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Rollup merge of #136445 - bjorn3:diag_ctxt_cleanup, r=oli-obk

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Couple of cleanups to DiagCtxt and EarlyDiagCtxt
This commit is contained in:
Matthias Krüger 2025-02-02 23:06:57 +01:00 • committed by GitHub
commit f1bdf3ba4a
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13 changed files with 63 additions and 111 deletions
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53
compiler/rustc_errors/src/lib.rs
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@ -59,7 +59,7 @@ use emitter::{DynEmitter, Emitter, is_case_difference, is_different};
use rustc_data_structures::AtomicRef;
use rustc_data_structures::fx::{FxHashSet, FxIndexMap, FxIndexSet};
use rustc_data_structures::stable_hasher::{Hash128, StableHasher};
use rustc_data_structures::sync::Lock;
use rustc_data_structures::sync::{DynSend, Lock};
pub use rustc_error_messages::{
DiagMessage, FluentBundle, LanguageIdentifier, LazyFallbackBundle, MultiSpan, SpanLabel,
SubdiagMessage, fallback_fluent_bundle, fluent_bundle,
@ -676,57 +676,44 @@ impl DiagCtxt {
Self { inner: Lock::new(DiagCtxtInner::new(emitter)) }
}
pub fn make_silent(
&self,
fallback_bundle: LazyFallbackBundle,
fatal_note: Option<String>,
emit_fatal_diagnostic: bool,
) {
self.wrap_emitter(|old_dcx| {
Box::new(emitter::SilentEmitter {
fallback_bundle,
fatal_dcx: DiagCtxt { inner: Lock::new(old_dcx) },
fatal_note,
emit_fatal_diagnostic,
})
});
}
fn wrap_emitter<F>(&self, f: F)
where
F: FnOnce(DiagCtxtInner) -> Box<DynEmitter>,
{
// A empty type that implements `Emitter` so that a `DiagCtxtInner` can be constructed
// to temporarily swap in place of the real one, which will be used in constructing
// its replacement.
pub fn make_silent(&self, fatal_note: Option<String>, emit_fatal_diagnostic: bool) {
// An empty type that implements `Emitter` to temporarily swap in place of the real one,
// which will be used in constructing its replacement.
struct FalseEmitter;
impl Emitter for FalseEmitter {
fn emit_diagnostic(&mut self, _: DiagInner, _: &Registry) {
unimplemented!("false emitter must only used during `wrap_emitter`")
unimplemented!("false emitter must only used during `make_silent`")
}
fn source_map(&self) -> Option<&SourceMap> {
unimplemented!("false emitter must only used during `wrap_emitter`")
unimplemented!("false emitter must only used during `make_silent`")
}
}
impl translation::Translate for FalseEmitter {
fn fluent_bundle(&self) -> Option<&FluentBundle> {
unimplemented!("false emitter must only used during `wrap_emitter`")
unimplemented!("false emitter must only used during `make_silent`")
}
fn fallback_fluent_bundle(&self) -> &FluentBundle {
unimplemented!("false emitter must only used during `wrap_emitter`")
unimplemented!("false emitter must only used during `make_silent`")
}
}
let mut inner = self.inner.borrow_mut();
let mut prev_dcx = DiagCtxtInner::new(Box::new(FalseEmitter));
std::mem::swap(&mut *inner, &mut prev_dcx);
let new_emitter = f(prev_dcx);
let mut new_dcx = DiagCtxtInner::new(new_emitter);
std::mem::swap(&mut *inner, &mut new_dcx);
let mut prev_emitter = Box::new(FalseEmitter) as Box<dyn Emitter + DynSend>;
std::mem::swap(&mut inner.emitter, &mut prev_emitter);
let new_emitter = Box::new(emitter::SilentEmitter {
fatal_emitter: prev_emitter,
fatal_note,
emit_fatal_diagnostic,
});
inner.emitter = new_emitter;
}
pub fn set_emitter(&self, emitter: Box<dyn Emitter + DynSend>) {
self.inner.borrow_mut().emitter = emitter;
}
/// Translate `message` eagerly with `args` to `SubdiagMessage::Eager`.