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|
package extra
import (
"github.com/json-iterator/go"
"strings"
"unicode"
)
// SupportPrivateFields include private fields when encoding/decoding
func SupportPrivateFields() {
jsoniter.RegisterExtension(&privateFieldsExtension{})
}
type privateFieldsExtension struct {
jsoniter.DummyExtension
}
func (extension *privateFieldsExtension) UpdateStructDescriptor(structDescriptor *jsoniter.StructDescriptor) {
for _, binding := range structDescriptor.Fields {
isPrivate := unicode.IsLower(rune(binding.Field.Name()[0]))
if isPrivate {
tag, hastag := binding.Field.Tag().Lookup("json")
if !hastag {
binding.FromNames = []string{binding.Field.Name()}
binding.ToNames = []string{binding.Field.Name()}
continue
}
tagParts := strings.Split(tag, ",")
names := calcFieldNames(binding.Field.Name(), tagParts[0], tag)
binding.FromNames = names
binding.ToNames = names
}
}
}
func calcFieldNames(originalFieldName string, tagProvidedFieldName string, wholeTag string) []string {
// ignore?
if wholeTag == "-" {
return []string{}
}
// rename?
var fieldNames []string
if tagProvidedFieldName == "" {
fieldNames = []string{originalFieldName}
} else {
fieldNames = []string{tagProvidedFieldName}
}
// private?
isNotExported := unicode.IsLower(rune(originalFieldName[0]))
if isNotExported {
fieldNames = []string{}
}
return fieldNames
}
|
