XML - Serious Business

package tests
{
	import flash.display.Sprite;
	import flash.utils.getQualifiedClassName;
	
	public class TestXML extends Sprite
	{
		public function TestXML()
		{
			super();
			this.testE4XImplementation();
		}
		
		private function testE4XImplementation():void
		{
//			http://www.ecma-international.org/publications/files/ECMA-ST/Ecma-357.pdf page 10
//			The left curly brace ({) and right curly brace (}) are used  to delimit expressions that may be embedded in tags or 
//			element content to dynamically compute portions of the XML initialiser. The curly braces may appear in literal form 
//			inside an attribute value, a CDATA, PI, or XML Comment. In all other cases, the character reference { shall 
//			be used to represent the left curly brace  ({) and the character reference } shall be used to represent the 
//			right curly brace (}).
			
			var xml:XML = <![CDATA[let's see... {getQualifiedClassName(this)}]]>;
			// I had no doubt, srsly
			//<![CDATA[let's see... {getQualifiedClassName(this)}]]>
			trace(xml.toXMLString());
			XML.ignoreProcessingInstructions = false;
			// ZOMG!!! no autocompletion in Flash Builder 4.5 after this line
			xml = <?{"foo"} could it be true?>; //<?{"foo"} could it be true?>
			trace(xml.toXMLString());
			xml = <foo>should this work? { "tee-hee" } or maybe not?</foo>;
			// <foo>should this work? tee-hee or maybe not?</foo>
			trace(xml.toXMLString());
			XML.ignoreComments = false;
			xml = <!-- unmöglich! { "impossible in German language" } -->;
			// <!-- unmöglich! { "impossible in German language" } -->
			trace(xml.toXMLString());
			
//			http://www.ecma-international.org/publications/files/ECMA-ST/Ecma-357.pdf page 11
//			XMLName :: 
//				XMLNameStart 
//				XMLName XMLNamePart 
//			XMLNameStart  :: 
//				UnicodeLetter 
//				underscore _ 
//				colon : 
			
//			http://www.w3.org/TR/xml/#NT-NameStartChar
//			[4]   	NameStartChar	   ::=   	":" | [A-Z] | "_" | [a-z] | [#xC0-#xD6] | 
//				[#xD8-#xF6] | [#xF8-#x2FF] | [#x370-#x37D] | [#x37F-#x1FFF] | 
//				[#x200C-#x200D] | [#x2070-#x218F] | [#x2C00-#x2FEF] | [#x3001-#xD7FF] | 
//				[#xF900-#xFDCF] | [#xFDF0-#xFFFD] | [#x10000-#xEFFFF]
			try
			{
				xml = <_this-shouldnt-be-valid />;
				// <_this-shouldnt-be-valid/>
				trace(xml.toXMLString());
			}
			catch (error:TypeError)
			{
				trace(error.getStackTrace());
			}
			try
			{
				xml = <$how-about-this />;
				// <$how-about-this/>
				trace(xml.toXMLString());
				trace("$".charCodeAt().toString(16)); //24
			}
			catch (error:TypeError)
			{
				trace(error.getStackTrace());
			}
			try
			{
				xml = <:go-colon-go />;
				trace(xml.toXMLString());
			}
			catch (error:TypeError)
			{
//				TypeError: Error #1090: XML parser failure: element is malformed.
//				
//				at tests::TestProto/testE4XImplementation()[/home/wvxvw/Projects/e4xu/src/tests/TestProto.as:75]
//				at tests::TestProto()[/home/wvxvw/Projects/e4xu/src/tests/TestProto.as:11]
				trace(error.getStackTrace());
			}
			xml = <öhow-about-this />;
			// <öhow-about-this/>
			trace(xml.toXMLString());
			xml = <text> la-la-la, &#x7B; moooaha-ha! &#x7D; ke-ke-ke </text>;
			// <text>la-la-la, { moooaha-ha! } ke-ke-ke</text>
			trace(xml.toXMLString());
		}
	}
}