Metaprogramming Elixir by Chris McCord

Author:Chris McCord
Language: eng
Format: epub, pdf
Tags: Pragmatic Bookshelf
ISBN: 978-1-68050-041-7
Publisher: The Pragmatic Bookshelf, LLC

​- ​@locales​ {name, mappings}

​- ​end​

​20 ​end​

​-

​- ​def​ compile(translations) ​do​

​- ​# TBD: Return AST for all translation function definitions​

​- ​end​

​25 ​end​

Just like our accumulated @tests attribute in our Assertion module from the ​code​​​, we registered an accumulated @locales attribute on line 5. Next, we wired up the __before_compile__ hook in our Translator.__using__ macro. On line 13, we added a placeholder to delegate to a compile function to carry out the code generation from our locale registrations, but we left the compile implementation for a later step. Finally, we defined our locale macro that will register a locale name and list of translations to be used by compile in our __before_compile__ hook.

With the accumulated attribute registrations wired up, we have all the necessary information to produce an AST of t/3 function definitions. If you like recursion, you’re in for a treat. If not, pay attention and we’ll break it down.

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