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-rw-r--r--src/VBox/Runtime/common/table/avl_Get.cpp.h77
1 files changed, 77 insertions, 0 deletions
diff --git a/src/VBox/Runtime/common/table/avl_Get.cpp.h b/src/VBox/Runtime/common/table/avl_Get.cpp.h
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+++ b/src/VBox/Runtime/common/table/avl_Get.cpp.h
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+/* $Id: avl_Get.cpp.h $ */
+/** @file
+ * kAVLGet - get routine for AVL trees.
+ */
+
+/*
+ * Copyright (C) 2006-2023 Oracle and/or its affiliates.
+ *
+ * This file is part of VirtualBox base platform packages, as
+ * available from https://www.virtualbox.org.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation, in version 3 of the
+ * License.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, see <https://www.gnu.org/licenses>.
+ *
+ * The contents of this file may alternatively be used under the terms
+ * of the Common Development and Distribution License Version 1.0
+ * (CDDL), a copy of it is provided in the "COPYING.CDDL" file included
+ * in the VirtualBox distribution, in which case the provisions of the
+ * CDDL are applicable instead of those of the GPL.
+ *
+ * You may elect to license modified versions of this file under the
+ * terms and conditions of either the GPL or the CDDL or both.
+ *
+ * SPDX-License-Identifier: GPL-3.0-only OR CDDL-1.0
+ */
+
+#ifndef _kAVLGet_h_
+#define _kAVLGet_h_
+
+
+/**
+ * Gets a node from the tree (does not remove it!)
+ * @returns Pointer to the node holding the given key.
+ * @param ppTree Pointer to the AVL-tree root node pointer.
+ * @param Key Key value of the node which is to be found.
+ * @author knut st. osmundsen
+ */
+KAVL_DECL(PKAVLNODECORE) KAVL_FN(Get)(PPKAVLNODECORE ppTree, KAVLKEY Key)
+{
+ PKAVLNODECORE pNode = KAVL_GET_POINTER_NULL(ppTree);
+
+ if (pNode)
+ {
+ while (KAVL_NE(pNode->Key, Key))
+ {
+ if (KAVL_G(pNode->Key, Key))
+ {
+ if (pNode->pLeft != KAVL_NULL)
+ pNode = KAVL_GET_POINTER(&pNode->pLeft);
+ else
+ return NULL;
+ }
+ else
+ {
+ if (pNode->pRight != KAVL_NULL)
+ pNode = KAVL_GET_POINTER(&pNode->pRight);
+ else
+ return NULL;
+ }
+ }
+ }
+
+ return pNode;
+}
+
+
+#endif