Struct EmptyAsNone

pub struct EmptyAsNone;

Text codec which returns None if the input to decode is the empty string, instead of attempting to decode it.

Particularly useful when parsing Option<T> on #[xml(text)], which does not support Option<_> otherwise.

Trait Implementations

impl<T> TextCodec<Option<T>> for EmptyAsNone

where T: FromXmlText + AsXmlText,

fn decode(&self, s: String) -> Result<Option<T>, Error>

Decode a string value into the type.

fn encode<'x>( &self, value: &'x Option<T>, ) -> Result<Option<Cow<'x, str>>, Error>

Encode the type as string value.

fn filtered<F: TextFilter>(self, filter: F) -> Filtered<F, Self, T>

where Self: Sized,

Apply a filter to this codec.