Struct FmtPrinter 

pub struct FmtPrinter<'a, 'tcx>(Box<FmtPrinterData<'a, 'tcx>>);

Tuple Fields

0: Box<FmtPrinterData<'a, 'tcx>>

Implementations

impl<'a, 'tcx> FmtPrinter<'a, 'tcx>

pub fn new(tcx: TyCtxt<'tcx>, ns: Namespace) -> Self

pub fn print_string( tcx: TyCtxt<'tcx>, ns: Namespace, f: impl FnOnce(&mut Self) -> Result<(), PrintError>, ) -> Result<String, PrintError>

pub fn new_with_limit( tcx: TyCtxt<'tcx>, ns: Namespace, type_length_limit: Limit, ) -> Self

pub fn into_buffer(self) -> String

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

pub fn pretty_print_region(&mut self, region: Region<'tcx>) -> Result<(), Error>

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

pub fn name_all_regions<T>( &mut self, value: &Binder<'tcx, T>, mode: WrapBinderMode, ) -> Result<(T, UnordMap<BoundRegion, Region<'tcx>>), Error>

where T: TypeFoldable<TyCtxt<'tcx>>,

fn prepare_region_info<T>(&mut self, value: &Binder<'tcx, T>)

where T: TypeFoldable<TyCtxt<'tcx>>,

Trait Implementations

impl<'a, 'tcx> Deref for FmtPrinter<'a, 'tcx>

type Target = FmtPrinterData<'a, 'tcx>

The resulting type after dereferencing.

fn deref(&self) -> &Self::Target

Dereferences the value.

impl DerefMut for FmtPrinter<'_, '_>

fn deref_mut(&mut self) -> &mut Self::Target

Mutably dereferences the value.

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

fn ty_infer_name(&self, id: TyVid) -> Option<Symbol>

fn reset_type_limit(&mut self)

fn const_infer_name(&self, id: ConstVid) -> Option<Symbol>

fn pretty_print_value_path( &mut self, def_id: DefId, args: &'tcx [GenericArg<'tcx>], ) -> Result<(), PrintError>

Like print_def_path but for value paths.

fn pretty_print_in_binder<T>( &mut self, value: &Binder<'tcx, T>, ) -> Result<(), PrintError>

where T: Print<'tcx, Self> + TypeFoldable<TyCtxt<'tcx>>,

fn wrap_binder<T, C: FnOnce(&T, &mut Self) -> Result<(), PrintError>>( &mut self, value: &Binder<'tcx, T>, mode: WrapBinderMode, f: C, ) -> Result<(), PrintError>

where T: TypeFoldable<TyCtxt<'tcx>>,

fn typed_value( &mut self, f: impl FnOnce(&mut Self) -> Result<(), PrintError>, t: impl FnOnce(&mut Self) -> Result<(), PrintError>, conversion: &str, ) -> Result<(), PrintError>

Prints {f: t} or {f as t} depending on the cast argument

fn generic_delimiters( &mut self, f: impl FnOnce(&mut Self) -> Result<(), PrintError>, ) -> Result<(), PrintError>

Prints <...> around what f prints.

fn should_truncate(&mut self) -> bool

fn should_print_optional_region(&self, region: Region<'tcx>) -> bool

Returns true if the region should be printed in optional positions, e.g., &'a T or dyn Tr + 'b. (Regions like the one in Cow<'static, T> will always be printed.)

fn pretty_print_const_pointer<Prov: Provenance>( &mut self, p: Pointer<Prov>, ty: Ty<'tcx>, ) -> Result<(), PrintError>

This is overridden for MIR printing because we only want to hide alloc ids from users, not from MIR where it is actually useful.

fn comma_sep<T>( &mut self, elems: impl Iterator<Item = T>, ) -> Result<(), PrintError>

where T: Print<'tcx, Self>,

Prints comma-separated elements.

fn parenthesized( &mut self, f: impl FnOnce(&mut Self) -> Result<(), PrintError>, ) -> Result<(), PrintError>

Prints (...) around what f prints.

