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-rw-r--r--vendor/serde/src/private/ser.rs1385
1 files changed, 1385 insertions, 0 deletions
diff --git a/vendor/serde/src/private/ser.rs b/vendor/serde/src/private/ser.rs
new file mode 100644
index 0000000..50bcb25
--- /dev/null
+++ b/vendor/serde/src/private/ser.rs
@@ -0,0 +1,1385 @@
+use crate::lib::*;
+
+use crate::ser::{self, Impossible, Serialize, SerializeMap, SerializeStruct, Serializer};
+
+#[cfg(any(feature = "std", feature = "alloc"))]
+use self::content::{
+ Content, ContentSerializer, SerializeStructVariantAsMapValue, SerializeTupleVariantAsMapValue,
+};
+
+/// Used to check that serde(getter) attributes return the expected type.
+/// Not public API.
+pub fn constrain<T: ?Sized>(t: &T) -> &T {
+ t
+}
+
+/// Not public API.
+pub fn serialize_tagged_newtype<S, T>(
+ serializer: S,
+ type_ident: &'static str,
+ variant_ident: &'static str,
+ tag: &'static str,
+ variant_name: &'static str,
+ value: &T,
+) -> Result<S::Ok, S::Error>
+where
+ S: Serializer,
+ T: Serialize,
+{
+ value.serialize(TaggedSerializer {
+ type_ident,
+ variant_ident,
+ tag,
+ variant_name,
+ delegate: serializer,
+ })
+}
+
+struct TaggedSerializer<S> {
+ type_ident: &'static str,
+ variant_ident: &'static str,
+ tag: &'static str,
+ variant_name: &'static str,
+ delegate: S,
+}
+
+enum Unsupported {
+ Boolean,
+ Integer,
+ Float,
+ Char,
+ String,
+ ByteArray,
+ Optional,
+ #[cfg(any(feature = "std", feature = "alloc"))]
+ UnitStruct,
+ Sequence,
+ Tuple,
+ TupleStruct,
+ Enum,
+}
+
+impl Display for Unsupported {
+ fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
+ match *self {
+ Unsupported::Boolean => formatter.write_str("a boolean"),
+ Unsupported::Integer => formatter.write_str("an integer"),
+ Unsupported::Float => formatter.write_str("a float"),
+ Unsupported::Char => formatter.write_str("a char"),
+ Unsupported::String => formatter.write_str("a string"),
+ Unsupported::ByteArray => formatter.write_str("a byte array"),
+ Unsupported::Optional => formatter.write_str("an optional"),
+ #[cfg(any(feature = "std", feature = "alloc"))]
+ Unsupported::UnitStruct => formatter.write_str("unit struct"),
+ Unsupported::Sequence => formatter.write_str("a sequence"),
+ Unsupported::Tuple => formatter.write_str("a tuple"),
+ Unsupported::TupleStruct => formatter.write_str("a tuple struct"),
+ Unsupported::Enum => formatter.write_str("an enum"),
+ }
+ }
+}
+
+impl<S> TaggedSerializer<S>
+where
+ S: Serializer,
+{
+ fn bad_type(self, what: Unsupported) -> S::Error {
+ ser::Error::custom(format_args!(
+ "cannot serialize tagged newtype variant {}::{} containing {}",
+ self.type_ident, self.variant_ident, what
+ ))
+ }
+}
+
+impl<S> Serializer for TaggedSerializer<S>
+where
+ S: Serializer,
+{
+ type Ok = S::Ok;
+ type Error = S::Error;
+
+ type SerializeSeq = Impossible<S::Ok, S::Error>;
+ type SerializeTuple = Impossible<S::Ok, S::Error>;
+ type SerializeTupleStruct = Impossible<S::Ok, S::Error>;
+ type SerializeMap = S::SerializeMap;
+ type SerializeStruct = S::SerializeStruct;
+
+ #[cfg(not(any(feature = "std", feature = "alloc")))]
+ type SerializeTupleVariant = Impossible<S::Ok, S::Error>;
+ #[cfg(any(feature = "std", feature = "alloc"))]
+ type SerializeTupleVariant = SerializeTupleVariantAsMapValue<S::SerializeMap>;
+
+ #[cfg(not(any(feature = "std", feature = "alloc")))]
+ type SerializeStructVariant = Impossible<S::Ok, S::Error>;
+ #[cfg(any(feature = "std", feature = "alloc"))]
+ type SerializeStructVariant = SerializeStructVariantAsMapValue<S::SerializeMap>;
+
+ fn serialize_bool(self, _: bool) -> Result<Self::Ok, Self::Error> {
+ Err(self.bad_type(Unsupported::Boolean))
+ }
+
+ fn serialize_i8(self, _: i8) -> Result<Self::Ok, Self::Error> {
+ Err(self.bad_type(Unsupported::Integer))
+ }
+
+ fn serialize_i16(self, _: i16) -> Result<Self::Ok, Self::Error> {
+ Err(self.bad_type(Unsupported::Integer))
+ }
+
+ fn serialize_i32(self, _: i32) -> Result<Self::Ok, Self::Error> {
+ Err(self.bad_type(Unsupported::Integer))
+ }
+
+ fn serialize_i64(self, _: i64) -> Result<Self::Ok, Self::Error> {
+ Err(self.bad_type(Unsupported::Integer))
+ }
+
+ fn serialize_u8(self, _: u8) -> Result<Self::Ok, Self::Error> {
+ Err(self.bad_type(Unsupported::Integer))
+ }
+
+ fn serialize_u16(self, _: u16) -> Result<Self::Ok, Self::Error> {
+ Err(self.bad_type(Unsupported::Integer))
