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288 commits

Author SHA1 Message Date
Leonardo de Moura
950d69b977 test(lua): add tests for exercising datatype validation code 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-05-17 20:10:45 -07:00
Leonardo de Moura
b5d07bec2e test(lua): add some comments to inductive datatype test 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-05-17 19:30:43 -07:00
Leonardo de Moura
8fcb84c8f2 feat(kernel/inductive): finish inductive datatype declaration validation 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-05-17 19:19:32 -07:00
Leonardo de Moura
d03e35aaac feat(kernel/inductive): add datatype and introduction rules declarations to environment, and fix tests 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-05-17 13:59:06 -07:00
Leonardo de Moura
53e02a902c test(lua): add is_geq (for universe level) tests 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-05-17 13:42:12 -07:00
Leonardo de Moura
a85a6b685b feat(kernel/formatter): add binding_body_fresh, let_body_fresh, and simplify formatter 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-05-17 12:30:03 -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
989bcdc7ad test(lua): add inductive datatype simple tests 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-05-17 09:25:03 -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
755fac8114 test(lua): add test simulating HoTT compatible environment 
Type.{0} is predicative
   Type.{0} is proof relevant
   Id       is proof irrelevant
   Path     is proof relevant

Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-05-16 15:32:01 -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
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
924b2344af fix(lua/res1): make sure the test works with Lua 5.1 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-05-15 14:47:42 -07:00
Leonardo de Moura
da31e60b02 test(lua): add more tests for type checker 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-05-15 14:17:58 -07:00
Leonardo de Moura
90c4957071 test(lua): add tests for resolve macro 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-05-15 13:53:11 -07:00
Leonardo de Moura
7c0cc3111a fix(kernel/type_checker): we must use different caches for infer_type and check 
The new test tc4.lua exposes the problem being fixed.
We need separate caches otherwise we may mistakenly assume that an expression was already checked by the type checker, while only its type was inferred.

Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-05-15 13:53:11 -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
606e6226c2 fix(kernel/type_checker): the type checker cache was not taking into account binder information 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-05-14 17:14:57 -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
52d682b832 test(lua): unit tests for let expressions 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-05-14 14:29:44 -07:00
Leonardo de Moura
e57b943adf test(lua): add constraint generation test when type checking with metavars 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-05-14 11:06:48 -07:00
Leonardo de Moura
eea561c74b test(lua): add more expr API unit tests 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-05-13 09:20:25 -07:00
Leonardo de Moura
cfa9520655 test(lua): add more level API unit tests 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-05-13 09:20:10 -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
7b15e558a2 refactor(kernel/converter): implement eta in whnf instead of is_def_eq. 
Without cumulativity, we do not have problems with Eta at whnf anymore.
When we had cumulativity, we could not not simply reduce
     (fun x : A, f x) ==> f
This step is correct only if domain(f) was definitionally equal to f.
Here is a problematic example for systems with cumulativity
Given, f : Type.{2} -> Bool
     (fun x : Type.{1}, f x)

Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-05-12 17:49:53 -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
20947de2f1 test(lua): add replace method test 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-05-12 15:51:22 -07:00
Leonardo de Moura
9f86aa73c8 test(lua): add basic universe level tests 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-05-12 14:51:18 -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
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
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
21e3e22017 test(lua/threads): re-activate Lua thread examples 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-05-08 18:52:15 -07:00
Leonardo de Moura
129d108d0b test(lua): add example for testing is_descendant 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-05-08 18:50:24 -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
5a7f181efc feat(util/name_set): improve name_set Lua API 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-05-08 17:17:00 -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
1a8d75c4f0 feat(util): name_set Lua API 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-05-07 18:32:53 -07:00
Leonardo de Moura
7fe61bc69c feat(util): name_generator Lua API 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-05-07 17:28:11 -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
9bf83390dc test(lua): add definition API tests 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-05-02 17:01:22 -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
7b4b862faa test(lua): add justification API tests 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-05-02 12:16:24 -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
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
97e7e4e762 test(lua): remove obsolete test 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-04-29 17:08:50 -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
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
a6116e3156 test(lua): reactivate some of the Lua unit tests 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-04-29 10:36:57 -07:00
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
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
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
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
1ef75a9ba6 test(tests/lua): add test/example that demonstrates how to collect statistics of used theorems 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-01-20 18:04:22 -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
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
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
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
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
5453a8f2f1 test(tests/lua): hop_match experiment 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-01-16 00:15:31 -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
2368c936d3 test(tests/lua): exercise fields method for semantic attachments 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-01-15 17:24:18 -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
f67b5c4d00 test(tests/lua): more to_ceqs tests 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-01-15 13:50:35 -08:00
Leonardo de Moura
c651d3ea2d feat(library/simplifier): filter out propositions that cannot be used as conditional equations 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-01-15 12:06:27 -08:00
Leonardo de Moura
94fa987814 fix(kernel/type_checker): is_proposition method was still assuming that a Pi never has type Bool 
The method is_proposition was using an optimization that became incorrect after  we identified Pi and forall.
It was assuming that any Pi expression is not a proposition.
This is not true anymore. Now, (Pi x : A, B) is a proposition if B is a proposition.

Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-01-15 11:02:52 -08:00
Leonardo de Moura
97d9765992 fix(tests/lua/threads): increase timeout to make sure it passes the test on slow machines 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-01-15 08:46:14 -08:00
Leonardo de Moura
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
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
485ca842c9 test(tests/lua): extra tests for Lua hierachical name API 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-01-14 11:38:10 -08:00
Leonardo de Moura
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
84f017f127 chore(tests/lua): use default environment instead of creating a new one 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-01-12 18:24:04 -08:00
Leonardo de Moura
35bacf95fc feat(shell): provide the default environment when parsing Lua files 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-01-12 18:21:14 -08:00
Leonardo de Moura
7f818ecd92 feat(library): match procedure for higher-order patterns 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-01-12 17:45:24 -08:00
Leonardo de Moura
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
Leonardo de Moura
a339a53f50 feat(util/options): 'verbose' as a system option, add -q (quiet) option 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-01-09 15:31:58 -08:00
Leonardo de Moura
57c0006916 chore(*): cleanup lean builtin symbols, replace :: with _ 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-01-09 08:33:52 -08:00
Leonardo de Moura
5fe8c32da9 feat(kernel): use new universe contraints in the environment, allow new constraints to be added 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-01-06 16:46:11 -08:00
Leonardo de Moura
8c956280d9 chore(frontends/lean): rename setoption and setopaque commands to set::option and set::opaque 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-01-06 11:41:03 -08:00
Leonardo de Moura
935c2a03a3 feat(*): change name conventions for Lean builtin libraries 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-01-05 19:21:44 -08:00
Leonardo de Moura
4ba097a141 feat(frontends/lean): use lowercase commands, replace 'endscope' and 'endnamespace' with 'end' 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-01-05 13:06:36 -08:00
Leonardo de Moura
9f08156a73 feat(frontends/lean/parser): combine Echo and Show commands into the 'print' command 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-01-05 11:03:35 -08:00
Leonardo de Moura
028a9bd9bd feat(frontends/lean/scanner): use Lua style comments in Lean 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-01-05 08:53:27 -08:00
Leonardo de Moura
7726ccad28 chore(builtin): rename nat, int and real modules to Nat, Int and Real. 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-01-01 13:52:25 -08:00
Leonardo de Moura
08718e33dc refactor(builtin): only load the kernel and natural numbers by default 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2013-12-30 13:35:37 -08:00
Leonardo de Moura
3f0279b88c refactor(frontends/lua): replace lean.lua.h with util.lua 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2013-12-26 19:49:26 -08:00
Leonardo de Moura
40eca048e0 feat(extra): replace parse_lean_tpl with improved parse_template, that is based on macros 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2013-12-26 19:28:02 -08:00
Leonardo de Moura
4229e498d2 refactor(kernel/type_checker): combine type_checker and type_inferer into a single class, and avoid code duplication 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2013-12-22 11:51:38 -08:00
Leonardo de Moura
7772c16033 refactor(kernel): add unfold_opaque flag to normalizer, modify how type checker uses the opaque flag, remove hidden_defs, and mark most builtin definitions as opaque 
After this commit, in the type checker, when checking convertability, we first compute a normal form without expanding opaque terms.
If the terms are convertible, then we are done, and saved a lot of time by not expanding unnecessary definitions.
If they are not, instead of throwing an error, we try again expanding the opaque terms.
This seems to be the best of both worlds.
The opaque flag is a hint for the type checker, but it would never prevent us from type checking  a valid term.

Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2013-12-20 12:47:47 -08:00
Leonardo de Moura
dd72269b13 feat(frontends/lean): rename command Set to SetOption 
It is not nice to have Set as a reserved keyword. See example examples/lean/set.lean

Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2013-12-18 21:18:48 -08:00
Leonardo de Moura
0eaa98221b fix(shell/lean): Lua repl missing, incorrect exit code in interactive mode, missing tests 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2013-12-09 12:25:19 -08:00
Leonardo de Moura
3ea09daf44 fix(frontends/lean/frontend): is_coercion for environment objects that have parents 
Bug was exposed by tests/lua/coercion_bug1.lua

Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2013-12-08 17:47:00 -08:00
Leonardo de Moura
2a80807fef refactor(frontends/lean/pp): replace weak_ref with a strong reference, add new function (lean_formatter) for creating a Lean object formatter in the Lua API 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2013-12-08 17:33:18 -08:00
Leonardo de Moura
04b67f8b14 refactor(kernel/object): remove 'null' object, and operator bool for kernel objects 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2013-12-08 14:37:38 -08:00
Leonardo de Moura
3e1fd06903 refactor(kernel/expr): remove 'null' expression, and operator bool for expression 
After this commit, a value of type 'expr' cannot be a reference to nullptr.
This commit also fixes several bugs due to the use of 'null' expressions.

TODO: do the same for kernel objects, sexprs, etc.

Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2013-12-07 23:21:10 -08:00
Leonardo de Moura
0c059a9917 feat(library/tactic): use _tac suffix instead of _tactic like Isabelle 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2013-12-05 20:06:32 -08:00
Leonardo de Moura
8e53643b61 feat(library/fo_unify): first order unification 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2013-12-03 12:21:21 -08:00
Leonardo de Moura
70e06f8e86 feat(library/hidden_defs): hidden definitions are just hints for tactics and solvers 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2013-12-01 10:27:27 -08:00
Leonardo de Moura
7ed78815e0 fix(tests/lua): incorrect assertion 
The assertion got violated after a bug was fixed in the to_goal procedure.

Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2013-11-28 21:53:57 -08:00
Leonardo de Moura
662fb71d59 chore(tests/lua/threads): fix type in file name 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2013-11-28 13:12:54 -08:00
Leonardo de Moura
ce674d2d43 feat(library/tactic): execute Lua tactics using coroutines 
This is very important when several Lua tactics are implemented in the
same Lua State object.  In this case, even if we use the par
combinator, a Lua tactic will block the other Lua tactics running in
the same Lua State object.

With this commit, a Lua tactic can use yield to allow other tactics
in the same State object to execute.

Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2013-11-28 13:09:33 -08:00
Leonardo de Moura
09bc7ddf91 feat(library/tactic): add support for migratic tactic framework object between Lua states 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2013-11-28 08:03:05 -08:00
Leonardo de Moura
3dc7a856f0 refactor(library/tactic): use unprotect/protect idiom for callbacks in the tactic API 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2013-11-27 18:11:46 -08:00
Leonardo de Moura
b4a8418d38 feat(library/tactic): expose tactics in the Lua API 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2013-11-27 17:47:29 -08:00
Leonardo de Moura
0934d7b2f4 fix(frontends/lua): make sure Lua 'sleep' function support interruption 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2013-11-27 13:25:06 -08:00
Leonardo de Moura
99a811a586 feat(bindings/lua): expose io_state object in the Lua API 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2013-11-26 12:54:47 -08:00
Leonardo de Moura
861be072d8 feat(bindings/lua): add proof_state to Lua API 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2013-11-26 11:34:58 -08:00
Leonardo de Moura
fd3b9e39f6 feat(bindings/lua): add cex_builder to Lua API 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2013-11-26 09:17:57 -08:00
Leonardo de Moura
4d9075bdfd feat(bindings/lua): add proof_map, assignment and proof_builder to Lua API 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2013-11-26 08:37:37 -08:00
Leonardo de Moura
3ebc099ec5 feat(bindings/lua/options): improve options Lua API 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2013-11-25 21:05:05 -08:00
Leonardo de Moura
feeb6d9105 feat(bindings/lua): add goal object to Lua API 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2013-11-25 20:51:47 -08:00
Leonardo de Moura
7b8bd97699 feat(lua/expr): add method for extracting semantic attachment data 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2013-11-19 19:06:47 -08:00
Leonardo de Moura
a98fdd9be6 refactor(shell): combine lean and leanlua executables in a single executable 
The main motivation is to allow users to configure/extend Lean using .lua files before loading the actual .lean files.
Example:
        ./lean extension1.lua extension2.lua file.lean

Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2013-11-19 16:48:21 -08:00
Leonardo de Moura
87775cbc07 chore(build): include incorrect output in the logs 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2013-11-18 15:39:55 -08:00
Soonho Kong
20756c382c test(*): split leantests, leanslowtests, leanluatests, leanluadocs into singletons 2013-11-18 18:27:11 -05:00
Leonardo de Moura
b2d1acd0b7 test(lua/environment): add missing tests 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2013-11-18 09:27:46 -08:00
Leonardo de Moura
1315378ebb test(*): add missing tests 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2013-11-18 09:13:34 -08:00
Leonardo de Moura
7976937e4c test(lua/metavar_env): add missing tests 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2013-11-17 19:18:47 -08:00
Leonardo de Moura
69be5f6c94 feat(kernel/environment): track which modules were already imported 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2013-11-17 18:15:44 -08:00
Leonardo de Moura
5f651d46e6 tests(lua/frontend_lean): add missing tests 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2013-11-17 13:48:29 -08:00
Leonardo de Moura
df94e44806 test(lua/expr): add missing tests 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2013-11-17 11:46:24 -08:00
Leonardo de Moura
e693c2de01 test(lua/name): add missing tests 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2013-11-17 11:25:21 -08:00
Leonardo de Moura
8a13df3ce1 test(lua/type_inferer): add missing tests 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2013-11-17 11:17:32 -08:00
Leonardo de Moura
f586e58ac3 test(lua/justification): add more tests 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2013-11-17 11:13:10 -08:00
Leonardo de Moura
d0bac61e74 fix(lua/numerics): bug in bindings, add more tests 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2013-11-17 11:02:44 -08:00
Leonardo de Moura
926ed0a02d feat(lua): add type_inferer object to Lua API 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2013-11-16 19:18:15 -08:00
Leonardo de Moura
8525e8534b feat(lua): expose parse_expr and parse_commands from frontends/lean in the Lua API 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2013-11-15 16:11:26 -08:00
Leonardo de Moura
a74412963a chore(build): only execute lua multi-threading tests when on cygwin or linux, and using g++ 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2013-11-15 09:27:58 -08:00
Leonardo de Moura
5e170ce5fe chore(tests/lua): move examples that use threads to tests/lua/threads 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2013-11-15 09:11:58 -08:00
Leonardo de Moura
b5dcb93550 feat(lua): communication channels for threads 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2013-11-14 21:10:46 -08:00
Leonardo de Moura
3a924a5fb1 perf(lua/name): improve to_name_ext performance 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2013-11-14 18:06:09 -08:00
Leonardo de Moura
abe93dfec0 fix(lua/splay_tree): for_each method was crashing if the map was updated during for_each 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2013-11-14 13:48:23 -08:00
Leonardo de Moura
64cce595a5 feat(lua): add splay_maps to the Lua API 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2013-11-14 13:35:36 -08:00
Leonardo de Moura
9e445d1917 feat(lua): interrupt and sleep Lua APIs 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2013-11-14 10:04:32 -08:00
Leonardo de Moura
691893258d feat(kernel/expr): add hash code based on allocation time 
The new hash code has the property that given expr_cell * c1 and expr_cell * c2,
if c1 != c2 then there is a high propbability that c1->hash_alloc() != c2->hash_alloc().

The structural hash code hash() does not have this property because we may have
c1 != c2, but c1 and c2 are structurally equal.

The new hash code is only compatible with pointer equality.
By compatible we mean, if c1 == c2, then c1->hash_alloc() == c2->hash_alloc().
This property is obvious because hash_alloc() does not have side-effects.

The test tests/lua/big.lua exposes the problem fixed by this commit.

Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2013-11-14 02:43:11 -08:00
Leonardo de Moura
ae7ea99b56 fix(lua): copy_values and add tests 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2013-11-13 21:31:27 -08:00
Leonardo de Moura
351ef867d2 feat(lua): add abstract, instantiate, has_free_vars, lift/lower free_vars to Lua API 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2013-11-13 17:02:49 -08:00
Leonardo de Moura
1bf6051866 test(lua): expr LUA API test 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2013-11-13 15:29:31 -08:00