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<!doctype html>
<html lang="en">
<head>
<meta charset="utf-8">
<title>Generate HTML slides</title>
<link rel="stylesheet" type="text/css" href="slides/slides.css"></head>
<body>
<h1>Generate HTML slides</h1>
<div class="slides">
<div class="page">
<div class="slide slide-header"><div class="slide-nr">1</div><div class="headers">
<h1>Generate HTML slides</h1>
</div></div>
<ul><li>
code to generate HTML slides from the input files
</li></ul>
</div>
<div class="page"><div class="slide"><div class="slide-nr">2</div>
<code>
<span class="macro">@Add(<span class="name">global elements</span>)</span><br/>
<span class="in1"></span><span class="macro">@Put(<span class="name">needed by write_html</span>)</span><br/>
<span class="in1"></span><span class="type">void</span> <span class="fn">write_html</span>() {<br/>
<span class="in2"></span><span class="keyword">for</span> (<span class="type">auto</span> &<span class="var">cur</span> : <span class="var">inputs</span>) {<br/>
<span class="in3"></span><span class="macro">@put(<span class="name">write cur HTML file</span>)</span><br/>
<span class="in2"></span>}<br/>
<span class="in1"></span>}<br/>
<span class="macro">@End(<span class="name">global elements</span>)</span><br/>
</code></div>
<ul><li>
generate HTML slides
</li></ul>
</div>
<div class="page"><div class="slide"><div class="slide-nr">3</div>
<code>
<span class="macro">@Def(<span class="name">write HTML file</span>)</span><br/>
<span class="in1"></span><span class="keyword">if</span> (<span class="var">html_files</span>) {<br/>
<span class="in2"></span><span class="fn">write_html</span>();<br/>
<span class="in1"></span>}<br/>
<span class="macro">@end(<span class="name">write HTML file</span>)</span><br/>
</code></div>
<ul><li>
generate HTML slides, if they should be generated
</li></ul>
</div>
<div class="page"><div class="slide"><div class="slide-nr">4</div>
<code>
<span class="macro">@def(<span class="name">write cur HTML file</span>)</span><br/>
<span class="in1"></span><span class="type">const</span> <span class="type">std</span>::<span class="type">string</span> &<span class="var">name</span> { <span class="var">cur</span>.<span class="var">first</span> };<br/>
<span class="in1"></span><span class="type">auto</span> <span class="var">ext</span> { <span class="var">name</span>.<span class="fn">rfind</span>(<span class="str">'.'</span>) };<br/>
<span class="in1"></span><span class="keyword">if</span> (<span class="var">ext</span> == <span class="type">std</span>::<span class="type">string</span>::<span class="var">npos</span>) {<br/>
<span class="in2"></span><span class="var">ext</span> = <span class="var">name</span>.<span class="fn">size</span>();<br/>
<span class="in1"></span>}<br/>
<span class="in1"></span><span class="type">std</span>::<span class="type">string</span> <span class="var">outPath</span> { <span class="var">name</span>.<span class="fn">substr</span>(<span class="num">0</span>, <span class="var">ext</span>) + <span class="str">".html"</span> };<br/>
<span class="in1"></span><span class="type">std</span>::<span class="type">ofstream</span> <span class="var">out</span> { <span class="var">outPath</span>.<span class="fn">c_str</span>() };<br/>
<span class="in1"></span><span class="macro">@put(<span class="name">write cur HTML file to out</span>)</span><br/>
<span class="in1"></span><span class="var">out</span>.<span class="fn">close</span>();<br/>
<span class="macro">@end(<span class="name">write cur HTML file</span>)</span><br/>
</code></div>
<ul><li>
the name of the HTML slides results from replacing the extension of the input file by <code>.<span class="var">html</span></code>
</li></ul>
</div>
<div class="page"><div class="slide"><div class="slide-nr">5</div>
<code>
<span class="macro">@def(<span class="name">write cur HTML file to out</span>)</span><br/>
<span class="in1"></span><span class="macro">@put(<span class="name">write from in to out</span>)</span><br/>
<span class="macro">@end(<span class="name">write cur HTML file to out</span>)</span><br/>
</code></div>
<ul><li>
write HTML to the just opened <code><span class="type">std</span>::<span class="type">ofstream</span></code> <code><span class="var">out</span></code>
</li></ul>
</div>
<div class="page"><div class="slide"><div class="slide-nr">6</div>
<code>
<span class="macro">@Def(<span class="name">needed by write_html</span>)</span><br/>
<span class="in1"></span><span class="type">enum</span> <span class="keyword">class</span> <span class="type">HtmlState</span> {<br/>
<span class="in2"></span><span class="var">nothing</span>,<br/>
<span class="in2"></span><span class="var">inSlide</span>,<br/>
<span class="in2"></span><span class="var">afterSlide</span>,<br/>
<span class="in2"></span><span class="var">afterSlides</span><br/>
<span class="in2"></span><span class="macro">@put(<span class="name">html state enums</span>)</span><br/>
<span class="in1"></span>};<br/>
<span class="macro">@end(<span class="name">needed by write_html</span>)</span><br/>
</code></div>
<ul><li>
the <code><span class="type">HtmlState</span></code> keeps track which part of a block is currently written
</li><li>
each input file must start with a header so that the HTML header can be written
</li></ul>
</div>
<div class="page"><div class="slide"><div class="slide-nr">7</div>
<code>
<span class="macro">@Add(<span class="name">needed by write_html</span>)</span><br/>
<span class="in1"></span><span class="type">struct</span> <span class="type">HtmlStatus</span> {<br/>
<span class="in2"></span><span class="macro">@put(<span class="name">html state elements</span>)</span><br/>
<span class="in1"></span>};<br/>
<span class="macro">@end(<span class="name">needed by write_html</span>)</span><br/>
</code></div>
<ul><li>
the current status needs more information besides the state
</li></ul>
</div>
<div class="page"><div class="slide"><div class="slide-nr">8</div>
<code>
<span class="macro">@def(<span class="name">html state elements</span>)</span><br/>
<span class="in1"></span><span class="type">HtmlState</span> <span class="var">state</span> = <span class="type">HtmlState</span>::<span class="var">nothing</span>;<br/>
<span class="macro">@end(<span class="name">html state elements</span>)</span><br/>
</code></div>
<ul><li>
the state is part of the status
</li></ul>
</div>
<div class="page"><div class="slide"><div class="slide-nr">9</div>
<code>
<span class="macro">@Add(<span class="name">includes</span>)</span><br/>
<span class="in1"></span><span class="keyword">#include</span> <<span class="type">string</span>><br/>
<span class="macro">@end(<span class="name">includes</span>)</span><br/>
</code></div>
<ul><li>
needs <code><span class="type">std</span>::<span class="type">string</span></code>
</li></ul>
</div>
<div class="page"><div class="slide"><div class="slide-nr">10</div>
<code>
<span class="macro">@def(<span class="name">write from in to out</span>)</span><br/>
<span class="in1"></span><span class="type">HtmlStatus</span> <span class="var">status</span>;<br/>
<span class="in1"></span><span class="type">int</span> <span class="var">slide_nr</span> { <span class="num">0</span> };<br/>
<span class="in1"></span><span class="keyword">for</span> (<span class="type">const</span> <span class="type">auto</span> &<span class="var">b</span> : <span class="var">cur</span>.<span class="var">second</span>.<span class="var">blocks</span>) {<br/>
<span class="in2"></span><span class="macro">@put(<span class="name">process block</span>)</span><br/>
<span class="in1"></span>}<br/>
<span class="macro">@end(<span class="name">write from in to out</span>)</span><br/>
</code></div>
<ul><li>
process each block
</li></ul>
</div>
<div class="page"><div class="slide"><div class="slide-nr">11</div>
<code>
<span class="macro">@def(<span class="name">process block</span>)</span><br/>
