[wxWidgets.git] / include / wx / unichar.h

///////////////////////////////////////////////////////////////////////////////
// Name:        wx/unichar.h
// Purpose:     wxUniChar and wxUniCharRef classes
// Author:      Vaclav Slavik
// Created:     2007-03-19
// RCS-ID:      $Id$
// Copyright:   (c) 2007 REA Elektronik GmbH
// Licence:     wxWindows licence
///////////////////////////////////////////////////////////////////////////////

#ifndef _WX_UNICHAR_H_
#define _WX_UNICHAR_H_

#include "wx/defs.h"
#include "wx/chartype.h"
#include "wx/stringimpl.h"

#ifndef wxWCHAR_T_IS_SEPARATE_TYPE
    // older versions of VC++ have wchar_t as typedef by default; this is
    // configurable, so we have to check which behaviour is enabled
    #if defined(__VISUALC__) && !defined(_NATIVE_WCHAR_T_DEFINED)
        #define wxWCHAR_T_IS_SEPARATE_TYPE 0
    #else
        #define wxWCHAR_T_IS_SEPARATE_TYPE 1
    #endif
#endif

// helper macro for doing something dependent on whether wchar_t is or isn't a
// typedef inside another macro
#if wxWCHAR_T_IS_SEPARATE_TYPE
    #define wxIF_WCHAR_T_TYPE(x) x
#else // !wxWCHAR_T_IS_SEPARATE_TYPE
    #define wxIF_WCHAR_T_TYPE(x)
#endif // wxWCHAR_T_IS_SEPARATE_TYPE/!wxWCHAR_T_IS_SEPARATE_TYPE

class WXDLLIMPEXP_BASE wxUniCharRef;
class WXDLLIMPEXP_BASE wxStringIteratorNode;

// This class represents single Unicode character. It can be converted to
// and from char or wchar_t and implements commonly used character operations.
class WXDLLIMPEXP_BASE wxUniChar
{
public:
    // NB: this is not wchar_t on purpose, it needs to represent the entire
    //     Unicode code points range and wchar_t may be too small for that
    //     (e.g. on Win32 where wchar_t* is encoded in UTF-16)
    typedef wxUint32 value_type;

    wxUniChar() : m_value(0) {}

    // Create the character from 8bit character value encoded in the current
    // locale's charset.
    wxUniChar(char c) { m_value = From8bit(c); }
    wxUniChar(unsigned char c) { m_value = From8bit((char)c); }

    // Create the character from a wchar_t character value.
#if wxWCHAR_T_IS_SEPARATE_TYPE
    wxUniChar(wchar_t c) { m_value = c; }
#endif

    wxUniChar(int c) { m_value = c; }
    wxUniChar(unsigned int c) { m_value = c; }
    wxUniChar(long int c) { m_value = c; }
    wxUniChar(unsigned long int c) { m_value = c; }
    wxUniChar(short int c) { m_value = c; }
    wxUniChar(unsigned short int c) { m_value = c; }

    wxUniChar(const wxUniCharRef& c);

    // Returns Unicode code point value of the character
    value_type GetValue() const { return m_value; }

#if wxUSE_UNICODE_UTF8
    // buffer for single UTF-8 character
    struct Utf8CharBuffer
    {
        char data[5];
        operator const char*() const { return data; }
    };

    // returns the character encoded as UTF-8
    // (NB: implemented in stringops.cpp)
    Utf8CharBuffer AsUTF8() const;
#endif // wxUSE_UNICODE_UTF8

    // Returns true if the character is an ASCII character:
    bool IsAscii() const { return m_value < 0x80; }

    // Conversions to char and wchar_t types: all of those are needed to be
    // able to pass wxUniChars to verious standard narrow and wide character
    // functions
    operator char() const { return To8bit(m_value); }
    operator unsigned char() const { return (unsigned char)To8bit(m_value); }
#if wxWCHAR_T_IS_SEPARATE_TYPE
    operator wchar_t() const { return m_value; }
#endif
    operator int() const { return m_value; }
    operator unsigned int() const { return m_value; }
    operator long int() const { return m_value; }
    operator unsigned long int() const { return m_value; }
    operator short int() const { return m_value; }
    operator unsigned short int() const { return m_value; }

