/// <summary>
/// Create a singleton field used to store property information for the provided property.
/// </summary>
/// <param name="property">The property weaver.</param>
/// <returns></returns>
public Variable CreatePropertyInfo(PropertyEmitter property)
{
var parent = property.Parent.Target.IsNotPublic ? property.Parent : CreateTypeContainer(property.Parent.Target);
var type = property.Parent.Target;
var sta = (property.Target.GetMethod ?? property.Target.SetMethod).IsStatic;
var name = $"<{property.Target.Name}>k__PropertyInfo";
var existing = parent.GetField(name, Context.Finder.PropertyInfo, toStatic: true);
if (existing != null)
{
return(existing);
}
var field = parent.EmitField(name, Context.Finder.PropertyInfo, toStatic: true, toPublic: true);
var flags = BindingFlags.NonPublic | BindingFlags.Public | (sta ? BindingFlags.Static : BindingFlags.Instance);
var il = parent.GetStaticConstructor().GetIL();
il.Emit(Codes.Nop);
il.Emit(Codes.LoadToken(type.GetGeneric()));
il.Emit(Codes.InvokeStatic(Context.Finder.TypeGetTypeFromHandle));
il.Emit(Codes.String(property.Target.Name));
il.Emit(Codes.Int((int)flags));
il.Emit(Codes.Invoke(Context.Finder.TypeGetProperty));
il.Emit(Codes.Store(field));
return(field);
}
void EventEmit(IViewEvent viewEvent, List <MemberEmitter> ret)
{
string name = viewEvent.Name.Replace("/", "").Replace(".", "");
string genericType = (viewEvent.EventType() != null) ? $"<{GetTypeString(viewEvent.EventType())}>" : "";
PropertyEmitter property = new PropertyEmitter();
property.Name = "On" + name;
property.Type = "event Action" + genericType;
property.Summary = $"BindingPath : {viewEvent.Name}\nSender: {viewEvent.ToString()}";
property.Getter = new DelegateEmitter(w =>
{
w.WriteLine("add");
using (w.Bracket())
{
w.WriteLine($"m_Event.Subscribe{genericType}(\"{viewEvent.Name}\", value);");
}
});
property.Setter = new DelegateEmitter(w =>
{
w.WriteLine("remove");
using (w.Bracket())
{
w.WriteLine($"m_Event.Unsubscribe{genericType}(\"{viewEvent.Name}\", value);");
}
});
ret.Add(property);
}
/// <summary>
/// Weaves an implementation of a property against the provided type.
/// </summary>
/// <param name="emitter">The emitter.</param>
/// <param name="field">The attribute field.</param>
/// <param name="property">The property.</param>
/// <param name="interfaceType">The type of the interface.</param>
public void WeaveImplementedProperty(TypeEmitter emitter, Variable field, PropertyDefinition property, TypeDefinition interfaceType)
{
var emitted = emitter.EmitProperty(property.Name, property.PropertyType.Import(), toBackingField: true);
var implemented = field.Type.GetProperty(property.Name, property.PropertyType)?.Resolve();
if (implemented == null)
{
implemented = field.Type.GetProperty($"{interfaceType.FullName}.{property.Name}", returnType: property.PropertyType)?.Resolve();
if (implemented == null)
{
throw new MissingMemberException($"Cannot implement '{field.Type.FullName}' as it does not implement property '{property.Name}'");
}
}
var source = new PropertyEmitter(emitter, implemented);
if (source.HasGetter && !emitted.HasGetter)
{
var getter = emitted.GetGetter();
var il = getter.GetIL();
var propertyGet = property.GetMethod?.Import() ?? implemented.GetMethod.Import();
getter.Body.SimplifyMacros();
il.Emit(Codes.Nop);
il.Emit(Codes.ThisIf(field));
il.Emit(Codes.Cast(interfaceType));
il.Emit(Codes.Load(field));
il.Emit(Codes.Invoke(propertyGet.GetGeneric()));
il.Emit(Codes.Return);
getter.Body.OptimizeMacros();
getter.Body.InitLocals = true;
}
if (source.HasSetter && !emitted.HasSetter)
{
var setter = emitted.GetSetter();
var il = setter.GetIL();
var propertySet = property.SetMethod?.Import() ?? implemented.SetMethod.Import();
setter.Body.SimplifyMacros();
il.Emit(Codes.Nop);
il.Emit(Codes.ThisIf(field));
il.Emit(Codes.Load(field));
il.Emit(Codes.Arg(setter.Target.IsStatic ? 0 : 1));
il.Emit(Codes.Invoke(propertySet.GetGeneric()));
il.Emit(Codes.Return);
setter.Body.OptimizeMacros();
setter.Body.InitLocals = true;
}
}
/// <summary>
/// Create an attribute variable for a property definition.
