/* ******************************************************************************* * Copyright (C) 2011, International Business Machines * Corporation and others. All Rights Reserved. ******************************************************************************* * file name: patternprops.h * encoding: US-ASCII * tab size: 8 (not used) * indentation:4 * * created on: 2011mar13 * created by: Markus W. Scherer */ #ifndef __PATTERNPROPS_H__ #define __PATTERNPROPS_H__ #include "unicode/utypes.h" U_NAMESPACE_BEGIN /** * Implements the immutable Unicode properties Pattern_Syntax and Pattern_White_Space. * Hardcodes these properties, does not load data, does not depend on other ICU classes. * <p> * Note: Both properties include ASCII as well as non-ASCII, non-Latin-1 code points, * and both properties only include BMP code points (no supplementary ones). * Pattern_Syntax includes some unassigned code points. * <p> * [:Pattern_White_Space:] = * [\u0009-\u000D\ \u0085\u200E\u200F\u2028\u2029] * <p> * [:Pattern_Syntax:] = * [!-/\:-@\[-\^`\{-~\u00A1-\u00A7\u00A9\u00AB\u00AC\u00AE * \u00B0\u00B1\u00B6\u00BB\u00BF\u00D7\u00F7 * \u2010-\u2027\u2030-\u203E\u2041-\u2053\u2055-\u205E * \u2190-\u245F\u2500-\u2775\u2794-\u2BFF\u2E00-\u2E7F * \u3001-\u3003\u3008-\u3020\u3030\uFD3E\uFD3F\uFE45\uFE46] * @author mscherer */ class U_COMMON_API PatternProps { public: /** * @return TRUE if c is a Pattern_Syntax code point. */ static UBool isSyntax(UChar32 c); /** * @return TRUE if c is a Pattern_Syntax or Pattern_White_Space code point. */ static UBool isSyntaxOrWhiteSpace(UChar32 c); /** * @return TRUE if c is a Pattern_White_Space character. */ static UBool isWhiteSpace(UChar32 c); /** * Skips over Pattern_White_Space starting at s. * @return The smallest pointer at or after s with a non-white space character. */ static const UChar *skipWhiteSpace(const UChar *s, int32_t length); /** * @return s except with leading and trailing Pattern_White_Space removed and length adjusted. */ static const UChar *trimWhiteSpace(const UChar *s, int32_t &length); /** * Tests whether the string contains a "pattern identifier", that is, * whether it contains only non-Pattern_White_Space, non-Pattern_Syntax characters. * @return TRUE if there are no Pattern_White_Space or Pattern_Syntax characters in s. */ static UBool isIdentifier(const UChar *s, int32_t length); /** * Skips over a "pattern identifier" starting at index s. * @return The smallest pointer at or after s with * a Pattern_White_Space or Pattern_Syntax character. */ static const UChar *skipIdentifier(const UChar *s, int32_t length); private: PatternProps(); // no constructor: all static methods }; U_NAMESPACE_END #endif // __PATTERNPROPS_H__