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use rustc_data_structures::sync::Lrc;
use crate::infer::canonical::{Canonical, QueryResponse};
use crate::ty::Ty;
#[derive(Debug)]
pub struct CandidateStep<'tcx> {
pub self_ty: Canonical<'tcx, QueryResponse<'tcx, Ty<'tcx>>>,
pub autoderefs: usize,
// true if the type results from a dereference of a raw pointer.
// when assembling candidates, we include these steps, but not when
// picking methods. This so that if we have `foo: *const Foo` and `Foo` has methods
// `fn by_raw_ptr(self: *const Self)` and `fn by_ref(&self)`, then
// `foo.by_raw_ptr()` will work and `foo.by_ref()` won't.
pub from_unsafe_deref: bool,
pub unsize: bool,
}
#[derive(Clone, Debug)]
pub struct MethodAutoderefStepsResult<'tcx> {
/// The valid autoderef steps that could be find.
pub steps: Lrc<Vec<CandidateStep<'tcx>>>,
/// If Some(T), a type autoderef reported an error on.
pub opt_bad_ty: Option<Lrc<MethodAutoderefBadTy<'tcx>>>,
/// If `true`, `steps` has been truncated due to reaching the
/// recursion limit.
pub reached_recursion_limit: bool,
}
#[derive(Debug)]
pub struct MethodAutoderefBadTy<'tcx> {
pub reached_raw_pointer: bool,
pub ty: Canonical<'tcx, QueryResponse<'tcx, Ty<'tcx>>>,
}
impl_stable_hash_for!(struct MethodAutoderefBadTy<'tcx> {
reached_raw_pointer, ty
});
impl_stable_hash_for!(struct MethodAutoderefStepsResult<'tcx> {
reached_recursion_limit, steps, opt_bad_ty
});
impl_stable_hash_for!(struct CandidateStep<'tcx> {
self_ty, autoderefs, from_unsafe_deref, unsize
});
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