private static XElement CreateMethodElement(InstrumentedMethod method, IEnumerable <InstrumentedSequence> instructions, HitsInfo hitsInfo)
{
var allLines = instructions
.SelectMany(i => i.GetLines())
.Distinct()
.Count();
var coveredLines = instructions
.Where(h => hitsInfo.WasHit(h.HitId))
.SelectMany(i => i.GetLines())
.Distinct()
.Count();
var allBranches = instructions
.SelectMany(i => i.Conditions)
.SelectMany(c => c.Branches)
.Count();
var coveredBranches = instructions
.SelectMany(i => i.Conditions)
.SelectMany(c => c.Branches)
.Where(b => hitsInfo.WasHit(b.HitId))
.Count();
var lineRate = allLines == 0 ? 1d : (double)coveredLines / (double)allLines;
var branchRate = allBranches == 0 ? 1d : (double)coveredBranches / (double)allBranches;
var openParametersIndex = method.FullName.IndexOf("(");
var signature = method.FullName.Substring(openParametersIndex);
return(new XElement(
XName.Get("method"),
new XAttribute(XName.Get("name"), method.Name),
new XAttribute(XName.Get("signature"), signature),
new XAttribute(XName.Get("line-rate"), lineRate),
new XAttribute(XName.Get("branch-rate"), branchRate),
new XAttribute(XName.Get("complexity"), 0),
CreateLinesElement(instructions, hitsInfo)
));
}
private void InstrumentInstructions(
InstrumentationContext context,
MethodDefinition methodDefinition,
InstrumentedAssembly instrumentedAssembly,
Dictionary <int, Instruction> instructionsByOffset,
ILProcessor ilProcessor,
VariableDefinition methodContextVariable,
InstrumentedMethod instrumentedMethod)
{
var hitInstructionReference = methodDefinition.Module.GetOrImportReference(hitInstructionMethodInfo);
foreach (var sequencePoint in methodDefinition.DebugInformation.SequencePoints)
{
var document = sequencePoint.Document;
if (document.FileHasChanged())
{
_logger.LogInformation("Ignoring modified file {file}", document.Url);
continue;
}
if (sequencePoint.IsHidden)
{
continue;
}
var documentUrl = sequencePoint.Document.Url;
var documentLines = _fileReader.ReadAllLines(new FileInfo(documentUrl));
var code = documentLines.ExtractCode(
sequencePoint.StartLine,
sequencePoint.EndLine,
sequencePoint.StartColumn,
sequencePoint.EndColumn);
if (code == null || code == "{" || code == "}")
{
continue;
}
var instruction = instructionsByOffset[sequencePoint.Offset];
// if the previous instruction is a Prefix instruction then this instruction MUST go with it.
// we cannot put an instruction between the two.
if (instruction.Previous != null && instruction.Previous.OpCode.OpCodeType == OpCodeType.Prefix)
{
continue;
}
if (!ilProcessor.Body.Instructions.Contains(instruction))
{
var methodFullName = $"{methodDefinition.DeclaringType.FullName}.{methodDefinition.Name}";
_logger.LogWarning("Skipping instruction because it was removed from method {method}", methodFullName);
continue;
}
var sourceRelativePath = GetSourceRelativePath(context, documentUrl);
var instructionId = ++context.InstructionId;
instrumentedAssembly.AddInstruction(sourceRelativePath, new InstrumentedInstruction
{
Id = instructionId,
StartLine = sequencePoint.StartLine,
EndLine = sequencePoint.EndLine,
StartColumn = sequencePoint.StartColumn,
EndColumn = sequencePoint.EndColumn,
Instruction = instruction.ToString(),
Method = instrumentedMethod,
Code = code
});
ilProcessor.InsertBefore(instruction, new[]
{
ilProcessor.Create(OpCodes.Ldloc, methodContextVariable),
ilProcessor.Create(OpCodes.Ldc_I4, instructionId),
ilProcessor.Create(OpCodes.Callvirt, hitInstructionReference)
}, true);
}
}
