true bidirctional

simple/caller/main.go

@@ -7,12 +7,24 @@ import (
 	wasmgo "github.com/vedhavyas/wasm"
 )
 
+func proxy(b *wasmgo.Bridge) wasmgo.Func {
+	return func(args []interface{}) (i interface{}, e error) {
+		fmt.Println("In Go", args)
+		return b.CallFunc("addition", args)
+	}
+}
+
 func main() {
 	b, err := wasmgo.BridgeFromFile("test", "./simple/prog/main.wasm", nil)
 	if err != nil {
 		log.Fatal(err)
 	}
 
+	err = b.SetFunc("proxy", proxy(b))
+	if err != nil {
+		panic(err)
+	}
+
 	init, done := make(chan error), make(chan bool)
 	go b.Run(init, done)
 	err = <-init
@@ -20,8 +32,6 @@ func main() {
 		panic(err)
 	}
 
-	res, err := b.CallFunc("printWasm", &[]interface{}{"Hello from Go"})
-	fmt.Println(res, err)
 	<-done
 	fmt.Println("wasm exited", err)
 }

simple/prog/main.go

@@ -8,17 +8,22 @@ import (
 )
 
 // TODO: log seems to cause an issue
-func printWasm(this js.Value, v []js.Value) interface{} {
-	fmt.Println(v[0].String())
-	return "Hello from WASM"
+func addition(this js.Value, args []js.Value) interface{} {
+	fmt.Println("In WASM", args)
+	this.Set()
+	this.SetIndex()
+	a, b := args[0].Int(), args[1].Int()
+	return a + b
 }
 
 func main() {
 	ch := make(chan bool)
-	fmt.Println("WASM-Go Initialized")
 
 	// register functions
-	fun := js.FuncOf(printWasm)
-	js.Global().Set("printWasm", fun)
+	fun := js.FuncOf(addition)
+	js.Global().Set("addition", fun)
+
+	res := js.Global().Get("proxy").Invoke(1, 2)
+	fmt.Printf("1 + 2 = %d\n", res.Int())
 	<-ch
 }