'const char* transformSrc_MyExpr(const char* src);' We're the compiler to invoke some function like that at compile time, it would be much more simple. I'm no

'const char* transformSrc_MyExpr(const char* src);' We're the compiler to invoke some function like that at compile time, it would be much more simple. I'm not suggesting this exactally, or even something very similar, but serves as an example.