Group some functions that used together

serde_derive/src/de/identifier.rs

@@ -8,66 +8,6 @@ use crate::private;
 use proc_macro2::{Literal, TokenStream};
 use quote::{quote, ToTokens};
 
-pub fn generate_identifier(
-    deserialized_fields: &[FieldWithAliases],
-    has_flatten: bool,
-    is_variant: bool,
-    ignore_variant: Option<TokenStream>,
-    fallthrough: Option<TokenStream>,
-) -> Fragment {
-    let this_value = quote!(__Field);
-    let field_idents: &Vec<_> = &deserialized_fields
-        .iter()
-        .map(|field| &field.ident)
-        .collect();
-
-    let visitor_impl = Stmts(deserialize_identifier(
-        &this_value,
-        deserialized_fields,
-        is_variant,
-        fallthrough,
-        None,
-        !is_variant && has_flatten,
-        None,
-    ));
-
-    let lifetime = if !is_variant && has_flatten {
-        Some(quote!(<'de>))
-    } else {
-        None
-    };
-
-    quote_block! {
-        #[allow(non_camel_case_types)]
-        #[doc(hidden)]
-        enum __Field #lifetime {
-            #(#field_idents,)*
-            #ignore_variant
-        }
-
-        #[doc(hidden)]
-        struct __FieldVisitor;
-
-        #[automatically_derived]
-        impl<'de> _serde::de::Visitor<'de> for __FieldVisitor {
-            type Value = __Field #lifetime;
-
-            #visitor_impl
-        }
-
-        #[automatically_derived]
-        impl<'de> _serde::Deserialize<'de> for __Field #lifetime {
-            #[inline]
-            fn deserialize<__D>(__deserializer: __D) -> _serde::#private::Result<Self, __D::Error>
-            where
-                __D: _serde::Deserializer<'de>,
-            {
-                _serde::Deserializer::deserialize_identifier(__deserializer, __FieldVisitor)
-            }
-        }
-    }
-}
-
 // Generates `Deserialize::deserialize` body for an enum with
 // `serde(field_identifier)` or `serde(variant_identifier)` attribute.
 pub fn generate_body(
@@ -180,6 +120,66 @@ pub fn generate_body(
     }
 }
 
+pub fn generate_identifier(
+    deserialized_fields: &[FieldWithAliases],
+    has_flatten: bool,
+    is_variant: bool,
+    ignore_variant: Option<TokenStream>,
+    fallthrough: Option<TokenStream>,
+) -> Fragment {
+    let this_value = quote!(__Field);
+    let field_idents: &Vec<_> = &deserialized_fields
+        .iter()
+        .map(|field| &field.ident)
+        .collect();
+
+    let visitor_impl = Stmts(deserialize_identifier(
+        &this_value,
+        deserialized_fields,
+        is_variant,
+        fallthrough,
+        None,
+        !is_variant && has_flatten,
+        None,
+    ));
+
+    let lifetime = if !is_variant && has_flatten {
+        Some(quote!(<'de>))
+    } else {
+        None
+    };
+
+    quote_block! {
+        #[allow(non_camel_case_types)]
+        #[doc(hidden)]
+        enum __Field #lifetime {
+            #(#field_idents,)*
+            #ignore_variant
+        }
+
+        #[doc(hidden)]
+        struct __FieldVisitor;
+
+        #[automatically_derived]
+        impl<'de> _serde::de::Visitor<'de> for __FieldVisitor {
+            type Value = __Field #lifetime;
+
+            #visitor_impl
+        }
+
+        #[automatically_derived]
+        impl<'de> _serde::Deserialize<'de> for __Field #lifetime {
+            #[inline]
+            fn deserialize<__D>(__deserializer: __D) -> _serde::#private::Result<Self, __D::Error>
+            where
+                __D: _serde::Deserializer<'de>,
+            {
+                _serde::Deserializer::deserialize_identifier(__deserializer, __FieldVisitor)
+            }
+        }
+    }
+}
+
 fn deserialize_identifier(
     this_value: &TokenStream,
     deserialized_fields: &[FieldWithAliases],