private static void ValidateMap(List <AttributeSyntax> mapCandidates, Maps.Builder maps, Compilation compilation)
{
var mapAttributeSymbol = compilation.GetTypeByMetadataName(typeof(MapAttribute).FullName);
foreach (var candidateAttributeNode in mapCandidates)
{
var attributeSymbol = compilation.GetSemanticModel(candidateAttributeNode.SyntaxTree)
.GetSymbolInfo(candidateAttributeNode).Symbol !.ContainingSymbol;
if (attributeSymbol.Equals(mapAttributeSymbol, SymbolEqualityComparer.Default))
{
var attributeData = compilation.Assembly.GetAttributes().Single(
_ => _.ApplicationSyntaxReference !.GetSyntax() == candidateAttributeNode);
var sourceType = (INamedTypeSymbol)attributeData.ConstructorArguments[0].Value !;
var destinationType = (INamedTypeSymbol)attributeData.ConstructorArguments[1].Value !;
MappingInformation.ValidatePairs(candidateAttributeNode, sourceType, destinationType, maps);
}
}
}
private static void ValidatePairs(SyntaxNode currentNode, INamedTypeSymbol source, INamedTypeSymbol destination,
Maps.Builder maps)
{
var key = (source, destination);
if (maps.ContainsKey(key))
{
var diagnostics = maps[key].diagnostics.ToList();
diagnostics.Add(DuplicatedAttributeDiagnostic.Create(currentNode, maps[key].node));
maps[key] = (diagnostics.ToImmutableArray(), maps[key].node, maps[key].maps);
}
else
{
var diagnostics = ImmutableArray.CreateBuilder <Diagnostic>();
if (!destination.Constructors.Any(_ => _.DeclaredAccessibility == Accessibility.Public && _.Parameters.Length == 0))
{
diagnostics.Add(NoArgumentConstructorDiagnostic.Create(currentNode));
}
var propertyMaps = ImmutableArray.CreateBuilder <string>();
var destinationProperties = destination.GetMembers().OfType <IPropertySymbol>()
.Where(_ => _.SetMethod is not null &&
(_.SetMethod.DeclaredAccessibility == Accessibility.Public ||
(destination.ContainingAssembly.ExposesInternalsTo(source.ContainingAssembly) && _.SetMethod.DeclaredAccessibility == Accessibility.Friend)))
.ToList();
foreach (var sourceProperty in source.GetMembers().OfType <IPropertySymbol>()
.Where(_ => _.GetMethod is not null &&
(_.GetMethod.DeclaredAccessibility == Accessibility.Public ||
(source.ContainingAssembly.ExposesInternalsTo(destination.ContainingAssembly) && _.GetMethod.DeclaredAccessibility == Accessibility.Friend))))
{
var destinationProperty = destinationProperties.FirstOrDefault(
_ => _.Name == sourceProperty.Name &&
_.Type.Equals(sourceProperty.Type, SymbolEqualityComparer.Default) &&
(sourceProperty.NullableAnnotation != NullableAnnotation.Annotated ||
sourceProperty.NullableAnnotation == NullableAnnotation.Annotated && _.NullableAnnotation == NullableAnnotation.Annotated));
if (destinationProperty is not null)
{
propertyMaps.Add($"{destinationProperty.Name} = self.{sourceProperty.Name},");
destinationProperties.Remove(destinationProperty);
}
else
{
diagnostics.Add(NoMatchDiagnostic.Create(sourceProperty, "source", source));
}
}
foreach (var remainingDestinationProperty in destinationProperties)
{
diagnostics.Add(NoMatchDiagnostic.Create(remainingDestinationProperty, "destination", destination));
}
if (propertyMaps.Count == 0)
{
diagnostics.Add(NoPropertyMapsFoundDiagnostic.Create(currentNode));
}
maps.Add((source, destination), (diagnostics.ToImmutable(), currentNode, propertyMaps.ToImmutable()));
}
}
private static void ValidateMapTo(List <TypeDeclarationSyntax> mapToCandidates, Maps.Builder maps, Compilation compilation)
{
var mapToAttributeSymbol = compilation.GetTypeByMetadataName(typeof(MapToAttribute).FullName);
foreach (var candidateTypeNode in mapToCandidates)
{
var model = compilation.GetSemanticModel(candidateTypeNode.SyntaxTree);
var sourceType = model.GetDeclaredSymbol(candidateTypeNode) as INamedTypeSymbol;
if (sourceType is not null)
{
foreach (var mappingAttribute in sourceType.GetAttributes().Where(
_ => _.AttributeClass !.Equals(mapToAttributeSymbol, SymbolEqualityComparer.Default)))
{
var destinationType = (INamedTypeSymbol)mappingAttribute.ConstructorArguments[0].Value !;
MappingInformation.ValidatePairs(mappingAttribute.ApplicationSyntaxReference !.GetSyntax(),
sourceType, destinationType, maps);
}
}
}
}