use std::{u32, i32, f64};
use serde::ser::{Serialize, Serializer, SerializeSeq, SerializeTuple, SerializeTupleStruct,
SerializeTupleVariant, SerializeMap, SerializeStruct, SerializeStructVariant};
use crate::message::Message;
use crate::value::{Value, TimeStamp, Binary};
use crate::array::Array;
use crate::message_id::MessageId;
use crate::encode::to_nson;
use crate::encode::EncodeError;
use crate::encode::EncodeResult;
impl Serialize for Message {
#[inline]
fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error>
where S: Serializer
{
let mut map = serializer.serialize_map(Some(self.len()))?;
for (k, v) in self {
map.serialize_key(k)?;
map.serialize_value(v)?;
}
map.end()
}
}
impl Serialize for Value {
#[inline]
fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error>
where S: Serializer
{
match *self {
Value::F32(v) => serializer.serialize_f32(v),
Value::F64(v) => serializer.serialize_f64(v),
Value::I32(v) => serializer.serialize_i32(v),
Value::I64(v) => serializer.serialize_i64(v),
Value::U32(v) => serializer.serialize_u32(v),
Value::U64(v) => serializer.serialize_u64(v),
Value::String(ref v) => serializer.serialize_str(v),
Value::Array(ref v) => v.serialize(serializer),
Value::Message(ref v) => v.serialize(serializer),
Value::Bool(v) => serializer.serialize_bool(v),
Value::Null => serializer.serialize_unit(),
Value::Binary(ref bytes) => serializer.serialize_bytes(&bytes.0),
_ => {
let msg = self.to_extended_message();
msg.serialize(serializer)
}
}
}
}
#[derive(Default)]
pub struct Encoder;
impl Encoder {
pub fn new() -> Encoder {
Encoder
}
}
impl Serializer for Encoder {
type Ok = Value;
type Error = EncodeError;
type SerializeSeq = ArraySerializer;
type SerializeTuple = TupleSerializer;
type SerializeTupleStruct = TupleStructSerializer;
type SerializeTupleVariant = TupleVariantSerializer;
type SerializeMap = MapSerializer;
type SerializeStruct = StructSerializer;
type SerializeStructVariant = StructVariantSerializer;
#[inline]
fn serialize_bool(self, value: bool) -> EncodeResult<Value> {
Ok(Value::Bool(value))
}
#[inline]
fn serialize_i8(self, value: i8) -> EncodeResult<Value> {
self.serialize_i32(i32::from(value))
}
#[inline]
fn serialize_u8(self, value: u8) -> EncodeResult<Value> {
self.serialize_u32(u32::from(value))
}
#[inline]
fn serialize_i16(self, value: i16) -> EncodeResult<Value> {
self.serialize_i32(i32::from(value))
}
#[inline]
fn serialize_u16(self, value: u16) -> EncodeResult<Value> {
self.serialize_u32(u32::from(value))
}
#[inline]
fn serialize_i32(self, value: i32) -> EncodeResult<Value> {
Ok(Value::I32(value))
}
#[inline]
fn serialize_u32(self, value: u32) -> EncodeResult<Value> {
Ok(Value::U32(value))
}
#[inline]
fn serialize_i64(self, value: i64) -> EncodeResult<Value> {
Ok(Value::I64(value))
}
#[inline]
fn serialize_u64(self, value: u64) -> EncodeResult<Value> {
Ok(Value::U64(value))
}
#[inline]
fn serialize_f32(self, value: f32) -> EncodeResult<Value> {
Ok(Value::F32(value))
}
#[inline]
fn serialize_f64(self, value: f64) -> EncodeResult<Value> {
Ok(Value::F64(value))
}
#[inline]
fn serialize_char(self, value: char) -> EncodeResult<Value> {
let mut s = String::new();
s.push(value);
self.serialize_str(&s)
}
#[inline]
fn serialize_str(self, value: &str) -> EncodeResult<Value> {
Ok(Value::String(value.to_string()))
}
fn serialize_bytes(self, value: &[u8]) -> EncodeResult<Value> {
Ok(Value::Binary(Binary(value.into())))
}
#[inline]
fn serialize_none(self) -> EncodeResult<Value> {
self.serialize_unit()
}
#[inline]
fn serialize_some<V: ?Sized>(self, value: &V) -> EncodeResult<Value>
where V: Serialize
{
value.serialize(self)
}
#[inline]
fn serialize_unit(self) -> EncodeResult<Value> {
Ok(Value::Null)
}
#[inline]
fn serialize_unit_struct(self, _name: &'static str) -> EncodeResult<Value> {
self.serialize_unit()
}
#[inline]
fn serialize_unit_variant(
self,
_name: &'static str,
_variant_index: u32,
variant: &'static str
) -> EncodeResult<Value> {
Ok(Value::String(variant.to_string()))
}
#[inline]
fn serialize_newtype_struct<T: ?Sized>(
self,
_name: &'static str,
value: &T
) -> EncodeResult<Value>
where T: Serialize
{
value.serialize(self)
}
#[inline]
fn serialize_newtype_variant<T: ?Sized>(
self,
_name: &'static str,
_variant_index: u32,
variant: &'static str,
value: &T
) -> EncodeResult<Value>
where T: Serialize
{
let mut ser = TupleVariantSerializer {
inner: Array::new(),
name: variant,
};
ser.serialize_field(value)?;
ser.end()
}
#[inline]
fn serialize_seq(self, len: Option<usize>) -> EncodeResult<Self::SerializeSeq> {
Ok(ArraySerializer { inner: Array::with_capacity(len.unwrap_or(0)) })
}
#[inline]
fn serialize_tuple(self, len: usize) -> EncodeResult<Self::SerializeTuple> {
Ok(TupleSerializer { inner: Array::with_capacity(len) })
}
#[inline]
