|
public static TestUObjectFlags ( string uobj_expr_str, string flags, DkmVisualizedExpression context_expr ) : |
||
| uobj_expr_str | string | |
| flags | string | |
| context_expr | DkmVisualizedExpression | |
| Результат | ||
public static bool IsNativeUClassOrUInterface(string uclass_expr_str, DkmVisualizedExpression context_expr)
{
// @TODO: Think we should really check class flags for CLASS_Native, to potentially support interface classes too.
// (see comment on flag in UE4 header)
return(UE4Utility.TestUObjectFlags(uclass_expr_str, ObjFlags.Native, context_expr));
}
public void EvaluateProperties()
{
List <DkmEvaluationResult> evals = new List <DkmEvaluationResult>();
// Assume we've been constructed with the fabricated property list expression
DkmChildVisualizedExpression proplist_expr = (DkmChildVisualizedExpression)expression_;
Debug.Assert(proplist_expr != null);
// start could be an expression with the type of any UObject-derived class
DkmVisualizedExpression start_expr = proplist_expr.Parent;
string base_expression_str = Utility.GetExpressionFullName(start_expr);
base_expression_str = Utility.StripExpressionFormatting(base_expression_str);
ExpressionManipulator obj_em = null;
// @TODO: Deal with non-pointer start expression
obj_em = ExpressionManipulator.FromExpression(base_expression_str);
// Determine if our base expression is <UObject-type>* or <UObject-type>
bool is_pointer = start_expr.GetDataItem <UObjectDataItem>().IsPointer;
if (!is_pointer)
{
obj_em = obj_em.AddressOf();
}
var uclass_em = obj_em.PtrCast(Typ.UObjectBase).PtrMember(Memb.ObjClass);
if (Config.PropertyDisplayPolicy == Config.PropDisplayPolicyType.BlueprintOnly)
{
// See if the actual class of the object instance whose properties we want to enumerate
// is native or not.
bool is_native = UE4Utility.TestUObjectFlags(
uclass_em.Expression,
ObjFlags.Native,
start_expr
);
// If the instance class is native, then it can't possibly have any non-native properties,
// so bail out now.
// @TODO: Even if the class is not native, we should still be able to avoid doing all the work
// for enumerating every native property in order to find the non-native ones...
if (is_native)
{
return;
}
}
// Get the UStruct part of the UClass, in order to begin iterating properties
var ustruct_em = uclass_em.PtrCast(Typ.UStruct);
// Now access PropertyLink member, which is the start of the linked list of properties
var prop_em = ustruct_em.PtrMember(Memb.FirstProperty);
uint idx = 0;
while (true)
{
Debug.Print("UE4PV: Invoking raw eval on UProperty* expression");
var prop_eval = DefaultEE.DefaultEval(prop_em.Expression, start_expr, true) as DkmSuccessEvaluationResult;
Debug.Assert(prop_eval != null);
if (prop_eval.Address.Value == 0)
{
// nullptr, end of property list
break;
}
bool should_skip = false;
if (!should_skip && Config.PropertyDisplayPolicy == Config.PropDisplayPolicyType.BlueprintOnly)
{
// Check to see if this property is native or blueprint
// We can test this by getting the UProperty's Outer, and checking its object flags for RF_Native.
var prop_outer_em = prop_em.PtrCast(Typ.UObjectBase).PtrMember(Memb.ObjOuter);
bool is_native = UE4Utility.TestUObjectFlags(prop_outer_em.Expression, ObjFlags.Native, start_expr);
// According to UE4 UStruct API docs, property linked list is ordered from most-derived
// to base. If so, we should be able to bail out here knowing that having hit a native property,
// all following properties must be native too.
if (is_native)
{
return;
}
}
if (!should_skip)
{
// @TODO: Here we use the starting expression for the container.
// May not work if the root expression was not of pointer type!!
var prop_val_eval = GeneratePropertyValueEval(
obj_em.Expression,
prop_em.Expression,
idx,
start_expr
);
if (prop_val_eval != null && !Config.IsPropertyHidden(prop_val_eval.Name))
{
prop_evals_[prop_val_eval.Name] = prop_val_eval;
++idx;
}
}
// Advance to next link
prop_em = prop_em.PtrMember(Memb.NextProperty);
}
}
