[PATCH v3 19/26] Wrap CE_VALID test with ce_valid()

["Nguyễn Thái Ngọc Duy" <pclouds@gmail.com>]

The next patch wants to ignore CE_VALID under some condition but not
really clears it. Centralizing its access makes such a change easier.

Not all "ce_flags & CE_VALID" is converted though. The tests that
really mean _bit_ CE_VALID remains so. The tests that mean "ignore
worktree" are converted.

Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com>
---
 builtin/grep.c | 2 +-
 cache.h        | 4 ++++
 diff-lib.c     | 4 ++--
 diff.c         | 2 +-
 read-cache.c   | 6 +++---
 unpack-trees.c | 2 +-
 6 files changed, 12 insertions(+), 8 deletions(-)

diff --git a/builtin/grep.c b/builtin/grep.c
index 63f8603..00526a1 100644
--- a/builtin/grep.c
+++ b/builtin/grep.c
@@ -386,7 +386,7 @@ static int grep_cache(struct grep_opt *opt, const struct pathspec *pathspec, int
 		 * are identical, even if worktree file has been modified, so use
 		 * cache version instead
 		 */
-		if (cached || (ce->ce_flags & CE_VALID) || ce_skip_worktree(ce)) {
+		if (cached || ce_valid(ce) || ce_skip_worktree(ce)) {
 			if (ce_stage(ce))
 				continue;
 			hit |= grep_sha1(opt, ce->sha1, ce->name, 0, ce->name);
diff --git a/cache.h b/cache.h
index 9f7d952..c229bf9 100644
--- a/cache.h
+++ b/cache.h
@@ -222,6 +222,10 @@ static inline unsigned create_ce_flags(unsigned stage)
 #define ce_uptodate(ce) ((ce)->ce_flags & CE_UPTODATE)
 #define ce_skip_worktree(ce) ((ce)->ce_flags & CE_SKIP_WORKTREE)
 #define ce_mark_uptodate(ce) ((ce)->ce_flags |= CE_UPTODATE)
+static inline int ce_valid(const struct cache_entry *ce)
+{
+	return ce->ce_flags & CE_VALID;
+}
 
 #define ce_permissions(mode) (((mode) & 0100) ? 0755 : 0644)
 static inline unsigned int create_ce_mode(unsigned int mode)
diff --git a/diff-lib.c b/diff-lib.c
index 346cac6..dcda7f3 100644
--- a/diff-lib.c
+++ b/diff-lib.c
@@ -198,7 +198,7 @@ int run_diff_files(struct rev_info *revs, unsigned int option)
 			continue;
 
 		/* If CE_VALID is set, don't look at workdir for file removal */
-		changed = (ce->ce_flags & CE_VALID) ? 0 : check_removed(ce, &st);
+		changed = ce_valid(ce) ? 0 : check_removed(ce, &st);
 		if (changed) {
 			if (changed < 0) {
 				perror(ce->name);
@@ -369,7 +369,7 @@ static void do_oneway_diff(struct unpack_trees_options *o,
 
 	/* if the entry is not checked out, don't examine work tree */
 	cached = o->index_only ||
-		(idx && ((idx->ce_flags & CE_VALID) || ce_skip_worktree(idx)));
+		(idx && (ce_valid(idx) || ce_skip_worktree(idx)));
 	/*
 	 * Backward compatibility wart - "diff-index -m" does
 	 * not mean "do not ignore merges", but "match_missing".
diff --git a/diff.c b/diff.c
index 8e4a6a9..22c73fe 100644
--- a/diff.c
+++ b/diff.c
@@ -2636,7 +2636,7 @@ static int reuse_worktree_file(const char *name, const unsigned char *sha1, int
 	 * If ce is marked as "assume unchanged", there is no
 	 * guarantee that work tree matches what we are looking for.
 	 */
-	if ((ce->ce_flags & CE_VALID) || ce_skip_worktree(ce))
+	if (ce_valid(ce) || ce_skip_worktree(ce))
 		return 0;
 
 	/*
diff --git a/read-cache.c b/read-cache.c
index 5540b06..95c9ccb 100644
--- a/read-cache.c
+++ b/read-cache.c
@@ -289,8 +289,8 @@ int ie_match_stat(const struct index_state *istate,
 	 */
 	if (!ignore_skip_worktree && ce_skip_worktree(ce))
 		return 0;
-	if (!ignore_valid && (ce->ce_flags & CE_VALID))
-		return 0;
+	if (!ignore_valid && ce_valid(ce))
+			return 0;
 
 	/*
 	 * Intent-to-add entries have not been added, so the index entry
@@ -1047,7 +1047,7 @@ static struct cache_entry *refresh_cache_ent(struct index_state *istate,
 		ce_mark_uptodate(ce);
 		return ce;
 	}
-	if (!ignore_valid && (ce->ce_flags & CE_VALID)) {
+	if (!ignore_valid && ce_valid(ce)) {
 		ce_mark_uptodate(ce);
 		return ce;
 	}
diff --git a/unpack-trees.c b/unpack-trees.c
index 164354d..61c3f35 100644
--- a/unpack-trees.c
+++ b/unpack-trees.c
@@ -1215,7 +1215,7 @@ static int verify_uptodate_1(const struct cache_entry *ce,
 	 * if this entry is truly up-to-date because this file may be
 	 * overwritten.
 	 */
-	if ((ce->ce_flags & CE_VALID) || ce_skip_worktree(ce))
+	if (ce_valid(ce) || ce_skip_worktree(ce))
 		; /* keep checking */
 	else if (o->reset || ce_uptodate(ce))
 		return 0;
-- 
1.8.5.2.240.g8478abd