use super::to_value;
use crate::{
cow::Cow,
stry,
value::borrowed::{Object, Value},
Error, ErrorType, Result,
};
use crate::{ObjectHasher, StaticNode};
use serde_ext::ser::{
self, Serialize, SerializeMap as SerializeMapTrait, SerializeSeq as SerializeSeqTrait,
};
use std::marker::PhantomData;
type Impossible<T> = ser::Impossible<T, Error>;
impl<'value> Serialize for Value<'value> {
fn serialize<S>(&self, serializer: S) -> std::result::Result<S::Ok, S::Error>
where
S: ser::Serializer,
{
match self {
Value::Static(StaticNode::Null) => serializer.serialize_unit(),
Value::Static(StaticNode::Bool(b)) => serializer.serialize_bool(*b),
#[allow(clippy::useless_conversion)] Value::Static(StaticNode::F64(f)) => serializer.serialize_f64((*f).into()),
Value::Static(StaticNode::U64(i)) => serializer.serialize_u64(*i),
#[cfg(feature = "128bit")]
Value::Static(StaticNode::U128(i)) => serializer.serialize_u128(*i),
Value::Static(StaticNode::I64(i)) => serializer.serialize_i64(*i),
#[cfg(feature = "128bit")]
Value::Static(StaticNode::I128(i)) => serializer.serialize_i128(*i),
Value::String(s) => serializer.serialize_str(s),
Value::Array(v) => {
let mut seq = serializer.serialize_seq(Some(v.len()))?;
for e in v.as_ref() {
seq.serialize_element(e)?;
}
seq.end()
}
Value::Object(m) => {
let mut map = serializer.serialize_map(Some(m.len()))?;
for (k, v) in m.iter() {
let k: &str = k;
map.serialize_entry(k, v)?;
}
map.end()
}
}
}
}
pub struct Serializer<'se> {
marker: PhantomData<&'se u8>,
}
impl<'se> Default for Serializer<'se> {
fn default() -> Self {
Self {
marker: PhantomData,
}
}
}
impl<'se> serde::Serializer for Serializer<'se> {
type Ok = Value<'se>;
type Error = Error;
type SerializeSeq = SerializeVec<'se>;
type SerializeTuple = SerializeVec<'se>;
type SerializeTupleStruct = SerializeVec<'se>;
type SerializeTupleVariant = SerializeTupleVariant<'se>;
type SerializeMap = SerializeMap<'se>;
type SerializeStruct = SerializeMap<'se>;
type SerializeStructVariant = SerializeStructVariant<'se>;
#[cfg_attr(not(feature = "no-inline"), inline)]
fn serialize_bool(self, value: bool) -> Result<Value<'se>> {
Ok(Value::Static(StaticNode::Bool(value)))
}
#[cfg_attr(not(feature = "no-inline"), inline)]
fn serialize_i8(self, value: i8) -> Result<Value<'se>> {
self.serialize_i64(i64::from(value))
}
#[cfg_attr(not(feature = "no-inline"), inline)]
fn serialize_i16(self, value: i16) -> Result<Value<'se>> {
self.serialize_i64(i64::from(value))
}
#[cfg_attr(not(feature = "no-inline"), inline)]
fn serialize_i32(self, value: i32) -> Result<Value<'se>> {
self.serialize_i64(i64::from(value))
}
fn serialize_i64(self, value: i64) -> Result<Value<'se>> {
Ok(Value::Static(StaticNode::I64(value)))
}
#[cfg(feature = "128bit")]
fn serialize_i128(self, value: i128) -> Result<Value<'se>> {
Ok(Value::Static(StaticNode::I128(value)))
}
#[cfg_attr(not(feature = "no-inline"), inline)]
fn serialize_u8(self, value: u8) -> Result<Value<'se>> {
self.serialize_u64(u64::from(value))
}
#[cfg_attr(not(feature = "no-inline"), inline)]
fn serialize_u16(self, value: u16) -> Result<Value<'se>> {
self.serialize_u64(u64::from(value))
}
#[cfg_attr(not(feature = "no-inline"), inline)]
fn serialize_u32(self, value: u32) -> Result<Value<'se>> {
self.serialize_u64(u64::from(value))
}
#[cfg_attr(not(feature = "no-inline"), inline)]
fn serialize_u64(self, value: u64) -> Result<Value<'se>> {
Ok(Value::Static(StaticNode::U64(value)))
}
#[cfg(feature = "128bit")]
fn serialize_u128(self, value: u128) -> Result<Value<'se>> {
