X-Git-Url: https://gerrit.automotivelinux.org/gerrit/gitweb?a=blobdiff_plain;f=pb_common.h;h=60b3d37491446fa18b4f8d2003cd6b287d41d6bd;hb=516a5eab2c5904b2cd39d4958b0c101bafd8e060;hp=e85f000c6ac9389ddb93af21e242b2789b55e858;hpb=a641e21b34aed824b6b919f7ab9937eaadf09473;p=apps%2Fagl-service-can-low-level.git

diff --git a/pb_common.h b/pb_common.h
index e85f000c..60b3d374 100644
--- a/pb_common.h
+++ b/pb_common.h
@@ -2,8 +2,8 @@
  * These functions are rarely needed by applications directly.
  */
 
-#ifndef _PB_COMMON_H_
-#define _PB_COMMON_H_
+#ifndef PB_COMMON_H_INCLUDED
+#define PB_COMMON_H_INCLUDED
 
 #include "pb.h"
 
@@ -12,17 +12,19 @@ extern "C" {
 #endif
 
 /* Iterator for pb_field_t list */
-typedef struct {
+struct pb_field_iter_s {
     const pb_field_t *start;       /* Start of the pb_field_t array */
     const pb_field_t *pos;         /* Current position of the iterator */
     unsigned required_field_index; /* Zero-based index that counts only the required fields */
-    void *dest_struct;             /* Pointer to the destination structure to decode to */
-    void *pData;                   /* Pointer where to store current field value */
-    void *pSize;                   /* Pointer where to store the size of current array field */
-} pb_field_iter_t;
-
-/* Initialize the field iterator structure to beginning. */
-void pb_field_iter_begin(pb_field_iter_t *iter, const pb_field_t *fields, void *dest_struct);
+    void *dest_struct;             /* Pointer to start of the structure */
+    void *pData;                   /* Pointer to current field value */
+    void *pSize;                   /* Pointer to count/has field */
+};
+typedef struct pb_field_iter_s pb_field_iter_t;
+
+/* Initialize the field iterator structure to beginning.
+ * Returns false if the message type is empty. */
+bool pb_field_iter_begin(pb_field_iter_t *iter, const pb_field_t *fields, void *dest_struct);
 
 /* Advance the iterator to the next field.
  * Returns false when the iterator wraps back to the first field. */