mod error;
mod key;
mod pair;
mod part;
mod value;
use std::{borrow::Cow, str};
use form_urlencoded::{Serializer as UrlEncodedSerializer, Target as UrlEncodedTarget};
use serde::ser;
pub use self::error::Error;
pub fn to_string<T: ser::Serialize>(input: T) -> Result<String, Error> {
let mut target = String::new();
push_to_string(&mut target, input)?;
Ok(target)
}
pub fn push_to_string<T: ser::Serialize>(target: &mut String, input: T) -> Result<(), Error> {
let start_position = target.len();
let mut urlencoder = UrlEncodedSerializer::for_suffix(target, start_position);
input.serialize(Serializer::new(&mut urlencoder))?;
urlencoder.finish();
Ok(())
}
pub struct Serializer<'input, 'output, Target: UrlEncodedTarget> {
urlencoder: &'output mut UrlEncodedSerializer<'input, Target>,
}
impl<'input, 'output, Target: 'output + UrlEncodedTarget> Serializer<'input, 'output, Target> {
pub fn new(urlencoder: &'output mut UrlEncodedSerializer<'input, Target>) -> Self {
Serializer { urlencoder }
}
}
pub struct SeqSerializer<'input, 'output, Target: UrlEncodedTarget> {
urlencoder: &'output mut UrlEncodedSerializer<'input, Target>,
}
pub struct TupleSerializer<'input, 'output, Target: UrlEncodedTarget> {
urlencoder: &'output mut UrlEncodedSerializer<'input, Target>,
}
pub struct TupleStructSerializer<'input, 'output, T: UrlEncodedTarget> {
inner: ser::Impossible<&'output mut UrlEncodedSerializer<'input, T>, Error>,
}
pub struct TupleVariantSerializer<'input, 'output, T: UrlEncodedTarget> {
inner: ser::Impossible<&'output mut UrlEncodedSerializer<'input, T>, Error>,
}
pub struct MapSerializer<'input, 'output, Target: UrlEncodedTarget> {
urlencoder: &'output mut UrlEncodedSerializer<'input, Target>,
key: Option<Cow<'static, str>>,
}
pub struct StructSerializer<'input, 'output, Target: UrlEncodedTarget> {
urlencoder: &'output mut UrlEncodedSerializer<'input, Target>,
}
pub struct StructVariantSerializer<'input, 'output, T: UrlEncodedTarget> {
inner: ser::Impossible<&'output mut UrlEncodedSerializer<'input, T>, Error>,
}
impl<'input, 'output, Target> ser::Serializer for Serializer<'input, 'output, Target>
where
Target: 'output + UrlEncodedTarget,
{
type Ok = &'output mut UrlEncodedSerializer<'input, Target>;
type Error = Error;
type SerializeSeq = SeqSerializer<'input, 'output, Target>;
type SerializeTuple = TupleSerializer<'input, 'output, Target>;
type SerializeTupleStruct = TupleStructSerializer<'input, 'output, Target>;
type SerializeTupleVariant = TupleVariantSerializer<'input, 'output, Target>;
type SerializeMap = MapSerializer<'input, 'output, Target>;
type SerializeStruct = StructSerializer<'input, 'output, Target>;
type SerializeStructVariant = StructVariantSerializer<'input, 'output, Target>;
fn serialize_bool(self, _v: bool) -> Result<Self::Ok, Error> {
Err(Error::top_level())
}
fn serialize_i8(self, _v: i8) -> Result<Self::Ok, Error> {
Err(Error::top_level())
}
fn serialize_i16(self, _v: i16) -> Result<Self::Ok, Error> {
Err(Error::top_level())
}
fn serialize_i32(self, _v: i32) -> Result<Self::Ok, Error> {
Err(Error::top_level())
}
fn serialize_i64(self, _v: i64) -> Result<Self::Ok, Error> {
Err(Error::top_level())
}
fn serialize_u8(self, _v: u8) -> Result<Self::Ok, Error> {
Err(Error::top_level())
}
fn serialize_u16(self, _v: u16) -> Result<Self::Ok, Error> {
