text: /*
   * Copyright 2018 The Polycube Authors
   *
   * 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.
   */
  #pragma once
  
  #include <memory>
  #include <string>
  
  #include "../Resources/Body/ListKey.h"
  #include "XPathScanner.h"
  
  namespace polycube::polycubed::Rest::Resources::Body {
  class Resource;
  }
  
  namespace polycube::polycubed::Rest::Parser {
  class XPathParserDriver : std::enable_shared_from_this<XPathParserDriver> {
   public:
    XPathParserDriver(const Resources::Body::Resource *caller, ListKeyValues keys,
                      std::string cube_name);
  
    /// enable debug output in the flex scanner
    bool trace_scanning;
  
    /// enable debug output in the bison parser
    bool trace_parsing;
  
    /** Invoke the scanner and parser on an input string.
     * @param input	input string
     * @param sname	stream name for error messages
     * @return		true if successfully parsed
     */
    bool parse_string(const std::string &input);
  
    /** General error handling. This can be modified to output the error
     * e.g. to a dialog box. */
    void error(const std::string &m);
  
    /** Pointer to the current lexer instance, this is used to connect the
     * parser to the scanner. It is used in the yylex macro. */
    std::unique_ptr<XPathScanner> lexer;
  
    const Resources::Body::Resource *current;
    ListKeyValues keys;
    std::string current_cube_name;
  
   private:
    /** Invoke the scanner and parser for a stream.
     * @param in	input stream
     * @return		true if successfully parsed
     */
    bool parse_stream(std::istream &in);
  };
  }  // namespace polycube::polycubed::Rest::Parser
  