blob: a3b4e6473340cd045b0a4d31e4e023ca91206672 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
|
(************************************************************************)
(* v * The Coq Proof Assistant / The Coq Development Team *)
(* <O___,, * CNRS-Ecole Polytechnique-INRIA Futurs-Universite Paris Sud *)
(* \VV/ **************************************************************)
(* // * This file is distributed under the terms of the *)
(* * GNU Lesser General Public License Version 2.1 *)
(************************************************************************)
(*i $Id: ListTactics.v 9290 2006-10-26 19:20:42Z herbelin $ i*)
Require Import BinPos.
Require Import List.
Ltac list_fold_right fcons fnil l :=
match l with
| (cons ?x ?tl) => fcons x ltac:(list_fold_right fcons fnil tl)
| nil => fnil
end.
Ltac list_fold_left fcons fnil l :=
match l with
| (cons ?x ?tl) => list_fold_left fcons ltac:(fcons x fnil) tl
| nil => fnil
end.
Ltac list_iter f l :=
match l with
| (cons ?x ?tl) => f x; list_iter f tl
| nil => idtac
end.
Ltac list_iter_gen seq f l :=
match l with
| (cons ?x ?tl) =>
let t1 _ := f x in
let t2 _ := list_iter_gen seq f tl in
seq t1 t2
| nil => idtac
end.
Ltac AddFvTail a l :=
match l with
| nil => constr:(cons a l)
| (cons a _) => l
| (cons ?x ?l) => let l' := AddFvTail a l in constr:(cons x l')
end.
Ltac Find_at a l :=
let rec find n l :=
match l with
| nil => fail 100 "anomaly: Find_at"
| (cons a _) => eval compute in n
| (cons _ ?l) => find (Psucc n) l
end
in find 1%positive l.
Ltac check_is_list t :=
match t with
| cons _ ?l => check_is_list l
| nil => idtac
| _ => fail 100 "anomaly: failed to build a canonical list"
end.
Ltac check_fv l :=
check_is_list l;
match type of l with
| list _ => idtac
| _ => fail 100 "anomaly: built an ill-typed list"
end.
|
