use core::marker::PhantomData;
#[cfg(all(not(feature = "std"), feature = "collections"))]
use collections::{String, Vec};
#[cfg(all(feature = "alloc", not(feature = "std")))]
use alloc::boxed::Box;
#[cfg(feature = "collections")]
use collections::borrow::ToOwned;
use ser::{self, Serialize, Serializer};
pub struct SerializeTupleVariantAsMapValue<M> {
map: M,
name: &'static str,
fields: Vec<Content>,
}
impl<M> SerializeTupleVariantAsMapValue<M> {
pub fn new(map: M, name: &'static str, len: usize) -> Self {
SerializeTupleVariantAsMapValue {
map: map,
name: name,
fields: Vec::with_capacity(len),
}
}
}
impl<M> ser::SerializeTupleVariant for SerializeTupleVariantAsMapValue<M>
where M: ser::SerializeMap
{
type Ok = M::Ok;
type Error = M::Error;
fn serialize_field<T: ?Sized + Serialize>(&mut self,
value: &T)
-> Result<(), M::Error>
{
let value = try!(value.serialize(ContentSerializer::<M::Error>::new()));
self.fields.push(value);
Ok(())
}
fn end(mut self) -> Result<M::Ok, M::Error> {
try!(self.map.serialize_value(&Content::TupleStruct(self.name, self.fields)));
self.map.end()
}
}
pub struct SerializeStructVariantAsMapValue<M> {
map: M,
name: &'static str,
fields: Vec<(&'static str, Content)>,
}
impl<M> SerializeStructVariantAsMapValue<M> {
pub fn new(map: M, name: &'static str, len: usize) -> Self {
SerializeStructVariantAsMapValue {
map: map,
name: name,
fields: Vec::with_capacity(len),
}
}
}
impl<M> ser::SerializeStructVariant for SerializeStructVariantAsMapValue<M>
where M: ser::SerializeMap
{
type Ok = M::Ok;
type Error = M::Error;
fn serialize_field<T: ?Sized + Serialize>(&mut self,
key: &'static str,
value: &T)
-> Result<(), M::Error>
{
let value = try!(value.serialize(ContentSerializer::<M::Error>::new()));
self.fields.push((key, value));
Ok(())
}
fn end(mut self) -> Result<M::Ok, M::Error> {
try!(self.map.serialize_value(&Content::Struct(self.name, self.fields)));
self.map.end()
}
}
#[derive(Debug)]
enum Content {
Bool(bool),
U8(u8),
U16(u16),
U32(u32),
U64(u64),
I8(i8),
I16(i16),
I32(i32),
I64(i64),
F32(f32),
F64(f64),
Char(char),
String(String),
Bytes(Vec<u8>),
None,
Some(Box<Content>),
Unit,
UnitStruct(&'static str),
UnitVariant(&'static str, usize, &'static str),
NewtypeStruct(&'static str, Box<Content>),
NewtypeVariant(&'static str, usize, &'static str, Box<Content>),
Seq(Vec<Content>),
SeqFixedSize(Vec<Content>),
Tuple(Vec<Content>),
TupleStruct(&'static str, Vec<Content>),
TupleVariant(&'static str, usize, &'static str, Vec<Content>),
Map(Vec<(Content, Content)>),
Struct(&'static str, Vec<(&'static str, Content)>),
StructVariant(&'static str, usize, &'static str, Vec<(&'static str, Content)>),
}
impl Serialize for Content {
fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error>
where S: Serializer
{
match *self {
Content::Bool(b) => serializer.serialize_bool(b),
Content::U8(u) => serializer.serialize_u8(u),
Content::U16(u) => serializer.serialize_u16(u),
Content::U32(u) => serializer.serialize_u32(u),
Content::U64(u) => serializer.serialize_u64(u),
Content::I8(i) => serializer.serialize_i8(i),
Content::I16(i) => serializer.serialize_i16(i),
Content::I32(i) => serializer.serialize_i32(i),
Content::I64(i) => serializer.serialize_i64(i),
Content::F32(f) => serializer.serialize_f32(f),
Content::F64(f) => serializer.serialize_f64(f),
Content::Char(c) => serializer.serialize_char(c),
Content::String(ref s) => serializer.serialize_str(s),
Content::Bytes(ref b) => serializer.serialize_bytes(b),
Content::None => serializer.serialize_none(),
