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198 lines
6.4 KiB
198 lines
6.4 KiB
#ifndef OBJECT_H |
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#define OBJECT_H |
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#include "cache.h" |
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struct buffer_slab; |
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struct parsed_object_pool { |
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struct object **obj_hash; |
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int nr_objs, obj_hash_size; |
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/* TODO: migrate alloc_states to mem-pool? */ |
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struct alloc_state *blob_state; |
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struct alloc_state *tree_state; |
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struct alloc_state *commit_state; |
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struct alloc_state *tag_state; |
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struct alloc_state *object_state; |
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/* parent substitutions from .git/info/grafts and .git/shallow */ |
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struct commit_graft **grafts; |
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int grafts_alloc, grafts_nr; |
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int is_shallow; |
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struct stat_validity *shallow_stat; |
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char *alternate_shallow_file; |
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int commit_graft_prepared; |
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int substituted_parent; |
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struct buffer_slab *buffer_slab; |
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}; |
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struct parsed_object_pool *parsed_object_pool_new(void); |
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void parsed_object_pool_clear(struct parsed_object_pool *o); |
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struct object_list { |
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struct object *item; |
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struct object_list *next; |
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}; |
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struct object_array { |
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unsigned int nr; |
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unsigned int alloc; |
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struct object_array_entry { |
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struct object *item; |
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/* |
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* name or NULL. If non-NULL, the memory pointed to |
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* is owned by this object *except* if it points at |
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* object_array_slopbuf, which is a static copy of the |
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* empty string. |
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*/ |
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char *name; |
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char *path; |
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unsigned mode; |
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} *objects; |
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}; |
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#define OBJECT_ARRAY_INIT { 0, 0, NULL } |
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/* |
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* object flag allocation: |
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* revision.h: 0---------10 15 23------26 |
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* fetch-pack.c: 01 |
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* negotiator/default.c: 2--5 |
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* walker.c: 0-2 |
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* upload-pack.c: 4 11-----14 16-----19 |
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* builtin/blame.c: 12-13 |
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* bisect.c: 16 |
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* bundle.c: 16 |
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* http-push.c: 11-----14 |
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* commit-graph.c: 15 |
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* commit-reach.c: 16-----19 |
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* sha1-name.c: 20 |
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* list-objects-filter.c: 21 |
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* builtin/fsck.c: 0--3 |
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* builtin/gc.c: 0 |
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* builtin/index-pack.c: 2021 |
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* builtin/pack-objects.c: 20 |
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* builtin/reflog.c: 10--12 |
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* builtin/show-branch.c: 0-------------------------------------------26 |
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* builtin/unpack-objects.c: 2021 |
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*/ |
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#define FLAG_BITS 28 |
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/* |
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* The object type is stored in 3 bits. |
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*/ |
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struct object { |
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unsigned parsed : 1; |
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unsigned type : TYPE_BITS; |
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unsigned flags : FLAG_BITS; |
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struct object_id oid; |
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}; |
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const char *type_name(unsigned int type); |
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int type_from_string_gently(const char *str, ssize_t, int gentle); |
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#define type_from_string(str) type_from_string_gently(str, -1, 0) |
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/* |
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* Return the current number of buckets in the object hashmap. |
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*/ |
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unsigned int get_max_object_index(void); |
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/* |
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* Return the object from the specified bucket in the object hashmap. |
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*/ |
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struct object *get_indexed_object(unsigned int); |
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/* |
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* This can be used to see if we have heard of the object before, but |
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* it can return "yes we have, and here is a half-initialised object" |
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* for an object that we haven't loaded/parsed yet. |
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* |
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* When parsing a commit to create an in-core commit object, its |
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* parents list holds commit objects that represent its parents, but |
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* they are expected to be lazily initialized and do not know what |
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* their trees or parents are yet. When this function returns such a |
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* half-initialised objects, the caller is expected to initialize them |
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* by calling parse_object() on them. |
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*/ |
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struct object *lookup_object(struct repository *r, const struct object_id *oid); |
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void *create_object(struct repository *r, const struct object_id *oid, void *obj); |
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void *object_as_type(struct object *obj, enum object_type type, int quiet); |
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/* |
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* Returns the object, having parsed it to find out what it is. |
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* |
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* Returns NULL if the object is missing or corrupt. |
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*/ |
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struct object *parse_object(struct repository *r, const struct object_id *oid); |
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/* |
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* Like parse_object, but will die() instead of returning NULL. If the |
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* "name" parameter is not NULL, it is included in the error message |
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* (otherwise, the hex object ID is given). |
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*/ |
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struct object *parse_object_or_die(const struct object_id *oid, const char *name); |
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/* Given the result of read_sha1_file(), returns the object after |
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* parsing it. eaten_p indicates if the object has a borrowed copy |
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* of buffer and the caller should not free() it. |
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*/ |
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struct object *parse_object_buffer(struct repository *r, const struct object_id *oid, enum object_type type, unsigned long size, void *buffer, int *eaten_p); |
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/** Returns the object, with potentially excess memory allocated. **/ |
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struct object *lookup_unknown_object(const struct object_id *oid); |
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struct object_list *object_list_insert(struct object *item, |
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struct object_list **list_p); |
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int object_list_contains(struct object_list *list, struct object *obj); |
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void object_list_free(struct object_list **list); |
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/* Object array handling .. */ |
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void add_object_array(struct object *obj, const char *name, struct object_array *array); |
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void add_object_array_with_path(struct object *obj, const char *name, struct object_array *array, unsigned mode, const char *path); |
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/* |
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* Returns NULL if the array is empty. Otherwise, returns the last object |
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* after removing its entry from the array. Other resources associated |
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* with that object are left in an unspecified state and should not be |
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* examined. |
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*/ |
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struct object *object_array_pop(struct object_array *array); |
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typedef int (*object_array_each_func_t)(struct object_array_entry *, void *); |
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/* |
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* Apply want to each entry in array, retaining only the entries for |
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* which the function returns true. Preserve the order of the entries |
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* that are retained. |
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*/ |
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void object_array_filter(struct object_array *array, |
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object_array_each_func_t want, void *cb_data); |
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/* |
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* Remove from array all but the first entry with a given name. |
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* Warning: this function uses an O(N^2) algorithm. |
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*/ |
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void object_array_remove_duplicates(struct object_array *array); |
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/* |
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* Remove any objects from the array, freeing all used memory; afterwards |
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* the array is ready to store more objects with add_object_array(). |
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*/ |
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void object_array_clear(struct object_array *array); |
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void clear_object_flags(unsigned flags); |
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/* |
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* Clear the specified object flags from all in-core commit objects. |
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*/ |
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void clear_commit_marks_all(unsigned int flags); |
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#endif /* OBJECT_H */
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