Struct rustc_middle::ty::query::on_disk_cache::CacheDecoder

pub(crate) struct CacheDecoder<'a, 'tcx> {
    tcx: TyCtxt<'tcx>,
    opaque: Decoder<'a>,
    source_map: &'a SourceMap,
    cnum_map: &'a IndexVec<CrateNum, Option<CrateNum>>,
    file_index_to_file: &'a Lock<FxHashMap<SourceFileIndex, Lrc<SourceFile>>>,
    file_index_to_stable_id: &'a FxHashMap<SourceFileIndex, StableSourceFileId>,
    alloc_decoding_session: AllocDecodingSession<'a>,
    syntax_contexts: &'a FxHashMap<u32, AbsoluteBytePos>,
    expn_data: &'a FxHashMap<u32, AbsoluteBytePos>,
    hygiene_context: &'a HygieneDecodeContext,
}

A decoder that can read from the incr. comp. cache. It is similar to the one we use for crate metadata decoding in that it can rebase spans and eventually will also handle things that contain Ty instances.

Fields

tcx: TyCtxt<'tcx>

opaque: Decoder<'a>

source_map: &'a SourceMap

cnum_map: &'a IndexVec<CrateNum, Option<CrateNum>>

file_index_to_file: &'a Lock<FxHashMap<SourceFileIndex, Lrc<SourceFile>>>

file_index_to_stable_id: &'a FxHashMap<SourceFileIndex, StableSourceFileId>

alloc_decoding_session: AllocDecodingSession<'a>

syntax_contexts: &'a FxHashMap<u32, AbsoluteBytePos>

expn_data: &'a FxHashMap<u32, AbsoluteBytePos>

hygiene_context: &'a HygieneDecodeContext

Implementations

impl<'a, 'tcx> CacheDecoder<'a, 'tcx>

fn file_index_to_file(&self, index: SourceFileIndex) -> Lrc<SourceFile>

Trait Implementations

impl<'a, 'tcx> Decodable<CacheDecoder<'a, 'tcx>> for SyntaxContext

fn decode(decoder: &mut CacheDecoder<'a, 'tcx>) -> Result<Self, String>

impl<'a, 'tcx> Decodable<CacheDecoder<'a, 'tcx>> for ExpnId

fn decode(decoder: &mut CacheDecoder<'a, 'tcx>) -> Result<Self, String>

impl<'a, 'tcx> Decodable<CacheDecoder<'a, 'tcx>> for &'tcx [InlineAsmTemplatePiece]

fn decode(d: &mut CacheDecoder<'a, 'tcx>) -> Result<Self, String>

impl<'a, 'tcx> Decodable<CacheDecoder<'a, 'tcx>> for &'tcx [Span]

fn decode(d: &mut CacheDecoder<'a, 'tcx>) -> Result<Self, String>

impl<'a, 'tcx> Decodable<CacheDecoder<'a, 'tcx>> for Span

fn decode(decoder: &mut CacheDecoder<'a, 'tcx>) -> Result<Self, String>

impl<'a, 'tcx> Decodable<CacheDecoder<'a, 'tcx>> for CrateNum

fn decode(d: &mut CacheDecoder<'a, 'tcx>) -> Result<Self, String>

impl<'a, 'tcx> Decodable<CacheDecoder<'a, 'tcx>> for DefIndex

fn decode(d: &mut CacheDecoder<'a, 'tcx>) -> Result<DefIndex, String>

impl<'a, 'tcx> Decodable<CacheDecoder<'a, 'tcx>> for DefId

fn decode(d: &mut CacheDecoder<'a, 'tcx>) -> Result<Self, String>

impl<'a, 'tcx> Decodable<CacheDecoder<'a, 'tcx>> for &'tcx FxHashSet<LocalDefId>

fn decode(d: &mut CacheDecoder<'a, 'tcx>) -> Result<Self, String>

impl<'a, 'tcx> Decodable<CacheDecoder<'a, 'tcx>> for &'tcx IndexVec<Promoted, Body<'tcx>>

fn decode(d: &mut CacheDecoder<'a, 'tcx>) -> Result<Self, String>

impl<'a, 'tcx> Decodable<CacheDecoder<'a, 'tcx>> for &'tcx [Node<'tcx>]

