1/* Copyright JS Foundation and other contributors, http://js.foundation
2 *
3 * Licensed under the Apache License, Version 2.0 (the "License");
4 * you may not use this file except in compliance with the License.
5 * You may obtain a copy of the License at
6 *
7 *     http://www.apache.org/licenses/LICENSE-2.0
8 *
9 * Unless required by applicable law or agreed to in writing, software
10 * distributed under the License is distributed on an "AS IS" BASIS
11 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12 * See the License for the specific language governing permissions and
13 * limitations under the License.
14 */
15
16#include <stdio.h>
17#include <string.h>
18#include <stdlib.h>
19
20#include <zephyr.h>
21#include <misc/printk.h>
22#include "getline-zephyr.h"
23
24#include "jerryscript.h"
25#include "jerryscript-port.h"
26#include "jerryscript-ext/handler.h"
27
28static jerry_value_t print_function;
29
30/**
31 * Register a JavaScript function in the global object.
32 */
33static void
34register_js_function (const char *name_p, /**< name of the function */
35                      jerry_external_handler_t handler_p) /**< function callback */
36{
37  jerry_value_t result_val = jerryx_handler_register_global ((const jerry_char_t *) name_p, handler_p);
38
39  if (jerry_value_is_error (result_val))
40  {
41    jerry_port_log (JERRY_LOG_LEVEL_WARNING, "Warning: failed to register '%s' method.", name_p);
42  }
43
44  jerry_release_value (result_val);
45} /* register_js_function */
46
47static int shell_cmd_handler (char *source_buffer)
48{
49  jerry_value_t ret_val;
50
51  ret_val = jerry_eval ((jerry_char_t *) source_buffer,
52    strlen (source_buffer),
53    JERRY_PARSE_NO_OPTS);
54
55  if (jerry_value_is_error (ret_val))
56  {
57    /* User-friendly error messages require at least "cp" JerryScript
58       profile. Include a message prefix in case "cp_minimal" profile
59       is used. */
60    printf ("Error executing statement: ");
61    /* Clear error flag, otherwise print call below won't produce any
62       output. */
63    ret_val = jerry_get_value_from_error (ret_val, true);
64  }
65
66  if (!jerry_value_is_error (print_function))
67  {
68    jerry_value_t ret_val_print = jerry_call_function (print_function,
69      jerry_create_undefined (),
70      &ret_val,
71      1);
72    jerry_release_value (ret_val_print);
73  }
74
75  jerry_release_value (ret_val);
76
77  return 0;
78} /* shell_cmd_handler */
79
80void main (void)
81{
82  union { double d; unsigned u; } now = { .d = jerry_port_get_current_time () };
83  srand (now.u);
84  uint32_t zephyr_ver = sys_kernel_version_get ();
85  printf ("JerryScript build: " __DATE__ " " __TIME__ "\n");
86  printf ("JerryScript API %d.%d.%d\n", JERRY_API_MAJOR_VERSION, JERRY_API_MINOR_VERSION, JERRY_API_PATCH_VERSION);
87  printf ("Zephyr version %d.%d.%d\n", (int)SYS_KERNEL_VER_MAJOR (zephyr_ver),
88    (int)SYS_KERNEL_VER_MINOR (zephyr_ver),
89    (int)SYS_KERNEL_VER_PATCHLEVEL (zephyr_ver));
90
91  zephyr_getline_init ();
92  jerry_init (JERRY_INIT_EMPTY);
93  register_js_function ("print", jerryx_handler_print);
94  jerry_value_t global_obj_val = jerry_get_global_object ();
95
96  jerry_value_t print_func_name_val = jerry_create_string ((jerry_char_t *) "print");
97  print_function = jerry_get_property (global_obj_val, print_func_name_val);
98  jerry_release_value (print_func_name_val);
99  jerry_release_value (global_obj_val);
100  if (jerry_value_is_error (print_function))
101  {
102    printf ("Error: could not look up print function, expression results won't be printed\n");
103  }
104
105  while (1)
106  {
107    char *s;
108    printf("js> ");
109    fflush(stdout);
110    s = zephyr_getline ();
111    if (*s)
112    {
113      shell_cmd_handler (s);
114    }
115  }
116
117  /* As we never retturn from REPL above, don't call jerry_cleanup() here. */
118} /* main */
119