Content::Some(ref c) => serializer.serialize_some(&**c),
Content::Unit => serializer.serialize_unit(),
Content::UnitStruct(n) => serializer.serialize_unit_struct(n),
Content::UnitVariant(n, i, v) => serializer.serialize_unit_variant(n, i, v),
Content::NewtypeStruct(n, ref c) => serializer.serialize_newtype_struct(n, &**c),
Content::NewtypeVariant(n, i, v, ref c) => serializer.serialize_newtype_variant(n, i, v, &**c),
Content::Seq(ref elements) => elements.serialize(serializer),
Content::SeqFixedSize(ref elements) => {
use ser::SerializeSeq;
let mut seq = try!(serializer.serialize_seq_fixed_size(elements.len()));
for e in elements {
try!(seq.serialize_element(e));
}
seq.end()
}
Content::Tuple(ref elements) => {
use ser::SerializeTuple;
let mut tuple = try!(serializer.serialize_tuple(elements.len()));
for e in elements {
try!(tuple.serialize_element(e));
}
tuple.end()
}
Content::TupleStruct(n, ref fields) => {
use ser::SerializeTupleStruct;
let mut ts = try!(serializer.serialize_tuple_struct(n, fields.len()));
for f in fields {
try!(ts.serialize_field(f));
}
ts.end()
}
Content::TupleVariant(n, i, v, ref fields) => {
use ser::SerializeTupleVariant;
let mut tv = try!(serializer.serialize_tuple_variant(n, i, v, fields.len()));
for f in fields {
try!(tv.serialize_field(f));
}
tv.end()
}
Content::Map(ref entries) => {
use ser::SerializeMap;
let mut map = try!(serializer.serialize_map(Some(entries.len())));
for &(ref k, ref v) in entries {
try!(map.serialize_entry(k, v));
}
map.end()
}
Content::Struct(n, ref fields) => {
use ser::SerializeStruct;
let mut s = try!(serializer.serialize_struct(n, fields.len()));
for &(k, ref v) in fields {
try!(s.serialize_field(k, v));
}
s.end()
}
Content::StructVariant(n, i, v, ref fields) => {
use ser::SerializeStructVariant;
let mut sv = try!(serializer.serialize_struct_variant(n, i, v, fields.len()));
for &(k, ref v) in fields {
try!(sv.serialize_field(k, v));
}
sv.end()
}
}
}
}
struct ContentSerializer<E> {
error: PhantomData<E>,
}
impl<E> ContentSerializer<E> {
fn new() -> Self {
ContentSerializer {
error: PhantomData,
}
}
}
impl<E> Serializer for ContentSerializer<E>
where E: ser::Error
{
type Ok = Content;
type Error = E;
type SerializeSeq = SerializeSeq<E>;
type SerializeTuple = SerializeTuple<E>;
type SerializeTupleStruct = SerializeTupleStruct<E>;
type SerializeTupleVariant = SerializeTupleVariant<E>;
type SerializeMap = SerializeMap<E>;
type SerializeStruct = SerializeStruct<E>;
type SerializeStructVariant = SerializeStructVariant<E>;
fn serialize_bool(self, v: bool) -> Result<Content, E> {
Ok(Content::Bool(v))
}
fn serialize_i8(self, v: i8) -> Result<Content, E> {
Ok(Content::I8(v))
}
fn serialize_i16(self, v: i16) -> Result<Content, E> {
Ok(Content::I16(v))
}
fn serialize_i32(self, v: i32) -> Result<Content, E> {
Ok(Content::I32(v))
}
fn serialize_i64(self, v: i64) -> Result<Content, E> {
Ok(Content::I64(v))
}
fn serialize_u8(self, v: u8) -> Result<Content, E> {
Ok(Content::U8(v))
}
fn serialize_u16(self, v: u16) -> Result<Content, E> {
Ok(Content::U16(v))
}
fn serialize_u32(self, v: u32) -> Result<Content, E> {
Ok(Content::U32(v))
}
fn serialize_u64(self, v: u64) -> Result<Content, E> {
Ok(Content::U64(v))
}
fn serialize_f32(self, v: f32) -> Result<Content, E> {
Ok(Content::F32(v))
}
fn serialize_f64(self, v: f64) -> Result<Content, E> {
Ok(Content::F64(v))
}
fn serialize_char(self, v: char) -> Result<Content, E> {
Ok(Content::Char(v))
}
fn serialize_str(self, value: &str) -> Result<Content, E> {