+ }
+
+ fn serialize_u32(self, _: u32) -> Result<Self::Ok, Self::Error> {
+ Err(self.bad_type(Unsupported::Integer))
+ }
+
+ fn serialize_u64(self, _: u64) -> Result<Self::Ok, Self::Error> {
+ Err(self.bad_type(Unsupported::Integer))
+ }
+
+ fn serialize_f32(self, _: f32) -> Result<Self::Ok, Self::Error> {
+ Err(self.bad_type(Unsupported::Float))
+ }
+
+ fn serialize_f64(self, _: f64) -> Result<Self::Ok, Self::Error> {
+ Err(self.bad_type(Unsupported::Float))
+ }
+
+ fn serialize_char(self, _: char) -> Result<Self::Ok, Self::Error> {
+ Err(self.bad_type(Unsupported::Char))
+ }
+
+ fn serialize_str(self, _: &str) -> Result<Self::Ok, Self::Error> {
+ Err(self.bad_type(Unsupported::String))
+ }
+
+ fn serialize_bytes(self, _: &[u8]) -> Result<Self::Ok, Self::Error> {
+ Err(self.bad_type(Unsupported::ByteArray))
+ }
+
+ fn serialize_none(self) -> Result<Self::Ok, Self::Error> {
+ Err(self.bad_type(Unsupported::Optional))
+ }
+
+ fn serialize_some<T: ?Sized>(self, _: &T) -> Result<Self::Ok, Self::Error>
+ where
+ T: Serialize,
+ {
+ Err(self.bad_type(Unsupported::Optional))
+ }
+
+ fn serialize_unit(self) -> Result<Self::Ok, Self::Error> {
+ let mut map = tri!(self.delegate.serialize_map(Some(1)));
+ tri!(map.serialize_entry(self.tag, self.variant_name));
+ map.end()
+ }
+
+ fn serialize_unit_struct(self, _: &'static str) -> Result<Self::Ok, Self::Error> {
+ let mut map = tri!(self.delegate.serialize_map(Some(1)));
+ tri!(map.serialize_entry(self.tag, self.variant_name));
+ map.end()
+ }
+
+ fn serialize_unit_variant(
+ self,
+ _: &'static str,
+ _: u32,
+ inner_variant: &'static str,
+ ) -> Result<Self::Ok, Self::Error> {
+ let mut map = tri!(self.delegate.serialize_map(Some(2)));
+ tri!(map.serialize_entry(self.tag, self.variant_name));
+ tri!(map.serialize_entry(inner_variant, &()));
+ map.end()
+ }
+
+ 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: ?Sized>(
+ self,
+ _: &'static str,
+ _: u32,
+ inner_variant: &'static str,
+ inner_value: &T,
+ ) -> Result<Self::Ok, Self::Error>
+ where
+ T: Serialize,
+ {
+ let mut map = tri!(self.delegate.serialize_map(Some(2)));
+ tri!(map.serialize_entry(self.tag, self.variant_name));
+ tri!(map.serialize_entry(inner_variant, inner_value));
+ map.end()
+ }
+
+ fn serialize_seq(self, _: Option<usize>) -> Result<Self::SerializeSeq, Self::Error> {
+ Err(self.bad_type(Unsupported::Sequence))
+ }
+
+ fn serialize_tuple(self, _: usize) -> Result<Self::SerializeTuple, Self::Error> {
+ Err(self.bad_type(Unsupported::Tuple))
+ }
+
+ fn serialize_tuple_struct(
+ self,
+ _: &'static str,
+ _: usize,
+ ) -> Result<Self::SerializeTupleStruct, Self::Error> {
+ Err(self.bad_type(Unsupported::TupleStruct))
+ }
+
+ #[cfg(not(any(feature = "std", feature = "alloc")))]
+ fn serialize_tuple_variant(
+ self,
+ _: &'static str,
+ _: u32,
+ _: &'static str,
+ _: usize,
+ ) -> Result<Self::SerializeTupleVariant, Self::Error> {
+ // Lack of push-based serialization means we need to buffer the content
+ // of the tuple variant, so it requires std.
+ Err(self.bad_type(Unsupported::Enum))
+ }
+
+ #[cfg(any(feature = "std", feature = "alloc"))]
+ fn serialize_tuple_variant(
+ self,
+ _: &'static str,
+ _: u32,
+ inner_variant: &'static str,
+ len: usize,
+ ) -> Result<Self::SerializeTupleVariant, Self::Error> {
+ let mut map = tri!(self.delegate.serialize_map(Some(2)));
+ tri!(map.serialize_entry(self.tag, self.variant_name));
+ tri!(map.serialize_key(inner_variant));
+ Ok(SerializeTupleVariantAsMapValue::new(
+ map,
+ inner_variant,
+ len,
+ ))
+ }
+
+ fn serialize_map(self, len: Option<usize>) -> Result<Self::SerializeMap, Self::Error> {
+ let mut map = tri!(self.delegate.serialize_map(len.map(|len| len + 1)));
+ tri!(map.serialize_entry(self.tag, self.variant_name));
+ Ok(map)
+ }
+
+ fn serialize_struct(
+ self,
+ name: &'static str,
+ len: usize,
+ ) -> Result<Self::SerializeStruct, Self::Error> {
+ let mut state = tri!(self.delegate.serialize_struct(name, len + 1));
+ tri!(state.serialize_field(self.tag, self.variant_name));
+ Ok(state)
+ }
+
+ #[cfg(not(any(feature = "std", feature = "alloc")))]
+ fn serialize_struct_variant(
+ self,
+ _: &'static str,
+ _: u32,
+ _: &'static str,
+ _: usize,
+ ) -> Result<Self::SerializeStructVariant, Self::Error> {
+ // Lack of push-based serialization means we need to buffer the content
+ // of the struct variant, so it requires std.
