util_classes.h

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// ==========  This file is under  LGPL, the GNU Lesser General Public Licence
// ==========  Dialing Syntax Analysis (www.aot.ru)
// ==========  Copyright by Alexey Sokirko

#ifndef utilit_classes_h
 #define utilit_classes_h

#include "utilit.h"



template <class Type, int Size>
struct CSmallVector     {
        Type     m_Items[Size];
        int      m_ItemsCount;
        CSmallVector () 
        {
                m_ItemsCount =  0;
        }
        void Add (Type  Item)
        {
                //assert(m_ItemsCount < Size-1);
                //      â Release ïðîñòî íå     áóäåì äîáàâëÿòü îòíîøåíèÿ, åñëè èõ ñëèøêîì ìíîãî
                if      (m_ItemsCount >= Size-1)
                        return;
                m_Items[m_ItemsCount++] = Item;
        };
        void Insert (int No, Type Item)
        {
                //assert(m_RelsCount <  MaxRelSet-1);
                //      â Release ïðîñòî íå     áóäåì äîáàâëÿòü îòíîøåíèÿ, åñëè èõ ñëèøêîì ìíîãî
                if      (m_ItemsCount >= Size-1)
                        return;

                for (long i = m_ItemsCount; i > No      ; i--)
                        m_Items[i]      = m_Items[i-1];
                m_Items[No] = Item;
                m_ItemsCount++;
        };
        void  Erase (int No)
        {
                //assert (No <  m_RelsCount);
                for (long i = No; i < m_ItemsCount-1 ;  i++)
                        m_Items[i]      = m_Items[i+1];
                m_ItemsCount--;
        };
        void  Clear ()
        {
                m_ItemsCount =  0;
        };
        BYTE size () const      {
                return  m_ItemsCount; 
        };
        bool empty      () const {
                return  m_ItemsCount == 0; 
        };

        Type& back      () {
                return  m_Items[m_ItemsCount - 1];
        };
        Type& operator[](int No) {      return m_Items[No];     };

        const Type& operator[](int      No)     const { return m_Items[No];     };

        size_t find_item (const Type& X) const { return find(m_Items, m_Items+m_ItemsCount, X) - m_Items; };

        bool    has (const Type& X) const { return find_item(X) != m_ItemsCount; };


};


template <class T>
class _share_pointer_t
{
public:
        T               m_Pointer;      
        bool    m_bOwnPointer;
        
        _share_pointer_t()
        {
                m_bOwnPointer = true;
                m_Pointer = 0;
        };
        ~_share_pointer_t()
        {
                FreePointer();
        };

        void SetPointer(T p, bool bOwnPointer)
        {
                if (m_bOwnPointer)
                        if (m_Pointer)
                                delete m_Pointer;

                m_Pointer = p;
                m_bOwnPointer = bOwnPointer;
        }
        void FreePointer()
        {
                SetPointer(0, true);
        }
};



class CShortString
{
        vector<char>::const_iterator m_pStringPointer;
public:
        CShortString(vector<char>::const_iterator pData);

        BYTE GetLength() const;
        vector<char>::const_iterator GetData() const;
        const char*     GetString() const;
        //bool  operator <(const CShortString& s) const;
};

class IsLessShortString : public std::binary_function<const CShortString&, const char*, bool>
{
public:
        bool operator()(const CShortString& Item1,      const char* Item2) const;
        bool operator()(const char* Item1,                      const CShortString& Item2) const;
        bool operator()(const CShortString& Item1,      const CShortString& Item2) const;
};


class CShortStringHolder : public vector<CShortString> 
{
        vector<char> m_Buffer;
        template<class T>
                bool CreateFromSequence(T begin, T end);
public: 
        void    ReadShortStringHolder(string filename);
        bool    WriteShortStringHolder(const string& FileName) const;
        bool    CreateFromVector(const StringVector& in);
        bool    CreateFromSet(const StringSet& in);
};



struct CMyTimeSpan 
{
        clock_t     m_StartTime;
        double      m_TimeSpan;
        long            m_InterfaceNestId;
        long            m_SequenceId;
        long        m_InvokeCount;
        CMyTimeSpan (long SequenceId = 0, long InterfaceNestId = 0);
        void GetStrRepresentation(const char* Name, char* buffer, double AllClocksCount) const;
};


class CMyTimeSpanHolder 
{
        map<string, CMyTimeSpan>        m_TimeSpans;
        long                                            m_SequenceId;
        
public:
        bool                                            m_bTimeSpanHolderEnabled;

        typedef map<string, CMyTimeSpan>::const_iterator        ConstIterator;
        typedef map<string, CMyTimeSpan>::iterator                      Iterator;

        CMyTimeSpanHolder();
        void StartTimer(const string& Name, long NestId);
        double EndTimer(const string& Name);
        string GetStrRepresentation (double AllClocksCount = 0) const;
        void ClearTimers();
};


class StringTokenizer{
        char *text_ptr;
        char *text;
        int i;
        string delims;
        char *_val;

        bool is_delim(char ch) const;
        void initialize(const char *_text, const char *_delims);
public:
        //-------------------------------------------------------
        StringTokenizer(const char *_text, const char *_delims);
        ~StringTokenizer();
        const char * operator ()();
        string next_token ();

        const char * get_rest () const;
        const char *val() const;
        int  count() const;
        bool has_next() const;
        void reinitialize(const char *_text, const char *_delims);

};



#endif