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BLOOP AND FLOOP
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In bullet points, for the impatient:
o This is bloop, a BlooP/FlooP compiler
o BlooP and FlooP are from Goedel, Escher, Bach by Doug Hofstader
o You need GHC version 6.4
o You need scsh version 0.6.6 for the Scheme back end
o For the experimental C back end, you probably want gcc
o You need *NIX (GNU/Linux, *BSD, OSX, Solaris _should_ all work).
o The bloop compiler compiles BlooP/FlooP to Scheme. It is by no
means designed to be efficient, and uses the notorious
scheme library procedure call-with-current-continuation liberally.
How to compile:
o type:
make
<wait a while>
su -c make install
<type your root password>
o tadaaah!
How to use:
o bloop takes the following arguments
-h --help this message
-v --version show version
-s --scheme output Scheme
-c --c output "C"
-i --i output IR
-o FILE --output=FILE output FILE
-f FILE input FILE
It needs both the -o and -f arguments, and one of -s, -c, -i
For the time being, it is very picky about the order of these
arguments and will give you an "internal compiler error" if you
offend its sensibilities. I may fix that some time, but someone
might have to bug me...
Compile test.geb to test.c, then run GCC on that:
% bloop -c -o test.c -f test.geb && gcc -o test test.c
Compile test.geb to test.scm, then run that:
% bloop -s -o test.scm -f test.geb && ./test.scm
Enjoy!
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The "bloop" program is a BlooP/FlooP compiler, which takes a
BlooP/FlooP program and turns it into a Scheme program with a shebang
line so that it can be executed by scsh. As an added bonus, you can
easily add code to the "prelude" to make Scheme library functions
available in BlooP/FlooP.
BlooP and FlooP are (similar) programming languages invented by
Douglas Hofstadter for his book "Goedel, Escher, Bach -- an Eternal
Golden Braid."
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All the code from GEB compiles, with the following modifications:
o Since Hofstader does not specify the syntax for a "program", only
for a "procedure", I assume the following convention: a program is
a semicolon-separated sequence of (mixed) procedures and
expressions, followed by a period.
o I allow the use of /* C-style comments */ and // C++ style comments
o The multiplication sign becomes *; the assignment operator <=.
o One of the programs in GEB is missing a semicolon.
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The BlooP/FlooP compiler was written in May 2005 by
Jaap Weel
<weel at ugcs dot caltech dot edu>
but would not have been possible without the Glorious Glasgow Haskell
compiler and Daan Leijen's Parsec and PPrint libraries.
If you, for whatever reason, have found a use for this utterly
frivolous piece of software, I would very much appreciate if you could
let me know at the above e-mail address.