use ducc::{Array, Ducc, Object, String as DuccString, Value};
use serde;
use super::{Error, Result, to_value};
pub struct Serializer<'ducc> {
pub ducc: &'ducc Ducc,
}
impl<'ducc> serde::Serializer for Serializer<'ducc> {
type Ok = Value<'ducc>;
type Error = Error;
type SerializeSeq = SerializeVec<'ducc>;
type SerializeTuple = SerializeVec<'ducc>;
type SerializeTupleStruct = SerializeVec<'ducc>;
type SerializeTupleVariant = SerializeTupleVariant<'ducc>;
type SerializeMap = SerializeMap<'ducc>;
type SerializeStruct = SerializeMap<'ducc>;
type SerializeStructVariant = SerializeStructVariant<'ducc>;
#[inline]
fn serialize_bool(self, value: bool) -> Result<Value<'ducc>> {
Ok(Value::Boolean(value))
}
#[inline]
fn serialize_i8(self, value: i8) -> Result<Value<'ducc>> {
self.serialize_f64(value as f64)
}
#[inline]
fn serialize_i16(self, value: i16) -> Result<Value<'ducc>> {
self.serialize_f64(value as f64)
}
#[inline]
fn serialize_i32(self, value: i32) -> Result<Value<'ducc>> {
self.serialize_f64(value as f64)
}
#[inline]
fn serialize_i64(self, value: i64) -> Result<Value<'ducc>> {
self.serialize_f64(value as f64)
}
#[inline]
fn serialize_u8(self, value: u8) -> Result<Value<'ducc>> {
self.serialize_f64(value as f64)
}
#[inline]
fn serialize_u16(self, value: u16) -> Result<Value<'ducc>> {
self.serialize_f64(value as f64)
}
#[inline]
fn serialize_u32(self, value: u32) -> Result<Value<'ducc>> {
self.serialize_f64(value as f64)
}
#[inline]
fn serialize_u64(self, value: u64) -> Result<Value<'ducc>> {
self.serialize_f64(value as f64)
}
#[inline]
fn serialize_f32(self, value: f32) -> Result<Value<'ducc>> {
self.serialize_f64(value as f64)
}
#[inline]
fn serialize_f64(self, value: f64) -> Result<Value<'ducc>> {
Ok(Value::Number(value))
}
#[inline]
fn serialize_char(self, value: char) -> Result<Value<'ducc>> {
let mut string = String::new();
string.push(value);
self.serialize_str(&string)
}
#[inline]
fn serialize_str(self, value: &str) -> Result<Value<'ducc>> {
Ok(Value::String(self.ducc.create_string(value)?))
}
#[inline]
fn serialize_bytes(self, value: &[u8]) -> Result<Value<'ducc>> {
Ok(Value::Bytes(self.ducc.create_bytes(value)?))
}
#[inline]
fn serialize_unit(self) -> Result<Value<'ducc>> {
Ok(Value::Undefined)
}
#[inline]
fn serialize_unit_struct(self, _name: &'static str) -> Result<Value<'ducc>> {
self.serialize_unit()
}
#[inline]
fn serialize_unit_variant(
self,
_name: &'static str,
_variant_index: u32,
variant: &'static str,
) -> Result<Value<'ducc>> {
self.serialize_str(variant)
}
#[inline]
fn serialize_newtype_struct<T>(
self,
_name: &'static str,
value: &T,
) -> Result<Value<'ducc>>
where
T: ?Sized + serde::Serialize,
{
value.serialize(self)
}
fn serialize_newtype_variant<T>(
self,
_name: &'static str,
_variant_index: u32,
variant: &'static str,
value: &T,
) -> Result<Value<'ducc>>
where
T: ?Sized + serde::Serialize,
{
let object = self.ducc.create_object();
let variant = self.ducc.create_string(variant)?;
let value = to_value(self.ducc, value)?;
object.set(variant, value)?;
Ok(Value::Object(object))
}
#[inline]
fn serialize_none(self) -> Result<Value<'ducc>> {
Ok(Value::Null)
}
#[inline]
fn serialize_some<T>(self, value: &T) -> Result<Value<'ducc>>
where
T: ?Sized + serde::Serialize,
{
value.serialize(self)
}
fn serialize_seq(self, _len: Option<usize>) -> Result<Self::SerializeSeq> {
let array = self.ducc.create_array();
Ok(SerializeVec {
ducc: self.ducc,
array,
})
}
fn serialize_tuple(self, len: usize) -> Result<Self::SerializeTuple> {
self.serialize_seq(Some(len))
}
fn serialize_tuple_struct(
self,
_name: &'static str,
len: usize,
) -> Result<Self::SerializeTupleStruct>
{
self.serialize_seq(Some(len))
}
fn serialize_tuple_variant(
self,
_name: &'static str,
_variant_index: u32,
variant: &'static str,
_len: usize,
) -> Result<Self::SerializeTupleVariant> {
let name = self.ducc.create_string(variant)?;
let array = self.ducc.create_array();
Ok(SerializeTupleVariant {
