Debugger: Rework expression parsing API.

ExpressionInfo:
- No longer stores an explicit result type (this is inferred from
  evaluation of the expression itself now).
- Introduce class ExpressionResult for returning the result of an
  expression computation. This can currently take the form of either
  a primitive value, or a value node object.
- Adjust UserInterfaceListener and ExpressionInfo::Listener to take
  the above changes into account, and correspondingly adjust all
  callers/listeners.

CLanguageExpressionEvaluator:
- Introduce child class Operand. This subsumes the functionality that
  was previously in the separate Number class, and can represent a
  primitive value, a value node or  a type. Also has functionality to
  implicity handle type promotion/inferring when performing calculations
  between operands.
- Adjust expression parser to operate in terms of Operands rather than
  Numbers. This allows a number of improvements, most notably that an
  expression can now return a value node as a result rather than only
  a primitive number. This capability isn't yet fully used, but paves
  the way for future uses such as an expression that evaluates to a data
  member, a global variable, or an arbitrary pointer of a particular type.
- Various cleanups/simplifications that were possible as a result of the above
  changes.

ExpressionEvaluationWindow/ExpressionPromptWindow:
- Remove type menu field, since the expression API no longer uses it.

Adding/removing expressions in the VariablesView is temporarily disabled,
pending some further rework there to properly handle the new result object.

src/apps/debugger/Jamfile

@@ -222,7 +222,6 @@ Application Debugger :
 
 	# types
 	ArrayIndexPath.cpp
-	Number.cpp
 	TargetAddressRangeList.cpp
 	ValueLocation.cpp
 

src/apps/debugger/controllers/ThreadHandler.cpp

@@ -35,6 +35,7 @@
 #include "Team.h"
 #include "Tracing.h"
 #include "Value.h"
+#include "ValueLocation.h"
 #include "Worker.h"
 
 
@@ -63,7 +64,7 @@ public:
 	}
 
 	virtual void ExpressionEvaluated(ExpressionInfo* info, status_t result,
-		Value* value)
+		ExpressionResult* value)
 	{
 		fHandler->_HandleBreakpointConditionEvaluated(value);
 	}
@@ -888,14 +889,8 @@ ThreadHandler::_HandleBreakpointConditionIfNeeded(CpuState* cpuState)
 		if (listener == NULL)
 			return false;
 
-		Type* type = new(std::nothrow) SyntheticPrimitiveType(B_UINT64_TYPE);
-		if (type == NULL)
-			return false;
-
-		BReference<Type> typeReference(type, true);
-
 		ExpressionInfo* expressionInfo = new(std::nothrow) ExpressionInfo(
-			userBreakpoint->Condition(), type);
+			userBreakpoint->Condition());
 
 		if (expressionInfo == NULL)
 			return false;
@@ -921,23 +916,13 @@ ThreadHandler::_HandleBreakpointConditionIfNeeded(CpuState* cpuState)
 
 			teamLocker.Lock();
 
-			bool stop = false;
-			if (fConditionResult == NULL)
-				stop = true;
-			else {
-				BVariant value;
-				if (!fConditionResult->ToVariant(value))
-					stop = true;
-				if (!value.TypeIsInteger(value.Type()))
-					stop = true;
-				stop = value.ToBool();
-				fConditionResult->ReleaseReference();
-				fConditionResult = NULL;
-			}
-
-			if (stop)
+			if (_CheckStopCondition()) {
+				if (fConditionResult != NULL) {
+					fConditionResult->ReleaseReference();
+					fConditionResult = NULL;
+				}
 				return false;
-			else {
+			} else {
 				_SetThreadState(THREAD_STATE_RUNNING, NULL,
 					THREAD_STOPPED_UNKNOWN, BString());
 				fDebuggerInterface->ContinueThread(fThread->ID());
@@ -951,7 +936,7 @@ ThreadHandler::_HandleBreakpointConditionIfNeeded(CpuState* cpuState)
 
 
 void
-ThreadHandler::_HandleBreakpointConditionEvaluated(Value* value)
+ThreadHandler::_HandleBreakpointConditionEvaluated(ExpressionResult* value)
 {
 	fConditionResult = value;
 	if (fConditionResult != NULL)
@@ -960,6 +945,25 @@ ThreadHandler::_HandleBreakpointConditionEvaluated(Value* value)
 }
 
 
+bool
+ThreadHandler::_CheckStopCondition()
+{
+	// if we we're unable to properly assess the expression result
+	// in any way, fall back to behaving like an unconditional breakpoint.
+	if (fConditionResult == NULL)
+		return true;
+
+	if (fConditionResult->Kind() != EXPRESSION_RESULT_KIND_PRIMITIVE)
+		return true;
+
+	BVariant value;
+	if (!fConditionResult->PrimitiveValue()->ToVariant(value))
+		return true;
+
+	return value.ToBool();
+}
+
+
 bool
 ThreadHandler::_HasExitedFrame(target_addr_t framePointer) const
 {

src/apps/debugger/controllers/ThreadHandler.h

@@ -18,10 +18,10 @@
 
 class BreakpointManager;
 class DebuggerInterface;
+class ExpressionResult;
 class ImageDebugInfoJobListener;
 class StackFrame;
 class Statement;
-class Value;
 class Worker;
 
 
@@ -102,7 +102,8 @@ private:
 			bool				_HandleBreakpointConditionIfNeeded(
 									CpuState* cpuState);
 			void				_HandleBreakpointConditionEvaluated(
-									Value* value);
+									ExpressionResult* value);
+			bool				_CheckStopCondition();
 
 			bool				_HandleBreakpointHitStep(CpuState* cpuState);
 			bool				_HandleSingleStepStep(CpuState* cpuState);
@@ -124,7 +125,7 @@ private:
 			target_addr_t		fPreviousFrameAddress;
 			bool				fSingleStepping;
 			sem_id				fConditionWaitSem;
-			Value*				fConditionResult;
+			ExpressionResult*	fConditionResult;
 
 public:
 			ThreadHandler*		fNext;

src/apps/debugger/jobs/ExpressionEvaluationJob.cpp

@@ -19,6 +19,7 @@
 #include "Value.h"
 #include "ValueNode.h"
 #include "ValueNodeManager.h"
+#include "Variable.h"
 
 
 ExpressionEvaluationJob::ExpressionEvaluationJob(Team* team,
@@ -89,10 +90,8 @@ ExpressionEvaluationJob::Do()
 	}
 
 	ValueNode* neededNode = NULL;
-	PrimitiveType* type = dynamic_cast<PrimitiveType*>(
-		fExpressionInfo->ResultType());
 	result = fLanguage->EvaluateExpression(fExpressionInfo->Expression(),
-		type->TypeConstant(), fManager, fResultValue, neededNode);
+		fManager, fResultValue, neededNode);
 	if (neededNode != NULL) {
 		result = ResolveNodeValue(neededNode);
 		if (State() == JOB_STATE_WAITING)

src/apps/debugger/jobs/Jobs.h

@@ -19,6 +19,7 @@ class BVariant;
 class CpuState;
 class DebuggerInterface;
 class ExpressionInfo;
+class ExpressionResult;
 class Function;
 class FunctionInstance;
 class Image;
@@ -245,7 +246,7 @@ public:
 	virtual	const JobKey&		Key() const;
 	virtual	status_t			Do();
 
