Leonardo de Moura
508bccb0c5
fix(kernel/max_sharing): add example exposing bug in max_sharing_fn, and fix it
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Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2014-04-24 15:55:48 -07:00
Leonardo de Moura
1c8e78e3ae
fix(kernel/justification): typo
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Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2014-04-24 15:08:10 -07:00
Leonardo de Moura
4be4f21de6
fix(kernel/type_checker): bug in quick_is_conv, it was not converting free variables to local constants.
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Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2014-04-24 12:46:31 -07:00
Leonardo de Moura
0d7902f9eb
feat(kernel/type_checker): finish is_convertible predicate
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Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2014-04-23 20:16:14 -07:00
Leonardo de Moura
e78de448aa
feat(kernel/type_checker): add is_convertible predicate (and support for proof irrelevance and eta-reduction)
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Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2014-04-23 19:21:26 -07:00
Leonardo de Moura
cdbef0bf15
fix(kernel/type_checker): is_opaque predicate
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Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2014-04-23 10:51:39 -07:00
Leonardo de Moura
a3554c85fe
fix(kernel/definition): clang compilation warning, and add module_idx typedef
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Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2014-04-23 10:50:55 -07:00
Leonardo de Moura
ed37bf650d
chore(kernel/environment): fix style
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Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2014-04-22 18:34:55 -07:00
Leonardo de Moura
04a61bdffe
feat(kernel/type_checker): remove dead code, add basic whnf procedure
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Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2014-04-22 18:32:50 -07:00
Leonardo de Moura
188da7e4c6
feat(kernel/max_sharing): add method already_processed
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Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2014-04-22 18:30:07 -07:00
Leonardo de Moura
9fda7e2529
fix(kernel): incorrect optimization in max_sharing_fn class
...
The resultant expression may failed to be fully shared.
Add an example that demonstrates the problem.
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2014-04-22 15:38:22 -07:00
Leonardo de Moura
086dd6b1a1
chore(kernel/environment): fix style
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Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2014-04-22 15:36:52 -07:00
Leonardo de Moura
cc1cfba8ad
refactor(kernel/type_checker): new API for type checker
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Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2014-04-21 16:12:47 -07:00
Leonardo de Moura
6417c79569
feat(kernel/environment): add is_descendant method
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Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2014-04-21 14:28:50 -07:00
Leonardo de Moura
bfeb51ce58
feat(kernel/environment): add trust level field
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Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2014-04-21 13:39:47 -07:00
Leonardo de Moura
ee58a83e25
chore(kernel): remove unnecessary files
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Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2014-04-18 14:25:09 -07:00
Leonardo de Moura
d0dc16355b
chore(kernel): remove unnecessary file
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Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2014-04-18 14:23:32 -07:00
Leonardo de Moura
582352d647
refactor(kernel/environment): simplified (functional) environment object
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Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2014-04-18 14:21:49 -07:00
Leonardo de Moura
234abb1238
feat(kernel/definition): default constructor for definitions
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Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2014-04-18 13:10:05 -07:00
Leonardo de Moura
984ac03ac7
refactor(kernel): replace kernel object with definition, disable affected files
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Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2014-04-17 16:10:47 -07:00
Leonardo de Moura
cb479a75ae
fix(kernel/expr): make sure we cannot create a free variable with index uint_max, reason: get_free_var_range would return an incorrect value
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Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2014-04-17 13:25:21 -07:00
Leonardo de Moura
3712da0b54
refactor(kernel/instantiate): use get_free_var_range to improve instantiate, remove instantiate_with_closed, fix index overflow bug
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Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2014-04-17 13:12:49 -07:00
Leonardo de Moura
1fd5e9682d
refactor(kernel/free_vars): use get_free_var_range to improve lift_free_vars and lower_free_vars performance
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Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2014-04-17 12:41:06 -07:00
Leonardo de Moura
4ae958af56
refactor(kernel/free_vars): use get_free_var_range to improve has_free_var_in_range performance
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Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2014-04-17 12:18:19 -07:00
Leonardo de Moura
dc864bf7b9
feat(kernel): store free variable range in composite expressions
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Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2014-04-17 11:31:48 -07:00
Leonardo de Moura
bc8379256a
refactor(kernel): remove pairs from kernel
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Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2014-04-17 10:52:07 -07:00
Leonardo de Moura
fb2ec8fb12
fix(kernel): style
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Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2014-03-18 10:27:57 -07:00
Leonardo de Moura
9b161b825f
refactor(kernel): instantiate_params
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Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2014-03-18 10:27:57 -07:00
Leonardo de Moura
3651b4ecd0
refactor(kernel): replace_fn functional object
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Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2014-03-18 10:27:57 -07:00
Leonardo de Moura
3939b93c2d
refactor(kernel): substitution
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Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2014-03-18 10:27:57 -07:00
Leonardo de Moura
25948ac534
refactor(kernel): cleanup interfaces
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Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2014-03-18 10:27:57 -07:00
Leonardo de Moura
08087ea9c6
refactor(kernel): remove dead code
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Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2014-03-18 10:27:57 -07:00
Leonardo de Moura
eb487e44c1
refactor(kernel): use names instead of unsigned integers to encode level parameters
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Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2014-03-18 10:27:57 -07:00
Leonardo de Moura
ddbb3a7944
refactor(kernel): add error msg formatters, remove unnecessary files, add new type_checker interface
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Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2014-03-18 10:27:57 -07:00
Leonardo de Moura
916301bdfb
refactor(kernel): parametric kernel objects
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Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2014-03-18 10:27:57 -07:00
Leonardo de Moura
54801bbd05
refactor(kernel): constraints
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Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2014-03-18 10:27:57 -07:00
Leonardo de Moura
aa4a7acccf
feat(kernel/level): is_trivial predicate for level constraints
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Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2014-03-18 10:27:57 -07:00
Leonardo de Moura
4b7fe064fe
refactor(kernel): finish formatter interface
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Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2014-03-18 10:27:56 -07:00
Leonardo de Moura
bf13441bd7
fix(kernel): bugs in justification module, add missing metavar methods, add basic metavar tests
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Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2014-03-18 10:27:56 -07:00
Leonardo de Moura
4c30ea9251
fix(kernel/justification): none is the unit of mk_composite
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Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2014-03-18 10:27:56 -07:00
Leonardo de Moura
3c6002e969
refactor(kernel): add mk_rev_app, update_rev_app, implement instantiate_metavars functions, modify instantiate (free vars) API
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Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2014-03-18 10:27:56 -07:00
Leonardo de Moura
42e253c962
fix(*): style and clang warnings
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Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2014-03-18 10:27:56 -07:00
Leonardo de Moura
968c0d799f
refactor(kernel): implement substitution methods
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Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2014-03-18 10:27:56 -07:00
Leonardo de Moura
5f4b1cf47e
feat(kernel): define metavar substitution based on red-black trees
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Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2014-03-18 10:27:56 -07:00
Leonardo de Moura
fdde12e6af
refactor(kernel): remove unnecessary files
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Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2014-03-18 10:27:56 -07:00
Leonardo de Moura
2a73389ed3
refactor(kernel): justification objects
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Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2014-03-18 10:27:56 -07:00
Leonardo de Moura
501435f6fc
feat(kernel): add has_local predicate
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Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2014-03-18 10:27:56 -07:00
Leonardo de Moura
997f32378c
refactor(kernel): remove unnecessary files
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Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2014-03-18 10:27:56 -07:00
Leonardo de Moura
6baa59376c
refactor(kernel): normalizer
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Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2014-03-18 10:27:56 -07:00
Leonardo de Moura
eb046c11fb
refactor(kernel): the type in let-exprs is not optional anymore, if the user does not provide it, we use a metavariable
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Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2014-03-18 10:27:55 -07:00
Leonardo de Moura
410d5cc8ed
fix(kernel): remove unnecessary file
