michael/lean2
1
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity Actions
1466 commits 3 branches 0 tags 28 MiB
Commit graph

1263 commits

Author SHA1 Message Date
Leonardo de Moura
41062fdf9f feat(library/tactic): add pretty printer for goal and proof_state objects, add solve method for tactics, add trivial example 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2013-11-21 17:29:06 -08:00
Leonardo de Moura
28a56e3acf fix(kernel/expr_eq): the cached type should ignored when comparing expressions 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2013-11-21 17:29:06 -08:00
Leonardo de Moura
5346b67651 refactor(library/state): rename Lean state object to io_state 
The idea is to make it clear that io_state is distinguish it from proof_state, and from leanlua_state.

Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2013-11-21 17:29:06 -08:00
Leonardo de Moura
680ec8abba refactor(library/tactic): reorganize tactic API, add assumption_tactic 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2013-11-21 17:29:06 -08:00
Leonardo de Moura
ca74d069b9 feat(util/interrupt): reset interrupt flag before throwing exception 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2013-11-21 17:29:06 -08:00
Leonardo de Moura
8515821d56 feat(util/list): add map_filter template 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2013-11-21 17:29:06 -08:00
Leonardo de Moura
f6bfd11aed chore(util/list_fn): fix typo 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2013-11-21 17:29:06 -08:00
Leonardo de Moura
df04dbe096 chore(util): use && when appropriate 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2013-11-21 17:29:06 -08:00
Leonardo de Moura
63bbf07f64 feat(library/tactic): add 'idtac' tactic and 'then' tactical 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2013-11-21 17:29:06 -08:00
Leonardo de Moura
a03841c18b feat(tactic): refine tactic API 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2013-11-21 17:29:06 -08:00
Leonardo de Moura
367108edfa fix(library/tactic): compilation problem reported by clang++ 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2013-11-21 08:53:37 -08:00
Leonardo de Moura
f6d1f4db60 chore(library/tactic): remove trash 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2013-11-20 17:25:00 -08:00
Leonardo de Moura
3a6aa2dc75 feat(library/tactic): add tactic framework APIs 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2013-11-20 17:19:05 -08:00
Leonardo de Moura
be8fe1b902 fix(kernel/replace): make it more robust, and add clear method 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2013-11-20 13:19:21 -08:00
Leonardo de Moura
87eb254a1a fix(tests/util/thread): incorrect unit test 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2013-11-20 11:28:19 -08:00
Leonardo de Moura
b0a4d60174 fix(util/interval): add missing explicit template instantiation 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2013-11-20 09:56:19 -08:00
Leonardo de Moura
a3a90f8e69 feat(shell): add command line options 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2013-11-19 19:30:39 -08:00
Leonardo de Moura
eba31a0516 test(util/interval): add more tests 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2013-11-19 19:07:09 -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
f78cf6a415 feat(shell): add getopt 
Let travis find out which platforms support it

Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2013-11-19 17:04:55 -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
2265ef78c4 feat(util/list): add emplace_front 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2013-11-19 16:27:31 -08:00
Leonardo de Moura
20c6789d1c feat(extra): add extension that demonstrates how to parse 'templates' 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2013-11-19 15:56:44 -08:00
Leonardo de Moura
6989f1f9ba refactor(kernel/metavar): remove unnecessary variable 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2013-11-19 14:41:54 -08:00
Leonardo de Moura
0126fa0499 refactor(kernel): add find_fn, replace for_each_fn with find_fn when appropriate, remove unnecessary function has_cached_type 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2013-11-19 13:03:46 -08:00
Leonardo de Moura
5cfcb7e144 chore(kernel/for_each): use consistent naming convetions 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2013-11-19 11:24:02 -08:00
Leonardo de Moura
7f088b7635 feat(kernel): add (optional) field m_type to expr_const, this field is useful for implementing the tactic framework 
This field should not be visible in the external API.

Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2013-11-19 11:21:52 -08:00
Leonardo de Moura
9bafa5a9e8 chore(memcheck): suppress memory leak at awk 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2013-11-18 23:50:41 -08:00
Leonardo de Moura
57bf4f3e67 feat(kernel/expr): avoid recursion when deleting expressions 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2013-11-18 18:41:08 -08:00
Leonardo de Moura
2951c92ad1 feat(kernel/for_each): avoid recursion at for_each template 
It saves a lot of stack space.

Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2013-11-18 18:08:31 -08:00
Leonardo de Moura
e10d17a0f4 feat(util/sexpr): avoid recursion when destructing sexpr's 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2013-11-18 17:46:53 -08:00
Leonardo de Moura
64379a5a10 perf(util/list): use buffer of cells instead of buffer of T 
T may be a big object. We minimize the ammount of copying using buffer of (pointers to) cells.

Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2013-11-18 17:12:02 -08:00
Leonardo de Moura
76252816ac perf(util/list): avoid recursion in map and destructor 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2013-11-18 16:47:52 -08:00
Leonardo de Moura
d67bf995ed feat(util/list): avoid recursion at for_each template 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2013-11-18 15:52:31 -08:00
Leonardo de Moura
06c004aa75 fix(build): typo 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2013-11-18 15:36:07 -08:00
Leonardo de Moura
adf4856f88 feat(util/list): add map_reuse template 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2013-11-18 15:32:02 -08:00
Soonho Kong
20756c382c test(*): split leantests, leanslowtests, leanluatests, leanluadocs into singletons 2013-11-18 18:27:11 -05:00
Leonardo de Moura
53dc8c8c57 test(util/shared_mutex): add missing tests 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2013-11-18 14:03:18 -08:00
Leonardo de Moura
88b2feff6f test(doc/lua): add script for validating examples in the Lua API documentation 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2013-11-18 12:49:57 -08:00
Leonardo de Moura
4d1d3d7cc7 fix(build): cygwin also needs the LEAN_WINDOWS flag 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2013-11-18 12:40:02 -08:00
Leonardo de Moura
bfc4023a9e fix(tests/kernel/expr): remove unused function 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2013-11-18 10:09:47 -08:00
Leonardo de Moura
80fccc5533 fix(util/realpath): style 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2013-11-18 09:55:16 -08:00
Leonardo de Moura
e0c23e5984 fix(kernel/environment): compilation problem on Windows 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2013-11-18 09:52:47 -08:00
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
93b02a6fad fix(lua): fix C++ stack unwinding bug, we should never invoke lua_error from a catch block 
lua_error and luaL_error are based on the longjmp C function. They will not correctly unwind the C++ stack. We should only invoke them after we finished handling the C++ exceptions and unwinding the C++ stack, and invoking the destructors for each object living on the stack.

Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2013-11-18 06:49:54 -08:00
Leonardo de Moura
2ccd5cc559 fix(lua): workaround memory leak problem with __cxa_thread_atexit code generated by g++ 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2013-11-18 06:40:32 -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
5254dba195 test(library/update_expr): add missing tests 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2013-11-17 13:36:15 -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
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
0e6df0a55b fix(lua): warning message 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2013-11-16 19:58:34 -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
4ebb3c572a feat(kernel/environment): make the environment throw an exception when weak-ref has expired 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2013-11-16 18:35:17 -08:00
Leonardo de Moura
590b14570f feat(lua): improve error handling in Lua API 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2013-11-16 18:21:42 -08:00
Leonardo de Moura
516c5c8fea feat(lua): add metavar_env objects to Lua API 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2013-11-16 14:44:33 -08:00
Leonardo de Moura
c8fff45319 feat(lua): add justification objects to Lua API 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2013-11-16 11:12:58 -08:00
Leonardo de Moura
9398ea5a59 feat(util/shared_mutex): add support for recursive lock at shared_mutex 
We need support for recursive locks. The main user of this class is
the environment object. This commit adds a test that demonstrates that
the shared_lock of the environment object may be recursively requested.
Before this fix, the Lean was deadlocking in this example.

Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2013-11-15 22:01:11 -08:00
Leonardo de Moura
209a2d10f7 fix(lua): replace std::mutex with std::recursive_mutex, add test that demonstrates the problem that is being fixed 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2013-11-15 21:26:16 -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
d9d9c05e4f refactor(lua/options): remove unnecessary function 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2013-11-15 12:53:27 -08:00
Leonardo de Moura
19533c811b feat(library/script_evaluator): add abstract class that exposes only the API needed by frontend objects 
The main motivation is to break the remove the dependency frontends/lean <-- bindings/lua.
This dependency is undesirable because we want to expose the frontends/lean parser and pretty printer objects at bindings/lua.

Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2013-11-15 12:13:09 -08:00
Leonardo de Moura
1cb0262ec5 chore(memcheck): make the suppression entries for LuaJIT more general 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2013-11-15 11:34:50 -08:00
Leonardo de Moura
e7552d35e0 chore(memcheck): hide another tcmalloc bug 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2013-11-15 11:33:34 -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
782335581b fix(lua/thread): uninitialized memory 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2013-11-15 09:07:18 -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
bd1e9c7548 feat(lua): throw an exception if the user tries to create a thread and Lean was compiled without multi-threading support 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2013-11-14 19:06:36 -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
cd6bd79d63 refactor(lua): cleanup Lua API, improve performance 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2013-11-14 17:33:46 -08:00
Leonardo de Moura
6575566f9f fix(lua): rename lua_ref to lref, lua_ref is a macro in LuaJIT 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2013-11-14 15:50:56 -08:00
Leonardo de Moura
09bed4786c feat(lua): add semantic attachments for builtin arithmetical values to Lua API, improve mk_constant 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2013-11-14 15:15:04 -08:00
Leonardo de Moura
05f254f605 refactor(lua): move lua_ref to separate file 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2013-11-14 14:41:54 -08:00
Leonardo de Moura
bdea42b2a9 style(lua): ignore bogus warning 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2013-11-14 14:13:06 -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
8e56726116 fix(library/expr_lt): fix bug when using hash codes 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2013-11-14 13:18:33 -08:00
Leonardo de Moura
b0322787ff feat(lua): add has_metavar method 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2013-11-14 10:28:50 -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
c759fc93f7 test(lua): object Lua API 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2013-11-13 20:59:28 -08:00
Leonardo de Moura
6e0fc0ca9b chore(build): include dl.so when compiling on Linux 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2013-11-13 18:44:28 -08:00
Leonardo de Moura
6964e374c0 fix(lua): luajit incompatibility 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2013-11-13 18:08:00 -08:00
Leonardo de Moura
cbc4254ff5 feat(lua): add occurs method to expr Lua API 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2013-11-13 17:10:09 -08:00
Leonardo de Moura
ad1180c5b4 fix(kernel/occurs): typos 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2013-11-13 17:04:56 -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
ed3cf8152b feat(lua): add for_each to expr Lua API 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2013-11-13 16:30:59 -08:00
Leonardo de Moura
eacd60de9c feat(frontends/lean): return the operator associated with constant expressions that are names of builtin values 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2013-11-13 16:08:21 -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
Leonardo de Moura
9a22702383 feat(lua): make objects() and localobjects() methods return iterators in the environment LUA API 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2013-11-13 14:26:01 -08:00
Leonardo de Moura
8c52d47692 chore(lua): rename env() to get_env() 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2013-11-13 13:58:51 -08:00
Leonardo de Moura
ba0889265e refactor(lua): cleanup Lua bindings 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2013-11-13 13:55:05 -08:00
Leonardo de Moura
b5f0185729 fix(lua): replace lua_pushfstring with lua_pushstring 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2013-11-13 12:14:55 -08:00
Leonardo de Moura
a80adae1c3 feat(lua): add fields method to sexpr Lua API 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2013-11-13 12:10:24 -08:00
Leonardo de Moura
e2efce6b62 style(util/sexpr): name convetion for enumeration types 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2013-11-13 11:50:12 -08:00
Leonardo de Moura
450128e28b refactor(lua): cleanup Lua bindings, and add accessor/tester to expr Lua API 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2013-11-13 11:46:09 -08:00
Leonardo de Moura
c4c548dc5d feat(*): simplify interrupt propagation 
Instead of having m_interrupted flags in several components. We use a thread_local global variable.
The new approach is much simpler to get right since there is no risk of "forgetting" to propagate
the set_interrupt method to sub-components.

