protected virtual void ResolveMultipleInheritanceMembers(CodeTypeDeclaration generatedType, HashSet <CodeTypeMember> shadows, CodeConstructor constructor)
{
Func <CodeTypeDeclaration, IEnumerable <CodeTypeDeclaration> > getBaseTypes =
type => {
var interfaceType = CodeDomHelper.GetOrCreateUserItem <CodeTypeDeclaration>(type, CodeDomHelper.InterfaceKey);
if (interfaceType == null)
{
interfaceType = type;
}
return(interfaceType.BaseTypes.Cast <CodeTypeReference>().Select(r => r.GetTypeForReference()).Where(c => c != null));
};
var layering = Layering <CodeTypeDeclaration> .CreateLayers(generatedType, getBaseTypes);
CodeTypeDeclaration implBaseType = FindBaseClassAndCreateShadows(generatedType, shadows, layering);
IEnumerable <CodeTypeDeclaration> inheritedBaseClasses;
if (implBaseType != null)
{
inheritedBaseClasses = implBaseType.Closure(getBaseTypes);
var implementationRef = new CodeTypeReference();
implementationRef.BaseType = implBaseType.Name;
var n = implBaseType.GetReferenceForType().Namespace();
if (n != null && n.EndsWith(implBaseType.Name))
{
implementationRef.BaseType = n + "." + implBaseType.Name;
}
else
{
implementationRef.SetNamespace(n);
}
generatedType.BaseTypes.Insert(0, implementationRef);
}
else
{
inheritedBaseClasses = Enumerable.Empty <CodeTypeDeclaration>();
AddImplementationBaseClass(generatedType);
}
for (int i = layering.Count - 1; i >= 0; i--)
{
foreach (var baseType in layering[i])
{
if (!inheritedBaseClasses.Contains(baseType) &&
baseType != generatedType &&
ShouldContainMembers(generatedType, baseType.GetReferenceForType()))
{
var dependent = baseType.DependentMembers(false);
if (dependent != null)
{
foreach (var inheritedMember in dependent)
{
RecursivelyAddDependentMembers(generatedType.Members, constructor.Statements, inheritedMember, shadows);
}
}
}
}
}
}
/// <summary>
/// Initializes the generated type for the NMeta extension
/// </summary>
/// <param name="input">The NMeta extension</param>
/// <param name="generatedType">The generated type for the extension</param>
/// <param name="context">The transformation context</param>
public override void Transform(IExtension input, CodeTypeDeclaration generatedType, ITransformationContext context)
{
SetTypeReferenceForMappedType(input, generatedType.GetReferenceForType());
base.Transform(input, generatedType, context);
generatedType.IsClass = true;
generatedType.BaseTypes.Add(new CodeTypeReference(typeof(ModelElementExtension <,>).Name, CreateReference(input.AdornedClass, true, context), generatedType.GetReferenceForType()));
generatedType.WriteDocumentation(input.Summary ?? string.Format("The {0} extension", input.Name), input.Remarks);
CreateFromMethod(input, generatedType, context);
CreateGetExtension(input, generatedType, context);
}
/// <summary>
/// Creates the constructor for the extension
/// </summary>
/// <param name="input">The NMeta extension</param>
/// <param name="generatedType">The generated type declaration for the extension</param>
/// <param name="context">The transformation context</param>
protected virtual void CreateConstructor(IExtension input, CodeTypeDeclaration generatedType, ITransformationContext context)
{
var classRef = CreateReference(input.AdornedClass, true, context);
var constructor = CodeDomHelper.GetOrCreateDefaultConstructor(generatedType, () => new CodeConstructor());
constructor.Attributes = MemberAttributes.Public;
constructor.ReturnType = generatedType.GetReferenceForType();