Err(Error::top_level())
}
fn serialize_u32(self, _v: u32) -> Result<Self::Ok, Error> {
Err(Error::top_level())
}
fn serialize_u64(self, _v: u64) -> Result<Self::Ok, Error> {
Err(Error::top_level())
}
fn serialize_f32(self, _v: f32) -> Result<Self::Ok, Error> {
Err(Error::top_level())
}
fn serialize_f64(self, _v: f64) -> Result<Self::Ok, Error> {
Err(Error::top_level())
}
fn serialize_char(self, _v: char) -> Result<Self::Ok, Error> {
Err(Error::top_level())
}
fn serialize_str(self, _value: &str) -> Result<Self::Ok, Error> {
Err(Error::top_level())
}
fn serialize_bytes(self, _value: &[u8]) -> Result<Self::Ok, Error> {
Err(Error::top_level())
}
fn serialize_unit(self) -> Result<Self::Ok, Error> {
Ok(self.urlencoder)
}
fn serialize_unit_struct(self, _name: &'static str) -> Result<Self::Ok, Error> {
Ok(self.urlencoder)
}
fn serialize_unit_variant(
self,
_name: &'static str,
_variant_index: u32,
_variant: &'static str,
) -> Result<Self::Ok, Error> {
Err(Error::top_level())
}
fn serialize_newtype_struct<T: ?Sized + ser::Serialize>(
self,
_name: &'static str,
value: &T,
) -> Result<Self::Ok, Error> {
value.serialize(self)
}
fn serialize_newtype_variant<T: ?Sized + ser::Serialize>(
self,
_name: &'static str,
_variant_index: u32,
_variant: &'static str,
_value: &T,
) -> Result<Self::Ok, Error> {
Err(Error::top_level())
}
fn serialize_none(self) -> Result<Self::Ok, Error> {
Ok(self.urlencoder)
}
fn serialize_some<T: ?Sized + ser::Serialize>(self, value: &T) -> Result<Self::Ok, Error> {
value.serialize(self)
}
fn serialize_seq(self, _len: Option<usize>) -> Result<Self::SerializeSeq, Error> {
Ok(SeqSerializer { urlencoder: self.urlencoder })
}
fn serialize_tuple(self, _len: usize) -> Result<Self::SerializeTuple, Error> {
Ok(TupleSerializer { urlencoder: self.urlencoder })
}
fn serialize_tuple_struct(
self,
_name: &'static str,
_len: usize,
) -> Result<Self::SerializeTupleStruct, Error> {
Err(Error::top_level())
}
fn serialize_tuple_variant(
self,
_name: &'static str,
_variant_index: u32,
_variant: &'static str,
_len: usize,
) -> Result<Self::SerializeTupleVariant, Error> {
Err(Error::top_level())
}
fn serialize_map(self, _len: Option<usize>) -> Result<Self::SerializeMap, Error> {
Ok(MapSerializer { urlencoder: self.urlencoder, key: None })
}
fn serialize_struct(
self,
_name: &'static str,
_len: usize,
) -> Result<Self::SerializeStruct, Error> {
Ok(StructSerializer { urlencoder: self.urlencoder })
}
fn serialize_struct_variant(
self,
_name: &'static str,
_variant_index: u32,
_variant: &'static str,
_len: usize,
) -> Result<Self::SerializeStructVariant, Error> {
Err(Error::top_level())
}
}
impl<'input, 'output, Target> ser::SerializeSeq for SeqSerializer<'input, 'output, Target>
where
Target: 'output + UrlEncodedTarget,
{
type Ok = &'output mut UrlEncodedSerializer<'input, Target>;
type Error = Error;
fn serialize_element<T: ?Sized + ser::Serialize>(&mut self, value: &T) -> Result<(), Error> {
value.serialize(pair::PairSerializer::new(self.urlencoder))
}
fn end(self) -> Result<Self::Ok, Error> {
Ok(self.urlencoder)
}
}
impl<'input, 'output, Target> ser::SerializeTuple for TupleSerializer<'input, 'output, Target>
where
Target: 'output + UrlEncodedTarget,
{
type Ok = &'output mut UrlEncodedSerializer<'input, Target>;
type Error = Error;
