diff options
Diffstat (limited to 'reflect.go')
| -rw-r--r-- | reflect.go | 17 |
1 files changed, 11 insertions, 6 deletions
@@ -13,9 +13,9 @@ import ( var textUnmarshalerType = reflect.TypeOf([]encoding.TextUnmarshaler{}).Elem() // cardinality tracks how many tokens are expected for a given spec -// - zero is a boolean, which does to expect any value -// - one is an ordinary option that will be parsed from a single token -// - multiple is a slice or map that can accept zero or more tokens +// - zero is a boolean, which does to expect any value +// - one is an ordinary option that will be parsed from a single token +// - multiple is a slice or map that can accept zero or more tokens type cardinality int const ( @@ -74,10 +74,10 @@ func cardinalityOf(t reflect.Type) (cardinality, error) { } } -// isBoolean returns true if the type can be parsed from a single string +// isBoolean returns true if the type is a boolean or a pointer to a boolean func isBoolean(t reflect.Type) bool { switch { - case t.Implements(textUnmarshalerType): + case isTextUnmarshaler(t): return false case t.Kind() == reflect.Bool: return true @@ -88,6 +88,11 @@ func isBoolean(t reflect.Type) bool { } } +// isTextUnmarshaler returns true if the type or its pointer implements encoding.TextUnmarshaler +func isTextUnmarshaler(t reflect.Type) bool { + return t.Implements(textUnmarshalerType) || reflect.PtrTo(t).Implements(textUnmarshalerType) +} + // isExported returns true if the struct field name is exported func isExported(field string) bool { r, _ := utf8.DecodeRuneInString(field) // returns RuneError for empty string or invalid UTF8 @@ -97,7 +102,7 @@ func isExported(field string) bool { // isZero returns true if v contains the zero value for its type func isZero(v reflect.Value) bool { t := v.Type() - if t.Kind() == reflect.Slice || t.Kind() == reflect.Map { + if t.Kind() == reflect.Pointer || t.Kind() == reflect.Slice || t.Kind() == reflect.Map || t.Kind() == reflect.Chan || t.Kind() == reflect.Interface { return v.IsNil() } if !t.Comparable() { |