<span class="in1"></span><span class="keyword">if</span> (<span class="var">b</span>.<span class="var">state</span> == <span class="var">RS</span>::<span class="var">header</span>) {<br/>
<span class="in2"></span><span class="macro">@put(<span class="name">process header</span>)</span><br/>
<span class="in1"></span>}<br/>
<span class="macro">@end(<span class="name">process block</span>)</span><br/>
</code></div>
<ul><li>
write header
</li></ul>
</div>
<div class="page"><div class="slide"><div class="slide-nr">12</div>
<code>
<span class="macro">@add(<span class="name">process block</span>)</span><br/>
<span class="in1"></span><span class="keyword">if</span> (<span class="var">b</span>.<span class="var">state</span> == <span class="var">RS</span>::<span class="var">code</span>) {<br/>
<span class="in2"></span><span class="macro">@put(<span class="name">open code page</span>)</span><br/>
<span class="in2"></span><span class="keyword">for</span> (<span class="type">const</span> <span class="type">auto</span> &<span class="var">code</span> : <span class="var">b</span>.<span class="var">value</span>) {<br/>
<span class="in3"></span><span class="macro">@put(<span class="name">process code</span>)</span><br/>
<span class="in2"></span>}<br/>
<span class="in2"></span><span class="macro">@put(<span class="name">close code page</span>)</span><br/>
<span class="in2"></span><span class="keyword">if</span> (! <span class="var">b</span>.<span class="var">notes</span>.<span class="fn">empty</span>()) {<br/>
<span class="in3"></span><span class="keyword">for</span> (<span class="type">const</span> <span class="type">auto</span> &<span class="var">note</span> : <span class="var">b</span>.<span class="var">notes</span>) {<br/>
<span class="in4"></span><span class="macro">@mul(<span class="name">process note</span>)</span><br/>
<span class="in3"></span>}<br/>
<span class="in2"></span>} <span class="keyword">else</span> {<br/>
<span class="in3"></span><span class="var">out</span> << <span class="str">"<ul></ul>\n"</span>;<br/>
<span class="in2"></span>}<br/>
<span class="in2"></span><span class="macro">@mul(<span class="name">close specials</span>)</span><br/>
<span class="in2"></span><span class="macro">@mul(<span class="name">close slide</span>)</span><br/>
<span class="in1"></span>}<br/>
<span class="macro">@end(<span class="name">process block</span>)</span><br/>
</code></div>
<ul><li>
write code and notes
</li></ul>
</div>
<div class="page"><div class="slide"><div class="slide-nr">13</div>
<code>
<span class="macro">@add(<span class="name">process block</span>)</span><br/>
<span class="in1"></span><span class="keyword">if</span> (<span class="var">b</span>.<span class="var">state</span> == <span class="var">RS</span>::<span class="var">para</span>) {<br/>
<span class="in2"></span><span class="keyword">for</span> (<span class="type">const</span> <span class="type">auto</span> &<span class="var">para</span> : <span class="var">b</span>.<span class="var">value</span>) {<br/>
<span class="in3"></span><span class="macro">@put(<span class="name">process para</span>)</span><br/>
<span class="in3"></span><span class="macro">@mul(<span class="name">close specials</span>)</span><br/>
<span class="in2"></span>}<br/>
<span class="in2"></span><span class="macro">@mul(<span class="name">close specials</span>)</span><br/>
<span class="in1"></span>}<br/>
<span class="macro">@end(<span class="name">process block</span>)</span><br/>
</code></div>
<ul><li>
write paragraphs
</li></ul>
</div>
<div class="page"><div class="slide"><div class="slide-nr">14</div>
<code>
<span class="macro">@def(<span class="name">close slide</span>)</span><br/>
<span class="in1"></span><span class="var">out</span> << <span class="str">"</div>\n"</span>;<br/>
<span class="in1"></span><span class="var">status</span>.<span class="var">state</span> = <span class="type">HtmlState</span>::<span class="var">afterSlide</span>;<br/>
<span class="macro">@end(<span class="name">close slide</span>)</span><br/>
</code></div>
<ul><li>
writes a <code></<span class="var">div</span>></code> that closes a slide
</li><li>
and adjusts the state
</li></ul>
</div>
</div>
<h2>Headings</h2>
<div class="slides">
<div class="page">
<div class="slide slide-header"><div class="slide-nr">15</div><div class="headers">
<h2>Headings</h2>
</div></div>
<ul><li>
writes heading entry
</li></ul>
</div>
<div class="page"><div class="slide"><div class="slide-nr">16</div>
<code>
<span class="macro">@def(<span class="name">process header</span>)</span><br/>
<span class="in1"></span><span class="macro">@put(<span class="name">close previous HTML page</span>)</span><br/>
<span class="in1"></span><span class="macro">@mul(<span class="name">write header tag</span>)</span><br/>
<span class="in1"></span><span class="var">out</span> << <span class="str">"<div class=\"slides\">\n"</span>;<br/>
<span class="in1"></span><span class="var">out</span> << <span class="str">"<div class=\"page\">\n"</span>;<br/>
<span class="in1"></span><span class="var">out</span> << <span class="str">"<div class=\"slide slide-header\">"</span>;<br/>
<span class="in1"></span><span class="macro">@mul(<span class="name">slide nr</span>)</span><br/>
<span class="in1"></span><span class="var">out</span> << <span class="str">"<div class=\"headers\">\n"</span>;<br/>
<span class="in1"></span><span class="macro">@mul(<span class="name">write header tag</span>)</span><br/>
<span class="in1"></span><span class="keyword">if</span> (<span class="var">b</span>.<span class="var">value</span>.<span class="fn">size</span>() > <span class="num">1</span>) {<br/>
<span class="in2"></span><span class="var">out</span> << <span class="str">"<ul>\n"</span>;<br/>
<span class="in2"></span><span class="keyword">for</span> (<span class="type">unsigned</span> <span class="var">i</span> = <span class="num">1</span>; <span class="var">i</span> < <span class="var">b</span>.<span class="var">value</span>.<span class="fn">size</span>(); ++<span class="var">i</span>) {<br/>
<span class="in3"></span><span class="type">bool</span> <span class="var">hidden</span> { <span class="var">b</span>.<span class="var">value</span>[<span class="var">i</span>][<span class="num">0</span>] == <span class="str">'-'</span> };<br/>
<span class="in3"></span><span class="var">out</span> << <span class="str">"<li"</span>;<br/>
<span class="in3"></span><span class="keyword">if</span> (<span class="var">hidden</span>) {<br/>
<span class="in4"></span><span class="var">out</span> << <span class="str">" class=\"hidden\""</span>;<br/>
<span class="in3"></span>}<br/>
<span class="in3"></span><span class="var">out</span> << <span class="str">"><h"</span> << (<span class="var">b</span>.<span class="var">level</span> + <span class="num">1</span>) << <span class="str">'>'</span>;<br/>
<span class="in3"></span><span class="type">const</span> <span class="type">auto</span> &<span class="var">n</span> = <span class="var">b</span>.<span class="var">value</span>[<span class="var">i</span>];<br/>
<span class="in3"></span><span class="type">auto</span> <span class="var">bg</span> { <span class="var">n</span>.<span class="fn">begin</span>() };<br/>
<span class="in3"></span><span class="keyword">if</span> (<span class="var">hidden</span>) { ++<span class="var">bg</span>; }<br/>
<span class="in3"></span><span class="fn">process_content</span>(<span class="var">out</span>, <span class="var">bg</span>, <span class="var">n</span>.<span class="fn">end</span>());<br/>
<span class="in3"></span><span class="var">out</span> << <span class="str">"</h"</span> << (<span class="var">b</span>.<span class="var">level</span> + <span class="num">1</span>) << <span class="str">"></li>\n"</span>;<br/>
<span class="in2"></span>}<br/>
<span class="in2"></span><span class="var">out</span> << <span class="str">"</ul>\n"</span>;<br/>
