diff -r a10ba529ae39 -r 7728d6ec3abf src/lib/object.h
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/lib/object.h	Wed May 27 23:57:48 2009 +0300
@@ -0,0 +1,56 @@
+#ifndef OBJECT_H
+#define OBJECT_H
+
+/**
+ * @file
+ *
+ * The thing feared by every C-programmer - calling C structs "objects".
+ */
+#include <stdbool.h>
+
+/**
+ * Basic object type info
+ */
+struct object_type {
+    /** Parent type for nested structs, NULL if the parent is object_type */
+    const struct object_type *parent;
+};
+
+/**
+ * Basic object state
+ */
+struct object {
+    /** Object's type */
+    const struct object_type *type;
+};
+
+/**
+ * Initialize an object to the given type.
+ */
+void object_init (struct object *obj, const struct object_type *type);
+
+/**
+ * Check that the given object type is compatible with the given type.
+ */
+bool object_type_check (const struct object_type *obj_type, const struct object_type *type);
+
+/**
+ * Check that the given object "implements" the given type.
+ */
+bool object_check (struct object *obj, const struct object_type *type);
+
+/**
+ * Return the given object as a pointer suitable for casting to the struct for the given type.
+ *
+ * It is a bug to call this with an object that's not compatible with the given type.
+ */
+void* object_cast (struct object *obj, const struct object_type *type);
+
+/**
+ * Return a pointer to the object's type that is compatible with the given type.
+ *
+ * It is a bug to call this with a object that's not compatible with the given type.
+ */
+const void* object_type (struct object *obj, const struct object_type *type);
+
+#endif /* OBJECT_H */