Struct json_tools::TokenReader

pub struct TokenReader<'a, I: IntoIterator<Item = Token>> { /* fields omitted */ }

An adapter to convert a stream of Tokens into bytes by implementing an std::io::Read trait.

Currently it produces output without any whitespace, suitable for efficient sending and for handling by machines.

Methods

impl<'a, I: IntoIterator<Item = Token>> TokenReader<'a, I>

Important traits for TokenReader<'a, I>

impl<'a, I: IntoIterator<Item = Token>> Read for TokenReader<'a, I>

pub fn new(iter: I, source: Option<&'a str>) -> TokenReader<'a, I>

Returns a new TokenReader

Args

• iter - the iterator producing Token instances we are to convert
• source - an optional, original string from which the tokens were generated. This offers the best performance when serializing tokens, as they can refer to their original &str slice.

Trait Implementations

impl<'a, I: IntoIterator<Item = Token>> Read for TokenReader<'a, I>

fn read(&mut self, buf: &mut [u8]) -> Result<usize>

Pull some bytes from this source into the specified buffer, returning how many bytes were read.

fn read_vectored(&mut self, bufs: &mut [IoSliceMut]) -> Result<usize, Error>

Like read, except that it reads into a slice of buffers.

unsafe fn initializer(&self) -> Initializer

🔬 This is a nightly-only experimental API. (read_initializer)

Determines if this Reader can work with buffers of uninitialized memory.

fn read_to_end(&mut self, buf: &mut Vec<u8>) -> Result<usize, Error>

Read all bytes until EOF in this source, placing them into buf.

fn read_to_string(&mut self, buf: &mut String) -> Result<usize, Error>

Read all bytes until EOF in this source, appending them to buf.

fn read_exact(&mut self, buf: &mut [u8]) -> Result<(), Error>

Read the exact number of bytes required to fill buf.

fn by_ref(&mut self) -> &mut Self

Creates a "by reference" adaptor for this instance of Read.

fn bytes(self) -> Bytes<Self>

Transforms this Read instance to an [Iterator] over its bytes.

fn chain<R>(self, next: R) -> Chain<Self, R> where
    R: Read, 

Creates an adaptor which will chain this stream with another.

fn take(self, limit: u64) -> Take<Self>

Creates an adaptor which will read at most limit bytes from it.