Initial import of svn+ssh:://svn.icir.org/bro/trunk/bro as of r7088

src/Attr.h

@@ -0,0 +1,92 @@
+// $Id: Attr.h 6219 2008-10-01 05:39:07Z vern $
+//
+// See the file "COPYING" in the main distribution directory for copyright.
+
+#ifndef attr_h
+#define attr_h
+
+#include "Obj.h"
+
+class Expr;
+
+// Note that there are two kinds of attributes: the kind (here) which
+// modify expressions or supply metadata on types, and the kind that
+// are extra metadata on every variable instance.
+
+typedef enum {
+	ATTR_OPTIONAL,
+	ATTR_DEFAULT,
+	ATTR_REDEF,
+	ATTR_ROTATE_INTERVAL,
+	ATTR_ROTATE_SIZE,
+	ATTR_ADD_FUNC,
+	ATTR_DEL_FUNC,
+	ATTR_EXPIRE_FUNC,
+	ATTR_EXPIRE_READ,
+	ATTR_EXPIRE_WRITE,
+	ATTR_EXPIRE_CREATE,
+	ATTR_PERSISTENT,
+	ATTR_SYNCHRONIZED,
+	ATTR_POSTPROCESSOR,
+	ATTR_ENCRYPT,
+	ATTR_MATCH,
+	ATTR_DISABLE_PRINT_HOOK,
+	ATTR_RAW_OUTPUT,
+	ATTR_MERGEABLE,
+	ATTR_PRIORITY,
+	ATTR_GROUP,
+	ATTR_TRACKED,	// hidden attribute, tracked by NotifierRegistry
+#define NUM_ATTRS (int(ATTR_TRACKED) + 1)
+} attr_tag;
+
+class Attr : public BroObj {
+public:
+	Attr(attr_tag t, Expr* e = 0);
+	~Attr();
+
+	attr_tag Tag() const	{ return tag; }
+	Expr* AttrExpr() const	{ return expr; }
+
+	int RedundantAttrOkay() const
+		{ return tag == ATTR_REDEF || tag == ATTR_OPTIONAL; }
+
+	void Describe(ODesc* d) const;
+
+protected:
+	void AddTag(ODesc* d) const;
+
+	attr_tag tag;
+	Expr* expr;
+};
+
+// Manages a collection of attributes.
+class Attributes : public BroObj {
+public:
+	Attributes(attr_list* a, BroType* t);
+	~Attributes();
+
+	void AddAttr(Attr* a);
+	void AddAttrs(Attributes* a);	// Unref's 'a' when done
+
+	Attr* FindAttr(attr_tag t) const;
+
+	void RemoveAttr(attr_tag t);
+
+	void Describe(ODesc* d) const;
+
+	attr_list* Attrs()	{ return attrs; }
+
+	bool Serialize(SerialInfo* info) const;
+	static Attributes* Unserialize(UnserialInfo* info);
+
+protected:
+	Attributes()	{ type = 0; attrs = 0; }
+	void CheckAttr(Attr* attr);
+
+	DECLARE_SERIAL(Attributes);
+
+	BroType* type;
+	attr_list* attrs;
+};
+
+#endif