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Equators.h

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/*------------------------------------------------------------------------------
* Copyright (C) 2003-2006 Ben van Klinken and the CLucene Team
* 
* Distributable under the terms of either the Apache License (Version 2.0) or 
* the GNU Lesser General Public License, as specified in the COPYING file.
------------------------------------------------------------------------------*/
#ifndef _lucene_util_Equators_
#define _lucene_util_Equators_

#if defined(_LUCENE_PRAGMA_ONCE)
# pragma once
#endif

CL_NS_DEF(util)


// Equators

class Equals{
public:
        class Int32:public CL_NS_STD(binary_function)<const int32_t*,const int32_t*,bool>
        {
        public:
                bool operator()( const int32_t val1, const int32_t val2 ) const;
        };
        
        class Char:public CL_NS_STD(binary_function)<const char*,const char*,bool>
        {
        public:
                bool operator()( const char* val1, const char* val2 ) const;
        };
#ifdef _UCS2
        class WChar: public CL_NS_STD(binary_function)<const wchar_t*,const wchar_t*,bool>
        {
        public:
                bool operator()( const wchar_t* val1, const wchar_t* val2 ) const;
        };
        class TChar: public WChar{
        };
#else
        class TChar: public Char{
        };
#endif


    template<typename _cl>
        class Void:public CL_NS_STD(binary_function)<const void*,const void*,bool>
        {
        public:
                bool operator()( _cl* val1, _cl* val2 ) const{
                        return val1==val2;
                }
        };
};


// Comparors

class Comparable:LUCENE_BASE{
public:
   virtual ~Comparable(){
   }
   
        virtual int32_t compareTo(void* o) = 0;
};

class Compare{
public:
        class _base
        {       // traits class for hash containers
        public:
                enum
                {       // parameters for hash table
                        bucket_size = 4,        // 0 < bucket_size
                        min_buckets = 8
                };      // min_buckets = 2 ^^ N, 0 < N

                _base()
                {
                }
        };

        class Int32:public _base, public Comparable{
                int32_t value;
        public:
                int32_t getValue() const;
                Int32(int32_t val);
                Int32();
                int32_t compareTo(void* o);
                bool operator()( int32_t t1, int32_t t2 ) const;
                size_t operator()( int32_t t ) const;
        };

        
        class Float:public Comparable{
                float_t value;
        public:
                float_t getValue() const;
                Float(float_t val);
                int32_t compareTo(void* o);
        };


        class Char: public _base //<char*>
        {
        public:
                bool operator()( const char* val1, const char* val2 ) const;
                size_t operator()( const char* val1) const;
        };

#ifdef _UCS2
        class WChar: public _base //<wchar_t*>
        {
        public:
                bool operator()( const wchar_t* val1, const wchar_t* val2 ) const;
                size_t operator()( const wchar_t* val1) const;
        };
#endif

        class TChar: public _base, public Comparable{
          const TCHAR* s;
        public:
                const TCHAR* getValue() const;

                TChar();
                TChar(const TCHAR* str);
                int32_t compareTo(void* o);
                bool operator()( const TCHAR* val1, const TCHAR* val2 ) const;
                size_t operator()( const TCHAR* val1) const;
        };


        template<typename _cl>
        class Void:public _base //<const void*,const void*,bool>
        {
        public:
                int32_t compareTo(_cl* o){
                        if ( this == o )
                                return o;
                        else
                                return this > o ? 1 : -1;
                }
                bool operator()( _cl* t1, _cl* t2 ) const{
                        return t1 > t2 ? true : false;
                }
                size_t operator()( _cl* t ) const{
                        return (size_t)t;
                }
        };
};

// allocators

class Deletor{
public:

        template<typename _kt>
        class Array{
        public:
                static void doDelete(_kt* arr){
                        _CLDELETE_LARRAY(arr);
                }
        };
        class tcArray{
        public:
                static void doDelete(const TCHAR* arr){
                        _CLDELETE_CARRAY(arr);
                }
        };
        class acArray{
        public:
                static void doDelete(const char* arr){
                        _CLDELETE_CaARRAY(arr);
                }
        };

        class Unintern{
        public:
                static void doDelete(TCHAR* arr);
        };
        template<typename _kt>
        class Object{
        public:
                static void doDelete(_kt* obj){
                        _CLLDELETE(obj);
                }
        };
        template<typename _kt>
        class Void{
        public:
                static void doDelete(_kt* obj){
                        _CLVDELETE(obj);
                }
        };
        class Dummy{
        public:
                static void doDelete(const void* nothing){
                        //todo: remove all occurances where it hits this point
                        //CND_WARNING(false,"Deletor::Dummy::doDelete run, set deleteKey or deleteValue to false");
                }
        };
        class DummyInt32{
        public:
                static void doDelete(const int32_t nothing){
                }
        };
        class DummyFloat{
        public:
                static void doDelete(const float_t nothing){
                }
        };
        template <typename _type>
        class ConstNullVal{
        public:
                static void doDelete(const _type nothing){
                        //todo: remove all occurances where it hits this point
                        //CND_WARNING(false,"Deletor::Dummy::doDelete run, set deleteKey or deleteValue to false");
                }
        };
        
        template <typename _type>
        class NullVal{
        public:
                static void doDelete(_type nothing){
                        //todo: remove all occurances where it hits this point
                        //CND_WARNING(false,"Deletor::Dummy::doDelete run, set deleteKey or deleteValue to false");
                }
        };
};

CL_NS_END
#endif

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