Dániel Bátyai
9860d66a56
Related to #4186. Some notable changes: - The term 'Error' now strictly refers to native Error objects defined in the ECMA standard, which are ordinary objects. All other uses of 'error' or 'error reference' where the term refers to a thrown value is now called 'exception'. - Simplified the naming scheme of many String API functions. These functions will now also take an 'encoding' argument to specify the desired encoding in which to operate. - Removed the substring-copy-to-buffer functions. These functions behaved awkwardly, as they use character index to specify the start/end positions, and were mostly used incorrectly with byte offsets instead. The functionality can still be replicated with other functions if necessary. - String-to-buffer functions will no longer fail if the buffer is not sufficiently large, the string will instead be cropped. - Fixed the usage of the '_sz' prefix in many API functions. The term 'sz' means zero-terminated string in hungarian notation, this was used incorrectly in many cases. - Renamed most of the public API functions to have shorter, more on-point names, rather than the often too long descriptive names. Functions are now also grouped by the type of value they operate on, where this makes sense. JerryScript-DCO-1.0-Signed-off-by: Dániel Bátyai dbatyai@inf.u-szeged.hu
115 lines
2.9 KiB
C
115 lines
2.9 KiB
C
/* Copyright JS Foundation and other contributors, http://js.foundation
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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 ECMA_LINE_INFO_H
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#define ECMA_LINE_INFO_H
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/** \addtogroup ecma ECMA
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* @{
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*
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* \addtogroup ecmalineinfo Line info
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* @{
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*/
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#if JERRY_LINE_INFO
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#include "ecma-globals.h"
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/**
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* Increase the current value of line or column.
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*/
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#define ECMA_LINE_INFO_INCREASE 0x0
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/**
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* Decrease the current value of line or column.
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*/
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#define ECMA_LINE_INFO_DECREASE 0x1
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/**
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* Line update is present.
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*/
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#define ECMA_LINE_INFO_HAS_LINE 0x1
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/**
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* A default value for columns after a line update.
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*/
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#define ECMA_LINE_INFO_COLUMN_DEFAULT 127
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/**
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* Vlq encoding: flag which is set for all bytes except the last one.
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*/
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#define ECMA_LINE_INFO_VLQ_CONTINUE 0x80
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/**
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* Vlq encoding: mask to decode the number fragment.
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*/
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#define ECMA_LINE_INFO_VLQ_MASK 0x7f
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/**
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* Vlq encoding: number of bits stored in a byte.
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*/
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#define ECMA_LINE_INFO_VLQ_SHIFT 7
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/**
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* Small encoding: a value which represents a two byte long number.
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*/
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#define ECMA_LINE_INFO_ENCODE_TWO_BYTE (UINT8_MAX - 1)
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/**
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* Small encoding: minimum value of an encoded two byte long number.
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*/
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#define ECMA_LINE_INFO_ENCODE_TWO_BYTE_MIN (UINT8_MAX - 1)
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/**
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* Small encoding: a value which represents a three byte long number.
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*/
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#define ECMA_LINE_INFO_ENCODE_VLQ UINT8_MAX
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/**
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* Small encoding: minimum value of an encoded three byte long number.
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*/
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#define ECMA_LINE_INFO_ENCODE_VLQ_MIN (ECMA_LINE_INFO_ENCODE_TWO_BYTE_MIN + UINT8_MAX + 1)
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/**
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* Maximum number of line/column entries stored in a stream.
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*/
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#define ECMA_LINE_INFO_STREAM_VALUE_COUNT_MAX 48
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/**
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* Minimum size of a stream (except the last one).
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*/
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#define ECMA_LINE_INFO_STREAM_SIZE_MIN ((2 * ECMA_LINE_INFO_STREAM_VALUE_COUNT_MAX) - 1)
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/* Helper functions for parser/js/js-parser-line-info-create.c. */
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uint32_t ecma_line_info_decode_vlq (uint8_t **buffer_p);
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uint32_t ecma_line_info_difference_update (uint32_t current_value, uint32_t difference_value);
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/* General functions. */
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void ecma_line_info_free (uint8_t *line_info_p);
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void ecma_line_info_get (uint8_t *line_info_p, uint32_t offset, jerry_frame_location_t *location_p);
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#if JERRY_PARSER_DUMP_BYTE_CODE
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void ecma_line_info_dump (uint8_t *line_info_p);
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#endif /* JERRY_PARSER_DUMP_BYTE_CODE */
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#endif /* ECMA_LINE_INFO_H */
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/**
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* @}
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* @}
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*/
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#endif /* !ECMA_LINE_INFO_H */
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