From 15ddc29179242c6ad6f3e2cc1615cfe27083a0c0 Mon Sep 17 00:00:00 2001
From: Lynix <lynix680@gmail.com>
Date: Sun, 7 Dec 2014 03:06:12 +0100
Subject: [PATCH] Added implicit conversion to SparsePtr

Former-commit-id: 5116a5e7687706640cd5d2ef99f5c181e00ee841
---
 include/Nazara/Core/SparsePtr.hpp |  2 ++
 include/Nazara/Core/SparsePtr.inl | 20 ++++++++++++++++++++
 2 files changed, 22 insertions(+)

diff --git a/include/Nazara/Core/SparsePtr.hpp b/include/Nazara/Core/SparsePtr.hpp
index aff3460ac..94c3f249f 100644
--- a/include/Nazara/Core/SparsePtr.hpp
+++ b/include/Nazara/Core/SparsePtr.hpp
@@ -22,6 +22,7 @@ class NzSparsePtr
 		NzSparsePtr();
 		NzSparsePtr(T* ptr);
 		NzSparsePtr(VoidPtr ptr, unsigned int stride);
+		template<typename U> NzSparsePtr(const NzSparsePtr<U>& ptr);
 		NzSparsePtr(const NzSparsePtr& ptr) = default;
 		~NzSparsePtr() = default;
 
@@ -32,6 +33,7 @@ class NzSparsePtr
 		void Reset(T* ptr);
 		void Reset(VoidPtr ptr, unsigned int stride);
 		void Reset(const NzSparsePtr& ptr);
+		template<typename U> void Reset(const NzSparsePtr<U>& ptr);
 
 		void SetPtr(VoidPtr ptr);
 		void SetStride(unsigned int stride);
diff --git a/include/Nazara/Core/SparsePtr.inl b/include/Nazara/Core/SparsePtr.inl
index b98599bfd..ca0d7e328 100644
--- a/include/Nazara/Core/SparsePtr.inl
+++ b/include/Nazara/Core/SparsePtr.inl
@@ -22,6 +22,13 @@ NzSparsePtr<T>::NzSparsePtr(VoidPtr ptr, unsigned int stride)
 	Reset(ptr, stride);
 }
 
+template<typename T>
+template<typename U>
+NzSparsePtr<T>::NzSparsePtr(const NzSparsePtr<U>& ptr)
+{
+	Reset(ptr);
+}
+
 template<typename T>
 typename NzSparsePtr<T>::VoidPtr NzSparsePtr<T>::GetPtr() const
 {
@@ -62,6 +69,16 @@ void NzSparsePtr<T>::Reset(const NzSparsePtr& ptr)
 	SetStride(ptr.GetStride());
 }
 
+template<typename T>
+template<typename U>
+void NzSparsePtr<T>::Reset(const NzSparsePtr<U>& ptr)
+{
+	static_assert(std::is_convertible<U*, T*>::value, "Source type pointer cannot be implicitely converted to target type pointer");
+
+	SetPtr(static_cast<T*>(ptr.GetPtr()));
+	SetStride(ptr.GetStride());
+}
+
 template<typename T>
 void NzSparsePtr<T>::SetPtr(VoidPtr ptr)
 {
@@ -120,6 +137,7 @@ template<typename T>
 NzSparsePtr<T>& NzSparsePtr<T>::operator+=(unsigned int count)
 {
 	m_ptr += count*m_stride;
+
 	return *this;
 }
 
@@ -127,6 +145,7 @@ template<typename T>
 NzSparsePtr<T>& NzSparsePtr<T>::operator-=(unsigned int count)
 {
 	m_ptr -= count*m_stride;
+
 	return *this;
 }
 
@@ -134,6 +153,7 @@ template<typename T>
 NzSparsePtr<T>& NzSparsePtr<T>::operator++()
 {
 	m_ptr += m_stride;
+
 	return *this;
 }