/// </summary>
/// <param name="property">The property.</param>
/// <param name="get">The getter method.</param>
/// <param name="set">The setter method.</param>
/// <param name="attribute">The attribute.</param>
/// <param name="field">The optional field reference which was routed.</param>
/// <returns></returns>
public Variable[] CreateAttribute(PropertyEmitter property, MethodEmitter get, MethodEmitter set, CustomAttribute attribute, MemberReference field)
{
var method = get ?? set;
var sta = method.Target.IsStatic;
var options = attribute.GetAttribute(Context.Finder.CompilationOptionsAttribute);
var scope = options.GetProperty("Scope", notFound: AttributeScopeSingleton);
if (sta)
{
if (scope == AttributeScopeInstanced)
{
scope = AttributeScopeSingleton;
}
else if (scope == AttributeScopeMultiInstanced)
{
scope = AttributeScopeMultiSingleton;
}
}
var hasGet = attribute.HasInterface(Context.Finder.IPropertyGetInterceptor);
var hasSet = attribute.HasInterface(Context.Finder.IPropertySetInterceptor);
switch (scope)
{
case AttributeScopeAdhoc:
var adhocGet = hasGet && get != null?CreateAttributeAdhoc(get, attribute, property.Target) : null;
var adhocSet = hasSet && set != null?CreateAttributeAdhoc(set, attribute, property.Target) : null;
return(new[] { adhocGet, adhocSet });
case AttributeScopeInstanced:
var instanced = CreateAttributeInstanced(property.Parent, attribute, field ?? property.Target);
return(new[] { hasGet?instanced : null, hasSet ? instanced : null });
case AttributeScopeMultiInstanced:
var multi = CreateAttributeMultiInstanced(property.Parent, attribute, field ?? property.Target);
return(new[] { hasGet?multi : null, hasSet ? multi : null });
case AttributeScopeSingleton:
var singleton = CreateAttributeSingleton(property.Parent, attribute, field ?? property.Target);
return(new[] { hasGet?singleton : null, hasSet ? singleton : null });
case AttributeScopeMultiSingleton:
var multiSingleton = CreateAttributeMultiSingleton(property.Parent, attribute, field ?? property.Target);
return(new[] { hasGet?multiSingleton : null, hasSet ? multiSingleton : null });
default:
throw new NotSupportedException($"Cannot create attribute '{attribute.AttributeType.FullName}' with scope '{scope}'");
}
}
public void BuildPropertyEmitter(ClassEmitter classEmitter)
{
if (emitter != null)
{
throw new InvalidOperationException("Emitter is already created. It is illegal to invoke this method twice.");
}
emitter = classEmitter.CreateProperty(name, attributes, type, arguments);
foreach (var attribute in customAttributes)
{
emitter.DefineCustomAttribute(attribute);
}
}
void PropertyEmit(IBindable bindable, List <MemberEmitter> ret)
{
PropertyEmitter property = new PropertyEmitter();
string name = bindable.Path.Replace("/", "").Replace(".", "");
if (bindable is IViewEvent)
{
name += m_Config.EventValueSuffix;
}
string type = GetTypeString(bindable.BindType());
property.Name = name;
property.Type = type;
property.Setter = new WriteLineEmitter($"set {{ SetImpl<{type}>(\"{bindable.Path}\", value); }}");
property.Getter = new WriteLineEmitter($"get {{ return GetImpl<{type}>(\"{bindable.Path}\"); }}");
property.Summary = $"BindingPath : {bindable.Path}\nTarget: {bindable.ToString()}";
ret.Add(property);
}
public static PropertyDefinition ChangeToProperty(this FieldDefinition field)
{
var emitter = new PropertyEmitter(field.Name, field.FieldType, field.DeclaringType,
getterAttributes: MethodAttributes.Public | MethodAttributes.Virtual | MethodAttributes.HideBySig | MethodAttributes.NewSlot | MethodAttributes.SpecialName,
setterAttributes: MethodAttributes.Public | MethodAttributes.Virtual | MethodAttributes.HideBySig | MethodAttributes.NewSlot | MethodAttributes.SpecialName
);
field.Name = field.GetBackingName();
field.IsPublic = false;
field.IsPrivate = true;
field.CustomAttributes.Add(new CustomAttribute(
field.DeclaringType.Module.ImportReference(
typeof(System.Runtime.CompilerServices.CompilerGeneratedAttribute)
.GetConstructors()
.Single()
)
));
