合同类应该是一个抽象类 [英] Contract class should be an abstract class
问题描述
以下代码为我提供警告 Contract类'FooContracts'应该是一个抽象类
。从我在线阅读的所有示例(例如 http://www.infoq.com/articles/code-contracts -csharp ),这应该工作(可能没有编译器警告)。
The following code gives me the warning Contract class 'FooContracts' should be an abstract class
. From all the examples I've read online (e.g. http://www.infoq.com/articles/code-contracts-csharp), this should work (presumably without compiler warnings).
[ContractClass(typeof(FooContracts))]
public interface IFoo {
void Bar(string foo);
}
[ContractClassFor(typeof(IFoo))]
internal sealed class FooContracts : IFoo {
void IFoo.Bar(string foo) {
Contract.Requires(foo != null);
}
}
我在Visual Studio 2010中,项目属性的代码合同
部分中的设置:
I'm in Visual Studio 2010, with the following settings in the Code Contracts
section of the project's properties:
- 执行运行时合同检查(设置为
完全
) - 执行静态合同检查)
- 签入背景
我也定义了 CONTRACTS_FULL
编译符号使ReSharper关闭。
I also defined the CONTRACTS_FULL
compilation symbol to make ReSharper shut up.
我缺少一些东西使这个编译没有警告吗?
Am I missing something to make this compile without warnings?
推荐答案
代码合同手册的第2.8节明确声明它应该是一个抽象类:
Section 2.8 of the code contracts manual specifically states that it should be an abstract class:
工具期望合同类是抽象的并实现接口正在为。
The tools expect that the contract class is abstract and implements the interface it is providing contracts for.
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