streaming.c: remove {open,close,read}_method_decl() macros

Remove the {open,close,read}_method_decl() macros added in
46bf043807 (streaming: a new API to read from the object store,
2011-05-11) in favor of inlining the definition of the arguments of
these functions.

Since we'll end up using them via the "{open,close,read}_istream_fn"
types we don't gain anything in the way of compiler checking by using
these macros, and as of preceding commits we no longer need to declare
these argument lists twice. So declaring them at a distance just
serves to make the code less readable.

Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

streaming.c

@@ -21,20 +21,6 @@ struct stream_vtbl {
 	read_istream_fn read;
 };
 
-#define open_method_decl(name) \
-	int open_istream_ ##name \
-	(struct git_istream *st, struct repository *r, \
-	 struct object_info *oi, const struct object_id *oid, \
-	 enum object_type *type)
-
-#define close_method_decl(name) \
-	int close_istream_ ##name \
-	(struct git_istream *st)
-
-#define read_method_decl(name) \
-	ssize_t read_istream_ ##name \
-	(struct git_istream *st, char *buf, size_t sz)
-
 #define FILTER_BUFFER (1024*16)
 
 struct filtered_istream {
@@ -95,13 +81,14 @@ static void close_deflated_stream(struct git_istream *st)
  *
  *****************************************************************/
 
-static close_method_decl(filtered)
+static int close_istream_filtered(struct git_istream *st)
 {
 	free_stream_filter(st->u.filtered.filter);
 	return close_istream(st->u.filtered.upstream);
 }
 
-static read_method_decl(filtered)
+static ssize_t read_istream_filtered(struct git_istream *st, char *buf,
+				     size_t sz)
 {
 	struct filtered_istream *fs = &(st->u.filtered);
 	size_t filled = 0;
@@ -187,7 +174,7 @@ static struct git_istream *attach_stream_filter(struct git_istream *st,
  *
  *****************************************************************/
 
-static read_method_decl(loose)
+static ssize_t read_istream_loose(struct git_istream *st, char *buf, size_t sz)
 {
 	size_t total_read = 0;
 
@@ -232,7 +219,7 @@ static read_method_decl(loose)
 	return total_read;
 }
 
-static close_method_decl(loose)
+static int close_istream_loose(struct git_istream *st)
 {
 	close_deflated_stream(st);
 	munmap(st->u.loose.mapped, st->u.loose.mapsize);
@@ -244,7 +231,10 @@ static struct stream_vtbl loose_vtbl = {
 	read_istream_loose,
 };
 
-static open_method_decl(loose)
+static int open_istream_loose(struct git_istream *st, struct repository *r,
+			      struct object_info *oi,
+			      const struct object_id *oid,
+			      enum object_type *type)
 {
 	st->u.loose.mapped = map_loose_object(r, oid, &st->u.loose.mapsize);
 	if (!st->u.loose.mapped)
@@ -275,7 +265,8 @@ static open_method_decl(loose)
  *
  *****************************************************************/
 
-static read_method_decl(pack_non_delta)
+static ssize_t read_istream_pack_non_delta(struct git_istream *st, char *buf,
+					   size_t sz)
 {
 	size_t total_read = 0;
 
@@ -333,7 +324,7 @@ static read_method_decl(pack_non_delta)
 	return total_read;
 }
 
-static close_method_decl(pack_non_delta)
+static int close_istream_pack_non_delta(struct git_istream *st)
 {
 	close_deflated_stream(st);
 	return 0;
@@ -344,7 +335,11 @@ static struct stream_vtbl pack_non_delta_vtbl = {
 	read_istream_pack_non_delta,
 };
 
-static open_method_decl(pack_non_delta)
+static int open_istream_pack_non_delta(struct git_istream *st,
+				       struct repository *r,
+				       struct object_info *oi,
+				       const struct object_id *oid,
+				       enum object_type *type)
 {
 	struct pack_window *window;
 	enum object_type in_pack_type;
@@ -379,13 +374,13 @@ static open_method_decl(pack_non_delta)
  *
  *****************************************************************/
 
-static close_method_decl(incore)
+static int close_istream_incore(struct git_istream *st)
 {
 	free(st->u.incore.buf);
 	return 0;
 }
 
-static read_method_decl(incore)
+static ssize_t read_istream_incore(struct git_istream *st, char *buf, size_t sz)
 {
 	size_t read_size = sz;
 	size_t remainder = st->size - st->u.incore.read_ptr;
@@ -404,7 +399,9 @@ static struct stream_vtbl incore_vtbl = {
 	read_istream_incore,
 };
 
-static open_method_decl(incore)
+static int open_istream_incore(struct git_istream *st, struct repository *r,
+			   struct object_info *oi, const struct object_id *oid,
+			   enum object_type *type)
 {
 	st->u.incore.buf = read_object_file_extended(r, oid, type, &st->size, 0);
 	st->u.incore.read_ptr = 0;