return(emitter.Emit());
}
void CommandEmit(IViewEvent viewEvent, List <MemberEmitter> ret)
{
string name = viewEvent.Name.Replace("/", "").Replace(".", "");
string genericType = (viewEvent.EventType() != null) ? $"<{GetTypeString(viewEvent.EventType())}>" : "";
FieldEmitter field = new FieldEmitter();
field.Accessibility = "private";
field.Name = "m_" + name + m_Config.CommandSuffix;
field.Type = "BindingCommand" + genericType;
ret.Add(field);
PropertyEmitter property = new PropertyEmitter();
property.Name = name + m_Config.CommandSuffix;
property.Type = "ICommand" + genericType;
property.Summary = $"BindingPath : {viewEvent.Name}\nSender: {viewEvent.ToString()}";
property.Getter = new DelegateEmitter(w =>
{
w.WriteLine("get");
using (w.Bracket())
{
w.WriteLine($"return m_{name}{m_Config.CommandSuffix}?.Get() ?? null;");
}
});
property.Setter = new DelegateEmitter(w =>
{
w.WriteLine("set");
using (w.Bracket())
{
w.WriteLine($"if (m_{name}{m_Config.CommandSuffix} == null) m_{name}{m_Config.CommandSuffix} = new BindingCommand{genericType}(\"{viewEvent.Name}\", this);");
w.WriteLine($"m_{name}{m_Config.CommandSuffix}.Set(value);");
}
});
ret.Add(property);
}
private static Type CreateProxyType(Type interfaceType)
{
if (!interfaceType.IsInterface) {
throw new ArgumentException("Only interfaces can be proxied", "interfaceType");
}
string name = string.Format("Proxy<{0}>", Regex.Replace(interfaceType.AssemblyQualifiedName ?? interfaceType.FullName ?? interfaceType.Name, @"[\s,]+", "_"));
List<Type> allInterfaces = new List<Type> {
interfaceType
};
allInterfaces.AddRange(interfaceType.GetInterfaces());
Debug.WriteLine(name, "Emitting proxy type");
TypeBuilder typeBuilder = proxyModule.DefineType(name, TypeAttributes.Class|TypeAttributes.Sealed|TypeAttributes.Public, typeof(ProxyBase), allInterfaces.ToArray());
ConstructorBuilder constructorBuilder = typeBuilder.DefineConstructor(MethodAttributes.Public, CallingConventions.Standard, Type.EmptyTypes);
ILGenerator ctorIl = constructorBuilder.GetILGenerator();
ctorIl.Emit(OpCodes.Ldarg_0);
ctorIl.Emit(OpCodes.Call, proxyBase_ctor);
ctorIl.Emit(OpCodes.Ret);
FieldBuilder propertyChangedField = null;
if (typeof(INotifyPropertyChanged).IsAssignableFrom(interfaceType)) {
propertyChangedField = typeBuilder.DefineField("PropertyChanged", typeof(PropertyChangedEventHandler), FieldAttributes.Private);
MethodBuilder addPropertyChangedMethod = typeBuilder.DefineMethod("add_PropertyChanged", MethodAttributes.Public|MethodAttributes.HideBySig|MethodAttributes.SpecialName|MethodAttributes.NewSlot|MethodAttributes.Virtual, typeof(void), new[] {typeof(PropertyChangedEventHandler)});
ILGenerator addIl = addPropertyChangedMethod.GetILGenerator();
addIl.Emit(OpCodes.Ldarg_0);
addIl.Emit(OpCodes.Dup);
addIl.Emit(OpCodes.Ldfld, propertyChangedField);
addIl.Emit(OpCodes.Ldarg_1);
addIl.Emit(OpCodes.Call, delegate_Combine);
addIl.Emit(OpCodes.Castclass, typeof(PropertyChangedEventHandler));
addIl.Emit(OpCodes.Stfld, propertyChangedField);
addIl.Emit(OpCodes.Ret);
MethodBuilder removePropertyChangedMethod = typeBuilder.DefineMethod("remove_PropertyChanged", MethodAttributes.Public|MethodAttributes.HideBySig|MethodAttributes.SpecialName|MethodAttributes.NewSlot|MethodAttributes.Virtual, typeof(void), new[] {typeof(PropertyChangedEventHandler)});
ILGenerator removeIl = removePropertyChangedMethod.GetILGenerator();
removeIl.Emit(OpCodes.Ldarg_0);
removeIl.Emit(OpCodes.Dup);
removeIl.Emit(OpCodes.Ldfld, propertyChangedField);
removeIl.Emit(OpCodes.Ldarg_1);
removeIl.Emit(OpCodes.Call, delegate_Remove);
removeIl.Emit(OpCodes.Castclass, typeof(PropertyChangedEventHandler));
removeIl.Emit(OpCodes.Stfld, propertyChangedField);
removeIl.Emit(OpCodes.Ret);
typeBuilder.DefineMethodOverride(addPropertyChangedMethod, iNotifyPropertyChanged_PropertyChanged.GetAddMethod());
typeBuilder.DefineMethodOverride(removePropertyChangedMethod, iNotifyPropertyChanged_PropertyChanged.GetRemoveMethod());
}
List<PropertyInfo> propertiesToImplement = new List<PropertyInfo>();
