flattenHeader.h

/*
Copyright 2019-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 CONTROL_PLANE_FLATTENHEADER_H_
#define CONTROL_PLANE_FLATTENHEADER_H_
 
#include <vector>
 
#include "ir/ir.h"
 
namespace P4 {
 
class TypeMap;
 
namespace ControlPlaneAPI {
 
class FlattenHeader {
 private:
    P4::TypeMap *typeMap;
    IR::Type_Header *flattenedHeader;
    std::vector<cstring> nameSegments;
    std::vector<const IR::Vector<IR::Annotation> *> allAnnotations;
    bool needsFlattening{false};
 
    FlattenHeader(P4::TypeMap *typeMap, IR::Type_Header *flattenedHeader);
 
    void doFlatten(const IR::Type *type);
 
    cstring makeName(std::string_view sep) const;
    IR::Vector<IR::Annotation> mergeAnnotations() const;
 
 public:
    static const IR::Type_Header *flatten(P4::TypeMap *typeMap, const IR::Type_Header *headerType);
};
 
}  // namespace ControlPlaneAPI
 
}  // namespace P4
 
#endif  // CONTROL_PLANE_FLATTENHEADER_H_