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#[derive(Copy, Clone, PartialEq, Eq, Debug)]
pub(crate) enum SerializationStrategy {
Value,
Table,
ArrayOfTables,
Skip,
Unknown,
}
impl<T> From<&T> for SerializationStrategy
where
T: serde_core::ser::Serialize + ?Sized,
{
fn from(value: &T) -> Self {
value.serialize(WalkValue).unwrap_err()
}
}
impl serde_core::ser::Error for SerializationStrategy {
fn custom<T>(_msg: T) -> Self
where
T: core::fmt::Display,
{
Self::Unknown
}
}
impl core::fmt::Display for SerializationStrategy {
fn fmt(&self, f: &mut core::fmt::Formatter<'_>) -> core::fmt::Result {
"error".fmt(f)
}
}
#[cfg(feature = "std")]
impl std::error::Error for SerializationStrategy {}
#[cfg(not(feature = "std"))]
impl serde_core::de::StdError for SerializationStrategy {}
struct WalkValue;
impl serde_core::ser::Serializer for WalkValue {
type Ok = core::convert::Infallible;
type Error = SerializationStrategy;
type SerializeSeq = ArrayWalkValue;
type SerializeTuple = ArrayWalkValue;
type SerializeTupleStruct = ArrayWalkValue;
type SerializeTupleVariant = serde_core::ser::Impossible<Self::Ok, Self::Error>;
type SerializeMap = serde_core::ser::Impossible<Self::Ok, Self::Error>;
type SerializeStruct = StructWalkValue;
type SerializeStructVariant = serde_core::ser::Impossible<Self::Ok, Self::Error>;
fn serialize_bool(self, _v: bool) -> Result<Self::Ok, Self::Error> {
Err(SerializationStrategy::Value)
}
fn serialize_i8(self, _v: i8) -> Result<Self::Ok, Self::Error> {
Err(SerializationStrategy::Value)
}
fn serialize_i16(self, _v: i16) -> Result<Self::Ok, Self::Error> {
Err(SerializationStrategy::Value)
}
fn serialize_i32(self, _v: i32) -> Result<Self::Ok, Self::Error> {
Err(SerializationStrategy::Value)
}
fn serialize_i64(self, _v: i64) -> Result<Self::Ok, Self::Error> {
Err(SerializationStrategy::Value)
}
fn serialize_i128(self, _v: i128) -> Result<Self::Ok, Self::Error> {
Err(SerializationStrategy::Value)
}
fn serialize_u8(self, _v: u8) -> Result<Self::Ok, Self::Error> {
Err(SerializationStrategy::Value)
}
fn serialize_u16(self, _v: u16) -> Result<Self::Ok, Self::Error> {
Err(SerializationStrategy::Value)
}
fn serialize_u32(self, _v: u32) -> Result<Self::Ok, Self::Error> {
Err(SerializationStrategy::Value)
}
fn serialize_u64(self, _v: u64) -> Result<Self::Ok, Self::Error> {
Err(SerializationStrategy::Value)
}
fn serialize_u128(self, _v: u128) -> Result<Self::Ok, Self::Error> {
Err(SerializationStrategy::Value)
}
fn serialize_f32(self, _v: f32) -> Result<Self::Ok, Self::Error> {
Err(SerializationStrategy::Value)
}
fn serialize_f64(self, _v: f64) -> Result<Self::Ok, Self::Error> {
Err(SerializationStrategy::Value)
}
fn serialize_char(self, _v: char) -> Result<Self::Ok, Self::Error> {
Err(SerializationStrategy::Value)
}
fn serialize_str(self, _v: &str) -> Result<Self::Ok, Self::Error> {
Err(SerializationStrategy::Value)
}
fn serialize_bytes(self, _v: &[u8]) -> Result<Self::Ok, Self::Error> {
Err(SerializationStrategy::Value)
}
fn serialize_none(self) -> Result<Self::Ok, Self::Error> {
Err(SerializationStrategy::Skip)
}
fn serialize_some<T>(self, v: &T) -> Result<Self::Ok, Self::Error>
where
T: serde_core::ser::Serialize + ?Sized,
{
v.serialize(self)
}
fn serialize_unit(self) -> Result<Self::Ok, Self::Error> {
Err(SerializationStrategy::Value)
}
fn serialize_unit_struct(self, _name: &'static str) -> Result<Self::Ok, Self::Error> {
Err(SerializationStrategy::Value)
}
fn serialize_unit_variant(
self,
_name: &'static str,
_variant_index: u32,
_variant: &'static str,
) -> Result<Self::Ok, Self::Error> {
Err(SerializationStrategy::Value)
}
fn serialize_newtype_struct<T>(
self,
_name: &'static str,
v: &T,
) -> Result<Self::Ok, Self::Error>
where