    // We need this operator for the "*p" part of expressions like "for (
    // const_iterator p = begin() + nStart; *p; ++p )". In this case,
    // compilation would fail without it because the conversion to bool would
    // be ambiguous (there are all these int types conversions...). (And adding
    // operator unspecified_bool_type() would only makes the ambiguity worse.)
    operator bool() const { return m_value != 0; }
    bool operator!() const { return !((bool)*this); }

    // And this one is needed by some (not all, but not using ifdefs makes the
    // code easier) compilers to parse "str[0] && *p" successfully
    bool operator&&(bool v) const { return (bool)*this && v; }

    // Assignment operators:
    wxUniChar& operator=(const wxUniChar& c) { m_value = c.m_value; return *this; }
    wxUniChar& operator=(char c) { m_value = From8bit(c); return *this; }
    wxUniChar& operator=(unsigned char c) { m_value = From8bit((char)c); return *this; }
#if wxWCHAR_T_IS_SEPARATE_TYPE
    wxUniChar& operator=(wchar_t c) { m_value = c; return *this; }
#endif
    wxUniChar& operator=(int c) { m_value = c; return *this; }
    wxUniChar& operator=(unsigned int c) { m_value = c; return *this; }
    wxUniChar& operator=(long int c) { m_value = c; return *this; }
    wxUniChar& operator=(unsigned long int c) { m_value = c; return *this; }
    wxUniChar& operator=(short int c) { m_value = c; return *this; }
    wxUniChar& operator=(unsigned short int c) { m_value = c; return *this; }

    // Comparison operators:

    // define the given comparison operator for all the types
#define wxDEFINE_UNICHAR_OPERATOR(op)                                         \
    bool operator op(const wxUniChar& c) const { return m_value op c.m_value; }\
    bool operator op(char c) const { return m_value op From8bit(c); }         \
    bool operator op(unsigned char c) const { return m_value op From8bit((char)c); } \
    wxIF_WCHAR_T_TYPE( bool operator op(wchar_t c) const { return m_value op (value_type)c; } )    \
    bool operator op(int c) const { return m_value op (value_type)c; }        \
    bool operator op(unsigned int c) const { return m_value op (value_type)c; }        \
    bool operator op(short int c) const { return m_value op (value_type)c; }  \
    bool operator op(unsigned short int c) const { return m_value op (value_type)c; }  \
    bool operator op(long int c) const { return m_value op (value_type)c; }   \
    bool operator op(unsigned long int c) const { return m_value op (value_type)c; }

    wxFOR_ALL_COMPARISONS(wxDEFINE_UNICHAR_OPERATOR)

#undef wxDEFINE_UNICHAR_OPERATOR

    // this is needed for expressions like 'Z'-c
    int operator-(const wxUniChar& c) const { return m_value - c.m_value; }
    int operator-(char c) const { return m_value - From8bit(c); }
    int operator-(unsigned char c) const { return m_value - From8bit((char)c); }
    int operator-(wchar_t c) const { return m_value - (value_type)c; }


private:
    static value_type From8bit(char c);
    static char To8bit(value_type c);

private:
    value_type m_value;
};


// Writeable reference to a character in wxString.
//
// This class can be used in the same way wxChar is used, except that changing
// its value updates the underlying string object.
class WXDLLIMPEXP_BASE wxUniCharRef
{
private:
    typedef wxStringImpl::iterator iterator;

