init

README.md

@@ -1,2 +1,31 @@
 # gode
-A test project to implement a Node like javascript environment based on Golang
+
+A test project to implement a Node like javascript environment based on goja
+
+# Example
+
+```golang
+package main
+
+import (
+	"fmt"
+
+	"github.com/81120/gode/core"
+)
+
+func main() {
+	gode := core.New()
+	gode.RegisterBuildInModule()
+
+	r := gode.GetRts()
+	v, err := r.RunString(`
+		var t = require('./test.js');
+		t.test();
+	`)
+	if err != nil {
+		fmt.Print(err)
+	} else {
+		fmt.Println(v)
+	}
+}
+```

core/console.go

@@ -0,0 +1,21 @@
+package core
+
+import (
+	"fmt"
+
+	js "github.com/dop251/goja"
+)
+
+func log(call js.FunctionCall) js.Value {
+	str := call.Argument(0)
+	fmt.Print(str.String())
+	return str
+}
+
+// RegisterConsole register a console.log to runtime
+func RegisterConsole(c *Core) {
+	r := c.GetRts()
+	o := r.NewObject()
+	o.Set("log", log)
+	r.Set("console", o)
+}

core/event-loop.go

@@ -0,0 +1 @@
+package core

core/loader.go

@@ -0,0 +1,52 @@
+package core
+
+import (
+	"io/ioutil"
+	"path/filepath"
+
+	js "github.com/dop251/goja"
+)
+
+func moduleTemplate(c string) string {
+	return "(function(module, exports) {" + c + "\n})"
+}
+
+func createModule(c *Core) *js.Object {
+	r := c.GetRts()
+	m := r.NewObject()
+	e := r.NewObject()
+	m.Set("exports", e)
+
+	return m
+}
+
+func loadModule(c *Core, p string) *js.Program {
+	p = filepath.Clean(p)
+	pkg := c.Pkg[p]
+	if pkg == nil {
+		code, _ := ioutil.ReadFile(p)
+		text := moduleTemplate(string(code))
+		pkg, _ = js.Compile(p, text, false)
+		c.Pkg[p] = pkg
+	}
+	return pkg
+}
+
+// RegisterLoader register a simple commonjs style loader to runtime
+func RegisterLoader(c *Core) {
+	r := c.GetRts()
+
+	r.Set("require", func(call js.FunctionCall) js.Value {
+		p := call.Argument(0).String()
+		prg := loadModule(c, p)
+
+		f, _ := r.RunProgram(prg)
+		g, _ := js.AssertFunction(f)
+
+		m := createModule(c)
+		jsExports := m.Get("exports")
+		g(jsExports, m, jsExports)
+
+		return m.Get("exports")
+	})
+}

core/rts.go

@@ -0,0 +1,33 @@
+package core
+
+import (
+	js "github.com/dop251/goja"
+)
+
+// Core is the basic struct of gode
+type Core struct {
+	Rts *js.Runtime
+	Pkg map[string]*js.Program
+}
+
+// New create a *Core
+func New() *Core {
+	vm := js.New()
+	pkg := make(map[string]*js.Program)
+
+	return &Core{
+		Rts: vm,
+		Pkg: pkg,
+	}
+}
+
+// GetRts get the object of javascript runtime
+func (c *Core) GetRts() *js.Runtime {
+	return c.Rts
+}
+
+// RegisterBuildInModule register some build in modules to the runtime
+func (c *Core) RegisterBuildInModule() {
+	RegisterConsole(c)
+	RegisterLoader(c)
+}

go.mod

@@ -0,0 +1,10 @@
+module github.com/81120/gode
+
+go 1.13
+
+require (
+	github.com/dlclark/regexp2 v1.2.0 // indirect
+	github.com/dop251/goja v0.0.0-20190912223329-aa89e6a4c733
+	github.com/go-sourcemap/sourcemap v2.1.2+incompatible // indirect
+	golang.org/x/text v0.3.2 // indirect
+)

go.sum

@@ -0,0 +1,9 @@
+github.com/dlclark/regexp2 v1.2.0 h1:8sAhBGEM0dRWogWqWyQeIJnxjWO6oIjl8FKqREDsGfk=
+github.com/dlclark/regexp2 v1.2.0/go.mod h1:2pZnwuY/m+8K6iRw6wQdMtk+rH5tNGR1i55kozfMjCc=
+github.com/dop251/goja v0.0.0-20190912223329-aa89e6a4c733 h1:cyNc40Dx5YNEO94idePU8rhVd3dn+sd04Arh0kDBAaw=
+github.com/dop251/goja v0.0.0-20190912223329-aa89e6a4c733/go.mod h1:Mw6PkjjMXWbTj+nnj4s3QPXq1jaT0s5pC0iFD4+BOAA=
+github.com/go-sourcemap/sourcemap v2.1.2+incompatible h1:0b/xya7BKGhXuqFESKM4oIiRo9WOt2ebz7KxfreD6ug=
+github.com/go-sourcemap/sourcemap v2.1.2+incompatible/go.mod h1:F8jJfvm2KbVjc5NqelyYJmf/v5J0dwNLS2mL4sNA1Jg=
+golang.org/x/text v0.3.2 h1:tW2bmiBqwgJj/UpqtC8EpXEZVYOwU0yG4iWbprSVAcs=
+golang.org/x/text v0.3.2/go.mod h1:bEr9sfX3Q8Zfm5fL9x+3itogRgK3+ptLWKqgva+5dAk=
+golang.org/x/tools v0.0.0-20180917221912-90fa682c2a6e/go.mod h1:n7NCudcB/nEzxVGmLbDWY5pfWTLqBcC2KZ6jyYvM4mQ=

main.go

@@ -0,0 +1,23 @@
+package main
+
+import (
+	"fmt"
+
+	"github.com/81120/gode/core"
+)
+
+func main() {
+	gode := core.New()
+	gode.RegisterBuildInModule()
+
+	r := gode.GetRts()
+	v, err := r.RunString(`
+		var t = require('./test.js');
+		t.test();
+	`)
+	if err != nil {
+		fmt.Print(err)
+	} else {
+		fmt.Println(v)
+	}
+}

test.js

@@ -0,0 +1,8 @@
+function test() {
+  console.log('hello world\n');
+  return 'Hello Golang~';
+}
+
+module.exports = {
+  test: test,
+};