25 lines
863 B
Markdown
25 lines
863 B
Markdown
Parser
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This includes the parser and generated ast.
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Parslet is really great in that it:
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- does not generate code but instean gives a clean dsl to define a grammar
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- uses ruby modules so one can split the grammars up
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- has a seperate tranform stage to generate an ast layer
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Especially the last point is great. Since it is seperate it does not clutter up the actual grammar.
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And it can generate a layer that has no links to the actual parser anymore, thus saving/automating
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a complete tranformation process.
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Virtual Machine
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===============
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This is the logic that uses the generated ast to produce code, using the asm layer.
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Apart from shuffeling things around from one layer to the other, it keeps track about registers and
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provides the stack glue. All the stuff a compiler would usually do.
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Also all syscalls are abstracted as functions.
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