wodan58 / joy

Manfred von Thun's Programming Language Joy

Joy

Build	Linux	Windows	Coverity
status

This is the NOBDW version of Joy1. Joy is a decent language and needs a ditto presentation. The original version can be seen here.

Changes

Some changes were done that make the build environment me happy. One new thing is a portable makefile, following this advice. There is something different in these sources compared to the ones that can be downloaded from the archived original and that is the comments at the start of main.c and of interp.c. Manfred von Thun really wanted those comments in main.c, but the newsgroup did not allow attachments, so it was never published as such. As for the comments in interp.c, I added them because I like some version history. It proves that the language and the implementation was not done over night. In fact, according to this interview the implementation in C was started in 1995.

Build instructions

mkdir build
cd build
cmake ..
cmake --build .

cp ../lib/usrlib.joy ~
mkdir ~/usrlib
cp ../lib/* ~/usrlib

Then manually change the path to inilib.joy in ~/usrlib.joy from "../lib" to "usrlib".

Build with MSVC

mkdir build
cd build
cmake ..
cmake --build . --config Release
copy Release\joy.exe

copy ..\lib\usrlib.joy %HOMEPATH%
mkdir %HOMEPATH%\usrlib
copy ..\lib\*.* %HOMEPATH%\usrlib

Then manually change the path to inilib.joy in %HOMEPATH%\usrlib.joy from "../lib" to "usrlib".

Running

joy -h

gives an overview of available options.

Testing

cd ../test2
for i in *.joy
do
  ../build/joy $i >$i.out
done
grep -l false *.out

There are some false positives. The test files assume that usrlib.joy was loaded successfully.

See also

Implementation	Dependencies
42minjoy
joy0
joy1	BDW garbage collector
Foy	BDW garbage collector
Moy	BDW garbage collector and Lex & Yacc

Documentation
Legacy Docs
User Manual
Comparison (PDF)

joy's Issues

Does not build on mac

Hello, here is a diff that makes it build on mac https://pastebin.com/MDwSwRGZ
Best,

Errors on Arch

/home/neauoire/Git/Joy/gc.c: In function ‘GC_realloc’:
/home/neauoire/Git/Joy/gc.c:369:27: error: pointer ‘old’ may be used after ‘realloc’ [-Werror=use-after-free]
  369 |         remind(ptr, size, forget(old));
      |                           ^~~~~~~~~~~
/home/neauoire/Git/Joy/gc.c:364:16: note: call to ‘realloc’ here
  364 |     if ((ptr = realloc(old, size)) == 0)
      |                ^~~~~~~~~~~~~~~~~~
In file included from /home/neauoire/Git/Joy/gc.c:26:
In function ‘forget’,
    inlined from ‘GC_realloc’ at /home/neauoire/Git/Joy/gc.c:369:20:
/home/neauoire/Git/Joy/khash.h:507:28: error: pointer ‘old’ may be used after ‘realloc’ [-Werror=use-after-free]
  507 | #define kh_get(name, h, k) kh_get_##name(h, k)
      |                            ^~~~~~~~~~~~~~~~~~~
/home/neauoire/Git/Joy/gc.c:348:16: note: in expansion of macro ‘kh_get’
  348 |     if ((key = kh_get(Backup, MEM, (uint64_t)ptr)) != kh_end(MEM)) {
      |                ^~~~~~
/home/neauoire/Git/Joy/gc.c: In function ‘GC_realloc’:
/home/neauoire/Git/Joy/gc.c:364:16: note: call to ‘realloc’ here
  364 |     if ((ptr = realloc(old, size)) == 0)
      |                ^~~~~~~~~~~~~~~~~~
cc1: all warnings being treated as errors
make[2]: *** [CMakeFiles/joy.dir/build.make:202: CMakeFiles/joy.dir/gc.c.o] Error 1
make[1]: *** [CMakeFiles/Makefile2:84: CMakeFiles/joy.dir/all] Error 2
make: *** [Makefile:91: all] Error 2

nonportable build scripts

You mention changing the makefile to be more portable, but ls -Q is available on BSD. I'm sure there are others because I've spent all day trying to get this to compile for macos to no avail