resetHeaders.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 FRONTENDS_P4_RESETHEADERS_H_
#define FRONTENDS_P4_RESETHEADERS_H_
 
#include "frontends/common/resolveReferences/resolveReferences.h"
#include "frontends/p4/typeChecking/typeChecker.h"
#include "ir/ir.h"
 
namespace P4 {
 
class DoResetHeaders : public Transform {
    const TypeMap *typeMap;
    IR::IndexedVector<IR::StatOrDecl> insert;
 
 public:
    static void generateResets(const TypeMap *typeMap, const IR::Type *type,
                               const IR::Expression *expr, IR::Vector<IR::StatOrDecl> *resets);
    explicit DoResetHeaders(const TypeMap *typeMap) : typeMap(typeMap) {
        CHECK_NULL(typeMap);
        setName("DoResetHeaders");
    }
    const IR::Node *postorder(IR::Declaration_Variable *decl) override;
    const IR::Node *postorder(IR::P4Control *control) override;
    const IR::Node *postorder(IR::ParserState *state) override;
};
 
class ResetHeaders : public PassManager {
 public:
    explicit ResetHeaders(TypeMap *typeMap) {
        passes.push_back(new P4::TypeChecking(nullptr, typeMap));
        passes.push_back(new P4::DoResetHeaders(typeMap));
        setName("ResetHeaders");
    }
};
 
}  // namespace P4
 
#endif /* FRONTENDS_P4_RESETHEADERS_H_ */