public ICodeNode VisitMethodInvocationExpression(MethodInvocationExpression node)
{
if (!(node.MethodExpression is MethodReferenceExpression))
{
return null;
}
MethodReferenceExpression methodReferenceExpression = node.MethodExpression;
MethodReference methodReference = methodReferenceExpression.Method;
if (methodReference.Name == null)
{
return null;
}
string eventMethodPrefix = GetEventMethodPrefix(methodReference.Name);
if (string.IsNullOrEmpty(eventMethodPrefix))
{
return null;
}
if (methodReference.Parameters.Count != 1)
{
return null;
}
TypeReference typeReference = methodReference.DeclaringType;
EventDefinition targetEvent = null;
do
{
if (typeReference == null)
{
break;
}
TypeDefinition typeDefinition = typeReference.Resolve();
if (typeDefinition == null)
{
break;
}
string eventName = methodReference.Name.Substring(eventMethodPrefix.Length);
targetEvent = typeDefinition.Events.FirstOrDefault(e => e.Name == eventName);
if (targetEvent == null)
{
typeReference = typeDefinition.BaseType;
}
} while (typeReference != null && targetEvent == null);
if (targetEvent == null)
{
return null;
}
EventReferenceExpression target = new EventReferenceExpression(methodReferenceExpression.Target, targetEvent, null);
return GetEventAssignExpression(target, node.Arguments[0], eventMethodPrefix, node.InvocationInstructions);
}
public override Expression CloneExpressionOnly()
{
Expression targetClone = Target != null?Target.CloneExpressionOnly() : null;
EventReferenceExpression result = new EventReferenceExpression(targetClone, Event, null);
return(result);
}
public override Expression Clone()
{
Expression targetClone = Target != null?Target.Clone() : null;
EventReferenceExpression result = new EventReferenceExpression(targetClone, Event, instructions);
return(result);
}
public override bool Equals(Expression other)
{
if (!(other is EventReferenceExpression))
{
return(false);
}
EventReferenceExpression eventRef = other as EventReferenceExpression;
if (this.Target == null)
{
if (eventRef.Target != null)
{
return(false);
}
}
else if (!this.Target.Equals(eventRef.Target))
{
return(false);
}
return(this.Event.FullName == eventRef.Event.FullName);
}
public override void VisitEventReferenceExpression(EventReferenceExpression node)
{
if (node.Target != null)
{
bool isComplexTarget = IsComplexTarget(node.Target);
if (isComplexTarget)
{
WriteToken("(");
}
Visit(node.Target);
if (isComplexTarget)
{
WriteToken(")");
}
}
else
{
WriteReferenceAndNamespaceIfInCollision(node.Event.DeclaringType);
}
WriteToken(".");
WriteReference(node.Event.Name, node.Event);
}
private Expression GetEventAssignExpression(EventReferenceExpression target, Expression argument, string eventMethodPrefix, IEnumerable<Instruction> instructions)
{
if (eventMethodPrefix == "add_")
{
return new BinaryExpression(BinaryOperator.AddAssign, target, argument, typeSystem, instructions);
}
if (eventMethodPrefix == "remove_")
{
return new BinaryExpression(BinaryOperator.SubtractAssign, target, argument, typeSystem, instructions);
}
return null;
}
public override Expression CloneExpressionOnly()
{
Expression targetClone = Target != null ? Target.CloneExpressionOnly() : null;
EventReferenceExpression result = new EventReferenceExpression(targetClone, Event, null);
return result;
}
public override Expression Clone()
{
Expression targetClone = Target != null ? Target.Clone() : null;
EventReferenceExpression result = new EventReferenceExpression(targetClone, Event, instructions);
return result;
}
public override ICodeNode VisitEventReferenceExpression(EventReferenceExpression node)
{
node.Target = (Expression)VisitTargetExpression(node.Target);
return node;
}
public virtual void VisitEventReferenceExpression(EventReferenceExpression node)
{
Visit(node.Target);
}