(name string, dataVal reflect.Value, val reflect.Value, valMap reflect.Value)
| 906 | } |
| 907 | |
| 908 | func (d *Decoder) decodeMapFromStruct(name string, dataVal reflect.Value, val reflect.Value, valMap reflect.Value) error { |
| 909 | typ := dataVal.Type() |
| 910 | for i := 0; i < typ.NumField(); i++ { |
| 911 | // Get the StructField first since this is a cheap operation. If the |
| 912 | // field is unexported, then ignore it. |
| 913 | f := typ.Field(i) |
| 914 | if f.PkgPath != "" { |
| 915 | continue |
| 916 | } |
| 917 | |
| 918 | // Next get the actual value of this field and verify it is assignable |
| 919 | // to the map value. |
| 920 | v := dataVal.Field(i) |
| 921 | if !v.Type().AssignableTo(valMap.Type().Elem()) { |
| 922 | return fmt.Errorf("cannot assign type '%s' to map value field of type '%s'", v.Type(), valMap.Type().Elem()) |
| 923 | } |
| 924 | |
| 925 | tagValue := f.Tag.Get(d.config.TagName) |
| 926 | keyName := f.Name |
| 927 | |
| 928 | if tagValue == "" && d.config.IgnoreUntaggedFields { |
| 929 | continue |
| 930 | } |
| 931 | |
| 932 | // If Squash is set in the config, we squash the field down. |
| 933 | squash := d.config.Squash && v.Kind() == reflect.Struct && f.Anonymous |
| 934 | |
| 935 | v = dereferencePtrToStructIfNeeded(v, d.config.TagName) |
| 936 | |
| 937 | // Determine the name of the key in the map |
| 938 | if index := strings.Index(tagValue, ","); index != -1 { |
| 939 | if tagValue[:index] == "-" { |
| 940 | continue |
| 941 | } |
| 942 | // If "omitempty" is specified in the tag, it ignores empty values. |
| 943 | if strings.Index(tagValue[index+1:], "omitempty") != -1 && isEmptyValue(v) { |
| 944 | continue |
| 945 | } |
| 946 | |
| 947 | // If "squash" is specified in the tag, we squash the field down. |
| 948 | squash = squash || strings.Index(tagValue[index+1:], "squash") != -1 |
| 949 | if squash { |
| 950 | // When squashing, the embedded type can be a pointer to a struct. |
| 951 | if v.Kind() == reflect.Ptr && v.Elem().Kind() == reflect.Struct { |
| 952 | v = v.Elem() |
| 953 | } |
| 954 | |
| 955 | // The final type must be a struct |
| 956 | if v.Kind() != reflect.Struct { |
| 957 | return fmt.Errorf("cannot squash non-struct type '%s'", v.Type()) |
| 958 | } |
| 959 | } |
| 960 | if keyNameTagValue := tagValue[:index]; keyNameTagValue != "" { |
| 961 | keyName = keyNameTagValue |
| 962 | } |
| 963 | } else if len(tagValue) > 0 { |
| 964 | if tagValue == "-" { |
| 965 | continue |
no test coverage detected