38 lines
1.0 KiB
ReStructuredText
38 lines
1.0 KiB
ReStructuredText
=======
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UNSLISP
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=======
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R7RS compiler written in a basic form of Scheme. Compiles to Universal
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Service GLLV bytecode.
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License: GPL-3.0-only
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-------------------
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Source Restrictions
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-------------------
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Although the compiler handles all of R7RS, the source of UNSLISP is
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designed to be used by a severely limited Scheme interpreter, which
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* lacks ``call/cc``, ``call-with-values``, etc
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* lacks user definable macros
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* has fixnums only
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* only uses immutable strings
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* does not use "load" recursively
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* uses R3RS essential procedures/syntax only (with some exceptions)
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The goal is to have the compiler run under the MiniScheme in ``miniscm``
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in DOS, and then run in GLLV to compile itself.
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A proper implementation must have, in addition to R3RS,
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* ``open-input-port``, ``read-char``
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* ``open-output-port``, ``write-char``
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* ``cond-expand``
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* ``and``, ``or``
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* ``error``
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Hopefully your implementation has input and output ports (there's no other
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way to write a compiler). Everything else can be expressed in terms of
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macros or R3RS essential procedures.
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