Changeset 5118 in orxonox.OLD for trunk/src/lib/util/list.h

Timestamp:

Aug 24, 2005, 2:45:46 AM (19 years ago)

Author:

bensch

Message:

orxonox/trunk: semi-active buffers

File:

• trunk/src/lib/util/list.h (modified) (4 diffs)

trunk/src/lib/util/list.h

@@ -333 +333 @@
 
     T* firstElement();
+    T* lastElement();
     T* nextElement();
+    T* prevElement();
     T* seekElement(T* element);
     T* iteratorElement(const tIterator<T>* iterator);
@@ -375 +377 @@
     inline tIterator<T>::~tIterator ()
 {
-  this->currentEl = NULL;
 }
 
@@ -382 +383 @@
 {
   this->currentEl = this->list->first;
-  if (this->currentEl == NULL)
-    return NULL;
-  else
+  if (this->currentEl != NULL)
     return this->currentEl->curr;
+  else
+    return NULL;
+}
+
+template<class T>
+    inline T* tIterator<T>::lastElement ()
+{
+  this->currentEl = this->list->last;
+  if (this->currentEl != NULL)
+    return this->currentEl->curr;
+  else
+    return NULL;
 }
 
@@ -405 +416 @@
     return NULL;
 }
+
+/**
+ *  use it to iterate backwards through the list
+ * @returns next list element
+ */
+template<class T>
+    inline T* tIterator<T>::prevElement ()
+{
+  if( this->currentEl == NULL)
+    return NULL;
+
+  this->currentEl = this->currentEl->prev;
+  if (this->currentEl != NULL)
+    return this->currentEl->curr;
+  else
+    return NULL;
+}
+
 
 /**