// first we collect all properties, those with setters before getters in order to enable less specific redundant getters
foreach (PropertyInfo property in allInterfaces.Where(intf => intf != typeof(INotifyPropertyChanged)).SelectMany(intf => intf.GetProperties())) {
if (property.CanWrite) {
propertiesToImplement.Insert(0, property);
} else {
propertiesToImplement.Add(property);
}
}
Dictionary<string, PropertyEmitter> fieldBuilders = new Dictionary<string, PropertyEmitter>();
foreach (PropertyInfo property in propertiesToImplement) {
PropertyEmitter propertyEmitter;
if (fieldBuilders.TryGetValue(property.Name, out propertyEmitter)) {
if ((propertyEmitter.PropertyType != property.PropertyType) && ((property.CanWrite) || (!property.PropertyType.IsAssignableFrom(propertyEmitter.PropertyType)))) {
throw new ArgumentException(string.Format("The interface has a conflicting property {0}", property.Name), "interfaceType");
}
} else {
fieldBuilders.Add(property.Name, propertyEmitter = new PropertyEmitter(typeBuilder, property.Name, property.PropertyType, propertyChangedField));
}
if (property.CanRead) {
typeBuilder.DefineMethodOverride(propertyEmitter.GetGetter(property.PropertyType), property.GetGetMethod());
}
if (property.CanWrite) {
typeBuilder.DefineMethodOverride(propertyEmitter.GetSetter(property.PropertyType), property.GetSetMethod());
}
}
return typeBuilder.CreateType();
}
/// <summary>
/// The method to be called to create the property level attributes for the PropertyEmitter
/// </summary>
/// <param name="emitter">The strongly typed emitter</param>
/// <param name="propertyDecl">The type declaration to add the attribues to.</param>
/// <param name="additionalAttributes">Additional attributes to emit</param>
public void EmitPropertyAttributes(PropertyEmitter emitter,
CodeMemberProperty propertyDecl,
List<CodeAttributeDeclaration> additionalAttributes)
{
if (MetadataUtil.IsPrimitiveType(emitter.Item.TypeUsage.EdmType) || MetadataUtil.IsEnumerationType(emitter.Item.TypeUsage.EdmType))
{
CodeAttributeDeclaration scalarPropertyAttribute = EmitSimpleAttribute(FQAdoFrameworkDataClassesName("EdmScalarPropertyAttribute"));
if (emitter.IsKeyProperty)
{
Debug.Assert(emitter.Item.Nullable == false, "An EntityKeyProperty cannot be nullable.");
AttributeEmitter.AddNamedAttributeArguments(scalarPropertyAttribute, "EntityKeyProperty", true);
}
if (!emitter.Item.Nullable)
{
AttributeEmitter.AddNamedAttributeArguments(scalarPropertyAttribute, "IsNullable", false);
}
propertyDecl.CustomAttributes.Add(scalarPropertyAttribute);
}
else //Complex property
{
Debug.Assert(MetadataUtil.IsComplexType(emitter.Item.TypeUsage.EdmType) ||
(MetadataUtil.IsCollectionType(emitter.Item.TypeUsage.EdmType)),
"not a complex type or a collection type");
CodeAttributeDeclaration attribute = EmitSimpleAttribute(FQAdoFrameworkDataClassesName("EdmComplexPropertyAttribute"));
propertyDecl.CustomAttributes.Add(attribute);
// Have CodeDOM serialization set the properties on the ComplexObject, not the ComplexObject instance.
attribute = EmitSimpleAttribute("System.ComponentModel.DesignerSerializationVisibility");
AttributeEmitter.AddAttributeArguments(attribute,
new object[] { new CodePropertyReferenceExpression(
new CodeTypeReferenceExpression(TypeReference.ForType(
typeof(System.ComponentModel.DesignerSerializationVisibility))),"Content") });
propertyDecl.CustomAttributes.Add(attribute);
if (!MetadataUtil.IsCollectionType(emitter.Item.TypeUsage.EdmType))
{
// Non-collection complex properties also need additional serialization attributes to force them to be explicitly serialized if they are null
// If this is omitted, null complex properties do not get explicitly set to null during deserialization, which causes
// them to be lazily constructed once the property is accessed after the entity is deserialized. If the property is
// actually null during serialiation, that means the user has explicitly set it, so we need to maintain that during serialization.
