goplus / igop

The Go/Go+ Interpreter

iGo+ The Go/Go+ Interpreter

Go Version

• Go1.18 ~ Go1.22
• macOS Linux Windows WebAssembly GopherJS and more.

ABI

support ABI0 and ABIInternal

• ABI0 stack-based ABI

• ABIInternal register-based Go calling convention proposal

  • Go1.17: amd64
  • Go1.18: amd64 arm64 ppc64/ppc64le
  • Go1.19: amd64 arm64 ppc64/ppc64le riscv64
  • Go1.20: amd64 arm64 ppc64/ppc64le riscv64
  • Go1.21: amd64 arm64 ppc64/ppc64le riscv64
  • Go1.22: amd64 arm64 ppc64/ppc64le riscv64

Generics

• support generics (Go1.18 ~ Go1.22)
• support Go1.20 nested type-parameterized declarations on Go1.18/Go1.19 (Experimental)

runtime.GC

igop.Mode ExperimentalSupportGC

experimental support runtime.GC and runtime.SetFinalizer

install igop command line

Go version < 1.17:

go get -u github.com/goplus/igop/cmd/igop

Go version >= 1.17:

go install github.com/goplus/igop/cmd/igop@latest

igop command

igop             # igop repl mode
igop run         # run a Go/Go+ package
igop build       # compile a Go/Go+ package
igop test        # test a package
igop verson      # print version
igop export      # export Go package to igop builtin package

igop run mode

Usage: igop run [build flags] [package] [arguments...]
  -exp-gc
    	experimental support runtime.GC
  -mod value
    	module download mode to use: readonly, vendor, or mod.
  -ssa
    	print SSA instruction code
  -ssa-trace
    	trace SSA interpreter code
  -tags value
    	a comma-separated list of build tags to consider satisfied during the build
  -v	print the names of packages as they are compiled.
  -x	print the commands.

igop repl mode

igop                       # run repl mode, support Go/Go+
igop repl                  # run repl mode, support Go/Go+
igop repl -go              # run repl mode, disable Go+ syntax

igop test unsupport features

• test -fuzz
• test -cover

igop demo

go js playground (gopherjs)

• https://jsplay.goplus.org/
• https://github.com/goplusjs/play

go repl playground (gopherjs/wasm)

• https://repl.goplus.org/
• https://github.com/goplusjs/repl

ispx

https://github.com/goplus/ispx

run simple Go source demo

package main

import (
	"github.com/goplus/igop"
	_ "github.com/goplus/igop/pkg/fmt"
)

var source = `
package main
import "fmt"
type T struct {}
func (t T) String() string {
	return "Hello, World"
}
func main() {
	fmt.Println(&T{})
}
`

func main() {
	_, err := igop.RunFile("main.go", source, nil, 0)
	if err != nil {
		panic(err)
	}
}

run simple Go+ source demo

package main

import (
	"github.com/goplus/igop"
	_ "github.com/goplus/igop/gopbuild"
)

var gopSrc string = `
fields := [
	"engineering",
	"STEM education", 
	"and data science",
]

println "The Go+ language for", fields.join(", ")
`

func main() {
	_, err := igop.RunFile("main.gop", gopSrc, nil, 0)
	if err != nil {
		panic(err)
	}
}

igop more demo

https://github.com/visualfc/igop_demo