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+/* The vmstk object.
+ *
+ * Copyright 2008 Rainer Gerhards and Adiscon GmbH.
+ *
+ * This file is part of the rsyslog runtime library.
+ *
+ * The rsyslog runtime library is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Lesser General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * The rsyslog runtime library 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 Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with the rsyslog runtime library. If not, see <http://www.gnu.org/licenses/>.
+ *
+ * A copy of the GPL can be found in the file "COPYING" in this distribution.
+ * A copy of the LGPL can be found in the file "COPYING.LESSER" in this distribution.
+ */
+#ifndef INCLUDED_VMSTK_H
+#define INCLUDED_VMSTK_H
+
+/* The max size of the stack - TODO: make configurable */
+#define VMSTK_SIZE 256
+
+/* the vmstk object */
+typedef struct vmstk_s {
+ BEGINobjInstance; /* Data to implement generic object - MUST be the first data element! */
+ var_t *vStk[VMSTK_SIZE];/* the actual stack */
+ int iStkPtr; /* stack pointer, points to next free location, grows from 0 --> topend */
+} vmstk_t;
+
+
+/* interfaces */
+BEGINinterface(vmstk) /* name must also be changed in ENDinterface macro! */
+ INTERFACEObjDebugPrint(vmstk);
+ rsRetVal (*Construct)(vmstk_t **ppThis);
+ rsRetVal (*ConstructFinalize)(vmstk_t __attribute__((unused)) *pThis);
+ rsRetVal (*Destruct)(vmstk_t **ppThis);
+ rsRetVal (*Push)(vmstk_t *pThis, var_t *pVar);
+ rsRetVal (*Pop)(vmstk_t *pThis, var_t **ppVar);
+ rsRetVal (*PopBool)(vmstk_t *pThis, var_t **ppVar);
+ rsRetVal (*PopNumber)(vmstk_t *pThis, var_t **ppVar);
+ rsRetVal (*PopString)(vmstk_t *pThis, var_t **ppVar);
+ rsRetVal (*Pop2CommOp)(vmstk_t *pThis, var_t **ppVar1, var_t **ppVar2);
+ENDinterface(vmstk)
+#define vmstkCURR_IF_VERSION 1 /* increment whenever you change the interface structure! */
+
+
+/* prototypes */
+PROTOTYPEObj(vmstk);
+
+#endif /* #ifndef INCLUDED_VMSTK_H */