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// Copyright 2022 The Tint Authors.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
#ifndef SRC_TINT_IR_FLOW_NODE_H_
#define SRC_TINT_IR_FLOW_NODE_H_
#include "src/tint/castable.h"
#include "src/tint/utils/vector.h"
namespace tint::ir {
/// Base class for flow nodes
class FlowNode : public Castable<FlowNode> {
public:
~FlowNode() override;
/// The list of flow nodes which branch into this node. This list maybe empty for several
/// reasons:
/// - Node is a start node
/// - Node is a merge target outside control flow (if that returns in both branches)
/// - Node is a continue target outside control flow (loop that returns)
utils::Vector<FlowNode*, 2> inbound_branches;
protected:
/// Constructor
FlowNode();
};
} // namespace tint::ir
#endif // SRC_TINT_IR_FLOW_NODE_H_