constructor.Parameters.Add(new CodeParameterDeclarationExpression(classRef, "parent"));
constructor.BaseConstructorArgs.Add(new CodeArgumentReferenceExpression("parent"));
constructor.WriteDocumentation("Creates a new extension instance for the given parent", null, new Dictionary <string, string>()
{
{ "parent", "The parent model element" }
});
if (!generatedType.Members.Contains(constructor))
{
generatedType.Members.Add(constructor);
}
}
/// <summary>
/// Gets called when the given type is added to the output namespace, e.g. to prevent name conflicts
/// </summary>
/// <param name="type"></param>
private void AddType(CodeNamespace ns, CodeTypeDeclaration type)
{
var name = CreateNewValidName(ns, type.Name);
var typeRef = type.GetReferenceForType();
var isSelfPointing = false;
if (typeRef != null && typeRef.UserData.Contains(CodeDomHelper.NamespaceKey))
{
isSelfPointing = typeRef.BaseType == type.Name;
if (CodeDomHelper.Namespace(typeRef) == null)
{
CodeDomHelper.SetNamespace(typeRef, ns.Name);
}
}
if (name != type.Name)
{
type.Name = name;
if (isSelfPointing)
{
typeRef.BaseType = name;
}
}
ns.Types.Add(type);
}
/// <summary>
/// Initializes the generated type declaration
/// </summary>
/// <param name="input">The input model element</param>
/// <param name="generatedType">The generated class declaration</param>
/// <param name="context">The transformation context</param>
/// <remarks>Can be overridden to refine code generation</remarks>
public override void Transform(T input, CodeTypeDeclaration generatedType, ITransformationContext context)
{
HashSet <CodeTypeMember> shadows;
var ownShadows = generatedType.Shadows(false);
if (ownShadows != null)
{
shadows = new HashSet <CodeTypeMember>(ownShadows);
}
else
{
shadows = new HashSet <CodeTypeMember>();
}
var constructor = CodeDomHelper.GetOrCreateDefaultConstructor(generatedType, () => new CodeConstructor()
{
Attributes = MemberAttributes.Public
});
var dependends = generatedType.DependentMembers(false);
if (dependends != null)
{
foreach (var member in dependends)
{
RecursivelyAddDependentMembers(generatedType.Members, constructor.Statements, member, shadows);
}
}
var interfaceDecl = CreateSeparatePublicInterface(input, generatedType);
if (interfaceDecl != null)
{
CodeDomHelper.SetUserItem(generatedType, CodeDomHelper.InterfaceKey, interfaceDecl);
var dependentTypes = CodeDomHelper.DependentTypes(generatedType, true);
dependentTypes.Add(interfaceDecl);
var typeReference = generatedType.GetReferenceForType();
typeReference.BaseType = interfaceDecl.Name;
CreateInterfaceMembers(generatedType, interfaceDecl);
for (int i = generatedType.BaseTypes.Count - 1; i >= 0; i--)
{
var baseTypeRef = generatedType.BaseTypes[i];
var baseType = CodeDomHelper.GetOrCreateUserItem <CodeTypeDeclaration>(baseTypeRef, CodeDomHelper.ClassKey);
if (baseType == null)
{
continue;
}
interfaceDecl.BaseTypes.Add(baseTypeRef);
generatedType.BaseTypes.RemoveAt(i);
}
generatedType.BaseTypes.Add(typeReference);
ResolveMultipleInheritanceMembers(generatedType, shadows, constructor);
}
if (constructor.Statements.Count > 0)
{
CodeDomHelper.SetUserItem(generatedType, CodeDomHelper.ConstructorKey, constructor);
generatedType.Members.Add(constructor);
}
}
protected virtual void ResolveMultipleInheritanceMembers(CodeTypeDeclaration generatedType, HashSet <CodeTypeMember> shadows, CodeConstructor constructor)
{
var allClasses = generatedType.Closure(GetBaseClasses);
