/[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 1.8 by wakaba, Mon Oct 15 00:32:05 2007 UTC revision 1.17 by wakaba, Mon Oct 22 11:33:15 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 63  available at <code class="URI">&lt;<a Line 63  available at <code class="URI">&lt;<a
63  at the time of its publication.  Other documents  at the time of its publication.  Other documents
64  might supersede this document.</em></p>  might supersede this document.</em></p>
65    
66  <p>This document is a working draft, produced as part  <p>This document is a working draft, produced as part of the
67    <a href="http://suika.fam.cx/www/markup/html/whatpm/readme">Whatpm</a>
68    subproject
69  of the <a href="http://suika.fam.cx/www/manakai-core/doc/web/">manakai</a>  of the <a href="http://suika.fam.cx/www/manakai-core/doc/web/">manakai</a>
70  project.  It might be updated, replaced, or obsoleted by  project.  It might be updated, replaced, or obsoleted by
71  other documents at any time.  It is inappropriate to  other documents at any time.  It is inappropriate to
# Line 116  in not escaping unsafe identifiers.</p> Line 118  in not escaping unsafe identifiers.</p>
118  <div class="section" id="terminology">  <div class="section" id="terminology">
119  <h2>Terminology</h2>  <h2>Terminology</h2>
120    
121  <p>The key words <q><em class="rfc2119">MUST</em></q>,  <p>The key words <q><dfn id=must><em class="rfc2119">MUST</em></dfn></q>,
122  <q><em class="rfc2119">MUST NOT</em></q>,  <q><dfn id=must-not><em class="rfc2119">MUST NOT</em></dfn></q>,
123  <q><em class="rfc2119">SHOULD</em></q>,  <q><dfn id=should><em class="rfc2119">SHOULD</em></dfn></q>,
124  <q><em class="rfc2119">SHOULD NOT</em></q>, and  <q><dfn id=should-not><em class="rfc2119">SHOULD NOT</em></dfn></q>, and
125  <q><em class=rfc2119>MAY</em></q> in this  <q><dfn id=may><em class=rfc2119>MAY</em></dfn></q> in this
126  document are to be interpreted as described in  document are to be interpreted as described in
127  <a href="urn:ietf:rfc:2119"><abbr title="Request for Comments">RFC</abbr>  <a href="urn:ietf:rfc:2119"><abbr title="Request for Comments">RFC</abbr>
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 138  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 in
152    <abbr title="Selectors Serialization Format for Testing">SSFT</abbr>
153    Representation</h2>
154    
155    <p>Subsections of this section define algorithms
156    to <a href="#algorithm-serialize-a-simple-selector">serialize a simple
157    selector</a> or <a href="#algorithm-serialize-a-group-of-selectors">serialize
158    a group of selectors</a>.</p>
159    
160  <div class="issue ed">  <div class="issue ed">
161  <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
162  for now.</p>  also the reference implementation</a> for now.</p>
163  </div>  </div>
164    
 <p>No <abbr title="Selectors Serialization Format for Testing">SSFT</abbr>  
 representation is defined for an invalid group of selectors.</p>  
   
165  <div class="note memo">  <div class="note memo">
166  <p>The serialized representation will not contain any comment.</p>  <p>The serialized representation will not contain any comment.</p>
167  </div>  </div>
   
168  <!-- TODO: link terms to Selectors -->  <!-- TODO: link terms to Selectors -->
169    
170  <p>To  <div class=section id=serializing-tokens>
171  <dfn id=algorithm-serialize-a-group-of-selectors title="serialize a group of selectors">serialize  <h3>Serializing Tokens</h3>
172  a group of selectors (<dfn id=var-gs><var>gs</var></dfn>)</dfn>:</p>  
173    <p>To <dfn id=algorithm-normalize-an-ident title="normalize an IDENT">normalize
174    an <code>IDENT</code> (<dfn id=var-n><var>n</var></dfn>)</dfn>,
175    the following algorithm <em class=rfc2119>MUST</em> be used:</p>
176  <ol>  <ol>
177  <li>Let <dfn id=var-result><var>result</var></dfn> an empty string.</li>  <li>Replace the escape sequences (<code>\</code> and following
178  <li>For each selector (<dfn id=var-selector><var>selector</var></dfn>) in  characters) in <var>n</var> by characters represented by them
179  <var>gs</var>:  respectively.</li>
180    <ol>  <li>If there is any character that is <em>not</em> one of
181    <li>If <var>selector</var> is <em>not</em> the first selector  <code class=char>U+002D</code> <code class=charname>HYPHEN-MINUS</code>
182    in the group of selectors, then append a <code class=char>U+002C</code>  (<code class=char>-</code>), <code class=char>U+0030</code>
