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<nav id="sidebar" class="sidebar" aria-label="Table of contents">
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<ol class="chapter"><li class="affix"><a href="index.html">chainerror</a></li><li><a href="tutorial1.html"><strong aria-hidden="true">1.</strong> Simple String Errors</a></li><li><a href="tutorial2.html"><strong aria-hidden="true">2.</strong> Simple Chained String Errors</a></li><li><a href="tutorial3.html"><strong aria-hidden="true">3.</strong> Mapping Errors</a></li><li><a href="tutorial4.html"><strong aria-hidden="true">4.</strong> Saving coding chars</a></li><li><a href="tutorial5.html"><strong aria-hidden="true">5.</strong> The source() of Errors</a></li><li><a href="tutorial6.html"><strong aria-hidden="true">6.</strong> Downcast the Errors</a></li><li><a href="tutorial7.html"><strong aria-hidden="true">7.</strong> The root cause of all Errors</a></li><li><a href="tutorial8.html"><strong aria-hidden="true">8.</strong> Finding an Error cause</a></li><li><a href="tutorial9.html"><strong aria-hidden="true">9.</strong> Selective Error Handling</a></li><li><a href="tutorial10.html"><strong aria-hidden="true">10.</strong> ErrorKind to the rescue</a></li><li><a href="tutorial11.html"><strong aria-hidden="true">11.</strong> Debug for the ErrorKind</a></li><li><a href="tutorial12.html"><strong aria-hidden="true">12.</strong> Deref for the ErrorKind</a></li><li class="affix"><a href="end.html" class="active">The End</a></li></ol>
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<ol class="chapter"><li class="affix"><a href="index.html">chainerror</a></li><li><a href="tutorial1.html"><strong aria-hidden="true">1.</strong> Simple String Errors</a></li><li><a href="tutorial2.html"><strong aria-hidden="true">2.</strong> Simple Chained String Errors</a></li><li><a href="tutorial3.html"><strong aria-hidden="true">3.</strong> Mapping Errors</a></li><li><a href="tutorial4.html"><strong aria-hidden="true">4.</strong> Saving coding chars</a></li><li><a href="tutorial5.html"><strong aria-hidden="true">5.</strong> The source() of Errors</a></li><li><a href="tutorial6.html"><strong aria-hidden="true">6.</strong> Downcast the Errors</a></li><li><a href="tutorial7.html"><strong aria-hidden="true">7.</strong> The root cause of all Errors</a></li><li><a href="tutorial8.html"><strong aria-hidden="true">8.</strong> Finding an Error cause</a></li><li><a href="tutorial9.html"><strong aria-hidden="true">9.</strong> Selective Error Handling</a></li><li><a href="tutorial10.html"><strong aria-hidden="true">10.</strong> ErrorKind to the rescue</a></li><li><a href="tutorial11.html"><strong aria-hidden="true">11.</strong> Debug for the ErrorKind</a></li><li><a href="tutorial12.html"><strong aria-hidden="true">12.</strong> Deref for the ErrorKind</a></li><li><a href="tutorial13.html"><strong aria-hidden="true">13.</strong> Writing a library</a></li><li class="affix"><a href="end.html" class="active">The End</a></li></ol>
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@ -151,7 +151,7 @@ the <a href="https://github.com/haraldh/chainerror">Git Repo</a>.</p>
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@ -165,7 +165,7 @@ the <a href="https://github.com/haraldh/chainerror">Git Repo</a>.</p>
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<ol class="chapter"><li class="affix"><a href="index.html">chainerror</a></li><li><a href="tutorial1.html"><strong aria-hidden="true">1.</strong> Simple String Errors</a></li><li><a href="tutorial2.html"><strong aria-hidden="true">2.</strong> Simple Chained String Errors</a></li><li><a href="tutorial3.html"><strong aria-hidden="true">3.</strong> Mapping Errors</a></li><li><a href="tutorial4.html"><strong aria-hidden="true">4.</strong> Saving coding chars</a></li><li><a href="tutorial5.html"><strong aria-hidden="true">5.</strong> The source() of Errors</a></li><li><a href="tutorial6.html"><strong aria-hidden="true">6.</strong> Downcast the Errors</a></li><li><a href="tutorial7.html"><strong aria-hidden="true">7.</strong> The root cause of all Errors</a></li><li><a href="tutorial8.html"><strong aria-hidden="true">8.</strong> Finding an Error cause</a></li><li><a href="tutorial9.html"><strong aria-hidden="true">9.</strong> Selective Error Handling</a></li><li><a href="tutorial10.html"><strong aria-hidden="true">10.</strong> ErrorKind to the rescue</a></li><li><a href="tutorial11.html"><strong aria-hidden="true">11.</strong> Debug for the ErrorKind</a></li><li><a href="tutorial12.html"><strong aria-hidden="true">12.</strong> Deref for the ErrorKind</a></li><li class="affix"><a href="end.html">The End</a></li></ol>
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<ol class="chapter"><li class="affix"><a href="index.html">chainerror</a></li><li><a href="tutorial1.html"><strong aria-hidden="true">1.</strong> Simple String Errors</a></li><li><a href="tutorial2.html"><strong aria-hidden="true">2.</strong> Simple Chained String Errors</a></li><li><a href="tutorial3.html"><strong aria-hidden="true">3.</strong> Mapping Errors</a></li><li><a href="tutorial4.html"><strong aria-hidden="true">4.</strong> Saving coding chars</a></li><li><a href="tutorial5.html"><strong aria-hidden="true">5.</strong> The source() of Errors</a></li><li><a href="tutorial6.html"><strong aria-hidden="true">6.</strong> Downcast the Errors</a></li><li><a href="tutorial7.html"><strong aria-hidden="true">7.</strong> The root cause of all Errors</a></li><li><a href="tutorial8.html"><strong aria-hidden="true">8.</strong> Finding an Error cause</a></li><li><a href="tutorial9.html"><strong aria-hidden="true">9.</strong> Selective Error Handling</a></li><li><a href="tutorial10.html"><strong aria-hidden="true">10.</strong> ErrorKind to the rescue</a></li><li><a href="tutorial11.html"><strong aria-hidden="true">11.</strong> Debug for the ErrorKind</a></li><li><a href="tutorial12.html"><strong aria-hidden="true">12.</strong> Deref for the ErrorKind</a></li><li><a href="tutorial13.html"><strong aria-hidden="true">13.</strong> Writing a library</a></li><li class="affix"><a href="end.html">The End</a></li></ol>
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<nav id="sidebar" class="sidebar" aria-label="Table of contents">
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<ol class="chapter"><li class="affix"><a href="index.html">chainerror</a></li><li><a href="tutorial1.html" class="active"><strong aria-hidden="true">1.</strong> Simple String Errors</a></li><li><a href="tutorial2.html"><strong aria-hidden="true">2.</strong> Simple Chained String Errors</a></li><li><a href="tutorial3.html"><strong aria-hidden="true">3.</strong> Mapping Errors</a></li><li><a href="tutorial4.html"><strong aria-hidden="true">4.</strong> Saving coding chars</a></li><li><a href="tutorial5.html"><strong aria-hidden="true">5.</strong> The source() of Errors</a></li><li><a href="tutorial6.html"><strong aria-hidden="true">6.</strong> Downcast the Errors</a></li><li><a href="tutorial7.html"><strong aria-hidden="true">7.</strong> The root cause of all Errors</a></li><li><a href="tutorial8.html"><strong aria-hidden="true">8.</strong> Finding an Error cause</a></li><li><a href="tutorial9.html"><strong aria-hidden="true">9.</strong> Selective Error Handling</a></li><li><a href="tutorial10.html"><strong aria-hidden="true">10.</strong> ErrorKind to the rescue</a></li><li><a href="tutorial11.html"><strong aria-hidden="true">11.</strong> Debug for the ErrorKind</a></li><li><a href="tutorial12.html"><strong aria-hidden="true">12.</strong> Deref for the ErrorKind</a></li><li class="affix"><a href="end.html">The End</a></li></ol>
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<ol class="chapter"><li class="affix"><a href="index.html">chainerror</a></li><li><a href="tutorial1.html" class="active"><strong aria-hidden="true">1.</strong> Simple String Errors</a></li><li><a href="tutorial2.html"><strong aria-hidden="true">2.</strong> Simple Chained String Errors</a></li><li><a href="tutorial3.html"><strong aria-hidden="true">3.</strong> Mapping Errors</a></li><li><a href="tutorial4.html"><strong aria-hidden="true">4.</strong> Saving coding chars</a></li><li><a href="tutorial5.html"><strong aria-hidden="true">5.</strong> The source() of Errors</a></li><li><a href="tutorial6.html"><strong aria-hidden="true">6.</strong> Downcast the Errors</a></li><li><a href="tutorial7.html"><strong aria-hidden="true">7.</strong> The root cause of all Errors</a></li><li><a href="tutorial8.html"><strong aria-hidden="true">8.</strong> Finding an Error cause</a></li><li><a href="tutorial9.html"><strong aria-hidden="true">9.</strong> Selective Error Handling</a></li><li><a href="tutorial10.html"><strong aria-hidden="true">10.</strong> ErrorKind to the rescue</a></li><li><a href="tutorial11.html"><strong aria-hidden="true">11.</strong> Debug for the ErrorKind</a></li><li><a href="tutorial12.html"><strong aria-hidden="true">12.</strong> Deref for the ErrorKind</a></li><li><a href="tutorial13.html"><strong aria-hidden="true">13.</strong> Writing a library</a></li><li class="affix"><a href="end.html">The End</a></li></ol>
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<nav id="sidebar" class="sidebar" aria-label="Table of contents">
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<ol class="chapter"><li class="affix"><a href="index.html">chainerror</a></li><li><a href="tutorial1.html"><strong aria-hidden="true">1.</strong> Simple String Errors</a></li><li><a href="tutorial2.html"><strong aria-hidden="true">2.</strong> Simple Chained String Errors</a></li><li><a href="tutorial3.html"><strong aria-hidden="true">3.</strong> Mapping Errors</a></li><li><a href="tutorial4.html"><strong aria-hidden="true">4.</strong> Saving coding chars</a></li><li><a href="tutorial5.html"><strong aria-hidden="true">5.</strong> The source() of Errors</a></li><li><a href="tutorial6.html"><strong aria-hidden="true">6.</strong> Downcast the Errors</a></li><li><a href="tutorial7.html"><strong aria-hidden="true">7.</strong> The root cause of all Errors</a></li><li><a href="tutorial8.html"><strong aria-hidden="true">8.</strong> Finding an Error cause</a></li><li><a href="tutorial9.html"><strong aria-hidden="true">9.</strong> Selective Error Handling</a></li><li><a href="tutorial10.html" class="active"><strong aria-hidden="true">10.</strong> ErrorKind to the rescue</a></li><li><a href="tutorial11.html"><strong aria-hidden="true">11.</strong> Debug for the ErrorKind</a></li><li><a href="tutorial12.html"><strong aria-hidden="true">12.</strong> Deref for the ErrorKind</a></li><li class="affix"><a href="end.html">The End</a></li></ol>
