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use soft_ascii_string::SoftAsciiChar;
use internals::error::EncodingError;
use internals::encoder::{EncodingWriter, EncodableInHeader};
use ::{HeaderTryFrom, HeaderTryInto};
use ::error::ComponentCreationError;
use super::Email;
#[derive(Debug, Clone, Hash, Eq, PartialEq)]
pub struct Path(pub Option<Email>);
impl HeaderTryFrom<Option<Email>> for Path {
fn try_from(opt_mail: Option<Email>) -> Result<Self, ComponentCreationError> {
Ok( Path( opt_mail ) )
}
}
impl<T> HeaderTryFrom<T> for Path
where T: HeaderTryInto<Email>
{
fn try_from(opt_mail: T) -> Result<Self, ComponentCreationError> {
Ok( Path( Some( opt_mail.try_into()? ) ) )
}
}
impl EncodableInHeader for Path {
fn encode(&self, handle: &mut EncodingWriter) -> Result<(), EncodingError> {
handle.mark_fws_pos();
handle.write_char(SoftAsciiChar::from_unchecked('<'))?;
if let Some( mail ) = self.0.as_ref() {
mail.encode( handle )?;
}
handle.write_char(SoftAsciiChar::from_unchecked('>'))?;
handle.mark_fws_pos();
Ok( () )
}
fn boxed_clone(&self) -> Box<EncodableInHeader> {
Box::new(self.clone())
}
}
#[cfg(test)]
mod test {
use super::*;
ec_test!{empty_path, {
Path( None )
} => ascii => [
MarkFWS,
Text "<>",
MarkFWS
]}
ec_test!{simple_path, {
Path( Some( Email::try_from( "abc@de.fg" )? ) )
} => ascii => [
MarkFWS,
Text "<",
MarkFWS,
Text "abc",
MarkFWS,
Text "@",
MarkFWS,
Text "de.fg",
MarkFWS,
Text ">",
MarkFWS
]}
}