55 lines
1.5 KiB
Rust
55 lines
1.5 KiB
Rust
use super::{write::Writer, Encoder};
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use crate::{config::Config, utils::Sealed};
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/// An Encoder that writes bytes into a given writer `W`.
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///
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/// This struct should rarely be used.
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/// In most cases, prefer any of the `encode` functions.
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///
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/// The ByteOrder that is chosen will impact the endianness that
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/// is used to write integers to the writer.
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///
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/// ```
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/// # use bincode::enc::{write::SliceWriter, EncoderImpl, Encode};
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/// # use bincode::config::{self, Config};
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/// # let config = config::Configuration::standard().with_fixed_int_encoding().with_big_endian();
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/// let slice: &mut [u8] = &mut [0, 0, 0, 0];
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/// let mut encoder = EncoderImpl::new(SliceWriter::new(slice), config);
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/// // this u32 can be any Encodable
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/// 5u32.encode(&mut encoder).unwrap();
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/// assert_eq!(encoder.into_writer().bytes_written(), 4);
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/// assert_eq!(slice, [0, 0, 0, 5]);
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/// ```
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pub struct EncoderImpl<W: Writer, C: Config> {
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writer: W,
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config: C,
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}
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impl<W: Writer, C: Config> EncoderImpl<W, C> {
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/// Create a new Encoder
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pub fn new(writer: W, config: C) -> EncoderImpl<W, C> {
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EncoderImpl { writer, config }
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}
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/// Return the underlying writer
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pub fn into_writer(self) -> W {
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self.writer
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}
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}
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impl<'a, W: Writer, C: Config> Encoder for &'a mut EncoderImpl<W, C> {
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type W = W;
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type C = C;
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fn writer(&mut self) -> &mut Self::W {
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&mut self.writer
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}
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fn config(&self) -> &Self::C {
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&self.config
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}
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}
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impl<'a, W: Writer, C: Config> Sealed for &'a mut EncoderImpl<W, C> {}
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