1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/content/xul/templates/src/nsRDFTestNode.h Wed Dec 31 06:09:35 2014 +0100
1.3 @@ -0,0 +1,49 @@
1.4 +/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
1.5 +/* This Source Code Form is subject to the terms of the Mozilla Public
1.6 + * License, v. 2.0. If a copy of the MPL was not distributed with this
1.7 + * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
1.8 +
1.9 +#ifndef nsRDFTestNode_h__
1.10 +#define nsRDFTestNode_h__
1.11 +
1.12 +#include "nsRuleNetwork.h"
1.13 +
1.14 +class nsIRDFResource;
1.15 +class nsIRDFNode;
1.16 +
1.17 +/**
1.18 + * An abstract base class for all of the RDF-related tests. This interface
1.19 + * allows us to iterate over all of the RDF tests to find the one in the
1.20 + * network that is apropos for a newly-added assertion.
1.21 + */
1.22 +class nsRDFTestNode : public TestNode
1.23 +{
1.24 +public:
1.25 + nsRDFTestNode(TestNode* aParent)
1.26 + : TestNode(aParent) {}
1.27 +
1.28 + /**
1.29 + * Determine whether the node can propagate an assertion
1.30 + * with the specified source, property, and target. If the
1.31 + * assertion can be propagated, aInitialBindings will be
1.32 + * initialized with appropriate variable-to-value assignments
1.33 + * to allow the rule network to start a constrain and propagate
1.34 + * search from this node in the network.
1.35 + *
1.36 + * @return true if the node can propagate the specified
1.37 + * assertion.
1.38 + */
1.39 + virtual bool CanPropagate(nsIRDFResource* aSource,
1.40 + nsIRDFResource* aProperty,
1.41 + nsIRDFNode* aTarget,
1.42 + Instantiation& aInitialBindings) const = 0;
1.43 +
1.44 + /**
1.45 + *
1.46 + */
1.47 + virtual void Retract(nsIRDFResource* aSource,
1.48 + nsIRDFResource* aProperty,
1.49 + nsIRDFNode* aTarget) const = 0;
1.50 +};
1.51 +
1.52 +#endif // nsRDFTestNode_h__
