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use super::prelude::*;
use super::util::parse_single_integer;
pub(crate) struct RustcLayoutScalarValidRangeStart;
impl<S: Stage> SingleAttributeParser<S> for RustcLayoutScalarValidRangeStart {
const PATH: &'static [Symbol] = &[sym::rustc_layout_scalar_valid_range_start];
const ATTRIBUTE_ORDER: AttributeOrder = AttributeOrder::KeepInnermost;
const ON_DUPLICATE: OnDuplicate<S> = OnDuplicate::Error;
const ALLOWED_TARGETS: AllowedTargets = AllowedTargets::AllowList(&[Allow(Target::Struct)]);
const TEMPLATE: AttributeTemplate = template!(List: &["start"]);
fn convert(cx: &mut AcceptContext<'_, '_, S>, args: &ArgParser<'_>) -> Option<AttributeKind> {
parse_single_integer(cx, args)
.map(|n| AttributeKind::RustcLayoutScalarValidRangeStart(Box::new(n), cx.attr_span))
}
}
pub(crate) struct RustcLayoutScalarValidRangeEnd;
impl<S: Stage> SingleAttributeParser<S> for RustcLayoutScalarValidRangeEnd {
const PATH: &'static [Symbol] = &[sym::rustc_layout_scalar_valid_range_end];
const ATTRIBUTE_ORDER: AttributeOrder = AttributeOrder::KeepInnermost;
const ON_DUPLICATE: OnDuplicate<S> = OnDuplicate::Error;
const ALLOWED_TARGETS: AllowedTargets = AllowedTargets::AllowList(&[Allow(Target::Struct)]);
const TEMPLATE: AttributeTemplate = template!(List: &["end"]);
fn convert(cx: &mut AcceptContext<'_, '_, S>, args: &ArgParser<'_>) -> Option<AttributeKind> {
parse_single_integer(cx, args)
.map(|n| AttributeKind::RustcLayoutScalarValidRangeEnd(Box::new(n), cx.attr_span))
}
}
pub(crate) struct RustcObjectLifetimeDefaultParser;
impl<S: Stage> SingleAttributeParser<S> for RustcObjectLifetimeDefaultParser {
const PATH: &[rustc_span::Symbol] = &[sym::rustc_object_lifetime_default];
const ATTRIBUTE_ORDER: AttributeOrder = AttributeOrder::KeepInnermost;
const ON_DUPLICATE: OnDuplicate<S> = OnDuplicate::Error;
const ALLOWED_TARGETS: AllowedTargets = AllowedTargets::AllowList(&[Allow(Target::Struct)]);
const TEMPLATE: AttributeTemplate = template!(Word);
fn convert(cx: &mut AcceptContext<'_, '_, S>, args: &ArgParser<'_>) -> Option<AttributeKind> {
if let Err(span) = args.no_args() {
cx.expected_no_args(span);
return None;
}
Some(AttributeKind::RustcObjectLifetimeDefault)
}
}
pub(crate) struct RustcSimdMonomorphizeLaneLimitParser;
impl<S: Stage> SingleAttributeParser<S> for RustcSimdMonomorphizeLaneLimitParser {
const PATH: &[Symbol] = &[sym::rustc_simd_monomorphize_lane_limit];
const ATTRIBUTE_ORDER: AttributeOrder = AttributeOrder::KeepInnermost;
const ON_DUPLICATE: OnDuplicate<S> = OnDuplicate::Error;
const ALLOWED_TARGETS: AllowedTargets = AllowedTargets::AllowList(&[Allow(Target::Struct)]);
const TEMPLATE: AttributeTemplate = template!(NameValueStr: "N");
fn convert(cx: &mut AcceptContext<'_, '_, S>, args: &ArgParser<'_>) -> Option<AttributeKind> {
let ArgParser::NameValue(nv) = args else {
cx.expected_name_value(cx.attr_span, None);
return None;
};
Some(AttributeKind::RustcSimdMonomorphizeLaneLimit(cx.parse_limit_int(nv)?))
}
}
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