elct9620/mruby-go

package mruby

func initArray(mrb *State) (err error) {
    mrb.ArrayClass, err = mrb.DefineClassId(_ArrayClass(mrb), mrb.ObjectClass)
    if err != nil {
        return err
    }

    mrb.DefineMethodId(mrb.ArrayClass, _join(mrb), arrayJoin)

    return nil
}

func arrayJoin(mrb *State, self Value) Value {
    argv := mrb.GetArgv()

    elem, ok := self.([]Value)
    if !ok {
        return nil
    }

    ret := ""
    elemLen := len(elem)
    for i, v := range elem {
        v, ok := v.(string)
        if !ok {
            continue
        }

        ret += v
        hasNext := elemLen > i+1
        if hasNext {
            ret += argv[0].(string)
        }
    }

    return ret
}