rustc_errors::emitter

Trait Emitter

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pub trait Emitter: Translate {

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

    // Provided methods
    fn emit_artifact_notification(&mut self, _path: &Path, _artifact_type: &str) { ... }
    fn emit_future_breakage_report(
        &mut self,
        _diags: Vec<DiagInner>,
        _registry: &Registry,
    ) { ... }
    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(
        &mut self,
        primary_span: &mut MultiSpan,
        suggestions: &mut Vec<CodeSuggestion>,
        fluent_args: &FluentArgs<'_>,
    ) { ... }
    fn fix_multispans_in_extern_macros_and_render_macro_backtrace(
        &self,
        span: &mut MultiSpan,
        children: &mut Vec<Subdiag>,
        level: &Level,
        backtrace: bool,
    ) { ... }
    fn render_multispans_macro_backtrace(
        &self,
        span: &mut MultiSpan,
        children: &mut Vec<Subdiag>,
        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<Subdiag>,
    ) { ... }
    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: DiagInner, registry: &Registry)

Emit a structured diagnostic.

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fn source_map(&self) -> Option<&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. Currently only supported for the JSON format.

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fn emit_future_breakage_report( &mut self, _diags: Vec<DiagInner>, _registry: &Registry, )

Emit a report about future breakage. Currently only supported for the JSON format.

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

Emit list of unused externs. Currently only supported for the JSON format.

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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( &mut self, primary_span: &mut MultiSpan, suggestions: &mut Vec<CodeSuggestion>, fluent_args: &FluentArgs<'_>, )

Formats the substitutions of the primary_span

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

  • If the current DiagInner has only one visible CodeSuggestion, we format the help suggestion depending on the content of the substitutions. In that case, we modify the span and clear the suggestions.

  • If the current DiagInner has multiple suggestions, we leave primary_span and the suggestions untouched.

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

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fn render_multispans_macro_backtrace( &self, span: &mut MultiSpan, children: &mut Vec<Subdiag>, 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<Subdiag>, )

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

Implementors§