Changeset 5243 in orxonox.OLD for trunk/src/lib/util/list.h

Timestamp:

Sep 24, 2005, 7:43:08 PM (19 years ago)

Author:

bensch

Message:

orxonox/trunk: now it is possible to get old commands from the List

File:

• trunk/src/lib/util/list.h (modified) (2 diffs)

trunk/src/lib/util/list.h

@@ -348 +348 @@
     T* seekElement(const T* element);
     T* iteratorElement(const tIterator<T>* iterator);
+
+    /** another way to iterate through the list
+     * !! THIS IS NOT MEANT FOR DELETION
+     */
+    T* prevStep();
+    T* nextStep();
+    T* getCurrent();
 
   private:
@@ -514 +521 @@
 
 
+/**
+ *  use it to move through the list without interfering with the iteration
+ */
+template<class T>
+    inline T* tIterator<T>::nextStep ()
+{
+  if( unlikely(this->tmpEl == NULL || this->tmpEl->next == NULL))
+    return NULL;
+  else
+  {
+    this->tmpEl = this->tmpEl->next;
+    return tmpEl->curr;
+  }
+}
+
+
+/**
+ *  use it to move backwards through the list without interfering with the itereation
+ * @returns next list element
+ */
+template<class T>
+    inline T* tIterator<T>::prevStep ()
+{
+  if( unlikely(this->tmpEl == NULL || this->tmpEl->prev == NULL))
+    return NULL;
+  else
+  {
+    this->tmpEl = this->tmpEl->prev;
+    return tmpEl->curr;
+  }
+}
+
+template<class T>
+    inline T* tIterator<T>::getCurrent()
+{
+  if (likeley(this->tmpEl))
+    return this->tmpEl->curr;
+  else
+    return NULL;
+}
+
 #endif /* _LIST_H */