private static void AnalyzeCall(SyntaxNodeAnalysisContext context, ISymbol migratableAttributeType, ISymbol dataContractAttributeType, ISymbol dataMemberAttributeType)
{
var typeDecl = (TypeDeclarationSyntax)context.Node;
var semanticModel = context.SemanticModel;
var ct = context.CancellationToken;
var isMigratable = MigrationHashHelper.HasAttribute(typeDecl, migratableAttributeType, semanticModel, ct);
if (!isMigratable)
{
return;
}
if (dataContractAttributeType != null && dataMemberAttributeType != null)
{
var isDataContract = MigrationHashHelper.HasAttribute(typeDecl, dataContractAttributeType, semanticModel, ct);
var hasDataMember = MigrationHashHelper.GetDataMembers(typeDecl, ct, semanticModel, dataMemberAttributeType).Any();
if (isDataContract && hasDataMember)
{
return;
}
}
var diagnostic = Diagnostic.Create(Rule, typeDecl.GetLocation(), typeDecl.Identifier.ToString());
context.ReportDiagnostic(diagnostic);
}
private static void AnalyzeCall(SyntaxNodeAnalysisContext context, ISymbol migratableAttributeType)
{
var ct = context.CancellationToken;
var typeDeclaration = (TypeDeclarationSyntax)context.Node;
var attribute = MigrationHashHelper.GetAttribute(typeDeclaration, migratableAttributeType, context.SemanticModel, ct);
if (attribute == null)
{
return;
}
var typeSymbol = context.SemanticModel.GetDeclaredSymbol(typeDeclaration, ct);
var verifier = new MigrationMethodVerifier(CanAssign(context));
var migrationMethods = MigrationHashHelper.GetMigrationMethods(typeSymbol);
var invalidMethods = verifier.VerifyMigrationMethods(migrationMethods)
.Where(x => x.Result != VerificationResultEnum.Ok);
foreach (var x in invalidMethods)
{
var method = typeSymbol.GetMembers()
.First(sy => sy.Name == x.Method.Name);
Debug.Assert(method.Locations.Length == 1, "Method has multiple locations.");
var diagnostic = Diagnostic.Create(Rule, method.Locations[0], method.Name, typeSymbol.Name, x.Result);
context.ReportDiagnostic(diagnostic);
}
}
private static async Task <Document> FixMigrationHash(Document document, TypeDeclarationSyntax typeDecl, CancellationToken ct)
{
var semanticModel = await document.GetSemanticModelAsync(ct);
var newTypeDecl = MigrationHashHelper.UpdateMigrationHash(typeDecl, ct, semanticModel);
var root = await document.GetSyntaxRootAsync(ct);
var newRoot = root.ReplaceNode(typeDecl, newTypeDecl);
return(document.WithSyntaxRoot(newRoot));
}
private static async Task <Document> AddMigrationMethod(Document document, TypeDeclarationSyntax typeDecl, CancellationToken ct)
{
var semanticModel = await document.GetSemanticModelAsync(ct);
var typeSymbol = semanticModel.GetDeclaredSymbol(typeDecl, ct);
var latestMigrationMethod = MigrationHashHelper.GetMigrationMethods(typeSymbol).LastOrDefault();
var latestVersion = latestMigrationMethod?.ToVersion ?? 0;
var dataArgumentTypeName = latestMigrationMethod?.ReturnType.Name ?? "JToken";
var method = GetMigrationMethod(latestVersion + 1, dataArgumentTypeName, ct);
var typeDeclWithUpdatedMigrationHash = MigrationHashHelper.UpdateMigrationHash(typeDecl, ct, semanticModel);
var typeDeclWithAddedMigrationMethod = AddMember(typeDeclWithUpdatedMigrationHash, method);
var root = (CompilationUnitSyntax)await document.GetSyntaxRootAsync(ct);
var rootWithNewTypeDecl = root.ReplaceNode(typeDecl, typeDeclWithAddedMigrationMethod);
return(document.WithSyntaxRoot(rootWithNewTypeDecl));
}
private static void AnalyzeCall(SyntaxNodeAnalysisContext context, ISymbol migratableAttributeType, ISymbol dataMemberAttributeType)
{
var ct = context.CancellationToken;
var typeDeclaration = (TypeDeclarationSyntax)context.Node;
var attribute = MigrationHashHelper.GetAttribute(typeDeclaration, migratableAttributeType, context.SemanticModel, ct);
if (attribute == null)
{
return;
}
var attributeHash = GetAttributeHash(attribute, context.SemanticModel, ct);
var computedHash = MigrationHashHelper.GetMigrationHashFromType(typeDeclaration, ct, context.SemanticModel, dataMemberAttributeType);
if (attributeHash != computedHash)
{
var diagnostic = Diagnostic.Create(Rule, typeDeclaration.GetLocation(), typeDeclaration.Identifier.ToString(), computedHash, attributeHash);
context.ReportDiagnostic(diagnostic);
}
}
public void ShouldGetAllDataMembers()
{
var tree = SyntaxFactory.ParseSyntaxTree(@"using System.Runtime.Serialization;
public class A
{
public string PropertyA { get; }
[DataMember] public string PropertyB { get; }
public int FieldA { get; }
[DataMember] public int FieldB { get; }
}");
var compilation = CSharpCompilation.Create(
"MyCompilation",
syntaxTrees: new[] { tree },
references: new[]
{
MetadataReference.CreateFromFile(typeof(object).Assembly.Location),
MetadataReference.CreateFromFile(typeof(DataMemberAttribute).Assembly.Location)
});
var model = compilation.GetSemanticModel(tree);
var typeDecl = tree
.GetRoot()
.ChildNodes()
.OfType <TypeDeclarationSyntax>()
.Single();
var dataMemberAttributeType = compilation.GetTypeByMetadataName(Constants.DataMemberAttributeMetadataName);
var dataMembers = MigrationHashHelper.GetDataMembers(typeDecl, CancellationToken.None, model, dataMemberAttributeType);
dataMembers.Count.Should().Be(2);
dataMembers[0].Identifier.Should().Be("FieldB");
dataMembers[0].Type.Should().Be("int");
dataMembers[1].Identifier.Should().Be("PropertyB");
dataMembers[1].Type.Should().Be("string");
}