Ok(Value::Static(StaticNode::U128(value)))
}
#[cfg_attr(not(feature = "no-inline"), inline)]
fn serialize_f32(self, value: f32) -> Result<Value<'se>> {
self.serialize_f64(f64::from(value))
}
#[cfg_attr(not(feature = "no-inline"), inline)]
fn serialize_f64(self, value: f64) -> Result<Value<'se>> {
Ok(Value::Static(StaticNode::from(value)))
}
#[cfg_attr(not(feature = "no-inline"), inline)]
fn serialize_char(self, value: char) -> Result<Value<'se>> {
let mut s = String::new();
s.push(value);
self.serialize_str(&s)
}
#[cfg_attr(not(feature = "no-inline"), inline)]
fn serialize_str(self, value: &str) -> Result<Value<'se>> {
Ok(Value::from(value.to_owned()))
}
#[cfg_attr(not(feature = "no-inline"), inline)]
fn serialize_bytes(self, value: &[u8]) -> Result<Value<'se>> {
Ok(value.iter().copied().collect())
}
#[cfg_attr(not(feature = "no-inline"), inline)]
fn serialize_unit(self) -> Result<Value<'se>> {
Ok(Value::Static(StaticNode::Null))
}
#[cfg_attr(not(feature = "no-inline"), inline)]
fn serialize_unit_struct(self, _name: &'static str) -> Result<Value<'se>> {
self.serialize_unit()
}
#[cfg_attr(not(feature = "no-inline"), inline)]
fn serialize_unit_variant(
self,
_name: &'static str,
_variant_index: u32,
variant: &'static str,
) -> Result<Value<'se>> {
self.serialize_str(variant)
}
#[cfg_attr(not(feature = "no-inline"), inline)]
fn serialize_newtype_struct<T>(self, _name: &'static str, value: &T) -> Result<Value<'se>>
where
T: ?Sized + Serialize,
{
value.serialize(self)
}
fn serialize_newtype_variant<T>(
self,
_name: &'static str,
_variant_index: u32,
variant: &'static str,
value: &T,
) -> Result<Value<'se>>
where
T: ?Sized + Serialize,
{
let mut values = Object::with_capacity_and_hasher(1, ObjectHasher::default());
let x = stry!(to_value(value));
values.insert_nocheck(variant.into(), x);
Ok(Value::from(values))
}
#[cfg_attr(not(feature = "no-inline"), inline)]
fn serialize_none(self) -> Result<Value<'se>> {
self.serialize_unit()
}
#[cfg_attr(not(feature = "no-inline"), inline)]
fn serialize_some<T>(self, value: &T) -> Result<Value<'se>>
where
T: ?Sized + Serialize,
{
value.serialize(self)
}
fn serialize_seq(self, len: Option<usize>) -> Result<Self::SerializeSeq> {
Ok(SerializeVec {
vec: Vec::with_capacity(len.unwrap_or(0)),
})
}
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> {
Ok(SerializeTupleVariant {
name: variant,
vec: Vec::with_capacity(len),
})
}
fn serialize_map(self, len: Option<usize>) -> Result<Self::SerializeMap> {
Ok(SerializeMap {
map: Object::with_capacity_and_hasher(len.unwrap_or(0), ObjectHasher::default()),
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> {
Ok(SerializeStructVariant {
name: variant,
map: Object::with_capacity_and_hasher(len, ObjectHasher::default()),
})
}
}
pub struct SerializeVec<'se> {
vec: Vec<Value<'se>>,
}
pub struct SerializeTupleVariant<'se> {
name: &'se str,
vec: Vec<Value<'se>>,
}
pub struct SerializeMap<'se> {
map: Object<'se>,
next_key: Option<Cow<'se, str>>,
}
pub struct SerializeStructVariant<'se> {
name: &'se str,
map: Object<'se>,
}
impl<'se> serde::ser::SerializeSeq for SerializeVec<'se> {
type Ok = Value<'se>;
type Error = Error;
fn serialize_element<T>(&mut self, value: &T) -> Result<()>
where
T: ?Sized + Serialize,
{
self.vec.push(stry!(to_value(value)));
Ok(())
}
fn end(self) -> Result<Value<'se>> {
Ok(Value::Array(Box::new(self.vec)))
}
}
impl<'se> serde::ser::SerializeTuple for SerializeVec<'se> {
type Ok = Value<'se>;
type Error = Error;
