Struct rustc_metadata::rmeta::encoder::EncodeContext

pub(super) struct EncodeContext<'a, 'tcx> {
    opaque: Encoder,
    tcx: TyCtxt<'tcx>,
    feat: &'tcx Features,
    tables: TableBuilders<'tcx>,
    lazy_state: LazyState,
    type_shorthands: FxHashMap<Ty<'tcx>, usize>,
    predicate_shorthands: FxHashMap<PredicateKind<'tcx>, usize>,
    interpret_allocs: FxIndexSet<AllocId>,
    source_file_cache: (Lrc<SourceFile>, usize),
    required_source_files: Option<GrowableBitSet<usize>>,
    is_proc_macro: bool,
    hygiene_ctxt: &'a HygieneEncodeContext,
}

Fields

opaque: Encoder

tcx: TyCtxt<'tcx>

feat: &'tcx Features

tables: TableBuilders<'tcx>

lazy_state: LazyState

type_shorthands: FxHashMap<Ty<'tcx>, usize>

predicate_shorthands: FxHashMap<PredicateKind<'tcx>, usize>

interpret_allocs: FxIndexSet<AllocId>

source_file_cache: (Lrc<SourceFile>, usize)

required_source_files: Option<GrowableBitSet<usize>>

is_proc_macro: bool

hygiene_ctxt: &'a HygieneEncodeContext

Implementations

impl<'a, 'tcx> EncodeContext<'a, 'tcx>

fn emit_lazy_distance<T: ?Sized + LazyMeta>(
    &mut self,
    lazy: Lazy<T>
) -> Result<(), !>

fn lazy<T: ?Sized + LazyMeta>(
    &mut self,
    value: impl EncodeContentsForLazy<'a, 'tcx, T>
) -> Lazy<T>

fn encode_info_for_items(&mut self)

fn encode_def_path_table(&mut self)

fn encode_def_path_hash_map(&mut self) -> Lazy<DefPathHashMapRef<'tcx>>

fn encode_source_map(&mut self) -> Lazy<[SourceFile]>

fn encode_crate_root(&mut self) -> Lazy<CrateRoot<'tcx>>

impl<'a, 'tcx> EncodeContext<'a, 'tcx>

fn encode_def_ids(&mut self)

fn encode_item_type(&mut self, def_id: DefId)

fn encode_enum_variant_info(&mut self, def: &AdtDef, index: VariantIdx)

fn encode_enum_variant_ctor(&mut self, def: &AdtDef, index: VariantIdx)

fn encode_info_for_mod(&mut self, local_def_id: LocalDefId, md: &Mod<'_>)

fn encode_field(
    &mut self,
    adt_def: &AdtDef,
    variant_index: VariantIdx,
    field_index: usize
)

fn encode_struct_ctor(&mut self, adt_def: &AdtDef, def_id: DefId)

fn encode_explicit_item_bounds(&mut self, def_id: DefId)

fn encode_info_for_trait_item(&mut self, def_id: DefId)

fn encode_info_for_impl_item(&mut self, def_id: DefId)

fn encode_fn_param_names_for_body(&mut self, body_id: BodyId) -> Lazy<[Ident]>

fn encode_fn_param_names(&mut self, param_names: &[Ident]) -> Lazy<[Ident]>

fn encode_mir(&mut self)

fn encode_stability(&mut self, def_id: DefId)

fn encode_const_stability(&mut self, def_id: DefId)

fn encode_deprecation(&mut self, def_id: DefId)

fn encode_rendered_const_for_body(
    &mut self,
    body_id: BodyId
) -> Lazy<RenderedConst>

fn encode_info_for_item(&mut self, def_id: DefId, item: &'tcx Item<'tcx>)

fn encode_info_for_generic_param(
    &mut self,
    def_id: DefId,
    kind: EntryKind,
    encode_type: bool
)

fn encode_info_for_closure(&mut self, hir_id: HirId)

fn encode_info_for_anon_const(&mut self, id: HirId)

fn encode_native_libraries(&mut self) -> Lazy<[NativeLib]>

fn encode_foreign_modules(&mut self) -> Lazy<[ForeignModule]>

fn encode_hygiene(
    &mut self
) -> (Lazy<Table<u32, Lazy<SyntaxContextData>>>, Lazy<Table<ExpnIndex, Lazy<ExpnData>>>, Lazy<Table<ExpnIndex, Lazy<ExpnHash>>>)

