Notation "Γ > Δ > a '|-' s '@' l" := (mkJudg Γ Δ a s l) (at level 52, Δ at level 50, a at level 52, s at level 50, l at level 50).
(* information needed to define a case branch in a HaskProof *)
-Record ProofCaseBranch {tc:TyCon}{Γ}{Δ}{lev}{branchtype : HaskType Γ ★}{avars}{sac:@StrongAltCon tc} :=
-{ pcb_freevars : Tree ??(LeveledHaskType Γ ★)
-; pcb_judg := sac_gamma sac Γ > sac_delta sac Γ avars (map weakCK' Δ)
+Definition pcb_judg
+ {tc:TyCon}{Γ}{Δ}{lev}{branchtype : HaskType Γ ★}{avars}{sac:@StrongAltCon tc}
+ (pcb_freevars : Tree ??(LeveledHaskType Γ ★)) :=
+ sac_gamma sac Γ > sac_delta sac Γ avars (map weakCK' Δ)
> (mapOptionTree weakLT' pcb_freevars),,(unleaves (map (fun t => t@@weakL' lev)
(vec2list (sac_types sac Γ avars))))
- |- [weakT' branchtype ] @ weakL' lev
-}.
-Implicit Arguments ProofCaseBranch [ ].
+ |- [weakT' branchtype ] @ weakL' lev.
(* Figure 3, production $\vdash_E$, all rules *)
Inductive Rule : Tree ??Judg -> Tree ??Judg -> Type :=
| RLetRec : forall Γ Δ Σ₁ τ₁ τ₂ lev, Rule [Γ > Δ > (τ₂@@@lev),,Σ₁ |- (τ₂,,[τ₁]) @lev ] [Γ > Δ > Σ₁ |- [τ₁] @lev]
| RCase : forall Γ Δ lev tc Σ avars tbranches
- (alts:Tree ??{ sac : @StrongAltCon tc & @ProofCaseBranch tc Γ Δ lev tbranches avars sac }),
+ (alts:Tree ??( (@StrongAltCon tc) * (Tree ??(LeveledHaskType Γ ★)) )),
Rule
- ((mapOptionTree (fun x => pcb_judg (projT2 x)) alts),,
+ ((mapOptionTree (fun x => @pcb_judg tc Γ Δ lev tbranches avars (fst x) (snd x)) alts),,
[Γ > Δ > Σ |- [ caseType tc avars ] @lev])
- [Γ > Δ > (mapOptionTreeAndFlatten (fun x => pcb_freevars (projT2 x)) alts),,Σ |- [ tbranches ] @ lev]
+ [Γ > Δ > (mapOptionTreeAndFlatten (fun x => (snd x)) alts),,Σ |- [ tbranches ] @ lev]
.
Definition RCut' : ∀ Γ Δ Σ₁ Σ₁₂ Σ₂ Σ₃ l,