[−][src]Function rustc::ty::is_impl_trait_defn
pub fn is_impl_trait_defn(tcx: TyCtxt, def_id: DefId) -> Option<DefId>
🔬 This is a nightly-only experimental API. (rustc_private
)
this crate is being loaded from the sysroot, an unstable location; did you mean to load this crate from crates.io via Cargo.toml
instead?
Yields the parent function's DefId
if def_id
is an impl Trait
definition