+ Err(self.bad_type(Unsupported::Enum))
+ }
+
+ #[cfg(any(feature = "std", feature = "alloc"))]
+ fn serialize_struct_variant(
+ self,
+ _: &'static str,
+ _: u32,
+ inner_variant: &'static str,
+ len: usize,
+ ) -> Result<Self::SerializeStructVariant, Self::Error> {
+ let mut map = tri!(self.delegate.serialize_map(Some(2)));
+ tri!(map.serialize_entry(self.tag, self.variant_name));
+ tri!(map.serialize_key(inner_variant));
+ Ok(SerializeStructVariantAsMapValue::new(
+ map,
+ inner_variant,
+ len,
+ ))
+ }
+
+ #[cfg(not(any(feature = "std", feature = "alloc")))]
+ fn collect_str<T: ?Sized>(self, _: &T) -> Result<Self::Ok, Self::Error>
+ where
+ T: Display,
+ {
+ Err(self.bad_type(Unsupported::String))
+ }
+}
+
+#[cfg(any(feature = "std", feature = "alloc"))]
+mod content {
+ use crate::lib::*;
+
+ use crate::ser::{self, Serialize, Serializer};
+
+ pub struct SerializeTupleVariantAsMapValue<M> {
+ map: M,
+ name: &'static str,
+ fields: Vec<Content>,
+ }
+
+ impl<M> SerializeTupleVariantAsMapValue<M> {
+ pub fn new(map: M, name: &'static str, len: usize) -> Self {
+ SerializeTupleVariantAsMapValue {
+ map,
+ name,
+ fields: Vec::with_capacity(len),
+ }
+ }
+ }
+
+ impl<M> ser::SerializeTupleVariant for SerializeTupleVariantAsMapValue<M>
+ where
+ M: ser::SerializeMap,
+ {
+ type Ok = M::Ok;
+ type Error = M::Error;
+
+ fn serialize_field<T: ?Sized>(&mut self, value: &T) -> Result<(), M::Error>
+ where
+ T: Serialize,
+ {
+ let value = tri!(value.serialize(ContentSerializer::<M::Error>::new()));
+ self.fields.push(value);
+ Ok(())
+ }
+
+ fn end(mut self) -> Result<M::Ok, M::Error> {
+ tri!(self
+ .map
+ .serialize_value(&Content::TupleStruct(self.name, self.fields)));
+ self.map.end()
+ }
+ }
+
+ pub struct SerializeStructVariantAsMapValue<M> {
+ map: M,
+ name: &'static str,
+ fields: Vec<(&'static str, Content)>,
+ }
+
+ impl<M> SerializeStructVariantAsMapValue<M> {
+ pub fn new(map: M, name: &'static str, len: usize) -> Self {
+ SerializeStructVariantAsMapValue {
+ map,
+ name,
+ fields: Vec::with_capacity(len),
+ }
+ }
+ }
+
+ impl<M> ser::SerializeStructVariant for SerializeStructVariantAsMapValue<M>
+ where
+ M: ser::SerializeMap,
+ {
+ type Ok = M::Ok;
+ type Error = M::Error;
+
+ fn serialize_field<T: ?Sized>(
+ &mut self,
+ key: &'static str,
+ value: &T,
+ ) -> Result<(), M::Error>
+ where
+ T: Serialize,
+ {
+ let value = tri!(value.serialize(ContentSerializer::<M::Error>::new()));
+ self.fields.push((key, value));
+ Ok(())
+ }
+
+ fn end(mut self) -> Result<M::Ok, M::Error> {
+ tri!(self
+ .map
+ .serialize_value(&Content::Struct(self.name, self.fields)));
+ self.map.end()
+ }
+ }
+
+ pub enum Content {
+ Bool(bool),
+
+ U8(u8),
+ U16(u16),
+ U32(u32),
+ U64(u64),
+
+ I8(i8),
+ I16(i16),
+ I32(i32),
+ I64(i64),
+
+ F32(f32),
+ F64(f64),
+
+ Char(char),
+ String(String),
+ Bytes(Vec<u8>),
+
+ None,
+ Some(Box<Content>),
+
+ Unit,
+ UnitStruct(&'static str),
+ UnitVariant(&'static str, u32, &'static str),
+ NewtypeStruct(&'static str, Box<Content>),
+ NewtypeVariant(&'static str, u32, &'static str, Box<Content>),
+
+ Seq(Vec<Content>),
+ Tuple(Vec<Content>),
+ TupleStruct(&'static str, Vec<Content>),
+ TupleVariant(&'static str, u32, &'static str, Vec<Content>),
+ Map(Vec<(Content, Content)>),
+ Struct(&'static str, Vec<(&'static str, Content)>),
+ StructVariant(
+ &'static str,
+ u32,
+ &'static str,
+ Vec<(&'static str, Content)>,
+ ),
+ }
+
+ impl Serialize for Content {
+ fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error>
+ where
+ S: Serializer,
+ {
+ match *self {
+ Content::Bool(b) => serializer.serialize_bool(b),
+ Content::U8(u) => serializer.serialize_u8(u),
+ Content::U16(u) => serializer.serialize_u16(u),
+ Content::U32(u) => serializer.serialize_u32(u),
+ Content::U64(u) => serializer.serialize_u64(u),
+ Content::I8(i) => serializer.serialize_i8(i),
+ Content::I16(i) => serializer.serialize_i16(i),
+ Content::I32(i) => serializer.serialize_i32(i),
+ Content::I64(i) => serializer.serialize_i64(i),
+ Content::F32(f) => serializer.serialize_f32(f),
+ Content::F64(f) => serializer.serialize_f64(f),
+ Content::Char(c) => serializer.serialize_char(c),
