Example #1
0
            public void AnalyzeMethod(SyntaxNodeAnalysisContext obj)
            {
                MethodDeclarationSyntax methodDeclarationSyntax = (MethodDeclarationSyntax)obj.Node;
                SyntaxNode body = methodDeclarationSyntax.Body;

                if (body == null)
                {
                    return;
                }

                if (_exceptions.Contains(methodDeclarationSyntax.Identifier.ValueText))
                {
                    return;
                }

                RollingTokenSet rollingTokenSet = new RollingTokenSet(_duplicateTokenThreshold);

                foreach (SyntaxToken token in body.DescendantTokens())
                {
                    // For every set of token_count contiguous tokens, create a hash and add it to a dictionary with some evidence.
                    (int hash, Evidence evidence) = rollingTokenSet.Add(new TokenInfo(token));

                    if (rollingTokenSet.IsFull())
                    {
                        Evidence existingEvidence = _library.TryAdd(hash, evidence);
                        if (existingEvidence != null)
                        {
                            Location location = evidence.LocationEnvelope.Contents();
                            Location existingEvidenceLocation = existingEvidence.LocationEnvelope.Contents();

                            // We found a duplicate, but if it's partially duplicated with itself, ignore it.
                            if (!location.SourceSpan.IntersectsWith(existingEvidenceLocation.SourceSpan))
                            {
                                string reference = ToPrettyReference(existingEvidenceLocation.GetLineSpan());
                                _diagnostics.Add(Diagnostic.Create(Rule, location, new List <Location>()
                                {
                                    existingEvidenceLocation
                                }, reference));

                                if (_generateExceptionsFile)
                                {
                                    File.AppendAllText(@"DuplicateCode.Allowed.GENERATED.txt", methodDeclarationSyntax.Identifier.ValueText + Environment.NewLine);
                                }

                                // Don't pile on.  Move on to the next method.
                                return;
                            }

                            // Don't pile on.  Move on to the next method.
                            return;
                        }
                    }
                }
            }
Example #2
0
            public void AnalyzeMethod(SyntaxNodeAnalysisContext obj)
            {
                try
                {
                    MethodDeclarationSyntax methodDeclarationSyntax = (MethodDeclarationSyntax)obj.Node;
                    SyntaxNode body = methodDeclarationSyntax.Body;
                    if (body == null)
                    {
                        return;
                    }

                    if (_exceptions.Contains(methodDeclarationSyntax.Identifier.ValueText))
                    {
                        return;
                    }

                    RollingTokenSet rollingTokenSet = new RollingTokenSet(_duplicateTokenThreshold);

                    foreach (SyntaxToken token in body.DescendantTokens())
                    {
                        GetShapeDetails(token);

                        // For every set of token_count contiguous tokens, create a hash and add it to a dictionary with some evidence.
                        (int hash, Evidence evidence) = rollingTokenSet.Add(new TokenInfo(token));

                        if (rollingTokenSet.IsFull())
                        {
                            Evidence existingEvidence = _library.TryAdd(hash, evidence);
                            if (existingEvidence != null)
                            {
                                Location location = evidence.LocationEnvelope.Contents();
                                Location existingEvidenceLocation = existingEvidence.LocationEnvelope.Contents();

                                // We found a duplicate, but if it's partially duplicated with itself, ignore it.
                                if (!location.SourceSpan.IntersectsWith(existingEvidenceLocation.SourceSpan))
                                {
                                    string shapeDetails = GetShapeDetails(token);
                                    string reference    = ToPrettyReference(existingEvidenceLocation.GetLineSpan());

                                    _diagnostics.Add(Diagnostic.Create(Rule, location, new List <Location>()
                                    {
                                        existingEvidenceLocation
                                    }, reference, shapeDetails));

                                    if (_generateExceptionsFile)
                                    {
                                        File.AppendAllText(@"DuplicateCode.Allowed.GENERATED.txt", methodDeclarationSyntax.Identifier.ValueText + Environment.NewLine);
                                    }

                                    // Don't pile on.  Move on to the next method.
                                    return;
                                }

                                // Don't pile on.  Move on to the next method.
                                return;
                            }
                        }
                    }
                }
                catch (Exception ex)
                {
                    string   result = string.Empty;
                    string[] lines  = ex.StackTrace.Split(new char[] { ':' }, StringSplitOptions.RemoveEmptyEntries);
                    foreach (string line in lines)
                    {
                        if (line.StartsWith("line") && line.Length >= 8)
                        {
                            result += line.Substring(0, 8);
                            result += " ";
                        }
                    }
                    if (string.IsNullOrWhiteSpace(result))
                    {
                        result = ex.StackTrace.Replace(Environment.NewLine, " ## ");
                    }
                    _diagnostics.Add(Diagnostic.Create(UnhandledExceptionRule, obj.Node.GetLocation(), result, ex.Message));
                }
            }