Integrate Lua with C++

8

Abstracting a C++ Type Exporter

In the previous chapter, we learned how to export a C++ class to Lua as a user-defined type. An instance of the class is exported to Lua to serve as the prototype for the type.

The exercise from the previous chapter required you to create a factory class for the type. However, with that requirement, each type needs its own factory class.

In this chapter, we will learn how to implement a general C++ type exporter so that you can use it as the factory class for any C++ type, without redoing the work.

In this chapter, we will cover the following topics:

• Reviewing the factory implementation
• Designing a type exporter
• Stubbing the type exporter
• Defining LuaModuleDef
• Re-implementing luaNew
• Are you flexible enough? ...