constantParsing.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_COMMON_CONSTANTPARSING_H_
#define FRONTENDS_COMMON_CONSTANTPARSING_H_
 
#include "lib/cstring.h"
 
namespace P4::IR {
class Constant;
}  // namespace P4::IR
 
namespace P4::Util {
class SourceInfo;
}  // namespace P4::Util
 
namespace P4 {
 
class JSONGenerator;
class JSONLoader;

struct UnparsedConstant {
    cstring text;   
    unsigned skip;  
    unsigned base;  
    bool hasWidth;  
    void toJSON(JSONGenerator &) const;
    static UnparsedConstant fromJSON(JSONLoader &);
};
 
std::ostream &operator<<(std::ostream &out, const UnparsedConstant &constant);
 
bool operator<(const UnparsedConstant &a, const UnparsedConstant &b);

IR::Constant *parseConstant(const Util::SourceInfo &srcInfo, const UnparsedConstant &constant,
                            long defaultValue);

int parseConstantChecked(const Util::SourceInfo &srcInfo, const UnparsedConstant &constant);
 
}  // namespace P4
 
#endif /* FRONTENDS_COMMON_CONSTANTPARSING_H_ */