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177 commits

Author SHA1 Message Date
Leonardo de Moura
eef1cc4ac2 fix(frontends/lean/pp): implicit arguments in notation 2014-10-19 09:04:43 -07:00
Leonardo de Moura
555d26aa61 feat(frontends/lean/pp): take notation declarations into account when pretty printing 
TODO: support foldl/foldr and binders
 2014-10-19 08:41:29 -07:00
Leonardo de Moura
a26618e0f2 feat(frontends/lean): add '[]' notation for marking arguments where class-instance resolution should be applied 2014-10-12 13:06:00 -07:00
Leonardo de Moura
f863d82e69 fix(frontends/lean/pp): pp was not taking into account new namespace name resolution rules, fixes #216 2014-10-01 11:24:45 -07:00
Leonardo de Moura
6bf905aea8 fix(frontends/lean/pp): do not invoke type checker on expressions 
containing free variables.

This could happened when the pretty printer was used from Lua to print
nested subterms
 2014-09-26 09:38:36 -07:00
Leonardo de Moura
da481c3274 refactor(kernel): explicit initialization/finalization 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-09-24 10:12:28 -07:00
Leonardo de Moura
29d6bff785 refactor(frontends/lean): explicit initialization/finalization 2014-09-23 10:00:36 -07:00
Leonardo de Moura
8fe7465ade fix(frontends/lean/pp): when formatting a coercion to function-class 
that contains implicit arguments
 2014-09-20 09:56:46 -07:00
Leonardo de Moura
970ad72bc3 fix(frontends/lean/pp): protect pretty printer from exceptions 2014-09-18 16:21:20 -07:00
Leonardo de Moura
2d94584816 feat(frontends/lean/pp): add 'pp.beta' option, closes #154 2014-09-09 14:10:20 -07:00
Leonardo de Moura
ee196bbf1a fix(frontends/lean/pp): pretty printing coercions to functions, fixes #151 2014-09-09 12:49:32 -07:00
Leonardo de Moura
4088cdc139 chore(frontend/lean/pp_options): use consistent name convention for pp option names 2014-09-09 09:27:26 -07:00
Leonardo de Moura
b4793df653 feat(frontends/lean): rename '[fact]' to '[visible]' 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-09-08 07:47:42 -07:00
Leonardo de Moura
40cd50b1ca fix(frontends/lean/pp): add necessary '@' when pp.implicit is true, otherwise produced output will not even type check 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-09-02 17:11:26 -07:00
Leonardo de Moura
fc0f12101c fix(frontends/lean/pp): bug when pretty printing arrows 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-09-02 15:55:14 -07:00
Leonardo de Moura
b9489ce585 fix(frontends/let): let-expression pretty printer 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-08-29 10:58:27 -07:00
Leonardo de Moura
d8548369e7 feat(frontends/lean/pp): improve let-expr pretty printer 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-08-29 07:46:58 -07:00
Leonardo de Moura
2ce92feae1 fix(frontends/lean/pp): remove unreachable code: elaborator eliminates typed_expr macros 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-08-28 18:30:33 -07:00
Leonardo de Moura
be56fcf0bd fix(frontends/lean/pp): pretty print 'let-expressions', closes #87 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-08-28 18:20:58 -07:00
Leonardo de Moura
1e80a9dfe9 feat(frontends/lean): avoid exponential blowup when processing let-expressions with a lot of sharing, cleanup show-expression 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-08-28 16:27:52 -07:00
Leonardo de Moura
fbf13994d8 refactor(*): use + for concatenating format objects 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-08-24 09:35:25 -07:00
Leonardo de Moura
01000ff7df feat(library): add typed_expr macro 
We use it to enforce that a let-variable has the expected type

Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-08-22 11:26:06 -07:00
Leonardo de Moura
d4ac482d76 refactor(kernel): move annotation to library 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-08-22 10:38:10 -07:00
Leonardo de Moura
b746492ac8 refactor(library/simple_formatter): rename simple_formatter to print 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-08-22 10:32:08 -07:00
Leonardo de Moura
7d987df429 refactor(kernel/formatter): move simple_formatter to library 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-08-22 10:26:45 -07:00
Leonardo de Moura
9588336c15 refactor(kernel/type_checker): remove "global" constraint buffer from type_checker, and use constraint_seq instead 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-08-20 16:46:19 -07:00
Leonardo de Moura
28b7d87f1f feat(frontends/lean/pp): pretty print numerals 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-08-14 09:12:22 -07:00
Leonardo de Moura
955d7d2659 fix(library/aliases): namespace and constant have the same name, and 'using' produces the 'empty' alias 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-08-07 08:32:21 -07:00
Leonardo de Moura
ba98634a7a feat(frontends/lean/pp): do not display metavariable arguments by default, add option pp.metavar_args to control whether they are displayed or not 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-07-31 16:46:16 -07:00
Leonardo de Moura
6e135832d8 feat(frontends/lean/pp): pretty print '@' explict operator 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-07-29 14:26:27 -07:00
Leonardo de Moura
864fdd37da refactor(library/aliases): aliases are from name to names 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-07-27 21:01:59 -07:00
Leonardo de Moura
83d38674c9 feat(kernel/error_msgs): improve cryptic type mismatch error messages where the types may seem identical because key information is being suppressed 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-07-27 09:41:25 -07:00
Leonardo de Moura
0cdd4a267c feat(frontends/lean/pp): pretty print 'show' expressions 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-07-26 21:56:35 -07:00
Leonardo de Moura
60cc9ac8e2 feat(frontends/lean/pp): pretty print 'have' expressions 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-07-26 21:35:26 -07:00
Leonardo de Moura
cf35c07786 fix(frontends/lean): fix 'let' annotation placement and pretty printer 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-07-26 21:00:22 -07:00
Leonardo de Moura
811f46e97b feat(frontends/lean/pp): add option for displaying internal names associated with private declarations 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-07-25 11:03:54 -07:00
Leonardo de Moura
0c668a31fe fix(frontends/lean/pp): display private 'internal' names in a human readable way 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-07-25 10:58:13 -07:00
Leonardo de Moura
022a151cf7 feat(kernel): add general purpose 'annotations', they are just a generalization of the 'let'-annotations 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-07-25 09:33:31 -07:00
Leonardo de Moura
736b219e65 fix(frontends/lean/elaborator): pretty print placeholders as '_' 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-07-25 08:46:03 -07:00
Leonardo de Moura
e7c7d5718a fix(frontends/lean/pp): fix bug in the pretty printer 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-07-25 08:30:30 -07:00
Leonardo de Moura
5eaf04518b refactor(*): rename Bool to Prop 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-07-22 09:43:18 -07:00
Leonardo de Moura
b62abf0f06 refactor(library/tactic/goal): remove redundance, goal pp method was duplicating some of the functionality provided by the pretty printer 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-07-10 18:59:03 +01:00
Leonardo de Moura
405e57eb2d refactor(kernel/formatter): add formatter_factory, and simplify formatter interface 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-07-10 18:32:00 +01:00
Leonardo de Moura
c13c75b93e feat(frontends/lean/pp): add option for displaying fully qualified names 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-07-10 15:55:19 +01:00
Leonardo de Moura
49bc3fffbd fix(frontends/lean/pp): purify procedure for local names 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-07-10 14:13:51 +01:00
Leonardo de Moura
aff766430d fix(frontends/lean/pp): universe pretty printer 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-07-09 19:17:28 -07:00
Leonardo de Moura
43eba857cb feat(frontends/lean): add let-expr pretty printer, reduce default indentation to 2 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-07-09 18:47:10 -07:00
Leonardo de Moura
d31cde473e fix(util/sexpr): nested Lua objects 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-07-09 11:13:17 -07:00
Leonardo de Moura
2ef7b9be2f feat(frontends/lean): add basic pretty printer 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-07-09 01:12:36 -07:00
Leonardo de Moura
c6af56260e refactor(frontends/lean): remove dead code 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-05-15 15:51:41 -07:00
Leonardo de Moura
a2d2e36f04 refactor(frontends/lean): remove notation for creating tuples 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-02-10 09:03:42 -08:00
Leonardo de Moura
24528ff685 fix(library/elaborator): fix glitches in the elaborator that were forcing us to provide parameters explicitly 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-02-07 18:02:08 -08:00
Leonardo de Moura
1ec01f5757 refactor(builtin): merge pair.lean with kernel.lean, and add basic theorems 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-02-07 16:04:44 -08:00
Leonardo de Moura
6d7ec9d7b6 refactor(kernel): add heterogeneous equality back to expr 
The main motivation is that we will be able to move equalities between universes.

