use serde::Serialize;
use super::NamelistError;
use crate::namelist::{Array, Item, LiteralConstant};
use super::derived::DerivedSerializer;
pub struct SerializeItem;
impl serde::ser::Serializer for SerializeItem {
type Ok = Item;
type Error = NamelistError;
type SerializeSeq = SerializeList;
type SerializeTuple = SerializeList;
type SerializeTupleStruct = SerializeList;
type SerializeTupleVariant = serde::ser::Impossible<Item, NamelistError>;
type SerializeMap = DerivedSerializer;
type SerializeStruct = DerivedSerializer;
type SerializeStructVariant = serde::ser::Impossible<Item, NamelistError>;
fn serialize_bool(self, v: bool) -> Result<Self::Ok, Self::Error> {
Ok(Item::Literal(LiteralConstant::Bool(v)))
}
fn serialize_i8(self, v: i8) -> Result<Self::Ok, Self::Error> {
Ok(Item::Literal(LiteralConstant::Int(v.into())))
}
fn serialize_i16(self, v: i16) -> Result<Self::Ok, Self::Error> {
Ok(Item::Literal(LiteralConstant::Int(v.into())))
}
fn serialize_i32(self, v: i32) -> Result<Self::Ok, Self::Error> {
Ok(Item::Literal(LiteralConstant::Int(v.into())))
}
fn serialize_i64(self, v: i64) -> Result<Self::Ok, Self::Error> {
Ok(Item::Literal(LiteralConstant::Int(v)))
}
fn serialize_u8(self, v: u8) -> Result<Self::Ok, Self::Error> {
Ok(Item::Literal(LiteralConstant::Int(v.into())))
}
fn serialize_u16(self, v: u16) -> Result<Self::Ok, Self::Error> {
Ok(Item::Literal(LiteralConstant::Int(v.into())))
}
fn serialize_u32(self, v: u32) -> Result<Self::Ok, Self::Error> {
Ok(Item::Literal(LiteralConstant::Int(v.into())))
}
fn serialize_u64(self, v: u64) -> Result<Self::Ok, Self::Error> {
self.serialize_u32(
v.try_into()
.map_err(|_| NamelistError::UnsupportedSerialization)?,
)
}
fn serialize_f32(self, v: f32) -> Result<Self::Ok, Self::Error> {
Ok(Item::Literal(LiteralConstant::Float(v.into())))
}
fn serialize_f64(self, v: f64) -> Result<Self::Ok, Self::Error> {
Ok(Item::Literal(LiteralConstant::Float(v)))
}
fn serialize_char(self, v: char) -> Result<Self::Ok, Self::Error> {
Ok(LiteralConstant::String(v.into()).into_item())
}
fn serialize_str(self, v: &str) -> Result<Self::Ok, Self::Error> {
Ok(LiteralConstant::String(v.to_owned()).into_item())
}
fn serialize_bytes(self, _v: &[u8]) -> Result<Self::Ok, Self::Error> {
Err(NamelistError::UnsupportedSerialization)
}
fn serialize_none(self) -> Result<Self::Ok, Self::Error> {
Ok(Item::Literal(LiteralConstant::Null))
}
fn serialize_some<T: ?Sized>(self, v: &T) -> Result<Self::Ok, Self::Error>
where
T: serde::Serialize,
{
v.serialize(self)
}
fn serialize_unit(self) -> Result<Self::Ok, Self::Error> {
self.serialize_none()
}
fn serialize_unit_struct(self, _name: &'static str) -> Result<Self::Ok, Self::Error> {
self.serialize_unit()
}
fn serialize_unit_variant(
self,
_name: &'static str,
_variant_index: u32,
variant: &'static str,
) -> Result<Self::Ok, Self::Error> {
self.serialize_str(variant)
}
fn serialize_newtype_struct<T: ?Sized>(
self,
_name: &'static str,
value: &T,
) -> Result<Self::Ok, Self::Error>
where
T: serde::Serialize,
{
value.serialize(self)
}
fn serialize_newtype_variant<T: ?Sized>(
self,
_name: &'static str,
_variant_index: u32,
_variant: &'static str,
_value: &T,