-			Value*				GetResultValue() const { return fResultValue; }
+			ExpressionResult*	GetResult() const { return fResultValue; }
 
 private:
 			status_t			ResolveNodeValue(ValueNode* node);
@@ -261,7 +262,7 @@ private:
 			StackFrame*			fFrame;
 			Thread*				fThread;
 			ValueNodeManager*	fManager;
-			Value*				fResultValue;
+			ExpressionResult*	fResultValue;
 };
 
 

src/apps/debugger/model/ExpressionInfo.cpp

@@ -6,70 +6,123 @@
 
 #include "ExpressionInfo.h"
 
-#include "Type.h"
+#include "Value.h"
+#include "ValueNode.h"
+
+
+// #pragma mark - ExpressionResult
+
+
+ExpressionResult::ExpressionResult()
+	:
+	fResultKind(EXPRESSION_RESULT_KIND_UNKNOWN),
+	fPrimitiveValue(NULL),
+	fValueNodeValue(NULL)
+{
+}
+
+
+ExpressionResult::~ExpressionResult()
+{
+	if (fPrimitiveValue != NULL)
+		fPrimitiveValue->ReleaseReference();
+
+	if (fValueNodeValue != NULL)
+		fValueNodeValue->ReleaseReference();
+}
+
+
+void
+ExpressionResult::SetToPrimitive(Value* value)
+{
+	_Unset();
+
+	fPrimitiveValue = value;
+	if (fPrimitiveValue != NULL) {
+		fPrimitiveValue->AcquireReference();
+		fResultKind = EXPRESSION_RESULT_KIND_PRIMITIVE;
+	}
+}
+
+
+void
+ExpressionResult::SetToValueNode(ValueNodeChild* child)
+{
+	_Unset();
+
+	fValueNodeValue = child;
+	if (fValueNodeValue != NULL) {
+		fValueNodeValue->AcquireReference();
+		fResultKind = EXPRESSION_RESULT_KIND_VALUE_NODE;
+	}
+
+	// if the child has a node with a resolved value, store
+	// it as a primitive, so the consumer of the expression
+	// can use it as-is if desired.
+
+	ValueNode* node = child->Node();
+	if (node == NULL)
+		return;
+
+	fPrimitiveValue = node->GetValue();
+	if (fPrimitiveValue != NULL)
+		fPrimitiveValue->AcquireReference();
+}
+
+
+void
+ExpressionResult::_Unset()
+{
+	if (fPrimitiveValue != NULL) {
+		fPrimitiveValue->ReleaseReference();
+		fPrimitiveValue = NULL;
+	}
+
+	if (fValueNodeValue != NULL) {
+		fValueNodeValue->ReleaseReference();
+		fValueNodeValue = NULL;
+	}
+
+	fResultKind = EXPRESSION_RESULT_KIND_UNKNOWN;
+}
+
+
+// #pragma mark - ExpressionInfo
 
 
 ExpressionInfo::ExpressionInfo()
 	:
-	fExpression(),
-	fResultType(NULL)
+	fExpression()
 {
 }
 
 
 ExpressionInfo::ExpressionInfo(const ExpressionInfo& other)
 	:
-	fExpression(other.fExpression),
-	fResultType(other.fResultType)
+	fExpression(other.fExpression)
 {
-	if (fResultType != NULL)
-		fResultType->AcquireReference();
 }
 
 
 ExpressionInfo::~ExpressionInfo()
 {
-	SetResultType(NULL);
 }
 
 
-ExpressionInfo::ExpressionInfo(const BString& expression, Type* resultType)
+ExpressionInfo::ExpressionInfo(const BString& expression)
 	:
-	fExpression(expression),
-	fResultType(resultType)
+	fExpression(expression)
 {
-	if (resultType != NULL)
-		resultType->AcquireReference();
 }
 
 
 void
-ExpressionInfo::SetTo(const BString& expression, Type* resultType)
-{
-	SetExpression(expression);
-	SetResultType(resultType);
-}
-
-
-void
-ExpressionInfo::SetExpression(const BString& expression)
+ExpressionInfo::SetTo(const BString& expression)
 {
 	fExpression = expression;
 }
 
 
-void
-ExpressionInfo::SetResultType(Type* resultType)
-{
-	if (fResultType != NULL)
-		fResultType->ReleaseReference();
-
-	fResultType = resultType;
-	if (fResultType != NULL)
-		fResultType->AcquireReference();
-}
-
-
 void
 ExpressionInfo::AddListener(Listener* listener)
 {
@@ -85,7 +138,8 @@ ExpressionInfo::RemoveListener(Listener* listener)
 
 
 void
-ExpressionInfo::NotifyExpressionEvaluated(status_t result, Value* value)
+ExpressionInfo::NotifyExpressionEvaluated(status_t result,
+	ExpressionResult* value)
 {
 	for (ListenerList::Iterator it = fListeners.GetIterator();
 			Listener* listener = it.Next();) {

src/apps/debugger/model/ExpressionInfo.h

@@ -10,9 +10,44 @@
 
 #include <Referenceable.h>
 #include <util/DoublyLinkedList.h>
+#include <Variant.h>
+
 
-class Type;
 class Value;
+class ValueNodeChild;
+
+
+enum expression_result_kind {
+	EXPRESSION_RESULT_KIND_UNKNOWN = 0,
+	EXPRESSION_RESULT_KIND_PRIMITIVE,
+	EXPRESSION_RESULT_KIND_VALUE_NODE
+};
+
+
+class ExpressionResult : public BReferenceable {
+public:
+								ExpressionResult();
+	virtual						~ExpressionResult();
+
+
+	expression_result_kind		Kind() const { return fResultKind; }
+
+			Value*				PrimitiveValue() const
+									{ return fPrimitiveValue; }
+			ValueNodeChild*		ValueNodeValue() const
+									{ return fValueNodeValue; }
+
+	void						SetToPrimitive(Value* value);
+	void						SetToValueNode(ValueNodeChild* child);
+
+private:
+	void						_Unset();
+
+private:
+	expression_result_kind		fResultKind;
+	Value*						fPrimitiveValue;
+	ValueNodeChild*				fValueNodeValue;
+};
 
 
 class ExpressionInfo : public BReferenceable {
@@ -22,31 +57,24 @@ public:
 public:
 								ExpressionInfo();
 								ExpressionInfo(const ExpressionInfo& other);
-								ExpressionInfo(const BString& expression,
-									Type* resultType);
+								ExpressionInfo(const BString& expression);
 	virtual						~ExpressionInfo();
 
-			void				SetTo(const BString& expression,
-									Type* resultType);
+			void				SetTo(const BString& expression);
 
 			const BString&		Expression() const		{ return fExpression; }
-			void 				SetExpression(const BString& expression);
-
-			Type*				ResultType() const	{ return fResultType; }
-			void				SetResultType(Type* resultType);
 
 			void				AddListener(Listener* listener);
 			void				RemoveListener(Listener* listener);
 
 			void				NotifyExpressionEvaluated(status_t result,
-									Value* value);
+									ExpressionResult* value);
 
 private:
 			typedef 			DoublyLinkedList<Listener> ListenerList;
 
 private:
 			BString				fExpression;
-			Type*				fResultType;
 			ListenerList		fListeners;
 };
 