ducc: self.ducc,
array,
name,
})
}
fn serialize_map(self, _len: Option<usize>) -> Result<Self::SerializeMap> {
let object = self.ducc.create_object();
Ok(SerializeMap {
ducc: self.ducc,
object,
next_key: None,
})
}
fn serialize_struct(self, _name: &'static str, len: usize) -> Result<Self::SerializeStruct> {
self.serialize_map(Some(len))
}
fn serialize_struct_variant(
self,
_name: &'static str,
_variant_index: u32,
variant: &'static str,
_len: usize,
) -> Result<Self::SerializeStructVariant> {
let name = self.ducc.create_string(variant)?;
let object = self.ducc.create_object();
Ok(SerializeStructVariant {
ducc: self.ducc,
object,
name,
})
}
}
pub struct SerializeVec<'ducc> {
ducc: &'ducc Ducc,
array: Array<'ducc>,
}
impl<'ducc> serde::ser::SerializeSeq for SerializeVec<'ducc> {
type Ok = Value<'ducc>;
type Error = Error;
fn serialize_element<T>(&mut self, value: &T) -> Result<()>
where
T: ?Sized + serde::Serialize,
{
self.array.push(to_value(self.ducc, value)?)?;
Ok(())
}
fn end(self) -> Result<Value<'ducc>> {
Ok(Value::Array(self.array))
}
}
impl<'ducc> serde::ser::SerializeTuple for SerializeVec<'ducc> {
type Ok = Value<'ducc>;
type Error = Error;
fn serialize_element<T>(&mut self, value: &T) -> Result<()>
where
T: ?Sized + serde::Serialize,
{
serde::ser::SerializeSeq::serialize_element(self, value)
}
fn end(self) -> Result<Value<'ducc>> {
serde::ser::SerializeSeq::end(self)
}
}
impl<'ducc> serde::ser::SerializeTupleStruct for SerializeVec<'ducc> {
type Ok = Value<'ducc>;
type Error = Error;
fn serialize_field<T>(&mut self, value: &T) -> Result<()>
where
T: ?Sized + serde::Serialize,
{
serde::ser::SerializeSeq::serialize_element(self, value)
}
fn end(self) -> Result<Value<'ducc>> {
serde::ser::SerializeSeq::end(self)
}
}
pub struct SerializeTupleVariant<'ducc> {
ducc: &'ducc Ducc,
name: DuccString<'ducc>,
array: Array<'ducc>,
}
impl<'ducc> serde::ser::SerializeTupleVariant for SerializeTupleVariant<'ducc> {
type Ok = Value<'ducc>;
type Error = Error;
fn serialize_field<T>(&mut self, value: &T) -> Result<()>
where
T: ?Sized + serde::Serialize,
{
self.array.push(to_value(self.ducc, value)?)?;
Ok(())
}
fn end(self) -> Result<Value<'ducc>> {
let object = self.ducc.create_object();
object.set(self.name, self.array)?;
Ok(Value::Object(object))
}
}
pub struct SerializeMap<'ducc> {
ducc: &'ducc Ducc,
object: Object<'ducc>,
next_key: Option<Value<'ducc>>
}
impl<'ducc> serde::ser::SerializeMap for SerializeMap<'ducc> {
type Ok = Value<'ducc>;
type Error = Error;
fn serialize_key<T>(&mut self, key: &T) -> Result<()>
where
T: ?Sized + serde::Serialize,
{
self.next_key = Some(to_value(self.ducc, key)?);
Ok(())
}
fn serialize_value<T>(&mut self, value: &T) -> Result<()>
where
T: ?Sized + serde::Serialize,
{
let key = self.next_key.take().expect("serialize_value called before serialize_key");
self.object.set(key, to_value(self.ducc, value)?)?;
Ok(())
}
fn end(self) -> Result<Value<'ducc>> {
Ok(Value::Object(self.object))
}
}
impl<'ducc> serde::ser::SerializeStruct for SerializeMap<'ducc> {
type Ok = Value<'ducc>;
type Error = Error;
fn serialize_field<T>(&mut self, key: &'static str, value: &T) -> Result<()>
where
T: ?Sized + serde::Serialize,
{
serde::ser::SerializeMap::serialize_key(self, key)?;
serde::ser::SerializeMap::serialize_value(self, value)
}
fn end(self) -> Result<Value<'ducc>> {
serde::ser::SerializeMap::end(self)
}
}
pub struct SerializeStructVariant<'ducc> {
ducc: &'ducc Ducc,
object: Object<'ducc>,
name: DuccString<'ducc>,
}
impl<'ducc> serde::ser::SerializeStructVariant for SerializeStructVariant<'ducc> {
type Ok = Value<'ducc>;
type Error = Error;
fn serialize_field<T>(&mut self, key: &'static str, value: &T) -> Result<()>
where
T: ?Sized + serde::Serialize,
{
self.object.set(key, to_value(self.ducc, value)?)?;
Ok(())
}
fn end(self) -> Result<Value<'ducc>> {
let object = self.ducc.create_object();
object.set(self.name, self.object)?;
Ok(Value::Object(object))
}
}