public static List createTags()

in wicket-tester/src/main/java/org/apache/wicket/util/tester/TagTester.java [467:565]
84 lines of code
19 McCabe index (conditional complexity)

	public static List<TagTester> createTags(String markup, Function<XmlTag, Boolean> accept, boolean stopAfterFirst)
	{
		List<TagTester> testers = new ArrayList<>();

		if ((Strings.isEmpty(markup) == false))
		{
			try
			{
				// remove the CDATA and
				// the id attribute of the component because it is often the same as the element's id
				markup = AJAX_COMPONENT_CDATA_OPEN.matcher(markup).replaceAll("<component>");
				markup = AJAX_COMPONENT_CDATA_CLOSE.matcher(markup).replaceAll("</component>");

				XmlPullParser parser = new XmlPullParser();
				parser.parse(markup);

				XmlTag openTag = null;
				XmlTag closeTag = null;

				// temporary Tag-Hierarchy after openTag
				Stack<XmlTag> stack = new Stack<>();

				while (true)
				{
					XmlTag xmlTag = parser.nextTag();
					if (xmlTag == null)
					{
						break;
					}
					
					if (openTag == null)
					{
						if (accept.apply(xmlTag))
						{
							if (xmlTag.isOpen())
							{
								openTag = xmlTag;
							}
							else if (xmlTag.isOpenClose())
							{
								openTag = xmlTag;
								closeTag = xmlTag;
							}
						}
					}
					else
					{
						if (xmlTag.isOpen() && !xmlTag.isOpenClose())
						{
							stack.push(xmlTag);
						}
						if (xmlTag.isClose())
						{
							XmlTag foundTag = findOpenTag(xmlTag, stack);
							if (foundTag == null)
							{
								if (xmlTag.getName().equals(openTag.getName()))
								{
									closeTag = xmlTag;
									closeTag.setOpenTag(openTag);
								}
								else if (requiresCloseTag(openTag.getName()) == false)
								{
									// no closeTag for current openTag (allowed)
									closeTag = openTag;
								}
								else
								{
									// no closeTag for current openTag (invalid structure)
									// thus reset state
									openTag = null;
									closeTag = null;
								}
							}
						}
					}

					if ((openTag != null) && (closeTag != null))
					{
						TagTester tester = new TagTester(parser, openTag, closeTag);
						testers.add(tester);
						openTag = null;
						closeTag = null;
					}

					if (stopAfterFirst && (closeTag != null))
					{
						break;
					}
				}
			}
			catch (Exception e)
			{
				throw new WicketRuntimeException(e);
			}
		}

		return testers;
	}