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Rollup merge of #121014 - nnethercote:rm-force_print_diagnostic, r=ol…
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…i-obk

Remove `force_print_diagnostic`

More diagnostic cleanups, best reviewed one at a time.

r? `@oli-obk`
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@matthiaskrgr
matthiaskrgr authored Feb 13, 2024
2 parents 8f9779f + 56b451a commit 8c0d54f
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Showing 2 changed files with 80 additions and 45 deletions.
105 changes: 70 additions & 35 deletions compiler/rustc_errors/src/lib.rs
View file
Original file line number Diff line number Diff line change
Expand Up @@ -78,6 +78,7 @@ use std::fmt;
use std::hash::Hash;
use std::io::Write;
use std::num::NonZeroUsize;
use std::ops::DerefMut;
use std::panic;
use std::path::{Path, PathBuf};

Expand Down Expand Up @@ -666,22 +667,51 @@ impl DiagCtxt {
/// tools that want to reuse a `Parser` cleaning the previously emitted diagnostics as well as
/// the overall count of emitted error diagnostics.
pub fn reset_err_count(&self) {
// Use destructuring so that if a field gets added to `DiagCtxtInner`, it's impossible to
// fail to update this method as well.
let mut inner = self.inner.borrow_mut();
inner.stashed_err_count = 0;
inner.deduplicated_err_count = 0;
inner.deduplicated_warn_count = 0;
inner.must_produce_diag = false;
inner.has_printed = false;
inner.suppressed_expected_diag = false;

// actually free the underlying memory (which `clear` would not do)
inner.err_guars = Default::default();
inner.lint_err_guars = Default::default();
inner.delayed_bugs = Default::default();
inner.taught_diagnostics = Default::default();
inner.emitted_diagnostic_codes = Default::default();
inner.emitted_diagnostics = Default::default();
inner.stashed_diagnostics = Default::default();
let DiagCtxtInner {
flags: _,
err_guars,
lint_err_guars,
delayed_bugs,
stashed_err_count,
deduplicated_err_count,
deduplicated_warn_count,
emitter: _,
must_produce_diag,
has_printed,
suppressed_expected_diag,
taught_diagnostics,
emitted_diagnostic_codes,
emitted_diagnostics,
stashed_diagnostics,
future_breakage_diagnostics,
check_unstable_expect_diagnostics,
unstable_expect_diagnostics,
fulfilled_expectations,
ice_file: _,
} = inner.deref_mut();

// For the `Vec`s and `HashMap`s, we overwrite with an empty container to free the
// underlying memory (which `clear` would not do).
*err_guars = Default::default();
*lint_err_guars = Default::default();
*delayed_bugs = Default::default();
*stashed_err_count = 0;
*deduplicated_err_count = 0;
*deduplicated_warn_count = 0;
*must_produce_diag = false;
*has_printed = false;
*suppressed_expected_diag = false;
*taught_diagnostics = Default::default();
*emitted_diagnostic_codes = Default::default();
*emitted_diagnostics = Default::default();
*stashed_diagnostics = Default::default();
*future_breakage_diagnostics = Default::default();
*check_unstable_expect_diagnostics = false;
*unstable_expect_diagnostics = Default::default();
*fulfilled_expectations = Default::default();
}

/// Stash a given diagnostic with the given `Span` and [`StashKey`] as the key.
Expand Down Expand Up @@ -780,11 +810,12 @@ impl DiagCtxt {
match (errors.len(), warnings.len()) {
(0, 0) => return,
(0, _) => {
// Use `inner.emitter` directly, otherwise the warning might not be emitted, e.g.
// with a configuration like `--cap-lints allow --force-warn bare_trait_objects`.
inner
.emitter
.emit_diagnostic(Diagnostic::new(Warning, DiagnosticMessage::Str(warnings)));
// Use `ForceWarning` rather than `Warning` to guarantee emission, e.g. with a
// configuration like `--cap-lints allow --force-warn bare_trait_objects`.
inner.emit_diagnostic(Diagnostic::new(
ForceWarning(None),
DiagnosticMessage::Str(warnings),
));
}
(_, 0) => {
inner.emit_diagnostic(Diagnostic::new(Error, errors));
Expand Down Expand Up @@ -812,20 +843,23 @@ impl DiagCtxt {
error_codes.sort();
if error_codes.len() > 1 {
let limit = if error_codes.len() > 9 { 9 } else { error_codes.len() };
inner.failure_note(format!(
let msg1 = format!(
"Some errors have detailed explanations: {}{}",
error_codes[..limit].join(", "),
if error_codes.len() > 9 { "..." } else { "." }
));
inner.failure_note(format!(
);
let msg2 = format!(
"For more information about an error, try `rustc --explain {}`.",
&error_codes[0]
));
);
inner.emit_diagnostic(Diagnostic::new(FailureNote, msg1));
inner.emit_diagnostic(Diagnostic::new(FailureNote, msg2));
} else {
inner.failure_note(format!(
let msg = format!(
"For more information about this error, try `rustc --explain {}`.",
&error_codes[0]
));
);
inner.emit_diagnostic(Diagnostic::new(FailureNote, msg));
}
}
}
Expand All @@ -848,10 +882,6 @@ impl DiagCtxt {
self.inner.borrow_mut().taught_diagnostics.insert(code)
}

