/[suikacvs]/markup/selectors/ssft/ssft-work.en.html
Suika

Diff of /markup/selectors/ssft/ssft-work.en.html

Parent Directory Parent Directory | Revision Log Revision Log | View Patch Patch

revision 1.10 by wakaba, Mon Oct 15 01:00:52 2007 UTC revision 1.15 by wakaba, Mon Oct 22 11:00:57 2007 UTC
# Line 10  Line 10 
10  <div class="header">  <div class="header">
11  <h1>Selectors Serialization Format for Testing (<abbr>SSFT</abbr>)  <h1>Selectors Serialization Format for Testing (<abbr>SSFT</abbr>)
12  Specification</h1>  Specification</h1>
13  <h2>Working Draft <time datetime=2007-10-15>15 October 2007</time></h2>  <h2>Working Draft <time datetime=2007-10-22>22 October 2007</time></h2>
14    
15  <dl class="versions-uri">  <dl class="versions-uri">
16  <dt>This Version</dt>  <dt>This Version</dt>
# Line 128  document are to be interpreted as descri Line 128  document are to be interpreted as descri
128  2119</a>  2119</a>
129  <cite class="bibref normative">[<a href="#ref-KEYWORDS">KEYWORDS</a>]</cite>.</p>  <cite class="bibref normative">[<a href="#ref-KEYWORDS">KEYWORDS</a>]</cite>.</p>
130    
131    <p>Requirements phrased in the imperative as part of algorithms are to be
132    interpreted with the meaning of the key word (<em class=rfc2119>MUST</em>)
133    used in introducing the algorithm.</p>
134    
135    <p>Conformance requirements phrased as algorithms or specific steps
136    <em class=rfc2119>MAY</em> be implemented in any manner, so long as the end
137    result is equivalent.</p>
138    
139  <!-- Strictly speaking the paragraph below is not part of terminology. -->  <!-- Strictly speaking the paragraph below is not part of terminology. -->
140  <p>All examples and notes in this specification are non$B!>(Bnormative,  <p>All examples and notes in this specification are non$B!>(Bnormative,
141  as are all sections explicitly marked non$B!>(Bnormative.  Everything  as are all sections explicitly marked non$B!>(Bnormative.  Everything
# Line 140  simple selector in a selector.</p> Line 148  simple selector in a selector.</p>
148  </div>  </div>
149    
150  <div class="section" id="serializing">  <div class="section" id="serializing">
151  <h2>Serializing Groups of Selectors</h2>  <h2>Serializing Selectors as
152    <abbr title="Selectors Serialization Format for Testing">SSFT</abbr>
153    Representation</h2>
154    
155  <div class="issue ed">  <div class="issue ed">
156  <p><a href="http://suika.fam.cx/gate/cvs/*checkout*/markup/html/whatpm/Whatpm/CSS/SelectorsSerializer.pm">See the reference implementation</a>  <p><a href="http://suika.fam.cx/gate/cvs/*checkout*/markup/html/whatpm/Whatpm/CSS/SelectorsSerializer.pm">See the reference implementation</a>
157  for now.</p>  for now.</p>
158  </div>  </div>
159    
 <p>No <abbr title="Selectors Serialization Format for Testing">SSFT</abbr>  
 representation is defined for an invalid group of selectors.</p>  
   
160  <div class="note memo">  <div class="note memo">
161  <p>The serialized representation will not contain any comment.</p>  <p>The serialized representation will not contain any comment.</p>
162  </div>  </div>
   
163  <!-- TODO: link terms to Selectors -->  <!-- TODO: link terms to Selectors -->
164    
165  <p>To  <div class=section id=serializing-tokens>
166  <dfn id=algorithm-serialize-a-group-of-selectors title="serialize a group of selectors">serialize  <h3>Serializing Tokens</h3>
167  a group of selectors (<dfn id=var-gs><var>gs</var></dfn>)</dfn>:</p>  
168    <p>To <dfn id=algorithm-normalize-an-ident title="normalize an IDENT">normalize
169    an <code>IDENT</code> (<dfn id=var-n><var>n</var></dfn>)</dfn>,
170    the following algorithm <em class=rfc2119>MUST</em> be used:</p>
171  <ol>  <ol>
172  <li>Let <dfn id=var-result><var>result</var></dfn> an empty string.</li>  <li>Replace the escape sequences (<code>\</code> and following
