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

Show 14 methods fn tcx<'a>(&'a self) -> TyCtxt<'tcx>; fn print_region(
        self,
        region: Region<'tcx>
    ) -> 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<PolyExistentialPredicate<'tcx>>
    ) -> Result<Self::DynExistential, Self::Error>; fn print_const(self, ct: 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 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.

Required Associated Types§

Required Methods§

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fn tcx<'a>(&'a self) -> TyCtxt<'tcx>

source

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

source

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

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

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

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

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

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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>

source

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

source

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

Provided Methods§

source

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

source

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>

source

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

source

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>

Implementors§

source§

impl<'tcx> Printer<'tcx> for FmtPrinter<'_, 'tcx>

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type Error = Error

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type Path = FmtPrinter<'_, 'tcx>

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type Region = FmtPrinter<'_, 'tcx>

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type Type = FmtPrinter<'_, 'tcx>

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type DynExistential = FmtPrinter<'_, 'tcx>

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type Const = FmtPrinter<'_, 'tcx>