/// <summary>
/// Try to find the document location that belongs to the given method + offset.
/// </summary>
/// <returns>null, if not found. If we know the document, but the offset is marked to
/// have no source code attached (compiler generated), the returned position will
/// be marked as IsSpecial.</returns>
public SourceCodePosition FindSourceCode(MethodEntry method, int methodOffset, bool allowSpecial = true)
{
var locs = GetSourceCodePositions(method);
// perform a binary search
int idx = locs.FindLastIndexSmallerThanOrEqualTo(methodOffset, p => p.Position.MethodOffset);
if (idx != -1 && (allowSpecial || !locs[idx].IsSpecial))
{
return(locs[idx]);
}
if (allowSpecial && locs.Count > 0)
{
// this can only happen at the beginning of the method.
// forge a special location.
var pos = locs[0].Position;
var forgedPos = new DocumentPosition(pos.Start.Line, pos.Start.Column, pos.End.Line, pos.End.Column, pos.TypeId, pos.MethodId, DocumentPosition.SpecialOffset);
return(new SourceCodePosition(locs[0].Document, forgedPos));
}
return(null);
}
public SourceCodePosition(Document document, DocumentPosition position)
{
Document = document;
Position = position;
}
internal static SourceCodePosition Create(Document document, DocumentPosition position)
{
return(new SourceCodePosition(document, position));
}
/// <summary>
/// Try to find the document location that belongs to the given type, method + offset.
/// </summary>
public bool TryFindLocation(TypeEntry type, MethodEntry method, int methodOffset, out Document document, out DocumentPosition position)
{
document = null;
position = null;
foreach (var doc in documents.Values)
{
foreach (var docPos in doc.Positions)
{
if ((docPos.TypeId != type.Id) || (docPos.MethodId != method.Id))
{
continue;
}
// type and method matches
if ((docPos.MethodOffset <= methodOffset) || (position == null))
{
// Found possible result
if ((position == null) || (docPos.MethodOffset > position.MethodOffset))
{
// Found better result
document = doc;
position = docPos;
}
}
}
}
return(position != null);
}
