}
pub fn require(&self, it: LangItem) -> Result<DefId, String> {
- self.items[it as usize].ok_or(format!("requires `{}` lang_item", it.name()))
+ self.items[it as usize].ok_or_else(|| format!("requires `{}` lang_item", it.name()))
}
pub fn fn_trait_kind(&self, id: DefId) -> Option<ty::ClosureKind> {
match Some(id) {
x if x == self.fn_trait() => Some(ty::ClosureKind::Fn),
x if x == self.fn_mut_trait() => Some(ty::ClosureKind::FnMut),
- x if x == self.fn_once_trait() => Some(ty::ClosureKind::FnOnce),
+ x if x == self.fn_once_trait() => Some(ty::ClosureKind::FnOnce),
_ => None
}
}