xml: Refactoring

crates/xml/derive/src/attrs.rs

@@ -0,0 +1,64 @@
+use darling::{util::Flag, FromDeriveInput, FromField, FromMeta, FromVariant};
+use syn::LitByteStr;
+
+#[derive(Default, FromMeta, Clone)]
+pub struct ContainerAttrs {
+    pub ns_strict: Flag,
+}
+
+#[derive(Default, FromMeta, Clone)]
+pub struct TagAttrs {
+    pub rename: Option<LitByteStr>,
+    pub ns_strict: Flag,
+    pub ns: Option<LitByteStr>,
+}
+
+#[derive(Default, FromVariant)]
+#[darling(attributes(xml))]
+pub struct VariantAttrs {
+    #[darling(flatten)]
+    pub common: TagAttrs,
+    pub other: Flag,
+    pub skip_deserializing: Flag,
+}
+
+#[derive(Default, FromDeriveInput, Clone)]
+#[darling(attributes(xml))]
+pub struct EnumAttrs {
+    #[darling(flatten)]
+    pub container: ContainerAttrs,
+    pub untagged: Flag,
+}
+
+#[derive(Default, FromDeriveInput, Clone)]
+#[darling(attributes(xml))]
+pub struct StructAttrs {
+    #[darling(flatten)]
+    pub container: ContainerAttrs,
+
+    pub root: Option<LitByteStr>,
+    pub ns: Option<LitByteStr>,
+    pub allow_invalid: Flag,
+}
+
+#[derive(Default, FromMeta, PartialEq)]
+pub enum FieldType {
+    #[default]
+    Tag,
+    Attr,
+    Text,
+    Untagged,
+    TagName,
+    Namespace,
+}
+
+#[derive(Default, FromField)]
+#[darling(attributes(xml))]
+pub struct FieldAttrs {
+    #[darling(flatten)]
+    pub common: TagAttrs,
+    pub flatten: Flag,
+    pub default: Option<syn::ExprPath>,
+    #[darling(default, rename = "ty")]
+    pub xml_ty: FieldType,
+}