Visitor.h

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/*
 * Copyright (c) 2018 Samsung Electronics Co., Ltd. All Rights Reserved
 *
 * 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 _MIR_VISITOR_H_
#define _MIR_VISITOR_H_
 
namespace mir
{
 
// Forward declare operations as we don't need anything but references
namespace ops
{
#define HANDLE_OP(OpType, OpClass) class OpClass;
#include "mir/Operations.inc"
#undef HANDLE_OP
} // namespace ops
 
class Operation;
 
class IVisitor
{
public:
#define HANDLE_OP(OpType, OpClass) virtual void visit(ops::OpClass &) = 0;
#include "Operations.inc"
#undef HANDLE_OP
 
  virtual ~IVisitor() = default;
};
 
class Visitor : public IVisitor
{
public:
#define HANDLE_OP(OpType, OpClass) void visit(ops::OpClass &) override;
#include "Operations.inc"
#undef HANDLE_OP
 
protected:
  virtual void visit_fallback(Operation &) {}
};
 
} // namespace mir
 
#endif //_MIR_VISITOR_H_