+ Content::String(ref s) => serializer.serialize_str(s),
+ Content::Bytes(ref b) => serializer.serialize_bytes(b),
+ Content::None => serializer.serialize_none(),
+ Content::Some(ref c) => serializer.serialize_some(&**c),
+ Content::Unit => serializer.serialize_unit(),
+ Content::UnitStruct(n) => serializer.serialize_unit_struct(n),
+ Content::UnitVariant(n, i, v) => serializer.serialize_unit_variant(n, i, v),
+ Content::NewtypeStruct(n, ref c) => serializer.serialize_newtype_struct(n, &**c),
+ Content::NewtypeVariant(n, i, v, ref c) => {
+ serializer.serialize_newtype_variant(n, i, v, &**c)
+ }
+ Content::Seq(ref elements) => elements.serialize(serializer),
+ Content::Tuple(ref elements) => {
+ use crate::ser::SerializeTuple;
+ let mut tuple = tri!(serializer.serialize_tuple(elements.len()));
+ for e in elements {
+ tri!(tuple.serialize_element(e));
+ }
+ tuple.end()
+ }
+ Content::TupleStruct(n, ref fields) => {
+ use crate::ser::SerializeTupleStruct;
+ let mut ts = tri!(serializer.serialize_tuple_struct(n, fields.len()));
+ for f in fields {
+ tri!(ts.serialize_field(f));
+ }
+ ts.end()
+ }
+ Content::TupleVariant(n, i, v, ref fields) => {
+ use crate::ser::SerializeTupleVariant;
+ let mut tv = tri!(serializer.serialize_tuple_variant(n, i, v, fields.len()));
+ for f in fields {
+ tri!(tv.serialize_field(f));
+ }
+ tv.end()
+ }
+ Content::Map(ref entries) => {
+ use crate::ser::SerializeMap;
+ let mut map = tri!(serializer.serialize_map(Some(entries.len())));
+ for (k, v) in entries {
+ tri!(map.serialize_entry(k, v));
+ }
+ map.end()
+ }
+ Content::Struct(n, ref fields) => {
+ use crate::ser::SerializeStruct;
+ let mut s = tri!(serializer.serialize_struct(n, fields.len()));
+ for &(k, ref v) in fields {
+ tri!(s.serialize_field(k, v));
+ }
+ s.end()
+ }
+ Content::StructVariant(n, i, v, ref fields) => {
+ use crate::ser::SerializeStructVariant;
+ let mut sv = tri!(serializer.serialize_struct_variant(n, i, v, fields.len()));
+ for &(k, ref v) in fields {
+ tri!(sv.serialize_field(k, v));
+ }
+ sv.end()
+ }
+ }
+ }
+ }
+
+ pub struct ContentSerializer<E> {
+ error: PhantomData<E>,
+ }
+
+ impl<E> ContentSerializer<E> {
+ pub fn new() -> Self {
+ ContentSerializer { error: PhantomData }
+ }
+ }
+
+ impl<E> Serializer for ContentSerializer<E>
+ where
+ E: ser::Error,
+ {
+ type Ok = Content;
+ type Error = E;
+
+ type SerializeSeq = SerializeSeq<E>;
+ type SerializeTuple = SerializeTuple<E>;
+ type SerializeTupleStruct = SerializeTupleStruct<E>;
+ type SerializeTupleVariant = SerializeTupleVariant<E>;
+ type SerializeMap = SerializeMap<E>;
+ type SerializeStruct = SerializeStruct<E>;
+ type SerializeStructVariant = SerializeStructVariant<E>;
+
+ fn serialize_bool(self, v: bool) -> Result<Content, E> {
+ Ok(Content::Bool(v))
+ }
+
+ fn serialize_i8(self, v: i8) -> Result<Content, E> {
+ Ok(Content::I8(v))
+ }
+
+ fn serialize_i16(self, v: i16) -> Result<Content, E> {
+ Ok(Content::I16(v))
+ }
+
+ fn serialize_i32(self, v: i32) -> Result<Content, E> {
+ Ok(Content::I32(v))
+ }
+
+ fn serialize_i64(self, v: i64) -> Result<Content, E> {
+ Ok(Content::I64(v))
+ }
+
+ fn serialize_u8(self, v: u8) -> Result<Content, E> {
+ Ok(Content::U8(v))
+ }
+
+ fn serialize_u16(self, v: u16) -> Result<Content, E> {
+ Ok(Content::U16(v))
+ }
+
+ fn serialize_u32(self, v: u32) -> Result<Content, E> {
+ Ok(Content::U32(v))
+ }
+
+ fn serialize_u64(self, v: u64) -> Result<Content, E> {
+ Ok(Content::U64(v))
+ }
+
+ fn serialize_f32(self, v: f32) -> Result<Content, E> {
+ Ok(Content::F32(v))
+ }
+
+ fn serialize_f64(self, v: f64) -> Result<Content, E> {
+ Ok(Content::F64(v))
+ }
+
+ fn serialize_char(self, v: char) -> Result<Content, E> {
+ Ok(Content::Char(v))
+ }
+
+ fn serialize_str(self, value: &str) -> Result<Content, E> {
+ Ok(Content::String(value.to_owned()))
+ }
+
+ fn serialize_bytes(self, value: &[u8]) -> Result<Content, E> {
+ Ok(Content::Bytes(value.to_owned()))
+ }
+
+ fn serialize_none(self) -> Result<Content, E> {
+ Ok(Content::None)
+ }
+
+ fn serialize_some<T: ?Sized>(self, value: &T) -> Result<Content, E>
+ where
+ T: Serialize,
+ {
+ Ok(Content::Some(Box::new(tri!(value.serialize(self)))))
