[PATCH v2 1/6] trailer: separate public from internal portion of trailer_iterator

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From: Linus Arver <linusa@xxxxxxxxxx>

The fields here are not meant to be used by downstream callers, so put
them behind an anonymous struct named as "internal" to warn against
their use. This follows the pattern in 576de3d956 (unpack_trees: start
splitting internal fields from public API, 2023-02-27).

Signed-off-by: Linus Arver <linusa@xxxxxxxxxx>
---
 trailer.c | 10 +++++-----
 trailer.h |  6 ++++--
 2 files changed, 9 insertions(+), 7 deletions(-)

diff --git a/trailer.c b/trailer.c
index f408f9b058d..de4bdece847 100644
--- a/trailer.c
+++ b/trailer.c
@@ -1220,14 +1220,14 @@ void trailer_iterator_init(struct trailer_iterator *iter, const char *msg)
 	strbuf_init(&iter->key, 0);
 	strbuf_init(&iter->val, 0);
 	opts.no_divider = 1;
-	trailer_info_get(&iter->info, msg, &opts);
-	iter->cur = 0;
+	trailer_info_get(&iter->internal.info, msg, &opts);
+	iter->internal.cur = 0;
 }
 
 int trailer_iterator_advance(struct trailer_iterator *iter)
 {
-	while (iter->cur < iter->info.trailer_nr) {
-		char *trailer = iter->info.trailers[iter->cur++];
+	while (iter->internal.cur < iter->internal.info.trailer_nr) {
+		char *trailer = iter->internal.info.trailers[iter->internal.cur++];
 		int separator_pos = find_separator(trailer, separators);
 
 		if (separator_pos < 1)
@@ -1245,7 +1245,7 @@ int trailer_iterator_advance(struct trailer_iterator *iter)
 
 void trailer_iterator_release(struct trailer_iterator *iter)
 {
-	trailer_info_release(&iter->info);
+	trailer_info_release(&iter->internal.info);
 	strbuf_release(&iter->val);
 	strbuf_release(&iter->key);
 }
diff --git a/trailer.h b/trailer.h
index 795d2fccfd9..ab2cd017567 100644
--- a/trailer.h
+++ b/trailer.h
@@ -119,8 +119,10 @@ struct trailer_iterator {
 	struct strbuf val;
 
 	/* private */
-	struct trailer_info info;
-	size_t cur;
+	struct {
+		struct trailer_info info;
+		size_t cur;
+	} internal;
 };
 
 /*
-- 
gitgitgadget




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