    // create the reference
#if wxUSE_UNICODE_UTF8
    wxUniCharRef(wxStringIteratorNode& node, iterator pos) : m_node(node), m_pos(pos) {}
#else
    wxUniCharRef(iterator pos) : m_pos(pos) {}
#endif

public:
    // NB: we have to make this public, because we don't have wxString
    //     declaration available here and so can't declare wxString::iterator
    //     as friend; so at least don't use a ctor but a static function
    //     that must be used explicitly (this is more than using 'explicit'
    //     keyword on ctor!):
#if wxUSE_UNICODE_UTF8
    static wxUniCharRef CreateForString(wxStringIteratorNode& node, iterator pos)
        { return wxUniCharRef(node, pos); }
#else
    static wxUniCharRef CreateForString(iterator pos)
        { return wxUniCharRef(pos); }
#endif

    wxUniChar::value_type GetValue() const { return UniChar().GetValue(); }

#if wxUSE_UNICODE_UTF8
    wxUniChar::Utf8CharBuffer AsUTF8() const { return UniChar().AsUTF8(); }
#endif // wxUSE_UNICODE_UTF8

    bool IsAscii() const { return UniChar().IsAscii(); }

    // Assignment operators:
#if wxUSE_UNICODE_UTF8
    wxUniCharRef& operator=(const wxUniChar& c);
#else
    wxUniCharRef& operator=(const wxUniChar& c) { *m_pos = c; return *this; }
#endif

    wxUniCharRef& operator=(const wxUniCharRef& c)
        { return *this = c.UniChar(); }

    wxUniCharRef& operator=(char c) { return *this = wxUniChar(c); }
    wxUniCharRef& operator=(unsigned char c) { return *this = wxUniChar(c); }
#if wxWCHAR_T_IS_SEPARATE_TYPE
    wxUniCharRef& operator=(wchar_t c) { return *this = wxUniChar(c); }
#endif
    wxUniCharRef& operator=(int c) { return *this = wxUniChar(c); }
    wxUniCharRef& operator=(unsigned int c) { return *this = wxUniChar(c); }
    wxUniCharRef& operator=(short int c) { return *this = wxUniChar(c); }
    wxUniCharRef& operator=(unsigned short int c) { return *this = wxUniChar(c); }
    wxUniCharRef& operator=(long int c) { return *this = wxUniChar(c); }
    wxUniCharRef& operator=(unsigned long int c) { return *this = wxUniChar(c); }

    // Conversions to the same types as wxUniChar is convertible too:
    operator char() const { return UniChar(); }
    operator unsigned char() const { return UniChar(); }
#if wxWCHAR_T_IS_SEPARATE_TYPE
    operator wchar_t() const { return UniChar(); }
#endif
    operator int() const { return UniChar(); }
    operator unsigned int() const { return UniChar(); }
    operator short int() const { return UniChar(); }
    operator unsigned short int() const { return UniChar(); }
    operator long int() const { return UniChar(); }
    operator unsigned long int() const { return UniChar(); }

    // see wxUniChar::operator bool etc. for explanation
    operator bool() const { return (bool)UniChar(); }
    bool operator!() const { return !UniChar(); }
    bool operator&&(bool v) const { return UniChar() && v; }

    // Comparison operators:
#define wxDEFINE_UNICHARREF_OPERATOR(op)                                      \
    bool operator op(const wxUniCharRef& c) const { return UniChar() op c.UniChar(); }\
    bool operator op(const wxUniChar& c) const { return UniChar() op c; }     \
    bool operator op(char c) const { return UniChar() op c; }                 \
    bool operator op(unsigned char c) const { return UniChar() op c; }        \
    wxIF_WCHAR_T_TYPE( bool operator op(wchar_t c) const { return UniChar() op c; } ) \
    bool operator op(int c) const { return UniChar() op c; }                  \
    bool operator op(unsigned int c) const { return UniChar() op c; }         \
    bool operator op(short int c) const { return UniChar() op c; }             \
    bool operator op(unsigned short int c) const { return UniChar() op c; }    \
    bool operator op(long int c) const { return UniChar() op c; }             \
    bool operator op(unsigned long int c) const { return UniChar() op c; }

    wxFOR_ALL_COMPARISONS(wxDEFINE_UNICHARREF_OPERATOR)

