46 lines
1.9 KiB
Markdown
46 lines
1.9 KiB
Markdown
## Notice of change
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The stuff below, like the whole of Parfait, was written before soml. Ie before there was a seperate
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language to compile a higher language to. Soml is not so dynamic, could do without much of the
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ObjectSpace that is the core of Parfait.
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So things will change. How will become clear when soml is finished.
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### Parfait: a thin layer
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Parfait is the run-time of the **vm**.
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To be more precise, it is that part of the run-time needed to boot soml.
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The run-time needs to contain quite a lot of functionality for a dynamic system.
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And a large part of that functionality must actually be used at compile time too.
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We reuse the Parfait code at compile-time, to create the data for the compiled vm.
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To do this the vm (re) defines the object memory (in parfait_adapter).
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To do the actual compiling we parse and compile the parfait code and inline it to
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appropriate places.
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A work in progress that started from here : http://salama.github.io/2014/06/10/more-clarity.html
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went on here http://salama.github.io/2014/07/05/layers-vs-passes.html
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A step back: the code (program) we compile runs at run - time.
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And so does parfait. So all we have to do is compile it with the program.
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And thus parfait can be used at run-time.
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It's too simple: just slips off the mind like a fish into water.
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Parfait has a brother, the Builtin module. Builtin contains everything that can not be coded in ruby,
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but we still need (things like List access).
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### Vm vs language- core
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Parfait is not the language core library. Core library functionality differs between
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languages and so the language core lib must be on top of the vm parfait.
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To make this point clear, i have started using different names for the core classes. Hopefully
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more sensible ones, ie List instead of Array, Dictionary instead of Hash.
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Also Parfait is meant to be as thin as humanly possibly, so extra (nice to have) functionality
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will be in future modules.
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