created initial vmprg class

1 files changed, 101 insertions, 0 deletions

diff --git a/vmprg.c b/vmprg.c
new file mode 100644
index 00000000..44b403f8
--- /dev/null
+++ b/vmprg.c
@@ -0,0 +1,101 @@
+/* vmprg.c - abstracts a program (bytecode) for the rsyslog virtual machine
+ *
+ * Module begun 2008-02-20 by Rainer Gerhards
+ *
+ * Copyright 2007, 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.
+ */
+
+#include "config.h"
+#include <stdlib.h>
+#include <assert.h>
+
+#include "rsyslog.h"
+#include "obj.h"
+#include "vmprg.h"
+
+/* static data */
+DEFobjStaticHelpers
+
+
+/* Standard-Constructor
+ */
+BEGINobjConstruct(vmprg) /* be sure to specify the object type also in END macro! */
+ENDobjConstruct(vmprg)
+
+
+/* ConstructionFinalizer
+ * rgerhards, 2008-01-09
+ */
+rsRetVal vmprgConstructFinalize(vmprg_t *pThis)
+{
+	DEFiRet;
+	ISOBJ_TYPE_assert(pThis, vmprg);
+	RETiRet;
+}
+
+
+/* destructor for the vmprg object */
+BEGINobjDestruct(vmprg) /* be sure to specify the object type also in END and CODESTART macros! */
+	vmop_t *pOp;
+	vmop_t *pTmp;
+CODESTARTobjDestruct(vmprg)
+	/* we need to destruct the program elements! */
+	for(pOp = pThis->vmopRoot ; pOp != NULL ; ) {
+		pTmp = pOp;
+		pOp = pOp->pNext;
+		vmopDestruct(&pTmp);
+	}
+ENDobjDestruct(vmprg)
+
+
+/* add an operation (instruction) to the end of the current program. This
+ * function is expected to be called while creating the program, but never
+ * again after this is done and it is being executed. Results are undefined if
+ * it is called after execution.
+ */
+rsRetVal
+addOperation(vmprg_t *pThis, vmop_t *pOp)
+{
+	DEFiRet;
+
+	ISOBJ_TYPE_assert(pThis, vmprg);
+	ISOBJ_TYPE_assert(pOp, vmop);
+
+	if(pThis->vmopRoot == NULL) {
+		pThis->vmopRoot = pOp;
+	} else {
+		pThis->vmopLast->pNext = pOp;
+	}
+	pThis->vmopLast = pOp;
+
+	RETiRet;
+}
+
+
+/* Initialize the vmprg class. Must be called as the very first method
+ * before anything else is called inside this class.
+ * rgerhards, 2008-02-19
+ */
+BEGINObjClassInit(vmprg, 1) /* class, version */
+	OBJSetMethodHandler(objMethod_CONSTRUCTION_FINALIZER, vmprgConstructFinalize);
+ENDObjClassInit(vmprg)
+
+/* vi:set ai:
+ */