moArrayH.h

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/*******************************************************************************

                               moArrayH.h

  ****************************************************************************
  *                                                                          *
  *   This source is free software; you can redistribute it and/or modify    *
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  Copyright(C) 2006 Fabricio Costa

  Authors:
  Fabricio Costa
  Andrés Colubri

*******************************************************************************/

#ifndef __MO_ARRAYH_H__
#define __MO_ARRAYH_H__

#include "moTypes.h"

template <class T, int N>
class moArray {

private:
    T array[N];
    int n;

public:
    /*
    moArray();
    void Set(int x, T value);
    T Get(int x);
    */
    moArray() {
      n = N;
    }

    void Set(int x, T value) {
      array[x]=value;
    }

    T Get(int x) {
      return array[x];
    }

};

template <class T>
class moDynamicArray {

private:
    T *array;
    MOuint n;
    T m_NULL;

public:

    moDynamicArray() {
      array = NULL;
      n = 0;
    }

    moDynamicArray(const moDynamicArray &src) {
        *this= src ;
    }

    moDynamicArray &operator = (const moDynamicArray &src) {
        Empty();
        Init( src.n, src.m_NULL );
        for(MOuint i=0; i< src.n; i++) {
            array[i] = src.array[i];
        }
        return *this;
    }

    moDynamicArray(int N) {

        if (N>0) {
            array = new T [N];
            n = N;
        } else {
            n=0;
            array = NULL;
        }

    }


    MOboolean Init( int N, T initvalue ) {

        m_NULL = initvalue;

        if (n>0) Empty();

        if (N>0) {
            array = new T [N];
            n = N;
            for( MOuint i=0; i<n; i++) array[i] = initvalue;
        } else {
            n=0;
            array = NULL;
        }
        return (array!=NULL);
    }

    MOboolean Finish() {
        Empty();
        return true;
    }

    virtual ~moDynamicArray() {
        if ( array != NULL ) {
            delete[] array;
            array = NULL;
            n = 0;
        }
    }

    void Empty() {

        n = 0;
        if (array!=NULL) {
            delete[] array;
            array = NULL;
        }

    }

    void Set(int x, const T &value) {

        if ( 0<=x && x<(MOint)n && array!=NULL) array[x]=value;

    }

    const T& Get(int x) const {

        if ( 0<=x && x<(MOint)n && array!=NULL) {

            return array[x];

        } else return m_NULL;
    }

    T& operator [] (int x) {
        if ( 0<=x && x<(MOint)n && array!=NULL) {

            return array[x];

        } else return m_NULL;
    }

    MOuint Count() const {
        return n;
    }

    void Add( const T &value ) {

        MOuint i;
        T* arrayaux;

        arrayaux = new T [n+1];

        for( i=0 ; i < n ; i++ ) {
            arrayaux[i] = array[i];
        }
        if (array!=NULL) {
                delete[] array;
        }
        arrayaux[n] = value;
        n++;
        array = arrayaux;
    }

    void Remove(int x) {

        MOuint i,j;
        T* arrayaux;

        if ( 0<=x && x<(MOint)n && array!=NULL) {

            if ( n > 1 ) {
                arrayaux = new T [n-1];
            } else arrayaux = NULL;

            for( i=0, j=0; j < (n-1); i++, j++) {
                if ( x == (int)i ) i++;
                arrayaux[j] = array[i];
            }
            n--;

            delete[] array;
            array = arrayaux;
        }
    }

    void Copy( moDynamicArray &A) {
        Copy(A, 0, A.Count()-1);
    }

    void Copy( moDynamicArray &A, int x0, int x1) {
        Empty();
        T cpy;
        for(int i=x0; i<= x1; i++) {
            cpy = A[i];
            Add( cpy );
        }
    }

};

/*
Ejemplo:

Header:
#include "moArray.h"
class MyClass;
moDeclareDynamicArray( MyClass, ArrayOfMyClass);

Source:
#include "moArray.cpp" // this is a magic incantation which must be done!
moDefineDynamicArray( ArrayOfMyClass );
*/

#define _moDeclareDynamicArray( T, name, classexp)                       \
classexp name                                                            \
{                                                                        \
public:                                                                  \
    name();                                                              \
    name(const name& src);                                               \
    name(int N);                                                         \
    name& operator=(const name& src);                                    \
                                                                         \
    virtual ~name();                                                     \
                                                                         \
    MOboolean Init( int N, T initvalue );                                \
    MOboolean Finish();                                                  \
    void Empty();                                                        \
    void Set(int x, const T &value);                                     \
    void Insert(int x, const T &value);                                  \
    const T& Get(int x) const;                                                       \
    T& GetRef(int x);                                                        \
    T& Item(int x);                                                      \
    T& operator[] (int x);                                               \
    MOuint Count() const;                                                        \
    void Add( const T &value );                                          \
    void Remove(int x);                                                  \
    void Copy( const name &A);                                           \
    void Copy( const name &A, int x0, int x1);                           \
                                                                         \
private:                                                                 \
    T *array;                                                            \
    MOuint n;                                                                \
    T m_NULL;                                                            \
                                                                         \
};



#define moDeclareDynamicArray(T, name)                                  \
    moDeclareDynamicArrayDecl(T, name, class )

#define moDeclareExportedDynamicArray(T, name)                          \
    moDeclareUserExportedDynamicArray(T, name, LIBMOLDEO_API)


#define moDeclareDynamicArrayDecl(T, name, decl)                        \
    typedef T _moObjArray##name;                                        \
    _moDeclareDynamicArray(_moObjArray##name, name, decl)

#define moDeclareUserExportedDynamicArray(T, name, expmode)             \
    moDeclareDynamicArrayDecl(T, name, class expmode)

// moDefineDynamicArray is going to be redefined when arrimpl.cpp is included,
// try to provoke a human-understandable error if it used incorrectly.
//
// there is no real need for 3 different macros in the DEFINE case but do it
// anyhow for consistency
#define moDefineDynamicArray(name) DidYouIncludeArrayCpp
#define moDefineExportedDynamicArray(name)   moDefineDynamicArray(name)
#define moDefineUserExportedDynamicArray(name)   moDefineDynamicArray(name)

#endif /* __MO_ARRAYH_H__ */