33 lines
1.1 KiB
Markdown
33 lines
1.1 KiB
Markdown
# VOOL
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Virtual Object Oriented Language
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in other words, ruby without the fluff.
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Possibly later other languages can compile to this level, eg by running in the same jvm.
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## Syntax tree
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Vool is the layer of concrete syntax tree. The Parser gem is used to parse ruby. It creates
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an abstract syntax tree which is then transformed.
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The next layer down is the Mom, Minimal object Machine, which uses an instruction tree.
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That is on the way down we create instructions, but stay in tree format. Only the next step
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down to the Risc layer moves to an instruction stream.
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The nodes of the syntax tree are all the things one would expect from a language, if statements
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and the like. There is no context yet, and actual objects, representing classes and
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methods, will be created on the way down.
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## Fluff
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Ruby has lots of duplication to help programmers to write less. An obvious example is the
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existence of until, which really means if not. Other examples, some more impactful are:
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- No implicit blocks, those get passed as normal arguments (the last)
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- No splats
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- no case
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- no elseif (no unless, no ternary operator)
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- no global variables.
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