From 1904b0c99ae89ceb38012e6737389796c55799de Mon Sep 17 00:00:00 2001
From: Rene Gollent <rene@gollent.com>
Date: Thu, 6 Nov 2014 22:49:45 -0500
Subject: [PATCH] Debugger: Add type subclass for artificial types.

- For expressions we need a Type object to represent their result
  type. However, this doesn't need to map to an actual DwarfType,
  as we won't need e.g. location and storage format information to
  read it out of the target team, so instead derive a simple subclass
  representing the appropriate result type.
---
 src/apps/debugger/Jamfile                     |  1 +
 .../gui/model/SyntheticPrimitiveType.cpp      | 95 +++++++++++++++++++
 .../gui/model/SyntheticPrimitiveType.h        | 44 +++++++++
 3 files changed, 140 insertions(+)
 create mode 100644 src/apps/debugger/user_interface/gui/model/SyntheticPrimitiveType.cpp
 create mode 100644 src/apps/debugger/user_interface/gui/model/SyntheticPrimitiveType.h

diff --git a/src/apps/debugger/Jamfile b/src/apps/debugger/Jamfile
index f6b0694ce63..75a30b9efe4 100644
--- a/src/apps/debugger/Jamfile
+++ b/src/apps/debugger/Jamfile
@@ -250,6 +250,7 @@ Application Debugger :
 	GraphicalUserInterface.cpp
 
 	# user_interface/gui/model
+	SyntheticPrimitiveType.cpp
 	VariablesViewState.cpp
 	VariablesViewStateHistory.cpp
 
diff --git a/src/apps/debugger/user_interface/gui/model/SyntheticPrimitiveType.cpp b/src/apps/debugger/user_interface/gui/model/SyntheticPrimitiveType.cpp
new file mode 100644
index 00000000000..52c6c78c979
--- /dev/null
+++ b/src/apps/debugger/user_interface/gui/model/SyntheticPrimitiveType.cpp
@@ -0,0 +1,95 @@
+/*
+ * Copyright 2014, Rene Gollent, rene@gollent.com.
+ * Distributed under the terms of the MIT License.
+ */
+
+
+#include "SyntheticPrimitiveType.h"
+
+#include <Variant.h>
+
+#include "UiUtils.h"
+
+
+SyntheticPrimitiveType::SyntheticPrimitiveType(uint32 typeConstant)
+	:
+	PrimitiveType(),
+	fTypeConstant(typeConstant),
+	fID(),
+	fName()
+{
+	_Init();
+}
+
+
+SyntheticPrimitiveType::~SyntheticPrimitiveType()
+{
+}
+
+
+uint32
+SyntheticPrimitiveType::TypeConstant() const
+{
+	return fTypeConstant;
+}
+
+
+image_id
+SyntheticPrimitiveType::ImageID() const
+{
+	return -1;
+}
+
+
+const BString&
+SyntheticPrimitiveType::ID() const
+{
+	return fID;
+}
+
+
+const BString&
+SyntheticPrimitiveType::Name() const
+{
+	return fName;
+}
+
+
+type_kind
+SyntheticPrimitiveType::Kind() const
+{
+	return TYPE_PRIMITIVE;
+}
+
+
+target_size_t
+SyntheticPrimitiveType::ByteSize() const
+{
+	return BVariant::SizeOfType(fTypeConstant);
+}
+
+
+status_t
+SyntheticPrimitiveType::ResolveObjectDataLocation(
+	const ValueLocation& objectLocation, ValueLocation*& _location)
+{
+	_location = NULL;
+	return B_NOT_SUPPORTED;
+}
+
+
+status_t
+SyntheticPrimitiveType::ResolveObjectDataLocation(target_addr_t objectAddress,
+	ValueLocation*& _location)
+{
+	_location = NULL;
+	return B_NOT_SUPPORTED;
+}
+
+
+void
+SyntheticPrimitiveType::_Init()
+{
+	fID.SetToFormat("%p", this);
+	fName.SetTo(UiUtils::TypeCodeToString(fTypeConstant));
+}
diff --git a/src/apps/debugger/user_interface/gui/model/SyntheticPrimitiveType.h b/src/apps/debugger/user_interface/gui/model/SyntheticPrimitiveType.h
new file mode 100644
index 00000000000..19dae5875b5
--- /dev/null
+++ b/src/apps/debugger/user_interface/gui/model/SyntheticPrimitiveType.h
@@ -0,0 +1,44 @@
+/*
+ * Copyright 2014, Rene Gollent, rene@gollent.com.
+ * Distributed under the terms of the MIT License.
+ */
+#ifndef SYNTHETIC_PRIMITIVE_TYPE_H
+#define SYNTHETIC_PRIMITIVE_TYPE_H
+
+
+#include "Type.h"
+
+#include <String.h>
+
+
+class SyntheticPrimitiveType : public PrimitiveType {
+public:
+								SyntheticPrimitiveType(uint32 typeConstant);
+	virtual						~SyntheticPrimitiveType();
+
+	virtual	uint32				TypeConstant() const;
+
+	virtual	image_id			ImageID() const;
+	virtual	const BString&		ID() const;
+	virtual	const BString&		Name() const;
+	virtual	type_kind			Kind() const;
+	virtual	target_size_t		ByteSize() const;
+
+	virtual	status_t			ResolveObjectDataLocation(
+									const ValueLocation& objectLocation,
+									ValueLocation*& _location);
+	virtual	status_t			ResolveObjectDataLocation(
+									target_addr_t objectAddress,
+									ValueLocation*& _location);
+
+private:
+	void						_Init();
+
+private:
+	uint32						fTypeConstant;
+	BString						fID;
+	BString						fName;
+};
+
+
+#endif // SYNTHETIC_PRIMITIVE_TYPE