json_goto_functions.cpp

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/*******************************************************************\
 
Module: JSON goto_functions deserialization
 
Author: Michael Tautschnig
 
\*******************************************************************/
 
 
#include "json_goto_functions.h"
 
#include <util/exception_utils.h>
#include <util/json.h>
 
#include <goto-programs/goto_functions.h>
 
#include "json_goto_function.h"
 
void goto_functions_from_json(
  const jsont &json,
  goto_functionst &goto_functions)
{
  if(!json.is_object())
  {
    throw deserialization_exceptiont{
      "goto_functions_from_json: JSON input must be an object"};
  }
 
  const json_objectt &json_object = to_json_object(json);
  const auto it = json_object.find("functions");
 
  if(it == json_object.end())
  {
    throw deserialization_exceptiont{
      "goto_functions_from_json: JSON object must have key 'functions'"};
  }
 
  if(!it->second.is_array())
  {
    throw deserialization_exceptiont{
      "goto_functions_from_json: JSON functions must be an array"};
  }
 
  const json_arrayt &json_functions = to_json_array(it->second);
 
  for(const auto &function : json_functions)
  {
    if(!function.is_object())
    {
      throw deserialization_exceptiont{
        "goto_functions_from_json: JSON function must be an object"};
    }
 
    const json_objectt &json_function = to_json_object(function);
    auto name_it = json_function.find("name");
 
    if(name_it == json_function.end() || !name_it->second.is_string())
    {
      throw deserialization_exceptiont{
        "goto_functions_from_json: JSON function object must have key 'name' "
        "mapping to a string"};
    }
    const auto function_name = name_it->second.value;
 
    goto_functiont goto_function = goto_function_from_json(json_function);
    goto_functions.function_map[function_name] = std::move(goto_function);
  }
 
  goto_functions.update();
}