The plan is to support set_interrupt methods and m_interrupted flags only in tactic objects.
We need to support them in tactics and tacticals because we want to implement combinators/tacticals such as (try_for T M) that fails if tactic T does not finish in M ms.
For example, consider the tactic:

    try-for (T1 ORELSE T2) 5

It tries the tactic (T1 ORELSE T2) for 5ms.
Thus, if T1 does not finish after 5ms an interrupt request is sent, and T1 is interrupted.
Now, if you do not have a m_interrupted flag marking each tactic, the ORELSE combinator will try T2.
The set_interrupt method for ORELSE tactical should turn on the m_interrupted flag.

Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2013-11-12 21:45:48 -08:00
Leonardo de Moura
b31233e8c2 feat(util/interrupt): restore interrupt module 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2013-11-12 21:16:10 -08:00
Leonardo de Moura
126c45626c chore(memcheck.supp): add suppressions for LuaJIT bugs 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2013-11-12 18:52:03 -08:00
Leonardo de Moura
be093ecf90 feat(lua): use formatter available in the state object to convert Lean objects into strings in the Lua API 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2013-11-12 16:56:30 -08:00
Leonardo de Moura
9a5f86fce6 feat(lua): use (** ... **) instead of {{ ... }} for nested Lua scripts 
The token }} is a bad delimiter for blocks of Lua script code nested in Lean files.
The problem is that the sequence }} occurs very often in Lua code because Lua uses { and } to build tables/lists/arrays.
Here is an example of Lua code that contains the sequence }}
     t = {{1, 2}, {2, 3}, {3, 4}}

In Lean, (* ... *) is used to create comments. Thus, (** ... **) code blocks will not affect
valid Lean files. It also looks reasonably good.

Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2013-11-12 16:05:49 -08:00
Leonardo de Moura
8190d4fed5 feat(lua): allow Lua scripts to update 'global' options 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2013-11-12 15:38:00 -08:00
Leonardo de Moura
0a6f622aec chore(build): remove CheckLuaObjlen, it is easier to check the Lua version 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2013-11-12 12:58:22 -08:00
Leonardo de Moura
b986af09ed feat(lua): add support for copying closures between Lua states 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2013-11-12 12:54:34 -08:00
Leonardo de Moura
c46edcf370 feat(lua): expose formatter in the Lua API 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2013-11-12 11:19:15 -08:00
Leonardo de Moura
2af2a69fc6 feat(lua): expose kernel objects in the Lua API 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2013-11-12 09:40:29 -08:00
Leonardo de Moura
d257156b88 fix(lua): memory leaks, we should not use luaL_error because it does not unwind C++ stack 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2013-11-11 21:45:13 -08:00
Leonardo de Moura
a30e02d862 fix(lua): redefine Lua 'print' function, and make sure it is thread safe 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2013-11-11 21:15:21 -08:00
Leonardo de Moura
eb9d0f0552 test(lua): add example showing how to access/update an environment object using multiple threads 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2013-11-11 20:53:23 -08:00
Leonardo de Moura
0af8f17834 feat(lua): allow Booleans to be copied between Lua states 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2013-11-11 20:39:46 -08:00
Leonardo de Moura
7cb15cdac5 feat(lua): allow environment object references to be moved between Lua states 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2013-11-11 20:32:36 -08:00
Leonardo de Moura
ac6c18321a fix(lua): make sure environment objects can be safely accessed/updated from current threads 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2013-11-11 20:29:53 -08:00
Leonardo de Moura
596e4aeb57 feat(util/shared_mutex): add shared_mutex object, this is a temporary replacement for std::shared_mutex that will be available in C++11 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2013-11-11 20:00:21 -08:00
Leonardo de Moura
cc7b5b7e50 fix(lua): disable custom allocation for Lua, it is crashing 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2013-11-11 18:20:52 -08:00
Leonardo de Moura
7d49df3985 style(lua): fix cpplint.py warnings 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2013-11-11 17:46:39 -08:00
Leonardo de Moura
69b41eae70 feat(lua): add support for multiple execution threads in the Lua API 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2013-11-11 16:25:17 -08:00
Leonardo de Moura
95785c7aaa feat(lua): add State objects, it allows us to create several Lua State objects in a lua script 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2013-11-11 15:05:50 -08:00
Leonardo de Moura
f158b0b311 fix(util/memory): make sure realloc behaves like free when sz == 0 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2013-11-11 13:42:22 -08:00
Leonardo de Moura
7cc6c35eee feat(lua/name): add hash method to name objects 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2013-11-11 13:32:56 -08:00
Leonardo de Moura
8dd85ebc15 fix(lua): typos and a bug in the expr Lua bindings 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2013-11-11 13:11:06 -08:00
Leonardo de Moura
b227775a07 test(lua): add tests for format object 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2013-11-11 12:58:47 -08:00
Leonardo de Moura
31abc00db8 chore(*): add LCOV_EXCL_LINE to lean_unreachable statements 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2013-11-11 09:19:38 -08:00
Leonardo de Moura
dbdb9a41af style(lua): use C++-style cast 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2013-11-10 11:14:04 -08:00
Leonardo de Moura
7683188ab0 chore(emplace_back): use emplace_back when appropriate 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2013-11-10 11:14:04 -08:00
Leonardo de Moura
8c140ff86f feat(lua): allow lua scripts (embedded in Lean files) to access the environment 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2013-11-10 11:14:04 -08:00
Leonardo de Moura
3078923ea4 fix(kernel/type_checker): add missing test, and kernel_exception has_no_type_exception 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2013-11-10 11:14:04 -08:00
Leonardo de Moura
9d61fcf85b feat(lua): expose environment objects in the Lua bindings 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2013-11-10 11:14:04 -08:00
Leonardo de Moura
119e0ba5e6 feat(lua): add to_nonnull_expr 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2013-11-10 11:14:04 -08:00
Leonardo de Moura
8dd62e76be feat(lua): add mk_metavar to Lua API 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2013-11-10 11:14:04 -08:00
Soonho Kong
1cf037f11e chore(cmake): do not delete coverage.info.cleaned which will be used for coveralls.io 2013-11-09 22:19:08 -05:00
Leonardo de Moura
6b71fb346c fix(lua): add missing files for local_context 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2013-11-09 12:47:52 -08:00
Leonardo de Moura
554defe89d feat(lua): expose local_context objects in the Lua bindings 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2013-11-09 12:18:46 -08:00
Leonardo de Moura
183080294b fix(cmake/Modules/CheckLuaNewstate.cc): compilation problem on cygwin 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2013-11-09 12:18:20 -08:00
Leonardo de Moura
ad2de3b53c feat(lua): expose level objects in the Lua bindings 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2013-11-08 17:08:24 -08:00
Leonardo de Moura
5a97f730af feat(lua): add Type function 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2013-11-08 15:52:58 -08:00
Leonardo de Moura
32605d8266 feat(lua): expose level objects in the Lua bindings 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2013-11-08 15:38:00 -08:00
Soonho Kong
d4dbc18404 chore(cmake/Modules/FindLua): disable TRY_RUN in cross-compilation. 2013-11-08 18:04:55 -05:00
Leonardo de Moura
bbab454b6c fix(lua): cpplint.py does not like multiline strings 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2013-11-08 13:27:20 -08:00
Leonardo de Moura
ec56ba72ea fix(lua): cygwing compilation problem 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2013-11-08 13:27:20 -08:00
Leonardo de Moura
cc17be1ef1 feat(lua): add is_* predicates 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2013-11-08 12:40:28 -08:00
Leonardo de Moura
5c35a9ad0a feat(lua): add Consts function 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2013-11-08 12:09:46 -08:00
Leonardo de Moura
b7d8391306 refactor(lua): remove duplicate code, separate lua_exception, add missing #pragma once 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2013-11-08 11:59:47 -08:00
Leonardo de Moura
c8b0c10c88 refactor(lua): make Lua a required (non-optional) package 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2013-11-08 10:56:29 -08:00
Leonardo de Moura
c5207489fd fix(memory): realloc must behave like malloc when ptr is nullptr 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2013-11-08 10:31:57 -08:00
Leonardo de Moura
a10aa0880f fix(build): add CheckLuaObjlen.cc test, not every Lua version has the function lua_objlen 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2013-11-08 08:26:04 -08:00
Leonardo de Moura
b57ad80d5e feat(lua): expose basic API for Lean expressions in the Lua bindings 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2013-11-07 21:54:57 -08:00
Leonardo de Moura
fb09fc9fe6 feat(lua): add set_global_function template, and to_name_ext function 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2013-11-07 21:54:57 -08:00
Leonardo de Moura
db8b16641c chore(build): check if the Lua installed in the system supports lua_newstate 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2013-11-07 21:54:57 -08:00
Leonardo de Moura
9000c7c2fa feat(lua): expose format objects in the Lua bindings 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2013-11-07 21:54:42 -08:00
Leonardo de Moura
6f432b4094 feat(lua): make Lua use our malloc/realloc, catch error when initializing Lua 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2013-11-07 15:52:39 -08:00
Leonardo de Moura
57b9657bf0 feat(lua): add lua_exception for wrapping lua errors, and improve Lua error messages in the Lean frontend 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2013-11-07 15:19:26 -08:00
Leonardo de Moura
a9b2be0b9c feat(frontends/lean): add support for embedded Lua scripts in Lean files 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2013-11-07 13:56:04 -08:00
Leonardo de Moura
ff16ffaea3 fix(kernel/environment): warning produced by clang 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2013-11-07 11:36:08 -08:00
Leonardo de Moura
8012c4f644 fix(kernel/environment): add weak reference to environment objects 
We need weak references to environment objects because the environment has a reference to the type_checker and the type_checker has a reference back to the environment. Before, we were breaking the cycle using an "environment const &". This was a dangerous hack because the environment smart pointer passed to the type_checker could be on the stack. The weak_ref is much safer.

Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2013-11-07 11:29:08 -08:00
Leonardo de Moura
9c60eed93c refactor(kernel/metavar): avoid using unique names for default metavariable prefix 
The problem is that unique names depend on the order compilation units are initialized. The order of initialization is not specified by the C++ standard. Then, different compilers (or even the same compiler) may produce different initialization orders, and consequently the metavariable prefix is going to be different for different builds. This is not a bug, but it makes unit tests to fail since the output produced by different builds is different for the same input file.
Avoiding unique name feature in the default metavariable prefix avoids this problem.

Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2013-11-07 10:16:25 -08:00
Leonardo de Moura
2141ee12f4 refactor(frontends/lean): use extension objects to store lean default frontend data in the environment 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2013-11-07 10:00:12 -08:00
Leonardo de Moura
80e23f98c7 feat(kernel/environment): add environment extension objects, the environment can be extended with frontend specific objects 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2013-11-06 19:22:30 -08:00
Soonho Kong
c5fd828a71 chore(cmake): switch the ordering between gmp and mpfr 2013-11-05 19:31:10 -05:00
Leonardo de Moura
e7d508043b fix(lua/numerics): errors when cross-compiling for Windows 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2013-11-05 13:35:34 -08:00
Leonardo de Moura
40fde1a69c test(lua): invoke Lua binding tests from ctest 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2013-11-05 13:17:10 -08:00
Leonardo de Moura
0cc475e581 fix(lua/sexpr): make sexpr bindings robust 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2013-11-05 13:03:32 -08:00
Leonardo de Moura
055cc7f957 fix(lua): make testudata compatible with Lua 5.1 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2013-11-05 11:35:09 -08:00
Leonardo de Moura
5a01f167df fix(lua): expose missing functions 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2013-11-04 21:33:33 -08:00
Leonardo de Moura
0ac8f2d8d9 feat(lua/sexpr): improve sexpr Lua bindings 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2013-11-04 21:28:17 -08:00
Leonardo de Moura
f13a97397f feat(lua): expose s-expressions in the Lua bindings 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2013-11-04 19:58:32 -08:00
Leonardo de Moura
1e12ddc7a9 refactor(lua): add goodies for accessing Lean values on the Lua stack 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2013-11-04 19:45:15 -08:00
Leonardo de Moura
47c289a24b refactor(lua/name): improve name bindings for Lua 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2013-11-04 18:48:21 -08:00
Leonardo de Moura
3c475e890d refactor(lua/options): improve options bindings for Lua 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2013-11-04 18:46:58 -08:00
Leonardo de Moura
7b77863507 refactor(lua/name): improve name bindings for Lua 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2013-11-04 18:44:20 -08:00
Leonardo de Moura
f488e6bbfc fix(lua): safe_function_wrapper 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2013-11-04 18:12:53 -08:00
Leonardo de Moura
92b2591a6f style(lua): add missing include 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2013-11-04 16:29:47 -08:00
Leonardo de Moura
32d3990fc7 fix(lua): problem when compiling with clang++ 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2013-11-04 15:05:04 -08:00
Leonardo de Moura
0579970fc5 feat(lua): expose options object in the Lua bindings 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2013-11-04 14:38:49 -08:00
Leonardo de Moura
543aea65c9 chore(lua): rename init_* functions to open_* 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2013-11-04 13:54:51 -08:00
Leonardo de Moura
fd7e85f0bb feat(lua): add safe_function template that catches Lean and C++ exceptions and convert them into Lua errors 
I'm using the approach described at:
http://stackoverflow.com/questions/4615890/how-to-handle-c-exceptions-when-calling-functions-from-lua