183    <code class=charname>COMMA</code> (<code class=char>,</code>) followed by a  <code class=charname>DIGIT ZERO</code>
184    <a href="#newline">newline</a> to <var>result</var>.</li>  (<code class=char>0</code>) to <code class=char>U+0039</code>
185    <li>Append four <code class=char>U+0020</code>  <code class=charname>DIGIT NINE</code> (<code class=char>9</code>),
186    <code class=charname>SPACE</code> characters to <var>result</var>.</li>  <code class=char>U+0041</code> <code class=charname>LATIN CAPITAL LETTER
187    <li>Process each sequence of simple selectors or  A</code> (<code class=char>A</code>) to <code class=char>U+005A</code>
188    combinator in <var>selector</var> by following algorithm:  <code class=charname>LATIN CAPITAL LETTER Z</code> (<code class=char>Z</code>),
189      <dl class=switch>  <code class=char>U+005F</code> <code class=charname>LOW LINE</code>
190      <dt>If it is a sequence of simle selector  (<code class=char>_</code>), <code class=char>U+0061</code>
191      (<dfn id=var-sss><var>sss</var></dfn>)</dt>  <code class=charname>LATIN SMALL LETTER A</code>
192        <dd class=ed>@@</dd>  (<code class=char>a</code>) to <code class=char>U+006A</code>
193      <dt>If it is a combinator (<dfn id=var-c><var>c</var></dfn>)</dt>  <code class=charname>LATIN SMALL LETTER Z</code> (<code class=char>z</code>),
194        <dd>  <code class=char>U+0080</code> to <code class=char>U+D7FF</code>, or
195          <ol>  <code class=char>U+E000</code> to <code class=char>U+10FFFF</code> in
196          <li>Append two <code class=char>U+0020</code>  <var>n</var>, then replace it by string <code>\<var>HHHHHH</var></code>, where
197          <code class=charname>SPACE</code> characters to <var>result</var>.</li>  <dfn id=var-HHHHHH><var>HHHHHH</var></dfn> is the upper$B!>(Bcase zero$B!>(Bpadded
198          <li>  hexadecimal representation of the character.  If the character
199            <dl class=switch>  is outside the range of <code>[<code class=char>U+0000</code>,
200            <dt>If <var>c</var> is descendant combinator (white space)</dt>  <code class=char>U+10FFFF</code>]</code>, <var>HHHHHH</var>
201              <dd>Append a <code class=char>U+0020</code>  <em class=rfc2119>MUST</em> be <code>FFFFFF</code>.</li>
202              <code class=charname>SPACE</code> character to  <li>If the first character in <var>n</var> is one of
203              <var>result</var>.</dd>  <code class=char>U+0030</code> <code class=charname>DIGIT ZERO</code>
204            <dt>If <var>c</var> is child combinator  (<code class=char>0</code>) to <code class=char>U+0039</code>
205            (<code class=char>></code>)</dt>  <code class=charname>DIGIT NINE</code> (<code class=char>9</code>),
206              <dd>Append a <code class=char>U+003E</code>  then prepend a string <code>\00003</code> at the beginning of
207              <code class=charname>GREATER-THAN SIGN</code>  <var>n</var>.</li>
208              (<code class=char>></code>) character to <var>result</var>.</dd>  <li>If the first character in <var>n</var> is <code class=char>U+002D</code>
209            <dt>If <var>c</var> is adjacent sibling combinator  <code class=charname>HYPHEN-MINUS</code> (<code class=char>-</code>) and
210            (<code class=char>+</code>)</dt>  the second character, if any, is <em>not</em> one of
211              <dd>Append a <code class=char>U+002B</code>  <code class=char>U+0041</code> <code class=charname>LATIN CAPITAL LETTER
212              <code class=charname>PLUS SIGN</code> (<code class=char>+</code>)  A</code> (<code class=char>A</code>) to <code class=char>U+005A</code>
213              character to <var>result</var>.</dd>  <code class=charname>LATIN CAPITAL LETTER Z</code> (<code class=char>Z</code>),
214            <dt>If <var>c</var> is general sibling combinator  <code class=char>U+005F</code> <code class=charname>LOW LINE</code>
215            (<code class=char>~</code>)</dt>  (<code class=char>_</code>), <code class=char>U+0061</code>
216              <dd>Append a <code class=char>U+007E</code>  <code class=charname>LATIN SMALL LETTER A</code>
217              <code class=charname>TILDE</code> (<code class=char>~</code>)  (<code class=char>a</code>) to <code class=char>U+006A</code>
218              character to <var>result</var>.</dd>  <code class=charname>LATIN SMALL LETTER Z</code> (<code class=char>z</code>),
219            </dl>  <code>U+0080</code> to <code>U+D7FF</code>, or
