Andrew's git - gitweb.git/blob

   1#ifndef DECORATE_H
   2#define DECORATE_H
   3
   4/*
   5 * A data structure that associates Git objects to void pointers. See
   6 * t/helper/test-example-decorate.c for a demonstration of how to use these
   7 * functions.
   8 */
   9
  10/*
  11 * An entry in the data structure.
  12 */
  13struct decoration_entry {
  14        const struct object *base;
  15        void *decoration;
  16};
  17
  18/*
  19 * The data structure.
  20 *
  21 * This data structure must be zero-initialized.
  22 */
  23struct decoration {
  24        /*
  25         * Not used by the decoration mechanism. Clients may use this for
  26         * whatever they want.
  27         */
  28        const char *name;
  29
  30        /*
  31         * The capacity of "entries".
  32         */
  33        unsigned int size;
  34
  35        /*
  36         * The number of real Git objects (that is, entries with non-NULL
  37         * "base").
  38         */
  39        unsigned int nr;
  40
  41        /*
  42         * The entries. This is an array of size "size", containing nr entries
  43         * with non-NULL "base" and (size - nr) entries with NULL "base".
  44         */
  45        struct decoration_entry *entries;
  46};
  47
  48/*
  49 * Add an association from the given object to the given pointer (which may be
  50 * NULL), returning the previously associated pointer. If there is no previous
  51 * association, this function returns NULL.
  52 */
  53extern void *add_decoration(struct decoration *n, const struct object *obj, void *decoration);
  54
  55/*
  56 * Return the pointer associated to the given object. If there is no
  57 * association, this function returns NULL.
  58 */
  59extern void *lookup_decoration(struct decoration *n, const struct object *obj);
  60
  61#endif