Issue #236: Add -Wcast-qual and fix casts to retain constness.

To better distinguish between entry->k and entry->v being const within linkhash, but non-const outside, add lh_entry_v() and lh_entry_k() accessors.
Make lh_entry->k const.

1 files changed, 3 insertions, 3 deletions

diff --git a/json_object_iterator.c b/json_object_iterator.c
index 7066649..7c2a25b 100644
--- a/json_object_iterator.c
+++ b/json_object_iterator.c
@@ -105,7 +105,7 @@ json_object_iter_next(struct json_object_iterator* iter)
     JASSERT(NULL != iter);
     JASSERT(kObjectEndIterValue != iter->opaque_);
 
-    iter->opaque_ = ((struct lh_entry *)iter->opaque_)->next;
+    iter->opaque_ = ((const struct lh_entry *)iter->opaque_)->next;
 }
 
 
@@ -118,7 +118,7 @@ json_object_iter_peek_name(const struct json_object_iterator* iter)
     JASSERT(NULL != iter);
     JASSERT(kObjectEndIterValue != iter->opaque_);
 
-    return (const char*)(((struct lh_entry *)iter->opaque_)->k);
+    return (const char*)(((const struct lh_entry *)iter->opaque_)->k);
 }
 
 
@@ -131,7 +131,7 @@ json_object_iter_peek_value(const struct json_object_iterator* iter)
     JASSERT(NULL != iter);
     JASSERT(kObjectEndIterValue != iter->opaque_);
 
-    return (struct json_object*)(((struct lh_entry *)iter->opaque_)->v);
+    return (struct json_object*)lh_entry_v((const struct lh_entry *)iter->opaque_);
 }