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423 commits

Author SHA1 Message Date
Leonardo de Moura
b1ece388a6 feat(frontends/lean,library/tactic/induction_tactic): improve induction tactic notation, expand induction tactic implementation 2015-05-18 09:25:07 -07:00
Leonardo de Moura
4256984803 fix(library/tactic/inversion_tactic): incorrect check 2015-05-18 09:16:07 -07:00
Leonardo de Moura
d41bff8c43 feat(library): add helper function 2015-05-18 09:16:07 -07:00
Leonardo de Moura
84faef5d5d feat(library/tactic/rewrite_tactic): rewrite tactic with 'iff' lemmas 2015-05-14 18:27:13 -07:00
Sebastian Ullrich
77c20e99ff feat(library/tactic/inversion_tactic): consistent orientation of generated equalities 
Generated equalities in proof irrelevant environments were inverted
compared with the documentation and the proof relevant case, which
resulted in newly generated local vars replacing equivalent old ones
instead of the other way around.
 2015-05-14 23:32:54 +02:00
Leonardo de Moura
065a1f7501 feat(library/tactic): add 'induction' tactic skeleton 2015-05-12 20:21:25 -07:00
Leonardo de Moura
9649d540c0 fix(library/tactic/rewrite_tactic.cpp): memory leak 2015-05-11 16:19:17 -07:00
Leonardo de Moura
207e8e86da fix(library/definitional/equations): do not clear eliminated hypotheses when invoking 'cases' tactic from definitional package 2015-05-10 11:08:02 -07:00
Leonardo de Moura
6c958a25e7 refactor(library/tactic/expr_to_tactic): make sure builtin tactics don't need to be marked opaque 
This modification is needed since we will remove opaque definitions from
the kernel.

see issue #576
 2015-05-08 16:06:16 -07:00
Leonardo de Moura
57ea660963 refactor(*): start process for eliminating of opaque definitions from the kernel 
see issue #576
 2015-05-08 16:06:04 -07:00
Leonardo de Moura
061e26157e fix(kernel,library): make sure macros check relevant arguments when kernel is performing full type checking 2015-05-08 12:41:23 -07:00
Leonardo de Moura
72663e8a06 feat(library/tactic/rewrite_tactic): take hypotheses into account when checking rewrite step 2015-05-08 11:34:50 -07:00
Leonardo de Moura
0b57f7d00a refactor(library/tactic): refine interface between tactic and proof-term modes 
Some constraints were being lost with the previous interface.
This is why we had a workaround in fintype.lean.

We can also remove some hacks we have used in the past.
 2015-05-07 18:02:51 -07:00
Leonardo de Moura
ac24f19210 fix(library/tactic/rewrite_tactic): use relaxed type checker when processing rewrite "proof step" 
That is, the restricted type checker should only be used in the
matching/unification step.

fixes #583
 2015-05-07 09:57:23 -07:00
Leonardo de Moura
e0b7017435 feat(frontends/lean): make sure the proof state bit "report errors" is 
set in the beginning of each begin-end element

see discussion at #583
 2015-05-07 09:43:39 -07:00
Leonardo de Moura
210cae7d6c fix(library/tactic): we must unfold untrusted macros when type checking intermediate results 
Example: before this commit, the file librata/data/list/perm.lean would
not type check if the option -t 0 (trust level zero) was provided.
Reason: the intermediate term contained a macro, and macros are not
allowed at trust level zero.
 2015-05-06 14:23:58 -07:00
Leonardo de Moura
84deddcca9 feat(library/tactic/rewrite_tactic): apply 'reflexivity' tactic after 'rewrite' instead of hard coded solution 2015-05-05 20:23:49 -07:00
Leonardo de Moura
c7a20644c0 fix(library/tactic/rewrite_tactic): bug in rewrite tactic (HoTT mode) 
closes #580
 2015-05-05 19:25:15 -07:00
Leonardo de Moura
a4efefb6ff feat(library/tactic/rewrite_tactic): display type error message when 
rewrite tactic fails
 2015-05-05 19:23:41 -07:00
Leonardo de Moura
616f49c2e4 feat(frontends/lean): improved 'obtains' expression 2015-05-05 18:30:16 -07:00
Leonardo de Moura
3c8c75470f fix(library/tactic/exact_tactic): do not report unassigned metavariables in the 'refine' tactic 2015-05-03 21:08:09 -07:00
Leonardo de Moura
326048df54 feat(library/tactic/inversion_tactic): clear variables that have been eliminated by cases tactic 
see discussion at:
https://groups.google.com/forum/#!topic/lean-discuss/oyzgIqdMyNc
 2015-05-02 19:33:59 -07:00
Leonardo de Moura
e1dc18f6b6 fix(library/tactic/inversion_tactic): check whether eliminator can only eliminate to Prop 
fixes #571
 2015-05-02 17:48:08 -07:00
Leonardo de Moura
e379034b95 feat(library/tactic): improve 'assumption' tactic 
- It uses the unifier in "conservative" mode
- It only affects the current goal

