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list-objects-filter: encapsulate filter components

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Encapsulate filter_fn, filter_free_fn, and filter_data into their own
opaque struct.

Due to opaqueness, filter_fn and filter_free_fn can no longer be
accessed directly by users. Currently, all usages of filter_fn are
guarded by a necessary check:

	(obj->flags & NOT_USER_GIVEN) && filter_fn

Take the opportunity to include this check into the new function
list_objects_filter__filter_object(), so that we no longer need to write
this check at every caller of the filter function.

Also, the init functions in list-objects-filter.c no longer need to
confusingly return the filter constituents in various places (filter_fn
and filter_free_fn as out parameters, and filter_data as the function's
return value); they can just initialize the "struct filter" passed in.

Helped-by: Jeff Hostetler <git@jeffhostetler.com>
Helped-by: Jonathan Tan <jonathantanmy@google.com>
Helped-by: Junio C Hamano <gitster@pobox.com>
Signed-off-by: Matthew DeVore <matvore@google.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This commit is contained in:
Matthew DeVore
2019-06-27 15:54:05 -07:00
committed by Junio C Hamano
parent 8dca754b1e
commit 9430147ca0
3 changed files with 113 additions and 89 deletions
Download Patch File Download Diff File Expand all files Collapse all files

55
list-objects.c
View File

@ -18,8 +18,7 @@ struct traversal_context {
show_object_fn show_object;
show_commit_fn show_commit;
void *show_data;
filter_object_fn filter_fn;
void *filter_data;
struct filter *filter;
};
static void process_blob(struct traversal_context *ctx,
@ -29,7 +28,7 @@ static void process_blob(struct traversal_context *ctx,
{
struct object *obj = &blob->object;
size_t pathlen;
enum list_objects_filter_result r = LOFR_MARK_SEEN | LOFR_DO_SHOW;
enum list_objects_filter_result r;
if (!ctx->revs->blob_objects)
return;
@ -54,11 +53,10 @@ static void process_blob(struct traversal_context *ctx,
pathlen = path->len;
strbuf_addstr(path, name);
if ((obj->flags & NOT_USER_GIVEN) && ctx->filter_fn)
r = ctx->filter_fn(ctx->revs->repo,
LOFS_BLOB, obj,
path->buf, &path->buf[pathlen],
ctx->filter_data);
r = list_objects_filter__filter_object(ctx->revs->repo,
LOFS_BLOB, obj,
path->buf, &path->buf[pathlen],
ctx->filter);
if (r & LOFR_MARK_SEEN)
obj->flags |= SEEN;
if (r & LOFR_DO_SHOW)
@ -157,7 +155,7 @@ static void process_tree(struct traversal_context *ctx,
struct object *obj = &tree->object;
struct rev_info *revs = ctx->revs;
int baselen = base->len;
enum list_objects_filter_result r = LOFR_MARK_SEEN | LOFR_DO_SHOW;
enum list_objects_filter_result r;
int failed_parse;
if (!revs->tree_objects)
@ -186,11 +184,10 @@ static void process_tree(struct traversal_context *ctx,
}
strbuf_addstr(base, name);
if ((obj->flags & NOT_USER_GIVEN) && ctx->filter_fn)
r = ctx->filter_fn(ctx->revs->repo,
LOFS_BEGIN_TREE, obj,
base->buf, &base->buf[baselen],
ctx->filter_data);
r = list_objects_filter__filter_object(ctx->revs->repo,
LOFS_BEGIN_TREE, obj,
base->buf, &base->buf[baselen],
ctx->filter);
if (r & LOFR_MARK_SEEN)
obj->flags |= SEEN;
if (r & LOFR_DO_SHOW)
@ -203,16 +200,14 @@ static void process_tree(struct traversal_context *ctx,
else if (!failed_parse)
process_tree_contents(ctx, tree, base);
if ((obj->flags & NOT_USER_GIVEN) && ctx->filter_fn) {
r = ctx->filter_fn(ctx->revs->repo,
LOFS_END_TREE, obj,
base->buf, &base->buf[baselen],
ctx->filter_data);
if (r & LOFR_MARK_SEEN)
obj->flags |= SEEN;
if (r & LOFR_DO_SHOW)
ctx->show_object(obj, base->buf, ctx->show_data);
}
r = list_objects_filter__filter_object(ctx->revs->repo,
LOFS_END_TREE, obj,
base->buf, &base->buf[baselen],
ctx->filter);
if (r & LOFR_MARK_SEEN)
obj->flags |= SEEN;
if (r & LOFR_DO_SHOW)
ctx->show_object(obj, base->buf, ctx->show_data);
strbuf_setlen(base, baselen);
free_tree_buffer(tree);
@ -402,8 +397,7 @@ void traverse_commit_list(struct rev_info *revs,
ctx.show_commit = show_commit;
ctx.show_object = show_object;
ctx.show_data = show_data;
ctx.filter_fn = NULL;
ctx.filter_data = NULL;
ctx.filter = NULL;
do_traverse(&ctx);
}
@ -416,17 +410,12 @@ void traverse_commit_list_filtered(
struct oidset *omitted)
{
struct traversal_context ctx;
filter_free_fn filter_free_fn = NULL;
ctx.revs = revs;
ctx.show_object = show_object;
ctx.show_commit = show_commit;
ctx.show_data = show_data;
ctx.filter_fn = NULL;
ctx.filter_data = list_objects_filter__init(omitted, filter_options,
&ctx.filter_fn, &filter_free_fn);
ctx.filter = list_objects_filter__init(omitted, filter_options);
do_traverse(&ctx);
if (ctx.filter_data && filter_free_fn)
filter_free_fn(ctx.filter_data);
list_objects_filter__free(ctx.filter);
}