fn maybe_parenthesized( &mut self, f: impl FnOnce(&mut Self) -> Result<(), PrintError>, parenthesized: bool, ) -> Result<(), PrintError>

Prints (...) around what f prints if parenthesized is true, otherwise just prints f.

fn try_print_visible_def_path( &mut self, def_id: DefId, ) -> Result<bool, PrintError>

If possible, this returns a global path resolving to def_id that is visible from at least one local module, and returns true. If the crate defining def_id is declared with an extern crate, the path is guaranteed to use the extern crate.

fn force_print_trimmed_def_path( &mut self, def_id: DefId, ) -> Result<bool, PrintError>

fn try_print_trimmed_def_path( &mut self, def_id: DefId, ) -> Result<bool, PrintError>

Try to see if this path can be trimmed to a unique symbol name.

fn try_print_visible_def_path_recur( &mut self, def_id: DefId, callers: &mut Vec<DefId>, ) -> Result<bool, PrintError>

Does the work of try_print_visible_def_path, building the full definition path recursively before attempting to post-process it into the valid and visible version that accounts for re-exports.

fn pretty_print_path_with_qualified( &mut self, self_ty: Ty<'tcx>, trait_ref: Option<TraitRef<'tcx>>, ) -> Result<(), PrintError>

fn pretty_print_path_with_impl( &mut self, print_prefix: impl FnOnce(&mut Self) -> Result<(), PrintError>, self_ty: Ty<'tcx>, trait_ref: Option<TraitRef<'tcx>>, ) -> Result<(), PrintError>

fn pretty_print_type(&mut self, ty: Ty<'tcx>) -> Result<(), PrintError>

fn pretty_print_opaque_impl_type( &mut self, def_id: DefId, args: GenericArgsRef<'tcx>, ) -> Result<(), PrintError>

fn insert_trait_and_projection( &mut self, trait_pred: PolyTraitPredicate<'tcx>, proj_ty: Option<(DefId, Binder<'tcx, Term<'tcx>>)>, traits: &mut FxIndexMap<PolyTraitPredicate<'tcx>, FxIndexMap<DefId, Binder<'tcx, Term<'tcx>>>>, fn_traits: &mut FxIndexMap<(Binder<'tcx, (&'tcx List<Ty<'tcx>>, Ty<'tcx>)>, bool), OpaqueFnEntry<'tcx>>, )

Insert the trait ref and optionally a projection type associated with it into either the traits map or fn_traits map, depending on if the trait is in the Fn* family of traits.

fn pretty_print_inherent_projection( &mut self, alias_ty: AliasTerm<'tcx>, ) -> Result<(), PrintError>

fn pretty_print_rpitit( &mut self, def_id: DefId, args: GenericArgsRef<'tcx>, ) -> Result<(), PrintError>

fn pretty_print_dyn_existential( &mut self, predicates: &'tcx List<PolyExistentialPredicate<'tcx>>, ) -> Result<(), PrintError>

fn pretty_print_fn_sig( &mut self, inputs: &[Ty<'tcx>], c_variadic: bool, output: Ty<'tcx>, ) -> Result<(), PrintError>

fn pretty_print_const( &mut self, ct: Const<'tcx>, print_ty: bool, ) -> Result<(), PrintError>

fn pretty_print_const_expr( &mut self, expr: Expr<'tcx>, print_ty: bool, ) -> Result<(), PrintError>

fn pretty_print_const_scalar( &mut self, scalar: Scalar, ty: Ty<'tcx>, ) -> Result<(), PrintError>

fn pretty_print_const_scalar_ptr( &mut self, ptr: Pointer, ty: Ty<'tcx>, ) -> Result<(), PrintError>

fn pretty_print_const_scalar_int( &mut self, int: ScalarInt, ty: Ty<'tcx>, print_ty: bool, ) -> Result<(), PrintError>

fn pretty_print_byte_str( &mut self, byte_str: &'tcx [u8], ) -> Result<(), PrintError>

fn pretty_print_const_valtree( &mut self, cv: Value<'tcx>, print_ty: bool, ) -> Result<(), PrintError>

fn pretty_print_closure_as_impl( &mut self, closure: ClosureArgs<TyCtxt<'tcx>>, ) -> Result<(), PrintError>

fn pretty_print_bound_constness( &mut self, constness: BoundConstness, ) -> Result<(), PrintError>

fn should_print_verbose(&self) -> bool

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

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

fn print_def_path( &mut self, def_id: DefId, args: &'tcx [GenericArg<'tcx>], ) -> Result<(), PrintError>

