added vmop class (stage for expression execution)

1 files changed, 50 insertions, 0 deletions

diff --git a/vmop.h b/vmop.h
new file mode 100644
index 00000000..319232a0
--- /dev/null
+++ b/vmop.h
@@ -0,0 +1,50 @@
+/* The vmop object.
+ *
+ * Copyright 2008 Rainer Gerhards and Adiscon GmbH.
+ *
+ * This file is part of rsyslog.
+ *
+ * Rsyslog 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, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * Rsyslog 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 Rsyslog.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ * A copy of the GPL can be found in the file "COPYING" in this distribution.
+ */
+#ifndef INCLUDED_VMOP_H
+#define INCLUDED_VMOP_H
+
+/* machine instructions types */
+typedef enum {	 /* do NOT start at 0 to detect uninitialized types after calloc() */
+	opcode_INVALID = 0,
+	opcode_PUSH = 1
+} opcode_t;
+
+/* the vmop object */
+typedef struct vmop_s {
+	BEGINobjInstance;	/* Data to implement generic object - MUST be the first data element! */
+	opcode_t opcode;
+	union {
+		var_t *pVar;
+		/* TODO: add function pointer */
+	} operand;
+} vmop_t;
+
+
+/* prototypes */
+rsRetVal vmopConstruct(vmop_t **ppThis);
+rsRetVal vmopConstructFinalize(vmop_t __attribute__((unused)) *pThis);
+rsRetVal vmopDestruct(vmop_t **ppThis);
+rsRetVal vmopSetOpcode(vmop_t *pThis, opcode_t opcode);
+rsRetVal vmopSetVar(vmop_t *pThis, var_t *pVar);
+PROTOTYPEObjClassInit(vmop);
+
+#endif /* #ifndef INCLUDED_VMOP_H */