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Diffstat (limited to 'src/doc/book/2018-edition/ferris.js')
-rw-r--r-- | src/doc/book/2018-edition/ferris.js | 51 |
1 files changed, 51 insertions, 0 deletions
diff --git a/src/doc/book/2018-edition/ferris.js b/src/doc/book/2018-edition/ferris.js new file mode 100644 index 000000000..5e79b3c71 --- /dev/null +++ b/src/doc/book/2018-edition/ferris.js @@ -0,0 +1,51 @@ +var ferrisTypes = [ + { + attr: 'does_not_compile', + title: 'This code does not compile!' + }, + { + attr: 'panics', + title: 'This code panics!' + }, + { + attr: 'unsafe', + title: 'This code block contains unsafe code.' + }, + { + attr: 'not_desired_behavior', + title: 'This code does not produce the desired behavior.' + } +] + +document.addEventListener('DOMContentLoaded', () => { + for (var ferrisType of ferrisTypes) { + attachFerrises(ferrisType) + } +}) + +function attachFerrises (type) { + var elements = document.getElementsByClassName(type.attr) + + for (var codeBlock of elements) { + var lines = codeBlock.textContent.split(/\r|\r\n|\n/).length - 1; + + if (lines >= 4) { + attachFerris(codeBlock, type) + } + } +} + +function attachFerris (element, type) { + var a = document.createElement('a') + a.setAttribute('href', 'ch00-00-introduction.html#ferris') + a.setAttribute('target', '_blank') + + var img = document.createElement('img') + img.setAttribute('src', 'img/ferris/' + type.attr + '.svg') + img.setAttribute('title', type.title) + img.className = 'ferris' + + a.appendChild(img) + + element.parentElement.insertBefore(a, element) +} |