closes #570
 2015-05-02 17:33:54 -07:00
Leonardo de Moura
b39fe17dee feat(library/tactic): add 'transitiviy', 'reflexivity' and 'symmetry' tactics 
closes #500
 2015-05-02 15:48:25 -07:00
Leonardo de Moura
415ca2b93f feat(library/tactic): add 'congruence' tactic 
It is the f_equal described at issue #500.
 2015-05-02 12:58:46 -07:00
Leonardo de Moura
2054d67483 chore(library/tactic/rewrite_tactic): fix style 2015-05-01 19:49:48 -07:00
Leonardo de Moura
9dc0388022 fix(library/tactic/rewrite_tactic): bug when rewriting hypotheses 2015-05-01 19:45:23 -07:00
Leonardo de Moura
ac8ba6a3cf feat(library/tactic): add 'subst' tactic 
see issue #500
 2015-05-01 19:31:24 -07:00
Leonardo de Moura
b0759f3986 fix(library/tactic/rewrite_tactic): bug when rewriting multiple hypotheses 2015-05-01 19:03:43 -07:00
Leonardo de Moura
de369a0a0a feat(library/tactic/injection_tactic): improve 'injection' tactic 
see issue #500
 2015-05-01 15:49:56 -07:00
Leonardo de Moura
9ba8b284a1 fix(library/tactic/apply_tactic): add eapply, and fix issue #361 2015-05-01 15:08:00 -07:00
Leonardo de Moura
63eb155c7e feat(library/tactic): add 'injection' tactic 
see issue #500
 2015-05-01 12:45:21 -07:00
Leonardo de Moura
7e9f574ef3 fix(library/tactic/apply_tactic): use internally 'apply' instead of 'fapply' as the default "apply" tactic 
This changes improves the 'constructor' tactic
 2015-04-30 21:58:35 -07:00
Leonardo de Moura
2d9c950144 feat(library/tactic/constructor_tactic): allow 'constructor' tactic without index 
see issue #500
 2015-04-30 21:15:07 -07:00
Leonardo de Moura
15e52b06df fix(library/tactic/constructor_tactic): bug in constructor tactic 
see example (constr_tac2.lean) in comment at issue #500
 2015-04-30 20:18:24 -07:00
Leonardo de Moura
d18f9c7607 fix(library/tactic/constructor_tactic): use 1 (instead of 0) to reference the first constructor 
see comment at issue #500
 2015-04-30 20:08:00 -07:00
Leonardo de Moura
0b995c4fe3 fix(library/tactic/rewrite_tactic): relax reducibility constraints in some parts of the rewrite tactic 
fixes #567
 2015-04-30 18:22:58 -07:00
Leonardo de Moura
d152f38518 feat(library/tactic): add 'constructor', 'split', 'left', 'right' and 'existsi' tactics 
see issue #500
 2015-04-30 17:52:29 -07:00
Leonardo de Moura
1c6067bac2 feat(library/tactic): add 'exfalso' tactic 
see issue #500
 2015-04-30 15:43:07 -07:00
Leonardo de Moura
d546b019fb fix(library/tactic/rewrite_tactic): assertion violation when checking 
dependencies at rewrite tactic
 2015-04-30 15:41:57 -07:00
Leonardo de Moura
936e024128 fix(library/tactic/rewrite_tactic): bug in rewrite hypothesis in HoTT mode 2015-04-30 15:30:25 -07:00
Leonardo de Moura
9c8a63caec feat(library/tactic): add 'contradiction' tactic 
see issue #500

Remark: this tactic also applies no_confusion to take care of a contradiction
 2015-04-30 13:47:40 -07:00
Leonardo de Moura
3233008039 feat(library/tactic): allow user to name generalized term in the 'generalize' tactic 
closes #421
 2015-04-30 11:57:40 -07:00
Leonardo de Moura
3912bc24c8 feat(frontends/lean): nicer syntax for 'intros' 'reverts' and 'clears' 2015-04-30 11:00:39 -07:00
Leonardo de Moura
dce7177382 feat(library/tactic/change_tactic): improve 'change' tactic 
- Better error messages
- Try to solve unification constraints produced during is_def_eq test

addresses comment on issue #531
 2015-04-29 13:31:09 -07:00
Leonardo de Moura
d055947243 feat(library/tactic/rewrite_tactic): ignore implicit argument when matching at rewrite tactic 2015-04-29 12:51:33 -07:00
Leonardo de Moura
182a8a542e feat(library/tactic/rewrite_tactic): store exception "what" message in rewrite trace 2015-04-29 12:46:41 -07:00
Leonardo de Moura
b790ca9806 fix(library/tactic/rewrite_tactic): type check rewriting steps 
closes #550
 2015-04-29 12:16:37 -07:00
Leonardo de Moura
91abba3c3d refactor(kernel): rename method 2015-04-29 11:46:27 -07:00