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example.html
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example.html
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<!DOCTYPE html>
<style>
body {
background-color: hsl(30,20%, 95%);
}
h1 {
font-family: sans-serif;
font-size: 1em;
}
div svg.railroad-diagram {
width: 80%; /* Scale to the width of the parent */
height: 100%; /* Preserve the ratio. Could be related to https://bugs.webkit.org/show_bug.cgi?id=82489 */
}
</style>
<link rel='stylesheet' href='railroad-diagrams.css'>
<script src='railroad-diagrams.js'></script>
<body>
<h1 id='ident'>IDENT</h1>
<div>
<script >
Diagram(
Choice(0, Skip(), '-'),
Choice(0, NonTerminal('name-start char'), NonTerminal('escape')),
ZeroOrMore(
Choice(0, NonTerminal('name char'), NonTerminal('escape')))).addTo();
</script>
</div>
<h1 id='function'>FUNCTION</h1>
<script>
Diagram(NonTerminal('IDENT'), '(').addTo();
</script>
<h1 id='at-keyword'>AT-KEYWORD</h1>
<script>
Diagram('@', NonTerminal('IDENT')).addTo();
</script>
<h1 id='hash'>HASH</h1>
<script>
Diagram('#', NonTerminal('IDENT')).addTo();
</script>
<h1 id='string'>STRING</h1>
<script>
Diagram(
Choice(0,
Sequence(
'"',
ZeroOrMore(
Choice(0,
NonTerminal('not " or \\'),
NonTerminal('escape'))),
'"'),
Sequence(
"'",
ZeroOrMore(
Choice(0,
NonTerminal("not ' or \\"),
NonTerminal('escape'))),
"'"))).addTo();
</script>
<h1 id='url'>URL</h1>
<script>
Diagram(
Choice(0, 'u', 'U'),
Choice(0, 'r', 'R'),
Choice(0, 'l', 'L'),
'(',
Choice(1,
Optional(NonTerminal('WS')),
Sequence(
Optional(NonTerminal('WS')),
NonTerminal('STRING'),
Optional(NonTerminal('WS'))),
Sequence(
Optional(NonTerminal('WS')),
OneOrMore(
Choice(0,
NonTerminal('not " \' ( ) WS or NPC'),
NonTerminal('escape'))),
Optional(NonTerminal('WS')))),
')').addTo();
</script>
<h1>NUMBER</h1>
<script>
Diagram(
Choice(1, '+', Skip(), '-'),
Choice(0,
Sequence(
OneOrMore(NonTerminal('digit')),
'.',
OneOrMore(NonTerminal('digit'))),
OneOrMore(NonTerminal('digit')),
Sequence(
'.',
OneOrMore(NonTerminal('digit')))),
Choice(0,
Skip(),
Sequence(
Choice(0, 'e', 'E'),
Choice(1, '+', Skip(), '-'),
OneOrMore(NonTerminal('digit'))))).addTo();
</script>
<h1>DIMENSION</h1>
<script>
Diagram(NonTerminal('NUMBER'), NonTerminal('IDENT')).addTo();
</script>
<h1>PERCENTAGE</h1>
<script>
Diagram(NonTerminal('NUMBER'), '%').addTo();
</script>
<h1>UNICODE-RANGE</h1>
<script>
Diagram(
Choice(0,
'U',
'u'),
'+',
Choice(0,
Sequence(OneOrMore(NonTerminal('hex digit'), Comment('1-6 times'))),
Sequence(
ZeroOrMore(NonTerminal('hex digit'), Comment('1-5 times')),
OneOrMore('?', Comment('1 to (6 - digits) times'))),
Sequence(
OneOrMore(NonTerminal('hex digit'), Comment('1-6 times')),
'-',
OneOrMore(NonTerminal('hex digit'), Comment('1-6 times'))))).addTo();
</script>
<h1>COMMENT</h1>
<script>
Diagram(
'/*',
ZeroOrMore(
NonTerminal("anything but * followed by /")),
'*/').addTo();
</script>
<h1>CDO</h1>
<script>
Diagram("<" + "!--").addTo();
</script>
<h1>CDC</h1>
<script>
Diagram("-->").addTo();
</script>