COMMON: Add PtrList template

A PtrList is a list of pointers to objects, including automatic
deletion of these pointers.

PtrList is similar in concept to boost::ptr_list, however in a more
straight-forward manner:
- boost::ptr_list uses a std::list<void *> as storage, PtrList uses
  std::list<T *> directly
- Object access operations on boost::ptr_list return a reference, on
  PtrLst they return a pointer
- boost::ptr_list allows for automatic object cloning, PtrList does
  not

The reason for PtrList instead of boost::ptr_list is simply that
boost::ptr_list is broken for const objects. I.e.
boost::ptr_list<const Foo> won't work; it leads to a compile error.
Only boost::ptr_list<Foo> works.

src/common/ptrlist.h

@@ -0,0 +1,127 @@
+/* xoreos-tools - Tools to help with xoreos development
+ *
+ * xoreos-tools is the legal property of its developers, whose names
+ * can be found in the AUTHORS file distributed with this source
+ * distribution.
+ *
+ * xoreos-tools is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 3
+ * of the License, or (at your option) any later version.
+ *
+ * xoreos-tools is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with xoreos-tools. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+/** @file
+ *  A list storing pointer to objects, with automatic deletion.
+ */
+
+#ifndef COMMON_PTRLIST_H
+#define COMMON_PTRLIST_H
+
+#include <list>
+
+#include <boost/noncopyable.hpp>
+
+#include "src/common/deallocator.h"
+
+namespace Common {
+
+/** A list of pointer to objects, with automatic deletion.
+ *
+ *  A PtrList expects to hold sole ownership of its contents.
+ */
+template<typename T, class Deallocator = DeallocatorDefault>
+class PtrList : boost::noncopyable, public std::list<T *> {
+public:
+	~PtrList() {
+		clear();
+	}
+
+	void clear() {
+		for (typename std::list<T *>::iterator it = std::list<T *>::begin(); it != std::list<T *>::end(); ++it)
+			Deallocator::destroy(*it);
+
+		std::list<T *>::clear();
+	}
+
+	void pop_front() {
+		Deallocator::destroy(std::list<T *>::front());
+		std::list<T *>::pop_front();
+	}
+
+	void pop_back() {
+		Deallocator::destroy(std::list<T *>::back());
+		std::list<T *>::pop_back();
+	}
+
+	typename std::list<T *>::iterator erase(typename std::list<T *>::iterator position) {
+		Deallocator::destroy(*position);
+		return std::list<T *>::erase(position);
+	}
+
+	typename std::list<T *>::iterator erase(typename std::list<T *>::iterator first,
+	                                        typename std::list<T *>::iterator last) {
+
+		for (typename std::list<T *>::iterator it = std::list<T *>::begin(); it != std::list<T *>::end(); ++it)
+			Deallocator::destroy(*it);
+
+		return std::list<T *>::erase(first, last);
+	}
+
+	void resize(typename std::list<T *>::size_type n,
+	            typename std::list<T *>::value_type val = typename std::list<T *>::value_type()) {
+
+		typename std::list<T *>::size_type s = std::list<T *>::size();
+
+		if (s < n) {
+			while (s++ < n)
+				std::list<T *>::push_back(val);
+
+			return;
+		}
+
+		while (s-- > n)
+			pop_back();
+	}
+
+	void remove(const typename std::list<T *>::value_type &val) {
+		for (typename std::list<T *>::iterator it = std::list<T *>::begin(); it != std::list<T *>::end(); ++it) {
+			if (*it == val)
+				it = erase(it);
+			else
+			++it;
+		}
+	}
+
+	template<class Predicate>
+	void remove_if(Predicate pred) {
+		for (typename std::list<T *>::iterator it = std::list<T *>::begin(); it != std::list<T *>::end(); ++it) {
+			if (pred(*it))
+				it = erase(it);
+			else
+			++it;
+		}
+	}
+
+	template<class InputIterator>
+	void assign(InputIterator first, InputIterator last) {
+		clear();
+		std::list<T *>::assign(first, last);
+	}
+
+	void assign(typename std::list<T *>::size_type n, const typename std::list<T *>::value_type &val) {
+		clear();
+		std::list<T *>::assign(n, val);
+	}
+};
+
+} // End of namespace Common
+
+#endif // COMMON_PTRLIST_H

src/common/rules.mk

@@ -30,6 +30,7 @@ src_common_libcommon_la_SOURCES += \
     src/common/deallocator.h \
     src/common/scopedptr.h \
     src/common/disposableptr.h \
+    src/common/ptrlist.h \
     src/common/maths.h \
     src/common/singleton.h \
     src/common/ustring.h \