The Fortress Language Specification - CiteSeerX

One owner for all the visible methods: p ⊢ oneOwner(C)
[ONEOWNER]
∀f ∈ visible p (C) . f only occurs once in visible p (C)
p ⊢ oneOwner(C)
Valid where clauses: p ⊢ validWhere(C)
[VALIDWHERE]
∀f ∈ visible p (C) .
where C α −→
−→ extends { N } ∈ p
mbody p (f −→ α f , C −→ α , C −→ α ) = { → e f }, mtype p (f, C −→ α , ∅) = {(η f , ∆)}
1. ∀β ∈ (FTV (e f ) \ { −→ α −→ α f }) . β ∈ FTV (η f )
2. ∀β ∈ (FTV (η f ) \ { −→ α −→ α f }) . ∀C ′ −→ τ c ∈ ⋃ N i ∈{ −→ N defining p(f, N i ) .
}
β = τi c ∆(β) = −→ K i ′ for 1 ≤ i ≤ | −→ −−−−−−−−−−−−→
τ c | where C ′ α ′ extends { −→ K ′ }
p ⊢ validWhere(C)
∈ p
Valid witnesses: p ⊢ validWitness(∆, −−−−−−−→
α