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 "ecma-alloc.h"
17#include "ecma-builtins.h"
18#include "ecma-exceptions.h"
19#include "ecma-gc.h"
20#include "ecma-globals.h"
21#include "ecma-helpers.h"
22#include "ecma-objects.h"
23#include "ecma-objects-general.h"
24#include "ecma-string-object.h"
25
26/** \addtogroup ecma ECMA
27 * @{
28 *
29 * \addtogroup ecmastringobject ECMA String object related routines
30 * @{
31 */
32
33/**
34 * String object creation operation.
35 *
36 * See also: ECMA-262 v5, 15.5.2.1
37 *
38 * @return ecma value
39 *         Returned value must be freed with ecma_free_value
40 */
41ecma_value_t
42ecma_op_create_string_object (const ecma_value_t *arguments_list_p, /**< list of arguments that
43                                                                         are passed to String constructor */
44                              ecma_length_t arguments_list_len) /**< length of the arguments' list */
45{
46  JERRY_ASSERT (arguments_list_len == 0
47                || arguments_list_p != NULL);
48
49  ecma_value_t prim_value = ecma_make_magic_string_value (LIT_MAGIC_STRING__EMPTY);
50
51  if (arguments_list_len > 0)
52  {
53    ecma_string_t *str_p = ecma_op_to_string (arguments_list_p[0]);
54
55    if (JERRY_UNLIKELY (str_p == NULL))
56    {
57      return ECMA_VALUE_ERROR;
58    }
59
60    prim_value = ecma_make_string_value (str_p);
61  }
62
63#if ENABLED (JERRY_BUILTIN_STRING)
64  ecma_object_t *prototype_obj_p = ecma_builtin_get (ECMA_BUILTIN_ID_STRING_PROTOTYPE);
65#else /* !ENABLED (JERRY_BUILTIN_STRING) */
66  ecma_object_t *prototype_obj_p = ecma_builtin_get (ECMA_BUILTIN_ID_OBJECT_PROTOTYPE);
67#endif /* ENABLED (JERRY_BUILTIN_STRING) */
68
69  ecma_object_t *object_p = ecma_create_object (prototype_obj_p,
70                                                sizeof (ecma_extended_object_t),
71                                                ECMA_OBJECT_TYPE_CLASS);
72
73  ecma_extended_object_t *ext_object_p = (ecma_extended_object_t *) object_p;
74  ext_object_p->u.class_prop.class_id = LIT_MAGIC_STRING_STRING_UL;
75  ext_object_p->u.class_prop.u.value = prim_value;
76
77  return ecma_make_object_value (object_p);
78} /* ecma_op_create_string_object */
79
80/**
81 * List names of a String object's lazy instantiated properties
82 *
83 * @return string values collection
84 */
85void
86ecma_op_string_list_lazy_property_names (ecma_object_t *obj_p, /**< a String object */
87                                         uint32_t opts, /**< listing options using flags
88                                                         *   from ecma_list_properties_options_t */
89                                         ecma_collection_t *main_collection_p, /**< 'main' collection */
90                                         ecma_collection_t *non_enum_collection_p) /**< skipped
91                                                                                    *   'non-enumerable'
92                                                                                    *   collection */
93{
94  JERRY_ASSERT (ecma_get_object_type (obj_p) == ECMA_OBJECT_TYPE_CLASS);
95
96  ecma_collection_t *for_enumerable_p = main_collection_p;
97
98  ecma_collection_t *for_non_enumerable_p = (opts & ECMA_LIST_ENUMERABLE) ? non_enum_collection_p : main_collection_p;
99
100  ecma_extended_object_t *ext_object_p = (ecma_extended_object_t *) obj_p;
101  JERRY_ASSERT (ext_object_p->u.class_prop.class_id == LIT_MAGIC_STRING_STRING_UL);
102
103  ecma_string_t *prim_value_str_p = ecma_get_string_from_value (ext_object_p->u.class_prop.u.value);
104
105  ecma_length_t length = ecma_string_get_length (prim_value_str_p);
106
107  for (ecma_length_t i = 0; i < length; i++)
108  {
109    ecma_string_t *name_p = ecma_new_ecma_string_from_uint32 (i);
110
111    /* the properties are enumerable (ECMA-262 v5, 15.5.5.2.9) */
112    ecma_collection_push_back (for_enumerable_p, ecma_make_string_value (name_p));
113  }
114
115  if ((opts & ECMA_LIST_ARRAY_INDICES) == 0)
116  {
117    ecma_collection_push_back (for_non_enumerable_p, ecma_make_magic_string_value (LIT_MAGIC_STRING_LENGTH));
118  }
119} /* ecma_op_string_list_lazy_property_names */
120
121/**
122 * @}
123 * @}
124 */
125