[Scummvm-cvs-logs] SF.net SVN: scummvm: [22665] scummvm/trunk/common
wjpalenstijn at users.sourceforge.net
wjpalenstijn at users.sourceforge.net
Fri May 26 10:19:02 CEST 2006
Revision: 22665
Author: wjpalenstijn
Date: 2006-05-26 10:18:23 -0700 (Fri, 26 May 2006)
ViewCVS: http://svn.sourceforge.net/scummvm/?rev=22665&view=rev
Log Message:
-----------
add functions for reverse iteration of Common::List
Modified Paths:
--------------
scummvm/trunk/common/list.h
scummvm/trunk/test/common/list.h
Modified: scummvm/trunk/common/list.h
===================================================================
--- scummvm/trunk/common/list.h 2006-05-26 16:02:37 UTC (rev 22664)
+++ scummvm/trunk/common/list.h 2006-05-26 17:18:23 UTC (rev 22665)
@@ -174,6 +174,18 @@
return iterator(next);
}
+ iterator reverse_erase(iterator pos) {
+ assert(pos != end());
+
+ NodeBase *next = pos._node->_next;
+ NodeBase *prev = pos._node->_prev;
+ Node<T> *node = static_cast<Node<T> *>(pos._node);
+ prev->_next = next;
+ next->_prev = prev;
+ delete node;
+ return iterator(prev);
+ }
+
iterator erase(iterator first, iterator last) {
while (first != last)
erase(first++);
@@ -229,6 +241,10 @@
return iterator(_anchor->_next);
}
+ iterator reverse_begin() {
+ return iterator(_anchor->_prev);
+ }
+
iterator end() {
return iterator(_anchor);
}
@@ -237,6 +253,10 @@
return const_iterator(_anchor->_next);
}
+ const_iterator reverse_begin() const {
+ return const_iterator(_anchor->_prev);
+ }
+
const_iterator end() const {
return const_iterator(_anchor);
}
Modified: scummvm/trunk/test/common/list.h
===================================================================
--- scummvm/trunk/test/common/list.h 2006-05-26 16:02:37 UTC (rev 22664)
+++ scummvm/trunk/test/common/list.h 2006-05-26 17:18:23 UTC (rev 22665)
@@ -103,4 +103,47 @@
++iter;
TS_ASSERT( iter == container.end() );
}
+
+ void test_reverse( void )
+ {
+ Common::List<int> container;
+ Common::List<int>::iterator iter;
+
+ // Fill the container with some random data
+ container.push_back(17);
+ container.push_back(33);
+ container.push_back(-11);
+
+ iter = container.reverse_begin();
+ TS_ASSERT( iter != container.end() );
+
+
+ TS_ASSERT( *iter == -11 );
+ --iter;
+ TS_ASSERT( iter != container.end() );
+
+ TS_ASSERT( *iter == 33 );
+ --iter;
+ TS_ASSERT( iter != container.end() );
+
+ TS_ASSERT( *iter == 17 );
+ --iter;
+ TS_ASSERT( iter == container.end() );
+
+ iter = container.reverse_begin();
+
+ iter = container.reverse_erase(iter);
+ TS_ASSERT( iter != container.end() );
+ TS_ASSERT( *iter == 33 );
+
+ iter = container.reverse_erase(iter);
+ TS_ASSERT( iter != container.end() );
+ TS_ASSERT( *iter == 17 );
+
+ iter = container.reverse_erase(iter);
+ TS_ASSERT( iter == container.end() );
+
+ TS_ASSERT( container.begin() == container.end() );
+ TS_ASSERT( container.reverse_begin() == container.end() );
+ }
};
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