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![Junio C Hamano](/assets/img/avatar_default.png)
Avoid duplicated work while building reachability bitmaps. * jk/bitmap-tree-optim: bitmaps: don't recurse into trees already in the bitmap
468 lines
13 KiB
C
468 lines
13 KiB
C
#ifndef REVISION_H
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#define REVISION_H
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#include "commit.h"
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#include "parse-options.h"
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#include "grep.h"
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#include "notes.h"
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#include "pretty.h"
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#include "diff.h"
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#include "commit-slab-decl.h"
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/**
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* The revision walking API offers functions to build a list of revisions
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* and then iterate over that list.
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*
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* Calling sequence
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* ----------------
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*
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* The walking API has a given calling sequence: first you need to initialize
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* a rev_info structure, then add revisions to control what kind of revision
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* list do you want to get, finally you can iterate over the revision list.
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*
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*/
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/* Remember to update object flag allocation in object.h */
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#define SEEN (1u<<0)
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#define UNINTERESTING (1u<<1)
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#define TREESAME (1u<<2)
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#define SHOWN (1u<<3)
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#define TMP_MARK (1u<<4) /* for isolated cases; clean after use */
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#define BOUNDARY (1u<<5)
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#define CHILD_SHOWN (1u<<6)
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#define ADDED (1u<<7) /* Parents already parsed and added? */
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#define SYMMETRIC_LEFT (1u<<8)
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#define PATCHSAME (1u<<9)
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#define BOTTOM (1u<<10)
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/* WARNING: This is also used as REACHABLE in commit-graph.c. */
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#define PULL_MERGE (1u<<15)
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#define TOPO_WALK_EXPLORED (1u<<23)
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#define TOPO_WALK_INDEGREE (1u<<24)
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/*
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* Indicates object was reached by traversal. i.e. not given by user on
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* command-line or stdin.
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*/
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#define NOT_USER_GIVEN (1u<<25)
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#define TRACK_LINEAR (1u<<26)
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#define ALL_REV_FLAGS (((1u<<11)-1) | NOT_USER_GIVEN | TRACK_LINEAR | PULL_MERGE)
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#define DECORATE_SHORT_REFS 1
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#define DECORATE_FULL_REFS 2
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struct log_info;
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struct repository;
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struct rev_info;
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struct string_list;
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struct saved_parents;
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struct bloom_key;
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struct bloom_filter_settings;
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define_shared_commit_slab(revision_sources, char *);
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struct rev_cmdline_info {
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unsigned int nr;
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unsigned int alloc;
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struct rev_cmdline_entry {
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struct object *item;
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const char *name;
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enum {
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REV_CMD_REF,
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REV_CMD_PARENTS_ONLY,
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REV_CMD_LEFT,
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REV_CMD_RIGHT,
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REV_CMD_MERGE_BASE,
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REV_CMD_REV
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} whence;
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unsigned flags;
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} *rev;
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};
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#define REVISION_WALK_WALK 0
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#define REVISION_WALK_NO_WALK_SORTED 1
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#define REVISION_WALK_NO_WALK_UNSORTED 2
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struct oidset;
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struct topo_walk_info;
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struct rev_info {
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/* Starting list */
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struct commit_list *commits;
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struct object_array pending;
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struct repository *repo;
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/* Parents of shown commits */
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struct object_array boundary_commits;
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/* The end-points specified by the end user */
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struct rev_cmdline_info cmdline;
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/* excluding from --branches, --refs, etc. expansion */
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struct string_list *ref_excludes;
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/* Basic information */
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const char *prefix;
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const char *def;
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struct pathspec prune_data;
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/*
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* Whether the arguments parsed by setup_revisions() included any
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* "input" revisions that might still have yielded an empty pending
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* list (e.g., patterns like "--all" or "--glob").
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*/
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int rev_input_given;
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/*
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* Whether we read from stdin due to the --stdin option.
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*/
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int read_from_stdin;
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/* topo-sort */
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enum rev_sort_order sort_order;
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unsigned int early_output;
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unsigned int ignore_missing:1,
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ignore_missing_links:1;
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/* Traversal flags */
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unsigned int dense:1,
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prune:1,
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no_walk:2,
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remove_empty_trees:1,
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simplify_history:1,
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show_pulls:1,
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topo_order:1,
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simplify_merges:1,
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simplify_by_decoration:1,
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single_worktree:1,
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tag_objects:1,
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tree_objects:1,
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blob_objects:1,
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verify_objects:1,
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edge_hint:1,
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edge_hint_aggressive:1,
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limited:1,
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unpacked:1,
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no_kept_objects:1,
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boundary:2,
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count:1,
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left_right:1,
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left_only:1,
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right_only:1,
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rewrite_parents:1,
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print_parents:1,
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show_decorations:1,
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reverse:1,
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reverse_output_stage:1,
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cherry_pick:1,
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cherry_mark:1,
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bisect:1,
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ancestry_path:1,
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first_parent_only:1,
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line_level_traverse:1,
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tree_blobs_in_commit_order:1,
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/*
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* Blobs are shown without regard for their existence.
