mirror of
https://github.com/ashinn/chibi-scheme.git
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b1c0ea895b
can disable with USE_BIGNUMS=0 - the interactions between this and USE_FLONUMS are messy, so they will likely be merged into a single option in the near future (i.e. you either have only fixnums, or a full range of numeric types). adding rationals based on this would be easy and is a likely future feature. adding native support for complex numbers is unlikely.
52 lines
1.7 KiB
Text
52 lines
1.7 KiB
Text
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Chibi-Scheme
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--------------
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Minimal Scheme Implementation for use as an Extension Language
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http://synthcode.com/wiki/chibi-scheme/
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Chibi-Scheme is a very small but mostly complete R5RS Scheme
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implementation using a reasonably fast custom VM. Chibi-Scheme tries
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as much as possible not to trade its small size by cutting corners,
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and provides full continuations, both low and high-level hygienic
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macros based on syntactic-closures, string ports and exceptions.
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Chibi-Scheme is written in highly portable C and supports multiple
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simultaneous VM instances to run.
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To build, just run "make". This will provide a shared library
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"libchibi-scheme", as well as a sample "chibi-scheme" command-line
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repl. The "chibi-scheme-static" make target builds an equivalent
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static executable.
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You can edit the file config.h for a number of settings, mostly
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disabling features to make the executable smaller. You can specify
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standard options directly as arguments to make, for example
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make CFLAGS=-Os
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to optimize for size, or
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make LDFLAGS=-L/usr/local/lib CPPFLAGS=-I/usr/local/include
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to compile against a library installed in /usr/local.
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By default Chibi uses a custom, precise, non-moving GC. You can link
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against the Boehm conservative GC by editing the config file, or
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directly from make with:
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make USE_BOEHM=1
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See the file main.c for an example of using chibi-scheme as a library.
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The essential functions to remember are:
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sexp_make_context(NULL, NULL, NULL)
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returns a new context
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sexp_eval(context, expr)
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evaluates an s-expression
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sexp_eval_string(context, str)
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reads an s-expression from str and evaluates it
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