src/librustc_ast/expand/mod.rs

   1 //! Definitions shared by macros / syntax extensions and e.g. librustc.
   2
   3 use crate::ast::Attribute;
   4 use rustc_span::symbol::sym;
   5
   6 pub mod allocator;
   7
   8 pub fn is_proc_macro_attr(attr: &Attribute) -> bool {
   9     [sym::proc_macro, sym::proc_macro_attribute, sym::proc_macro_derive]
  10         .iter()
  11         .any(|kind| attr.check_name(*kind))
  12 }