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* But not so for trees: unless exclude_promisor_objects
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* is set and the tree in question is a promisor object;
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* OR ignore_missing_links is set, the revision walker
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* dies with a "bad tree object HASH" message when
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* encountering a missing tree. For callers that can
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* handle missing trees and want them to be filterable
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* and showable, set this to true. The revision walker
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* will filter and show such a missing tree as usual,
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* but will not attempt to recurse into this tree
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* object.
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*/
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do_not_die_on_missing_tree:1,
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/* for internal use only */
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exclude_promisor_objects:1;
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/* Diff flags */
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unsigned int diff:1,
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full_diff:1,
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show_root_diff:1,
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match_missing:1,
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no_commit_id:1,
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verbose_header:1,
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always_show_header:1,
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/* Diff-merge flags */
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explicit_diff_merges: 1,
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merges_need_diff: 1,
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merges_imply_patch:1,
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separate_merges: 1,
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combine_merges:1,
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combined_all_paths:1,
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dense_combined_merges:1,
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first_parent_merges:1;
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/* Format info */
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int show_notes;
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unsigned int shown_one:1,
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shown_dashes:1,
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show_merge:1,
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show_notes_given:1,
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show_signature:1,
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pretty_given:1,
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abbrev_commit:1,
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abbrev_commit_given:1,
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zero_commit:1,
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use_terminator:1,
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missing_newline:1,
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date_mode_explicit:1,
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preserve_subject:1,
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encode_email_headers:1;
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unsigned int disable_stdin:1;
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/* --show-linear-break */
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unsigned int track_linear:1,
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track_first_time:1,
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linear:1;
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struct date_mode date_mode;
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int expand_tabs_in_log; /* unset if negative */
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int expand_tabs_in_log_default;
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unsigned int abbrev;
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enum cmit_fmt commit_format;
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struct log_info *loginfo;
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int nr, total;
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const char *mime_boundary;
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const char *patch_suffix;
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int numbered_files;
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const char *reroll_count;
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char *message_id;
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struct ident_split from_ident;
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struct string_list *ref_message_ids;
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int add_signoff;
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const char *extra_headers;
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const char *log_reencode;
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const char *subject_prefix;
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int patch_name_max;
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int no_inline;
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int show_log_size;
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struct string_list *mailmap;
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/* Filter by commit log message */
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struct grep_opt grep_filter;
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/* Negate the match of grep_filter */
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int invert_grep;
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/* Display history graph */
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struct git_graph *graph;
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/* special limits */
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int skip_count;
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int max_count;
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timestamp_t max_age;
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timestamp_t min_age;
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int min_parents;
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int max_parents;
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int (*include_check)(struct commit *, void *);
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int (*include_check_obj)(struct object *obj, void *);
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void *include_check_data;
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/* diff info for patches and for paths limiting */
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struct diff_options diffopt;
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struct diff_options pruning;
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struct reflog_walk_info *reflog_info;
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struct decoration children;
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struct decoration merge_simplification;
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struct decoration treesame;
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/* notes-specific options: which refs to show */
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struct display_notes_opt notes_opt;
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/* interdiff */
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const struct object_id *idiff_oid1;
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const struct object_id *idiff_oid2;
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const char *idiff_title;
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/* range-diff */
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const char *rdiff1;
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const char *rdiff2;
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int creation_factor;
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const char *rdiff_title;
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/* commit counts */
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int count_left;
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int count_right;
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int count_same;
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/* line level range that we are chasing */
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struct decoration line_log_data;
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/* copies of the parent lists, for --full-diff display */
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struct saved_parents *saved_parents_slab;
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struct commit_list *previous_parents;
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const char *break_bar;
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struct revision_sources *sources;
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struct topo_walk_info *topo_walk_info;
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/* Commit graph bloom filter fields */
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/* The bloom filter key(s) for the pathspec */
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struct bloom_key *bloom_keys;
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int bloom_keys_nr;
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/*
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* The bloom filter settings used to generate the key.
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* This is loaded from the commit-graph being used.
