Struct serde_yaml::Serializer

pub struct Serializer<W> { /* fields omitted */ }

A structure for serializing Rust values into YAML.

Example

use anyhow::Result;
use serde::Serialize;
use std::collections::BTreeMap;

fn main() -> Result<()> {
    let mut buffer = Vec::new();
    let mut ser = serde_yaml::Serializer::new(&mut buffer);

    let mut object = BTreeMap::new();
    object.insert("k", 107);
    object.serialize(&mut ser)?;

    object.insert("J", 74);
    object.serialize(&mut ser)?;

    assert_eq!(buffer, b"---\nk: 107\n...\n---\nJ: 74\nk: 107\n");
    Ok(())
}

Implementations

impl<W> Serializer<W> where
    W: Write, 

pub fn new(writer: W) -> Self

Creates a new YAML serializer.

pub fn into_inner(self) -> W

Unwrap the underlying io::Write object from the Serializer.

Trait Implementations

impl<'a, W> Serializer for &'a mut Serializer<W> where
    W: Write, 

type Ok = ()

The output type produced by this Serializer during successful serialization. Most serializers that produce text or binary output should set Ok = () and serialize into an io::Write or buffer contained within the Serializer instance. Serializers that build in-memory data structures may be simplified by using Ok to propagate the data structure around.

type Error = Error

The error type when some error occurs during serialization.

type SerializeSeq = ThenWrite<'a, W, SerializeArray>

Type returned from serialize_seq for serializing the content of the sequence.

type SerializeTuple = ThenWrite<'a, W, SerializeArray>

Type returned from serialize_tuple for serializing the content of the tuple.

type SerializeTupleStruct = ThenWrite<'a, W, SerializeArray>

Type returned from serialize_tuple_struct for serializing the content of the tuple struct.

type SerializeTupleVariant = ThenWrite<'a, W, SerializeTupleVariant>

Type returned from serialize_tuple_variant for serializing the content of the tuple variant.

type SerializeMap = ThenWrite<'a, W, SerializeMap>

Type returned from serialize_map for serializing the content of the map.

type SerializeStruct = ThenWrite<'a, W, SerializeStruct>

Type returned from serialize_struct for serializing the content of the struct.

type SerializeStructVariant = ThenWrite<'a, W, SerializeStructVariant>

Type returned from serialize_struct_variant for serializing the content of the struct variant.

fn serialize_bool(self, v: bool) -> Result<()>

Serialize a bool value.

fn serialize_i8(self, v: i8) -> Result<()>

Serialize an i8 value.

fn serialize_i16(self, v: i16) -> Result<()>

Serialize an i16 value.

fn serialize_i32(self, v: i32) -> Result<()>

Serialize an i32 value.

fn serialize_i64(self, v: i64) -> Result<()>

Serialize an i64 value.

fn serialize_i128(self, v: i128) -> Result<()>

Serialize an i128 value.

fn serialize_u8(self, v: u8) -> Result<()>

Serialize a u8 value.

fn serialize_u16(self, v: u16) -> Result<()>

Serialize a u16 value.

fn serialize_u32(self, v: u32) -> Result<()>

Serialize a u32 value.

fn serialize_u64(self, v: u64) -> Result<()>

Serialize a u64 value.

fn serialize_u128(self, v: u128) -> Result<()>

Serialize a u128 value.

fn serialize_f32(self, v: f32) -> Result<()>

Serialize an f32 value.

fn serialize_f64(self, v: f64) -> Result<()>

Serialize an f64 value.

fn serialize_char(self, value: char) -> Result<()>

Serialize a character.

fn serialize_str(self, value: &str) -> Result<()>

Serialize a &str.

fn serialize_bytes(self, value: &[u8]) -> Result<()>

Serialize a chunk of raw byte data.

fn serialize_unit(self) -> Result<()>

Serialize a () value.

fn serialize_unit_struct(self, name: &'static str) -> Result<()>

Serialize a unit struct like struct Unit or PhantomData<T>.

fn serialize_unit_variant(
    self,
    name: &'static str,
    variant_index: u32,
    variant: &'static str
) -> Result<()>

Serialize a unit variant like E::A in enum E { A, B }.

fn serialize_newtype_struct<T: ?Sized>(
    self,
    name: &'static str,
    value: &T
) -> Result<()> where
    T: Serialize, 

Serialize a newtype struct like struct Millimeters(u8).

fn serialize_newtype_variant<T: ?Sized>(
    self,
    name: &'static str,
    variant_index: u32,
    variant: &'static str,
    value: &T
) -> Result<()> where
    T: Serialize, 

Serialize a newtype variant like E::N in enum E { N(u8) }.

fn serialize_none(self) -> Result<()>

Serialize a None value.

fn serialize_some<V: ?Sized>(self, value: &V) -> Result<()> where
    V: Serialize, 

Serialize a Some(T) value.

fn serialize_seq(self, len: Option<usize>) -> Result<Self::SerializeSeq>

Begin to serialize a variably sized sequence. This call must be followed by zero or more calls to serialize_element, then a call to end.

fn serialize_tuple(self, len: usize) -> Result<Self::SerializeTuple>

Begin to serialize a statically sized sequence whose length will be known at deserialization time without looking at the serialized data. This call must be followed by zero or more calls to serialize_element, then a call to end.

fn serialize_tuple_struct(
    self,
    name: &'static str,
    len: usize
) -> Result<Self::SerializeTupleStruct>

Begin to serialize a tuple struct like struct Rgb(u8, u8, u8). This call must be followed by zero or more calls to serialize_field, then a call to end.

fn serialize_tuple_variant(
    self,
    enm: &'static str,
    idx: u32,
    variant: &'static str,
    len: usize
) -> Result<Self::SerializeTupleVariant>

Begin to serialize a tuple variant like E::T in enum E { T(u8, u8) }. This call must be followed by zero or more calls to serialize_field, then a call to end.

fn serialize_map(self, len: Option<usize>) -> Result<Self::SerializeMap>

Begin to serialize a map. This call must be followed by zero or more calls to serialize_key and serialize_value, then a call to end.

fn serialize_struct(
    self,
    name: &'static str,
    len: usize
) -> Result<Self::SerializeStruct>

Begin to serialize a struct like struct Rgb { r: u8, g: u8, b: u8 }. This call must be followed by zero or more calls to serialize_field, then a call to end.

fn serialize_struct_variant(
    self,
    enm: &'static str,
    idx: u32,
    variant: &'static str,
    len: usize
) -> Result<Self::SerializeStructVariant>

Begin to serialize a struct variant like E::S in enum E { S { r: u8, g: u8, b: u8 } }. This call must be followed by zero or more calls to serialize_field, then a call to end.

pub fn collect_seq<I>(self, iter: I) -> Result<Self::Ok, Self::Error> where
    I: IntoIterator,
    <I as IntoIterator>::Item: Serialize, 

Collect an iterator as a sequence.

pub fn collect_map<K, V, I>(self, iter: I) -> Result<Self::Ok, Self::Error> where
    V: Serialize,
    K: Serialize,
    I: IntoIterator<Item = (K, V)>, 

Collect an iterator as a map.

pub fn collect_str<T>(self, value: &T) -> Result<Self::Ok, Self::Error> where
    T: Display + ?Sized, 

Serialize a string produced by an implementation of Display.

pub fn is_human_readable(&self) -> bool

Determine whether Serialize implementations should serialize in human-readable form.