Leonardo de Moura
2a00647089
refactor(library/tactic): cleanup 'revert' and 'clear' tactics
2014-11-26 17:08:14 -08:00
Leonardo de Moura
e55397d422
feat(library/tactic): add 'clears' and 'reverts' variants
2014-11-26 14:49:48 -08:00
Leonardo de Moura
2bd8f969d5
feat(library/tactic): add 'revert' tactic, closes #346
2014-11-26 14:23:42 -08:00
Leonardo de Moura
c28e9b9234
feat(library/tactic): add 'clear' tactic, closes #341
2014-11-26 13:11:36 -08:00
Leonardo de Moura
df51ba8b7c
feat(library/definitional/projection): use strict implicit inference, closes #344
2014-11-25 18:04:06 -08:00
Leonardo de Moura
ef75cac1c0
feat(kernel/expr): change the rules for inferring implicit arguments, closes #344
2014-11-25 12:54:07 -08:00
Leonardo de Moura
a005c8f4d0
feat(frontends/lean): display eval/check/find_decl results using flycheck
2014-11-24 08:35:49 -08:00
Leonardo de Moura
f1e915a188
feat(frontends/lean): add 'find_decl' command
2014-11-23 23:00:59 -08:00
Leonardo de Moura
8c8bf41e39
feat(frontends/lean/server): do not unfold definitions in FINDG
2014-11-23 19:03:39 -08:00
Leonardo de Moura
13fba433b0
feat(library/tactic/generalize): add 'generalizes' syntax sugar, closes #327
2014-11-23 17:30:22 -08:00
Leonardo de Moura
28c63e685b
feat(frontends/lean): add '[local]' notation, closes #322
2014-11-16 21:15:04 -08:00
Leonardo de Moura
00df34a1c4
feat(library/unifier): generalize method process_succ_eq_max_core
2014-11-14 14:25:41 -08:00
Leonardo de Moura
51719145f9
feat(library/unifier): solved universe constraints of the form succ^k1 a = max k2 ?m (when k1 >= k2)
2014-11-12 17:28:33 -08:00
Leonardo de Moura
6bc89f0916
feat(library/definitional): define ibelow and below
...
These are helper definitions for brec_on and binduction_on
2014-11-12 16:38:46 -08:00
Leonardo de Moura
b07b82cf43
fix(library/definitional): marking cases_on and rec_on as reducible
...
The idea is to avoid counter-intuitive behavior
2014-11-12 15:03:30 -08:00
Leonardo de Moura
858538a329
refactor(library/definitional): add new to_telescope procedure, and remove code duplication in no_confusion.cpp
2014-11-12 13:31:31 -08:00
Leonardo de Moura
b4c37d180b
refactor(library/definitional): add some helper functions
2014-11-12 12:24:22 -08:00
Leonardo de Moura
e2bfe6ee36
refactor(library/definitional/no_confusion): cleanup API
2014-11-11 16:12:44 -08:00
Leonardo de Moura
f6889951c6
fix(library/definitional/cases_on): bug in inductive datatypes with higher-order recursion
2014-11-11 15:14:08 -08:00
Leonardo de Moura
902a551048
feat(definitional/brec_on): add 'mk_below' skeleton
2014-11-11 14:55:21 -08:00
Leonardo de Moura
5fbf9ee964
refactor(library/definitional/util): remove code duplication
2014-11-11 13:53:41 -08:00
Leonardo de Moura
1079d6b320
refactor(library/definitional): combine auxiliary functions used by definitional package in a single module
2014-11-11 13:46:36 -08:00
Leonardo de Moura
b4be96c980
feat(library/definitional/util): add is_inductive_predicate auxiliary predicate
2014-11-11 13:32:56 -08:00
Leonardo de Moura
4fd1ee7619
feat(library/definitional/util): add is_recursive_datatype
auxiliary function
2014-11-11 12:26:26 -08:00
Leonardo de Moura
363d4a7577
fix(library/definitional/no_confusion): assertion violation
2014-11-10 10:32:03 -08:00
Leonardo de Moura
e8bc0f8249
feat(library/defitional): add no_confusion construction for inductive datatypes that are not propositions
