/** * The processor for PromiseReactionJob. * * See also: ES2015 25.4.2.1 * * @return ecma value * Returned value must be freed with ecma_free_value */ static ecma_value_t ecma_process_promise_reaction_job (void *obj_p) /**< the job to be operated */ { ecma_job_promise_reaction_t *job_p = (ecma_job_promise_reaction_t *) obj_p; ecma_object_t *reaction_p = ecma_get_object_from_value (job_p->reaction); ecma_string_t *str_capability = ecma_new_ecma_string_from_uint32 (ECMA_PROMISE_PROPERTY_CAPABILITY); ecma_string_t *str_handler = ecma_new_ecma_string_from_uint32 (ECMA_PROMISE_PROPERTY_HANDLER); ecma_string_t *str_resolve = ecma_new_ecma_string_from_uint32 (ECMA_PROMISE_PROPERTY_RESOLVE); ecma_string_t *str_reject = ecma_new_ecma_string_from_uint32 (ECMA_PROMISE_PROPERTY_REJECT); /* 2. */ ecma_value_t capability = ecma_op_object_get (reaction_p, str_capability); /* 3. */ ecma_value_t handler = ecma_op_object_get (reaction_p, str_handler); JERRY_ASSERT (ecma_is_value_boolean (handler) || ecma_op_is_callable (handler)); ecma_value_t handler_result; if (ecma_is_value_boolean (handler)) { /* 4-5. True indicates "identity" and false indicates "thrower" */ handler_result = ecma_copy_value (job_p->argument); } else { /* 6. */ handler_result = ecma_op_function_call (ecma_get_object_from_value (handler), ecma_make_simple_value (ECMA_SIMPLE_VALUE_UNDEFINED), &(job_p->argument), 1); } ecma_value_t status; if (ecma_is_value_false (handler) || ECMA_IS_VALUE_ERROR (handler_result)) { if (ECMA_IS_VALUE_ERROR (handler_result)) { handler_result = ecma_get_value_from_error_value (handler_result); } /* 7. */ ecma_value_t reject = ecma_op_object_get (ecma_get_object_from_value (capability), str_reject); JERRY_ASSERT (ecma_op_is_callable (reject)); status = ecma_op_function_call (ecma_get_object_from_value (reject), ecma_make_simple_value (ECMA_SIMPLE_VALUE_UNDEFINED), &handler_result, 1); ecma_free_value (reject); } else { /* 8. */ ecma_value_t resolve = ecma_op_object_get (ecma_get_object_from_value (capability), str_resolve); JERRY_ASSERT (ecma_op_is_callable (resolve)); status = ecma_op_function_call (ecma_get_object_from_value (resolve), ecma_make_simple_value (ECMA_SIMPLE_VALUE_UNDEFINED), &handler_result, 1); ecma_free_value (resolve); } ecma_free_value (handler_result); ecma_free_value (handler); ecma_free_value (capability); ecma_deref_ecma_string (str_capability); ecma_deref_ecma_string (str_handler); ecma_deref_ecma_string (str_resolve); ecma_deref_ecma_string (str_reject); ecma_free_promise_reaction_job (job_p); return status; } /* ecma_process_promise_reaction_job */
/** * [[DefineOwnProperty]] ecma array object's operation * * See also: * ECMA-262 v5, 8.6.2; ECMA-262 v5, Table 8 * ECMA-262 v5, 15.4.5.1 * * @return ecma value * Returned value must be freed with ecma_free_value */ ecma_value_t ecma_op_array_object_define_own_property (ecma_object_t *obj_p, /**< the array object */ ecma_string_t *property_name_p, /**< property name */ const ecma_property_descriptor_t *property_desc_p, /**< property descriptor */ bool is_throw) /**< flag that controls failure handling */ { JERRY_ASSERT (ecma_get_object_type (obj_p) == ECMA_OBJECT_TYPE_ARRAY); // 1. ecma_string_t *magic_string_length_p = ecma_get_magic_string (LIT_MAGIC_STRING_LENGTH); ecma_property_t *len_prop_p = ecma_op_object_get_own_property (obj_p, magic_string_length_p); JERRY_ASSERT (len_prop_p != NULL && len_prop_p->type == ECMA_PROPERTY_NAMEDDATA); // 2. ecma_value_t old_len_value = ecma_get_named_data_property_value (len_prop_p); ecma_number_t *num_p = ecma_get_number_from_value (old_len_value); uint32_t old_len_uint32 = ecma_number_to_uint32 (*num_p); // 3. bool is_property_name_equal_length = ecma_compare_ecma_strings (property_name_p, magic_string_length_p); ecma_deref_ecma_string (magic_string_length_p); if (is_property_name_equal_length) { // a. if (!property_desc_p->is_value_defined) { // i. return ecma_op_general_object_define_own_property (obj_p, property_name_p, property_desc_p, is_throw); } ecma_number_t new_len_num; // c. ecma_value_t completion = ecma_op_to_number (property_desc_p->value); if (ecma_is_value_error (completion)) { return completion; } JERRY_ASSERT (!ecma_is_value_error (completion) && ecma_is_value_number (completion)); new_len_num = *ecma_get_number_from_value (completion); ecma_free_value (completion); uint32_t new_len_uint32 = ecma_number_to_uint32 (new_len_num); // d. if (ecma_uint32_to_number (new_len_uint32) != new_len_num) { return ecma_raise_range_error (""); } else { // b., e. ecma_number_t *new_len_num_p = ecma_alloc_number (); *new_len_num_p = new_len_num; ecma_property_descriptor_t new_len_property_desc = *property_desc_p; new_len_property_desc.value = ecma_make_number_value (new_len_num_p); ecma_value_t ret_value = ecma_make_simple_value (ECMA_SIMPLE_VALUE_EMPTY); // f. if (new_len_uint32 >= old_len_uint32) { // i. magic_string_length_p = ecma_get_magic_string (LIT_MAGIC_STRING_LENGTH); ret_value = ecma_op_general_object_define_own_property (obj_p, magic_string_length_p, &new_len_property_desc, is_throw); ecma_deref_ecma_string (magic_string_length_p); } else { // g. if (!ecma_is_property_writable (len_prop_p)) { ret_value = ecma_reject (is_throw); } else { // h. bool new_writable; if (!new_len_property_desc.is_writable_defined || new_len_property_desc.is_writable) { new_writable = true; } else { // ii. new_writable = false; // iii. new_len_property_desc.is_writable_defined = true; new_len_property_desc.is_writable = true; } // j. magic_string_length_p = ecma_get_magic_string (LIT_MAGIC_STRING_LENGTH); ecma_value_t succeeded = ecma_op_general_object_define_own_property (obj_p, magic_string_length_p, &new_len_property_desc, is_throw); ecma_deref_ecma_string (magic_string_length_p); /* Handling normal false and throw values */ if (!ecma_is_value_true (succeeded)) { JERRY_ASSERT (ecma_is_value_false (succeeded) || ecma_is_value_error (succeeded)); // k. ret_value = succeeded; } else { // l JERRY_ASSERT (new_len_uint32 < old_len_uint32); /* * Item i. is replaced with faster iteration: only indices that actually exist in the array, are iterated */ bool is_reduce_succeeded = true; ecma_collection_header_t *array_index_props_p = ecma_op_object_get_property_names (obj_p, true, false, false); ecma_length_t array_index_props_num = array_index_props_p->unit_number; MEM_DEFINE_LOCAL_ARRAY (array_index_values_p, array_index_props_num, uint32_t); ecma_collection_iterator_t iter; ecma_collection_iterator_init (&iter, array_index_props_p); uint32_t array_index_values_pos = 0; while (ecma_collection_iterator_next (&iter)) { ecma_string_t *property_name_p = ecma_get_string_from_value (*iter.current_value_p); uint32_t index; bool is_index = ecma_string_get_array_index (property_name_p, &index); JERRY_ASSERT (is_index); JERRY_ASSERT (index < old_len_uint32); array_index_values_p[array_index_values_pos++] = index; } JERRY_ASSERT (array_index_values_pos == array_index_props_num); while (array_index_values_pos != 0 && array_index_values_p[--array_index_values_pos] >= new_len_uint32) { uint32_t index = array_index_values_p[array_index_values_pos]; // ii. ecma_string_t *index_string_p = ecma_new_ecma_string_from_uint32 (index); ecma_value_t delete_succeeded = ecma_op_object_delete (obj_p, index_string_p, false); ecma_deref_ecma_string (index_string_p); if (ecma_is_value_false (delete_succeeded)) { // iii. new_len_uint32 = (index + 1u); ecma_number_t *new_len_num_p = ecma_get_number_from_value (new_len_property_desc.value); // 1. *new_len_num_p = ecma_uint32_to_number (index + 1u); // 2. if (!new_writable) { new_len_property_desc.is_writable_defined = true; new_len_property_desc.is_writable = false; } // 3. ecma_string_t *magic_string_length_p = ecma_get_magic_string (LIT_MAGIC_STRING_LENGTH); ecma_value_t completion = ecma_op_general_object_define_own_property (obj_p, magic_string_length_p, &new_len_property_desc, false); ecma_deref_ecma_string (magic_string_length_p); JERRY_ASSERT (ecma_is_value_boolean (completion)); is_reduce_succeeded = false; break; } } MEM_FINALIZE_LOCAL_ARRAY (array_index_values_p); ecma_free_values_collection (array_index_props_p, true); if (!is_reduce_succeeded) { ret_value = ecma_reject (is_throw); } else { // m. if (!new_writable) { ecma_property_descriptor_t prop_desc_not_writable = ecma_make_empty_property_descriptor (); prop_desc_not_writable.is_writable_defined = true; prop_desc_not_writable.is_writable = false; ecma_value_t completion_set_not_writable; magic_string_length_p = ecma_get_magic_string (LIT_MAGIC_STRING_LENGTH); completion_set_not_writable = ecma_op_general_object_define_own_property (obj_p, magic_string_length_p, &prop_desc_not_writable, false); ecma_deref_ecma_string (magic_string_length_p); JERRY_ASSERT (ecma_is_value_true (completion_set_not_writable)); } ret_value = ecma_make_simple_value (ECMA_SIMPLE_VALUE_TRUE); } } } } ecma_dealloc_number (new_len_num_p); return ret_value; } JERRY_UNREACHABLE (); } else { // 4.a. uint32_t index; if (!ecma_string_get_array_index (property_name_p, &index)) { // 5. return ecma_op_general_object_define_own_property (obj_p, property_name_p, property_desc_p, is_throw); } // 4. // b. if (index >= old_len_uint32 && !ecma_is_property_writable (len_prop_p)) { return ecma_reject (is_throw); } // c. ecma_value_t succeeded = ecma_op_general_object_define_own_property (obj_p, property_name_p, property_desc_p, false); // d. JERRY_ASSERT (ecma_is_value_boolean (succeeded)); if (ecma_is_value_false (succeeded)) { return ecma_reject (is_throw); } // e. if (index >= old_len_uint32) { // i., ii. ecma_number_t *num_p = ecma_alloc_number (); *num_p = ecma_number_add (ecma_uint32_to_number (index), ECMA_NUMBER_ONE); ecma_named_data_property_assign_value (obj_p, len_prop_p, ecma_make_number_value (num_p)); ecma_dealloc_number (num_p); } // f. return ecma_make_simple_value (ECMA_SIMPLE_VALUE_TRUE); } JERRY_UNREACHABLE (); } /* ecma_op_array_object_define_own_property */
/** * [[DefineOwnProperty]] ecma array object's operation * * See also: * ECMA-262 v5, 8.6.2; ECMA-262 v5, Table 8 * ECMA-262 v5, 15.4.5.1 * * @return ecma value * Returned value must be freed with ecma_free_value */ ecma_value_t ecma_op_array_object_define_own_property (ecma_object_t *object_p, /**< the array object */ ecma_string_t *property_name_p, /**< property name */ const ecma_property_descriptor_t *property_desc_p, /**< property descriptor */ bool is_throw) /**< flag that controls failure handling */ { if (ecma_string_is_length (property_name_p)) { if (!property_desc_p->is_value_defined) { return ecma_op_general_object_define_own_property (object_p, property_name_p, property_desc_p, is_throw); } JERRY_ASSERT (property_desc_p->is_configurable_defined || !property_desc_p->is_configurable); JERRY_ASSERT (property_desc_p->is_enumerable_defined || !property_desc_p->is_enumerable); JERRY_ASSERT (property_desc_p->is_writable_defined || !property_desc_p->is_writable); uint32_t flags = 0; if (is_throw) { flags |= ECMA_ARRAY_OBJECT_SET_LENGTH_FLAG_IS_THROW; } /* Only the writable and data properties can be modified. */ if (property_desc_p->is_configurable || property_desc_p->is_enumerable || property_desc_p->is_get_defined || property_desc_p->is_set_defined) { flags |= ECMA_ARRAY_OBJECT_SET_LENGTH_FLAG_REJECT; } if (property_desc_p->is_writable_defined) { flags |= ECMA_ARRAY_OBJECT_SET_LENGTH_FLAG_WRITABLE_DEFINED; } if (property_desc_p->is_writable) { flags |= ECMA_ARRAY_OBJECT_SET_LENGTH_FLAG_WRITABLE; } return ecma_op_array_object_set_length (object_p, property_desc_p->value, flags); } uint32_t index = ecma_string_get_array_index (property_name_p); if (index == ECMA_STRING_NOT_ARRAY_INDEX) { return ecma_op_general_object_define_own_property (object_p, property_name_p, property_desc_p, is_throw); } ecma_string_t magic_string_length; ecma_init_ecma_length_string (&magic_string_length); ecma_property_t *len_prop_p = ecma_find_named_property (object_p, &magic_string_length); JERRY_ASSERT (len_prop_p != NULL && ECMA_PROPERTY_GET_TYPE (*len_prop_p) == ECMA_PROPERTY_TYPE_NAMEDDATA); ecma_property_value_t *len_prop_value_p = ECMA_PROPERTY_VALUE_PTR (len_prop_p); bool update_length = (index >= ecma_get_uint32_from_value (len_prop_value_p->value)); if (update_length && !ecma_is_property_writable (*len_prop_p)) { return ecma_reject (is_throw); } ecma_value_t completition = ecma_op_general_object_define_own_property (object_p, property_name_p, property_desc_p, false); JERRY_ASSERT (ecma_is_value_boolean (completition)); if (ecma_is_value_false (completition)) { return ecma_reject (is_throw); } if (update_length) { ecma_value_assign_uint32 (&len_prop_value_p->value, index + 1); } return ecma_make_simple_value (ECMA_SIMPLE_VALUE_TRUE); } /* ecma_op_array_object_define_own_property */