/[suikacvs]/markup/html/scripting-parser/parser.html

Diff of /markup/html/scripting-parser/parser.html

Parent Directory | Revision Log | View Patch Patch

-revision 1.5 by wakaba,
Fri Apr 25 11:40:56 2008 UTC
+revision 1.15 by wakaba,
Tue Apr 29 03:29:41 2008 UTC
 Line 1
  <!DOCTYPE HTML>
  <html lang=en>
  <head>
- <title>Demo of HTML5 Parsing Algorithm with Scripting Enabled</title>
+ <title>Live Scripting HTML Parser</title>
+ <link rel=author href="http://suika.fam.cx/~wakaba/who?">
+ <link rel=license href="http://suika.fam.cx/c/gnu/gpl"
+     title="GNU GPL2 or later">
  <style>
+   h1 {
+     margin: 0;
+     font-size: 150%;
+   }
+   h2 {
+     margin: 0;
+     font-size: 100%;
+   }
+   p {
+     margin: 0 1em;
+   }
    textarea {
-      display: block;
+     width: 100%;
-      width: 80%;
+     -width: 99%;
-      margin-left: auto;
+     height: 10em;
-      margin-right: auto;
-      min-height: 20em;
    }
    output {
      display: block;
-Line 18
+Line 30
    }
  </style>
  <script>
+   var delayedUpdater = 0;
    function update () {
-     document.logElement.textContent = '';
+     if (delayedUpdater) {
-     var p = new Parser (new InputStream (document.sourceElement.value));
+       clearTimeout (delayedUpdater);
-     var doc = p.doc;
+       delayedUpdater = 0;
-     p.parse ();
+     }
-     log (dumpTree (doc, ''));
+     delayedUpdater = setTimeout (update2, 100);
    } // update
+   function update2 () {
+     var v = document.sourceElement.value;
+     if (v != document.previousSourceText) {
+       document.previousSourceText = v;
+       document.links['permalink'].href
+           = location.pathname + '?s=' + encodeURIComponent (v);
+       document.links['ldvlink'].href
+           = 'http://software.hixie.ch/utilities/js/live-dom-viewer/?'
+           + encodeURIComponent (v);
+       document.logElement.textContent = '';
+       var p = new Parser (new InputStream (v));
+       var doc = p.doc;
+       p.parse ();
+       log (dumpTree (doc, ''));
+       if (p.hasAsyncScript) {
+         log ('Some script codes are executed asynchronously; it means that the document might be rendered in different ways depending on the network condition and other factors');
+       }
+     }
+   } // update2
+   var logIndentLevel = 0;
    function log (s) {
+     var indent = '';
+     for (var i = 0; i < logIndentLevel; i++) {
+       indent += '  ';
+     }
+     s = indent + s.replace (/\n/g, "\n" + indent);
      document.logElement.appendChild (document.createTextNode (s + "\n"));
    } // log
-Line 42
+Line 85
      }
      this.doc = doc;
      this.openElements = [doc];
-     this.in = i;
+     this.input = i;
      this.scriptsExecutedAfterParsing = [];
+     this.scriptsExecutedSoon = [];
+     this.scriptsExecutedAsynchronously = [];
    } // Parser
    Parser.prototype.getNextToken = function () {
      var p = this;
-     var i = this.in;
+     var i = this.input;
-     if (this.parseMode == 'script') {
+     if (this.parseMode == 'cdata') {
+       var tagName = this.endTagName;
        var token;
        if (p.insertionPoint <= 0) {
          return {type: 'abort'};
-Line 67
+Line 113
          return '';
        });
        if (token) return token;
-       i.s = i.s.replace (/^<\/[Ss][Cc][Rr][Ii][Pp][Tt]>/, function (s) {
+       var pattern = new RegExp ('^</' + tagName + '>', 'i');
+       i.s = i.s.replace (pattern, function (s) {
          if (p.insertionPoint < s.length) {
            token = {type: 'abort'};
            return s;
          }
-         token = {type: 'end-tag', value: 'script'};
+         token = {type: 'end-tag', value: tagName};
          p.insertionPoint -= s.length;
          return '';
        });
        if (token) return token;
        var m;
-       if ((p.insertionPoint < '</script'.length) &&
+       if ((p.insertionPoint < ('</' + tagName).length) &&
-           (m = i.s.match (/^<\/([SCRIPTscript]+)/))) {
+           (m = i.s.match (/^<\/([A-Za-z]+)/))) {
          var v = m[1].substring (0, p.insertionPoint).toLowerCase ();
-         if (v == 'script'.substring (0, p.insertionPoint - '</'.length)) {
+         if (v == tagName.substring (0, p.insertionPoint - '</'.length)) {
            return {type: 'abort'};
          }
        }
-Line 121
+Line 168
          tagName = v.toLowerCase ();
          return '';
