Implemented showing of properties of properties in debugger

git-svn-id: svn://svn.sharpdevelop.net/sharpdevelop/branches/2.0@1271 1ccf3a8d-04fe-1044-b7c0-cef0b8235c61

src/AddIns/Misc/Debugger/Debugger.Core/Project/Src/Variables/ArrayValue.cs

@@ -57,7 +57,7 @@ namespace Debugger
 		
 		internal unsafe ArrayValue(NDebugger debugger, ICorDebugValue corValue):base(debugger, corValue)
 		{
-			corArrayValue = this.corValue.CastTo<ICorDebugArrayValue>();
+			corArrayValue = this.CorValue.CastTo<ICorDebugArrayValue>();
 			corElementType = (CorElementType)corArrayValue.ElementType;
 			
 			rank = corArrayValue.Rank;

src/AddIns/Misc/Debugger/Debugger.Core/Project/Src/Variables/Evals/Eval.cs

@@ -117,7 +117,7 @@ namespace Debugger
 			ICorDebugValue[] args = getArgs();
 			
 			if (args == null) {
-				error = "Can not evaluate property of property";
+				error = "Can not get args for eval";
 				evalState = EvalState.Error;
 				if (EvalComplete != null) {
 					EvalComplete(this, new EvalEventArgs(this));
@@ -156,6 +156,7 @@ namespace Debugger
 		
 		protected internal virtual void OnEvalComplete(bool successful) 
 		{
+			// Eval result should be ICorDebugHandleValue so it should survive Continue()
 			result = Value.CreateValue(debugger, corEval.Result);
 			
 			if (result == null) {

src/AddIns/Misc/Debugger/Debugger.Core/Project/Src/Variables/ObjectValue.cs

@@ -67,16 +67,6 @@ namespace Debugger
 		}
 		*/
 		
-		internal ICorDebugHandleValue SoftReference {
-			get {
-				ICorDebugHeapValue2 heapValue = this.CorValue.As<ICorDebugHeapValue2>();
-				if (heapValue == null) { // TODO: Investigate
-					return null;
-				}
-				return heapValue.CreateHandle(CorDebugHandleType.HANDLE_WEAK_TRACK_RESURRECTION);
-			}
-		}
-		
 		public override string Type { 
 			get{ 
 				return classProps.Name;
@@ -97,7 +87,7 @@ namespace Debugger
 		
 		internal unsafe ObjectValue(NDebugger debugger, ICorDebugValue corValue):base(debugger, corValue)
 		{
-			corClass = this.corValue.CastTo<ICorDebugObjectValue>().Class;
+			corClass = this.CorValue.CastTo<ICorDebugObjectValue>().Class;
 			InitObjectVariable();
 		}
 
@@ -141,7 +131,7 @@ namespace Debugger
 			foreach(FieldProps f in metaData.EnumFields(ClassToken)) {
 				FieldProps field = f; // One per scope/delegate
 				if (field.IsStatic && field.IsLiteral) continue; // Skip field
-				if (!field.IsStatic && corValue == null) continue; // Skip field
+				if (!field.IsStatic && CorValue == null) continue; // Skip field
 				yield return new ClassVariable(debugger,
 				                               field.Name,
 				                               field.IsStatic,
@@ -178,7 +168,9 @@ namespace Debugger
 		Eval CreatePropertyEval(MethodProps method, ValueGetter getter)
 		{
 			Value updatedVal = getter();
-			if (updatedVal is UnavailableValue) return null;
+			if (updatedVal is UnavailableValue) {
+				return null;
+			}
 			if (this.IsEquivalentValue(updatedVal) && ((ObjectValue)updatedVal).SoftReference != null) {
 				ICorDebugFunction evalCorFunction = Module.CorModule.GetFunctionFromToken(method.Token);
 				
