Method NewFunction

context.go:704–719

NewFunction returns a js function value with given function template New implementation using HandleStore and JS_NewCFunction2 with magic parameter

(fn func(*Context, *Value, []*Value) *Value)

// NewFunction returns a js function value with given function template
// New implementation using HandleStore and JS_NewCFunction2 with magic parameter
func (ctx *Context) NewFunction(fn func(*Context, *Value, []*Value) *Value) *Value {
	// Store function in HandleStore and get int32 ID
	fnID := ctx.handleStore.Store(fn)

	return &Value{
		ctx: ctx,
		ref: C.JS_NewCFunction2(
			ctx.ref,
			(*C.JSCFunction)(unsafe.Pointer(C.GoFunctionProxy)),
			nil,                      // name (can be set later)
			0,                        // length (auto-detected)
			C.JS_CFUNC_generic_magic, // enable magic parameter support
			C.int(fnID),              // magic parameter passes function ID
		),
	}
}

// Function returns a js function value with given function template
// New implementation using HandleStore and JS_NewCFunction2 with magic parameter