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<ol class="chapter"><li class="affix"><a href="index.html">chainerror</a></li><li><a href="tutorial1.html"><strong aria-hidden="true">1.</strong> Simple String Errors</a></li><li><a href="tutorial2.html"><strong aria-hidden="true">2.</strong> Simple Chained String Errors</a></li><li><a href="tutorial3.html"><strong aria-hidden="true">3.</strong> Mapping Errors</a></li><li><a href="tutorial4.html"><strong aria-hidden="true">4.</strong> Saving coding chars</a></li><li><a href="tutorial5.html"><strong aria-hidden="true">5.</strong> The source() of Errors</a></li><li><a href="tutorial6.html"><strong aria-hidden="true">6.</strong> Downcast the Errors</a></li><li><a href="tutorial7.html"><strong aria-hidden="true">7.</strong> The root cause of all Errors</a></li><li><a href="tutorial8.html"><strong aria-hidden="true">8.</strong> Finding an Error cause</a></li><li><a href="tutorial9.html"><strong aria-hidden="true">9.</strong> Selective Error Handling</a></li><li><a href="tutorial10.html" class="active"><strong aria-hidden="true">10.</strong> ErrorKind to the rescue</a></li><li><a href="tutorial11.html"><strong aria-hidden="true">11.</strong> Debug for the ErrorKind</a></li><li><a href="tutorial12.html"><strong aria-hidden="true">12.</strong> Deref for the ErrorKind</a></li><li><a href="tutorial13.html"><strong aria-hidden="true">13.</strong> Writing a library</a></li><li class="affix"><a href="end.html">The End</a></li></ol>
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</nav>
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<div id="page-wrapper" class="page-wrapper">
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@ -151,7 +151,7 @@ use <code>ChainResult<(), Func1ErrorKind></code>.</p>
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<p>In <code>main</code> we can now directly use the methods of <code>ChainError<T></code> without downcasting the error first.</p>
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<p>Also a nice <code>match</code> on <code>ChainError<T>.kind()</code> is now possible, which returns <code>&T</code>, meaning
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<code>&Func1ErrorKind</code> here.</p>
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<pre><pre class="playpen"><code class="language-rust">use crate::chainerror::*;
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<pre><pre class="playpen"><code class="language-rust">use chainerror::*;
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use std::error::Error;
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use std::io;
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use std::result::Result;
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@ -209,6 +209,7 @@ fn main() -> Result<(), Box<Error>> {
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}
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Ok(())
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}
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# #[allow(dead_code)]
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# mod chainerror {
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# //! `chainerror` provides an error backtrace without doing a real backtrace, so even after you `strip` your
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@ -897,15 +898,9 @@ fn main() -> Result<(), Box<Error>> {
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# ( None, $fmt:expr, $($arg:tt)+ ) => ({
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# cherr!(None, format!($fmt, $($arg)+ ))
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# });
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# ( $e:ident, $k:expr ) => ({
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# ChainError::<_>::new($k, Some(Box::from($e)), Some((line!(), file!())))
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# });
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# ( $e:path, $k:expr ) => ({
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# ChainError::<_>::new($k, Some(Box::from($e)), Some((line!(), file!())))
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# });
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# ( $e:ident, $fmt:expr, $($arg:tt)+ ) => ({
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# cherr!($e, format!($fmt, $($arg)+ ))
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# });
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# ( $e:path, $fmt:expr, $($arg:tt)+ ) => ({
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# cherr!($e, format!($fmt, $($arg)+ ))
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# });
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# /// ~~~
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# #[macro_export]
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# macro_rules! mstrerr {
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# ( $t:ident, $msg:expr ) => ({
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# |e| cherr!(e, $t ($msg.to_string()))
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# });
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# ( $t:path, $msg:expr ) => ({
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# |e| cherr!(e, $t ($msg.to_string()))
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# });
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# ( $t:ident, $msg:expr, ) => ({
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# |e| cherr!(e, $t ($msg.to_string()))
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# });
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# ( $t:path, $msg:expr, ) => ({
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# |e| cherr!(e, $t ($msg.to_string()))
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# });
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# ( $t:ident, $fmt:expr, $($arg:tt)+ ) => ({
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# |e| cherr!(e, $t (format!($fmt, $($arg)+ )))
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# });
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# ( $t:path, $fmt:expr, $($arg:tt)+ ) => ({
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# |e| cherr!(e, $t (format!($fmt, $($arg)+ )))
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# });
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# /// ~~~
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# #[macro_export]
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# macro_rules! strerr {
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# ( $t:ident, $msg:expr ) => ({
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# cherr!($t ($msg.to_string()))
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# });
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# ( $t:path, $msg:expr ) => ({
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# cherr!($t ($msg.to_string()))
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# });
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# ( $t:ident, $msg:expr, ) => ({
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# cherr!($t ($msg.to_string()))
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# });
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# ( $t:path, $msg:expr, ) => ({
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# cherr!($t ($msg.to_string()))
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# });
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# ( $t:ident, $fmt:expr, $($arg:tt)+ ) => ({
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# cherr!($t (format!($fmt, $($arg)+ )))
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# });
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# ( $t:path, $fmt:expr, $($arg:tt)+ ) => ({
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# cherr!($t (format!($fmt, $($arg)+ )))
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# });
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@ -75,7 +75,7 @@
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</script>
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<nav id="sidebar" class="sidebar" aria-label="Table of contents">
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<ol class="chapter"><li class="affix"><a href="index.html">chainerror</a></li><li><a href="tutorial1.html"><strong aria-hidden="true">1.</strong> Simple String Errors</a></li><li><a href="tutorial2.html"><strong aria-hidden="true">2.</strong> Simple Chained String Errors</a></li><li><a href="tutorial3.html"><strong aria-hidden="true">3.</strong> Mapping Errors</a></li><li><a href="tutorial4.html"><strong aria-hidden="true">4.</strong> Saving coding chars</a></li><li><a href="tutorial5.html"><strong aria-hidden="true">5.</strong> The source() of Errors</a></li><li><a href="tutorial6.html"><strong aria-hidden="true">6.</strong> Downcast the Errors</a></li><li><a href="tutorial7.html"><strong aria-hidden="true">7.</strong> The root cause of all Errors</a></li><li><a href="tutorial8.html"><strong aria-hidden="true">8.</strong> Finding an Error cause</a></li><li><a href="tutorial9.html"><strong aria-hidden="true">9.</strong> Selective Error Handling</a></li><li><a href="tutorial10.html"><strong aria-hidden="true">10.</strong> ErrorKind to the rescue</a></li><li><a href="tutorial11.html" class="active"><strong aria-hidden="true">11.</strong> Debug for the ErrorKind</a></li><li><a href="tutorial12.html"><strong aria-hidden="true">12.</strong> Deref for the ErrorKind</a></li><li class="affix"><a href="end.html">The End</a></li></ol>
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||||
<ol class="chapter"><li class="affix"><a href="index.html">chainerror</a></li><li><a href="tutorial1.html"><strong aria-hidden="true">1.</strong> Simple String Errors</a></li><li><a href="tutorial2.html"><strong aria-hidden="true">2.</strong> Simple Chained String Errors</a></li><li><a href="tutorial3.html"><strong aria-hidden="true">3.</strong> Mapping Errors</a></li><li><a href="tutorial4.html"><strong aria-hidden="true">4.</strong> Saving coding chars</a></li><li><a href="tutorial5.html"><strong aria-hidden="true">5.</strong> The source() of Errors</a></li><li><a href="tutorial6.html"><strong aria-hidden="true">6.</strong> Downcast the Errors</a></li><li><a href="tutorial7.html"><strong aria-hidden="true">7.</strong> The root cause of all Errors</a></li><li><a href="tutorial8.html"><strong aria-hidden="true">8.</strong> Finding an Error cause</a></li><li><a href="tutorial9.html"><strong aria-hidden="true">9.</strong> Selective Error Handling</a></li><li><a href="tutorial10.html"><strong aria-hidden="true">10.</strong> ErrorKind to the rescue</a></li><li><a href="tutorial11.html" class="active"><strong aria-hidden="true">11.</strong> Debug for the ErrorKind</a></li><li><a href="tutorial12.html"><strong aria-hidden="true">12.</strong> Deref for the ErrorKind</a></li><li><a href="tutorial13.html"><strong aria-hidden="true">13.</strong> Writing a library</a></li><li class="affix"><a href="end.html">The End</a></li></ol>
