apdf/xpdf/Array.cc

   1 //========================================================================
   2 //
   3 // Array.cc
   4 //
   5 // Copyright 1996-2003 Glyph & Cog, LLC
   6 //
   7 //========================================================================
   8
   9 #include <aconf.h>
  10
  11 #ifdef USE_GCC_PRAGMAS
  12 #pragma implementation
  13 #endif
  14
  15 #include <stdlib.h>
  16 #include <stddef.h>
  17 #include "gmem.h"
  18 #include "Object.h"
  19 #include "Array.h"
  20
  21 //------------------------------------------------------------------------
  22 // Array
  23 //------------------------------------------------------------------------
  24
  25 Array::Array(XRef *xrefA) {
  26   xref = xrefA;
  27   elems = NULL;
  28   size = length = 0;
  29   ref = 1;
  30 }
  31
  32 Array::~Array() {
  33   int i;
  34
  35   for (i = 0; i < length; ++i)
  36     elems[i].free();
  37   gfree(elems);
  38 }
  39
  40 void Array::add(Object *elem) {
  41   if (length == size) {
  42     if (length == 0) {
  43       size = 8;
  44     } else {
  45       size *= 2;
  46     }
  47 #ifdef DEBUG_MEM
  48     for (int k = 0; k < length; ++k)
  49       if (!elems[k].isNone() && !elems[k].isNull())
  50         objTracker.unTrack(&elems[k]);
  51 #endif
  52     elems = (Object *)greallocn(elems, size, sizeof(Object));
  53 #ifdef DEBUG_MEM
  54     for (int k = 0; k < length; ++k)
  55       if (!elems[k].isNone() && !elems[k].isNull())
  56         objTracker.track(&elems[k]);
  57 #endif
  58   }
  59   elems[length] = *elem;
  60 #ifdef DEBUG_MEM
  61   elem->clear();
  62 #endif
  63   ++length;
  64 }
  65
  66 Object *Array::get(int i, Object *obj) {
  67   if (i < 0 || i >= length) {
  68 #ifdef DEBUG_MEM
  69     abort();
  70 #else
  71     return obj->initNull();
  72 #endif
  73   }
  74   return elems[i].fetch(xref, obj);
  75 }
  76
  77 Object *Array::getNF(int i, Object *obj) {
  78   if (i < 0 || i >= length) {
  79 #ifdef DEBUG_MEM
  80     abort();
  81 #else
  82     return obj->initNull();
  83 #endif
  84   }
  85   return elems[i].copy(obj);
  86 }