
3a0861bca7 test(lean): remove old test
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2014-05-17 10:42:10 -07:00
Leonardo de Moura
9f06cd553e test(lean): remove tests using Lean old syntax and kernel
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2014-05-17 10:38:53 -07:00
Leonardo de Moura
e9dada5e14 refactor(builtin/kernel): use standard definition for 'or' and 'and'
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2014-02-17 12:05:34 -08:00
Leonardo de Moura
1739b5c153 fix(kernel/type_checker): caching bug
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2014-02-12 10:43:01 -08:00
Leonardo de Moura
368fcb5ff9 refactor(builtin/kernel): rename refute to by_contradiction
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2014-02-12 08:49:19 -08:00
Leonardo de Moura
b7b868de85 fix(library/elaborator): bug reported by Jeremy Avigad
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2014-02-10 14:01:22 -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
4317f67bd2 fix(builtin/tactic): more meaningful error message when skip tactic is used in a full proof
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2014-02-09 18:57:33 -08:00
Leonardo de Moura
c45c1748d8 refactor(builtin/kernel): reorder congr1 arguments
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2014-02-09 16:15:44 -08:00
Leonardo de Moura
8df7c7b02d feat(kernel/type_checker): remove fallback that expands opaque definitions in the type checker
We should not rely on this feature. It can be quite expensive.
We invoke is_convertible in several places, in particular, if we are using overloading. For example, the frontend uses is_convertible to check which overload should be used. Thus, it will make several calls such as

   is_convertible(num, Nat)

If is_convertible starts unfolding opaque definitions, we would keep expanding num.

Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2014-02-09 11:31:24 -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
d4b08fcf96 feat(library/elaborator): be 'lazy' when normalizing terms in the elaborator
Unification constraints of the form

         ctx |- ?m[inst:i v] == T

         and

         ctx |- (?m a1 ... an) == T

are delayed by elaborator because the produce case-splits.
On the other hand, the step that puts terms is head-normal form is eagerly applied.
This is a bad idea for constraints like the two above. The elaborator will put T in head normal form
before executing process_meta_app and process_meta_inst. This is just wasted work, and creates
fully unfolded terms for solvers and provers.

The new test demonstrates the problem. In this test, we mark several terms as non-opaque.
Without this commit, the produced goal is a huge term.

Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2014-02-06 21:08:00 -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
363c4dc5c2 feat(library/elaborator): improve support for dependent pairs in the elaborator
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2014-02-06 20:56:31 -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
e4579b93e4 fix(library/elaborator): try first projection before imitation in the higher-order unifier
Projections build more general solutions. This commit also adds a test that demonstrates the issue. Before this commit, the elaborator would produce the "constant" predicate (fun x, a + b = b + a).

Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2014-02-06 13:35:05 -08:00
Leonardo de Moura
ef321e730f feat(builtin/tactic): add the 'skip' (bogus) tactic for ignoring a proof hole in a big proof
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2014-02-06 12:47:23 -08:00
Leonardo de Moura
eab0456b27 test(tests/lean): test super opaque style
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2014-02-06 11:33:27 -08:00
Leonardo de Moura
fdc4c9b53c test(tests/lean): add nested 'have' expression test
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2014-02-06 08:13:04 -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
419fb7464e fix(tests/lean): adjust tests to reflect recent changes
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2014-02-05 21:04:06 -08:00
Leonardo de Moura
aec9c84d0d fix(util/lua): deadlock
Errors in the Lua library produce longjmps.
The longjmp will not unwind the C++ stack.
In the new test, the lock was not being released, and the system was deadlocking in the next call that tried to lock the environment

Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2014-02-04 15:16:29 -08:00
Leonardo de Moura
f4ec874c6e refactor(builtin): remove dead module heq
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2014-02-04 14:42:28 -08:00
Leonardo de Moura
0283887ee9 refactor(builtin/kernel): move the heq axioms into kernel.lean
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2014-02-04 14:17:34 -08:00
Leonardo de Moura
f03c09c10b feat(library/elaborator): add support for proj/pair/sigma in the the higher-order unification procedure
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2014-02-04 13:53:30 -08:00
Leonardo de Moura
413391b2b4 chore(tests/lean/sig2): remove unnecessary parenthesis from test
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2014-02-04 11:37:08 -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
96c9c7505a test(tests/lean): add another sigma-type test
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2014-02-04 10:12:39 -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
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
640ebcc040 test(tests/lean/exp): add example for Steve
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2014-02-03 11:35:40 -08:00
Leonardo de Moura
e4afa3dc43 fix(tests/lean/map): incorrect output
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2014-02-03 00:05:19 -08:00
Leonardo de Moura
87f9c9b27e fix(tests/lean/map): make sure the unit test produce the same result in different platforms
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2014-02-02 20:29:34 -08:00
Leonardo de Moura
e2add5c9f2 test(tests/lean): add heterogeneous equality simplification example
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2014-02-02 20:27:39 -08:00
Leonardo de Moura
6be50f0133 refactor(builtin/heq): merge cast and heq modules
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2014-02-02 15:01:48 -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
2b7bc7b673 test(tests/lean/exp): simulating HOL constructions
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2014-01-31 17:59:57 -08:00
Leonardo de Moura
e3dc552c39 fix(library/simplifier): nontermination
The example tests/lua/simp1.lua demonstrates the issue.
The higher-order matcher matches closed terms that are definitionally equal.
So, given a definition

    definition a := 1

it will match 'a' with '1' since they are definitionally equal.

Then, if we have a theorem

    theorem a_eq_1 : a = 1

as a rewrite rule, it was triggering the following infinite loop when simplifying the expression "a"

   a --> 1 --> 1 --> 1 ...

The first simplification is expected. The other ones are not.
The problem is that "1" is definitionally equal to "a", and they match.
The rewrite_rule_set manager accepts the rule a --> 1 since the left-hand-side does not occur in the right-hand-side.

To avoid this loop, we test if the new expression is not equal to the previous one.

Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2014-01-31 15:55:21 -08:00
Leonardo de Moura
1d85267d26 fix(library/simplifier): assumptions/context may contain equations where the left-hand-side is a metavariable or semantic attachment
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2014-01-31 15:38:22 -08:00
Leonardo de Moura
110ca84984 feat(library/simplifier): allow the user to associate a simplifier monitor with the lua_State object
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2014-01-31 13:49:24 -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
8c1f6b9055 fix(kernel/typechecker): allow elaborator to infer (Type U+1)
In the new test elab8.lean, the parameter B is in (Type U+1).
Before, this commit, the type checker was forcing all metavariables that must be types to be <= (Type U). This restriction was preventing the elaborator from succeeding in reasonable cases.

Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2014-01-30 14:00:01 -08:00
Leonardo de Moura
41f5e2a067 feat(library/simplifier): statically check (conditional) equations (aka rewrite rules) to verify whether we can skip type checking when using them in the simplifier
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2014-01-29 18:32:40 -08:00
Leonardo de Moura
01259b1e84 feat(kernel): make sure U is the maximal universe
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2014-01-29 16:31:00 -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
4f3127d3d5 fix(library/simplifier): check if the given types are convertible to ceq expected types
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2014-01-29 15:15:55 -08:00
Leonardo de Moura
0bb8fe75b3 test(tests/lean): new simplifier test
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2014-01-29 14:21:18 -08:00
Leonardo de Moura
a19f9d4846 feat(library/simplifier): discard conditional equations that are clearly non-terminating
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2014-01-29 13:56:45 -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
069e5edf6b fix(library/simplifier): include flag indicating if the proof generated by simplifier is a homogenous or heterogenous equality, use flag to fix bug in the simp_tactic
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2014-01-29 12:01:01 -08:00
Leonardo de Moura
62408a6adc test(tests/lean): move simp_loop test to slow subdirectory
This example produces a stackoverflow on Valgrind.
We don't execute Valgrind on tests in the slow subdirectory.

Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2014-01-29 10:32:48 -08:00
Leonardo de Moura
ee4344076e feat(library/simplifier): improve error message when simplifier is looping
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2014-01-28 19:36:31 -08:00
Leonardo de Moura
72c607846a test(tests/lean): add Jeremy's proof to test suite
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2014-01-28 16:05:46 -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
b31ef34787 feat(library/simplifier): preserve binder names when applying higher-order rewrite rules
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2014-01-28 00:50:27 -08:00
Leonardo de Moura
6da1b447f0 fix(library/hop_match): do not match iff with =
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2014-01-28 00:21:05 -08:00
Leonardo de Moura
db45d02078 fix(tests/lean): test discrepancy on OSX
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2014-01-27 23:31:35 -08:00
Leonardo de Moura
7b88d68afb test(tests/lean): add test using simplifier monitor for tracking failures
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2014-01-27 15:11:16 -08:00
Leonardo de Moura
8bccfb947a feat(library/simplifier): expose simplier and simplifier_monitor objects in the Lua API
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2014-01-27 15:02:05 -08:00
Leonardo de Moura
b26035fcf6 feat(kernel/type_checker): improve application type mismatch error messages
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2014-01-27 09:45:17 -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
844572c382 feat(library/simplifier): support for dependent simplification in Pi/forall expressions
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2014-01-26 00:32:05 -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
Leonardo de Moura
9fb3ccb4c0 feat(library/simplifier): support for dependent simplification in lambda expressions
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2014-01-25 16:54:42 -08:00
Leonardo de Moura
5b13ef1b90 test(tests/lean): new simplifier test
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2014-01-25 10:56:49 -08:00
Leonardo de Moura
7015089734 fix(library/simplifier): move to locally nameless approach in the simplifier. Contextual simplification may add rewriting rules with free variables, and it is a mess to manage them when using de Bruijn indices
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2014-01-25 10:49:44 -08:00
Leonardo de Moura
7a4eb4b8ed feat(library/simplifier): contextual simplification for A -> B
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2014-01-24 22:32:55 -08:00
Leonardo de Moura
c2381e43f1 fix(library/simplifier): bug in cast elimination
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2014-01-24 21:25:09 -08:00
Leonardo de Moura
35ad156a46 fix(tests/lean): make sure pretty print and parse test passes
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2014-01-24 17:23:55 -08:00
Leonardo de Moura
8f455f5965 fix(frontends/lean): bug in scope construct
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2014-01-24 17:23:29 -08:00
Leonardo de Moura
7f3e2b3ef4 fix(frontends/lean/parser): bug in 'using' construct
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2014-01-24 17:09:46 -08:00
Leonardo de Moura
8e0888828d fix(library/simplifier): missing check in mk_hcongr_th
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2014-01-24 17:09:46 -08:00
Leonardo de Moura
1a3660180e test(tests/lean): add new simplifier test
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2014-01-24 17:09:46 -08:00
Leonardo de Moura
26bea77721 fix(library/simplifier): bug in heterogeneous equality support, and universe commutativity support in the simplifier
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2014-01-24 17:09:46 -08:00
Leonardo de Moura
dbc100cc2e feat(library/simplifier): cast elimination in the simplifier
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2014-01-23 17:28:14 -08:00
Leonardo de Moura
cd87cb3de4 test(tests/lean): add test for congruence theorem that uses an argument before simplification
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2014-01-23 13:26:09 -08:00
Leonardo de Moura
180be5c4a2 feat(library/simplifier): improve contextual simplifications
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2014-01-23 13:11:58 -08:00
Leonardo de Moura
5ba2525eab test(tests/lean): add test disabling contextual simplifications
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2014-01-23 12:57:05 -08:00
Leonardo de Moura
33193e1ab3 feat(library/simplifier): improve contextual simplifications
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2014-01-23 12:54:29 -08:00
Leonardo de Moura
d6692264e8 feat(library/simplifier): contextual simplifications
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2014-01-23 12:23:22 -08:00
Leonardo de Moura
1638a7bb02 fix(frontends/lean/pp): compute local shared nodes, and avoid unnecessary let's
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2014-01-22 21:44:24 -08:00
Leonardo de Moura
17cce340f6 fix(library/elaborator): in optimization for metavariable free terms
The optimization was incorrect if the term indirectly contained a metavariable.
It could happen if the term contained a free variable that was assigned in the context to a term containing a metavariable.

This commit also adds a new test that exposes the problem.

Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2014-01-22 18:06:00 -08:00
Leonardo de Moura
8214c7add4 feat(library/elaborator): compensate the lack of eta-reduction (and eta-expanded normal forms) in the kernel normalizer
Before this commit, the elaborator was solving constraints of the form

       ctx |- (?m x) == (f x)
as
       ?m <- (fun x : A, f x)    where A is the domain of f.

