A tool to auto separate C++ header and implementation

Question

I always feel a pain when I switch from C# or python back to C++ and meet the .h and .cpp separation.

So I thought that maybe there is a tool that at pre-compilation step can take header (o file with some special extension) and split it to .h and .cpp?

So if original file like this:

class MyClass
{
public:

    void HaHaHa()
    {
       //some logic
    }
 }

And a result would be as .h and .cpp files:

//.h 

class MyClass
{
public:

    void HaHaHa();
}

// .cpp 

#include "MyClass.h"

void MyClass::HaHaHa() 
{
    //some logic
}

Some googling didn't show up the ready to use tools. But I'm pretty sure it is not a new idea and such tools should exist.

P.S. It is known that i.e. Visual Assist X and VIM has tools to handle .h and .cpp separation with less pain. But I'm asking about a possibility to have a code in one files and separate them automatically as a part of build process.

Answer 1

This tool may help you: lazycplusplus [Wayback link because the domain was lost]

Project repo: https://github.com/mjspncr/lzz3

Answer 2

I think you're going about it backwards: you want to write the header file, without the implementations, before writing the code. What would be nice is a tool which would read the header file and generate the outline code for the implementation: with namespaces, nested classes and such, just the wrappers can be quite verbose. But the closest I've seen is Rational Rose, which starts with a (highly) annotated ULM diagram, and generates both the header and the boilerplate of the implementation. It's a very nice tool—I use it whenever it's available—but it's a bit pricy for the home user, and probably even for small corporations.