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# parscan
Parscan is an experimental project to test a single parser to multiple
languages and virtual machines.
The first language definition is a subset of Go, enough to implement
simple benchmarks, as fibonacci numbers.
The first VM is a stack machine, operated by walking directly the AST.
The next step is to add a byte-code based VM and the corresponding byte code
generator.
Further steps is to get closer to full Go spec and / or introduce new
languages definitions and new VM implementations.
Note: this is highly experimental and unstable.
## Usage
`go run ./cmd/gint < ./samples/fib`
To debug visually the AST, you can set the `DOT` env to a command able
to a display a graphviz dot input, such as `dot -Txlib` or `dotty -`
(for old graphviz versions like mine):
`DOT="dot -Txlib" go run ./cmd/gint < ./samples/fib`
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