use std::fmt::Display;
use serde::Serialize;
use serde::ser::{self, SerializeSeq, SerializeTuple, SerializeTupleStruct, SerializeMap, SerializeStruct};
use serde_bytes::Bytes;
use {Integer, IntPriv, Value};
use super::Error;
impl Serialize for Value {
fn serialize<S>(&self, s: S) -> Result<S::Ok, S::Error>
where S: ser::Serializer
{
match *self {
Value::Nil => s.serialize_unit(),
Value::Boolean(v) => s.serialize_bool(v),
Value::Integer(Integer { n }) => {
match n {
IntPriv::PosInt(n) => s.serialize_u64(n),
IntPriv::NegInt(n) => s.serialize_i64(n),
}
}
Value::F32(v) => s.serialize_f32(v),
Value::F64(v) => s.serialize_f64(v),
Value::String(ref v) => {
match v.s {
Ok(ref v) => s.serialize_str(v),
Err(ref v) => Bytes::from(&v.0[..]).serialize(s),
}
}
Value::Binary(ref v) => Bytes::from(&v[..]).serialize(s),
Value::Array(ref array) => {
let mut state = s.serialize_seq(Some(array.len()))?;
for item in array {
state.serialize_element(item)?;
}
state.end()
}
Value::Map(ref map) => {
let mut state = s.serialize_map(Some(map.len()))?;
for &(ref key, ref val) in map {
state.serialize_entry(key, val)?;
}
state.end()
}
Value::Ext(ty, ref buf) => {
let mut state = s.serialize_seq(Some(2))?;
state.serialize_element(&ty)?;
state.serialize_element(buf)?;
state.end()
}
}
}
}
impl ser::Error for Error {
fn custom<T: Display>(msg: T) -> Self {
Error::Syntax(format!("{}", msg))
}
}
struct Serializer;
pub fn to_value<T: Serialize>(value: T) -> Result<Value, Error> {
value.serialize(Serializer)
}
impl ser::Serializer for Serializer {
type Ok = Value;
type Error = Error;
type SerializeSeq = SerializeVec;
type SerializeTuple = SerializeVec;
type SerializeTupleStruct = SerializeVec;
type SerializeTupleVariant = SerializeTupleVariant;
type SerializeMap = DefaultSerializeMap;
type SerializeStruct = SerializeVec;
type SerializeStructVariant = SerializeStructVariant;
#[inline]
fn serialize_bool(self, val: bool) -> Result<Self::Ok, Self::Error> {
Ok(Value::Boolean(val))
}
#[inline]
fn serialize_i8(self, val: i8) -> Result<Self::Ok, Self::Error> {
self.serialize_i64(val as i64)
}
#[inline]
fn serialize_i16(self, val: i16) -> Result<Self::Ok, Self::Error> {
self.serialize_i64(val as i64)
}
#[inline]
fn serialize_i32(self, val: i32) -> Result<Self::Ok, Self::Error> {
self.serialize_i64(val as i64)
}
#[inline]
fn serialize_i64(self, val: i64) -> Result<Self::Ok, Self::Error> {
Ok(Value::from(val))
}
#[inline]
fn serialize_u8(self, val: u8) -> Result<Self::Ok, Self::Error> {
self.serialize_u64(val as u64)
}
#[inline]
fn serialize_u16(self, val: u16) -> Result<Self::Ok, Self::Error> {
self.serialize_u64(val as u64)
}
#[inline]
fn serialize_u32(self, val: u32) -> Result<Self::Ok, Self::Error> {
self.serialize_u64(val as u64)
}
#[inline]
fn serialize_u64(self, val: u64) -> Result<Self::Ok, Self::Error> {
Ok(Value::from(val))
}
#[inline]
fn serialize_f32(self, val: f32) -> Result<Self::Ok, Self::Error> {
Ok(Value::F32(val))
}
#[inline]
fn serialize_f64(self, val: f64) -> Result<Self::Ok, Self::Error> {
Ok(Value::F64(val))
}
#[inline]
fn serialize_char(self, val: char) -> Result<Self::Ok, Self::Error> {
let mut buf = String::new();
buf.push(val);
self.serialize_str(&buf)
}
#[inline]
fn serialize_str(self, val: &str) -> Result<Self::Ok, Self::Error> {
Ok(Value::String(val.into()))
}
#[inline]
fn serialize_bytes(self, val: &[u8]) -> Result<Self::Ok, Self::Error> {
Ok(Value::Binary(val.into()))
}
#[inline]
fn serialize_unit(self) -> Result<Self::Ok, Self::Error> {
Ok(Value::Nil)
}
#[inline]
fn serialize_unit_struct(self, _name: &'static str) -> Result<Self::Ok, Self::Error> {
Ok(Value::Array(Vec::new()))
}
#[inline]
fn serialize_unit_variant(self, _name: &'static str, idx: u32, _variant: &'static str) -> Result<Self::Ok, Self::Error> {
let vec = vec![
Value::from(idx),
Value::Array(Vec::new())
];
Ok(Value::Array(vec))
}
#[inline]
fn serialize_newtype_struct<T: ?Sized>(self, _name: &'static str, value: &T) -> Result<Self::Ok, Self::Error>
where T: Serialize
{
Ok(Value::Array(vec![to_value(value)?]))
