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404.html
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404.html
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<!DOCTYPE HTML>
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<html lang="en" class="sidebar-visible no-js light">
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<head>
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<!-- Book generated using mdBook -->
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<meta charset="UTF-8">
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<title></title>
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<base href="/">
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<meta content="text/html; charset=utf-8" http-equiv="Content-Type">
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<meta name="description" content="A tutorial for the chainerror rust crate.">
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<link rel="stylesheet" href="highlight.css">
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html.classList.add("sidebar-" + sidebar);
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</script>
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<nav id="sidebar" class="sidebar" aria-label="Table of contents">
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<div class="sidebar-scrollbox">
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<ol class="chapter"><li class="chapter-item expanded affix "><a href="index.html">chainerror</a></li><li class="chapter-item expanded "><a href="tutorial1.html"><strong aria-hidden="true">1.</strong> Simple String Errors</a></li><li class="chapter-item expanded "><a href="tutorial2.html"><strong aria-hidden="true">2.</strong> Simple Chained String Errors</a></li><li class="chapter-item expanded "><a href="tutorial3.html"><strong aria-hidden="true">3.</strong> Mapping Errors</a></li><li class="chapter-item expanded "><a href="tutorial4.html"><strong aria-hidden="true">4.</strong> More Information</a></li><li class="chapter-item expanded "><a href="tutorial5.html"><strong aria-hidden="true">5.</strong> The source() of Errors</a></li><li class="chapter-item expanded "><a href="tutorial6.html"><strong aria-hidden="true">6.</strong> Downcast the Errors</a></li><li class="chapter-item expanded "><a href="tutorial7.html"><strong aria-hidden="true">7.</strong> The root cause of all Errors</a></li><li class="chapter-item expanded "><a href="tutorial8.html"><strong aria-hidden="true">8.</strong> Finding an Error cause</a></li><li class="chapter-item expanded "><a href="tutorial9.html"><strong aria-hidden="true">9.</strong> Selective Error Handling</a></li><li class="chapter-item expanded "><a href="tutorial10.html"><strong aria-hidden="true">10.</strong> ErrorKind to the rescue</a></li><li class="chapter-item expanded "><a href="tutorial11.html"><strong aria-hidden="true">11.</strong> Debug for the ErrorKind</a></li><li class="chapter-item expanded "><a href="tutorial12.html"><strong aria-hidden="true">12.</strong> Deref for the ErrorKind</a></li><li class="chapter-item expanded "><a href="tutorial13.html"><strong aria-hidden="true">13.</strong> Writing a library</a></li><li class="chapter-item expanded "><a href="tutorial14.html"><strong aria-hidden="true">14.</strong> Going back to std</a></li><li class="chapter-item expanded affix "><a href="end.html">The End</a></li></ol>
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<h1 class="menu-title">chainerror</h1>
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<script type="text/javascript">
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window.playground_copyable = true;
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</body>
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</html>
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@ -12,8 +12,7 @@ Original by Dempfi (https://github.com/dempfi/ayu)
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|||
}
|
||||
|
||||
.hljs-comment,
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||||
.hljs-quote,
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||||
.hljs-meta {
|
||||
.hljs-quote {
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||||
color: #5c6773;
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||||
font-style: italic;
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}
|
||||
|
|
@ -30,6 +29,7 @@ Original by Dempfi (https://github.com/dempfi/ayu)
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|||
}
|
||||
|
||||
.hljs-number,
|
||||
.hljs-meta,
|
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.hljs-builtin-name,
|
||||
.hljs-literal,
|
||||
.hljs-type,
|
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181
book.js
181
book.js
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@ -4,8 +4,8 @@
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|||
window.onunload = function () { };
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||||
|
||||
// Global variable, shared between modules
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||||
function playpen_text(playpen) {
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||||
let code_block = playpen.querySelector("code");
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||||
function playground_text(playground) {
|
||||
let code_block = playground.querySelector("code");
|
||||
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||||
if (window.ace && code_block.classList.contains("editable")) {
|
||||
let editor = window.ace.edit(code_block);
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||||
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@ -23,8 +23,8 @@ function playpen_text(playpen) {
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|||
]);
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||||
}
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||||
|
||||
var playpens = Array.from(document.querySelectorAll(".playpen"));
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||||
if (playpens.length > 0) {
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||||
var playgrounds = Array.from(document.querySelectorAll(".playground"));
|
||||
if (playgrounds.length > 0) {
|
||||
fetch_with_timeout("https://play.rust-lang.org/meta/crates", {
|
||||
headers: {
|
||||
'Content-Type': "application/json",
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||||
|
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@ -36,21 +36,21 @@ function playpen_text(playpen) {
|
|||
.then(response => {
|
||||
// get list of crates available in the rust playground
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||||
let playground_crates = response.crates.map(item => item["id"]);
|
||||
playpens.forEach(block => handle_crate_list_update(block, playground_crates));
|
||||
playgrounds.forEach(block => handle_crate_list_update(block, playground_crates));
|
||||
});
|
||||
}
|
||||
|
||||
function handle_crate_list_update(playpen_block, playground_crates) {
|
||||
function handle_crate_list_update(playground_block, playground_crates) {
|
||||
// update the play buttons after receiving the response
|
||||
update_play_button(playpen_block, playground_crates);
|
||||
update_play_button(playground_block, playground_crates);
|
||||
|
||||
// and install on change listener to dynamically update ACE editors
|
||||
if (window.ace) {
|
||||
let code_block = playpen_block.querySelector("code");
|
||||
let code_block = playground_block.querySelector("code");
|
||||
if (code_block.classList.contains("editable")) {
|
||||
let editor = window.ace.edit(code_block);
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||||
editor.addEventListener("change", function (e) {
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||||
update_play_button(playpen_block, playground_crates);
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||||
update_play_button(playground_block, playground_crates);
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||||
});
|
||||
// add Ctrl-Enter command to execute rust code
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||||
editor.commands.addCommand({
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||||
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@ -59,7 +59,7 @@ function playpen_text(playpen) {
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|||
win: "Ctrl-Enter",
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||||
mac: "Ctrl-Enter"
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||||
},
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||||
exec: _editor => run_rust_code(playpen_block)
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||||
exec: _editor => run_rust_code(playground_block)
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||||
});
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||||
}
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||||
}
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||||
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@ -77,7 +77,7 @@ function playpen_text(playpen) {
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}
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||||
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||||
// get list of `extern crate`'s from snippet
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||||
var txt = playpen_text(pre_block);
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||||
var txt = playground_text(pre_block);
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||||
var re = /extern\s+crate\s+([a-zA-Z_0-9]+)\s*;/g;
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||||
var snippet_crates = [];
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||||
var item;
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||||
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@ -106,7 +106,7 @@ function playpen_text(playpen) {
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code_block.append(result_block);
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||||
}
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||||
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let text = playpen_text(code_block);
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let text = playground_text(code_block);
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let classes = code_block.querySelector('code').classList;
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||||
let has_2018 = classes.contains("edition2018");
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||||