<span class="in1"></span>}<br/>
<span class="in1"></span><span class="var">out</span> << <span class="str">"</div></div>\n"</span>;<br/>
<span class="in1"></span><span class="var">status</span>.<span class="var">state</span> = <span class="type">HtmlState</span>::<span class="var">inSlide</span>;<br/>
<span class="macro">@end(<span class="name">process header</span>)</span><br/>
</code></div>
<ul><li>
headers start a new slide group
</li><li>
before the slide group a HTML heading is written
</li><li>
the slide group starts with a slide that contains the heading
</li></ul>
</div>
<div class="page"><div class="slide"><div class="slide-nr">17</div>
<code>
<span class="macro">@add(<span class="name">process header</span>)</span><br/>
<span class="in1"></span><span class="keyword">for</span> (<span class="type">const</span> <span class="type">auto</span> &<span class="var">note</span> : <span class="var">b</span>.<span class="var">notes</span>) {<br/>
<span class="in2"></span><span class="macro">@mul(<span class="name">process note</span>)</span><br/>
<span class="in1"></span>}<br/>
<span class="in1"></span><span class="macro">@mul(<span class="name">close specials</span>)</span><br/>
<span class="in1"></span><span class="macro">@mul(<span class="name">close slide</span>)</span><br/>
<span class="macro">@end(<span class="name">process header</span>)</span><br/>
</code></div>
<ul><li>
add notes for the header
</li><li>
and close the slide
</li></ul>
</div>
<div class="page"><div class="slide"><div class="slide-nr">18</div>
<code>
<span class="macro">@Add(<span class="name">needed by write_html</span>)</span> <br/>
<span class="in1"></span><span class="type">void</span> <span class="fn">writeOneEscaped</span>(<span class="type">std</span>::<span class="type">ostream</span> &<span class="var">out</span>, <span class="type">char</span> <span class="var">ch</span>) {<br/>
<span class="in2"></span><span class="keyword">switch</span> (<span class="var">ch</span>) {<br/>
<span class="in3"></span><span class="macro">@put(<span class="name">escape special</span>)</span><br/>
<span class="in3"></span><span class="keyword">default</span>:<br/>
<span class="in4"></span><span class="var">out</span> << <span class="var">ch</span>;<br/>
<span class="in2"></span>}<br/>
<span class="in1"></span>}<br/>
<span class="macro">@end(<span class="name">needed by write_html</span>)</span><br/>
</code></div>
<ul><li>
writes a character in the HTML output
</li><li>
special characters are escaped
</li></ul>
</div>
<div class="page"><div class="slide"><div class="slide-nr">19</div>
<code>
<span class="macro">@Add(<span class="name">needed by write_html</span>)</span><br/>
<span class="in1"></span><span class="type">void</span> <span class="fn">writeEscaped</span>(<span class="type">std</span>::<span class="type">ostream</span> &<span class="var">out</span>, <span class="type">const</span> <span class="type">std</span>::<span class="type">string</span> &<span class="var">str</span>) {<br/>
<span class="in2"></span><span class="keyword">for</span> (<span class="type">char</span> <span class="var">ch</span> : <span class="var">str</span>) {<br/>
<span class="in3"></span><span class="fn">writeOneEscaped</span>(<span class="var">out</span>, <span class="var">ch</span>);<br/>
<span class="in2"></span>}<br/>
<span class="in1"></span>}<br/>
<span class="macro">@End(<span class="name">needed by write_html</span>)</span><br/>
</code></div>
<ul><li>
writes multiple characters in the HTML outputs
</li><li>
by calling the single character version
</li></ul>
</div>
<div class="page"><div class="slide"><div class="slide-nr">20</div>
<code>
<span class="macro">@def(<span class="name">escape special</span>)</span><br/>
<span class="in1"></span><span class="keyword">case</span> <span class="str">'<'</span>:<br/>
<span class="in2"></span><span class="var">out</span> << <span class="str">"&lt;"</span>;<br/>
<span class="in2"></span><span class="keyword">break</span>;<br/>
<span class="in1"></span><span class="keyword">case</span> <span class="str">'>'</span>:<br/>
<span class="in2"></span><span class="var">out</span> << <span class="str">"&gt;"</span>;<br/>
<span class="in2"></span><span class="keyword">break</span>;<br/>
<span class="in1"></span><span class="keyword">case</span> <span class="str">'&'</span>:<br/>
<span class="in2"></span><span class="var">out</span> << <span class="str">"&amp;"</span>;<br/>
<span class="in2"></span><span class="keyword">break</span>;<br/>
<span class="macro">@end(<span class="name">escape special</span>)</span><br/>
</code></div>
<ul><li>
the characters <code><</code>, <code>></code>, and <code>&</code> are replaced by their entities
</li></ul>
</div>
<div class="page"><div class="slide"><div class="slide-nr">21</div>
<code>
<span class="macro">@Add(<span class="name">needed by write_html</span>)</span><br/>
<span class="in1"></span><span class="macro">@put(<span class="name">process code helper</span>)</span><br/>
<span class="in1"></span><span class="type">void</span> <span class="fn">process_code</span>(<span class="type">std</span>::<span class="type">ostream</span> &<span class="var">out</span>, <span class="var">SI</span> <span class="var">begin</span>, <span class="var">SI</span> <span class="var">end</span>) {<br/>
<span class="in2"></span><span class="macro">@put(<span class="name">do code</span>)</span><br/>
<span class="in1"></span>}<br/>
<span class="macro">@end(<span class="name">needed by write_html</span>)</span><br/>
</code></div>
<ul><li>
writes a line of source code
</li><li>
this is used in code blocks
</li><li>
and in normal text that contains embedded code (e.g. in the notes or headings)
</li></ul>
</div>
<div class="page"><div class="slide"><div class="slide-nr">22</div>
<code>
<span class="macro">@Add(<span class="name">needed by write_html</span>)</span><br/>
<span class="in1"></span><span class="type">void</span> <span class="fn">process_content</span>(<span class="type">std</span>::<span class="type">ostream</span> &<span class="var">out</span>, <span class="var">SI</span> <span class="var">begin</span>, <span class="var">SI</span> <span class="var">end</span>) {<br/>
<span class="in2"></span><span class="macro">@put(<span class="name">process content line</span>)</span><br/>
<span class="in1"></span>}<br/>
<span class="macro">@end(<span class="name">needed by write_html</span>)</span><br/>
</code></div>
<ul><li>
writes normal Markdown content to HTML
</li><li>
embedded code is pretty printed
</li></ul>
</div>
<div class="page"><div class="slide"><div class="slide-nr">23</div>
<code>
<span class="macro">@def(<span class="name">write header tag</span>)</span> {<br/>
<span class="in1"></span><span class="var">out</span> << <span class="str">"<h"</span> << <span class="var">b</span>.<span class="var">level</span> << <span class="str">'>'</span>;<br/>
<span class="in1"></span><span class="type">const</span> <span class="type">auto</span> &<span class="var">n</span> = <span class="var">b</span>.<span class="var">value</span>[<span class="num">0</span>];<br/>
<span class="in1"></span><span class="fn">process_content</span>(<span class="var">out</span>, <span class="var">n</span>.<span class="fn">begin</span>(), <span class="var">n</span>.<span class="fn">end</span>());<br/>
<span class="in1"></span><span class="var">out</span> << <span class="str">"</h"</span> << <span class="var">b</span>.<span class="var">level</span> << <span class="str">">\n"</span>;<br/>
} <span class="macro">@end(<span class="name">write header tag</span>)</span><br/>
</code></div>
<ul><li>
writes a HTML header tag of the right level
</li></ul>
</div>
<div class="page"><div class="slide"><div class="slide-nr">24</div>
<code>
<span class="macro">@def(<span class="name">close previous HTML page</span>)</span><br/>
