Created
November 3, 2023 19:57
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Go, Lua and JS interpreters in Go
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| module interpreters | |
| go 1.21 | |
| require ( | |
| github.com/dop251/goja v0.0.0-20231027120936-b396bb4c349d | |
| github.com/mymmrac/x v0.0.0-20231103184157-cf259b37ba38 | |
| github.com/traefik/yaegi v0.15.1 | |
| github.com/yuin/gopher-lua v1.1.0 | |
| ) | |
| require ( | |
| github.com/dlclark/regexp2 v1.10.0 // indirect | |
| github.com/go-sourcemap/sourcemap v2.1.3+incompatible // indirect | |
| github.com/google/pprof v0.0.0-20230926050212-f7f687d19a98 // indirect | |
| golang.org/x/text v0.13.0 // indirect | |
| ) |
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| package main | |
| import ( | |
| "fmt" | |
| "io" | |
| "os" | |
| "reflect" | |
| "github.com/dop251/goja" | |
| "github.com/mymmrac/x" | |
| "github.com/traefik/yaegi/interp" | |
| "github.com/traefik/yaegi/stdlib" | |
| lua "github.com/yuin/gopher-lua" | |
| ) | |
| const fileName = "hello" | |
| func main() { | |
| mainGo() | |
| mainLua() | |
| mainJS() | |
| } | |
| // ==== // ==== // | |
| // https://github.com/traefik/yaegi | |
| func mainGo() { | |
| i := interp.New(interp.Options{}) | |
| i.Use(stdlib.Symbols) | |
| _, err := i.Eval(`import "os"`) | |
| x.Assert(err == nil, err) | |
| err = i.Use(map[string]map[string]reflect.Value{ | |
| "my/": { | |
| "FileName": reflect.ValueOf(filenameGo), | |
| }, | |
| }) | |
| x.Assert(err == nil, err) | |
| i.ImportUsed() | |
| _, err = i.Eval(`file, err := os.Open(my.FileName("` + fileName + `"))`) | |
| x.Assert(err == nil, err) | |
| g := i.Globals() | |
| x.Assert(len(g) != 0) | |
| file := g["file"].Interface().(*os.File) | |
| if !g["err"].IsNil() { | |
| err = g["err"].Interface().(error) | |
| } | |
| if err != nil { | |
| fmt.Println(err) | |
| return | |
| } | |
| data, err := io.ReadAll(file) | |
| x.Assert(err == nil, err) | |
| fmt.Println(string(data)) | |
| } | |
| func filenameGo(name string) string { | |
| return name + ".go.txt" | |
| } | |
| // ==== // ==== // | |
| // https://github.com/yuin/gopher-lua | |
| func mainLua() { | |
| L := lua.NewState() | |
| defer L.Close() | |
| L.SetGlobal("file_name", L.NewFunction(filenameLua)) | |
| err := L.DoString(` | |
| local file = assert(io.open(file_name("` + fileName + `"), "r")) | |
| content = file:read("*all") | |
| file:close() | |
| `) | |
| x.Assert(err == nil, err) | |
| fmt.Println(L.GetGlobal("content").String()) | |
| } | |
| func filenameLua(L *lua.LState) int { | |
| name := L.ToString(1) | |
| L.Push(lua.LString(name + ".lua.txt")) | |
| return 1 | |
| } | |
| // ==== // ==== // | |
| // https://github.com/dop251/goja | |
| func mainJS() { | |
| vm := goja.New() | |
| err := vm.Set("fileName", filenameJS) | |
| x.Assert(err == nil, err) | |
| v, err := vm.RunString(`fileName("` + fileName + `")`) | |
| x.Assert(err == nil, err) | |
| fileName := v.Export().(string) | |
| file, err := os.Open(fileName) | |
| x.Assert(err == nil, err) | |
| data, err := io.ReadAll(file) | |
| x.Assert(err == nil, err) | |
| fmt.Println(string(data)) | |
| } | |
| func filenameJS(call goja.FunctionCall, vm *goja.Runtime) goja.Value { | |
| name := call.Argument(0).Export().(string) | |
| return vm.ToValue(name + ".js.txt") | |
| } |
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