@@ -56,7 +84,8 @@ public:
 	virtual						~Listener();
 
 	virtual	void				ExpressionEvaluated(ExpressionInfo* info,
-									status_t result, Value* value) = 0;
+									status_t result,
+									ExpressionResult* value) = 0;
 };
 
 

src/apps/debugger/source_language/CLanguageFamily.cpp

@@ -11,11 +11,9 @@
 #include <stdlib.h>
 
 #include "CLanguageExpressionEvaluator.h"
-#include "FloatValue.h"
-#include "IntegerValue.h"
-#include "Number.h"
-#include "StringValue.h"
+#include "ExpressionInfo.h"
 #include "TeamTypeInformation.h"
+#include "StringValue.h"
 #include "Type.h"
 #include "TypeLookupConstraints.h"
 
@@ -167,46 +165,28 @@ CLanguageFamily::ParseTypeExpression(const BString& expression,
 
 
 status_t
-CLanguageFamily::EvaluateExpression(const BString& expression, type_code type,
-	ValueNodeManager* manager, Value*& _output, ValueNode*& _neededNode)
+CLanguageFamily::EvaluateExpression(const BString& expression,
+	ValueNodeManager* manager, ExpressionResult*& _output,
+	ValueNode*& _neededNode)
 {
 	_output = NULL;
 	_neededNode = NULL;
 	CLanguageExpressionEvaluator evaluator;
-	Number result;
 	try {
-		result = evaluator.Evaluate(expression, type, manager);
-		BVariant resultValue = result.GetValue();
-		switch (type) {
-			case B_INT8_TYPE:
-			case B_UINT8_TYPE:
-			case B_INT16_TYPE:
-			case B_UINT16_TYPE:
-			case B_INT32_TYPE:
-			case B_UINT32_TYPE:
-			case B_INT64_TYPE:
-			case B_UINT64_TYPE:
-				_output = new(std::nothrow) IntegerValue(resultValue);
-				break;
-
-			case B_FLOAT_TYPE:
-				_output = new(std::nothrow) FloatValue(resultValue.ToFloat());
-				break;
-
-			case B_DOUBLE_TYPE:
-				_output = new(std::nothrow) FloatValue(resultValue.ToDouble());
-				break;
-		}
-
-		if (_output == NULL)
-			return B_NO_MEMORY;
-
+		_output = evaluator.Evaluate(expression, manager);
 		return B_OK;
 	} catch (ParseException ex) {
-		BString stringValue;
-		stringValue.SetToFormat("Parse error at position %" B_PRId32 ": %s",
+		BString error;
+		error.SetToFormat("Parse error at position %" B_PRId32 ": %s",
 			ex.position, ex.message.String());
-		_output = new(std::nothrow) StringValue(stringValue);
+		StringValue* value = new(std::nothrow) StringValue(error.String());
+		if (value == NULL)
+			return B_NO_MEMORY;
+		BReference<Value> valueReference(value, true);
+		_output = new(std::nothrow) ExpressionResult();
+		if (_output == NULL)
+			return B_NO_MEMORY;
+		_output->SetToPrimitive(value);
 		return B_BAD_DATA;
 	} catch (ValueNeededException ex) {
 		_neededNode = ex.value;

src/apps/debugger/source_language/CLanguageFamily.h

@@ -22,8 +22,9 @@ public:
 									Type*& _resultType) const;
 
 	virtual	status_t			EvaluateExpression(const BString& expression,
-									type_code type, ValueNodeManager* manager,
-									Value*& _output, ValueNode*& _neededNode);
+									ValueNodeManager* manager,
+									ExpressionResult*& _output,
+									ValueNode*& _neededNode);
 
 protected:
 	virtual	bool				IsModifierValid(char modifier) const = 0;

src/apps/debugger/source_language/SourceLanguage.cpp

@@ -30,7 +30,7 @@ SourceLanguage::ParseTypeExpression(const BString& expression,
 
 status_t
 SourceLanguage::EvaluateExpression(const BString& expression,
-	type_code type, ValueNodeManager* manager, Value*& _resultValue,
+	ValueNodeManager* manager, ExpressionResult*& _resultValue,
 	ValueNode*& _neededNode)
 {
 	return B_NOT_SUPPORTED;

src/apps/debugger/source_language/SourceLanguage.h

@@ -11,10 +11,10 @@
 
 
 class BString;
+class ExpressionResult;
 class SyntaxHighlighter;
 class TeamTypeInformation;
 class Type;
-class Value;
 class ValueNode;
 class ValueNodeManager;
 
@@ -34,8 +34,9 @@ public:
 									Type*& _resultType) const;
 
 	virtual	status_t			EvaluateExpression(const BString& expression,
-									type_code type, ValueNodeManager* manager,
-									Value*& _output, ValueNode*& _neededNode);
+									ValueNodeManager* manager,
+									ExpressionResult*& _output,
+									ValueNode*& _neededNode);
 };
 
 

src/apps/debugger/source_language/expression_evaluators/CLanguageExpressionEvaluator.h

@@ -18,6 +18,7 @@
 class ValueNode;
 class ValueNodeChild;
 class ValueNodeManager;
+class Variable;
 
 
 class ParseException {
@@ -38,6 +39,7 @@ class ParseException {
 	int32	position;
 };
 
+
 class ValueNeededException {
 public:
 	ValueNeededException(ValueNode* node)
@@ -50,6 +52,7 @@ public:
 };
 
 
+class ExpressionResult;
 class Number;
 
 
@@ -59,31 +62,28 @@ class CLanguageExpressionEvaluator {
 								CLanguageExpressionEvaluator();
 								~CLanguageExpressionEvaluator();
 
-			Number				Evaluate(const char* expressionString,
-									type_code type, ValueNodeManager* manager);
+			ExpressionResult*	Evaluate(const char* expressionString,
+									ValueNodeManager* manager);
 
  private:
+			class Operand;
 			struct Token;
 			class Tokenizer;
 
  private:
-			Number				_ParseSum();
-			Number				_ParseProduct();
-			Number				_ParsePower();
-			Number				_ParseUnary();
-			Number				_ParseIdentifier(ValueNode* parentNode = NULL);
-			Number				_ParseAtom();
+			Operand				_ParseSum();
+			Operand				_ParseProduct();
+			Operand				_ParsePower();
+			Operand				_ParseUnary();
+			Operand				_ParseIdentifier(ValueNode* parentNode = NULL);
+			Operand				_ParseAtom();
 
 			void				_EatToken(int32 type);
 
 			void				_RequestValueIfNeeded(const Token& token,
 									ValueNodeChild* child);
 
