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fix busted JavaScript in error index generator

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The old JavaScript didn't work. It filled the browser console
with "e.previousElementSibling not defined" errors, because
it didn't account for the example-wrap div that a newer version
of rustdoc added.

Additionally, it had copied versions of utility functions that
had been optimized in rustdoc main.js. This version updates those.
This commit is contained in:
Michael Howell 2021-10-04 13:01:50 -07:00
parent 175b8db73b
commit ccd2be5b91
1 changed files with 20 additions and 35 deletions
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53
src/tools/error_index_generator/main.rs
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@ -143,56 +143,41 @@ impl Formatter for HTMLFormatter {
r##"<script> r##"<script>
function onEach(arr, func) {{ function onEach(arr, func) {{
if (arr && arr.length > 0 && func) {{ if (arr && arr.length > 0 && func) {{
for (var i = 0; i < arr.length; i++) {{ var length = arr.length;
func(arr[i]); var i;
for (i = 0; i < length; ++i) {{
if (func(arr[i])) {{
return true;
}} }}
}} }}
}} }}
return false;
}}
function onEachLazy(lazyArray, func) {{
return onEach(
Array.prototype.slice.call(lazyArray),
func);
}}
function hasClass(elem, className) {{ function hasClass(elem, className) {{
if (elem && className && elem.className) {{ return elem && elem.classList && elem.classList.contains(className);
var elemClass = elem.className;
var start = elemClass.indexOf(className);
if (start === -1) {{
return false;
}} else if (elemClass.length === className.length) {{
return true;
}} else {{
if (start > 0 && elemClass[start - 1] !== ' ') {{
return false;
}}
var end = start + className.length;
if (end < elemClass.length && elemClass[end] !== ' ') {{
return false;
}}
return true;
}}
if (start > 0 && elemClass[start - 1] !== ' ') {{
return false;
}}
var end = start + className.length;
if (end < elemClass.length && elemClass[end] !== ' ') {{
return false;
}}
return true;
}}
return false;
}} }}
onEach(document.getElementsByClassName('rust-example-rendered'), function(e) {{ onEachLazy(document.getElementsByClassName('rust-example-rendered'), function(e) {{
if (hasClass(e, 'compile_fail')) {{ if (hasClass(e, 'compile_fail')) {{
e.addEventListener("mouseover", function(event) {{ e.addEventListener("mouseover", function(event) {{
e.previousElementSibling.childNodes[0].style.color = '#f00'; e.parentElement.previousElementSibling.childNodes[0].style.color = '#f00';
}}); }});
e.addEventListener("mouseout", function(event) {{ e.addEventListener("mouseout", function(event) {{
e.previousElementSibling.childNodes[0].style.color = ''; e.parentElement.previousElementSibling.childNodes[0].style.color = '';
}}); }});
}} else if (hasClass(e, 'ignore')) {{ }} else if (hasClass(e, 'ignore')) {{
e.addEventListener("mouseover", function(event) {{ e.addEventListener("mouseover", function(event) {{
e.previousElementSibling.childNodes[0].style.color = '#ff9200'; e.parentElement.previousElementSibling.childNodes[0].style.color = '#ff9200';
}}); }});
e.addEventListener("mouseout", function(event) {{ e.addEventListener("mouseout", function(event) {{
e.previousElementSibling.childNodes[0].style.color = ''; e.parentElement.previousElementSibling.childNodes[0].style.color = '';
}}); }});
}} }}
}}); }});