/// <summary>
/// Calculate number of fixed bugs were fixed in revision or before it.
/// </summary>
/// <param name="code"></param>
/// <param name="revision"></param>
/// <returns></returns>
public static int CalculateNumberOfDefects(this CodeBlockSelectionExpression code, string revision)
{
return(code.ModifiedBy()
.Modifications().ContainCodeBlocks()
.Commits().TillRevision(revision).ContainModifications()
.BugFixes().InCommits().Count());
}
public static double CalculateDefectCodeSize(this CodeBlockSelectionExpression code, string revision)
{
return(-code
.Commits().TillRevision(revision)
.Modifications().InCommits()
.CodeBlocks().Again().ModifiedBy().InModifications().InBugFixes().CalculateLOC());
}
public static IDictionary <int, double> CalculateRemainingCodeSize(this CodeBlockSelectionExpression code, string revision)
{
Dictionary <int, double> remainingCode = new Dictionary <int, double>();
foreach (var codeByAddedCode in (
from acb in code
join dcb in
(
from cb in code.Queryable <CodeBlock>()
join m in code.Queryable <Modification>() on cb.ModificationID equals m.ID
join c in code.Queryable <Commit>() on m.CommitID equals c.ID
let revisionOrderedNumber = code.Queryable <Commit>()
.Single(x => x.Revision == revision)
.OrderedNumber
where
c.OrderedNumber <= revisionOrderedNumber
select cb
) on acb.ID equals dcb.TargetCodeBlockID into dcbj
from dcb in dcbj.DefaultIfEmpty()
group dcb by acb into g
select new
{
AddedCodeID = g.Key.ID,
CodeSize = g.Key.Size + g.Sum(x => x == null ? 0 : x.Size)
}
).Where(x => x.CodeSize > 0))
{
remainingCode.Add(codeByAddedCode.AddedCodeID, codeByAddedCode.CodeSize);
}
return(remainingCode);
}
/// <summary>
/// Calculates alternative defect density for specified code.
/// Total code size is added LOC at the moment.
/// </summary>
/// <param name="code"></param>
/// <returns></returns>
public static double CalculateDefectDensity(this CodeBlockSelectionExpression code)
{
code = code.Added().Fixed();
return(CalculateDefectDensity(
code.CalculateLOC(),
code.CalculateNumberOfDefects()
));
}
/// <summary>
/// Calculates traditional defect density for specified code.
/// Total code size is LOC at the moment
/// (added code minus removed code).
/// </summary>
/// <param name="code">Code set to calc metric for.</param>
/// <returns>Defect density.</returns>
public static double CalculateTraditionalDefectDensity(this CodeBlockSelectionExpression code)
{
code = code.Added().Fixed();
return(CalculateDefectDensity(
code.CalculateLOC() + code.ModifiedBy().Deleted().CalculateLOC(),
code.CalculateNumberOfDefects()
));
}
/// <summary>
/// Calculate number of fixed bugs in specified code
/// </summary>
public static int CalculateNumberOfDefects(this CodeBlockSelectionExpression code)
{
return(code.ModifiedBy()
.Modifications()
.ContainCodeBlocks()
.Commits()
.ContainModifications()
.AreBugFixes()
.Count());
}
public static double CalculateDefectCodeSizePerDefect(this CodeBlockSelectionExpression code, string revision)
{
code = code.Fixed();
int numberOfDefects = code.CalculateNumberOfDefects(revision);
return(numberOfDefects > 0 ?
code.CalculateDefectCodeSize(revision) / numberOfDefects
:
0);
}
public static double CalculateDefectDensity(this CodeBlockSelectionExpression code, string revision)
{
code = code
.Commits().TillRevision(revision)
.CodeBlocks().Again().AddedInitiallyInCommits().Fixed();
return(CalculateDefectDensity(
code.CalculateLOC(),
code.CalculateNumberOfDefects(revision)
));
}
/// <summary>
/// Calculate traditional defect density for specified code
/// were added in revision or before it.
/// </summary>
public static double CalculateTraditionalDefectDensity(this CodeBlockSelectionExpression code, string revision)
{
code = code
.Commits().TillRevision(revision)
.CodeBlocks().Again().AddedInitiallyInCommits().Fixed();
return(CalculateDefectDensity(
code.CalculateNumberOfDefects(revision),
code.CalculateLOC()
+
code
.Modifications().InCommits()
.CodeBlocks().Again().ModifiedBy().Removed().InModifications().CalculateLOC()
));
}
public static double CalculateLOC(this CodeBlockSelectionExpression code)
{
return(code.Sum(x => (double?)x.Size) ?? 0);
}
public static double CalculateDefectCodeSize(this CodeBlockSelectionExpression code)
{
return(-code.ModifiedBy().InBugFixes().CalculateLOC());
}
