kitech / cygo

A toy programming language base on Golang and compile to C, no name yet

Compile Go to C, with a generic library contains Go core features, like goroutine,channel,GC.

That's will generate minimal binary. The farther plan is compile any Go package to C.

The pain of Go

• Too large binary size
• Not zero cost call with C
• Builtin string/array/map no methods
• Too verbosity error handling, not like the Go2 try error handling proposal

Features

• goroutine
• channel
• defer
• GC
• CGO
• interface
• closure
• string/array/map with lot builtin methods
• catch statement error handling (

  cygo/bysrc/tpkgs/catch2/t.go

  Line 18 in 0f21338

  catch{

  )
• unused var warning, not error
• for range => for in
• type foo struct => struct foo
• unsafe.Pointer => voidptr
• uintptr => usize
• seamless C symbol use
• zero cost C call
• all variables reference

Install

cd $GOPATH
git clone https://github.com/kitech/cygo
cd cygo/bysrc
go build -o cygo

Example

./cygo ./tpkgs/hello
cmake .
make

more examples/tests https://github.com/kitech/cygo/tree/master/bysrc/tpkgs/

Source code structure:

• main compiler source https://github.com/kitech/cygo/tree/master/bysrc/
• goroutine/channel implemention in C https://github.com/kitech/cygo/tree/master/corona-c/
• some go stdlib implemention https://github.com/kitech/cygo/tree/master/xgo/

Supported important syntax

• defer
• closure
• select

Todos

• dynamic stack resize
• correct and more safe point for GC
• support more OS/platforms
• so much to do

Supported original Go packages

• unsafe
• errors

资料

• minigo
• tinygo
• Let's Build A Simple Interpreter https://github.com/rspivak/lsbasi
• dwarf https://github.com/gimli-rs/gimli