#undef wxDEFINE_UNICHARREF_OPERATOR

    // for expressions like c-'A':
    int operator-(const wxUniCharRef& c) const { return UniChar() - c.UniChar(); }
    int operator-(const wxUniChar& c) const { return UniChar() - c; }
    int operator-(char c) const { return UniChar() - c; }
    int operator-(unsigned char c) const { return UniChar() - c; }
    int operator-(wchar_t c) const { return UniChar() - c; }

private:
#if wxUSE_UNICODE_UTF8
    wxUniChar UniChar() const;
#else
    wxUniChar UniChar() const { return *m_pos; }
#endif

    friend class WXDLLIMPEXP_BASE wxUniChar;

private:
    // reference to the string and pointer to the character in string
#if wxUSE_UNICODE_UTF8
    wxStringIteratorNode& m_node;
#endif
    iterator m_pos;
};

inline wxUniChar::wxUniChar(const wxUniCharRef& c)
{
    m_value = c.UniChar().m_value;
}

// Comparison operators for the case when wxUniChar(Ref) is the second operand
// implemented in terms of member comparison functions

#define wxCMP_REVERSE(c1, c2, op) c2 op c1

wxDEFINE_COMPARISONS(char, const wxUniChar&, wxCMP_REVERSE)
wxDEFINE_COMPARISONS(char, const wxUniCharRef&, wxCMP_REVERSE)

wxDEFINE_COMPARISONS(wchar_t, const wxUniChar&, wxCMP_REVERSE)
wxDEFINE_COMPARISONS(wchar_t, const wxUniCharRef&, wxCMP_REVERSE)

wxDEFINE_COMPARISONS(const wxUniChar&, const wxUniCharRef&, wxCMP_REVERSE)

#undef wxCMP_REVERSE

// for expressions like c-'A':
inline int operator-(char c1, const wxUniCharRef& c2) { return -(c2 - c1); }
inline int operator-(const wxUniChar& c1, const wxUniCharRef& c2) { return -(c2 - c1); }
inline int operator-(wchar_t c1, const wxUniCharRef& c2) { return -(c2 - c1); }

