dartanalyser產生在我的枚舉

Question

這裏一個基本的代碼枚舉誤差修改：

enum Lock {ON, OFF} 

void main(){ 
    var lock = Lock.ON; 
    print(lock); 

} 

我可以運行它，它打印：

Lock.ON 

但是，當我在我的代碼運行dartanalyser：

$dartanalyzer enum_demo.dart 
Analyzing [enum_demo.dart]... 
[error] Expected a method, getter, setter or operator declaration (/Users/nicolasfrancois/Documents/dart/enum_demo.dart, line 1, col 1) 
[error] Unexpected token 'enum' (/Users/nicolasfrancois/Documents/dart/enum_demo.dart, line 1, col 1) 
[error] Expected a method, getter, setter or operator declaration (/Users/nicolasfrancois/Documents/dart/enum_demo.dart, line 1, col 11) 
[error] Unexpected token '{' (/Users/nicolasfrancois/Documents/dart/enum_demo.dart, line 1, col 11) 
[error] Variables must be declared using the keywords 'const', 'final', 'var' or a type name (/Users/nicolasfrancois/Documents/dart/enum_demo.dart, line 1, col 12) 
[error] Expected to find ';' (/Users/nicolasfrancois/Documents/dart/enum_demo.dart, line 1, col 16) 
[error] Unexpected token '}' (/Users/nicolasfrancois/Documents/dart/enum_demo.dart, line 1, col 19) 
[error] Expected a method, getter, setter or operator declaration (/Users/nicolasfrancois/Documents/dart/enum_demo.dart, line 1, col 19) 
[warning] Undefined class 'Lock' (/Users/nicolasfrancois/Documents/dart/enum_demo.dart, line 1, col 6) 
[warning] Undefined name 'Lock' (/Users/nicolasfrancois/Documents/dart/enum_demo.dart, line 5, col 13) 
8 errors and 2 warnings found. 

這是一個錯誤的代碼與我的枚舉的錯誤？

編輯： 我的鏢的版本是： Dart VM version: 1.8.0 (Thu Nov 27 01:01:55 2014) on "macos_x64"

Answer 1

你必須使用一個未公開的標誌：

dartanalyzer --enable-enum enum_demo.dart