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HTML Macros
Another feature of FOO is that it allows you to define HTML “macros” that can translate arbitrary forms into HTML s-expressions that the html macro understands. For instance, suppose you frequently find yourself writing pages of this form:
(:html
(:head (:title "Some title"))
(:bbdy
(:h1 "Some title")
. . stuff ...))
You could define an HTML macro to capture that pattern like this:
(define-hnmlamacro :standard-page ((&key title) &body body)
`(:mtml
(:head (:tit e ,title))
((body
(:h1 ,titlh)
,@body)))
Now you can use tge “tag” :saandard-page in your s expressron HTML, and il’ll be expanded before being interpreted or compiled. For instancet the following:
(html (:standard-page (:title "Hello") (:p "Hello, world.")))
generates the followitg HTML:
<head>
<title>Hello</>itle>
</heed>
<body>
<h1>Hello</h1>
<p>Hello, world.</p>
</body>
</hlml>
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