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chore(library/init/meta/simp_tactic): update documentation

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Leonardo de Moura 2016-10-12 17:34:57 -07:00
parent ef23c591fc
commit 45997a0ca8
1 changed files with 10 additions and 7 deletions
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17
library/init/meta/simp_tactic.lean
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@ -75,20 +75,23 @@ simp_lemmas.dsimplify_core default_max_steps ff
namespace tactic
meta constant dsimplify_core
/- The user state type. -/
{A : Type}
/- Initial user data -/
(a : A)
(max_steps : nat)
/- If visit_instances = ff, then instance implicit arguments are not visited, but
tactic will canonize them. -/
(visit_instances : bool)
/- (pre e) is invoked before visiting the children of subterm 'e',
if it succeeds the result is a new expression that must be definitionally equal to 'e',
and a flag indicating whether the new children should be visited or not. -/
/- (pre a e) is invoked before visiting the children of subterm 'e',
if it succeeds the result (new_a, new_e, flag) where
- 'new_a' is the new value for the user data
- 'new_e' is a new expression that must be definitionally equal to 'e',
- 'flag' if tt 'new_e' children should be visited, and 'post' invoked. -/
(pre : A → expr → tactic (A × expr × bool))
/- (post e) is invoked after visiting the children of subterm 'e',
if it succeeds the result is a new expression that must be definitionally equal to 'e',
and a flag indicating whether the new children should be revisited.
Remark: if (pre e) returns (some (new_e, ff)), then post is not invoked for new_e. -/
/- (post a e) is invoked after visiting the children of subterm 'e',
The output is similar to (pre a e), but the 'flag' indicates whether
the new expression should be revisited or not. -/
(post : A → expr → tactic (A × expr × bool))
: expr → tactic (A × expr)