// This doesn't apply to collection types because they aren't lazily constructed and don't need this extra information.
attribute = EmitSimpleAttribute("System.Xml.Serialization.XmlElement");
AttributeEmitter.AddNamedAttributeArguments(attribute, "IsNullable", true);
propertyDecl.CustomAttributes.Add(attribute);
attribute = EmitSimpleAttribute("System.Xml.Serialization.SoapElement");
AttributeEmitter.AddNamedAttributeArguments(attribute, "IsNullable", true);
propertyDecl.CustomAttributes.Add(attribute);
}
}
// serialization attribute
AddDataMemberAttribute(propertyDecl);
if (additionalAttributes != null && additionalAttributes.Count > 0)
{
try
{
propertyDecl.CustomAttributes.AddRange(additionalAttributes.ToArray());
}
catch (ArgumentNullException e)
{
emitter.Generator.AddError(Strings.InvalidAttributeSuppliedForProperty(emitter.Item.Name),
ModelBuilderErrorCode.InvalidAttributeSuppliedForProperty,
EdmSchemaErrorSeverity.Error,
e);
}
}
EmitGeneratedCodeAttribute(propertyDecl);
}
/// <summary>
/// The method to be called to create the property level attributes for the PropertyEmitter
/// </summary>
/// <param name="emitter">The strongly typed emitter</param>
/// <param name="propertyDecl">The type declaration to add the attribues to.</param>
/// <param name="additionalAttributes">Additional attributes to emit</param>
public void EmitPropertyAttributes(PropertyEmitter emitter,
CodeMemberProperty propertyDecl,
List<CodeAttributeDeclaration> additionalAttributes)
{
if (additionalAttributes != null && additionalAttributes.Count > 0)
{
try
{
propertyDecl.CustomAttributes.AddRange(additionalAttributes.ToArray());
}
catch (ArgumentNullException e)
{
emitter.Generator.AddError(Strings.InvalidAttributeSuppliedForProperty(emitter.Item.Name),
ModelBuilderErrorCode.InvalidAttributeSuppliedForProperty,
EdmSchemaErrorSeverity.Error,
e);
}
}
}
public Type EmitClass(IEnumerable <Type> interfaceTypes,
Type baseType,
IEnumerable <MethodInfo> methodsToOverride,
IEnumerable <PropertyInfo> propertiesToOverride,
IEnumerable <EventInfo> eventsToOverride,
ConstructorInfo baseConstructor,
IEnumerable <CustomAttributeBuilder> attributeBuilders)
{
// Apply default values for parameters
if (baseType == null)
{
baseType = typeof(EmittedClassBase);
}
// Check limitations for this version
if (baseType != typeof(EmittedClassBase))
{
throw new NotImplementedException("The only supported baseType value is 'EmittedClassBase' in this version.");
}
if ((interfaceTypes == null) || (interfaceTypes.Count() != 1))
{
throw new NotImplementedException(
"Current implementation should be provided with exactly one single interface to implement.");
}
Type interfaceType = interfaceTypes.Single();
// Validate arguments
if (!interfaceType.IsInterface)
{
throw new ArgumentException("interfaceTypes can contain 'interface' types only. " + interfaceType.FullName +
" is not an interface.");
}
// Check if the component is initialized
if ((_moduleBuilder == null) || (_assemblyBuilder == null))
{
throw new InvalidOperationException("The DefaultClassEmitter component is not initialized properly.");
}
var uniqueTypeNumber = Interlocked.Increment(ref _typeNumber);
var typeName = DynamicTypePrefix + interfaceType.Name + uniqueTypeNumber;
var typeBuilder = _moduleBuilder.DefineType(
typeName,
TypeAttributes.Public
| TypeAttributes.Class
| TypeAttributes.AutoClass
| TypeAttributes.AnsiClass
| TypeAttributes.BeforeFieldInit
