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   1 #ifndef REVISION_H
   2 #define REVISION_H
   3
   4 #define SEEN            (1u<<0)
   5 #define UNINTERESTING   (1u<<1)
   6 #define TREECHANGE      (1u<<2)
   7 #define SHOWN           (1u<<3)
   8 #define TMP_MARK        (1u<<4) /* for isolated cases; clean after use */
   9 #define BOUNDARY        (1u<<5)
  10
  11 struct rev_info;
  12
  13 typedef void (prune_fn_t)(struct rev_info *revs, struct commit *commit);
  14
  15 struct rev_info {
  16         /* Starting list */
  17         struct commit_list *commits;
  18         struct object_list *pending_objects;
  19
  20         /* Basic information */
  21         const char *prefix;
  22         void *prune_data;
  23         prune_fn_t *prune_fn;
  24
  25         /* Traversal flags */
  26         unsigned int    dense:1,
  27                         no_merges:1,
  28                         remove_empty_trees:1,
  29                         lifo:1,
  30                         topo_order:1,
  31                         tag_objects:1,
  32                         tree_objects:1,
  33                         blob_objects:1,
  34                         edge_hint:1,
  35                         limited:1,
  36                         unpacked:1,
  37                         boundary:1,
  38                         parents:1;
  39
  40         /* special limits */
  41         int max_count;
  42         unsigned long max_age;
  43         unsigned long min_age;
  44
  45         topo_sort_set_fn_t topo_setter;
  46         topo_sort_get_fn_t topo_getter;
  47 };
  48
  49 #define REV_TREE_SAME           0
  50 #define REV_TREE_NEW            1
  51 #define REV_TREE_DIFFERENT      2
  52
  53 /* revision.c */
  54 extern int rev_same_tree_as_empty(struct tree *t1);
  55 extern int rev_compare_tree(struct tree *t1, struct tree *t2);
  56
  57 extern void init_revisions(struct rev_info *revs);
  58 extern int setup_revisions(int argc, const char **argv, struct rev_info *revs, const char *def);
  59 extern void prepare_revision_walk(struct rev_info *revs);
  60 extern struct commit *get_revision(struct rev_info *revs);
  61
  62 extern void mark_parents_uninteresting(struct commit *commit);
  63 extern void mark_tree_uninteresting(struct tree *tree);
  64
  65 struct name_path {
  66         struct name_path *up;
  67         int elem_len;
  68         const char *elem;
  69 };
  70
  71 extern struct object_list **add_object(struct object *obj,
  72                                        struct object_list **p,
  73                                        struct name_path *path,
  74                                        const char *name);
  75
  76 #endif