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use ser::Error;
use ser::part::{PartSerializer, Sink};
use serde::ser::{Serialize, SerializeSeq, SerializeStruct};
use std::str;
use url::form_urlencoded::Serializer as UrlEncodedSerializer;
use url::form_urlencoded::Target as UrlEncodedTarget;
pub struct ValueSink<'key, 'target, Target>
where Target: 'target + UrlEncodedTarget,
{
urlencoder: &'target mut UrlEncodedSerializer<Target>,
key: &'key str,
idx: usize,
}
impl<'key, 'target, Target> ValueSink<'key, 'target, Target>
where Target: 'target + UrlEncodedTarget,
{
pub fn new(urlencoder: &'target mut UrlEncodedSerializer<Target>,
key: &'key str)
-> Self {
ValueSink {
urlencoder: urlencoder,
key: key,
idx: 0,
}
}
}
impl<'key, 'target, Target> Sink<(), Error> for ValueSink<'key, 'target, Target>
where Target: 'target + UrlEncodedTarget,
{
// type Ok = ();
fn serialize_str(self, value: &str) -> Result<(), Error> {
self.urlencoder.append_pair(self.key, value);
Ok(())
}
fn serialize_static_str(self, value: &'static str) -> Result<(), Error> {
self.serialize_str(value)
}
fn serialize_string(self, value: String) -> Result<(), Error> {
self.serialize_str(&value)
}
fn serialize_none(self) -> Result<(), Error> {
Ok(())
}
fn serialize_some<T: ?Sized + Serialize>(self,
value: &T)
-> Result<(), Error> {
value.serialize(PartSerializer::new(self))
}
fn unsupported(&self) -> Error {
Error::Custom("unsupported value".into())
}
}
impl<'key, 'target, Target> SerializeStruct for ValueSink<'key, 'target, Target>
where Target: 'target + UrlEncodedTarget,
{
type Ok = ();
type Error = Error;
fn serialize_field<T: ?Sized + Serialize>(&mut self,
key: &'static str,
value: &T)
-> Result<(), Error> {
let newk = format!("{}[{}]", self.key, key);
let value_sink = ValueSink::new(self.urlencoder, &newk);
value.serialize(super::part::PartSerializer::new(value_sink))
}
fn end(self) -> Result<Self::Ok, Error> {
Ok(())
}
}
impl<'key, 'target, Target> SerializeSeq for ValueSink<'key, 'target, Target>
where Target: 'target + UrlEncodedTarget,
{
type Ok = ();
type Error = Error;
fn serialize_element<T: ?Sized + Serialize>(&mut self,
value: &T)
-> Result<(), Error> {
let newk = format!("{}[{}]", self.key, self.idx);
self.idx += 1;
let value_sink = ValueSink::new(self.urlencoder, &newk);
value.serialize(super::part::PartSerializer::new(value_sink))
}
fn end(self) -> Result<Self::Ok, Error> {
Ok(())
}
}
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