90 lines
2.9 KiB
C++
90 lines
2.9 KiB
C++
/*
|
|
*******************************************************************************
|
|
* 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__
|