Trait rustc_lint::LintContext

source · [−]
pub trait LintContext: Sized {
    type PassObject: LintPassObject;

    fn sess(&self) -> &Session;
    fn lints(&self) -> &LintStore;
    fn lookup<S: Into<MultiSpan>>(
        &self,
        lint: &'static Lint,
        span: Option<S>,
        msg: impl Into<DiagnosticMessage>,
        decorate: impl for<'a, 'b> FnOnce(&'b mut DiagnosticBuilder<'a, ()>) -> &'b mut DiagnosticBuilder<'a, ()>
    );
    fn get_lint_level(&self, lint: &'static Lint) -> Level;

    fn lookup_with_diagnostics(
        &self,
        lint: &'static Lint,
        span: Option<impl Into<MultiSpan>>,
        msg: impl Into<DiagnosticMessage>,
        decorate: impl for<'a, 'b> FnOnce(&'b mut DiagnosticBuilder<'a, ()>) -> &'b mut DiagnosticBuilder<'a, ()>,
        diagnostic: BuiltinLintDiagnostics
    ) { ... }
    fn emit_spanned_lint<S: Into<MultiSpan>>(
        &self,
        lint: &'static Lint,
        span: S,
        decorator: impl for<'a> DecorateLint<'a, ()>
    ) { ... }
    fn struct_span_lint<S: Into<MultiSpan>>(
        &self,
        lint: &'static Lint,
        span: S,
        msg: impl Into<DiagnosticMessage>,
        decorate: impl for<'a, 'b> FnOnce(&'b mut DiagnosticBuilder<'a, ()>) -> &'b mut DiagnosticBuilder<'a, ()>
    ) { ... }
    fn emit_lint(
        &self,
        lint: &'static Lint,
        decorator: impl for<'a> DecorateLint<'a, ()>
    ) { ... }
    fn lint(
        &self,
        lint: &'static Lint,
        msg: impl Into<DiagnosticMessage>,
        decorate: impl for<'a, 'b> FnOnce(&'b mut DiagnosticBuilder<'a, ()>) -> &'b mut DiagnosticBuilder<'a, ()>
    ) { ... }
    fn fulfill_expectation(&self, expectation: LintExpectationId) { ... }
}

Required Associated Types

Required Methods

This returns the lint level for the given lint at the current location.

Provided Methods

Emit a lint at span from a lint struct (some type that implements DecorateLint, typically generated by #[derive(LintDiagnostic)]).

Emit a lint from a lint struct (some type that implements DecorateLint, typically generated by #[derive(LintDiagnostic)]).

Emit a lint at the appropriate level, with no associated span.

This function can be used to manually fulfill an expectation. This can be used for lints which contain several spans, and should be suppressed, if either location was marked with an expectation.

Note that this function should only be called for LintExpectationIds retrieved from the current lint pass. Buffered or manually created ids can cause ICEs.

Implementors