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425 commits

Author SHA1 Message Date
Leonardo de Moura
28c63e685b feat(frontends/lean): add '[local]' notation, closes #322 2014-11-16 21:15:04 -08:00
Leonardo de Moura
a171f8fbc3 test(tests/lean/run): simple diag for square matrices 2014-11-15 18:49:17 -08:00
Leonardo de Moura
1b95b69251 test(tests/lean/run): define subterm relation for vectors 2014-11-15 16:17:51 -08:00
Leonardo de Moura
ea640257bf feat(frontends/lean/structure_cmd): generate no_confusion for structures too 2014-11-15 16:00:09 -08:00
Leonardo de Moura
b87559dac5 test(tests/lean/run): define subterm relation for trees by hand 2014-11-15 13:29:23 -08:00
Leonardo de Moura
7685516d1e feat(frontends/lean): better default for atomic notation 2014-11-14 16:25:13 -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
488f989c46 fix(frontends/lean/inductive_cmd): generate error for inductive datatype declarations that will produce an eliminator that can only eliminate to Prop 2014-11-14 13:57:42 -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
edd04881ee fix(library/logic): import prod and unit declarations in logic 
Reason: we need them for automatically generating constructions needed
by the definitional package
 2014-11-12 16:54:50 -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
97609d1625 test(tests/lean/run/nateq): add example that triggered previous modification 2014-11-12 15:11:08 -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
a3066e3eaa fix(frontends/lean/inductive_cmd): bug in inductive datatype elaborator 2014-11-12 13:10:19 -08:00
Leonardo de Moura
463e70332d test(tests/lean/run): define brec_on and binduction_on for a reflexive type 
We say an inductive type T is reflexive if it contains at least one constructor that
takes as an argument a function returning T.

For reflexive types it doesn't seen to be possible to define a single
brec_on that can eliminate to Type.{>=1} and Prop.
The universe level expressions get too complicated.
Even if we extend the universe constraint solver in the kernel, the
additional complexity might be a problem.

We workaround this issue by defining two versions of brec_on:
  - One (brec_on) that eliminates to Type.{>=1}, and
  - binduction_on that eliminates to Prop.