Appends a representation of an entity with a normal path, e.g. “std::io::Read”.

fn print_region(&mut self, region: Region<'tcx>) -> Result<(), PrintError>

Appends a representation of a region.

fn print_type(&mut self, ty: Ty<'tcx>) -> Result<(), PrintError>

Appends a representation of a type.

fn print_dyn_existential( &mut self, predicates: &'tcx List<PolyExistentialPredicate<'tcx>>, ) -> Result<(), PrintError>

Appends a representation of a list of PolyExistentialPredicates.

fn print_const(&mut self, ct: Const<'tcx>) -> Result<(), PrintError>

Appends a representation of a const.

fn print_crate_name(&mut self, cnum: CrateNum) -> Result<(), PrintError>

Appends a representation of a crate name, e.g. std, or even ``.

fn print_path_with_qualified( &mut self, self_ty: Ty<'tcx>, trait_ref: Option<TraitRef<'tcx>>, ) -> Result<(), PrintError>

Appends a representation of a qualified path segment, e.g. <OsString as From<&T>>. If trait_ref is None, it may fall back to simpler forms, e.g. <Vec<T>> or just Foo.

fn print_path_with_impl( &mut self, print_prefix: impl FnOnce(&mut Self) -> Result<(), PrintError>, self_ty: Ty<'tcx>, trait_ref: Option<TraitRef<'tcx>>, ) -> Result<(), PrintError>

Similar to print_path_with_simple, but the final segment is an impl segment.

fn print_path_with_simple( &mut self, print_prefix: impl FnOnce(&mut Self) -> Result<(), PrintError>, disambiguated_data: &DisambiguatedDefPathData, ) -> Result<(), PrintError>

Appends a representation of a (full or partial) simple path, in two parts. print_prefix, when called, appends the representation of the leading segments. The rest of the method appends the representation of the final segment, the details of which are in disambiguated_data.

fn print_path_with_generic_args( &mut self, print_prefix: impl FnOnce(&mut Self) -> Result<(), PrintError>, args: &[GenericArg<'tcx>], ) -> Result<(), PrintError>

Appends a representation of a path ending in generic args, in two parts. print_prefix, when called, appends the leading segments. The rest of the method appends the representation of the generic args. (Some printers choose to skip appending the generic args.)

fn print_impl_path( &mut self, impl_def_id: DefId, args: &'tcx [GenericArg<'tcx>], ) -> Result<(), PrintError>

Like print_def_path, but for DefPathData::Impl.

fn print_coroutine_with_kind( &mut self, def_id: DefId, parent_args: &'tcx [GenericArg<'tcx>], kind: Ty<'tcx>, ) -> Result<(), PrintError>

fn default_print_def_path( &mut self, def_id: DefId, args: &'tcx [GenericArg<'tcx>], ) -> Result<(), PrintError>

fn default_print_impl_path( &mut self, impl_def_id: DefId, self_ty: Ty<'tcx>, impl_trait_ref: Option<TraitRef<'tcx>>, ) -> Result<(), PrintError>

impl Write for FmtPrinter<'_, '_>

fn write_str(&mut self, s: &str) -> Result

Writes a string slice into this writer, returning whether the write succeeded.

fn write_char(&mut self, c: char) -> Result<(), Error>

Writes a char into this writer, returning whether the write succeeded.

fn write_fmt(&mut self, args: Arguments<'_>) -> Result<(), Error>

Glue for usage of the write! macro with implementors of this trait.

Layout

Note: Most layout information is completely unstable and may even differ between compilations. The only exception is types with certain repr(...) attributes. Please see the Rust Reference's “Type Layout” chapter for details on type layout guarantees.

Size: 8 bytes