| TypeAttributes.AutoLayout,
typeof(EmittedClassBase),
new[] { interfaceType });
// Add custom attributes
if (attributeBuilders != null)
{
foreach (var builder in attributeBuilders)
{
typeBuilder.SetCustomAttribute(builder);
}
}
// Implement properties, events and methods
foreach (var propertyInfo in interfaceType.GetProperties())
{
PropertyEmitter.EmitProperty(typeBuilder, propertyInfo);
}
foreach (var eventInfo in interfaceType.GetEvents())
{
EventEmitter.EmitEvent(typeBuilder, eventInfo);
}
foreach (var methodInfo in interfaceType.GetMethods())
{
MethodBuilder methodBuilder = MethodEmitter.EmitMethod(
typeBuilder,
methodInfo.Name,
methodInfo.GetParameters().Select(pi => pi.ParameterType).ToArray(),
methodInfo.GetParameters().Select(pi => pi.IsOut).ToArray(),
methodInfo.ReturnType,
methodInfo.ReflectedType,
InterfaceMethodAttributes);
typeBuilder.DefineMethodOverride(methodBuilder, methodInfo);
}
var result = typeBuilder.CreateTypeInfo();
// if (SaveEmittedAssembly)
// _assemblyBuilder.Save(DynamicAssemblyName + ".dll");
return(result);
}
/// <summary>
/// Emit static factory method which creates an instance of the class and initializes
/// non-nullable properties (taken as arguments)
/// </summary>
/// <param name="typeDecl"></param>
protected virtual void EmitFactoryMethod(CodeTypeDeclaration typeDecl)
{
// build list of non-nullable properties
ReadOnlyMetadataCollection<EdmProperty> properties = GetProperties();
List<EdmProperty> parameters = new List<EdmProperty>(properties.Count);
foreach (EdmProperty property in properties)
{
bool include = IncludeFieldInFactoryMethod(property);
if (include)
{
parameters.Add(property);
}
}
// if there are no parameters, we don't emit anything (1 is for the null element)
// nor do we emit everything if this is the Ref propertied ctor and the parameter list is the same as the many parametered ctor
if (parameters.Count < 1)
{
return;
}
CodeMemberMethod method = new CodeMemberMethod();
CodeTypeReference typeRef = TypeReference.FromString(Item.Name);
UniqueIdentifierService uniqueIdentifierService = new UniqueIdentifierService(Generator.IsLanguageCaseSensitive);
string instanceName = uniqueIdentifierService.AdjustIdentifier(Utils.CamelCase(Item.Name));
// public static Class CreateClass(...)
method.Attributes = MemberAttributes.Static | MemberAttributes.Public;
method.Name = "Create" + Item.Name;
if (NavigationPropertyEmitter.IsNameAlreadyAMemberName(Item, method.Name, Generator.LanguageAppropriateStringComparer))
{
Generator.AddError(Strings.GeneratedFactoryMethodNameConflict(method.Name, Item.Name),
ModelBuilderErrorCode.GeneratedFactoryMethodNameConflict,
EdmSchemaErrorSeverity.Error);
}
method.ReturnType = typeRef;
AttributeEmitter.AddGeneratedCodeAttribute(method);
// output method summary comments
CommentEmitter.EmitSummaryComments(Strings.FactoryMethodSummaryComment(Item.Name), method.Comments);
// Class class = new Class();
CodeVariableDeclarationStatement createNewInstance = new CodeVariableDeclarationStatement(
typeRef, instanceName, new CodeObjectCreateExpression(typeRef));
method.Statements.Add(createNewInstance);
CodeVariableReferenceExpression instanceRef = new CodeVariableReferenceExpression(instanceName);
// iterate over the properties figuring out which need included in the factory method
foreach (EdmProperty property in parameters)
{
// CreateClass( ... , propType propName ...)
