text: /* Copyright JS Foundation and other contributors, http://js.foundation
   *
   * 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.
   */
  
  #include <stdio.h>
  #include <stdlib.h>
  #include <string.h>
  #include "shell.h"
  #include "jerryscript.h"
  #include "jerryscript-ext/handler.h"
  #include "jerryscript-port.h"
  
  /**
   * Standalone Jerry exit codes
   */
  #define JERRY_STANDALONE_EXIT_CODE_OK   (0)
  #define JERRY_STANDALONE_EXIT_CODE_FAIL (1)
  
  /**
   * Register a JavaScript function in the global object.
   */
  static void
  register_js_function (const char *name_p, /**< name of the function */
                        jerry_external_handler_t handler_p) /**< function callback */
  {
    jerry_value_t result_val = jerryx_handler_register_global ((const jerry_char_t *) name_p, handler_p);
  
    if (jerry_value_is_error (result_val))
    {
      printf ("Warning: failed to register '%s' method.", name_p);
    }
  
    jerry_release_value (result_val);
  } /* register_js_function */
  
  /**
   * Jerryscript simple test
   */
  int test_jerry (int argc, char **argv)
  {
    /* Suppress compiler errors */
    (void) argc;
    (void) argv;
  
    jerry_value_t ret_value = jerry_create_undefined ();
  
    const jerry_char_t script[] = "print ('Hello, World!');";
    printf ("This test run the following script code: [%s]\n\n", script);
  
    /* Initialize engine */
    jerry_init (JERRY_INIT_EMPTY);
  
    /* Register the print function in the global object. */
    register_js_function ("print", jerryx_handler_print);
  
    /* Setup Global scope code */
    ret_value = jerry_parse (script, sizeof (script) - 1, NULL);
  
    if (!jerry_value_is_error (ret_value))
    {
      /* Execute the parsed source code in the Global scope */
      ret_value = jerry_run (ret_value);
    }
  
    int ret_code = JERRY_STANDALONE_EXIT_CODE_OK;
  
    if (jerry_value_is_error (ret_value))
    {
      printf ("Script Error!");
  
      ret_code = JERRY_STANDALONE_EXIT_CODE_FAIL;
    }
  
    jerry_release_value (ret_value);
  
    /* Cleanup engine */
    jerry_cleanup ();
  
    return ret_code;
  
  } /* test_jerry */
  
  const shell_command_t shell_commands[] = {
    { "test", "Jerryscript Hello World test", test_jerry },
    { NULL, NULL, NULL }
  };
  
  int main (void)
  {
    union { double d; unsigned u; } now = { .d = jerry_port_get_current_time () };
    srand (now.u);
    printf ("You are running RIOT on a(n) %s board.\n", RIOT_BOARD);
    printf ("This board features a(n) %s MCU.\n", RIOT_MCU);
  
    /* start the shell */
    char line_buf[SHELL_DEFAULT_BUFSIZE];
    shell_run (shell_commands, line_buf, SHELL_DEFAULT_BUFSIZE);
  
    return 0;
  }
  