BTW, in some Lua versions, the C++ exceptions are correctly propagated.
I think we should not rely on features of particular implementations.
For example, LuaJIT does not propagate C++ exceptions.
Whenever an exception is thrown from C++ code invoked from LuaJit, LuaJit interrupts the execution and converts it to an error "C++ exception".
On the other hand, Lua 5.2 PUC-Rio interpreter (for Ubuntu) seem to propagate the C++ exceptions.
The template safe_function solves the issue. It will also produce a Lua error whenever the function being wrapped throws an exception. The error message is based on the "what()" method.

Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2013-11-03 14:42:57 -08:00
Leonardo de Moura
1a734979b4 fix(shell/lua): catch lean exceptions in the leanlua frontend 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2013-11-03 13:46:15 -08:00
Leonardo de Moura
6f2183fafe feat(FindLua.cmake): search also for LuaJit 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2013-11-03 13:45:23 -08:00
Leonardo de Moura
9884c056ce feat(lua): allow Lean to be compiled with Lua 5.1 and LuaJit 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2013-11-03 12:40:44 -08:00
Leonardo de Moura
df7dbe17b5 feat(lua/util): remove dependency on luaL_setfuncs 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2013-11-03 12:16:23 -08:00
Leonardo de Moura
e2da8c1f4d feat(lua/numerics): expose mpz and mpq numbers in the Lua bindings 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2013-11-03 12:05:54 -08:00
Soonho Kong
88ebdbcfb6 fix(shell/lua): move "#include<iostream>" 2013-11-03 13:25:33 -05:00
Soonho Kong
a9d55bf036 fix(lua): use updated FindLua and check version 5.2 2013-11-03 13:24:46 -05:00
Soonho Kong
044813615e fix: add '#include <tuple>' 2013-11-03 13:00:42 -05:00
Soonho Kong
0d0d0cd533 chore(cmake): add gmp/mpfr include paths to cmakelists.txt 2013-11-03 13:00:42 -05:00
Leonardo de Moura
ccd95a9b66 fix(lua/name): fix memory leak 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2013-11-02 20:57:41 -07:00
Leonardo de Moura
dbf2d56c77 feat(lua/name): expose hierarchical names in the Lua bindings 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2013-11-02 20:49:42 -07:00
Leonardo de Moura
1b9cf816c4 fix(lua): mark package as optional 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2013-11-02 11:43:23 -07:00
Leonardo de Moura
ac08e244a6 feat(lua): add Lua support to build 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2013-11-02 11:16:30 -07:00
Leonardo de Moura
bf998d8661 feat(frontends/lean/parser): allow 'typeless' definitions, the type is inferred by the system 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2013-11-01 08:51:49 -07:00
Leonardo de Moura
fdea8aba10 feat(frontends/lean/scanner): allow '#' to be used in class B identifiers 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2013-11-01 08:42:25 -07:00
Leonardo de Moura
96dcd003c6 fix(frontends/lean/parser): associated position with 'type' placeholder 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2013-10-31 16:27:36 -07:00
Leonardo de Moura
aa99ac6618 feat(kernel/value): allow semantic attachments to use coercions when being pretty printed 
For example, this feature is useful when displaying the integer value 10 with coercions enabled. In this case, we want to display "nat_to_int 10" instead of "10".

Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2013-10-30 11:42:26 -07:00
Leonardo de Moura
032f5cd7b3 feat(frontends/lean): make the 'expression template' argument in Subst implicit because higher-order matching can infer it. 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2013-10-30 10:45:43 -07:00
Leonardo de Moura
bc92671ae4 fix(frontends/lean/notation): adjust the implicit arguments of TransExt, and add new test 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2013-10-29 17:12:50 -07:00
Leonardo de Moura
7fc87faa8f feat(kernel): heterogeneous transitivity axiom, we need this axiom to be able to generate modular proofs in the rewriting engine module 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2013-10-29 17:07:30 -07:00
Leonardo de Moura
a57ca284ec fix(tests/library/elaborator): replace eq with my_eq because eq is now a builtin symbol 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2013-10-29 17:06:32 -07:00
Leonardo de Moura
4dd6cead83 refactor(equality): make homogeneous equality the default equality 
It was not a good idea to use heterogeneous equality as the default equality in Lean.
It creates the following problems.

- Heterogeneous equality does not propagate constraints in the elaborator.
For example, suppose that l has type (List Int), then the expression
     l = nil
will not propagate the type (List Int) to nil.

- It is easy to write false. For example, suppose x has type Real, and the user
writes x = 0. This is equivalent to false, since 0 has type Nat. The elaborator cannot introduce
the coercion since x = 0 is a type correct expression.

Homogeneous equality does not suffer from the problems above.
We keep heterogeneous equality because it is useful for generating proof terms.

Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2013-10-29 16:20:06 -07:00
Leonardo de Moura
d0009d0242 feat(frontends/lean): make the first argument of if-expression implicit, add support for marking implicit arguments on builtin symbols (aka semantic attachments) 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2013-10-29 15:53:50 -07:00
Leonardo de Moura
2d88922543 feat(frontends/lean/elaborator): solve easy overloads at preprocessing time 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2013-10-29 10:07:15 -07:00
Leonardo de Moura
577ca128a1 fix(library/elaborator): add missing conflict justification 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2013-10-29 03:01:17 -07:00
Leonardo de Moura
521fa1ddb8 style(kernel/metavar): add missing includes 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2013-10-29 03:00:43 -07:00
Leonardo de Moura
7c8daf8974 fix(kernel/metavar): make sure the justification and substitution are always matching each other 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2013-10-29 02:39:52 -07:00
Leonardo de Moura
2c6d4d2225 fix(kernel/normalizer): do not apply substitutions in the normalizer 
It is incorrect to apply substitutions during normalization.
The problem is that we do not have support for tracking justifications in the normalizer. So, substitutions were being silently applied during normalization. Thus, the correctness of the conflict resolution in the elaboration was being affected.

Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2013-10-29 02:14:48 -07:00
Leonardo de Moura
5f11392fcc test(numerics/numeric_traits): add missing test 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2013-10-28 07:50:33 -07:00
Leonardo de Moura
1d18f60dd5 fix(numerics): add missing numeric_traits<float>::zero() 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2013-10-28 07:47:23 -07:00
Leonardo de Moura
b16a64f44b fix(library/elaborator): missing normalization step for semantic attachments 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2013-10-28 07:42:14 -07:00
Leonardo de Moura
4564bfa1d3 feat(library/elaborator): improve simple_ho_match 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2013-10-27 11:17:03 -07:00
Leonardo de Moura
dbefc91151 fix(kernel/metavar): add normalize assignment justification 
We need that when we normalize the assignment in a metavariable environment.
That is, we replace metavariable in a substitution with other assignments.

Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2013-10-27 11:02:34 -07:00
Leonardo de Moura
92f5a31976 feat(kernel/expr): add new mk_app template for creating applications using a collection 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2013-10-27 08:53:58 -07:00
Leonardo de Moura
eaccdcb558 refactor(assumption_justification): move to the kernel 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2013-10-26 14:21:29 -07:00
Leonardo de Moura
4bed9f85b0 feat(kernel/for_each): add option for disabling cache of atomic expressions 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2013-10-25 15:25:17 -07:00
Leonardo de Moura
ce10bfeaf6 perf(kernel/metavar): improve performance of has_assigned_metavar by avoiding for_each+exception 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2013-10-25 15:19:59 -07:00
Leonardo de Moura
57d9d23bd4 feat(kernel/for_each): allow function F to interrupt for_each search 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2013-10-25 14:58:02 -07:00
Leonardo de Moura
2dd44bdf1a perf(kernel/for_each): delay initialization of visited set 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2013-10-25 14:52:08 -07:00
Leonardo de Moura
e765105ea5 fix(frontends/lean/pp): let expressions 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2013-10-25 12:30:39 -07:00
Leonardo de Moura
c3c66b6c90 feat(make): add THREAD_SAFE build option 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2013-10-25 11:50:35 -07:00
Leonardo de Moura
c53d559f7f perf(library/elaborator): improve process_metavar 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2013-10-25 11:19:17 -07:00
Leonardo de Moura
471bbd4040 refactor(kernel/metavar): combine several splay_trees (at metavar_env) into a single one 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2013-10-25 11:02:19 -07:00
Leonardo de Moura
5e34f410b3 refactor(splay_map): modify splay_find signature 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2013-10-25 10:47:15 -07:00
Leonardo de Moura
5812dfcf44 perf(kernel/justification): remove cache from depends_on 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2013-10-25 10:26:05 -07:00
Leonardo de Moura
2b5c951de3 perf(name): add quick_cmp for hierarchical names 
It first compare names using hash codes.

Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2013-10-25 09:58:06 -07:00
Leonardo de Moura
66f4834dbc perf(kernel/metavar): add quick test that catches many cases 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2013-10-25 09:24:01 -07:00
Leonardo de Moura
f38178311c perf(kernel/expr_eq): delay hashtable initialization 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2013-10-25 09:21:47 -07:00
Leonardo de Moura
e0ca27bfb3 fix(tests/library/rewriter): warning 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2013-10-25 08:33:53 -07:00
Leonardo de Moura
412bc792c9 fix(style): missing include 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2013-10-25 08:10:28 -07:00
Leonardo de Moura
0c21f45292 fix(kernel/unification_constraint): memory leak 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2013-10-25 08:06:21 -07:00
Leonardo de Moura
f0e149d77b fix(frontends/lean/pp): fix how Type expressions are pretty printed 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2013-10-24 20:02:34 -07:00
Leonardo de Moura
a5c3829d1b feat(kernel): add unexpected_metavar_occurrence exception 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2013-10-24 19:56:44 -07:00
Leonardo de Moura
83907d7c73 fix(elaborator): max constraints 
elaborator was not handling max constraints where one of the arguments was a Bool. Example:
      ctx |- max(Bool, Type) == ?M

Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2013-10-24 19:27:57 -07:00
Leonardo de Moura
65a514ad8a fix(frontends/lean/parser): option propagation 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2013-10-24 19:04:06 -07:00
Leonardo de Moura
576b4e2169 fix(frontends/lean/pp): missing comma when printing contexts 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2013-10-24 19:00:24 -07:00
Leonardo de Moura
df07a84d11 feat(frontends/lean/parser): display elaborator error messages 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2013-10-24 18:48:53 -07:00
Leonardo de Moura
ca6a6d71e5 fix(kernel/printer): bug when printing let expression 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2013-10-24 18:05:23 -07:00
Leonardo de Moura
e3efe39eeb fix(elaborator): fix bug in higher-order matching/unification 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2013-10-24 17:53:37 -07:00
Leonardo de Moura
d1a2a4ea7e feat(frontends/lean/elaborator): add support for coercions in let declarations 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2013-10-24 17:01:06 -07:00
Leonardo de Moura
872b698bc3 feat(elaborator): add option m_assume_injectivity for getting more concise solutions 
We may miss solutions, but the solutions found are much more readable.
For example, without this option, for elaboration problem