+ }
+
+ fn serialize_unit(self) -> Result<Content, E> {
+ Ok(Content::Unit)
+ }
+
+ fn serialize_unit_struct(self, name: &'static str) -> Result<Content, E> {
+ Ok(Content::UnitStruct(name))
+ }
+
+ fn serialize_unit_variant(
+ self,
+ name: &'static str,
+ variant_index: u32,
+ variant: &'static str,
+ ) -> Result<Content, E> {
+ Ok(Content::UnitVariant(name, variant_index, variant))
+ }
+
+ fn serialize_newtype_struct<T: ?Sized>(
+ self,
+ name: &'static str,
+ value: &T,
+ ) -> Result<Content, E>
+ where
+ T: Serialize,
+ {
+ Ok(Content::NewtypeStruct(
+ name,
+ Box::new(tri!(value.serialize(self))),
+ ))
+ }
+
+ fn serialize_newtype_variant<T: ?Sized>(
+ self,
+ name: &'static str,
+ variant_index: u32,
+ variant: &'static str,
+ value: &T,
+ ) -> Result<Content, E>
+ where
+ T: Serialize,
+ {
+ Ok(Content::NewtypeVariant(
+ name,
+ variant_index,
+ variant,
+ Box::new(tri!(value.serialize(self))),
+ ))
+ }
+
+ fn serialize_seq(self, len: Option<usize>) -> Result<Self::SerializeSeq, E> {
+ Ok(SerializeSeq {
+ elements: Vec::with_capacity(len.unwrap_or(0)),
+ error: PhantomData,
+ })
+ }
+
+ fn serialize_tuple(self, len: usize) -> Result<Self::SerializeTuple, E> {
+ Ok(SerializeTuple {
+ elements: Vec::with_capacity(len),
+ error: PhantomData,
+ })
+ }
+
+ fn serialize_tuple_struct(
+ self,
+ name: &'static str,
+ len: usize,
+ ) -> Result<Self::SerializeTupleStruct, E> {
+ Ok(SerializeTupleStruct {
+ name,
+ fields: Vec::with_capacity(len),
+ error: PhantomData,
+ })
+ }
+
+ fn serialize_tuple_variant(
+ self,
+ name: &'static str,
+ variant_index: u32,
+ variant: &'static str,
+ len: usize,
+ ) -> Result<Self::SerializeTupleVariant, E> {
+ Ok(SerializeTupleVariant {
+ name,
+ variant_index,
+ variant,
+ fields: Vec::with_capacity(len),
+ error: PhantomData,
+ })
+ }
+
+ fn serialize_map(self, len: Option<usize>) -> Result<Self::SerializeMap, E> {
+ Ok(SerializeMap {
+ entries: Vec::with_capacity(len.unwrap_or(0)),
+ key: None,
+ error: PhantomData,
+ })
+ }
+
+ fn serialize_struct(
+ self,
+ name: &'static str,
+ len: usize,
+ ) -> Result<Self::SerializeStruct, E> {
+ Ok(SerializeStruct {
+ name,
+ fields: Vec::with_capacity(len),
+ error: PhantomData,
+ })
+ }
+
+ fn serialize_struct_variant(
+ self,
+ name: &'static str,
+ variant_index: u32,
+ variant: &'static str,
+ len: usize,
+ ) -> Result<Self::SerializeStructVariant, E> {
+ Ok(SerializeStructVariant {
+ name,
+ variant_index,
+ variant,
+ fields: Vec::with_capacity(len),
+ error: PhantomData,
+ })
+ }
+ }
+
+ pub struct SerializeSeq<E> {
+ elements: Vec<Content>,
+ error: PhantomData<E>,
+ }
+
+ impl<E> ser::SerializeSeq for SerializeSeq<E>
+ where
+ E: ser::Error,
+ {
+ type Ok = Content;
+ type Error = E;
+
+ fn serialize_element<T: ?Sized>(&mut self, value: &T) -> Result<(), E>
+ where
+ T: Serialize,
+ {
+ let value = tri!(value.serialize(ContentSerializer::<E>::new()));
+ self.elements.push(value);
+ Ok(())
+ }
+
+ fn end(self) -> Result<Content, E> {
+ Ok(Content::Seq(self.elements))
+ }
+ }
+
+ pub struct SerializeTuple<E> {
+ elements: Vec<Content>,
+ error: PhantomData<E>,
+ }
+
+ impl<E> ser::SerializeTuple for SerializeTuple<E>
+ where
+ E: ser::Error,
+ {
+ type Ok = Content;
+ type Error = E;
+
+ fn serialize_element<T: ?Sized>(&mut self, value: &T) -> Result<(), E>
+ where
+ T: Serialize,
+ {
+ let value = tri!(value.serialize(ContentSerializer::<E>::new()));
+ self.elements.push(value);
+ Ok(())
+ }
+
+ fn end(self) -> Result<Content, E> {
+ Ok(Content::Tuple(self.elements))
+ }
+ }
+
+ pub struct SerializeTupleStruct<E> {
+ name: &'static str,
+ fields: Vec<Content>,
+ error: PhantomData<E>,
+ }
+
+ impl<E> ser::SerializeTupleStruct for SerializeTupleStruct<E>
+ where
+ E: ser::Error,
+ {
+ type Ok = Content;
+ type Error = E;
+
+ fn serialize_field<T: ?Sized>(&mut self, value: &T) -> Result<(), E>
+ where
+ T: Serialize,
+ {
+ let value = tri!(value.serialize(ContentSerializer::<E>::new()));
+ self.fields.push(value);
+ Ok(())
+ }
+
+ fn end(self) -> Result<Content, E> {
+ Ok(Content::TupleStruct(self.name, self.fields))
+ }
+ }
+
+ pub struct SerializeTupleVariant<E> {