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</nav>
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<div id="page-wrapper" class="page-wrapper">
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@ -156,7 +156,7 @@ src/main.rs:40: func1 error calling func2
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<p>To create your own Errors, you might find <a href="https://crates.io">crates</a> which create enum <code>Display+Debug</code> via derive macros.</p>
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<p>Also noteworthy is <a href="https://crates.io/crates/custom_error">custom_error</a> to define your custom errors,
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which can then be used with <code>chainerror</code>.</p>
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<pre><pre class="playpen"><code class="language-rust">use crate::chainerror::*;
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<pre><pre class="playpen"><code class="language-rust">use chainerror::*;
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use std::error::Error;
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use std::io;
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use std::result::Result;
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@ -220,6 +220,7 @@ fn main() -> Result<(), Box<Error>> {
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}
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Ok(())
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}
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# #[allow(dead_code)]
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# mod chainerror {
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# //! `chainerror` provides an error backtrace without doing a real backtrace, so even after you `strip` your
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@ -908,15 +909,9 @@ fn main() -> Result<(), Box<Error>> {
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# ( None, $fmt:expr, $($arg:tt)+ ) => ({
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# cherr!(None, format!($fmt, $($arg)+ ))
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# });
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# ( $e:ident, $k:expr ) => ({
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# ChainError::<_>::new($k, Some(Box::from($e)), Some((line!(), file!())))
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# });
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# ( $e:path, $k:expr ) => ({
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||||
# ChainError::<_>::new($k, Some(Box::from($e)), Some((line!(), file!())))
|
||||
# });
|
||||
# ( $e:ident, $fmt:expr, $($arg:tt)+ ) => ({
|
||||
# cherr!($e, format!($fmt, $($arg)+ ))
|
||||
# });
|
||||
# ( $e:path, $fmt:expr, $($arg:tt)+ ) => ({
|
||||
# cherr!($e, format!($fmt, $($arg)+ ))
|
||||
# });
|
||||
|
|
@ -1011,21 +1006,12 @@ fn main() -> Result<(), Box<Error>> {
|
|||
# /// ~~~
|
||||
# #[macro_export]
|
||||
# macro_rules! mstrerr {
|
||||
# ( $t:ident, $msg:expr ) => ({
|
||||
# |e| cherr!(e, $t ($msg.to_string()))
|
||||
# });
|
||||
# ( $t:path, $msg:expr ) => ({
|
||||
# |e| cherr!(e, $t ($msg.to_string()))
|
||||
# });
|
||||
# ( $t:ident, $msg:expr, ) => ({
|
||||
# |e| cherr!(e, $t ($msg.to_string()))
|
||||
# });
|
||||
# ( $t:path, $msg:expr, ) => ({
|
||||
# |e| cherr!(e, $t ($msg.to_string()))
|
||||
# });
|
||||
# ( $t:ident, $fmt:expr, $($arg:tt)+ ) => ({
|
||||
# |e| cherr!(e, $t (format!($fmt, $($arg)+ )))
|
||||
# });
|
||||
# ( $t:path, $fmt:expr, $($arg:tt)+ ) => ({
|
||||
# |e| cherr!(e, $t (format!($fmt, $($arg)+ )))
|
||||
# });
|
||||
|
|
@ -1078,21 +1064,12 @@ fn main() -> Result<(), Box<Error>> {
|
|||
# /// ~~~
|
||||
# #[macro_export]
|
||||
# macro_rules! strerr {
|
||||
# ( $t:ident, $msg:expr ) => ({
|
||||
# cherr!($t ($msg.to_string()))
|
||||
# });
|
||||
# ( $t:path, $msg:expr ) => ({
|
||||
# cherr!($t ($msg.to_string()))
|
||||
# });
|
||||
# ( $t:ident, $msg:expr, ) => ({
|
||||
# cherr!($t ($msg.to_string()))
|
||||
# });
|
||||
# ( $t:path, $msg:expr, ) => ({
|
||||
# cherr!($t ($msg.to_string()))
|
||||
# });
|
||||
# ( $t:ident, $fmt:expr, $($arg:tt)+ ) => ({
|
||||
# cherr!($t (format!($fmt, $($arg)+ )))
|
||||
# });
|
||||
# ( $t:path, $fmt:expr, $($arg:tt)+ ) => ({
|
||||
# cherr!($t (format!($fmt, $($arg)+ )))
|
||||
# });
|
||||
|
|
|
|||
|
|
@ -75,7 +75,7 @@
|
|||
</script>
|
||||
|
||||
<nav id="sidebar" class="sidebar" aria-label="Table of contents">
|
||||
<ol class="chapter"><li class="affix"><a href="index.html">chainerror</a></li><li><a href="tutorial1.html"><strong aria-hidden="true">1.</strong> Simple String Errors</a></li><li><a href="tutorial2.html"><strong aria-hidden="true">2.</strong> Simple Chained String Errors</a></li><li><a href="tutorial3.html"><strong aria-hidden="true">3.</strong> Mapping Errors</a></li><li><a href="tutorial4.html"><strong aria-hidden="true">4.</strong> Saving coding chars</a></li><li><a href="tutorial5.html"><strong aria-hidden="true">5.</strong> The source() of Errors</a></li><li><a href="tutorial6.html"><strong aria-hidden="true">6.</strong> Downcast the Errors</a></li><li><a href="tutorial7.html"><strong aria-hidden="true">7.</strong> The root cause of all Errors</a></li><li><a href="tutorial8.html"><strong aria-hidden="true">8.</strong> Finding an Error cause</a></li><li><a href="tutorial9.html"><strong aria-hidden="true">9.</strong> Selective Error Handling</a></li><li><a href="tutorial10.html"><strong aria-hidden="true">10.</strong> ErrorKind to the rescue</a></li><li><a href="tutorial11.html"><strong aria-hidden="true">11.</strong> Debug for the ErrorKind</a></li><li><a href="tutorial12.html" class="active"><strong aria-hidden="true">12.</strong> Deref for the ErrorKind</a></li><li class="affix"><a href="end.html">The End</a></li></ol>
|
||||
<ol class="chapter"><li class="affix"><a href="index.html">chainerror</a></li><li><a href="tutorial1.html"><strong aria-hidden="true">1.</strong> Simple String Errors</a></li><li><a href="tutorial2.html"><strong aria-hidden="true">2.</strong> Simple Chained String Errors</a></li><li><a href="tutorial3.html"><strong aria-hidden="true">3.</strong> Mapping Errors</a></li><li><a href="tutorial4.html"><strong aria-hidden="true">4.</strong> Saving coding chars</a></li><li><a href="tutorial5.html"><strong aria-hidden="true">5.</strong> The source() of Errors</a></li><li><a href="tutorial6.html"><strong aria-hidden="true">6.</strong> Downcast the Errors</a></li><li><a href="tutorial7.html"><strong aria-hidden="true">7.</strong> The root cause of all Errors</a></li><li><a href="tutorial8.html"><strong aria-hidden="true">8.</strong> Finding an Error cause</a></li><li><a href="tutorial9.html"><strong aria-hidden="true">9.</strong> Selective Error Handling</a></li><li><a href="tutorial10.html"><strong aria-hidden="true">10.</strong> ErrorKind to the rescue</a></li><li><a href="tutorial11.html"><strong aria-hidden="true">11.</strong> Debug for the ErrorKind</a></li><li><a href="tutorial12.html" class="active"><strong aria-hidden="true">12.</strong> Deref for the ErrorKind</a></li><li><a href="tutorial13.html"><strong aria-hidden="true">13.</strong> Writing a library</a></li><li class="affix"><a href="end.html">The End</a></li></ol>
|
||||
</nav>
|
||||
|
||||
<div id="page-wrapper" class="page-wrapper">
|
||||
|
|
@ -143,7 +143,7 @@
|
|||
<a class="header" href="#deref-for-the-errorkind" id="deref-for-the-errorkind"><h1>Deref for the ErrorKind</h1></a>
|
||||
<p>Because ChainError<T> implements Deref to &T, we can also match on <code>*e</code> instead of <code>e.kind()</code>
|
||||
or call a function with <code>&e</code></p>
|
||||
<pre><pre class="playpen"><code class="language-rust">use crate::chainerror::*;
|
||||
<pre><pre class="playpen"><code class="language-rust">use chainerror::*;
|
||||
use std::error::Error;
|
||||
use std::io;
|
||||
use std::result::Result;
|
||||
|
|
@ -218,6 +218,7 @@ fn main() -> Result<(), Box<Error>> {
|
|||
}
|
||||
Ok(())
|
||||
}
|
||||
|
||||
# #[allow(dead_code)]
|
||||
# mod chainerror {
|
||||
# //! `chainerror` provides an error backtrace without doing a real backtrace, so even after you `strip` your
|
||||
|
|
@ -906,15 +907,9 @@ fn main() -> Result<(), Box<Error>> {
|
|||
# ( None, $fmt:expr, $($arg:tt)+ ) => ({
|
||||
# cherr!(None, format!($fmt, $($arg)+ ))
|
||||
# });
|
||||
# ( $e:ident, $k:expr ) => ({
|
||||
# ChainError::<_>::new($k, Some(Box::from($e)), Some((line!(), file!())))
|
||||
# });
|
||||
# ( $e:path, $k:expr ) => ({
|
||||
# ChainError::<_>::new($k, Some(Box::from($e)), Some((line!(), file!())))
|
||||
# });
|
||||
# ( $e:ident, $fmt:expr, $($arg:tt)+ ) => ({
|
||||
# cherr!($e, format!($fmt, $($arg)+ ))
|
||||
# });
|
||||
# ( $e:path, $fmt:expr, $($arg:tt)+ ) => ({
|
||||
# cherr!($e, format!($fmt, $($arg)+ ))
|
||||
# });
|
||||
|
|
@ -1009,21 +1004,12 @@ fn main() -> Result<(), Box<Error>> {
|
|||
# /// ~~~
|
||||
# #[macro_export]
|
||||
# macro_rules! mstrerr {
|
||||
# ( $t:ident, $msg:expr ) => ({
|
||||
# |e| cherr!(e, $t ($msg.to_string()))
|
||||
# });
|
||||
# ( $t:path, $msg:expr ) => ({
|
||||
# |e| cherr!(e, $t ($msg.to_string()))
|
||||
# });
|
||||
# ( $t:ident, $msg:expr, ) => ({
|
||||
# |e| cherr!(e, $t ($msg.to_string()))
|
||||
# });
|
||||
# ( $t:path, $msg:expr, ) => ({
|
||||
# |e| cherr!(e, $t ($msg.to_string()))
|
||||
# });
|
||||
# ( $t:ident, $fmt:expr, $($arg:tt)+ ) => ({
|
||||
# |e| cherr!(e, $t (format!($fmt, $($arg)+ )))
|
||||
# });
|
||||
# ( $t:path, $fmt:expr, $($arg:tt)+ ) => ({
|
||||
# |e| cherr!(e, $t (format!($fmt, $($arg)+ )))
|
||||
# });
|
||||
|
|
@ -1076,21 +1062,12 @@ fn main() -> Result<(), Box<Error>> {
|
|||
# /// ~~~
|
||||
# #[macro_export]
|
||||
# macro_rules! strerr {
|
||||
# ( $t:ident, $msg:expr ) => ({
|
||||
# cherr!($t ($msg.to_string()))
|
||||
# });
|
||||
# ( $t:path, $msg:expr ) => ({
|
||||
# cherr!($t ($msg.to_string()))
|
||||
# });
|
||||
# ( $t:ident, $msg:expr, ) => ({
|
||||
# cherr!($t ($msg.to_string()))
|
||||
# });
|
||||
# ( $t:path, $msg:expr, ) => ({
|
||||
# cherr!($t ($msg.to_string()))
|
||||
# });
|
||||
# ( $t:ident, $fmt:expr, $($arg:tt)+ ) => ({
|
||||
# cherr!($t (format!($fmt, $($arg)+ )))
|
||||
# });
|
||||
# ( $t:path, $fmt:expr, $($arg:tt)+ ) => ({
|
||||
# cherr!($t (format!($fmt, $($arg)+ )))
|
||||
# });
|
||||
|
|
@ -1179,7 +1156,7 @@ fn main() -> Result<(), Box<Error>> {
|
|||
|
||||
|
||||
|
||||
<a rel="next" href="end.html" class="mobile-nav-chapters next" title="Next chapter" aria-label="Next chapter" aria-keyshortcuts="Right">
|
||||
<a rel="next" href="tutorial13.html" class="mobile-nav-chapters next" title="Next chapter" aria-label="Next chapter" aria-keyshortcuts="Right">
|
||||
<i class="fa fa-angle-right"></i>