#endif /* _WX_UNICHAR_H_ */
Commit	Line	Data
e3f6cbd9 VS	1	///////////////////////////////////////////////////////////////////////////////
	2	// Name: wx/unichar.h
	3	// Purpose: wxUniChar and wxUniCharRef classes
	4	// Author: Vaclav Slavik
	5	// Created: 2007-03-19
	6	// RCS-ID: $Id$
	7	// Copyright: (c) 2007 REA Elektronik GmbH
	8	// Licence: wxWindows licence
	9	///////////////////////////////////////////////////////////////////////////////
	10
	11	#ifndef _WX_UNICHAR_H_
	12	#define _WX_UNICHAR_H_
	13
dbecee02	14	#include "wx/defs.h"
e3f6cbd9	15	#include "wx/chartype.h"
a7ea63e2	16	#include "wx/stringimpl.h"
a962cdf4	17
21f0762a	18	#ifndef wxWCHAR_T_IS_SEPARATE_TYPE
4d62edfb VS	19	// older versions of VC++ have wchar_t as typedef by default; this is
	20	// configurable, so we have to check which behaviour is enabled
	21	#if defined(__VISUALC__) && !defined(_NATIVE_WCHAR_T_DEFINED)
	22	#define wxWCHAR_T_IS_SEPARATE_TYPE 0
	23	#else
	24	#define wxWCHAR_T_IS_SEPARATE_TYPE 1
21f0762a	25	#endif
436bb9f5 VZ	26	#endif
436bb9f5 VZ	27
21f0762a	28	// helper macro for doing something dependent on whether wchar_t is or isn't a
436bb9f5	29	// typedef inside another macro
4d62edfb	30	#if wxWCHAR_T_IS_SEPARATE_TYPE
21f0762a VS	31	#define wxIF_WCHAR_T_TYPE(x) x
	32	#else // !wxWCHAR_T_IS_SEPARATE_TYPE
	33	#define wxIF_WCHAR_T_TYPE(x)
	34	#endif // wxWCHAR_T_IS_SEPARATE_TYPE/!wxWCHAR_T_IS_SEPARATE_TYPE
153bc803	35
e3f6cbd9	36	class WXDLLIMPEXP_BASE wxUniCharRef;
b0c4d5d7	37	class WXDLLIMPEXP_BASE wxStringIteratorNode;
e3f6cbd9 VS	38
	39	// This class represents single Unicode character. It can be converted to
	40	// and from char or wchar_t and implements commonly used character operations.
	41	class WXDLLIMPEXP_BASE wxUniChar
	42	{
	43	public:
	44	// NB: this is not wchar_t on purpose, it needs to represent the entire
	45	// Unicode code points range and wchar_t may be too small for that
	46	// (e.g. on Win32 where wchar_t* is encoded in UTF-16)
dbecee02	47	typedef wxUint32 value_type;
e3f6cbd9 VS	48
	49	wxUniChar() : m_value(0) {}
	50
	51	// Create the character from 8bit character value encoded in the current
	52	// locale's charset.
	53	wxUniChar(char c) { m_value = From8bit(c); }
9f1b1b78	54	wxUniChar(unsigned char c) { m_value = From8bit((char)c); }
e3f6cbd9 VS	55
e3f6cbd9 VS	56	// Create the character from a wchar_t character value.
4d62edfb	57	#if wxWCHAR_T_IS_SEPARATE_TYPE
e3f6cbd9	58	wxUniChar(wchar_t c) { m_value = c; }
436bb9f5	59	#endif
e3f6cbd9	60
e3f6cbd9	61	wxUniChar(int c) { m_value = c; }
21f0762a	62	wxUniChar(unsigned int c) { m_value = c; }
4e5b3a4e	63	wxUniChar(long int c) { m_value = c; }
21f0762a VS	64	wxUniChar(unsigned long int c) { m_value = c; }
	65	wxUniChar(short int c) { m_value = c; }
	66	wxUniChar(unsigned short int c) { m_value = c; }
e3f6cbd9 VS	67
	68	wxUniChar(const wxUniCharRef& c);
	69
	70	// Returns Unicode code point value of the character
d1b7ed67	71	value_type GetValue() const { return m_value; }
e3f6cbd9	72
1fc10687 VS	73	#if wxUSE_UNICODE_UTF8
	74	// buffer for single UTF-8 character
	75	struct Utf8CharBuffer
	76	{
	77	char data[5];
	78	operator const char*() const { return data; }
	79	};
	80
	81	// returns the character encoded as UTF-8
	82	// (NB: implemented in stringops.cpp)
	83	Utf8CharBuffer AsUTF8() const;
	84	#endif // wxUSE_UNICODE_UTF8
	85
81727065 VS	86	// Returns true if the character is an ASCII character:
	87	bool IsAscii() const { return m_value < 0x80; }
	88
2a686bd3 VZ	89	// Conversions to char and wchar_t types: all of those are needed to be
	90	// able to pass wxUniChars to verious standard narrow and wide character
	91	// functions
e3f6cbd9	92	operator char() const { return To8bit(m_value); }
21f0762a	93	operator unsigned char() const { return (unsigned char)To8bit(m_value); }
4d62edfb	94	#if wxWCHAR_T_IS_SEPARATE_TYPE
e3f6cbd9	95	operator wchar_t() const { return m_value; }
21f0762a	96	#endif
e3f6cbd9	97	operator int() const { return m_value; }
153bc803	98	operator unsigned int() const { return m_value; }
