public ObjectValue[] GetArrayChildren(ObjectCacheNode cacheNode,ObjectPath arrayPath, int index, int elementsToDisplay, EvaluationOptions options)
{
var t = cacheNode.NodeType as ArrayType;
var elementType = t.ValueType;
var sizeOfElement = SizeOf (elementType);
ulong firstItemPointer;
if (cacheNode is SubArrayCacheNode) {
var sac = cacheNode as SubArrayCacheNode;
firstItemPointer = sac.firstItem;
elementsToDisplay = Math.Min (sac.length, index + elementsToDisplay) - index;
} else {
var header = Memory.ReadDArrayHeader (cacheNode.addressExpression);
firstItemPointer = header.FirstItem.ToUInt64 ();
elementsToDisplay = Math.Min (header.Length, index + elementsToDisplay) - index;
}
byte[] rawArrayContent;
var startAddress = firstItemPointer + (ulong)(index * sizeOfElement);
Memory.Read (startAddress.ToString (), sizeOfElement * elementsToDisplay, out rawArrayContent);
var children = new ObjectValue[elementsToDisplay];
ObjectPath item;
var elementTypeToken = elementType is PrimitiveType ? (elementType as PrimitiveType).TypeToken : DTokens.INVALID;
if (elementTypeToken != DTokens.INVALID)
{
var valFunc = DGdbTools.GetValueFunction (elementTypeToken);
var elementTypeString = elementType.ToCode ();
var hex = DisplayAsHex;
for (uint i = 0; i < elementsToDisplay; i++) {
var valStr = valFunc (rawArrayContent, (int)(i * sizeOfElement), hex);
item = arrayPath.Append ((index + i).ToString ());
children [i] = ObjectValue.CreatePrimitive (ValueSource, item, elementTypeString,
new EvaluationResult (valStr), ObjectValueFlags.ArrayElement);
}
}
else if (elementType is ArrayType) {
var elementArrayType = elementType as ArrayType;
for (var i = elementsToDisplay - 1; i >= 0; i--){
item = arrayPath.Append ((index + i).ToString ());
try{
int subArrayLength;
ulong subArrayFirstPointer;
ExamArrayInfo (rawArrayContent, i * sizeOfElement, out subArrayLength, out subArrayFirstPointer);
children [i] = EvaluateArray (subArrayLength, subArrayFirstPointer, elementArrayType,
ObjectValueFlags.ArrayElement, item);
cacheNode.Set(new SubArrayCacheNode(item.LastName, elementArrayType, subArrayFirstPointer, subArrayLength));
}catch(Exception ex) {
Ide.MessageService.ShowException (ex);
}
}
}
else if (elementType is PointerType ||
elementType is InterfaceType ||
elementType is ClassType) {
for (int i = 0; i < elementsToDisplay; i++) {
item = arrayPath.Append ((index + i).ToString ());
long elementPointer;
if (sizeOfElement == 4)
elementPointer = BitConverter.ToInt32 (rawArrayContent, i * 4);
else
elementPointer = BitConverter.ToInt64 (rawArrayContent, i * 8);
children [i] = EvaluateVariable (elementPointer.ToString (), ref elementType, ObjectValueFlags.ArrayElement, item);
cacheNode.Set(new ObjectCacheNode(item.LastName, elementType, (elementPointer+i*sizeOfElement).ToString()));
}
}
else if (elementType is StructType/* || elementType is UnionType*/) {
// Get struct size or perhaps just get the struct meta information from gdb
//return ObjectValue.CreateNotSupported (ValueSource, path, t.ToCode (), "Struct/Union arrays can't be examined yet", flags);
}
return children;
}
public ObjectValue[] GetChildren (ObjectPath path, int firstItemIndex, int count, EvaluationOptions options)
{
EvaluationContext cctx = ctx.WithOptions (options);
if (path.Length > 1) {
// Looking for children of an array element
int[] idx = StringToIndices (path [1]);
object obj = array.GetElement (idx);
return cctx.Adapter.GetObjectValueChildren (cctx, new ArrayObjectSource (array, path[1]), obj, firstItemIndex, count);
}
int lowerBound;
int upperBound;
bool isLastDimension;
if (bounds.Length > 1) {
int rank = baseIndices.Length;
lowerBound = 0;
upperBound = bounds [rank] - 1;
isLastDimension = rank == bounds.Length - 1;
} else {
lowerBound = 0;
upperBound = bounds [0] - 1;
isLastDimension = true;
}
int len;
int initalIndex;
if (!IsRange) {
initalIndex = lowerBound;
len = upperBound + 1;
}
else {
initalIndex = firstIndex;
len = lastIndex - firstIndex + 1;
}
if (firstItemIndex == -1) {
firstItemIndex = 0;
count = len;
}
// Make sure the group doesn't have too many elements. If so, divide
int div = 1;
while (len / div > MaxChildCount)
div *= 10;
if (div == 1 && isLastDimension) {
// Return array elements
ObjectValue[] values = new ObjectValue [count];
ObjectPath newPath = new ObjectPath ("this");
int[] curIndex = new int [baseIndices.Length + 1];
Array.Copy (baseIndices, curIndex, baseIndices.Length);
string curIndexStr = IndicesToString (baseIndices);
if (baseIndices.Length > 0) curIndexStr += ",";
for (int n=0; n < values.Length; n++) {
int index = n + initalIndex + firstItemIndex;
string sidx = curIndexStr + index.ToString ();
ObjectValue val;
string ename = "[" + sidx.Replace (",",", ") + "]";
