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> 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));
}