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jerryscript/jerry-core/ecma/base/ecma-helpers.h
Zoltan Herczeg 6f1ce8d6bb Improve the construction of "length" built-in strings. 
The "length" property name is the most frequently used built-in string
and also frequently created by various hot-paths. New functions are
added to improve the speed of the "length" string creation.

JerryScript-DCO-1.0-Signed-off-by: Zoltan Herczeg zherczeg.u-szeged@partner.samsung.com
2016-07-13 23:36:27 -07:00

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/* Copyright 2014-2016 Samsung Electronics Co., Ltd.
* Copyright 2015-2016 University of Szeged.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#ifndef ECMA_HELPERS_H
#define ECMA_HELPERS_H
#include "ecma-globals.h"
#include "jmem-allocator.h"
#include "lit-strings.h"
/** \addtogroup ecma ECMA
* @{
*
* \addtogroup ecmahelpers Helpers for operations with ECMA data types
* @{
*/
/**
* Get value of pointer from specified non-null compressed pointer.
*/
#define ECMA_GET_NON_NULL_POINTER(type, field) JMEM_CP_GET_NON_NULL_POINTER (type, field)
/**
* Get value of pointer from specified compressed pointer.
*/
#define ECMA_GET_POINTER(type, field) JMEM_CP_GET_POINTER (type, field)
/**
* Set value of non-null compressed pointer so that it will correspond
* to specified non_compressed_pointer.
*/
#define ECMA_SET_NON_NULL_POINTER(field, non_compressed_pointer) JMEM_CP_SET_NON_NULL_POINTER (field, \
non_compressed_pointer)
/**
* Set value of compressed pointer so that it will correspond
* to specified non_compressed_pointer.
*/
#define ECMA_SET_POINTER(field, non_compressed_pointer) JMEM_CP_SET_POINTER (field, non_compressed_pointer)
/**
* Convert ecma-string's contents to a cesu-8 string and put it into a buffer.
*/
#define ECMA_STRING_TO_UTF8_STRING(ecma_str_ptr, /**< ecma string pointer */ \
utf8_ptr, /**< [out] output buffer pointer */ \
utf8_str_size) /**< [out] output buffer size */ \
lit_utf8_size_t utf8_str_size; \
bool utf8_ptr ## must_be_freed; \
const lit_utf8_byte_t *utf8_ptr = ecma_string_raw_chars (ecma_str_ptr, &utf8_str_size, &utf8_ptr ## must_be_freed); \
utf8_ptr ## must_be_freed = false; /* it was used as 'is_ascii' in 'ecma_string_raw_chars', so we must reset it */ \
\
if (utf8_ptr == NULL) \
{ \
utf8_ptr = (const lit_utf8_byte_t *) jmem_heap_alloc_block (utf8_str_size); \
ecma_string_to_utf8_bytes (ecma_str_ptr, (lit_utf8_byte_t *) utf8_ptr, utf8_str_size); \
utf8_ptr ## must_be_freed = true; \
}
#ifdef ECMA_VALUE_CAN_STORE_UINTPTR_VALUE_DIRECTLY
/**
* Set an internal property value of pointer
*/
#define ECMA_SET_INTERNAL_VALUE_POINTER(field, pointer) \
(field) = ((ecma_value_t) pointer)
/**
* Get an internal property value of pointer
*/
#define ECMA_GET_INTERNAL_VALUE_POINTER(type, field) \
((type *) field)
#else /* !ECMA_VALUE_CAN_STORE_UINTPTR_VALUE_DIRECTLY */
/**
* Set an internal property value of non-null pointer so that it will correspond
* to specified non_compressed_pointer.
*/
#define ECMA_SET_INTERNAL_VALUE_POINTER(field, non_compressed_pointer) \
ECMA_SET_NON_NULL_POINTER (field, non_compressed_pointer)
/**
* Get an internal property value of pointer from specified compressed pointer.
