typeUnification.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 TYPECHECKING_TYPEUNIFICATION_H_
#define TYPECHECKING_TYPEUNIFICATION_H_
 
#include "frontends/p4/typeMap.h"
#include "ir/ir.h"
 
namespace P4 {
 
class TypeConstraints;
class BinaryConstraint;
 
class TypeUnification final {
    TypeConstraints *constraints;
    const TypeMap *typeMap;
 
    static bool containsDots(const IR::Type_StructLike *type);
    static bool containsDots(const IR::Type_BaseList *type);
    bool unifyCall(const BinaryConstraint *constraint);
    bool unifyFunctions(const BinaryConstraint *constraint, bool skipReturnValues = false);
    bool unifyBlocks(const BinaryConstraint *constraint);
 
 public:
    TypeUnification(TypeConstraints *constraints, const P4::TypeMap *typeMap)
        : constraints(constraints), typeMap(typeMap) {}
    bool unify(const BinaryConstraint *constraint);
};
 
}  // namespace P4
 
#endif /* TYPECHECKING_TYPEUNIFICATION_H_ */