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Allow drivers to supply a list of extra symbols to intern

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This commit is contained in:
Alex Macleod 2025-03-19 02:19:33 +00:00
parent 87e60a7d28
commit f740326216
23 changed files with 115 additions and 58 deletions
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12
compiler/rustc_middle/src/query/on_disk_cache.rs
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@ -45,7 +45,7 @@ const TAG_EXPN_DATA: u8 = 1;
// Tags for encoding Symbol's
const SYMBOL_STR: u8 = 0;
const SYMBOL_OFFSET: u8 = 1;
const SYMBOL_PREINTERNED: u8 = 2;
const SYMBOL_PREDEFINED: u8 = 2;
/// Provides an interface to incremental compilation data cached from the
/// previous compilation session. This data will eventually include the results
@ -673,9 +673,9 @@ impl<'a, 'tcx> SpanDecoder for CacheDecoder<'a, 'tcx> {
Symbol::intern(s)
})
}
SYMBOL_PREINTERNED => {
SYMBOL_PREDEFINED => {
let symbol_index = self.read_u32();
Symbol::new_from_decoded(symbol_index)
Symbol::new(symbol_index)
}
_ => unreachable!(),
}
@ -891,9 +891,9 @@ impl<'a, 'tcx> SpanEncoder for CacheEncoder<'a, 'tcx> {
// copy&paste impl from rustc_metadata
fn encode_symbol(&mut self, symbol: Symbol) {
// if symbol preinterned, emit tag and symbol index
if symbol.is_preinterned() {
self.encoder.emit_u8(SYMBOL_PREINTERNED);
// if symbol predefined, emit tag and symbol index
if symbol.is_predefined() {
self.encoder.emit_u8(SYMBOL_PREDEFINED);
self.encoder.emit_u32(symbol.as_u32());
} else {
// otherwise write it as string or as offset to it