[PATCH v2 5/7] diff-lib, read-tree, unpack-trees: mark cache_entry pointers const
- From
René Scharfe <rene.scharfe@lsrfire.ath.cx>
- Date
- Jun 2, 2013, 15:46 UTC
- Message-ID
- <1370188017-24672-6-git-send-email-rene.scharfe@lsrfire.ath.cx>
- In-Reply-To
- <1370188017-24672-1-git-send-email-rene.scharfe@lsrfire.ath.cx>
Add const to struct cache_entry pointers throughout the tree which are only used for reading. This allows callers to pass in const pointers.
Signed-off-by: René Scharfe <rene.scharfe@lsrfire.ath.cx> --- builtin/read-tree.c | 2 +- diff-lib.c | 23 +++++++------- unpack-trees.c | 91 +++++++++++++++++++++++++++++------------------------ 3 files changed, 63 insertions(+), 53 deletions(-)
diff --git a/builtin/read-tree.c b/builtin/read-tree.c index 042ac1b..b847486 100644 --- a/builtin/read-tree.c +++ b/builtin/read-tree.c @@ -66,7 +66,7 @@ static int exclude_per_directory_cb(const struct option *opt, const char *arg, return 0; } -static void debug_stage(const char *label, struct cache_entry *ce, +static void debug_stage(const char *label, const struct cache_entry *ce, struct unpack_trees_options *o) { printf("%s ", label); diff --git a/diff-lib.c b/diff-lib.c index f35de0f..83d0cb8 100644 --- a/diff-lib.c +++ b/diff-lib.c @@ -64,8 +64,9 @@ static int check_removed(const struct cache_entry *ce, struct stat *st) * commits, untracked content and/or modified content). */ static int match_stat_with_submodule(struct diff_options *diffopt, - struct cache_entry *ce, struct stat *st, - unsigned ce_option, unsigned *dirty_submodule) + const struct cache_entry *ce, + struct stat *st, unsigned ce_option, + unsigned *dirty_submodule) { int changed = ce_match_stat(ce, st, ce_option); if (S_ISGITLINK(ce->ce_mode)) { @@ -237,7 +238,7 @@ int run_diff_files(struct rev_info *revs, unsigned int option) /* A file entry went away or appeared */ static void diff_index_show_file(struct rev_info *revs, const char *prefix, - struct cache_entry *ce, + const struct cache_entry *ce, const unsigned char *sha1, int sha1_valid, unsigned int mode, unsigned dirty_submodule) @@ -246,7 +247,7 @@ static void diff_index_show_file(struct rev_info *revs, sha1, sha1_valid, ce->name, dirty_submodule); } -static int get_stat_data(struct cache_entry *ce, +static int get_stat_data(const struct cache_entry *ce, const unsigned char **sha1p, unsigned int *modep, int cached, int match_missing, @@ -283,7 +284,7 @@ static int get_stat_data(struct cache_entry *ce, } static void show_new_file(struct rev_info *revs, - struct cache_entry *new, + const struct cache_entry *new, int cached, int match_missing) { const unsigned char *sha1; @@ -302,8 +303,8 @@ static void show_new_file(struct rev_info *revs, } static int show_modified(struct rev_info *revs, - struct cache_entry *old, - struct cache_entry *new, + const struct cache_entry *old, + const struct cache_entry *new, int report_missing, int cached, int match_missing) { @@ -362,8 +363,8 @@ static int show_modified(struct rev_info *revs, * give you the position and number of entries in the index). */ static void do_oneway_diff(struct unpack_trees_options *o, - struct cache_entry *idx, - struct cache_entry *tree) + const struct cache_entry *idx, + const struct cache_entry *tree) { struct rev_info *revs = o->unpack_data; int match_missing, cached; @@ -425,8 +426,8 @@ static void do_oneway_diff(struct unpack_trees_options *o, */ static int oneway_diff(struct cache_entry **src, struct unpack_trees_options *o) { - struct cache_entry *idx = src[0]; - struct cache_entry *tree = src[1]; + const struct cache_entry *idx = src[0]; + const struct cache_entry *tree = src[1]; struct rev_info *revs = o->unpack_data; /* diff --git a/unpack-trees.c b/unpack-trees.c index 2fecef8..c5a40df 100644 --- a/unpack-trees.c +++ b/unpack-trees.c @@ -241,8 +241,11 @@ static int check_updates(struct unpack_trees_options *o) return errs != 0; } -static int verify_uptodate_sparse(struct cache_entry *ce, struct unpack_trees_options *o); -static int verify_absent_sparse(struct cache_entry *ce, enum unpack_trees_error_types, struct unpack_trees_options *o); +static int verify_uptodate_sparse(const struct cache_entry *ce, + struct unpack_trees_options *o); +static