<span class="in1"></span><span class="keyword">switch</span> (<span class="var">status</span>.<span class="var">state</span>) {<br/>
<span class="in2"></span><span class="keyword">case</span> <span class="type">HtmlState</span>::<span class="var">nothing</span>:<br/>
<span class="in3"></span><span class="macro">@put(<span class="name">write HTML header</span>)</span><br/>
<span class="in3"></span><span class="keyword">break</span>;<br/>
<span class="in2"></span><span class="keyword">case</span> <span class="type">HtmlState</span>::<span class="var">inSlide</span>:<br/>
<span class="in3"></span><span class="var">out</span> << <span class="str">"</div>\n"</span>;<br/>
<span class="in3"></span>// <span class="var">fallthrough</span><br/>
<span class="in2"></span><span class="keyword">default</span>:<br/>
<span class="in3"></span><span class="var">out</span> << <span class="str">"</div>\n"</span>;<br/>
<span class="in1"></span>}<br/>
<span class="macro">@end(<span class="name">close previous HTML page</span>)</span><br/>
</code></div>
<ul><li>
closes the current slide
</li><li>
and the current slide group
</li><li>
at the beginning of the document the HTML header is written
</li></ul>
</div>
<div class="page"><div class="slide"><div class="slide-nr">25</div>
<code>
<span class="macro">@def(<span class="name">write HTML header</span>)</span><br/>
<span class="in1"></span><span class="var">out</span> << <span class="str">"<!doctype html>\n"</span>;<br/>
<span class="in1"></span><span class="var">out</span> << <span class="str">"<html lang=\"en\">\n"</span>;<br/>
<span class="in1"></span><span class="var">out</span> << <span class="str">"<head>\n"</span>;<br/>
<span class="in1"></span><span class="macro">@put(<span class="name">write HTML header entries</span>)</span><br/>
<span class="in1"></span><span class="var">out</span> << <span class="str">"</head>\n"</span>;<br/>
<span class="in1"></span><span class="var">out</span> << <span class="str">"<body>\n"</span>;<br/>
<span class="macro">@end(<span class="name">write HTML header</span>)</span><br/>
</code></div>
<ul><li>
write HTML header and opens the <code><<span class="var">body</span>></code> tag
</li></ul>
</div>
<div class="page"><div class="slide"><div class="slide-nr">26</div>
<code>
<span class="macro">@def(<span class="name">write HTML header entries</span>)</span><br/>
<span class="in1"></span><span class="var">out</span> << <span class="str">"<meta charset=\"utf-8\">\n"</span>;<br/>
<span class="in1"></span><span class="var">out</span> << <span class="str">"<title>"</span>;<br/>
<span class="in1"></span><span class="fn">writeEscaped</span>(<span class="var">out</span>, <span class="var">b</span>.<span class="var">value</span>[<span class="num">0</span>]);<br/>
<span class="in1"></span><span class="var">out</span> << <span class="str">"</title>\n"</span>;<br/>
<span class="in1"></span><span class="var">out</span> << <span class="str">"<link rel=\"stylesheet\" type=\"text/css\" href=\""</span> <<<br/>
<span class="in2"></span><span class="var">stylesheet</span> << <span class="str">"\">"</span>;<br/>
<span class="macro">@end(<span class="name">write HTML header entries</span>)</span><br/>
</code></div>
<ul><li>
the document is encoded in <code><span class="var">UTF</span>-<span class="num">8</span></code>
</li><li>
the first header of the input file is also the <code><<span class="var">title</span>></code> of the HTML document
</li><li>
also include a stylesheet
</li></ul>
</div>
</div>
<h2>Format Code</h2>
<div class="slides">
<div class="page">
<div class="slide slide-header"><div class="slide-nr">27</div><div class="headers">
<h2>Format Code</h2>
</div></div>
<ul><li>
Code is pretty printed
</li></ul>
</div>
<div class="page"><div class="slide"><div class="slide-nr">28</div>
<code>
<span class="macro">@def(<span class="name">html state enums</span>)</span><br/>
<span class="in1"></span>, <span class="var">inCode</span><br/>
<span class="macro">@end(<span class="name">html state enums</span>)</span><br/>
</code></div>
<ul><li>
special state to format code
</li></ul>
</div>
<div class="page"><div class="slide"><div class="slide-nr">29</div>
<code>
<span class="macro">@def(<span class="name">open code page</span>)</span><br/>
<span class="in1"></span><span class="keyword">if</span> (<span class="var">status</span>.<span class="var">state</span> == <span class="type">HtmlState</span>::<span class="var">afterSlides</span>) {<br/>
<span class="in2"></span><span class="var">out</span> << <span class="str">"<div class=\"slides\">\n"</span>;<br/>
<span class="in1"></span>}<br/>
<span class="macro">@end(<span class="name">open code page</span>)</span><br/>
</code></div>
<ul><li>
close a previous slide, if it is open
</li></ul>
</div>
<div class="page"><div class="slide"><div class="slide-nr">30</div>
<code>
<span class="macro">@add(<span class="name">open code page</span>)</span><br/>
<span class="in1"></span><span class="keyword">if</span> (<span class="var">status</span>.<span class="var">state</span> == <span class="type">HtmlState</span>::<span class="var">inSlide</span>) {<br/>
<span class="in2"></span><span class="var">out</span> << <span class="str">"</div>\n"</span>;<br/>
<span class="in1"></span>}<br/>
<span class="in1"></span><span class="var">out</span> << <span class="str">"<div class=\"page\"><div class=\"slide\">"</span>;<br/>
<span class="in1"></span><span class="macro">@mul(<span class="name">slide nr</span>)</span><br/>
<span class="in1"></span><span class="var">out</span> << <span class="str">"\n<code>\n"</span>;<br/>
<span class="in1"></span><span class="var">status</span>.<span class="var">state</span> = <span class="type">HtmlState</span>::<span class="var">inCode</span>;<br/>
<span class="macro">@end(<span class="name">open code page</span>)</span><br/>
</code></div>
<ul><li>
a code slide contains one big <code><<span class="var">code</span>></code> tag
</li><li>
and sets the current state
</li></ul>
</div>
<div class="page"><div class="slide"><div class="slide-nr">31</div>
<code>
<span class="macro">@def(<span class="name">close code page</span>)</span><br/>
<span class="in1"></span><span class="var">out</span> << <span class="str">"</code></div>\n"</span>;<br/>
<span class="in1"></span><span class="var">status</span>.<span class="var">state</span> = <span class="type">HtmlState</span>::<span class="var">afterSlide</span>;<br/>
<span class="macro">@end(<span class="name">close code page</span>)</span><br/>
</code></div>
<ul><li>
closes <code><<span class="var">code</span>></code> tag when the slide is closed
</li></ul>
</div>
<div class="page"><div class="slide"><div class="slide-nr">32</div>
<code>
<span class="macro">@add(<span class="name">write from in to out</span>)</span><br/>
<span class="in1"></span><span class="keyword">if</span> (<span class="var">status</span>.<span class="var">state</span> == <span class="type">HtmlState</span>::<span class="var">inCode</span>) {<br/>
<span class="in2"></span><span class="type">std</span>::<span class="var">cerr</span> << <span class="str">"unterminated code block\n"</span>;<br/>
<span class="in1"></span>}<br/>
<span class="macro">@end(<span class="name">write from in to out</span>)</span><br/>
</code></div>
<ul><li>
it is an error, if the code block was not closed at the end of a file
</li></ul>
</div>
<div class="page"><div class="slide"><div class="slide-nr">33</div>
<code>
<span class="macro">@add(<span class="name">write from in to out</span>)</span><br/>
<span class="in1"></span><span class="keyword">if</span> (<span class="var">status</span>.<span class="var">state</span> != <span class="type">HtmlState</span>::<span class="var">nothing</span>) {<br/>
<span class="in2"></span><span class="var">out</span> << <span class="str">"</body>\n</html>\n"</span>;<br/>
<span class="in1"></span>}<br/>
<span class="macro">@end(<span class="name">write from in to out</span>)</span><br/>
