text: /**
   * Copyright (c) 2016 Xavier R. Guerin
   *
   * Permission is hereby granted, free of charge, to any person obtaining a copy
   * of this software and associated documentation files (the "Software"), to deal
   * in the Software without restriction, including without limitation the rights
   * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
   * copies of the Software, and to permit persons to whom the Software is
   * furnished to do so, subject to the following conditions:
   *
   * The above copyright notice and this permission notice shall be included in
   * all copies or substantial portions of the Software.
   *
   * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
   * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
   * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
   * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
   * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
   * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
   * SOFTWARE.
   */
  
  #pragma once
  
  #include "Value.h"
  #include <map>
  #include <sstream>
  #include <string>
  #include <utility>
  #include <vector>
  
  namespace ace { namespace tree {
  
  class Checker
  {
  public:
    class Pattern
    {
    public:
      Pattern();
      Pattern(const Value::Type t, const bool o);
      Pattern(std::vector<Value::Type> const& t, const bool o);
  
      std::vector<Value::Type> const& types() const;
      bool optional() const;
  
    private:
      std::vector<Value::Type> m_types;
      bool m_opt;
    };
  
    using Schema = std::map<std::string, Pattern>;
  
  public:
    Checker() = delete;
    Checker(std::string const& hdr, Value const& t);
  
    bool validate(Schema const& schm) const;
  
  private:
    const std::string m_hdr;
    Value const& m_token;
  };
  
  }}
  