在C#和C ++之间共享源文件

时间:2013-11-11 19:35:45

标签: c# c++ enums code-sharing

我有一个主要用C#编写的项目。我需要为该项目的API的所有错误号“定义”定义一个类。我试图避免编写/修改我的许多代码生成器之一来实现这一目标。

我想做的是能够将#include内容(如错误玷污)直接导入到C / C ++项目中。我在C#中定义它们如下,我没有使用枚举来看你会在这里看到的东西:

using System;

namespace ProjectAPI {

[Serializable]
public sealed class ProjectError {

    public enum ProjectErrorClass {
        None            = -1,
        Undefined       = 0,
        Login,
        Store,
        Transaction,
        Heartbeat,
        Service,
        HTTPS,
        Uploader,
        Downloader,
        APICall,
        AutoUpdate,
        General
    }

    public enum ProjectErrorLevel {
        Unknown = -1,
        Success = 0,
        Informational,
        Warning,
        Critical,
    };

    /// <summary>
    /// PROJECT_ERROR_BASE - This is the base for all Project defined errors in the API.  Project Errors are defined as follows:
    ///   ProjectAPI error values are 32 bit values defined as follows:
    ///   3 3 2 2 2 2 2 2 2 2 2 2 1 1 1 1 1 1 1 1 1 1
    ///   1 0 9 8 7 6 5 4 3 2 1 0 9 8 7 6 5 4 3 2 1 0 9 8 7 6 5 4 3 2 1 0
    ///  +---+---------------+-----------------------+------------------+
    ///  |Sev|Error Code Base| Error Class           |Unique Error Code |
    ///  +---+---------------+-----------------------+------------------+
    ///  where
    ///
    ///      Sev - is the severity code of the error (2 bits), and is defined as follows:
    ///          00 - Success (non-fatal)   0x00
    ///          01 - Informational         0x01
    ///          10 - Warning               0x02
    ///          11 - Error                 0x03
    ///
    ///      Error Code Base - is the starting point of all Project Errors, and is set at 0xA4 (8 Bits).
    ///
    ///      Error Class - is the error class, or API "Module" that caused the error (12 bits).
    ///
    ///      Code - the unique error code (10 bits). (0 - 1,023 (0x3FF)).
    /// </summary>

    private static readonly int ERR_SHIFT                       = 0x1E;
    private static readonly int BASE_SHIFT                      = 0x16;
    private static readonly int CLASS_SHIFT                     = 0x06;

    private static readonly int PROJECT_SEV_SUCCESS           = 0x00;
    private static readonly int PROJECT_SEV_INFO              = 0x01;
    private static readonly int PROJECT_SEV_WARN              = 0x02;
    private static readonly int PROJECT_SEV_ERROR             = 0x03;

    private static readonly int PROJECT_ERROR_BASE             = 0xA5;

    /// <summary>
    /// Project Error Class Constants:
    /// </summary>
    private static readonly int PROJECT_ERROR_CLASS_UNDEF     = 0x0010;   /// Undefined.
    private static readonly int PROJECT_ERROR_CLASS_LOGIN     = 0x0020;   /// LoginClass Error.
    private static readonly int PROJECT_ERROR_CLASS_STORE     = 0x0040;   /// Store Error.
    private static readonly int PROJECT_ERROR_CLASS_TRANS     = 0x0080;   /// Transaction Error.
    private static readonly int PROJECT_ERROR_CLASS_HEART     = 0x0100;   /// HeartBeat (Project Health Monitor) Error.
    private static readonly int PROJECT_ERROR_CLASS_SERV      = 0x0200;   /// Service Error.
    private static readonly int PROJECT_ERROR_CLASS_HTTP      = 0x0400;   /// HTTP/HTTPS Error.
    private static readonly int PROJECT_ERROR_CLASS_UPLOAD    = 0x0800;   /// Upload (Transactions) Error
    private static readonly int PROJECT_ERROR_CLASS_DOWNLOAD  = 0x1000;   /// Download (Transactions) Error
    private static readonly int PROJECT_ERROR_CLASS_APICALL   = 0x2000;   /// API Command/call error.
    private static readonly int PROJECT_ERROR_CLASS_UPDATE    = 0x4000;   /// Auto-Updater Errors.
    private static readonly int PROJECT_ERROR_CLASS_GEN       = 0x8000;   /// General Error.

    public static readonly int PROJECT_ERROR_UNKNOWN_ERROR    = ProjectErrCode(PROJECT_SEV_ERROR, PROJECT_ERROR_CLASS_GEN, 0x001);
    // Was...
    //    (((PROJECT_SEV_ERROR << ERR_SHIFT) | PROJECT_ERROR_BASE << BASE_SHIFT) | ((PROJECT_ERROR_CLASS_UNDEF << CLASS_SHIFT) | 0x0001));

    public static readonly int PROJECT_ERROR_UNKNOWN_HEARTBEAT_ERROR = ProjectErrCode(PROJECT_SEV_ERROR, PROJECT_ERROR_CLASS_HEART, 0x001);
...Snip...

...

我意识到还有其他东西可以放入Enums,但我的目标是能够用C ++编译器编译这个源代码。 (上面的示例中缺少函数,即ProjectErrCode(),它在从API调用时构建错误代码OTF的最终整数值。)

我正在构建错误常量,如注释中所示,我可以回过头来看,但我更愿意编写类似的类 - 在C ++中用C#编写一个可以构造/解构错误代码的类。我的函数返回错误的严重性,错误类等。开发人员可以忽略它,记录它,将其传递给UI等等。

如果我只有5或10个错误代码,这不是问题。但我已经超过100,并且真的不希望维护带有重复信息的.cs和.h文件。我可以在.h文件中管理它们并让CS代码读取它们,但这几乎与编写(修改)代码生成器一样多。


我如何#define通往单个源文件,以便C#编译器可以编译它,就像C / ++编译器一样?我可以简单地#include "ProjectErrors.cs" - 文件名不是那里的问题。我开始认为我可以通过#defineusing System;这样的东西来做这件事,但几乎挂了。

2 个答案:

答案 0 :(得分:4)

1)使用预处理器。一些ifdef和define应该可以解决这个问题,但它会非常混乱。

2)使用C ++ / CLI。 C ++ / CLI是C ++的一种变体,它被编译成.Net程序集。虽然.Net类型和本机类型是独立的实体,但它们之间的转换是可能的。

例如,您将标头定义为具有本机枚举和常量的完全本机代码;然后,您可以将此标头包含在100%本机项目和C ++ / CLI项目中,这也可以将枚举的转换(see this thread)提供给相应的.Net类型。

如果您不想拥有此中间转换层,C ++ / CLI还可以为您提供C ++宏的全部功能,因此您可以创建一个包含ENUM_HEADER和CONSTANT等宏的文件,并将这些宏评估为适当的托管或本机形式相当干净和直接(你不能用C#做,因为它有更弱的预处理器)。然后,生成的程序集基本上是此标题和适当的宏定义,而不是其他内容。

3)在一些外部文件(XML,INI,等等......)中定义值,并且只在C#和C ++中实现加载逻辑(这实际上可能是最干净的解决方案)。

答案 1 :(得分:4)

一种选择是使用T4:这是Visual Studio中内置的代码生成语言。它主要用于C#,但是C++ apparantly works too

您在预处理器上遇到困难的原因之一是C#和C ++具有相同的注释语法:您无​​法使用注释为C ++预处理器隐藏不兼容的C#特定语法。也就是说,你可以尝试VB :)。