int verify_absent_sparse(const struct cache_entry *ce, + enum unpack_trees_error_types, + struct unpack_trees_options *o); static int apply_sparse_checkout(struct cache_entry *ce, struct unpack_trees_options *o) { @@ -326,7 +329,7 @@ static void mark_all_ce_unused(struct index_state *index) index->cache[i]->ce_flags &= ~(CE_UNPACKED | CE_ADDED | CE_NEW_SKIP_WORKTREE); } -static int locate_in_src_index(struct cache_entry *ce, +static int locate_in_src_index(const struct cache_entry *ce, struct unpack_trees_options *o) { struct index_state *index = o->src_index; @@ -1001,7 +1004,9 @@ static void mark_new_skip_worktree(struct exclude_list *el, select_flag, skip_wt_flag, el); } -static int verify_absent(struct cache_entry *, enum unpack_trees_error_types, struct unpack_trees_options *); +static int verify_absent(const struct cache_entry *, + enum unpack_trees_error_types, + struct unpack_trees_options *); /* * N-way merge "len" trees. Returns 0 on success, -1 on failure to manipulate the * resulting index, -2 on failure to reflect the changes to the work tree. @@ -1171,12 +1176,13 @@ return_failed: /* Here come the merge functions */ -static int reject_merge(struct cache_entry *ce, struct unpack_trees_options *o) +static int reject_merge(const struct cache_entry *ce, + struct unpack_trees_options *o) { return add_rejected_path(o, ERROR_WOULD_OVERWRITE, ce->name); } -static int same(struct cache_entry *a, struct cache_entry *b) +static int same(const struct cache_entry *a, const struct cache_entry *b) { if (!!a != !!b) return 0; @@ -1193,9 +1199,9 @@ static int same(struct cache_entry *a, struct cache_entry *b) * When a CE gets turned into an unmerged entry, we * want it to be up-to-date */ -static int verify_uptodate_1(struct cache_entry *ce, - struct unpack_trees_options *o, - enum unpack_trees_error_types error_type) +static int verify_uptodate_1(const struct cache_entry *ce, + struct unpack_trees_options *o, + enum unpack_trees_error_types error_type) { struct stat st; @@ -1234,7 +1240,7 @@ static int verify_uptodate_1(struct cache_entry *ce, add_rejected_path(o, error_type, ce->name); } -static int verify_uptodate(struct cache_entry *ce, +static int verify_uptodate(const struct cache_entry *ce, struct unpack_trees_options *o) { if (!o->skip_sparse_checkout && (ce->ce_flags & CE_NEW_SKIP_WORKTREE)) @@ -1242,13 +1248,14 @@ static int verify_uptodate(struct cache_entry *ce, return verify_uptodate_1(ce, o, ERROR_NOT_UPTODATE_FILE); } -static int verify_uptodate_sparse(struct cache_entry *ce, +static int verify_uptodate_sparse(const struct cache_entry *ce, struct unpack_trees_options *o) { return verify_uptodate_1(ce, o, ERROR_SPARSE_NOT_UPTODATE_FILE); } -static void invalidate_ce_path(struct cache_entry *ce, struct unpack_trees_options *o) +static void invalidate_ce_path(const struct cache_entry *ce, + struct unpack_trees_options *o) { if (ce) cache_tree_invalidate_path(o->src_index->cache_tree, ce->name); @@ -1261,16 +1268,16 @@ static void invalidate_ce_path(struct cache_entry *ce, struct unpack_trees_optio * Currently, git does not checkout subprojects during a superproject * checkout, so it is not going to overwrite anything. */ -static int verify_clean_submodule(struct cache_entry *ce, - enum unpack_trees_error_types error_type, - struct unpack_trees_options *o) +static int verify_clean_submodule(const struct cache_entry *ce, + enum unpack_trees_error_types error_type, + struct unpack_trees_options *o) { return 0; } -static int verify_clean_subdirectory(struct cache_entry *ce, - enum unpack_trees_error_types error_type, - struct unpack_trees_options *o) +static int verify_clean_subdirectory(const struct cache_entry *ce, + enum unpack_trees_error_types error_type, + struct unpack_trees_options *o) { /* * we are about to extract "ce->name"; we would not want to lose @@ -1356,7 +1363,7 @@ static int icase_exists(struct unpack_trees_options *o, const char *name, int le } static int check_ok_to_remove(const char *name, int len, int dtype, - struct cache_entry *ce, struct stat *st, + const struct cache_entry *ce, struct stat *st, enum unpack_trees_error_types error_type, struct unpack_trees_options *o) { @@ -1411,9 +1418,9 @@ static int