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-comparison.h"
17#include "ecma-conversion.h"
18#include "ecma-exceptions.h"
19#include "ecma-function-object.h"
20#include "ecma-helpers.h"
21#include "ecma-objects.h"
22#include "ecma-try-catch-macro.h"
23#include "opcodes.h"
24
25/** \addtogroup vm Virtual machine
26 * @{
27 *
28 * \addtogroup vm_opcodes Opcodes
29 * @{
30 */
31
32/**
33* Equality opcode handler.
34*
35* See also: ECMA-262 v5, 11.9.1, 11.9.2
36*
37* @return ecma value
38*         Returned value must be freed with ecma_free_value
39*/
40ecma_value_t
41opfunc_equality (ecma_value_t left_value, /**< left value */
42                 ecma_value_t right_value) /**< right value */
43{
44  JERRY_ASSERT (!ECMA_IS_VALUE_ERROR (left_value)
45                && !ECMA_IS_VALUE_ERROR (right_value));
46
47  ecma_value_t compare_result = ecma_op_abstract_equality_compare (left_value, right_value);
48
49  JERRY_ASSERT (ecma_is_value_boolean (compare_result)
50                || ECMA_IS_VALUE_ERROR (compare_result));
51
52  return compare_result;
53} /* opfunc_equality */
54
55/**
56 * Relation opcode handler.
57 *
58 * See also: ECMA-262 v5, 11.8.1, 11.8.2, 11.8.3, 11.8.4
59 *
60 * @return ecma value
61 *         Returned value must be freed with ecma_free_value
62 */
63ecma_value_t
64opfunc_relation (ecma_value_t left_value, /**< left value */
65                 ecma_value_t right_value, /**< right value */
66                 bool left_first, /**< 'LeftFirst' flag */
67                 bool is_invert) /**< is invert */
68{
69  JERRY_ASSERT (!ECMA_IS_VALUE_ERROR (left_value)
70                && !ECMA_IS_VALUE_ERROR (right_value));
71
72  ecma_value_t ret_value = ecma_op_abstract_relational_compare (left_value, right_value, left_first);
73
74  if (ECMA_IS_VALUE_ERROR (ret_value))
75  {
76    return ret_value;
77  }
78
79  if (ecma_is_value_undefined (ret_value))
80  {
81    ret_value = ECMA_VALUE_FALSE;
82  }
83  else
84  {
85    JERRY_ASSERT (ecma_is_value_boolean (ret_value));
86
87    if (is_invert)
88    {
89      ret_value = ecma_invert_boolean_value (ret_value);
90    }
91  }
92
93  return ret_value;
94} /* opfunc_relation */
95
96/**
97 * 'instanceof' opcode handler.
98 *
99 * See also: ECMA-262 v5, 11.8.6
100 *
101 * @return ecma value
102 *         returned value must be freed with ecma_free_value.
103 */
104ecma_value_t
105opfunc_instanceof (ecma_value_t left_value, /**< left value */
106                   ecma_value_t right_value) /**< right value */
107{
108  if (!ecma_is_value_object (right_value))
109  {
110    return ecma_raise_type_error (ECMA_ERR_MSG ("Expected an object in 'instanceof' check."));
111  }
112
113#if ENABLED (JERRY_ES2015)
114  ecma_value_t has_instance_method = ecma_op_get_method_by_symbol_id (right_value, LIT_GLOBAL_SYMBOL_HAS_INSTANCE);
115  if (ECMA_IS_VALUE_ERROR (has_instance_method))
116  {
117    return has_instance_method;
118  }
119
120  if (JERRY_UNLIKELY (!ecma_is_value_undefined (has_instance_method)))
121  {
122    ecma_object_t *method_obj_p = ecma_get_object_from_value (has_instance_method);
123    ecma_value_t has_instance_result = ecma_op_function_call (method_obj_p, right_value, &left_value, 1);
124
125    ecma_free_value (has_instance_method);
126
127    if (ECMA_IS_VALUE_ERROR (has_instance_result))
128    {
129      return has_instance_result;
130    }
131
132    bool has_instance = ecma_op_to_boolean (has_instance_result);
133    ecma_free_value (has_instance_result);
134
135    return ecma_make_boolean_value (has_instance);
136  }
137#endif /* ENABLED (JERRY_ES2015) */
138
139  ecma_object_t *right_value_obj_p = ecma_get_object_from_value (right_value);
140  return ecma_op_object_has_instance (right_value_obj_p, left_value);
141} /* opfunc_instanceof */
142
143/**
144 * 'in' opcode handler.
145 *
146 * See also:
147 *  * ECMA-262 v5, 11.8.7
148 *  * ECAM-262 v6, 12.9.3
149 *
150 * @return ecma value
151 *         returned value must be freed with ecma_free_value.
152 */
153ecma_value_t
154opfunc_in (ecma_value_t left_value, /**< left value */
155           ecma_value_t right_value) /**< right value */
156{
157  if (!ecma_is_value_object (right_value))
158  {
159    return ecma_raise_type_error (ECMA_ERR_MSG ("Expected an object in 'in' check."));
160  }
161
162  ecma_string_t *property_name_p = ecma_op_to_prop_name (left_value);
163
164  if (JERRY_UNLIKELY (property_name_p == NULL))
165  {
166    return ECMA_VALUE_ERROR;
167  }
168
169  ecma_object_t *right_value_obj_p = ecma_get_object_from_value (right_value);
170  ecma_value_t result = ecma_op_object_has_property (right_value_obj_p, property_name_p);
171  ecma_deref_ecma_string (property_name_p);
172  return result;
173} /* opfunc_in */
174
175/**
176 * @}
177 * @}
178 */
179