        });
-       e = e.replace (/^\s*(\S+)\s*(?:=\s*"([^"]*)"|'([^']*)'|([^"']+))?/,
+       while (true) {
-       function (x, attrName, attrValue1, attrValue2, attrValue3) {
+         var m = false;
-         attrs[attrName] = attrValue1 || attrValue2 || attrValue3;
+         e = e.replace (/^\s*([^\s=]+)\s*(?:=\s*(?:"([^"]*)"|'([^']*)'|([^"'\s]*)))?/,
-         return '';
+         function (x, attrName, attrValue1, attrValue2, attrValue3) {
-       });
+           v = attrValue1 || attrValue2 || attrValue3;
+           v = v.replace (/&quot;/g, '"').replace (/&apos;/g, "'")
+               .replace (/&amp;/g, '&');
+           attrs[attrName.toLowerCase ()] = v;
+           m = true;
+           return '';
+         });
+         if (!m) break;
+       }
+       if (e.length) {
+         log ('Broken start tag: "' + e + '"');
+       }
        token = {type: 'start-tag', value: tagName, attrs: attrs};
        p.insertionPoint -= s.length;
        return '';
-Line 156
+Line 214
    } // getNextToken
    Parser.prototype.parse = function () {
-     log ('start parsing');
+     logIndentLevel++;
+     log ('parse: start');
      while (true) {
        var token = this.getNextToken ();
-Line 174
+Line 233
            el.manakaiParserInserted = true;
            // 3. Switch the tokeniser's content model flag to the CDATA state.
-           this.parseMode = 'script';
+           this.parseMode = 'cdata';
+           this.endTagName = 'script';
            // 4.1. Collect all the character tokens.
            while (true) {
-Line 188
+Line 248
              // 4.2. Until it returns a token that is not a character token, or
              // until it stops tokenising.
              } else if (token.type == 'eof' ||
-                        (token.type == 'end-tag' && token.value == 'script') ||
+                        token.type == 'end-tag' ||
                         token.type == 'abort') {
                // 6. Switched back to the PCDATA state.
                this.parseMode = 'pcdata';
                // 7.1. If the next token is not an end tag token with ...
-               if (token.type != 'end-tag') {
+               if (!(token.type == 'end-tag' && token.value == 'script')) {
                  // 7.2. This is a parse error.
                  log ('Parse error: no </' + 'script>');
-Line 224
+Line 284
            this.openElements[this.openElements.length - 1].appendChild (el);
            // 11. Let the insertion point have the value of the old ...
            oldInsertionPoint += this.insertionPoint;
            this.setInsertionPoint (oldInsertionPoint);
            // 12. If there is a script that will execute as soon as ...
+           while (this.scriptExecutedWhenParserResumes) {
+             // 12.1. If the tree construction stage is being called reentrantly
+             if (this.reentrant) {
+               log ('parse: abort (reentrance)');
+               logIndentLevel--;
+               return;
+             // 12.2. Otherwise
+             } else {
+               // 1.
+               var script = this.scriptExecutedWhenParserResumes;
+               this.scriptExecutedWhenParserResumes = null;
+               // 2. Pause until the script has completed loading.
+               //
+               // 3. Let the insertion point to just before the next input char.
+               this.setInsertionPoint (0);
+               // 4. Execute the script.
+               executeScript (this.doc, script);
+               // 5. Let the insertion point be undefined again.
+               this.setInsertionPoint (undefined);
+               // 6. If there is once again a script that will execute ...
+               //
+             }
+           }
+         } else if (token.value == 'style' ||
+                    token.value == 'noscript' ||
+                    token.value == 'xmp') {
+           // 1. Create an element for the token in the HTML namespace.
+           var el = new JSElement (this.doc, token.value);
+           // 2. Append the new element to the current node.
+           this.openElements[this.openElements.length - 1].appendChild (el);
+           // 3. Switch the tokeniser's content model flag to the CDATA state.
+           this.parseMode = 'cdata';
+           this.endTagName = token.value;
+           // 4.1. Collect all the character tokens.