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Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2014-03-18 10:27:55 -07:00
Leonardo de Moura
16aa1ebbac
refactor(kernel): replace_visitor
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Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2014-03-18 10:27:55 -07:00
Leonardo de Moura
101888e079
refactor(kernel): delete update_expr
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Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2014-03-18 10:27:55 -07:00
Leonardo de Moura
b5f0f28009
refactor(kernel): environment, kernel object and exceptions
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Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2014-03-18 10:27:55 -07:00
Leonardo de Moura
737fe6830f
test(tests/kernel): adjust expr tests
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Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2014-03-18 10:27:55 -07:00
Leonardo de Moura
f986963a95
refactor(kernel): serializer and deserializer
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Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2014-03-18 10:27:55 -07:00
Leonardo de Moura
74f74d2f79
refactor(kernel): shallow copy procedure
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Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2014-03-18 10:27:55 -07:00
Leonardo de Moura
5da501d538
fix(kernel): style warnings
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Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2014-03-18 10:27:55 -07:00
Leonardo de Moura
73c8bf4436
refactor(tests/kernel): move tests to new kernel
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Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2014-03-18 10:27:55 -07:00
Leonardo de Moura
565dbe1700
fix(kernel/instantiate): bug in new head_beta_reduce
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Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2014-03-18 10:27:55 -07:00
Leonardo de Moura
d17990ed78
refactor(kernel): add formatter and simplify contexts
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Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2014-03-18 10:27:55 -07:00
Leonardo de Moura
53ee205dc6
fix(kernel): memory corruption bugs
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Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2014-03-18 10:27:55 -07:00
Leonardo de Moura
72e1678ad9
refactor(kernel): cleanup instantiate and abstract procedures, implement update procedures
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Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2014-03-18 10:27:55 -07:00
Leonardo de Moura
db31cc37a1
refactor(kernel/free_vars): cleanup free_vars procedures
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Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2014-03-18 10:27:55 -07:00
Leonardo de Moura
533f44e224
refactor(kernel/expr): for_each_fn, replace_fn, and find_fn without templates
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Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2014-03-18 10:27:55 -07:00
Leonardo de Moura
69b9f2dd37
refactor(kernel/expr): for_each and find functional objects
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Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2014-03-18 10:27:54 -07:00
Leonardo de Moura
23988f528c
refactor(kernel/expr): add expr constructors, and expression equality test
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Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2014-03-18 10:27:54 -07:00
Leonardo de Moura
9d3db8de1f
fix(kernel/diff_cnstrs): missing include
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Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2014-03-18 10:27:54 -07:00
Leonardo de Moura
02413d7c44
refactor(kernel/expr): adding suport for universe polymorphism, and simplify metavariable representation
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Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2014-03-18 10:27:54 -07:00
Leonardo de Moura
13cfd60622
fix(kernel/diff_cnstrs): copyright msg
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Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2014-03-18 10:27:54 -07:00
Leonardo de Moura
76b1ddb967
feat(kernel): add difference constraint solver with backtracking support, and justification generation, this solver will be used to check the satisfiability of universe level constraints
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Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2014-03-18 10:27:54 -07:00
Leonardo de Moura
9f93b5d97e
feat(kernel/level): new universe level datastructure for universe level polymorphism
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Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2014-03-18 10:27:54 -07:00
Leonardo de Moura
1b6b33b3f5
refactor(kernel): start version 0.2, new kernel with universe polymorphism and better/cleaner support for metavariables
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Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2014-03-18 10:27:54 -07:00
Leonardo de Moura
e9dada5e14
refactor(builtin/kernel): use standard definition for 'or' and 'and'
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Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2014-02-17 12:05:34 -08:00
Leonardo de Moura
c526e5ec00
feat(builtin/kernel): prove false_elim without using case
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Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2014-02-15 14:26:13 -08:00
Leonardo de Moura
1739b5c153
fix(kernel/type_checker): caching bug
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Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2014-02-12 10:43:01 -08:00
Leonardo de Moura
368fcb5ff9
refactor(builtin/kernel): rename refute to by_contradiction
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Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2014-02-12 08:49:19 -08:00
Leonardo de Moura
a2d2e36f04
refactor(frontends/lean): remove notation for creating tuples
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Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2014-02-10 09:03:42 -08:00
Leonardo de Moura
c45c1748d8
refactor(builtin/kernel): reorder congr1 arguments
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Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2014-02-09 16:15:44 -08:00
Leonardo de Moura
8df7c7b02d
feat(kernel/type_checker): remove fallback that expands opaque definitions in the type checker
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We should not rely on this feature. It can be quite expensive.
We invoke is_convertible in several places, in particular, if we are using overloading. For example, the frontend uses is_convertible to check which overload should be used. Thus, it will make several calls such as
is_convertible(num, Nat)
If is_convertible starts unfolding opaque definitions, we would keep expanding num.
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2014-02-09 11:31:24 -08:00
Leonardo de Moura
f28c56b188
feat(builtin/num): add auxiliary definitions and theorems for proving the primitive recursion theorem
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Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2014-02-08 19:36:17 -08:00
Leonardo de Moura
24528ff685
fix(library/elaborator): fix glitches in the elaborator that were forcing us to provide parameters explicitly
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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
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Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2014-02-07 16:04:44 -08:00
Leonardo de Moura
ad7b13104f
feat(*): add support for heterogeneous equality in the parser, elaborator and simplifier, adjusts unit test to reflect changes
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Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2014-02-07 15:03:16 -08:00
Leonardo de Moura
6d7ec9d7b6
refactor(kernel): add heterogeneous equality back to expr
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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
30570c843f
feat(builtin): add optional type
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Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2014-02-05 17:33:06 -08:00
Leonardo de Moura
0283887ee9
refactor(builtin/kernel): move the heq axioms into kernel.lean
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Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2014-02-04 14:17:34 -08:00
Leonardo de Moura
9dc86e3cf5
fix(builtin/kernel): rename generalized proof_irrel axiom to hproof_irrel, and derive the restricted one
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Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2014-02-04 10:06:29 -08:00
Leonardo de Moura
9a677331da
feat(builtin): simulate subtypes using sigma types
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Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2014-02-04 01:46:50 -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
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Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2014-02-03 22:10:01 -08:00
Leonardo de Moura
5c991f8fbf
feat(frontends/lean): parse and pretty print tuples/pairs
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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
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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
8eec289ce1
feat(kernel): add dependent pairs
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Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2014-02-03 16:52:49 -08:00
Leonardo de Moura
c56df132b8
refactor(kernel): remove semantic attachments from the kernel
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Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2014-02-02 14:48:27 -08:00
Leonardo de Moura
2aaded261e
fix(kernel/environment): imported predicate
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Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2014-01-30 23:02:19 -08:00
Leonardo de Moura
4d533c6a25
feat(builtin/kernel): add nonempty_range theorem
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Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2014-01-30 22:13:34 -08:00
Leonardo de Moura
ddaf948c72
feat(builtin/kernel): add nonempty_fun theorem
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Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2014-01-30 19:38:51 -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
8c1f6b9055
fix(kernel/typechecker): allow elaborator to infer (Type U+1)
...
In the new test elab8.lean, the parameter B is in (Type U+1).
Before, this commit, the type checker was forcing all metavariables that must be types to be <= (Type U). This restriction was preventing the elaborator from succeeding in reasonable cases.
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2014-01-30 14:00:01 -08:00
Leonardo de Moura
01259b1e84
feat(kernel): make sure U is the maximal universe
...
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2014-01-29 16:31:00 -08:00
Leonardo de Moura
24452289dd
feat(library/simplifier): make sure the simplifier can handle meta-variables
...
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2014-01-28 20:30:47 -08:00
Leonardo de Moura
b6985bd713
feat(builtin/kernel): add another rewrite rule
...
