This story starts with someone reporting a very well written and concise issue for Simplify. After digging into it, I found a problem with how smalivm was handling static field initialization. In case you didn’t know, you can initialize a static field in smali like this:
.field private static someInt:I = 5
I’d seen that smali supported this format years ago, and included it in my Smali syntax definitions for Sublime, but I couldn’t ever produce a DEX which used this. Whenever I had a simple, primitive static field,
dx would generate bytecode which initialized the field in the class initializer
Ok, so now I needed to support this in smalivm which means I had to figure out exactly how everything worked, what was valid, what was invalid, and how each type (float, long, int, …) looks. Yay!