+           while (true) {
+             var token = this.getNextToken ();
+             log ('token: ' + token.type + ' "' + token.value + '"');
+             if (token.type == 'char') {
+               // 5. Append a single Text node to the script element node.
+               el.manakaiAppendText (token.value);
+             // 4.2. Until it returns a token that is not a character token, or
+             // until it stops tokenising.
+             } else if (token.type == 'eof' ||
+                        token.type == 'end-tag' ||
+                        token.type == 'abort') {
+               // 6. Switched back to the PCDATA state.
+               this.parseMode = 'pcdata';
+               // 7.1. If the next token is not an end tag token with ...
+               if (!(token.type == 'end-tag' &&
+                     token.value == this.endTagName)) {
+                 // 7.2. This is a parse error.
+                 log ('Parse error: no </' + this.endTagName + '>');
+                 // 7.3. Mark the script element as "already executed".
+                 el.manakaiAlreadyExecuted = true;
+               } else {
+                 // 7.4. Ignore it.
+                 //
+               }
+               break;
+             }
+           }
          } else {
            var el = new JSElement (this.doc, token.value);
            this.openElements[this.openElements.length - 1].appendChild (el);
-Line 249
+Line 382
          break;
        } else if (token.type == 'abort') {
          log ('parse: abort');
+         logIndentLevel--;
          return;
        }
      }
-Line 259
+Line 393
      // "When a script completes loading" rules start applying.
-     // TODO: Handles "list of scripts that will execute as soon as possible"
+     while (this.scriptsExecutedSoon.length > 0 ||
-     // and "list of scripts that will execute asynchronously"
+            this.scriptsExecutedAsynchronously.length > 0) {
+       // Handle "list of scripts that will execute as soon as possible".
+       while (this.scriptsExecutedSoon.length > 0) {
+         var e = this.scriptsExecutedSoon.shift ();
+         // If it has completed loading
+         log ('Execute an external script not inserted by parser...');
+         executeScript (this.doc, e);
+         // NOTE: It MAY be executed before the end of the parsing, according
+         // to the spec.
+         this.hasAsyncScript = true;
+       }
+       // Handle "list of scripts that will execute asynchronously".
+       while (this.scriptsExecutedAsynchronously.length > 0) {
+         var e = this.scriptsExecutedAsynchronously.shift ();
+         // Step 1.
+         // We assume that all scripts have been loaded at this time.
+         // Step 2.
+         log ('Execute an asynchronous script...');
+         executeScript (this.doc, e);
+         // Step 3.
+         //
+         // Step 4.
+         //
+         this.hasAsyncScript = true;
+       }
+     }
      // Handle "list of scripts that will execute when the document has finished
      // parsing".
-Line 280
+Line 447
      log ('DOMContentLoaded event fired');
-     // "delays tha load event" things has completed:
+     // "delays the load event" things has completed:
      // readyState = 'complete'
      log ('load event fired');
+     logIndentLevel--;
    } // parse
    Parser.prototype.setInsertionPoint = function (ip) {
      if (ip == undefined || ip == null || isNaN (ip)) {
        log ('insertion point: set to undefined');
        this.insertionPoint = undefined;
-     } else if (ip == this.in.s.length) {
+     } else if (ip == this.input.s.length) {
        log ('insertion point: end of file');
        this.insertionPoint = ip;
      } else {
        log ('insertion point: set to ' + ip +
-            ' (before "' + this.in.s.substring (0, 10) + '")');
+            ' (before "' + this.input.s.substring (0, 10) + '")');
        this.insertionPoint = ip;
      }
    }; // setInsertionPoint
-Line 316
+Line 485
      e.parentNode = this;
      if (e.localName == 'script') {
+       logIndentLevel++;
        log ('Running a script: start');
        var doc = this.ownerDocument || this;
-Line 333
+Line 503
        // 2.4. If the script element has its "already executed" flag set
        if (e.manakaiAlreadyExecuted) {
          // 2.5. Abort these steps at this point.
-         log ('Running a script: aborted');
+         log ('Running a script: aborted (already executed)');
+         logIndentLevel--;
          return e;
        }
-Line 351
+Line 522
          p.scriptsExecutedAfterParsing.push (e);
          log ('Running a script: aborted (defer)');
        } else if (e.async && e.src != null) {
-         // TODO
+         p.scriptsExecutedAsynchronously.push (e);
-       } else if (e.async && e.src == null
+         log ('Running a script: aborted (async src)');
-                  /* && list of scripts that will execute asynchronously is not empty */) {
+       } else if (e.async && e.src == null &&
-         // TODO
+                  p.scriptsExecutedAsynchronously.length > 0) {
+         p.scriptsExecutedAsynchronously.push (e);
+         log ('Running a script: aborted (async)');
+         // ISSUE: What is the difference with the case above?
