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Issue 18836004: Move ICU headers from public/{common,i18n} to source/{common,i18n} (Closed) Base URL: https://chromium.googlesource.com/chromium/deps/icu46.git@master
Patch Set: same as ps #3. retry uploading Created 7 years, 5 months ago
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1 /*
2 **********************************************************************
3 * Copyright (C) 1999-2005, International Business Machines
4 * Corporation and others. All Rights Reserved.
5 **********************************************************************
6 * Date Name Description
7 * 03/14/00 aliu Creation.
8 * 06/27/00 aliu Change from C++ class to C struct
9 **********************************************************************
10 */
11 #ifndef PARSEERR_H
12 #define PARSEERR_H
13
14 #include "unicode/utypes.h"
15
16
17 /**
18 * \file
19 * \brief C API: Parse Error Information
20 */
21 /**
22 * The capacity of the context strings in UParseError.
23 * @stable ICU 2.0
24 */
25 enum { U_PARSE_CONTEXT_LEN = 16 };
26
27 /**
28 * A UParseError struct is used to returned detailed information about
29 * parsing errors. It is used by ICU parsing engines that parse long
30 * rules, patterns, or programs, where the text being parsed is long
31 * enough that more information than a UErrorCode is needed to
32 * localize the error.
33 *
34 * <p>The line, offset, and context fields are optional; parsing
35 * engines may choose not to use to use them.
36 *
37 * <p>The preContext and postContext strings include some part of the
38 * context surrounding the error. If the source text is "let for=7"
39 * and "for" is the error (e.g., because it is a reserved word), then
40 * some examples of what a parser might produce are the following:
41 *
42 * <pre>
43 * preContext postContext
44 * "" "" The parser does not support context
45 * "let " "=7" Pre- and post-context only
46 * "let " "for=7" Pre- and post-context and error text
47 * "" "for" Error text only
48 * </pre>
49 *
50 * <p>Examples of engines which use UParseError (or may use it in the
51 * future) are Transliterator, RuleBasedBreakIterator, and
52 * RegexPattern.
53 *
54 * @stable ICU 2.0
55 */
56 typedef struct UParseError {
57
58 /**
59 * The line on which the error occured. If the parser uses this
60 * field, it sets it to the line number of the source text line on
61 * which the error appears, which will be be a value >= 1. If the
62 * parse does not support line numbers, the value will be <= 0.
63 * @stable ICU 2.0
64 */
65 int32_t line;
66
67 /**
68 * The character offset to the error. If the line field is >= 1,
69 * then this is the offset from the start of the line. Otherwise,
70 * this is the offset from the start of the text. If the parser
71 * does not support this field, it will have a value < 0.
72 * @stable ICU 2.0
73 */
74 int32_t offset;
75
76 /**
77 * Textual context before the error. Null-terminated. The empty
78 * string if not supported by parser.
79 * @stable ICU 2.0
80 */
81 UChar preContext[U_PARSE_CONTEXT_LEN];
82
83 /**
84 * The error itself and/or textual context after the error.
85 * Null-terminated. The empty string if not supported by parser.
86 * @stable ICU 2.0
87 */
88 UChar postContext[U_PARSE_CONTEXT_LEN];
89
90 } UParseError;
91
92 #endif
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