[][src]Function rustc_typeck::collect::is_param

fn is_param<'a, 'tcx>(
    tcx: TyCtxt<'a, 'tcx, 'tcx>,
    ast_ty: &Ty,
    param_id: NodeId
) -> bool
🔬 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?

Tests whether this is the AST for a reference to the type parameter with id param_id. We use this so as to avoid running ast_ty_to_ty, because we want to avoid triggering an all-out conversion of the type to avoid inducing unnecessary cycles.