39 lines
1.0 KiB
ReStructuredText
39 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 essental procedures 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
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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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If your system supports any macro system at all, ``cond-expand``,
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``and``, and ``or`` can be implemented. ``error`` can be implemented
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as in SRFI-23 : https://srfi.schemers.org/srfi-23/srfi-23.html .
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