lorenzleutgeb / gothon

A Python interpreter written in Go

Gothon

A Python interpreter written in Go written as part of the course Abstract Machines (german) at Vienna University of Technology.

🚨 ATTENTION: This codebase is not maintained. It only covers a small subset of all Python features. It should not be used in production. It exists for educational purposes.

Scope

Gothon is only an interpreter, not a compiler. It relies on CPython (the de facto standard Python runtime) to compile human readable source code into machine readable bytecode.

Gothon is intended to interpret bytecode (which is generated using CPython ahead of time) and actually run the program. It is limited in this aspect on purpose. The goal of the project (at least for now) is not to build a compiler, but a virtual machine that leverages the compiler built into CPython.

Current Status

Gothon is able to interpret the most basic instructions generated by CPython. This means arithmetic and function calls.

Future

It would be cool if Gothon would at some point be able to

• resolve import statements.
• understand classes.
• deal with exception handling.
• ...

like a production-grade runtime. Contributions to the project are welcome.

_{The Go Gopher was created by Renée French. The Python Logo is a registered trademark of the Python Software Foundation}

gothon's Issues

Error in Build!

$ sudo chmod +777 fetchbench.sh

$ ./fetchbench.sh

.
.
.
.
U benchmarksgame/bench/threadring/threadring.rust
U benchmarksgame/bench/threadring/threadring.rust-2.rust
U benchmarksgame/bench/threadring/threadring.sbcl
U benchmarksgame/bench/threadring/threadring.sbcl-2.sbcl
U benchmarksgame/bench/threadring/threadring.vw-2.vw
U benchmarksgame/bench/threadring/threadring.yarv
U benchmarksgame/bench/threadring/threadring.yarv-2.yarv
'benchmarksgame/bench/revcomp/revcomp.python3-4.python3' -> './test/revcomp.py'
'benchmarksgame/bench/fannkuchredux/fannkuchredux.python3-4.python3' -> './test/fannkuchredux.py'

$ make

go get -d
go test
?   	github.com/lorenzleutgeb/gothon	[no test files]
GOARCH="amd64"
GOBIN=""
GOEXE=""
GOHOSTARCH="amd64"
GOHOSTOS="linux"
GOOS="linux"
GOPATH="/home/guest/go"
GORACE=""
GOROOT="/usr/lib/go-1.8"
GOTOOLDIR="/usr/lib/go-1.8/pkg/tool/linux_amd64"
GCCGO="/usr/bin/gccgo"
CC="gcc"
GOGCCFLAGS="-fPIC -m64 -pthread -fmessage-length=0 -fdebug-prefix-map=/tmp/go-build586160022=/tmp/go-build -gno-record-gcc-switches"
CXX="g++"
CGO_ENABLED="1"
PKG_CONFIG="pkg-config"
CGO_CFLAGS="-g -O2"
CGO_CPPFLAGS=""
CGO_CXXFLAGS="-g -O2"
CGO_FFLAGS="-g -O2"
CGO_LDFLAGS="-g -O2"
go version go1.8 linux/amd64
go build -work -x -v -o 'gothon' \
	-ldflags "-X main.Version '1533f26' -X main.BuildTime '2017-04-16T18:16:19+04:30'"
WORK=/tmp/go-build469966212
github.com/lorenzleutgeb/gothon
mkdir -p $WORK/github.com/lorenzleutgeb/gothon/_obj/
mkdir -p $WORK/github.com/lorenzleutgeb/gothon/_obj/exe/
cd /home/guest/go/src/github.com/lorenzleutgeb/gothon
/usr/lib/go-1.8/pkg/tool/linux_amd64/compile -o $WORK/github.com/lorenzleutgeb/gothon.a -trimpath $WORK -p main -complete -buildid 58ef92c5d82b53a6922427c87fd97e7a1b3d6019 -D _/home/guest/go/src/github.com/lorenzleutgeb/gothon -I $WORK -pack ./args.go ./builtin.go ./code.go ./frame.go ./function.go ./gothon.go ./marshal.go ./module.go ./object.go ./reader.go ./stack.go ./sys.go ./types.go
cd .
/usr/lib/go-1.8/pkg/tool/linux_amd64/link -o $WORK/github.com/lorenzleutgeb/gothon/_obj/exe/a.out -L $WORK -extld=gcc -buildmode=exe -buildid=58ef92c5d82b53a6922427c87fd97e7a1b3d6019 -X main.Version 1533f26 -X main.BuildTime 2017-04-16T18:16:19+04:30 $WORK/github.com/lorenzleutgeb/gothon.a
# github.com/lorenzleutgeb/gothon
/usr/lib/go-1.8/pkg/tool/linux_amd64/link: -X flag requires argument of the form importpath.name=value
Makefile:9: recipe for target 'all' failed
make: *** [all] Error 2

how fix?

Could you add LICENSE file?

First of all, thanks for sharing a great software!

Could you add LICENSE file?
The following page may help for choosing a license.
Choose an open source license - Choose a License

I hope you choose a permissive license like MIT or Apache license.
Thanks!