package influxql

{{range .}}

// {{.Name}}PointAggregator aggregates points to produce a single point.
type {{.Name}}PointAggregator interface {
	Aggregate(p *{{.Name}}Point)
}

// {{.Name}}PointEmitter produces a single point from an aggregate.
type {{.Name}}PointEmitter interface {
	Emit() *{{.Name}}Point
}

// {{.Name}}ReduceFunc is the function called by a {{.Name}}Point reducer.
type {{.Name}}ReduceFunc func(prev, curr *{{.Name}}Point) (t int64, v {{.Type}}, aux []interface{})

type {{.Name}}FuncReducer struct {
	prev *{{.Name}}Point
	fn   {{.Name}}ReduceFunc
}

func New{{.Name}}FuncReducer(fn {{.Name}}ReduceFunc) *{{.Name}}FuncReducer {
	return &{{.Name}}FuncReducer{fn: fn}
}

func (r *{{.Name}}FuncReducer) Aggregate(p *{{.Name}}Point) {
	t, v, aux := r.fn(r.prev, p)
	if r.prev == nil {
		r.prev = &{{.Name}}Point{}
	}
  r.prev.Time = t
	r.prev.Value = v
	r.prev.Aux = aux
	r.prev.Aggregated++
}

func (r *{{.Name}}FuncReducer) Emit() *{{.Name}}Point {
	return r.prev
}
{{end}}