220          </li>  <code>U+E000</code> to <code>U+10FFFF</code>, or
221          <li>Append a <code class=char>U+0020</code>  <var>n</var> is equal to <code class=char>U+002D</code>
222          <code class=charname>SPACE</code> character to  <code class=charname>HYPHEN-MINUS</code> (<code class=char>-</code>), then
223          <var>result</var>.</li>  replace the <code class=char>U+002D</code>
224          </ol>  <code class=charname>HYPHEN-MINUS</code> (<code class=char>-</code>)
225        </dd>  character by string <code>\00002D</code>.</li>
226      </dl>  <li>Then, <var>n</var> is the result of the algorithm.</li>
   </ol>  
 </li>  
 <li>Then, <var>result</var> is the  
 <abbr title="Selectors Serialization Format for Testing">SSFT</abbr>  
 representation of <var>gs</var>.</li>  
227  </ol>  </ol>
228    
229    <p>To <dfn id=algorithm-normalize-a-string title="normalize a STRING">normalize
230    a <code>STRING</code> (<dfn id=var-s><var>s</var></dfn>)</dfn>,
231    the following algorithm <em class=rfc2119>MUST</em> be used:</p>
232    <ol>
233    <li><p>Replace the escape sequences (<code>\</code> and following
234    characters) in <var>s</var> by characters represented by them
235    (or an empty string if <code>\</code> is immediately followed by
236    newline character(s)) respectively.</p></li>
237    <li><p>Remove the quotation characters in <var>s</var>
238    if <var>s</var> is a <code>STRING</code>.</p>
239    
240    <div class="note memo">
241    <p>The input <var>s</var> to this algorithm may be an
242    <code>IDENT</code>.</p>
243    </div></li>
244    <li><p>If there is any character that is <em>not</em> one of
245    <code class=char>U+0020</code> <code class=charname>SPACE</code>,
246    <code class=char>U+0021</code> <code class=charname>EXCLAMATION MARK</code>
247    (<code class=char>!</code>), <code class=char>U+0023</code>
248    <code class=charname>NUMBER SIGN</code> (<code class=char>#</code>) to
249    <code class=char>U+005B</code> <code class=charname>LEFT SQUARE
250    BRACKET</code>, <code class=char>U+005D</code> <code class=charname>RIGHT
251    SQUARE BRACKET</code> to <code class=char>U+D7FF</code>, or
252    <code class=char>U+E000</code> to <code class=char>U+10FFFF</code> in
253    <var>s</var>, then replace it by string <code>\<var>HHHHHH</var></code>, where
254    <dfn id=var-HHHHHH><var>HHHHHH</var></dfn> is the upper$B!>(Bcase zero$B!>(Bpadded
255    hexadecimal representation of the character.  If the character
256    is outside the range of <code>[<code class=char>U+0000</code>,
257    <code class=char>U+10FFFF</code>]</code>, <var>HHHHHH</var>
258    <em class=rfc2119>MUST</em> be <code>FFFFFF</code>.</p></li>
259    <li><p>Insert a <code class=char>U+0022</code> <code class=charname>QUOTATION
260    MARK</code> (<code class=char>"</code>) at the beginning of
261    <var>s</var>.</p></li>
262    <li><p>Insert a <code class=char>U+0022</code> <code class=charname>QUOTATION
263    MARK</code> (<code class=char>"</code>) at the end of <var>s</var>.</p></li>
264    <li><p>Then, <var>s</var> is the result of the algorithm.</p></li>
265    </ol>
266    
267    <p>A <dfn id=newline title=newline>newline</dfn>
268    <em class=rfc2119>SHOULD</em> be represented as a
269    <code class=char>U+000A</code> <code class=charname>LINE FEED</code>
270    character.  However, depending on the context where
271    the <abbr title="Selectors Serialization Format for Testing">SSFT</abbr>
272    representation is in use, a sequence of
273    <code class=char>U+000D</code> <code class=charname>CARRIAGE RETURN</code>
274    followed by a <code class=char>U+000A</code>
275    <code class=charname>LINE FEED</code> (i.e. a
276    <code>CRLF</code> sequence) or a character
277    <code class=char>U+000D</code> <code class=charname>CARRIAGE RETURN</code>
278    <em class=rfc2119>MAY</em> be used as a <a href="#newline">newline</a> instead.
279    <a href="#newline">Newline</a> representations
280    <em class=rfc2119>SHOULD</em> be consistent in an
281    <abbr title="Selectors Serialization Format for Testing">SSFT</abbr>
282    representation.</p>
283    
284    <div class="note memo">
285    <p>Therefore, newlines must be normalized before
286    <abbr title="Selectors Serialization Format for Testing">SSFT</abbr>
287    representations are literally compared.</p>
288    </div>
289    
290    <div class="issue ed">
291    <p>Need to define <dfn id=lower-case>lower$B!>(Bcase</dfn>.
