git clone git://github.com/conanite/rainbow
cd rainbow
chmod 755 rainbow.sh
./rainbow.sh
arc> (load "unit.arc")
nil
arc> (load "foundation-test.arc")
#hash((passed . 258) (failed . 0))
nil
(nsv) works, as far as I can tell - I can create posts and comments, but I haven't pushed it all the way yet.
Please note that I'm a complete lisp n00b - my only experience is from poking around with my .emacs file years ago, and reading Godel, Escher, Bach many years prior to that. Rainbow is probably full of terrible misunderstandings, and my primary goal in building it was to get a grasp of how lisp works (in particular, continuations, tail-call optimisation, and macros - completely alien stuff in javaland where I'm from).
In particular, the following areas are implemented dubiously or not at all:
- complex numbers (not at all)
- escape sequences in strings (\n and \" but no others)
- disp and write probably don't behave as differently as they should - disp makes a special case for strings but that's about all
- certain math operations always return a real number (eg sqrt) - Arc returns a rational where possible
- some macro expansion still happens at runtime
- continuations can be re-entered in a different thread - don't know if this is supposed to be possible, although it seems useful.
- optional arguments work at the top level ... but I haven't even tried optionals nested deep inside a destructuring params list
- Java expects you to decide whether you want characters or bytes when you open a stream, whereas arc seems to allow mixed character and byte access. This might give rise to horrible bugs.
- other stuff that I haven't thought of
The excellent documentation work by kens at http://arcfn.com helped enormously in producing this.
good luck, and enjoy ...
% ./rainbow.sh
Buildfile: build.xml
compile-parser:
compile:
jar:
BUILD SUCCESSFUL
Total time: 0 seconds
Unable to access jarfile /Users/jd/tmp/rainbow/build/dist/rainbow.jar
% java -jar build/dist/rainbow/rainbow.jar --strict-arc
Exception in thread "main" java.io.FileNotFoundException: Could not find rainbow/rainbow.arc under [.]
at rainbow.Console.find(Console.java:125)
at rainbow.Console.loadFile(Console.java:133)
at rainbow.Console.main(Console.java:41)-----
% setenv ARC_PATH ~/tmp/arc:./src/arc
% java -jar build/dist/rainbow/rainbow.jar
Exception in thread "main" rainbow.ArcError: call* table not found in environment: if you are not using anarki please specify --strict-arc on the command-line
at rainbow.vm.continuations.FunctionDispatcher.anarkiCompatibleTypeDispatch(FunctionDispatcher.java:68)
at rainbow.vm.continuations.FunctionDispatcher.digestFunction(FunctionDispatcher.java:52)
at rainbow.vm.continuations.FunctionDispatcher.onReceive(FunctionDispatcher.java:38)
at rainbow.vm.continuations.ContinuationSupport.receive(ContinuationSupport.java:28)
at rainbow.vm.Interpreter.interpret(Interpreter.java:30)
at rainbow.vm.continuations.FunctionDispatcher.process(FunctionDispatcher.java:33)
at rainbow.vm.ArcThread.run(ArcThread.java:28)
at rainbow.Console.compileAndEval(Console.java:149)
at rainbow.Console.load(Console.java:140)
at rainbow.Console.loadFile(Console.java:133)
at rainbow.Console.main(Console.java:39)-----
If you are using anarki and still getting this error, then it's a mystery. It might be necessary to expand "~/tmp/arc" into a full path - I know rainbow doesn't expand "~", and I don't know if the shell does. And "~/tmp/arc" should contain arc.arc and the usual arc files from the distribution.
Let me know if it still isn't working.
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