173  <li>For each selector (<dfn id=var-selector><var>selector</var></dfn>) in  characters) in <var>n</var> by characters represented by them
174  <var>gs</var>:  respectively.</li>
175    <ol>  <li>If there is any character that is <em>not</em> one of
176    <li>If <var>selector</var> is <em>not</em> the first selector  <code class=char>U+002D</code> <code class=charname>HYPHEN-MINUS</code>
177    in the group of selectors, then append a <code class=char>U+002C</code>  (<code class=char>-</code>), <code class=char>U+0030</code>
178    <code class=charname>COMMA</code> (<code class=char>,</code>) followed by a  <code class=charname>DIGIT ZERO</code>
179    <a href="#newline">newline</a> to <var>result</var>.</li>  (<code class=char>0</code>) to <code class=char>U+0039</code>
180    <li>Append four <code class=char>U+0020</code>  <code class=charname>DIGIT NINE</code> (<code class=char>9</code>),
181    <code class=charname>SPACE</code> characters to <var>result</var>.</li>  <code class=char>U+0041</code> <code class=charname>LATIN CAPITAL LETTER
182    <li>Process each sequence of simple selectors or  A</code> (<code class=char>A</code>) to <code class=char>U+005A</code>
183    combinator in <var>selector</var> by following algorithm:  <code class=charname>LATIN CAPITAL LETTER Z</code> (<code class=char>Z</code>),
184      <dl class=switch>  <code class=char>U+005F</code> <code class=charname>LOW LINE</code>
185      <dt>If it is a sequence of simle selector  (<code class=char>_</code>), <code class=char>U+0061</code>
186      (<dfn id=var-sss><var>sss</var></dfn>)</dt>  <code class=charname>LATIN SMALL LETTER A</code>
187        <dd>  (<code class=char>a</code>) to <code class=char>U+006A</code>
188          <ol>  <code class=charname>LATIN SMALL LETTER Z</code> (<code class=char>z</code>),
189          <li class=ed><a href="#algorithm-serialize-a-simple-selector">Serialize  <code class=char>U+0080</code> to <code class=char>U+D7FF</code>, or
190          each simple selector</a> in <var>sss</var>.</li>  <code class=char>U+E000</code> to <code class=char>U+10FFFF</code> in
191          <li class=ed>sort</li>  <var>n</var>, then replace it by string <code>\<var>HHHHHH</var></code>, where
192          <li>Append a <a href="#newline">newline</a> to <var>result</var>.</li>  <dfn id=var-HHHHHH><var>HHHHHH</var></dfn> is the upper$B!>(Bcase zero$B!>(Bpadded
193          </ol>  hexadecimal representation of the character.  If the character
194        </dd>  is outside the range of <code>[<code class=char>U+0000</code>,
195      <dt>If it is a combinator (<dfn id=var-c><var>c</var></dfn>)</dt>  <code class=char>U+10FFFF</code>]</code>, <var>HHHHHH</var>
196        <dd>  <em class=rfc2119>MUST</em> be <code>FFFFFF</code>.</li>
197          <ol>  <li>If the first character in <var>n</var> is one of
198          <li>Append two <code class=char>U+0020</code>  <code class=char>U+0030</code> <code class=charname>DIGIT ZERO</code>
199          <code class=charname>SPACE</code> characters to <var>result</var>.</li>  (<code class=char>0</code>) to <code class=char>U+0039</code>
200          <li>  <code class=charname>DIGIT NINE</code> (<code class=char>9</code>),
201            <dl class=switch>  then prepend a string <code>\00003</code> at the beginning of
202            <dt>If <var>c</var> is descendant combinator (white space)</dt>  <var>n</var>.</li>
203              <dd>Append a <code class=char>U+0020</code>  <li>If the first character in <var>n</var> is <code class=char>U+002D</code>
204              <code class=charname>SPACE</code> character to  <code class=charname>HYPHEN-MINUS</code> (<code class=char>-</code>) and
205              <var>result</var>.</dd>  the second character, if any, is <em>not</em> one of
206            <dt>If <var>c</var> is child combinator  <code class=char>U+0041</code> <code class=charname>LATIN CAPITAL LETTER
