Mcltt.Core.Completeness.LogicalRelation.Tactics

From Mcltt Require Import Base LibTactics.
From Mcltt.Core Require Import PER.
Import Domain_Notations.

Ltac eexists_rel_exp :=
  eexists;
  eexists; [eassumption |];
  eexists.

Ltac eexists_rel_exp_with i :=
  eexists;
  eexists; [eassumption |];
  exists i.

Ltac eexists_rel_sub :=
  eexists;
  eexists; [eassumption |];
  eexists;
  eexists; [eassumption |].

Ltac eexists_subtyp :=
  eexists;
  eexists; [eassumption |];
  eexists.

Ltac eexists_subtyp_with i :=
  eexists;
  eexists; [eassumption |];
  exists i.

Ltac invert_rel_typ_body :=
  simplify_evals;
  match_by_head per_univ_elem ltac:(fun H => directed invert_per_univ_elem H); subst;
  clear_dups;
  clear_refl_eqs;
  handle_per_univ_elem_irrel;
  clear_dups;
  try rewrite <- per_univ_elem_equation_1 in *.