pub fn force_print_diagnostic(&self, db: Diagnostic) {
self.inner.borrow_mut().emitter.emit_diagnostic(db);
}

pub fn emit_diagnostic(&self, diagnostic: Diagnostic) -> Option<ErrorGuaranteed> {
self.inner.borrow_mut().emit_diagnostic(diagnostic)
}
Expand Down Expand Up @@ -1179,7 +1209,7 @@ impl DiagCtxt {
span: impl Into<MultiSpan>,
msg: impl Into<DiagnosticMessage>,
) -> DiagnosticBuilder<'_, ()> {
DiagnosticBuilder::new(self, Note, msg).with_span(span)
self.struct_note(msg).with_span(span)
}

#[rustc_lint_diagnostics]
Expand Down Expand Up @@ -1207,6 +1237,15 @@ impl DiagCtxt {
DiagnosticBuilder::new(self, Help, msg)
}

#[rustc_lint_diagnostics]
#[track_caller]
pub fn struct_failure_note(
&self,
msg: impl Into<DiagnosticMessage>,
) -> DiagnosticBuilder<'_, ()> {
DiagnosticBuilder::new(self, FailureNote, msg)
}

#[rustc_lint_diagnostics]
#[track_caller]
pub fn struct_allow(&self, msg: impl Into<DiagnosticMessage>) -> DiagnosticBuilder<'_, ()> {
Expand Down Expand Up @@ -1406,10 +1445,6 @@ impl DiagCtxtInner {
.or_else(|| self.delayed_bugs.get(0).map(|(_, guar)| guar).copied())
}

fn failure_note(&mut self, msg: impl Into<DiagnosticMessage>) {
self.emit_diagnostic(Diagnostic::new(FailureNote, msg));
}

fn flush_delayed(&mut self) {
if self.delayed_bugs.is_empty() {
return;
Expand Down
20 changes: 10 additions & 10 deletions compiler/rustc_query_system/src/query/job.rs
View file
Original file line number Diff line number Diff line change
Expand Up @@ -4,7 +4,7 @@ use crate::query::plumbing::CycleError;
use crate::query::DepKind;
use crate::query::{QueryContext, QueryStackFrame};
use rustc_data_structures::fx::FxHashMap;
use rustc_errors::{DiagCtxt, Diagnostic, DiagnosticBuilder, Level};
use rustc_errors::{DiagCtxt, DiagnosticBuilder};
use rustc_hir::def::DefKind;
use rustc_session::Session;
use rustc_span::Span;
Expand Down Expand Up @@ -628,15 +628,15 @@ pub fn print_query_stack<Qcx: QueryContext>(
};
if Some(count_printed) < num_frames || num_frames.is_none() {
// Only print to stderr as many stack frames as `num_frames` when present.
let mut diag = Diagnostic::new(
Level::FailureNote,
format!(
"#{} [{:?}] {}",
count_printed, query_info.query.dep_kind, query_info.query.description
),
);
diag.span = query_info.job.span.into();
dcx.force_print_diagnostic(diag);
// FIXME: needs translation
#[allow(rustc::diagnostic_outside_of_impl)]
#[allow(rustc::untranslatable_diagnostic)]
dcx.struct_failure_note(format!(
"#{} [{:?}] {}",
count_printed, query_info.query.dep_kind, query_info.query.description
))
.with_span(query_info.job.span)
.emit();
count_printed += 1;
}

Expand Down

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