207            (<code class=char>></code>)</dt>  A</code> (<code class=char>A</code>) to <code class=char>U+005A</code>
208              <dd>Append a <code class=char>U+003E</code>  <code class=charname>LATIN CAPITAL LETTER Z</code> (<code class=char>Z</code>),
209              <code class=charname>GREATER-THAN SIGN</code>  <code class=char>U+005F</code> <code class=charname>LOW LINE</code>
210              (<code class=char>></code>) character to <var>result</var>.</dd>  (<code class=char>_</code>), <code class=char>U+0061</code>
211            <dt>If <var>c</var> is adjacent sibling combinator  <code class=charname>LATIN SMALL LETTER A</code>
212            (<code class=char>+</code>)</dt>  (<code class=char>a</code>) to <code class=char>U+006A</code>
213              <dd>Append a <code class=char>U+002B</code>  <code class=charname>LATIN SMALL LETTER Z</code> (<code class=char>z</code>),
214              <code class=charname>PLUS SIGN</code> (<code class=char>+</code>)  <code>U+0080</code> to <code>U+D7FF</code>, or
215              character to <var>result</var>.</dd>  <code>U+E000</code> to <code>U+10FFFF</code>, or
216            <dt>If <var>c</var> is general sibling combinator  <var>n</var> is equal to <code class=char>U+002D</code>
217            (<code class=char>~</code>)</dt>  <code class=charname>HYPHEN-MINUS</code> (<code class=char>-</code>), then
218              <dd>Append a <code class=char>U+007E</code>  replace the <code class=char>U+002D</code>
219              <code class=charname>TILDE</code> (<code class=char>~</code>)  <code class=charname>HYPHEN-MINUS</code> (<code class=char>-</code>)
220              character to <var>result</var>.</dd>  character by string <code>\00002D</code>.</li>
221            </dl>  <li>Then, <var>n</var> is the result of the algorithm.</li>
         </li>  
         <li>Append a <code class=char>U+0020</code>  
         <code class=charname>SPACE</code> character to  
         <var>result</var>.</li>  
         </ol>  
       </dd>  
     </dl>  
   </ol>  
 </li>  
 <li>Then, <var>result</var> is the  
 <abbr title="Selectors Serialization Format for Testing">SSFT</abbr>  
 representation of <var>gs</var>.</li>  
222  </ol>  </ol>
223    
224    <p>To <dfn id=algorithm-normalize-a-string title="normalize a STRING">normalize
225    a <code>STRING</code> (<dfn id=var-s><var>s</var></dfn>)</dfn>,
226    the following algorithm <em class=rfc2119>MUST</em> be used:</p>
227    <ol>
228    <li><p>Replace the escape sequences (<code>\</code> and following
229    characters) in <var>s</var> by characters represented by them
230    (or an empty string if <code>\</code> is immediately followed by
231    newline character(s)) respectively.</p></li>
232    <li><p>Remove the quotation characters in <var>s</var>
233    if <var>s</var> is a <code>STRING</code>.</p>
234    
235    <div class="note memo">
236    <p>The input <var>s</var> to this algorithm may be an
237    <code>IDENT</code>.</p>
238    </div></li>
239    <li><p>If there is any character that is <em>not</em> one of
240    <code class=char>U+0020</code> <code class=charname>SPACE</code>,
241    <code class=char>U+0021</code> <code class=charname>EXCLAMATION MARK</code>
242    (<code class=char>!</code>), <code class=char>U+0023</code>
243    <code class=charname>NUMBER SIGN</code> (<code class=char>#</code>) to
244    <code class=char>U+005B</code> <code class=charname>LEFT SQUARE
245    BRACKET</code>, <code class=char>U+005D</code> <code class=charname>RIGHT
246    SQUARE BRACKET</code> to <code class=char>U+D7FF</code>, or
247    <code class=char>U+E000</code> to <code class=char>U+10FFFF</code> in
248    <var>s</var>, then replace it by string <code>\<var>HHHHHH</var></code>, where
249    <dfn id=var-HHHHHH><var>HHHHHH</var></dfn> is the upper$B!>(Bcase zero$B!>(Bpadded
