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28 commits

Author SHA1 Message Date
Leonardo de Moura
62788a9ca3 refactor(kernel): fix terminology: "free_var" is actually a loose bound variable 
We represent free variables uisng local constants.
We will fix this terminology too.
 2018-06-08 13:25:36 -07:00
Leonardo de Moura
e90585737f refactor(*): use C++11 std::current_exception and std::rethrow_exception 
With these new C++11 APIs, we can delete the `clone` and `rethrow`
methods from our exception classes.
 2018-06-07 16:28:54 -07:00
Leonardo de Moura
bdea7d420d chore(*): type_context ==> type_context_old 2018-03-05 12:38:24 -08:00
Leonardo de Moura
3895fd8511 chore(library): use type_context to update metavar_context 2018-02-27 12:23:26 -08:00
Leonardo de Moura
5607884787 feat(library/tactic): use new cache 
Remark: so far, caching, in the tactic framework, only makes a difference for the `simp` tactic.
This is not surprising since the simplifier tries to apply rewriting
lemmas over and over again.
 2018-02-21 15:04:20 -08:00
Sebastian Ullrich
4d41b03168 chore(frontends/lean,library/tactic): remove old tactic_state functions 2017-02-17 15:41:58 +01:00
Leonardo de Moura
304b5b6a20 fix(library/tactic/generalize_tactic): we must check whether the abstracted type is type correct or not 2017-02-14 13:41:49 -08:00
Leonardo de Moura
f650a1b873 refactor(library/init/meta): avoid '_core' idiom using default parameters 
I kept a few core methods (e.g., exact_core and apply_core). Reason:
if we use default parameters

    meta constant exact (e : expr) (md := semireducible) : tactic unit

then, we will not be able to write

    to_expr p >>= exact

The workaround is

    do t <- to_expr p, exact t

or
    to_expr p >>= (fun x, exact x)

One alternative is to change how we handle default parameters, and
eta-expand applications that involve default parameters.
We may also have an attribute [eta_expand]. Then

    attribute [eta_expand] foo

instructs the elaborator to automatically eta-expand foo-applications.
The attribute would give users more control, and avoid potential
performance problems. Without the attribute, then for every function
application the elaborator has to check the type and decide whether it
must be eta-expanded or not.

@gebner @kha What do you think?
 2017-02-14 09:46:55 -08:00
Johannes Hölzl
36f8d0f0a0 chore(library/tactic/generalize_tactic): fix spelling in error message 2017-02-01 18:48:10 -08:00
Johannes Hölzl
3be8deb2d2 fix(library/tactic/generalize_tactic): instantiate mvars before calling kabstract 2017-02-01 18:48:10 -08:00
Leonardo de Moura
579f643d1d refactor(library): move kabstract to tactic folder 2016-07-18 09:57:02 -04:00
Leonardo de Moura
26177995c2 feat(library/tactic): add 'generalize' tactic 2016-07-16 15:41:32 -04:00
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
68785b8bed fix(library/tactic/generalize_tactic): fixes #711 2015-06-26 19:35:30 -07:00
Leonardo de Moura
ca110012d8 feat(library/tactic): automate "generalize-intro-induction/cases" idiom 
closes #645
 2015-05-30 21:57:28 -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
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
91abba3c3d refactor(kernel): rename method 2015-04-29 11:46:27 -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
e55397d422 feat(library/tactic): add 'clears' and 'reverts' variants 2014-11-26 14:49:48 -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
84b516994c fix(library/tactic): type check generalization result, fixes #273 2014-10-29 20:34:01 -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