Trait rustc_errors::emitter::Emitter

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pub trait Emitter: Translate {

Show 13 methods    // Required methods
    fn emit_diagnostic(&mut self, diag: &Diagnostic);
    fn source_map(&self) -> Option<&Lrc<SourceMap>>;

    // Provided methods
    fn emit_artifact_notification(&mut self, _path: &Path, _artifact_type: &str) { ... }
    fn emit_future_breakage_report(&mut self, _diags: Vec<Diagnostic>) { ... }
    fn emit_unused_externs(
        &mut self,
        _lint_level: Level,
        _unused_externs: &[&str]
    ) { ... }
    fn should_show_explain(&self) -> bool { ... }
    fn supports_color(&self) -> bool { ... }
    fn primary_span_formatted<'a>(
        &mut self,
        diag: &'a Diagnostic,
        fluent_args: &FluentArgs<'_>
    ) -> (MultiSpan, &'a [CodeSuggestion]) { ... }
    fn fix_multispans_in_extern_macros_and_render_macro_backtrace(
        &self,
        span: &mut MultiSpan,
        children: &mut Vec<SubDiagnostic>,
        level: &Level,
        backtrace: bool
    ) { ... }
    fn render_multispans_macro_backtrace(
        &self,
        span: &mut MultiSpan,
        children: &mut Vec<SubDiagnostic>,
        backtrace: bool
    ) { ... }
    fn render_multispan_macro_backtrace(
        &self,
        span: &mut MultiSpan,
        always_backtrace: bool
    ) { ... }
    fn fix_multispans_in_extern_macros(
        &self,
        span: &mut MultiSpan,
        children: &mut Vec<SubDiagnostic>
    ) { ... }
    fn fix_multispan_in_extern_macros(&self, span: &mut MultiSpan) { ... }

}
Expand description

Emitter trait for emitting errors.

Required Methods§

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fn emit_diagnostic(&mut self, diag: &Diagnostic)

Emit a structured diagnostic.

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fn source_map(&self) -> Option<&Lrc<SourceMap>>

Provided Methods§

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fn emit_artifact_notification(&mut self, _path: &Path, _artifact_type: &str)

Emit a notification that an artifact has been output. This is currently only supported for the JSON format, other formats can, and will, simply ignore it.

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fn emit_future_breakage_report(&mut self, _diags: Vec<Diagnostic>)

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fn emit_unused_externs(&mut self, _lint_level: Level, _unused_externs: &[&str])

Emit list of unused externs

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fn should_show_explain(&self) -> bool

Checks if should show explanations about “rustc –explain”

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fn supports_color(&self) -> bool

Checks if we can use colors in the current output stream.

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fn primary_span_formatted<'a>( &mut self, diag: &'a Diagnostic, fluent_args: &FluentArgs<'_> ) -> (MultiSpan, &'a [CodeSuggestion])

Formats the substitutions of the primary_span

There are a lot of conditions to this method, but in short:

  • If the current Diagnostic has only one visible CodeSuggestion, we format the help suggestion depending on the content of the substitutions. In that case, we return the modified span only.

  • If the current Diagnostic has multiple suggestions, we return the original primary_span and the original suggestions.

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fn fix_multispans_in_extern_macros_and_render_macro_backtrace( &self, span: &mut MultiSpan, children: &mut Vec<SubDiagnostic>, level: &Level, backtrace: bool )

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fn render_multispans_macro_backtrace( &self, span: &mut MultiSpan, children: &mut Vec<SubDiagnostic>, backtrace: bool )

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fn render_multispan_macro_backtrace( &self, span: &mut MultiSpan, always_backtrace: bool )

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fn fix_multispans_in_extern_macros( &self, span: &mut MultiSpan, children: &mut Vec<SubDiagnostic> )

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fn fix_multispan_in_extern_macros(&self, span: &mut MultiSpan)

Implementors§