use crate::any::{Any, Error, Inner};
use ordered_float::NotNan;
use serde::ser::{
Error as _, Impossible, SerializeMap, SerializeSeq, SerializeStruct, SerializeStructVariant,
SerializeTuple, SerializeTupleStruct, SerializeTupleVariant,
};
use serde::{Serialize, Serializer};
use std::collections::BTreeMap;
use std::f64;
use std::fmt;
impl Serialize for Any {
fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error>
where
S: Serializer,
{
match &self.0 {
Inner::Null => serializer.serialize_unit(),
Inner::Bool(v) => serializer.serialize_bool(*v),
Inner::Float(v) => serializer.serialize_f64(**v),
Inner::PositiveInt(v) => serializer.serialize_u64(*v),
Inner::NegativeInt(v) => serializer.serialize_i64(*v),
Inner::String(v) => serializer.serialize_str(v),
Inner::Array(v) => v.serialize(serializer),
Inner::Object(v) => v.serialize(serializer),
}
}
}
pub(crate) struct AnySerializer;
impl Serializer for AnySerializer {
type Ok = Any;
type Error = Error;
type SerializeSeq = ArraySerializer;
type SerializeTuple = ArraySerializer;
type SerializeTupleStruct = ArraySerializer;
type SerializeTupleVariant = TupleVariantSerializer;
type SerializeMap = ObjectSerializer;
type SerializeStruct = ObjectSerializer;
type SerializeStructVariant = StructVariantSerializer;
#[inline]
fn serialize_bool(self, v: bool) -> Result<Self::Ok, Self::Error> {
Ok(Any(Inner::Bool(v)))
}
#[inline]
fn serialize_i8(self, v: i8) -> Result<Self::Ok, Self::Error> {
self.serialize_i64(v as i64)
}
#[inline]
fn serialize_i16(self, v: i16) -> Result<Self::Ok, Self::Error> {
self.serialize_i64(v as i64)
}
#[inline]
fn serialize_i32(self, v: i32) -> Result<Self::Ok, Self::Error> {
self.serialize_i64(v as i64)
}
#[inline]
fn serialize_i64(self, v: i64) -> Result<Self::Ok, Self::Error> {
if v >= 0 {
Ok(Any(Inner::PositiveInt(v as u64)))
} else {
Ok(Any(Inner::NegativeInt(v)))
}
}
#[inline]
fn serialize_u8(self, v: u8) -> Result<Self::Ok, Self::Error> {
Ok(Any(Inner::PositiveInt(v as u64)))
}
#[inline]
fn serialize_u16(self, v: u16) -> Result<Self::Ok, Self::Error> {
Ok(Any(Inner::PositiveInt(v as u64)))
}
#[inline]
fn serialize_u32(self, v: u32) -> Result<Self::Ok, Self::Error> {
Ok(Any(Inner::PositiveInt(v as u64)))
}
#[inline]
fn serialize_u64(self, v: u64) -> Result<Self::Ok, Self::Error> {
Ok(Any(Inner::PositiveInt(v)))
}
#[inline]
fn serialize_f32(self, v: f32) -> Result<Self::Ok, Self::Error> {
self.serialize_f64(v as f64)
}
#[inline]
fn serialize_f64(self, v: f64) -> Result<Self::Ok, Self::Error> {
if v.is_nan() {
Ok(Any(Inner::String("NaN".to_string())))
} else if v == f64::INFINITY {
Ok(Any(Inner::String("Infinity".to_string())))
} else if v == f64::NEG_INFINITY {
Ok(Any(Inner::String("-Infinity".to_string())))
} else {
Ok(Any(Inner::Float(NotNan::new(v).unwrap())))
}
}
#[inline]
fn serialize_char(self, v: char) -> Result<Self::Ok, Self::Error> {
Ok(Any(Inner::String(v.to_string())))
}
#[inline]
fn serialize_str(self, v: &str) -> Result<Self::Ok, Self::Error> {
Ok(Any(Inner::String(v.to_string())))
}
#[inline]
fn serialize_bytes(self, v: &[u8]) -> Result<Self::Ok, Self::Error> {