+ name: &'static str,
+ variant_index: u32,
+ variant: &'static str,
+ fields: Vec<Content>,
+ error: PhantomData<E>,
+ }
+
+ impl<E> ser::SerializeTupleVariant for SerializeTupleVariant<E>
+ where
+ E: ser::Error,
+ {
+ type Ok = Content;
+ type Error = E;
+
+ fn serialize_field<T: ?Sized>(&mut self, value: &T) -> Result<(), E>
+ where
+ T: Serialize,
+ {
+ let value = tri!(value.serialize(ContentSerializer::<E>::new()));
+ self.fields.push(value);
+ Ok(())
+ }
+
+ fn end(self) -> Result<Content, E> {
+ Ok(Content::TupleVariant(
+ self.name,
+ self.variant_index,
+ self.variant,
+ self.fields,
+ ))
+ }
+ }
+
+ pub struct SerializeMap<E> {
+ entries: Vec<(Content, Content)>,
+ key: Option<Content>,
+ error: PhantomData<E>,
+ }
+
+ impl<E> ser::SerializeMap for SerializeMap<E>
+ where
+ E: ser::Error,
+ {
+ type Ok = Content;
+ type Error = E;
+
+ fn serialize_key<T: ?Sized>(&mut self, key: &T) -> Result<(), E>
+ where
+ T: Serialize,
+ {
+ let key = tri!(key.serialize(ContentSerializer::<E>::new()));
+ self.key = Some(key);
+ Ok(())
+ }
+
+ fn serialize_value<T: ?Sized>(&mut self, value: &T) -> Result<(), E>
+ where
+ T: Serialize,
+ {
+ let key = self
+ .key
+ .take()
+ .expect("serialize_value called before serialize_key");
+ let value = tri!(value.serialize(ContentSerializer::<E>::new()));
+ self.entries.push((key, value));
+ Ok(())
+ }
+
+ fn end(self) -> Result<Content, E> {
+ Ok(Content::Map(self.entries))
+ }
+
+ fn serialize_entry<K: ?Sized, V: ?Sized>(&mut self, key: &K, value: &V) -> Result<(), E>
+ where
+ K: Serialize,
+ V: Serialize,
+ {
+ let key = tri!(key.serialize(ContentSerializer::<E>::new()));
+ let value = tri!(value.serialize(ContentSerializer::<E>::new()));
+ self.entries.push((key, value));
+ Ok(())
+ }
+ }
+
+ pub struct SerializeStruct<E> {
+ name: &'static str,
+ fields: Vec<(&'static str, Content)>,
+ error: PhantomData<E>,
+ }
+
+ impl<E> ser::SerializeStruct for SerializeStruct<E>
+ where
+ E: ser::Error,
+ {
+ type Ok = Content;
+ type Error = E;
+
+ fn serialize_field<T: ?Sized>(&mut self, key: &'static str, value: &T) -> Result<(), E>
+ where
+ T: Serialize,
+ {
+ let value = tri!(value.serialize(ContentSerializer::<E>::new()));
+ self.fields.push((key, value));
+ Ok(())
+ }
+
+ fn end(self) -> Result<Content, E> {
+ Ok(Content::Struct(self.name, self.fields))
+ }
+ }
+
+ pub struct SerializeStructVariant<E> {
+ name: &'static str,
+ variant_index: u32,
+ variant: &'static str,
+ fields: Vec<(&'static str, Content)>,
+ error: PhantomData<E>,
+ }
+
+ impl<E> ser::SerializeStructVariant for SerializeStructVariant<E>
+ where
+ E: ser::Error,
+ {
+ type Ok = Content;
+ type Error = E;
+
+ fn serialize_field<T: ?Sized>(&mut self, key: &'static str, value: &T) -> Result<(), E>
+ where
+ T: Serialize,
+ {
+ let value = tri!(value.serialize(ContentSerializer::<E>::new()));
+ self.fields.push((key, value));
+ Ok(())
+ }
+
+ fn end(self) -> Result<Content, E> {
+ Ok(Content::StructVariant(
+ self.name,
+ self.variant_index,
+ self.variant,
+ self.fields,
+ ))
+ }
+ }
+}
+
+#[cfg(any(feature = "std", feature = "alloc"))]
+pub struct FlatMapSerializer<'a, M: 'a>(pub &'a mut M);
+
+#[cfg(any(feature = "std", feature = "alloc"))]
+impl<'a, M> FlatMapSerializer<'a, M>
+where
+ M: SerializeMap + 'a,
+{
+ fn bad_type(what: Unsupported) -> M::Error {
+ ser::Error::custom(format_args!(
+ "can only flatten structs and maps (got {})",
+ what
+ ))
+ }
+}
+
+#[cfg(any(feature = "std", feature = "alloc"))]
+impl<'a, M> Serializer for FlatMapSerializer<'a, M>
+where
+ M: SerializeMap + 'a,
+{
+ type Ok = ();
+ type Error = M::Error;
+
+ type SerializeSeq = Impossible<Self::Ok, M::Error>;
+ type SerializeTuple = Impossible<Self::Ok, M::Error>;
+ type SerializeTupleStruct = Impossible<Self::Ok, M::Error>;
+ type SerializeMap = FlatMapSerializeMap<'a, M>;
+ type SerializeStruct = FlatMapSerializeStruct<'a, M>;
+ type SerializeTupleVariant = FlatMapSerializeTupleVariantAsMapValue<'a, M>;
+ type SerializeStructVariant = FlatMapSerializeStructVariantAsMapValue<'a, M>;
+
+ fn serialize_bool(self, _: bool) -> Result<Self::Ok, Self::Error> {
