| | 1 | /* |
| | 2 | ******************************************************************************* |
| | 3 | * Copyright (C) 2011, International Business Machines |
| | 4 | * Corporation and others. All Rights Reserved. |
| | 5 | ******************************************************************************* |
| | 6 | * file name: patternprops.h |
| | 7 | * encoding: US-ASCII |
| | 8 | * tab size: 8 (not used) |
| | 9 | * indentation:4 |
| | 10 | * |
| | 11 | * created on: 2011mar13 |
| | 12 | * created by: Markus W. Scherer |
| | 13 | */ |
| | 14 | |
| | 15 | #ifndef __PATTERNPROPS_H__ |
| | 16 | #define __PATTERNPROPS_H__ |
| | 17 | |
| | 18 | #include "unicode/utypes.h" |
| | 19 | |
| | 20 | U_NAMESPACE_BEGIN |
| | 21 | |
| | 22 | /** |
| | 23 | * Implements the immutable Unicode properties Pattern_Syntax and Pattern_White_Space. |
| | 24 | * Hardcodes these properties, does not load data, does not depend on other ICU classes. |
| | 25 | * <p> |
| | 26 | * Note: Both properties include ASCII as well as non-ASCII, non-Latin-1 code points, |
| | 27 | * and both properties only include BMP code points (no supplementary ones). |
| | 28 | * Pattern_Syntax includes some unassigned code points. |
| | 29 | * <p> |
| | 30 | * [:Pattern_White_Space:] = |
| | 31 | * [\u0009-\u000D\ \u0085\u200E\u200F\u2028\u2029] |
| | 32 | * <p> |
| | 33 | * [:Pattern_Syntax:] = |
| | 34 | * [!-/\:-@\[-\^`\{-~\u00A1-\u00A7\u00A9\u00AB\u00AC\u00AE |
| | 35 | * \u00B0\u00B1\u00B6\u00BB\u00BF\u00D7\u00F7 |
| | 36 | * \u2010-\u2027\u2030-\u203E\u2041-\u2053\u2055-\u205E |
| | 37 | * \u2190-\u245F\u2500-\u2775\u2794-\u2BFF\u2E00-\u2E7F |
| | 38 | * \u3001-\u3003\u3008-\u3020\u3030\uFD3E\uFD3F\uFE45\uFE46] |
| | 39 | * @author mscherer |
| | 40 | */ |
| | 41 | class U_COMMON_API PatternProps { |
| | 42 | public: |
| | 43 | /** |
| | 44 | * @return TRUE if c is a Pattern_Syntax code point. |
| | 45 | */ |
| | 46 | static UBool isSyntax(UChar32 c); |
| | 47 | |
| | 48 | /** |
| | 49 | * @return TRUE if c is a Pattern_Syntax or Pattern_White_Space code point. |
| | 50 | */ |
| | 51 | static UBool isSyntaxOrWhiteSpace(UChar32 c); |
| | 52 | |
| | 53 | /** |
| | 54 | * @return TRUE if c is a Pattern_White_Space character. |
| | 55 | */ |
| | 56 | static UBool isWhiteSpace(UChar32 c); |
| | 57 | |
| | 58 | /** |
| | 59 | * Skips over Pattern_White_Space starting at s. |
| | 60 | * @return The smallest pointer at or after s with a non-white space character. |
| | 61 | */ |
| | 62 | static const UChar *skipWhiteSpace(const UChar *s, int32_t length); |
| | 63 | |
| | 64 | /** |
| | 65 | * @return s except with leading and trailing Pattern_White_Space removed and length adjusted. |
| | 66 | */ |
| | 67 | static const UChar *trimWhiteSpace(const UChar *s, int32_t &length); |
| | 68 | |
| | 69 | /** |
| | 70 | * Tests whether the string contains a "pattern identifier", that is, |
| | 71 | * whether it contains only non-Pattern_White_Space, non-Pattern_Syntax characters. |
| | 72 | * @return TRUE if there are no Pattern_White_Space or Pattern_Syntax characters in s. |
| | 73 | */ |
| | 74 | static UBool isIdentifier(const UChar *s, int32_t length); |
| | 75 | |
| | 76 | /** |
| | 77 | * Skips over a "pattern identifier" starting at index s. |
| | 78 | * @return The smallest pointer at or after s with |
| | 79 | * a Pattern_White_Space or Pattern_Syntax character. |
| | 80 | */ |
| | 81 | static const UChar *skipIdentifier(const UChar *s, int32_t length); |
| | 82 | |
| | 83 | private: |
| | 84 | PatternProps(); // no constructor: all static methods |
| | 85 | }; |
| | 86 | |
| | 87 | U_NAMESPACE_END |
| | 88 | |
| | 89 | #endif // __PATTERNPROPS_H__ |
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