Sebastian Ullrich
4d41b03168
chore(frontends/lean,library/tactic): remove old tactic_state functions
2017-02-17 15:41:58 +01:00
Leonardo de Moura
53667dd602
fix(library): change API and make sure we don't crash when searching for a non existing local decl
...
Fixes #1363
After error recovery has been implemented in the elaborator, a few
assumptions made in the type context are not valid anymore since we may
be recovering from errors, and the local and metavariable contexts may
be invalid.
I used the approach used in the class environment.
- find* methods return optional<...>
- get* methods throw exception for unknown elements
Remarks:
I preserved code patterns such as
optional<local_decl> d = lctx.find_local_decl(...)
lean_assert(d)
and did not convert them into
local_decl d = lctx.get_local_decl(...)
Reason: the intention is clear that the local must be defined there.
If it is not we should analyze the problem and decide whether we should
throw an exception or not.
However, I converted code patterns such as
local_decl d = *lctx.find_local_decl(...)
into
local_decl d = lctx.get_local_decl(...)
Disclaimer: this change fixes issue #1363 , but it may obfuscate other bugs.
2017-02-07 09:38:19 -08:00
Leonardo de Moura
98aefca014
fix(library/local_context): depends_on should take into account assigned metavariables
2016-08-25 13:49:54 -07:00
Leonardo de Moura
04fe48539f
feat(library/tactic/revert_tactic): low level version of 'revert' tactic
2016-07-14 14:42:56 -04:00
Leonardo de Moura
f1986b57e9
feat(library/init/meta/tactic): 'revert' tactic returns the number of actually reverted hypothesis
2016-06-28 15:36:50 +01:00
Leonardo de Moura
59f2b9e8c2
refactor(library/type_context): "metavar_context & m_mctx" ==> "metavar_context m_mctx"
2016-06-25 13:08:03 -07:00
Leonardo de Moura
a29e1b76d3
refactor(library/tactic/revert_tactic): revert take a local instead of a name
2016-06-22 15:20:02 -07:00
Leonardo de Moura
195512e125
fix(library/type_context, library/tactic/revert_tactic): result must contain also reverted let-decls
2016-06-21 16:32:02 -07:00
Leonardo de Moura
a136c2ec1e
fix(library/tactic/revert_tactic): update output parameter
2016-06-14 17:56:12 -07:00
Leonardo de Moura
9bcb4e05db
feat(library/tactic): store tactic_state at failure
2016-06-13 15:25:55 -07:00
Leonardo de Moura
290a925c5f
fix(library/tactic/revert_tactic): type_context revert method already assigns metavar
2016-06-13 12:53:56 -07:00
Leonardo de Moura
62116f5b4b
feat(library/tactic): add 'revert' tactic
2016-06-11 10:12:43 -07:00
Leonardo de Moura
aeee79da2b
chore(library): library/tactic => library/old_tactic
2016-06-06 16:38:27 -07:00
Leonardo de Moura
d8079aa16a
refactor(library): create copy of the kernel type_checker in library
...
Motivation: it will allow us to simplify the kernel type_checker and
make sure it implements the same API provided by type_context
2016-03-18 14:34:10 -07:00
Leonardo de Moura
c9e9fee76a
refactor(*): remove name_generator and use simpler mk_fresh_name
2016-02-11 18:05:57 -08:00
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
4ea323a2b2
refactor(library/tactic): cleanup common pattern
2015-03-12 14:52:41 -07:00
Leonardo de Moura
368f9d347e
refactor(frontends/lean): approach used to parse tactics
...
The previous approach was too fragile
TODO: we should add separate parsing tables for tactics
2015-03-05 18:11:21 -08:00
Leonardo de Moura
7fc216183e
feat(library/tactic): produce better error message when a tactic fails
...
closes #348
2015-02-16 18:42:15 -08:00
Leonardo de Moura
27f6bfd3f0
refactor(*): add file constants.txt with all constants used by the Lean binary
2015-01-23 16:50:32 -08:00
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
