结构体 Limit 

pub struct Limit<T> { /* private fields */ }

一个限制可写入到底层缓冲区字节数的 BufMut 适配器。

实现

impl<T> Limit<T>

pub fn into_inner(self) -> T

消耗该 Limit，返回底层的值。

pub fn get_ref(&self) -> &T

获得底层 BufMut 的引用。

不建议直接对底层 BufMut 进行写入。

pub fn get_mut(&mut self) -> &mut T

获得底层 BufMut 的可变引用。

不建议直接对底层 BufMut 进行写入。

pub fn limit(&self) -> usize

返回可写入的最大字节数。

注意

如果底层 BufMut 可用的字节数少于本方法返回的值， 则以实际可用字节数为准。

pub fn set_limit(&mut self, lim: usize)

设置可写入的最大字节数。

注意

如果底层 BufMut 可用的字节数少于 lim， 则以实际可用字节数为准。

Trait 实现

impl<T: BufMut> BufMut for Limit<T>

fn remaining_mut(&self) -> usize

Returns the number of bytes that can be written from the current position until the end of the buffer is reached. 更多信息

fn chunk_mut(&mut self) -> &mut UninitSlice

Returns a mutable slice starting at the current BufMut position and of length between 0 and BufMut::remaining_mut(). Note that this can be shorter than the whole remainder of the buffer (this allows non-continuous implementation). 更多信息

unsafe fn advance_mut(&mut self, cnt: usize)

Advance the internal cursor of the BufMut 更多信息

fn has_remaining_mut(&self) -> bool

Returns true if there is space in self for more bytes. 更多信息

fn put<T: Buf>(&mut self, src: T)

where Self: Sized,

Transfer bytes into self from src and advance the cursor by the number of bytes written. 更多信息

fn put_slice(&mut self, src: &[u8])

Transfer bytes into self from src and advance the cursor by the number of bytes written. 更多信息

fn put_bytes(&mut self, val: u8, cnt: usize)

Put cnt bytes val into self. 更多信息

fn put_u8(&mut self, n: u8)

Writes an unsigned 8 bit integer to self. 更多信息

fn put_i8(&mut self, n: i8)

Writes a signed 8 bit integer to self. 更多信息

fn put_u16(&mut self, n: u16)

Writes an unsigned 16 bit integer to self in big-endian byte order. 更多信息

fn put_u16_le(&mut self, n: u16)

Writes an unsigned 16 bit integer to self in little-endian byte order. 更多信息

fn put_u16_ne(&mut self, n: u16)

Writes an unsigned 16 bit integer to self in native-endian byte order. 更多信息

fn put_i16(&mut self, n: i16)

Writes a signed 16 bit integer to self in big-endian byte order. 更多信息

fn put_i16_le(&mut self, n: i16)

Writes a signed 16 bit integer to self in little-endian byte order. 更多信息

fn put_i16_ne(&mut self, n: i16)

Writes a signed 16 bit integer to self in native-endian byte order. 更多信息

fn put_u32(&mut self, n: u32)

Writes an unsigned 32 bit integer to self in big-endian byte order. 更多信息

fn put_u32_le(&mut self, n: u32)

Writes an unsigned 32 bit integer to self in little-endian byte order. 更多信息

fn put_u32_ne(&mut self, n: u32)

Writes an unsigned 32 bit integer to self in native-endian byte order. 更多信息

fn put_i32(&mut self, n: i32)

Writes a signed 32 bit integer to self in big-endian byte order. 更多信息

fn put_i32_le(&mut self, n: i32)

Writes a signed 32 bit integer to self in little-endian byte order. 更多信息

fn put_i32_ne(&mut self, n: i32)

Writes a signed 32 bit integer to self in native-endian byte order. 更多信息

fn put_u64(&mut self, n: u64)

Writes an unsigned 64 bit integer to self in the big-endian byte order. 更多信息

fn put_u64_le(&mut self, n: u64)

Writes an unsigned 64 bit integer to self in little-endian byte order. 更多信息

fn put_u64_ne(&mut self, n: u64)

Writes an unsigned 64 bit integer to self in native-endian byte order. 更多信息

fn put_i64(&mut self, n: i64)

Writes a signed 64 bit integer to self in the big-endian byte order. 更多信息

fn put_i64_le(&mut self, n: i64)

Writes a signed 64 bit integer to self in little-endian byte order. 更多信息

fn put_i64_ne(&mut self, n: i64)

Writes a signed 64 bit integer to self in native-endian byte order. 更多信息

fn put_u128(&mut self, n: u128)

Writes an unsigned 128 bit integer to self in the big-endian byte order. 更多信息

fn put_u128_le(&mut self, n: u128)

Writes an unsigned 128 bit integer to self in little-endian byte order. 更多信息

fn put_u128_ne(&mut self, n: u128)

Writes an unsigned 128 bit integer to self in native-endian byte order. 更多信息

fn put_i128(&mut self, n: i128)

Writes a signed 128 bit integer to self in the big-endian byte order. 更多信息

fn put_i128_le(&mut self, n: i128)

Writes a signed 128 bit integer to self in little-endian byte order. 更多信息

fn put_i128_ne(&mut self, n: i128)

Writes a signed 128 bit integer to self in native-endian byte order. 更多信息

fn put_uint(&mut self, n: u64, nbytes: usize)

Writes an unsigned n-byte integer to self in big-endian byte order. 更多信息

fn put_uint_le(&mut self, n: u64, nbytes: usize)

Writes an unsigned n-byte integer to self in the little-endian byte order. 更多信息

fn put_uint_ne(&mut self, n: u64, nbytes: usize)

Writes an unsigned n-byte integer to self in the native-endian byte order. 更多信息

fn put_int(&mut self, n: i64, nbytes: usize)

Writes low nbytes of a signed integer to self in big-endian byte order. 更多信息

fn put_int_le(&mut self, n: i64, nbytes: usize)

Writes low nbytes of a signed integer to self in little-endian byte order. 更多信息

fn put_int_ne(&mut self, n: i64, nbytes: usize)

Writes low nbytes of a signed integer to self in native-endian byte order. 更多信息

fn put_f32(&mut self, n: f32)

Writes an IEEE754 single-precision (4 bytes) floating point number to self in big-endian byte order. 更多信息

fn put_f32_le(&mut self, n: f32)

Writes an IEEE754 single-precision (4 bytes) floating point number to self in little-endian byte order. 更多信息

fn put_f32_ne(&mut self, n: f32)

Writes an IEEE754 single-precision (4 bytes) floating point number to self in native-endian byte order. 更多信息

fn put_f64(&mut self, n: f64)

Writes an IEEE754 double-precision (8 bytes) floating point number to self in big-endian byte order. 更多信息

fn put_f64_le(&mut self, n: f64)

Writes an IEEE754 double-precision (8 bytes) floating point number to self in little-endian byte order. 更多信息

fn put_f64_ne(&mut self, n: f64)

Writes an IEEE754 double-precision (8 bytes) floating point number to self in native-endian byte order. 更多信息

fn limit(self, limit: usize) -> Limit<Self>

where Self: Sized,

Creates an adaptor which can write at most limit bytes to self. 更多信息

fn writer(self) -> Writer<Self>

where Self: Sized,

Creates an adaptor which implements the Write trait for self. 更多信息

fn chain_mut<U: BufMut>(self, next: U) -> Chain<Self, U>

where Self: Sized,

Creates an adapter which will chain this buffer with another. 更多信息

impl<T: Debug> Debug for Limit<T>

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

使用给定的格式化器格式化此值。 更多信息