check_ok_to_remove(const char *name, int len, int dtype, * We do not want to remove or overwrite a working tree file that * is not tracked, unless it is ignored. */ -static int verify_absent_1(struct cache_entry *ce, - enum unpack_trees_error_types error_type, - struct unpack_trees_options *o) +static int verify_absent_1(const struct cache_entry *ce, + enum unpack_trees_error_types error_type, + struct unpack_trees_options *o) { int len; struct stat st; @@ -1446,7 +1453,7 @@ static int verify_absent_1(struct cache_entry *ce, } } -static int verify_absent(struct cache_entry *ce, +static int verify_absent(const struct cache_entry *ce, enum unpack_trees_error_types error_type, struct unpack_trees_options *o) { @@ -1455,9 +1462,9 @@ static int verify_absent(struct cache_entry *ce, return verify_absent_1(ce, error_type, o); } -static int verify_absent_sparse(struct cache_entry *ce, - enum unpack_trees_error_types error_type, - struct unpack_trees_options *o) +static int verify_absent_sparse(const struct cache_entry *ce, + enum unpack_trees_error_types error_type, + struct unpack_trees_options *o) { enum unpack_trees_error_types orphaned_error = error_type; if (orphaned_error == ERROR_WOULD_LOSE_UNTRACKED_OVERWRITTEN) @@ -1467,7 +1474,7 @@ static int verify_absent_sparse(struct cache_entry *ce, } static int merged_entry(const struct cache_entry *ce, - struct cache_entry *old, + const struct cache_entry *old, struct unpack_trees_options *o) { int update = CE_UPDATE; @@ -1527,8 +1534,9 @@ static int merged_entry(const struct cache_entry *ce, return 1; } -static int deleted_entry(struct cache_entry *ce, struct cache_entry *old, - struct unpack_trees_options *o) +static int deleted_entry(const struct cache_entry *ce, + const struct cache_entry *old, + struct unpack_trees_options *o) { /* Did it exist in the index? */ if (!old) { @@ -1543,7 +1551,8 @@ static int deleted_entry(struct cache_entry *ce, struct cache_entry *old, return 1; } -static int keep_entry(struct cache_entry *ce, struct unpack_trees_options *o) +static int keep_entry(const struct cache_entry *ce, + struct unpack_trees_options *o) { add_entry(o, ce, 0, 0); return 1; @@ -1567,9 +1576,9 @@ static void show_stage_entry(FILE *o, int threeway_merge(struct cache_entry **stages, struct unpack_trees_options *o) { - struct cache_entry *index; - struct cache_entry *head; - struct cache_entry *remote = stages[o->head_idx + 1]; + const struct cache_entry *index; + const struct cache_entry *head; + const struct cache_entry *remote = stages[o->head_idx + 1]; int count; int head_match = 0; int remote_match = 0; @@ -1654,7 +1663,7 @@ int threeway_merge(struct cache_entry **stages, struct unpack_trees_options *o) if (o->aggressive) { int head_deleted = !head; int remote_deleted = !remote; - struct cache_entry *ce = NULL; + const struct cache_entry *ce = NULL; if (index) ce = index; @@ -1739,9 +1748,9 @@ int threeway_merge(struct cache_entry **stages, struct unpack_trees_options *o) */ int twoway_merge(struct cache_entry **src, struct unpack_trees_options *o) { - struct cache_entry *current = src[0]; - struct cache_entry *oldtree = src[1]; - struct cache_entry *newtree = src[2]; + const struct cache_entry *current = src[0]; + const struct cache_entry *oldtree = src[1]; + const struct cache_entry *newtree = src[2]; if (o->merge_size != 2) return error("Cannot do a twoway merge of %d trees", @@ -1806,8 +1815,8 @@ int twoway_merge(struct cache_entry **src, struct unpack_trees_options *o) int bind_merge(struct cache_entry **src, struct unpack_trees_options *o) { - struct cache_entry *old = src[0]; - struct cache_entry *a = src[1]; + const struct cache_entry *old = src[0]; + const struct cache_entry *a = src[1]; if (o->merge_size != 1) return error("Cannot do a bind merge of %d trees", @@ -1829,8 +1838,8 @@ int bind_merge(struct cache_entry **src, */ int oneway_merge(struct cache_entry **src, struct unpack_trees_options *o) { - struct cache_entry *old = src[0]; - struct cache_entry *a = src[1]; + const struct cache_entry *old = src[0]; + const struct cache_entry *a = src[1]; if (o->merge_size != 1) return error("Cannot do a oneway merge of %d trees",
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