fn encode_proc_macros(&mut self) -> Option<ProcMacroData>

fn encode_crate_deps(&mut self) -> Lazy<[CrateDep]>

fn encode_lib_features(&mut self) -> Lazy<[(Symbol, Option<Symbol>)]>

fn encode_diagnostic_items(&mut self) -> Lazy<[(Symbol, DefIndex)]>

fn encode_lang_items(&mut self) -> Lazy<[(DefIndex, usize)]>

fn encode_lang_items_missing(&mut self) -> Lazy<[LangItem]>

fn encode_traits(&mut self) -> Lazy<[DefIndex]>

fn encode_impls(&mut self) -> Lazy<[TraitImpls]>

Encodes an index, mapping each trait to its (local) implementations.

fn encode_exported_symbols(
    &mut self,
    exported_symbols: &[(ExportedSymbol<'tcx>, SymbolExportLevel)]
) -> Lazy<[(ExportedSymbol<'tcx>, SymbolExportLevel)]>

fn encode_dylib_dependency_formats(
    &mut self
) -> Lazy<[Option<LinkagePreference>]>

fn encode_info_for_foreign_item(
    &mut self,
    def_id: DefId,
    nitem: &ForeignItem<'_>
)

impl<'a, 'tcx> EncodeContext<'a, 'tcx>

fn encode_fields(&mut self, adt_def: &AdtDef)

fn encode_info_for_generics(&mut self, generics: &Generics<'tcx>)

fn encode_info_for_expr(&mut self, expr: &Expr<'_>)

fn encode_ident_span(&mut self, def_id: DefId, ident: Ident)

fn encode_addl_info_for_item(&mut self, item: &Item<'_>)

In some cases, along with the item itself, we also encode some sub-items. Usually we want some info from the item so it’s easier to do that here then to wait until we would encounter normally in the visitor walk.

Trait Implementations

impl<'tcx, '__a> Encodable<EncodeContext<'__a, 'tcx>> for ProcMacroData

fn encode(&self, __encoder: &mut EncodeContext<'__a, 'tcx>) -> Result<(), !>

impl<'tcx, '__a> Encodable<EncodeContext<'__a, 'tcx>> for CrateRoot<'tcx>

fn encode(&self, __encoder: &mut EncodeContext<'__a, 'tcx>) -> Result<(), !>

impl<'tcx, '__a> Encodable<EncodeContext<'__a, 'tcx>> for TraitImpls

fn encode(&self, __encoder: &mut EncodeContext<'__a, 'tcx>) -> Result<(), !>

impl<'tcx, '__a> Encodable<EncodeContext<'__a, 'tcx>> for LazyTables<'tcx>

fn encode(&self, __encoder: &mut EncodeContext<'__a, 'tcx>) -> Result<(), !>

impl<'tcx, '__a> Encodable<EncodeContext<'__a, 'tcx>> for EntryKind

fn encode(&self, __encoder: &mut EncodeContext<'__a, 'tcx>) -> Result<(), !>

impl<'tcx, '__a> Encodable<EncodeContext<'__a, 'tcx>> for FnData

fn encode(&self, __encoder: &mut EncodeContext<'__a, 'tcx>) -> Result<(), !>

impl<'tcx, '__a> Encodable<EncodeContext<'__a, 'tcx>> for AssocFnData

fn encode(&self, __encoder: &mut EncodeContext<'__a, 'tcx>) -> Result<(), !>

impl<'a, 'tcx> Encodable<EncodeContext<'a, 'tcx>> for DefPathHashMapRef<'tcx>

fn encode(&self, e: &mut EncodeContext<'a, 'tcx>) -> EncodeResult

impl<'a, 'tcx, T: Encodable<EncodeContext<'a, 'tcx>>> Encodable<EncodeContext<'a, 'tcx>> for Lazy<T>

fn encode(&self, e: &mut EncodeContext<'a, 'tcx>) -> EncodeResult

impl<'a, 'tcx> Encodable<EncodeContext<'a, 'tcx>> for &'tcx [Node<'tcx>]

fn encode(&self, s: &mut EncodeContext<'a, 'tcx>) -> EncodeResult

impl<'a, 'tcx> Encodable<EncodeContext<'a, 'tcx>> for &'tcx [(Predicate<'tcx>, Span)]

fn encode(&self, s: &mut EncodeContext<'a, 'tcx>) -> EncodeResult

impl<'a, 'tcx, T: Encodable<EncodeContext<'a, 'tcx>>> Encodable<EncodeContext<'a, 'tcx>> for Lazy<[T]>