fn serialize_element<T>(&mut self, value: &T) -> Result<()>
where
T: ?Sized + Serialize,
{
serde::ser::SerializeSeq::serialize_element(self, value)
}
fn end(self) -> Result<Value<'se>> {
serde::ser::SerializeSeq::end(self)
}
}
impl<'se> serde::ser::SerializeTupleStruct for SerializeVec<'se> {
type Ok = Value<'se>;
type Error = Error;
fn serialize_field<T>(&mut self, value: &T) -> Result<()>
where
T: ?Sized + Serialize,
{
serde::ser::SerializeSeq::serialize_element(self, value)
}
fn end(self) -> Result<Value<'se>> {
serde::ser::SerializeSeq::end(self)
}
}
impl<'se> serde::ser::SerializeTupleVariant for SerializeTupleVariant<'se> {
type Ok = Value<'se>;
type Error = Error;
fn serialize_field<T>(&mut self, value: &T) -> Result<()>
where
T: ?Sized + Serialize,
{
self.vec.push(stry!(to_value(value)));
Ok(())
}
fn end(self) -> Result<Value<'se>> {
let mut object = Object::with_capacity_and_hasher(1, ObjectHasher::default());
object.insert_nocheck(self.name.into(), Value::Array(Box::new(self.vec)));
Ok(Value::Object(Box::new(object)))
}
}
impl<'se> serde::ser::SerializeMap for SerializeMap<'se> {
type Ok = Value<'se>;
type Error = Error;
fn serialize_key<T>(&mut self, key: &T) -> Result<()>
where
T: ?Sized + Serialize,
{
self.next_key = Some(stry!(key.serialize(MapKeySerializer {
marker: PhantomData
})));
Ok(())
}
fn serialize_value<T>(&mut self, value: &T) -> Result<()>
where
T: ?Sized + Serialize,
{
let key = self.next_key.take();
let key = key.expect("serialize_value called before serialize_key");
self.map.insert(key, stry!(to_value(value)));
Ok(())
}
fn end(self) -> Result<Value<'se>> {
Ok(Value::Object(Box::new(self.map)))
}
}
struct MapKeySerializer<'se> {
marker: PhantomData<&'se u8>,
}
fn key_must_be_a_string() -> Error {
Error::generic(ErrorType::KeyMustBeAString)
}
impl<'se> serde_ext::Serializer for MapKeySerializer<'se> {
type Ok = Cow<'se, str>;
type Error = Error;
type SerializeSeq = Impossible<Cow<'se, str>>;
type SerializeTuple = Impossible<Cow<'se, str>>;
type SerializeTupleStruct = Impossible<Cow<'se, str>>;
type SerializeTupleVariant = Impossible<Cow<'se, str>>;
type SerializeMap = Impossible<Cow<'se, str>>;
type SerializeStruct = Impossible<Cow<'se, str>>;
type SerializeStructVariant = Impossible<Cow<'se, str>>;
#[cfg_attr(not(feature = "no-inline"), inline)]
fn serialize_unit_variant(
self,
_name: &'static str,
_variant_index: u32,
variant: &'static str,
) -> Result<Self::Ok> {
Ok(Cow::from(variant))
}
#[cfg_attr(not(feature = "no-inline"), inline)]
fn serialize_newtype_struct<T>(self, _name: &'static str, value: &T) -> Result<Self::Ok>
where
T: ?Sized + Serialize,
{
value.serialize(self)
}
fn serialize_bool(self, _value: bool) -> Result<Self::Ok> {
Err(key_must_be_a_string())
}
fn serialize_i8(self, value: i8) -> Result<Self::Ok> {
Ok(value.to_string().into())
}
fn serialize_i16(self, value: i16) -> Result<Self::Ok> {
Ok(value.to_string().into())
}
fn serialize_i32(self, value: i32) -> Result<Self::Ok> {
Ok(value.to_string().into())
}
fn serialize_i64(self, value: i64) -> Result<Self::Ok> {
Ok(value.to_string().into())
}
fn serialize_u8(self, value: u8) -> Result<Self::Ok> {
Ok(value.to_string().into())
}
fn serialize_u16(self, value: u16) -> Result<Self::Ok> {
Ok(value.to_string().into())
}
fn serialize_u32(self, value: u32) -> Result<Self::Ok> {
Ok(value.to_string().into())
}
fn serialize_u64(self, value: u64) -> Result<Self::Ok> {
Ok(value.to_string().into())
}
fn serialize_f32(self, _value: f32) -> Result<Self::Ok> {
Err(key_must_be_a_string())