fn serialize_element<T: ?Sized + ser::Serialize>(&mut self, value: &T) -> Result<(), Error> {
value.serialize(pair::PairSerializer::new(self.urlencoder))
}
fn end(self) -> Result<Self::Ok, Error> {
Ok(self.urlencoder)
}
}
impl<'input, 'output, Target> ser::SerializeTupleStruct
for TupleStructSerializer<'input, 'output, Target>
where
Target: 'output + UrlEncodedTarget,
{
type Ok = &'output mut UrlEncodedSerializer<'input, Target>;
type Error = Error;
fn serialize_field<T: ?Sized + ser::Serialize>(&mut self, value: &T) -> Result<(), Error> {
self.inner.serialize_field(value)
}
fn end(self) -> Result<Self::Ok, Error> {
self.inner.end()
}
}
impl<'input, 'output, Target> ser::SerializeTupleVariant
for TupleVariantSerializer<'input, 'output, Target>
where
Target: 'output + UrlEncodedTarget,
{
type Ok = &'output mut UrlEncodedSerializer<'input, Target>;
type Error = Error;
fn serialize_field<T: ?Sized + ser::Serialize>(&mut self, value: &T) -> Result<(), Error> {
self.inner.serialize_field(value)
}
fn end(self) -> Result<Self::Ok, Error> {
self.inner.end()
}
}
impl<'input, 'output, Target> ser::SerializeMap for MapSerializer<'input, 'output, Target>
where
Target: 'output + UrlEncodedTarget,
{
type Ok = &'output mut UrlEncodedSerializer<'input, Target>;
type Error = Error;
fn serialize_entry<K: ?Sized + ser::Serialize, V: ?Sized + ser::Serialize>(
&mut self,
key: &K,
value: &V,
) -> Result<(), Error> {
let key_sink = key::KeySink::new(|key| {
let value_sink = value::ValueSink::new(self.urlencoder, &key);
value.serialize(part::PartSerializer::new(value_sink))?;
self.key = None;
Ok(())
});
let entry_serializer = part::PartSerializer::new(key_sink);
key.serialize(entry_serializer)
}
fn serialize_key<T: ?Sized + ser::Serialize>(&mut self, key: &T) -> Result<(), Error> {
let key_sink = key::KeySink::new(|key| Ok(key.into()));
let key_serializer = part::PartSerializer::new(key_sink);
self.key = Some(key.serialize(key_serializer)?);
Ok(())
}
fn serialize_value<T: ?Sized + ser::Serialize>(&mut self, value: &T) -> Result<(), Error> {
{
let key = self.key.as_ref().ok_or_else(Error::no_key)?;
let value_sink = value::ValueSink::new(self.urlencoder, key);
value.serialize(part::PartSerializer::new(value_sink))?;
}
self.key = None;
Ok(())
}
fn end(self) -> Result<Self::Ok, Error> {
Ok(self.urlencoder)
}
}
impl<'input, 'output, Target> ser::SerializeStruct for StructSerializer<'input, 'output, Target>
where
Target: 'output + UrlEncodedTarget,
{
type Ok = &'output mut UrlEncodedSerializer<'input, Target>;
type Error = Error;
fn serialize_field<T: ?Sized + ser::Serialize>(
&mut self,
key: &'static str,
value: &T,
) -> Result<(), Error> {
let value_sink = value::ValueSink::new(self.urlencoder, key);
value.serialize(part::PartSerializer::new(value_sink))
}
fn end(self) -> Result<Self::Ok, Error> {
Ok(self.urlencoder)
}
}
impl<'input, 'output, Target> ser::SerializeStructVariant
for StructVariantSerializer<'input, 'output, Target>
where
Target: 'output + UrlEncodedTarget,
{
type Ok = &'output mut UrlEncodedSerializer<'input, Target>;
type Error = Error;
fn serialize_field<T: ?Sized + ser::Serialize>(
&mut self,
key: &'static str,
value: &T,
) -> Result<(), Error> {
self.inner.serialize_field(key, value)
}
fn end(self) -> Result<Self::Ok, Error> {
self.inner.end()
}
}
#[cfg(test)]
mod tests;