Theorem Example4 (a b c d e : N) (H: (a = b ∧ b = e ∧ b = c) ∨ (a = d ∧ d = c)) : (h a c) = (h c a) :=
    DisjCases H
              (fun H1 : _,
                   let AeqC := Trans (Conjunct1 H1) (Conjunct2 (Conjunct2 H1))
                   in CongrH AeqC (Symm AeqC))
              (fun H1 : _,
                   let AeqC := Trans (Conjunct1 H1) (Conjunct2 H1)
                   in CongrH AeqC (Symm AeqC))

the elaborator generates

Theorem Example4 (a b c d e : N) (H : a = b ∧ b = e ∧ b = c ∨ a = d ∧ d = c) : (h a c) = (h c a) :=
    DisjCases
        H
        (λ H1 : if
               Bool
               (if Bool (a = b) (if Bool (if Bool (if Bool (b = e) (if Bool (b = c) ⊥ ⊤) ⊤) ⊥ ⊤) ⊥ ⊤) ⊤)
               ⊥
               ⊤,
           let AeqC := Trans (Conjunct1 H1) (Conjunct2 (Conjunct2 H1)) in CongrH AeqC (Symm AeqC))
        (λ H1 : if Bool (if Bool (a = d) (if Bool (d = c) ⊥ ⊤) ⊤) ⊥ ⊤,
           let AeqC := Trans (Conjunct1 H1) (Conjunct2 H1) in CongrH AeqC (Symm AeqC))

The solution is correct, but it is not very readable. The problem is that the elaborator expands the definitions of \/ and /\.

Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2013-10-24 16:47:50 -07:00
Leonardo de Moura
d2f9c24d3c fix(tests/lean): adjust tests 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2013-10-24 15:42:17 -07:00
Leonardo de Moura
a7f94b55db fix(frontends/lean/elaborator): fix bugs and adjust tests 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2013-10-24 15:29:56 -07:00
Leonardo de Moura
bbc265ded4 feat(frontends/lean): hook new elaborator in the default frontend 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2013-10-24 15:14:29 -07:00
Leonardo de Moura
c9f7b8bce2 feat(frontends/lean): add get_coercions method 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2013-10-24 14:38:09 -07:00
Leonardo de Moura
71ccec5b9e refactor(frontends/lean/elaborator): delete old_elaborator, and create frontend_elaborator class that will be based on library/elaborator/elaborator 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2013-10-24 10:45:59 -07:00
Leonardo de Moura
449454efdb fix(debug): remove typeid information from assertion, the names are mangled and are not very useful 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2013-10-23 16:41:51 -07:00
Leonardo de Moura
434c33f225 feat(metavar): automatically apply beta-reduction when instantiating metavariable applications (i.e., expressions of the form (?m a)), when the metavariable is a lambda 
This feature is useful for problems that require higher-order matching and/or unification.

Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2013-10-23 16:35:50 -07:00
Leonardo de Moura
873e56844a refactor(beta_reduction): add function apply_beta 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2013-10-23 16:03:52 -07:00
Leonardo de Moura
f1e0d6ec29 refactor(beta_reduction): move beta reduction functions to the kernel, delete reduce.cpp file and tests 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2013-10-23 15:44:26 -07:00
Leonardo de Moura
c1e451151a feat(replace_visitor): add an abstract class for applying transformations on expressions 
I also removed replace_using_ctx since it is subsumed by the new class.

Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2013-10-23 15:01:37 -07:00
Leonardo de Moura
13531b7d3e refactor(kernel): rename trace to justification 
Motivations:

- We have been writing several comments of the form "... trace/justification..." and "this trace object justify ...".
- Avoid confusion with util/trace.h

Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2013-10-23 13:42:17 -07:00
Leonardo de Moura
8e1a75ce1c feat(elaborator): only process upper bound constraints when the corresponding metavariable does not have lower bound and max constraints 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2013-10-23 13:09:13 -07:00
Leonardo de Moura
172567a2fb feat(elaborator): add support for upper bounds, max constraints, and fix bugs 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2013-10-23 12:01:39 -07:00
Leonardo de Moura
17b48010b7 fix(unification_constraint): fix printer for max constraints 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2013-10-23 12:00:29 -07:00
Leonardo de Moura
274b11530f feat(metavar): improve apply_local_context 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2013-10-23 11:59:36 -07:00
Leonardo de Moura
b57f492e2d fix(kernel/printer): improve printer for Type expressions 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2013-10-23 11:58:49 -07:00
Leonardo de Moura
c635c16637 refactor(ho_unifier): remove ho_unifier, it has been subsumed by the elaborator class 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2013-10-22 17:51:54 -07:00
Leonardo de Moura
019f64671b fix(elaborator): add basic support for flex-flex pairs, add more tests, fix bug when enumerating different solutions 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2013-10-22 17:49:37 -07:00
Leonardo de Moura
80a507cf45 refactor(tests/frontends/lean/implicit_args): remove implicit_args unit tests from frontends/lean, all tests were moved to tests/library/elaborator 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2013-10-22 16:42:07 -07:00
Leonardo de Moura
7ad256131e feat(elaborator): add support for constraints of the form ?m[inst, ...] == t, fix bugs, add more tests 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2013-10-22 16:39:22 -07:00
Leonardo de Moura
891d22b3de feat(kernel/context): add method for remove context entries at positions [s, s+n). 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2013-10-22 15:52:24 -07:00
Leonardo de Moura
3fa4eac4ef fix(replace_using_ctx_fn): typo 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2013-10-22 15:46:11 -07:00
Leonardo de Moura
8142726923 fix(type_inferer): bug when inferring the type of free variables 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2013-10-22 15:41:22 -07:00
Leonardo de Moura
874f67c605 feat(normalizer): remove normalization rule t == t ==> true 
This normalization rule is not really a computational rule.
It is essentially encoding the reflexivity axiom as computation.
It can also be abaused. For example, with this rule,
the following definition is valid:

