plugins/header_rewrite/parser.h

/*
  Licensed to the Apache Software Foundation (ASF) under one
  or more contributor license agreements.  See the NOTICE file
  distributed with this work for additional information
  regarding copyright ownership.  The ASF licenses this file
  to you 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.
*/
//////////////////////////////////////////////////////////////////////////////////////////////
//
// Interface for the config line parser
//
#ifndef __PARSER_H__
#define __PARSER_H__ 1

#include <string>
#include <vector>
#include <algorithm>

#include "lulu.h"


///////////////////////////////////////////////////////////////////////////////
//
class Parser
{
public:
  explicit Parser(const std::string& line);

  bool empty() const { return _empty; }
  bool is_cond() const { return _cond; }

  bool cond_op_is(const std::string s) const { return _cond && (_op == s); }
  bool oper_op_is(const std::string s) const { return !_cond && (_op == s); }

  const std::string& get_op() const { return _op; }
  std::string& get_arg() { return _arg; }
  const std::string& get_value() const { return _val; }

  bool mod_exist(const std::string m) const {
    return (std::find(_mods.begin(), _mods.end(), m) != _mods.end());
  }

private:
  void preprocess(std::vector<std::string>& tokens);
  DISALLOW_COPY_AND_ASSIGN(Parser);

  bool _cond;
  bool _empty;
  std::vector<std::string> _mods;
  std::string _op;
  std::string _arg;
  std::string _val;
};


#endif // __PARSER_H