From: Myun2 <myun2@nwhite.info>
Date: Wed, 8 Sep 2010 18:45:42 +0000 (+0900)
Subject: bits.hpp: bit_ptr 実装中 (_bitの内部クラス追加)
X-Git-Tag: 20111130_shapeup_prev~225
X-Git-Url: http://git.osdn.net/view?a=commitdiff_plain;h=b6f831d6be0132f01deed28efdfa4023c0e804ed;p=roast%2Froast.git

bits.hpp: bit_ptr 実装中 (_bitの内部クラス追加)
---

diff --git a/roast/include/roast/memory/bits.hpp b/roast/include/roast/memory/bits.hpp
index 53456a87..072fa55f 100644
--- a/roast/include/roast/memory/bits.hpp
+++ b/roast/include/roast/memory/bits.hpp
@@ -18,6 +18,26 @@ namespace roast
 		T* m_p;
 		size_t m_index;
 	public:
+		class _bit
+		{
+		protected:
+			bit_ptr& parent;
+		public:
+			_bit(bit_ptr& in) : parent(in) {}
+			
+			_bit operator = (bool b){ parent.set(b); return *this; }
+			operator bool(){ return parent.get(); }
+			operator char(){ return parent.get(); }
+			operator unsigned char(){ return parent.get(); }
+			operator short(){ return parent.get(); }
+			operator unsigned short(){ return parent.get(); }
+			operator int(){ return parent.get(); }
+			operator unsigned int(){ return parent.get(); }
+			operator long(){ return parent.get(); }
+			operator unsigned long(){ return parent.get(); }
+		};
+	
+	public:
 		bit_ptr(T* p, size_t index=0) : m_p(p), m_index(index) {}
 	
 		bit_ptr& operator ++(int){ m_index++; return *this; }
@@ -28,6 +48,21 @@ namespace roast
 		bit_ptr& operator -=(int n){ m_index-=n; return *this; }
 		bit_ptr& operator +(int n){ bit_ptr work=*this; work+=n; return work; }
 		bit_ptr& operator -(int n){ bit_ptr work=*this; work-=n; return work; }
+		
+		_bit operator *(){ return _bit(*this); }
+		
+		void set(bool b)
+		{
+			size_t ary_index = m_index / TypeBits;
+			size_t bit_index = m_index % TypeBits;
+			m_p[ary_index] |= (b << bit_index);
+		}
+		bool get()
+		{
+			size_t ary_index = m_index / TypeBits;
+			size_t bit_index = m_index % TypeBits;
+			return m_p[ary_index] & (1 << bit_index);
+		}
 	};
 
 	//template <unsigned int _BitCount, typename _BaseType = unsigned int>