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

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

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

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

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

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

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

   H1 : A == B

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

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

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

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

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

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

     (∀ x, B x) == (∀ x, B' x)

is syntax sugar for

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

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

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

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

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

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

Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-02-07 10:28:10 -08:00
Leonardo de Moura
ea06bb2885 feat(frontends/lean/pp): change how lift local entries are pretty printed 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-02-06 17:26:38 -08:00
Leonardo de Moura
493007b7bc fix(frontends/lean/pp): bug in tuple/pair pretty printing 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-02-04 13:58:01 -08:00
Leonardo de Moura
4fcc292332 feat(frontends/lean): parse and pretty print pair/tuple projection operators proj1 and proj2, fix bug in the type checker 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-02-03 22:10:01 -08:00
Leonardo de Moura
cc96b50644 feat(frontends/lean): support for nary-tuples, improve notation for non-dependent tuples, add support in the elaborator for sigma types 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-02-03 20:53:11 -08:00
Leonardo de Moura
5c991f8fbf feat(frontends/lean): parse and pretty print tuples/pairs 
This commit also fixes a bug in the type checker when processing dependent pairs.

Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-02-03 20:10:30 -08:00
Leonardo de Moura
5e5ab1429d feat(frontends/lean): parse and pretty print sigma types 
This commit also fixes some bugs in the implementation of Sigma types.

Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-02-03 18:16:00 -08:00
Leonardo de Moura
c56df132b8 refactor(kernel): remove semantic attachments from the kernel 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-02-02 14:48:27 -08:00
Leonardo de Moura
f0a2d3627e refactor(frontends/lean): use ascii prefix for auxiliary let-declarations 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-01-29 11:58:09 -08:00
Leonardo de Moura
1638a7bb02 fix(frontends/lean/pp): compute local shared nodes, and avoid unnecessary let's 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-01-22 21:44:24 -08:00
Leonardo de Moura
90ffb9d5ec fix(frontends/lean/pp): bug in pp_abstraction_core 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-01-19 19:47:40 -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
14c6218bdc chore(kernel): file name convention 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-01-15 20:06:29 -08:00
Leonardo de Moura
12451e4a35 feat(frontends/lean/pp): display implicit arguments when expression contains metavariables 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-01-13 12:42:05 -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
2179e57db3 refactor(builtin): move if_then_else to its own module 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-01-09 14:08:39 -08:00
Leonardo de Moura
048151487e feat(kernel): use Pi as forall/implication 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-01-08 00:38:39 -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
0592261847 refactor(kernel/io_state): move io_state_stream to library 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-01-02 13:14:21 -08:00
Leonardo de Moura
43909ca66b feat(frontends/lean/pp): pretty print SetOpaque command 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2014-01-01 13:16:44 -08:00
Leonardo de Moura
15621610e9 refactor(library/arith): replace Nat, Int, Real with simple variable decls instead of semantic attachments 
This commit also fixes bugs in the Alias command.

Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2013-12-29 17:04:36 -08:00
Leonardo de Moura
a1a5fb101d feat(frontends/lean): add Alias command 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2013-12-29 16:25:45 -08:00
Leonardo de Moura
411ebbc3c1 refactor(library/basic_thms): move the proof of all basic theorems to a .Lean file 
This commit also adds several new theorems that are useful for implementing the simplifier.
TODO: perhaps we should remove the declarations at basic_thms.h?

Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2013-12-29 03:04:49 -08:00
Leonardo de Moura
aee1c6d3f3 feat(kernel): export/import (.olean) binary files 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2013-12-28 17:31:35 -08:00
Leonardo de Moura
8cf65f354b fix(frontends/lean/pp): forall and exists pretty printing when used as constants 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2013-12-27 12:50:41 -08:00
Leonardo de Moura
a02c6e70fa fix(frontends/lean/pp): missing parenthesis around nested forall/exists 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2013-12-27 12:13:36 -08:00
Leonardo de Moura
3673f2ac1d feat(frontends/lean/parser): add Find command 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2013-12-25 18:31:52 -08:00
Leonardo de Moura
ce84fe5d33 feat(frontends/lean): improve error messages when elaborator cannot instantiate all metavariables 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2013-12-20 22:00:50 -08:00
Leonardo de Moura
f43db96e1f fix(frontends/lean/pp): pretty printer for Type 
Add parenthesis around Type when it has a universe.

Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2013-12-19 15:24:45 -08:00
Leonardo de Moura
bff5a6bfb2 fix(frontends/lean/pp): make sure pp and parser are using the same precedences 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2013-12-19 12:46:14 -08:00
Leonardo de Moura
97b872a05c refactor(frontends/lean): remove frontend class, it is not needed anymore 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2013-12-18 14:37:55 -08:00
Leonardo de Moura
418623b874 feat(kernel/replace_fn): add template replace that captures commonly used pattern 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2013-12-17 18:31:59 -08:00
Leonardo de Moura
f97c260b0b refactor(kernel/environment): add ro_environment 
The environment object is a "smart-pointer".
Before this commit, the use of "const &" for environment objects was broken.
For example, suppose we have a function f that should not modify the input environment.
Before this commit, its signature would be
       void f(environment const & env)
This is broken, f's implementation can easilty convert it to a read-write pointer by using
the copy constructor.
       environment rw_env(env);
Now, f can use rw_env to update env.

To fix this issue, we now have ro_environment. It is a shared *const* pointer.
We can convert an environment into a ro_environment, but not the other way around.

ro_environment can also be seen as a form of documentation.
For example, now it is clear that type_inferer is not updating the environment, since its constructor takes a ro_environment.

Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2013-12-12 16:48:34 -08:00
Leonardo de Moura
bbaa83e16a feat(frontends/lean): implement relaxed operator compatibility in the parser 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2013-12-10 15:42:43 -08:00
Leonardo de Moura
abe2cf2fb5 feat(frontends/lean): simplify how implicit parameters are marked 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2013-12-10 12:11:04 -08:00
Leonardo de Moura
78ec4b152b feat(frontends/lean): relax restricitions on parsing applications of functions containing implicit arguments 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2013-12-10 09:48:24 -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
340d643d89 fix(library/kernel_bindings): make sure that when a formatter is invoked and it has a reference to an environment object, we get a read-only lock to the environment object 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2013-12-08 16:55:55 -08:00
Leonardo de Moura
da613f67a8 refactor(frontends/lean/pp): replace dangerous frontend reference with a weak_ref to the environment 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2013-12-08 16:42:12 -08:00
Leonardo de Moura
759fcb7b4f refactor(kernel/formatter): hide 'unsafe' constructor 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2013-12-08 15:39:26 -08:00
Leonardo de Moura
2f88d6710c feat(kernel/expr): add some_expr and none_expr for building values of type optional<expr> 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2013-12-08 10:34:38 -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
e2999d3ff6 feat(*): add component name to check_stack and check_system 
I also reduced the stack size to 8 Mb in the tests at tests/lean and tests/lean/slow. The idea is to simulate stackoverflow conditions.

Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2013-12-07 15:11:55 -08:00
Leonardo de Moura
bcc8b67592 chore(*): consistent file name convention 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2013-12-03 12:40:52 -08:00
Leonardo de Moura
f80106a895 chore(*): use 'explicit operator bool' everywhere. 
operator bool() may produce unwanted conversions.
For example, we had the following bug in the code base.

...
   object const & obj = find_object(const_name(n));
   if (obj && obj.is_builtin() && obj.get_name() == n)
...

obj.get_name() has type lean::name
n              has type lean::expr

Both have 'operator bool()', then the compiler uses the operator to
convert them to Boolean, and then compare the result.
Of course, this is not our intention.

After this commit, the compiler correctly signs the error.
The correct code is

...
   object const & obj = find_object(const_name(n));
   if (obj && obj.is_builtin() && obj.get_name() == const_name(n))
...

Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2013-12-02 23:02:45 -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