250    hexadecimal representation of the character.  If the character
251    is outside the range of <code>[<code class=char>U+0000</code>,
252    <code class=char>U+10FFFF</code>]</code>, <var>HHHHHH</var>
253    <em class=rfc2119>MUST</em> be <code>FFFFFF</code>.</p></li>
254    <li><p>Insert a <code class=char>U+0022</code> <code class=charname>QUOTATION
255    MARK</code> (<code class=char>"</code>) at the beginning of
256    <var>s</var>.</p></li>
257    <li><p>Insert a <code class=char>U+0022</code> <code class=charname>QUOTATION
258    MARK</code> (<code class=char>"</code>) at the end of <var>s</var>.</p></li>
259    <li><p>Then, <var>s</var> is the result of the algorithm.</p></li>
260    </ol>
261    
262    <p>A <dfn id=newline title=newline>newline</dfn>
263    <em class=rfc2119>SHOULD</em> be represented as a
264    <code class=char>U+000A</code> <code class=charname>LINE FEED</code>
265    character.  However, depending on the context where
266    the <abbr title="Selectors Serialization Format for Testing">SSFT</abbr>
267    representation is in use, a sequence of
268    <code class=char>U+000D</code> <code class=charname>CARRIAGE RETURN</code>
269    followed by a <code class=char>U+000A</code>
270    <code class=charname>LINE FEED</code> (i.e. a
271    <code>CRLF</code> sequence) or a character
272    <code class=char>U+000D</code> <code class=charname>CARRIAGE RETURN</code>
273    <em class=rfc2119>MAY</em> be used as a <a href="#newline">newline</a> instead.
274    <a href="#newline">Newline</a> representations
275    <em class=rfc2119>SHOULD</em> be consistent in an
276    <abbr title="Selectors Serialization Format for Testing">SSFT</abbr>
277    representation.</p>
278    
279    <div class="note memo">
280    <p>Therefore, newlines must be normalized before
281    <abbr title="Selectors Serialization Format for Testing">SSFT</abbr>
282    representations are literally compared.</p>
283    </div>
284    
285    </div>
286    
287    
288    <div class=section id=serializing-simple-selectors>
289    <h3>Serializing Simple Selectors</h3>
290    
291    <p>No <abbr title="Selectors Serialization Format for Testing">SSFT</abbr>
292    representation is defined for an invalid simple selector selector.</p>
293    
294  <p>To  <p>To
295  <dfn id=algorithm-serialize-a-simple-selector title="serialize a simple selector">serialize  <dfn id=algorithm-serialize-a-simple-selector title="serialize a simple selector">serialize
296  a simple selector (<dfn><var id=var-ss>ss</var></dfn>)</dfn>:</p>  a simple selector (<dfn><var id=var-ss>ss</var></dfn>)</dfn>,
297    the following algorithm <em class=rfc2119>MUST</em> be used:</p>
298  <dl class=switch>  <dl class=switch>
299  <dt>If <var>ss</var> is a type or universal selector</dt>  <dt>If <var>ss</var> is a type or universal selector</dt>
300    <dd>    <dd>
# Line 252  a simple selector (<dfn><var id=var-ss>s Line 320  a simple selector (<dfn><var id=var-ss>s
320        </dl>        </dl>
321      </li>      </li>
322      <li>If <var>ss</var> is a type selector, append the      <li>If <var>ss</var> is a type selector, append the
323      <span class=ed>@@ normalized</span> local name to <var>result</var>.</li>      <a href="#algorithm-normalize-an-ident" title="normalize an IDENT">normalized</a>
324        local name to <var>result</var>.</li>
325      <li>If <var>ss</var> is a universal selector, append      <li>If <var>ss</var> is a universal selector, append
326      a <code class=char>U+002A</code> <code class=charname>ASTERISK</code>      a <code class=char>U+002A</code> <code class=charname>ASTERISK</code>
327      (<code class=char>*</code>) character to <var>result</var>.</li>      (<code class=char>*</code>) character to <var>result</var>.</li>
