pdftops/Array.cxx

   1 //========================================================================
   2 //
   3 // Array.cc
   4 //
   5 // Copyright 1996-2003 Glyph & Cog, LLC
   6 //
   7 //========================================================================
   8
   9 #include <config.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     elems = (Object *)greallocn(elems, size, sizeof(Object));
  48   }
  49   elems[length] = *elem;
  50   ++length;
  51 }
  52
  53 Object *Array::get(int i, Object *obj) {
  54   if (i < 0 || i >= length) {
  55 #ifdef DEBUG_MEM
  56     abort();
  57 #else
  58     return obj->initNull();
  59 #endif
  60   }
  61   return elems[i].fetch(xref, obj);
  62 }
  63
  64 Object *Array::getNF(int i, Object *obj) {
  65   if (i < 0 || i >= length) {
  66 #ifdef DEBUG_MEM
  67     abort();
  68 #else
  69     return obj->initNull();
  70 #endif
  71   }
  72   return elems[i].copy(obj);
  73 }