protected virtual int GetLineExpectedIndent(ITextSnapshotLine line, XmlBackgroundParser parser, int indentSize)
{
//create a lightweight tree parser, which will actually close nodes
var spineParser = parser.GetSpineParser(line.Start);
var startNodes = spineParser.Spine.ToList();
var startState = spineParser.CurrentState;
startNodes.Reverse();
//advance the parser to the end of the line
for (int i = line.Start.Position; i < line.End.Position; i++)
{
spineParser.Push(line.Snapshot[i]);
}
var endNodes = spineParser.Spine.ToList();
endNodes.Reverse();
//count the number of elements in the stack at the start of the line
//which were not closed by the end of the line
int depth = 0;
//first node is the xdocument, skip it
for (int i = 1; i < startNodes.Count; i++)
{
if (i == endNodes.Count || !(startNodes[i] is XElement) || startNodes[i] != endNodes[i])
{
break;
}
depth++;
}
//if inside a tag state, indent a level further
while (startState != null)
{
if (startState is XmlTagState)
{
depth++;
}
startState = startState.Parent;
}
int indent = indentSize * depth;
return(indent);
}
protected virtual int GetLineExpectedIndent(ITextSnapshotLine line, XmlBackgroundParser parser, int indentSize)
{
var snapshot = line.Snapshot;
//create a lightweight tree parser, which will actually close nodes
var spineParser = parser.GetSpineParser(line.Start);
var startNodes = spineParser.Spine.ToList();
var startState = spineParser.CurrentState;
startNodes.Reverse();
//advance the parser to the end of the line
for (int i = line.Start.Position; i < line.End.Position; i++)
{
spineParser.Push(snapshot[i]);
}
var endNodes = spineParser.Spine.ToList();
endNodes.Reverse();
//count the number of elements in the stack at the start of the line
//which were not closed by the end of the line
int depth = 0;
//special case if the line starts with something else than a closing tag,
//treat it as content and don't take the remaining closing tags on the
//current line into account
bool startsWithClosingTag = false;
var firstNonWhitespacePosition = line.GetFirstNonWhitespacePosition();
if (firstNonWhitespacePosition is int first &&
line.End > first + 1 &&
snapshot[first] == '<' &&
snapshot[first + 1] == '/')
{
startsWithClosingTag = true;
}
//first node is the xdocument, skip it
for (int i = 1; i < startNodes.Count; i++)
{
if (!(startNodes[i] is XElement))
{
continue;
}
if (startsWithClosingTag)
{
if (i == endNodes.Count || startNodes[i] != endNodes[i])
{
break;
}
}
depth++;
}
//if inside a tag state, indent a level further
while (startState != null)
{
if (startState is XmlTagState)
{
depth++;
}
startState = startState.Parent;
}
int indent = indentSize * depth;
return(indent);
}