+ Err(Self::bad_type(Unsupported::Boolean))
+ }
+
+ fn serialize_i8(self, _: i8) -> Result<Self::Ok, Self::Error> {
+ Err(Self::bad_type(Unsupported::Integer))
+ }
+
+ fn serialize_i16(self, _: i16) -> Result<Self::Ok, Self::Error> {
+ Err(Self::bad_type(Unsupported::Integer))
+ }
+
+ fn serialize_i32(self, _: i32) -> Result<Self::Ok, Self::Error> {
+ Err(Self::bad_type(Unsupported::Integer))
+ }
+
+ fn serialize_i64(self, _: i64) -> Result<Self::Ok, Self::Error> {
+ Err(Self::bad_type(Unsupported::Integer))
+ }
+
+ fn serialize_u8(self, _: u8) -> Result<Self::Ok, Self::Error> {
+ Err(Self::bad_type(Unsupported::Integer))
+ }
+
+ fn serialize_u16(self, _: u16) -> Result<Self::Ok, Self::Error> {
+ Err(Self::bad_type(Unsupported::Integer))
+ }
+
+ fn serialize_u32(self, _: u32) -> Result<Self::Ok, Self::Error> {
+ Err(Self::bad_type(Unsupported::Integer))
+ }
+
+ fn serialize_u64(self, _: u64) -> Result<Self::Ok, Self::Error> {
+ Err(Self::bad_type(Unsupported::Integer))
+ }
+
+ fn serialize_f32(self, _: f32) -> Result<Self::Ok, Self::Error> {
+ Err(Self::bad_type(Unsupported::Float))
+ }
+
+ fn serialize_f64(self, _: f64) -> Result<Self::Ok, Self::Error> {
+ Err(Self::bad_type(Unsupported::Float))
+ }
+
+ fn serialize_char(self, _: char) -> Result<Self::Ok, Self::Error> {
+ Err(Self::bad_type(Unsupported::Char))
+ }
+
+ fn serialize_str(self, _: &str) -> Result<Self::Ok, Self::Error> {
+ Err(Self::bad_type(Unsupported::String))
+ }
+
+ fn serialize_bytes(self, _: &[u8]) -> Result<Self::Ok, Self::Error> {
+ Err(Self::bad_type(Unsupported::ByteArray))
+ }
+
+ fn serialize_none(self) -> Result<Self::Ok, Self::Error> {
+ Ok(())
+ }
+
+ fn serialize_some<T: ?Sized>(self, value: &T) -> Result<Self::Ok, Self::Error>
+ where
+ T: Serialize,
+ {
+ value.serialize(self)
+ }
+
+ fn serialize_unit(self) -> Result<Self::Ok, Self::Error> {
+ Ok(())
+ }
+
+ fn serialize_unit_struct(self, _: &'static str) -> Result<Self::Ok, Self::Error> {
+ Err(Self::bad_type(Unsupported::UnitStruct))
+ }
+
+ fn serialize_unit_variant(
+ self,
+ _: &'static str,
+ _: u32,
+ _: &'static str,
+ ) -> Result<Self::Ok, Self::Error> {
+ Err(Self::bad_type(Unsupported::Enum))
+ }
+
+ 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: ?Sized>(
+ self,
+ _: &'static str,
+ _: u32,
+ variant: &'static str,
+ value: &T,
+ ) -> Result<Self::Ok, Self::Error>
+ where
+ T: Serialize,
+ {
+ tri!(self.0.serialize_key(variant));
+ self.0.serialize_value(value)
+ }
+
+ fn serialize_seq(self, _: Option<usize>) -> Result<Self::SerializeSeq, Self::Error> {
+ Err(Self::bad_type(Unsupported::Sequence))
+ }
+
+ fn serialize_tuple(self, _: usize) -> Result<Self::SerializeTuple, Self::Error> {
+ Err(Self::bad_type(Unsupported::Tuple))
+ }
+
+ fn serialize_tuple_struct(
+ self,
+ _: &'static str,
+ _: usize,
+ ) -> Result<Self::SerializeTupleStruct, Self::Error> {
+ Err(Self::bad_type(Unsupported::TupleStruct))
+ }
+
+ fn serialize_tuple_variant(
+ self,
+ _: &'static str,
+ _: u32,
+ variant: &'static str,
+ _: usize,
+ ) -> Result<Self::SerializeTupleVariant, Self::Error> {
+ tri!(self.0.serialize_key(variant));
+ Ok(FlatMapSerializeTupleVariantAsMapValue::new(self.0))
+ }
+
+ fn serialize_map(self, _: Option<usize>) -> Result<Self::SerializeMap, Self::Error> {
+ Ok(FlatMapSerializeMap(self.0))
+ }
+
+ fn serialize_struct(
+ self,
+ _: &'static str,
+ _: usize,
+ ) -> Result<Self::SerializeStruct, Self::Error> {
+ Ok(FlatMapSerializeStruct(self.0))
+ }
+
+ fn serialize_struct_variant(
+ self,
+ _: &'static str,
+ _: u32,
+ inner_variant: &'static str,
+ _: usize,
+ ) -> Result<Self::SerializeStructVariant, Self::Error> {
+ tri!(self.0.serialize_key(inner_variant));
+ Ok(FlatMapSerializeStructVariantAsMapValue::new(
+ self.0,
+ inner_variant,
+ ))
+ }
+}
+
+#[cfg(any(feature = "std", feature = "alloc"))]
+pub struct FlatMapSerializeMap<'a, M: 'a>(&'a mut M);
+
+#[cfg(any(feature = "std", feature = "alloc"))]
+impl<'a, M> ser::SerializeMap for FlatMapSerializeMap<'a, M>
+where
+ M: SerializeMap + 'a,
+{
+ type Ok = ();
+ type Error = M::Error;
+
+ fn serialize_key<T: ?Sized>(&mut self, key: &T) -> Result<(), Self::Error>
+ where
+ T: Serialize,