292    It is tr/A-Z/a-z/ for now.</p>
293    </div>
294    
295    </div>
296    
297    
298    <div class=section id=serializing-simple-selectors>
299    <h3>Serializing Simple Selectors</h3>
300    
301    <p>No <abbr title="Selectors Serialization Format for Testing">SSFT</abbr>
302    representation is defined for an invalid <a href="#simple-selector">simple
303    selector</a>.</p>
304    
305  <p>To  <p>To
306  <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
307  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>,
308    the following algorithm <em class=rfc2119>MUST</em> be used:</p>
309    <ol>
310    <li>Let <dfn id=var-r><var>r</var></dfn> an empty string.</li>
311    <li>Process <var>ss</var> as following:
312    
313  <dl class=switch>  <dl class=switch>
314  <dt>If <var>ss</var> is a type or universal selector</dt>  <dt>If <var>ss</var> is a type or universal selector</dt>
315    <dd>    <dd>
316      <ol>      <ol>
317      <li>      <li>Append a namespace prefix as following:
318    
319        <dl class=switch>        <dl class=switch>
320        <dt>If a namespace URI is specified (via namespace prefix, or        <dt>If a namespace URI is specified (via namespace prefix, or
321        by omitting namespace prefix where a default namespace is specified)</dt>        by omitting namespace prefix where a default namespace is specified)</dt>
# Line 231  a simple selector (<dfn><var id=var-ss>s Line 324  a simple selector (<dfn><var id=var-ss>s
324        prefix)</dt>        prefix)</dt>
325          <dd>Append a <code class=char>U+007C</code>          <dd>Append a <code class=char>U+007C</code>
326          <code class=charname>VERTICAL BAR</code> (<code class=char>|</code>)          <code class=charname>VERTICAL BAR</code> (<code class=char>|</code>)
327          character to <var>result</var>.</dd>          character to <var>r</var>.</dd>
328        <dt>If no namespace is specified (by namespace prefix <code>*</code>,        <dt>If no namespace is specified (by namespace prefix <code>*</code>,
329        or by omitting namespace prefix where no default namespace is        or by omitting namespace prefix where no default namespace is
330        specified)</dt>        specified)</dt>
# Line 239  a simple selector (<dfn><var id=var-ss>s Line 332  a simple selector (<dfn><var id=var-ss>s
332          <code class=charname>ASTERISK</code> (<code class=char>*</code>)          <code class=charname>ASTERISK</code> (<code class=char>*</code>)
333          character, followed by a <code class=char>U+007C</code>          character, followed by a <code class=char>U+007C</code>
334          <code class=charname>VERTICAL BAR</code> (<code class=char>|</code>)          <code class=charname>VERTICAL BAR</code> (<code class=char>|</code>)
335          character, to <var>result</var>.</dd>          character, to <var>r</var>.</dd>
336        </dl>        </dl>
337      </li>      </li>
338      <li>If <var>ss</var> is a type selector, append the      <li>If <var>ss</var> is a type selector, append the
339      <span class=ed>@@ normalized</span> local name to <var>result</var>.</li>      <a href="#algorithm-normalize-an-ident" title="normalize an IDENT">normalized</a>
340        local name to <var>r</var>.</li>
341      <li>If <var>ss</var> is a universal selector, append      <li>If <var>ss</var> is a universal selector, append
342      a <code class=char>U+002A</code> <code class=charname>ASTERISK</code>      a <code class=char>U+002A</code> <code class=charname>ASTERISK</code>
343      (<code class=char>*</code>) character to <var>result</var>.</li>      (<code class=char>*</code>) character to <var>r</var>.</li>
344      </ol>      </ol>
345    </dd>    </dd>
346  <dt>If <var>ss</var> is an attribute selector</dt>  <dt>If <var>ss</var> is an attribute selector</dt>
347    <dd class=ed>@@</dd>    <dd>
348        <ol>
349        <li>Append a <code class=char>U+005B</code> <code class=charname>LEFT
350        SQUARE BRACKET</code> (<code class=char>[</code>) to
351        <var>r</var>.</li>
352        <li>
353          Append a namespace prefix as following:
354          <dl>
355          <dt>If a namespace URI is specified</dt>
356            <dd class=ed>@@</dd>
357            <dd class=ed>@@ Current reference implementation is wrong,
358            since its result of sorting depends on namespace prefix.</dd>
359          <dt>If the null namespace is specified</dt>
360            <dd>Append a <code class=char>U+007C</code>
361            <code class=charname>VERTICAL BAR</code> character to
362            <var>r</var>.</dd>
363          <dt>If no namespace is specified</dt>
364            <dd>Append a <code class=char>U+002A</code>
365            <code class=charname>ASTERISK</code> (<code class=char>*</code>)
366            character, followed by a <code class=char>U+007C</code>
367            <code class=charname>VERTICAL BAR</code> (<code class=char>|</code>)
368            character, to <var>r</var>.</dd>
369          </dl>
370        </li>
371        <li>Append the
372        <a href="#algorithm-normalize-an-ident" title="normalize an IDENT">normalized</a>
373        local name to <var>r</var>.</li>
374        <li>If a value is specified in <var>ss</var>:
375          <ol>
376          <li>Depending on the way to match, append <code>=</code>,
377          <code>~=</code>, <code>|=</code>, <code>^=</code>,
378          <code>$=</code>, or <code>*=</code> to <var>r</var>.</li>
379          <li>Append the
380          <a href="#algorithm-normalize-a-string" title="normalize a string">normalized</a>
381          value to <var>r</var>.</li>
382          </ol>
383        </li>
384        <li>Append a <code class=char>U+005D</code> <code class=charname>RIGHT
385        SQUARE BRACKET</code> (<code class=char>]</code>) to
386        <var>r</var>.</li>
387        </ol>
388      </dd>
389  <dt>If <var>ss</var> is a class selector</dt>  <dt>If <var>ss</var> is a class selector</dt>
390    <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
391    STOP</code> (<code class=char>.</code>) character, followed    STOP</code> (<code class=char>.</code>) character, followed
392    by <span class=ed>@@ normalized</span> class name,    by <a href="#algorithm-normalize-an-ident" title="normalize an IDENT">normalized</a>
393    <var>result</var>.</dd>    class name, to <var>r</var>.</dd>