For non-reflexive types, we can combine both of them.
 2014-11-12 10:52:32 -08:00
Leonardo de Moura
faf90c4b87 test(tests/lean/run): test brec_on on vectors 2014-11-11 17:23:59 -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
e65b5884e5 test(tests/lean/run/forest): define brec_on for forests 
Almost everything explicit to get an idea of what needs to be generated automatically.
 2014-11-11 13:16:23 -08:00
Leonardo de Moura
b3e4a689cf test(tests/lean/run): define ackermann function using recursors 2014-11-11 11:06:10 -08:00
Leonardo de Moura
1f92751c4d test(tests/lean/run): fibonacci using well_founded recursion 2014-11-10 12:46:55 -08:00
Leonardo de Moura
363d4a7577 fix(library/definitional/no_confusion): assertion violation 2014-11-10 10:32:03 -08:00
Leonardo de Moura
df5a17cdce feat(frontends/lean/placeholder_elaborator): include type in class-instance resolution trace 2014-11-09 12:06:16 -08:00
Leonardo de Moura
9b9ae128d5 feat(frontends/lean): include file-name and line/col numbers when displaying class-instance resolution trace 2014-11-09 11:47:01 -08:00
Leonardo de Moura
aef1dd9a04 test(tests/lean/run): fibonacci using below_rec_on (aka brec_on) 2014-11-08 22:19:18 -08:00
Leonardo de Moura
1b6e40d3d6 test(tests/lean/run): define below_rec_on (aka brec_on) for vectors 2014-11-08 22:19:18 -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
f16f215c2a refactor(data/num/string): break into pieces to reduce dependencies 2014-11-07 08:53:14 -08:00
Leonardo de Moura
e993486301 refactor(library/data/num): break into pieces to reduce dependencies 2014-11-07 08:24:29 -08:00
Leonardo de Moura
b3ad8c704a feat(frontends/lean/structure_cmd): allow inheritance from two identical structures, closes #296 2014-11-05 15:01:05 -08:00
Leonardo de Moura
4650791108 feat(frontends/lean): add 'print fields' command 2014-11-05 14:06:54 -08:00
Leonardo de Moura
354baf4d13 test(tests/lean/run): add structure command test 2014-11-05 12:54:03 -08:00
Leonardo de Moura
677e0aeef6 fix(frontends/lean/structure_cmd): accept ': Type' when universe levels are not specified 2014-11-05 12:02:52 -08:00
Leonardo de Moura
defc2478b5 feat(frontends/lean): add 'record' as an alias for 'structure' command 2014-11-05 12:02:52 -08:00
Leonardo de Moura
6944c7d902 fix(frontends/lean/placeholder_elaborator): local context must be adjusted when performing class-instance resolution modulo Pi-abstraction, fixes #293 2014-11-04 18:41:27 -08:00
Leonardo de Moura
d58c3e498d feat(frontends/lean/builtin_cmds): add 'print prefix' command 2014-11-04 08:40:32 -08:00
Leonardo de Moura
b6722a5d33 feat(frontends/lean/structure_cmd): add 'private' modifier for parent structures 
When it is used coercions/instances to parent structure are to registered
 2014-11-03 23:16:49 -08:00
Leonardo de Moura
b24165dc7b feat(frontends/lean/structure_cmd): remove 'cases_on' for structures since it may confuse users, add 'destruct' as alternative name for 'rec_on' 2014-11-03 23:06:33 -08:00
Leonardo de Moura
7897e21a14 feat(frontends/lean/structure_cmd): allow fields to be suppresed, but constructor to be provided 2014-11-03 22:55:51 -08:00
Leonardo de Moura
08b4ce2db9 feat(frontends/lean/structure_cmd): use 'mk' as constructor name when it is not provided 2014-11-03 22:40:08 -08:00
Leonardo de Moura
8f3139231b feat(frontends/lean/structure_cmd): allow structure declarations that contains only a header 2014-11-03 22:17:43 -08:00
Leonardo de Moura
91749d2364 fix(frontends/lean/structure_cmd): modify coercion generation 
The previous coercion was more efficient, but the computation was
getting stuck when processing algebraic structures
 2014-11-03 19:37:11 -08:00
Leonardo de Moura
d2b5af237e refactor(library): use new 'structure' command to define prod and sigma 2014-11-03 18:57:55 -08:00
Leonardo de Moura
ea7470375f fix(tests/lean): to reflect changes in the standard library 2014-11-03 18:46:53 -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
186d910d0b feat(frontends/lean/structure_cmd): mark coercion to parents as coercions and instances (when both structures as classes) 2014-11-03 17:55:59 -08:00
Leonardo de Moura
b112f3c582 feat(frontends/lean/structure_cmd): add coercions to parent structures 2014-11-03 17:39:52 -08:00
Leonardo de Moura
7afa69577e feat(frontends/lean/structure_cmd): add aliases for structure decls 2014-11-03 15:50:41 -08:00
Leonardo de Moura
efe1105eb9 fix(frontends/lean): alias generation for composite names was not working 
This is an issue for declarations that generate composite names such as
the inductive datatype packacke.

The commit also fix a bug in the generate of aliases for recursors
 2014-11-03 15:43:58 -08:00
Leonardo de Moura
0f56b5f5b7 test(tests/lean/run): add structure command test 2014-11-03 14:29:17 -08:00
Leonardo de Moura
a2e75159c8 fix(frontends/lean): process choice-exprs at check_constant_next 2014-11-02 19:42:30 -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
ea55ec4090 feat(frontends/lean/decl_cmds): remove useless name from 'example' commad 2014-11-01 16:12:23 -07:00
Leonardo de Moura
1e6f7cdbb4 chore(frontends/lean/decl_cmds): add 'example' command 
It is like a theorem, but it is discarded after checking
 2014-11-01 11:37:39 -07:00
Leonardo de Moura
94cf10284a fix(frontends/lean/calc_proof_elaborator): bug when inserting symmetry proofs for heq, fixes #286 
The problem was that heq type is
    Pi {A : Type} (a : A) {B : Type} (b : B), Prop

The calc_proof_elaborator was assuming that (a : A) (b : B) were the
last two arguments in any relation supported by calc.

