mox/vendor/github.com/mjl-/sherpa/intstr.go
Mechiel Lukkien cb229cb6cf
mox!
2023-01-30 14:27:06 +01:00

87 lines
2.1 KiB
Go

package sherpa
import (
"encoding/json"
"fmt"
"strconv"
)
// Int64s is an int64 that can be read as either a JSON string or JSON number, to
// be used in sherpa function parameters for compatibility with JavaScript.
// For struct fields, use the "json:,string" struct tag instead.
type Int64s int64
// Int returns the int64 value.
func (i Int64s) Int() int64 {
return int64(i)
}
// MarshalJSON returns a JSON-string-encoding of the int64.
func (i *Int64s) MarshalJSON() ([]byte, error) {
var v int64
if i != nil {
v = int64(*i)
}
return json.Marshal(fmt.Sprintf("%d", v))
}
// UnmarshalJSON parses JSON into the int64. Both a string encoding as a number
// encoding are allowed. JavaScript clients must use the string encoding because
// the number encoding loses precision at 1<<53.
func (i *Int64s) UnmarshalJSON(buf []byte) error {
var s string
if len(buf) > 0 && buf[0] == '"' {
err := json.Unmarshal(buf, &s)
if err != nil {
return err
}
} else {
s = string(buf)
}
vv, err := strconv.ParseInt(s, 10, 64)
if err != nil {
return err
}
*i = Int64s(vv)
return nil
}
// Uint64s is an uint64 that can be read as either a JSON string or JSON number, to
// be used in sherpa function parameters for compatibility with JavaScript.
// For struct fields, use the "json:,string" struct tag instead.
type Uint64s uint64
// Int returns the uint64 value.
func (i Uint64s) Int() uint64 {
return uint64(i)
}
// MarshalJSON returns a JSON-string-encoding of the uint64.
func (i *Uint64s) MarshalJSON() ([]byte, error) {
var v uint64
if i != nil {
v = uint64(*i)
}
return json.Marshal(fmt.Sprintf("%d", v))
}
// UnmarshalJSON parses JSON into the uint64. Both a string encoding as a number
// encoding are allowed. JavaScript clients must use the string encoding because
// the number encoding loses precision at 1<<53.
func (i *Uint64s) UnmarshalJSON(buf []byte) error {
var s string
if len(buf) > 0 && buf[0] == '"' {
err := json.Unmarshal(buf, &s)
if err != nil {
return err
}
} else {
s = string(buf)
}
vv, err := strconv.ParseInt(s, 10, 64)
if err != nil {
return err
}
*i = Uint64s(vv)
return nil
}