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*/
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struct bloom_filter_settings *bloom_filter_settings;
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/* misc. flags related to '--no-kept-objects' */
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unsigned keep_pack_cache_flags;
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};
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int ref_excluded(struct string_list *, const char *path);
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void clear_ref_exclusion(struct string_list **);
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void add_ref_exclusion(struct string_list **, const char *exclude);
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#define REV_TREE_SAME 0
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#define REV_TREE_NEW 1 /* Only new files */
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#define REV_TREE_OLD 2 /* Only files removed */
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#define REV_TREE_DIFFERENT 3 /* Mixed changes */
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/* revision.c */
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typedef void (*show_early_output_fn_t)(struct rev_info *, struct commit_list *);
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extern volatile show_early_output_fn_t show_early_output;
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struct setup_revision_opt {
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const char *def;
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void (*tweak)(struct rev_info *, struct setup_revision_opt *);
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const char *submodule; /* TODO: drop this and use rev_info->repo */
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unsigned int assume_dashdash:1,
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allow_exclude_promisor_objects:1;
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unsigned revarg_opt;
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};
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#ifndef NO_THE_REPOSITORY_COMPATIBILITY_MACROS
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#define init_revisions(revs, prefix) repo_init_revisions(the_repository, revs, prefix)
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#endif
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/**
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* Initialize a rev_info structure with default values. The third parameter may
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* be NULL or can be prefix path, and then the `.prefix` variable will be set
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* to it. This is typically the first function you want to call when you want
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* to deal with a revision list. After calling this function, you are free to
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* customize options, like set `.ignore_merges` to 0 if you don't want to
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* ignore merges, and so on.
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*/
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void repo_init_revisions(struct repository *r,
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struct rev_info *revs,
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const char *prefix);
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/**
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* Parse revision information, filling in the `rev_info` structure, and
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* removing the used arguments from the argument list. Returns the number
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* of arguments left that weren't recognized, which are also moved to the
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* head of the argument list. The last parameter is used in case no
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* parameter given by the first two arguments.
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*/
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int setup_revisions(int argc, const char **argv, struct rev_info *revs,
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struct setup_revision_opt *);
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void parse_revision_opt(struct rev_info *revs, struct parse_opt_ctx_t *ctx,
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const struct option *options,
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const char * const usagestr[]);
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#define REVARG_CANNOT_BE_FILENAME 01
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#define REVARG_COMMITTISH 02
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int handle_revision_arg(const char *arg, struct rev_info *revs,
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int flags, unsigned revarg_opt);
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/**
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* Reset the flags used by the revision walking api. You can use this to do
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* multiple sequential revision walks.
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*/
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void reset_revision_walk(void);
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/**
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* Prepares the rev_info structure for a walk. You should check if it returns
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* any error (non-zero return code) and if it does not, you can start using
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* get_revision() to do the iteration.
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*/
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int prepare_revision_walk(struct rev_info *revs);
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/**
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* Takes a pointer to a `rev_info` structure and iterates over it, returning a
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* `struct commit *` each time you call it. The end of the revision list is
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* indicated by returning a NULL pointer.
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*/
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struct commit *get_revision(struct rev_info *revs);
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const char *get_revision_mark(const struct rev_info *revs,
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const struct commit *commit);
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void put_revision_mark(const struct rev_info *revs,
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const struct commit *commit);
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void mark_parents_uninteresting(struct commit *commit);
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void mark_tree_uninteresting(struct repository *r, struct tree *tree);
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void mark_trees_uninteresting_sparse(struct repository *r, struct oidset *trees);
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void show_object_with_name(FILE *, struct object *, const char *);
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/**
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* This function can be used if you want to add commit objects as revision
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* information. You can use the `UNINTERESTING` object flag to indicate if
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* you want to include or exclude the given commit (and commits reachable
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* from the given commit) from the revision list.
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*
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* NOTE: If you have the commits as a string list then you probably want to
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* use setup_revisions(), instead of parsing each string and using this
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* function.
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*/
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void add_pending_object(struct rev_info *revs,
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struct object *obj, const char *name);
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void add_pending_oid(struct rev_info *revs,
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const char *name, const struct object_id *oid,
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unsigned int flags);
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void add_head_to_pending(struct rev_info *);
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void add_reflogs_to_pending(struct rev_info *, unsigned int flags);
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void add_index_objects_to_pending(struct rev_info *, unsigned int flags);
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enum commit_action {
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commit_ignore,
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commit_show,
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commit_error
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};
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enum commit_action get_commit_action(struct rev_info *revs,
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struct commit *commit);
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enum commit_action simplify_commit(struct rev_info *revs,
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struct commit *commit);
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enum rewrite_result {
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rewrite_one_ok,
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rewrite_one_noparents,
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rewrite_one_error
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};
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typedef enum rewrite_result (*rewrite_parent_fn_t)(struct rev_info *revs, struct commit **pp);
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int rewrite_parents(struct rev_info *revs,
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struct commit *commit,
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rewrite_parent_fn_t rewrite_parent);
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/*
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* The log machinery saves the original parent list so that
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* get_saved_parents() can later tell what the real parents of the
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* commits are, when commit->parents has been modified by history
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* simpification.
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*
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* get_saved_parents() will transparently return commit->parents if
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* history simplification is off.
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*/
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struct commit_list *get_saved_parents(struct rev_info *revs, const struct commit *commit);
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#endif
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