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// © 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.
*
* The line, offset, and context fields are optional; parsing * engines may choose not to use to use them. * *
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: * *
* 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 ** *
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