fn encode(&self, e: &mut EncodeContext<'a, 'tcx>) -> EncodeResult

impl<'a, 'tcx, I: Idx, T: Encodable<EncodeContext<'a, 'tcx>>> Encodable<EncodeContext<'a, 'tcx>> for Lazy<Table<I, T>> where
    Option<T>: FixedSizeEncoding, 

fn encode(&self, e: &mut EncodeContext<'a, 'tcx>) -> EncodeResult

impl<'a, 'tcx> Encodable<EncodeContext<'a, 'tcx>> for CrateNum

fn encode(&self, s: &mut EncodeContext<'a, 'tcx>) -> EncodeResult

impl<'a, 'tcx> Encodable<EncodeContext<'a, 'tcx>> for DefIndex

fn encode(&self, s: &mut EncodeContext<'a, 'tcx>) -> EncodeResult

impl<'a, 'tcx> Encodable<EncodeContext<'a, 'tcx>> for ExpnIndex

fn encode(&self, s: &mut EncodeContext<'a, 'tcx>) -> EncodeResult

impl<'a, 'tcx> Encodable<EncodeContext<'a, 'tcx>> for SyntaxContext

fn encode(&self, s: &mut EncodeContext<'a, 'tcx>) -> EncodeResult

impl<'a, 'tcx> Encodable<EncodeContext<'a, 'tcx>> for ExpnId

fn encode(&self, s: &mut EncodeContext<'a, 'tcx>) -> EncodeResult

impl<'a, 'tcx> Encodable<EncodeContext<'a, 'tcx>> for Span

fn encode(&self, s: &mut EncodeContext<'a, 'tcx>) -> EncodeResult

impl<'a, 'tcx> Encoder for EncodeContext<'a, 'tcx>

type Error = !

fn emit_unit(&mut self) -> Result<(), Self::Error>

fn emit_usize(&mut self, value: usize) -> Result<(), Self::Error>

fn emit_u128(&mut self, value: u128) -> Result<(), Self::Error>

fn emit_u64(&mut self, value: u64) -> Result<(), Self::Error>

fn emit_u32(&mut self, value: u32) -> Result<(), Self::Error>

fn emit_u16(&mut self, value: u16) -> Result<(), Self::Error>

fn emit_u8(&mut self, value: u8) -> Result<(), Self::Error>

fn emit_isize(&mut self, value: isize) -> Result<(), Self::Error>

fn emit_i128(&mut self, value: i128) -> Result<(), Self::Error>

fn emit_i64(&mut self, value: i64) -> Result<(), Self::Error>

fn emit_i32(&mut self, value: i32) -> Result<(), Self::Error>

fn emit_i16(&mut self, value: i16) -> Result<(), Self::Error>

fn emit_i8(&mut self, value: i8) -> Result<(), Self::Error>

fn emit_bool(&mut self, value: bool) -> Result<(), Self::Error>

fn emit_f64(&mut self, value: f64) -> Result<(), Self::Error>

fn emit_f32(&mut self, value: f32) -> Result<(), Self::Error>

fn emit_char(&mut self, value: char) -> Result<(), Self::Error>

fn emit_str(&mut self, value: &str) -> Result<(), Self::Error>

fn emit_raw_bytes(&mut self, value: &[u8]) -> Result<(), Self::Error>

fn emit_enum<F>(&mut self, f: F) -> Result<(), Self::Error> where
    F: FnOnce(&mut Self) -> Result<(), Self::Error>, 

fn emit_enum_variant<F>(
    &mut self,
    _v_name: &str,
    v_id: usize,
    _len: usize,
    f: F
) -> Result<(), Self::Error> where
    F: FnOnce(&mut Self) -> Result<(), Self::Error>, 

fn emit_fieldless_enum_variant<const ID: usize>(
    &mut self,
    _v_name: &str
) -> Result<(), Self::Error>

fn emit_enum_variant_arg<F>(
    &mut self,
    _first: bool,
    f: F
) -> Result<(), Self::Error> where
    F: FnOnce(&mut Self) -> Result<(), Self::Error>, 

fn emit_struct<F>(&mut self, _no_fields: bool, f: F) -> Result<(), Self::Error> where
    F: FnOnce(&mut Self) -> Result<(), Self::Error>, 

fn emit_struct_field<F>(
    &mut self,
    _f_name: &str,
    _first: bool,
    f: F
) -> Result<(), Self::Error> where
    F: FnOnce(&mut Self) -> Result<(), Self::Error>, 

