create empty inline attr parser and associated AttributeKind variants

Author: jdonszelmann

compiler/rustc_attr_data_structures/src/attributes.rs

@@ -8,7 +8,7 @@ use thin_vec::ThinVec;
 
 use crate::{DefaultBodyStability, PartialConstStability, PrintAttribute, RustcVersion, Stability};
 
-#[derive(Copy, Clone, PartialEq, Encodable, Decodable, Debug, HashStable_Generic)]
+#[derive(Copy, Clone, PartialEq, Encodable, Decodable, Debug, HashStable_Generic, PrintAttribute)]
 pub enum InlineAttr {
     None,
     Hint,
@@ -189,6 +189,7 @@ pub enum AttributeKind {
         span: Span,
         comment: Symbol,
     },
+    Inline(InlineAttr),
     MacroTransparency(Transparency),
     Repr(ThinVec<(ReprAttr, Span)>),
     Stability {

compiler/rustc_attr_parsing/src/attributes/inline.rs

@@ -0,0 +1,17 @@
+use rustc_span::sym;
+
+use crate::attributes::SingleAttributeParser;
+
+pub(crate) struct InlineParser;
+
+impl SingleAttributeParser for InlineParser {
+    const PATH: &'static [rustc_span::Symbol] = &[sym::inline];
+
+    fn on_duplicate(cx: &super::AcceptContext<'_>, first_span: rustc_span::Span) {
+        todo!()
+    }
+
+    fn convert(cx: &super::AcceptContext<'_>, args: &crate::parser::ArgParser<'_>) -> Option<rustc_attr_data_structures::AttributeKind> {
+        todo!()
+    }
+}

compiler/rustc_attr_parsing/src/attributes/mod.rs

@@ -29,6 +29,7 @@ pub(crate) mod allow_unstable;
 pub(crate) mod cfg;
 pub(crate) mod confusables;
 pub(crate) mod deprecation;
+pub(crate) mod inline;
 pub(crate) mod repr;
 pub(crate) mod stability;
 pub(crate) mod transparency;

compiler/rustc_attr_parsing/src/context.rs

@@ -19,6 +19,7 @@ use rustc_span::{DUMMY_SP, ErrorGuaranteed, Span, Symbol, sym};
 use crate::attributes::allow_unstable::{AllowConstFnUnstableParser, AllowInternalUnstableParser};
 use crate::attributes::confusables::ConfusablesParser;
 use crate::attributes::deprecation::DeprecationParser;
+use crate::attributes::inline::InlineParser;
 use crate::attributes::repr::ReprParser;
 use crate::attributes::stability::{
     BodyStabilityParser, ConstStabilityIndirectParser, ConstStabilityParser, StabilityParser,
@@ -104,6 +105,7 @@ attribute_groups!(
         // tidy-alphabetical-start
         Single<ConstStabilityIndirectParser>,
         Single<DeprecationParser>,
+        Single<InlineParser>,
         Single<TransparencyParser>,
         // tidy-alphabetical-end
     ];