let edition = has_2018 ? "2018" : "2015";
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||||
|
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@ -143,6 +143,11 @@ function playpen_text(playpen) {
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|||
languages: [], // Languages used for auto-detection
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||||
});
|
||||
|
||||
let code_nodes = Array
|
||||
.from(document.querySelectorAll('code'))
|
||||
// Don't highlight `inline code` blocks in headers.
|
||||
.filter(function (node) {return !node.parentElement.classList.contains("header"); });
|
||||
|
||||
if (window.ace) {
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||||
// language-rust class needs to be removed for editable
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||||
// blocks or highlightjs will capture events
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||||
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@ -154,16 +159,12 @@ function playpen_text(playpen) {
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.from(document.querySelectorAll('code:not(.editable)'))
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||||
.forEach(function (block) { hljs.highlightBlock(block); });
|
||||
} else {
|
||||
Array
|
||||
.from(document.querySelectorAll('code'))
|
||||
.forEach(function (block) { hljs.highlightBlock(block); });
|
||||
code_nodes.forEach(function (block) { hljs.highlightBlock(block); });
|
||||
}
|
||||
|
||||
// Adding the hljs class gives code blocks the color css
|
||||
// even if highlighting doesn't apply
|
||||
Array
|
||||
.from(document.querySelectorAll('code'))
|
||||
.forEach(function (block) { block.classList.add('hljs'); });
|
||||
code_nodes.forEach(function (block) { block.classList.add('hljs'); });
|
||||
|
||||
Array.from(document.querySelectorAll("code.language-rust")).forEach(function (block) {
|
||||
|
||||
|
|
@ -174,23 +175,23 @@ function playpen_text(playpen) {
|
|||
|
||||
var buttons = document.createElement('div');
|
||||
buttons.className = 'buttons';
|
||||
buttons.innerHTML = "<button class=\"fa fa-expand\" title=\"Show hidden lines\" aria-label=\"Show hidden lines\"></button>";
|
||||
buttons.innerHTML = "<button class=\"fa fa-eye\" title=\"Show hidden lines\" aria-label=\"Show hidden lines\"></button>";
|
||||
|
||||
// add expand button
|
||||
var pre_block = block.parentNode;
|
||||
pre_block.insertBefore(buttons, pre_block.firstChild);
|
||||
|
||||
pre_block.querySelector('.buttons').addEventListener('click', function (e) {
|
||||
if (e.target.classList.contains('fa-expand')) {
|
||||
e.target.classList.remove('fa-expand');
|
||||
e.target.classList.add('fa-compress');
|
||||
if (e.target.classList.contains('fa-eye')) {
|
||||
e.target.classList.remove('fa-eye');
|
||||
e.target.classList.add('fa-eye-slash');
|
||||
e.target.title = 'Hide lines';
|
||||
e.target.setAttribute('aria-label', e.target.title);
|
||||
|
||||
block.classList.remove('hide-boring');
|
||||
} else if (e.target.classList.contains('fa-compress')) {
|
||||
e.target.classList.remove('fa-compress');
|
||||
e.target.classList.add('fa-expand');
|
||||
} else if (e.target.classList.contains('fa-eye-slash')) {
|
||||
e.target.classList.remove('fa-eye-slash');
|
||||
e.target.classList.add('fa-eye');
|
||||
e.target.title = 'Show hidden lines';
|
||||
e.target.setAttribute('aria-label', e.target.title);
|
||||
|
||||
|
|
@ -199,10 +200,10 @@ function playpen_text(playpen) {
|
|||
});
|
||||
});
|
||||
|
||||
if (window.playpen_copyable) {
|
||||
if (window.playground_copyable) {
|
||||
Array.from(document.querySelectorAll('pre code')).forEach(function (block) {
|
||||
var pre_block = block.parentNode;
|
||||
if (!pre_block.classList.contains('playpen')) {
|
||||
if (!pre_block.classList.contains('playground')) {
|
||||
var buttons = pre_block.querySelector(".buttons");
|
||||
if (!buttons) {
|
||||
buttons = document.createElement('div');
|
||||
|
|
@ -221,8 +222,8 @@ function playpen_text(playpen) {
|
|||
});
|
||||
}
|
||||
|
||||
// Process playpen code blocks
|
||||
Array.from(document.querySelectorAll(".playpen")).forEach(function (pre_block) {
|
||||
// Process playground code blocks
|
||||
Array.from(document.querySelectorAll(".playground")).forEach(function (pre_block) {
|
||||
// Add play button
|
||||
var buttons = pre_block.querySelector(".buttons");
|
||||
if (!buttons) {
|
||||
|
|
@ -242,7 +243,7 @@ function playpen_text(playpen) {
|
|||
run_rust_code(pre_block);
|
||||
});
|
||||
|
||||
if (window.playpen_copyable) {
|
||||
if (window.playground_copyable) {
|
||||
var copyCodeClipboardButton = document.createElement('button');
|
||||
copyCodeClipboardButton.className = 'fa fa-copy clip-button';
|
||||
copyCodeClipboardButton.innerHTML = '<i class="tooltiptext"></i>';
|
||||
|
|
@ -284,7 +285,7 @@ function playpen_text(playpen) {
|
|||
function showThemes() {
|
||||
themePopup.style.display = 'block';
|
||||
themeToggleButton.setAttribute('aria-expanded', true);
|
||||
themePopup.querySelector("button#" + document.body.className).focus();
|
||||
themePopup.querySelector("button#" + get_theme()).focus();
|
||||
}
|
||||
|
||||
function hideThemes() {
|
||||
|
|
@ -293,6 +294,16 @@ function playpen_text(playpen) {
|
|||
themeToggleButton.focus();
|
||||
}
|
||||
|
||||
function get_theme() {
|
||||
var theme;
|
||||
try { theme = localStorage.getItem('mdbook-theme'); } catch (e) { }
|
||||
if (theme === null || theme === undefined) {
|
||||
return default_theme;
|
||||
} else {
|
||||
return theme;
|
||||
}
|
||||
}
|
||||
|
||||
function set_theme(theme, store = true) {
|
||||
let ace_theme;
|
||||
|
||||
|
|
@ -324,9 +335,7 @@ function playpen_text(playpen) {
|
|||
});
|
||||
}
|
||||
|
||||
var previousTheme;
|
||||
try { previousTheme = localStorage.getItem('mdbook-theme'); } catch (e) { }
|
||||
if (previousTheme === null || previousTheme === undefined) { previousTheme = default_theme; }
|
||||
var previousTheme = get_theme();
|
||||
|
||||
if (store) {
|
||||
try { localStorage.setItem('mdbook-theme', theme); } catch (e) { }
|
||||
|
|
@ -337,9 +346,7 @@ function playpen_text(playpen) {
|
|||
}
|
||||
|
||||
// Set theme
|
||||
var theme;
|
||||
try { theme = localStorage.getItem('mdbook-theme'); } catch(e) { }
|
||||
if (theme === null || theme === undefined) { theme = default_theme; }
|
||||
var theme = get_theme();
|
||||
|
||||
set_theme(theme, false);
|
||||
|
||||
|
|
@ -408,7 +415,6 @@ function playpen_text(playpen) {
|
|||
(function sidebar() {
|
||||
var html = document.querySelector("html");
|
||||
var sidebar = document.getElementById("sidebar");
|
||||
var sidebarScrollBox = document.getElementById("sidebar-scrollbox");
|
||||
var sidebarLinks = document.querySelectorAll('#sidebar a');
|
||||
var sidebarToggleButton = document.getElementById("sidebar-toggle");
|
||||
var sidebarResizeHandle = document.getElementById("sidebar-resize-handle");
|
||||
|
|
@ -450,6 +456,11 @@ function playpen_text(playpen) {
|
|||
// Toggle sidebar
|
||||
sidebarToggleButton.addEventListener('click', function sidebarToggle() {
|
||||
if (html.classList.contains("sidebar-hidden")) {
|
||||
var current_width = parseInt(
|
||||
document.documentElement.style.getPropertyValue('--sidebar-width'), 10);
|
||||
if (current_width < 150) {
|
||||
document.documentElement.style.setProperty('--sidebar-width', '150px');
|
||||
}
|
||||
showSidebar();
|
||||
} else if (html.classList.contains("sidebar-visible")) {
|
||||
hideSidebar();
|
||||
|
|
@ -470,7 +481,16 @@ function playpen_text(playpen) {
|
|||
html.classList.add('sidebar-resizing');
|
||||
}
|
||||
function resize(e) {
|
||||
document.documentElement.style.setProperty('--sidebar-width', (e.clientX - sidebar.offsetLeft) + 'px');
|
||||
var pos = (e.clientX - sidebar.offsetLeft);
|
||||
if (pos < 20) {
|
||||
hideSidebar();
|
||||
} else {
|
||||
if (html.classList.contains("sidebar-hidden")) {
|
||||
showSidebar();
|
||||
}
|
||||
pos = Math.min(pos, window.innerWidth - 100);
|
||||
document.documentElement.style.setProperty('--sidebar-width', pos + 'px');
|
||||
}
|
||||
}
|
||||
//on mouseup remove windows functions mousemove & mouseup
|
||||
function stopResize(e) {
|
||||
|
|
@ -505,9 +525,10 @@ function playpen_text(playpen) {
|
|||
}, { passive: true });
|
||||
|
||||
// Scroll sidebar to current active section
|
||||
var activeSection = sidebar.querySelector(".active");
|
||||
var activeSection = document.getElementById("sidebar").querySelector(".active");
|
||||
if (activeSection) {
|
||||
sidebarScrollBox.scrollTop = activeSection.offsetTop;
|
||||
// https://developer.mozilla.org/en-US/docs/Web/API/Element/scrollIntoView
|
||||
activeSection.scrollIntoView({ block: 'center' });
|
||||
}
|
||||
})();
|
||||
|
||||
|
|
@ -551,8 +572,8 @@ function playpen_text(playpen) {
|
|||
var clipboardSnippets = new ClipboardJS('.clip-button', {
|
||||
text: function (trigger) {
|
||||
hideTooltip(trigger);
|
||||
let playpen = trigger.closest("pre");
|
||||
return playpen_text(playpen);
|
||||
let playground = trigger.closest("pre");
|
||||
return playground_text(playground);
|
||||
}
|
||||
});
|
||||
|
||||
|
|
@ -580,26 +601,60 @@ function playpen_text(playpen) {
|
|||
});
|
||||
})();
|
||||
|
||||
(function autoHideMenu() {
|
||||
(function controllMenu() {
|
||||
var menu = document.getElementById('menu-bar');
|
||||
|
||||
var previousScrollTop = document.scrollingElement.scrollTop;
|
||||
|
||||
document.addEventListener('scroll', function () {
|
||||
if (menu.classList.contains('folded') && document.scrollingElement.scrollTop < previousScrollTop) {
|
||||
menu.classList.remove('folded');
|
||||
} else if (!menu.classList.contains('folded') && document.scrollingElement.scrollTop > previousScrollTop) {
|
||||
menu.classList.add('folded');
|
||||
}
|
||||
|
||||
if (!menu.classList.contains('bordered') && document.scrollingElement.scrollTop > 0) {
|
||||
menu.classList.add('bordered');
|
||||
}
|
||||
|
||||
if (menu.classList.contains('bordered') && document.scrollingElement.scrollTop === 0) {
|
||||
menu.classList.remove('bordered');
|
||||
}
|
||||
|
||||
previousScrollTop = Math.max(document.scrollingElement.scrollTop, 0);
|
||||
}, { passive: true });
|
||||
(function controllPosition() {
|
||||
var scrollTop = document.scrollingElement.scrollTop;
|
||||
var prevScrollTop = scrollTop;
|
||||
var minMenuY = -menu.clientHeight - 50;
|
||||
// When the script loads, the page can be at any scroll (e.g. if you reforesh it).