|
||||
</a>
|
||||
|
||||
|
|
@ -1197,7 +1174,7 @@ fn main() -> Result<(), Box<Error>> {
|
|||
|
||||
|
||||
|
||||
<a href="end.html" class="nav-chapters next" title="Next chapter" aria-label="Next chapter" aria-keyshortcuts="Right">
|
||||
<a href="tutorial13.html" class="nav-chapters next" title="Next chapter" aria-label="Next chapter" aria-keyshortcuts="Right">
|
||||
<i class="fa fa-angle-right"></i>
|
||||
</a>
|
||||
|
||||
|
|
|
|||
1210
tutorial13.html
Normal file
1210
tutorial13.html
Normal file
File diff suppressed because it is too large
Load diff
|
|
@ -75,7 +75,7 @@
|
|||
</script>
|
||||
|
||||
<nav id="sidebar" class="sidebar" aria-label="Table of contents">
|
||||
<ol class="chapter"><li class="affix"><a href="index.html">chainerror</a></li><li><a href="tutorial1.html"><strong aria-hidden="true">1.</strong> Simple String Errors</a></li><li><a href="tutorial2.html" class="active"><strong aria-hidden="true">2.</strong> Simple Chained String Errors</a></li><li><a href="tutorial3.html"><strong aria-hidden="true">3.</strong> Mapping Errors</a></li><li><a href="tutorial4.html"><strong aria-hidden="true">4.</strong> Saving coding chars</a></li><li><a href="tutorial5.html"><strong aria-hidden="true">5.</strong> The source() of Errors</a></li><li><a href="tutorial6.html"><strong aria-hidden="true">6.</strong> Downcast the Errors</a></li><li><a href="tutorial7.html"><strong aria-hidden="true">7.</strong> The root cause of all Errors</a></li><li><a href="tutorial8.html"><strong aria-hidden="true">8.</strong> Finding an Error cause</a></li><li><a href="tutorial9.html"><strong aria-hidden="true">9.</strong> Selective Error Handling</a></li><li><a href="tutorial10.html"><strong aria-hidden="true">10.</strong> ErrorKind to the rescue</a></li><li><a href="tutorial11.html"><strong aria-hidden="true">11.</strong> Debug for the ErrorKind</a></li><li><a href="tutorial12.html"><strong aria-hidden="true">12.</strong> Deref for the ErrorKind</a></li><li class="affix"><a href="end.html">The End</a></li></ol>
|
||||
<ol class="chapter"><li class="affix"><a href="index.html">chainerror</a></li><li><a href="tutorial1.html"><strong aria-hidden="true">1.</strong> Simple String Errors</a></li><li><a href="tutorial2.html" class="active"><strong aria-hidden="true">2.</strong> Simple Chained String Errors</a></li><li><a href="tutorial3.html"><strong aria-hidden="true">3.</strong> Mapping Errors</a></li><li><a href="tutorial4.html"><strong aria-hidden="true">4.</strong> Saving coding chars</a></li><li><a href="tutorial5.html"><strong aria-hidden="true">5.</strong> The source() of Errors</a></li><li><a href="tutorial6.html"><strong aria-hidden="true">6.</strong> Downcast the Errors</a></li><li><a href="tutorial7.html"><strong aria-hidden="true">7.</strong> The root cause of all Errors</a></li><li><a href="tutorial8.html"><strong aria-hidden="true">8.</strong> Finding an Error cause</a></li><li><a href="tutorial9.html"><strong aria-hidden="true">9.</strong> Selective Error Handling</a></li><li><a href="tutorial10.html"><strong aria-hidden="true">10.</strong> ErrorKind to the rescue</a></li><li><a href="tutorial11.html"><strong aria-hidden="true">11.</strong> Debug for the ErrorKind</a></li><li><a href="tutorial12.html"><strong aria-hidden="true">12.</strong> Deref for the ErrorKind</a></li><li><a href="tutorial13.html"><strong aria-hidden="true">13.</strong> Writing a library</a></li><li class="affix"><a href="end.html">The End</a></li></ol>
|
||||
</nav>
|
||||
|
||||
<div id="page-wrapper" class="page-wrapper">
|
||||
|
|
@ -144,7 +144,7 @@
|
|||
<p>With relatively small changes and the help of the <code>cherr!</code> macro of the <code>chainerror</code> crate
|
||||
the <code>String</code> errors are now chained together.</p>
|
||||
<p>Press the play button in the upper right corner and see the nice debug output.</p>
|
||||
<pre><pre class="playpen"><code class="language-rust">use crate::chainerror::*;
|
||||
<pre><pre class="playpen"><code class="language-rust">use chainerror::*;
|
||||
|
||||
use std::error::Error;
|
||||
use std::io;
|
||||
|
|
@ -172,6 +172,7 @@ fn func1() -> Result<(), Box<Error>> {
|
|||
fn main() -> Result<(), Box<Error>> {
|
||||
func1()
|
||||
}
|
||||
|
||||
# #[allow(dead_code)]
|
||||
# mod chainerror {
|
||||
# //! `chainerror` provides an error backtrace without doing a real backtrace, so even after you `strip` your
|
||||
|
|
@ -860,15 +861,9 @@ fn main() -> Result<(), Box<Error>> {
|
|||
# ( None, $fmt:expr, $($arg:tt)+ ) => ({
|
||||
# cherr!(None, format!($fmt, $($arg)+ ))
|
||||
# });
|
||||
# ( $e:ident, $k:expr ) => ({
|
||||
# ChainError::<_>::new($k, Some(Box::from($e)), Some((line!(), file!())))
|
||||
# });
|
||||
# ( $e:path, $k:expr ) => ({
|
||||
# ChainError::<_>::new($k, Some(Box::from($e)), Some((line!(), file!())))
|
||||
# });
|
||||
# ( $e:ident, $fmt:expr, $($arg:tt)+ ) => ({
|
||||
# cherr!($e, format!($fmt, $($arg)+ ))
|
||||
# });
|
||||
# ( $e:path, $fmt:expr, $($arg:tt)+ ) => ({
|
||||
# cherr!($e, format!($fmt, $($arg)+ ))
|
||||
# });
|
||||
|
|
@ -963,21 +958,12 @@ fn main() -> Result<(), Box<Error>> {
|
|||
# /// ~~~
|
||||
# #[macro_export]
|
||||
# macro_rules! mstrerr {
|
||||
# ( $t:ident, $msg:expr ) => ({
|
||||
# |e| cherr!(e, $t ($msg.to_string()))
|
||||
# });
|
||||
# ( $t:path, $msg:expr ) => ({
|
||||
# |e| cherr!(e, $t ($msg.to_string()))
|
||||
# });
|
||||
# ( $t:ident, $msg:expr, ) => ({
|
||||
# |e| cherr!(e, $t ($msg.to_string()))
|
||||
# });
|
||||
# ( $t:path, $msg:expr, ) => ({
|
||||
# |e| cherr!(e, $t ($msg.to_string()))
|
||||
# });
|
||||
# ( $t:ident, $fmt:expr, $($arg:tt)+ ) => ({
|
||||
# |e| cherr!(e, $t (format!($fmt, $($arg)+ )))
|
||||
# });
|
||||
# ( $t:path, $fmt:expr, $($arg:tt)+ ) => ({
|
||||
# |e| cherr!(e, $t (format!($fmt, $($arg)+ )))
|
||||
# });
|
||||
|
|
@ -1030,21 +1016,12 @@ fn main() -> Result<(), Box<Error>> {
|
|||
# /// ~~~
|
||||
# #[macro_export]
|
||||
# macro_rules! strerr {
|
||||
# ( $t:ident, $msg:expr ) => ({
|
||||
# cherr!($t ($msg.to_string()))
|
||||
# });
|
||||
# ( $t:path, $msg:expr ) => ({
|
||||
# cherr!($t ($msg.to_string()))
|
||||
# });
|
||||
# ( $t:ident, $msg:expr, ) => ({
|
||||
# cherr!($t ($msg.to_string()))
|
||||
# });
|
||||
# ( $t:path, $msg:expr, ) => ({
|
||||
# cherr!($t ($msg.to_string()))
|
||||
# });
|
||||
# ( $t:ident, $fmt:expr, $($arg:tt)+ ) => ({
|
||||
# cherr!($t (format!($fmt, $($arg)+ )))
|
||||
# });
|
||||
# ( $t:path, $fmt:expr, $($arg:tt)+ ) => ({
|
||||
# cherr!($t (format!($fmt, $($arg)+ )))
|
||||
# });
|
||||
|
|
|
|||
|
|
@ -75,7 +75,7 @@
|
|||
</script>
|
||||
|
||||
<nav id="sidebar" class="sidebar" aria-label="Table of contents">
|
||||
<ol class="chapter"><li class="affix"><a href="index.html">chainerror</a></li><li><a href="tutorial1.html"><strong aria-hidden="true">1.</strong> Simple String Errors</a></li><li><a href="tutorial2.html"><strong aria-hidden="true">2.</strong> Simple Chained String Errors</a></li><li><a href="tutorial3.html" class="active"><strong aria-hidden="true">3.</strong> Mapping Errors</a></li><li><a href="tutorial4.html"><strong aria-hidden="true">4.</strong> Saving coding chars</a></li><li><a href="tutorial5.html"><strong aria-hidden="true">5.</strong> The source() of Errors</a></li><li><a href="tutorial6.html"><strong aria-hidden="true">6.</strong> Downcast the Errors</a></li><li><a href="tutorial7.html"><strong aria-hidden="true">7.</strong> The root cause of all Errors</a></li><li><a href="tutorial8.html"><strong aria-hidden="true">8.</strong> Finding an Error cause</a></li><li><a href="tutorial9.html"><strong aria-hidden="true">9.</strong> Selective Error Handling</a></li><li><a href="tutorial10.html"><strong aria-hidden="true">10.</strong> ErrorKind to the rescue</a></li><li><a href="tutorial11.html"><strong aria-hidden="true">11.</strong> Debug for the ErrorKind</a></li><li><a href="tutorial12.html"><strong aria-hidden="true">12.</strong> Deref for the ErrorKind</a></li><li class="affix"><a href="end.html">The End</a></li></ol>
|
||||
<ol class="chapter"><li class="affix"><a href="index.html">chainerror</a></li><li><a href="tutorial1.html"><strong aria-hidden="true">1.</strong> Simple String Errors</a></li><li><a href="tutorial2.html"><strong aria-hidden="true">2.</strong> Simple Chained String Errors</a></li><li><a href="tutorial3.html" class="active"><strong aria-hidden="true">3.</strong> Mapping Errors</a></li><li><a href="tutorial4.html"><strong aria-hidden="true">4.</strong> Saving coding chars</a></li><li><a href="tutorial5.html"><strong aria-hidden="true">5.</strong> The source() of Errors</a></li><li><a href="tutorial6.html"><strong aria-hidden="true">6.</strong> Downcast the Errors</a></li><li><a href="tutorial7.html"><strong aria-hidden="true">7.</strong> The root cause of all Errors</a></li><li><a href="tutorial8.html"><strong aria-hidden="true">8.</strong> Finding an Error cause</a></li><li><a href="tutorial9.html"><strong aria-hidden="true">9.</strong> Selective Error Handling</a></li><li><a href="tutorial10.html"><strong aria-hidden="true">10.</strong> ErrorKind to the rescue</a></li><li><a href="tutorial11.html"><strong aria-hidden="true">11.</strong> Debug for the ErrorKind</a></li><li><a href="tutorial12.html"><strong aria-hidden="true">12.</strong> Deref for the ErrorKind</a></li><li><a href="tutorial13.html"><strong aria-hidden="true">13.</strong> Writing a library</a></li><li class="affix"><a href="end.html">The End</a></li></ol>
|
||||
</nav>
|
||||
|
||||
<div id="page-wrapper" class="page-wrapper">
|
||||
|
|
@ -142,7 +142,7 @@
|
|||
<main>
|
||||
<a class="header" href="#mapping-errors" id="mapping-errors"><h1>Mapping Errors</h1></a>
|
||||
<p>Now let's get more rust idiomatic by using <code>.map_err()</code>.</p>
|
||||
<pre><pre class="playpen"><code class="language-rust">use crate::chainerror::*;
|
||||
<pre><pre class="playpen"><code class="language-rust">use chainerror::*;
|
||||
|
||||
use std::error::Error;
|
||||
use std::io;
|
||||
|
|
@ -169,6 +169,7 @@ fn main() -> Result<(), Box<Error>> {
|
|||
}
|
||||
Ok(())
|
||||
}
|
||||
|
||||
# #[allow(dead_code)]
|
||||
# mod chainerror {
|
||||
# //! `chainerror` provides an error backtrace without doing a real backtrace, so even after you `strip` your
|
||||
|
|
@ -857,15 +858,9 @@ fn main() -> Result<(), Box<Error>> {
|
|||
# ( None, $fmt:expr, $($arg:tt)+ ) => ({
|
||||
# cherr!(None, format!($fmt, $($arg)+ ))
|
||||
# });
|
||||
# ( $e:ident, $k:expr ) => ({
|
||||
# ChainError::<_>::new($k, Some(Box::from($e)), Some((line!(), file!())))
|
||||
# });
|
||||
# ( $e:path, $k:expr ) => ({
|
||||
# ChainError::<_>::new($k, Some(Box::from($e)), Some((line!(), file!())))
|
||||
# });
|
||||
# ( $e:ident, $fmt:expr, $($arg:tt)+ ) => ({
|
||||
# cherr!($e, format!($fmt, $($arg)+ ))
|
||||
# });
|
||||
