common/metermap.h

/*
Copyright 2013-present Barefoot Networks, Inc.
 
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 BACKENDS_COMMON_METERMAP_H_
#define BACKENDS_COMMON_METERMAP_H_
 
#include "ir/ir.h"
 
namespace P4 {
 
// TODO: This file should be in the BMv2 folder, but ProgramStructure still depends on it.
class DirectMeterMap final {
 public:
    struct DirectMeterInfo {
        const IR::Expression *destinationField;
        const IR::P4Table *table;
        unsigned tableSize;
 
        DirectMeterInfo() : destinationField(nullptr), table(nullptr), tableSize(0) {}
    };
 
 private:
    std::map<const IR::IDeclaration *, DirectMeterInfo *> directMeter;
    DirectMeterInfo *createInfo(const IR::IDeclaration *meter);
 
 public:
    DirectMeterInfo *getInfo(const IR::IDeclaration *meter);
    void setDestination(const IR::IDeclaration *meter, const IR::Expression *destination);
    void setTable(const IR::IDeclaration *meter, const IR::P4Table *table);
    void setSize(const IR::IDeclaration *meter, unsigned size);
};
 
}  // namespace P4
 
#endif /* BACKENDS_COMMON_METERMAP_H_ */