var layering = Layering <CodeTypeDeclaration> .CreateLayers(generatedType, c => Edges(c, allClasses));
CodeTypeDeclaration implBaseType = null;
int layerIndex;
for (layerIndex = layering.Count - 1; layerIndex >= 0; layerIndex--)
{
var layer = layering[layerIndex];
if (layer.Count == 1 && layer.First() != generatedType && !shadows.IntersectsWith(AllFeatures(layer.First())))
{
implBaseType = layer.First();
break;
}
foreach (var cl in layer)
{
shadows.UnionWith(Refinements(cl));
}
}
IEnumerable <CodeTypeDeclaration> inheritedBaseClasses;
if (implBaseType != null)
{
inheritedBaseClasses = layering.Take(layerIndex + 1).SelectMany(s => s);
var implementationRef = new CodeTypeReference();
implementationRef.BaseType = implBaseType.Name;
var n = implBaseType.GetReferenceForType().Namespace();
if (n != null && n.EndsWith(implBaseType.Name))
{
implementationRef.BaseType = n + "." + implBaseType.Name;
}
else
{
implementationRef.SetNamespace(n);
}
generatedType.BaseTypes.Insert(0, implementationRef);
}
else
{
inheritedBaseClasses = Enumerable.Empty <CodeTypeDeclaration>();
AddImplementationBaseClass(generatedType);
}
CodeDomHelper.SetUserItem(generatedType, CodeDomHelper.BaseClassesKey, inheritedBaseClasses);
for (int i = layerIndex + 1; i < layering.Count; i++)
{
foreach (var baseType in layering[i])
{
if (baseType != generatedType)
{
var dependent = baseType.DependentMembers(false);
if (dependent != null)
{
foreach (var inheritedMember in dependent)
{
RecursivelyAddDependentMembers(generatedType.Members, constructor.Statements, inheritedMember, shadows);
}
}
}
}
}
}
private void GenerateTypeConverter(CodeTypeDeclaration generatedType, Dictionary <ILiteral, string> fieldNames)
{
var dependents = generatedType.DependentTypes(true);
if (dependents.Any(c => c.Name == generatedType.Name + "Converter") ||
fieldNames.All(field => field.Value == field.Key.Name))
{
return;
}
var typeConverter = new CodeTypeDeclaration(generatedType.Name + "Converter");
typeConverter.BaseTypes.Add(typeof(TypeConverter).ToTypeReference());
var stringTypeRef = new CodeTypeOfExpression(typeof(string));
var canConvertFromMethod = new CodeMemberMethod
{
Name = "CanConvertFrom",
Attributes = MemberAttributes.Public | MemberAttributes.Override,
ReturnType = new CodeTypeReference(typeof(bool))
};
canConvertFromMethod.Parameters.Add(new CodeParameterDeclarationExpression(typeof(ITypeDescriptorContext).ToTypeReference(), "context"));
canConvertFromMethod.Parameters.Add(new CodeParameterDeclarationExpression(typeof(System.Type).ToTypeReference(), "sourceType"));
var sourceTypeRef = new CodeArgumentReferenceExpression("sourceType");
canConvertFromMethod.Statements.Add(new CodeMethodReturnStatement(new CodeBinaryOperatorExpression(sourceTypeRef, CodeBinaryOperatorType.IdentityEquality, stringTypeRef)));
typeConverter.Members.Add(canConvertFromMethod);
var canConvertTo = new CodeMemberMethod
{
Name = "CanConvertTo",
Attributes = MemberAttributes.Public | MemberAttributes.Override,
ReturnType = new CodeTypeReference(typeof(bool))
};
canConvertTo.Parameters.Add(new CodeParameterDeclarationExpression(typeof(ITypeDescriptorContext).ToTypeReference(), "context"));
canConvertTo.Parameters.Add(new CodeParameterDeclarationExpression(typeof(System.Type), "destinationType"));
var destinationTypeRef = new CodeArgumentReferenceExpression("destinationType");
