static void ResortImports(List <ImportStatement> importsToSort, ITextDocument editor, List <DAttribute> attributesNotToWrite, bool separatePackageRoots)
{
if (importsToSort.Count < 2)
{
return;
}
int firstOffset = int.MaxValue;
string indent = "";
// Remove all of them from the document; Memorize where the first import was
for (int i = importsToSort.Count - 1; i >= 0; i--)
{
var ss = importsToSort[i];
var ssLocation = ss.Location;
var ssEndLocation = ss.EndLocation;
DAttribute attr;
if (ss.Attributes != null && ss.Attributes.Length > 0)
{
attr = ss.Attributes.FirstOrDefault((e) => !attributesNotToWrite.Contains(e));
if (attr != null && attr.Location < ssLocation)
{
ssLocation = attr.Location;
}
attr = ss.Attributes.LastOrDefault((e) => !attributesNotToWrite.Contains(e));
if (attr != null && attr.EndLocation > ssEndLocation)
{
ssEndLocation = attr.EndLocation;
}
}
var l1 = editor.LocationToOffset(ssLocation.Line, ssLocation.Column);
var l2 = editor.LocationToOffset(ssEndLocation.Line, ssEndLocation.Column);
var n = editor.Length - 1;
// Remove indents and trailing semicolon.
for (char c; l1 > 0 && ((c = editor.GetCharAt(l1 - 1)) == ' ' || c == '\t'); l1--)
{
;
}
for (char c; l2 < n && ((c = editor.GetCharAt(l2 + 1)) == ' ' || c == '\t' || c == ';'); l2++)
{
;
}
for (char c; l2 < n && ((c = editor.GetCharAt(l2 + 1)) == '\n' || c == '\r'); l2++)
{
;
}
l1 = Math.Max(0, l1);
l2 = Math.Max(0, l2);
firstOffset = Math.Min(l1, firstOffset);
indent = editor.GetLineIndent(editor.OffsetToLineNumber(firstOffset));
editor.Remove(l1, l2 - l1);
}
// Sort
importsToSort.Sort(new ImportComparer());
// Write all imports beneath each other.
var eol = editor.EolMarker;
var sb = new StringBuilder();
ITypeDeclaration prevId = null;
foreach (var i in importsToSort)
{
sb.Append(indent);
if (i.Attributes != null)
{
foreach (var attr in i.Attributes)
{
if (attributesNotToWrite.Contains(attr))
{
continue;
}
sb.Append(attr.ToString()).Append(' ');
}
}
sb.Append(i.ToCode(false)).Append(";").Append(eol);
if (separatePackageRoots)
{
var iid = ImportComparer.ExtractPrimaryId(i);
if (prevId != null && iid != null &&
(iid.InnerDeclaration ?? iid).ToString(true) != (prevId.InnerDeclaration ?? prevId).ToString(true))
{
sb.Append(eol);
}
prevId = iid;
}
}
editor.Insert(firstOffset, sb.ToString());
}