Add module zero.c/zero.h

1 files changed, 34 insertions, 0 deletions

diff --git a/zero.h b/zero.h
new file mode 100644
index 0000000..45d2771
--- /dev/null
+++ b/zero.h
@@ -0,0 +1,34 @@
+/*
+ * This file is part of ltrace.
+ * Copyright (C) 2011,2012 Petr Machata, Red Hat Inc.
+ *
+ * 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; either version 2 of the
+ * License, or (at your option) any later version.
+ *
+ * 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, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
+ * 02110-1301 USA
+ */
+
+#ifndef ZERO_H
+#define ZERO_H
+
+#include "forward.h"
+
+/* This returns a pre-built "zero" node without argument.  Share, but
+   don't free.  */
+struct expr_node *expr_node_zero(void);
+
+/* This builds a new "zero" node with EXPR as argument.  EXPR is owned
+ * by the built node if OWN.  Returns NULL if something failed.  */
+struct expr_node *build_zero_w_arg(struct expr_node *expr, int own);
+
+#endif /* ZERO_H */