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2014-01-28 15:56:26 -08:00
Leonardo de Moura
55fde28954
feat(kernel/type_checker): optionally provide metavariable environment in the methods: is_definitionally_equal, is_convertible and ensure_pi
...
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2014-01-27 17:47:03 -08:00
Leonardo de Moura
160dc71cb5
refactor(kernel/type_checker): use read-only metavariable environment in methods that do not require write access to the metavariable environment
...
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2014-01-27 17:38:06 -08:00
Leonardo de Moura
05b4d8411b
refactor(kernel/normalizer): normalizer only needs read access to metavariable environment
...
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2014-01-27 17:03:36 -08:00
Leonardo de Moura
3b152d1a9e
refactor(kernel): use ro_metavar_env instead of metavar_env in places where we only need to read the metavariable environment
...
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2014-01-27 16:44:43 -08:00
Leonardo de Moura
b26035fcf6
feat(kernel/type_checker): improve application type mismatch error messages
...
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2014-01-27 09:45:17 -08:00
Leonardo de Moura
ceff335bb8
doc(doc/lean/tutorial): update tutorial
...
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2014-01-26 22:58:44 -08:00
Leonardo de Moura
4d25cb7f47
feat(library/tactic): add simplify_tactic based on the simplifier
...
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2014-01-26 18:53:18 -08:00
Leonardo de Moura
9fb3ccb4c0
feat(library/simplifier): support for dependent simplification in lambda expressions
...
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2014-01-25 16:54:42 -08:00
Leonardo de Moura
2bb33c55fe
feat(builtin/kernel): add more theorems useful for simplification
...
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2014-01-24 18:52:50 -08:00
Leonardo de Moura
26bea77721
fix(library/simplifier): bug in heterogeneous equality support, and universe commutativity support in the simplifier
...
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2014-01-24 17:09:46 -08:00
Leonardo de Moura
dbc100cc2e
feat(library/simplifier): cast elimination in the simplifier
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Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2014-01-23 17:28:14 -08:00
Leonardo de Moura
33193e1ab3
feat(library/simplifier): improve contextual simplifications
...
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2014-01-23 12:54:29 -08:00
Leonardo de Moura
66553268d0
feat(builtin/kernel): add skolem_th, we need it to justify skolemization preprocessing step
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Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2014-01-22 09:41:07 -08:00
Leonardo de Moura
d9b5ebc738
refactor(builtin/kernel): cleanup Hilbert operator definition
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Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2014-01-22 09:18:40 -08:00
Leonardo de Moura
94a3136904
feat(builtin/kernel): add Hilbert's operator, and derive axiom of choice using it
...
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2014-01-22 08:21:11 -08:00
Leonardo de Moura
029d74ec11
chore(kernel): remove comment, we decided to have Eta as a simplification rule
...
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2014-01-21 14:35:05 -08:00
Leonardo de Moura
95b6e61738
feat(kernel/max_sharing): check for imminent stack overflows and interruptions in the expression sharing maximizer
...
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2014-01-21 14:33:49 -08:00
Leonardo de Moura
2089b85532
refactor(kernel/instantiate): remove code duplication
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Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2014-01-21 14:30:38 -08:00
Leonardo de Moura
7299b2d5d6
chore(kernel): remove dead file
...
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2014-01-21 14:21:13 -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
217e56ea03
feat(kernel/expr): make sure semantic attachments are smaller than other kinds of expression
...
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2014-01-20 14:10:44 -08:00
Leonardo de Moura
5060bdbf14
fix(kernel/expr): compilation warning
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Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2014-01-20 13:12:49 -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
69d7ee316f
feat(library/simplifier): improve simplification by evaluation
...
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2014-01-19 23:26:34 -08:00
Leonardo de Moura
6db10c577b
feat(builtin/kernel): add proof irrelevance axiom
...
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2014-01-19 12:20:09 -08:00
Leonardo de Moura
475df3d94e
chore(builtin/kernel): add theorem for rewriter/simplifier
...
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2014-01-19 10:34:18 -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
27ab49ae9d
feat(library/simplifier): bottom-up simplifier skeleton
...
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2014-01-18 12:49:41 -08:00
Leonardo de Moura
5bee259a00
refactor(kernel): remove unnecessary universe
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Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2014-01-16 18:06:25 -08:00
Leonardo de Moura
a43020b31b
refactor(kernel): remove heterogeneous equality
...
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2014-01-16 17:39:12 -08:00
Leonardo de Moura
1da4294793
refactor(builtin): more theorems, fix iff notation
...
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2014-01-16 09:26:50 -08:00
Leonardo de Moura
4dc98bc73b
refactor(builtin/kernel): use iff instead of = for Booleans
...
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2014-01-16 02:05:09 -08:00
Leonardo de Moura
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
7fb0aa4800
chore(kernel/expr): remove dead code
...
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2014-01-15 17:24:31 -08:00
Leonardo de Moura
c096eec1d6
chore(kernel/expr): remove dead code
...
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2014-01-15 17:09:04 -08:00
Leonardo de Moura
8c2f78a756
feat(builtin): minimize use of heterogenous equality in the kernel, add simpler version of congruence theorems for non-dependent types
...
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2014-01-15 16:34:23 -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
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
7c2a4211a8
feat(kernel): expose imported predicate
...
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2014-01-14 16:41:40 -08:00
Leonardo de Moura
07059b0531
feat(library): add if_then_else Lean/C++ interface
...
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2014-01-14 16:10:49 -08:00
Leonardo de Moura
acfb11e290
fix(kernel/instantiate): relax apply_beta pre-condition
...
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2014-01-14 14:36:51 -08:00
Leonardo de Moura
a968a43487
fix(kernel/free_vars): make sure has_free_var does not return incorrect result due to arithmetic overflows
...
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2014-01-14 14:36:14 -08:00
Leonardo de Moura
f8eaae7218
feat(builtin/kernel): add new useful theorems for the simplifier
...
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2014-01-13 18:21:22 -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
e6c322d97f
feat(kernel/free_vars): make free_vars module functions more robust
...
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2014-01-12 17:44:28 -08:00
Leonardo de Moura
5d9a95addd
refactor(kernel/free_vars): replace max_free_var with relaxed free_var_range
...
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2014-01-12 17:06:57 -08:00
Leonardo de Moura
4d9eb4ac6c
feat(kernel): add max_free_var function
...
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2014-01-12 16:45:34 -08:00
Leonardo de Moura
781720a26a
feat(builtin/kernel): add left_comm theorem
...
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2014-01-11 18:08:08 -08:00
Leonardo de Moura
a1a467a65f
refactor(builtin): move congruence theorems to kernel/if_then_else modules
...
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2014-01-11 13:48:28 -08:00
Leonardo de Moura
53537d0684
feat(builtin/kernel): 'implication' simplification theorems
...
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2014-01-11 13:35:20 -08:00
Leonardo de Moura
50f281b430
feat(builtin/kernel): add eqf_intro and eqf_elim theorems
...
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2014-01-11 11:13:54 -08:00
Leonardo de Moura
d4a7d796a5
feat(builtin): prove strong induction theorem, add < theorems
...
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2014-01-10 18:46:33 -08:00
Leonardo de Moura
411f14415d
feat(builtin): automatically generate Lean/C++ interface for builtin theories
...
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2014-01-09 18:09:53 -08:00
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
fdeb457a81
feat(kernel/pos_info_provider): add support for file names in pos_info_provider
...
The idea is to include the file name when displaying justification objects.
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2014-01-09 12:19:30 -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
e42b616438
fix(kernel/normalizer): equality between semantic attachments
...
Given a heterogenous equality: a == b
The normalizer will only reduce it if a and b are objects of the same kind.
Now, 1 == true is not reduced to false anymore.
