From 74935056c496814a3c9d1380437812536b159203 Mon Sep 17 00:00:00 2001
From: Adrian Kummerländer
Date: Thu, 6 Feb 2014 20:53:38 +0100
Subject: Converted detail::Result into general optional_ptr type * Added set
 member method overload for easier value modification * Idea: expand
 detail::optional_ptr into general optional type

---
 src/utility.h | 32 +++++++++++++++++++-------------
 1 file changed, 19 insertions(+), 13 deletions(-)

(limited to 'src/utility.h')

diff --git a/src/utility.h b/src/utility.h
index 6342420..db33608 100644
--- a/src/utility.h
+++ b/src/utility.h
@@ -4,24 +4,30 @@
 namespace detail {
 
 template <
-	typename Value
+	typename Type
 >
-struct Result {
-	Result():
-		value_(false, Value()) { }
+class optional_ptr {
+	public:
+		typedef typename std::add_pointer<Type>::type pointer;
+		typedef Type element_type;
 
-	Result(Value value):
-		value_(true, value) { }
+		optional_ptr():
+			value_(false, nullptr) { }
 
-	inline operator bool() const {
-		return this->value_.first;
-	}
+		optional_ptr(pointer ptr):
+			value_(true, ptr) { }
 
-	inline Value get() const {
-		return this->value_.second;
-	}
+		inline operator bool() const {
+			return this->value_.first;
+		}
+
+		inline pointer get() const {
+			return this->value_.second;
+		}
+
+	private:
+		const std::pair<bool, pointer> value_;
 
-	const std::pair<bool, Value> value_;
 };
 
 }
-- 
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