Ok(Any(Inner::String(base64::encode(v))))
}
#[inline]
fn serialize_none(self) -> Result<Self::Ok, Self::Error> {
Ok(Any(Inner::Null))
}
fn serialize_some<T: ?Sized>(self, value: &T) -> Result<Self::Ok, Self::Error>
where
T: Serialize,
{
value.serialize(self)
}
#[inline]
fn serialize_unit(self) -> Result<Self::Ok, Self::Error> {
Ok(Any(Inner::Null))
}
#[inline]
fn serialize_unit_struct(self, _: &'static str) -> Result<Self::Ok, Self::Error> {
self.serialize_unit()
}
#[inline]
fn serialize_unit_variant(
self,
_: &'static str,
_: u32,
variant: &'static str,
) -> Result<Self::Ok, Self::Error> {
self.serialize_str(variant)
}
fn serialize_newtype_struct<T: ?Sized>(
self,
_: &'static str,
value: &T,
) -> Result<Self::Ok, Self::Error>
where
T: Serialize,
{
value.serialize(self)
}
fn serialize_newtype_variant<T>(
self,
_: &'static str,
_: u32,
variant: &'static str,
value: &T,
) -> Result<Self::Ok, Self::Error>
where
T: ?Sized + Serialize,
{
let mut map = BTreeMap::new();
let value = value.serialize(self)?;
map.insert(variant.to_string(), value);
Ok(Any(Inner::Object(map)))
}
#[inline]
fn serialize_seq(self, len: Option<usize>) -> Result<Self::SerializeSeq, Self::Error> {
Ok(ArraySerializer(Vec::with_capacity(len.unwrap_or(0))))
}
#[inline]
fn serialize_tuple(self, len: usize) -> Result<Self::SerializeTuple, Self::Error> {
self.serialize_seq(Some(len))
}
#[inline]
fn serialize_tuple_struct(
self,
_: &'static str,
len: usize,
) -> Result<Self::SerializeTupleStruct, Self::Error> {
self.serialize_seq(Some(len))
}
#[inline]
fn serialize_tuple_variant(
self,
_: &'static str,
_: u32,
variant: &'static str,
len: usize,
) -> Result<Self::SerializeTupleVariant, Self::Error> {
Ok(TupleVariantSerializer {
variant,
vec: Vec::with_capacity(len),
})
}
#[inline]
fn serialize_map(self, _: Option<usize>) -> Result<Self::SerializeMap, Self::Error> {
Ok(ObjectSerializer {
map: BTreeMap::new(),
key: None,
})
}
#[inline]
fn serialize_struct(
self,
_: &'static str,
len: usize,
) -> Result<Self::SerializeStruct, Self::Error> {
self.serialize_map(Some(len))
}
#[inline]
fn serialize_struct_variant(
self,
_: &'static str,
_: u32,
variant: &'static str,
_: usize,
) -> Result<Self::SerializeStructVariant, Self::Error> {
Ok(StructVariantSerializer {
variant,
map: BTreeMap::new(),
})
}
fn collect_str<T>(self, value: &T) -> Result<Self::Ok, Self::Error>
where
T: ?Sized + fmt::Display,
{
Ok(Any(Inner::String(value.to_string())))
}
}
pub(crate) struct ArraySerializer(Vec<Any>);
impl SerializeSeq for ArraySerializer {
type Ok = Any;
type Error = Error;
fn serialize_element<T>(&mut self, value: &T) -> Result<(), Self::Error>
where
T: ?Sized + Serialize,
{
let value = Any::new(value)?;
self.0.push(value);
Ok(())
}
#[inline]
fn end(self) -> Result<Self::Ok, Self::Error> {
Ok(Any(Inner::Array(self.0)))
}
}
impl SerializeTuple for ArraySerializer {
type Ok = Any;
type Error = Error;
fn serialize_element<T>(&mut self, value: &T) -> Result<(), Self::Error>
where
T: ?Sized + Serialize,
{
SerializeSeq::serialize_element(self, value)
}
#[inline]
fn end(self) -> Result<Self::Ok, Self::Error> {