# ( $e:path, $fmt:expr, $($arg:tt)+ ) => ({
|
||||
# cherr!($e, format!($fmt, $($arg)+ ))
|
||||
# });
|
||||
|
|
@ -960,21 +955,12 @@ fn main() -> Result<(), Box<Error>> {
|
|||
# /// ~~~
|
||||
# #[macro_export]
|
||||
# macro_rules! mstrerr {
|
||||
# ( $t:ident, $msg:expr ) => ({
|
||||
# |e| cherr!(e, $t ($msg.to_string()))
|
||||
# });
|
||||
# ( $t:path, $msg:expr ) => ({
|
||||
# |e| cherr!(e, $t ($msg.to_string()))
|
||||
# });
|
||||
# ( $t:ident, $msg:expr, ) => ({
|
||||
# |e| cherr!(e, $t ($msg.to_string()))
|
||||
# });
|
||||
# ( $t:path, $msg:expr, ) => ({
|
||||
# |e| cherr!(e, $t ($msg.to_string()))
|
||||
# });
|
||||
# ( $t:ident, $fmt:expr, $($arg:tt)+ ) => ({
|
||||
# |e| cherr!(e, $t (format!($fmt, $($arg)+ )))
|
||||
# });
|
||||
# ( $t:path, $fmt:expr, $($arg:tt)+ ) => ({
|
||||
# |e| cherr!(e, $t (format!($fmt, $($arg)+ )))
|
||||
# });
|
||||
|
|
@ -1027,21 +1013,12 @@ fn main() -> Result<(), Box<Error>> {
|
|||
# /// ~~~
|
||||
# #[macro_export]
|
||||
# macro_rules! strerr {
|
||||
# ( $t:ident, $msg:expr ) => ({
|
||||
# cherr!($t ($msg.to_string()))
|
||||
# });
|
||||
# ( $t:path, $msg:expr ) => ({
|
||||
# cherr!($t ($msg.to_string()))
|
||||
# });
|
||||
# ( $t:ident, $msg:expr, ) => ({
|
||||
# cherr!($t ($msg.to_string()))
|
||||
# });
|
||||
# ( $t:path, $msg:expr, ) => ({
|
||||
# cherr!($t ($msg.to_string()))
|
||||
# });
|
||||
# ( $t:ident, $fmt:expr, $($arg:tt)+ ) => ({
|
||||
# cherr!($t (format!($fmt, $($arg)+ )))
|
||||
# });
|
||||
# ( $t:path, $fmt:expr, $($arg:tt)+ ) => ({
|
||||
# cherr!($t (format!($fmt, $($arg)+ )))
|
||||
# });
|
||||
|
|
|
|||
|
|
@ -75,7 +75,7 @@
|
|||
</script>
|
||||
|
||||
<nav id="sidebar" class="sidebar" aria-label="Table of contents">
|
||||
<ol class="chapter"><li class="affix"><a href="index.html">chainerror</a></li><li><a href="tutorial1.html"><strong aria-hidden="true">1.</strong> Simple String Errors</a></li><li><a href="tutorial2.html"><strong aria-hidden="true">2.</strong> Simple Chained String Errors</a></li><li><a href="tutorial3.html"><strong aria-hidden="true">3.</strong> Mapping Errors</a></li><li><a href="tutorial4.html" class="active"><strong aria-hidden="true">4.</strong> Saving coding chars</a></li><li><a href="tutorial5.html"><strong aria-hidden="true">5.</strong> The source() of Errors</a></li><li><a href="tutorial6.html"><strong aria-hidden="true">6.</strong> Downcast the Errors</a></li><li><a href="tutorial7.html"><strong aria-hidden="true">7.</strong> The root cause of all Errors</a></li><li><a href="tutorial8.html"><strong aria-hidden="true">8.</strong> Finding an Error cause</a></li><li><a href="tutorial9.html"><strong aria-hidden="true">9.</strong> Selective Error Handling</a></li><li><a href="tutorial10.html"><strong aria-hidden="true">10.</strong> ErrorKind to the rescue</a></li><li><a href="tutorial11.html"><strong aria-hidden="true">11.</strong> Debug for the ErrorKind</a></li><li><a href="tutorial12.html"><strong aria-hidden="true">12.</strong> Deref for the ErrorKind</a></li><li class="affix"><a href="end.html">The End</a></li></ol>
|
||||
<ol class="chapter"><li class="affix"><a href="index.html">chainerror</a></li><li><a href="tutorial1.html"><strong aria-hidden="true">1.</strong> Simple String Errors</a></li><li><a href="tutorial2.html"><strong aria-hidden="true">2.</strong> Simple Chained String Errors</a></li><li><a href="tutorial3.html"><strong aria-hidden="true">3.</strong> Mapping Errors</a></li><li><a href="tutorial4.html" class="active"><strong aria-hidden="true">4.</strong> Saving coding chars</a></li><li><a href="tutorial5.html"><strong aria-hidden="true">5.</strong> The source() of Errors</a></li><li><a href="tutorial6.html"><strong aria-hidden="true">6.</strong> Downcast the Errors</a></li><li><a href="tutorial7.html"><strong aria-hidden="true">7.</strong> The root cause of all Errors</a></li><li><a href="tutorial8.html"><strong aria-hidden="true">8.</strong> Finding an Error cause</a></li><li><a href="tutorial9.html"><strong aria-hidden="true">9.</strong> Selective Error Handling</a></li><li><a href="tutorial10.html"><strong aria-hidden="true">10.</strong> ErrorKind to the rescue</a></li><li><a href="tutorial11.html"><strong aria-hidden="true">11.</strong> Debug for the ErrorKind</a></li><li><a href="tutorial12.html"><strong aria-hidden="true">12.</strong> Deref for the ErrorKind</a></li><li><a href="tutorial13.html"><strong aria-hidden="true">13.</strong> Writing a library</a></li><li class="affix"><a href="end.html">The End</a></li></ol>
|
||||
</nav>
|
||||
|
||||
<div id="page-wrapper" class="page-wrapper">
|
||||
|
|
@ -146,7 +146,7 @@ let you jump through hoops, <code>chainerror</code> has a quick macro for that.<
|
|||
<p><code>mstrerror!()</code> fits right into <code>.map_err()</code> letting you quickly add
|
||||
more debug strings.</p>
|
||||
<p><code>mstrerror!()</code> even understands <code>format!()</code> syntax like <code>println!()</code>.</p>
|
||||
<pre><pre class="playpen"><code class="language-rust">use crate::chainerror::*;
|
||||
<pre><pre class="playpen"><code class="language-rust">use chainerror::*;
|
||||
use std::error::Error;
|
||||
use std::io;
|
||||
use std::result::Result;
|
||||
|
|
@ -173,6 +173,7 @@ fn main() -> Result<(), Box<Error>> {
|
|||
}
|
||||
Ok(())
|
||||
}
|
||||
|
||||
# #[allow(dead_code)]
|
||||
# mod chainerror {
|
||||
# //! `chainerror` provides an error backtrace without doing a real backtrace, so even after you `strip` your
|
||||
|
|
@ -861,15 +862,9 @@ fn main() -> Result<(), Box<Error>> {
|
|||
# ( None, $fmt:expr, $($arg:tt)+ ) => ({
|
||||
# cherr!(None, format!($fmt, $($arg)+ ))
|
||||
# });
|
||||
# ( $e:ident, $k:expr ) => ({
|
||||
# ChainError::<_>::new($k, Some(Box::from($e)), Some((line!(), file!())))
|
||||
# });
|
||||
# ( $e:path, $k:expr ) => ({
|
||||
# ChainError::<_>::new($k, Some(Box::from($e)), Some((line!(), file!())))
|
||||
# });
|
||||
# ( $e:ident, $fmt:expr, $($arg:tt)+ ) => ({
|
||||
# cherr!($e, format!($fmt, $($arg)+ ))
|
||||
# });
|
||||
# ( $e:path, $fmt:expr, $($arg:tt)+ ) => ({
|
||||
# cherr!($e, format!($fmt, $($arg)+ ))
|
||||
# });
|
||||
|
|
@ -964,21 +959,12 @@ fn main() -> Result<(), Box<Error>> {
|
|||
# /// ~~~
|
||||
# #[macro_export]
|
||||
# macro_rules! mstrerr {
|
||||
# ( $t:ident, $msg:expr ) => ({
|
||||
# |e| cherr!(e, $t ($msg.to_string()))
|
||||
# });
|
||||
# ( $t:path, $msg:expr ) => ({
|
||||
# |e| cherr!(e, $t ($msg.to_string()))
|
||||
# });
|
||||
# ( $t:ident, $msg:expr, ) => ({
|
||||
# |e| cherr!(e, $t ($msg.to_string()))
|
||||
# });
|
||||
# ( $t:path, $msg:expr, ) => ({
|
||||
# |e| cherr!(e, $t ($msg.to_string()))
|
||||
# });
|
||||
# ( $t:ident, $fmt:expr, $($arg:tt)+ ) => ({
|
||||
# |e| cherr!(e, $t (format!($fmt, $($arg)+ )))
|
||||
# });
|
||||
# ( $t:path, $fmt:expr, $($arg:tt)+ ) => ({
|
||||
# |e| cherr!(e, $t (format!($fmt, $($arg)+ )))
|
||||
# });
|
||||
|
|
@ -1031,21 +1017,12 @@ fn main() -> Result<(), Box<Error>> {
|
|||
# /// ~~~
|
||||
# #[macro_export]
|
||||
# macro_rules! strerr {
|
||||
# ( $t:ident, $msg:expr ) => ({
|
||||
# cherr!($t ($msg.to_string()))
|
||||
# });
|
||||
# ( $t:path, $msg:expr ) => ({
|
||||
# cherr!($t ($msg.to_string()))
|
||||
# });
|
||||
# ( $t:ident, $msg:expr, ) => ({
|
||||
# cherr!($t ($msg.to_string()))
|
||||
# });
|
||||
# ( $t:path, $msg:expr, ) => ({
|
||||
# cherr!($t ($msg.to_string()))
|
||||
# });
|
||||
# ( $t:ident, $fmt:expr, $($arg:tt)+ ) => ({
|
||||
# cherr!($t (format!($fmt, $($arg)+ )))
|
||||
# });
|
||||
# ( $t:path, $fmt:expr, $($arg:tt)+ ) => ({
|
||||
# cherr!($t (format!($fmt, $($arg)+ )))
|
||||
# });
|
||||
|
|
|
|||
|
|
@ -75,7 +75,7 @@
|
|||
</script>
|
||||
|
||||
<nav id="sidebar" class="sidebar" aria-label="Table of contents">
|
||||
<ol class="chapter"><li class="affix"><a href="index.html">chainerror</a></li><li><a href="tutorial1.html"><strong aria-hidden="true">1.</strong> Simple String Errors</a></li><li><a href="tutorial2.html"><strong aria-hidden="true">2.</strong> Simple Chained String Errors</a></li><li><a href="tutorial3.html"><strong aria-hidden="true">3.</strong> Mapping Errors</a></li><li><a href="tutorial4.html"><strong aria-hidden="true">4.</strong> Saving coding chars</a></li><li><a href="tutorial5.html" class="active"><strong aria-hidden="true">5.</strong> The source() of Errors</a></li><li><a href="tutorial6.html"><strong aria-hidden="true">6.</strong> Downcast the Errors</a></li><li><a href="tutorial7.html"><strong aria-hidden="true">7.</strong> The root cause of all Errors</a></li><li><a href="tutorial8.html"><strong aria-hidden="true">8.</strong> Finding an Error cause</a></li><li><a href="tutorial9.html"><strong aria-hidden="true">9.</strong> Selective Error Handling</a></li><li><a href="tutorial10.html"><strong aria-hidden="true">10.</strong> ErrorKind to the rescue</a></li><li><a href="tutorial11.html"><strong aria-hidden="true">11.</strong> Debug for the ErrorKind</a></li><li><a href="tutorial12.html"><strong aria-hidden="true">12.</strong> Deref for the ErrorKind</a></li><li class="affix"><a href="end.html">The End</a></li></ol>
|
||||
<ol class="chapter"><li class="affix"><a href="index.html">chainerror</a></li><li><a href="tutorial1.html"><strong aria-hidden="true">1.</strong> Simple String Errors</a></li><li><a href="tutorial2.html"><strong aria-hidden="true">2.</strong> Simple Chained String Errors</a></li><li><a href="tutorial3.html"><strong aria-hidden="true">3.</strong> Mapping Errors</a></li><li><a href="tutorial4.html"><strong aria-hidden="true">4.</strong> Saving coding chars</a></li><li><a href="tutorial5.html" class="active"><strong aria-hidden="true">5.</strong> The source() of Errors</a></li><li><a href="tutorial6.html"><strong aria-hidden="true">6.</strong> Downcast the Errors</a></li><li><a href="tutorial7.html"><strong aria-hidden="true">7.</strong> The root cause of all Errors</a></li><li><a href="tutorial8.html"><strong aria-hidden="true">8.</strong> Finding an Error cause</a></li><li><a href="tutorial9.html"><strong aria-hidden="true">9.</strong> Selective Error Handling</a></li><li><a href="tutorial10.html"><strong aria-hidden="true">10.</strong> ErrorKind to the rescue</a></li><li><a href="tutorial11.html"><strong aria-hidden="true">11.</strong> Debug for the ErrorKind</a></li><li><a href="tutorial12.html"><strong aria-hidden="true">12.</strong> Deref for the ErrorKind</a></li><li><a href="tutorial13.html"><strong aria-hidden="true">13.</strong> Writing a library</a></li><li class="affix"><a href="end.html">The End</a></li></ol>
|
||||
</nav>
|
||||
|
||||
<div id="page-wrapper" class="page-wrapper">
|
||||
|
|
@ -143,7 +143,7 @@
|
|||
<a class="header" href="#the-source-of-errors" id="the-source-of-errors"><h1>The source() of Errors</h1></a>
|
||||
<p>Sometimes you want to inspect the <code>source()</code> of an <code>Error</code>.
