Module LambdaNRAEq


Require Import String.
Require Import List.
Require Import Arith.
Require Import EquivDec.
Require Import Morphisms.

Require Import Utils BasicRuntime.

Require Import LambdaNRA.
Section LambdaNRAEq.

  Context {fruntime:foreign_runtime}.

  Definition lambda_nra_eq (op1 op2:lambda_nra) : Prop :=
    forall
      (h:list(string*string))
      (cenv:bindings)
      (env:bindings)
      (dn_cenv:Forall (fun d => data_normalized h (snd d)) cenv)
      (dn_env:Forall (fun d => data_normalized h (snd d)) env),
      lambda_nra_eval h cenv env op1 = lambda_nra_eval h cenv env op2.

  Definition lnra_lambda_eq (op1 op2:lnra_lambda) : Prop :=
    forall
      (h:list(string*string))
      (cenv:bindings)
      (env:bindings)
      (dn_cenv:Forall (fun d => data_normalized h (snd d)) cenv)
      (dn_env:Forall (fun d => data_normalized h (snd d)) env)
      (d:data)
      (dn_d:data_normalized h d),
      lnra_lambda_eval h cenv env op1 d = lnra_lambda_eval h cenv env op2 d.

  Global Instance lambda_nra_equiv : Equivalence lambda_nra_eq.
Proof.
    constructor.
    - unfold Reflexive, lambda_nra_eq.
      intros; reflexivity.
    - unfold Symmetric, lambda_nra_eq.
      intros. rewrite (H h cenv env dn_cenv dn_env) by trivial; reflexivity.
    - unfold Transitive, lambda_nra_eq.
      intros. rewrite (H h cenv env dn_cenv dn_env) by trivial; rewrite (H0 h cenv env dn_cenv dn_env) by trivial; reflexivity.
  Qed.

  Global Instance lnra_lambda_equiv : Equivalence lnra_lambda_eq.
Proof.
    constructor.
    - unfold Reflexive, lnra_lambda_eq.
      intros; reflexivity.
    - unfold Symmetric, lnra_lambda_eq.
      intros. rewrite (H h cenv env dn_cenv dn_env) by trivial; reflexivity.
    - unfold Transitive, lnra_lambda_eq.
      intros. rewrite (H h cenv env dn_cenv dn_env) by trivial; rewrite (H0 h cenv env dn_cenv dn_env) by trivial; reflexivity.
  Qed.

  Global Instance lavar_proper : Proper (eq ==> lambda_nra_eq) LNRAVar.
Proof.
    unfold Proper, respectful, lambda_nra_eq; intros.
    subst.
    reflexivity.
  Qed.

  Global Instance latable_proper : Proper (eq ==> lambda_nra_eq) LNRATable.
Proof.
    unfold Proper, respectful, lambda_nra_eq; intros.
    subst.
    reflexivity.
  Qed.

  Global Instance laconst_proper : Proper (eq ==> lambda_nra_eq) LNRAConst.
Proof.
    unfold Proper, respectful, lambda_nra_eq; intros.
    subst.
    reflexivity.
  Qed.

  Global Instance labinop_proper :
    Proper (eq ==> lambda_nra_eq ==> lambda_nra_eq ==> lambda_nra_eq) LNRABinop.
Proof.
    unfold Proper, respectful, lambda_nra_eq; intros.
    subst.
    cbn.
    rewrite <- H0, H1 by trivial.
    reflexivity.
  Qed.

  Global Instance launop_proper :
    Proper (eq ==> lambda_nra_eq ==> lambda_nra_eq) LNRAUnop.
Proof.
    unfold Proper, respectful, lambda_nra_eq; intros.
    subst.
    cbn.
    rewrite <- H0 by trivial.
    reflexivity.
  Qed.

  Global Instance lamap_proper :
    Proper (lnra_lambda_eq ==> lambda_nra_eq ==> lambda_nra_eq) LNRAMap.
Proof.
    unfold Proper, respectful, lambda_nra_eq, lnra_lambda_eq; intros.
    autorewrite with lambda_nra.
    rewrite <- H0 by trivial.
    apply olift_ext; intros.
    apply lift_oncoll_ext; intros; subst.
    f_equal.
    apply rmap_ext; intros.
    apply H; trivial.
    eapply lambda_nra_eval_normalized in H1; trivial.
    invcs H1.
    rewrite Forall_forall in H4.
    eauto.
  Qed.

  Global Instance lamapconcat_proper :
    Proper (lnra_lambda_eq ==> lambda_nra_eq ==> lambda_nra_eq) LNRAMapConcat.
Proof.
    unfold Proper, respectful, lambda_nra_eq, lnra_lambda_eq; intros.
    autorewrite with lambda_nra.
    rewrite <- H0 by trivial.
    apply olift_ext; intros.
    apply lift_oncoll_ext; intros; subst.
    f_equal.
    apply rmap_concat_ext; intros.
    apply H; trivial.
    eapply lambda_nra_eval_normalized in H1; trivial.
    invcs H1.
    rewrite Forall_forall in H4.
    eauto.
  Qed.
  
  Global Instance laproduct_proper :
    Proper (lambda_nra_eq ==> lambda_nra_eq ==> lambda_nra_eq) LNRAProduct.
Proof.
    unfold Proper, respectful, lambda_nra_eq, lnra_lambda_eq; intros.
    autorewrite with lambda_nra.
    simpl.
    rewrite <- H, H0 by trivial.
    trivial.
  Qed.

  Global Instance lafilter_proper :
    Proper (lnra_lambda_eq ==> lambda_nra_eq ==> lambda_nra_eq) LNRAFilter.
Proof.
    unfold Proper, respectful, lambda_nra_eq, lnra_lambda_eq; intros.
    autorewrite with lambda_nra.
    rewrite <- H0 by trivial.
    apply olift_ext; intros.
    apply lift_oncoll_ext; intros; subst.
    f_equal.
    apply lift_filter_ext; intros.
    rewrite H; trivial.
    eapply lambda_nra_eval_normalized in H1; trivial.
    invcs H1.
    rewrite Forall_forall in H4.
    eauto.
  Qed.

  Global Instance lalambda_proper :
    Proper (eq ==> lambda_nra_eq ==> lnra_lambda_eq) LNRALambda.
Proof.
    unfold Proper, respectful, lambda_nra_eq, lnra_lambda_eq; intros.
    subst.
    autorewrite with lambda_nra.
    rewrite H0.
    - reflexivity.
    - trivial.
    - apply Forall_sorted; apply Forall_app; auto.
  Qed.

End LambdaNRAEq.

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