static SyntaxToken? FindToken(SyntaxNode node, int start, int end)
{
SyntaxNodeOrToken nort = node;
while (nort.IsNode)
{
node = nort.AsNode();
var startChild = node.ChildThatContainsPosition(start);
var endChild = node.ChildThatContainsPosition(end - 1);
if (startChild != endChild)
return null;
nort = startChild;
}
if (nort.IsToken)
return nort.AsToken();
return null;
}