</code></div>
<ul><li>
closes the <code><<span class="var">body</span>></code> tag at the end of the input file
</li><li>
if some output was written
</li></ul>
</div>
<div class="page"><div class="slide"><div class="slide-nr">34</div>
<code>
<span class="macro">@def(<span class="name">process code</span>)</span><br/>
<span class="in1"></span><span class="fn">process_code</span>(<span class="var">out</span>, <span class="var">code</span>.<span class="fn">begin</span>(), <span class="var">code</span>.<span class="fn">end</span>());<br/>
<span class="in1"></span><span class="var">out</span> << <span class="str">"<br/>\n"</span>;<br/>
<span class="macro">@end(<span class="name">process code</span>)</span><br/>
</code></div>
<ul><li>
processes code in a code slide
</li><li>
write the code and adds a new line
</li></ul>
</div>
<div class="page"><div class="slide"><div class="slide-nr">35</div>
<code>
<span class="macro">@def(<span class="name">do code</span>)</span><br/>
<span class="in1"></span><span class="type">int</span> <span class="var">indent</span> = <span class="num">0</span>;<br/>
<span class="in1"></span><span class="keyword">while</span> (<span class="var">begin</span> != <span class="var">end</span> && *<span class="var">begin</span> == <span class="str">'\t'</span>) {<br/>
<span class="in2"></span>++<span class="var">indent</span>; ++<span class="var">begin</span>;<br/>
<span class="in1"></span>}<br/>
<span class="in1"></span><span class="keyword">if</span> (<span class="var">indent</span>) {<br/>
<span class="in2"></span><span class="var">out</span> << <span class="str">"<span class=\"in"</span> << <span class="var">indent</span> << <span class="str">"\"></span>"</span>;<br/>
<span class="in1"></span>}<br/>
<span class="macro">@end(<span class="name">do code</span>)</span><br/>
</code></div>
<ul><li>
counts the tab stops at the beginning of the line
</li><li>
an <code><<span class="var">span</span>></code> for the indentation is written
</li></ul>
</div>
<div class="page"><div class="slide"><div class="slide-nr">36</div>
<code>
<span class="macro">@add(<span class="name">do code</span>)</span><br/>
<span class="in1"></span><span class="keyword">for</span> (; <span class="var">begin</span> != <span class="var">end</span>; ++<span class="var">begin</span>) {<br/>
<span class="in2"></span><span class="macro">@put(<span class="name">process code ch</span>)</span><br/>
<span class="in2"></span><span class="fn">writeOneEscaped</span>(<span class="var">out</span>, *<span class="var">begin</span>);<br/>
<span class="in1"></span>}<br/>
<span class="macro">@end(<span class="name">do code</span>)</span><br/>
</code></div>
<ul><li>
process each character
</li><li>
if their is no special treatment, copy it to HTML
</li></ul>
</div>
<div class="page"><div class="slide"><div class="slide-nr">37</div>
<code>
<span class="macro">@def(<span class="name">process code ch</span>)</span><br/>
<span class="in1"></span><span class="keyword">if</span> (*<span class="var">begin</span> == <span class="str">'`'</span> || *<span class="var">begin</span> == <span class="str">'\''</span> || *<span class="var">begin</span> == <span class="str">'"'</span>) {<br/>
<span class="in2"></span><span class="macro">@put(<span class="name">process string</span>)</span><br/>
<span class="in2"></span><span class="keyword">continue</span>;<br/>
<span class="in1"></span>}<br/>
<span class="macro">@end(<span class="name">process code ch</span>)</span><br/>
</code></div>
<ul><li>
treat the next characters as a string
</li></ul>
</div>
<div class="page"><div class="slide"><div class="slide-nr">38</div>
<code>
<span class="macro">@def(<span class="name">process string</span>)</span><br/>
<span class="in1"></span><span class="type">auto</span> <span class="var">w</span> = <span class="var">begin</span> + <span class="num">1</span>;<br/>
<span class="in1"></span><span class="keyword">while</span> (<span class="var">w</span> != <span class="var">end</span> && *<span class="var">w</span> != *<span class="var">begin</span>) {<br/>
<span class="in2"></span><span class="keyword">if</span> (*<span class="var">w</span> == <span class="str">'\\'</span>) {<br/>
<span class="in3"></span>++<span class="var">w</span>;<br/>
<span class="in3"></span><span class="keyword">if</span> (<span class="var">w</span> == <span class="var">end</span>) { <span class="keyword">break</span>; }<br/>
<span class="in2"></span>}<br/>
<span class="in2"></span>++<span class="var">w</span>;<br/>
<span class="in1"></span>}<br/>
<span class="in1"></span><span class="keyword">if</span> (<span class="var">w</span> == <span class="var">end</span>) {<br/>
<span class="in2"></span><span class="fn">writeOneEscaped</span>(<span class="var">out</span>, *<span class="var">begin</span>);<br/>
<span class="in2"></span><span class="keyword">continue</span>;<br/>
<span class="in1"></span>}<br/>
<span class="macro">@end(<span class="name">process string</span>)</span><br/>
</code></div>
<ul><li>
search for the end of the string
</li><li>
watch out for escape characters on the way
</li><li>
if no end is found, then treat the first character as an ordinary character
</li></ul>
</div>
<div class="page"><div class="slide"><div class="slide-nr">39</div>
<code>
<span class="macro">@def(<span class="name">process code helper</span>)</span><br/>
<span class="in1"></span><span class="type">void</span> <span class="fn">span_str</span>(<span class="type">std</span>::<span class="type">ostream</span> &<span class="var">out</span>, <span class="type">const</span> <span class="type">char</span> *<span class="var">cls</span>, <span class="type">const</span> <span class="type">std</span>::<span class="type">string</span> &<span class="var">s</span>) {<br/>
<span class="in2"></span><span class="var">out</span> << <span class="str">"<span class=\""</span> << <span class="var">cls</span> << <span class="str">"\">"</span>;<br/>
<span class="in2"></span><span class="fn">writeEscaped</span>(<span class="var">out</span>, <span class="var">s</span>);<br/>
<span class="in2"></span><span class="var">out</span> << <span class="str">"</span>"</span>;<br/>
<span class="in1"></span>}<br/>
<span class="macro">@end(<span class="name">process code helper</span>)</span><br/>
</code></div>
<ul><li>
writes a <code><<span class="var">span</span>></code> with the given class around a string
</li></ul>
</div>
<div class="page"><div class="slide"><div class="slide-nr">40</div>
<code>
<span class="macro">@add(<span class="name">process string</span>)</span><br/>
<span class="in1"></span><span class="type">std</span>::<span class="type">string</span> <span class="var">name</span> { <span class="var">begin</span>, <span class="var">w</span> + <span class="num">1</span> };<br/>
<span class="in1"></span><span class="fn">span_str</span>(<span class="var">out</span>, <span class="str">"str"</span>, <span class="var">name</span>);<br/>
<span class="in1"></span><span class="var">begin</span> = <span class="var">w</span>;<br/>
<span class="macro">@end(<span class="name">process string</span>)</span><br/>
</code></div>
<ul><li>
write formatted string
</li></ul>
</div>
<div class="page"><div class="slide"><div class="slide-nr">41</div>
<code>
<span class="macro">@add(<span class="name">process code ch</span>)</span><br/>
<span class="in1"></span><span class="keyword">if</span> (*<span class="var">begin</span> == <span class="str">'@'</span>) {<br/>
<span class="in2"></span><span class="type">auto</span> <span class="var">nb</span> = <span class="var">begin</span> + <span class="num">1</span>;<br/>
<span class="in2"></span><span class="type">auto</span> <span class="var">ne</span> = <span class="var">nb</span>;<br/>
<span class="in2"></span><span class="macro">@put(<span class="name">process cmd</span>)</span><br/>
<span class="in1"></span>}<br/>