-			void				_CoerceTypeIfNeeded(const Token& token,
-									Number& _number);
-
 			Tokenizer*			fTokenizer;
-			type_code			fCurrentType;
 			ValueNodeManager*	fNodeManager;
 };
 

src/apps/debugger/types/Number.h

@@ -1,58 +0,0 @@
-/*
- * Copyright 2014, Rene Gollent, rene@gollent.com.
- * Distributed under the terms of the MIT License.
- */
-#ifndef NUMBER_H
-#define NUMBER_H
-
-#include <TypeConstants.h>
-
-#include "Variant.h"
-
-
-class BString;
-
-
-class Number {
-public:
-								Number();
-	virtual						~Number();
-								Number(type_code type, const BString& value);
-								Number(const BVariant& value);
-								Number(const Number& other);
-
-			void				SetTo(type_code type, const BString& value,
-									int32 base = 10);
-			void				SetTo(const BVariant& value);
-
-			type_code			Type() const { return fValue.Type(); }
-
-			Number&				operator=(const Number& rhs);
-			Number&				operator+=(const Number& rhs);
-			Number&				operator-=(const Number& rhs);
-			Number&				operator/=(const Number& rhs);
-			Number&				operator*=(const Number& rhs);
-			Number&				operator%=(const Number& rhs);
-
-			Number&				operator&=(const Number& rhs);
-			Number&				operator|=(const Number& rhs);
-			Number&				operator^=(const Number& rhs);
-
-			Number				operator-() const;
-			Number				operator~() const;
-
-			int					operator<(const Number& rhs) const;
-			int					operator<=(const Number& rhs) const;
-			int					operator>(const Number& rhs) const;
-			int					operator>=(const Number& rhs) const;
-			int					operator==(const Number& rhs) const;
-			int					operator!=(const Number& rhs) const;
-
-			BVariant			GetValue() const;
-
-private:
-	BVariant					fValue;
-};
-
-
-#endif	// NUMBER_H

src/apps/debugger/user_interface/cli/CliContext.cpp

@@ -12,8 +12,9 @@
 
 #include "StackTrace.h"
 #include "UserInterface.h"
-#include "Value.h"
 #include "ValueNodeManager.h"
+#include "Variable.h"
+
 
 // NOTE: This is a simple work-around for EditLine not having any kind of user
 // data field. Hence in _GetPrompt() we don't have access to the context object.
@@ -29,7 +30,7 @@ static CliContext* sCurrentContext;
 struct CliContext::Event : DoublyLinkedListLinkImpl<CliContext::Event> {
 	Event(int type, Thread* thread = NULL, TeamMemoryBlock* block = NULL,
 		ExpressionInfo* info = NULL, status_t expressionResult = B_OK,
-		Value* expressionValue = NULL)
+		ExpressionResult* expressionValue = NULL)
 		:
 		fType(type),
 		fThreadReference(thread),
@@ -65,7 +66,7 @@ struct CliContext::Event : DoublyLinkedListLinkImpl<CliContext::Event> {
 		return fExpressionResult;
 	}
 
-	Value* GetExpressionValue() const
+	ExpressionResult* GetExpressionValue() const
 	{
 		return fExpressionValue.Get();
 	}
@@ -77,7 +78,7 @@ private:
 	BReference<TeamMemoryBlock> fMemoryBlockReference;
 	BReference<ExpressionInfo> fExpressionInfo;
 	status_t			fExpressionResult;
-	BReference<Value>	fExpressionValue;
+	BReference<ExpressionResult> fExpressionValue;
 };
 
 
@@ -509,7 +510,7 @@ CliContext::ThreadStackTraceChanged(const Team::ThreadEvent& threadEvent)
 
 void
 CliContext::ExpressionEvaluated(ExpressionInfo* info, status_t result,
-	Value* value)
+	ExpressionResult* value)
 {
 	_QueueEvent(
 		new(std::nothrow) Event(EVENT_EXPRESSION_EVALUATED,

src/apps/debugger/user_interface/cli/CliContext.h

@@ -85,7 +85,7 @@ public:
 									{ return fExpressionInfo; }
 			status_t			GetExpressionResult() const
 									{ return fExpressionResult; }
-			Value*				GetExpressionValue() const
+			ExpressionResult*	GetExpressionValue() const
 									{ return fExpressionValue; }
 
 			const char*			PromptUser(const char* prompt);
@@ -120,7 +120,7 @@ private:
 
 	// ExpressionInfo::Listener
 	virtual	void				ExpressionEvaluated(ExpressionInfo* info,
-									status_t result, Value* value);
+									status_t result, ExpressionResult* value);
 
 	// ValueNodeContainer::Listener
 	virtual	void				ValueNodeChanged(ValueNodeChild* nodeChild,
@@ -160,7 +160,7 @@ private:
 
 			ExpressionInfo*		fExpressionInfo;
 			status_t			fExpressionResult;
-			Value*				fExpressionValue;
+			ExpressionResult*	fExpressionValue;
 
 			EventList			fPendingEvents;
 };

src/apps/debugger/user_interface/cli/commands/CliDumpMemoryCommand.cpp

@@ -18,12 +18,12 @@
 
 #include "CliContext.h"
 #include "CppLanguage.h"
-#include "SyntheticPrimitiveType.h"
 #include "Team.h"
 #include "TeamMemoryBlock.h"
 #include "UiUtils.h"
 #include "UserInterface.h"
 #include "Value.h"
+#include "Variable.h"
 
 
 CliDumpMemoryCommand::CliDumpMemoryCommand()
@@ -60,22 +60,7 @@ CliDumpMemoryCommand::Execute(int argc, const char* const* argv,
 	ExpressionInfo* info = context.GetExpressionInfo();
 
 	target_addr_t address = 0;
-
-	PrimitiveType* type = dynamic_cast<PrimitiveType*>(info->ResultType());
-	if (type == NULL || type->TypeConstant() != B_UINT64_TYPE) {
-		type = new(std::nothrow) SyntheticPrimitiveType(
-		B_UINT64_TYPE);
-		if (type == NULL) {
-			printf("Unable to evaluate expression: %s\n", strerror(B_NO_MEMORY));
-			return;
-		}
-
-		BReference<Type> typeReference(type, true);
-
-		info->SetResultType(type);
-	}
-
-	info->SetExpression(argv[1]);
+	info->SetTo(argv[1]);
 
 	context.GetUserInterfaceListener()->ExpressionEvaluationRequested(
 		fLanguage, info);
@@ -84,14 +69,17 @@ CliDumpMemoryCommand::Execute(int argc, const char* const* argv,
 		return;
 
 	BString errorMessage;
-	Value* value = context.GetExpressionValue();
-	if (value != NULL) {
-		BVariant variantValue;
-		value->ToVariant(variantValue);
-		if (variantValue.Type() == B_UINT64_TYPE)
-			address = variantValue.ToUInt64();
-		else
-			value->ToString(errorMessage);
+	ExpressionResult* result = context.GetExpressionValue();
+	if (result != NULL) {
+		if (result->Kind() == EXPRESSION_RESULT_KIND_PRIMITIVE) {
+			Value* value = result->PrimitiveValue();
+			BVariant variantValue;
+			value->ToVariant(variantValue);
+			if (variantValue.Type() == B_STRING_TYPE)
+				errorMessage.SetTo(variantValue.ToString());
+			else
+				address = variantValue.ToUInt64();
+		}
 	} else
 		errorMessage = strerror(context.GetExpressionResult());
 

src/apps/debugger/user_interface/gui/inspector_window/InspectorWindow.cpp

@@ -19,12 +19,11 @@
 #include "Architecture.h"
 #include "CppLanguage.h"
 #include "GuiTeamUiSettings.h"
+#include "IntegerValue.h"
 #include "MemoryView.h"
 #include "MessageCodes.h"
-#include "SyntheticPrimitiveType.h"
 #include "Team.h"
 #include "UserInterface.h"
-#include "Value.h"
 
 
 enum {
@@ -94,9 +93,7 @@ void
 InspectorWindow::_Init()
 {
 	fLanguage = new CppLanguage();
-	::Type* type = new SyntheticPrimitiveType(B_UINT64_TYPE);
-	BReference< ::Type> typeReference(type);
-	fExpressionInfo = new ExpressionInfo(NULL, type);
+	fExpressionInfo = new ExpressionInfo();
 	fExpressionInfo->AddListener(this);
 