394  <dt>If <var>ss</var> is an <abbr>ID</abbr> selector</dt>  <dt>If <var>ss</var> is an <abbr>ID</abbr> selector</dt>
395    <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
396    SIGN</code> (<code class=char>#</code>) character, followed    SIGN</code> (<code class=char>#</code>) character, followed
397    by <span class=ed>@@ normalized</span> <abbr>ID</abbr>,    by <a href="#algorithm-normalize-an-ident" title="normalize an IDENT">normalized</a>
398    to <var>result</var>.</dd>    <abbr>ID</abbr>, to <var>r</var>.</dd>
399  <dt>If <var>ss</var> is a pseudo$B!>(Bclass selector</dt>  <dt>If <var>ss</var> is a pseudo$B!>(Bclass selector</dt>
400    <dd>    <dd>
401      <ol>      <ol>
402      <li>Append a <code class=char>U+003A</code>      <li>Append a <code class=char>U+003A</code>
403      <code class=charname>COLON</code> (<code class=char>:</code>) character      <code class=charname>COLON</code> (<code class=char>:</code>) character
404      to <var>result</var>.</li>      to <var>r</var>.</li>
405      <li>Append the <span class=ed>@@ normalized</span> name of the      <li>Append the
406      pseudo$B!>(Bclass to <var>result</var>.</li>      <a href="#algorithm-normalize-an-ident" title="normalize an IDENT">normalized</a>
407        name (in <a href="#lower-case">lower$B!>(Bcase</a>) of the pseudo$B!>(Bclass to
408        <var>r</var>.</li>
409      <li>Append any arguments as following:      <li>Append any arguments as following:
410        <dl class=switch>        <dl class=switch>
411        <dt>If the name of the pseudo$B!>(Bclass is <code>lang</code></dt>        <dt>If the name of the pseudo$B!>(Bclass is <code>lang</code></dt>
# Line 276  a simple selector (<dfn><var id=var-ss>s Line 413  a simple selector (<dfn><var id=var-ss>s
413            <ol>            <ol>
414            <li>Append a <code class=char>U+0028</code> <code class=charname>LEFT            <li>Append a <code class=char>U+0028</code> <code class=charname>LEFT
415            PARENTHESIS</code> (<code class=char>(</code>) character            PARENTHESIS</code> (<code class=char>(</code>) character
416            to <var>result</var>.</li>            to <var>r</var>.</li>
417            <li>Append <span class=ed>@@ normalized</span>            <li>Append the
418            language tag (the argument) to <var>result</var>.</li>            <a href="#algorithm-normalize-an-ident" title="normalize an IDENT">normalized</a>
419              language tag (the argument) to <var>r</var>.
420              <span class="issue ed">Should we normalize cases?</span></li>
421            <li>Append a <code class=char>U+0029</code>            <li>Append a <code class=char>U+0029</code>
422            <code class=charname>RIGHT PARENTHESIS</code>            <code class=charname>RIGHT PARENTHESIS</code>
423            (<code class=char>)</code>) character            (<code class=char>)</code>) character
424            to <var>result</var>.</li>            to <var>r</var>.</li>
425            </ol>            </ol>
426          </dd>          </dd>
427        <dt>If the name of the pseudo$B!>(Bclass is        <dt>If the name of the pseudo$B!>(Bclass is
# Line 291  a simple selector (<dfn><var id=var-ss>s Line 430  a simple selector (<dfn><var id=var-ss>s
430            <ol>            <ol>
431            <li>Append a <code class=char>U+0028</code> <code class=charname>LEFT            <li>Append a <code class=char>U+0028</code> <code class=charname>LEFT
432            PARENTHESIS</code> (<code class=char>(</code>) character            PARENTHESIS</code> (<code class=char>(</code>) character
433            to <var>result</var>.</li>            to <var>r</var>.</li>
434            <li>Append <span class=ed>@@ normalized</span>            <li>Append the
435            string (the argument) to <var>result</var>.</li>            <a href="#algorithm-normalize-a-string" title="normalize a string">normalized</a>
436              string (the argument) to <var>r</var>.</li>
437            <li>Append a <code class=char>U+0029</code>            <li>Append a <code class=char>U+0029</code>
438            <code class=charname>RIGHT PARENTHESIS</code>            <code class=charname>RIGHT PARENTHESIS</code>
439            (<code class=char>)</code>) character            (<code class=char>)</code>) character
440            to <var>result</var>.</li>            to <var>r</var>.</li>
441            </ol>            </ol>
442          </dd>          </dd>
443        <dt>If name of the pseudo$B!>(Bclass is either <code>nth-child</code>,        <dt>If name of the pseudo$B!>(Bclass is either <code>nth-child</code>,
# Line 307  a simple selector (<dfn><var id=var-ss>s Line 447  a simple selector (<dfn><var id=var-ss>s
447            <ol>            <ol>
448            <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
449            PARENTHESIS</code> (<code class=char>(</code>) character            PARENTHESIS</code> (<code class=char>(</code>) character
450            to <var>result</var>.</li>            to <var>r</var>.</li>
451            <li>Append <span class=ed>@@ normalized</span>            <li>Append <span class=ed>@@ normalized</span>
452            integer <var>a</var> to <var>result</var>.            integer <var>a</var> to <var>r</var>.
453            If the argument is a keyword <code>odd</code> or <code>even</code>,            If the argument is a keyword <code>odd</code> or <code>even</code>,
454            <var>a</var> is <code>2</code>.  If <var>a</var> and            <var>a</var> is <code>2</code>.  If <var>a</var> and
455            <code>n</code> is omitted, <var>a</var> is assumed as            <code>n</code> is omitted, <var>a</var> is assumed as
# Line 320  a simple selector (<dfn><var id=var-ss>s Line 460  a simple selector (<dfn><var id=var-ss>s
460            character).</li>            character).</li>
461            <li>Append a <code class=char>U+006E</code>            <li>Append a <code class=char>U+006E</code>
462            <code class=charname>LATIN SMALL LETTER N</code>            <code class=charname>LATIN SMALL LETTER N</code>
463            (<code class=char>n</code>) character to <var>result</var>.</li>            (<code class=char>n</code>) character to <var>r</var>.</li>
464            <li>Append <span class=ed>@@ normalized</span>            <li>Append <span class=ed>@@ normalized</span>
465            integer <var>b</var> to <var>result</var>.            integer <var>b</var> to <var>r</var>.
