// Handles field like events (i.e, no add/remove accessors)
public override void VisitEventFieldDeclaration(EventFieldDeclarationSyntax node)
{
/*
* .field private class [mscorlib]System.EventHandler TheEvent
* .event [mscorlib]System.EventHandler TheEvent
* {
* .addon instance void Test::add_TheEvent(class [mscorlib]System.EventHandler)
* .removeon instance void Test::remove_TheEvent(class [mscorlib]System.EventHandler)
* }
*/
//TODO: semantic model fails to resolve the event. Bug?
//var eventSymbol = Context.SemanticModel.GetDeclaredSymbol(node);
eventDeclaringTypeVar = Context.DefinitionVariables.GetLastOf(MemberKind.Type).VariableName;
var backingFieldVar = string.Empty;
var declaringType = node.ResolveDeclaringType();
if (!declaringType.IsKind(SyntaxKind.InterfaceDeclaration))
{
backingFieldVar = AddBackingField(node); // backing field will have same name as the event
}
var eventType = ResolveType(node.Declaration.Type);
var isStatic = node.Modifiers.Any(m => m.IsKind(SyntaxKind.StaticKeyword));
var addAccessorVar = AddAddAccessor(node, backingFieldVar, isStatic, declaringType, eventType);
var removeAccessorVar = AddRemoveAccessor(node, backingFieldVar, isStatic, declaringType, eventType);
AddCecilExpression($"{eventDeclaringTypeVar}.Methods.Add({addAccessorVar});");
AddCecilExpression($"{eventDeclaringTypeVar}.Methods.Add({removeAccessorVar});");
var eventName = node.Declaration.Variables[0].Identifier.Text;
var evtDefVar = AddEventDefinition(eventDeclaringTypeVar, eventName, eventType, addAccessorVar, removeAccessorVar);
HandleAttributesInMemberDeclaration(node.AttributeLists, evtDefVar);
}
private string AddBackingField(EventFieldDeclarationSyntax node)
{
var privateModifier = SyntaxFactory.Token(SyntaxKind.PrivateKeyword); // always private no matter the accessibility of the event
var accessibilityModifier = node.Modifiers.FirstOrDefault(m => m.IsKind(SyntaxKind.PublicKeyword) || m.IsKind(SyntaxKind.InternalKeyword));
var backingFieldModifiers = accessibilityModifier == default
? node.Modifiers.Add(privateModifier)
: node.Modifiers.Replace(accessibilityModifier, privateModifier);
var fields = FieldDeclarationVisitor.HandleFieldDeclaration(Context, node, node.Declaration, backingFieldModifiers, node.ResolveDeclaringType());
return(fields.First());
}