|
||||
<code>chainerror</code> implements <code>std::error::Error::source()</code>, so you can get the cause of an error.</p>
|
||||
<pre><pre class="playpen"><code class="language-rust">use crate::chainerror::*;
|
||||
<pre><pre class="playpen"><code class="language-rust">use chainerror::*;
|
||||
use std::error::Error;
|
||||
use std::io;
|
||||
use std::result::Result;
|
||||
|
|
@ -175,6 +175,7 @@ fn main() -> Result<(), Box<Error>> {
|
|||
}
|
||||
Ok(())
|
||||
}
|
||||
|
||||
# #[allow(dead_code)]
|
||||
# mod chainerror {
|
||||
# //! `chainerror` provides an error backtrace without doing a real backtrace, so even after you `strip` your
|
||||
|
|
@ -863,15 +864,9 @@ fn main() -> Result<(), Box<Error>> {
|
|||
# ( None, $fmt:expr, $($arg:tt)+ ) => ({
|
||||
# cherr!(None, format!($fmt, $($arg)+ ))
|
||||
# });
|
||||
# ( $e:ident, $k:expr ) => ({
|
||||
# ChainError::<_>::new($k, Some(Box::from($e)), Some((line!(), file!())))
|
||||
# });
|
||||
# ( $e:path, $k:expr ) => ({
|
||||
# ChainError::<_>::new($k, Some(Box::from($e)), Some((line!(), file!())))
|
||||
# });
|
||||
# ( $e:ident, $fmt:expr, $($arg:tt)+ ) => ({
|
||||
# cherr!($e, format!($fmt, $($arg)+ ))
|
||||
# });
|
||||
# ( $e:path, $fmt:expr, $($arg:tt)+ ) => ({
|
||||
# cherr!($e, format!($fmt, $($arg)+ ))
|
||||
# });
|
||||
|
|
@ -966,21 +961,12 @@ fn main() -> Result<(), Box<Error>> {
|
|||
# /// ~~~
|
||||
# #[macro_export]
|
||||
# macro_rules! mstrerr {
|
||||
# ( $t:ident, $msg:expr ) => ({
|
||||
# |e| cherr!(e, $t ($msg.to_string()))
|
||||
# });
|
||||
# ( $t:path, $msg:expr ) => ({
|
||||
# |e| cherr!(e, $t ($msg.to_string()))
|
||||
# });
|
||||
# ( $t:ident, $msg:expr, ) => ({
|
||||
# |e| cherr!(e, $t ($msg.to_string()))
|
||||
# });
|
||||
# ( $t:path, $msg:expr, ) => ({
|
||||
# |e| cherr!(e, $t ($msg.to_string()))
|
||||
# });
|
||||
# ( $t:ident, $fmt:expr, $($arg:tt)+ ) => ({
|
||||
# |e| cherr!(e, $t (format!($fmt, $($arg)+ )))
|
||||
# });
|
||||
# ( $t:path, $fmt:expr, $($arg:tt)+ ) => ({
|
||||
# |e| cherr!(e, $t (format!($fmt, $($arg)+ )))
|
||||
# });
|
||||
|
|
@ -1033,21 +1019,12 @@ fn main() -> Result<(), Box<Error>> {
|
|||
# /// ~~~
|
||||
# #[macro_export]
|
||||
# macro_rules! strerr {
|
||||
# ( $t:ident, $msg:expr ) => ({
|
||||
# cherr!($t ($msg.to_string()))
|
||||
# });
|
||||
# ( $t:path, $msg:expr ) => ({
|
||||
# cherr!($t ($msg.to_string()))
|
||||
# });
|
||||
# ( $t:ident, $msg:expr, ) => ({
|
||||
# cherr!($t ($msg.to_string()))
|
||||
# });
|
||||
# ( $t:path, $msg:expr, ) => ({
|
||||
# cherr!($t ($msg.to_string()))
|
||||
# });
|
||||
# ( $t:ident, $fmt:expr, $($arg:tt)+ ) => ({
|
||||
# cherr!($t (format!($fmt, $($arg)+ )))
|
||||
# });
|
||||
# ( $t:path, $fmt:expr, $($arg:tt)+ ) => ({
|
||||
# cherr!($t (format!($fmt, $($arg)+ )))
|
||||
# });
|
||||
|
|
|
|||
|
|
@ -75,7 +75,7 @@
|
|||
</script>
|
||||
|
||||
<nav id="sidebar" class="sidebar" aria-label="Table of contents">
|
||||
<ol class="chapter"><li class="affix"><a href="index.html">chainerror</a></li><li><a href="tutorial1.html"><strong aria-hidden="true">1.</strong> Simple String Errors</a></li><li><a href="tutorial2.html"><strong aria-hidden="true">2.</strong> Simple Chained String Errors</a></li><li><a href="tutorial3.html"><strong aria-hidden="true">3.</strong> Mapping Errors</a></li><li><a href="tutorial4.html"><strong aria-hidden="true">4.</strong> Saving coding chars</a></li><li><a href="tutorial5.html"><strong aria-hidden="true">5.</strong> The source() of Errors</a></li><li><a href="tutorial6.html" class="active"><strong aria-hidden="true">6.</strong> Downcast the Errors</a></li><li><a href="tutorial7.html"><strong aria-hidden="true">7.</strong> The root cause of all Errors</a></li><li><a href="tutorial8.html"><strong aria-hidden="true">8.</strong> Finding an Error cause</a></li><li><a href="tutorial9.html"><strong aria-hidden="true">9.</strong> Selective Error Handling</a></li><li><a href="tutorial10.html"><strong aria-hidden="true">10.</strong> ErrorKind to the rescue</a></li><li><a href="tutorial11.html"><strong aria-hidden="true">11.</strong> Debug for the ErrorKind</a></li><li><a href="tutorial12.html"><strong aria-hidden="true">12.</strong> Deref for the ErrorKind</a></li><li class="affix"><a href="end.html">The End</a></li></ol>
|
||||
<ol class="chapter"><li class="affix"><a href="index.html">chainerror</a></li><li><a href="tutorial1.html"><strong aria-hidden="true">1.</strong> Simple String Errors</a></li><li><a href="tutorial2.html"><strong aria-hidden="true">2.</strong> Simple Chained String Errors</a></li><li><a href="tutorial3.html"><strong aria-hidden="true">3.</strong> Mapping Errors</a></li><li><a href="tutorial4.html"><strong aria-hidden="true">4.</strong> Saving coding chars</a></li><li><a href="tutorial5.html"><strong aria-hidden="true">5.</strong> The source() of Errors</a></li><li><a href="tutorial6.html" class="active"><strong aria-hidden="true">6.</strong> Downcast the Errors</a></li><li><a href="tutorial7.html"><strong aria-hidden="true">7.</strong> The root cause of all Errors</a></li><li><a href="tutorial8.html"><strong aria-hidden="true">8.</strong> Finding an Error cause</a></li><li><a href="tutorial9.html"><strong aria-hidden="true">9.</strong> Selective Error Handling</a></li><li><a href="tutorial10.html"><strong aria-hidden="true">10.</strong> ErrorKind to the rescue</a></li><li><a href="tutorial11.html"><strong aria-hidden="true">11.</strong> Debug for the ErrorKind</a></li><li><a href="tutorial12.html"><strong aria-hidden="true">12.</strong> Deref for the ErrorKind</a></li><li><a href="tutorial13.html"><strong aria-hidden="true">13.</strong> Writing a library</a></li><li class="affix"><a href="end.html">The End</a></li></ol>
|
||||
</nav>
|
||||
|
||||
<div id="page-wrapper" class="page-wrapper">
|
||||
|
|
@ -147,7 +147,7 @@
|
|||
pub fn downcast_mut<T: Error + 'static>(&mut self) -> Option<&mut T>
|
||||
</code></pre>
|
||||
<p>This is how it looks like, when using those:</p>
|
||||
<pre><pre class="playpen"><code class="language-rust">use crate::chainerror::*;
|
||||
<pre><pre class="playpen"><code class="language-rust">use chainerror::*;
|
||||
use std::error::Error;
|
||||
use std::io;
|
||||
use std::result::Result;
|
||||
|
|
@ -187,6 +187,7 @@ fn main() -> Result<(), Box<Error>> {
|
|||
}
|
||||
Ok(())
|
||||
}
|
||||
|
||||
# #[allow(dead_code)]
|
||||
# mod chainerror {
|
||||
# //! `chainerror` provides an error backtrace without doing a real backtrace, so even after you `strip` your
|
||||
|
|
@ -875,15 +876,9 @@ fn main() -> Result<(), Box<Error>> {
|
|||
# ( None, $fmt:expr, $($arg:tt)+ ) => ({
|
||||
# cherr!(None, format!($fmt, $($arg)+ ))
|
||||
# });
|
||||
# ( $e:ident, $k:expr ) => ({
|
||||
# ChainError::<_>::new($k, Some(Box::from($e)), Some((line!(), file!())))
|
||||
# });
|
||||
# ( $e:path, $k:expr ) => ({
|
||||
# ChainError::<_>::new($k, Some(Box::from($e)), Some((line!(), file!())))
|
||||
# });
|
||||
# ( $e:ident, $fmt:expr, $($arg:tt)+ ) => ({
|
||||
# cherr!($e, format!($fmt, $($arg)+ ))
|
||||
# });
|
||||
# ( $e:path, $fmt:expr, $($arg:tt)+ ) => ({
|
||||
# cherr!($e, format!($fmt, $($arg)+ ))
|
||||
# });
|
||||
|
|
@ -978,21 +973,12 @@ fn main() -> Result<(), Box<Error>> {
|
|||
# /// ~~~
|
||||
# #[macro_export]
|
||||
# macro_rules! mstrerr {
|
||||
# ( $t:ident, $msg:expr ) => ({
|
||||
# |e| cherr!(e, $t ($msg.to_string()))
|
||||
# });
|
||||
# ( $t:path, $msg:expr ) => ({
|
||||
# |e| cherr!(e, $t ($msg.to_string()))
|
||||
# });
|
||||
# ( $t:ident, $msg:expr, ) => ({
|
||||
# |e| cherr!(e, $t ($msg.to_string()))
|
||||
# });
|
||||
# ( $t:path, $msg:expr, ) => ({
|
||||
# |e| cherr!(e, $t ($msg.to_string()))
|
||||
# });
|
||||
# ( $t:ident, $fmt:expr, $($arg:tt)+ ) => ({
|
||||
# |e| cherr!(e, $t (format!($fmt, $($arg)+ )))
|
||||
# });
|
||||
# ( $t:path, $fmt:expr, $($arg:tt)+ ) => ({
|
||||
# |e| cherr!(e, $t (format!($fmt, $($arg)+ )))
|
||||
# });
|
||||
|
|
@ -1045,21 +1031,12 @@ fn main() -> Result<(), Box<Error>> {
|
|||
# /// ~~~
|
||||
# #[macro_export]
|
||||
# macro_rules! strerr {
|
||||
# ( $t:ident, $msg:expr ) => ({
|
||||
# cherr!($t ($msg.to_string()))
|
||||
# });
|
||||
# ( $t:path, $msg:expr ) => ({
|
||||
# cherr!($t ($msg.to_string()))
|
||||
# });
|
||||
# ( $t:ident, $msg:expr, ) => ({
|
||||
# cherr!($t ($msg.to_string()))
|
||||
# });
|
||||
# ( $t:path, $msg:expr, ) => ({
|
||||
# cherr!($t ($msg.to_string()))
|
||||
# });
|
||||
# ( $t:ident, $fmt:expr, $($arg:tt)+ ) => ({
|
||||
# cherr!($t (format!($fmt, $($arg)+ )))
|
||||
# });
|
||||
# ( $t:path, $fmt:expr, $($arg:tt)+ ) => ({
|
||||
# cherr!($t (format!($fmt, $($arg)+ )))
|
||||
# });
|
||||
|
|
|
|||
|
|
@ -75,7 +75,7 @@
|
|||
</script>
|
||||
|
||||
<nav id="sidebar" class="sidebar" aria-label="Table of contents">
|
||||