|
||||
menu.style.top = scrollTop + 'px';
|
||||
// Same as parseInt(menu.style.top.slice(0, -2), but faster
|
||||
var topCache = menu.style.top.slice(0, -2);
|
||||
menu.classList.remove('sticky');
|
||||
var stickyCache = false; // Same as menu.classList.contains('sticky'), but faster
|
||||
document.addEventListener('scroll', function () {
|
||||
scrollTop = Math.max(document.scrollingElement.scrollTop, 0);
|
||||
// `null` means that it doesn't need to be updated
|
||||
var nextSticky = null;
|
||||
var nextTop = null;
|
||||
var scrollDown = scrollTop > prevScrollTop;
|
||||
var menuPosAbsoluteY = topCache - scrollTop;
|
||||
if (scrollDown) {
|
||||
nextSticky = false;
|
||||
if (menuPosAbsoluteY > 0) {
|
||||
nextTop = prevScrollTop;
|
||||
}
|
||||
} else {
|
||||
if (menuPosAbsoluteY > 0) {
|
||||
nextSticky = true;
|
||||
} else if (menuPosAbsoluteY < minMenuY) {
|
||||
nextTop = prevScrollTop + minMenuY;
|
||||
}
|
||||
}
|
||||
if (nextSticky === true && stickyCache === false) {
|
||||
menu.classList.add('sticky');
|
||||
stickyCache = true;
|
||||
} else if (nextSticky === false && stickyCache === true) {
|
||||
menu.classList.remove('sticky');
|
||||
stickyCache = false;
|
||||
}
|
||||
if (nextTop !== null) {
|
||||
menu.style.top = nextTop + 'px';
|
||||
topCache = nextTop;
|
||||
}
|
||||
prevScrollTop = scrollTop;
|
||||
}, { passive: true });
|
||||
})();
|
||||
(function controllBorder() {
|
||||
menu.classList.remove('bordered');
|
||||
document.addEventListener('scroll', function () {
|
||||
if (menu.offsetTop === 0) {
|
||||
menu.classList.remove('bordered');
|
||||
} else {
|
||||
menu.classList.add('bordered');
|
||||
}
|
||||
}, { passive: true });
|
||||
})();
|
||||
})();
|
||||
|
|
|
|||
|
|
@ -20,14 +20,13 @@ a > .hljs {
|
|||
|
||||
/* Menu Bar */
|
||||
|
||||
#menu-bar {
|
||||
position: -webkit-sticky;
|
||||
position: sticky;
|
||||
top: 0;
|
||||
#menu-bar,
|
||||
#menu-bar-hover-placeholder {
|
||||
z-index: 101;
|
||||
margin: auto calc(0px - var(--page-padding));
|
||||
}
|
||||
#menu-bar > #menu-bar-sticky-container {
|
||||
#menu-bar {
|
||||
position: relative;
|
||||
display: flex;
|
||||
flex-wrap: wrap;
|
||||
background-color: var(--bg);
|
||||
|
|
@ -35,10 +34,21 @@ a > .hljs {
|
|||
border-bottom-width: 1px;
|
||||
border-bottom-style: solid;
|
||||
}
|
||||
.js #menu-bar > #menu-bar-sticky-container {
|
||||
transition: transform 0.3s;
|
||||
#menu-bar.sticky,
|
||||
.js #menu-bar-hover-placeholder:hover + #menu-bar,
|
||||
.js #menu-bar:hover,
|
||||
.js.sidebar-visible #menu-bar {
|
||||
position: -webkit-sticky;
|
||||
position: sticky;
|
||||
top: 0 !important;
|
||||
}
|
||||
#menu-bar.bordered > #menu-bar-sticky-container {
|
||||
#menu-bar-hover-placeholder {
|
||||
position: sticky;
|
||||
position: -webkit-sticky;
|
||||
top: 0;
|
||||
height: var(--menu-bar-height);
|
||||
}
|
||||
#menu-bar.bordered {
|
||||
border-bottom-color: var(--table-border-color);
|
||||
}
|
||||
#menu-bar i, #menu-bar .icon-button {
|
||||
|
|
@ -72,10 +82,6 @@ a > .hljs {
|
|||
text-decoration: none;
|
||||
}
|
||||
|
||||
html:not(.sidebar-visible) #menu-bar:not(:hover).folded > #menu-bar-sticky-container {
|
||||
transform: translateY(calc(-10px - var(--menu-bar-height)));
|
||||
}
|
||||
|
||||
.left-buttons {
|
||||
display: flex;
|
||||
margin: 0 5px;
|
||||
|
|
@ -417,6 +423,11 @@ ul#searchresults span.teaser em {
|
|||
display: none;
|
||||
}
|
||||
|
||||
.chapter li.chapter-item {
|
||||
line-height: 1.5em;
|
||||
margin-top: 0.6em;
|
||||
}
|
||||
|
||||
.chapter li.expanded > a.toggle div {
|
||||
transform: rotate(90deg);
|
||||
}
|
||||
|
|
|
|||
|
|
@ -25,11 +25,16 @@ code {
|
|||
font-size: 0.875em; /* please adjust the ace font size accordingly in editor.js */
|
||||
}
|
||||
|
||||
/* Don't change font size in headers. */
|
||||
h1 code, h2 code, h3 code, h4 code, h5 code, h6 code {
|
||||
font-size: unset;
|
||||
}
|
||||
|
||||
.left { float: left; }
|
||||
.right { float: right; }
|
||||
.boring { opacity: 0.6; }
|
||||
.hide-boring .boring { display: none; }
|
||||
.hidden { display: none; }
|
||||
.hidden { display: none !important; }
|
||||
|
||||
h2, h3 { margin-top: 2.5em; }
|
||||
h4, h5 { margin-top: 2em; }
|
||||
|
|
@ -60,6 +65,7 @@ h4 a.header:target {
|
|||
.page {
|
||||
outline: 0;
|
||||
padding: 0 var(--page-padding);
|
||||
margin-top: calc(0px - var(--menu-bar-height)); /* Compensate for the #menu-bar-hover-placeholder */
|
||||
}
|
||||
.page-wrapper {
|
||||
box-sizing: border-box;
|
||||
|
|
@ -78,6 +84,9 @@ h4 a.header:target {
|
|||
margin-right: auto;
|
||||
max-width: var(--content-max-width);
|
||||
}
|
||||
.content p { line-height: 1.45em; }
|
||||
.content ol { line-height: 1.45em; }
|
||||
.content ul { line-height: 1.45em; }
|
||||
.content a { text-decoration: none; }
|
||||
.content a:hover { text-decoration: underline; }
|
||||
.content img { max-width: 100%; }
|
||||
|
|
@ -157,3 +166,9 @@ blockquote {
|
|||
.tooltipped .tooltiptext {
|
||||
visibility: visible;
|
||||
}
|
||||
|
||||
.chapter li.part-title {
|
||||
color: var(--sidebar-fg);
|
||||
margin: 5px 0px;
|
||||
font-weight: bold;
|
||||
}
|
||||
|
|
|
|||
77
end.html
77
end.html
|
|
@ -6,12 +6,23 @@
|
|||
<title>The End - chainerror</title>
|
||||
|
||||
|
||||
|
||||
|
||||
<!-- Custom HTML head -->
|
||||
|
||||
|
||||
|
||||
<meta content="text/html; charset=utf-8" http-equiv="Content-Type">
|
||||
<meta name="description" content="A tutorial for the chainerror rust crate.">
|
||||
<meta name="viewport" content="width=device-width, initial-scale=1">
|
||||
<meta name="theme-color" content="#ffffff" />
|
||||
|
||||
|
||||
<link rel="icon" href="favicon.svg">
|
||||
|
||||
|
||||
<link rel="shortcut icon" href="favicon.png">
|
||||
|
||||
<link rel="stylesheet" href="css/variables.css">
|
||||
<link rel="stylesheet" href="css/general.css">
|
||||
<link rel="stylesheet" href="css/chrome.css">
|
||||
|
|
@ -19,8 +30,9 @@
|
|||
|
||||
<!-- Fonts -->
|
||||
<link rel="stylesheet" href="FontAwesome/css/font-awesome.css">
|
||||
<link href="https://fonts.googleapis.com/css?family=Open+Sans:300italic,400italic,600italic,700italic,800italic,400,300,600,700,800" rel="stylesheet" type="text/css">
|
||||
<link href="https://fonts.googleapis.com/css?family=Source+Code+Pro:500" rel="stylesheet" type="text/css">
|
||||
|
||||
<link rel="stylesheet" href="fonts/fonts.css">
|
||||
|
||||
|
||||
<!-- Highlight.js Stylesheets -->
|
||||
<link rel="stylesheet" href="highlight.css">
|
||||
|
|
@ -36,7 +48,7 @@
|
|||
<!-- Provide site root to javascript -->
|
||||
<script type="text/javascript">
|
||||
var path_to_root = "";
|
||||
var default_theme = window.matchMedia("(prefers-color-scheme: dark)").matches ? "light" : "light";
|
||||
var default_theme = window.matchMedia("(prefers-color-scheme: dark)").matches ? "navy" : "light";
|
||||
</script>
|
||||
|
||||
<!-- Work around some values being stored in localStorage wrapped in quotes -->
|
||||
|
|
@ -80,8 +92,8 @@
|
|||
</script>
|
||||
|
||||
<nav id="sidebar" class="sidebar" aria-label="Table of contents">
|
||||
<div id="sidebar-scrollbox" class="sidebar-scrollbox">
|
||||
<ol class="chapter"><li class="expanded affix "><a href="index.html">chainerror</a></li><li class="expanded "><a href="tutorial1.html"><strong aria-hidden="true">1.</strong> Simple String Errors</a></li><li class="expanded "><a href="tutorial2.html"><strong aria-hidden="true">2.</strong> Simple Chained String Errors</a></li><li class="expanded "><a href="tutorial3.html"><strong aria-hidden="true">3.</strong> Mapping Errors</a></li><li class="expanded "><a href="tutorial4.html"><strong aria-hidden="true">4.</strong> Saving coding chars</a></li><li class="expanded "><a href="tutorial5.html"><strong aria-hidden="true">5.</strong> The source() of Errors</a></li><li class="expanded "><a href="tutorial6.html"><strong aria-hidden="true">6.</strong> Downcast the Errors</a></li><li class="expanded "><a href="tutorial7.html"><strong aria-hidden="true">7.</strong> The root cause of all Errors</a></li><li class="expanded "><a href="tutorial8.html"><strong aria-hidden="true">8.</strong> Finding an Error cause</a></li><li class="expanded "><a href="tutorial9.html"><strong aria-hidden="true">9.</strong> Selective Error Handling</a></li><li class="expanded "><a href="tutorial10.html"><strong aria-hidden="true">10.</strong> ErrorKind to the rescue</a></li><li class="expanded "><a href="tutorial11.html"><strong aria-hidden="true">11.</strong> Debug for the ErrorKind</a></li><li class="expanded "><a href="tutorial12.html"><strong aria-hidden="true">12.</strong> Deref for the ErrorKind</a></li><li class="expanded "><a href="tutorial13.html"><strong aria-hidden="true">13.</strong> Writing a library</a></li><li class="expanded "><a href="tutorial14.html"><strong aria-hidden="true">14.</strong> Going back to std</a></li><li class="expanded affix "><a href="end.html" class="active">The End</a></li></ol>
|
||||
<div class="sidebar-scrollbox">
|
||||
<ol class="chapter"><li class="chapter-item expanded affix "><a href="index.html">chainerror</a></li><li class="chapter-item expanded "><a href="tutorial1.html"><strong aria-hidden="true">1.</strong> Simple String Errors</a></li><li class="chapter-item expanded "><a href="tutorial2.html"><strong aria-hidden="true">2.</strong> Simple Chained String Errors</a></li><li class="chapter-item expanded "><a href="tutorial3.html"><strong aria-hidden="true">3.</strong> Mapping Errors</a></li><li class="chapter-item expanded "><a href="tutorial4.html"><strong aria-hidden="true">4.</strong> More Information</a></li><li class="chapter-item expanded "><a href="tutorial5.html"><strong aria-hidden="true">5.</strong> The source() of Errors</a></li><li class="chapter-item expanded "><a href="tutorial6.html"><strong aria-hidden="true">6.</strong> Downcast the Errors</a></li><li class="chapter-item expanded "><a href="tutorial7.html"><strong aria-hidden="true">7.</strong> The root cause of all Errors</a></li><li class="chapter-item expanded "><a href="tutorial8.html"><strong aria-hidden="true">8.</strong> Finding an Error cause</a></li><li class="chapter-item expanded "><a href="tutorial9.html"><strong aria-hidden="true">9.</strong> Selective Error Handling</a></li><li class="chapter-item expanded "><a href="tutorial10.html"><strong aria-hidden="true">10.</strong> ErrorKind to the rescue</a></li><li class="chapter-item expanded "><a href="tutorial11.html"><strong aria-hidden="true">11.</strong> Debug for the ErrorKind</a></li><li class="chapter-item expanded "><a href="tutorial12.html"><strong aria-hidden="true">12.</strong> Deref for the ErrorKind</a></li><li class="chapter-item expanded "><a href="tutorial13.html"><strong aria-hidden="true">13.</strong> Writing a library</a></li><li class="chapter-item expanded "><a href="tutorial14.html"><strong aria-hidden="true">14.</strong> Going back to std</a></li><li class="chapter-item expanded affix "><a href="end.html" class="active">The End</a></li></ol>
|
||||
</div>
|
||||
<div id="sidebar-resize-handle" class="sidebar-resize-handle"></div>
|
||||
</nav>
|
||||
|
|
@ -90,37 +102,36 @@
|
|||
|
||||
<div class="page">
|
||||
|
||||
<div id="menu-bar" class="menu-bar">
|
||||
<div id="menu-bar-sticky-container">
|
||||
<div class="left-buttons">
|
||||
<button id="sidebar-toggle" class="icon-button" type="button" title="Toggle Table of Contents" aria-label="Toggle Table of Contents" aria-controls="sidebar">
|
||||
<i class="fa fa-bars"></i>
|
||||
</button>
|
||||
<button id="theme-toggle" class="icon-button" type="button" title="Change theme" aria-label="Change theme" aria-haspopup="true" aria-expanded="false" aria-controls="theme-list">
|
||||
<i class="fa fa-paint-brush"></i>
|
||||
</button>
|
||||
<ul id="theme-list" class="theme-popup" aria-label="Themes" role="menu">
|
||||
<li role="none"><button role="menuitem" class="theme" id="light">Light (default)</button></li>
|
||||
<li role="none"><button role="menuitem" class="theme" id="rust">Rust</button></li>
|
||||
<li role="none"><button role="menuitem" class="theme" id="coal">Coal</button></li>
|
||||
<li role="none"><button role="menuitem" class="theme" id="navy">Navy</button></li>
|
||||
<li role="none"><button role="menuitem" class="theme" id="ayu">Ayu</button></li>
|
||||
</ul>
|
||||
<div id="menu-bar-hover-placeholder"></div>
|
||||
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<h1 class="menu-title">chainerror</h1>
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Copyright 2010, 2012 Adobe Systems Incorporated (http://www.adobe.com/), with Reserved Font Name 'Source'. All Rights Reserved. Source is a trademark of Adobe Systems Incorporated in the United States and/or other countries.