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2014-01-08 19:10:30 -08:00
Leonardo de Moura
8e9d88c2cf
refactor(builtin/kernel): prove iff::intro, and add a new name for it boolext (Boolean extensionality)
...
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2014-01-08 18:31:45 -08:00
Leonardo de Moura
a4b3d6d6c8
refactor(builtin/kernel): prove eta using function extensionality, and rename abst and abstpi to funext and allext
...
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2014-01-08 17:25:14 -08:00
Leonardo de Moura
2b2aa228e3
refactor(builtin/kernel): start with small universes
...
The universe constraint manager is more flexible now.
We don't need to start with a huge universe U >= 512.
We can start small, and increase it on demand.
If module mod1 needs it, it can always add
universe U >= 3
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2014-01-08 12:35:00 -08:00
Leonardo de Moura
85de05e5cf
chore(kernel/unification_constraint): update max_constraint comment to reflect its new semantics
...
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2014-01-08 01:09:47 -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
d12d0f036f
feat(kernel/environment): universe variables now live in their own namespace
...
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2014-01-07 15:57:36 -08:00
Leonardo de Moura
95515ca5df
chore(*): fix warnings produced by clang++
...
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2014-01-07 15:39:49 -08:00
Leonardo de Moura
29db6accb8
test(tests/lean): new tests for exercising the environment object
...
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2014-01-07 14:34:21 -08:00
Leonardo de Moura
0a20356a51
fix(kernel/environment): we should not add an universe contraint object to the set of object when an integer overflow occurs
...
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2014-01-07 13:43:22 -08:00
Leonardo de Moura
17c4cce89c
fix(library/elaborator): remove_detail procedure was keeping a lot of details when typeof_mvar_justification was being used
...
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2014-01-07 13:24:46 -08:00
Leonardo de Moura
4424a314e0
feat(kernel): add get_universe_distance method
...
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2014-01-06 17:13:13 -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
b5a30855f8
feat(kernel/universe_constraints): add new class for managing universe constraints
...
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2014-01-06 15:01:28 -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
9eb4dc4a81
feat(kernel, library/elaborator, frontends/lean): improve how elaborator_exceptions are displayed in the Lean frontend
...
This commit affects different modules.
I used the following approach:
1- I store the metavariable environment at unification_failure_justifications. The idea is to capture the set of instantiated metavariables at the time of failure.
2- I added a remove_detail function. It removes propagation steps from the justification tree object. I also remove the backtracking search space associated with higher-order unificiation. I keep only the search related to case-splits due to coercions and overloads.
3- I use the metavariable environment captured at step 1 when pretty printing the justification of an elaborator_exception.
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2014-01-03 17:18:23 -08:00
Leonardo de Moura
92c7145d7f
feat(kernel/expr): maximize sharing before serializing
...
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2014-01-02 20:03:42 -08:00
Leonardo de Moura
9620b00e24
feat(kernel/metavar): is instantiate_metavars, we are also instantiating assigned metavariables that occur in the local context of unassinged ones.
...
This modification improves the effectiveness of the process_metavar_inst procedure in the Lean elaborator.
For example, suppose we have the constraint
ctx |- ?M1[inst:0 ?M2] == a
If ?M1 and ?M2 are unassigned, then we have to consider the two possible solutions:
?M1 == a
or
?M1 == #0 and ?M2 == a
On the other hand, if ?M2 is assigned to b, then we can ignore the second case.
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2014-01-02 16:08:38 -08:00
Leonardo de Moura
ecc5d1bc3a
refactor(kernel): move printer to library, cleanup io_state interface
...
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2014-01-02 13:37:50 -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
b81d3309b9
fix(kernel): remove ios hack
...
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2014-01-02 13:03:25 -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
74cae2a154
refactor(library/elaborator): remove hackish rule
...
After the recent fixes, the hack in process_metavar is not needed anymore.
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2014-01-01 10:55:39 -08:00
Leonardo de Moura
cbd1f98365
fix(library/elaborator): bug at method process_metavar_inst, add new test that exposed the bug
...
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2014-01-01 03:02:41 -08:00
Leonardo de Moura
0d815b8594
refactor(kernel/context): hide that the context is implemented using lists
...
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2013-12-31 19:43:50 -08:00
Leonardo de Moura
1cb7408c46
fix(kernel/normalizer): metavariable reification was incorrect, add tst11 at tests/kernel/normalizer.cpp to expose the bug
...
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2013-12-31 16:24:36 -08:00
Leonardo de Moura
cd3bbb1ebf
fix(kernel/builtin): enforcing design decision: semantic attachments are NOT simplifiers, they should do only evaluation
...
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2013-12-31 10:14:17 -08:00
Leonardo de Moura
c485b4bc4c
fix(kernel/environment): binary file reader, force the file to be read in binary mode
...
We need this flag to be able to read the file on Windows.
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2013-12-30 18:20:40 -08:00
Leonardo de Moura
1f6e959139
feat(deserializer): protect against corrupted binary files
...
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2013-12-30 18:05:38 -08:00
Leonardo de Moura
a80fccea93
chore(*): cleanup builtin registration
...
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2013-12-30 12:19:00 -08:00
Leonardo de Moura
2a2f0b0d89
refactor(kernel/builtin): move helper decl macros to a separate file
...
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2013-12-30 11:51:30 -08:00
Leonardo de Moura
ecd62a1783
refactor(builtin/basic): rename basic.lean to kernel.lean
...
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2013-12-30 11:46:03 -08:00
Leonardo de Moura
72761f14e4
refactor(library/io_state): move to the kernel
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Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2013-12-30 11:20:23 -08:00
Leonardo de Moura
097b10e424
refactor(kernel/builtin): move builtin declarations to basic
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There is a lot to be done. We should do the same for Nat, Int and Real.
We also should cleanup the file builtin.cpp and builtin.h.
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2013-12-29 22:00:03 -08:00
Leonardo de Moura
37e8738a5f
refactor(kernel/expr): value deserializer
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Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2013-12-29 20:47:14 -08:00
Leonardo de Moura
de77851a00
refactor(util/object_serializer): add methods write_core and read_core that allows to pack information in the byte used to indicate whether an object is already in the cache or not
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Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2013-12-29 19:59:53 -08:00
Leonardo de Moura
dbd122301a
feat(kernel/object): compact object serialization kind ids
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Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2013-12-29 19:19:24 -08:00
Leonardo de Moura
d0fdc3619b
feat(kernel/expr): compress application serialization
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Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2013-12-29 19:11:57 -08:00
Leonardo de Moura
14c3e11289
refactor(kernel/builtin): emove mk_bin_rop and mk_bin_lop to library
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Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2013-12-29 15:23:18 -08:00
Leonardo de Moura
92404c511c
refactor(kernel/builtin): Bool type does not need to be a semantic attachment
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Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2013-12-29 15:12:08 -08:00
Leonardo de Moura
dfe46b9d25
refactor(kernel/builtin): move definition and axioms to basic.lean
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Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2013-12-29 14:01:30 -08:00
Leonardo de Moura
1b300d3598
chore(kernel/builtin): remove unnecessary functions
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Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2013-12-29 12:55:51 -08:00
Leonardo de Moura
df3686634d
refactor(kernel/builtin): remove unnecessary predicates
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Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2013-12-29 12:20:29 -08:00
Leonardo de Moura
9fdf2a3f55
feat(kernel): add trust_imported flag, it skips type checking of 'pre-compiled' Lean modules
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"Pre-compiled" .olean files were already type checked. The flag -t instructs to Lean to skip
type checking when importing these files.
TODO: add a check-sum.