T: serde_core::ser::Serialize + ?Sized,
{
v.serialize(self)
}
fn serialize_newtype_variant<T>(
self,
_name: &'static str,
_variant_index: u32,
_variant: &'static str,
_value: &T,
) -> Result<Self::Ok, Self::Error>
where
T: serde_core::ser::Serialize + ?Sized,
{
Err(SerializationStrategy::Table)
}
fn serialize_seq(self, _len: Option<usize>) -> Result<Self::SerializeSeq, Self::Error> {
Ok(ArrayWalkValue::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(SerializationStrategy::Table)
}
fn serialize_map(self, _len: Option<usize>) -> Result<Self::SerializeMap, Self::Error> {
Err(SerializationStrategy::Table)
}
fn serialize_struct(
self,
name: &'static str,
_len: usize,
) -> Result<Self::SerializeStruct, Self::Error> {
if toml_datetime::ser::is_datetime(name) {
Ok(StructWalkValue)
} else {
Err(SerializationStrategy::Table)
}
}
fn serialize_struct_variant(
self,
_name: &'static str,
_variant_index: u32,
_variant: &'static str,
_len: usize,
) -> Result<Self::SerializeStructVariant, Self::Error> {
Err(SerializationStrategy::Table)
}
}
#[doc(hidden)]
pub(crate) struct ArrayWalkValue {
is_empty: bool,
}
impl ArrayWalkValue {
fn new() -> Self {
Self { is_empty: true }
}
fn serialize_element<T>(&mut self, value: &T) -> Result<(), SerializationStrategy>
where
T: serde_core::ser::Serialize + ?Sized,
{
self.is_empty = false;
match SerializationStrategy::from(value) {
SerializationStrategy::Value
| SerializationStrategy::ArrayOfTables
| SerializationStrategy::Unknown
| SerializationStrategy::Skip => Err(SerializationStrategy::Value),
SerializationStrategy::Table => Ok(()),
}
}
fn end(self) -> Result<core::convert::Infallible, SerializationStrategy> {
if self.is_empty {
Err(SerializationStrategy::Value)
} else {
Err(SerializationStrategy::ArrayOfTables)
}
}
}
impl serde_core::ser::SerializeSeq for ArrayWalkValue {
type Ok = core::convert::Infallible;
type Error = SerializationStrategy;
fn serialize_element<T>(&mut self, value: &T) -> Result<(), Self::Error>
where
T: serde_core::ser::Serialize + ?Sized,
{
self.serialize_element(value)
}
fn end(self) -> Result<Self::Ok, Self::Error> {
self.end()
}
}
impl serde_core::ser::SerializeTuple for ArrayWalkValue {
type Ok = core::convert::Infallible;
type Error = SerializationStrategy;
fn serialize_element<T>(&mut self, value: &T) -> Result<(), Self::Error>
where
T: serde_core::ser::Serialize + ?Sized,
{
self.serialize_element(value)
}
fn end(self) -> Result<Self::Ok, Self::Error> {
self.end()
}
}
impl serde_core::ser::SerializeTupleStruct for ArrayWalkValue {
type Ok = core::convert::Infallible;
type Error = SerializationStrategy;
fn serialize_field<T>(&mut self, value: &T) -> Result<(), Self::Error>
where
T: serde_core::ser::Serialize + ?Sized,
{
self.serialize_element(value)
}
fn end(self) -> Result<Self::Ok, Self::Error> {
self.end()
}
}
pub(crate) struct StructWalkValue;
impl serde_core::ser::SerializeMap for StructWalkValue {
type Ok = core::convert::Infallible;
type Error = SerializationStrategy;
fn serialize_key<T>(&mut self, _input: &T) -> Result<(), Self::Error>
where
T: serde_core::ser::Serialize + ?Sized,
{
Ok(())
}
fn serialize_value<T>(&mut self, _value: &T) -> Result<(), Self::Error>
where
T: serde_core::ser::Serialize + ?Sized,
{
Ok(())
}
fn end(self) -> Result<Self::Ok, Self::Error> {
// is date time
Err(SerializationStrategy::Value)
}
}
impl serde_core::ser::SerializeStruct for StructWalkValue {
type Ok = core::convert::Infallible;
type Error = SerializationStrategy;
fn serialize_field<T>(&mut self, _key: &'static str, _value: &T) -> Result<(), Self::Error>
where
T: serde_core::ser::Serialize + ?Sized,
{
Ok(())
}
fn end(self) -> Result<Self::Ok, Self::Error> {
// is date time
Err(SerializationStrategy::Value)
}
}