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-----------------------------------------------------------
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SIL OPEN FONT LICENSE Version 1.1 - 26 February 2007
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-----------------------------------------------------------
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PREAMBLE
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The goals of the Open Font License (OFL) are to stimulate worldwide
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|
||||
included either as stand-alone text files, human-readable headers or
|
||||
in the appropriate machine-readable metadata fields within text or
|
||||
binary files as long as those fields can be easily viewed by the user.
|
||||
|
||||
3) No Modified Version of the Font Software may use the Reserved Font
|
||||
Name(s) unless explicit written permission is granted by the corresponding
|
||||
Copyright Holder. This restriction only applies to the primary font name as
|
||||
presented to the users.
|
||||
|
||||
4) The name(s) of the Copyright Holder(s) or the Author(s) of the Font
|
||||
Software shall not be used to promote, endorse or advertise any
|
||||
Modified Version, except to acknowledge the contribution(s) of the
|
||||
Copyright Holder(s) and the Author(s) or with their explicit written
|
||||
permission.
|
||||
|
||||
5) The Font Software, modified or unmodified, in part or in whole,
|
||||
must be distributed entirely under this license, and must not be
|
||||
distributed under any other license. The requirement for fonts to
|
||||
remain under this license does not apply to any document created
|
||||
using the Font Software.
|
||||
|
||||
TERMINATION
|
||||
This license becomes null and void if any of the above conditions are
|
||||
not met.
|
||||
|
||||
DISCLAIMER
|
||||
THE FONT SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
|
||||
EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO ANY WARRANTIES OF
|
||||
MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT
|
||||
OF COPYRIGHT, PATENT, TRADEMARK, OR OTHER RIGHT. IN NO EVENT SHALL THE
|
||||
COPYRIGHT HOLDER BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
|
||||
INCLUDING ANY GENERAL, SPECIAL, INDIRECT, INCIDENTAL, OR CONSEQUENTIAL
|
||||
DAMAGES, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
|
||||
FROM, OUT OF THE USE OR INABILITY TO USE THE FONT SOFTWARE OR FROM
|
||||
OTHER DEALINGS IN THE FONT SOFTWARE.
|
||||
101
fonts/fonts.css
Normal file
101
fonts/fonts.css
Normal file
|
|
@ -0,0 +1,101 @@
|
|||
/* Open Sans is licensed under the Apache License, Version 2.0. See http://www.apache.org/licenses/LICENSE-2.0 */
|
||||
/* Source Code Pro is under the Open Font License. See https://scripts.sil.org/cms/scripts/page.php?site_id=nrsi&id=OFL */
|
||||
|
||||
/* open-sans-300 - latin_vietnamese_latin-ext_greek-ext_greek_cyrillic-ext_cyrillic */
|
||||
@font-face {
|
||||
font-family: 'Open Sans';
|
||||
font-style: normal;
|
||||
font-weight: 300;
|
||||
src: local('Open Sans Light'), local('OpenSans-Light'),
|
||||
url('open-sans-v17-all-charsets-300.woff2') format('woff2');
|
||||
}
|
||||
|
||||
/* open-sans-300italic - latin_vietnamese_latin-ext_greek-ext_greek_cyrillic-ext_cyrillic */
|
||||
@font-face {
|
||||
font-family: 'Open Sans';
|
||||
font-style: italic;
|
||||
font-weight: 300;
|
||||
src: local('Open Sans Light Italic'), local('OpenSans-LightItalic'),
|
||||
url('open-sans-v17-all-charsets-300italic.woff2') format('woff2');
|
||||
}
|
||||
|
||||
/* open-sans-regular - latin_vietnamese_latin-ext_greek-ext_greek_cyrillic-ext_cyrillic */
|
||||
@font-face {
|
||||
font-family: 'Open Sans';
|
||||
font-style: normal;
|
||||
font-weight: 400;
|
||||
src: local('Open Sans Regular'), local('OpenSans-Regular'),
|
||||
url('open-sans-v17-all-charsets-regular.woff2') format('woff2');
|
||||
}
|
||||
|
||||
/* open-sans-italic - latin_vietnamese_latin-ext_greek-ext_greek_cyrillic-ext_cyrillic */
|
||||
@font-face {
|
||||
font-family: 'Open Sans';
|
||||
font-style: italic;
|
||||
font-weight: 400;
|
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src: local('Open Sans Italic'), local('OpenSans-Italic'),
|
||||
url('open-sans-v17-all-charsets-italic.woff2') format('woff2');
|
||||
}
|
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|
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/* open-sans-600 - latin_vietnamese_latin-ext_greek-ext_greek_cyrillic-ext_cyrillic */
|
||||
@font-face {
|
||||
font-family: 'Open Sans';
|
||||
font-style: normal;
|
||||
font-weight: 600;
|
||||
src: local('Open Sans SemiBold'), local('OpenSans-SemiBold'),
|
||||
url('open-sans-v17-all-charsets-600.woff2') format('woff2');
|
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}
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|
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/* open-sans-600italic - latin_vietnamese_latin-ext_greek-ext_greek_cyrillic-ext_cyrillic */
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@font-face {
|
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font-family: 'Open Sans';
|
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font-style: italic;
|
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font-weight: 600;
|
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src: local('Open Sans SemiBold Italic'), local('OpenSans-SemiBoldItalic'),
|
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url('open-sans-v17-all-charsets-600italic.woff2') format('woff2');
|
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}
|
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|
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/* open-sans-700 - latin_vietnamese_latin-ext_greek-ext_greek_cyrillic-ext_cyrillic */
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@font-face {
|
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font-family: 'Open Sans';
|
||||
font-style: normal;
|
||||
font-weight: 700;
|
||||
src: local('Open Sans Bold'), local('OpenSans-Bold'),
|
||||
url('open-sans-v17-all-charsets-700.woff2') format('woff2');
|
||||
}
|
||||
|
||||
/* open-sans-700italic - latin_vietnamese_latin-ext_greek-ext_greek_cyrillic-ext_cyrillic */
|
||||
@font-face {
|
||||
font-family: 'Open Sans';
|
||||
font-style: italic;
|
||||
font-weight: 700;
|
||||
src: local('Open Sans Bold Italic'), local('OpenSans-BoldItalic'),
|
||||
url('open-sans-v17-all-charsets-700italic.woff2') format('woff2');
|
||||
}
|
||||
|
||||
/* open-sans-800 - latin_vietnamese_latin-ext_greek-ext_greek_cyrillic-ext_cyrillic */
|
||||
@font-face {
|
||||
font-family: 'Open Sans';
|
||||
font-style: normal;
|
||||
font-weight: 800;
|
||||
src: local('Open Sans ExtraBold'), local('OpenSans-ExtraBold'),
|
||||
url('open-sans-v17-all-charsets-800.woff2') format('woff2');
|
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}
|
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|
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/* open-sans-800italic - latin_vietnamese_latin-ext_greek-ext_greek_cyrillic-ext_cyrillic */
|
||||
@font-face {
|
||||
font-family: 'Open Sans';
|
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font-style: italic;
|
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font-weight: 800;
|
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src: local('Open Sans ExtraBold Italic'), local('OpenSans-ExtraBoldItalic'),
|
||||
url('open-sans-v17-all-charsets-800italic.woff2') format('woff2');
|
||||
}
|
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|
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/* source-code-pro-500 - latin_vietnamese_latin-ext_greek_cyrillic-ext_cyrillic */
|
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@font-face {
|
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font-family: 'Source Code Pro';
|
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font-style: normal;
|
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font-weight: 500;
|
||||
src: local('Source Code Pro Medium'), local('SourceCodePro-Medium'),
|
||||
url('source-code-pro-v11-all-charsets-500.woff2') format('woff2');
|
||||
}
|
||||
BIN
fonts/open-sans-v17-all-charsets-300.woff2
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BIN
fonts/open-sans-v17-all-charsets-300.woff2
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fonts/open-sans-v17-all-charsets-300italic.woff2
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fonts/open-sans-v17-all-charsets-300italic.woff2
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fonts/open-sans-v17-all-charsets-600.woff2
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fonts/open-sans-v17-all-charsets-600.woff2
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fonts/open-sans-v17-all-charsets-600italic.woff2
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fonts/open-sans-v17-all-charsets-600italic.woff2
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fonts/open-sans-v17-all-charsets-700.woff2
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fonts/open-sans-v17-all-charsets-700italic.woff2
