Commit 41ad05c6 authored by Robbert Krebbers's avatar Robbert Krebbers

Frame under a wand.

parent fba57127
......@@ -256,6 +256,13 @@ Global Instance frame_or R P1 P2 Q1 Q2 Q :
Frame R P1 Q1 Frame R P2 Q2 MakeOr Q1 Q2 Q Frame R (P1 P2) Q.
Proof. rewrite /Frame /MakeOr => <- <- <-. by rewrite -sep_or_l. Qed.
Global Instance frame_wand R P1 P2 Q2 :
Frame R P2 Q2 Frame R (P1 - P2) (P1 - Q2).
rewrite /Frame=> ?. apply wand_intro_l.
by rewrite assoc (comm _ P1) -assoc wand_elim_r.
Class MakeLater (P lP : uPred M) := make_later : P lP.
Global Instance make_later_true : MakeLater True True.
Proof. by rewrite /MakeLater later_True. Qed.
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