<span class="macro">@end(<span class="name">process code ch</span>)</span><br/>
</code></div>
<ul><li>
process a command
</li></ul>
</div>
<div class="page"><div class="slide"><div class="slide-nr">42</div>
<code>
<span class="macro">@def(<span class="name">process cmd</span>)</span><br/>
<span class="in1"></span><span class="keyword">while</span> (<span class="var">ne</span> != <span class="var">end</span> && *<span class="var">ne</span> != <span class="str">'('</span>) {<br/>
<span class="in2"></span><span class="keyword">if</span> (! <span class="fn">isalpha</span>(*<span class="var">ne</span>)) {<br/>
<span class="in3"></span><span class="var">ne</span> = <span class="var">end</span>;<br/>
<span class="in3"></span><span class="keyword">break</span>;<br/>
<span class="in2"></span>}<br/>
<span class="in2"></span>++<span class="var">ne</span>;<br/>
<span class="in1"></span>}<br/>
<span class="macro">@end(<span class="name">process cmd</span>)</span><br/>
</code></div>
<ul><li>
check that the command name only consists of letters
</li><li>
and ends with an open parenthesis
</li></ul>
</div>
<div class="page"><div class="slide"><div class="slide-nr">43</div>
<code>
<span class="macro">@add(<span class="name">process cmd</span>)</span><br/>
<span class="in1"></span><span class="keyword">if</span> (<span class="var">ne</span> != <span class="var">end</span>) {<br/>
<span class="in2"></span><span class="type">std</span>::<span class="type">string</span> <span class="var">name</span> {<span class="var">nb</span>, <span class="var">ne</span>};<br/>
<span class="in2"></span><span class="type">auto</span> <span class="var">ab</span> = <span class="var">ne</span> + <span class="num">1</span>;<br/>
<span class="in2"></span><span class="type">auto</span> <span class="var">ae</span> = <span class="var">ab</span>;<br/>
<span class="in2"></span><span class="macro">@put(<span class="name">macro loop</span>)</span><br/>
<span class="in1"></span>}<br/>
<span class="macro">@end(<span class="name">process cmd</span>)</span><br/>
</code></div>
<ul><li>
if a command is found, parse its argument
</li></ul>
</div>
<div class="page"><div class="slide"><div class="slide-nr">44</div>
<code>
<span class="macro">@def(<span class="name">macro loop</span>)</span><br/>
<span class="in1"></span><span class="keyword">while</span> (<span class="var">ae</span> != <span class="var">end</span> && *<span class="var">ae</span> != <span class="str">')'</span>) {<br/>
<span class="in2"></span><span class="keyword">if</span> (*<span class="var">ae</span> == <span class="str">'@'</span>) {<br/>
<span class="in3"></span>++<span class="var">ae</span>;<br/>
<span class="in3"></span><span class="keyword">if</span> (<span class="var">ae</span> == <span class="var">end</span>) { <span class="keyword">break</span>; }<br/>
<span class="in2"></span>}<br/>
<span class="in2"></span>++<span class="var">ae</span>;<br/>
<span class="in1"></span>}<br/>
<span class="in1"></span><span class="keyword">if</span> (<span class="var">ae</span> != <span class="var">end</span>) {<br/>
<span class="in2"></span><span class="type">std</span>::<span class="type">string</span> <span class="var">arg</span> {<span class="var">ab</span>, <span class="var">ae</span>};<br/>
<span class="in2"></span><span class="macro">@put(<span class="name">got macro</span>)</span><br/>
<span class="in2"></span><span class="keyword">continue</span>;<br/>
<span class="in1"></span>}<br/>
<span class="macro">@end(<span class="name">macro loop</span>)</span><br/>
</code></div>
<ul><li>
if a command argument is parsed, the command is parsed
</li></ul>
</div>
<div class="page"><div class="slide"><div class="slide-nr">45</div>
<code>
<span class="macro">@def(<span class="name">got macro</span>)</span><br/>
<span class="in1"></span><span class="keyword">do</span> {<br/>
<span class="in2"></span><span class="macro">@put(<span class="name">special macro</span>)</span><br/>
<span class="in2"></span><span class="macro">@put(<span class="name">macro default</span>)</span><br/>
<span class="in1"></span>} <span class="keyword">while</span> (<span class="num">false</span>);<br/>
<span class="in1"></span><span class="var">begin</span> = <span class="var">ae</span>;<br/>
<span class="macro">@end(<span class="name">got macro</span>)</span><br/>
</code></div>
<ul><li>
special commands can change the formatting and are processed first
</li><li>
if the command is not special, it will be copied to HTML with some warning
</li></ul>
</div>
<div class="page"><div class="slide"><div class="slide-nr">46</div>
<code>
<span class="macro">@def(<span class="name">macro default</span>)</span><br/>
<span class="in1"></span><span class="fn">writeOneEscaped</span>(<span class="var">out</span>, <span class="str">'@'</span>);<br/>
<span class="in1"></span><span class="fn">writeEscaped</span>(<span class="var">out</span>, <span class="var">name</span>);<br/>
<span class="in1"></span><span class="fn">writeOneEscaped</span>(<span class="var">out</span>, <span class="str">'('</span>);<br/>
<span class="in1"></span><span class="fn">writeEscaped</span>(<span class="var">out</span>, <span class="var">arg</span>);<br/>
<span class="in1"></span><span class="fn">writeOneEscaped</span>(<span class="var">out</span>, <span class="str">')'</span>);<br/>
<span class="macro">@end(<span class="name">macro default</span>)</span><br/>
</code></div>
<ul><li>
write error message
</li><li>
and copy command to HTML
</li></ul>
</div>
<div class="page"><div class="slide"><div class="slide-nr">47</div>
<code>
<span class="macro">@def(<span class="name">special macro</span>)</span><br/>
<span class="in1"></span><span class="keyword">static</span> <span class="type">Set</span> <span class="var">macros</span> = {<br/>
<span class="in2"></span><span class="str">"def"</span>, <span class="str">"end"</span>, <span class="str">"add"</span>, <span class="str">"put"</span>, <span class="str">"mul"</span>, <span class="str">"Def"</span>,<br/>
<span class="in2"></span><span class="str">"Add"</span>, <span class="str">"Mul"</span>, <span class="str">"rep"</span>, <span class="str">"Rep"</span>, <span class="str">"Put"</span>, <span class="str">"End"</span><br/>
<span class="in1"></span>};<br/>
<span class="macro">@end(<span class="name">special macro</span>)</span><br/>
</code></div>
<ul><li>
known commands
</li></ul>
</div>
<div class="page"><div class="slide"><div class="slide-nr">48</div>
<code>
<span class="macro">@add(<span class="name">special macro</span>)</span><br/>
<span class="in1"></span><span class="keyword">if</span> (<span class="var">macros</span>.<span class="fn">find</span>(<span class="var">name</span>) != <span class="var">macros</span>.<span class="fn">end</span>()) {<br/>
<span class="in2"></span><span class="fn">writeMacroHeader</span>(<span class="var">out</span>, <span class="var">name</span>);<br/>
<span class="in2"></span><span class="fn">writeEscaped</span>(<span class="var">out</span>, <span class="var">arg</span>);<br/>
<span class="in2"></span><span class="var">out</span> << <span class="str">"</span>)</span>"</span>;<br/>
<span class="in2"></span><span class="keyword">break</span>;<br/>
<span class="in1"></span>}<br/>
<span class="macro">@end(<span class="name">special macro</span>)</span><br/>
</code></div>
<ul><li>
fragment commands are copied with pretty printing to HTML
</li></ul>
</div>
<div class="page"><div class="slide"><div class="slide-nr">49</div>
<code>
<span class="macro">@add(<span class="name">special macro</span>)</span><br/>
<span class="in1"></span><span class="keyword">if</span> (<span class="var">name</span> == <span class="str">"inc"</span>) {<br/>
<span class="in2"></span><span class="macro">@put(<span class="name">write include</span>)</span><br/>
<span class="in2"></span><span class="keyword">break</span>;<br/>
<span class="in1"></span>}<br/>