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fonts/open-sans-v17-all-charsets-800italic.woff2
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fonts/open-sans-v17-all-charsets-regular.woff2
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fonts/open-sans-v17-all-charsets-regular.woff2
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fonts/source-code-pro-v11-all-charsets-500.woff2
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289
index.html
289
index.html
|
|
@ -6,12 +6,23 @@
|
|||
<title>chainerror - chainerror</title>
|
||||
|
||||
|
||||
|
||||
|
||||
<!-- Custom HTML head -->
|
||||
|
||||
|
||||
|
||||
<meta content="text/html; charset=utf-8" http-equiv="Content-Type">
|
||||
<meta name="description" content="A tutorial for the chainerror rust crate.">
|
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<meta name="viewport" content="width=device-width, initial-scale=1">
|
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<meta name="theme-color" content="#ffffff" />
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@ -19,8 +30,9 @@
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|
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<link rel="stylesheet" href="FontAwesome/css/font-awesome.css">
|
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<link href="https://fonts.googleapis.com/css?family=Open+Sans:300italic,400italic,600italic,700italic,800italic,400,300,600,700,800" rel="stylesheet" type="text/css">
|
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<link href="https://fonts.googleapis.com/css?family=Source+Code+Pro:500" rel="stylesheet" type="text/css">
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@ -36,7 +48,7 @@
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@ -80,8 +92,8 @@
|
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</script>
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<nav id="sidebar" class="sidebar" aria-label="Table of contents">
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<div id="sidebar-scrollbox" class="sidebar-scrollbox">
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<ol class="chapter"><li class="expanded affix "><a href="index.html" class="active">chainerror</a></li><li class="expanded "><a href="tutorial1.html"><strong aria-hidden="true">1.</strong> Simple String Errors</a></li><li class="expanded "><a href="tutorial2.html"><strong aria-hidden="true">2.</strong> Simple Chained String Errors</a></li><li class="expanded "><a href="tutorial3.html"><strong aria-hidden="true">3.</strong> Mapping Errors</a></li><li class="expanded "><a href="tutorial4.html"><strong aria-hidden="true">4.</strong> Saving coding chars</a></li><li class="expanded "><a href="tutorial5.html"><strong aria-hidden="true">5.</strong> The source() of Errors</a></li><li class="expanded "><a href="tutorial6.html"><strong aria-hidden="true">6.</strong> Downcast the Errors</a></li><li class="expanded "><a href="tutorial7.html"><strong aria-hidden="true">7.</strong> The root cause of all Errors</a></li><li class="expanded "><a href="tutorial8.html"><strong aria-hidden="true">8.</strong> Finding an Error cause</a></li><li class="expanded "><a href="tutorial9.html"><strong aria-hidden="true">9.</strong> Selective Error Handling</a></li><li class="expanded "><a href="tutorial10.html"><strong aria-hidden="true">10.</strong> ErrorKind to the rescue</a></li><li class="expanded "><a href="tutorial11.html"><strong aria-hidden="true">11.</strong> Debug for the ErrorKind</a></li><li class="expanded "><a href="tutorial12.html"><strong aria-hidden="true">12.</strong> Deref for the ErrorKind</a></li><li class="expanded "><a href="tutorial13.html"><strong aria-hidden="true">13.</strong> Writing a library</a></li><li class="expanded "><a href="tutorial14.html"><strong aria-hidden="true">14.</strong> Going back to std</a></li><li class="expanded affix "><a href="end.html">The End</a></li></ol>
|
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<div class="sidebar-scrollbox">
|
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<ol class="chapter"><li class="chapter-item expanded affix "><a href="index.html" class="active">chainerror</a></li><li class="chapter-item expanded "><a href="tutorial1.html"><strong aria-hidden="true">1.</strong> Simple String Errors</a></li><li class="chapter-item expanded "><a href="tutorial2.html"><strong aria-hidden="true">2.</strong> Simple Chained String Errors</a></li><li class="chapter-item expanded "><a href="tutorial3.html"><strong aria-hidden="true">3.</strong> Mapping Errors</a></li><li class="chapter-item expanded "><a href="tutorial4.html"><strong aria-hidden="true">4.</strong> More Information</a></li><li class="chapter-item expanded "><a href="tutorial5.html"><strong aria-hidden="true">5.</strong> The source() of Errors</a></li><li class="chapter-item expanded "><a href="tutorial6.html"><strong aria-hidden="true">6.</strong> Downcast the Errors</a></li><li class="chapter-item expanded "><a href="tutorial7.html"><strong aria-hidden="true">7.</strong> The root cause of all Errors</a></li><li class="chapter-item expanded "><a href="tutorial8.html"><strong aria-hidden="true">8.</strong> Finding an Error cause</a></li><li class="chapter-item expanded "><a href="tutorial9.html"><strong aria-hidden="true">9.</strong> Selective Error Handling</a></li><li class="chapter-item expanded "><a href="tutorial10.html"><strong aria-hidden="true">10.</strong> ErrorKind to the rescue</a></li><li class="chapter-item expanded "><a href="tutorial11.html"><strong aria-hidden="true">11.</strong> Debug for the ErrorKind</a></li><li class="chapter-item expanded "><a href="tutorial12.html"><strong aria-hidden="true">12.</strong> Deref for the ErrorKind</a></li><li class="chapter-item expanded "><a href="tutorial13.html"><strong aria-hidden="true">13.</strong> Writing a library</a></li><li class="chapter-item expanded "><a href="tutorial14.html"><strong aria-hidden="true">14.</strong> Going back to std</a></li><li class="chapter-item expanded affix "><a href="end.html">The End</a></li></ol>
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<h1 class="menu-title">chainerror</h1>
|
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<h1 class="menu-title">chainerror</h1>
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|
|
@ -148,59 +159,138 @@
|
|||
|
||||
<div id="content" class="content">
|
||||
<main>
|
||||
<h1><a class="header" href="#chainerror" id="chainerror">chainerror</a></h1>
|
||||
<p><a href="https://travis-ci.org/haraldh/chainerror"><img src="https://travis-ci.org/haraldh/chainerror.svg?branch=master" alt="Build Status" /></a>
|
||||
<a href="https://crates.io/crates/chainerror"><img src="https://img.shields.io/crates/v/chainerror.svg" alt="Crate" /></a>
|
||||
<a href="https://docs.rs/chainerror/"><img src="https://img.shields.io/badge/api-rustdoc-blue.svg" alt="Rust Documentation" /></a></p>
|
||||
<p><code>chainerror</code> provides an error backtrace like <code>failure</code> without doing a real backtrace, so even after you <code>strip</code> your
|
||||
<p><a href="https://crates.io/crates/chainerror"><img src="https://img.shields.io/crates/v/chainerror.svg" alt="Crate" /></a>
|
||||
<a href="https://docs.rs/chainerror/"><img src="https://img.shields.io/badge/api-rustdoc-blue.svg" alt="Rust Documentation" /></a>
|
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<a href="https://coveralls.io/github/haraldh/chainerror?branch=master"><img src="https://coveralls.io/repos/github/haraldh/chainerror/badge.svg?branch=master" alt="Coverage Status" /></a>
|
||||
<a href="https://github.com/haraldh/chainerror/actions?query=workflow%3A%22Rust%22"><img src="https://github.com/haraldh/chainerror/workflows/Rust/badge.svg" alt="Workflow Status" /></a>
|
||||
<a href="https://isitmaintained.com/project/haraldh/chainerror" title="Average time to resolve an issue"><img src="https://isitmaintained.com/badge/resolution/haraldh/chainerror.svg" alt="Average time to resolve an issue" /></a>
|
||||
<a href="https://isitmaintained.com/project/haraldh/chainerror" title="Percentage of issues still open"><img src="https://isitmaintained.com/badge/open/haraldh/chainerror.svg" alt="Percentage of issues still open" /></a>
|
||||
<img src="https://img.shields.io/badge/maintenance-activly--developed-brightgreen.svg" alt="Maintenance" /></p>
|
||||
<h1><a class="header" href="#chainerror" id="chainerror">chainerror</a></h1>
|
||||
<p><code>chainerror</code> provides an error backtrace without doing a real backtrace, so even after you <code>strip</code> your
|
||||
binaries, you still have the error backtrace.</p>
|
||||
<p><code>chainerror</code> has no dependencies!</p>
|
||||
<p><code>chainerror</code> uses <code>.source()</code> of <code>std::error::Error</code> along with <code>line()!</code> and <code>file()!</code> to provide a nice debug error backtrace.
|
||||
<p><code>chainerror</code> uses <code>.source()</code> of <code>std::error::Error</code> along with <code>#[track_caller]</code> and <code>Location</code> to provide a nice debug error backtrace.