Ok(Content::String(value.to_owned()))
}
fn serialize_bytes(self, value: &[u8]) -> Result<Content, E> {
Ok(Content::Bytes(value.to_owned()))
}
fn serialize_none(self) -> Result<Content, E> {
Ok(Content::None)
}
fn serialize_some<T: ?Sized + Serialize>(self,
value: &T)
-> Result<Content, E> {
Ok(Content::Some(Box::new(try!(value.serialize(self)))))
}
fn serialize_unit(self) -> Result<Content, E> {
Ok(Content::Unit)
}
fn serialize_unit_struct(self,
name: &'static str)
-> Result<Content, E> {
Ok(Content::UnitStruct(name))
}
fn serialize_unit_variant(self,
name: &'static str,
variant_index: usize,
variant: &'static str)
-> Result<Content, E> {
Ok(Content::UnitVariant(name, variant_index, variant))
}
fn serialize_newtype_struct<T: ?Sized + Serialize>(self,
name: &'static str,
value: &T)
-> Result<Content, E> {
Ok(Content::NewtypeStruct(name, Box::new(try!(value.serialize(self)))))
}
fn serialize_newtype_variant<T: ?Sized + Serialize>(self,
name: &'static str,
variant_index: usize,
variant: &'static str,
value: &T)
-> Result<Content, E> {
Ok(Content::NewtypeVariant(name, variant_index, variant, Box::new(try!(value.serialize(self)))))
}
fn serialize_seq(self,
len: Option<usize>)
-> Result<Self::SerializeSeq, E> {
Ok(SerializeSeq {
fixed_size: false,
elements: Vec::with_capacity(len.unwrap_or(0)),
error: PhantomData,
})
}
fn serialize_seq_fixed_size(self,
size: usize)
-> Result<Self::SerializeSeq, E> {
Ok(SerializeSeq {
fixed_size: true,
elements: Vec::with_capacity(size),
error: PhantomData,
})
}
fn serialize_tuple(self,
len: usize)
-> Result<Self::SerializeTuple, E> {
Ok(SerializeTuple {
elements: Vec::with_capacity(len),
error: PhantomData,
})
}
fn serialize_tuple_struct(self,
name: &'static str,
len: usize)
-> Result<Self::SerializeTupleStruct, E> {
Ok(SerializeTupleStruct {
name: name,
fields: Vec::with_capacity(len),
error: PhantomData,
})
}
fn serialize_tuple_variant(self,
name: &'static str,
variant_index: usize,
variant: &'static str,
len: usize)
-> Result<Self::SerializeTupleVariant, E> {
Ok(SerializeTupleVariant {
name: name,
variant_index: variant_index,
variant: variant,
fields: Vec::with_capacity(len),
error: PhantomData,
})
}
fn serialize_map(self,
len: Option<usize>)
-> Result<Self::SerializeMap, E> {
Ok(SerializeMap {
entries: Vec::with_capacity(len.unwrap_or(0)),
key: None,
error: PhantomData,
})
}
fn serialize_struct(self,
name: &'static str,
len: usize)
-> Result<Self::SerializeStruct, E> {
Ok(SerializeStruct {
name: name,
fields: Vec::with_capacity(len),
error: PhantomData,
})
}
fn serialize_struct_variant(self,
name: &'static str,
variant_index: usize,
variant: &'static str,
len: usize)
-> Result<Self::SerializeStructVariant, E> {
Ok(SerializeStructVariant {
name: name,
variant_index: variant_index,
variant: variant,
fields: Vec::with_capacity(len),
error: PhantomData,
})
}
}
struct SerializeSeq<E> {
fixed_size: bool,
elements: Vec<Content>,
error: PhantomData<E>,
}
impl<E> ser::SerializeSeq for SerializeSeq<E>
where E: ser::Error
{
type Ok = Content;
type Error = E;
fn serialize_element<T: ?Sized + Serialize>(&mut self,
value: &T)
-> Result<(), E> {
let value = try!(value.serialize(ContentSerializer::<E>::new()));
self.elements.push(value);
Ok(())
}
fn end(self) -> Result<Content, E> {
Ok(if self.fixed_size {
Content::SeqFixedSize(self.elements)
} else {
Content::Seq(self.elements)
})
}
}
struct SerializeTuple<E> {
elements: Vec<Content>,
error: PhantomData<E>,
}
impl<E> ser::SerializeTuple for SerializeTuple<E>
where E: ser::Error
{
