Struct rustc_typeck::check_unused::ExternCrateToLint

pub(in check_unused) struct ExternCrateToLint {
    def_id: DefId,
    span: Span,
    orig_name: Option<Symbol>,
    warn_if_unused: bool,
}

Fields

def_id: DefId

DefId of the extern crate

span: Span

span from the item

orig_name: Option<Symbol>

if Some, then this is renamed (extern crate orig_name as crate_name), and -- perhaps surprisingly -- this stores the original name (item.name will contain the new name)

warn_if_unused: bool

if false, the original name started with _, so we shouldn't lint about it going unused (but we should still emit idiom lints).