2014-11-08 18:56:52 -08:00
Leonardo de Moura
b5da143fc0
feat(library/defitional): add no_confusion_type construction for inductive datatypes that are not propositions
2014-11-08 15:20:19 -08:00
Leonardo de Moura
edd94c00df
fix(library/definitional): add missing files
2014-11-03 18:36:25 -08:00
Leonardo de Moura
c306bfa83c
feat(frontends/lean/structure_cmd): add 'eta' theorem for structures
2014-11-03 18:33:44 -08:00
Leonardo de Moura
c7406d6ce8
fix(library/scoped_ext): bug when declaring nested namespaces
2014-11-02 15:35:49 -08:00
Leonardo de Moura
df008dc3c3
feat(frontends/lean/inductive_cmd): create a namespace for each declared datatype
2014-11-01 19:15:46 -07:00
Leonardo de Moura
aaad9a3c43
feat(library/definitional/projection): add option for marking main premise as instance implicit (i.e., []
binder decorator)
2014-10-31 19:01:32 -07:00
Leonardo de Moura
84b516994c
fix(library/tactic): type check generalization result, fixes #273
2014-10-29 20:34:01 -07:00
Leonardo de Moura
61f333d2c2
chore(library/tactic/expr_to_tactic): fix compilation warning
2014-10-29 19:47:47 -07:00
Leonardo de Moura
9547e2d077
feat(library/tactic): add rotate_left/rotate_right tactics, closes #278
2014-10-29 19:13:55 -07:00
Leonardo de Moura
8e9f97e95e
fix(frontends/lean): do not save identifier info
2014-10-29 17:38:59 -07:00
Leonardo de Moura
95e843e8ed
feat(library/tactic/proof_state): add empty line between goals, closes #281
2014-10-29 16:51:06 -07:00
Leonardo de Moura
88d55bfef0
fix(library/definitional/projection): remove redundant 'error in'
2014-10-29 16:51:06 -07:00
Leonardo de Moura
30571ce418
fix(library/definitional/projection): error messages for projection generation
2014-10-29 13:39:17 -07:00
Leonardo de Moura
fe4ea48381
feat(library/definitional/projection): add projection generator, closes #257
2014-10-29 13:13:05 -07:00
Leonardo de Moura
0c185fc4ab
fix(library/tactic): add relax_main_opaque flag to proof_state objects, closes #274
2014-10-29 08:57:34 -07:00
Leonardo de Moura
e22eb3543c
feat(library/tactic): add whnf tactic, closes #270
2014-10-28 23:18:49 -07:00
Leonardo de Moura
83e4c0fcec
feat(frontends/lean): hide tactic "types"
...
it is not very useful to display the type of tactics (e.g., apply,
intros, ...)
2014-10-28 22:38:10 -07:00
Leonardo de Moura
1c2bbcfebc
feat(frontends/lean/info_manager): add separator --
when displaying PROOF_STATE info
...
This feature was implemented to address issue #259
2014-10-28 16:39:21 -07:00
Leonardo de Moura
186e598bf8
feat(library/tactic/goal): add option pp.compact_goals
2014-10-28 16:30:37 -07:00
Leonardo de Moura
a3801e84d4
fix(library/tactic/goal): avoid unnecessary line break when possible
2014-10-28 16:17:33 -07:00
Leonardo de Moura
ea739100b3
fix(library/unifier): broken optimization in the unifier
...
See new comments and tests for details.
2014-10-28 16:09:41 -07:00
Leonardo de Moura
78bc3ef7e4
feat(library/unifier): improve FailLocal/FailCircular failures in the unifier by using normalization
...
This improvements was marked as TODO, and was preventing us from
elaborating the example in the new test vector3.lean
2014-10-27 16:49:29 -07:00
Leonardo de Moura
bca2be56ec
feat(library/normalize): add new flavors of normalize procedure
2014-10-27 16:25:30 -07:00
Leonardo de Moura
fd60cf6a79
feat(library/tactic/exact_tactic): modify 'exact' tactic semantics, use higher-order unification
...