466            It <em class=rfc2119>MUST</em> be preceded by a sign,            It <em class=rfc2119>MUST</em> be preceded by a sign,
467            either <code class=char>U+002B</code> <code class=charname>PLUS            either <code class=char>U+002B</code> <code class=charname>PLUS
468            SIGN</code> (<code class=char>+</code>) or            SIGN</code> (<code class=char>+</code>) or
# Line 339  a simple selector (<dfn><var id=var-ss>s Line 479  a simple selector (<dfn><var id=var-ss>s
479            <li>Append a <code class=char>U+0029</code>            <li>Append a <code class=char>U+0029</code>
480            <code class=charname>RIGHT PARENTHESIS</code>            <code class=charname>RIGHT PARENTHESIS</code>
481            (<code class=char>)</code>) character            (<code class=char>)</code>) character
482            to <var>result</var>.</li>            to <var>r</var>.</li>
483            </ol>            </ol>
484          </dd>          </dd>
485        <dt>If the name of the pseudo$B!>(Bclass is <code>not</code></dt>        <dt>If the name of the pseudo$B!>(Bclass is <code>not</code></dt>
# Line 353  a simple selector (<dfn><var id=var-ss>s Line 493  a simple selector (<dfn><var id=var-ss>s
493              <code class=charname>LATIN SMALL LETTER T</code>, and              <code class=charname>LATIN SMALL LETTER T</code>, and
494              <code class=char>U+0028</code> <code class=charname>LEFT              <code class=char>U+0028</code> <code class=charname>LEFT
495              PARENTHESIS</code> (<code>:not(</code>), followed by a              PARENTHESIS</code> (<code>:not(</code>), followed by a
496              <a href="#newline">newline</a>, to <var>result</var>.</li>              <a href="#newline">newline</a>, to <var>r</var>.</li>
497              <li>Append four <code class=char>U+0020</code>              <li>Append four <code class=char>U+0020</code>
498              <code class=charname>SPACE</code> characters to              <code class=charname>SPACE</code> characters to
499              <var>result</var>.</li>              <var>r</var>.</li>
500              <li>Append four <code class=char>U+0020</code>              <li>Append four <code class=char>U+0020</code>
501              <code class=charname>SPACE</code> characters to              <code class=charname>SPACE</code> characters to
502              <var>result</var> again.</li>              <var>r</var> again.</li>
503              <li><a href="#algorithm-serialize-a-simple-selector">Serialize              <li><a href="#algorithm-serialize-a-simple-selector">Serialize
504              the simple selector specified as the argument to the              the simple selector specified as the argument to the
505              <code>not</code> pseudo$B!>(Bclass</a>.</li>              <code>not</code> pseudo$B!>(Bclass</a>.</li>
506              <li>Append a <a href="#newline">newline</a> to              <li>Append a <a href="#newline">newline</a> to
507              <var>result</var>.</li>              <var>r</var>.</li>
508              <li>Append four <code class=char>U+0020</code>              <li>Append four <code class=char>U+0020</code>
509              <code class=charname>SPACE</code> characters to              <code class=charname>SPACE</code> characters to
510              <var>result</var>.</li>              <var>r</var>.</li>
511              <li>Append a <code class=char>U+0029</code>              <li>Append a <code class=char>U+0029</code>
512              <code class=charname>RIGHT PARENTHESIS</code>              <code class=charname>RIGHT PARENTHESIS</code>
513              (<code class=char>)</code>) character              (<code class=char>)</code>) character
514              to <var>result</var>.</li>              to <var>r</var>.</li>
515            </ol>            </ol>
516          </dd>          </dd>
517          <dt>Otherwise</dt>
518            <dd>The pseudo$B!>(Bclass is not supported by this version of
519            <abbr title="Selectors Serialization Format for Testing">SSFT</abbr>
520            and therefore no
521            <abbr title="Selectors Serialization Format for Testing">SSFT</abbr>
522            representation is defined for <var>ss</var>.  Stop the algorithm.</dd>
523        </dl>        </dl>
524      </li>      </li>
525      </ol>      </ol>
# Line 383  a simple selector (<dfn><var id=var-ss>s Line 529  a simple selector (<dfn><var id=var-ss>s
529      <ol>      <ol>
530      <li>Append two <code class=char>U+003A</code>      <li>Append two <code class=char>U+003A</code>
531      <code class=charname>COLON</code> characters (<code>::</code>)      <code class=charname>COLON</code> characters (<code>::</code>)
532      to <var>result</var>.</li>      to <var>r</var>.</li>
533      <li>Append the <span class=ed>@@ normalized</span> name of the      <li>Append the
534      pseudo$B!>(Belement to <var>result</var>.</li>      <a href="#algorithm-normalize-an-ident" title="normalize an IDENT">normalized</a>
535      <!-- For future version: append "(", arguments, ")", if any. -->      name (in <a href="#lower-case">lower$B!>(Bcase</a>) of the pseudo$B!>(Belement
536        to <var>r</var>.</li>
537        <li>If the pseudo$B!>(Belement has any arguments:
538            The pseudo$B!>(Belement is not supported by this version of
539            <abbr title="Selectors Serialization Format for Testing">SSFT</abbr>
540            and therefore no
541            <abbr title="Selectors Serialization Format for Testing">SSFT</abbr>
542            representation is defined for <var>ss</var>.  Stop the algorithm.
