cpp-json/json_common.hpp

//
//  json_common.h
//  json
//
//  Created by Sam Jaffe on 4/22/16.
//

#pragma once

#include "../variant/variant.hpp"

#include <cstdlib>
#include <iostream>
#include <map>
#include <stdexcept>
#include <string>
#include <vector>

namespace json {
  
  using string_jt = std::string;
  using double_jt = double;
  using int_jt = int32_t;
  using uint_jt = uint32_t;
  using bool_jt = bool;
  
  using numeric_jt = variant<int_jt, uint_jt, double_jt>;
  
  class value;

  class malformed_json_exception :
  public std::domain_error {
    using std::domain_error::domain_error;
  };
}

namespace json {
  namespace helper {
    const char get_next_element(char const*& data);
    
    /**
     * @throws json::malformed_json_exception
     */
    void advance_to_boundary(char const endtok, char const *& data);
    
    /**
     * @throws json::malformed_json_exception
     */
    std::string parse_string(char const * & data);
        
    template <typename T>
    void parse_string(T& json, char const * & data) {
      json = parse_string(data);
    }
    
    template <typename T>
    void parse_double(T& json, char const * & data) {
      json = atof(data);
    }
    
    template <typename T>
    void parse_integer(T& json, char const * & data) {
      json = atoi(data);
    }
    
  }
  
  namespace parser {
    template <typename T>
    void parse(T& json, std::string const& str) {
      parse(json, str.c_str());
    }
    
    template <typename T>
    void parse(T& json, std::istream & in) {
      in.seekg(0, std::ios_base::end);
      size_t end = in.tellg();
      char data[end];
      in.seekg(0);
      in.read(data, end);
      parse(json, data);
    }
  }
}