See new node.inj4 theorem, we need the extra power to be able to avoid type information at
exact (assume e₁ e₂, e₁)
2014-10-26 10:27:33 -07:00
Leonardo de Moura
c7f6a6b94e
feat(library/definitional/cases_on): automatically add 'cases_on'
2014-10-25 17:22:02 -07:00
Leonardo de Moura
c751bdd9e6
chore(library/definitional): remove dead code
2014-10-25 15:11:48 -07:00
Leonardo de Moura
fa1bf40d0f
fix(library/definitional): make sure argument is an inductive datatype
2014-10-25 15:09:24 -07:00
Leonardo de Moura
cdcde661ef
feat(library/definitional/induction_on): automatically add 'induction_on'
2014-10-25 13:37:04 -07:00
Leonardo de Moura
a7a06ab0f8
feat(library/definitional/rec_on): automatically generate rec_on function for inductive datatypes
2014-10-25 13:08:59 -07:00
Leonardo de Moura
096c67b2e5
fix(library/unifier): occurs-check bug
2014-10-25 00:16:02 -07:00
Leonardo de Moura
aaad9633fb
fix(library/tactic/expr_to_tactic): memory leak
2014-10-24 14:40:36 -07:00
Leonardo de Moura
79d0347721
feat(library/tactic): add generalize tactic, closes #34
...
Remark: the intros tactic has been added in a different commit: 7d0100a340
2014-10-23 22:40:15 -07:00
Leonardo de Moura
b83b065d00
feat(library/tactic/apply_tactic): modify heuristic for adding arguments to apply tactic.
2014-10-23 22:36:32 -07:00
Leonardo de Moura
f9aa1a1b84
refactor(library/tactic/goal): remove unnecessary parameter
2014-10-23 21:22:52 -07:00
Leonardo de Moura
43cfd5c26a
fix(library/tactic): add missing file
2014-10-23 14:04:12 -07:00
Leonardo de Moura
e750c9b67a
feat(frontends/lean): add 'info' tactic for producing PROOF_STATE info for emacs mode
2014-10-23 13:18:30 -07:00
Leonardo de Moura
8e3ac023bb
feat(library/reducible): expose 'memoize' flag
2014-10-23 13:09:59 -07:00
Leonardo de Moura
38a9aa2a98
feat(frontends/lean): automatically open 'tactic' namespace (if it is not already open) in 'by' and 'begin-end' expressions
2014-10-23 10:26:19 -07:00
Leonardo de Moura
00f9a10e82
refactor(library/tactic/unfold_tactic): use new 'tactic.expr' to implement 'unfold' tactic
...
This change also enabled us to remove hacks used in the tests modified
by this commit.
2014-10-23 10:26:19 -07:00
Leonardo de Moura
6fcba192b2
refactor(library/tactic): move 'unfold' tactic to separate module
2014-10-23 10:26:19 -07:00
Leonardo de Moura
96d7d9c8d9
feat(library/tactic/elaborate): do not invoke unifier if no constraints were generated during elaboration
2014-10-23 10:26:19 -07:00
Leonardo de Moura
f3fdc70400
refactor(library/tactic): add auxiliary module 'library/tactic/elaborate'
2014-10-23 10:26:11 -07:00
Leonardo de Moura
3aec70b92c
feat(library/tactic): elaborate 'exact' tactic argument at tactic execution time
2014-10-22 22:13:37 -07:00
Leonardo de Moura
c50227ea6e
feat(library/tactic): change apply tactic semantics: goals are not reversed; and dependent arguments are not included
...
This commit also adds the tactic rapply that corresponds to the previous
semantics we have been using.
2014-10-22 18:11:09 -07:00
Leonardo de Moura
60132912a4
refactor(library/tactic): remove unnecessary hack
...
It is not needed anymore.
We had to use this hack when we had tactic_macro_definition_cell.
2014-10-22 17:41:19 -07:00
Leonardo de Moura
7c62446023
refactor(frontends/lean): remove dead code
2014-10-22 17:39:06 -07:00
Leonardo de Moura
e95c7c5f70
refactor(library/tactic/rename_tactic): use new 'tactic.expr' to implement 'intro/intros' tactic
...
