status-go/vendor/gopkg.in/olebedev/go-duktape.v3
Adam Babik c9e99c432d migrate to go 1.12 and go modules 2019-06-12 13:12:00 +02:00
..
.gitattributes migrate to go 1.12 and go modules 2019-06-12 13:12:00 +02:00
.gitignore migrate to go 1.12 and go modules 2019-06-12 13:12:00 +02:00
.travis.yml migrate to go 1.12 and go modules 2019-06-12 13:12:00 +02:00
Gopkg.lock migrate to go 1.12 and go modules 2019-06-12 13:12:00 +02:00
Gopkg.toml migrate to go 1.12 and go modules 2019-06-12 13:12:00 +02:00
LICENSE.md Update to go-ethereum 1.8.1 (#702) 2018-02-27 11:39:30 +01:00
README.md migrate to go 1.12 and go modules 2019-06-12 13:12:00 +02:00
api.go Update go-duktape.v3 revision to include submitted patch 2018-06-11 15:53:56 +02:00
appveyor.yml migrate to go 1.12 and go modules 2019-06-12 13:12:00 +02:00
conts.go Update to go-ethereum 1.8.1 (#702) 2018-02-27 11:39:30 +01:00
duk_alloc_pool.c migrate to go 1.12 and go modules 2019-06-12 13:12:00 +02:00
duk_alloc_pool.h migrate to go 1.12 and go modules 2019-06-12 13:12:00 +02:00
duk_config.h migrate to go 1.12 and go modules 2019-06-12 13:12:00 +02:00
duk_console.c migrate to go 1.12 and go modules 2019-06-12 13:12:00 +02:00
duk_console.h migrate to go 1.12 and go modules 2019-06-12 13:12:00 +02:00
duk_logging.c migrate to go 1.12 and go modules 2019-06-12 13:12:00 +02:00
duk_logging.h migrate to go 1.12 and go modules 2019-06-12 13:12:00 +02:00
duk_minimal_printf.c migrate to go 1.12 and go modules 2019-06-12 13:12:00 +02:00
duk_minimal_printf.h migrate to go 1.12 and go modules 2019-06-12 13:12:00 +02:00
duk_module_duktape.c migrate to go 1.12 and go modules 2019-06-12 13:12:00 +02:00
duk_module_duktape.h migrate to go 1.12 and go modules 2019-06-12 13:12:00 +02:00
duk_module_node.c migrate to go 1.12 and go modules 2019-06-12 13:12:00 +02:00
duk_module_node.h migrate to go 1.12 and go modules 2019-06-12 13:12:00 +02:00
duk_print_alert.c migrate to go 1.12 and go modules 2019-06-12 13:12:00 +02:00
duk_print_alert.h migrate to go 1.12 and go modules 2019-06-12 13:12:00 +02:00
duk_v1_compat.c migrate to go 1.12 and go modules 2019-06-12 13:12:00 +02:00
duk_v1_compat.h migrate to go 1.12 and go modules 2019-06-12 13:12:00 +02:00
duktape.c migrate to go 1.12 and go modules 2019-06-12 13:12:00 +02:00
duktape.go Update to go-ethereum 1.8.1 (#702) 2018-02-27 11:39:30 +01:00
duktape.h migrate to go 1.12 and go modules 2019-06-12 13:12:00 +02:00
timers.go Update to go-ethereum 1.8.1 (#702) 2018-02-27 11:39:30 +01:00
utils.go Update to go-ethereum 1.8.1 (#702) 2018-02-27 11:39:30 +01:00
wercker.yml migrate to go 1.12 and go modules 2019-06-12 13:12:00 +02:00

README.md

Duktape bindings for Go(Golang)

wercker status Travis status Appveyor status Gitter

Duktape is a thin, embeddable javascript engine. Most of the api is implemented. The exceptions are listed here.

Usage

The package is fully go-getable, no need to install any external C libraries.
So, just type go get gopkg.in/olebedev/go-duktape.v3 to install.

package main

import "fmt"
import "gopkg.in/olebedev/go-duktape.v3"

func main() {
  ctx := duktape.New()
  ctx.PevalString(`2 + 3`)
  result := ctx.GetNumber(-1)
  ctx.Pop()
  fmt.Println("result is:", result)
  // To prevent memory leaks, don't forget to clean up after
  // yourself when you're done using a context.
  ctx.DestroyHeap()
}

Go specific notes

Bindings between Go and Javascript contexts are not fully functional. However, binding a Go function to the Javascript context is available:

package main

import "fmt"
import "gopkg.in/olebedev/go-duktape.v3"

func main() {
  ctx := duktape.New()
  ctx.PushGlobalGoFunction("log", func(c *duktape.Context) int {
    fmt.Println(c.SafeToString(-1))
    return 0
  })
  ctx.PevalString(`log('Go lang Go!')`)
}

then run it.

$ go run *.go
Go lang Go!
$

Timers

There is a method to inject timers to the global scope:

package main

import "fmt"
import "gopkg.in/olebedev/go-duktape.v3"

func main() {
  ctx := duktape.New()

  // Let's inject `setTimeout`, `setInterval`, `clearTimeout`,
  // `clearInterval` into global scope.
  ctx.PushTimers()

  ch := make(chan string)
  ctx.PushGlobalGoFunction("second", func(_ *Context) int {
    ch <- "second step"
    return 0
  })
  ctx.PevalString(`
    setTimeout(second, 0);
    print('first step');
  `)
  fmt.Println(<-ch)
}

then run it

$ go run *.go
first step
second step
$

Also you can FlushTimers().

Command line tool

Install go get gopkg.in/olebedev/go-duktape.v3/....
Execute file.js: $GOPATH/bin/go-duk file.js.

Benchmarks

prog time
otto 200.13s
anko 231.19s
agora 149.33s
GopherLua 8.39s
go-duktape 9.80s

More details are here.

Status

The package is not fully tested, so be careful.

Contribution

Pull requests are welcome! Also, if you want to discuss something send a pull request with proposal and changes. Convention: fork the repository and make changes on your fork in a feature branch.