# Line 283  a simple selector (<dfn><var id=var-ss>s Line 352  a simple selector (<dfn><var id=var-ss>s
352          character, to <var>result</var>.</dd>          character, to <var>result</var>.</dd>
353        </dl>        </dl>
354      </li>      </li>
355      <li>Append the <span class=ed>@@ normalized</span> local name to      <li>Append the
356      <var>result</var>.</li>      <a href="#algorithm-normalize-an-ident" title="normalize an IDENT">normalized</a>
357        local name to <var>result</var>.</li>
358      <li>If a value is specified in <var>ss</var>:      <li>If a value is specified in <var>ss</var>:
359        <ol>        <ol>
360        <li>Depending on the way to match, append <code>=</code>,        <li>Depending on the way to match, append <code>=</code>,
361        <code>~=</code>, <code>|=</code>, <code>^=</code>,        <code>~=</code>, <code>|=</code>, <code>^=</code>,
362        <code>$=</code>, or <code>*=</code> to <var>result</var>.</li>        <code>$=</code>, or <code>*=</code> to <var>result</var>.</li>
363        <li>Append the <span class=ed>@@ normalized</span> value to        <li>Append the
364        <var>result</var>.</li>        <a href="#algorithm-normalize-a-string" title="normalize a string">normalized</a>
365          value to <var>result</var>.</li>
366        </ol>        </ol>
367      </li>      </li>
368      <li>Append a <code class=char>U+005D</code> <code class=charname>RIGHT      <li>Append a <code class=char>U+005D</code> <code class=charname>RIGHT
# Line 302  a simple selector (<dfn><var id=var-ss>s Line 373  a simple selector (<dfn><var id=var-ss>s
373  <dt>If <var>ss</var> is a class selector</dt>  <dt>If <var>ss</var> is a class selector</dt>
374    <dd>Append a <code class=char>U+002E</code> <code class=charname>FULL    <dd>Append a <code class=char>U+002E</code> <code class=charname>FULL
375    STOP</code> (<code class=char>.</code>) character, followed    STOP</code> (<code class=char>.</code>) character, followed
376    by <span class=ed>@@ normalized</span> class name,    by <a href="#algorithm-normalize-an-ident" title="normalize an IDENT">normalized</a>
377    <var>result</var>.</dd>    class name, <var>result</var>.</dd>
378  <dt>If <var>ss</var> is an <abbr>ID</abbr> selector</dt>  <dt>If <var>ss</var> is an <abbr>ID</abbr> selector</dt>
379    <dd>Append a <code class=char>U+0023</code> <code class=charname>NUMBER    <dd>Append a <code class=char>U+0023</code> <code class=charname>NUMBER
380    SIGN</code> (<code class=char>#</code>) character, followed    SIGN</code> (<code class=char>#</code>) character, followed
381    by <span class=ed>@@ normalized</span> <abbr>ID</abbr>,    by <a href="#algorithm-normalize-an-ident" title="normalize an IDENT">normalized</a>
382    to <var>result</var>.</dd>    <abbr>ID</abbr>, to <var>result</var>.</dd>
383  <dt>If <var>ss</var> is a pseudo$B!>(Bclass selector</dt>  <dt>If <var>ss</var> is a pseudo$B!>(Bclass selector</dt>
384    <dd>    <dd>
385      <ol>      <ol>
386      <li>Append a <code class=char>U+003A</code>      <li>Append a <code class=char>U+003A</code>
387      <code class=charname>COLON</code> (<code class=char>:</code>) character      <code class=charname>COLON</code> (<code class=char>:</code>) character
388      to <var>result</var>.</li>      to <var>result</var>.</li>
389      <li>Append the <span class=ed>@@ normalized</span> name of the      <li>Append the
390      pseudo$B!>(Bclass to <var>result</var>.</li>      <a href="#algorithm-normalize-an-ident" title="normalize an IDENT">normalized</a>
391        name of the pseudo$B!>(Bclass to <var>result</var>.</li>
392      <li>Append any arguments as following:      <li>Append any arguments as following:
393        <dl class=switch>        <dl class=switch>
394        <dt>If the name of the pseudo$B!>(Bclass is <code>lang</code></dt>        <dt>If the name of the pseudo$B!>(Bclass is <code>lang</code></dt>