type Ok = Content;
type Error = E;
fn serialize_element<T: ?Sized + Serialize>(&mut self,
value: &T)
-> Result<(), E> {
let value = try!(value.serialize(ContentSerializer::<E>::new()));
self.elements.push(value);
Ok(())
}
fn end(self) -> Result<Content, E> {
Ok(Content::Tuple(self.elements))
}
}
struct SerializeTupleStruct<E> {
name: &'static str,
fields: Vec<Content>,
error: PhantomData<E>,
}
impl<E> ser::SerializeTupleStruct for SerializeTupleStruct<E>
where E: ser::Error
{
type Ok = Content;
type Error = E;
fn serialize_field<T: ?Sized + Serialize>(&mut self,
value: &T)
-> Result<(), E> {
let value = try!(value.serialize(ContentSerializer::<E>::new()));
self.fields.push(value);
Ok(())
}
fn end(self) -> Result<Content, E> {
Ok(Content::TupleStruct(self.name, self.fields))
}
}
struct SerializeTupleVariant<E> {
name: &'static str,
variant_index: usize,
variant: &'static str,
fields: Vec<Content>,
error: PhantomData<E>,
}
impl<E> ser::SerializeTupleVariant for SerializeTupleVariant<E>
where E: ser::Error
{
type Ok = Content;
type Error = E;
fn serialize_field<T: ?Sized + Serialize>(&mut self,
value: &T)
-> Result<(), E> {
let value = try!(value.serialize(ContentSerializer::<E>::new()));
self.fields.push(value);
Ok(())
}
fn end(self) -> Result<Content, E> {
Ok(Content::TupleVariant(self.name, self.variant_index, self.variant, self.fields))
}
}
struct SerializeMap<E> {
entries: Vec<(Content, Content)>,
key: Option<Content>,
error: PhantomData<E>,
}
impl<E> ser::SerializeMap for SerializeMap<E>
where E: ser::Error
{
type Ok = Content;
type Error = E;
fn serialize_key<T: ?Sized + Serialize>(&mut self,
key: &T)
-> Result<(), E> {
let key = try!(key.serialize(ContentSerializer::<E>::new()));
self.key = Some(key);
Ok(())
}
fn serialize_value<T: ?Sized + Serialize>(&mut self,
value: &T)
-> Result<(), E> {
let key = self.key.take().expect("serialize_value called before serialize_key");
let value = try!(value.serialize(ContentSerializer::<E>::new()));
self.entries.push((key, value));
Ok(())
}
fn end(self) -> Result<Content, E> {
Ok(Content::Map(self.entries))
}
fn serialize_entry<K: ?Sized + Serialize, V: ?Sized + Serialize>(&mut self,
key: &K,
value: &V)
-> Result<(), E> {
let key = try!(key.serialize(ContentSerializer::<E>::new()));
let value = try!(value.serialize(ContentSerializer::<E>::new()));
self.entries.push((key, value));
Ok(())
}
}
struct SerializeStruct<E> {
name: &'static str,
fields: Vec<(&'static str, Content)>,
error: PhantomData<E>,
}
impl<E> ser::SerializeStruct for SerializeStruct<E>
where E: ser::Error
{
type Ok = Content;
type Error = E;
fn serialize_field<T: ?Sized + Serialize>(&mut self,
key: &'static str,
value: &T)
-> Result<(), E> {
let value = try!(value.serialize(ContentSerializer::<E>::new()));
self.fields.push((key, value));
Ok(())
}
fn end(self) -> Result<Content, E> {
Ok(Content::Struct(self.name, self.fields))
}
}
struct SerializeStructVariant<E> {
name: &'static str,
variant_index: usize,
variant: &'static str,
fields: Vec<(&'static str, Content)>,
error: PhantomData<E>,
}
impl<E> ser::SerializeStructVariant for SerializeStructVariant<E>
where E: ser::Error
{
type Ok = Content;
type Error = E;
fn serialize_field<T: ?Sized + Serialize>(&mut self,
key: &'static str,
value: &T)
-> Result<(), E> {
let value = try!(value.serialize(ContentSerializer::<E>::new()));
self.fields.push((key, value));
Ok(())
}
fn end(self) -> Result<Content, E> {
Ok(Content::StructVariant(self.name, self.variant_index, self.variant, self.fields))
}
}