|
||||
It encapsulates all types, which have <code>Display + Debug</code> and can store the error cause internally.</p>
|
||||
<p>Along with the <code>ChainError<T></code> struct, <code>chainerror</code> comes with some useful helper macros to save a lot of typing.</p>
|
||||
<p>Debug information is worth it!</p>
|
||||
<p>Now continue reading the
|
||||
<a href="https://haraldh.github.io/chainerror/tutorial1.html">Tutorial</a></p>
|
||||
<h2><a class="header" href="#example" id="example">Example:</a></h2>
|
||||
<p>Output:</p>
|
||||
<pre><code>$ cargo run -q --example example
|
||||
Main Error Report: func1 error calling func2
|
||||
|
||||
Error reported by Func2Error: func2 error: calling func3
|
||||
|
||||
The root cause was: std::io::Error: Kind(
|
||||
NotFound
|
||||
)
|
||||
|
||||
Debug Error:
|
||||
examples/example.rs:45: func1 error calling func2
|
||||
<h3><a class="header" href="#features" id="features">Features</a></h3>
|
||||
<p><code>display-cause</code>
|
||||
: turn on printing a backtrace of the errors in <code>Display</code></p>
|
||||
<h2><a class="header" href="#tutorial" id="tutorial">Tutorial</a></h2>
|
||||
<p>Read the <a href="https://haraldh.github.io/chainerror/tutorial1.html">Tutorial</a></p>
|
||||
<h2><a class="header" href="#examples" id="examples">Examples</a></h2>
|
||||
<p>examples/example.rs:</p>
|
||||
<pre><pre class="playground"><code class="language-rust">// […]
|
||||
fn main() {
|
||||
if let Err(e) = func1() {
|
||||
eprintln!("\nDebug Error {{:?}}:\n{:?}", e);
|
||||
eprintln!("\nAlternative Debug Error {{:#?}}:\n{:#?}\n", e);
|
||||
// […]
|
||||
}
|
||||
}
|
||||
</code></pre></pre>
|
||||
<pre><code class="language-console">$ cargo run -q --example example
|
||||
Debug Error {:?}:
|
||||
examples/example.rs:46:13: func1 error calling func2
|
||||
Caused by:
|
||||
examples/example.rs:20: Func2Error(func2 error: calling func3)
|
||||
examples/example.rs:21:13: Func2Error(func2 error: calling func3)
|
||||
Caused by:
|
||||
examples/example.rs:13: Error reading 'foo.txt'
|
||||
examples/example.rs:14:18: Error reading 'foo.txt'
|
||||
Caused by:
|
||||
Kind(NotFound)
|
||||
|
||||
Alternative Debug Error {:#?}:
|
||||
ChainError<example::Func1Error> {
|
||||
occurrence: Some(
|
||||
"examples/example.rs:46:13",
|
||||
),
|
||||
kind: func1 error calling func2,
|
||||
source: Some(
|
||||
ChainError<example::Func2Error> {
|
||||
occurrence: Some(
|
||||
"examples/example.rs:21:13",
|
||||
),
|
||||
kind: Func2Error(func2 error: calling func3),
|
||||
source: Some(
|
||||
ChainError<alloc::string::String> {
|
||||
occurrence: Some(
|
||||
"examples/example.rs:14:18",
|
||||
),
|
||||
kind: "Error reading \'foo.txt\'",
|
||||
source: Some(
|
||||
Kind(
|
||||
NotFound,
|
||||
),
|
||||
),
|
||||
},
|
||||
),
|
||||
},
|
||||
),
|
||||
}
|
||||
</code></pre>
|
||||
<pre><code class="language-rust ignore">use chainerror::*;
|
||||
<pre><pre class="playground"><code class="language-rust">
|
||||
<span class="boring">#![allow(unused)]
|
||||
</span><span class="boring">fn main() {
|
||||
</span>use chainerror::prelude::v1::*;
|
||||
use std::error::Error;
|
||||
use std::io;
|
||||
use std::result::Result;
|
||||
|
||||
fn do_some_io() -> Result<(), Box<Error + Send + Sync>> {
|
||||
fn do_some_io() -> Result<(), Box<dyn Error + Send + Sync>> {
|
||||
Err(io::Error::from(io::ErrorKind::NotFound))?;
|
||||
Ok(())
|
||||
}
|
||||
|
||||
fn func3() -> Result<(), Box<Error + Send + Sync>> {
|
||||
fn func2() -> Result<(), Box<dyn Error + Send + Sync>> {
|
||||
let filename = "foo.txt";
|
||||
do_some_io().map_err(mstrerr!("Error reading '{}'", filename))?;
|
||||
do_some_io().context(format!("Error reading '{}'", filename))?;
|
||||
Ok(())
|
||||
}
|
||||
|
||||
derive_str_cherr!(Func2Error);
|
||||
fn func1() -> Result<(), Box<dyn Error + Send + Sync>> {
|
||||
func2().context("func1 error")?;
|
||||
Ok(())
|
||||
}
|
||||
|
||||
if let Err(e) = func1() {
|
||||
#[cfg(not(windows))]
|
||||
assert_eq!(
|
||||
format!("\n{:?}\n", e),
|
||||
r#"
|
||||
src/lib.rs:21:13: func1 error
|
||||
Caused by:
|
||||
src/lib.rs:16:18: Error reading 'foo.txt'
|
||||
Caused by:
|
||||
Kind(NotFound)
|
||||
"#
|
||||
);
|
||||
}
|
||||
<span class="boring">}
|
||||
</span></code></pre></pre>
|
||||
<pre><pre class="playground"><code class="language-rust">
|
||||
<span class="boring">#![allow(unused)]
|
||||
</span><span class="boring">fn main() {
|
||||
</span>use chainerror::prelude::v1::*;
|
||||
use std::error::Error;
|
||||
use std::io;
|
||||
use std::result::Result;
|
||||
|
||||
fn do_some_io() -> Result<(), Box<dyn Error + Send + Sync>> {
|
||||
Err(io::Error::from(io::ErrorKind::NotFound))?;
|
||||
Ok(())
|
||||
}
|
||||
|
||||
fn func3() -> Result<(), Box<dyn Error + Send + Sync>> {
|
||||
let filename = "foo.txt";
|
||||
do_some_io().context(format!("Error reading '{}'", filename))?;
|
||||
Ok(())
|
||||
}
|
||||
|
||||
derive_str_context!(Func2Error);
|
||||
|
||||
fn func2() -> ChainResult<(), Func2Error> {
|
||||
func3().map_err(mstrerr!(Func2Error, "func2 error: calling func3"))?;
|
||||
func3().context(Func2Error("func2 error: calling func3".into()))?;
|
||||
Ok(())
|
||||
}
|
||||
|
||||
|
|
@ -225,42 +315,65 @@ impl ::std::fmt::Debug for Func1Error {
|
|||
}
|
||||
|
||||
fn func1() -> ChainResult<(), Func1Error> {
|
||||
func2().map_err(|e| cherr!(e, Func1Error::Func2))?;
|
||||
func2().context(Func1Error::Func2)?;
|
||||
let filename = String::from("bar.txt");
|
||||
do_some_io().map_err(|e| cherr!(e, Func1Error::IO(filename)))?;
|
||||
do_some_io().context(Func1Error::IO(filename))?;
|
||||
Ok(())
|
||||
}
|
||||
|
||||
fn main() {
|
||||
if let Err(e) = func1() {
|
||||
match e.kind() {
|
||||
Func1Error::Func2 => eprintln!("Main Error Report: func1 error calling func2"),
|
||||
Func1Error::IO(filename) => {
|
||||
eprintln!("Main Error Report: func1 error reading '{}'", filename)
|
||||
}
|
||||
if let Err(e) = func1() {
|
||||
assert!(match e.kind() {
|
||||
Func1Error::Func2 => {
|
||||
eprintln!("Main Error Report: func1 error calling func2");
|
||||
true
|
||||
}
|
||||
|
||||
if let Some(e) = e.find_chain_cause::<Func2Error>() {
|
||||
eprintln!("\nError reported by Func2Error: {}", e)
|
||||
Func1Error::IO(filename) => {
|
||||
eprintln!("Main Error Report: func1 error reading '{}'", filename);
|
||||
false
|
||||
}
|
||||
});
|
||||
|
||||
if let Some(e) = e.root_cause() {
|
||||
let ioerror = e.downcast_ref::<io::Error>().unwrap();
|
||||
eprintln!("\nThe root cause was: std::io::Error: {:#?}", ioerror);
|
||||
}
|
||||
assert!(e.find_chain_cause::<Func2Error>().is_some());
|
||||
|
||||
eprintln!("\nDebug Error:\n{:?}", e);
|
||||
if let Some(e) = e.find_chain_cause::<Func2Error>() {
|
||||
eprintln!("\nError reported by Func2Error: {}", e)
|
||||
}
|
||||
}
|
||||
|
||||
</code></pre>
|
||||
<h2><a class="header" href="#features" id="features">Features</a></h2>
|
||||
<p><code>no-fileline</code>
|
||||
: completely turn off storing filename and line</p>
|
||||
<p><code>display-cause</code>
|
||||
: turn on printing a backtrace of the errors in <code>Display</code></p>
|
||||
<p><code>no-debug-cause</code>
|
||||
: turn off printing a backtrace of the errors in <code>Debug</code></p>
|
||||
assert!(e.root_cause().is_some());
|
||||
|
||||
if let Some(e) = e.root_cause() {
|
||||
let io_error = e.downcast_ref::<io::Error>().unwrap();
|
||||
eprintln!("\nThe root cause was: std::io::Error: {:#?}", io_error);
|
||||
}
|
||||
|
||||
#[cfg(not(windows))]
|
||||
assert_eq!(
|
||||
format!("\n{:?}\n", e),
|
||||
r#"
|
||||
src/lib.rs:48:13: func1 error calling func2
|
||||
Caused by:
|
||||
src/lib.rs:23:13: Func2Error(func2 error: calling func3)
|
||||
Caused by:
|
||||
src/lib.rs:16:18: Error reading 'foo.txt'
|
||||
Caused by:
|
||||
Kind(NotFound)
|
||||
"#
|
||||
);
|
||||
}
|
||||
<span class="boring">}
|
||||
</span></code></pre></pre>
|
||||
<h2><a class="header" href="#license" id="license">License</a></h2>
|
||||
<p>Licensed under either of</p>
|
||||
<ul>
|
||||
<li>Apache License, Version 2.0, (<a href="LICENSE-APACHE">LICENSE-APACHE</a> or https://www.apache.org/licenses/LICENSE-2.0)</li>
|
||||
<li>MIT license (<a href="LICENSE-MIT">LICENSE-MIT</a> or https://opensource.org/licenses/MIT)</li>
|
||||
</ul>
|
||||
<p>at your option.</p>
|
||||
<h3><a class="header" href="#contribution" id="contribution">Contribution</a></h3>
|
||||
<p>Unless you explicitly state otherwise, any contribution intentionally
|
||||
submitted for inclusion in the work by you, as defined in the Apache-2.0
|
||||
license, shall be dual licensed as above, without any additional terms or
|
||||
conditions.</p>
|
||||
|
||||
</main>
|
||||
|
||||
|
|
@ -283,7 +396,7 @@ fn main() {
|
|||
|
||||
|
||||
|
||||
<a href="tutorial1.html" class="nav-chapters next" title="Next chapter" aria-label="Next chapter" aria-keyshortcuts="Right">
|
||||
<a rel="next" href="tutorial1.html" class="nav-chapters next" title="Next chapter" aria-label="Next chapter" aria-keyshortcuts="Right">
|
||||
<i class="fa fa-angle-right"></i>
|
||||
</a>
|
||||
|
||||
|
|
@ -299,7 +412,7 @@ fn main() {
|
|||
|
||||
|
||||
<script type="text/javascript">
|
||||
window.playpen_copyable = true;
|
||||
window.playground_copyable = true;
|
||||
</script>
|
||||
|
||||
|
||||
|
|
|
|||
8810
print.html
8810
print.html
File diff suppressed because it is too large
Load diff
|
|
@ -311,7 +311,7 @@ window.search = window.search || {};
|
|||
|
||||
// Eventhandler for keyevents on `document`
|
||||
function globalKeyHandler(e) {
|
||||
if (e.altKey || e.ctrlKey || e.metaKey || e.shiftKey || e.target.type === 'textarea') { return; }
|
||||
if (e.altKey || e.ctrlKey || e.metaKey || e.shiftKey || e.target.type === 'textarea' || e.target.type === 'text') { return; }
|
||||
|
||||
if (e.keyCode === ESCAPE_KEYCODE) {
|
||||
e.preventDefault();
|
||||
|
|
|
|||
File diff suppressed because one or more lines are too long
File diff suppressed because one or more lines are too long
|
|
@ -6,12 +6,23 @@
|
|||
<title>Simple String Errors - chainerror</title>
|
||||
|
||||
|
||||
|
||||
|
||||
<!-- Custom HTML head -->
|
||||
|
||||
|
||||
|
||||
<meta content="text/html; charset=utf-8" http-equiv="Content-Type">
|
||||
<meta name="description" content="A tutorial for the chainerror rust crate.">
|
||||
<meta name="viewport" content="width=device-width, initial-scale=1">
|
||||
<meta name="theme-color" content="#ffffff" />
|
||||
|
||||
|
||||
<link rel="icon" href="favicon.svg">
|
||||
|
||||
|
||||
<link rel="shortcut icon" href="favicon.png">
|
||||
|
||||
<link rel="stylesheet" href="css/variables.css">
|
||||
<link rel="stylesheet" href="css/general.css">
|
||||
<link rel="stylesheet" href="css/chrome.css">
|
||||
|
|
@ -19,8 +30,9 @@
|
|||
|
||||
<!-- Fonts -->
|
||||
<link rel="stylesheet" href="FontAwesome/css/font-awesome.css">
|
||||
<link href="https://fonts.googleapis.com/css?family=Open+Sans:300italic,400italic,600italic,700italic,800italic,400,300,600,700,800" rel="stylesheet" type="text/css">
|
||||
<link href="https://fonts.googleapis.com/css?family=Source+Code+Pro:500" rel="stylesheet" type="text/css">
|
||||
|
||||
<link rel="stylesheet" href="fonts/fonts.css">
|
||||
|
||||
|
||||
<!-- Highlight.js Stylesheets -->
|
||||
<link rel="stylesheet" href="highlight.css">
|
||||
|
|
@ -36,7 +48,7 @@
|
|||
<!-- Provide site root to javascript -->
|
||||
<script type="text/javascript">
|
||||
var path_to_root = "";
|
||||
var default_theme = window.matchMedia("(prefers-color-scheme: dark)").matches ? "light" : "light";
|
||||
var default_theme = window.matchMedia("(prefers-color-scheme: dark)").matches ? "navy" : "light";
|
||||
</script>
|
||||
|
||||
