Re: [PATCH 4/7] grep: re-order rev-parsing loop

2017-02-14 Thread Brandon Williams
On 02/14, Jeff King wrote:
> - /* Is it a rev? */
> - if (!get_sha1_with_context(arg, 0, sha1, )) {
> - struct object *object = parse_object_or_die(sha1, arg);
> - if (!seen_dashdash)
> - verify_non_filename(prefix, arg);
> - add_object_array_with_path(object, arg, , oc.mode, 
> oc.path);
> - continue;
> - }
> - break;
> +
> + /* Stop at the first non-rev */
> + if (get_sha1_with_context(arg, 0, sha1, ))
> + break;
> +
> + object = parse_object_or_die(sha1, arg);
> + if (!seen_dashdash)
> + verify_non_filename(prefix, arg);
> + add_object_array_with_path(object, arg, , oc.mode, 
> oc.path);

This is much more readable!

-- 
Brandon Williams


[PATCH 4/7] grep: re-order rev-parsing loop

2017-02-13 Thread Jeff King
We loop over the arguments, but every branch of the loop
hits either a "continue" or a "break". Surely we can make
this simpler.

The final conditional is:

  if (arg is a rev) {
  ... handle rev ...
  continue;
  }
  break;

We can rewrite this as:

  if (arg is not a rev)
  break;

  ... handle rev ...

That makes the flow a little bit simpler, and will make
things much easier to follow when we add more logic in
future patches.

Signed-off-by: Jeff King 
---
 builtin/grep.c | 20 +++-
 1 file changed, 11 insertions(+), 9 deletions(-)

diff --git a/builtin/grep.c b/builtin/grep.c
index 081e1b57a..461347adb 100644
--- a/builtin/grep.c
+++ b/builtin/grep.c
@@ -1154,20 +1154,22 @@ int cmd_grep(int argc, const char **argv, const char 
*prefix)
const char *arg = argv[i];
unsigned char sha1[20];
struct object_context oc;
+   struct object *object;
+
if (!strcmp(arg, "--")) {
i++;
seen_dashdash = 1;
break;
}
-   /* Is it a rev? */
-   if (!get_sha1_with_context(arg, 0, sha1, )) {
-   struct object *object = parse_object_or_die(sha1, arg);
-   if (!seen_dashdash)
-   verify_non_filename(prefix, arg);
-   add_object_array_with_path(object, arg, , oc.mode, 
oc.path);
-   continue;
-   }
-   break;
+
+   /* Stop at the first non-rev */
+   if (get_sha1_with_context(arg, 0, sha1, ))
+   break;
+
+   object = parse_object_or_die(sha1, arg);
+   if (!seen_dashdash)
+   verify_non_filename(prefix, arg);
+   add_object_array_with_path(object, arg, , oc.mode, 
oc.path);
}
 
/* The rest are paths */
-- 
2.12.0.rc1.471.ga79ec8999