}
fn serialize_newtype_variant<T: ?Sized>(self, _name: &'static str, idx: u32, _variant: &'static str, value: &T) -> Result<Self::Ok, Self::Error>
where T: Serialize
{
let vec = vec![
Value::from(idx),
Value::Array(vec![to_value(value)?]),
];
Ok(Value::Array(vec))
}
#[inline]
fn serialize_none(self) -> Result<Self::Ok, Self::Error> {
self.serialize_unit()
}
#[inline]
fn serialize_some<T: ?Sized>(self, value: &T) -> Result<Self::Ok, Self::Error>
where T: Serialize
{
value.serialize(self)
}
fn serialize_seq(self, len: Option<usize>) -> Result<Self::SerializeSeq, Self::Error> {
let se = SerializeVec {
vec: Vec::with_capacity(len.unwrap_or(0))
};
Ok(se)
}
fn serialize_tuple(self, len: usize) -> Result<Self::SerializeTuple, Error> {
self.serialize_seq(Some(len))
}
fn serialize_tuple_struct(self, _name: &'static str, len: usize) -> Result<Self::SerializeTupleStruct, Error> {
self.serialize_seq(Some(len))
}
fn serialize_tuple_variant(self, _name: &'static str, idx: u32, _variant: &'static str, len: usize) -> Result<Self::SerializeTupleVariant, Error> {
let se = SerializeTupleVariant {
idx: idx,
vec: Vec::with_capacity(len),
};
Ok(se)
}
fn serialize_map(self, len: Option<usize>) -> Result<Self::SerializeMap, Error> {
let se = DefaultSerializeMap {
map: Vec::with_capacity(len.unwrap_or(0)),
next_key: None,
};
Ok(se)
}
fn serialize_struct(self, name: &'static str, len: usize) -> Result<Self::SerializeStruct, Error> {
self.serialize_tuple_struct(name, len)
}
fn serialize_struct_variant(self, _name: &'static str, idx: u32, _variant: &'static str, len: usize) -> Result<Self::SerializeStructVariant, Error> {
let se = SerializeStructVariant {
idx: idx,
vec: Vec::with_capacity(len),
};
Ok(se)
}
}
#[doc(hidden)]
pub struct SerializeVec {
vec: Vec<Value>,
}
#[doc(hidden)]
pub struct SerializeTupleVariant {
idx: u32,
vec: Vec<Value>,
}
#[doc(hidden)]
pub struct DefaultSerializeMap {
map: Vec<(Value, Value)>,
next_key: Option<Value>,
}
#[doc(hidden)]
pub struct SerializeStructVariant {
idx: u32,
vec: Vec<Value>,
}
impl SerializeSeq for SerializeVec {
type Ok = Value;
type Error = Error;
fn serialize_element<T: ?Sized>(&mut self, value: &T) -> Result<(), Error>
where T: Serialize
{
self.vec.push(to_value(&value)?);
Ok(())
}
fn end(self) -> Result<Value, Error> {
Ok(Value::Array(self.vec))
}
}
impl SerializeTuple for SerializeVec {
type Ok = Value;
type Error = Error;
fn serialize_element<T: ?Sized>(&mut self, value: &T) -> Result<(), Error>
where T: Serialize
{
ser::SerializeSeq::serialize_element(self, value)
}
fn end(self) -> Result<Value, Error> {
ser::SerializeSeq::end(self)
}
}
impl SerializeTupleStruct for SerializeVec {
type Ok = Value;
type Error = Error;
fn serialize_field<T: ?Sized>(&mut self, value: &T) -> Result<(), Error>
where T: Serialize
{
ser::SerializeSeq::serialize_element(self, value)
}
fn end(self) -> Result<Value, Error> {
ser::SerializeSeq::end(self)
}
}
impl ser::SerializeTupleVariant for SerializeTupleVariant {
type Ok = Value;
type Error = Error;
fn serialize_field<T: ?Sized>(&mut self, value: &T) -> Result<(), Error>
where T: Serialize
{
self.vec.push(to_value(&value)?);
Ok(())
}
fn end(self) -> Result<Value, Error> {
Ok(Value::Array(vec![Value::from(self.idx), Value::Array(self.vec)]))
}
}
impl ser::SerializeMap for DefaultSerializeMap {
type Ok = Value;
type Error = Error;
fn serialize_key<T: ?Sized>(&mut self, key: &T) -> Result<(), Error>
where T: Serialize
{
self.next_key = Some(to_value(key)?);
Ok(())
}
fn serialize_value<T: ?Sized>(&mut self, value: &T) -> Result<(), Error>
where T: ser::Serialize
{
let key = self.next_key.take()
.expect("`serialize_value` called before `serialize_key`");
self.map.push((key, to_value(&value)?));
Ok(())
}
fn end(self) -> Result<Value, Error> {
Ok(Value::Map(self.map))
}
}
impl SerializeStruct for SerializeVec {
type Ok = Value;
type Error = Error;
fn serialize_field<T: ?Sized>(&mut self, _key: &'static str, value: &T) -> Result<(), Error>
where T: Serialize
{
ser::SerializeSeq::serialize_element(self, value)
}
fn end(self) -> Result<Value, Error> {
ser::SerializeSeq::end(self)
}
}
impl ser::SerializeStructVariant for SerializeStructVariant {
type Ok = Value;
type Error = Error;
fn serialize_field<T: ?Sized>(&mut self, _key: &'static str, value: &T) -> Result<(), Error>
where T: Serialize
{
self.vec.push(to_value(&value)?);
Ok(())
}
fn end(self) -> Result<Value, Error> {
Ok(Value::Array(vec![Value::from(self.idx), Value::Array(self.vec)]))
}
}