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2014-10-22 17:29:50 -07:00
Leonardo de Moura
9a316092d1
refactor(library/tactic/rename_tactic): use new 'tactic.expr' to implement rename tactic
2014-10-22 17:29:50 -07:00
Leonardo de Moura
5e15ac0c92
feat(library/tactic): add new approach for embedding non-elaborated expressions into tactics
2014-10-22 17:29:50 -07:00
Leonardo de Moura
7c617955d0
refactor(library/tactic): move 'exact' tactic to separate module
2014-10-22 17:29:44 -07:00
Leonardo de Moura
323715e951
refactor(library/tactic): move 'tracing' tactics to separate module
2014-10-22 14:12:45 -07:00
Leonardo de Moura
815dc9b63d
chore(library/tactic/expr_to_tactic): remove dead code
2014-10-20 18:59:57 -07:00
Leonardo de Moura
53a64ac767
refactor(library/tactic): move intros_tactic initialization to intros_tactic module
2014-10-20 17:47:52 -07:00
Leonardo de Moura
3c4419ff23
refactor(library/tactic): move rename_tactic to separate module
2014-10-20 17:41:40 -07:00
Leonardo de Moura
ac9397816f
refactor(library/tactic): move apply_tactic initialization to apply_tactic module
2014-10-20 17:32:32 -07:00
Leonardo de Moura
7d0100a340
feat(library/tactic): add 'intros' tactic
2014-10-20 15:26:16 -07:00
Leonardo de Moura
5cba7244ce
fix(library/tactic/expr_to_tactic): argument evaluation order is not part of the standard
2014-10-20 15:16:38 -07:00
Leonardo de Moura
8cfb3ae687
fix(library/module): bug in import_module
2014-10-18 21:03:22 -07:00
Leonardo de Moura
d2cbd25985
refactor(kernel): replace_visitor doesn't need to be in the kernel anymore
2014-10-17 10:23:35 -07:00
Leonardo de Moura
8974b52f7b
perf(library/unifier): avoid unnecessary wasteful computation
2014-10-16 17:16:49 -07:00
Leonardo de Moura
c4f02bd16a
refactor(kernel/expr): remove dead code
2014-10-16 13:09:26 -07:00
Leonardo de Moura
28128e0330
fix(frontends/lean): EXTRA_TYPE info
2014-10-16 12:25:18 -07:00
Leonardo de Moura
d960c1994e
refactor(library/tactic/apply_tactic): reuse type_checker object
2014-10-15 09:28:01 -07:00
Leonardo de Moura
bbe4017790
refactor(library/tactic/apply_tactic): remove dead code
2014-10-15 09:15:11 -07:00
Leonardo de Moura
b94d121580
refactor(library): move flycheck "helper" classes to separate module
2014-10-15 09:08:04 -07:00
Leonardo de Moura
e6606ef2ac
feat(library/tactic): add 'rename' hypothesis tactic
2014-10-14 18:19:34 -07:00
Leonardo de Moura
90dba868e3
feat(library/tactic/proof_state): apply substitutions when pretty printing state
2014-10-14 17:37:20 -07:00
Leonardo de Moura
58c9421bab
refactor(library/tactic): elaborate expressions nested in tactics with respect to current goal, save postponed constraints (e.g., flex-flex constraints) closes #44 , fixes #70
2014-10-14 17:18:40 -07:00
Soonho Kong
0f5d88517d
chore(library/rewriter): remove lean-0.1 files
2014-10-14 16:03:34 -07:00
Leonardo de Moura
5ff200c516
chore(library/simplifier): delete old simplifier
...
This was the simplifier used in Lean 0.1.
2014-10-14 15:56:09 -07:00
Leonardo de Moura
a30232b99a
fix(library/module): race condition on m_imported
2014-10-14 15:19:50 -07:00
Leonardo de Moura
7231aa0d73
fix(library/module): allow multiple calls to import_modules with the same modules
...
The idea is to store a set of already imported files.
This feature is useful when using the import_modules API directly (e.g.,
from javascript).
