Struct std::io::IntoInnerError

[+] Show declaration

pub struct IntoInnerError<W>(_, _);

[−] Expand description

An error returned by into_inner which combines an error that happened while writing out the buffer, and the buffered writer object which may be used to recover from the condition.

Examples

use std::io::BufWriter;
use std::net::TcpStream;

let mut stream = BufWriter::new(TcpStream::connect("127.0.0.1:34254").unwrap());

// do stuff with the stream

// we want to get our `TcpStream` back, so let's try:

let stream = match stream.into_inner() {
    Ok(s) => s,
    Err(e) => {
        // Here, e is an IntoInnerError
        panic!("An error occurred");
    }
};

Methods

impl<W> IntoInnerError<W>[−]

pub fn error(&self) -> &Error[−]

Returns the error which caused the call to into_inner() to fail.

This error was returned when attempting to write the internal buffer.

Examples

use std::io::BufWriter;
use std::net::TcpStream;

let mut stream = BufWriter::new(TcpStream::connect("127.0.0.1:34254").unwrap());

// do stuff with the stream

// we want to get our `TcpStream` back, so let's try:

let stream = match stream.into_inner() {
    Ok(s) => s,
    Err(e) => {
        // Here, e is an IntoInnerError, let's log the inner error.
        //
        // We'll just 'log' to stdout for this example.
        println!("{}", e.error());

        panic!("An unexpected error occurred.");
    }
};

pub fn into_inner(self) -> W[−]

Returns the buffered writer instance which generated the error.

The returned object can be used for error recovery, such as re-inspecting the buffer.

Examples

use std::io::BufWriter;
use std::net::TcpStream;

let mut stream = BufWriter::new(TcpStream::connect("127.0.0.1:34254").unwrap());

// do stuff with the stream

// we want to get our `TcpStream` back, so let's try:

let stream = match stream.into_inner() {
    Ok(s) => s,
    Err(e) => {
        // Here, e is an IntoInnerError, let's re-examine the buffer:
        let buffer = e.into_inner();

        // do stuff to try to recover

        // afterwards, let's just return the stream
        buffer.into_inner().unwrap()
    }
};

Trait Implementations

impl<W: Send + Debug> Error for IntoInnerError<W>[+]

[+] Show hidden undocumented items

fn description(&self) -> &str[−]

This method is soft-deprecated.

fn cause(&self) -> Option<&dyn Error>[−]

Deprecated since 1.33.0:

replaced by Error::source, which can support downcasting

The lower-level cause of this error, if any.

fn source(&self) -> Option<&(dyn Error + 'static)>[−]

The lower-level source of this error, if any.

impl<W> Display for IntoInnerError<W>[+]

[+] Show hidden undocumented items

fn fmt(&self, f: &mut Formatter) -> Result[−]

Formats the value using the given formatter.

impl<W: Debug> Debug for IntoInnerError<W>[+]

[+] Show hidden undocumented items

fn fmt(&self, f: &mut Formatter) -> Result[−]

Formats the value using the given formatter.

impl<W> From<IntoInnerError<W>> for Error[+]

[+] Show hidden undocumented items

fn from(iie: IntoInnerError<W>) -> Error[−]

Performs the conversion.