if (index > upperBound)
val = ObjectValue.CreateUnknown (sidx);
else {
curIndex [curIndex.Length - 1] = index;
object elem = array.GetElement (curIndex);
val = cctx.Adapter.CreateObjectValue (cctx, this, newPath.Append (sidx), elem, ObjectValueFlags.ArrayElement);
if (elem != null && !cctx.Adapter.IsNull (cctx, elem)) {
TypeDisplayData tdata = cctx.Adapter.GetTypeDisplayData (cctx, cctx.Adapter.GetValueType (cctx, elem));
if (!string.IsNullOrEmpty (tdata.NameDisplayString))
ename = cctx.Adapter.EvaluateDisplayString (cctx, elem, tdata.NameDisplayString);
}
}
val.Name = ename;
values [n] = val;
}
return values;
}
else if (!isLastDimension && div == 1) {
// Return an array element group for each index
List<ObjectValue> list = new List<ObjectValue> ();
for (int i=0; i<count; i++) {
int index = i + initalIndex + firstItemIndex;
ObjectValue val;
// This array must be created at every call to avoid sharing
// changes with all array groups
int[] curIndex = new int [baseIndices.Length + 1];
Array.Copy (baseIndices, curIndex, baseIndices.Length);
curIndex [curIndex.Length - 1] = index;
if (index > upperBound)
val = ObjectValue.CreateUnknown ("");
else {
ArrayElementGroup grp = new ArrayElementGroup (cctx, array, curIndex);
val = grp.CreateObjectValue ();
}
list.Add (val);
}
return list.ToArray ();
}
else {
// Too many elements. Split the array.
// Don't make divisions of 10 elements, min is 100
if (div == 10)
div = 100;
// Create the child groups
int i = initalIndex + firstItemIndex;
len += i;
List<ObjectValue> list = new List<ObjectValue> ();
while (i < len) {
int end = i + div - 1;
if (end > len)
end = len - 1;
ArrayElementGroup grp = new ArrayElementGroup (cctx, array, baseIndices, i, end);
list.Add (grp.CreateObjectValue ());
i += div;
}
return list.ToArray ();
}
}
public ObjectValue[] GetClassInstanceChildren(ObjectCacheNode cacheNode,ObjectPath classPath, EvaluationOptions options)
{
bool isStruct = cacheNode.NodeType is StructType || cacheNode.NodeType is UnionType;
if (!isStruct && !(cacheNode.NodeType is ClassType))
throw new ArgumentException ("Can only handle structs, unions and classes!");
var objectMembers = new List<ObjectValue> ();
int objectSize;
var members = GetMembersWithOffsets (cacheNode.NodeType as TemplateIntermediateType, out objectSize);
// read in the object bytes -- The length of an object can be read dynamically and thus the primary range of bytes that contain object properties.
byte[] bytes;
if (isStruct) {
Memory.Read (MemoryExamination.BuildAddressExpression(cacheNode.addressExpression, "&({0})"), objectSize, out bytes);
}
else
bytes = Memory.ReadObjectBytes (cacheNode.addressExpression);
foreach (var kv in members) {
var member = kv.Item1;
var currentOffset = kv.Item2;
var memberType = member.Base;
while (memberType is TemplateParameterSymbol || memberType is AliasedType)
memberType = (memberType as DSymbol).Base;
var memberFlags = BuildObjectValueFlags (member) | ObjectValueFlags.Field;
var memberPath = classPath.Append (member.Name);
try {
if (memberType is PrimitiveType) {
objectMembers.Add (EvaluatePrimitive (bytes, currentOffset, memberType as PrimitiveType, memberFlags, memberPath));
} else if (memberType is ArrayType) {
objectMembers.Add (EvaluateArray (bytes, currentOffset, memberType as ArrayType, memberFlags, memberPath));
}
else if (memberType is PointerType ||
memberType is InterfaceType ||
memberType is ClassType) {
long ptr;
if (DGdbSession.Is64Bit)
ptr = BitConverter.ToInt64 (bytes, currentOffset);
else
ptr = BitConverter.ToInt32 (bytes, currentOffset);
if (ptr < 1)
objectMembers.Add (ObjectValue.CreateNullObject (ValueSource, memberPath, memberType.ToCode(), memberFlags));
else
objectMembers.Add (EvaluateVariable (ptr.ToString (),ref memberType, memberFlags, memberPath));
}
else if(memberType is StructType)
objectMembers.Add(ObjectValue.CreateObject(ValueSource, memberPath, memberType.ToCode(), memberType.ToString(), memberFlags, null));
} catch (Exception ex) {
Backtrace.DSession.LogWriter (false, "Error in GetClassInstanceChildren(memberPath="+memberPath.ToString()+"): " + ex.Message+"\n");
}
// TODO: use alignof property instead of constant
// Create access expression for field inside the object.
string addressExpression;
if(isStruct)
{
addressExpression = MemoryExamination.EnforceReadRawExpression+"((void*)"+MemoryExamination.BuildAddressExpression(cacheNode.addressExpression, "&({0})")+ "+"+currentOffset+")";
}
else
addressExpression = MemoryExamination.EnforceReadRawExpression+"((void*)"+MemoryExamination.BuildAddressExpression(cacheNode.addressExpression) + "+" + currentOffset+")";
cacheNode.Set (new ObjectCacheNode (member.Name, memberType, addressExpression));
}
return objectMembers.ToArray ();
}
