Struct rustc_errors::HandlerInner

pub(crate) struct HandlerInner {

    flags: HandlerFlags,
    err_count: usize,
    warn_count: usize,
    deduplicated_err_count: usize,
    emitter: Box<dyn Emitter + Send>,
    delayed_span_bugs: Vec<Diagnostic>,
    delayed_good_path_bugs: Vec<DelayedDiagnostic>,
    taught_diagnostics: FxHashSet<DiagnosticId>,
    emitted_diagnostic_codes: FxHashSet<DiagnosticId>,
    emitted_diagnostics: FxHashSet<u128>,
    stashed_diagnostics: FxIndexMap<(Span, StashKey), Diagnostic>,
    deduplicated_warn_count: usize,
    future_breakage_diagnostics: Vec<Diagnostic>,
}

This inner struct exists to keep it all behind a single lock; this is done to prevent possible deadlocks in a multi-threaded compiler, as well as inconsistent state observation.

Fields

flags: HandlerFlags

err_count: usize

The number of errors that have been emitted, including duplicates.

This is not necessarily the count that’s reported to the user once compilation ends.

warn_count: usize

deduplicated_err_count: usize

emitter: Box<dyn Emitter + Send>

delayed_span_bugs: Vec<Diagnostic>

delayed_good_path_bugs: Vec<DelayedDiagnostic>

taught_diagnostics: FxHashSet<DiagnosticId>

This set contains the DiagnosticId of all emitted diagnostics to avoid emitting the same diagnostic with extended help (--teach) twice, which would be unnecessary repetition.

emitted_diagnostic_codes: FxHashSet<DiagnosticId>

Used to suggest rustc –explain

emitted_diagnostics: FxHashSet<u128>

This set contains a hash of every diagnostic that has been emitted by this handler. These hashes is used to avoid emitting the same error twice.

stashed_diagnostics: FxIndexMap<(Span, StashKey), Diagnostic>

Stashed diagnostics emitted in one stage of the compiler that may be stolen by other stages (e.g. to improve them and add more information). The stashed diagnostics count towards the total error count. When .abort_if_errors() is called, these are also emitted.

deduplicated_warn_count: usize

The warning count, used for a recap upon finishing

future_breakage_diagnostics: Vec<Diagnostic>

Implementations

impl HandlerInner

pub(crate) fn must_teach(&mut self, code: &DiagnosticId) -> bool

pub(crate) fn force_print_diagnostic(&mut self, db: Diagnostic)

pub(crate) fn emit_stashed_diagnostics(&mut self)

Emit all stashed diagnostics.

pub(crate) fn emit_diagnostic(&mut self, diagnostic: &Diagnostic)

pub(crate) fn emit_artifact_notification(
    &mut self,
    path: &Path,
    artifact_type: &str
)

pub(crate) fn emit_unused_externs(
    &mut self,
    lint_level: &str,
    unused_externs: &[&str]
)

pub(crate) fn treat_err_as_bug(&self) -> bool

pub(crate) fn print_error_count(&mut self, registry: &Registry)

pub(crate) fn err_count(&self) -> usize

pub(crate) fn has_errors(&self) -> bool

pub(crate) fn has_errors_or_delayed_span_bugs(&self) -> bool

pub(crate) fn has_any_message(&self) -> bool

pub(crate) fn abort_if_errors(&mut self)

pub(crate) fn span_bug(&mut self, sp: impl Into<MultiSpan>, msg: &str) -> !

pub(crate) fn emit_diag_at_span(
    &mut self,
    diag: Diagnostic,
    sp: impl Into<MultiSpan>
)

pub(crate) fn delay_span_bug(&mut self, sp: impl Into<MultiSpan>, msg: &str)

pub(crate) fn delay_good_path_bug(&mut self, msg: &str)

pub(crate) fn failure(&mut self, msg: &str)

pub(crate) fn fatal(&mut self, msg: &str) -> FatalError

pub(crate) fn err(&mut self, msg: &str)

pub(crate) fn emit_error(&mut self, level: Level, msg: &str)

Emit an error; level should be Error or Fatal.

pub(crate) fn bug(&mut self, msg: &str) -> !

pub(crate) fn delay_as_bug(&mut self, diagnostic: Diagnostic)

pub(crate) fn flush_delayed(&mut self, bugs: Vec<Diagnostic>, explanation: &str)

pub(crate) fn bump_err_count(&mut self)

pub(crate) fn bump_warn_count(&mut self)

pub(crate) fn panic_if_treat_err_as_bug(&self)

Trait Implementations

impl Drop for HandlerInner

fn drop(&mut self)

Executes the destructor for this type.