Another lua binding for Go
Build and install
~~~~~~~~~~~~~~~~~~
# cd goinfi/lua
# go install
Test
~~~~~
# cd goinfi/lua
# go test
About API
~~~~~~~~~~
API of goinfi/lua is designed to very easy embedding lua script engine to Golang.
You are not necessarily to known what lua native c API is.
With goinfi/lua, we can export go function to lua like this:
// <go>
import "goinfi/lua"
func Host() string {
return "Golang"
}
func Add(a, b int) int {
return a + b
}
var vm lua.VM
func Init() {
vm = lua.NewVM()
vm.Openlibs()
vm.AddFunc("Host", Host)
vm.AddFunc("golang.Add", Add)
}
// </go>
And we can call lua script like this:
// <go>
vm.EvalString("print(Host())")
vm.EvalString("print(golang.Add(2, 3))")
// </go>
We can export go struct and it's method like this:
// <go>
type Point struct {
X int
Y int
}
func NewPoint(x, y int) *Point {
return &Point{x, y}
}
func (p *Point) SumXY() int {
return p.X + p.Y
}
type Rect struct {
P0 Point
P1 Point
}
func NewRect() *Rect {
return &Rect{}
}
func Init() {
vm = lua.NewVM()
vm.Openlibs()
vm.AddFunc("NewPoint", NewPoint)
vm.AddFunc("NewRect", NewRect)
vm.AddStructList(struct {
*Point
*Rect
}{})
}
// </go>
And we can call lua script like this:
// <go>
vm.EvalString("point = NewPoint(1,2); print(point.X, point.Y, point:SumXY())"
vm.EvalString("rect = NewRect(); print(rect.P0_X, point.P1_Y)"
// </go>
More demo code can be found in lua/lua_test.go and lua/exam/*.go.
Have Fun.