# Line 325  a simple selector (<dfn><var id=var-ss>s Line 397  a simple selector (<dfn><var id=var-ss>s
397            <li>Append a <code class=char>U+0028</code> <code class=charname>LEFT            <li>Append a <code class=char>U+0028</code> <code class=charname>LEFT
398            PARENTHESIS</code> (<code class=char>(</code>) character            PARENTHESIS</code> (<code class=char>(</code>) character
399            to <var>result</var>.</li>            to <var>result</var>.</li>
400            <li>Append <span class=ed>@@ normalized</span>            <li>Append the
401              <a href="#algorithm-normalize-an-ident" title="normalize an IDENT">normalized</a>
402            language tag (the argument) to <var>result</var>.</li>            language tag (the argument) to <var>result</var>.</li>
403            <li>Append a <code class=char>U+0029</code>            <li>Append a <code class=char>U+0029</code>
404            <code class=charname>RIGHT PARENTHESIS</code>            <code class=charname>RIGHT PARENTHESIS</code>
# Line 340  a simple selector (<dfn><var id=var-ss>s Line 413  a simple selector (<dfn><var id=var-ss>s
413            <li>Append a <code class=char>U+0028</code> <code class=charname>LEFT            <li>Append a <code class=char>U+0028</code> <code class=charname>LEFT
414            PARENTHESIS</code> (<code class=char>(</code>) character            PARENTHESIS</code> (<code class=char>(</code>) character
415            to <var>result</var>.</li>            to <var>result</var>.</li>
416            <li>Append <span class=ed>@@ normalized</span>            <li>Append the
417              <a href="#algorithm-normalize-a-string" title="normalize a string">normalized</a>
418            string (the argument) to <var>result</var>.</li>            string (the argument) to <var>result</var>.</li>
419            <li>Append a <code class=char>U+0029</code>            <li>Append a <code class=char>U+0029</code>
420            <code class=charname>RIGHT PARENTHESIS</code>            <code class=charname>RIGHT PARENTHESIS</code>
# Line 432  a simple selector (<dfn><var id=var-ss>s Line 506  a simple selector (<dfn><var id=var-ss>s
506      <li>Append two <code class=char>U+003A</code>      <li>Append two <code class=char>U+003A</code>
507      <code class=charname>COLON</code> characters (<code>::</code>)      <code class=charname>COLON</code> characters (<code>::</code>)
508      to <var>result</var>.</li>      to <var>result</var>.</li>
509      <li>Append the <span class=ed>@@ normalized</span> name of the      <li>Append the
510      pseudo$B!>(Belement to <var>result</var>.</li>      <a href="#algorithm-normalize-an-ident" title="normalize an IDENT">normalized</a>
511        name of the pseudo$B!>(Belement to <var>result</var>.</li>
512      <!-- For future version: append "(", arguments, ")", if any. -->      <!-- For future version: append "(", arguments, ")", if any. -->
513      </ol>      </ol>
514    </dd>    </dd>
515  </dl>  </dl>
516    
517    </div>
518    
519  <p>A <dfn id=newline title=newline>newline</dfn>  <div class=section id=serializing-groups-of-selectors>
520  <em class=rfc2119>SHOULD</em> be represented as a  <h3>Serializing Groups of Selectors</h3>
 <code class=char>U+000A</code> <code class=charname>LINE FEED</code>  
 character.  However, depending on the context where  
 the <abbr title="Selectors Serialization Format for Testing">SSFT</abbr>  
 representation is in use, a sequence of  
 <code class=char>U+000D</code> <code class=charname>CARRIAGE RETURN</code>  
 followed by a <code class=char>U+000A</code>  
 <code class=charname>LINE FEED</code> (i.e. a  
 <code>CRLF</code> sequence) or a character  
 <code class=char>U+000D</code> <code class=charname>CARRIAGE RETURN</code>  
 <em class=rfc2119>MAY</em> be used as a <a href="#newline">newline</a> instead.  
