89 lines
3.5 KiB
Plaintext
89 lines
3.5 KiB
Plaintext
TinyScheme would not exist if it wasn't for MiniScheme. I had just
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written the HTTP server for Ovrimos SQL Server, and I was lamenting the
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lack of a scripting language. Server-side Javascript would have been the
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preferred solution, had there been a Javascript interpreter I could
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lay my hands on. But there weren't. Perl would have been another solution,
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but it was probably ten times bigger that the program it was supposed to
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be embedded in. There would also be thorny licencing issues.
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So, the obvious thing to do was find a truly small interpreter. Forth
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was a language I had once quasi-implemented, but the difficulty of
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handling dynamic data and the weirdness of the language put me off. I then
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looked around for a LISP interpreter, the next thing I knew was easy to
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implement. Alas, the LeLisp I knew from my days in UPMC (Universite Pierre
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et Marie Curie) had given way to Common Lisp, a megalith of a language!
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Then my search lead me to Scheme, a language I knew was very orthogonal
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and clean. When I found Mini-Scheme, a single C file of some 2400 loc, I
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fell in love with it! What if it lacked floating-point numbers and
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strings! The rest, as they say, is history.
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Below are the original credits. Don't email Akira KIDA, the address has
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changed.
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---------- Mini-Scheme Interpreter Version 0.85 ----------
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coded by Atsushi Moriwaki (11/5/1989)
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E-MAIL : moriwaki@kurims.kurims.kyoto-u.ac.jp
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THIS SOFTWARE IS IN THE PUBLIC DOMAIN
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------------------------------------
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This software is completely free to copy, modify and/or re-distribute.
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But I would appreciate it if you left my name on the code as the author.
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This version has been modified by R.C. Secrist.
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Mini-Scheme is now maintained by Akira KIDA.
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This is a revised and modified version by Akira KIDA.
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current version is 0.85k4 (15 May 1994)
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Please send suggestions, bug reports and/or requests to:
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<SDI00379@niftyserve.or.jp>
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Features compared to MiniSCHEME
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-------------------------------
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All code is now reentrant. Interpreter state is held in a 'scheme'
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struct, and many interpreters can coexist in the same program, possibly
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in different threads. The user can specify user-defined memory allocation
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primitives. (see "Programmer's Reference")
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The reader is more consistent.
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Strings, characters and flonums are supported. (see "Types")
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Files being loaded can be nested up to some depth.
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R5RS I/O is there, plus String Ports. (see "Scheme Reference","I/O")
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Vectors exist.
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As a standalone application, it supports command-line arguments.
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(see "Standalone")
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Running out of memory is now handled.
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The user can add foreign functions in C. (see "Foreign Functions")
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The code has been changed slightly, core functions have been moved
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to the library, behavior has been aligned with R5RS etc.
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Support has been added for user-defined error recovery.
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(see "Error Handling")
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Support has been added for modular programming.
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(see "Colon Qualifiers - Packages")
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To enable this, EVAL has changed internally, and can
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now take two arguments, as per R5RS. Environments are supported.
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(see "Colon Qualifiers - Packages")
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Promises are now evaluated once only.
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(macro (foo form) ...) is now equivalent to (macro foo (lambda(form) ...))
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The reader can be extended using new #-expressions
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(see "Reader extensions")
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