From 222a8d9abf3724ab2458aecf445ad21c12da902e Mon Sep 17 00:00:00 2001 From: Jason Gross Date: Wed, 10 Oct 2018 10:12:45 -0400 Subject: Add [normalize_commutative_identifier] tactic --- src/Util/Tactics/RewriteWithCommutativity.v | 16 ++++++++++++++++ 1 file changed, 16 insertions(+) create mode 100644 src/Util/Tactics/RewriteWithCommutativity.v (limited to 'src/Util') diff --git a/src/Util/Tactics/RewriteWithCommutativity.v b/src/Util/Tactics/RewriteWithCommutativity.v new file mode 100644 index 000000000..00af95566 --- /dev/null +++ b/src/Util/Tactics/RewriteWithCommutativity.v @@ -0,0 +1,16 @@ +(** Rewrite with the commutative property to ensure that all appearences of an identifier show up the same way *) + +Ltac rewrite_with_comm id clem x y := + first [ constr_eq x y; fail 1 + | repeat match goal with + | [ H' : context[id y x] |- _ ] + => rewrite clem in H' + | [ |- context[id y x] ] + => rewrite clem + end ]. + +Ltac normalize_commutative_identifier id id_comm := + repeat match goal with + | [ |- context[id ?x ?y] ] => progress rewrite_with_comm id (id_comm y x) x y + | [ H : context[id ?x ?y] |- _ ] => progress rewrite_with_comm id (id_comm y x) x y + end. -- cgit v1.2.3