PropertyEmitter propertyEmitter = new PropertyEmitter(Generator, property, UsingStandardBaseClass);
CodeTypeReference propertyTypeReference = propertyEmitter.PropertyType;
String parameterName = uniqueIdentifierService.AdjustIdentifier(Utils.FixParameterName(propertyEmitter.PropertyName, "argument"));
parameterName = Utils.SetSpecialCaseForFxCopOnPropertyName(parameterName);
CodeParameterDeclarationExpression paramDecl = new CodeParameterDeclarationExpression(
propertyTypeReference, parameterName);
CodeArgumentReferenceExpression paramRef = new CodeArgumentReferenceExpression(paramDecl.Name);
method.Parameters.Add(paramDecl);
// add comment describing the parameter
CommentEmitter.EmitParamComments(paramDecl, Strings.FactoryParamCommentGeneral(propertyEmitter.PropertyName), method.Comments);
CodeExpression newPropertyValue;
if (TypeSemantics.IsComplexType(propertyEmitter.Item.TypeUsage))
{
List<CodeExpression> complexVerifyParameters = new List<CodeExpression>();
complexVerifyParameters.Add(paramRef);
complexVerifyParameters.Add(new CodePrimitiveExpression(propertyEmitter.PropertyName));
// if (null == param) { throw new ArgumentNullException("PropertyName"); }
method.Statements.Add(
new CodeConditionStatement(
EmitExpressionEqualsNull(paramRef),
new CodeThrowExceptionStatement(
new CodeObjectCreateExpression(
TypeReference.ForType(typeof(ArgumentNullException)),
new CodePrimitiveExpression(parameterName)
)
)
)
);
newPropertyValue = paramRef;
}
else
{
newPropertyValue = paramRef;
}
// Scalar property:
// Property = param;
// Complex property:
// Property = StructuralObject.VerifyComplexObjectIsNotNull(param, propertyName);
method.Statements.Add(new CodeAssignStatement(new CodePropertyReferenceExpression(instanceRef, propertyEmitter.PropertyName), newPropertyValue));
}
// return class;
method.Statements.Add(new CodeMethodReturnStatement(instanceRef));
// actually add the method to the class
typeDecl.Members.Add(method);
}
/// <summary>
///
/// </summary>
/// <param name="typeDecl"></param>
protected virtual void EmitProperties(CodeTypeDeclaration typeDecl)
{
foreach (EdmMember member in Item.Members)
{
EdmProperty property = (member as EdmProperty);
if ((null != property) && (property.DeclaringType == Item))
{
PropertyEmitter propertyEmitter = new PropertyEmitter(Generator, property, _usingStandardBaseClass);
propertyEmitter.Emit(typeDecl);
}
}
}
public void WithAutoGetterSetter()
{
var emiter = new PropertyEmitter(this);
emiter.EmitAuto();
}
/// <summary>
///
/// </summary>
/// <param name="typeDecl"></param>
protected virtual void EmitProperties(CodeTypeDeclaration typeDecl)
{
foreach (EdmProperty property in Item.GetDeclaredOnlyMembers<EdmProperty>())
{
PropertyEmitter propertyEmitter = new PropertyEmitter(Generator, property, _usingStandardBaseClass);
propertyEmitter.Emit(typeDecl);
}
}
public override void EmitProperty(PropertyInfo propertyInfo)
{
var emitter = new PropertyEmitter(TypeBuilder, ImplField);
emitter.Emit(propertyInfo);
}
/// <summary>
/// Weaves the interception logic of a property.
/// </summary>
/// <param name="parent"></param>
/// <param name="item"></param>
public void WeavePropertyInterceptors(TypeEmitter parent, PropertyInterceptorInfo item)
{
var property = item.Property;
var getter = property.GetMethod != null ? new MethodEmitter(parent, property.GetMethod) : null;
var setter = property.SetMethod != null ? new MethodEmitter(parent, property.SetMethod) : null;
var count = item.Interceptors.Length;
var weaver = new PropertyEmitter(parent, property);
if (count == 0)
{
return;
}
var gInterceptors = new Variable[count];
var sInterceptors = new Variable[count];
for (int i = 0; i < count; i++)
{
var variables = CreateAttribute(weaver, getter, setter, item.Interceptors[i], item.Field);
gInterceptors[i] = variables[0];
sInterceptors[i] = variables[1];
}
var hasGetter = gInterceptors.Any(i => i != null);
var hasSetter = sInterceptors.Any(i => i != null);
var type = property.PropertyType;
var info = CreatePropertyInfo(weaver);
var field = property.GetBackingField();
var backing = (Variable)null;
