History

Torsten Ruger 397eca541a fix class statements to always have Statements as body not sometimes an array, which sits badly in the tree of statements		2017-04-09 09:59:21 +03:00
..
statements	fix class statements to always have Statements as body	2017-04-09 09:59:21 +03:00
README.md	start a vool readme	2017-04-05 14:02:34 +03:00
ruby_compiler.rb	starts on local variable collection	2017-04-08 12:28:31 +03:00
statement.rb	creates methods from method statement	2017-04-08 17:22:53 +03:00
vool_compiler.rb	adds ivar collection with tests	2017-04-08 12:11:52 +03:00

README.md

VOOL

Virtual Object Oriented Language

in other words, ruby without the fluff.

Possibly later other languages can compile to this level, eg by running in the same jvm.

Syntax tree

Vool is the layer of concrete syntax tree. The Parser gem is used to parse ruby. It creates an abstract syntax tree which is then transformed.

The next layer down is the Vom, Virtual object Machine, which uses an instruction tree. That is on the way down we create instructions, but stay in tree format. Only the next step down to the Risc layer moves to an instruction stream.

The nodes of the syntax tree are all the things one would expect from a language, if statements and the like. There is no context yet, and actual objects, representing classes and methods, will be created on the way down.

Fluff

Ruby has lots of duplication to help programmers to write less. An obvious example is the existence of until, which really means if not. Other examples, some more impactful are:

No implicit blocks, those get passed as normal arguments (the last)
No splats
no case
no elseif (no unless, no ternary operator)
no global variables.