use std::marker::PhantomData;
use serde::ser::{
self,
Serialize,
};
use error::Error;
use token::Token;
pub struct Serializer<'a, I>
where I: Iterator<Item=&'a Token<'a>>,
{
tokens: I,
phantom: PhantomData<&'a Token<'a>>,
}
impl<'a, I> Serializer<'a, I>
where I: Iterator<Item=&'a Token<'a>>,
{
pub fn new(tokens: I) -> Serializer<'a, I> {
Serializer {
tokens: tokens,
phantom: PhantomData,
}
}
pub fn next_token(&mut self) -> Option<&'a Token<'a>> {
self.tokens.next()
}
}
impl<'a, I> ser::Serializer for Serializer<'a, I>
where I: Iterator<Item=&'a Token<'a>>,
{
type Error = Error;
type MapState = ();
type SeqState = ();
type TupleState = ();
type TupleStructState = ();
type TupleVariantState = ();
type StructState = ();
type StructVariantState = ();
fn serialize_unit(&mut self) -> Result<(), Error> {
assert_eq!(self.tokens.next(), Some(&Token::Unit));
Ok(())
}
fn serialize_newtype_variant<T>(&mut self,
name: &str,
_variant_index: usize,
variant: &str,
value: T) -> Result<(), Error>
where T: Serialize,
{
assert_eq!(self.tokens.next(), Some(&Token::EnumNewType(name, variant)));
value.serialize(self)
}
fn serialize_unit_struct(&mut self, name: &str) -> Result<(), Error> {
assert_eq!(self.tokens.next(), Some(&Token::UnitStruct(name)));
Ok(())
}
fn serialize_unit_variant(&mut self,
name: &str,
_variant_index: usize,
variant: &str) -> Result<(), Error> {
assert_eq!(self.tokens.next(), Some(&Token::EnumUnit(name, variant)));
Ok(())
}
fn serialize_bool(&mut self, v: bool) -> Result<(), Error> {
assert_eq!(self.tokens.next(), Some(&Token::Bool(v)));
Ok(())
}
fn serialize_isize(&mut self, v: isize) -> Result<(), Error> {
assert_eq!(self.tokens.next(), Some(&Token::Isize(v)));
Ok(())
}
fn serialize_i8(&mut self, v: i8) -> Result<(), Error> {
assert_eq!(self.tokens.next(), Some(&Token::I8(v)));
Ok(())
}
fn serialize_i16(&mut self, v: i16) -> Result<(), Error> {
assert_eq!(self.tokens.next(), Some(&Token::I16(v)));
Ok(())
}
fn serialize_i32(&mut self, v: i32) -> Result<(), Error> {
assert_eq!(self.tokens.next(), Some(&Token::I32(v)));
Ok(())
}
fn serialize_i64(&mut self, v: i64) -> Result<(), Error> {
assert_eq!(self.tokens.next(), Some(&Token::I64(v)));
Ok(())
}
fn serialize_usize(&mut self, v: usize) -> Result<(), Error> {
assert_eq!(self.tokens.next(), Some(&Token::Usize(v)));
Ok(())
}
fn serialize_u8(&mut self, v: u8) -> Result<(), Error> {
assert_eq!(self.tokens.next(), Some(&Token::U8(v)));
Ok(())
}
fn serialize_u16(&mut self, v: u16) -> Result<(), Error> {
assert_eq!(self.tokens.next(), Some(&Token::U16(v)));
Ok(())
}
fn serialize_u32(&mut self, v: u32) -> Result<(), Error> {
assert_eq!(self.tokens.next(), Some(&Token::U32(v)));
Ok(())
}
fn serialize_u64(&mut self, v: u64) -> Result<(), Error> {
assert_eq!(self.tokens.next(), Some(&Token::U64(v)));
Ok(())
}
fn serialize_f32(&mut self, v: f32) -> Result<(), Error> {
assert_eq!(self.tokens.next(), Some(&Token::F32(v)));
Ok(())
}
fn serialize_f64(&mut self, v: f64) -> Result<(), Error> {
assert_eq!(self.tokens.next(), Some(&Token::F64(v)));
Ok(())
}
fn serialize_char(&mut self, v: char) -> Result<(), Error> {
assert_eq!(self.tokens.next(), Some(&Token::Char(v)));
Ok(())
}
fn serialize_str(&mut self, v: &str) -> Result<(), Error> {
assert_eq!(self.tokens.next(), Some(&Token::Str(v)));
Ok(())
}
fn serialize_none(&mut self) -> Result<(), Error> {
assert_eq!(self.tokens.next(), Some(&Token::Option(false)));
Ok(())
}
fn serialize_some<V>(&mut self, value: V) -> Result<(), Error>
where V: Serialize,
{
assert_eq!(self.tokens.next(), Some(&Token::Option(true)));
value.serialize(self)
}
fn serialize_seq<'b>(&'b mut self, len: Option<usize>) -> Result<(), Error>
{
assert_eq!(self.tokens.next(), Some(&Token::SeqStart(len)));
Ok(())
}
fn serialize_seq_elt<T>(&mut self, _: &mut (), value: T) -> Result<(), Error>
where T: Serialize
{
assert_eq!(self.tokens.next(), Some(&Token::SeqSep));
value.serialize(self)
}