<ol class="chapter"><li class="affix"><a href="index.html">chainerror</a></li><li><a href="tutorial1.html"><strong aria-hidden="true">1.</strong> Simple String Errors</a></li><li><a href="tutorial2.html"><strong aria-hidden="true">2.</strong> Simple Chained String Errors</a></li><li><a href="tutorial3.html"><strong aria-hidden="true">3.</strong> Mapping Errors</a></li><li><a href="tutorial4.html"><strong aria-hidden="true">4.</strong> Saving coding chars</a></li><li><a href="tutorial5.html"><strong aria-hidden="true">5.</strong> The source() of Errors</a></li><li><a href="tutorial6.html"><strong aria-hidden="true">6.</strong> Downcast the Errors</a></li><li><a href="tutorial7.html" class="active"><strong aria-hidden="true">7.</strong> The root cause of all Errors</a></li><li><a href="tutorial8.html"><strong aria-hidden="true">8.</strong> Finding an Error cause</a></li><li><a href="tutorial9.html"><strong aria-hidden="true">9.</strong> Selective Error Handling</a></li><li><a href="tutorial10.html"><strong aria-hidden="true">10.</strong> ErrorKind to the rescue</a></li><li><a href="tutorial11.html"><strong aria-hidden="true">11.</strong> Debug for the ErrorKind</a></li><li><a href="tutorial12.html"><strong aria-hidden="true">12.</strong> Deref for the ErrorKind</a></li><li class="affix"><a href="end.html">The End</a></li></ol>
|
||||
<ol class="chapter"><li class="affix"><a href="index.html">chainerror</a></li><li><a href="tutorial1.html"><strong aria-hidden="true">1.</strong> Simple String Errors</a></li><li><a href="tutorial2.html"><strong aria-hidden="true">2.</strong> Simple Chained String Errors</a></li><li><a href="tutorial3.html"><strong aria-hidden="true">3.</strong> Mapping Errors</a></li><li><a href="tutorial4.html"><strong aria-hidden="true">4.</strong> Saving coding chars</a></li><li><a href="tutorial5.html"><strong aria-hidden="true">5.</strong> The source() of Errors</a></li><li><a href="tutorial6.html"><strong aria-hidden="true">6.</strong> Downcast the Errors</a></li><li><a href="tutorial7.html" class="active"><strong aria-hidden="true">7.</strong> The root cause of all Errors</a></li><li><a href="tutorial8.html"><strong aria-hidden="true">8.</strong> Finding an Error cause</a></li><li><a href="tutorial9.html"><strong aria-hidden="true">9.</strong> Selective Error Handling</a></li><li><a href="tutorial10.html"><strong aria-hidden="true">10.</strong> ErrorKind to the rescue</a></li><li><a href="tutorial11.html"><strong aria-hidden="true">11.</strong> Debug for the ErrorKind</a></li><li><a href="tutorial12.html"><strong aria-hidden="true">12.</strong> Deref for the ErrorKind</a></li><li><a href="tutorial13.html"><strong aria-hidden="true">13.</strong> Writing a library</a></li><li class="affix"><a href="end.html">The End</a></li></ol>
|
||||
</nav>
|
||||
|
||||
<div id="page-wrapper" class="page-wrapper">
|
||||
|
|
@ -158,7 +158,7 @@ to call <code>.find_cause::<io::Error>()</code>.</p>
|
|||
<p>or to use <code>.root_cause()</code>, which of course can be of any type implementing <code>std::error::Error</code>.</p>
|
||||
<pre><code class="language-rust ignore"> if let Some(e) = s.root_cause() {
|
||||
</code></pre>
|
||||
<pre><pre class="playpen"><code class="language-rust">use crate::chainerror::*;
|
||||
<pre><pre class="playpen"><code class="language-rust">use chainerror::*;
|
||||
use std::error::Error;
|
||||
use std::io;
|
||||
use std::result::Result;
|
||||
|
|
@ -199,6 +199,7 @@ fn main() -> Result<(), Box<Error>> {
|
|||
}
|
||||
Ok(())
|
||||
}
|
||||
|
||||
# #[allow(dead_code)]
|
||||
# mod chainerror {
|
||||
# //! `chainerror` provides an error backtrace without doing a real backtrace, so even after you `strip` your
|
||||
|
|
@ -887,15 +888,9 @@ fn main() -> Result<(), Box<Error>> {
|
|||
# ( None, $fmt:expr, $($arg:tt)+ ) => ({
|
||||
# cherr!(None, format!($fmt, $($arg)+ ))
|
||||
# });
|
||||
# ( $e:ident, $k:expr ) => ({
|
||||
# ChainError::<_>::new($k, Some(Box::from($e)), Some((line!(), file!())))
|
||||
# });
|
||||
# ( $e:path, $k:expr ) => ({
|
||||
# ChainError::<_>::new($k, Some(Box::from($e)), Some((line!(), file!())))
|
||||
# });
|
||||
# ( $e:ident, $fmt:expr, $($arg:tt)+ ) => ({
|
||||
# cherr!($e, format!($fmt, $($arg)+ ))
|
||||
# });
|
||||
# ( $e:path, $fmt:expr, $($arg:tt)+ ) => ({
|
||||
# cherr!($e, format!($fmt, $($arg)+ ))
|
||||
# });
|
||||
|
|
@ -990,21 +985,12 @@ fn main() -> Result<(), Box<Error>> {
|
|||
# /// ~~~
|
||||
# #[macro_export]
|
||||
# macro_rules! mstrerr {
|
||||
# ( $t:ident, $msg:expr ) => ({
|
||||
# |e| cherr!(e, $t ($msg.to_string()))
|
||||
# });
|
||||
# ( $t:path, $msg:expr ) => ({
|
||||
# |e| cherr!(e, $t ($msg.to_string()))
|
||||
# });
|
||||
# ( $t:ident, $msg:expr, ) => ({
|
||||
# |e| cherr!(e, $t ($msg.to_string()))
|
||||
# });
|
||||
# ( $t:path, $msg:expr, ) => ({
|
||||
# |e| cherr!(e, $t ($msg.to_string()))
|
||||
# });
|
||||
# ( $t:ident, $fmt:expr, $($arg:tt)+ ) => ({
|
||||
# |e| cherr!(e, $t (format!($fmt, $($arg)+ )))
|
||||
# });
|
||||
# ( $t:path, $fmt:expr, $($arg:tt)+ ) => ({
|
||||
# |e| cherr!(e, $t (format!($fmt, $($arg)+ )))
|
||||
# });
|
||||
|
|
@ -1057,21 +1043,12 @@ fn main() -> Result<(), Box<Error>> {
|
|||
# /// ~~~
|
||||
# #[macro_export]
|
||||
# macro_rules! strerr {
|
||||
# ( $t:ident, $msg:expr ) => ({
|
||||
# cherr!($t ($msg.to_string()))
|
||||
# });
|
||||
# ( $t:path, $msg:expr ) => ({
|
||||
# cherr!($t ($msg.to_string()))
|
||||
# });
|
||||
# ( $t:ident, $msg:expr, ) => ({
|
||||
# cherr!($t ($msg.to_string()))
|
||||
# });
|
||||
# ( $t:path, $msg:expr, ) => ({
|
||||
# cherr!($t ($msg.to_string()))
|
||||
# });
|
||||
# ( $t:ident, $fmt:expr, $($arg:tt)+ ) => ({
|
||||
# cherr!($t (format!($fmt, $($arg)+ )))
|
||||
# });
|
||||
# ( $t:path, $fmt:expr, $($arg:tt)+ ) => ({
|
||||
# cherr!($t (format!($fmt, $($arg)+ )))
|
||||
# });
|
||||
|
|
|
|||
|
|
@ -75,7 +75,7 @@
|
|||
</script>
|
||||
|
||||
<nav id="sidebar" class="sidebar" aria-label="Table of contents">
|
||||
<ol class="chapter"><li class="affix"><a href="index.html">chainerror</a></li><li><a href="tutorial1.html"><strong aria-hidden="true">1.</strong> Simple String Errors</a></li><li><a href="tutorial2.html"><strong aria-hidden="true">2.</strong> Simple Chained String Errors</a></li><li><a href="tutorial3.html"><strong aria-hidden="true">3.</strong> Mapping Errors</a></li><li><a href="tutorial4.html"><strong aria-hidden="true">4.</strong> Saving coding chars</a></li><li><a href="tutorial5.html"><strong aria-hidden="true">5.</strong> The source() of Errors</a></li><li><a href="tutorial6.html"><strong aria-hidden="true">6.</strong> Downcast the Errors</a></li><li><a href="tutorial7.html"><strong aria-hidden="true">7.</strong> The root cause of all Errors</a></li><li><a href="tutorial8.html" class="active"><strong aria-hidden="true">8.</strong> Finding an Error cause</a></li><li><a href="tutorial9.html"><strong aria-hidden="true">9.</strong> Selective Error Handling</a></li><li><a href="tutorial10.html"><strong aria-hidden="true">10.</strong> ErrorKind to the rescue</a></li><li><a href="tutorial11.html"><strong aria-hidden="true">11.</strong> Debug for the ErrorKind</a></li><li><a href="tutorial12.html"><strong aria-hidden="true">12.</strong> Deref for the ErrorKind</a></li><li class="affix"><a href="end.html">The End</a></li></ol>
|
||||
<ol class="chapter"><li class="affix"><a href="index.html">chainerror</a></li><li><a href="tutorial1.html"><strong aria-hidden="true">1.</strong> Simple String Errors</a></li><li><a href="tutorial2.html"><strong aria-hidden="true">2.</strong> Simple Chained String Errors</a></li><li><a href="tutorial3.html"><strong aria-hidden="true">3.</strong> Mapping Errors</a></li><li><a href="tutorial4.html"><strong aria-hidden="true">4.</strong> Saving coding chars</a></li><li><a href="tutorial5.html"><strong aria-hidden="true">5.</strong> The source() of Errors</a></li><li><a href="tutorial6.html"><strong aria-hidden="true">6.</strong> Downcast the Errors</a></li><li><a href="tutorial7.html"><strong aria-hidden="true">7.</strong> The root cause of all Errors</a></li><li><a href="tutorial8.html" class="active"><strong aria-hidden="true">8.</strong> Finding an Error cause</a></li><li><a href="tutorial9.html"><strong aria-hidden="true">9.</strong> Selective Error Handling</a></li><li><a href="tutorial10.html"><strong aria-hidden="true">10.</strong> ErrorKind to the rescue</a></li><li><a href="tutorial11.html"><strong aria-hidden="true">11.</strong> Debug for the ErrorKind</a></li><li><a href="tutorial12.html"><strong aria-hidden="true">12.</strong> Deref for the ErrorKind</a></li><li><a href="tutorial13.html"><strong aria-hidden="true">13.</strong> Writing a library</a></li><li class="affix"><a href="end.html">The End</a></li></ol>
|
||||
</nav>
|
||||
|
||||
<div id="page-wrapper" class="page-wrapper">
|
||||
|
|
@ -155,7 +155,7 @@ derive_str_cherr!(Func1Error);
