elct9620/mruby-go

package mruby

import "fmt"

func (mrb *State) Inspect(obj Value) string {
    ret, ok := objectInspect(mrb, obj).(string)
    if !ok {
        return ""
    }

    return ret
}

func objectInspect(mrb *State, self Value) Value {
    switch v := self.(type) {
    case *Object:
        name := mrb.ObjectInstanceVariableGet(v.Class(), _classname(mrb))
        return name
    case RClass:
        name := mrb.ObjectInstanceVariableGet(v, _classname(mrb))
        return name
    case string:
        return fmt.Sprintf("%q", v)
    case int, int8, int16, int32, int64, uint, uint8, uint16, uint32, uint64:
        return fmt.Sprintf("%d", v)
    default:
        return nil
    }
}

func objectPuts(mrb *State, recv Value) Value {
    args := mrb.GetArgv()
    fmt.Println(args...)
    return args[0]
}

func funcRaise(mrb *State, recv Value) Value {
    args := mrb.GetArgv()
    mrb.Raise(nil, fmt.Sprint(args...))

    return nil
}

func initKernel(mrb *State) (err error) {
    mrb.KernelModule = mrb.DefineModuleId(_Kernel(mrb))

    mrb.DefineMethodId(mrb.KernelModule, _inspect(mrb), objectInspect)
    mrb.DefineMethodId(mrb.ObjectClass, _raise(mrb), funcRaise)

    // defined in mruby-io
    putsSym := mrb.Intern("puts")
    mrb.DefineMethodId(mrb.ObjectClass, putsSym, objectPuts)

    return mrb.IncludeModule(mrb.ObjectClass, mrb.KernelModule)
}