Line data    Source code

       1             : /**
       2             :  * Copyright Soramitsu Co., Ltd. 2017 All Rights Reserved.
       3             :  * http://soramitsu.co.jp
       4             :  *
       5             :  * Licensed under the Apache License, Version 2.0 (the "License");
       6             :  * you may not use this file except in compliance with the License.
       7             :  * You may obtain a copy of the License at
       8             :  *
       9             :  *        http://www.apache.org/licenses/LICENSE-2.0
      10             :  *
      11             :  * Unless required by applicable law or agreed to in writing, software
      12             :  * distributed under the License is distributed on an "AS IS" BASIS,
      13             :  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
      14             :  * See the License for the specific language governing permissions and
      15             :  * limitations under the License.
      16             :  */
      17             : 
      18             : #include <algorithm>
      19             : #include <iterator>
      20             : #include <boost/optional.hpp>
      21             : #include <sstream>
      22             : #include <string>
      23             : #include <vector>
      24             : 
      25             : #ifndef IROHA_PARSER_HPP
      26             : #define IROHA_PARSER_HPP
      27             : 
      28             : namespace parser {
      29             : 
      30             :   /**
      31             :    * Check if string is actually the integer number
      32             :    * @param s
      33             :    * @return
      34             :    */
      35             :   bool isIntNumber(const std::string &s);
      36             : 
      37             :   /**
      38             :    * Parse the first command in the line
      39             :    * @param line string to parse
      40             :    * @return nullopt if no command found, string otherwise
      41             :    */
      42             :   boost::optional<std::string> parseFirstCommand(std::string line);
      43             : 
      44             :   /**
      45             :    * Split line into words
      46             :    * @param line
      47             :    * @return vector with words
      48             :    */
      49             :   std::vector<std::string> split(std::string line);
      50             : 
      51             :   template <typename T>
      52             :   boost::optional<T> parseValue(std::string word) {
      53           0 :     std::stringstream ss(word);
      54           0 :     if (not isIntNumber(word)) {
      55           0 :       return boost::none;
      56             :     }
      57             :     T val;
      58           0 :     if (ss >> val) {
      59           0 :       return val;
      60             :     } else {
      61           0 :       return boost::none;
      62             :     }
      63           0 :   }
      64             : 
      65             : }  // namespace parser
      66             : 
      67             : #endif  // IROHA_PARSER_HPP