revision.h

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