 	BScrollView* scrollView;
@@ -236,7 +233,7 @@ InspectorWindow::MessageReceived(BMessage* message)
 				if (fAddressInput->TextView()->TextLength() == 0)
 					break;
 
-				fExpressionInfo->SetExpression(fAddressInput->Text());
+				fExpressionInfo->SetTo(fAddressInput->Text());
 
 				fListener->ExpressionEvaluationRequested(fLanguage,
 					fExpressionInfo);
@@ -247,18 +244,22 @@ InspectorWindow::MessageReceived(BMessage* message)
 		case MSG_EXPRESSION_EVALUATED:
 		{
 			BString errorMessage;
-			BReference<Value> reference;
-			Value* value = NULL;
+			BReference<ExpressionResult> reference;
+			ExpressionResult* value = NULL;
 			if (message->FindPointer("value",
 					reinterpret_cast<void**>(&value)) == B_OK) {
 				reference.SetTo(value, true);
-				BVariant variant;
-				value->ToVariant(variant);
-				if (variant.Type() == B_UINT64_TYPE) {
-					_SetToAddress(variant.ToUInt64());
-					break;
-				} else
-					value->ToString(errorMessage);
+				if (value->Kind() == EXPRESSION_RESULT_KIND_PRIMITIVE) {
+					Value* primitive = value->PrimitiveValue();
+					BVariant variantValue;
+					primitive->ToVariant(variantValue);
+					if (variantValue.Type() == B_STRING_TYPE) {
+						errorMessage.SetTo(variantValue.ToString());
+					} else {
+						_SetToAddress(variantValue.ToUInt64());
+						break;
+					}
+				}
 			} else {
 				status_t result = message->FindInt32("result");
 				errorMessage.SetToFormat("Failed to evaluate expression: %s",
@@ -385,11 +386,11 @@ InspectorWindow::TargetAddressChanged(target_addr_t address)
 
 void
 InspectorWindow::ExpressionEvaluated(ExpressionInfo* info, status_t result,
-	Value* value)
+	ExpressionResult* value)
 {
 	BMessage message(MSG_EXPRESSION_EVALUATED);
 	message.AddInt32("result", result);
-	BReference<Value> reference;
+	BReference<ExpressionResult> reference;
 	if (value != NULL) {
 		reference.SetTo(value);
 		message.AddPointer("value", value);

src/apps/debugger/user_interface/gui/inspector_window/InspectorWindow.h

@@ -55,7 +55,7 @@ public:
 
 	// ExpressionInfo::Listener
 	virtual	void				ExpressionEvaluated(ExpressionInfo* info,
-									status_t result, Value* value);
+									status_t result, ExpressionResult* value);
 
 			status_t			LoadSettings(
 									const GuiTeamUiSettings& settings);

src/apps/debugger/user_interface/gui/team_window/ExpressionEvaluationWindow.cpp

@@ -14,6 +14,7 @@
 
 #include "AutoLocker.h"
 
+#include "IntegerValue.h"
 #include "MessageCodes.h"
 #include "SourceLanguage.h"
 #include "StackFrame.h"
@@ -21,12 +22,6 @@
 #include "Thread.h"
 #include "UiUtils.h"
 #include "UserInterface.h"
-#include "Value.h"
-
-
-enum {
-	MSG_CHANGE_EVALUATION_TYPE = 'chet'
-};
 
 
 ExpressionEvaluationWindow::ExpressionEvaluationWindow(
@@ -91,9 +86,8 @@ ExpressionEvaluationWindow::Create(SourceLanguage* language, StackFrame* frame,
 void
 ExpressionEvaluationWindow::_Init()
 {
-	::Type* type = new SyntheticPrimitiveType(B_INT64_TYPE);
-	BReference< ::Type> typeReference(type, true);
-	fExpressionInfo = new ExpressionInfo(NULL, type);
+	fExpressionInfo = new ExpressionInfo;
+	fExpressionInfo->AddListener(this);
 
 	fExpressionInput = new BTextControl("Expression:", NULL,
 		new BMessage(MSG_EVALUATE_EXPRESSION));
@@ -107,16 +101,11 @@ ExpressionEvaluationWindow::_Init()
 	fExpressionOutput->SetExplicitMaxSize(BSize(B_SIZE_UNLIMITED,
 			B_SIZE_UNSET));
 
-	BMenuField* typeField = new BMenuField("Type:", _BuildTypesMenu());
-	typeField->Menu()->SetTargetForItems(this);
-
 	BLayoutBuilder::Group<>(this, B_VERTICAL)
 		.SetInsets(B_USE_DEFAULT_SPACING)
 		.AddGroup(B_HORIZONTAL, 4.0f)
 			.Add(labelItem)
 			.Add(inputItem)
-			.Add(typeField->CreateLabelLayoutItem())
-			.Add(typeField->CreateMenuBarLayoutItem())
 		.End()
 		.AddGroup(B_HORIZONTAL, 4.0f)
 			.Add(new BStringView("OutputLabelView", "Result:"))
@@ -130,54 +119,18 @@ ExpressionEvaluationWindow::_Init()
 
 	fExpressionInput->SetTarget(this);
 	fEvaluateButton->SetTarget(this);
+	fEvaluateButton->MakeDefault(true);
 	fExpressionInput->TextView()->MakeFocus(true);
 }
 
 
-BMenu*
-ExpressionEvaluationWindow::_BuildTypesMenu()
-{
-	BMenu* menu = new BMenu("Types");
-	menu->SetLabelFromMarked(true);
-
-	_AddMenuItemForType(menu, B_INT8_TYPE);
-	_AddMenuItemForType(menu, B_UINT8_TYPE);
-	_AddMenuItemForType(menu, B_INT16_TYPE);
-	_AddMenuItemForType(menu, B_UINT16_TYPE);
-	_AddMenuItemForType(menu, B_INT32_TYPE);
-	_AddMenuItemForType(menu, B_UINT32_TYPE);
-	BMenuItem* item = _AddMenuItemForType(menu, B_INT64_TYPE);
-	if (item != NULL)
-		item->SetMarked(true);
-
-	_AddMenuItemForType(menu, B_UINT64_TYPE);
-	_AddMenuItemForType(menu, B_FLOAT_TYPE);
-	_AddMenuItemForType(menu, B_DOUBLE_TYPE);
-
-	return menu;
-}
-
-
-BMenuItem*
-ExpressionEvaluationWindow::_AddMenuItemForType(BMenu* menu, type_code type)
-{
-	BMessage *message = new BMessage(MSG_CHANGE_EVALUATION_TYPE);
-	message->AddInt32("type", type);
-
-	BMenuItem* item = new BMenuItem(UiUtils::TypeCodeToString(type), message);
-	menu->AddItem(item);
-
-	return item;
-}
-
-
 void
 ExpressionEvaluationWindow::ExpressionEvaluated(ExpressionInfo* info,
-	status_t result, Value* value)
+	status_t result, ExpressionResult* value)
 {
 	BMessage message(MSG_EXPRESSION_EVALUATED);
 	message.AddInt32("result", result);
-	BReference<Value> reference;
+	BReference<ExpressionResult> reference;
 	if (value != NULL) {
 		message.AddPointer("value", value);
 		reference.SetTo(value);
@@ -215,35 +168,16 @@ ExpressionEvaluationWindow::MessageReceived(BMessage* message)
 			if (fExpressionInput->TextView()->TextLength() == 0)
 				break;
 