@@ -303,7 +295,7 @@ namespace Debugger
 				throw new DebuggerException("Unable to get base class: " + fullTypeName);
 			} else {
 				ICorDebugClass superClass = corModuleSuperclass.GetClassFromToken(classProps.SuperClassToken);
-				return new ObjectValue(debugger, corValue, superClass);
+				return new ObjectValue(debugger, CorValue, superClass);
 			}
 		}
 	}

src/AddIns/Misc/Debugger/Debugger.Core/Project/Src/Variables/PrimitiveValue.cs

@@ -28,9 +28,9 @@ namespace Debugger
 		public object Primitive { 
 			get {
 				if (CorType == CorElementType.STRING) {
-					return (corValue.CastTo<ICorDebugStringValue>()).String;
+					return (CorValue.CastTo<ICorDebugStringValue>()).String;
 				} else {
-					return (corValue.CastTo<ICorDebugGenericValue>()).Value;
+					return (CorValue.CastTo<ICorDebugGenericValue>()).Value;
 				}
 			}
 			set {
@@ -45,7 +45,7 @@ namespace Debugger
 				if (CorType == CorElementType.STRING) {
 					throw new NotSupportedException();
 				} else {
-					(corValue.CastTo<ICorDebugGenericValue>()).Value = newValue;
+					(CorValue.CastTo<ICorDebugGenericValue>()).Value = newValue;
 				}
 				OnValueChanged();
 			}

src/AddIns/Misc/Debugger/Debugger.Core/Project/Src/Variables/PropertyVariable.cs

@@ -32,7 +32,7 @@ namespace Debugger
 			if (Eval != null) {
 				return Eval.Result;
 			} else {
-				return new UnavailableValue(debugger, "Property has expired");
+				return new UnavailableValue(debugger, "Property unavailable");
 			}
 		}
 		

src/AddIns/Misc/Debugger/Debugger.Core/Project/Src/Variables/Value.cs

@@ -16,7 +16,9 @@ namespace Debugger
 	public abstract class Value: RemotingObjectBase
 	{
 		protected NDebugger debugger;
-		protected ICorDebugValue corValue;
+		ICorDebugValue corValue;
+		// ICorDebugHandleValue can be used to get corValue back after Continue()
+		ICorDebugHandleValue corHandleValue;
 		object pauseSessionAtCreation;
 		
 		public event EventHandler<ValueEventArgs> ValueChanged;
@@ -29,7 +31,30 @@ namespace Debugger
 		
 		internal ICorDebugValue CorValue {
 			get {
-				return corValue;
+				if (pauseSessionAtCreation == debugger.PauseSession) {
+					return corValue;
+				} else {
+					if (corHandleValue == null) {
+						throw new DebuggerException("CorValue has expired");
+					} else {
+						corValue = DereferenceUnbox(corHandleValue.As<ICorDebugValue>());
+						pauseSessionAtCreation = debugger.PauseSession;
+						return corValue;
+					}
+				}
+			}
+		}
+		
+		protected ICorDebugHandleValue SoftReference {
+			get {
+				if (corHandleValue != null) return corHandleValue;
+				
+				ICorDebugHeapValue2 heapValue = this.CorValue.As<ICorDebugHeapValue2>();
+				if (heapValue == null) { // TODO: Investigate - hmmm, value types are not at heap?
+					return null;
+				} else {
+					return heapValue.CreateHandle(CorDebugHandleType.HANDLE_WEAK_TRACK_RESURRECTION);
+				}
 			}
 		}
 		
@@ -38,13 +63,17 @@ namespace Debugger
 		/// </summary>
 		public bool IsExpired {
 			get {
-				return pauseSessionAtCreation != debugger.PauseSession;
+				if (corHandleValue == null) {
+					return pauseSessionAtCreation != debugger.PauseSession;
+				} else {
+					return false;
+				}
 			}
 		}
 		
 		internal CorElementType CorType {
 			get {
-				return GetCorType(corValue);
+				return GetCorType(CorValue);
 			}
 		}
 		
@@ -104,6 +133,9 @@ namespace Debugger
 		{
 			this.debugger = debugger;
 			if (corValue != null) {
+				if (corValue.Is<ICorDebugHandleValue>()) {
+					corHandleValue = corValue.As<ICorDebugHandleValue>();
+				}
 				this.corValue = DereferenceUnbox(corValue);
 			}
 			this.pauseSessionAtCreation = debugger.PauseSession;
@@ -203,12 +235,12 @@ namespace Debugger
 		internal static Value CreateValue(NDebugger debugger, ICorDebugValue corValue)
 		{
 			CorElementType type = Value.GetCorType(corValue);
-
+			
 			if (Value.DereferenceUnbox(corValue) == null)
 			{
 				return new NullValue(debugger, corValue);
 			}
-
+			
 			switch(type)
 			{
 				case CorElementType.BOOLEAN: