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Author SHA1 Message Date
Leonardo de Moura
637eae40ad feat(library/aliases): add support for alias overloading 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-06-10 10:05:51 -07:00
Leonardo de Moura
439b6c1e96 feat(frontends/lean/parse_table): add parse_table Lua API 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-06-09 15:33:39 -07:00
Leonardo de Moura
1c49b4d85f chore(*): replace unique_lock with lock_guard when we do not need to use conditional variables 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-06-07 20:55:25 -07:00
Leonardo de Moura
7124866a4f fix(library/module): potential deadlock when child thread threw an exception 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-06-07 20:34:18 -07:00
Leonardo de Moura
15f0899efb refactor(*): replace LEAN_THREAD_LOCAL with MK_THREAD_LOCAL_GET, the new macro uses the Boost thread_local_ptr instead of 'thread_local' directive 
Motivation: clang++ on OSX does not support 'thread_local'.

Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-06-07 10:18:36 -07:00
Leonardo de Moura
c1796d0ce4 chore(*): remove dead code 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-06-06 10:35:17 -07:00
Leonardo de Moura
4cf1b05831 refactor(library/token_set): move to frontends/lean 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-06-05 13:10:50 -07:00
Leonardo de Moura
70c3ae8692 feat(library/token_set): register builtin commands 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-06-05 13:05:40 -07:00
Leonardo de Moura
5b898aa3ed refactor(util/trie): modify interface to avoid the creation of many temporary optional values and inc/dec reference counters 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-06-05 12:40:51 -07:00
Leonardo de Moura
220f94d36e feat(library/kernel_bindings): expose instantiate_levels 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-06-04 16:26:26 -07:00
Leonardo de Moura
1c96373c1a feat(library/kernel_bindings): expose replace_fn in the Lua API 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-06-04 15:26:55 -07:00
Leonardo de Moura
4a25e7442a feat(kernel/expr): add optional expression caching (aka "partial" hash-consing) 
We do not enforce full hash-consing because we would need to synchronize
the access to the hashtable/cache.

Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-06-03 15:35:47 -07:00
Leonardo de Moura
45a3ab5141 refactor(library/aliases): it is bad design to instantiate parameter using the parameter name, the parameter names have no semantic value 
Moreover, we could create type incorrect aliases by "accident".

Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-06-03 15:20:14 -07:00
Leonardo de Moura
1f6cfce05c refactor(library/placeholder): use different names for different placeholders, it is bad design to assume that two structurally identical expressions are different when they are allocated twice (this design is not compatible with any form of hash-consing 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-06-03 14:59:00 -07:00
Leonardo de Moura
076414693a feat(library/kernel_bindings): improve argument validation in the Lua API 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-06-03 10:17:12 -07:00
Leonardo de Moura
7dba2c29d2 feat(library): add token set 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-06-03 02:34:12 -07:00
Leonardo de Moura
ab5f570924 refactor(kernel/constraint): remove choice constraints from the kernel, the kernel does not use them, we will implement them in elaborator 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-06-03 00:46:28 -07:00
Leonardo de Moura
045fa911d1 fix(library/kernel_bindings): missing kind in lean_kind 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-06-02 18:12:02 -07:00
Leonardo de Moura
ab7469c175 fix(library/scope): warning message, and old comment 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-06-02 18:08:46 -07:00
Leonardo de Moura
1467bb256e chore(library): remove unnecessary code 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-06-02 16:22:38 -07:00
Leonardo de Moura
33bbcd9526 chore(kernel/declaration): rename declaration::get_params to declaration::get_univ_params 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-06-02 16:20:34 -07:00
Leonardo de Moura
82e1f87e08 feat(kernel): add function param_names_to_levels 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-06-02 16:17:04 -07:00
Leonardo de Moura
712c10f818 fix(library/scope): make sure the local universe names do not conflict with universe parameter names when close a section, add declaration parameter name sanitizers 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-06-02 15:39:57 -07:00
Leonardo de Moura
f82658f213 feat(library): add helper functions for 'updating' declarations 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-06-02 15:13:38 -07:00
Leonardo de Moura
dcacf6fbca refactor(util): rename name_map to name_hash_map 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-06-02 14:34:22 -07:00
Leonardo de Moura
b6d2328c1d fix(library/scope): make sure local levels are added in the beginning of the universe parameter list 
The idea is to make sure it is consistent with the behavior used for regular local parameters.

Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-06-02 14:06:31 -07:00
Leonardo de Moura
9b6b162a7c fix(library/scope): bug when abstracting inductive declaration in the end of a section 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-06-02 13:46:16 -07:00
Leonardo de Moura
6ee272477a fix(library/private): bug when preserving private names at end_section 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-06-02 11:32:14 -07:00
Leonardo de Moura
936ca80b9b fix(library/scope): bug in add_definition 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-06-02 11:04:34 -07:00
Leonardo de Moura
e56307f006 fix(library/scope): bug in end_scope procedure 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-06-02 10:43:28 -07:00
Leonardo de Moura
6e113206b6 feat(library/scope): add support for inductive datatypes in sections 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-06-02 10:28:07 -07:00
Leonardo de Moura
d36ef5dcbe feat(library/private): preserve 'hidden/private name => user name' map when section is closed 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-06-01 18:09:11 -07:00
Leonardo de Moura
585f3adde1 feat(library/scope): add sections 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-06-01 17:55:11 -07:00
Leonardo de Moura
286d7f0e64 feat(library): add namespace management 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-05-31 15:41:01 -07:00
Leonardo de Moura
3145cee51f refactor(library/aliases): move replace_prefix to util/name 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-05-31 15:11:22 -07:00
Leonardo de Moura
f7b3061a66 feat(library/module): improve 'import module' error messages 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-05-31 12:52:06 -07:00
Leonardo de Moura
75abcea83f fix(library/kernel_bindings): Lua API consistency, environment:add method also register declaration in the export table 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-05-31 12:20:57 -07:00
Leonardo de Moura
7bd10c2d2d feat(library/module): export global universe level declarations 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-05-31 12:12:41 -07:00
Leonardo de Moura
1b5366cfb7 feat(library): add module for implementing aliases and 'using' command 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-05-30 21:42:40 -07:00
Leonardo de Moura
6902d8cb05 feat(library): add simple placeholder module 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-05-30 20:28:28 -07:00
Leonardo de Moura
72f9e26dab refactor(library/private): add hidden_to_user_name and user_to_hidden_name functions 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-05-30 17:52:01 -07:00
Leonardo de Moura
128d668f03 feat(library): add support for creating 'private/hidden' names 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-05-29 18:37:09 -07:00
Leonardo de Moura
13f9db26b7 refactor(library): add module namespace 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-05-29 13:58:47 -07:00
Leonardo de Moura
fc7d5461b1 feat(library/kernel_bindings): add to_io_state_ext helper function 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-05-29 13:35:11 -07:00
Leonardo de Moura
f8e71f711f feat(library/expr_lt): add expr_quick_cmp functional object 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-05-29 13:34:16 -07:00
Leonardo de Moura
bfa9b90af0 feat(library/kernel_bindings): used 'named' parameters in import_modules API 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-05-29 11:03:44 -07:00
Leonardo de Moura
ade5d99023 feat(library/modules): add option for discarding the proof of imported theorems (after checking them) 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-05-29 10:56:28 -07:00
Leonardo de Moura
28b9d17a14 perf(library/module): do not use multiple threads when skipping type checking, add flag to disable/enable type checking theorems asynchronously 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-05-28 10:04:42 -07:00
Leonardo de Moura
e206fcc1af perf(kernel/type_checker): reduce the overhead of creating delayed_justification objects, a huge number of them is created when type checking applications 
We reduce the cost by avoiding the allocation of std::functional objects, and the unnecessary increment/decrement of reference counters.

Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-05-27 23:16:52 -07:00
Leonardo de Moura
6129cccc66 perf(library/shared_environment): replace shared_mutex with simple mutex, the shared_mutex is just overhead and impacts negatively on performance tests 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-05-27 08:34:44 -07:00
Leonardo de Moura
75117bede8 fix(library/kernel_bindings): use standard environment in import_modules 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-05-26 15:54:08 -07:00
Leonardo de Moura
eca906b074 feat(library/module): add inductive decls to .olean files 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-05-26 15:38:09 -07:00
Leonardo de Moura
49e1f78a33 feat(library/kernel_serializer): add serializer/deserializer for inductive decls 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-05-26 15:37:53 -07:00
Leonardo de Moura
2d31c6c0b2 feat(library/coercion): improve get_user_coercions API 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-05-25 11:35:47 -07:00
Leonardo de Moura
e058839d24 fix(library/coercion): allow cycles in the coercion graph 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-05-25 11:08:49 -07:00
Leonardo de Moura
71b555ab15 test(lua): coercion module error messages 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-05-25 10:01:04 -07:00
Leonardo de Moura
ef14c3d67e fix(library/coercion): coercion replacement 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-05-25 09:49:26 -07:00
Leonardo de Moura
eb6d72a20c fix(library/coercion): typo 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-05-25 08:55:20 -07:00
Leonardo de Moura
fc1819aadd test(lua): coercion serialization 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-05-25 08:38:50 -07:00
Leonardo de Moura
f598c6a110 fix(library/coercion): bug in coercion to function-class 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-05-25 08:21:53 -07:00
Leonardo de Moura
118eae2733 fix(library/coercion): bug add_coercion 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-05-25 07:45:49 -07:00
Leonardo de Moura
e9e61fec51 feat(library/coercion): add for_each_coercion procedure 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-05-25 07:45:49 -07:00
Leonardo de Moura
a408883c92 fix(library/coercion): bug in de-Bruijn indices 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-05-25 07:45:49 -07:00
Leonardo de Moura
1ee6bb48fc fix(library/coercion): bug in add_coercion_trans 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-05-25 06:25:31 -07:00
Leonardo de Moura
6536232107 feat(library/coercion): expose coercion module in the Lua API 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-05-25 06:05:31 -07:00
Leonardo de Moura
2be9bcef78 feat(library/coercion): add coercion management implementation 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-05-24 19:28:42 -07:00
Leonardo de Moura
1cff37a084 feat(library/module): use io_state to report warning messages 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-05-24 14:08:15 -07:00
Leonardo de Moura
5df2331159 feat(library/io_state): add constructor for copying io_state, but replacing channels 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-05-24 13:51:39 -07:00
Leonardo de Moura
f8255ddac6 fix(library/module): deadlock 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-05-23 16:46:53 -07:00
Leonardo de Moura
d30c600eb2 fix(library/module): bug in module import 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-05-23 16:23:47 -07:00
Leonardo de Moura
879572ee7e fix(kernel/module): non-termination 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-05-23 15:12:47 -07:00
Leonardo de Moura
902b6160fa fix(kernel/module): deadlock 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-05-23 14:43:03 -07:00
Leonardo de Moura
a3b0200d32 feat(library/module): do not use threads when lean is not compiled with LEAN_MULTI_THREAD 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-05-23 11:32:24 -07:00
Leonardo de Moura
be96dc2ddf fix(library/module): bug in next_task method 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-05-23 11:13:38 -07:00
Leonardo de Moura
c593247fcc fix(library/kernel_serializer): bug in declaration serialization 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-05-23 11:11:16 -07:00
Leonardo de Moura
61b662151e fix(library/module): bug in export_module procedure 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-05-23 10:57:11 -07:00
Leonardo de Moura
6bbb9d3667 feat(library/kernel_bindings): declarations added with the function add_decl are automatically registered in the to-export list 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-05-23 10:52:47 -07:00
Leonardo de Moura
1a663afda4 feat(library/module): add extra function for adding uncertified declarations when trust_lvl > LEAN_BELIEVER_TRUST_LEVEL 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-05-23 10:50:34 -07:00
Leonardo de Moura
a0a70bcea7 feat(library/kernel_bindings): expose import/export functions in the Lua API 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-05-23 09:35:32 -07:00
Leonardo de Moura
21905289fa feat(library/module): add module import procedure 
The modules are processed in parallel.

Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-05-22 18:15:44 -07:00
Leonardo de Moura
76177d7765 feat(library/kernel_bindings): improve type_checker:check Lua API 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-05-22 14:10:25 -07:00
Leonardo de Moura
e39feabb72 feat(library/module): add declaration reader 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-05-21 11:54:29 -07:00
Leonardo de Moura
9f4bae6856 feat(library/kernel_bindings): add hott_environment Lua API 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-05-21 11:49:30 -07:00
Leonardo de Moura
4d1fecb21d refactor(library/kernel_bindings): rename empty_environment ==> bare_environment in the Lua API 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-05-21 11:24:24 -07:00
Leonardo de Moura
f08a852da8 feat(library/kernel_bindings): expose environment::add(declaration) method in the Lua API, and add example to demonstrate its usage 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-05-21 11:12:55 -07:00
Leonardo de Moura
8ffe66dc4f feat(library): add module system API 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-05-20 18:35:59 -07:00
Leonardo de Moura
dd3edcb19f feat(library): add shared environment object 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-05-20 15:42:52 -07:00
Leonardo de Moura
11fc917102 test(lua): add tests for improving kernel_bindings coverage 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-05-20 12:16:12 -07:00
Leonardo de Moura
c5e8c10c9d fix(library/normalize): bug in normalize 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-05-20 11:53:58 -07:00
Leonardo de Moura
8872d4a531 refactor(kernel): rename definition class to declaration 
The name was misleading since not every declaration is a definition.

Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-05-20 10:41:38 -07:00
Leonardo de Moura
00b1a84051 feat(library/kernel_bindings): expose environment::for_each method in the Lua API 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-05-20 10:16:19 -07:00
Leonardo de Moura
8a8c5a2b84 feat(library/kernel_bindings): add normalize, whnf, type_check, infer_type methods to environment object Lua API 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-05-20 09:40:50 -07:00
Leonardo de Moura
11793e7998 feat(library): add simple normalization procedure 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-05-20 09:40:30 -07:00
Leonardo de Moura
4103c85ce3 feat(library/kernel_bindings): improve Fun/Pi Lua APIs 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-05-20 09:00:19 -07:00
Leonardo de Moura
bcb9965844 feat(library/kernel_bindings): improve Fun/Pi Lua APIs 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-05-19 17:07:20 -07:00
Leonardo de Moura
a7aacaa782 feat(library/kernel_bindings): improve list_level support in the Lua interface 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-05-19 15:18:48 -07:00
Leonardo de Moura
f3ed20a229 feat(kernel/inductive): add normalizer extension for inductive datatypes, add procedure for creating an standard (empty) Lean environment 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-05-19 12:52:25 -07:00
Leonardo de Moura
f7bc5ac514 fix(library/kernel_bindings): style 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-05-17 13:44:51 -07:00
Leonardo de Moura
d0e7c88ea8 feat(library/kernel_bindings): improve universe level Lua API 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-05-17 13:40:35 -07:00
Leonardo de Moura
5ce134e24e chore(kernel): binder => binding where appropriate 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-05-17 11:37:27 -07:00
Leonardo de Moura
33ae79cd9e refactor(kernel): move shallow copy function to library 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-05-17 11:20:24 -07:00
Leonardo de Moura
d625c9a26c refactor(kernel): move max_sharing to library 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-05-17 11:15:08 -07:00
Leonardo de Moura
36b070cb5b refactor(kernel/inductive): simplify inductive datatype API 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-05-17 09:24:34 -07:00
Leonardo de Moura
4ec89e8561 feat(library/kernel_bindings): add sugar for level expressions in the Lua API 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-05-17 08:10:36 -07:00
Leonardo de Moura
5fc0f06a8d feat(library/kernel_bindings): add Lua API for declaring datatypes 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-05-16 18:08:50 -07:00
Leonardo de Moura
69e72c278d feat(kernel): add proof irrelevance for classes 
We can use this feature to implement proof irrelevance for Identity types.

Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-05-16 15:30:32 -07:00
Leonardo de Moura
193aa4a83f feat(library/kernel_bindings): improve Pi and Fun Lua APIs, and allow users to provide binder information 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-05-16 14:09:00 -07:00
Leonardo de Moura
862c5e354d feat(kernel/expr): attach auxiliary name (for pretty printing) into local constants 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-05-16 13:08:09 -07:00
Leonardo de Moura
40b3129e7b refactor(kernel): improve names 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-05-16 11:28:05 -07:00
Leonardo de Moura
d6d72ba80e refactor(kernel): add binder structure 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-05-16 10:51:54 -07:00
Leonardo de Moura
c0d8a3195c fix(library/kernel_serializer): style 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-05-15 18:00:09 -07:00
Leonardo de Moura
660b9299ad refactor(kernel): (de)serialization procedures don't need to be in the kernel 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-05-15 17:23:36 -07:00
Leonardo de Moura
2e3ffea2ec feat(library): add new coercion API 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-05-15 16:50:12 -07:00
Leonardo de Moura
1be758e4ef feat(library/resolve_macro.cpp): add macro to encode propositional resolution proofs compactly 
This is also a test for the macro_definition infrastructure that we have in the kernel.

Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-05-15 13:53:11 -07:00
Leonardo de Moura
e644419463 feat(library/bin_app): add simpler is_bin_app predicate 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-05-15 13:53:11 -07:00
Leonardo de Moura
24d8092a73 feat(library): add goodies for binary functions 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-05-15 13:53:10 -07:00
Leonardo de Moura
6f8f074f20 feat(library/kernel_bindings): make mk_arrow nary in the Lua API 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-05-15 13:53:10 -07:00
Leonardo de Moura
0edcea55de fix(library/kernel_bindings): clang++ compilation error 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-05-14 17:48:04 -07:00
Leonardo de Moura
6e78256b87 feat(library/kernel_bindings): expose is_bi_equal predicate in the Lua API 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-05-14 17:24:49 -07:00
Leonardo de Moura
2e1a0bd50c feat(kernel/expr): add is_contextual binder info 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-05-14 14:54:27 -07:00
Leonardo de Moura
ab1a89e24c refactor(library): remove dead files 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-05-14 14:44:52 -07:00
Leonardo de Moura
956b775c48 feat(library/kernel_bindings): add let field accessors in the Lua API 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-05-14 14:17:30 -07:00
Leonardo de Moura
2bb537f3fb feat(library/kernel_bindings): add sugar for creating Let expressions from Lua 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-05-14 12:28:10 -07:00
Leonardo de Moura
f903626b78 feat(library/kernel_bindings): allow a list of level params/globals to be provided to declarations (instead of a list of names) 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-05-14 09:45:48 -07:00
Leonardo de Moura
9ed700a5a6 feat(kernel/environment): add forget method 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-05-13 08:40:46 -07:00
Leonardo de Moura
c883c638d6 feat(library/kernel_bindings): expose expression tags in the Lua API 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-05-12 16:50:43 -07:00
Leonardo de Moura
6f03064c46 fix(library/kernel_bindings): bug in mk_definition Lua API 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-05-12 12:56:50 -07:00
Leonardo de Moura
ff9004dae2 refactor(kernel): add level normalizer, is_equivalent predicate, switch to is_equivalent in the type checker, fix bugs in is_lt predicate 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-05-11 18:05:02 -07:00
Leonardo de Moura
e942aecca6 refactor(kernel/type_checker): remove method is_conv 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-05-09 20:29:35 -07:00
Leonardo de Moura
9d96f24766 refactor(kernel): remove convertability constraints 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-05-09 20:25:27 -07:00
Leonardo de Moura
aaea298839 refactor(library/kernel_bindings): remove level pair and list of level pairs from Lua API 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-05-09 20:13:10 -07:00
Leonardo de Moura
7b6d555433 refactor(kernel): remove level constraints from definitions 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-05-09 20:11:50 -07:00
Leonardo de Moura
a650a4f9b5 fix(library/kernel_bindings): bug in mk_app, add expr_lt tests 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-05-09 19:54:52 -07:00
Leonardo de Moura
9676f48470 feat(library/kernel_bindings): add list of certified_definitions in the Lua API 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-05-08 18:51:34 -07:00
Leonardo de Moura
c843243f64 feat(library/kernel_bindings): add add_decl and type_check functions to Lua API 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-05-08 18:08:32 -07:00
Leonardo de Moura
95262fb68d feat(library/kernel_bindings): add remaining type_checker constructors in the Lua API 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-05-08 17:13:06 -07:00
Leonardo de Moura
3aa1afdf51 refactor(util): file name convention 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-05-08 14:15:28 -07:00
Leonardo de Moura
bf57f951ea refactor(util): move Lua named parameter support to a different file 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-05-08 13:20:37 -07:00
Leonardo de Moura
f3c7bc948a feat(library/kernel_bindings): type_checker Lua API 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-05-07 19:04:15 -07:00
Leonardo de Moura
62db010ba3 feat(library/kernel_bindings): add optional arguments to empty_environment Lua API 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-05-07 17:06:27 -07:00
Leonardo de Moura
4c5f88e63b feat(library/kernel_bindings): global level constructor/accessor/recognizer 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-05-07 16:22:45 -07:00
Leonardo de Moura
8ae0e46e9d feat(library/kernel_bindings): add new global level methods to environment Lua API 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-05-07 16:17:04 -07:00
Leonardo de Moura
503d8dfa9e feat(kernel): add global universe level 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-05-06 16:13:29 -07:00
Leonardo de Moura
8095783c36 refactor(library/kernel_bindings): use new functions for simulating python-like named arguments 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-05-05 14:42:16 -07:00
Leonardo de Moura
850ec69538 feat(kernel): add flag for disabling impredicativity of Prop/Bool in the kernel 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-05-05 14:09:17 -07:00
Leonardo de Moura
10d8840cac feat(library/kernel_bindings): add environment Lua API 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-05-02 17:53:32 -07:00
Leonardo de Moura
4f3fad5d65 feat(library/kernel_bindings): add certified_definition Lua API 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-05-02 17:46:59 -07:00
Leonardo de Moura
8f5491447a feat(library/kernel_bindings): add environment_id Lua API 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-05-02 17:42:27 -07:00
Leonardo de Moura
fc2d5f1595 feat(library/kernel_bindings): add definition Lua API 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-05-02 17:00:59 -07:00
Leonardo de Moura
b83410f042 fix(library/kernel_bindings): g++ compilation error 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-05-02 14:34:56 -07:00
Leonardo de Moura
dc627c9965 test(lua): add constraint API tests, and fix minor bugs 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-05-02 13:37:46 -07:00
Leonardo de Moura
6ef161824d feat(library/kernel_bindings): constraint Lua API 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-05-02 13:17:00 -07:00
Leonardo de Moura
802edd77d1 feat(kernel/justification): add is_eqp predicate 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-05-02 12:15:29 -07:00
Leonardo de Moura
94ca82ec85 fix(library/kernel_bindings): incorrect use of pushinteger, and improve justification Lua API 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-05-02 12:03:43 -07:00
Leonardo de Moura
a5229e5283 chore(util/lua): name convention 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-05-01 18:40:18 -07:00
Leonardo de Moura
7cd892464f feat(library/definition): macro definition and application Lua API 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-05-01 18:29:34 -07:00
Leonardo de Moura
9f5122b4c7 feat(library/kernel_bindings): justification Lua API 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-05-01 16:04:30 -07:00
Leonardo de Moura
340c0e0945 feat(library/kernel_bindings): substitution Lua API 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-05-01 15:30:30 -07:00
Leonardo de Moura
686c307976 feat(library/kernel_bindings): expr Lua API 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-05-01 12:25:49 -07:00
Leonardo de Moura
305815cb56 feat(library/kernel_bindings): expose expr_binder_info in the Lua API 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-05-01 11:23:37 -07:00
Leonardo de Moura
884b3f9b53 refactor(library/kernel_bindings): part of expr Lua API 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-04-30 16:37:26 -07:00
Leonardo de Moura
3e222e2f22 refactor(kernel/formatter): add environment as an extra argument to the formatter 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-04-30 10:28:07 -07:00
Leonardo de Moura
fd034521dc feat(library/kernel_bindings): cleanup level Lua API 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-04-29 17:05:25 -07:00
Leonardo de Moura
93a61748e9 fix(kernel/level): bug in optional<level>() constructor 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-04-29 17:00:57 -07:00
Leonardo de Moura
cd30bb49c1 chore(library/arith): remove unnecessary library 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-04-29 16:14:15 -07:00
Leonardo de Moura
984048f40d feat(library/kernel_bindings): new level Lua API 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-04-29 15:08:58 -07:00
Leonardo de Moura
412a3797f4 refactor(*): add pushboolean inline function, and replace lua_pushboolean with it 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-04-29 14:37:16 -07:00
Leonardo de Moura
f7e705badb refactor(library/kernel_bindings): reactive some of the kernel Lua bindings 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-04-29 11:52:09 -07:00
Leonardo de Moura
e769c26800 refactor(kernel): move files that don't need to be in the kernel 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-04-25 18:30:40 -07:00
Leonardo de Moura
4842ae4fc7 refactor(kernel): store macro arguments in the macro_expr 
Before this commit, we "stored" macro arguments using applications.
This representation had some issues. Suppose we use [m a] to denote a macro
application. In the old representation, ([m a] b) and [m a b] would have
the same representation. Another problem is that some procedures (e.g., type inference)
would not have a clean implementation.

Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-04-25 15:02:56 -07:00
Leonardo de Moura
984ac03ac7 refactor(kernel): replace kernel object with definition, disable affected files 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-04-17 16:10:47 -07:00
Leonardo de Moura
bc8379256a refactor(kernel): remove pairs from kernel 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-04-17 10:52:07 -07:00
Leonardo de Moura
0b3599851d refactor(library): remove unnecessary files 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-03-18 10:27:57 -07:00
Leonardo de Moura
d836e45452 refactor(library): remove unnecessary files 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-03-18 10:27:57 -07:00
Leonardo de Moura
4b7fe064fe refactor(kernel): finish formatter interface 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-03-18 10:27:56 -07:00
Leonardo de Moura
28516a8dc2 refactor(library): remove unnecessary file 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-03-18 10:27:56 -07:00
Leonardo de Moura
e0ef6b2e9a refactor(library): monotonic total order on terms 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-03-18 10:27:56 -07:00
Leonardo de Moura
8cd78e00f1 refactor(library): deep_copy procedure 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-03-18 10:27:56 -07:00
Leonardo de Moura
1d10953da4 fix(library/elaborator): add hack for experimenting with algebraic hierarchy 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-02-25 11:20:40 -08:00
Leonardo de Moura
309e7ba880 fix(library/elaborator): temporary fix for bug reported by Jeremy 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-02-24 15:26:21 -08:00
Leonardo de Moura
bfe64a7031 fix(library/elaborator): hack for fixing a bug due to pairs/projs, this is temporary fix until we build a new elaborator 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-02-11 21:30:26 -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
57982135d9 fix(library/simplifier): bug using congr1 theorem 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-02-09 16:24:29 -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
2d70e2f4f2 fix(library/tactic/goal): bug in the proof builder 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-02-09 15:02:36 -08:00
Leonardo de Moura
1c43020fc9 fix(library/tactic/goal): bug creating main proof builder 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-02-08 09:11:07 -08:00
Leonardo de Moura
24528ff685 fix(library/elaborator): fix glitches in the elaborator that were forcing us to provide parameters explicitly 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-02-07 18:02:08 -08:00
Leonardo de Moura
1ec01f5757 refactor(builtin): merge pair.lean with kernel.lean, and add basic theorems 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-02-07 16:04:44 -08:00
Leonardo de Moura
ad7b13104f feat(*): add support for heterogeneous equality in the parser, elaborator and simplifier, adjusts unit test to reflect changes 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-02-07 15:03:16 -08:00
Leonardo de Moura
6d7ec9d7b6 refactor(kernel): add heterogeneous equality back to expr 
The main motivation is that we will be able to move equalities between universes.

