Trait rustc_middle::ty::print::Printer[−][src]

pub trait Printer<'tcx>: Sized {
    type Error;
    type Path;
    type Region;
    type Type;
    type DynExistential;
    type Const;

Show 15 methods    fn tcx<'a>(&'a self) -> TyCtxt<'tcx>;

    fn print_region(
        self, 
        region: Region<'_>
    ) -> Result<Self::Region, Self::Error>;

    fn print_type(self, ty: Ty<'tcx>) -> Result<Self::Type, Self::Error>;

    fn print_dyn_existential(
        self, 
        predicates: &'tcx List<Binder<'tcx, ExistentialPredicate<'tcx>>>
    ) -> Result<Self::DynExistential, Self::Error>;

    fn print_const(
        self, 
        ct: &'tcx Const<'tcx>
    ) -> Result<Self::Const, Self::Error>;

    fn path_crate(self, cnum: CrateNum) -> Result<Self::Path, Self::Error>;

    fn path_qualified(
        self, 
        self_ty: Ty<'tcx>, 
        trait_ref: Option<TraitRef<'tcx>>
    ) -> Result<Self::Path, Self::Error>;

    fn path_append_impl(
        self, 
        print_prefix: impl FnOnce(Self) -> Result<Self::Path, Self::Error>, 
        disambiguated_data: &DisambiguatedDefPathData, 
        self_ty: Ty<'tcx>, 
        trait_ref: Option<TraitRef<'tcx>>
    ) -> Result<Self::Path, Self::Error>;

    fn path_append(
        self, 
        print_prefix: impl FnOnce(Self) -> Result<Self::Path, Self::Error>, 
        disambiguated_data: &DisambiguatedDefPathData
    ) -> Result<Self::Path, Self::Error>;

    fn path_generic_args(
        self, 
        print_prefix: impl FnOnce(Self) -> Result<Self::Path, Self::Error>, 
        args: &[GenericArg<'tcx>]
    ) -> Result<Self::Path, Self::Error>;

    fn print_def_path(
        self, 
        def_id: DefId, 
        substs: &'tcx [GenericArg<'tcx>]
    ) -> Result<Self::Path, Self::Error> { ... }

    fn print_impl_path(
        self, 
        impl_def_id: DefId, 
        substs: &'tcx [GenericArg<'tcx>], 
        self_ty: Ty<'tcx>, 
        trait_ref: Option<TraitRef<'tcx>>
    ) -> Result<Self::Path, Self::Error> { ... }

    fn default_print_def_path(
        self, 
        def_id: DefId, 
        substs: &'tcx [GenericArg<'tcx>]
    ) -> Result<Self::Path, Self::Error> { ... }

    fn generic_args_to_print(
        &self, 
        generics: &'tcx Generics, 
        substs: &'tcx [GenericArg<'tcx>]
    ) -> &'tcx [GenericArg<'tcx>] { ... }

    fn default_print_impl_path(
        self, 
        impl_def_id: DefId, 
        _substs: &'tcx [GenericArg<'tcx>], 
        self_ty: Ty<'tcx>, 
        impl_trait_ref: Option<TraitRef<'tcx>>
    ) -> Result<Self::Path, Self::Error> { ... }

}
Expand description

Interface for outputting user-facing “type-system entities” (paths, types, lifetimes, constants, etc.) as a side-effect (e.g. formatting, like PrettyPrinter implementors do) or by constructing some alternative representation (e.g. an AST), which the associated types allow passing through the methods.

For pretty-printing/formatting in particular, see PrettyPrinter.

Associated Types

Required methods

Provided methods

Implementors