fn decode(d: &mut CacheDecoder<'a, 'tcx>) -> Result<Self, String>

impl<'a, 'tcx> Decodable<CacheDecoder<'a, 'tcx>> for &'tcx [(Predicate<'tcx>, Span)]

fn decode(d: &mut CacheDecoder<'a, 'tcx>) -> Result<Self, String>

impl<'a, 'tcx> Decoder for CacheDecoder<'a, 'tcx>

type Error = String

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

fn read_u128(&mut self) -> Result<u128, Self::Error>

fn read_u64(&mut self) -> Result<u64, Self::Error>

fn read_u32(&mut self) -> Result<u32, Self::Error>

fn read_u16(&mut self) -> Result<u16, Self::Error>

fn read_u8(&mut self) -> Result<u8, Self::Error>

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

fn read_i128(&mut self) -> Result<i128, Self::Error>

fn read_i64(&mut self) -> Result<i64, Self::Error>

fn read_i32(&mut self) -> Result<i32, Self::Error>

fn read_i16(&mut self) -> Result<i16, Self::Error>

fn read_i8(&mut self) -> Result<i8, Self::Error>

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

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

fn read_f64(&mut self) -> Result<f64, Self::Error>

fn read_f32(&mut self) -> Result<f32, Self::Error>

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

fn read_str(&mut self) -> Result<Cow<'_, str>, Self::Error>

fn error(&mut self, err: &str) -> Self::Error

fn read_enum<T, F>(&mut self, _name: &str, f: F) -> Result<T, Self::Error> where
    F: FnOnce(&mut Self) -> Result<T, Self::Error>, 

fn read_enum_variant<T, F>(
    &mut self,
    _names: &[&str],
    f: F
) -> Result<T, Self::Error> where
    F: FnMut(&mut Self, usize) -> Result<T, Self::Error>, 

fn read_enum_variant_arg<T, F>(
    &mut self,
    _a_idx: usize,
    f: F
) -> Result<T, Self::Error> where
    F: FnOnce(&mut Self) -> Result<T, Self::Error>, 

fn read_enum_struct_variant<T, F>(
    &mut self,
    names: &[&str],
    f: F
) -> Result<T, Self::Error> where
    F: FnMut(&mut Self, usize) -> Result<T, Self::Error>, 

fn read_enum_struct_variant_field<T, F>(
    &mut self,
    _f_name: &str,
    f_idx: usize,
    f: F
) -> Result<T, Self::Error> where
    F: FnOnce(&mut Self) -> Result<T, Self::Error>, 

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

fn read_struct_field<T, F>(
    &mut self,
    _f_name: &str,
    _f_idx: usize,
    f: F
) -> Result<T, Self::Error> where
    F: FnOnce(&mut Self) -> Result<T, Self::Error>, 

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

fn read_tuple_arg<T, F>(
    &mut self,
    _a_idx: usize,
    f: F
) -> Result<T, Self::Error> where
    F: FnOnce(&mut Self) -> Result<T, Self::Error>, 

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

fn read_tuple_struct_arg<T, F>(
    &mut self,
    a_idx: usize,
    f: F
) -> Result<T, Self::Error> where
    F: FnOnce(&mut Self) -> Result<T, Self::Error>, 

fn read_option<T, F>(&mut self, f: F) -> Result<T, Self::Error> where
    F: FnMut(&mut Self, bool) -> Result<T, Self::Error>, 

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

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

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

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

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

impl<'a, 'tcx> DecoderWithPosition for CacheDecoder<'a, 'tcx>

fn position(&self) -> usize

impl<'a, 'tcx> FingerprintDecoder for CacheDecoder<'a, 'tcx>

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

impl<'a, 'tcx> TyDecoder<'tcx> for CacheDecoder<'a, 'tcx>

const CLEAR_CROSS_CRATE: bool

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

fn position(&self) -> usize

fn peek_byte(&self) -> u8

fn cached_ty_for_shorthand<F>(
    &mut self,
    shorthand: usize,
    or_insert_with: F
) -> Result<Ty<'tcx>, Self::Error> where
    F: FnOnce(&mut Self) -> Result<Ty<'tcx>, Self::Error>, 

fn with_position<F, R>(&mut self, pos: usize, f: F) -> R where
    F: FnOnce(&mut Self) -> R, 

fn map_encoded_cnum_to_current(&self, cnum: CrateNum) -> CrateNum

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

fn positioned_at_shorthand(&self) -> bool