1 files changed, 30 insertions, 0 deletions
diff --git a/src/bitflags.h b/src/bitflags.h
new file mode 100644
index 0000000..f16b041
--- /dev/null
+++ b/src/bitflags.h
@@ -0,0 +1,30 @@
+#ifndef LSBITFLAGS_H
+#define LSBITFLAGS_H
+
+#include <lua.h>
+#include "compat.h"
+#include <lauxlib.h>
+#include <stdlib.h>
+
+// type used to store the bitflags
+#define LSBF_BITFLAG lua_Integer
+
+// Validates that the given index is a bitflag object and returns its value.
+// If the index is not a bitflag object, a Lua error is raised.
+// The value will be left on the stack.
+LSBF_BITFLAG lsbf_checkbitflags(lua_State *L, int index);
+
+
+// Validates that the given index is a table containing a field 'fieldname'
+// which is a bitflag object and returns its value.
+// If the index is not a table or the field is not a bitflag object, a Lua
+// error is raised. If the bitflag is not present, the default value is returned.
+// The stack remains unchanged.
+LSBF_BITFLAG lsbf_checkbitflagsfield(lua_State *L, int index, const char *fieldname, LSBF_BITFLAG default_value);
+
+
+// Pushes a new bitflag object with the given value onto the stack.
+// Might raise a Lua error if memory allocation fails.
+void lsbf_pushbitflags(lua_State *L, LSBF_BITFLAG value);
+
+#endif