<!-- Work around some values being stored in localStorage wrapped in quotes -->
|
||||
|
|
@ -80,8 +92,8 @@
|
|||
</script>
|
||||
|
||||
<nav id="sidebar" class="sidebar" aria-label="Table of contents">
|
||||
<div id="sidebar-scrollbox" class="sidebar-scrollbox">
|
||||
<ol class="chapter"><li class="expanded affix "><a href="index.html">chainerror</a></li><li class="expanded "><a href="tutorial1.html" class="active"><strong aria-hidden="true">1.</strong> Simple String Errors</a></li><li class="expanded "><a href="tutorial2.html"><strong aria-hidden="true">2.</strong> Simple Chained String Errors</a></li><li class="expanded "><a href="tutorial3.html"><strong aria-hidden="true">3.</strong> Mapping Errors</a></li><li class="expanded "><a href="tutorial4.html"><strong aria-hidden="true">4.</strong> Saving coding chars</a></li><li class="expanded "><a href="tutorial5.html"><strong aria-hidden="true">5.</strong> The source() of Errors</a></li><li class="expanded "><a href="tutorial6.html"><strong aria-hidden="true">6.</strong> Downcast the Errors</a></li><li class="expanded "><a href="tutorial7.html"><strong aria-hidden="true">7.</strong> The root cause of all Errors</a></li><li class="expanded "><a href="tutorial8.html"><strong aria-hidden="true">8.</strong> Finding an Error cause</a></li><li class="expanded "><a href="tutorial9.html"><strong aria-hidden="true">9.</strong> Selective Error Handling</a></li><li class="expanded "><a href="tutorial10.html"><strong aria-hidden="true">10.</strong> ErrorKind to the rescue</a></li><li class="expanded "><a href="tutorial11.html"><strong aria-hidden="true">11.</strong> Debug for the ErrorKind</a></li><li class="expanded "><a href="tutorial12.html"><strong aria-hidden="true">12.</strong> Deref for the ErrorKind</a></li><li class="expanded "><a href="tutorial13.html"><strong aria-hidden="true">13.</strong> Writing a library</a></li><li class="expanded "><a href="tutorial14.html"><strong aria-hidden="true">14.</strong> Going back to std</a></li><li class="expanded affix "><a href="end.html">The End</a></li></ol>
|
||||
<div class="sidebar-scrollbox">
|
||||
<ol class="chapter"><li class="chapter-item expanded affix "><a href="index.html">chainerror</a></li><li class="chapter-item expanded "><a href="tutorial1.html" class="active"><strong aria-hidden="true">1.</strong> Simple String Errors</a></li><li class="chapter-item expanded "><a href="tutorial2.html"><strong aria-hidden="true">2.</strong> Simple Chained String Errors</a></li><li class="chapter-item expanded "><a href="tutorial3.html"><strong aria-hidden="true">3.</strong> Mapping Errors</a></li><li class="chapter-item expanded "><a href="tutorial4.html"><strong aria-hidden="true">4.</strong> More Information</a></li><li class="chapter-item expanded "><a href="tutorial5.html"><strong aria-hidden="true">5.</strong> The source() of Errors</a></li><li class="chapter-item expanded "><a href="tutorial6.html"><strong aria-hidden="true">6.</strong> Downcast the Errors</a></li><li class="chapter-item expanded "><a href="tutorial7.html"><strong aria-hidden="true">7.</strong> The root cause of all Errors</a></li><li class="chapter-item expanded "><a href="tutorial8.html"><strong aria-hidden="true">8.</strong> Finding an Error cause</a></li><li class="chapter-item expanded "><a href="tutorial9.html"><strong aria-hidden="true">9.</strong> Selective Error Handling</a></li><li class="chapter-item expanded "><a href="tutorial10.html"><strong aria-hidden="true">10.</strong> ErrorKind to the rescue</a></li><li class="chapter-item expanded "><a href="tutorial11.html"><strong aria-hidden="true">11.</strong> Debug for the ErrorKind</a></li><li class="chapter-item expanded "><a href="tutorial12.html"><strong aria-hidden="true">12.</strong> Deref for the ErrorKind</a></li><li class="chapter-item expanded "><a href="tutorial13.html"><strong aria-hidden="true">13.</strong> Writing a library</a></li><li class="chapter-item expanded "><a href="tutorial14.html"><strong aria-hidden="true">14.</strong> Going back to std</a></li><li class="chapter-item expanded affix "><a href="end.html">The End</a></li></ol>
|
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</div>
|
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<div id="sidebar-resize-handle" class="sidebar-resize-handle"></div>
|
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</nav>
|
||||
|
|
@ -90,37 +102,36 @@
|
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|
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<div class="page">
|
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|
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<div id="menu-bar" class="menu-bar">
|
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<div id="menu-bar-sticky-container">
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<div class="left-buttons">
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<button id="sidebar-toggle" class="icon-button" type="button" title="Toggle Table of Contents" aria-label="Toggle Table of Contents" aria-controls="sidebar">
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<i class="fa fa-bars"></i>
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</button>
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<button id="theme-toggle" class="icon-button" type="button" title="Change theme" aria-label="Change theme" aria-haspopup="true" aria-expanded="false" aria-controls="theme-list">
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<div class="left-buttons">
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<button id="sidebar-toggle" class="icon-button" type="button" title="Toggle Table of Contents" aria-label="Toggle Table of Contents" aria-controls="sidebar">
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</button>
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<button id="search-toggle" class="icon-button" type="button" title="Search. (Shortkey: s)" aria-label="Toggle Searchbar" aria-expanded="false" aria-keyshortcuts="S" aria-controls="searchbar">
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<i class="fa fa-search"></i>
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</button>
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|
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</div>
|
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</div>
|
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|
||||
<h1 class="menu-title">chainerror</h1>
|
||||
<h1 class="menu-title">chainerror</h1>
|
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|
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<div class="right-buttons">
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<a href="print.html" title="Print this book" aria-label="Print this book">
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</div>
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</div>
|
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</div>
|
||||
|
||||
|
|
@ -154,7 +165,7 @@
|
|||
<p>As you can see by running the example (by pressing the "Play" button in upper right of the code block),
|
||||
this only
|
||||
prints out the last <code>Error</code>.</p>
|
||||
<pre><code>Error: StringError("func1 error")
|
||||
<pre><code>Error: "func1 error"
|
||||
</code></pre>
|
||||
<p>The next chapters of this tutorial show how <code>chainerror</code> adds more information
|
||||
and improves inspecting the sources of an error.</p>
|
||||
|
|
@ -162,7 +173,7 @@ and improves inspecting the sources of an error.</p>
|
|||
<a href="https://github.com/haraldh/chainerror">chainerror git repo</a>.</p>
|
||||
<pre><code class="language-console">$ cargo run -q --example tutorial1
|
||||
</code></pre>
|
||||
<pre><pre class="playpen"><code class="language-rust">use std::error::Error;
|
||||
<pre><pre class="playground"><code class="language-rust">use std::error::Error;
|
||||
use std::io;
|
||||
use std::result::Result;
|
||||
|
||||
|
|
@ -213,13 +224,13 @@ fn main() -> Result<(), Box<dyn Error + Send + Sync>> {
|
|||
|
||||
<nav class="nav-wide-wrapper" aria-label="Page navigation">
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|
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<a href="index.html" class="nav-chapters previous" title="Previous chapter" aria-label="Previous chapter" aria-keyshortcuts="Left">
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<a rel="prev" href="index.html" class="nav-chapters previous" title="Previous chapter" aria-label="Previous chapter" aria-keyshortcuts="Left">
|
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<i class="fa fa-angle-left"></i>
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</a>
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|
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<a href="tutorial2.html" class="nav-chapters next" title="Next chapter" aria-label="Next chapter" aria-keyshortcuts="Right">
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<a rel="next" href="tutorial2.html" class="nav-chapters next" title="Next chapter" aria-label="Next chapter" aria-keyshortcuts="Right">
|
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<i class="fa fa-angle-right"></i>
|
||||
</a>
|
||||
|
||||
|
|
@ -235,7 +246,7 @@ fn main() -> Result<(), Box<dyn Error + Send + Sync>> {
|
|||
|
||||
|
||||
<script type="text/javascript">
|
||||
window.playpen_copyable = true;
|
||||
window.playground_copyable = true;
|
||||
</script>
|
||||
|
||||
|
||||
|
|
|
|||
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|
|
@ -6,12 +6,23 @@
|
|||
<title>Going back to std - chainerror</title>
|
||||
|
||||
|
||||
|
||||
|
||||
<!-- Custom HTML head -->
|
||||
|
||||
|
||||
|
||||
<meta content="text/html; charset=utf-8" http-equiv="Content-Type">
|
||||
<meta name="description" content="A tutorial for the chainerror rust crate.">
|
||||
<meta name="viewport" content="width=device-width, initial-scale=1">
|
||||
<meta name="theme-color" content="#ffffff" />
|
||||
|
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|
||||
<link rel="icon" href="favicon.svg">
|
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|
||||
|
||||
<link rel="shortcut icon" href="favicon.png">
|
||||
|
||||
<link rel="stylesheet" href="css/variables.css">
|
||||
<link rel="stylesheet" href="css/general.css">
|
||||
<link rel="stylesheet" href="css/chrome.css">
|
||||
|
|
@ -19,8 +30,9 @@
|
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|
||||
<!-- Fonts -->
|
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<link rel="stylesheet" href="FontAwesome/css/font-awesome.css">
|
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<link href="https://fonts.googleapis.com/css?family=Open+Sans:300italic,400italic,600italic,700italic,800italic,400,300,600,700,800" rel="stylesheet" type="text/css">
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<link href="https://fonts.googleapis.com/css?family=Source+Code+Pro:500" rel="stylesheet" type="text/css">
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|
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<link rel="stylesheet" href="fonts/fonts.css">
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|
||||
|
||||
<!-- Highlight.js Stylesheets -->
|
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<link rel="stylesheet" href="highlight.css">
|
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|
|
@ -36,7 +48,7 @@
|
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<!-- Provide site root to javascript -->
|
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<script type="text/javascript">
|
||||
var path_to_root = "";
|
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var default_theme = window.matchMedia("(prefers-color-scheme: dark)").matches ? "light" : "light";
