private MethodBase FindMatch(MethodBase[] methodCandidates, BindingFlags bindingAttr, Type[] types, ParameterModifier[] modifiers)
{
// Try the default binder first. Never gives false positive, but will fail to detect methods w/ parameter array because
// it will not expand the formal parameter list when checking against actual parameters.
var result = Type.DefaultBinder.SelectMethod(bindingAttr, methodCandidates, types, modifiers);
// Could be false negative, check for parameter array and if so condense it back to an array before re-checking.
if (result == null)
{
foreach (var method in methodCandidates)
{
var methodInfo = method as MethodInfo;
var formalParams = methodInfo.GetParameters();
if (MethodResolver.HaveParameterArray(formalParams)) // Check if the last parameter of method is marked w/ "params" attribute
{
var elementType = formalParams[formalParams.Length - 1].ParameterType.GetElementType();
var allCompatible = true;
// There could be more actual parameters than formal parameters, because the formal parameter is a params T'[] for some T'.
// So, check that each actual parameter starting at position [formalParams.Length - 1] is compatible with T'.
for (var i = formalParams.Length - 1; i < types.Length - 1; i++)
{
if (!TypeHelper.AreTypesCompatible(types[i], elementType))
{
allCompatible = false;
break;
}
}
if (!allCompatible)
{
continue;
}
// Condense the actual parameter back to an array.
var typeArray = new Type[formalParams.Length];
for (var i = 0; i < typeArray.Length - 1; i++)
{
typeArray[i] = types[i];
}
typeArray[typeArray.Length - 1] = elementType.MakeArrayType();
// Recheck the condensed array
var newFound = Type.DefaultBinder.SelectMethod(bindingAttr, new MethodBase[] { methodInfo }, typeArray, modifiers);
if (result != null && newFound != null)
{
var type = newFound.ReflectedType.Name;
var name = newFound.Name;
var bindingType = bindingAttr == staticBindingFlags ? staticString : instanceString;
throw FxTrace.Exception.AsError(new AmbiguousMatchException(SR.DuplicateMethodFound(type, bindingType, name, this.parentActivity.DisplayName)));
}
else
{
result = newFound;
}
}
}
}
return(result);
}
private MethodBase FindMatch(MethodBase[] methodCandidates, BindingFlags bindingAttr, Type[] types, ParameterModifier[] modifiers)
{
MethodBase base2 = Type.DefaultBinder.SelectMethod(bindingAttr, methodCandidates, types, modifiers);
if (base2 == null)
{
foreach (MethodBase base3 in methodCandidates)
{
MethodInfo info = base3 as MethodInfo;
ParameterInfo[] parameters = info.GetParameters();
if (MethodResolver.HaveParameterArray(parameters))
{
Type elementType = parameters[parameters.Length - 1].ParameterType.GetElementType();
bool flag = true;
for (int i = parameters.Length - 1; i < (types.Length - 1); i++)
{
if (!System.Runtime.TypeHelper.AreTypesCompatible(types[i], elementType))
{
flag = false;
break;
}
}
if (flag)
{
Type[] typeArray = new Type[parameters.Length];
for (int j = 0; j < (typeArray.Length - 1); j++)
{
typeArray[j] = types[j];
}
typeArray[typeArray.Length - 1] = elementType.MakeArrayType();
MethodBase base4 = Type.DefaultBinder.SelectMethod(bindingAttr, new MethodBase[] { info }, typeArray, modifiers);
if ((base2 != null) && (base4 != null))
{
string name = base4.ReflectedType.Name;
string str2 = base4.Name;
string str3 = (bindingAttr == MethodResolver.staticBindingFlags) ? MethodResolver.staticString : MethodResolver.instanceString;
throw FxTrace.Exception.AsError(new AmbiguousMatchException(System.Activities.SR.DuplicateMethodFound(name, str3, str2, this.parentActivity.DisplayName)));
}
base2 = base4;
}
}
}
}
return(base2);
}