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2013-12-29 03:43:53 -08:00
Leonardo de Moura
411ebbc3c1
refactor(library/basic_thms): move the proof of all basic theorems to a .Lean file
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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
5e0b344871
fix(kernel/object): uninitialized variable
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Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2013-12-28 21:57:56 -08:00
Leonardo de Moura
41c1010043
feat(frontends/lean/parser): make Import command use binary Lean files
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Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2013-12-28 19:20:04 -08:00
Leonardo de Moura
aee1c6d3f3
feat(kernel): export/import (.olean) binary files
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Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2013-12-28 17:31:35 -08:00
Leonardo de Moura
22bebbf242
feat(kernel/object): serializer for kernel objects
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Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2013-12-28 14:39:10 -08:00
Leonardo de Moura
755e8b735f
feat(kernel/expr): serializer for kernel expressions
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Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2013-12-28 01:23:21 -08:00
Leonardo de Moura
0ef8ba2939
feat(kernel/level): serializer for level objects
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Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2013-12-27 23:30:13 -08:00
Leonardo de Moura
8cf65f354b
fix(frontends/lean/pp): forall and exists pretty printing when used as constants
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Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2013-12-27 12:50:41 -08:00
Leonardo de Moura
2aa691ccb3
fix(kernel/replace_fn): ignore the cached type in constants
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Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2013-12-24 21:11:25 -08:00
Leonardo de Moura
1a0f0c1609
feat(kernel/normalizer): let normalizer ignore 'undefined' constants
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Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2013-12-24 20:54:15 -08:00
Leonardo de Moura
6cc57cc4b5
fix(library/tactic/apply_tactic): bug in apply_tac
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Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2013-12-24 15:54:56 -08:00
Leonardo de Moura
cb95b14332
feat(library/tactic/apply_tactic): improve apply_tactic
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Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2013-12-24 14:23:06 -08:00
Soonho Kong
de018220e1
feat(*): use std::make_shared to create shared_ptr
2013-12-24 14:32:50 -05:00
Leonardo de Moura
b83b17d3ab
fix(kernel/metavar): bug at cached_metavar_env::update method
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Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2013-12-23 15:41:02 -08:00
Leonardo de Moura
3e32d9bef2
feat(library/tactic): add support for Pi's at to_proof_state
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Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2013-12-22 16:40:55 -08:00
Leonardo de Moura
4229e498d2
refactor(kernel/type_checker): combine type_checker and type_inferer into a single class, and avoid code duplication
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Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2013-12-22 11:51:38 -08:00
Leonardo de Moura
9128a437b8
refactor(library/cast): replace cast semantic attachment with axioms, add heterogeneous symmetry axiom
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Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2013-12-21 18:23:37 -08:00
Leonardo de Moura
90dbdaec40
feat(kernel/expr): cache is_arrow result
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Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2013-12-21 13:59:45 -08:00
Leonardo de Moura
1faf42e2e1
chore(kernel/expr): remove unnecessary #if-#then-#else
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Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2013-12-21 13:36:41 -08:00
Leonardo de Moura
7b0b363b32
fix(kernel/normalizer): metavariable reification
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Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2013-12-21 06:40:26 -08:00
Leonardo de Moura
84df182beb
refactor(kernel/instantiate): remove hackish (dead) function
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Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2013-12-20 14:37:05 -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
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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
026f666526
feat(kernel/type_checker): use expression before normalization in the unification constraints generated by the typechecker
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Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2013-12-20 11:22:13 -08:00
Leonardo de Moura
4838c055b8
feat(kernel/environment): add set_opaque method
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Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2013-12-20 10:45:44 -08:00
Leonardo de Moura
46627289b8
fix(kernel/expr): avoid '_' as a binder name, we use '_' as a placeholder in the Lean frontend
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Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2013-12-19 14:47:53 -08:00
Leonardo de Moura
6cc83dbe2a
fix(kernel/kernel_exception): incorrect pp method
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Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2013-12-19 14:46:22 -08:00
Leonardo de Moura
47c7bb1bde
refactor(*): uses aliases for unordered_map and unordered_set
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Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2013-12-18 12:30:45 -08:00
Leonardo de Moura
1e4fa76a47
feat(util/name_map): add template alias
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Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2013-12-18 11:34:40 -08:00
Leonardo de Moura
7b2fea3fab
fix(kernel/normalizer): compilation problem with clang++
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Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2013-12-18 08:46:36 -08:00
Leonardo de Moura
418623b874
feat(kernel/replace_fn): add template replace that captures commonly used pattern
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Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2013-12-17 18:31:59 -08:00
Leonardo de Moura
23e518001a
feat(kernel/normalizer): avoid unnecessary creation of closures for n-ary functions
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Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2013-12-17 18:10:13 -08:00
Leonardo de Moura
10f28c7bec
feat(kernel/replace_fn): non-recursive replace_fn
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Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2013-12-17 16:35:39 -08:00
Leonardo de Moura
af4a6c9364
fix(kernel/normalizer): cache problems
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Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2013-12-17 14:52:14 -08:00
Leonardo de Moura
33789fad4c
fix(kernel/builtin): make sure the if-then-else semantic attachment is not a simplifier
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Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2013-12-17 14:34:40 -08:00
Leonardo de Moura
c53233ea26
fix(kernel/normalizer): avoid svalue hack, use 'semantic attachments' for implementing closures, include context in the closure
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Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2013-12-17 14:33:42 -08:00
Leonardo de Moura
836357c65c
fix(kernel/normalizer): bug in Let normalization
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Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2013-12-17 12:35:25 -08:00
Leonardo de Moura
84bfe2a222
fix(library/elaborator): bug in process_meta_app
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Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2013-12-17 10:56:20 -08:00
Leonardo de Moura
f09fd0fc04
feat(kernel/printer): include de Bruijn index in the debug printer
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Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2013-12-16 16:56:46 -08:00
Leonardo de Moura
af42078205
fix(kernel): incorrect use of scoped_map
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This commit also adds a new test that exposes the problem.
The scoped_map should not be used for caching values in the normalizer and type_checker. When we extend the context, the meaning of all variables is modified (we are essentially performing a lift). So, the values stored in the cache are not correct in the new context.
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2013-12-16 15:11:39 -08:00
Leonardo de Moura
02ee31b786
feat(kernel/normalizer): provide the metavar_env to instantiate and add_inst in the normalizer, it will minimize the number of local_entries needed
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Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2013-12-14 15:41:50 -08:00
Leonardo de Moura
3d30664611
feat(kernel/type_checker): provide the metavar_env to instantiate, it will minimize the number of local_entries needed
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Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2013-12-14 15:13:56 -08:00
Leonardo de Moura
4357c9196e
feat(kernel/metavar): make sure that a metavariable 'm' can only be assigned to a term that contains free variables available in the context associated with 'm'
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This commit also simplifies the method check_pi in the type_checker and type_inferer.
It also fixes process_meta_app in the elaborator.
The problem was in the method process_meta_app and process_meta_inst.
They were processing convertability constrains as equality constraints.
For example, process_meta_app would handle
ctx |- Type << ?f b
as
ctx |- Type =:= ?f b
This is not correct because a ?f that returns (Type U) for b satisfies the first but not the second.
