private static CharacterSpan GetCharacterSpan(LocationSpan locationSpan, CharacterPositionFinder finder)
{
var startPos = finder.GetCharacterPosition(locationSpan.Start);
var endPos = finder.GetCharacterPosition(locationSpan.End);
return(new CharacterSpan(startPos, endPos));
}
private static int AdjustBegin(Container parent, IList <ContainerOrTerminalNode> parentChildren, int indexInParentChildren, CharacterPositionFinder finder)
{
var node = parentChildren[indexInParentChildren];
int newStartPos;
var first = node == parentChildren.First();
if (first)
{
// first child, so adjust parent's header span and terminal node's line start and span begin
newStartPos = parent.HeaderSpan.End + 1;
var parentHeaderSpanEnd = finder.GetLineInfo(parent.HeaderSpan.End);
if (parentHeaderSpanEnd.LineNumber < node.LocationSpan.Start.LineNumber)
{
// different lines, so adjust line end of parent
newStartPos = AdjustHeaderToLineEnd(parent, finder);
}
}
else
{
var siblingBefore = parentChildren.ElementAt(indexInParentChildren - 1);
newStartPos = siblingBefore.GetTotalSpan().End + 1;
var siblingBeforeEndLineNumber = siblingBefore.LocationSpan.End.LineNumber;
if (siblingBeforeEndLineNumber != node.LocationSpan.Start.LineNumber)
{
newStartPos = finder.GetCharacterPosition(new LineInfo(siblingBeforeEndLineNumber + 1, 1));
}
}
return(newStartPos);
}
private static int AdjustParentFooter(Container parent, CharacterPositionFinder finder, LineInfo position)
{
var characterPosition = finder.GetCharacterPosition(position);
parent.FooterSpan = new CharacterSpan(characterPosition, parent.FooterSpan.End);
return(characterPosition - 1);
}
private static int AdjustHeaderEnd(Container node, CharacterPositionFinder finder, LineInfo position)
{
var characterPosition = finder.GetCharacterPosition(position);
node.HeaderSpan = new CharacterSpan(node.HeaderSpan.Start, characterPosition);
return(characterPosition + 1);
}
private static void AdjustNode(Container parent, IList <ContainerOrTerminalNode> parentChildren, int indexInParentChildren, CharacterPositionFinder finder)
{
var newStartPos = AdjustBegin(parent, parentChildren, indexInParentChildren, finder);
var newEndPos = AdjustEnd(parent, parentChildren, indexInParentChildren, finder);
// somewhere in the middle, so adjust only node span and location, as well as that from the siblings
var newStartLine = finder.GetLineInfo(newStartPos);
var newEndLine = finder.GetLineInfo(newEndPos);
var node = parentChildren[indexInParentChildren];
node.LocationSpan = new LocationSpan(newStartLine, newEndLine);
// now adjust terminal node's start position
if (node is Container c)
{
// only adjust child nodes that are no attributes
var children = c.Children.Where(IsNoAttribute).ToList();
if (children.Any())
{
c.HeaderSpan = new CharacterSpan(newStartPos, c.HeaderSpan.End);
for (var index = 0; index < children.Count; index++)
{
AdjustNode(c, children, index, finder);
}
c.FooterSpan = new CharacterSpan(c.FooterSpan.Start, newEndPos);
}
else
{
var headerEndLine = finder.GetLineInfo(c.HeaderSpan.End).LineNumber;
var footerStartLine = finder.GetLineInfo(c.FooterSpan.Start).LineNumber;
if (headerEndLine != footerStartLine)
{
var endPos = finder.GetLineLength(headerEndLine);
var headerEndPos = finder.GetCharacterPosition(headerEndLine, endPos);
c.HeaderSpan = new CharacterSpan(newStartPos, headerEndPos);
c.FooterSpan = new CharacterSpan(headerEndPos + 1, newEndPos);
}
else
{
c.HeaderSpan = new CharacterSpan(newStartPos, c.FooterSpan.Start - 1);
c.FooterSpan = new CharacterSpan(c.FooterSpan.Start, newEndPos);
}
}
}
else if (node is TerminalNode t)
{
t.Span = new CharacterSpan(newStartPos, newEndPos);
}
}
private static void ParseAttribute(XmlTextReader reader, Container parent, CharacterPositionFinder finder, IXmlFlavor flavor)
{
var attributeStartPos = new LineInfo(reader.LineNumber, reader.LinePosition);
var name = flavor.GetName(reader);
var type = flavor.GetType(reader);
// important call to be able to read the attribute value
reader.ReadAttributeValue();
var content = flavor.GetContent(reader);
var attributeEndPos = new LineInfo(reader.LineNumber, reader.LinePosition + content.Length);
var startPos = finder.GetCharacterPosition(attributeStartPos);
var endPos = finder.GetCharacterPosition(attributeEndPos);
var locationSpan = new LocationSpan(attributeStartPos, attributeEndPos);
var span = new CharacterSpan(startPos, endPos);
var child = AddTerminalNode(parent, type, name, content, locationSpan, span);
flavor.FinalAdjustAfterParsingComplete(child);
}
private static int AdjustEnd(Container parent, IList <ContainerOrTerminalNode> parentChildren, int indexInParentChildren, CharacterPositionFinder finder)
{
var node = parentChildren[indexInParentChildren];
int newEndPos;
var last = node == parentChildren.Last();
if (last)
{
// last child, so adjust parent's footer span and terminal node's end start and span end
newEndPos = parent.FooterSpan.Start - 1;
var parentFooterLocation = finder.GetLineInfo(parent.FooterSpan.Start);
if (parentFooterLocation.LineNumber != node.LocationSpan.End.LineNumber)
{
var startPosition = new LineInfo(parentFooterLocation.LineNumber, 1);
newEndPos = AdjustParentFooter(parent, finder, startPosition);
}
}
else
{
var siblingAfter = parentChildren.ElementAt(indexInParentChildren + 1);
newEndPos = siblingAfter.GetTotalSpan().Start - 1;
var startLine = siblingAfter.LocationSpan.Start.LineNumber;
if (startLine != node.LocationSpan.End.LineNumber)
{
var lineLength = finder.GetLineLength(node.LocationSpan.End);
var lineInfo = new LineInfo(node.LocationSpan.End.LineNumber, lineLength);
newEndPos = finder.GetCharacterPosition(lineInfo);
}
}
return(newEndPos);
}
public int GetCharacterPosition(int lineNumber, int linePosition) => _objectUnderTest.GetCharacterPosition(new LineInfo(lineNumber, linePosition));