array.h

   1 /***************************************************************************
   2               array.h  -  0x88 and bounds-checked static array
   3                              -------------------
   4     begin                : Sun Sep 23 2007
   5     copyright            : (C) 2007 by Maurizio Monge
   6     email                : monge@linuz.sns.it
   7  ***************************************************************************/
   8
   9 /***************************************************************************
  10  *                                                                         *
  11  *   This program is free software; you can redistribute it and/or modify  *
  12  *   it under the terms of the GNU General Public License as published by  *
  13  *   the Free Software Foundation; either version 2 of the License, or     *
  14  *   (at your option) any later version.                                   *
  15  *                                                                         *
  16  ***************************************************************************/
  17
  18 #ifndef __ARRAY_H__
  19 #define __ARRAY_H__
  20
  21 #include "compiler.h"
  22
  23 template<typename T, int S>
  24 class Array {
  25 public:
  26 #ifdef DEBUG
  27     class PACKED Type {
  28     public:
  29         T data[S];
  30         T& operator[](unsigned int index) const {
  31             ASSERT(index < S);
  32             return ((T*)data)[index];
  33         }
  34     };
  35 #else //DEBUG
  36     typedef T Type[S];
  37 #endif //DEBUG
  38 };
  39
  40 #ifdef DEBUG
  41
  42 class PACKED A88Data {
  43 public:
  44     uint8_t data[128];
  45     uint8_t& operator[](unsigned int index) const {
  46         ASSERT(!(index & (uint8_t)0x08));
  47         ASSERT(index < 0x80);
  48         return ((uint8_t*)data)[index];
  49     }
  50 };
  51
  52 class PACKED A88 {
  53 public:
  54     uint8_t* ptr;
  55     A88(uint8_t *p) : ptr(p) {}
  56     A88(const A88Data& d) : ptr((uint8_t*)d.data) {}
  57     uint8_t& operator[](unsigned int index) const {
  58         ASSERT(!(index & (uint8_t)0x08));
  59         ASSERT(index < 0x80);
  60         return ((uint8_t*)ptr)[index];
  61     }
  62 };
  63 #define DEF2_A88(a,b) A88Data a; A88Data b
  64
  65 #else //DEBUG
  66
  67 typedef uint8_t* A88;
  68 #define DEF2_A88(a,b) union { uint8_t a[128]; struct { uint8_t _pad_for_##b[8]; uint8_t b[120]; }; }
  69
  70 #endif //DEBUG
  71
  72 inline void zero_a88(A88 d)
  73 {
  74     register uint64_t *z = (uint64_t*)&d[0];
  75     for(int i=0;i<8;i++)
  76     {
  77         *z++ = 0;
  78         z++;
  79     }
  80 }
  81
  82 #endif //__ARRAY_H__