diff --git a/yaserde_derive/src/de/expand_struct.rs b/yaserde_derive/src/de/expand_struct.rs
index 4734b1f..0864af9 100644
--- a/yaserde_derive/src/de/expand_struct.rs
+++ b/yaserde_derive/src/de/expand_struct.rs
@@ -2,7 +2,7 @@ use attribute::*;
 use de::build_default_value::build_default_value;
 use field_type::*;
 use proc_macro2::{Span, TokenStream};
-use quote::{TokenStreamExt, ToTokens};
+use quote::{ToTokens, TokenStreamExt};
 use std::collections::BTreeMap;
 use syn::DataStruct;
 use syn::Ident;
@@ -249,7 +249,11 @@ pub fn parse(
           build_declare_visitor(&quote! {f64}, &quote! {visit_f64}, &visitor_label)
         }
         Some(FieldType::FieldTypeStruct { struct_name }) => {
-          let struct_id : String = struct_name.segments.iter().map(|s| s.ident.to_string()).collect();
+          let struct_id: String = struct_name
+            .segments
+            .iter()
+            .map(|s| s.ident.to_string())
+            .collect();
           let struct_ident = Ident::new(
             &format!("__Visitor_{}_{}", label_name, struct_id),
             Span::call_site(),
@@ -309,7 +313,10 @@ pub fn parse(
               build_declare_visitor(&quote! {f64}, &quote! {visit_f64}, &visitor_label)
             }
             Some(&FieldType::FieldTypeStruct { ref struct_name }) => {
-              let struct_ident = Ident::new(&format!("{}", struct_name.into_token_stream()), Span::call_site());
+              let struct_ident = Ident::new(
+                &format!("{}", struct_name.into_token_stream()),
+                Span::call_site(),
+              );
               Some(quote! {
                 #[allow(non_snake_case, non_camel_case_types)]
                 struct #visitor_label;
@@ -363,7 +370,10 @@ pub fn parse(
               build_declare_visitor(&quote! {f64}, &quote! {visit_f64}, &visitor_label)
             }
             Some(&FieldType::FieldTypeStruct { ref struct_name }) => {
-              let struct_ident = Ident::new(&format!("{}", struct_name.into_token_stream()), Span::call_site());
+              let struct_ident = Ident::new(
+                &format!("{}", struct_name.into_token_stream()),
+                Span::call_site(),
+              );
               Some(quote! {
                 #[allow(non_snake_case, non_camel_case_types)]
                 struct #visitor_label;
@@ -685,7 +695,10 @@ pub fn parse(
               )
             }
             Some(&FieldType::FieldTypeStruct { ref struct_name }) => {
-              let struct_ident = Ident::new(&format!("{}", struct_name.into_token_stream()), Span::call_site());
+              let struct_ident = Ident::new(
+                &format!("{}", struct_name.into_token_stream()),
+                Span::call_site(),
+              );
               Some(quote! {
                 #label_name => {
                   reader.set_map_value();
@@ -840,7 +853,10 @@ pub fn parse(
               )
             }
             Some(&FieldType::FieldTypeStruct { ref struct_name }) => {
-              let struct_ident = Ident::new(&format!("{}", struct_name.into_token_stream()), Span::call_site());
+              let struct_ident = Ident::new(
+                &format!("{}", struct_name.into_token_stream()),
+                Span::call_site(),
+              );
               Some(quote! {
                 #label_name => {
                   reader.set_map_value();
@@ -1064,7 +1080,11 @@ pub fn parse(
         }
         Some(FieldType::FieldTypeStruct { struct_name }) => {
           let struct_ident = Ident::new(
-            &format!("__Visitor_{}_{}", label_name, struct_name.into_token_stream()),
+            &format!(
+              "__Visitor_{}_{}",
+              label_name,
+              struct_name.into_token_stream()
+            ),
             Span::call_site(),
           );
 
diff --git a/yaserde_derive/src/field_type.rs b/yaserde_derive/src/field_type.rs
index 9eaa8fa..8975f98 100644
--- a/yaserde_derive/src/field_type.rs
+++ b/yaserde_derive/src/field_type.rs
@@ -23,30 +23,28 @@ pub enum FieldType {
 impl FieldType {
   fn from_ident(path: &syn::Path) -> Option<FieldType> {
     match path.segments.last() {
-      Some(t) => {
-        match t.ident.to_string().as_str() {
-          "String" => Some(FieldType::FieldTypeString),
-          "bool" => Some(FieldType::FieldTypeBool),
-          "i8" => Some(FieldType::FieldTypeI8),
-          "u8" => Some(FieldType::FieldTypeU8),
-          "i16" => Some(FieldType::FieldTypeI16),
-          "u16" => Some(FieldType::FieldTypeU16),
-          "i32" => Some(FieldType::FieldTypeI32),
-          "u32" => Some(FieldType::FieldTypeU32),
-          "i64" => Some(FieldType::FieldTypeI64),
-          "u64" => Some(FieldType::FieldTypeU64),
-          "f32" => Some(FieldType::FieldTypeF32),
-          "f64" => Some(FieldType::FieldTypeF64),
-          "Option" => get_sub_type(t).map(|data_type| FieldType::FieldTypeOption {
-            data_type: Box::new(FieldType::from_ident(&syn::Path::from(data_type)).unwrap()),
-          }),
-          "Vec" => get_sub_type(t).map(|data_type| FieldType::FieldTypeVec {
-            data_type: Box::new(FieldType::from_ident(&syn::Path::from(data_type)).unwrap()),
-          }),
-          _ => Some(FieldType::FieldTypeStruct {
-            struct_name: path.clone(),
-          }),
-        }
+      Some(t) => match t.ident.to_string().as_str() {
+        "String" => Some(FieldType::FieldTypeString),
+        "bool" => Some(FieldType::FieldTypeBool),
+        "i8" => Some(FieldType::FieldTypeI8),
+        "u8" => Some(FieldType::FieldTypeU8),
+        "i16" => Some(FieldType::FieldTypeI16),
+        "u16" => Some(FieldType::FieldTypeU16),
+        "i32" => Some(FieldType::FieldTypeI32),
+        "u32" => Some(FieldType::FieldTypeU32),
+        "i64" => Some(FieldType::FieldTypeI64),
+        "u64" => Some(FieldType::FieldTypeU64),
+        "f32" => Some(FieldType::FieldTypeF32),
+        "f64" => Some(FieldType::FieldTypeF64),
+        "Option" => get_sub_type(t).map(|data_type| FieldType::FieldTypeOption {
+          data_type: Box::new(FieldType::from_ident(&syn::Path::from(data_type)).unwrap()),
+        }),
+        "Vec" => get_sub_type(t).map(|data_type| FieldType::FieldTypeVec {
+          data_type: Box::new(FieldType::from_ident(&syn::Path::from(data_type)).unwrap()),
+        }),
+        _ => Some(FieldType::FieldTypeStruct {
+          struct_name: path.clone(),
+        }),
       },
       _ => None,
     }