        } else if (e.src != null && e.manakaiParserInserted) {
-         // TODO
+         if (p.scriptExecutedWhenParserResumes) {
+           log ('Error: There is a script that will execute as soon as the parser resumes.');
+         }
+         p.scriptExecutedWhenParserResumes = e;
+         log ('Running a script: aborted (src parser-inserted)');
        } else if (e.src != null) {
-         // TODO
+         p.scriptsExecutedSoon.push (e);
+         log ('Running a script: aborted (src)');
        } else {
          executeScript (doc, e); // even if other scripts are already executing.
        }
        log ('Running a script: end');
+       logIndentLevel--;
      }
      return e;
-Line 372
+Line 552
    function executeScript (doc, e) {
      log ('executing a script block: start');
-     // If the load resulted in an error, then ... firing an error event ...
+     var s;
+     if (e.src != null) {
+       s = getExternalScript (e.src);
+       // If the load resulted in an error, then ... firing an error event ...
+       if (s == null) {
+         log ('error event fired at the script element');
+         return;
+       }
+       log ('External script loaded: "' + s + '"');
+     } else {
+       s = e.text;
+     }
      // If the load was successful
      log ('load event fired at the script element');
-Line 381
+Line 574
      // Scripting is enabled, Document.designMode is disabled,
      // Document is the active document in its browsing context
-       var s;
-       if (e.src != null) {
-         // TODO: from external file
-       } else {
-         s = e.text;
-       }
        parseAndRunScript (doc, s);
      }
      log ('executing a script block: end');
    } // executeScript
+   function getExternalScript (uri) {
+     if (uri.match (/^javascript:/i)) {
+       var m;
+       if (m = uri.match (/^javascript:\s*(?:'([^']*)'|"([^"]+)")\s*$/i)) {
+         if (m[1]) {
+           return unescapeJSLiteral (m[1]);
+         } else if (m[2]) {
+           return unescapeJSLiteral (m[2]);
+         } else {
+           return null;
+         }
+       } else {
+         log ('Complex javascript: URI is not supported: <' + uri + '>');
+         return null;
+       }
+     } else {
+       log ('URI scheme not supported: <' + uri + '>');
+       return null;
+     }
+   } // getExternalScript
    function parseAndRunScript (doc, s) {
      while (true) {
        var matched = false;
-Line 401
+Line 608
          matched = true;
          var args = [];
          t.replace (/('[^']*'|"[^"]*")/g, function (s, v) {
-           args.push (v.substring (1, v.length - 1));
+           args.push (unescapeJSLiteral (v.substring (1, v.length - 1)));
            return '';
          });
          doc.write.apply (doc, args);
          return '';
        });
+       var noDocumentElement = false;
+       s = s.replace (/^\s*var\s+s\s*=\s*document\.createElement\s*\(\s*['"]script['"]\s*\)\s*;\s*s\.src\s*=\s*(?:'([^']*)'|"([^"]*)")\s*;\s*document\.documentElement\.appendChild\s*\(\s*s\s*\)\s*;\s*/,
+       function (s, t, u) {
+         matched = true;
+         var args = [unescapeJSLiteral (t ? t : u)];
+         noDocumentElement = !doc._insertExternalScript.apply (doc, args);
+         return '';
+       });
+       if (noDocumentElement) {
+         log ('Script error: documentElement is null');
+         break;
+       }
+       s = s.replace (/^\s*w\s*\(\s*document\.documentElement\.innerHTML\s*\)\s*;\s*/,
+       function (s, t) {
+         matched = true;
+         log (dumpTree (doc, ''));
+         return '';
+       });
        if (s == '') break;
        if (!matched) {
          log ('Script parse error: "' + s + '"');
-Line 415
+Line 640
      }
    } // parseAndRunScript
+   function unescapeJSLiteral (s) {
+     return s.replace (/\\u([0-9A-Fa-f]{4})/g, function (t, v) {
+       return String.fromCharCode (parseInt ('0x' + v));
+     });
+   } // unescapeJSLiteral
    function JSText (data) {
      this.data = data;
    } // JSText
-Line 442
+Line 673
      // Step 3.
      if (this._parser &&
          !this._parser.scriptCreated &&
-         this._parser.in.insertionPoint != undefined) {
+         this._parser.input.insertionPoint != undefined) {
        log ('document.open () in parsing mode is ignored');
        return this;
      }
-Line 476
+Line 707
      }
      // Step 11.