*/
#define ECMA_GET_INTERNAL_VALUE_POINTER(type, field) \
ECMA_GET_POINTER (type, field)
#endif /* ECMA_VALUE_CAN_STORE_UINTPTR_VALUE_DIRECTLY */
/**
* Free the cesu-8 string buffer allocated by 'ECMA_STRING_TO_UTF8_STRING'
*/
#define ECMA_FINALIZE_UTF8_STRING(utf8_ptr, /**< pointer to character buffer */ \
utf8_str_size) /**< buffer size */ \
if (utf8_ptr ## must_be_freed) \
{ \
JERRY_ASSERT (utf8_ptr != NULL); \
jmem_heap_free_block ((void *) utf8_ptr, utf8_str_size); \
}
/* ecma-helpers-value.c */
extern bool ecma_is_value_direct (ecma_value_t) __attr_pure___;
extern bool ecma_is_value_simple (ecma_value_t) __attr_pure___;
extern bool ecma_is_value_empty (ecma_value_t) __attr_pure___;
extern bool ecma_is_value_undefined (ecma_value_t) __attr_pure___;
extern bool ecma_is_value_null (ecma_value_t) __attr_pure___;
extern bool ecma_is_value_boolean (ecma_value_t) __attr_pure___;
extern bool ecma_is_value_true (ecma_value_t) __attr_pure___;
extern bool ecma_is_value_false (ecma_value_t) __attr_pure___;
extern bool ecma_is_value_array_hole (ecma_value_t) __attr_pure___;
extern bool ecma_is_value_integer_number (ecma_value_t) __attr_pure___;
extern bool ecma_are_values_integer_numbers (ecma_value_t, ecma_value_t) __attr_pure___;
extern bool ecma_is_value_float_number (ecma_value_t) __attr_pure___;
extern bool ecma_is_value_number (ecma_value_t) __attr_pure___;
extern bool ecma_is_value_string (ecma_value_t) __attr_pure___;
extern bool ecma_is_value_object (ecma_value_t) __attr_pure___;
extern void ecma_check_value_type_is_spec_defined (ecma_value_t);
extern ecma_value_t ecma_make_simple_value (const ecma_simple_value_t value) __attr_const___;
extern ecma_value_t ecma_make_boolean_value (bool) __attr_const___;
extern ecma_value_t ecma_make_integer_value (ecma_integer_value_t) __attr_const___;
extern ecma_value_t ecma_make_nan_value (void);
extern ecma_value_t ecma_make_number_value (ecma_number_t);
extern ecma_value_t ecma_make_int32_value (int32_t);
extern ecma_value_t ecma_make_uint32_value (uint32_t);
extern ecma_value_t ecma_make_string_value (const ecma_string_t *);
extern ecma_value_t ecma_make_object_value (const ecma_object_t *);
extern ecma_value_t ecma_make_error_value (ecma_value_t);
extern ecma_value_t ecma_make_error_obj_value (const ecma_object_t *);
extern ecma_integer_value_t ecma_get_integer_from_value (ecma_value_t) __attr_pure___;
extern ecma_number_t ecma_get_float_from_value (ecma_value_t) __attr_pure___;
extern ecma_number_t ecma_get_number_from_value (ecma_value_t) __attr_pure___;
extern uint32_t ecma_get_uint32_from_value (ecma_value_t) __attr_pure___;
extern ecma_string_t *ecma_get_string_from_value (ecma_value_t) __attr_pure___;
extern ecma_object_t *ecma_get_object_from_value (ecma_value_t) __attr_pure___;
extern ecma_value_t ecma_get_value_from_error_value (ecma_value_t) __attr_pure___;
extern ecma_value_t ecma_invert_boolean_value (ecma_value_t) __attr_pure___;
extern ecma_value_t ecma_copy_value (ecma_value_t);
extern ecma_value_t ecma_fast_copy_value (ecma_value_t);
extern ecma_value_t ecma_copy_value_if_not_object (ecma_value_t);
extern ecma_value_t ecma_update_float_number (ecma_value_t, ecma_number_t);
extern void ecma_value_assign_value (ecma_value_t *, ecma_value_t);
extern void ecma_value_assign_number (ecma_value_t *, ecma_number_t);
extern void ecma_value_assign_uint32 (ecma_value_t *, uint32_t);
extern void ecma_free_value (ecma_value_t);
