/// <summary>
/// Find the item that will contain all of the incremental parsing changes.
/// This never returns null.
/// </summary>
private IIncrementalParseItem GetIncrementalParseParent(int start, int length)
{
for (ComplexItem item = StyleSheet.ComplexItemFromRange(start, length); item != null; item = item.Parent)
{
if (item is IIncrementalParseItem)
{
return((IIncrementalParseItem)item);
}
}
// Could be typing in whitespace outside all items, so try using the root StyleSheet
return(StyleSheet);
}
public void HtmlComment_ParseTest()
{
string text1 = "<!-- foo#bar -->";
ITextProvider tp = new StringTextProvider(text1);
TokenStream tokens = Helpers.MakeTokenStream(tp);
// Parse "<!--"
{
HtmlComment hc = new HtmlComment();
Assert.IsTrue(hc.Parse(new ItemFactory(tp, null), tp, tokens));
Assert.AreEqual(1, hc.Children.Count);
Assert.AreEqual(CssTokenType.OpenHtmlComment, ((TokenItem)hc.Children[0]).TokenType);
}
// Parse "foo#bar"
{
Assert.AreEqual(CssTokenType.Identifier, tokens.Advance(1).TokenType);
Assert.AreEqual(CssTokenType.HashName, tokens.Advance(1).TokenType);
}
// Parse "-->"
{
HtmlComment hc = new HtmlComment();
Assert.IsTrue(hc.Parse(new ItemFactory(tp, null), tp, tokens));
Assert.AreEqual(1, hc.Children.Count);
Assert.AreEqual(CssTokenType.CloseHtmlComment, ((TokenItem)hc.Children[0]).TokenType);
}
string text2 = "<!-- @namespace foo \"www.foo.com\" -->";
CssParser parser = new CssParser();
StyleSheet sheet = parser.Parse(text2, true);
Assert.IsTrue(sheet.ComplexItemFromRange(14, 0) is NamespaceDirective);
Assert.IsTrue(sheet.ComplexItemFromRange(2, 0) is HtmlComment);
Assert.IsTrue(sheet.ComplexItemFromRange(35, 0) is HtmlComment);
}
/// <summary>
/// Inserts comments into the StyleSheet that were in the range of changed text
/// </summary>
private void InsertComments(IEnumerable <Comment> comments, IList <ParseItem> newChildren)
{
if (comments != null)
{
foreach (ParseItem comment in comments)
{
ComplexItem parent = StyleSheet.ComplexItemFromRange(comment.Start, comment.Length) ?? StyleSheet;
if (!(parent is Comment))
{
parent.InsertChildIntoSubtree(comment);
// Don't save the comment if its parent or itself is already in the list
bool alreadyAdded = false;
for (ParseItem commentParent = comment; commentParent != null; commentParent = commentParent.Parent)
{
if (newChildren.Contains(commentParent))
{
alreadyAdded = true;
break;
}
}
if (!alreadyAdded)
{
newChildren.Add(comment);
}
}
else // the comment is already in the tree, so we passed the reparsed text
{
Debug.Assert(parent.Start == comment.Start && parent.Length == comment.Length);
break;
}
}
}
}
public void ComplexItemFromRangeTest()
{
CssParser p = new CssParser();
StyleSheet s = p.Parse("@charset \"foo\"; .a { color: red; } moo boo", true);
Assert.IsNull(s.ComplexItemFromRange(0, 0));
Assert.IsTrue(s.ComplexItemFromRange(0, 2) is CharsetDirective);
Assert.AreSame(s, s.ComplexItemFromRange(16, 0));
Assert.IsTrue(s.ComplexItemFromRange(16, 4) is RuleSet);
Assert.IsTrue(s.ComplexItemFromRange(20, 0) is RuleBlock);
Assert.IsTrue(s.ComplexItemFromRange(20, 5) is RuleBlock);
Assert.IsTrue(s.ComplexItemFromRange(33, 1) is RuleBlock);
Assert.AreSame(s, s.ComplexItemFromRange(34, 0));
Assert.IsTrue(s.ComplexItemFromRange(s.Start, s.Length) is StyleSheet);
Assert.IsTrue(s.ComplexItemFromRange(s.AfterEnd - 1, 0) is ItemName);
Assert.IsTrue(s.ComplexItemFromRange(s.AfterEnd - 2, 1) is ItemName);
}
