Trait serde_json::ser::Formatter

pub trait Formatter {
    fn open<W>(&mut self, writer: &mut W, ch: u8) -> Result<()> where W: Write;
    fn comma<W>(&mut self, writer: &mut W, first: bool) -> Result<()> where W: Write;
    fn colon<W>(&mut self, writer: &mut W) -> Result<()> where W: Write;
    fn close<W>(&mut self, writer: &mut W, ch: u8) -> Result<()> where W: Write;
}

This trait abstracts away serializing the JSON control characters, which allows the user to optionally pretty print the JSON output.

Required Methods

fn open<W>(&mut self, writer: &mut W, ch: u8) -> Result<()> where W: Write

Called when serializing a '{' or '['.

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

Called when serializing a ','.

fn colon<W>(&mut self, writer: &mut W) -> Result<()> where W: Write

Called when serializing a ':'.

fn close<W>(&mut self, writer: &mut W, ch: u8) -> Result<()> where W: Write

Called when serializing a '}' or ']'.

Implementors

• impl Formatter for CompactFormatter
• impl<'a> Formatter for PrettyFormatter<'a>