-			fExpressionInfo->SetExpression(fExpressionInput->Text());
+			fExpressionInfo->SetTo(fExpressionInput->Text());
 
 			fListener->ExpressionEvaluationRequested(fLanguage,
 				fExpressionInfo, fStackFrame, fThread);
 			break;
 		}
-
-		case MSG_CHANGE_EVALUATION_TYPE:
-		{
-			uint32 typeConstant = message->FindInt32("type");
-			PrimitiveType* type = dynamic_cast<PrimitiveType*>(
-				fExpressionInfo->ResultType());
-			if (type->TypeConstant() == typeConstant)
-				break;
-
-			type = new(std::nothrow) SyntheticPrimitiveType(
-				typeConstant);
-			if (type == NULL)
-				break;
-
-			BReference< ::Type> typeReference(type, true);
-			fExpressionInfo->SetResultType(type);
-			break;
-		}
-
 		case MSG_EXPRESSION_EVALUATED:
 		{
-			Value* value = NULL;
-			BReference<Value> reference;
+			ExpressionResult* value = NULL;
+			BReference<ExpressionResult> reference;
 			if (message->FindPointer("value",
 				reinterpret_cast<void**>(&value)) == B_OK) {
 				reference.SetTo(value, true);
@@ -251,14 +185,20 @@ ExpressionEvaluationWindow::MessageReceived(BMessage* message)
 
 			BString outputText;
 			if (value != NULL) {
-				BVariant variantValue;
-				value->ToVariant(variantValue);
-				if (variantValue.TypeIsInteger(variantValue.Type())) {
-					value->ToString(outputText);
-					outputText.SetToFormat("%#" B_PRIx64 " (%s)",
-						variantValue.ToUInt64(), outputText.String());
-				} else
-					value->ToString(outputText);
+				if (value->Kind() == EXPRESSION_RESULT_KIND_PRIMITIVE) {
+					Value* primitive = value->PrimitiveValue();
+					if (dynamic_cast<IntegerValue*>(primitive) != NULL) {
+						BVariant variantValue;
+						primitive->ToVariant(variantValue);
+						primitive->ToString(outputText);
+						outputText.SetToFormat("%#" B_PRIx64 " (%s)",
+							variantValue.ToUInt64(), outputText.String());
+					} else
+						primitive->ToString(outputText);
+				} else {
+					outputText.SetToFormat("Unsupported result type: %d",
+						value->Kind());
+				}
 			} else {
 				status_t result;
 				if (message->FindInt32("result", &result) != B_OK)
@@ -271,8 +211,6 @@ ExpressionEvaluationWindow::MessageReceived(BMessage* message)
 			fExpressionOutput->SetText(outputText);
 			break;
 		}
-
-
 		default:
 			BWindow::MessageReceived(message);
 			break;

src/apps/debugger/user_interface/gui/team_window/ExpressionEvaluationWindow.h

@@ -9,16 +9,12 @@
 #include <Window.h>
 
 #include "ExpressionInfo.h"
-#include "types/Types.h"
 
 
-class BMenu;
-class BMenuItem;
 class BButton;
 class BStringView;
 class BTextControl;
 class Thread;
-class PrimitiveType;
 class SourceLanguage;
 class StackFrame;
 class UserInterfaceListener;
@@ -53,13 +49,10 @@ public:
 
 private:
 			void	 			_Init();
-			BMenu*				_BuildTypesMenu();
-			BMenuItem*			_AddMenuItemForType(BMenu* menu,
-									type_code type);
 
 	// ExpressionInfo::Listener
 	virtual	void				ExpressionEvaluated(ExpressionInfo* info,
-									status_t result, Value* value);
+									status_t result, ExpressionResult* value);
 
 private:
 			SourceLanguage*		fLanguage;

src/apps/debugger/user_interface/gui/team_window/ExpressionPromptWindow.cpp

@@ -6,17 +6,10 @@
 
 #include <Button.h>
 #include <LayoutBuilder.h>
-#include <MenuField.h>
 #include <String.h>
 #include <TextControl.h>
 
 #include "MessageCodes.h"
-#include "UiUtils.h"
-
-
-enum {
-	MSG_CHANGE_EVALUATION_TYPE = 'chet',
-};
 
 
 ExpressionPromptWindow::ExpressionPromptWindow(BHandler* addTarget,
@@ -28,8 +21,7 @@ ExpressionPromptWindow::ExpressionPromptWindow(BHandler* addTarget,
 	fCancelButton(NULL),
 	fAddButton(NULL),
 	fAddTarget(addTarget),
-	fCloseTarget(closeTarget),
-	fCurrentType(B_INT64_TYPE)
+	fCloseTarget(closeTarget)
 {
 }
 
@@ -68,16 +60,11 @@ ExpressionPromptWindow::_Init()
 	inputItem->SetExplicitMaxSize(BSize(B_SIZE_UNLIMITED, B_SIZE_UNSET));
 	labelItem->View()->SetViewColor(ui_color(B_PANEL_BACKGROUND_COLOR));
 
-	BMenuField* typeField = new BMenuField("Type:", _BuildTypesMenu());
-	typeField->Menu()->SetTargetForItems(this);
-
 	BLayoutBuilder::Group<>(this, B_VERTICAL)
 		.SetInsets(B_USE_DEFAULT_SPACING)
 		.AddGroup(B_HORIZONTAL, 4.0f)
 			.Add(labelItem)
 			.Add(inputItem)
-			.Add(typeField->CreateLabelLayoutItem())
-			.Add(typeField->CreateMenuBarLayoutItem())
 		.End()
 		.AddGroup(B_HORIZONTAL, 4.0f)
 			.AddGlue()
@@ -95,43 +82,6 @@ ExpressionPromptWindow::_Init()
 }
 
