强制警告/错误

Question

我想在我的代码中加入一些警告或错误.我正在使用visual studio 2010.

我曾经#error和#warning在Xcode,但视觉工作室不知道这些指令.

Answer 1

在搜索了不同的文章后,我终于找到了在Visual Studio 2010中运行的解决方案:

#define STRINGIZE_HELPER(x) #x
#define STRINGIZE(x) STRINGIZE_HELPER(x)
#define __MESSAGE(text) __pragma( message(__FILE__ "(" STRINGIZE(__LINE__) ")" text) ) 
#define WARNING(text) __MESSAGE( " : Warning: " #text )
#define ERROR(text) __MESSAGE( " : Error: " #text )
#define MESSAGE(text) __MESSAGE( ": " #text )
#define TODO(text) WARNING( TODO: text )

你可以用它作为:

WARNING( This will be a compiler warning );
ERROR( This will be a compiler error );
MESSAGE( Well this is what I have to say about this code );
TODO( Still have to fix 3D rendering );

注意,TODO()也会生成编译器警告; 如果您不想将TODO注册为警告,请改用:

#define TODO(text) MESSAGE( TODO: text )

如果要在warnings/errors/TODO中显示函数名称,请改用:

#define WARNING(text) __MESSAGE( " : Warning: (" __FUNCTION__ "): " #text )
#define ERROR(text) __MESSAGE( " : Error: (" __FUNCTION__ "): " #text )
#define MESSAGE(text) __MESSAGE( ": (" __FUNCTION__ "): " #text )
#define TODO(text) __MESSAGE( " : Warning: TODO: (" __FUNCTION__ ") " #text )

Answer 2

我知道这个建议有点晚了,但......

您可以通过以下技巧实现您想要的目标:

// stringised version of line number (must be done in two steps)
#define STRINGISE(N) #N
#define EXPAND_THEN_STRINGISE(N) STRINGISE(N)
#define __LINE_STR__ EXPAND_THEN_STRINGISE(__LINE__)

// MSVC-suitable routines for formatting <#pragma message>
#define __LOC__ __FILE__ "(" __LINE_STR__ ")"
#define __OUTPUT_FORMAT__(type) __LOC__ " : " type " : "

// specific message types for <#pragma message>
#define __WARN__ __OUTPUT_FORMAT__("warning")
#define __ERR__ __OUTPUT_FORMAT__("error")
#define __MSG__ __OUTPUT_FORMAT__("programmer's message")
#define __TODO__ __OUTPUT_FORMAT__("to do")

然后生成一条消息,例如:

#pragma message ( __MSG__ "my message" )

(来自http://rhubbarb.wordpress.com/2009/04/08/user-compilation-messages-c-or-c/)

Answer 3

您可以使用#pragma warning ...

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