2014-10-14 08:13:41 -07:00
Leonardo de Moura
7d0db4cc60
feat(library/kernel_serializer): compress binder modifier annotations when saving .olean file
2014-10-13 10:14:56 -07:00
Leonardo de Moura
a26618e0f2
feat(frontends/lean): add '[]' notation for marking arguments where class-instance resolution should be applied
2014-10-12 13:06:00 -07:00
Leonardo de Moura
78b8a67015
refactor(library/scoped_ext): sections are just "nameless" namespaces
2014-10-11 17:36:46 -07:00
Leonardo de Moura
3d65b1c25c
fix(frontends/lean/elaborator): incorrect type information being reports in lean-mode, fixes #241
2014-10-10 15:41:55 -07:00
Leonardo de Moura
9ba59c6b25
feat(library/universe): improve support for universe level constraints in the unifier
2014-10-09 20:28:39 -07:00
Leonardo de Moura
86410d392b
feat(util/list_fn): generalize map_filter template
2014-10-08 22:23:20 -07:00
Leonardo de Moura
8fa171cb92
refactor(library/unifier): allow general 'unify' procedure to take an initial substitution as argument
2014-10-07 17:30:57 -07:00
Leonardo de Moura
92c424936a
refactor(kernel/macro_definition_cell): improve macro get_type API
2014-10-07 16:38:31 -07:00
Soonho Kong
2cf6cf19c0
feat(src): add LEAN_VERSION_PATCH
2014-10-07 12:30:38 -07:00
Leonardo de Moura
60d8369688
fix(library/unifier): missing justification when updating choice constraints
...
The bug was not producing incorrect results, but really bad error
messages.
See: empty.lean.expected.out
2014-10-04 10:40:53 -07:00
Leonardo de Moura
bf081ed431
refactor(kernel): rename var_decl to constant_assumption
...
Motivation: it matches the notation used to declare it.
2014-10-02 17:55:34 -07:00
Leonardo de Moura
ead827d6b7
feat(frontends/lean): add !
operator the "dual" of @
, closes #220
2014-10-01 17:13:41 -07:00
Leonardo de Moura
2730e5163e
feat(frontends/lean): allow 'sorry' implicit argument to access the whole context, and avoid cryptic error message
...
See new test for explanation.
2014-09-30 18:04:04 -07:00
Leonardo de Moura
486839881c
feat(*): use environment fingerprint to detect when the cache cannot be used because the configuration changed, closes #75
...
We are not taking into the account the options object yet.
2014-09-29 18:30:00 -07:00
Leonardo de Moura
19dec32844
feat(library): add environment fingerprint
2014-09-29 18:30:00 -07:00
Leonardo de Moura
530997638a
feat(library/definition_cache): store the hashcode of direct dependencies
...
Actually we store the has code of their types.
2014-09-29 18:30:00 -07:00
Leonardo de Moura
a0c37b231f
feat(kernel/expr): add hash_bi function that takes binder information into account
2014-09-29 16:44:55 -07:00
Leonardo de Moura
0d6d746d98
feat(frontends/lean): check modification time of imported files
...
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2014-09-29 15:17:27 -07:00
Leonardo de Moura
9f6a8827e0
refactor(*): use name_map
2014-09-28 10:23:11 -07:00
Leonardo de Moura
22e47430b5
feat(library/unifier): add 'on-demand' choice constraints, they are processed as soon as their type does not contain meta-variables anymore
2014-09-27 21:50:39 -07:00
Leonardo de Moura
8e7aac1eb4
fix(frontends/lean): add 'eval' command
2014-09-26 20:16:03 -07:00
Leonardo de Moura
9928390605
fix(library/match): memory leak that only happens with compiling with clang++
2014-09-26 10:24:38 -07:00
Leonardo de Moura
cd87539de5
fix(library/unifier): bug in the new next_delta_unfold_case_split
2014-09-25 09:56:32 -07:00
Leonardo de Moura
0488ee4ee2
perf(library/unifier): process delta expansion case split lazily
2014-09-24 19:16:12 -07:00
Leonardo de Moura
516c0c73b9
refactor(*): remove dependency to thread_local C++11 keyword, the
...
current compilers have several bugs associated with it
We use the simpler __thread (gcc and clang) and
__declspec(thread) (visual studio).
2014-09-24 12:51:04 -07:00
Leonardo de Moura
358074ae3d
refactor(kernel/record): remove kernel extension for records, we will
...
implement it outside of the kernel on top of the inductive datatypes
2014-09-24 10:12:28 -07:00
Leonardo de Moura
da481c3274
refactor(kernel): explicit initialization/finalization
...
