Add some comment about SelectExpr
@@ -153,6 +153,10 @@ impl quote::ToTokens for FieldName {
}
}
+/// We use this instead of directly `syn::Expr` to reduce compilation time
+///
+/// `syn::Expr` does not properly support tuples when `syn/full` feature is
+/// not enabled, and that feature slightly increases compilation time
pub enum SelectExpr {
Expr(syn::Expr),
Tuple {
