(C) An X-Ryl669 project 2007
This document describes Unlimited Zooming Interface source code. UZI stands for Unlimited Zooming Interface, and source code license is
00001 00002 #ifndef hpp_CPP_Comparator_CPP_hpp 00003 #define hpp_CPP_Comparator_CPP_hpp 00004 00005 #include "../Types/Types.hpp" 00006 00007 namespace Comparator 00008 { 00010 enum CompareType 00011 { 00012 Less = -1, 00013 Equal = 0, 00014 Greater = 1 00015 }; 00016 00018 struct DefaultComparator 00019 { 00020 template <typename T> 00021 inline static bool LessThan(const T & a, const T & b) { return (bool)(a < b); } 00022 template <typename T> 00023 inline static bool Equal(const T & a, const T & b) { return (bool)(a == b); } 00024 }; 00025 00041 template <class KeyType, class Policy = DefaultComparator> 00042 class Comparable 00043 { 00044 public: 00045 typedef CompareType Result; 00046 00047 // Interface 00048 public: 00050 inline Result Compare(const KeyType & _key) const { return Policy::Equal(_key, key) ? Equal : (Policy::LessThan(_key, key) ? Less : Greater); } 00051 00053 inline KeyType Key() const { return Key; } 00054 00055 // Constructors 00056 public: 00058 Comparable(KeyType _key) : key(_key) {} 00059 00060 private: 00062 KeyType key; 00063 }; 00064 } 00065 00066 #endif