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use std::ops::Deref; use super::abc::Type; #[derive(Debug)] pub struct BType( pub Box<Type> ); impl Into<BType> for Box<Type> { fn into(self) -> BType { BType(self) } } impl <T> From<T> for BType where T: Type + 'static { fn from(b: T) -> Self { BType(box b) } } impl Deref for BType { type Target = Box<Type>; fn deref(&self) -> &Self::Target { &self.0 } } impl Clone for BType { fn clone(&self) -> Self { self.iclone() } }