 
-BMenu*
-ExpressionPromptWindow::_BuildTypesMenu()
-{
-	BMenu* menu = new BMenu("Types");
-	menu->SetLabelFromMarked(true);
-
-	_AddMenuItemForType(menu, B_INT8_TYPE);
-	_AddMenuItemForType(menu, B_UINT8_TYPE);
-	_AddMenuItemForType(menu, B_INT16_TYPE);
-	_AddMenuItemForType(menu, B_UINT16_TYPE);
-	_AddMenuItemForType(menu, B_INT32_TYPE);
-	_AddMenuItemForType(menu, B_UINT32_TYPE);
-	BMenuItem* item = _AddMenuItemForType(menu, B_INT64_TYPE);
-	if (item != NULL)
-		item->SetMarked(true);
-
-	_AddMenuItemForType(menu, B_UINT64_TYPE);
-	_AddMenuItemForType(menu, B_FLOAT_TYPE);
-	_AddMenuItemForType(menu, B_DOUBLE_TYPE);
-
-	return menu;
-}
-
-
-BMenuItem*
-ExpressionPromptWindow::_AddMenuItemForType(BMenu* menu, type_code type)
-{
-	BMessage *message = new BMessage(MSG_CHANGE_EVALUATION_TYPE);
-	message->AddInt32("type", type);
-
-	BMenuItem* item = new BMenuItem(UiUtils::TypeCodeToString(type), message);
-	menu->AddItem(item);
-
-	return item;
-}
-
-
 void
 ExpressionPromptWindow::Show()
 {
@@ -154,17 +104,10 @@ void
 ExpressionPromptWindow::MessageReceived(BMessage* message)
 {
 	switch (message->what) {
-		case MSG_CHANGE_EVALUATION_TYPE:
-		{
-			fCurrentType = message->FindInt32("type");
-			break;
-		}
-
 		case MSG_ADD_NEW_EXPRESSION:
 		{
 			BMessage addMessage(MSG_EXPRESSION_PROMPT_WINDOW_CLOSED);
 			addMessage.AddString("expression", fExpressionInput->Text());
-			addMessage.AddInt32("type", fCurrentType);
 			addMessage.AddMessenger("target", BMessenger(fAddTarget));
 
 			BMessenger(fCloseTarget).SendMessage(&addMessage);

src/apps/debugger/user_interface/gui/team_window/ExpressionPromptWindow.h

@@ -10,8 +10,6 @@
 
 
 class BButton;
-class BMenu;
-class BMenuItem;
 class BTextControl;
 
 
@@ -35,9 +33,6 @@ public:
 
 private:
 			void	 			_Init();
-			BMenu*				_BuildTypesMenu();
-			BMenuItem*			_AddMenuItemForType(BMenu* menu,
-									type_code type);
 
 private:
 			BTextControl*		fExpressionInput;
@@ -45,7 +40,6 @@ private:
 			BButton*			fAddButton;
 			BHandler*			fAddTarget;
 			BHandler*			fCloseTarget;
-			type_code			fCurrentType;
 };
 
 #endif // EXPRESSION_PROMPT_WINDOW_H

src/apps/debugger/user_interface/gui/team_window/TeamWindow.cpp

@@ -406,15 +406,12 @@ TeamWindow::MessageReceived(BMessage* message)
 			fExpressionPromptWindow = NULL;
 
 			const char* expression;
-			int32 type;
 			BMessenger targetMessenger;
 			if (message->FindString("expression", &expression) == B_OK
-				&& message->FindInt32("type", &type) == B_OK
 				&& message->FindMessenger("target", &targetMessenger)
 					== B_OK) {
 				BMessage addMessage(MSG_ADD_NEW_EXPRESSION);
 				addMessage.AddString("expression", expression);
-				addMessage.AddInt32("type", type);
 
 				targetMessenger.SendMessage(&addMessage);
 			}

src/apps/debugger/user_interface/gui/team_window/VariablesView.cpp

@@ -1944,18 +1944,11 @@ VariablesView::MessageReceived(BMessage* message)
 		case MSG_ADD_NEW_EXPRESSION:
 		{
 			const char* expression;
-			int32 type;
-			Type* resultType;
-			if (message->FindString("expression", &expression) != B_OK
-				|| message->FindInt32("type", &type) != B_OK
-				|| _GetTypeForTypeCode(type, resultType) != B_OK) {
+			if (message->FindString("expression", &expression) != B_OK)
 				break;
-			}
-
-			BReference<Type> typeReference(resultType, true);
 
 			ExpressionInfo* info;
-			status_t error = _AddExpression(expression, resultType, info);
+			status_t error = _AddExpression(expression, info);
 			if (error != B_OK) {
 				// TODO: notify user of failure
 				break;
@@ -1969,14 +1962,14 @@ VariablesView::MessageReceived(BMessage* message)
 		{
 			ExpressionInfo* info;
 			status_t result;
-			Value* value = NULL;
+			ExpressionResult* value = NULL;
 			if (message->FindPointer("info",
 					reinterpret_cast<void**>(&info)) != B_OK
 				|| message->FindInt32("result", &result) != B_OK) {
 				break;
 			}
 
-			BReference<Value> valueReference;
+			BReference<ExpressionResult> valueReference;
 			if (message->FindPointer("value", reinterpret_cast<void**>(&value))
 				== B_OK) {
 				valueReference.SetTo(value, true);
@@ -2231,12 +2224,12 @@ VariablesView::TreeTableCellMouseDown(TreeTable* table,
 
 void
 VariablesView::ExpressionEvaluated(ExpressionInfo* info, status_t result,
-	Value* value)
+	ExpressionResult* value)
 {
 	BMessage message(MSG_EXPRESSION_EVALUATED);
 	message.AddPointer("info", info);
 	message.AddInt32("result", result);
-	BReference<Value> valueReference;
+	BReference<ExpressionResult> valueReference;
 
 	if (value != NULL) {
 		valueReference.SetTo(value);
@@ -2417,6 +2410,7 @@ VariablesView::_GetContextActionsForNode(ModelNode* node,
 	BPrivate::ObjectDeleter<ContextActionList> postActionListDeleter(
 		_postActions);
 
+#if 0
 	result = _AddContextAction("Add watch expression" B_UTF8_ELLIPSIS,
 		MSG_ADD_WATCH_EXPRESSION, _postActions, message);
 	if (result != B_OK)
@@ -2429,6 +2423,7 @@ VariablesView::_GetContextActionsForNode(ModelNode* node,
 			return result;
 		message->AddPointer("node", node);
 	}
+#endif
 
 	preActionListDeleter.Detach();
 	postActionListDeleter.Detach();
@@ -2748,8 +2743,7 @@ VariablesView::_CopyVariableValueToClipboard()
 
 
 status_t
-VariablesView::_AddExpression(const char* expression, Type* resultType,
-	ExpressionInfo*& _info)
+VariablesView::_AddExpression(const char* expression, ExpressionInfo*& _info)
 {
 	// if our stack frame doesn't have an associated function,
 	// we can't add an expression
@@ -2775,8 +2769,7 @@ VariablesView::_AddExpression(const char* expression, Type* resultType,
 		}
 	}
 
-	ExpressionInfo* info = new(std::nothrow) ExpressionInfo(expression,
-		resultType);
+	ExpressionInfo* info = new(std::nothrow) ExpressionInfo(expression);
 
 	if (info == NULL)
 		return B_NO_MEMORY;
@@ -2829,7 +2822,7 @@ VariablesView::_RemoveExpression(ModelNode* node)
 status_t
 VariablesView::_AddExpressionNode(ExpressionInfo* info)
 {
-	Type* type = info->ResultType();
+#if 0
 	ExpressionValueNodeChild* child
 		= new(std::nothrow) ExpressionValueNodeChild(info->Expression(), type);
 	if (child == NULL)
@@ -2859,7 +2852,10 @@ VariablesView::_AddExpressionNode(ExpressionInfo* info)
 
 	expressionNodeReference.Detach();
 	modelNodeReference.Detach();
+
 	return B_OK;
+#endif
+	return B_NOT_SUPPORTED;
 }
 