In our kernel, the terms f and (fun x, f x) are not definitionally equal.
So, the solution above is not the only one. Another possible solution is

       ?m  <- f

Depending of the circumstances we want  ?m <- (fun x : A, f x) OR ?m <- f.
For example, when Lean is elaborating the eta-theorem in kernel.lean, the first solution should be used:
       ?m <- (fun x : A, f x)

When we are elaborating the axiom_of_choice theorem, we need to use the second one:
       ?m <- f

Of course, we can always provide the parameters explicitly and bypass the elaborator.
However, this goes against the idea that the elaborator can do mechanical steps for us.

This commit addresses this issue by creating a case-split
       ?m <- (fun x : A, f x)
       OR
       ?m <- f

Another solution is to implement eta-expanded normal forms in the Kernel.

With this change, we were able to cleanup the following "hacks" in kernel.lean:
     @eps_ax A (nonempty_ex_intro H) P w Hw
     @axiom_of_choice A B P H
where we had to explicitly provided the implicit arguments

This commit also improves the imitation step for Pi-terms that are actually arrows.

Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2014-01-22 13:28:54 -08:00
Leonardo de Moura
331b5846c6 test(library/simplifier): add test for the single_pass option in the simplifier
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2014-01-21 13:47:54 -08:00
Leonardo de Moura
ead54bbf57 feat(library/simplifier): enforce max_steps option
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2014-01-21 12:12:17 -08:00
Leonardo de Moura
1ccfac5873 feat(library/simplifier): conditional rewriting
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2014-01-20 21:15:46 -08:00
Leonardo de Moura
cd19d4da01 feat(library/simplifier): memoize intermediate results
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2014-01-20 17:03:44 -08:00
Leonardo de Moura
97ead50a3e feat(builtin/Nat): flip orientation of associativity axioms for + and *
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2014-01-20 15:38:00 -08:00
Leonardo de Moura
d1bd56b3d3 fix(tests/lean): adjust test to reflect recent changes
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2014-01-20 14:47:03 -08:00
Leonardo de Moura
ad219d43d9 refactor(*): semantic attachment parsing and simplification
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2014-01-20 14:44:45 -08:00
Leonardo de Moura
5224df56a3 test(tests/lean): add example showing how to 'sort' argumentes of AC operators using the simplifier
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2014-01-20 08:36:48 -08:00
Leonardo de Moura
913d893204 feat(library/simplifier): add support for 'permutation' rewrite rules
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2014-01-20 08:29:31 -08:00
Leonardo de Moura
69d7ee316f feat(library/simplifier): improve simplification by evaluation
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2014-01-19 23:26:34 -08:00
Leonardo de Moura
bcede6925f fix(tests/lean): add expected result file
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2014-01-19 16:31:35 -08:00
Leonardo de Moura
19f3c281c3 test(tests/lean): matrix multiplication example
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2014-01-19 16:29:32 -08:00
Leonardo de Moura
999984e701 fix(tests/lean): remove unnecessary theorems
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2014-01-19 12:55:33 -08:00
Leonardo de Moura
cc11b9e125 test(tests/lean): rewriting proof example
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2014-01-19 12:53:21 -08:00
Leonardo de Moura
d322f63113 feat(frontends/lea): add commands for creating and managing rewrite rule sets
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2014-01-19 12:03:59 -08:00
Leonardo de Moura
7a3aab60c6 chore(builtin/kernel): remove \bowtie as notation for transitivity
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2014-01-18 21:11:12 -08:00
Leonardo de Moura
feea96e84d feat(library/simplifier): add rewrite_rule_set extension for managing rewrite rules in an environment
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2014-01-18 15:43:24 -08:00
Leonardo de Moura
40b7ed13c2 fix(tests/lean): adjust tests
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2014-01-17 19:27:32 -08:00
Leonardo de Moura
fc4c6454a7 chore(tests/lean): adjust tests to reflect recent changes
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2014-01-17 14:36:55 -08:00
Leonardo de Moura
a43020b31b refactor(kernel): remove heterogeneous equality
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2014-01-16 17:39:12 -08:00
Leonardo de Moura
57e58c598c fix(tests/lean): adjust tests to reflect recent changes
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2014-01-15 16:35:33 -08:00