|
|||
<pre><code class="language-rust ignore"> if let Some(f2err) = f1err.find_cause::<ChainError<Func2Error>>() {
|
||||
</code></pre>
|
||||
<p>hiding the <code>ChainError<T></code> implementation detail.</p>
|
||||
<pre><pre class="playpen"><code class="language-rust">use crate::chainerror::*;
|
||||
<pre><pre class="playpen"><code class="language-rust">use chainerror::*;
|
||||
use std::error::Error;
|
||||
use std::io;
|
||||
use std::result::Result;
|
||||
|
|
@ -196,6 +196,7 @@ fn main() -> Result<(), Box<Error>> {
|
|||
}
|
||||
Ok(())
|
||||
}
|
||||
|
||||
# #[allow(dead_code)]
|
||||
# mod chainerror {
|
||||
# //! `chainerror` provides an error backtrace without doing a real backtrace, so even after you `strip` your
|
||||
|
|
@ -884,15 +885,9 @@ fn main() -> Result<(), Box<Error>> {
|
|||
# ( None, $fmt:expr, $($arg:tt)+ ) => ({
|
||||
# cherr!(None, format!($fmt, $($arg)+ ))
|
||||
# });
|
||||
# ( $e:ident, $k:expr ) => ({
|
||||
# ChainError::<_>::new($k, Some(Box::from($e)), Some((line!(), file!())))
|
||||
# });
|
||||
# ( $e:path, $k:expr ) => ({
|
||||
# ChainError::<_>::new($k, Some(Box::from($e)), Some((line!(), file!())))
|
||||
# });
|
||||
# ( $e:ident, $fmt:expr, $($arg:tt)+ ) => ({
|
||||
# cherr!($e, format!($fmt, $($arg)+ ))
|
||||
# });
|
||||
# ( $e:path, $fmt:expr, $($arg:tt)+ ) => ({
|
||||
# cherr!($e, format!($fmt, $($arg)+ ))
|
||||
# });
|
||||
|
|
@ -987,21 +982,12 @@ fn main() -> Result<(), Box<Error>> {
|
|||
# /// ~~~
|
||||
# #[macro_export]
|
||||
# macro_rules! mstrerr {
|
||||
# ( $t:ident, $msg:expr ) => ({
|
||||
# |e| cherr!(e, $t ($msg.to_string()))
|
||||
# });
|
||||
# ( $t:path, $msg:expr ) => ({
|
||||
# |e| cherr!(e, $t ($msg.to_string()))
|
||||
# });
|
||||
# ( $t:ident, $msg:expr, ) => ({
|
||||
# |e| cherr!(e, $t ($msg.to_string()))
|
||||
# });
|
||||
# ( $t:path, $msg:expr, ) => ({
|
||||
# |e| cherr!(e, $t ($msg.to_string()))
|
||||
# });
|
||||
# ( $t:ident, $fmt:expr, $($arg:tt)+ ) => ({
|
||||
# |e| cherr!(e, $t (format!($fmt, $($arg)+ )))
|
||||
# });
|
||||
# ( $t:path, $fmt:expr, $($arg:tt)+ ) => ({
|
||||
# |e| cherr!(e, $t (format!($fmt, $($arg)+ )))
|
||||
# });
|
||||
|
|
@ -1054,21 +1040,12 @@ fn main() -> Result<(), Box<Error>> {
|
|||
# /// ~~~
|
||||
# #[macro_export]
|
||||
# macro_rules! strerr {
|
||||
# ( $t:ident, $msg:expr ) => ({
|
||||
# cherr!($t ($msg.to_string()))
|
||||
# });
|
||||
# ( $t:path, $msg:expr ) => ({
|
||||
# cherr!($t ($msg.to_string()))
|
||||
# });
|
||||
# ( $t:ident, $msg:expr, ) => ({
|
||||
# cherr!($t ($msg.to_string()))
|
||||
# });
|
||||
# ( $t:path, $msg:expr, ) => ({
|
||||
# cherr!($t ($msg.to_string()))
|
||||
# });
|
||||
# ( $t:ident, $fmt:expr, $($arg:tt)+ ) => ({
|
||||
# cherr!($t (format!($fmt, $($arg)+ )))
|
||||
# });
|
||||
# ( $t:path, $fmt:expr, $($arg:tt)+ ) => ({
|
||||
# cherr!($t (format!($fmt, $($arg)+ )))
|
||||
# });
|
||||
|
|
|
|||
|
|
@ -75,7 +75,7 @@
|
|||
</script>
|
||||
|
||||
<nav id="sidebar" class="sidebar" aria-label="Table of contents">
|
||||
<ol class="chapter"><li class="affix"><a href="index.html">chainerror</a></li><li><a href="tutorial1.html"><strong aria-hidden="true">1.</strong> Simple String Errors</a></li><li><a href="tutorial2.html"><strong aria-hidden="true">2.</strong> Simple Chained String Errors</a></li><li><a href="tutorial3.html"><strong aria-hidden="true">3.</strong> Mapping Errors</a></li><li><a href="tutorial4.html"><strong aria-hidden="true">4.</strong> Saving coding chars</a></li><li><a href="tutorial5.html"><strong aria-hidden="true">5.</strong> The source() of Errors</a></li><li><a href="tutorial6.html"><strong aria-hidden="true">6.</strong> Downcast the Errors</a></li><li><a href="tutorial7.html"><strong aria-hidden="true">7.</strong> The root cause of all Errors</a></li><li><a href="tutorial8.html"><strong aria-hidden="true">8.</strong> Finding an Error cause</a></li><li><a href="tutorial9.html" class="active"><strong aria-hidden="true">9.</strong> Selective Error Handling</a></li><li><a href="tutorial10.html"><strong aria-hidden="true">10.</strong> ErrorKind to the rescue</a></li><li><a href="tutorial11.html"><strong aria-hidden="true">11.</strong> Debug for the ErrorKind</a></li><li><a href="tutorial12.html"><strong aria-hidden="true">12.</strong> Deref for the ErrorKind</a></li><li class="affix"><a href="end.html">The End</a></li></ol>
|
||||
<ol class="chapter"><li class="affix"><a href="index.html">chainerror</a></li><li><a href="tutorial1.html"><strong aria-hidden="true">1.</strong> Simple String Errors</a></li><li><a href="tutorial2.html"><strong aria-hidden="true">2.</strong> Simple Chained String Errors</a></li><li><a href="tutorial3.html"><strong aria-hidden="true">3.</strong> Mapping Errors</a></li><li><a href="tutorial4.html"><strong aria-hidden="true">4.</strong> Saving coding chars</a></li><li><a href="tutorial5.html"><strong aria-hidden="true">5.</strong> The source() of Errors</a></li><li><a href="tutorial6.html"><strong aria-hidden="true">6.</strong> Downcast the Errors</a></li><li><a href="tutorial7.html"><strong aria-hidden="true">7.</strong> The root cause of all Errors</a></li><li><a href="tutorial8.html"><strong aria-hidden="true">8.</strong> Finding an Error cause</a></li><li><a href="tutorial9.html" class="active"><strong aria-hidden="true">9.</strong> Selective Error Handling</a></li><li><a href="tutorial10.html"><strong aria-hidden="true">10.</strong> ErrorKind to the rescue</a></li><li><a href="tutorial11.html"><strong aria-hidden="true">11.</strong> Debug for the ErrorKind</a></li><li><a href="tutorial12.html"><strong aria-hidden="true">12.</strong> Deref for the ErrorKind</a></li><li><a href="tutorial13.html"><strong aria-hidden="true">13.</strong> Writing a library</a></li><li class="affix"><a href="end.html">The End</a></li></ol>
|
||||
</nav>
|
||||
|
||||
<div id="page-wrapper" class="page-wrapper">
|
||||
|
|
@ -159,7 +159,7 @@
|
|||
</code></pre>
|
||||
<p>but this is not valid rust code, so we end up doing it the hard way.
|
||||
In the next chapter, we will see, how to solve this more elegantly.</p>
|
||||
<pre><pre class="playpen"><code class="language-rust">use crate::chainerror::*;
|
||||
<pre><pre class="playpen"><code class="language-rust">use chainerror::*;
|
||||
use std::error::Error;
|
||||
use std::io;
|
||||
use std::result::Result;
|
||||
|
|
@ -199,6 +199,7 @@ fn main() -> Result<(), Box<Error>> {
|
|||
}
|
||||
Ok(())
|
||||
}
|
||||
|
||||
# #[allow(dead_code)]
|
||||
# mod chainerror {
|
||||
# //! `chainerror` provides an error backtrace without doing a real backtrace, so even after you `strip` your
|
||||
|
|
@ -887,15 +888,9 @@ fn main() -> Result<(), Box<Error>> {
|
|||
# ( None, $fmt:expr, $($arg:tt)+ ) => ({
|
||||
# cherr!(None, format!($fmt, $($arg)+ ))
|
||||
# });
|
||||
# ( $e:ident, $k:expr ) => ({
|
||||
# ChainError::<_>::new($k, Some(Box::from($e)), Some((line!(), file!())))
|
||||
# });
|
||||
# ( $e:path, $k:expr ) => ({
|
||||
# ChainError::<_>::new($k, Some(Box::from($e)), Some((line!(), file!())))
|
||||
# });
|
||||
# ( $e:ident, $fmt:expr, $($arg:tt)+ ) => ({
|
||||
# cherr!($e, format!($fmt, $($arg)+ ))
|
||||
# });
|
||||
# ( $e:path, $fmt:expr, $($arg:tt)+ ) => ({
|
||||
# cherr!($e, format!($fmt, $($arg)+ ))
|
||||
# });
|
||||
|
|
@ -990,21 +985,12 @@ fn main() -> Result<(), Box<Error>> {
|
|||
# /// ~~~
|
||||
# #[macro_export]
|
||||
# macro_rules! mstrerr {
|
||||
# ( $t:ident, $msg:expr ) => ({
|
||||
# |e| cherr!(e, $t ($msg.to_string()))
|
||||
# });
|
||||
# ( $t:path, $msg:expr ) => ({
|
||||
# |e| cherr!(e, $t ($msg.to_string()))
|
||||
# });
|
||||
# ( $t:ident, $msg:expr, ) => ({
|
||||
# |e| cherr!(e, $t ($msg.to_string()))
|
||||
# });
|
||||
# ( $t:path, $msg:expr, ) => ({
|
||||
# |e| cherr!(e, $t ($msg.to_string()))
|
||||
# });
|
||||
# ( $t:ident, $fmt:expr, $($arg:tt)+ ) => ({
|
||||
# |e| cherr!(e, $t (format!($fmt, $($arg)+ )))
|
||||
# });
|
||||
# ( $t:path, $fmt:expr, $($arg:tt)+ ) => ({
|
||||
# |e| cherr!(e, $t (format!($fmt, $($arg)+ )))
|
||||
# });
|
||||
|
|
@ -1057,21 +1043,12 @@ fn main() -> Result<(), Box<Error>> {
|
|||
# /// ~~~
|
||||
# #[macro_export]
|
||||
# macro_rules! strerr {
|
||||
# ( $t:ident, $msg:expr ) => ({
|
||||
# cherr!($t ($msg.to_string()))
|
||||
# });
|
||||
# ( $t:path, $msg:expr ) => ({
|
||||
# cherr!($t ($msg.to_string()))
|
||||
# });
|
||||
# ( $t:ident, $msg:expr, ) => ({
|
||||
# cherr!($t ($msg.to_string()))
|
||||
# });
|
||||
# ( $t:path, $msg:expr, ) => ({
|
||||
# cherr!($t ($msg.to_string()))
|
||||
# });
|
||||
# ( $t:ident, $fmt:expr, $($arg:tt)+ ) => ({
|
||||
# cherr!($t (format!($fmt, $($arg)+ )))
|
||||
# });
|
||||
# ( $t:path, $fmt:expr, $($arg:tt)+ ) => ({
|
||||
# cherr!($t (format!($fmt, $($arg)+ )))
|
||||
# });
|
||||
|
|
|
|||
Loading…
Reference in a new issue