proper way of doing list move
git-svn-id: https://asn1c.svn.sourceforge.net/svnroot/asn1c/trunk@211 59561ff5-6e30-0410-9f3c-9617f08c8826
diff --git a/libasn1parser/asn1p_list.h b/libasn1parser/asn1p_list.h
index 1f80878..4a71fdd 100644
--- a/libasn1parser/asn1p_list.h
+++ b/libasn1parser/asn1p_list.h
@@ -4,19 +4,25 @@
#ifndef ASN1_PARSER_LIST_H
#define ASN1_PARSER_LIST_H
-#define TQ_HEAD(type) \
- struct { \
- type *tq_head; \
- type**tq_tail; \
+#define TQ_HEAD(type) \
+ struct { \
+ type *tq_head; \
+ type**tq_tail; \
}
-#define TQ_HEAD_COPY(to, from) \
- do { (to)->tq_head = (from)->tq_head; \
- (to)->tq_tail = (from)->tq_tail; } while(0)
+#define TQ_MOVE(to, from) do { \
+ if(&(TQ_FIRST(from)) == (from)->tq_tail) { \
+ TQ_INIT(to); \
+ } else { \
+ (to)->tq_head = (from)->tq_head; \
+ (to)->tq_tail = (from)->tq_tail; \
+ } \
+ TQ_INIT(from); \
+ } while(0)
-#define TQ_ENTRY(type) \
- struct { \
- type *tq_next; \
+#define TQ_ENTRY(type) \
+ struct { \
+ type *tq_next; \
}
#define TQ_FIRST(headp) ((headp)->tq_head)