fn serialize_tuple_struct(
self,
_name: &'static str,
len: usize
) -> EncodeResult<Self::SerializeTupleStruct> {
Ok(TupleStructSerializer { inner: Array::with_capacity(len) })
}
#[inline]
fn serialize_tuple_variant(
self,
_name: &'static str,
_variant_index: u32,
variant: &'static str,
len: usize
) -> EncodeResult<Self::SerializeTupleVariant> {
Ok(TupleVariantSerializer {
inner: Array::with_capacity(len),
name: variant,
})
}
#[inline]
fn serialize_map(self, _len: Option<usize>) -> EncodeResult<Self::SerializeMap> {
Ok(MapSerializer {
inner: Message::new(),
next_key: None,
})
}
#[inline]
fn serialize_struct(
self,
_name: &'static str,
_len: usize
) -> EncodeResult<Self::SerializeStruct> {
Ok(StructSerializer { inner: Message::new() })
}
#[inline]
fn serialize_struct_variant(
self,
_name: &'static str,
_variant_index: u32,
variant: &'static str,
_len: usize
) -> EncodeResult<Self::SerializeStructVariant> {
Ok(StructVariantSerializer {
name: variant,
inner: Message::new(),
})
}
}
pub struct ArraySerializer {
inner: Array
}
impl SerializeSeq for ArraySerializer {
type Ok = Value;
type Error = EncodeError;
fn serialize_element<T: ?Sized + Serialize>(&mut self, value: &T) -> EncodeResult<()> {
self.inner.push(to_nson(value)?);
Ok(())
}
fn end(self) -> EncodeResult<Value> {
Ok(Value::Array(self.inner))
}
}
pub struct TupleSerializer {
inner: Array
}
impl SerializeTuple for TupleSerializer {
type Ok = Value;
type Error = EncodeError;
fn serialize_element<T: ?Sized + Serialize>(&mut self, value: &T) -> EncodeResult<()> {
self.inner.push(to_nson(value)?);
Ok(())
}
fn end(self) -> EncodeResult<Value> {
Ok(Value::Array(self.inner))
}
}
pub struct TupleStructSerializer {
inner: Array
}
impl SerializeTupleStruct for TupleStructSerializer {
type Ok = Value;
type Error = EncodeError;
fn serialize_field<T: ?Sized + Serialize>(&mut self, value: &T) -> EncodeResult<()> {
self.inner.push(to_nson(value)?);
Ok(())
}
fn end(self) -> EncodeResult<Value> {
Ok(Value::Array(self.inner))
}
}
pub struct TupleVariantSerializer {
inner: Array,
name: &'static str
}
impl SerializeTupleVariant for TupleVariantSerializer {
type Ok = Value;
type Error = EncodeError;
fn serialize_field<T: ?Sized + Serialize>(&mut self, value: &T) -> EncodeResult<()> {
self.inner.push(to_nson(value)?);
Ok(())
}
fn end(self) -> EncodeResult<Value> {
let mut tuple_variant = Message::new();
if self.inner.len() == 1 {
tuple_variant.insert(self.name, self.inner.into_iter().next().unwrap());
} else {
tuple_variant.insert(self.name, Value::Array(self.inner));
}
Ok(Value::Message(tuple_variant))
}
}
pub struct MapSerializer {
inner: Message,
next_key: Option<String>
}
impl SerializeMap for MapSerializer {
type Ok = Value;
type Error = EncodeError;
fn serialize_key<T: ?Sized + Serialize>(&mut self, key: &T) -> EncodeResult<()> {
self.next_key = match to_nson(&key)? {
Value::String(s) => Some(s),
other => return Err(EncodeError::InvalidMapKeyType(other)),
};
Ok(())
}
fn serialize_value<T: ?Sized + Serialize>(&mut self, value: &T) -> EncodeResult<()> {
let key = self.next_key.take().unwrap_or_else(|| "".to_string());
self.inner.insert(key, to_nson(&value)?);
Ok(())
}
fn end(self) -> EncodeResult<Value> {
Ok(Value::from_extended_message(self.inner))
}
}
pub struct StructSerializer {
inner: Message
}
impl SerializeStruct for StructSerializer {
type Ok = Value;
type Error = EncodeError;
fn serialize_field<T: ?Sized + Serialize>(
&mut self,
key: &'static str,
value: &T
) -> EncodeResult<()> {
self.inner.insert(key, to_nson(value)?);
Ok(())
}
fn end(self) -> EncodeResult<Value> {
Ok(Value::from_extended_message(self.inner))
}
}
pub struct StructVariantSerializer {
inner: Message,
name: &'static str
}
impl SerializeStructVariant for StructVariantSerializer {
type Ok = Value;
type Error = EncodeError;
fn serialize_field<T: ?Sized + Serialize>(
&mut self,
key: &'static str,
value: &T
) -> EncodeResult<()> {
self.inner.insert(key, to_nson(value)?);
Ok(())
}
fn end(self) -> EncodeResult<Value> {
let var = Value::from_extended_message(self.inner);
let mut struct_variant = Message::new();
struct_variant.insert(self.name, var);
Ok(Value::Message(struct_variant))
}
}
impl Serialize for TimeStamp {
#[inline]
fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error>
where S: Serializer
{
let value = Value::TimeStamp(*self);
value.serialize(serializer)
}
}
impl Serialize for MessageId {
#[inline]
fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error>
where S: Serializer
{
let value = Value::MessageId(*self);
value.serialize(serializer)
}
}
impl Serialize for Binary {
#[inline]
fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error>
where
S: Serializer,
{
let value = Value::Binary(self.clone());
value.serialize(serializer)
}
}