public MutableMethodInfo GetOrCreateOverride(MutableType declaringType, MethodInfo overriddenMethod, out bool isNewlyCreated)
{
ArgumentUtility.CheckNotNull("declaringType", declaringType);
ArgumentUtility.CheckNotNull("overriddenMethod", overriddenMethod);
Assertion.IsNotNull(overriddenMethod.DeclaringType);
if (!overriddenMethod.IsVirtual)
{
throw new ArgumentException("Only virtual methods can be overridden.", "overriddenMethod");
}
CheckIsNotMethodInstantiation(overriddenMethod, "overriddenMethod");
if (!declaringType.IsSubclassOf(overriddenMethod.DeclaringType))
{
var message = string.Format("Method is declared by type '{0}' outside of the proxy base class hierarchy.", overriddenMethod.DeclaringType.Name);
throw new ArgumentException(message, "overriddenMethod");
}
var baseDefinition = MethodBaseDefinitionCache.GetBaseDefinition(overriddenMethod);
var existingMutableOverride = _relatedMethodFinder.GetOverride(baseDefinition, declaringType.AddedMethods);
if (existingMutableOverride != null)
{
isNewlyCreated = false;
return(existingMutableOverride);
}
isNewlyCreated = true;
var baseMethod = _relatedMethodFinder.GetMostDerivedOverride(baseDefinition, declaringType.BaseType);
var bodyProvider = CreateBodyProvider(baseMethod);
var needsExplicitOverride = _relatedMethodFinder.IsShadowed(baseDefinition, declaringType.GetAllMethods());
if (needsExplicitOverride)
{
return(PrivateCreateExplicitOverrideAllowAbstract(declaringType, baseDefinition, bodyProvider));
}
var attributes = MethodOverrideUtility.GetAttributesForImplicitOverride(baseMethod);
return(CreateMethod(declaringType, baseMethod, baseMethod.Name, attributes, bodyProvider));
}