543        </li>
544      </ol>      </ol>
545    </dd>    </dd>
546  </dl>  </dl>
547    </li>
548    <li>Then, <var>r</var> is the
549    <abbr title="Selectors Serialization Format for Testing">SSFT</abbr>
550    representation of <var>ss</var>.</li>
551    </ol>
552    
553    </div>
554    
555  <p>A <dfn id=newline title=newline>newline</dfn>  <div class=section id=serializing-groups-of-selectors>
556  <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> or a character  
 <code class=char>U+000D</code> <code class=charname>CARRIAGE RETURN</code>  
 <em class=rfc2119>MAY</em> be used as a newline instead.</p>  
557    
558  <div class="note memo">  <p>No <abbr title="Selectors Serialization Format for Testing">SSFT</abbr>
559  <p>Therefore, when  representation is defined for an invalid
560    <a href="http://www.w3.org/TR/css3-selectors/#grouping">group of
561    selectors</a>.</p>
562    
563    <p>To
564    <dfn id=algorithm-serialize-a-group-of-selectors title="serialize a group of selectors">serialize
565    a group of selectors (<dfn id=var-gs><var>gs</var></dfn>)</dfn>,
566    the following algorithm <em class=rfc2119>MUST</em> be used:</p>
567    <ol>
568    <li>Let <dfn id=var-result><var>result</var></dfn> an empty string.</li>
569    <li>For each selector (<dfn id=var-selector><var>selector</var></dfn>) in
570    <var>gs</var>:
571      <ol>
572      <li>If <var>selector</var> is <em>not</em> the first selector
573      in the <var>gs</var>, then append a <code class=char>U+002C</code>
574      <code class=charname>COMMA</code> (<code class=char>,</code>) followed by a
575      <a href="#newline">newline</a> to <var>result</var>.</li>
576      <li>Append four <code class=char>U+0020</code>
577      <code class=charname>SPACE</code> characters to <var>result</var>.</li>
578      <li>Process each sequence of simple selectors or
579      combinator in <var>selector</var> as following:
580        <dl class=switch>
581        <dt>If it is a sequence of simle selector
582        (<dfn id=var-sss><var>sss</var></dfn>)</dt>
583          <dd>
584            <ol>
585            <li class=ed><a href="#algorithm-serialize-a-simple-selector">Serialize
586            each simple selector</a> in <var>sss</var>.</li>
587            <li class=ed>sort</li>
588            <li>Append a <a href="#newline">newline</a> to <var>result</var>.</li>
589            </ol>
590          </dd>
591        <dt>If it is a combinator (<dfn id=var-c><var>c</var></dfn>)</dt>
592          <dd>
593            <ol>
594            <li>Append two <code class=char>U+0020</code>
595            <code class=charname>SPACE</code> characters to <var>result</var>.</li>
596            <li>Process <var>c</var> as following:
597    
598              <dl class=switch>
599              <dt>If <var>c</var> is descendant combinator (white space)</dt>
600                <dd>Append a <code class=char>U+0020</code>
601                <code class=charname>SPACE</code> character to
602                <var>result</var>.</dd>
603              <dt>If <var>c</var> is child combinator
604              (<code class=char>></code>)</dt>
605                <dd>Append a <code class=char>U+003E</code>
606                <code class=charname>GREATER-THAN SIGN</code>
607                (<code class=char>></code>) character to <var>result</var>.</dd>
608              <dt>If <var>c</var> is adjacent sibling combinator
609              (<code class=char>+</code>)</dt>
610                <dd>Append a <code class=char>U+002B</code>
611                <code class=charname>PLUS SIGN</code> (<code class=char>+</code>)
612                character to <var>result</var>.</dd>
613              <dt>If <var>c</var> is general sibling combinator
614              (<code class=char>~</code>)</dt>
615                <dd>Append a <code class=char>U+007E</code>
616                <code class=charname>TILDE</code> (<code class=char>~</code>)
617                character to <var>result</var>.</dd>
618              </dl>
619            </li>
620            <li>Append a <code class=char>U+0020</code>
621            <code class=charname>SPACE</code> character to
622            <var>result</var>.</li>
623            </ol>
624          </dd>
625        </dl>
626      </ol>
627    </li>
628    <li>Then, <var>result</var> is the
629  <abbr title="Selectors Serialization Format for Testing">SSFT</abbr>  <abbr title="Selectors Serialization Format for Testing">SSFT</abbr>
630  representations are literally compared, newlines must be normalized.</p>  representation of <var>gs</var>.</li>
631    </ol>
632    
633  </div>  </div>
634    
635  </div>  </div>
