DISCLAIMER: These notes are from the defunct k8 project which precedes SquirrelJME. The notes for SquirrelJME start on 2016/02/26! The k8 project was effectively a Java SE 8 operating system and as such all of the notes are in the context of that scope. That project is no longer my goal as SquirrelJME is the spiritual successor to it.


Things are OK so far, however they are a bit clunky and still a bit convoluted, but not as bad as before. The main pain is managing multiple stacks due to the long and double sizes on them.


I might change comet around a bit to make it tougher and to handle the quirks an architecture has when decoding, so as such I can have a Quirk class that manages such things. Then I can have stack management there with stack plugins and such and reduce the complexity of the code in JavaByteLang.


I also need to make it truly SSA rather than what I currently have, but that can be fixed easily with this Quirk system.


Maybe instead of all this, I can just make a converter that translates the stack based nature of Java purely in a register based form. Well that is what I am currently doing anyway. Something is wrong with the solar system I just need to fix the bad bits of it.


I must write a new better leaner TypeInfo that is not a gigantic mess, hopefully one that is not 1600 lines of mess. Then after that I will go back to the compilation system and devise a leaner means of representing code, I think I will break from SSA and instead two something like three address code or similar with jumps and such back and forth. Translate the stack based Java to a purely register based one.


There are essentialy 3 main signature types, class signatures, field signatures, and method signatures. Fields could be a super class signature if they meet the correct criteria, that is being a single specifier. I could recycle the types, but I could also split them and use them at specific times so when a class, field, or method specifier is requested. On another note I should probably squash the Logical class and instead directly translate the ClassFiles using a mutator of sorts to native code. The Logical is pretty much a container of native codes during retranslation, but I feel that it is not needed at all and just adds another level of indirection. The solar system stuff is OK but it is far too sparse, I have it thread safe but in most cases generation of code would only pertain to a single thread. Locks complicates the thing also. So if I were to then merge the solar system and logical system and make them leaner and less bulky, I can do compilation rather quickly. The only real thing that is needed is the caching of constant pool entries. Since the grabbing of entries is very complex, it would be best to cache their state entirely at once depending on what they are as needed rather than dereferencing them all at once, this way it could be checked at the beginning rather than when they are actually used.