Struct rustc_ap_rustc_errors::Handler

pub struct Handler { /* fields omitted */ }

A handler deals with errors and other compiler output. Certain errors (fatal, bug, unimpl) may cause immediate exit, others log errors for later reporting.

Implementations

impl Handler

pub fn with_tty_emitter(
    color_config: ColorConfig,
    can_emit_warnings: bool,
    treat_err_as_bug: Option<NonZeroUsize>,
    sm: Option<Lrc<SourceMap>>
) -> Self

pub fn with_tty_emitter_and_flags(
    color_config: ColorConfig,
    sm: Option<Lrc<SourceMap>>,
    flags: HandlerFlags
) -> Self

pub fn with_emitter(
    can_emit_warnings: bool,
    treat_err_as_bug: Option<NonZeroUsize>,
    emitter: Box<dyn Emitter + Send>
) -> Self

pub fn with_emitter_and_flags(
    emitter: Box<dyn Emitter + Send>,
    flags: HandlerFlags
) -> Self

pub fn can_emit_warnings(&self) -> bool

pub fn reset_err_count(&self)

Resets the diagnostic error count as well as the cached emitted diagnostics.

NOTE: do not call this function from rustc. It is only meant to be called from external tools that want to reuse a Parser cleaning the previously emitted diagnostics as well as the overall count of emitted error diagnostics.

pub fn stash_diagnostic(&self, span: Span, key: StashKey, diag: Diagnostic)

Stash a given diagnostic with the given Span and StashKey as the key for later stealing.

pub fn steal_diagnostic(
    &self,
    span: Span,
    key: StashKey
) -> Option<DiagnosticBuilder<'_>>

Steal a previously stashed diagnostic with the given Span and StashKey as the key.

pub fn emit_stashed_diagnostics(&self)

Emit all stashed diagnostics.

pub fn struct_dummy(&self) -> DiagnosticBuilder<'_>

Construct a dummy builder with Level::Cancelled.

Using this will neither report anything to the user (e.g. a warning), nor will compilation cancel as a result.

pub fn struct_span_warn(
    &self,
    span: impl Into<MultiSpan>,
    msg: &str
) -> DiagnosticBuilder<'_>

Construct a builder at the Warning level at the given span and with the msg.

pub fn struct_span_allow(
    &self,
    span: impl Into<MultiSpan>,
    msg: &str
) -> DiagnosticBuilder<'_>

Construct a builder at the Allow level at the given span and with the msg.

pub fn struct_span_warn_with_code(
    &self,
    span: impl Into<MultiSpan>,
    msg: &str,
    code: DiagnosticId
) -> DiagnosticBuilder<'_>

Construct a builder at the Warning level at the given span and with the msg. Also include a code.

pub fn struct_warn(&self, msg: &str) -> DiagnosticBuilder<'_>

Construct a builder at the Warning level with the msg.

pub fn struct_allow(&self, msg: &str) -> DiagnosticBuilder<'_>

Construct a builder at the Allow level with the msg.

pub fn struct_span_err(
    &self,
    span: impl Into<MultiSpan>,
    msg: &str
) -> DiagnosticBuilder<'_>

Construct a builder at the Error level at the given span and with the msg.

pub fn struct_span_err_with_code(
    &self,
    span: impl Into<MultiSpan>,
    msg: &str,
    code: DiagnosticId
) -> DiagnosticBuilder<'_>

Construct a builder at the Error level at the given span, with the msg, and code.

pub fn struct_err(&self, msg: &str) -> DiagnosticBuilder<'_>

Construct a builder at the Error level with the msg.

pub fn struct_err_with_code(
    &self,
    msg: &str,
    code: DiagnosticId
) -> DiagnosticBuilder<'_>

Construct a builder at the Error level with the msg and the code.

pub fn struct_span_fatal(
    &self,
    span: impl Into<MultiSpan>,
    msg: &str
) -> DiagnosticBuilder<'_>

Construct a builder at the Fatal level at the given span and with the msg.

pub fn struct_span_fatal_with_code(
    &self,
    span: impl Into<MultiSpan>,
    msg: &str,
    code: DiagnosticId
) -> DiagnosticBuilder<'_>

Construct a builder at the Fatal level at the given span, with the msg, and code.

pub fn struct_fatal(&self, msg: &str) -> DiagnosticBuilder<'_>

Construct a builder at the Error level with the msg.

pub fn struct_help(&self, msg: &str) -> DiagnosticBuilder<'_>

Construct a builder at the Help level with the msg.

pub fn struct_note_without_error(&self, msg: &str) -> DiagnosticBuilder<'_>

Construct a builder at the Note level with the msg.

pub fn span_fatal(&self, span: impl Into<MultiSpan>, msg: &str) -> !

pub fn span_fatal_with_code(
    &self,
    span: impl Into<MultiSpan>,
    msg: &str,
    code: DiagnosticId
) -> !

pub fn span_err(&self, span: impl Into<MultiSpan>, msg: &str)

pub fn span_err_with_code(
    &self,
    span: impl Into<MultiSpan>,
    msg: &str,
    code: DiagnosticId
)

pub fn span_warn(&self, span: impl Into<MultiSpan>, msg: &str)

pub fn span_warn_with_code(
    &self,
    span: impl Into<MultiSpan>,
    msg: &str,
    code: DiagnosticId
)

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

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

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

pub fn span_bug_no_panic(&self, span: impl Into<MultiSpan>, msg: &str)

pub fn span_note_without_error(&self, span: impl Into<MultiSpan>, msg: &str)

pub fn span_note_diag(&self, span: Span, msg: &str) -> DiagnosticBuilder<'_>

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

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

pub fn warn(&self, msg: &str)

pub fn note_without_error(&self, msg: &str)

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

pub fn err_count(&self) -> usize

pub fn has_errors(&self) -> bool

pub fn has_errors_or_delayed_span_bugs(&self) -> bool

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

pub fn take_future_breakage_diagnostics(&self) -> Vec<Diagnostic>

pub fn abort_if_errors(&self)

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

true if we haven’t taught a diagnostic with this code already. The caller must then teach the user about such a diagnostic.

Used to suppress emitting the same error multiple times with extended explanation when calling -Zteach.

pub fn force_print_diagnostic(&self, db: Diagnostic)

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

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

pub fn emit_future_breakage_report(
    &self,
    diags: Vec<(FutureBreakage, Diagnostic)>
)

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

pub fn delay_as_bug(&self, diagnostic: Diagnostic)