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2014-09-24 10:12:28 -07:00
Leonardo de Moura
4dd7abb14e
refactor(library): explicit initialization/finalization
2014-09-23 10:45:14 -07:00
Leonardo de Moura
27ff42d2e0
refactor(library): remove dead files
2014-09-23 10:28:20 -07:00
Leonardo de Moura
83b22823a6
refactor(library/tactic): explicit initialization/finalization
2014-09-23 10:06:15 -07:00
Leonardo de Moura
531046626a
refactor(*): explicit initialization/finalization for environment extensions
2014-09-22 17:30:29 -07:00
Leonardo de Moura
b6781711b1
refactor(*): explicit initialization/finalization for serialization
...
modules, expression annotations, and tactics
2014-09-22 15:26:41 -07:00
Leonardo de Moura
b1ee888aae
refactor(*): start move to explicit initialization/finalization,
...
explicitly initialize/finalize options
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2014-09-22 10:41:07 -07:00
Leonardo de Moura
fd5daa8fda
feat(frontends/lean): use coercions to function-class and sort-class in
...
function arguments, closes #203
2014-09-20 09:00:10 -07:00
Leonardo de Moura
08ccd58eb6
feat(frontends/lean): add 'reducible' modifier for controlling which
...
definitions are unfolded during elaboration
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2014-09-19 15:54:32 -07:00
Leonardo de Moura
baf4c01de8
feat(frontends/lean): definitions are opaque by default
2014-09-19 15:54:32 -07:00
Leonardo de Moura
93c2c30310
feat(frontends/lean): allow transient coercions, i.e., coercions that
...
are not saved in .olean files
2014-09-19 15:54:32 -07:00
Leonardo de Moura
cbafa0dbf9
feat(library/scoped_ext): allow extensions to mark whether an entry is
...
persistent or not
2014-09-19 15:54:32 -07:00
Leonardo de Moura
49d5af473d
refactor(kernel): remove support for proof irrelevant classes
...
Motivation: we can use Prop
2014-09-19 07:32:07 -07:00
Leonardo de Moura
87592cdb43
refactor(library): remove dead code
2014-09-18 22:45:53 -07:00
Leonardo de Moura
dd31ed60b0
refactor(library): remove unnecessary file hott_kernel, HoTT and
...
standard library have been merged
2014-09-18 20:30:37 -07:00
Leonardo de Moura
243f80231a
chore(kernel): fix style and lua bindings
2014-09-17 18:30:28 -07:00
Leonardo de Moura
ea1bae0143
refactor(kernel/converter): replace extra_opaque_set with predicate
...
It gives us more flexibility.
2014-09-17 17:05:13 -07:00
Leonardo de Moura
1fbb554a16
feat(library/module): provide predicate module::is_definition
2014-09-17 16:32:00 -07:00
Leonardo de Moura
e3e2370a38
feat(frontends/lean): split 'opaque_hint' command into 'opaque' and 'transparent'
...
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2014-09-16 18:03:40 -07:00
Leonardo de Moura
841658ec37
feat(library/error_handling): generate valid line and column information
...
when in flycheck mode
2014-09-14 20:15:22 -07:00
Leonardo de Moura
edcbe6fe10
feat(frontends/lean): allow multiple coercions from class A to B, closes #187
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See new tests (for examples)
tests/lean/run/coe10.lean
tests/lean/run/coe11.lean
tests/lean/run/coe9.lean
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2014-09-14 12:59:43 -07:00
Leonardo de Moura
1b6d4460e9
chore(library/coercion): cleanup
2014-09-14 12:59:43 -07:00
Leonardo de Moura
d647954f93
feat(frontends/lean/elaborator): constraints associated with 'proof-qed'
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blocks are solved independently, closes #82
2014-09-13 10:21:10 -07:00
Leonardo de Moura
029acbd1df
feat(library/coercion): better support for coercions to function-class. closes #185
2014-09-12 13:17:20 -07:00
Leonardo de Moura
62585f1c56
fix(library/coercion): remove spurious '\n'
2014-09-12 13:08:47 -07:00
Leonardo de Moura
010ecebfea
feat(frontends/lean): add proof-qed expression
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Remark: we still have to add support to it in the elaborator.
Right now, it is just an embellished parenthesis.
2014-09-11 18:14:49 -07:00