}
fn serialize_f64(self, _value: f64) -> Result<Self::Ok> {
Err(key_must_be_a_string())
}
fn serialize_char(self, value: char) -> Result<Self::Ok> {
Ok({
let mut s = String::new();
s.push(value);
s.into()
})
}
#[cfg_attr(not(feature = "no-inline"), inline)]
fn serialize_str(self, value: &str) -> Result<Self::Ok> {
Ok(Cow::from(value.to_string()))
}
fn serialize_bytes(self, _value: &[u8]) -> Result<Self::Ok> {
Err(key_must_be_a_string())
}
fn serialize_unit(self) -> Result<Self::Ok> {
Err(key_must_be_a_string())
}
fn serialize_unit_struct(self, _name: &'static str) -> Result<Self::Ok> {
Err(key_must_be_a_string())
}
fn serialize_newtype_variant<T>(
self,
_name: &'static str,
_variant_index: u32,
_variant: &'static str,
_value: &T,
) -> Result<Self::Ok>
where
T: ?Sized + Serialize,
{
Err(key_must_be_a_string())
}
fn serialize_none(self) -> Result<Self::Ok> {
Err(key_must_be_a_string())
}
fn serialize_some<T>(self, _value: &T) -> Result<Self::Ok>
where
T: ?Sized + Serialize,
{
Err(key_must_be_a_string())
}
fn serialize_seq(self, _len: Option<usize>) -> Result<Self::SerializeSeq> {
Err(key_must_be_a_string())
}
fn serialize_tuple(self, _len: usize) -> Result<Self::SerializeTuple> {
Err(key_must_be_a_string())
}
fn serialize_tuple_struct(
self,
_name: &'static str,
_len: usize,
) -> Result<Self::SerializeTupleStruct> {
Err(key_must_be_a_string())
}
fn serialize_tuple_variant(
self,
_name: &'static str,
_variant_index: u32,
_variant: &'static str,
_len: usize,
) -> Result<Self::SerializeTupleVariant> {
Err(key_must_be_a_string())
}
fn serialize_map(self, _len: Option<usize>) -> Result<Self::SerializeMap> {
Err(key_must_be_a_string())
}
fn serialize_struct(self, _name: &'static str, _len: usize) -> Result<Self::SerializeStruct> {
Err(key_must_be_a_string())
}
fn serialize_struct_variant(
self,
_name: &'static str,
_variant_index: u32,
_variant: &'static str,
_len: usize,
) -> Result<Self::SerializeStructVariant> {
Err(key_must_be_a_string())
}
}
impl<'se> serde::ser::SerializeStruct for SerializeMap<'se> {
type Ok = Value<'se>;
type Error = Error;
fn serialize_field<T>(&mut self, key: &'static str, value: &T) -> Result<()>
where
T: ?Sized + Serialize,
{
stry!(serde::ser::SerializeMap::serialize_key(self, key));
serde::ser::SerializeMap::serialize_value(self, value)
}
fn end(self) -> Result<Value<'se>> {
serde::ser::SerializeMap::end(self)
}
}
impl<'se> serde::ser::SerializeStructVariant for SerializeStructVariant<'se> {
type Ok = Value<'se>;
type Error = Error;
fn serialize_field<T>(&mut self, key: &'static str, value: &T) -> Result<()>
where
T: ?Sized + Serialize,
{
self.map.insert(key.into(), stry!(to_value(value)));
Ok(())
}
fn end(self) -> Result<Value<'se>> {
let mut object = Object::with_capacity_and_hasher(1, ObjectHasher::default());
object.insert_nocheck(self.name.into(), self.map.into());
Ok(Value::Object(Box::new(object)))
}
}
#[cfg(test)]
mod test {
#![allow(clippy::ignored_unit_patterns)]
use super::Value;
use crate::{borrowed::Object, serde::from_slice, ObjectHasher};
use serde::{Deserialize, Serialize};
use value_trait::StaticNode;
#[test]
fn null() {
let v = Value::Static(crate::StaticNode::Null);
let s = serde_json::to_string(&v).expect("Failed to serialize");
assert_eq!(s, "null");
}
#[test]
fn bool_true() {
let v = Value::Static(StaticNode::Bool(true));
let s = serde_json::to_string(&v).expect("Failed to serialize");
assert_eq!(s, "true");
}
#[test]
fn bool_false() {
let v = Value::Static(StaticNode::Bool(false));
