rustc_attr_parsing/attributes/lint_helpers.rs
1use rustc_attr_data_structures::AttributeKind;
2use rustc_feature::{AttributeTemplate, template};
3use rustc_span::{Symbol, sym};
4
5use crate::attributes::{AttributeOrder, OnDuplicate, SingleAttributeParser};
6use crate::context::{AcceptContext, Stage};
7use crate::parser::ArgParser;
8
9pub(crate) struct AsPtrParser;
10
11impl<S: Stage> SingleAttributeParser<S> for AsPtrParser {
12 const PATH: &[Symbol] = &[sym::rustc_as_ptr];
13 const ATTRIBUTE_ORDER: AttributeOrder = AttributeOrder::KeepFirst;
14 const ON_DUPLICATE: OnDuplicate<S> = OnDuplicate::Error;
15 const TEMPLATE: AttributeTemplate = template!(Word);
16
17 fn convert(cx: &mut AcceptContext<'_, '_, S>, args: &ArgParser<'_>) -> Option<AttributeKind> {
18 if let Err(span) = args.no_args() {
19 cx.expected_no_args(span);
20 }
21 Some(AttributeKind::AsPtr(cx.attr_span))
22 }
23}
24
25pub(crate) struct PubTransparentParser;
26impl<S: Stage> SingleAttributeParser<S> for PubTransparentParser {
27 const PATH: &[Symbol] = &[sym::rustc_pub_transparent];
28 const ATTRIBUTE_ORDER: AttributeOrder = AttributeOrder::KeepFirst;
29 const ON_DUPLICATE: OnDuplicate<S> = OnDuplicate::Error;
30 const TEMPLATE: AttributeTemplate = template!(Word);
31
32 fn convert(cx: &mut AcceptContext<'_, '_, S>, args: &ArgParser<'_>) -> Option<AttributeKind> {
33 if let Err(span) = args.no_args() {
34 cx.expected_no_args(span);
35 }
36 Some(AttributeKind::PubTransparent(cx.attr_span))
37 }
38}