Trait rustc_ap_rustc_span::HashStableContext[−][src]

pub trait HashStableContext {
    fn def_path_hash(&self, def_id: DefId) -> DefPathHash;

    fn expn_id_cache() -> &'static LocalKey<ExpnIdCache>;

    fn hash_spans(&self) -> bool;

    fn span_data_to_lines_and_cols(
        &mut self, 
        span: &SpanData
    ) -> Option<(Lrc<SourceFile>, usize, BytePos, usize, BytePos)>;
}
Expand description

Requirements for a StableHashingContext to be used in this crate.

This is a hack to allow using the HashStable_Generic derive macro instead of implementing everything in rustc_middle.

Required methods

Obtains a cache for storing the Fingerprint of an ExpnId. This method allows us to have multiple HashStableContext implementations that hash things in a different way, without the results of one polluting the cache of the other.

Implementors