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David Swasey
coqstdpp
Commits
436f17c4
Commit
436f17c4
authored
Mar 05, 2016
by
Ralf Jung
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introduce "fast_done", a tactic that *quickly* tries to solve the goal
parent
4c68a044
Changes
2
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2 changed files
with
11 additions
and
5 deletions
+11
5
theories/collections.v
theories/collections.v
+1
1
theories/tactics.v
theories/tactics.v
+10
4
No files found.
theories/collections.v
View file @
436f17c4
...
...
@@ 265,7 +265,7 @@ Ltac set_unfold :=
[set_solver] already. We use the [naive_solver] tactic as a substitute.
This tactic either fails or proves the goal. *)
Tactic
Notation
"set_solver"
"by"
tactic3
(
tac
)
:
=
try
(
reflexivity

eassumption
)
;
try
fast_done
;
intros
;
setoid_subst
;
set_unfold
;
intros
;
setoid_subst
;
...
...
theories/tactics.v
View file @
436f17c4
...
...
@@ 34,6 +34,13 @@ is rather efficient when having big hint databases, or expensive [Hint Extern]
declarations as the ones above. *)
Tactic
Notation
"intuition"
:
=
intuition
auto
.
(* [done] can get slow as it calls "trivial". [fast_done] can solve way less
goals, but it will also always finish quickly. *)
Ltac
fast_done
:
=
solve
[
reflexivity

eassumption

symmetry
;
eassumption
].
Tactic
Notation
"fast_by"
tactic
(
tac
)
:
=
tac
;
fast_done
.
(** A slightly modified version of Ssreflect's finishing tactic [done]. It
also performs [reflexivity] and uses symmetry of negated equalities. Compared
to Ssreflect's [done], it does not compute the goal's [hnf] so as to avoid
...
...
@@ 42,10 +49,9 @@ Coq's [easy] tactic as it does not perform [inversion]. *)
Ltac
done
:
=
trivial
;
intros
;
solve
[
repeat
first
[
solve
[
trivial
]
[
fast_done

solve
[
trivial
]

solve
[
symmetry
;
trivial
]

eassumption

reflexivity

discriminate

contradiction

solve
[
apply
not_symmetry
;
trivial
]
...
...
@@ 288,7 +294,7 @@ Ltac auto_proper :=
(* Normalize away equalities. *)
simplify_eq
;
(* repeatedly apply congruence lemmas and use the equalities in the hypotheses. *)
try
(
f_equiv
;
assumption

(
symmetry
;
assumption
)

auto_proper
).
try
(
f_equiv
;
fast_done

auto_proper
).
(** solve_proper solves goals of the form "Proper (R1 ==> R2)", for any
number of relations. All the actual work is done by f_equiv;
...
...
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