Compile-Time Hooks
Explore how to use compile-time hooks with Elixir's @before_compile attribute to enhance macro-based code generation. Understand creating a mini testing framework with pattern matching, a testing DSL, and responsible macro expansions, enabling cleaner and more flexible test code.
We'll cover the following...
We'll cover the following...
The before_compile module attribute
Elixir allows us to set a special module attribute, @before_compile, to notify the compiler that an extra step is required just before compilation is finished. The @before_compile attribute accepts a module argument where a __before_com- pile__/1 macro must be defined. This macro is invoked just before compilation to perform a final bit of code generation. Let’s apply this hook to fix our test macro.
Using the before_compile module attribute
Let’s update our Assertion module with these ...