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2013-12-14 12:25:00 -08:00
Leonardo de Moura
51aee83b70
refactor(kernel/metavar_env): use the same approach used in the class environment in the class metavar_env
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This modification was motivated by a bug exposed by tst17 at tests/kernel/type_checker.
metavar_env is now a smart point to metavar_env_cell.
ro_metavar_env is a read-only smart pointer. It is useful to make sure we are using proof_state correctly.
example showing that the approach for caching metavar_env is broken in the type_checker
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2013-12-13 18:59:15 -08:00
Leonardo de Moura
2e5e5e187f
chore(util/rc): remove unnecessary argument from LEAN_COPY_REF and LEAN_MOVE_REF macros
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Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2013-12-13 15:01:24 -08:00
Leonardo de Moura
fa8b984e27
fix(kernel/environment): compilation warnings
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Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2013-12-13 13:54:45 -08:00
Leonardo de Moura
ae52c8062e
chore(kernel/metavar): remove unused function
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Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2013-12-12 17:39:14 -08:00
Leonardo de Moura
450d6a4b1e
refactor(util/splay_tree): replace find with splay_find
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Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2013-12-12 17:27:30 -08:00
Leonardo de Moura
f97c260b0b
refactor(kernel/environment): add ro_environment
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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
7b2cbd6926
chore(kernel/environment): remove implementation hack
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Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2013-12-12 16:48:34 -08:00
Leonardo de Moura
3457fe5935
chore(kernel): rename read_only_environment and read_write_environment
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Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2013-12-12 16:48:33 -08:00
Leonardo de Moura
1852c86948
feat(kernel): improve instantiate and lift_free_vars (use metavar_env to minimize the number of lift and inst local_entries needed)
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Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2013-12-12 16:48:33 -08:00
Leonardo de Moura
058bdb88ac
feat(kernel/context): add operator== for contexts, and new constructor
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Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2013-12-12 16:48:33 -08:00
Leonardo de Moura
38a25a1bd2
feat(kernel/metavar): (re-)enable add_lift simplification
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Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2013-12-12 16:48:33 -08:00
Leonardo de Moura
98f5ce0512
fix(kernel/context): unused var warning in release mode
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Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2013-12-11 21:24:05 -08:00
Leonardo de Moura
3e77dd0c42
fix(kernel/context): make context remove more robust
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Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2013-12-11 19:51:57 -08:00
Leonardo de Moura
c29b155fdd
feat(library/elaborator): use improved has_free_vars in the elaborator
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Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2013-12-11 16:15:20 -08:00
Leonardo de Moura
0e2b7973cf
feat(kernel/free_vars): improve has_free_vars function, it produces better results for expressions containing metavariables
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Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2013-12-11 16:09:33 -08:00
Leonardo de Moura
af1b0d2e81
feat(library): add function free_var_range for computing the range [0, R) of free variables occurring in an expression
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Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2013-12-11 15:32:50 -08:00
Leonardo de Moura
55389cf6e5
feat(kernel/context): add find, a version of lookup that does not throw an exception
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Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2013-12-11 09:54:54 -08:00
Leonardo de Moura
4de5f06a97
fix(library/elaborator): bug in process_metavar_inst, and disable simplification that is negatively impacting the elaborator
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Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2013-12-10 19:26:58 -08:00
Leonardo de Moura
8f2fe273ea
refactor(*): isolate std::thread dependency
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This commit allows us to build Lean without the pthread dependency.
It is also useful if we want to implement multi-threading on top of Boost.
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2013-12-09 15:20:26 -08:00
Leonardo de Moura
25a2f5f7e0
fix(kernel/formatter): clang++ errors and warnings
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Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2013-12-08 18:54:04 -08:00
Leonardo de Moura
445d4f6793
refactor(kernel/unification_constraint): remove 'null' unification_constraint and its operator bool
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Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2013-12-08 18:11:35 -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
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Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2013-12-08 16:55:55 -08:00
Leonardo de Moura
759fcb7b4f
refactor(kernel/formatter): hide 'unsafe' constructor
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Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2013-12-08 15:39:26 -08:00
Leonardo de Moura
a4afdfeace
refactor(kernel/expr): remove the dangerous expr::release method
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Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2013-12-08 14:45:18 -08:00
Leonardo de Moura
04b67f8b14
refactor(kernel/object): remove 'null' object, and operator bool for kernel objects
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Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2013-12-08 14:37:38 -08:00
Leonardo de Moura
2f88d6710c
feat(kernel/expr): add some_expr and none_expr for building values of type optional<expr>
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Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2013-12-08 10:34:38 -08:00
Leonardo de Moura
25b812f1c9
feat(kernel/expr): no overhead optional<expr> template specialization
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Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2013-12-08 10:17:29 -08:00
Leonardo de Moura
3e1fd06903
refactor(kernel/expr): remove 'null' expression, and operator bool for expression
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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
b6b520302d
feat(kernel/replace_visitor): relax replace_visitor contract, the input expression can be null
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Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2013-12-07 15:35:26 -08:00
Leonardo de Moura
e2999d3ff6
feat(*): add component name to check_stack and check_system
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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
33b72f1dd0
feat(frontends/lean/parser): apply type inference elaborator to fill remaining metavariables/holes (these are holes produced by tactics such as apply_tac)
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Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2013-12-07 13:09:39 -08:00
Leonardo de Moura
195ea24d71
refactor(kernel/type_checker): pass buffer<unification_constraint> as a pointer
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The idea is to make it an optional parameter independent of metavar_env.
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2013-12-07 10:27:11 -08:00
Leonardo de Moura
872434e632
fix(kernel/has_free_vars): return false for null expression
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Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2013-12-06 16:01:57 -08:00
Leonardo de Moura
147626c906
fix(kernel/printer): memory access violation when printing contexts
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Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2013-12-06 15:50:29 -08:00
Leonardo de Moura
0390f3c39b
feat(library/tactic/boolean_tactics): avoid unnecessary Let expression in proof terms
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Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2013-12-06 15:01:54 -08:00
Leonardo de Moura
d79a626523
fix(kernel/type_checker): Pi with metavariables case
...
The type checker (and type inferer) were not handling correctly Pi expressions where the type universe cannot be established due to the occurrence of metavariables. In this case, a max-constraint is created. The problem is that the domain and body of the Pi are in different contexts. The constrain generated before this commit was incorrect, it could contain a free variable. This commit fix the issue by using the context of the body, and lifting the free variables in the domain by 1.
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2013-12-06 13:07:59 -08:00
Leonardo de Moura
c841763a05
feat(library/elaborator): add special treatment for constraints of the form ?m[inst:i v] << t, where t is a proposition
...
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2013-12-06 04:51:07 -08:00
Leonardo de Moura
c1afefb873
feat(library/fo_unify): unify heterogeneous - homogeneous equality
...
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2013-12-05 19:00:31 -08:00
Leonardo de Moura
873a07d34c
feat(kernel/replace_visitor): check interrupted flag and stackoverflow
...
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2013-12-05 05:42:12 -08:00
Leonardo de Moura
029ef57abd
feat(library/tactic): add apply_tactic
...
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2013-12-05 03:22:12 -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
74dfdd02de
feat(util): add primitives for checking the amount of available stack space
...
Recursive functions that may go very deep should invoke the function check_stack. It throws an exception if the amount of stack space is limited.
The function check_system() is syntax sugar for
check_interrupted();
check_stack();
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2013-12-01 17:19:27 -08:00
Leonardo de Moura
1ec8f9d536
feat(kernel): add abstraction (aka function extensionality) axiom
...
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2013-12-01 13:57:14 -08:00
Leonardo de Moura
a9eb2a9307
feat(kernel/builtin): add is_* functions
...
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2013-11-29 11:35:58 -08:00
Leonardo de Moura
dae86c2ffa
feat(frontends/lean/parser): add basic tactic support in the frontend
...
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2013-11-28 21:08:12 -08:00
Leonardo de Moura
3a93212d5e
chore(kernel/expr): fix cpplint warning
...
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2013-11-27 12:59:16 -08:00
Leonardo de Moura
d87ad9eb7e
refactor(util/lua): propagate C++ Lean exceptions in Lua
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The following call sequence is possible:
C++ -> Lua -> C++ -> Lua -> C++
The first block of C++ is the Lean main function.
The main function invokes the Lua interpreter.
The Lua interpreter invokes a C++ Lean API.
Then the Lean API invokes a callback implemented in Lua.
The Lua callback invokes another Lean API.
Now, suppose the Lean API throws an exception.
We want the C++ exception to propagate over the mixed C++/Lua call stack.
We use the clone/rethrow exception idiom to achieve this goal.
