mirror of
https://github.com/jerryscript-project/jerryscript.git
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c7dcce4fc7
itself seems a step back, but the primary aim is opening future optimization opportunities. The list of changes follows: - Property is changed to be an abstract type, which has type, flags, and a value. It does not have a name anymore and property pointers cannot be compressed. - Full (32 bit) ecma values can be property values. This allows using non-compressed pointers for ecma values in the future. - The property chain is not restricted to the same item anymore, it can contain hash maps, arrays in the future. JerryScript-DCO-1.0-Signed-off-by: Zoltan Herczeg zherczeg.u-szeged@partner.samsung.com
488 lines
18 KiB
C
488 lines
18 KiB
C
/* Copyright 2014-2016 Samsung Electronics Co., Ltd.
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* Copyright 2016 University of Szeged
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#ifndef BUILTIN_UNDERSCORED_ID
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# error "Please, define BUILTIN_UNDERSCORED_ID"
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#endif /* !BUILTIN_UNDERSCORED_ID */
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#ifndef BUILTIN_INC_HEADER_NAME
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# error "Please, define BUILTIN_INC_HEADER_NAME"
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#endif /* !BUILTIN_INC_HEADER_NAME */
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#include "ecma-objects.h"
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#define PASTE__(x, y) x ## y
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#define PASTE_(x, y) PASTE__ (x, y)
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#define PASTE(x, y) PASTE_ (x, y)
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#define FIND_PROPERTY_INDEX_ROUTINE_NAME \
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PASTE (PASTE (ecma_builtin_, BUILTIN_UNDERSCORED_ID), _find_property_index)
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#define TRY_TO_INSTANTIATE_PROPERTY_ROUTINE_NAME \
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PASTE (PASTE (ecma_builtin_, BUILTIN_UNDERSCORED_ID), _try_to_instantiate_property)
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#define LIST_LAZY_PROPERTY_NAMES_ROUTINE_NAME \
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PASTE (PASTE (ecma_builtin_, BUILTIN_UNDERSCORED_ID), _list_lazy_property_names)
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#define DISPATCH_ROUTINE_ROUTINE_NAME \
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PASTE (PASTE (ecma_builtin_, BUILTIN_UNDERSCORED_ID), _dispatch_routine)
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#define ROUTINE_ARG(n) , ecma_value_t arg ## n
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#define ROUTINE_ARG_LIST_0 ecma_value_t this_arg
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#define ROUTINE_ARG_LIST_1 ROUTINE_ARG_LIST_0 ROUTINE_ARG(1)
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#define ROUTINE_ARG_LIST_2 ROUTINE_ARG_LIST_1 ROUTINE_ARG(2)
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#define ROUTINE_ARG_LIST_3 ROUTINE_ARG_LIST_2 ROUTINE_ARG(3)
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#define ROUTINE_ARG_LIST_NON_FIXED ROUTINE_ARG_LIST_0, \
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const ecma_value_t *arguments_list_p, ecma_length_t arguments_list_len
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#define ROUTINE(name, c_function_name, args_number, length_prop_value) \
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static ecma_value_t c_function_name (ROUTINE_ARG_LIST_ ## args_number);
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#include BUILTIN_INC_HEADER_NAME
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#undef ROUTINE_ARG_LIST_NON_FIXED
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#undef ROUTINE_ARG_LIST_3
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#undef ROUTINE_ARG_LIST_2
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#undef ROUTINE_ARG_LIST_1
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#undef ROUTINE_ARG_LIST_0
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#undef ROUTINE_ARG
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#define ECMA_BUILTIN_PROPERTY_NAMES \
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PASTE (PASTE (ecma_builtin_property_names, _), BUILTIN_UNDERSCORED_ID)
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static const lit_magic_string_id_t ECMA_BUILTIN_PROPERTY_NAMES[] =
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{
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#define SIMPLE_VALUE(name, obj_getter, prop_writable, prop_enumerable, prop_configurable) name,
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#define NUMBER_VALUE(name, obj_getter, prop_writable, prop_enumerable, prop_configurable) name,
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#define STRING_VALUE(name, obj_getter, prop_writable, prop_enumerable, prop_configurable) name,
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#define CP_UNIMPLEMENTED_VALUE(name, obj_getter, prop_writable, prop_enumerable, prop_configurable) name,
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#define OBJECT_VALUE(name, obj_getter, prop_writable, prop_enumerable, prop_configurable) name,
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#define ROUTINE(name, c_function_name, args_number, length_prop_value) name,
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#include BUILTIN_INC_HEADER_NAME
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};
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#define ECMA_BUILTIN_PROPERTY_NAME_INDEX(name) \
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PASTE (PASTE (PASTE (PASTE (ecma_builtin_property_names, _), BUILTIN_UNDERSCORED_ID), _), name)
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enum
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{
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#define SIMPLE_VALUE(name, obj_getter, prop_writable, prop_enumerable, prop_configurable) \
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ECMA_BUILTIN_PROPERTY_NAME_INDEX(name),