-     this._parser.setInsertionPoint (this._parser.in.s.length);
+     this._parser.setInsertionPoint (this._parser.input.s.length);
      // Step 12.
      return this;
    }; // document.open
    JSDocument.prototype.write = function () {
+     log ('document.write: start');
+     logIndentLevel++;
      var p = this._parser;
      // 1. If the insertion point is undefined, the open() method must be ...
-Line 494
+Line 728
      // 2. ... inserted into the input stream just before the insertion point.
      var s = Array.join (arguments, '');
      log ('document.write: insert "' + s + '"' +
-          ' before "' + p.in.s.substring (p.insertionPoint, p.insertionPoint + 10) + '"');
+          ' before "' +
-     p.in.s = p.in.s.substring (0, p.insertionPoint) + s
+          p.input.s.substring (p.insertionPoint, p.insertionPoint + 10) + '"');
-         + p.in.s.substring (p.insertionPoint, p.in.s.length);
+     p.input.s = p.input.s.substring (0, p.insertionPoint) + s
+         + p.input.s.substring (p.insertionPoint, p.input.s.length);
      p.insertionPoint += s.length;
      // 3. If there is a script that will execute as soon as the parser resumes
-     // TODO
+     if (p.scriptExecutedAfterParserResumes) {
+       log ('document.write: processed later (there is an unprocessed <script src>)');
+       logIndentLevel--;
+       log ('document.write: return');
+       return;
+     }
      // 4. Process the characters that were inserted, ...
+     var originalReentrant = p.reentrant;
+     p.reentrant = true;
      p.parse ();
+     p.reentrant = originalReentrant;
+     // TODO: "Abort the processing of any nested invokations of the tokeniser,
+     // yielding control back to the caller." (<script> parsing).  Do we need
+     // to do something here?
      // 5. Return
+     logIndentLevel--;
      log ('document.write: return');
      return;
    }; // document.write
+   JSDocument.prototype._insertExternalScript = function (uri) {
+     var s = new JSElement (this, 'script');
+     s.src = uri;
+     if (this.documentElement) {
+       this.documentElement.appendChild (s);
+       return true;
+     } else {
+       return false;
+     }
+   }; // _insertExternalScript
+   JSDocument.prototype.__defineGetter__ ('documentElement', function () {
+     var cn = this.childNodes;
+     for (var i = 0; i < cn.length; i++) {
+       if (cn[i] instanceof JSElement) {
+         return cn[i]
+       }
+     }
+     return null;
+   });
    JSElement.prototype.__defineGetter__ ('text', function () {
      var r = '';
      for (var i = 0; i < this.childNodes.length; i++) {
-Line 528
+Line 797
          r += '| ' + indent + node.localName + '\n';
          if (node.async) r += '| ' + indent + '  async=""\n';
          if (node.defer) r += '| ' + indent + '  defer=""\n';
-         if (node.src) r += '| ' + indent + '  src="' + node.src + '"\n';
+         if (node.src != null) {
+           r += '| ' + indent + '  src="' + node.src + '"\n';
+         }
          r += dumpTree (node, indent + '  ');
        } else if (node instanceof JSText) {
          r += '| ' + indent + '"' + node.data + '"\n';
-Line 542
+Line 813
  </head>
  <body onload="
    document.sourceElement = document.getElementsByTagName ('textarea')[0];
+   var q = location.search;
+   if (q != null) {
+     q = q.substring (1).split (/;/);
+     for (var i = 0; i < q.length; i++) {
+       var v = q[i].split (/=/, 2);
+       v[0] = decodeURIComponent (v[0]);
+       v[1] = decodeURIComponent (v[1] || '');
+       if (v[0] == 's') {
+         document.sourceElement.value = v[1];
+       }
+     }
+   }
    document.logElement = document.getElementsByTagName ('output')[0];
    update ();
  ">
+ <h1>Live Scripting <abbr title="Hypertext Markup Language">HTML</abbr>
+ Parser</h1>
- <textarea onchange=" update () ">&lt;html>
+ <h2>Markup to test
+ (<a href=data:, id=permalink rel=bookmark>permalink</a>,
+ <a href="http://software.hixie.ch/utilities/js/live-dom-viewer/"
+     id=ldvlink>Live <abbr title="Document Object Model">DOM</abbr>
+     Viewer</a>)</h2>
+ <p>
+ <textarea onkeydown=" update () " onchange=" update () " oninput=" update () ">&lt;html>
  &lt;head>&lt;/head>&lt;body>
  &lt;p>
  &lt;script>
-Line 555 
 document.write ('aaaaaaa&lt;/p>&lt;scrip
+Line 848 
 document.write ('aaaaaaa&lt;/p>&lt;scrip
  &lt;p>
  </textarea>
- <output></output>
+ <h2 id=log>Log</h2>
+ <p><output></output>
+ <h2 id=notes>Notes</h2>
+ <p>This is a <em>simplified</em> implementation of
+ <a href="http://www.whatwg.org/specs/web-apps/current-work/#parsing">HTML5
+ Parsing Algorithm</a>.  It only implements script-related part of the
+ algorithm.  Especially, this parser:
+ <ul>
+ <li>Does not support <code>DOCTYPE</code> and comment tokens.