Before this commit, the C++ exceptions were converted into strings
using the method what(), and then they were propagated over the Lua
stack using lua_error. A lua_error was then converted into a lua_exception when going back to C++.
This solution was very unsatisfactory, since all C++ exceptions were being converted into a lua_exception, and consequently the structure of the exception was being lost.
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2013-11-27 12:25:29 -08:00
Leonardo de Moura
956f203a55
refactor(bindings/lua): move Lua bindings to the file associated with them
...
The directory bindings/lua was getting too big and had too many dependencies.
Moreover, it was getting too painful to edit/maintain two different places.
Now, the bindings for module X are in the directory that defines X.
For example, the bindings for util/name.cpp are located at util/name.cpp.
The only exception is the kernel. We do not want to inflate the kernel
with Lua bindings. The bindings for the kernel classes are located
at bindings/kernel_bindings.
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2013-11-26 19:15:56 -08:00
Leonardo de Moura
b41789d085
feat(kernel): add is_bool predicate
...
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2013-11-26 11:34:50 -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
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
be8fe1b902
fix(kernel/replace): make it more robust, and add clear method
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Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2013-11-20 13:19:21 -08:00
Leonardo de Moura
6989f1f9ba
refactor(kernel/metavar): remove unnecessary variable
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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
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
e0c23e5984
fix(kernel/environment): compilation problem on Windows
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Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2013-11-18 09:52:47 -08:00
Leonardo de Moura
1315378ebb
test(*): add missing tests
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Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2013-11-18 09:13:34 -08:00
Leonardo de Moura
69be5f6c94
feat(kernel/environment): track which modules were already imported
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Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2013-11-17 18:15:44 -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
4ebb3c572a
feat(kernel/environment): make the environment throw an exception when weak-ref has expired
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Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2013-11-16 18:35:17 -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
8525e8534b
feat(lua): expose parse_expr and parse_commands from frontends/lean in the Lua API
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Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2013-11-15 16:11:26 -08:00
Leonardo de Moura
691893258d
feat(kernel/expr): add hash code based on allocation time
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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
ad1180c5b4
fix(kernel/occurs): typos
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Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2013-11-13 17:04:56 -08:00
Leonardo de Moura
9a22702383
feat(lua): make objects() and localobjects() methods return iterators in the environment LUA API
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Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2013-11-13 14:26:01 -08:00
Leonardo de Moura
ba0889265e
refactor(lua): cleanup Lua bindings
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Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2013-11-13 13:55:05 -08:00
Leonardo de Moura
c4c548dc5d
feat(*): simplify interrupt propagation
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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
ac6c18321a
fix(lua): make sure environment objects can be safely accessed/updated from current threads
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Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2013-11-11 20:29:53 -08:00
Leonardo de Moura
31abc00db8
chore(*): add LCOV_EXCL_LINE to lean_unreachable statements
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Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2013-11-11 09:19:38 -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
3078923ea4
fix(kernel/type_checker): add missing test, and kernel_exception has_no_type_exception
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Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2013-11-10 11:14:04 -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
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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
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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
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
044813615e
fix: add '#include <tuple>'
2013-11-03 13:00:42 -05:00
Leonardo de Moura
aa99ac6618
feat(kernel/value): allow semantic attachments to use coercions when being pretty printed
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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
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
4dd6cead83
refactor(equality): make homogeneous equality the default equality
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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
521fa1ddb8
style(kernel/metavar): add missing includes
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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
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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
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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
dbefc91151
fix(kernel/metavar): add normalize assignment justification
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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
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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
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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
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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
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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
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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
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Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2013-10-25 14:52:08 -07:00
Leonardo de Moura
c3c66b6c90
feat(make): add THREAD_SAFE build option
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Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2013-10-25 11:50:35 -07:00
Leonardo de Moura
471bbd4040
refactor(kernel/metavar): combine several splay_trees (at metavar_env) into a single one
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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
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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
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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
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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
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
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
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
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
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
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
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
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
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
c3e87f106f
fix(kernel/trace): fix typo in depends_on
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Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2013-10-22 08:15:37 -07:00
Leonardo de Moura
183f5a1ccf
feat(elaborator): solve unification constraints
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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
0783805671
feat(kernel): add weight to kernel definitions
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Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2013-10-15 14:50:08 -07:00
Leonardo de Moura
aa5be3262f
fix(type_checker): fix inconsistent cache bug in type_checker, add tests that expose the problem
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Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2013-10-01 19:23:55 -07:00
Soonho Kong
e3b762e909
feat(kernel): add static_assert to expr,expr_eq,replace
2013-10-01 16:47:36 -07:00
Soonho Kong
a832173f5f
feat(kernel/expr): add expr::operator() which takes 8 args
2013-10-01 00:19:30 -07:00
Leonardo de Moura
e5d312dc18
fix(kernel): the hash code of expressions was not being used to compare them
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Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2013-09-26 08:41:20 -07:00
Leonardo de Moura
98b4e09063
refactor(kernel): simplify expr_eq
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Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2013-09-25 22:09:08 -07:00
Leonardo de Moura
6477708d78
refactor(debug): improve lean_unreachable(), now we can avoid 'fake' return statements
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Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2013-09-25 21:27:20 -07:00
Leonardo de Moura
9f0dab1add
fix(kernel): add declarations for operator<<(std::ostream&, expr const&) and operator<<(std::ostream&, context const&) in the kernel
...
The actual implementation of these two operators is outside of the
kernel. They are implemented in the file 'library/printer.cpp'.
We declare them in the kernel to prevent the following problem.
Suppose there is a file 'foo.cpp' that does not include
'library/printer.h', but contains
expr a;
...
std::cout << a << "\n";
...
The compiler does not generate an error message. It silently uses the
operator bool() to coerce the expression into a Boolean. This produces
counter-intuitive behavior, and may confuse developers.
2013-09-25 17:45:54 -07:00
Leonardo de Moura
ba0528c298
Implement total order on expressions
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Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2013-09-24 12:16:32 -07:00
Leonardo de Moura
46d6c41835
Fix bug in the type checker (when type checking terms with meta-variables).
...
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2013-09-22 19:12:19 -07:00
Leonardo de Moura
1647e44510
Fix memory corruption bug
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Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2013-09-22 18:53:58 -07:00
Leonardo de Moura
16a6a54df1
Fix abuse of operator-> overload
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Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2013-09-22 16:41:51 -07:00
Leonardo de Moura
c847d27763
Improve higher order unification
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Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2013-09-21 00:41:49 -07:00
Leonardo de Moura
651c5d6751
Fix warnings and bugs related to unused variables.
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Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2013-09-19 22:41:07 -07:00
Soonho Kong
ab6ca82e6f
Update to suppress unused-parameter warnings
2013-09-19 22:40:34 -07:00
Leonardo de Moura
80a1b96925
Remove duplicate solutions in the higher order matching module. Simplify solutions when higher-order matching is used, and we don't have a residue.
...
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2013-09-19 18:59:28 -07:00
Leonardo de Moura
2f29ff70d7
Implement higher-order unification
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Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2013-09-18 20:46:00 -07:00
Leonardo de Moura
ad901ce087
Use consistent naming conventions
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Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2013-09-17 14:43:07 -07:00
Leonardo de Moura
3df6149daa
Add support for metavariables in the type checker.
...
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2013-09-17 11:09:59 -07:00
Leonardo de Moura
9f9dcf9a29
Fix bug in the creation of children environments. Remove unnecessary function.
...
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2013-09-17 07:37:33 -07:00
Leonardo de Moura
30b19c314a
Add basic support for metavariables at is_convertible. Swap is_convertible arguments to make it more intuitive.
