C++ 在字符串变量中包括行号和文件名

有没有一种简单的方法可以构建包含

\u文件

和

\u行

值的字符串

我可以这样做：

std::stringstream ss;
ss << "Error in "<<_FILE_<<":"<<_LINE_<<" - too many bees!";
log(ss.str());

---

在C++/STL/boost中有没有一种简洁的方法可以做到这一点？注意我只限于旧的编译器，没有C++11

正如Alex评论的那样：通过双宏扩展，将

\uuuuu LINE\uuuuu

变成一个字符串，并让编译器为您连接字符串：

#define S(x) #x
#define S_(x) S(x)
#define S__LINE__ S_(__LINE__)

log("Error in "__FILE__":"S__LINE__" - too many bees!");

要减少键入，正如greatwolf所建议的：

#define logfl(s) log("Error in "__FILE__":"S__LINE__" - "s)

logfl("too many bees!");

---

顺便说一句，应该是

\uuuuuuuuuuuuu

和

\uuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuu

我看到的问题有单下划线和双下划线，还有

\uuuuuuuuuuuuuuuuuuuuuu如果有人为其中一个问题提供答案，那将是理想的。@John您需要自定义日志消息的哪一部分？我怀疑每次你想记录一些东西时，你都想继续键入
\uuuuu FILE\uuuuuuu
和
\uuuuuu LINE\uuuuuuuuuu
。我还发现，为某个返回ostream&的函数定义日志非常有用，这样你就可以在那里记录所有类型的对象
#define logfl(s) log("Error in "__FILE__":"S__LINE__" - "s)

logfl("too many bees!");