SerializeSeq::end(self)
}
}
impl SerializeTupleStruct for ArraySerializer {
type Ok = Any;
type Error = Error;
fn serialize_field<T>(&mut self, value: &T) -> Result<(), Self::Error>
where
T: ?Sized + Serialize,
{
SerializeSeq::serialize_element(self, value)
}
#[inline]
fn end(self) -> Result<Self::Ok, Self::Error> {
SerializeSeq::end(self)
}
}
pub(crate) struct TupleVariantSerializer {
variant: &'static str,
vec: Vec<Any>,
}
impl SerializeTupleVariant for TupleVariantSerializer {
type Ok = Any;
type Error = Error;
fn serialize_field<T>(&mut self, value: &T) -> Result<(), Self::Error>
where
T: ?Sized + Serialize,
{
let value = Any::new(value)?;
self.vec.push(value);
Ok(())
}
#[inline]
fn end(self) -> Result<Self::Ok, Self::Error> {
let mut out = BTreeMap::new();
out.insert(self.variant.to_string(), Any(Inner::Array(self.vec)));
Ok(Any(Inner::Object(out)))
}
}
pub(crate) struct ObjectSerializer {
map: BTreeMap<String, Any>,
key: Option<String>,
}
impl SerializeMap for ObjectSerializer {
type Ok = Any;
type Error = Error;
fn serialize_key<T>(&mut self, key: &T) -> Result<(), Self::Error>
where
T: ?Sized + Serialize,
{
let key = key.serialize(KeySerializer)?;
self.key = Some(key);
Ok(())
}
fn serialize_value<T>(&mut self, value: &T) -> Result<(), Self::Error>
where
T: ?Sized + Serialize,
{
let key = match self.key.take() {
Some(key) => key,
None => return Err(Error::custom("key missing")),
};
let value = value.serialize(AnySerializer)?;
self.map.insert(key, value);
Ok(())
}
fn end(self) -> Result<Self::Ok, Self::Error> {
Ok(Any(Inner::Object(self.map)))
}
}
impl SerializeStruct for ObjectSerializer {
type Ok = Any;
type Error = Error;
fn serialize_field<T>(&mut self, key: &'static str, value: &T) -> Result<(), Self::Error>
where
T: ?Sized + Serialize,
{
SerializeMap::serialize_entry(self, key, value)
}
fn end(self) -> Result<Self::Ok, Self::Error> {
SerializeMap::end(self)
}
}
pub(crate) struct StructVariantSerializer {
variant: &'static str,
map: BTreeMap<String, Any>,
}
impl SerializeStructVariant for StructVariantSerializer {
type Ok = Any;
type Error = Error;
fn serialize_field<T>(&mut self, key: &'static str, value: &T) -> Result<(), Self::Error>
where
T: ?Sized + Serialize,
{
let key = key.serialize(KeySerializer)?;
let value = value.serialize(AnySerializer)?;
self.map.insert(key, value);
Ok(())
}
fn end(self) -> Result<Self::Ok, Self::Error> {
let mut out = BTreeMap::new();
out.insert(self.variant.to_string(), Any(Inner::Object(self.map)));
Ok(Any(Inner::Object(out)))
}
}
struct KeySerializer;
impl KeySerializer {
fn wrong_type<T>(self) -> Result<T, Error> {
Err(Error::custom("key must be a string"))
}
}
impl Serializer for KeySerializer {
type Ok = String;
type Error = Error;
type SerializeSeq = Impossible<String, Error>;
type SerializeTuple = Impossible<String, Error>;
type SerializeTupleStruct = Impossible<String, Error>;
type SerializeTupleVariant = Impossible<String, Error>;
type SerializeMap = Impossible<String, Error>;
type SerializeStruct = Impossible<String, Error>;
type SerializeStructVariant = Impossible<String, Error>;
