案例优化

lib/components/permanent/code/code_widget.dart

@@ -2,12 +2,11 @@
 /// create by 张风捷特烈 on 2020-04-15
 /// contact me by email 1981462002@qq.com
 /// 说明: 
-
 import 'package:flutter/material.dart';
-import 'language/dart_languge.dart';
 
 import 'high_light_code.dart';
 import 'highlighter_style.dart';
+import 'language/dart_languge.dart';
 
 class CodeWidget extends StatelessWidget {
   CodeWidget({Key? key, required this.code,required this.style, this.fontSize = 13,this.fontFamily})
@@ -21,10 +20,7 @@ class CodeWidget extends StatelessWidget {
   @override
   Widget build(BuildContext context) {
     Widget body;
-    if (code == null) {
-      return Container();
-    } else {
-      Widget _codeWidget;
+    Widget _codeWidget;
       try {
         _codeWidget = RichText(
           text: TextSpan(
@@ -49,7 +45,6 @@ class CodeWidget extends StatelessWidget {
               borderRadius: BorderRadius.all(Radius.circular(5.0))),
         ),
       );
-    }
     return body;
   }
 }