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#define NUMBER_VALUE(name, obj_getter, prop_writable, prop_enumerable, prop_configurable) \
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ECMA_BUILTIN_PROPERTY_NAME_INDEX(name),
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#define STRING_VALUE(name, obj_getter, prop_writable, prop_enumerable, prop_configurable) \
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ECMA_BUILTIN_PROPERTY_NAME_INDEX(name),
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#define CP_UNIMPLEMENTED_VALUE(name, obj_getter, prop_writable, prop_enumerable, prop_configurable) \
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ECMA_BUILTIN_PROPERTY_NAME_INDEX(name),
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#define OBJECT_VALUE(name, obj_getter, prop_writable, prop_enumerable, prop_configurable) \
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ECMA_BUILTIN_PROPERTY_NAME_INDEX(name),
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#define ROUTINE(name, c_function_name, args_number, length_prop_value) \
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ECMA_BUILTIN_PROPERTY_NAME_INDEX(name),
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#include BUILTIN_INC_HEADER_NAME
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};
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/**
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* Return the index of a magic string ID in the ECMA_BUILTIN_PROPERTY_NAMES
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* array, or -1 if not found.
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*
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* Note: we trust the compiler to find the optimal (most performance and/or
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* memory effective) way of implementing the switch construct of this function
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* in binary code (e.g., jump tables for large consecutive cases, binary search
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* for non-consecutive cases, some simple conditional branches for low number of
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* cases, etc. -- the worst case is a linear sequence of comparisons, but even
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* that's not that bad, since we cannot have more than 64 IDs in the array).
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*/
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static int32_t
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FIND_PROPERTY_INDEX_ROUTINE_NAME (lit_magic_string_id_t id) /**< magic string id */
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{
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switch (id)
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{
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#define SIMPLE_VALUE(name, obj_getter, prop_writable, prop_enumerable, prop_configurable) \
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case name: \
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{ \
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return ECMA_BUILTIN_PROPERTY_NAME_INDEX(name); \
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}
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#define NUMBER_VALUE(name, obj_getter, prop_writable, prop_enumerable, prop_configurable) \
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case name: \
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{ \
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return ECMA_BUILTIN_PROPERTY_NAME_INDEX(name); \
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}
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#define STRING_VALUE(name, obj_getter, prop_writable, prop_enumerable, prop_configurable) \
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case name: \
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{ \
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return ECMA_BUILTIN_PROPERTY_NAME_INDEX(name); \
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}
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#define CP_UNIMPLEMENTED_VALUE(name, obj_getter, prop_writable, prop_enumerable, prop_configurable) \
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case name: \
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{ \
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return ECMA_BUILTIN_PROPERTY_NAME_INDEX(name); \
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}
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#define OBJECT_VALUE(name, obj_getter, prop_writable, prop_enumerable, prop_configurable) \
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case name: \
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{ \
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return ECMA_BUILTIN_PROPERTY_NAME_INDEX(name); \
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}
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#define ROUTINE(name, c_function_name, args_number, length_prop_value) \
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case name: \
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{ \
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return ECMA_BUILTIN_PROPERTY_NAME_INDEX(name); \
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}
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#include BUILTIN_INC_HEADER_NAME
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default:
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{
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return -1;
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}
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}
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} /* FIND_PROPERTY_INDEX_ROUTINE_NAME */
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/**
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* If the property's name is one of built-in properties of the built-in object
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* that is not instantiated yet, instantiate the property and
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* return pointer to the instantiated property.