# Line 415  representations are literally compared, Line 637  representations are literally compared,
637  <div class="section" id="parsing">  <div class="section" id="parsing">
638  <h2>Parsing  <h2>Parsing
639  <abbr title="Selectors Serialization Format for Testing">SSFT</abbr>  <abbr title="Selectors Serialization Format for Testing">SSFT</abbr>
640  Groups of Selectors</h2>  Representations of Selectors</h2>
641    
642  <p>Since <a href="#serializing">the serializing algorithm</a> is  <p>Since <a href="#algorithm-serialize-a-group-of-selectors">the serializing
643  so designed that it always output a valid  algorithm for groups of selectors</a> is so designed that it always outputs a
644  <a href="http://www.w3.org/TR/css3-selectors/#grouping">group of  valid <a href="http://www.w3.org/TR/css3-selectors/#grouping">group of
645  selectors</a>, no special parser for the  selectors</a>, no special parser for the
646  <abbr title="Selectors Serialization Format for Testing">SSFT</abbr>  <abbr title="Selectors Serialization Format for Testing">SSFT</abbr>
647  representation is necessary.  Any conforming parser for  representation is necessary.  Any conforming parser for
648  <a href="http://www.w3.org/TR/css3-selectors/#grouping">groups of  <a href="http://www.w3.org/TR/css3-selectors/#grouping">groups of
649  selectors</a> <em class=rfc2119>MAY</em> be used  selectors</a> <em class=rfc2119>MAY</em> be used
650  to parse <abbr title="Selectors Serialization Format for Testing">SSFT</abbr>  to parse <abbr title="Selectors Serialization Format for Testing">SSFT</abbr>
651  representations of groups of selectors.</p>  representations of
652    <a href="http://www.w3.org/TR/css3-selectors/#grouping">groups of
653    selectors</a>.</p>
654    
655    <p>Likewise, <a href="#algorithm-serialize-a-simple-selector">the serializing
656    algorithm for simple selectors</a> always outputs a valid
657    <a href="#simple-selector">simple selector</a> and therefore any
658    conforming parser for <a href="#simple-selector">simple selector</a>
659    <em class=rfc2119>MAY</em> be used to parse
660    <abbr title="Selectors Serialization Format for Testing">SSFT</abbr>
661    representations of <a href="#simple-selector">simple selectors</a>.</p>
662  </div>  </div>
663    
664  <div class="section" id="examples">  <div class="section" id="examples">
# Line 462  by choosing <q>Selectors</q> radio butto Line 694  by choosing <q>Selectors</q> radio butto
694    <a href="urn:ietf:bcp:14"><abbr title="Best Current Practice">BCP</abbr>    <a href="urn:ietf:bcp:14"><abbr title="Best Current Practice">BCP</abbr>
695    14</a>, <abbr title="Request for Comments">RFC</abbr> 2119,    14</a>, <abbr title="Request for Comments">RFC</abbr> 2119,
696    <time datetime=1997-03>March 1997</time>.    <time datetime=1997-03>March 1997</time>.
697    This version of the specification is referenced</dd>    This version of the specification is referenced.</dd>
698  <dt id=ref-SELECTORS>SELECTORS</dt>  <dt id=ref-SELECTORS>SELECTORS</dt>
699    <dd><a href="http://www.w3.org/TR/2005/WD-css3-selectors-20051215"><cite>Selectors</cite></a>,    <dd><a href="http://www.w3.org/TR/2005/WD-css3-selectors-20051215"><cite>Selectors</cite></a>,
700    <abbr title="World Wide Web Consortium">W3C</abbr> Working Draft,    <abbr title="World Wide Web Consortium">W3C</abbr> Working Draft,
# Line 504  by choosing <q>Selectors</q> radio butto Line 736  by choosing <q>Selectors</q> radio butto
736    <code class=URI>&lt;<a href="http://dev.w3.org/2006/webapi/selectors-api/Overview.html">http://dev.w3.org/2006/webapi/selectors-api/Overview.html</a>></code>.    <code class=URI>&lt;<a href="http://dev.w3.org/2006/webapi/selectors-api/Overview.html">http://dev.w3.org/2006/webapi/selectors-api/Overview.html</a>></code>.
737    The latest published version of the specification is available at    The latest published version of the specification is available at
738    <code class=URI>&lt;<a href="http://www.w3.org/TR/selectors-api/">http://www.w3.org/TR/selectors-api/</a>></code>.</dd>    <code class=URI>&lt;<a href="http://www.w3.org/TR/selectors-api/">http://www.w3.org/TR/selectors-api/</a>></code>.</dd>
739  <dt id=XBL2>XBL2</dt>  <dt id=ref-XBL2>XBL2</dt>
740    <dd><cite><a href="http://www.mozilla.org/projects/xbl/xbl2.html"><abbr>XBL</abbr>    <dd><cite><a href="http://www.mozilla.org/projects/xbl/xbl2.html"><abbr>XBL</abbr>
741    2.0</a></cite>, Mozilla.org, <time datetime=2007-03-15>15 Mar 2007</time>.    2.0</a></cite>, Mozilla.org, <time datetime=2007-03-15>15 Mar 2007</time>.
742    Work in progress.  The latest    Work in progress.  The latest
Legend:
Removed from v.1.8  
changed lines
  Added in v.1.17
admin@suikawiki.org
 ViewVC Help
Powered by ViewVC 1.1.24