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map.go
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map.go
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package convert
import (
"reflect"
)
func (stdRecipes) nilToMap(Converter, NilValue, MapValue) error {
return nil
}
func (stdRecipes) mapToMap(c Converter, in MapValue, out MapValue) error {
keyType := out.Elem().Type().Key()
valueType := out.Elem().Type().Elem()
m := reflect.MakeMapWithSize(reflect.MapOf(keyType, valueType), in.Len())
for _, key := range in.MapKeys() {
keyValue := reflect.New(keyType)
if err := c.ConvertReflectValue(key, keyValue); err != nil {
return err
}
var valueValue reflect.Value
// lookup key in dst
existingValue := out.Elem().MapIndex(keyValue.Elem())
if existingValue.IsValid() {
valueValue = reflect.New(existingValue.Type())
valueValue.Elem().Set(existingValue)
} else {
valueValue = reflect.New(valueType)
}
if err := c.ConvertReflectValue(in.MapIndex(key), valueValue); err != nil {
return err
}
m.SetMapIndex(keyValue.Elem(), valueValue.Elem())
}
out.Elem().Set(m)
return nil
}
func (stdRecipes) structToMap(c Converter, in StructValue, out MapValue) error {
keyType := out.Elem().Type().Key()
valueType := out.Elem().Type().Elem()
m := reflect.MakeMapWithSize(reflect.MapOf(keyType, valueType), in.NumField())
for i := in.NumField() - 1; i >= 0; i-- {
field := reflect.ValueOf(in.Type().Field(i).Name)
var valueValue reflect.Value
// lookup key in dst
existingValue := out.Elem().MapIndex(field)
if existingValue.IsValid() {
valueValue = reflect.New(existingValue.Type())
valueValue.Elem().Set(existingValue)
} else {
valueValue = reflect.New(valueType)
}
if err := c.ConvertReflectValue(in.Field(i), valueValue); err != nil {
return err
}
m.SetMapIndex(field, valueValue.Elem())
}
out.Elem().Set(m)
return nil
}