Struct PythonFormatter

pub struct PythonFormatter {}

A serde_json::ser::Formatter that mimics the output of Pythons json.dumps.

Example

let mut buf = Vec::new();
let mut serializer = serde_json::Serializer::with_formatter(&mut buf, PythonFormatter::default());
json!({"hello":"world"}).serialize(&mut serializer).unwrap();
let json_string = String::from_utf8(buf).unwrap();

Trait Implementations

impl Clone for PythonFormatter

fn clone(&self) -> PythonFormatter

Returns a duplicate of the value.

const fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for PythonFormatter

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Default for PythonFormatter

fn default() -> PythonFormatter

Returns the “default value” for a type.

impl Formatter for PythonFormatter

fn begin_array_value<W>(&mut self, writer: &mut W, first: bool) -> Result<()>

where W: ?Sized + Write,

Called before every array value. Writes a , if needed to the specified writer.

fn begin_object_key<W>(&mut self, writer: &mut W, first: bool) -> Result<()>

where W: ?Sized + Write,

Called before every object key.

fn begin_object_value<W>(&mut self, writer: &mut W) -> Result<()>

where W: ?Sized + Write,

Called before every object value. A : should be written to the specified writer by either this method or end_object_key.

fn write_null<W>(&mut self, writer: &mut W) -> Result<(), Error>

where W: Write + ?Sized,

Writes a null value to the specified writer.

fn write_bool<W>(&mut self, writer: &mut W, value: bool) -> Result<(), Error>

where W: Write + ?Sized,

Writes a true or false value to the specified writer.

fn write_i8<W>(&mut self, writer: &mut W, value: i8) -> Result<(), Error>

where W: Write + ?Sized,

Writes an integer value like -123 to the specified writer.

fn write_i16<W>(&mut self, writer: &mut W, value: i16) -> Result<(), Error>

where W: Write + ?Sized,

Writes an integer value like -123 to the specified writer.

fn write_i32<W>(&mut self, writer: &mut W, value: i32) -> Result<(), Error>

where W: Write + ?Sized,

Writes an integer value like -123 to the specified writer.

fn write_i64<W>(&mut self, writer: &mut W, value: i64) -> Result<(), Error>

where W: Write + ?Sized,

Writes an integer value like -123 to the specified writer.

fn write_i128<W>(&mut self, writer: &mut W, value: i128) -> Result<(), Error>

where W: Write + ?Sized,

Writes an integer value like -123 to the specified writer.

fn write_u8<W>(&mut self, writer: &mut W, value: u8) -> Result<(), Error>

where W: Write + ?Sized,

Writes an integer value like 123 to the specified writer.

fn write_u16<W>(&mut self, writer: &mut W, value: u16) -> Result<(), Error>

where W: Write + ?Sized,

Writes an integer value like 123 to the specified writer.

fn write_u32<W>(&mut self, writer: &mut W, value: u32) -> Result<(), Error>

where W: Write + ?Sized,

Writes an integer value like 123 to the specified writer.

fn write_u64<W>(&mut self, writer: &mut W, value: u64) -> Result<(), Error>

where W: Write + ?Sized,

Writes an integer value like 123 to the specified writer.

fn write_u128<W>(&mut self, writer: &mut W, value: u128) -> Result<(), Error>

where W: Write + ?Sized,

Writes an integer value like 123 to the specified writer.

fn write_f32<W>(&mut self, writer: &mut W, value: f32) -> Result<(), Error>

where W: Write + ?Sized,

Writes a floating point value like -31.26e+12 to the specified writer.

fn write_f64<W>(&mut self, writer: &mut W, value: f64) -> Result<(), Error>

where W: Write + ?Sized,

Writes a floating point value like -31.26e+12 to the specified writer.

fn write_number_str<W>( &mut self, writer: &mut W, value: &str, ) -> Result<(), Error>

where W: Write + ?Sized,

Writes a number that has already been rendered to a string.

fn begin_string<W>(&mut self, writer: &mut W) -> Result<(), Error>

where W: Write + ?Sized,

Called before each series of write_string_fragment and write_char_escape. Writes a " to the specified writer.

fn end_string<W>(&mut self, writer: &mut W) -> Result<(), Error>

where W: Write + ?Sized,

Called after each series of write_string_fragment and write_char_escape. Writes a " to the specified writer.

fn write_string_fragment<W>( &mut self, writer: &mut W, fragment: &str, ) -> Result<(), Error>

where W: Write + ?Sized,

Writes a string fragment that doesn’t need any escaping to the specified writer.

fn write_char_escape<W>( &mut self, writer: &mut W, char_escape: CharEscape, ) -> Result<(), Error>

where W: Write + ?Sized,

Writes a character escape code to the specified writer.

fn write_byte_array<W>( &mut self, writer: &mut W, value: &[u8], ) -> Result<(), Error>

where W: Write + ?Sized,

Writes the representation of a byte array. Formatters can choose whether to represent bytes as a JSON array of integers (the default), or some JSON string encoding like hex or base64.

fn begin_array<W>(&mut self, writer: &mut W) -> Result<(), Error>

where W: Write + ?Sized,

Called before every array. Writes a [ to the specified writer.

fn end_array<W>(&mut self, writer: &mut W) -> Result<(), Error>

where W: Write + ?Sized,

Called after every array. Writes a ] to the specified writer.

fn end_array_value<W>(&mut self, _writer: &mut W) -> Result<(), Error>

where W: Write + ?Sized,

Called after every array value.

fn begin_object<W>(&mut self, writer: &mut W) -> Result<(), Error>

where W: Write + ?Sized,

Called before every object. Writes a { to the specified writer.

fn end_object<W>(&mut self, writer: &mut W) -> Result<(), Error>

where W: Write + ?Sized,

Called after every object. Writes a } to the specified writer.

fn end_object_key<W>(&mut self, _writer: &mut W) -> Result<(), Error>

where W: Write + ?Sized,

Called after every object key. A : should be written to the specified writer by either this method or begin_object_value.

fn end_object_value<W>(&mut self, _writer: &mut W) -> Result<(), Error>

where W: Write + ?Sized,

Called after every object value.

fn write_raw_fragment<W>( &mut self, writer: &mut W, fragment: &str, ) -> Result<(), Error>

where W: Write + ?Sized,

Writes a raw JSON fragment that doesn’t need any escaping to the specified writer.