The fix is to remove this assumption.
 2014-11-01 07:30:04 -07:00
Leonardo de Moura
2688ca38bf feat(frontends/lean/inductive_cmd): notation for enumeration types 2014-10-31 19:01:32 -07:00
Leonardo de Moura
d7beabe91c fix(frontends/lean/calc_proof_elaborator): improve calc proof assistant 2014-10-31 09:49:45 -07:00
Leonardo de Moura
17df85f592 feat(frontends/lean/calc_proof_elaborator): add '{...}' if needed in calc proof steps 
This is part of #268
 2014-10-31 00:55:19 -07:00
Leonardo de Moura
591e566472 feat(frontends/lean): try to inject symmetry (if needed) in calc proofs, add calc_symm command for configuring the symmetry theorem for a given operator 
This is part of #268
 2014-10-30 23:24:09 -07:00
Leonardo de Moura
c5a62f8abb feat(frontends/lean): insert ! in calculational proofs when needed 
This is part of #268
 2014-10-30 22:22:04 -07:00
Leonardo de Moura
6107da05db fix(frontends/lean): universe variable is treated as parameter inside section, fixes #283 2014-10-29 19:47:14 -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
fe4ea48381 feat(library/definitional/projection): add projection generator, closes #257 2014-10-29 13:13:05 -07:00
Leonardo de Moura
60f32fa709 fix(frontends/lean): begin-end automatic tactic notation bug, fixes #262 2014-10-27 17:12:25 -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
7516fcad97 feat(kernel/type_checker): add is_stuck method, and improve ensure_pi method, closes #261 2014-10-27 13:16:50 -07:00
Leonardo de Moura
49941ce35b test(tests/lean/run/sigma_no_confusion): define 'no_confusion' for sigma types 2014-10-27 07:26:01 -07:00
Leonardo de Moura
81dc201bab fix(frontends/lean/elaborator): nested begin-end bug 2014-10-26 18:23:30 -07:00
Leonardo de Moura
cc6a96e8ba fix(frontends/lean): improve begin-end construct 2014-10-26 15:47:29 -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
8e6de93394 fix(frontends/lean/parser): add two kinds of no_undef_id behavior: to (global) constant; to local constant 2014-10-26 09:47:11 -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
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
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
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
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
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
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
6b89080b1a feat(frontends/lean): do not allow user to define notation using tokens ! and @, closes #248 2014-10-21 16:28:36 -07:00
Leonardo de Moura
e24225fabf feat(frontends/lean): validate infixl/infixr/postfix/prefix declarations against reserved notations 2014-10-21 15:39:47 -07:00
Leonardo de Moura
6c7e23ecaa refactor(library): use 'reserve' notation in the standard library 2014-10-21 15:39:47 -07:00
Leonardo de Moura
bb953b80aa feat(frontends/lean): reserve notation, closes #95 2014-10-21 15:39:47 -07:00
Leonardo de Moura
e2fa981e89 fix(frontends/lean/pp): avoid parentheses around atomic notation 2014-10-20 18:08:13 -07:00
Leonardo de Moura
e68007a727 fix(frontends/lean/builtin_tactics): adjust tactics precedence 2014-10-20 17:10:16 -07:00
Leonardo de Moura
9b8f60b739 feat(frontends/lean/builtin_exprs): tolerate dangling ',' in begin-end block 
This is useful when debugging proofs.
 2014-10-20 15:59:49 -07:00
Leonardo de Moura
7d0100a340 feat(library/tactic): add 'intros' tactic 2014-10-20 15:26:16 -07:00
Leonardo de Moura
e6606ef2ac feat(library/tactic): add 'rename' hypothesis tactic 2014-10-14 18:19:34 -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
Leonardo de Moura
b7c1b348d1 feat(frontends/lean/inductive_cmd): don't force user to repeat argument declarations in every datatype in a mutually recursive datatype declaration 2014-10-13 20:53:09 -07:00
Leonardo de Moura
08c0fb3a64 test(tests/lean/run): expand tree example 2014-10-13 07:08:29 -07:00
Leonardo de Moura
5c1d5133dd fix(library/data/prod): make the notation for tuples and product types consistent 2014-10-13 06:48:37 -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
158682219f feat(frontends/lean): allow parameters only in contexts 2014-10-11 17:13:56 -07:00
Leonardo de Moura
f0523a3465 feat(frontends/lean): namespaces also define scope for variables 2014-10-10 16:21:30 -07:00
Leonardo de Moura
0641ee33ce feat(frontends/lean): allow variables anywhere 2014-10-10 16:16:19 -07:00
Leonardo de Moura
235b8975d2 feat(kernel/inductive): K-like reduction in the kernel 
Given (H_1 : a = a), we have that
      eq.rec H_2 H_1
reduces to H_2

This is not exclusive to equality.
It applies to any inductive datatype in Prop, containing only one
constructor with zero "arguments" (we say they are nullary).

BTW, the restriction to only one constructor is not needed, but it is
does not buy much to support multiple nullary constructors since Prop is
proof irrelevant.
 2014-10-10 14:37:45 -07:00
Leonardo de Moura
402a351937 feat(frontends/lean): add 'universes' command 2014-10-10 08:45:59 -07:00