+ <li>Does not support entities except for <code>&amp;quot;</code>,
+ <code>&amp;apos;</code>, and <code>&amp;amp;</code> in <code>script</code>
+ <code>src</code> attribute value.
+ <li>Does not support omissions of start or end tags, the <abbr>AAA</abbr>
+ algorithm, and so on.
+ <li>Does not raise parse errors for invalid attribute specifications in start
+ or end tags.
+ <li>Does not support PCDATA elements (<code>title</code> and
+ <code>textarea</code>).
+ <li>Does not strip the first newline in <code>pre</code> elements.
+ <li>Does not support <code>&lt;!--</code>..<code>--></code> parsing rule
+ in <code>script</code> element.
+ <li>Does not support foreign (SVG or MathML) elements.
+ <li>Only supports <code>script</code> <code>type</code>
+ <code>text/javascript</code>.  <code>type</code> and <code>language</code>
+ attributes are ignored.
+ <li>Only supports limited statements.  It must consist of zero or more
+ of statements looking similar to the following statements, possibly
+ introduced, followed, or separated by white space characters:
+   <ul>
+   <li><code>document.write ("<var>string</var>", ["<var>string</var>", ...]);</code>.
+   <li><code>var s = document.createElement ("script");
+             s.src = "<var>string</var>";
+             document.documentElement.appendChild (s);</code>
+   <li><code>w (document.documentElement.innerHTML);</code> (This statement
+   can be used to dump the document, even when the document has no
+   document element.  The output format is the tree dump format used
+   in html5lib test data, not <abbr>HTML</abbr>.)
+   </ul>
+ Note that strings may be delimited by <code>'</code>s instead of
+ <code>"</code>s.
+ <li>Only supports <code>javascript:</code>
+ <abbr title="Uniform Resourace Identifiers">URI</abbr> scheme in the
+ <code>src</code> attribute of the <code>script</code> element.  In addition,
+ the <abbr title="Uniform Resource Identifiers">URI</abbr> must be conform to
+ the regular expression <code>^javascript:\s*(?:"[^"]*"|'[^']*')\s*$</code>.
+ <li>Only supports <code>\u<var>HHHH</var></code> escapes in JavaScript
+ string literals.
+ <li>Does not handle <i>stop parsing</i> phase correctly if the document is
+ replaced by <code>document.open ()</code> call.  In other word, delayed
+ (deferred or asynchronous) script executions and event firings might be
+ treated in a wrong way if a <code>document.open ()</code> invocation
+ is implicitly done by <code>document.write ()</code> in a delayed script.
+ </ul>
+ <p>For some reason, this parser does not work in browsers that do
+ not support JavaScript 1.5.
+ <!-- TODO: |src| attribute value should refer the value at the time
+ when it is inserted into the document, not the value when the script is
+ executed.  Currently it does not matter, since we don't allow dynamic
+ modification to the |src| content/DOM attribute value yet. -->
  </body>
- </html>
+ </html>
+ <!-- $Date$ -->
+ <!--
+ Copyright 2008 Wakaba <w@suika.fam.cx>
+ This program is free software; you can redistribute it and/or
+ modify it under the terms of the GNU General Public License
+ as published by the Free Software Foundation; either version 2
+ of the License, or (at your option) any later version.
+ This program is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ GNU General Public License for more details.
+ You should have received a copy of the GNU General Public License
+ along with this program; if not, write to the Free Software
+ Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
+ -->

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