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*
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* @return pointer property, if one was instantiated,
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* NULL - otherwise.
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*/
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ecma_property_t *
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TRY_TO_INSTANTIATE_PROPERTY_ROUTINE_NAME (ecma_object_t *obj_p, /**< object */
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ecma_string_t *prop_name_p) /**< property's name */
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{
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#define OBJECT_ID(builtin_id) const ecma_builtin_id_t builtin_object_id = builtin_id;
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#include BUILTIN_INC_HEADER_NAME
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JERRY_ASSERT (ecma_builtin_is (obj_p, builtin_object_id));
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JERRY_ASSERT (ecma_find_named_property (obj_p, prop_name_p) == NULL);
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lit_magic_string_id_t id;
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if (!ecma_is_string_magic (prop_name_p, &id))
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{
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return NULL;
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}
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int32_t index = FIND_PROPERTY_INDEX_ROUTINE_NAME (id);
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if (index == -1)
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{
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return NULL;
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}
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JERRY_ASSERT (index >= 0 && (uint32_t) index < sizeof (uint64_t) * JERRY_BITSINBYTE);
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uint32_t bit;
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ecma_internal_property_id_t mask_prop_id;
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if (index >= 32)
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{
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mask_prop_id = ECMA_INTERNAL_PROPERTY_NON_INSTANTIATED_BUILT_IN_MASK_32_63;
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bit = (uint32_t) 1u << (index - 32);
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}
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else
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{
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mask_prop_id = ECMA_INTERNAL_PROPERTY_NON_INSTANTIATED_BUILT_IN_MASK_0_31;
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bit = (uint32_t) 1u << index;
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}
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ecma_property_t *mask_prop_p = ecma_find_internal_property (obj_p, mask_prop_id);
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if (mask_prop_p == NULL)
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{
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mask_prop_p = ecma_create_internal_property (obj_p, mask_prop_id);
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ecma_set_internal_property_value (mask_prop_p, 0);
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}
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uint32_t bit_mask = ecma_get_internal_property_value (mask_prop_p);
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if (bit_mask & bit)
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{
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return NULL;
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}
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bit_mask |= bit;
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ecma_set_internal_property_value (mask_prop_p, bit_mask);
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ecma_value_t value = ecma_make_simple_value (ECMA_SIMPLE_VALUE_EMPTY);
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ecma_property_writable_value_t writable;
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ecma_property_enumerable_value_t enumerable;
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ecma_property_configurable_value_t configurable;
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switch (id)
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{
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JERRY_ASSERT ((uint16_t) id == id);
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#define ROUTINE(name, c_function_name, args_number, length_prop_value) case name: \
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{ \
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ecma_object_t *func_obj_p = ecma_builtin_make_function_object_for_routine (builtin_object_id, \
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id, \
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length_prop_value); \
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\
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writable = ECMA_PROPERTY_WRITABLE; \
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enumerable = ECMA_PROPERTY_NOT_ENUMERABLE; \
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configurable = ECMA_PROPERTY_CONFIGURABLE; \
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\
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value = ecma_make_object_value (func_obj_p); \
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\
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break; \
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}
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#define OBJECT_VALUE(name, obj_getter, prop_writable, prop_enumerable, prop_configurable) case name: \
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{ \
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value = ecma_make_object_value (obj_getter); \
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writable = prop_writable; \
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enumerable = prop_enumerable; \
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configurable = prop_configurable; \
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break; \
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}
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#define SIMPLE_VALUE(name, simple_value, prop_writable, prop_enumerable, prop_configurable) case name: \
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{ \
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value = ecma_make_simple_value (simple_value); \
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\
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writable = prop_writable; \
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enumerable = prop_enumerable; \
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configurable = prop_configurable; \
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\
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break; \
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}
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#define NUMBER_VALUE(name, number_value, prop_writable, prop_enumerable, prop_configurable) case name: \
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{ \
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ecma_number_t *num_p = ecma_alloc_number (); \
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*num_p = number_value; \
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\
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value = ecma_make_number_value (num_p); \
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\
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writable = prop_writable; \
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enumerable = prop_enumerable; \
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configurable = prop_configurable; \
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\
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break; \
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}
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#define STRING_VALUE(name, magic_string_id, prop_writable, prop_enumerable, prop_configurable) case name: \
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{ \
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ecma_string_t *magic_string_p = ecma_get_magic_string (magic_string_id); \
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\
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value = ecma_make_string_value (magic_string_p); \
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\
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writable = prop_writable; \
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enumerable = prop_enumerable; \
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configurable = prop_configurable; \
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\
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break; \
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}
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#ifdef CONFIG_ECMA_COMPACT_PROFILE
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#define CP_UNIMPLEMENTED_VALUE(name, value, prop_writable, prop_enumerable, prop_configurable) case name: \
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{ \
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/* The object throws CompactProfileError upon invocation */ \
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ecma_object_t *get_set_p = ecma_builtin_get (ECMA_BUILTIN_ID_COMPACT_PROFILE_ERROR); \
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ecma_property_t *compact_profile_thrower_property_p = ecma_create_named_accessor_property (obj_p, \
