forked from go-gota/gota
/
type-time.go
163 lines (139 loc) · 2.63 KB
/
type-time.go
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package series
import (
"fmt"
"math"
"time"
)
type timeElement struct {
e *time.Time
dtParser DatetimeParserFn
}
func (e timeElement) Addr() string {
return fmt.Sprint(e.e)
}
func (e timeElement) Set(value interface{}) Element {
var val time.Time
var err error
switch value.(type) {
case string:
if value.(string) == "NaN" {
e.e = nil
return e
}
val, err = e.dtParser(value.(string))
if err != nil {
e.e = nil
return e
}
case float64:
val = time.Unix(0, int64(value.(float64)))
case int:
val = time.Unix(0, int64(value.(int)))
case int64:
val = time.Unix(0, value.(int64))
case time.Time:
val = value.(time.Time)
case Element:
val, err = value.(Element).Time()
if err != nil {
e.e = nil
return e
}
default:
e.e = nil
return e
}
e.e = &val
return e
}
func (e timeElement) Type() Type {
return Time
}
func (e timeElement) IsNA() bool {
if e.e == nil {
return true
}
return false
}
func (e timeElement) Val() ElementValue {
if e.IsNA() {
return nil
}
return time.Time(*e.e)
}
func (e timeElement) Copy() Element {
if e.e == nil {
return timeElement{nil, nil}
}
copy := time.Time(*e.e)
return timeElement{©, e.dtParser}
}
func (e timeElement) Bool() (bool, error) {
return !e.IsNA(), nil
}
func (e timeElement) Int() (int, error) {
if e.IsNA() {
return 0, fmt.Errorf("can't convert NaN to int")
}
return int(e.e.UnixNano()), nil
}
func (e timeElement) Float() float64 {
if e.e == nil {
return math.NaN()
}
return float64(e.e.UnixNano())
}
func (e timeElement) String() string {
if e.e == nil {
return "NaN"
}
return time.Time(*e.e).String()
}
func (e timeElement) Time() (time.Time, error) {
if e.IsNA() {
return time.Time{}, fmt.Errorf("value is NaN")
}
return *e.e, nil
}
func (e timeElement) Eq(elem Element) bool {
t, err := elem.Time()
if e.IsNA() || err != nil {
return false
}
return e.e.Equal(t)
}
func (e timeElement) Neq(elem Element) bool {
t, err := elem.Time()
if e.IsNA() || err != nil {
return false
}
return !e.e.Equal(t)
}
func (e timeElement) Less(elem Element) bool {
t, err := elem.Time()
if e.IsNA() || err != nil {
return false
}
return (*e.e).Before(t)
}
func (e timeElement) LessEq(elem Element) bool {
t, err := elem.Time()
if e.IsNA() || err != nil {
return false
}
return (*e.e).Before(t) || e.Eq(elem)
}
func (e timeElement) Greater(elem Element) bool {
t, err := elem.Time()
if e.IsNA() || err != nil {
return false
}
return (*e.e).After(t)
}
func (e timeElement) GreaterEq(elem Element) bool {
t, err := elem.Time()
if e.IsNA() || err != nil {
return false
}
return (*e.e).After(t) || e.Eq(elem)
}