extern void ecma_fast_free_value (ecma_value_t);
extern void ecma_free_value_if_not_object (ecma_value_t);
/* ecma-helpers-string.c */
extern ecma_string_t *ecma_new_ecma_string_from_utf8 (const lit_utf8_byte_t *, lit_utf8_size_t);
extern ecma_string_t *ecma_new_ecma_string_from_code_unit (ecma_char_t);
extern ecma_string_t *ecma_new_ecma_string_from_uint32 (uint32_t);
extern ecma_string_t *ecma_new_ecma_string_from_number (ecma_number_t);
extern ecma_string_t *ecma_new_ecma_string_from_magic_string_id (lit_magic_string_id_t);
extern ecma_string_t *ecma_new_ecma_string_from_magic_string_ex_id (lit_magic_string_ex_id_t);
extern ecma_string_t *ecma_new_ecma_length_string ();
extern ecma_string_t *ecma_concat_ecma_strings (ecma_string_t *, ecma_string_t *);
extern void ecma_ref_ecma_string (ecma_string_t *);
extern void ecma_deref_ecma_string (ecma_string_t *);
extern ecma_number_t ecma_string_to_number (const ecma_string_t *);
extern bool ecma_string_get_array_index (const ecma_string_t *, uint32_t *);
extern lit_utf8_size_t __attr_return_value_should_be_checked___
ecma_string_copy_to_utf8_buffer (const ecma_string_t *, lit_utf8_byte_t *, lit_utf8_size_t);
extern void ecma_string_to_utf8_bytes (const ecma_string_t *, lit_utf8_byte_t *, lit_utf8_size_t);
extern const lit_utf8_byte_t *ecma_string_raw_chars (const ecma_string_t *, lit_utf8_size_t *, bool *);
extern void ecma_init_ecma_string_from_uint32 (ecma_string_t *, uint32_t);
extern void ecma_init_ecma_length_string (ecma_string_t *);
extern bool ecma_string_is_empty (const ecma_string_t *);
extern bool ecma_string_is_length (const ecma_string_t *);
extern bool ecma_compare_ecma_strings_equal_hashes (const ecma_string_t *, const ecma_string_t *);
extern bool ecma_compare_ecma_strings (const ecma_string_t *, const ecma_string_t *);
extern bool ecma_compare_ecma_strings_relational (const ecma_string_t *, const ecma_string_t *);
extern ecma_length_t ecma_string_get_length (const ecma_string_t *);
extern lit_utf8_size_t ecma_string_get_size (const ecma_string_t *);
extern ecma_char_t ecma_string_get_char_at_pos (const ecma_string_t *, ecma_length_t);
extern ecma_string_t *ecma_get_magic_string (lit_magic_string_id_t);
extern ecma_string_t *ecma_get_magic_string_ex (lit_magic_string_ex_id_t);
extern bool ecma_is_string_magic (const ecma_string_t *, lit_magic_string_id_t *);
extern lit_string_hash_t ecma_string_hash (const ecma_string_t *);
extern ecma_string_t *ecma_string_substr (const ecma_string_t *, ecma_length_t, ecma_length_t);
extern ecma_string_t *ecma_string_trim (const ecma_string_t *);
/* ecma-helpers-number.c */
extern ecma_number_t ecma_number_make_nan (void);
extern ecma_number_t ecma_number_make_infinity (bool);
extern bool ecma_number_is_nan (ecma_number_t);
extern bool ecma_number_is_negative (ecma_number_t);
extern bool ecma_number_is_zero (ecma_number_t);
extern bool ecma_number_is_infinity (ecma_number_t);
extern int32_t
ecma_number_get_fraction_and_exponent (ecma_number_t, uint64_t *, int32_t *);
extern ecma_number_t
ecma_number_make_normal_positive_from_fraction_and_exponent (uint64_t, int32_t);
extern ecma_number_t
ecma_number_make_from_sign_mantissa_and_exponent (bool, uint64_t, int32_t);
extern ecma_number_t ecma_number_get_prev (ecma_number_t);
extern ecma_number_t ecma_number_get_next (ecma_number_t);
extern ecma_number_t ecma_number_negate (ecma_number_t);