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prop_name_p, \
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get_set_p, \
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get_set_p, \
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true, \
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false); \
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ecma_deref_object (get_set_p); \
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\
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return compact_profile_thrower_property_p; \
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}
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#else /* CONFIG_ECMA_COMPACT_PROFILE */
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#define CP_UNIMPLEMENTED_VALUE(name, value, prop_writable, prop_enumerable, prop_configurable) case name: \
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{ \
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JERRY_UNIMPLEMENTED ("The built-in is not implemented."); \
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}
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#endif /* CONFIG_ECMA_COMPACT_PROFILE */
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#include BUILTIN_INC_HEADER_NAME
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default:
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{
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JERRY_UNREACHABLE ();
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}
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}
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ecma_property_t *prop_p = ecma_create_named_data_property (obj_p,
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prop_name_p,
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writable,
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enumerable,
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configurable);
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ecma_named_data_property_assign_value (obj_p, prop_p, value);
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ecma_free_value (value);
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return prop_p;
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} /* TRY_TO_INSTANTIATE_PROPERTY_ROUTINE_NAME */
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/**
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* List names of the built-in object's lazy instantiated properties
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*
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* See also:
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* TRY_TO_INSTANTIATE_PROPERTY_ROUTINE_NAME
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*
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* @return string values collection
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*/
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void
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LIST_LAZY_PROPERTY_NAMES_ROUTINE_NAME (ecma_object_t *object_p, /**< a built-in object */
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bool separate_enumerable, /**< true - list enumerable properties
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into main collection,
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and non-enumerable to
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collection of 'skipped
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non-enumerable'
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properties,
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false - list all properties into
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main collection. */
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ecma_collection_header_t *main_collection_p, /**< 'main' collection */
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ecma_collection_header_t *non_enum_collection_p) /**< skipped 'non-enumerable'
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collection */
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{
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ecma_collection_header_t *for_enumerable_p = main_collection_p;
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(void) for_enumerable_p;
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ecma_collection_header_t *for_non_enumerable_p = separate_enumerable ? non_enum_collection_p : main_collection_p;
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#define OBJECT_ID(builtin_id) const ecma_builtin_id_t builtin_object_id = builtin_id;
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#include BUILTIN_INC_HEADER_NAME
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JERRY_ASSERT (ecma_builtin_is (object_p, builtin_object_id));
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const ecma_length_t properties_number = (ecma_length_t) (sizeof (ECMA_BUILTIN_PROPERTY_NAMES) /
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sizeof (ECMA_BUILTIN_PROPERTY_NAMES[0]));
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for (ecma_length_t index = 0;
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index < properties_number;
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index++)
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{
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lit_magic_string_id_t name = ECMA_BUILTIN_PROPERTY_NAMES[index];
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uint32_t bit;
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ecma_internal_property_id_t mask_prop_id;
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if (index >= 32)
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{
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mask_prop_id = ECMA_INTERNAL_PROPERTY_NON_INSTANTIATED_BUILT_IN_MASK_32_63;
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bit = (uint32_t) 1u << (index - 32);
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}
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else
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{
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mask_prop_id = ECMA_INTERNAL_PROPERTY_NON_INSTANTIATED_BUILT_IN_MASK_0_31;
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bit = (uint32_t) 1u << index;
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}
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ecma_property_t *mask_prop_p = ecma_find_internal_property (object_p, mask_prop_id);
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bool is_instantiated = false;
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if (mask_prop_p == NULL)
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{
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is_instantiated = true;
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}
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else
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{
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uint32_t bit_mask = ecma_get_internal_property_value (mask_prop_p);
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if (bit_mask & bit)
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{
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is_instantiated = true;
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}
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else
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{
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is_instantiated = false;
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}
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}
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bool is_existing;
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ecma_string_t *name_p = ecma_get_magic_string (name);
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if (!is_instantiated)
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{
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/* will be instantiated upon first request */
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is_existing = true;
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}
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else
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{
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if (ecma_op_object_get_own_property (object_p, name_p) == NULL)
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{
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is_existing = false;
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}
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else
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{
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is_existing = true;
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}
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}
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if (is_existing)
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{
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ecma_append_to_values_collection (for_non_enumerable_p,
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ecma_make_string_value (name_p),
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true);
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}
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ecma_deref_ecma_string (name_p);
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}
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} /* LIST_LAZY_PROPERTY_NAMES_ROUTINE_NAME */
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/**
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* Dispatcher of the built-in's routines
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*
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* @return ecma value
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* Returned value must be freed with ecma_free_value.