if (field != null)
{
var def = field.Resolve();
def.Attributes &= ~Mono.Cecil.FieldAttributes.InitOnly;
backing = new Variable(def);
}
if (getter != null && hasGetter)
{
var il = getter.GetIL();
var result = getter.EmitLocal(property.PropertyType);
il.Body.SimplifyMacros();
il.Position = il.GetFirst();
il.Insert = CodeInsertion.Before;
if (backing != null)
{
il.Emit(Codes.ThisIf(backing));
il.Emit(Codes.Load(backing));
il.Emit(Codes.Store(result));
}
else
{
if (type.IsValueType)
{
il.Emit(Codes.Address(result));
il.Emit(Codes.Init(type));
}
else
{
il.Emit(Codes.Null);
il.Emit(Codes.Store(result));
}
}
il.Try();
var leave = WeaveMethodReturnsRoute(getter, result, true);
var cancel = il.EmitLabel();
var args = il.EmitLocal(Context.Finder.PropertyInterceptionArgs);
il.Emit(getter.Target.IsStatic ? Codes.Null : Codes.This);
il.Emit(Codes.Load(info));
il.Emit(Codes.Load(result));
il.Emit(Codes.Box(type));
il.Emit(Codes.Create(Context.Finder.PropertyInterceptionArgsCtor));
il.Emit(Codes.Store(args));
for (int i = 0; i < count; i++)
{
var inc = gInterceptors[i];
if (inc == null)
{
continue;
}
il.Emit(Codes.ThisIf(inc));
il.Emit(Codes.Load(inc));
il.Emit(Codes.Load(args));
il.Emit(Codes.Invoke(Context.Finder.PropertyGetInterceptorOnGet));
}
il.Position = leave;
il.Finally();
for (int i = 0; i < count; i++)
{
var inc = gInterceptors[i];
if (inc == null)
{
continue;
}
il.Emit(Codes.ThisIf(inc));
il.Emit(Codes.Load(inc));
il.Emit(Codes.Load(args));
il.Emit(Codes.Invoke(Context.Finder.PropertyGetInterceptorOnExit));
}
il.Mark(cancel);
il.EndTry();
il.Insert = CodeInsertion.After;
if (setter != null || backing != null)
{
var unchanged = il.EmitLabel();
il.Emit(Codes.Load(args));
il.Emit(Codes.Invoke(Context.Finder.PropertyInterceptionArgsIsDirtyGet));
il.Emit(Codes.IfFalse(unchanged));
if (!getter.Target.IsStatic)
{
il.Emit(Codes.This);
}
if (backing == null)
{
var pcount = setter.Target.Parameters.Count - 1;
for (int i = 0; i < pcount; i++)
{
il.Emit(Codes.Arg(setter.Target.Parameters[i]));
}
}
il.Emit(Codes.Load(args));
il.Emit(Codes.Invoke(Context.Finder.PropertyInterceptionArgsValueGet));
il.Emit(Codes.Unbox(type));
if (backing != null)
{
il.Emit(Codes.Store(backing));
}
else
{
il.Emit(Codes.Invoke(setter.Target));
}
il.Emit(Codes.Load(args));
il.Emit(Codes.Invoke(Context.Finder.PropertyInterceptionArgsValueGet));
il.Emit(Codes.Unbox(type));
il.Emit(Codes.Store(result));
il.Emit(Codes.Nop);
il.Mark(unchanged);
}
il.Emit(Codes.Load(result));
il.Body.InitLocals = true;
il.Body.OptimizeMacros();
}
if (setter != null && hasSetter)
{
var il = setter.GetIL();
il.Body.SimplifyMacros();
il.Position = il.GetFirst();
il.Insert = CodeInsertion.Before;
var args = il.EmitLocal(Context.Finder.PropertyInterceptionArgs);
var cancel = il.EmitLabel();
var argument = new Variable(setter.Target.Parameters.Last());
il.Try();
il.Emit(setter.Target.IsStatic ? Codes.Null : Codes.This);
il.Emit(Codes.Load(info));
il.Emit(Codes.Load(argument));
il.Emit(Codes.Box(type));
il.Emit(Codes.Create(Context.Finder.PropertyInterceptionArgsCtor));
il.Emit(Codes.Store(args));
for (int i = 0; i < count; i++)
{
var inc = sInterceptors[i];
if (inc == null)
{
continue;
}
il.Emit(Codes.ThisIf(inc));
il.Emit(Codes.Load(inc));
il.Emit(Codes.Load(args));
il.Emit(Codes.Invoke(Context.Finder.PropertySetInterceptorOnSet));
}
il.Emit(Codes.Load(args));
il.Emit(Codes.Invoke(Context.Finder.PropertyInterceptionArgsIsDirtyGet));
il.Emit(Codes.IfFalse(cancel));
il.Emit(Codes.Load(args));
il.Emit(Codes.Invoke(Context.Finder.PropertyInterceptionArgsValueGet));
il.Emit(Codes.Unbox(argument.Type));
il.Emit(Codes.Store(argument));
il.Emit(Codes.Nop);
il.Position = il.Position.Previous;
il.Mark(cancel);
il.Position = il.GetLast();
il.Emit(Codes.Leave(il.Position));
il.Finally();
for (int i = 0; i < count; i++)
{
var inc = sInterceptors[i];
if (inc == null)
{
continue;
}
il.Emit(Codes.ThisIf(inc));
il.Emit(Codes.Load(inc));
il.Emit(Codes.Load(args));
il.Emit(Codes.Invoke(Context.Finder.PropertySetInterceptorOnExit));
}
il.EndTry();
il.Body.InitLocals = true;
il.Body.OptimizeMacros();
}
}