) -> Result<Self::Ok, Self::Error>
where
T: serde::Serialize,
{
Err(NamelistError::UnsupportedSerialization)
}
fn serialize_seq(self, _len: Option<usize>) -> Result<Self::SerializeSeq, Self::Error> {
Ok(SerializeList { list: Vec::new() })
}
fn serialize_tuple(self, len: usize) -> Result<Self::SerializeTuple, Self::Error> {
self.serialize_seq(Some(len))
}
fn serialize_tuple_struct(
self,
_name: &'static str,
len: usize,
) -> Result<Self::SerializeTupleStruct, Self::Error> {
self.serialize_seq(Some(len))
}
fn serialize_tuple_variant(
self,
_name: &'static str,
_variant_index: u32,
_variant: &'static str,
_len: usize,
) -> Result<Self::SerializeTupleVariant, Self::Error> {
Err(NamelistError::UnsupportedSerialization)
}
fn serialize_map(self, _len: Option<usize>) -> Result<Self::SerializeMap, Self::Error> {
Ok(DerivedSerializer::new())
}
fn serialize_struct(
self,
_name: &'static str,
len: usize,
) -> Result<Self::SerializeStruct, Self::Error> {
self.serialize_map(Some(len))
}
fn serialize_struct_variant(
self,
_name: &'static str,
_variant_index: u32,
_variant: &'static str,
_len: usize,
) -> Result<Self::SerializeStructVariant, Self::Error> {
Err(NamelistError::UnsupportedSerialization)
}
}
pub struct SerializeList {
list: Vec<(usize, LiteralConstant)>,
}
impl SerializeList {
fn is_type_compatible(&self, lit: &LiteralConstant) -> bool {
for (_, other_lit) in self.list.iter() {
if let Some(b) = other_lit.is_type_compatible(lit) {
return b;
}
}
true
}
}
impl serde::ser::SerializeSeq for SerializeList {
type Ok = Item;
type Error = NamelistError;
fn serialize_element<T: ?Sized>(&mut self, value: &T) -> Result<(), Self::Error>
where
T: serde::Serialize,
{
let lit = if let Item::Literal(lit) = value.serialize(SerializeItem)? {
if self.is_type_compatible(&lit) {
Ok(lit)
} else {
Err(NamelistError::UnsupportedSerialization)
}
} else {
Err(NamelistError::UnsupportedSerialization)
}?;
self.list.push((1, lit));
Ok(())
}
fn end(self) -> Result<Self::Ok, Self::Error> {
Ok(Item::Array(Array::List(self.list)))
}
}
impl serde::ser::SerializeTuple for SerializeList {
type Ok = Item;
type Error = NamelistError;
fn serialize_element<T: ?Sized>(&mut self, value: &T) -> Result<(), Self::Error>
where
T: serde::Serialize,
{
let lit = if let Item::Literal(lit) = value.serialize(SerializeItem)? {
if self.is_type_compatible(&lit) {
Ok(lit)
} else {
Err(NamelistError::UnsupportedSerialization)
}
} else {
Err(NamelistError::UnsupportedSerialization)
}?;
self.list.push((1, lit));
Ok(())
}
fn end(self) -> Result<Self::Ok, Self::Error> {
Ok(Item::Array(Array::List(self.list)))
}
}
impl serde::ser::SerializeTupleStruct for SerializeList {
type Ok = Item;
type Error = NamelistError;
fn serialize_field<T: ?Sized>(&mut self, value: &T) -> Result<(), Self::Error>
where
T: Serialize,
{
let lit = if let Item::Literal(lit) = value.serialize(SerializeItem)? {
if self.is_type_compatible(&lit) {
Err(NamelistError::UnsupportedSerialization)
} else {
Ok(lit)
}
} else {
Err(NamelistError::UnsupportedSerialization)
}?;
self.list.push((1, lit));
Ok(())
}
fn end(self) -> Result<Self::Ok, Self::Error> {
Ok(Item::Array(Array::List(self.list)))
}
}