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*/
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ecma_value_t
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DISPATCH_ROUTINE_ROUTINE_NAME (uint16_t builtin_routine_id, /**< built-in wide routine
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identifier */
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ecma_value_t this_arg_value, /**< 'this' argument
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value */
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const ecma_value_t arguments_list[], /**< list of arguments
|
|
passed to routine */
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|
ecma_length_t arguments_number) /**< length of
|
|
arguments' list */
|
|
{
|
|
/* the arguments may be unused for some built-ins */
|
|
(void) this_arg_value;
|
|
(void) arguments_list;
|
|
(void) arguments_number;
|
|
|
|
switch (builtin_routine_id)
|
|
{
|
|
#define ROUTINE_ARG(n) (arguments_number >= n ? arguments_list[n - 1] \
|
|
: ecma_make_simple_value (ECMA_SIMPLE_VALUE_UNDEFINED))
|
|
#define ROUTINE_ARG_LIST_0
|
|
#define ROUTINE_ARG_LIST_1 , ROUTINE_ARG(1)
|
|
#define ROUTINE_ARG_LIST_2 ROUTINE_ARG_LIST_1, ROUTINE_ARG(2)
|
|
#define ROUTINE_ARG_LIST_3 ROUTINE_ARG_LIST_2, ROUTINE_ARG(3)
|
|
#define ROUTINE_ARG_LIST_NON_FIXED , arguments_list, arguments_number
|
|
#define ROUTINE(name, c_function_name, args_number, length_prop_value) \
|
|
case name: \
|
|
{ \
|
|
return c_function_name (this_arg_value ROUTINE_ARG_LIST_ ## args_number); \
|
|
}
|
|
#include BUILTIN_INC_HEADER_NAME
|
|
#undef ROUTINE_ARG
|
|
#undef ROUTINE_ARG_LIST_0
|
|
#undef ROUTINE_ARG_LIST_1
|
|
#undef ROUTINE_ARG_LIST_2
|
|
#undef ROUTINE_ARG_LIST_3
|
|
#undef ROUTINE_ARG_LIST_NON_FIXED
|
|
|
|
default:
|
|
{
|
|
JERRY_UNREACHABLE ();
|
|
}
|
|
}
|
|
} /* DISPATCH_ROUTINE_ROUTINE_NAME */
|
|
|
|
#undef PASTE__
|
|
#undef PASTE_
|
|
#undef PASTE
|
|
#undef FIND_PROPERTY_INDEX_ROUTINE_NAME
|
|
#undef TRY_TO_INSTANTIATE_PROPERTY_ROUTINE_NAME
|
|
#undef LIST_LAZY_PROPERTY_NAMES_ROUTINE_NAME
|
|
#undef DISPATCH_ROUTINE_ROUTINE_NAME
|
|
#undef BUILTIN_UNDERSCORED_ID
|
|
#undef BUILTIN_INC_HEADER_NAME
|
|
#undef ECMA_BUILTIN_PROPERTY_NAMES
|
|
#undef ECMA_BUILTIN_PROPERTY_NAME_INDEX
|