Designing Auto Generated Codes

17 Nov 2015 Roppongi.aar #2 @kikuchy

Hiroshi Kikuchi (@kikuchy)

Belonging to , inc , Working on , inc (mixi group)

Making Dating App for Android

Strict review OJISAN

Who am I

APT made our work reduced!!

So, you use APT, and be happy!!

\\( '' ) //

I was going to talk about like that, but

Oh, you are already using APT.

fin.

(^o^)

So, Ill talk about

Designing Auto Generated Codes

What is the best way to use Generated Code in our project?

Please consider and discuss.

The Problem Make Us Wakeful

Case 1 (/2)

If you make an awesome library hiding generated codes

// Fields@ExecuteSomethingString foo;

// Executor class ThisClass$$Executor is generated.// My library loads executor class automatically!AwesomeLibrary.execute(this);

Alice changes Naming Rule of Generated Class.

ex) (ClassName)$$Executor -> (ClassName)$$Doer

proguard-rules.pro ????

< Hey, I obfuscated your code!

Proguard @ Production Build

Case 2 (/2)

If you make awesome proguard-safe library

// Fields@ExecuteSomethingString foo;

// Executor class ThisClassExecutor is generated.// There are no reflection, no ClassNotFoundException!!new ThisClassExecutor().execute(this);

Bob often asks you Whats the name of Generated Classes and methods and constructor arguments and

interfaces will use in Generated Code blablabla

Why ask me repeatedly? Why I have to remember invisible codes?

Bob