fn emit_tuple<F>(&mut self, _len: usize, f: F) -> Result<(), Self::Error> where
    F: FnOnce(&mut Self) -> Result<(), Self::Error>, 

fn emit_tuple_arg<F>(&mut self, _idx: usize, f: F) -> Result<(), Self::Error> where
    F: FnOnce(&mut Self) -> Result<(), Self::Error>, 

fn emit_option<F>(&mut self, f: F) -> Result<(), Self::Error> where
    F: FnOnce(&mut Self) -> Result<(), Self::Error>, 

fn emit_option_none(&mut self) -> Result<(), Self::Error>

fn emit_option_some<F>(&mut self, f: F) -> Result<(), Self::Error> where
    F: FnOnce(&mut Self) -> Result<(), Self::Error>, 

fn emit_seq<F>(&mut self, len: usize, f: F) -> Result<(), Self::Error> where
    F: FnOnce(&mut Self) -> Result<(), Self::Error>, 

fn emit_seq_elt<F>(&mut self, _idx: usize, f: F) -> Result<(), Self::Error> where
    F: FnOnce(&mut Self) -> Result<(), Self::Error>, 

fn emit_map<F>(&mut self, len: usize, f: F) -> Result<(), Self::Error> where
    F: FnOnce(&mut Self) -> Result<(), Self::Error>, 

fn emit_map_elt_key<F>(&mut self, _idx: usize, f: F) -> Result<(), Self::Error> where
    F: FnOnce(&mut Self) -> Result<(), Self::Error>, 

fn emit_map_elt_val<F>(&mut self, f: F) -> Result<(), Self::Error> where
    F: FnOnce(&mut Self) -> Result<(), Self::Error>, 

impl<'a, 'tcx> TyEncoder<'tcx> for EncodeContext<'a, 'tcx>

const CLEAR_CROSS_CRATE: bool

fn position(&self) -> usize

fn type_shorthands(&mut self) -> &mut FxHashMap<Ty<'tcx>, usize>

fn predicate_shorthands(&mut self) -> &mut FxHashMap<PredicateKind<'tcx>, usize>

fn encode_alloc_id(&mut self, alloc_id: &AllocId) -> Result<(), Self::Error>

impl<'a, 'tcx> Visitor<'tcx> for EncodeContext<'a, 'tcx>

type NestedFilter = OnlyBodies

fn nested_visit_map(&mut self) -> Self::Map

The default versions of the visit_nested_XXX routines invoke this method to get a map to use. By selecting an enum variant, you control which kinds of nested HIR are visited; see NestedVisitorMap for details. By “nested HIR”, we are referring to bits of HIR that are not directly embedded within one another but rather indirectly, through a table in the crate. This is done to control dependencies during incremental compilation: the non-inline bits of HIR can be tracked and hashed separately.

fn visit_expr(&mut self, ex: &'tcx Expr<'tcx>)

fn visit_anon_const(&mut self, c: &'tcx AnonConst)

fn visit_item(&mut self, item: &'tcx Item<'tcx>)

Visits the top-level item and (optionally) nested items / impl items. See visit_nested_item for details.

fn visit_foreign_item(&mut self, ni: &'tcx ForeignItem<'tcx>)

fn visit_generics(&mut self, generics: &'tcx Generics<'tcx>)

type Map: Map<'v> = <Self::NestedFilter as NestedFilter<'v>>::Map

fn visit_nested_item(&mut self, id: ItemId)

Invoked when a nested item is encountered. By default does nothing unless you override nested_visit_map to return other than None, in which case it will walk the item. You probably don’t want to override this method – instead, override nested_visit_map or use the “shallow” or “deep” visit patterns described on itemlikevisit::ItemLikeVisitor. The only reason to override this method is if you want a nested pattern but cannot supply a Map; see nested_visit_map for advice.

fn visit_nested_trait_item(&mut self, id: TraitItemId)

Like visit_nested_item(), but for trait items. See visit_nested_item() for advice on when to override this method.

fn visit_nested_impl_item(&mut self, id: ImplItemId)

Like visit_nested_item(), but for impl items. See visit_nested_item() for advice on when to override this method.

fn visit_nested_foreign_item(&mut self, id: ForeignItemId)

Like visit_nested_item(), but for foreign items. See visit_nested_item() for advice on when to override this method.

fn visit_nested_body(&mut self, id: BodyId)

