94 lines
3.1 KiB
C++
94 lines
3.1 KiB
C++
// © 2016 and later: Unicode, Inc. and others.
|
|
// License & terms of use: http://www.unicode.org/copyright.html
|
|
/*
|
|
**********************************************************************
|
|
* Copyright (C) 1999-2005, International Business Machines
|
|
* Corporation and others. All Rights Reserved.
|
|
**********************************************************************
|
|
* Date Name Description
|
|
* 03/14/00 aliu Creation.
|
|
* 06/27/00 aliu Change from C++ class to C struct
|
|
**********************************************************************
|
|
*/
|
|
#ifndef PARSEERR_H
|
|
#define PARSEERR_H
|
|
|
|
#include "unicode/utypes.h"
|
|
|
|
|
|
/**
|
|
* \file
|
|
* \brief C API: Parse Error Information
|
|
*/
|
|
/**
|
|
* The capacity of the context strings in UParseError.
|
|
* @stable ICU 2.0
|
|
*/
|
|
enum { U_PARSE_CONTEXT_LEN = 16 };
|
|
|
|
/**
|
|
* A UParseError struct is used to returned detailed information about
|
|
* parsing errors. It is used by ICU parsing engines that parse long
|
|
* rules, patterns, or programs, where the text being parsed is long
|
|
* enough that more information than a UErrorCode is needed to
|
|
* localize the error.
|
|
*
|
|
* <p>The line, offset, and context fields are optional; parsing
|
|
* engines may choose not to use to use them.
|
|
*
|
|
* <p>The preContext and postContext strings include some part of the
|
|
* context surrounding the error. If the source text is "let for=7"
|
|
* and "for" is the error (e.g., because it is a reserved word), then
|
|
* some examples of what a parser might produce are the following:
|
|
*
|
|
* <pre>
|
|
* preContext postContext
|
|
* "" "" The parser does not support context
|
|
* "let " "=7" Pre- and post-context only
|
|
* "let " "for=7" Pre- and post-context and error text
|
|
* "" "for" Error text only
|
|
* </pre>
|
|
*
|
|
* <p>Examples of engines which use UParseError (or may use it in the
|
|
* future) are Transliterator, RuleBasedBreakIterator, and
|
|
* RegexPattern.
|
|
*
|
|
* @stable ICU 2.0
|
|
*/
|
|
typedef struct UParseError {
|
|
|
|
/**
|
|
* The line on which the error occurred. If the parser uses this
|
|
* field, it sets it to the line number of the source text line on
|
|
* which the error appears, which will be a value >= 1. If the
|
|
* parse does not support line numbers, the value will be <= 0.
|
|
* @stable ICU 2.0
|
|
*/
|
|
int32_t line;
|
|
|
|
/**
|
|
* The character offset to the error. If the line field is >= 1,
|
|
* then this is the offset from the start of the line. Otherwise,
|
|
* this is the offset from the start of the text. If the parser
|
|
* does not support this field, it will have a value < 0.
|
|
* @stable ICU 2.0
|
|
*/
|
|
int32_t offset;
|
|
|
|
/**
|
|
* Textual context before the error. Null-terminated. The empty
|
|
* string if not supported by parser.
|
|
* @stable ICU 2.0
|
|
*/
|
|
UChar preContext[U_PARSE_CONTEXT_LEN];
|
|
|
|
/**
|
|
* The error itself and/or textual context after the error.
|
|
* Null-terminated. The empty string if not supported by parser.
|
|
* @stable ICU 2.0
|
|
*/
|
|
UChar postContext[U_PARSE_CONTEXT_LEN];
|
|
|
|
} UParseError;
|
|
|
|
#endif
|