dartanalyser产生在我的枚举

Question

这里一个基本的代码枚举误差修改：

enum Lock {ON, OFF} 

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

} 

我可以运行它，它打印：

Lock.ON 

但是，当我在我的代码运行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. 

这是一个错误的代码与我的枚举的错误？

编辑： 我的镖的版本是： Dart VM version: 1.8.0 (Thu Nov 27 01:01:55 2014) on "macos_x64"

Answer 1

你必须使用一个未公开的标志：

dartanalyzer --enable-enum enum_demo.dart