Support parsing Field in parse_quote

src/parse_quote.rs

@@ -136,7 +136,7 @@ impl<T: Parse> ParseQuote for T {
 
 use crate::punctuated::Punctuated;
 #[cfg(any(feature = "full", feature = "derive"))]
-use crate::{attr, Attribute};
+use crate::{attr, Attribute, Field, FieldMutability, Ident, Type, Visibility};
 #[cfg(feature = "full")]
 use crate::{Block, Pat, Stmt};
 
@@ -151,6 +151,36 @@ impl ParseQuote for Attribute {
     }
 }
 
+#[cfg(any(feature = "full", feature = "derive"))]
+impl ParseQuote for Field {
+    fn parse(input: ParseStream) -> Result<Self> {
+        let attrs = input.call(Attribute::parse_outer)?;
+        let vis: Visibility = input.parse()?;
+
+        let ident: Option<Ident>;
+        let colon_token: Option<Token![:]>;
+        let is_named = input.peek(Ident) && input.peek2(Token![:]) && !input.peek2(Token![::]);
+        if is_named {
+            ident = Some(input.parse()?);
+            colon_token = Some(input.parse()?);
+        } else {
+            ident = None;
+            colon_token = None;
+        }
+
+        let ty: Type = input.parse()?;
+
+        Ok(Field {
+            attrs,
+            vis,
+            mutability: FieldMutability::None,
+            ident,
+            colon_token,
+            ty,
+        })
+    }
+}
+
 #[cfg(feature = "full")]
 impl ParseQuote for Pat {
     fn parse(input: ParseStream) -> Result<Self> {