 
@@ -2890,7 +2886,7 @@ VariablesView::_RestoreExpressionNodes()
 
 void
 VariablesView::_SetExpressionNodeValue(ExpressionInfo* info, status_t result,
-	Value* value)
+	ExpressionResult* value)
 {
 	FunctionInstance* instance = fStackFrame->Function();
 	if (instance == NULL)
@@ -2918,7 +2914,8 @@ VariablesView::_SetExpressionNodeValue(ExpressionInfo* info, status_t result,
 		if (child->GetExpression() != info->Expression())
 			continue;
 
-		child->Node()->SetLocationAndValue(NULL, value, result);
+		child->Node()->SetLocationAndValue(NULL, value->PrimitiveValue(),
+			result);
 		return;
 	}
 }

src/apps/debugger/user_interface/gui/team_window/VariablesView.h

@@ -66,7 +66,7 @@ private:
 
 	// ExpressionInfo::Listener
 	virtual	void				ExpressionEvaluated(ExpressionInfo* info,
-									status_t result, Value* value);
+									status_t result, ExpressionResult* value);
 
 private:
 			class ContainerListener;
@@ -110,7 +110,6 @@ private:
 			void				_CopyVariableValueToClipboard();
 
 			status_t			_AddExpression(const char* expression,
-									Type* resultType,
 									ExpressionInfo*& _info);
 			void				_RemoveExpression(ModelNode* node);
 
@@ -118,7 +117,7 @@ private:
 			void				_RestoreExpressionNodes();
 
 			void				_SetExpressionNodeValue(ExpressionInfo* info,
-									status_t result, Value* value);
+									status_t result, ExpressionResult* value);
 
 			status_t			_GetTypeForTypeCode(int32 typeCode,
 									Type*& _resultType) const;

src/apps/debugger/user_interface/gui/team_window/WatchPromptWindow.cpp

@@ -17,10 +17,10 @@
 
 #include "Architecture.h"
 #include "CppLanguage.h"
+#include "IntegerValue.h"
 #include "MessageCodes.h"
 #include "SyntheticPrimitiveType.h"
 #include "UserInterface.h"
-#include "Value.h"
 #include "Watchpoint.h"
 
 
@@ -91,21 +91,15 @@ WatchPromptWindow::_Init()
 {
 	fLanguage = new CppLanguage();
 
-	PrimitiveType* type = new SyntheticPrimitiveType(B_UINT64_TYPE);
-	BReference<PrimitiveType> typeReference(type, true);
-
 	BString text;
 	text.SetToFormat("0x%" B_PRIx64, fInitialAddress);
 	fAddressInput = new BTextControl("Address:", text, NULL);
-	fAddressExpressionInfo = new ExpressionInfo(text, type);
+	fAddressExpressionInfo = new ExpressionInfo(text);
 	fAddressExpressionInfo->AddListener(this);
 
-	type = new SyntheticPrimitiveType(B_INT32_TYPE);
-	typeReference.SetTo(type, true);
-
 	text.SetToFormat("%" B_PRId32, fInitialLength);
 	fLengthInput = new BTextControl("Length:", text, NULL);
-	fLengthExpressionInfo = new ExpressionInfo(text, type);
+	fLengthExpressionInfo = new ExpressionInfo(text);
 	fLengthExpressionInfo->AddListener(this);
 
 	int32 maxDebugRegisters = 0;
@@ -170,11 +164,12 @@ WatchPromptWindow::Show()
 
 void
 WatchPromptWindow::ExpressionEvaluated(ExpressionInfo* info, status_t result,
-	Value* value)
+	ExpressionResult* value)
 {
 	BMessage message(MSG_EXPRESSION_EVALUATED);
 	message.AddInt32("result", result);
-	BReference<Value> reference;
+	message.AddPointer("info", info);
+	BReference<ExpressionResult> reference;
 	if (value != NULL) {
 		reference.SetTo(value);
 		message.AddPointer("value", value);
@@ -192,20 +187,32 @@ WatchPromptWindow::MessageReceived(BMessage* message)
 		case MSG_EXPRESSION_EVALUATED:
 		{
 			BString errorMessage;
-			BReference<Value> reference;
-			Value* value = NULL;
+			BReference<ExpressionResult> reference;
+			ExpressionResult* value = NULL;
+			ExpressionInfo* info = NULL;
+			if (message->FindPointer("info",
+					reinterpret_cast<void**>(&info)) != B_OK) {
+				break;
+			}
+
 			if (message->FindPointer("value",
 					reinterpret_cast<void**>(&value)) == B_OK) {
 				reference.SetTo(value, true);
-				BVariant variant;
-				value->ToVariant(variant);
-				if (variant.Type() == B_UINT64_TYPE) {
-					fRequestedAddress = variant.ToUInt64();
-					break;
-				} else if (variant.Type() == B_INT32_TYPE)
-					fRequestedLength = variant.ToInt32();
-				else
-					value->ToString(errorMessage);
+				if (value->Kind() == EXPRESSION_RESULT_KIND_PRIMITIVE) {
+					Value* primitive = value->PrimitiveValue();
+					if (dynamic_cast<IntegerValue*>(primitive) != NULL) {
+						BVariant resultVariant;
+						primitive->ToVariant(resultVariant);
+						if (info == fAddressExpressionInfo) {
+							fRequestedAddress = resultVariant.ToUInt64();
+							break;
+						} else
+							fRequestedLength = resultVariant.ToInt32();
+					}
+					else
+						primitive->ToString(errorMessage);
+				} else
+					errorMessage.SetTo("Unsupported expression result.");
 			} else {
 				status_t result = message->FindInt32("result");
 				errorMessage.SetToFormat("Failed to evaluate expression: %s",
@@ -237,11 +244,11 @@ WatchPromptWindow::MessageReceived(BMessage* message)
 			fRequestedAddress = 0;
 			fRequestedLength = 0;
 
-			fAddressExpressionInfo->SetExpression(fAddressInput->Text());
+			fAddressExpressionInfo->SetTo(fAddressInput->Text());
 			fListener->ExpressionEvaluationRequested(fLanguage,
 				fAddressExpressionInfo);
 
-			fLengthExpressionInfo->SetExpression(fLengthInput->Text());
+			fLengthExpressionInfo->SetTo(fLengthInput->Text());
 			fListener->ExpressionEvaluationRequested(fLanguage,
 				fLengthExpressionInfo);
 			break;

src/apps/debugger/user_interface/gui/team_window/WatchPromptWindow.h

@@ -43,7 +43,7 @@ public:
 
 	// ExpressionInfo::Listener
 	virtual	void				ExpressionEvaluated(ExpressionInfo* info,
-									status_t result, Value* value);
+									status_t result, ExpressionResult* value);
 
 private:
 			void	 			_Init();