registry

type CallCtx interface {
	LookUp(...string) (interface{}, error)
	IO() util.IOStreams
}

type Meta struct {
	Context context.Context
	Stdin   io.Reader
	Stdout  io.Writer
	Stderr  io.Writer
	Obj     cue.Value
	Err     error
}

type Runner interface {

	// Runner runs given the current value and returns a new value which is to
	// be unified with the original result.
	Run(meta *Meta) (results interface{}, err error)
}

type RunnerFunc func(v cue.Value) (Runner, error)

type Task func(ctx CallCtx, params interface{}) error