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Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2013-09-17 07:15:47 -07:00
Leonardo de Moura
a26c7d47f2
Add simplification to add_lift
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Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2013-09-17 03:14:02 -07:00
Leonardo de Moura
99e8d2feae
Add simplification rule to add_inst
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Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2013-09-17 02:57:28 -07:00
Leonardo de Moura
21c7a45f67
Relax definition of identity_stack. Fix printer for metavariable contexts.
...
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2013-09-17 02:09:45 -07:00
Leonardo de Moura
d3bce584f4
Add support for new metavariable representation in the normalizer.
...
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2013-09-17 01:57:21 -07:00
Leonardo de Moura
da09e7217a
Cleanup meta_entry code
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Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2013-09-16 19:32:28 -07:00
Leonardo de Moura
99a163f11d
Simplify metavariable context. Now, we have only 'lift' and 'inst' instead of 'subst', 'lift' and 'lower'
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Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2013-09-16 19:32:28 -07:00
Leonardo de Moura
cad562a448
Add support for metavariables in the normalizer.
...
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2013-09-16 19:32:28 -07:00
Leonardo de Moura
1be2a30c8c
Fix bug in normalizer. We must create a scope whenever we extend the value stack.
...
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2013-09-16 19:32:28 -07:00
Leonardo de Moura
f79f046294
Add partial support for metavariables in the normalizer
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Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2013-09-15 21:23:50 -07:00
Leonardo de Moura
2800292947
Add timestamp to metavar_env
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Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2013-09-15 19:50:48 -07:00
Leonardo de Moura
5a4bc331d2
Make unification_problems a virtual class. Associate a 'standard' context with each metavariable in metavar_env
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Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2013-09-15 19:38:36 -07:00
Leonardo de Moura
63e102055e
Move metavariables to the kernel. This is the first step for implementing the new elaborator.
...
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2013-09-15 12:09:01 -07:00
Soonho Kong
bc60b47295
Apply coding style
2013-09-13 18:48:09 -07:00
Leonardo de Moura
bcc3827a99
Modify Doxygen file to extract all elements even the undocumented ones. Disable warnings for undocumented entities. Add extra comments.
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Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2013-09-13 13:46:22 -07:00
Leonardo de Moura
d54834279e
Use consistent coding style for if-then-else
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Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2013-09-13 12:57:40 -07:00
Leonardo de Moura
8c735f1daa
Use consistent coding style for spaces after ','
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Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2013-09-13 12:49:03 -07:00
Leonardo de Moura
2c68117adf
Tag TODOs
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Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2013-09-13 12:25:21 -07:00
Leonardo de Moura
0c09e4524a
Use consistent names for import functions, and library files.
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Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2013-09-13 08:58:34 -07:00
Soonho Kong
5c3866cd71
Use fullpath in #include directives, add missing STL headers
2013-09-13 03:35:29 -07:00
Leonardo de Moura
26097475fd
Use fullpath in #include directives.
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Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2013-09-12 20:04:10 -07:00
Leonardo de Moura
572c7ced2a
Add #include<atomic> to expr.h. We need it when #define LEAN_THREAD_UNSAFE_REF_COUNT is used
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Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2013-09-11 19:48:55 -07:00
Leonardo de Moura
33c4b44b2b
Encapsulate context implementation. The current implementantion based on lists may be a performance problem in the future, and we should be able to change it without affecting the whole code base.
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Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2013-09-07 11:15:11 -07:00
Leonardo de Moura
bab11b57ad
Move Symm and Trans back to basic_thms.cpp
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Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2013-09-06 23:49:35 -07:00
Leonardo de Moura
c674bb3790
Add castlib as an independent library
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Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2013-09-06 23:40:47 -07:00
Leonardo de Moura
7a9d53d0d7
Refactor arith libraries
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Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2013-09-06 23:19:47 -07:00
Leonardo de Moura
b92bbeb83b
Add casting propagation and normalization
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Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2013-09-06 20:45:26 -07:00
Leonardo de Moura
c0c2f52087
Add Cast, DomInj and RanInj. Improve operator << for lean_frontend objects.
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Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2013-09-06 18:32:15 -07:00
Leonardo de Moura
8840b37258
Fix type checker and elaborator for let expressions. Fix get_coercions (we need to pass the context). Fix pretty printer for def_type_mismatch_exception.
...
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2013-09-06 11:02:00 -07:00
Leonardo de Moura
2459c4ae7c
Add (optional) type to let declarations
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Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2013-09-06 10:06:26 -07:00
Leonardo de Moura
87d3961158
Improve elaborator error messages
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Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2013-09-04 16:36:58 -07:00
Leonardo de Moura
be7fa0932a
Add unicode name for the types: Nat, Int and Real
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Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2013-09-04 09:03:41 -07:00
Leonardo de Moura
d41160f8a5
Modify environment. Now, when a builtin value is declared, if it has a unicode alternative representation, then we add it as a definition. Now, everything that occurs in the environment has been 'declared'.
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Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2013-09-04 08:53:00 -07:00
Leonardo de Moura
e955c054ca
Modify type checker. Now, it only accepts builtin values that have been declared in the environment. The idea is to be able to track which classes of builtin values have been used in a given environment. We want to be able to quantify the size of the trusted code base for a particular development.
...
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2013-09-04 08:30:04 -07:00
Leonardo de Moura
887f696f66
Factor duplicate code. Add more comments
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Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2013-09-03 23:27:58 -07:00
Leonardo de Moura
fc9e395818
Define absolute value function and notation for it. Add new example.
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Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2013-09-03 20:39:54 -07:00
Leonardo de Moura
3992c4b8f9
Define divides, and add examples
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Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2013-09-03 20:18:20 -07:00
Leonardo de Moura
544229e5d3
Create pp::unicode option. The idea is to be able to disable unicode characters, but still be able to use mixfix notation.
...
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2013-09-03 10:11:45 -07:00
Leonardo de Moura
e031d7bc10
Improve error messages when overloads+coercions do not work
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Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2013-09-02 20:05:47 -07:00
Leonardo de Moura
fd44ec8d79
Improve application type mismatch error messages
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Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2013-09-02 18:28:12 -07:00
Leonardo de Moura
72188691de
Add hyperbolic functions
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Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2013-09-02 17:28:43 -07:00
Leonardo de Moura
4eaba93591
Add trigonometric functions
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Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2013-09-02 17:03:02 -07:00
Leonardo de Moura
395513258e
Define mod and unary minus
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Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2013-09-02 16:31:44 -07:00
Leonardo de Moura
b483d0dc45
Replace Int::sub and Real::sub with definitions
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Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2013-09-02 16:31:30 -07:00
Leonardo de Moura
abc939382b
Add Real arithmetic. Fix elaborator for coercions. Now, two overloads are considered ambiguous if they need the same number of coercions. Improve pretty printer for nest infix operators with same precedence and associativity.
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Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2013-09-02 13:20:00 -07:00
Leonardo de Moura
0a67679afb
Add natural numbers. Fix how coercions and overloads interact (switch to approach used in C++). Add notation for natural and integer arithmetic. Rename m and u universe variables to M and U.
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Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2013-09-02 12:24:29 -07:00
Leonardo de Moura
7acf438bf4
Metavariables will not be part of the kernel
...
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2013-09-02 09:36:04 -07:00
Leonardo de Moura
990f428a81
Remove virtual method kind from value class and subclasses. We can use dynamic_cast to achieve the same goal
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Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2013-09-02 09:35:10 -07:00
Leonardo de Moura
81d0203ee0
Replace macros TypeM, TypeU, Int, Bool, True and False with constant global expressions. The macros were producing counterintuitive behavior. For example, we had an enumeration type with an element called Int.
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Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2013-09-02 09:11:53 -07:00
Leonardo de Moura
db88920f81
Rename normalize and type_check to normalizer and type_checker (using a consistent naming convention)
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Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2013-09-02 08:43:38 -07:00
Leonardo de Moura
42be7a4989
Add coercion declarations
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Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2013-09-01 18:11:28 -07:00