<span class="macro">@end(<span class="name">special macro</span>)</span><br/>
</code></div>
<ul><li>
include commands are treated special
</li></ul>
</div>
<div class="page"><div class="slide"><div class="slide-nr">50</div>
<code>
<span class="macro">@def(<span class="name">write include</span>)</span><br/>
<span class="in1"></span><span class="type">auto</span> <span class="var">ext</span> = <span class="var">arg</span>.<span class="fn">find_last_of</span>(<span class="str">'.'</span>);<br/>
<span class="in1"></span><span class="keyword">if</span> (<span class="var">ext</span> == <span class="type">std</span>::<span class="type">string</span>::<span class="var">npos</span>) {<br/>
<span class="in2"></span><span class="var">ext</span> = <span class="var">arg</span>.<span class="fn">size</span>();<br/>
<span class="in1"></span>}<br/>
<span class="in1"></span><span class="fn">writeMacroHeader</span>(<span class="var">out</span>, <span class="var">name</span>);<br/>
<span class="in1"></span><span class="var">out</span> << <span class="str">"<a href=\""</span> << <span class="var">arg</span>.<span class="fn">substr</span>(<span class="num">0</span>, <span class="var">ext</span>) << <span class="str">".html\">"</span>;<br/>
<span class="in1"></span><span class="var">out</span> << <span class="var">arg</span> << <span class="str">"</a></span>)</span>"</span>;<br/>
<span class="macro">@end(<span class="name">write include</span>)</span><br/>
</code></div>
<ul><li>
includes also contain a link to the referenced file
</li></ul>
</div>
<div class="page"><div class="slide"><div class="slide-nr">51</div>
<code>
<span class="macro">@add(<span class="name">special macro</span>)</span><br/>
<span class="in1"></span><span class="keyword">if</span> (<span class="var">name</span> == <span class="str">"s"</span> || <span class="var">name</span> == <span class="str">"str"</span>) {<br/>
<span class="in2"></span><span class="fn">writeMacroClass</span>(<span class="var">out</span>, <span class="str">"str"</span>);<br/>
<span class="in2"></span><span class="keyword">for</span> (<span class="type">auto</span> <span class="var">x</span> = <span class="var">arg</span>.<span class="fn">begin</span>();; ++<span class="var">x</span>) {<br/>
<span class="in3"></span><span class="keyword">if</span> (*<span class="var">x</span> == <span class="str">'@'</span>) {<br/>
<span class="in4"></span>++<span class="var">x</span>;<br/>
<span class="in3"></span>}<br/>
<span class="in3"></span><span class="keyword">if</span> (<span class="var">x</span> == <span class="var">arg</span>.<span class="fn">end</span>()) { <span class="keyword">break</span>; }<br/>
<span class="in3"></span><span class="fn">writeOneEscaped</span>(<span class="var">out</span>, *<span class="var">x</span>);<br/>
<span class="in2"></span>}<br/>
<span class="in2"></span><span class="var">out</span> << <span class="str">"</span>"</span>;<br/>
<span class="in2"></span><span class="keyword">break</span>;<br/>
<span class="in1"></span>}<br/>
<span class="macro">@end(<span class="name">special macro</span>)</span><br/>
</code></div>
<ul><li>
format the argument as string
</li></ul>
</div>
<div class="page"><div class="slide"><div class="slide-nr">52</div>
<code>
<span class="macro">@add(<span class="name">special macro</span>)</span><br/>
<span class="in1"></span><span class="keyword">if</span> (<span class="var">name</span> == <span class="str">"f"</span> || <span class="var">name</span> == <span class="str">"fn"</span>) {<br/>
<span class="in2"></span><span class="fn">writeMacroClass</span>(<span class="var">out</span>, <span class="str">"fn"</span>);<br/>
<span class="in2"></span><span class="fn">writeEscaped</span>(<span class="var">out</span>, <span class="var">arg</span>);<br/>
<span class="in2"></span><span class="var">out</span> << <span class="str">"</span>"</span>;<br/>
<span class="in2"></span><span class="keyword">break</span>;<br/>
<span class="in1"></span>}<br/>
<span class="macro">@end(<span class="name">special macro</span>)</span><br/>
</code></div>
<ul><li>
format the argument as a function
</li></ul>
</div>
<div class="page"><div class="slide"><div class="slide-nr">53</div>
<code>
<span class="macro">@add(<span class="name">special macro</span>)</span><br/>
<span class="in1"></span><span class="keyword">if</span> (<span class="var">name</span> == <span class="str">"v"</span> || <span class="var">name</span> == <span class="str">"var"</span>) {<br/>
<span class="in2"></span><span class="fn">writeMacroClass</span>(<span class="var">out</span>, <span class="str">"var"</span>);<br/>
<span class="in2"></span><span class="fn">writeEscaped</span>(<span class="var">out</span>, <span class="var">arg</span>);<br/>
<span class="in2"></span><span class="var">out</span> << <span class="str">"</span>"</span>;<br/>
<span class="in2"></span><span class="keyword">break</span>;<br/>
<span class="in1"></span>}<br/>
<span class="macro">@end(<span class="name">special macro</span>)</span><br/>
</code></div>
<ul><li>
format the argument as a variable
</li></ul>
</div>
<div class="page"><div class="slide"><div class="slide-nr">54</div>
<code>
<span class="macro">@add(<span class="name">special macro</span>)</span><br/>
<span class="in1"></span><span class="keyword">if</span> (<span class="var">name</span> == <span class="str">"k"</span> || <span class="var">name</span> == <span class="str">"key"</span>) {<br/>
<span class="in2"></span><span class="fn">writeMacroClass</span>(<span class="var">out</span>, <span class="str">"keyword"</span>);<br/>
<span class="in2"></span><span class="fn">writeEscaped</span>(<span class="var">out</span>, <span class="var">arg</span>);<br/>
<span class="in2"></span><span class="var">out</span> << <span class="str">"</span>"</span>;<br/>
<span class="in2"></span><span class="keyword">break</span>;<br/>
<span class="in1"></span>}<br/>
<span class="macro">@end(<span class="name">special macro</span>)</span><br/>
</code></div>
<ul><li>
format the argument as a keyword
</li></ul>
</div>
<div class="page"><div class="slide"><div class="slide-nr">55</div>
<code>
<span class="macro">@add(<span class="name">special macro</span>)</span><br/>
<span class="in1"></span><span class="keyword">if</span> (<span class="var">name</span> == <span class="str">"n"</span> || <span class="var">name</span> == <span class="str">"num"</span>) {<br/>
<span class="in2"></span><span class="fn">writeMacroClass</span>(<span class="var">out</span>, <span class="str">"num"</span>);<br/>
<span class="in2"></span><span class="fn">writeEscaped</span>(<span class="var">out</span>, <span class="var">arg</span>);<br/>
<span class="in2"></span><span class="var">out</span> << <span class="str">"</span>"</span>;<br/>
<span class="in2"></span><span class="keyword">break</span>;<br/>
<span class="in1"></span>}<br/>
<span class="macro">@end(<span class="name">special macro</span>)</span><br/>
</code></div>
<ul><li>
format the argument as a numeric value
</li></ul>
</div>
<div class="page"><div class="slide"><div class="slide-nr">56</div>
<code>
<span class="macro">@add(<span class="name">special macro</span>)</span><br/>
<span class="in1"></span><span class="keyword">if</span> (<span class="var">name</span> == <span class="str">"t"</span> || <span class="var">name</span> == <span class="str">"typ"</span>) {<br/>
<span class="in2"></span><span class="fn">writeMacroClass</span>(<span class="var">out</span>, <span class="str">"type"</span>);<br/>
<span class="in2"></span><span class="fn">writeEscaped</span>(<span class="var">out</span>, <span class="var">arg</span>);<br/>
<span class="in2"></span><span class="var">out</span> << <span class="str">"</span>"</span>;<br/>
<span class="in2"></span><span class="keyword">break</span>;<br/>
<span class="in1"></span>}<br/>
<span class="macro">@end(<span class="name">special macro</span>)</span><br/>
</code></div>
