public DocumentRange Translate(TreeTextRange range)
{
if (!range.IsValid() || !SourceFile.IsValid())
{
return(DocumentRange.InvalidRange);
}
var sector = FindSectorAtRange(range);
if (!sector.IsValid())
{
return(DocumentRange.InvalidRange);
}
// Let the included file handle the request
if (sector.Include != null)
{
return(sector.Include.DocumentRangeTranslator.Translate(range));
}
// The range is in the current document
// The includes that appear before do not contribute to document offset
int extraIncludeOffset = sector.PrecedingIncludeLength;
// Neither do the other includes in the tree
// (the ones that are included before the current file)
int extraRootOffset = FileLikeNode.GetTreeStartOffset().Offset;
var start = range.StartOffset - extraIncludeOffset - extraRootOffset;
var end = range.EndOffset - extraIncludeOffset - extraRootOffset;
var resultingTextRange = new TextRange(start.Offset, end.Offset);
resultingTextRange.AssertValid();
return(new DocumentRange(SourceFile.Document, resultingTextRange));
}
public TreeTextRange Translate(DocumentRange documentRange)
{
if (!documentRange.IsValid())
{
return(TreeTextRange.InvalidRange);
}
if (!SourceFile.IsValid())
{
return(TreeTextRange.InvalidRange);
}
if (!FileLikeNode.IsValid())
{
return(TreeTextRange.InvalidRange);
}
if (documentRange.Document != SourceFile.Document)
{
// That document might appear among the includes
var rangeFromIncludes = Includes
.Select(include => include.DocumentRangeTranslator.Translate(documentRange))
.Where(textRange => textRange.IsValid())
// Allow FirstOrDefault to return null
.Select <TreeTextRange, TreeTextRange?>(it => it)
.FirstOrDefault();
return(rangeFromIncludes ?? TreeTextRange.InvalidRange);
}
// The range is in the same document as the source file we are responsible for,
// so we have no choice but to handle the request ourselves
(int documentStartOffset, int documentEndOffset) = documentRange.TextRange;
var rootStartOffset = FileLikeNode.GetTreeStartOffset();
// No includes, tree and document are matching
if (!Includes.Any())
{
return(new TreeTextRange(rootStartOffset + documentStartOffset, rootStartOffset + documentEndOffset));
}
var treeStartOffset = Translate(documentStartOffset);
if (!treeStartOffset.IsValid())
{
return(TreeTextRange.InvalidRange);
}
return(TreeTextRange.FromLength(treeStartOffset, documentRange.Length));
}