Invoked to visit the body of a function, method or closure. Like visit_nested_item, does nothing by default unless you override nested_visit_map to return other than None, in which case it will walk the body.

fn visit_param(&mut self, param: &'v Param<'v>)

fn visit_body(&mut self, b: &'v Body<'v>)

fn as_deep_visitor(&mut self) -> DeepVisitor<'_, Self>

When invoking visit_all_item_likes(), you need to supply an item-like visitor. This method converts an “intra-visit” visitor into an item-like visitor that walks the entire tree. If you use this, you probably don’t want to process the contents of nested item-like things, since the outer loop will visit them as well.

fn visit_id(&mut self, _hir_id: HirId)

fn visit_name(&mut self, _span: Span, _name: Symbol)

fn visit_ident(&mut self, ident: Ident)

fn visit_mod(&mut self, m: &'v Mod<'v>, _s: Span, n: HirId)

fn visit_local(&mut self, l: &'v Local<'v>)

fn visit_block(&mut self, b: &'v Block<'v>)

fn visit_stmt(&mut self, s: &'v Stmt<'v>)

fn visit_arm(&mut self, a: &'v Arm<'v>)

fn visit_pat(&mut self, p: &'v Pat<'v>)

fn visit_array_length(&mut self, len: &'v ArrayLen)

fn visit_let_expr(&mut self, lex: &'v Let<'v>)

fn visit_ty(&mut self, t: &'v Ty<'v>)

fn visit_generic_param(&mut self, p: &'v GenericParam<'v>)

fn visit_const_param_default(&mut self, _param: HirId, ct: &'v AnonConst)

fn visit_where_predicate(&mut self, predicate: &'v WherePredicate<'v>)

fn visit_fn_decl(&mut self, fd: &'v FnDecl<'v>)

fn visit_fn(
    &mut self,
    fk: FnKind<'v>,
    fd: &'v FnDecl<'v>,
    b: BodyId,
    s: Span,
    id: HirId
)

fn visit_use(&mut self, path: &'v Path<'v>, hir_id: HirId)

fn visit_trait_item(&mut self, ti: &'v TraitItem<'v>)

fn visit_trait_item_ref(&mut self, ii: &'v TraitItemRef)

fn visit_impl_item(&mut self, ii: &'v ImplItem<'v>)

fn visit_foreign_item_ref(&mut self, ii: &'v ForeignItemRef)

fn visit_impl_item_ref(&mut self, ii: &'v ImplItemRef)

fn visit_trait_ref(&mut self, t: &'v TraitRef<'v>)

fn visit_param_bound(&mut self, bounds: &'v GenericBound<'v>)

fn visit_poly_trait_ref(
    &mut self,
    t: &'v PolyTraitRef<'v>,
    m: TraitBoundModifier
)

fn visit_variant_data(
    &mut self,
    s: &'v VariantData<'v>,
    Symbol,
    &'v Generics<'v>,
    _parent_id: HirId,
    Span
)

fn visit_field_def(&mut self, s: &'v FieldDef<'v>)

fn visit_enum_def(
    &mut self,
    enum_definition: &'v EnumDef<'v>,
    generics: &'v Generics<'v>,
    item_id: HirId,
    Span
)

fn visit_variant(
    &mut self,
    v: &'v Variant<'v>,
    g: &'v Generics<'v>,
    item_id: HirId
)

fn visit_label(&mut self, label: &'v Label)

fn visit_infer(&mut self, inf: &'v InferArg)

fn visit_generic_arg(&mut self, generic_arg: &'v GenericArg<'v>)

fn visit_lifetime(&mut self, lifetime: &'v Lifetime)

fn visit_qpath(&mut self, qpath: &'v QPath<'v>, id: HirId, span: Span)

fn visit_path(&mut self, path: &'v Path<'v>, _id: HirId)

fn visit_path_segment(
    &mut self,
    path_span: Span,
    path_segment: &'v PathSegment<'v>
)

fn visit_generic_args(
    &mut self,
    path_span: Span,
    generic_args: &'v GenericArgs<'v>
)

fn visit_assoc_type_binding(&mut self, type_binding: &'v TypeBinding<'v>)

fn visit_attribute(&mut self, _id: HirId, _attr: &'v Attribute)

fn visit_vis(&mut self, vis: &'v Spanned<VisibilityKind<'v>>)

fn visit_associated_item_kind(&mut self, kind: &'v AssocItemKind)

fn visit_defaultness(&mut self, defaultness: &'v Defaultness)

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: 984 bytes