<ul><li>
format the argument as a type
</li></ul>
</div>
<div class="page"><div class="slide"><div class="slide-nr">57</div>
<code>
<span class="macro">@add(<span class="name">special macro</span>)</span><br/>
<span class="in1"></span><span class="keyword">if</span> (<span class="var">name</span> == <span class="str">"b"</span> || <span class="var">name</span> == <span class="str">"br"</span>) {<br/>
<span class="in2"></span><span class="fn">writeMacroClass</span>(<span class="var">out</span>, <span class="str">"virt"</span>);<br/>
<span class="in2"></span><span class="var">out</span> << <span class="str">"</span>"</span>;<br/>
<span class="in2"></span><span class="keyword">break</span>;<br/>
<span class="in1"></span>}<br/>
<span class="macro">@end(<span class="name">special macro</span>)</span><br/>
</code></div>
<ul><li>
create a line break in the HTML output
</li><li>
the generated source code does not contain this line break
</li></ul>
</div>
<div class="page"><div class="slide"><div class="slide-nr">58</div>
<code>
<span class="macro">@add(<span class="name">special macro</span>)</span><br/>
<span class="in1"></span><span class="keyword">if</span> (<span class="var">name</span> == <span class="str">"priv"</span>) {<br/>
<span class="in2"></span><span class="fn">writeMacroClass</span>(<span class="var">out</span>, <span class="str">"var"</span>);<br/>
<span class="in2"></span><span class="var">out</span> << <span class="str">"@priv(<span>"</span>;<br/>
<span class="in2"></span><span class="fn">writeEscaped</span>(<span class="var">out</span>, <span class="var">arg</span>);<br/>
<span class="in2"></span><span class="var">out</span> << <span class="str">"</span>)</span>"</span>;<br/>
<span class="in2"></span><span class="keyword">break</span>;<br/>
<span class="in1"></span>}<br/>
<span class="macro">@end(<span class="name">special macro</span>)</span><br/>
</code></div>
<ul><li>
<code>@<span class="var">priv</span></code> commands are formatted specially in the HTML output
</li></ul>
</div>
<div class="page"><div class="slide"><div class="slide-nr">59</div>
<code>
<span class="macro">@add(<span class="name">special macro</span>)</span><br/>
<span class="in1"></span><span class="keyword">if</span> (<span class="var">name</span> == <span class="str">"magic"</span>) {<br/>
<span class="in2"></span><span class="fn">writeMacroClass</span>(<span class="var">out</span>, <span class="str">"num"</span>);<br/>
<span class="in2"></span><span class="var">out</span> << <span class="str">"@magic(<span>"</span>;<br/>
<span class="in2"></span><span class="fn">writeEscaped</span>(<span class="var">out</span>, <span class="var">arg</span>);<br/>
<span class="in2"></span><span class="var">out</span> << <span class="str">"</span>)</span>"</span>;<br/>
<span class="in2"></span><span class="keyword">break</span>;<br/>
<span class="in1"></span>}<br/>
<span class="macro">@end(<span class="name">special macro</span>)</span><br/>
</code></div>
<ul><li>
<code>@<span class="var">magic</span></code> commands are formatted specially in the HTML output
</li></ul>
</div>
<div class="page"><div class="slide"><div class="slide-nr">60</div>
<code>
<span class="macro">@Add(<span class="name">includes</span>)</span><br/>
<span class="in1"></span><span class="keyword">#include</span> <<span class="var">cctype</span>><br/>
<span class="macro">@end(<span class="name">includes</span>)</span><br/>
</code></div>
<ul><li>
needs <code><span class="type">std</span>::<span class="var">isalnum</span></code>
</li></ul>
</div>
<div class="page"><div class="slide"><div class="slide-nr">61</div>
<code>
<span class="macro">@add(<span class="name">process code ch</span>)</span><br/>
<span class="in1"></span><span class="type">auto</span> <span class="var">w</span> = <span class="var">begin</span>;<br/>
<span class="in1"></span><span class="macro">@put(<span class="name">find identifier end</span>)</span><br/>
<span class="in1"></span><span class="keyword">if</span> (<span class="var">w</span> != <span class="var">begin</span>) {<br/>
<span class="in2"></span><span class="macro">@put(<span class="name">process identifier</span>)</span><br/>
<span class="in2"></span><span class="keyword">continue</span>;<br/>
<span class="in1"></span>}<br/>
<span class="macro">@end(<span class="name">process code ch</span>)</span><br/>
</code></div>
<ul><li>
checks if at the current position is an identifier
</li></ul>
</div>
<div class="page"><div class="slide"><div class="slide-nr">62</div>
<code>
<span class="macro">@def(<span class="name">find identifier end</span>)</span><br/>
<span class="in1"></span><span class="keyword">while</span> (<span class="var">w</span> != <span class="var">end</span> && (<br/>
<span class="in2"></span><span class="type">std</span>::<span class="fn">isalnum</span>(*<span class="var">w</span>) || *<span class="var">w</span> == <span class="str">'_'</span> || *<span class="var">w</span> == <span class="str">'$'</span> || *<span class="var">w</span> == <span class="str">'#'</span><br/>
<span class="in1"></span>)) {<br/>
<span class="in2"></span>++<span class="var">w</span>;<br/>
<span class="in1"></span>}<br/>
<span class="macro">@end(<span class="name">find identifier end</span>)</span><br/>
</code></div>
<ul><li>
alphanumeric characters can form an identifier
</li><li>
also <code><span class="var">_</span></code>, <code><span class="var">$</span></code> and <code><span class="keyword">#</span></code> are valid parts of an identifier
</li></ul>
</div>
<div class="page"><div class="slide"><div class="slide-nr">63</div>
<code>
<span class="macro">@def(<span class="name">process identifier</span>)</span><br/>
<span class="in1"></span><span class="type">std</span>::<span class="type">string</span> <span class="var">ident</span> {<span class="var">begin</span>, <span class="var">w</span>};<br/>
<span class="in1"></span><span class="var">begin</span> = <span class="var">w</span> - <span class="num">1</span>;<br/>
<span class="in1"></span><span class="fn">process_ident</span>(<span class="var">out</span>, <span class="var">ident</span>, <span class="var">w</span> != <span class="var">end</span> ? *<span class="var">w</span> : <span class="str">' '</span>);<br/>
<span class="macro">@end(<span class="name">process identifier</span>)</span><br/>
</code></div>
<ul><li>
the new input is one before the end of the identifier
</li><li>
because the loop will increment it
</li></ul>
</div>
<div class="page"><div class="slide"><div class="slide-nr">64</div>
<code>
<span class="macro">@Add(<span class="name">includes</span>)</span><br/>
<span class="in1"></span><span class="keyword">#include</span> <<span class="var">set</span>><br/>
<span class="macro">@end(<span class="name">includes</span>)</span><br/>
</code></div>
<ul><li>
needs <code><span class="type">std</span>::<span class="var">set</span></code>
</li></ul>
</div>
<div class="page"><div class="slide"><div class="slide-nr">65</div>
<code>
<span class="macro">@add(<span class="name">process code helper</span>)</span><br/>
<span class="in1"></span><span class="keyword">using</span> <span class="type">Set</span> = <span class="type">std</span>::<span class="var">set</span><<span class="type">std</span>::<span class="type">string</span>>;<br/>
<span class="macro">@end(<span class="name">process code helper</span>)</span><br/>
</code></div>
<ul><li>
shorthand for the used <code><span class="type">std</span>::<span class="var">set</span></code>
</li></ul>
</div>
<div class="page"><div class="slide"><div class="slide-nr">66</div>
<code>
<span class="macro">@add(<span class="name">process code helper</span>)</span><br/>
<span class="in1"></span><span class="type">bool</span> <span class="fn">isKeyword</span>(<span class="type">const</span> <span class="type">std</span>::<span class="type">string</span> &<span class="var">s</span>) {<br/>