+ {
+ self.0.serialize_key(key)
+ }
+
+ fn serialize_value<T: ?Sized>(&mut self, value: &T) -> Result<(), Self::Error>
+ where
+ T: Serialize,
+ {
+ self.0.serialize_value(value)
+ }
+
+ fn serialize_entry<K: ?Sized, V: ?Sized>(
+ &mut self,
+ key: &K,
+ value: &V,
+ ) -> Result<(), Self::Error>
+ where
+ K: Serialize,
+ V: Serialize,
+ {
+ self.0.serialize_entry(key, value)
+ }
+
+ fn end(self) -> Result<(), Self::Error> {
+ Ok(())
+ }
+}
+
+#[cfg(any(feature = "std", feature = "alloc"))]
+pub struct FlatMapSerializeStruct<'a, M: 'a>(&'a mut M);
+
+#[cfg(any(feature = "std", feature = "alloc"))]
+impl<'a, M> ser::SerializeStruct for FlatMapSerializeStruct<'a, M>
+where
+ M: SerializeMap + 'a,
+{
+ type Ok = ();
+ type Error = M::Error;
+
+ fn serialize_field<T: ?Sized>(
+ &mut self,
+ key: &'static str,
+ value: &T,
+ ) -> Result<(), Self::Error>
+ where
+ T: Serialize,
+ {
+ self.0.serialize_entry(key, value)
+ }
+
+ fn end(self) -> Result<(), Self::Error> {
+ Ok(())
+ }
+}
+
+////////////////////////////////////////////////////////////////////////////////////////////////////
+
+#[cfg(any(feature = "std", feature = "alloc"))]
+pub struct FlatMapSerializeTupleVariantAsMapValue<'a, M: 'a> {
+ map: &'a mut M,
+ fields: Vec<Content>,
+}
+
+#[cfg(any(feature = "std", feature = "alloc"))]
+impl<'a, M> FlatMapSerializeTupleVariantAsMapValue<'a, M>
+where
+ M: SerializeMap + 'a,
+{
+ fn new(map: &'a mut M) -> Self {
+ FlatMapSerializeTupleVariantAsMapValue {
+ map,
+ fields: Vec::new(),
+ }
+ }
+}
+
+#[cfg(any(feature = "std", feature = "alloc"))]
+impl<'a, M> ser::SerializeTupleVariant for FlatMapSerializeTupleVariantAsMapValue<'a, M>
+where
+ M: SerializeMap + 'a,
+{
+ type Ok = ();
+ type Error = M::Error;
+
+ fn serialize_field<T: ?Sized>(&mut self, value: &T) -> Result<(), Self::Error>
+ where
+ T: Serialize,
+ {
+ let value = tri!(value.serialize(ContentSerializer::<M::Error>::new()));
+ self.fields.push(value);
+ Ok(())
+ }
+
+ fn end(self) -> Result<(), Self::Error> {
+ tri!(self.map.serialize_value(&Content::Seq(self.fields)));
+ Ok(())
+ }
+}
+
+////////////////////////////////////////////////////////////////////////////////////////////////////
+
+#[cfg(any(feature = "std", feature = "alloc"))]
+pub struct FlatMapSerializeStructVariantAsMapValue<'a, M: 'a> {
+ map: &'a mut M,
+ name: &'static str,
+ fields: Vec<(&'static str, Content)>,
+}
+
+#[cfg(any(feature = "std", feature = "alloc"))]
+impl<'a, M> FlatMapSerializeStructVariantAsMapValue<'a, M>
+where
+ M: SerializeMap + 'a,
+{
+ fn new(map: &'a mut M, name: &'static str) -> FlatMapSerializeStructVariantAsMapValue<'a, M> {
+ FlatMapSerializeStructVariantAsMapValue {
+ map,
+ name,
+ fields: Vec::new(),
+ }
+ }
+}
+
+#[cfg(any(feature = "std", feature = "alloc"))]
+impl<'a, M> ser::SerializeStructVariant for FlatMapSerializeStructVariantAsMapValue<'a, M>
+where
+ M: SerializeMap + 'a,
+{
+ type Ok = ();
+ type Error = M::Error;
+
+ fn serialize_field<T: ?Sized>(
+ &mut self,
+ key: &'static str,
+ value: &T,
+ ) -> Result<(), Self::Error>
+ where
+ T: Serialize,
+ {
+ let value = tri!(value.serialize(ContentSerializer::<M::Error>::new()));
+ self.fields.push((key, value));
+ Ok(())
+ }
+
+ fn end(self) -> Result<(), Self::Error> {
+ tri!(self
+ .map
+ .serialize_value(&Content::Struct(self.name, self.fields)));
+ Ok(())
+ }
+}
+
+pub struct AdjacentlyTaggedEnumVariant {
+ pub enum_name: &'static str,
+ pub variant_index: u32,
+ pub variant_name: &'static str,
+}
+
+impl Serialize for AdjacentlyTaggedEnumVariant {
+ fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error>
+ where
+ S: Serializer,
+ {
+ serializer.serialize_unit_variant(self.enum_name, self.variant_index, self.variant_name)
+ }
+}
+
+// Error when Serialize for a non_exhaustive remote enum encounters a variant
+// that is not recognized.
+pub struct CannotSerializeVariant<T>(pub T);
+
+impl<T> Display for CannotSerializeVariant<T>
+where
+ T: Debug,
+{
+ fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
+ write!(formatter, "enum variant cannot be serialized: {:?}", self.0)
+ }
+}
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