doc/gtut-tour-13-pointers.doc

   1 /**
   2 @page GRAS_tut_tour_pointers Lesson 13: Defining structure containing pointers (TODO)
   3
   4 \section GRAS_tut_tour_pointers_toc Table of Contents
   5  - \ref GRAS_tut_tour_pointers_intro
   6  - \ref GRAS_tut_tour_pointers_use
   7  - \ref GRAS_tut_tour_pointers_recap
   8
   9 <hr>
  10
  11 \section GRAS_tut_tour_pointers_intro Introduction
  12
  13
  14 \section GRAS_tut_tour_pointers_use Defining structure containing pointers
  15
  16
  17 \section GRAS_tut_tour_pointers_recap Recapping everything together
  18
  19 The program now reads:
  20 include 12-pointers.c
  21
  22 Which produces the expected output:
  23 include 12-pointers.output
  24
  25
  26 */
  27
  28 #define COLS 16
  29 #define MAX_ROUTESET 10
  30 #define MAX_LEAFSET COLS
  31
  32 GRAS_DEFINE_TYPE(gras_row_t,
  33 struct gras_row_t {
  34   int which_row;
  35   int row[COLS][MAX_ROUTESET];
  36 };)
  37
  38 typedef struct gras_row_t gras_row_t;
  39
  40 GRAS_DEFINE_TYPE(gras_welcome_msg_t,
  41 struct gras_welcome_msg_t {
  42   int id;
  43   double time_sent;
  44
  45   int row_count;
  46   gras_row_t *rows GRAS_ANNOTE(size,row_count);
  47
  48   int leaves[MAX_LEAFSET];
  49 };)
  50
  51 void declare_ddt(void) {
  52   gras_datadesc_type_t ddt;
  53
  54   gras_datadesc_set_const("COLS",COLS);
  55   gras_datadesc_set_const("MAX_ROUTESET",MAX_ROUTESET);
  56   gras_datadesc_set_const("MAX_LEAFSET",MAX_LEAFSET);
  57
  58   gras_datadesc_by_symbol(gras_row_t); /* Parse it before */
  59   ddt=gras_datadesc_ref("welcome_msg_t*",gras_datadesc_by_symbol(gras_welcome_msg_t));
  60   gras_msgtype_declare("welcome",ddt);
  61 }