|
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var default_theme = window.matchMedia("(prefers-color-scheme: dark)").matches ? "navy" : "light";
|
||||
</script>
|
||||
|
||||
<!-- Work around some values being stored in localStorage wrapped in quotes -->
|
||||
|
|
@ -80,8 +92,8 @@
|
|||
</script>
|
||||
|
||||
<nav id="sidebar" class="sidebar" aria-label="Table of contents">
|
||||
<div id="sidebar-scrollbox" class="sidebar-scrollbox">
|
||||
<ol class="chapter"><li class="expanded affix "><a href="index.html">chainerror</a></li><li class="expanded "><a href="tutorial1.html"><strong aria-hidden="true">1.</strong> Simple String Errors</a></li><li class="expanded "><a href="tutorial2.html"><strong aria-hidden="true">2.</strong> Simple Chained String Errors</a></li><li class="expanded "><a href="tutorial3.html"><strong aria-hidden="true">3.</strong> Mapping Errors</a></li><li class="expanded "><a href="tutorial4.html"><strong aria-hidden="true">4.</strong> Saving coding chars</a></li><li class="expanded "><a href="tutorial5.html"><strong aria-hidden="true">5.</strong> The source() of Errors</a></li><li class="expanded "><a href="tutorial6.html"><strong aria-hidden="true">6.</strong> Downcast the Errors</a></li><li class="expanded "><a href="tutorial7.html"><strong aria-hidden="true">7.</strong> The root cause of all Errors</a></li><li class="expanded "><a href="tutorial8.html"><strong aria-hidden="true">8.</strong> Finding an Error cause</a></li><li class="expanded "><a href="tutorial9.html"><strong aria-hidden="true">9.</strong> Selective Error Handling</a></li><li class="expanded "><a href="tutorial10.html"><strong aria-hidden="true">10.</strong> ErrorKind to the rescue</a></li><li class="expanded "><a href="tutorial11.html"><strong aria-hidden="true">11.</strong> Debug for the ErrorKind</a></li><li class="expanded "><a href="tutorial12.html"><strong aria-hidden="true">12.</strong> Deref for the ErrorKind</a></li><li class="expanded "><a href="tutorial13.html"><strong aria-hidden="true">13.</strong> Writing a library</a></li><li class="expanded "><a href="tutorial14.html" class="active"><strong aria-hidden="true">14.</strong> Going back to std</a></li><li class="expanded affix "><a href="end.html">The End</a></li></ol>
|
||||
<div class="sidebar-scrollbox">
|
||||
<ol class="chapter"><li class="chapter-item expanded affix "><a href="index.html">chainerror</a></li><li class="chapter-item expanded "><a href="tutorial1.html"><strong aria-hidden="true">1.</strong> Simple String Errors</a></li><li class="chapter-item expanded "><a href="tutorial2.html"><strong aria-hidden="true">2.</strong> Simple Chained String Errors</a></li><li class="chapter-item expanded "><a href="tutorial3.html"><strong aria-hidden="true">3.</strong> Mapping Errors</a></li><li class="chapter-item expanded "><a href="tutorial4.html"><strong aria-hidden="true">4.</strong> More Information</a></li><li class="chapter-item expanded "><a href="tutorial5.html"><strong aria-hidden="true">5.</strong> The source() of Errors</a></li><li class="chapter-item expanded "><a href="tutorial6.html"><strong aria-hidden="true">6.</strong> Downcast the Errors</a></li><li class="chapter-item expanded "><a href="tutorial7.html"><strong aria-hidden="true">7.</strong> The root cause of all Errors</a></li><li class="chapter-item expanded "><a href="tutorial8.html"><strong aria-hidden="true">8.</strong> Finding an Error cause</a></li><li class="chapter-item expanded "><a href="tutorial9.html"><strong aria-hidden="true">9.</strong> Selective Error Handling</a></li><li class="chapter-item expanded "><a href="tutorial10.html"><strong aria-hidden="true">10.</strong> ErrorKind to the rescue</a></li><li class="chapter-item expanded "><a href="tutorial11.html"><strong aria-hidden="true">11.</strong> Debug for the ErrorKind</a></li><li class="chapter-item expanded "><a href="tutorial12.html"><strong aria-hidden="true">12.</strong> Deref for the ErrorKind</a></li><li class="chapter-item expanded "><a href="tutorial13.html"><strong aria-hidden="true">13.</strong> Writing a library</a></li><li class="chapter-item expanded "><a href="tutorial14.html" class="active"><strong aria-hidden="true">14.</strong> Going back to std</a></li><li class="chapter-item expanded affix "><a href="end.html">The End</a></li></ol>
|
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</div>
|
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<div id="sidebar-resize-handle" class="sidebar-resize-handle"></div>
|
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</nav>
|
||||
|
|
@ -90,37 +102,36 @@
|
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|
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<div class="page">
|
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|
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<div id="menu-bar" class="menu-bar">
|
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<div id="menu-bar-sticky-container">
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<div class="left-buttons">
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<button id="sidebar-toggle" class="icon-button" type="button" title="Toggle Table of Contents" aria-label="Toggle Table of Contents" aria-controls="sidebar">
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<i class="fa fa-bars"></i>
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</button>
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<button id="theme-toggle" class="icon-button" type="button" title="Change theme" aria-label="Change theme" aria-haspopup="true" aria-expanded="false" aria-controls="theme-list">
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<ul id="theme-list" class="theme-popup" aria-label="Themes" role="menu">
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<button id="search-toggle" class="icon-button" type="button" title="Search. (Shortkey: s)" aria-label="Toggle Searchbar" aria-expanded="false" aria-keyshortcuts="S" aria-controls="searchbar">
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<i class="fa fa-search"></i>
|
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</button>
|
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<button id="search-toggle" class="icon-button" type="button" title="Search. (Shortkey: s)" aria-label="Toggle Searchbar" aria-expanded="false" aria-keyshortcuts="S" aria-controls="searchbar">
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<i class="fa fa-search"></i>
|
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</button>
|
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|
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</div>
|
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</div>
|
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|
||||
<h1 class="menu-title">chainerror</h1>
|
||||
<h1 class="menu-title">chainerror</h1>
|
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|
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<div class="right-buttons">
|
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<a href="print.html" title="Print this book" aria-label="Print this book">
|
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<i id="print-button" class="fa fa-print"></i>
|
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</a>
|
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<div class="right-buttons">
|
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<a href="print.html" title="Print this book" aria-label="Print this book">
|
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<i id="print-button" class="fa fa-print"></i>
|
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</a>
|
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|
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</div>
|
||||
</div>
|
||||
</div>
|
||||
|
||||
|
|
@ -151,10 +162,10 @@
|
|||
<h1><a class="header" href="#going-back-to-std" id="going-back-to-std">Going back to std</a></h1>
|
||||
<p>Not using <code>chainerror</code> and going full <code>std</code> would look like this:</p>
|
||||
<p>Btw, the code size is bigger than using <code>chainerror</code> :-)</p>
|
||||
<pre><pre class="playpen"><code class="language-rust">pub mod mycrate {
|
||||
<pre><pre class="playground"><code class="language-rust">pub mod mycrate {
|
||||
use std::error::Error as StdError;
|
||||
|
||||
use func2mod::{do_some_io, func2};
|
||||
use self::func2mod::{do_some_io, func2};
|
||||
|
||||
pub mod func2mod {
|
||||
use std::error::Error as StdError;
|
||||
|
|
@ -180,7 +191,7 @@
|
|||
}
|
||||
}
|
||||
|
||||
macro_rules! mcherr {
|
||||
macro_rules! mcontext {
|
||||
( $k:expr ) => {{
|
||||
|e| {
|
||||
Error(
|
||||
|
|
@ -245,7 +256,7 @@
|
|||
|
||||
pub fn func2() -> std::result::Result<(), Error> {
|
||||
let filename = "foo.txt";
|
||||
do_some_io().map_err(mcherr!(ErrorKind::IO(format!(
|
||||
do_some_io().map_err(mcontext!(ErrorKind::IO(format!(
|
||||
"Error reading '{}'",
|
||||
filename
|
||||
))))?;
|
||||
|
|
@ -268,7 +279,7 @@
|
|||
}
|
||||
}
|
||||
|
||||
macro_rules! mcherr {
|
||||
macro_rules! mcontext {
|
||||
( $k:expr ) => {{
|
||||
|e| {
|
||||
Error(
|
||||
|
|
@ -328,9 +339,9 @@
|
|||
pub type Result<T> = std::result::Result<T, Error>;
|
||||
|
||||
pub fn func1() -> Result<()> {
|
||||
func2().map_err(mcherr!(ErrorKind::Func2))?;
|
||||
func2().map_err(mcontext!(ErrorKind::Func2))?;
|
||||
let filename = String::from("bar.txt");
|
||||
do_some_io().map_err(mcherr!(ErrorKind::IO(filename)))?;
|
||||
do_some_io().map_err(mcontext!(ErrorKind::IO(filename)))?;
|
||||
Ok(())
|
||||
}
|
||||
}
|
||||
|
|
@ -365,6 +376,8 @@ fn main() -> Result<(), Box<dyn std::error::Error + Send + Sync>>
|
|||
}
|
||||
|
||||
eprintln!("\nDebug Error:\n{:?}", e);
|
||||
|
||||
std::process::exit(1);
|
||||
}
|
||||
Ok(())
|
||||
}
|
||||
|
|
@ -393,13 +406,13 @@ fn main() -> Result<(), Box<dyn std::error::Error + Send + Sync>>
|
|||
|
||||
<nav class="nav-wide-wrapper" aria-label="Page navigation">
|
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|
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<a href="tutorial13.html" class="nav-chapters previous" title="Previous chapter" aria-label="Previous chapter" aria-keyshortcuts="Left">
|
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<a rel="prev" href="tutorial13.html" class="nav-chapters previous" title="Previous chapter" aria-label="Previous chapter" aria-keyshortcuts="Left">
|
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<i class="fa fa-angle-left"></i>
|
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</a>
|
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|
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|
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|
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<a href="end.html" class="nav-chapters next" title="Next chapter" aria-label="Next chapter" aria-keyshortcuts="Right">
|
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<a rel="next" href="end.html" class="nav-chapters next" title="Next chapter" aria-label="Next chapter" aria-keyshortcuts="Right">
|
||||
<i class="fa fa-angle-right"></i>
|
||||
</a>
|
||||
|
||||
|
|
@ -415,7 +428,7 @@ fn main() -> Result<(), Box<dyn std::error::Error + Send + Sync>>
|
|||
|
||||
|
||||
<script type="text/javascript">
|
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window.playpen_copyable = true;
|
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window.playground_copyable = true;
|
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</script>
|
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|
||||
|
||||
|
|
|
|||
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Reference in a new issue