Theorem Th : a = a := Refl b

Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2013-10-22 14:02:48 -07:00
Leonardo de Moura
5e61496381 test(elaborator): add more tests 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2013-10-22 13:45:20 -07:00
Leonardo de Moura
a5b4908f71 fix(elaborator): process_simple_ho_match and missing cases 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2013-10-22 13:45:04 -07:00
Leonardo de Moura
cb2c73cf37 feat(elaborator): add higher-order matching support to elaborator 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2013-10-22 11:22:00 -07:00
Leonardo de Moura
f4592da87f feat(elaborator): solve more unification constraints, add more tests 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2013-10-22 08:15:37 -07:00
Leonardo de Moura
c3e87f106f fix(kernel/trace): fix typo in depends_on 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2013-10-22 08:15:37 -07:00
Leonardo de Moura
dc51d35dc0 feat(library/type_inferer): add support for metavariables at type_inferer 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2013-10-22 08:15:37 -07:00
Leonardo de Moura
7f96c07a01 refactor(library): rename light_checker to type_inferer 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2013-10-22 08:15:36 -07:00
Leonardo de Moura
183f5a1ccf feat(elaborator): solve unification constraints 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2013-10-22 08:15:36 -07:00
Leonardo de Moura
a1710aeeb9 feat(elaborator): add trace objects for elaborator 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2013-10-22 08:15:36 -07:00
Leonardo de Moura
dc0e7a4472 feat(pos_info_provider): add position information provider for expressions 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2013-10-22 08:15:36 -07:00
Leonardo de Moura
8663ac550f feat(kernel/trace): add function depends_on for trace objects 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2013-10-22 08:15:36 -07:00
Leonardo de Moura
42edc4a72d test(set): add set of pointers test 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2013-10-22 08:15:36 -07:00
Leonardo de Moura
b1b49e86e7 test(elaborator): add simple test 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2013-10-22 08:15:36 -07:00
Leonardo de Moura
1548ffabb1 feat(elaborator): add new elaborator interface 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2013-10-22 08:15:36 -07:00
Leonardo de Moura
827c65b5e9 feat(kernel): add static_assert for update_metavar 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2013-10-22 08:15:36 -07:00
Leonardo de Moura
61ccaf741c fix(frontend/lean): minor modification to be able to execute lean frontend while refactoring elaborator 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2013-10-22 08:15:36 -07:00
Leonardo de Moura
7cf83800c0 refactor(metavar): implement metavar_env, and use unification_constraint and trace objects in the type_checker, light_checker 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2013-10-22 08:15:36 -07:00
Leonardo de Moura
1f0eab7a14 test(type_checker): add new tests for type_checker trace objects 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2013-10-22 08:15:36 -07:00
Leonardo de Moura
fc288929a2 feat(type_checker): add trace objects to justify constraints created by the type checker 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2013-10-22 08:15:36 -07:00
Leonardo de Moura
5b1b03bafd refactor(is_convertible): move from normalizer to type_checker class 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2013-10-22 08:15:36 -07:00
Leonardo de Moura
85bfa45e6a refactor(kernel_exception): delete kernel_exception_formatter, and implement kernel_exception pretty printer as a virtual method 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2013-10-22 08:15:36 -07:00
Leonardo de Moura
d843d432d3 refactor(kernel): move printer and formatter objects to the kernel 
The printer and formatter objects are not trusted code.
We moved them to the kernel to be able to provide them as an argument to the trace objects.
Another motivation is to eliminate the kernel_exception_formatter hack.
With the formatter in the kernel, we can implement the pretty printer for kernel exceptions as a virtual method.

Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2013-10-22 08:15:36 -07:00
Leonardo de Moura
ddb90d3038 feat(kernel): add unification_constraint and trace objects to the kernel 
Trace objects will be used to justify steps performed by engines such as the elaborator. We use them to implement non-chronological backtracking in the elaborator. They are also use to justify to the user why something did not work.

The unification constraints are in the kernel because the type checker may create them when type checking a term containing metavariables.

Remark: a minimalistic kernel does not need to include metavariables, unification constraints, nor trace objects. We include these objects in our kernel to minimize code duplication.

Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2013-10-22 08:15:36 -07:00
Leonardo de Moura
e741cc29ef test(metavar): encode two of the bad examples as unit tests 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2013-10-22 08:15:36 -07:00
Leonardo de Moura
59914a36f3 refactor(metavar): reorganize and simplify metavariables 
- Use hierarchical names instead of unsigned integers to identify metavariables.
- Associate type with metavariable.
- Replace metavar_env with substitution.
- Rename meta_ctx --> local_ctx
- Rename meta_entry --> local_entry
- Disable old elaborator
- Rename unification_problems to unification_constraints
- Add metavar_generator
- Fix metavar unit tests
- Modify type checker to use metavar_generator
- Fix placeholder module

Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2013-10-22 08:15:36 -07:00
Leonardo de Moura
3387c300a0 feat(polynomial): add multivariate polynomials 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2013-10-21 18:22:14 -07:00
Leonardo de Moura
93d4466d06 refactor(interval): move interval unit tests to tests/util/interval 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2013-10-21 18:17:34 -07:00
Leonardo de Moura
f18d35555e refactor(interval): organize template source code using the approach described at http://www.codeproject.com/Articles/3515/How-To-Organize-Template-Source-Code 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2013-10-21 18:15:27 -07:00
Leonardo de Moura
e208309abd refactor(numerics): rename power operator to pow, the idea is to follow the C/C++ name convention for the power operator 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2013-10-21 17:23:56 -07:00
Leonardo de Moura
f1d9312521 feat(numerics/zpz): add numeric_traits for zpz numerals 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2013-10-18 14:41:18 -07:00
Leonardo de Moura
1429cc9df2 feat(numerics): add finite field Z/pZ 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2013-10-18 13:27:28 -07:00
Leonardo de Moura
bdade0e638 fix(numerics): problem with gcd tests on OSX 
Now, we only test gcd(a, b) for a != b && a != 0 && b != 0.
When one of these conditions do not hold, the result is implementation dependent.

Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2013-10-17 10:38:02 -07:00
Leonardo de Moura
cf2c0f8ebb feat(numerics): add gcd and extended gcd templates (for primitive types) 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2013-10-16 18:18:20 -07:00
Leonardo de Moura
39f68ed0d6 feat(numerics): add is_prime function 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2013-10-16 17:25:08 -07:00
Leonardo de Moura
1097bbfb22 fix(style): fix warnings produced by cpplint.py, disable sizeof(type) warning 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2013-10-16 17:04:39 -07:00
Leonardo de Moura
105f55c68b feat(numerics): add zero() method to all numeric_traits 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2013-10-16 16:55:17 -07:00
Leonardo de Moura
ff04c5a2e2 test(numerics): add test to make sure that zeros of different precision mpfp numbers are the equal. 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2013-10-16 16:54:43 -07:00