fn serialize_seq_end(&mut self, _: ()) -> Result<(), Error> {
assert_eq!(self.tokens.next(), Some(&Token::SeqEnd));
Ok(())
}
fn serialize_seq_fixed_size(&mut self, len: usize) -> Result<(), Error>
{
assert_eq!(self.tokens.next(), Some(&Token::SeqArrayStart(len)));
Ok(())
}
fn serialize_tuple(&mut self, len: usize) -> Result<(), Error>
{
assert_eq!(self.tokens.next(), Some(&Token::TupleStart(len)));
Ok(())
}
fn serialize_tuple_elt<T>(&mut self, _: &mut (), value: T) -> Result<(), Error>
where T: Serialize
{
assert_eq!(self.tokens.next(), Some(&Token::TupleSep));
value.serialize(self)
}
fn serialize_tuple_end(&mut self, _: ()) -> Result<(), Error> {
assert_eq!(self.tokens.next(), Some(&Token::TupleEnd));
Ok(())
}
fn serialize_newtype_struct<T>(&mut self,
name: &'static str,
value: T) -> Result<(), Error>
where T: Serialize,
{
assert_eq!(self.tokens.next(), Some(&Token::StructNewType(name)));
value.serialize(self)
}
fn serialize_tuple_struct(&mut self, name: &'static str, len: usize) -> Result<(), Error>
{
assert_eq!(self.tokens.next(), Some(&Token::TupleStructStart(name, len)));
Ok(())
}
fn serialize_tuple_struct_elt<T>(&mut self, _: &mut (), value: T) -> Result<(), Error>
where T: Serialize
{
assert_eq!(self.tokens.next(), Some(&Token::TupleStructSep));
value.serialize(self)
}
fn serialize_tuple_struct_end(&mut self, _: ()) -> Result<(), Error> {
assert_eq!(self.tokens.next(), Some(&Token::TupleStructEnd));
Ok(())
}
fn serialize_tuple_variant(&mut self,
name: &str,
_variant_index: usize,
variant: &str,
len: usize) -> Result<(), Error>
{
assert_eq!(self.tokens.next(), Some(&Token::EnumSeqStart(name, variant, len)));
Ok(())
}
fn serialize_tuple_variant_elt<T>(&mut self, _: &mut (), value: T) -> Result<(), Error>
where T: Serialize
{
assert_eq!(self.tokens.next(), Some(&Token::EnumSeqSep));
value.serialize(self)
}
fn serialize_tuple_variant_end(&mut self, _: ()) -> Result<(), Error> {
assert_eq!(self.tokens.next(), Some(&Token::EnumSeqEnd));
Ok(())
}
fn serialize_map(&mut self, len: Option<usize>) -> Result<(), Error>
{
assert_eq!(self.tokens.next(), Some(&Token::MapStart(len)));
Ok(())
}
fn serialize_map_key<T>(&mut self, _: &mut (), key: T) -> Result<(), Self::Error> where T: Serialize {
assert_eq!(self.tokens.next(), Some(&Token::MapSep));
key.serialize(self)
}
fn serialize_map_value<T>(&mut self, _: &mut (), value: T) -> Result<(), Self::Error> where T: Serialize {
value.serialize(self)
}
fn serialize_map_end(&mut self, _: ()) -> Result<(), Self::Error> {
assert_eq!(self.tokens.next(), Some(&Token::MapEnd));
Ok(())
}
fn serialize_struct(&mut self, name: &str, len: usize) -> Result<(), Error>
{
assert_eq!(self.tokens.next(), Some(&Token::StructStart(name, len)));
Ok(())
}
fn serialize_struct_elt<V>(&mut self, _: &mut (), key: &'static str, value: V) -> Result<(), Self::Error> where V: Serialize {
assert_eq!(self.tokens.next(), Some(&Token::StructSep));
try!(key.serialize(self));
value.serialize(self)
}
fn serialize_struct_end(&mut self, _: ()) -> Result<(), Self::Error> {
assert_eq!(self.tokens.next(), Some(&Token::StructEnd));
Ok(())
}
fn serialize_struct_variant(&mut self,
name: &str,
_variant_index: usize,
variant: &str,
len: usize) -> Result<(), Error>
{
assert_eq!(self.tokens.next(), Some(&Token::EnumMapStart(name, variant, len)));
Ok(())
}
fn serialize_struct_variant_elt<V>(&mut self, _: &mut (), key: &'static str, value: V) -> Result<(), Self::Error> where V: Serialize {
assert_eq!(self.tokens.next(), Some(&Token::EnumMapSep));
try!(key.serialize(self));
value.serialize(self)
}
fn serialize_struct_variant_end(&mut self, _: ()) -> Result<(), Self::Error> {
assert_eq!(self.tokens.next(), Some(&Token::EnumMapEnd));
Ok(())
}
fn serialize_bytes(&mut self, value: &[u8]) -> Result<(), Self::Error> {
let mut state = try!(self.serialize_seq(Some(value.len())));
for c in value {
try!(self.serialize_seq_elt(&mut state, c));
}
self.serialize_seq_end(state)
}
}