Struct OnUnknownParser 

pub(crate) struct OnUnknownParser {
    span: Option<Span>,
    directive: Option<(Span, Directive)>,
}

Fields

span: Option<Span>

directive: Option<(Span, Directive)>

Implementations

impl OnUnknownParser

fn parse<'sess>( &mut self, cx: &mut AcceptContext<'_, 'sess>, args: &ArgParser, mode: Mode, )

Trait Implementations

impl AttributeParser for OnUnknownParser

const ATTRIBUTES: &'static [(&'static [Symbol], AttributeTemplate, AttributeStability, for<'sess> fn(&mut Self, &mut AcceptContext<'_, 'sess>, &ArgParser))]

The symbols for the attributes that this parser is interested in.

const ALLOWED_TARGETS: AllowedTargets<'_>

fn finalize(self, _cx: &FinalizeContext<'_, '_>) -> Option<AttributeKind>

The parser has gotten a chance to accept the attributes on an item, here it can produce an attribute.

const SAFETY: AttributeSafety = AttributeSafety::Normal

fn deferred_finalize_check( &self, ) -> Option<(fn(&FinalizeCheckContext<'_, '_>, Span), Span)>

If this parser produced an attribute, optionally returns a cross-attribute check to run once all attributes on the item have been finalized, together with the span it should be reported at.

impl Default for OnUnknownParser

fn default() -> OnUnknownParser

Returns the “default value” for a type.

Layout

Note: Most layout information is completely unstable and may even differ between compilations. The only exception is types with certain repr(...) attributes. Please see the Rust Reference's “Type Layout” chapter for details on type layout guarantees.

Size: 144 bytes