pub struct FileEncoder {
    buf: Box<[MaybeUninit<u8>]>,
    buffered: usize,
    flushed: usize,
    file: File,
    res: Result<(), Error>,
}
Expand description

FileEncoder encodes data to file via fixed-size buffer.

There used to be a MemEncoder type that encoded all the data into a Vec. FileEncoder is better because its memory use is determined by the size of the buffer, rather than the full length of the encoded data, and because it doesn’t need to reallocate memory along the way.

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§buf: Box<[MaybeUninit<u8>]>

The input buffer. For adequate performance, we need more control over buffering than BufWriter offers. If BufWriter ever offers a raw buffer access API, we can use it, and remove buf and buffered.

§buffered: usize§flushed: usize§file: File§res: Result<(), Error>

Implementations§

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impl FileEncoder

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pub fn new<P: AsRef<Path>>(path: P) -> Result<Self>

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pub fn position(&self) -> usize

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pub fn flush(&mut self)

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pub fn file(&self) -> &File

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fn write_one(&mut self, value: u8)

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fn write_all(&mut self, buf: &[u8])

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fn write_all_unbuffered(&mut self, buf: &[u8])

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pub fn finish(self) -> Result<usize, Error>

Trait Implementations§

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impl Drop for FileEncoder

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fn drop(&mut self)

Executes the destructor for this type. Read more
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impl Encodable<FileEncoder> for [u8]

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fn encode(&self, e: &mut FileEncoder)

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impl Encodable<FileEncoder> for IntEncodedWithFixedSize

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fn encode(&self, e: &mut FileEncoder)

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impl Encoder for FileEncoder

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fn emit_usize(&mut self, v: usize)

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fn emit_u128(&mut self, v: u128)

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fn emit_u64(&mut self, v: u64)

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fn emit_u32(&mut self, v: u32)

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fn emit_u16(&mut self, v: u16)

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fn emit_u8(&mut self, v: u8)

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fn emit_isize(&mut self, v: isize)

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fn emit_i128(&mut self, v: i128)

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fn emit_i64(&mut self, v: i64)

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fn emit_i32(&mut self, v: i32)

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fn emit_i16(&mut self, v: i16)

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fn emit_raw_bytes(&mut self, s: &[u8])

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fn emit_i8(&mut self, v: i8)

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fn emit_bool(&mut self, v: bool)

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fn emit_char(&mut self, v: char)

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fn emit_str(&mut self, v: &str)

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fn emit_enum_variant<F>(&mut self, v_id: usize, f: F)where F: FnOnce(&mut Self),

Auto Trait Implementations§

Blanket Implementations§

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impl<T> Any for Twhere T: 'static + ?Sized,

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fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more
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impl<T> Borrow<T> for Twhere T: ?Sized,

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fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more
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impl<T> BorrowMut<T> for Twhere T: ?Sized,

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fn borrow_mut(&mut self) -> &mut T

Mutably borrows from an owned value. Read more
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impl<T> From<T> for T

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fn from(t: T) -> T

Returns the argument unchanged.

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impl<T, U> Into<U> for Twhere U: From<T>,

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fn into(self) -> U

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

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impl<T, U> TryFrom<U> for Twhere U: Into<T>,

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type Error = Infallible

The type returned in the event of a conversion error.
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fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

Performs the conversion.
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impl<T, U> TryInto<U> for Twhere U: TryFrom<T>,

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type Error = <U as TryFrom<T>>::Error

The type returned in the event of a conversion error.
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fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.

Layout§

Note: Most layout information is completely unstable and may even differ between compilations. The only exception is types with certain repr(...) attributes. Please see the Rust Reference’s “Type Layout” chapter for details on type layout guarantees.

Size:48 bytes