extern ecma_number_t ecma_number_trunc (ecma_number_t);
extern ecma_number_t ecma_number_calc_remainder (ecma_number_t, ecma_number_t);
extern ecma_number_t ecma_number_add (ecma_number_t, ecma_number_t);
extern ecma_number_t ecma_number_substract (ecma_number_t, ecma_number_t);
extern ecma_number_t ecma_number_multiply (ecma_number_t, ecma_number_t);
extern ecma_number_t ecma_number_divide (ecma_number_t, ecma_number_t);
extern lit_utf8_size_t ecma_number_to_decimal (ecma_number_t, lit_utf8_byte_t *, int32_t *);
/* ecma-helpers-values-collection.c */
extern ecma_collection_header_t *ecma_new_values_collection (const ecma_value_t[], ecma_length_t, bool);
extern void ecma_free_values_collection (ecma_collection_header_t *, bool);
extern void ecma_append_to_values_collection (ecma_collection_header_t *, ecma_value_t, bool);
extern void ecma_remove_last_value_from_values_collection (ecma_collection_header_t *);
extern ecma_collection_header_t *ecma_new_strings_collection (ecma_string_t *[], ecma_length_t);
/**
* Context of ecma values' collection iterator
*/
typedef struct
{
ecma_collection_header_t *header_p; /**< collection header */
jmem_cpointer_t next_chunk_cp; /**< compressed pointer to next chunk */
ecma_length_t current_index; /**< index of current element */
const ecma_value_t *current_value_p; /**< pointer to current element */
const ecma_value_t *current_chunk_beg_p; /**< pointer to beginning of current chunk's data */
const ecma_value_t *current_chunk_end_p; /**< pointer to place right after the end of current chunk's data */
} ecma_collection_iterator_t;
extern void
ecma_collection_iterator_init (ecma_collection_iterator_t *, ecma_collection_header_t *);
extern bool
ecma_collection_iterator_next (ecma_collection_iterator_t *);
/* ecma-helpers.c */
extern ecma_object_t *ecma_create_object (ecma_object_t *, bool, bool, ecma_object_type_t);
extern ecma_object_t *ecma_create_decl_lex_env (ecma_object_t *);
extern ecma_object_t *ecma_create_object_lex_env (ecma_object_t *, ecma_object_t *, bool);
extern bool ecma_is_lexical_environment (const ecma_object_t *) __attr_pure___;
extern bool ecma_get_object_extensible (const ecma_object_t *) __attr_pure___;
extern void ecma_set_object_extensible (ecma_object_t *, bool);
extern ecma_object_type_t ecma_get_object_type (const ecma_object_t *) __attr_pure___;
extern void ecma_set_object_type (ecma_object_t *, ecma_object_type_t);
extern ecma_object_t *ecma_get_object_prototype (const ecma_object_t *) __attr_pure___;
extern bool ecma_get_object_is_builtin (const ecma_object_t *) __attr_pure___;
extern void ecma_set_object_is_builtin (ecma_object_t *);
extern ecma_lexical_environment_type_t ecma_get_lex_env_type (const ecma_object_t *) __attr_pure___;
extern ecma_object_t *ecma_get_lex_env_outer_reference (const ecma_object_t *) __attr_pure___;
extern ecma_property_header_t *ecma_get_property_list (const ecma_object_t *) __attr_pure___;
extern ecma_object_t *ecma_get_lex_env_binding_object (const ecma_object_t *) __attr_pure___;
extern bool ecma_get_lex_env_provide_this (const ecma_object_t *) __attr_pure___;
extern ecma_property_t *ecma_create_internal_property (ecma_object_t *, ecma_internal_property_id_t);
extern ecma_property_t *ecma_find_internal_property (ecma_object_t *, ecma_internal_property_id_t);
extern ecma_property_t *ecma_get_internal_property (ecma_object_t *, ecma_internal_property_id_t);
extern ecma_property_t *
ecma_create_named_data_property (ecma_object_t *, ecma_string_t *, uint8_t);
extern ecma_property_t *
ecma_create_named_accessor_property (ecma_object_t *, ecma_string_t *, ecma_object_t *, ecma_object_t *, uint8_t);
extern ecma_property_t *
ecma_find_named_property (ecma_object_t *, ecma_string_t *);
extern ecma_property_t *
ecma_get_named_property (ecma_object_t *, ecma_string_t *);
extern ecma_property_t *
ecma_get_named_data_property (ecma_object_t *, ecma_string_t *);
extern void ecma_free_property (ecma_object_t *, ecma_string_t *, ecma_property_t *);
extern void ecma_delete_property (ecma_object_t *, ecma_property_t *);
extern ecma_value_t ecma_get_named_data_property_value (const ecma_property_t *);
extern void ecma_set_named_data_property_value (ecma_property_t *, ecma_value_t);
extern void ecma_named_data_property_assign_value (ecma_object_t *, ecma_property_t *, ecma_value_t);
extern ecma_value_t ecma_get_internal_property_value (const ecma_property_t *);
extern void ecma_set_internal_property_value (ecma_property_t *, ecma_value_t);
extern ecma_object_t *ecma_get_named_accessor_property_getter (const ecma_property_t *);
extern ecma_object_t *ecma_get_named_accessor_property_setter (const ecma_property_t *);
extern void ecma_set_named_accessor_property_getter (ecma_object_t *, ecma_property_t *, ecma_object_t *);
extern void ecma_set_named_accessor_property_setter (ecma_object_t *, ecma_property_t *, ecma_object_t *);
extern bool ecma_is_property_writable (ecma_property_t *);
extern void ecma_set_property_writable_attr (ecma_property_t *, bool);
extern bool ecma_is_property_enumerable (ecma_property_t *);
extern void ecma_set_property_enumerable_attr (ecma_property_t *, bool);
extern bool ecma_is_property_configurable (ecma_property_t *);
extern void ecma_set_property_configurable_attr (ecma_property_t *, bool);
extern bool ecma_is_property_lcached (ecma_property_t *);
extern void ecma_set_property_lcached (ecma_property_t *, bool);
extern ecma_property_descriptor_t ecma_make_empty_property_descriptor (void);
extern void ecma_free_property_descriptor (ecma_property_descriptor_t *);
extern ecma_property_descriptor_t ecma_get_property_descriptor_from_property (ecma_property_t *);
extern ecma_property_t *ecma_get_next_property_pair (ecma_property_pair_t *);
extern void ecma_bytecode_ref (ecma_compiled_code_t *);
extern void ecma_bytecode_deref (ecma_compiled_code_t *);
/* ecma-helpers-external-pointers.c */
extern bool
ecma_create_external_pointer_property (ecma_object_t *, ecma_internal_property_id_t, ecma_external_pointer_t);
extern bool
ecma_get_external_pointer_value (ecma_object_t *, ecma_internal_property_id_t, ecma_external_pointer_t *);
extern void
ecma_free_external_pointer_in_property (ecma_property_t *);
/* ecma-helpers-conversion.c */
extern ecma_number_t ecma_utf8_string_to_number (const lit_utf8_byte_t *, lit_utf8_size_t);
extern lit_utf8_size_t ecma_uint32_to_utf8_string (uint32_t, lit_utf8_byte_t *, lit_utf8_size_t);
extern uint32_t ecma_number_to_uint32 (ecma_number_t);
extern int32_t ecma_number_to_int32 (ecma_number_t);
extern lit_utf8_size_t ecma_number_to_utf8_string (ecma_number_t, lit_utf8_byte_t *, lit_utf8_size_t);
/* ecma-helpers-errol.c */
extern lit_utf8_size_t ecma_errol0_dtoa (double, lit_utf8_byte_t *, int32_t *);
/**
* @}
* @}
*/
#endif /* !ECMA_HELPERS_H */
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