1 files changed, 0 insertions, 58 deletions
diff --git a/vendor/rustversion/src/constfn.rs b/vendor/rustversion/src/constfn.rs
deleted file mode 100644
index 0e50c039..00000000
--- a/vendor/rustversion/src/constfn.rs
+++ /dev/null
@@ -1,58 +0,0 @@
-use crate::error::{Error, Result};
-use proc_macro::{Ident, Span, TokenStream, TokenTree};
-use std::iter;
-
-#[derive(PartialOrd, PartialEq)]
-enum Qualifiers {
-    None,
-    Async,
-    Unsafe,
-    Extern,
-    Abi,
-}
-
-impl Qualifiers {
-    fn from_ident(ident: &Ident) -> Self {
-        match ident.to_string().as_str() {
-            "async" => Qualifiers::Async,
-            "unsafe" => Qualifiers::Unsafe,
-            "extern" => Qualifiers::Extern,
-            _ => Qualifiers::None,
-        }
-    }
-}
-
-pub(crate) fn insert_const(input: TokenStream, const_span: Span) -> Result<TokenStream> {
-    let ref mut input = crate::iter::new(input);
-    let mut out = TokenStream::new();
-    let mut qualifiers = Qualifiers::None;
-    let mut pending = Vec::new();
-
-    while let Some(token) = input.next() {
-        match token {
-            TokenTree::Ident(ref ident) if ident.to_string() == "fn" => {
-                let const_ident = Ident::new("const", const_span);
-                out.extend(iter::once(TokenTree::Ident(const_ident)));
-                out.extend(pending);
-                out.extend(iter::once(token));
-                out.extend(input);
-                return Ok(out);
-            }
-            TokenTree::Ident(ref ident) if Qualifiers::from_ident(ident) > qualifiers => {
-                qualifiers = Qualifiers::from_ident(ident);
-                pending.push(token);
-            }
-            TokenTree::Literal(_) if qualifiers == Qualifiers::Extern => {
-                qualifiers = Qualifiers::Abi;
-                pending.push(token);
-            }
-            _ => {
-                qualifiers = Qualifiers::None;
-                out.extend(pending.drain(..));
-                out.extend(iter::once(token));
-            }
-        }
-    }
-
-    Err(Error::new(const_span, "only allowed on a fn item"))
-}