canConvertTo.Statements.Add(new CodeMethodReturnStatement(new CodeBinaryOperatorExpression(destinationTypeRef, CodeBinaryOperatorType.IdentityEquality, stringTypeRef)));
typeConverter.Members.Add(canConvertTo);
var typeRef = generatedType.GetReferenceForType();
var typeExpression = new CodeTypeReferenceExpression(typeRef);
var convertFrom = new CodeMemberMethod
{
Name = "ConvertFrom",
Attributes = MemberAttributes.Public | MemberAttributes.Override,
ReturnType = new CodeTypeReference(typeof(object))
};
convertFrom.Parameters.Add(new CodeParameterDeclarationExpression(typeof(ITypeDescriptorContext).ToTypeReference(), "context"));
convertFrom.Parameters.Add(new CodeParameterDeclarationExpression(typeof(CultureInfo).ToTypeReference(), "culture"));
convertFrom.Parameters.Add(new CodeParameterDeclarationExpression(typeof(object), "value"));
var valueRef = new CodeArgumentReferenceExpression("value");
var nullRef = new CodePrimitiveExpression();
convertFrom.Statements.Add(new CodeConditionStatement(new CodeBinaryOperatorExpression(valueRef, CodeBinaryOperatorType.IdentityEquality, nullRef),
new CodeMethodReturnStatement(new CodeDefaultValueExpression(typeRef))));
var valueString = new CodeVariableDeclarationStatement(typeof(string), "valueString", new CodeMethodInvokeExpression(valueRef, "ToString"));
convertFrom.Statements.Add(valueString);
var valueStringRef = new CodeVariableReferenceExpression(valueString.Name);
foreach (var field in fieldNames)
{
convertFrom.Statements.Add(new CodeConditionStatement(new CodeBinaryOperatorExpression(valueStringRef, CodeBinaryOperatorType.ValueEquality, new CodePrimitiveExpression(field.Key.Name)),
new CodeMethodReturnStatement(new CodeFieldReferenceExpression(typeExpression, field.Value))));
}
convertFrom.Statements.Add(new CodeMethodReturnStatement(new CodeDefaultValueExpression(typeRef)));
typeConverter.Members.Add(convertFrom);
var convertTo = new CodeMemberMethod
{
Name = "ConvertTo",
Attributes = MemberAttributes.Public | MemberAttributes.Override,
ReturnType = new CodeTypeReference(typeof(object))
};
convertTo.Parameters.Add(new CodeParameterDeclarationExpression(typeof(ITypeDescriptorContext).ToTypeReference(), "context"));
convertTo.Parameters.Add(new CodeParameterDeclarationExpression(typeof(CultureInfo).ToTypeReference(), "culture"));
convertTo.Parameters.Add(new CodeParameterDeclarationExpression(typeof(object), "value"));
convertTo.Parameters.Add(new CodeParameterDeclarationExpression(typeof(System.Type).ToTypeReference(), "destinationType"));
convertTo.Statements.Add(new CodeConditionStatement(new CodeBinaryOperatorExpression(valueRef, CodeBinaryOperatorType.IdentityEquality, nullRef),
new CodeMethodReturnStatement(nullRef)));
var valueCasted = new CodeVariableDeclarationStatement(typeRef, "valueCasted", new CodeCastExpression(typeRef, valueRef));
convertTo.Statements.Add(valueCasted);
var valueCastedRef = new CodeVariableReferenceExpression(valueCasted.Name);
foreach (var field in fieldNames)
{
convertTo.Statements.Add(new CodeConditionStatement(new CodeBinaryOperatorExpression(valueCastedRef, CodeBinaryOperatorType.ValueEquality, new CodeFieldReferenceExpression(typeExpression, field.Value)),
new CodeMethodReturnStatement(new CodePrimitiveExpression(field.Key.Name))));
}
convertTo.ThrowException <ArgumentOutOfRangeException>("value");
typeConverter.Members.Add(convertTo);
generatedType.AddAttribute(typeof(TypeConverterAttribute), new CodeTypeOfExpression(typeConverter.Name));
dependents.Add(typeConverter);
}