fn serialize_bool(self, _: bool) -> Result<Self::Ok, Self::Error> {
self.wrong_type()
}
fn serialize_i8(self, v: i8) -> Result<Self::Ok, Self::Error> {
Ok(v.to_string())
}
fn serialize_i16(self, v: i16) -> Result<Self::Ok, Self::Error> {
Ok(v.to_string())
}
fn serialize_i32(self, v: i32) -> Result<Self::Ok, Self::Error> {
Ok(v.to_string())
}
fn serialize_i64(self, v: i64) -> Result<Self::Ok, Self::Error> {
Ok(v.to_string())
}
fn serialize_u8(self, v: u8) -> Result<Self::Ok, Self::Error> {
Ok(v.to_string())
}
fn serialize_u16(self, v: u16) -> Result<Self::Ok, Self::Error> {
Ok(v.to_string())
}
fn serialize_u32(self, v: u32) -> Result<Self::Ok, Self::Error> {
Ok(v.to_string())
}
fn serialize_u64(self, v: u64) -> Result<Self::Ok, Self::Error> {
Ok(v.to_string())
}
fn serialize_f32(self, _: f32) -> Result<Self::Ok, Self::Error> {
self.wrong_type()
}
fn serialize_f64(self, _: f64) -> Result<Self::Ok, Self::Error> {
self.wrong_type()
}
fn serialize_char(self, v: char) -> Result<Self::Ok, Self::Error> {
Ok(v.to_string())
}
#[inline]
fn serialize_str(self, v: &str) -> Result<Self::Ok, Self::Error> {
Ok(v.to_string())
}
fn serialize_bytes(self, v: &[u8]) -> Result<Self::Ok, Self::Error> {
Ok(base64::encode(v))
}
fn serialize_none(self) -> Result<Self::Ok, Self::Error> {
self.wrong_type()
}
fn serialize_some<T: ?Sized>(self, _: &T) -> Result<Self::Ok, Self::Error>
where
T: Serialize,
{
self.wrong_type()
}
fn serialize_unit(self) -> Result<Self::Ok, Self::Error> {
self.wrong_type()
}
fn serialize_unit_struct(self, _: &'static str) -> Result<Self::Ok, Self::Error> {
self.wrong_type()
}
#[inline]
fn serialize_unit_variant(
self,
_: &'static str,
_: u32,
variant: &'static str,
) -> Result<Self::Ok, Self::Error> {
Ok(variant.to_string())
}
fn serialize_newtype_struct<T: ?Sized>(
self,
_: &'static str,
_: &T,
) -> Result<Self::Ok, Self::Error>
where
T: Serialize,
{
self.wrong_type()
}
fn serialize_newtype_variant<T: ?Sized>(
self,
_: &'static str,
_: u32,
_: &'static str,
_: &T,
) -> Result<Self::Ok, Self::Error>
where
T: Serialize,
{
self.wrong_type()
}
fn serialize_seq(self, _: Option<usize>) -> Result<Self::SerializeSeq, Self::Error> {
self.wrong_type()
}
fn serialize_tuple(self, _: usize) -> Result<Self::SerializeTuple, Self::Error> {
self.wrong_type()
}
fn serialize_tuple_struct(
self,
_: &'static str,
_: usize,
) -> Result<Self::SerializeTupleStruct, Self::Error> {
self.wrong_type()
}
fn serialize_tuple_variant(
self,
_: &'static str,
_: u32,
_: &'static str,
_: usize,
) -> Result<Self::SerializeTupleVariant, Self::Error> {
self.wrong_type()
}
fn serialize_map(self, _: Option<usize>) -> Result<Self::SerializeMap, Self::Error> {
self.wrong_type()
}
fn serialize_struct(
self,
_: &'static str,
_: usize,
) -> Result<Self::SerializeStruct, Self::Error> {
self.wrong_type()
}
fn serialize_struct_variant(
self,
_: &'static str,
_: u32,
_: &'static str,
_: usize,
) -> Result<Self::SerializeStructVariant, Self::Error> {
self.wrong_type()
}
fn collect_str<T>(self, value: &T) -> Result<Self::Ok, Self::Error>
where
T: ?Sized + fmt::Display,
{
Ok(value.to_string())
}
}