revision: put object filter into struct rev_info

Placing a 'struct list_objects_filter_options' within 'struct rev_info'
will assist making some bookkeeping around object filters in the future.

For now, let's use this new member to remove a static global instance of
the struct from builtin/rev-list.c.

Signed-off-by: Derrick Stolee <derrickstolee@github.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

builtin/rev-list.c

@@ -62,7 +62,6 @@ static const char rev_list_usage[] =
 static struct progress *progress;
 static unsigned progress_counter;
 
-static struct list_objects_filter_options filter_options;
 static struct oidset omitted_objects;
 static int arg_print_omitted; /* print objects omitted by filter */
 
@@ -400,7 +399,6 @@ static inline int parse_missing_action_value(const char *value)
 }
 
 static int try_bitmap_count(struct rev_info *revs,
-			    struct list_objects_filter_options *filter,
 			    int filter_provided_objects)
 {
 	uint32_t commit_count = 0,
@@ -436,7 +434,8 @@ static int try_bitmap_count(struct rev_info *revs,
 	 */
 	max_count = revs->max_count;
 
-	bitmap_git = prepare_bitmap_walk(revs, filter, filter_provided_objects);
+	bitmap_git = prepare_bitmap_walk(revs, &revs->filter,
+					 filter_provided_objects);
 	if (!bitmap_git)
 		return -1;
 
@@ -453,7 +452,6 @@ static int try_bitmap_count(struct rev_info *revs,
 }
 
 static int try_bitmap_traversal(struct rev_info *revs,
-				struct list_objects_filter_options *filter,
 				int filter_provided_objects)
 {
 	struct bitmap_index *bitmap_git;
@@ -465,7 +463,8 @@ static int try_bitmap_traversal(struct rev_info *revs,
 	if (revs->max_count >= 0)
 		return -1;
 
-	bitmap_git = prepare_bitmap_walk(revs, filter, filter_provided_objects);
+	bitmap_git = prepare_bitmap_walk(revs, &revs->filter,
+					 filter_provided_objects);
 	if (!bitmap_git)
 		return -1;
 
@@ -475,7 +474,6 @@ static int try_bitmap_traversal(struct rev_info *revs,
 }
 
 static int try_bitmap_disk_usage(struct rev_info *revs,
-				 struct list_objects_filter_options *filter,
 				 int filter_provided_objects)
 {
 	struct bitmap_index *bitmap_git;
@@ -483,7 +481,7 @@ static int try_bitmap_disk_usage(struct rev_info *revs,
 	if (!show_disk_usage)
 		return -1;
 
-	bitmap_git = prepare_bitmap_walk(revs, filter, filter_provided_objects);
+	bitmap_git = prepare_bitmap_walk(revs, &revs->filter, filter_provided_objects);
 	if (!bitmap_git)
 		return -1;
 
@@ -597,13 +595,13 @@ int cmd_rev_list(int argc, const char **argv, const char *prefix)
 		}
 
 		if (skip_prefix(arg, ("--" CL_ARG__FILTER "="), &arg)) {
-			parse_list_objects_filter(&filter_options, arg);
+			parse_list_objects_filter(&revs.filter, arg);
-			if (filter_options.choice && !revs.blob_objects)
+			if (revs.filter.choice && !revs.blob_objects)
 				die(_("object filtering requires --objects"));
 			continue;
 		}
 		if (!strcmp(arg, ("--no-" CL_ARG__FILTER))) {
-			list_objects_filter_set_no_filter(&filter_options);
+			list_objects_filter_set_no_filter(&revs.filter);
 			continue;
 		}
 		if (!strcmp(arg, "--filter-provided-objects")) {
@@ -688,11 +686,11 @@ int cmd_rev_list(int argc, const char **argv, const char *prefix)
 		progress = start_delayed_progress(show_progress, 0);
 
 	if (use_bitmap_index) {
-		if (!try_bitmap_count(&revs, &filter_options, filter_provided_objects))
+		if (!try_bitmap_count(&revs, filter_provided_objects))
 			return 0;
-		if (!try_bitmap_disk_usage(&revs, &filter_options, filter_provided_objects))
+		if (!try_bitmap_disk_usage(&revs, filter_provided_objects))
 			return 0;
-		if (!try_bitmap_traversal(&revs, &filter_options, filter_provided_objects))
+		if (!try_bitmap_traversal(&revs, filter_provided_objects))
 			return 0;
 	}
 
@@ -733,7 +731,7 @@ int cmd_rev_list(int argc, const char **argv, const char *prefix)
 		oidset_init(&missing_objects, DEFAULT_OIDSET_SIZE);
 
 	traverse_commit_list_filtered(
-		&filter_options, &revs, show_commit, show_object, &info,
+		&revs.filter, &revs, show_commit, show_object, &info,
 		(arg_print_omitted ? &omitted_objects : NULL));
 
 	if (arg_print_omitted) {

revision.h

@@ -8,6 +8,7 @@
 #include "pretty.h"
 #include "diff.h"
 #include "commit-slab-decl.h"
+#include "list-objects-filter-options.h"
 
 /**
  * The revision walking API offers functions to build a list of revisions
@@ -94,6 +95,12 @@ struct rev_info {
 	/* The end-points specified by the end user */
 	struct rev_cmdline_info cmdline;
 
+	/*
+	 * Object filter options. No filtering is specified
+	 * if and only if filter.choice is zero.
+	 */
+	struct list_objects_filter_options filter;
+
 	/* excluding from --branches, --refs, etc. expansion */
 	struct string_list *ref_excludes;