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

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

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

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

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

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

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

   H1 : A == B

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

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

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

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

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

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

     (∀ x, B x) == (∀ x, B' x)

is syntax sugar for

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

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

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

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

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

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

Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-02-07 10:28:10 -08:00
Leonardo de Moura
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
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
e85b1f1ac0 feat(library/elaborator): expose elaborator configuration options 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-02-06 17:26:38 -08:00
Leonardo de Moura
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
c01f82aeb7 feat(builtin): add sum types 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-02-05 23:04:44 -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
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
8eec289ce1 feat(kernel): add dependent pairs 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-02-03 16:52:49 -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
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
b444756d20 fix(library/simplifier): missing condition in implication simplification 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-01-30 22:14:01 -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
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
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
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
dd6aae378f fix(library/simplifier): must use metavar_env in is_ceq, otherwise it may ceqs that contain metavariables 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-01-29 13:29:20 -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
92ba4e8b2d feat(library/simplifier): add support for metavariables in conditional rewrite rules 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-01-29 08:34:04 -08:00
Leonardo de Moura
24452289dd feat(library/simplifier): make sure the simplifier can handle meta-variables 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-01-28 20:30:47 -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
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
dbdbd211e3 fix(library/simplifier): compilation warning 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-01-27 23:29:53 -08:00
Leonardo de Moura
160dc71cb5 refactor(kernel/type_checker): use read-only metavariable environment in methods that do not require write access to the metavariable environment 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-01-27 17:38:06 -08:00
Leonardo de Moura
3b152d1a9e refactor(kernel): use ro_metavar_env instead of metavar_env in places where we only need to read the metavariable environment 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-01-27 16:44:43 -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
c088825ef0 feat(library/simplifier): add simplifier_monitor interface 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-01-27 11:46:28 -08:00
Leonardo de Moura
579b751e01 fix(library/simplifier): compilation warning 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-01-26 23:16:24 -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
5e6c1d4904 refactor(builtin/heq): remove axiom hpiext since we don't use it anymore 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-01-26 13:11:17 -08:00
Leonardo de Moura
50df761d90 refactor(library/simplifier): remove the is_typem hack, it is not needed anymore now that we don't use hpiext anymore 
Now, we are again using the following invariant for simplifier_fn::result
The type of in the equality of the result is definitionally equal to the
type of the resultant expression.

Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-01-26 12:21:23 -08:00
Leonardo de Moura
29e448f034 fix(library/simplifier): remove support in the simplifier for (forall x : A, B x) when it is not a proposition, the problem is that hpiext axiom produces an equality in a too big universe 
For example, in the hpiext axiom, the resultant equality if for (Type M+1)

axiom hpiext {A A' : TypeM} {B : A -> TypeM} {B' : A' -> TypeM} :
      A = A' -> (∀ x x', x == x' -> B x = B' x') -> (∀ x, B x) = (∀ x, B' x)

even if the actual arguments A, A’, B, B’ "live" in a much smaller universe (e.g., Type).

So, it would be great if we could move the resultant equality back to the right universe.
I don't see how to do it right now.

The other solution would require a major rewrite of the code base.
We would have to support universe level arguments like Agda, and write the axiom hpiext as:

axiom hpiext {l : level} {A A' : (Type l)} {B : A -> (Type l)} {B' : A' -> (Type l)} :
      A = A' -> (∀ x x', x == x' -> B x = B' x') -> (∀ x, B x) = (∀ x, B' x)

This is the first instance I found where it is really handy to have this feature.
I think this would be a super clean solution, but it would require a big rewrite in the code base.
Another problem is that the actual semantics that Agda has for this kind of construction is not clear to me.
For instance, sometimes Agda reports that the type of an expression is (Set omega).

An easier to implement hack is to support "axiom templates".
We create instances of hipext "on-demand" for different universe levels.
This is essentially what Coq does, since the universe levels are implicit in Coq.
This is not as clean as the Agda approach, but it is much easier to implement.

A super dirty trick is to include some instances of hpiext for commonly used universes
(e.g., Type and (Type 1)).

Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-01-26 12:10:34 -08:00
Leonardo de Moura
52ee9b35dd feat(library/simplifier): add support for simplifying even when heq module is not available 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-01-26 11:29:36 -08:00
Leonardo de Moura
fafaa7e78e fix(library/simplifier): remove hack for handling some constants that expect an argument of type TypeU, the new approach is general 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-01-26 10:10:57 -08:00
Leonardo de Moura
89bb5fbf19 chore(library/simplifier): fix style 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-01-26 00:36:17 -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
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
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
df3129e80d fix(library/hop_match): typo 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-01-25 10:08:53 -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
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
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
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
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
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
425d31f513 chore(library/simplifier): fix style warning 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-01-21 21:45:55 -08:00
Leonardo de Moura
cca15f1390 feat(library/simplifier): congruence theorem compilation 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-01-21 21:16:23 -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
6bcd8e3ee5 fix(library/expr_lt): use expression depth instead of size to obtain a monotonic total order on terms 
It is not incorrect to use size, but it can easily overflow due to sharing.
The following script demonstrates the problem:

local f = Const("f")
local a = Const("a")
function mk_shared(d)
   if d == 0 then
      return a
   else
      local c = mk_shared(d-1)
      return f(c, c)
   end
end
print(mk_shared(33):size())

Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-01-20 17:40:49 -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
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
56f5657ee7 fix(library/simplifier): ordered rewriting 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-01-20 13:13:16 -08:00
Leonardo de Moura
6a63ef3bc5 feat(library/expr_lt): make sure the total order on terms is monotonic 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-01-20 13:07:18 -08:00
Leonardo de Moura
ac9f8f340d feat(kernel/expr): add efficient get_size() function for expressions 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-01-20 12:28:37 -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
8e90d17a0b fix(library/hop_match): style 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-01-19 23:28:12 -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
08053c1172 feat(library/hop_match): make the higher order pattern matcher slightly stronger 
It now can handle (?m t) where t is not a locally bound variable, but ?m and all free variables in t are assigned.

Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-01-19 20:35:50 -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
bbf6e6a256 feat(builtin/kernel): create default rule set in the kernel, and adjust unit tests 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-01-19 11:24:20 -08:00
Leonardo de Moura
3bbadddc94 chore(library/simplifier): cleanup and add comments 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-01-19 10:54:09 -08:00
Leonardo de Moura
7492fd5a2c feat(library/simplifier): add support for simplification by evaluation 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-01-19 10:34:55 -08:00
Leonardo de Moura
11719713ec feat(library/hop_match): optionally unfold constants when performing higher order matching 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-01-19 10:32:06 -08:00
Leonardo de Moura
39c3b17eb7 feat(library/simplifier): add support for Eta-reduction in the simplifier 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-01-19 00:40:35 -08:00
Leonardo de Moura
ed009f4c88 feat(kernel/simplifier): add support for Beta-reduction in the simplifier 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-01-19 00:40:20 -08:00
Leonardo de Moura
32c5bc25e3 refactor(library/simplifier): cleanup rewrite_rule_set, and use it in the simplifier 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-01-18 20:52:33 -08:00
Leonardo de Moura
466285c577 refactor(library/simplifier): rewriter_rule_set 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-01-18 17:26:01 -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
eae79877ae feat(library/simplifier): add rewrite_rule_set 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-01-18 12:50:46 -08:00
Leonardo de Moura
27ab49ae9d feat(library/simplifier): bottom-up simplifier skeleton 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-01-18 12:49:41 -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
534838a36c chore(build): update automatically generated files 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-01-17 18:30:45 -08:00
Leonardo de Moura
d711ca4d1b feat(builtin/heq): add heq C++/Lean interface 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-01-17 18:30:21 -08:00
Leonardo de Moura
2434024272 fix(library/rewriter): warning in release mode 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-01-17 15:46:49 -08:00
Leonardo de Moura
5bee259a00 refactor(kernel): remove unnecessary universe 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-01-16 18:06:25 -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
4dc98bc73b refactor(builtin/kernel): use iff instead of = for Booleans 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-01-16 02:05:09 -08:00
Leonardo de Moura
d063828ff9 feat(library/kernel_bindings): expose abst_name, abst_domain and abst_body in the Lua API 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-01-16 00:03:16 -08:00
Leonardo de Moura
8d73fb5699 fix(library/hop_match): Lua bindings gotcha 
See http://www.luafaq.org/gotchas.html#T6.4

Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-01-15 23:51:26 -08:00
Leonardo de Moura
14c6218bdc chore(kernel): file name convention 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-01-15 20:06:29 -08:00
Leonardo de Moura
3238c7e2a0 feat(library/simplifier): add is_permutation_ceq predicate 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-01-15 19:53:52 -08:00
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
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
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
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
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
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
411f14415d feat(builtin): automatically generate Lean/C++ interface for builtin theories 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-01-09 18:09:53 -08:00