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scss
Description
An implementation of the s-expression based CSS notation SCSS. It slightly modifies and extends the original implementation of the WebIt! (site seems defunct) framework.
Author
Documentation
Only the emitter side is implemented at the moment.
Syntax
stylesheet ::= (css <import-clause>* <rule>+) import-clause ::= (import <string>) rule ::= (<complex-selector> <declaration>+) complex-selector ::= <single-selector> | <grouping-selector> simple-selector ::= <symbol> | (= class <symbol>) | (= class <simple-selector> <symbol>) | (= pclass <symbol>) | (= pclass <simple-selector> <symbol>) | (= id <symbol>) | (= id <simple-selector> <symbol>) path-selector ::= (<combinator> <single-selector>+) combinator ::= // | + | > single-selector ::= <simple-selector> | <path-selector> grouping-selector ::= (<single-selector>+) declaration ::= (<symbol> <scheme-expression>) | (! (<symbol> <scheme-expression>))
Alternatively the following extended syntax dubbed SCSS Plus is available:
stylesheet ::= (css+ <import-clause>* <rule>+) import-clause ::= (import <string>) rule ::= (<complex-selector> [<declaration> | <nested-rule>]+) nested-rule ::= (<path-selector> [<declaration> | <nested-rule>]+) complex-selector ::= <single-selector> | <grouping-selector> simple-selector ::= <symbol> | (= class <symbol>) | (= class <simple-selector> <symbol>) | (= pclass <symbol>) | (= pclass <simple-selector> <symbol>) | (= id <symbol>) | (= id <simple-selector> <symbol>) path-selector ::= (<combinator> <single-selector>+) combinator ::= // | + | > | & single-selector ::= <simple-selector> | <path-selector> grouping-selector ::= (<single-selector>+) declaration ::= (<symbol> <scheme-expression>) | (! (<symbol> <scheme-expression>))
The two differences are that you can nest rules which results in much more compact stylesheets as well as use the & combinator which will concatenate nested selectors.
Emitter
[procedure] (scss->css scss [port])Write the CSS translation of scss (which is a list following the syntax described under Syntax) to port.
Examples
Basic
(scss->css '(css (p (text-align center))))
=>
p { text-align: center }
More Complex
(scss->css '(css (((= class p note) (+ p p))
(font-style italic)
(background-color "#ccc"))
(|#content|
(width 100em))))
=>
p.note, p + p { font-style: italic; background-color: #ccc } #content { width: 100em }
SCSS Plus
(scss->css '(css+ ((= id main)
(display block)
((// p)
(font-size 1em)
((& .error)
(! (color red)))))))
=>
#main { display: block } #main p { font-size: 1em } #main p.error { color: red !important }
License
Copyright (c) 2010, Moritz Heidkamp All rights reserved. Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met: 1. Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer. 2. Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution. 3. Neither the name of the <organization> nor the names of its contributors may be used to endorse or promote products derived from this software without specific prior written permission. THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL <COPYRIGHT HOLDER> BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.