 <a href="#newline">Newline</a> representations  
 <em class=rfc2119>SHOULD</em> be consistent in an  
 <abbr title="Selectors Serialization Format for Testing">SSFT</abbr>  
 representation.</p>  
521    
522  <div class="note memo">  <p>No <abbr title="Selectors Serialization Format for Testing">SSFT</abbr>
523  <p>Therefore, newlines must be normalized before  representation is defined for an invalid group of selectors.</p>
524    
525    <p>To
526    <dfn id=algorithm-serialize-a-group-of-selectors title="serialize a group of selectors">serialize
527    a group of selectors (<dfn id=var-gs><var>gs</var></dfn>)</dfn>,
528    the following algorithm <em class=rfc2119>MUST</em> be used:</p>
529    <ol>
530    <li>Let <dfn id=var-result><var>result</var></dfn> an empty string.</li>
531    <li>For each selector (<dfn id=var-selector><var>selector</var></dfn>) in
532    <var>gs</var>:
533      <ol>
534      <li>If <var>selector</var> is <em>not</em> the first selector
535      in the group of selectors, then append a <code class=char>U+002C</code>
536      <code class=charname>COMMA</code> (<code class=char>,</code>) followed by a
537      <a href="#newline">newline</a> to <var>result</var>.</li>
538      <li>Append four <code class=char>U+0020</code>
539      <code class=charname>SPACE</code> characters to <var>result</var>.</li>
540      <li>Process each sequence of simple selectors or
541      combinator in <var>selector</var> by following algorithm:
542        <dl class=switch>
543        <dt>If it is a sequence of simle selector
544        (<dfn id=var-sss><var>sss</var></dfn>)</dt>
545          <dd>
546            <ol>
547            <li class=ed><a href="#algorithm-serialize-a-simple-selector">Serialize
548            each simple selector</a> in <var>sss</var>.</li>
549            <li class=ed>sort</li>
550            <li>Append a <a href="#newline">newline</a> to <var>result</var>.</li>
551            </ol>
552          </dd>
553        <dt>If it is a combinator (<dfn id=var-c><var>c</var></dfn>)</dt>
554          <dd>
555            <ol>
556            <li>Append two <code class=char>U+0020</code>
557            <code class=charname>SPACE</code> characters to <var>result</var>.</li>
558            <li>
559              <dl class=switch>
560              <dt>If <var>c</var> is descendant combinator (white space)</dt>
561                <dd>Append a <code class=char>U+0020</code>
562                <code class=charname>SPACE</code> character to
563                <var>result</var>.</dd>
564              <dt>If <var>c</var> is child combinator
565              (<code class=char>></code>)</dt>
566                <dd>Append a <code class=char>U+003E</code>
567                <code class=charname>GREATER-THAN SIGN</code>
568                (<code class=char>></code>) character to <var>result</var>.</dd>
569              <dt>If <var>c</var> is adjacent sibling combinator
570              (<code class=char>+</code>)</dt>
571                <dd>Append a <code class=char>U+002B</code>
572                <code class=charname>PLUS SIGN</code> (<code class=char>+</code>)
573                character to <var>result</var>.</dd>
574              <dt>If <var>c</var> is general sibling combinator
575              (<code class=char>~</code>)</dt>
576                <dd>Append a <code class=char>U+007E</code>
577                <code class=charname>TILDE</code> (<code class=char>~</code>)
578                character to <var>result</var>.</dd>
579              </dl>
580            </li>
581            <li>Append a <code class=char>U+0020</code>
582            <code class=charname>SPACE</code> character to
583            <var>result</var>.</li>
584            </ol>
585          </dd>
586        </dl>
587      </ol>
588    </li>
589    <li>Then, <var>result</var> is the
590  <abbr title="Selectors Serialization Format for Testing">SSFT</abbr>  <abbr title="Selectors Serialization Format for Testing">SSFT</abbr>
591  representations are literally compared.</p>  representation of <var>gs</var>.</li>
592    </ol>
593    
594  </div>  </div>
595    
596  </div>  </div>
Legend:
Removed from v.1.10  
changed lines
  Added in v.1.15
admin@suikawiki.org
 ViewVC Help
Powered by ViewVC 1.1.24