forked from mongodb/mongo-tools
/
iso_date.go
51 lines (45 loc) · 1.29 KB
/
iso_date.go
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// Copyright (C) MongoDB, Inc. 2014-present.
//
// Licensed under the Apache License, Version 2.0 (the "License"); you may
// not use this file except in compliance with the License. You may obtain
// a copy of the License at http://www.apache.org/licenses/LICENSE-2.0
package json
import (
"fmt"
"reflect"
)
// Transition functions for recognizing ISODate.
// Adapted from encoding/json/scanner.go.
// stateIS is the state after reading `IS`.
func stateIS(s *scanner, c int) int {
if c == 'O' {
s.step = stateISO
return scanContinue
}
return s.error(c, "in literal ISODate (expecting 'O')")
}
// stateISO is the state after reading `ISO`.
func stateISO(s *scanner, c int) int {
if c == 'D' {
s.step = stateD
return scanContinue
}
return s.error(c, "in literal ISODate (expecting 'D')")
}
// Decodes a ISODate literal stored in the underlying byte data into v.
func (d *decodeState) storeISODate(v reflect.Value) {
op := d.scanWhile(scanSkipSpace)
if op != scanBeginCtor {
d.error(fmt.Errorf("expected beginning of constructor"))
}
args, err := d.ctor("ISODate", []reflect.Type{isoDateType})
if err != nil {
d.error(err)
}
switch kind := v.Kind(); kind {
case reflect.Interface:
v.Set(args[0])
default:
d.error(fmt.Errorf("cannot store %v value into %v type", isoDateType, kind))
}
}