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Fix void tags grouping logic (dotnet/aspnetcore-tooling#110) 

* Fix void tags grouping logic

* Handle bang in tag name
\n\nCommit migrated from 2c41ae9550
This commit is contained in:
Ajay Bhargav Baaskaran 2019-01-09 11:41:10 -08:00 committed by GitHub
parent 14afcc3eaf
commit b449a44440
1 changed files with 45 additions and 4 deletions
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49
src/Razor/Microsoft.AspNetCore.Razor.Language/src/Legacy/HtmlMarkupParser.cs
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@ -71,9 +71,22 @@ namespace Microsoft.AspNetCore.Razor.Language.Legacy
while (_tagTracker.Count > 0)
{
var tracker = _tagTracker.Pop();
var element = SyntaxFactory.MarkupElement(tracker.StartTag, builder.Consume(), endTag: null);
builder.AddRange(tracker.PreviousNodes);
builder.Add(element);
if (IsVoidElement(tracker.TagName))
{
// We were tracking a void element but we reached the end of the document without finding a matching end tag.
// So, close that element and move its content to its parent.
var children = builder.Consume();
var voidElement = SyntaxFactory.MarkupElement(tracker.StartTag, EmptySyntaxList, endTag: null);
builder.AddRange(tracker.PreviousNodes);
builder.Add(voidElement);
builder.AddRange(children);
}
else
{
var element = SyntaxFactory.MarkupElement(tracker.StartTag, builder.Consume(), endTag: null);
builder.AddRange(tracker.PreviousNodes);
builder.Add(element);
}
}
var markup = SyntaxFactory.MarkupBlock(builder.ToList());
@ -533,6 +546,19 @@ namespace Microsoft.AspNetCore.Razor.Language.Legacy
private bool TryRecoverStartTag(in SyntaxListBuilder<RazorSyntaxNode> builder, string endTagName, MarkupEndTagSyntax endTag)
{
// First check if the tag we're tracking is a void tag. If so, we need to close it out before moving on.
while (_tagTracker.Count > 0 &&
!string.Equals(CurrentStartTagName, endTagName, StringComparison.OrdinalIgnoreCase) &&
IsVoidElement(CurrentStartTagName))
{
var tracker = _tagTracker.Pop();
var children = builder.Consume();
var voidElement = SyntaxFactory.MarkupElement(tracker.StartTag, EmptySyntaxList, endTag: null);
builder.AddRange(tracker.PreviousNodes);
builder.Add(voidElement);
builder.AddRange(children);
}
var malformedTagCount = 0;
foreach (var tag in _tagTracker)
{
@ -647,7 +673,7 @@ namespace Microsoft.AspNetCore.Razor.Language.Legacy
// Completed tags in code blocks have no accepted characters.
SpanContext.EditHandler.AcceptedCharacters = AcceptedCharactersInternal.None;
if (tagMode != MarkupTagMode.SelfClosing && ParserHelpers.VoidElements.Contains(tagName))
if (tagMode != MarkupTagMode.SelfClosing && IsVoidElement(tagName))
{
// This is a void element.
// Technically, void elements like "meta" are not allowed to have end tags. Just in case they do,
@ -2114,6 +2140,21 @@ namespace Microsoft.AspNetCore.Razor.Language.Legacy
return last.Green;
}
private static bool IsVoidElement(string tagName)
{
if (string.IsNullOrEmpty(tagName))
{
return false;
}
if (tagName.StartsWith("!"))
{
tagName = tagName.Substring(1);
}
return ParserHelpers.VoidElements.Contains(tagName);
}
private enum ParseMode
{
Markup,