let s = serde_json::to_string(&v).expect("Failed to serialize");
assert_eq!(s, "false");
}
#[test]
fn float() {
let v = Value::Static(StaticNode::from(1.0));
let s = serde_json::to_string(&v).expect("Failed to serialize");
assert_eq!(s, "1.0");
}
#[test]
fn stringlike() {
let v = Value::from("snot".to_string());
let s = serde_json::to_string(&v).expect("Failed to serialize");
assert_eq!(s, "\"snot\"");
let v = Value::from("snot");
let s = serde_json::to_string(&v).expect("Failed to serialize");
assert_eq!(s, "\"snot\"");
}
#[test]
fn int() {
let v = Value::Static(StaticNode::I64(42));
let s = serde_json::to_string(&v).expect("Failed to serialize");
assert_eq!(s, "42");
}
#[test]
fn arr() {
let v = Value::Array(Box::new(vec![
Value::Static(StaticNode::I64(42)),
Value::Static(StaticNode::I64(23)),
]));
let s = serde_json::to_string(&v).expect("Failed to serialize");
assert_eq!(s, "[42,23]");
}
#[test]
fn map() {
let mut m = Object::with_capacity_and_hasher(2, ObjectHasher::default());
m.insert("a".into(), Value::from(42));
m.insert("b".into(), Value::from(23));
let v = Value::Object(Box::new(m));
let mut s = serde_json::to_vec(&v).expect("Failed to serialize");
let v2: Value = from_slice(&mut s).expect("failed to deserialize");
assert_eq!(v, v2);
}
#[derive(Deserialize, Serialize, PartialEq, Debug, Default)]
struct Map {
key: u32,
}
#[allow(clippy::struct_field_names)]
#[derive(Deserialize, Serialize, PartialEq, Debug, Default)]
struct Obj {
v_i128: i128,
v_i64: i64,
v_i32: i32,
v_i16: i16,
v_i8: i8,
v_u128: u128,
v_u64: u64,
v_usize: usize,
v_u32: u32,
v_u16: u16,
v_u8: u8,
v_bool: bool,
v_str: String,
v_char: char,
v_map: Map,
v_arr: Vec<usize>,
v_null: (),
}
#[test]
fn from_slice_to_object() {
let o = Obj::default();
let mut vec = serde_json::to_vec(&o).expect("to_vec");
let vec2 = crate::serde::to_vec(&o).expect("to_vec");
assert_eq!(vec, vec2);
println!("{}", serde_json::to_string_pretty(&o).expect("json"));
let de: Obj = from_slice(&mut vec).expect("from_slice");
assert_eq!(o, de);
}
#[cfg(not(target_arch = "wasm32"))]
use proptest::prelude::*;
#[cfg(not(target_arch = "wasm32"))]
prop_compose! {
fn obj_case()(
v_i128 in any::<i64>().prop_map(i128::from),
v_i64 in any::<i64>(),
v_i32 in any::<i32>(),
v_i16 in any::<i16>(),
v_i8 in any::<i8>(),
v_u128 in any::<u64>().prop_map(u128::from),
v_u64 in any::<u64>(),
v_usize in any::<u32>().prop_map(|v| v as usize),
v_u32 in any::<u32>(),
v_u16 in any::<u16>(),
v_u8 in any::<u8>(),
v_bool in any::<bool>(),
v_str in ".*",
v_char in any::<char>(),
) -> Obj {
Obj {
v_i128,
v_i64,
v_i32,
v_i16,
v_i8,
v_u128,
v_u64,
v_usize,
v_u32,
v_u16,
v_u8,
v_bool,
v_str,
v_char,
..Obj::default()
}
}
}
#[cfg(not(target_arch = "wasm32"))]
proptest! {
#![proptest_config(ProptestConfig {
.. ProptestConfig::default()
})]
#[test]
fn prop_deserialize_obj(obj in obj_case()) {
let mut vec = serde_json::to_vec(&obj).expect("to_vec");
let vec1 = vec.clone();
let vec2 = vec.clone();
println!("{}", serde_json::to_string_pretty(&obj).expect("json"));
let de: Obj = from_slice(&mut vec).expect("from_slice");
prop_assert_eq!(&obj, &de);
let borrowed: crate::BorrowedValue = serde_json::from_slice(& vec1).expect("from_slice");
let owned: crate::OwnedValue = serde_json::from_slice(& vec2).expect("from_slice");
prop_assert_eq!(&borrowed, &owned);
let de: Obj = Obj::deserialize(borrowed).expect("deserialize");
prop_assert_eq!(&obj, &de);
let de: Obj = Obj::deserialize(owned).expect("deserialize");
prop_assert_eq!(&obj, &de);
}
}
}