source: dev/trunk/ab5.0/jenga/include/common/Hashmap.h@ 520

#pragma once


namespace Jenga{
namespace Common{


#define MAX_HASHMAP 65535
template<class T> class Hashmap
{
    T* hashArray[MAX_HASHMAP];

public:
    virtual int GetHash( const char *keyName ) const
    {
        int key;
        for(key=0;*keyName!='\0';keyName++){
            key=((key<<8)+ *keyName )%MAX_HASHMAP;
        }
        return key;
    }

    Hashmap()
        : isIteratorReady( false )
    {
        memset( hashArray, 0, MAX_HASHMAP*sizeof(T*) );
    }
    ~Hashmap()
    {
        Clear();
    }
    void Clear()
    {
        for( int i=0; i<MAX_HASHMAP; i++ )
        {
            T* temp = hashArray[i];
            if( temp )
            {
                delete temp;
            }
        }
        memset( hashArray, 0, MAX_HASHMAP*sizeof(T*) );
    }

    // 内容を破棄せずにすべて抜き取る
    void PullOutAll()
    {
        memset( hashArray, 0, MAX_HASHMAP*sizeof(T*) );
    }

    bool Put( T* value )
    {
        int key = GetHash( value->GetKeyName().c_str() );

        if(hashArray[key]){
            T *temp = hashArray[key];
            while( true ){
                if( temp->IsDuplication( value ) )
                {
                    // 重複している
                    return false;
                }

                if( temp->GetChainNext() == NULL )
                {
                    break;
                }
                temp = temp->GetChainNext();
            }
            temp->SetChainNext( value );
        }
        else{
            hashArray[key] = value;
        }

        return true;
    }

    T* GetHashArrayElement( const char *keyName )
    {
        return hashArray[GetHash(keyName)];
    }
    const T* GetHashArrayElement( const char *keyName ) const
    {
        return hashArray[GetHash(keyName)];
    }

    bool IsExist( const std::string &keyName ) const
    {
        int key = GetHash( keyName.c_str() );

        if(hashArray[key]){
            T *temp = hashArray[key];
            while( true ){
                if( temp->IsDuplication( keyName ) )
                {
                    // 重複している
                    return true;
                }

                if( temp->GetChainNext() == NULL )
                {
                    break;
                }
                temp = temp->GetChainNext();
            }
        }

        return false;
    }


    /////////////////////////////////////////////////////////////////
    // イテレータ
    /////////////////////////////////////////////////////////////////
private:
    mutable std::vector<T*> iterator_Objects;
    mutable int iterator_CurrentNext;
    mutable bool isIteratorReady;
public:
    void Iterator_Init() const
    {
        iterator_Objects.clear();
        iterator_CurrentNext = 0;

        for( int i=0; i<MAX_HASHMAP; i++ ){
            if( hashArray[i] ){
                T* temp = hashArray[i];
                while( temp )
                {
                    iterator_Objects.push_back( temp );

                    temp = (T*)temp->GetChainNext();
                }
            }
        }

        isIteratorReady = true;
    }
    void Iterator_Reset() const
    {
        if( !isIteratorReady )
        {
            Jenga::Throw( "イテレータの準備ができていない" );
        }
        iterator_CurrentNext = 0;
    }
    bool Iterator_HasNext() const
    {
        return ( iterator_CurrentNext < (int)iterator_Objects.size() );
    }
    T *Iterator_GetNext() const
    {
        return iterator_Objects[iterator_CurrentNext++];
    }
    int Iterator_GetMaxCount() const
    {
        return (int)iterator_Objects.size();
    }


    // XMLシリアライズ用
private:
    friend class boost::serialization::access;
    BOOST_SERIALIZATION_SPLIT_MEMBER();
    template<class Archive> void load(Archive& ar, const unsigned int version)
    {
        std::vector<T *> objects;
        ar & BOOST_SERIALIZATION_NVP( objects );

        // 読み込み後の処理
        Clear();
        BOOST_FOREACH( T *object, objects )
        {
            Put( object );
        }
        Iterator_Init();
    }
    template<class Archive> void save(Archive& ar, const unsigned int version) const
    {
        // 保存準備
        std::vector<T *> objects;
        objects.clear();
        Iterator_Reset();
        while( Iterator_HasNext() )
        {
            objects.push_back( Iterator_GetNext() );
        }

        ar & BOOST_SERIALIZATION_NVP( objects );
    }
};

template<class T> class ObjectInHashmap
{
    T *pNextObject;
public:

    ObjectInHashmap()
        : pNextObject( NULL )
    {
    }
    ~ObjectInHashmap()
    {
        if( pNextObject )
        {
            delete pNextObject;
        }
    }

    virtual const std::string &GetKeyName() const = 0;
    virtual bool IsDuplication( const T *value ) const
    {
        return ( GetKeyName() == value->GetName() );
    }
    virtual bool IsDuplication( const std::string &keyName ) const
    {
        return ( GetKeyName() == keyName );
    }

    T *GetChainNext()
    {
        return pNextObject;
    }
    const T *GetChainNext() const
    {
        return pNextObject;
    }
    void SetChainNext( T *pNextObject )
    {
        this->pNextObject = pNextObject;
    }
};


}}