21f0762a VS	99	operator long int() const { return m_value; }
	100	operator unsigned long int() const { return m_value; }
	101	operator short int() const { return m_value; }
	102	operator unsigned short int() const { return m_value; }
e3f6cbd9 VS	103
	104	// We need this operator for the "*p" part of expressions like "for (
	105	// const_iterator p = begin() + nStart; *p; ++p )". In this case,
	106	// compilation would fail without it because the conversion to bool would
	107	// be ambiguous (there are all these int types conversions...). (And adding
	108	// operator unspecified_bool_type() would only makes the ambiguity worse.)
	109	operator bool() const { return m_value != 0; }
	110	bool operator!() const { return !((bool)*this); }
8019a673 VZ	111
	112	// And this one is needed by some (not all, but not using ifdefs makes the
	113	// code easier) compilers to parse "str[0] && *p" successfully
e3f6cbd9	114	bool operator&&(bool v) const { return (bool)*this && v; }
e3f6cbd9 VS	115
	116	// Assignment operators:
	117	wxUniChar& operator=(const wxUniChar& c) { m_value = c.m_value; return *this; }
	118	wxUniChar& operator=(char c) { m_value = From8bit(c); return *this; }
db18be57	119	wxUniChar& operator=(unsigned char c) { m_value = From8bit((char)c); return *this; }
4d62edfb	120	#if wxWCHAR_T_IS_SEPARATE_TYPE
e3f6cbd9	121	wxUniChar& operator=(wchar_t c) { m_value = c; return *this; }
21f0762a	122	#endif
171d6132	123	wxUniChar& operator=(int c) { m_value = c; return *this; }
21f0762a	124	wxUniChar& operator=(unsigned int c) { m_value = c; return *this; }
4e5b3a4e	125	wxUniChar& operator=(long int c) { m_value = c; return *this; }
21f0762a VS	126	wxUniChar& operator=(unsigned long int c) { m_value = c; return *this; }
	127	wxUniChar& operator=(short int c) { m_value = c; return *this; }
	128	wxUniChar& operator=(unsigned short int c) { m_value = c; return *this; }
e3f6cbd9	129
fb52c2b6	130	// Comparison operators:
e3f6cbd9	131
fb52c2b6	132	// define the given comparison operator for all the types
98c4eb39	133	#define wxDEFINE_UNICHAR_OPERATOR(op) \
fb52c2b6 VZ	134	bool operator op(const wxUniChar& c) const { return m_value op c.m_value; }\
fb52c2b6 VZ	135	bool operator op(char c) const { return m_value op From8bit(c); } \
db18be57	136	bool operator op(unsigned char c) const { return m_value op From8bit((char)c); } \
21f0762a	137	wxIF_WCHAR_T_TYPE( bool operator op(wchar_t c) const { return m_value op (value_type)c; } ) \
db18be57	138	bool operator op(int c) const { return m_value op (value_type)c; } \
21f0762a VS	139	bool operator op(unsigned int c) const { return m_value op (value_type)c; } \
	140	bool operator op(short int c) const { return m_value op (value_type)c; } \
	141	bool operator op(unsigned short int c) const { return m_value op (value_type)c; } \
4e5b3a4e	142	bool operator op(long int c) const { return m_value op (value_type)c; } \
21f0762a	143	bool operator op(unsigned long int c) const { return m_value op (value_type)c; }
e3f6cbd9	144
fb52c2b6	145	wxFOR_ALL_COMPARISONS(wxDEFINE_UNICHAR_OPERATOR)
e3f6cbd9	146
fb52c2b6	147	#undef wxDEFINE_UNICHAR_OPERATOR
e3f6cbd9	148
fb52c2b6	149	// this is needed for expressions like 'Z'-c
e3f6cbd9 VS	150	int operator-(const wxUniChar& c) const { return m_value - c.m_value; }
e3f6cbd9 VS	151	int operator-(char c) const { return m_value - From8bit(c); }
db18be57	152	int operator-(unsigned char c) const { return m_value - From8bit((char)c); }
d1b7ed67	153	int operator-(wchar_t c) const { return m_value - (value_type)c; }
21f0762a	154
e3f6cbd9 VS	155
e3f6cbd9 VS	156	private:
d1b7ed67 VS	157	static value_type From8bit(char c);
d1b7ed67 VS	158	static char To8bit(value_type c);
e3f6cbd9 VS	159
e3f6cbd9 VS	160	private:
d1b7ed67	161	value_type m_value;
e3f6cbd9 VS	162	};
	163
	164
	165	// Writeable reference to a character in wxString.
	166	//
	167	// This class can be used in the same way wxChar is used, except that changing
	168	// its value updates the underlying string object.
	169	class WXDLLIMPEXP_BASE wxUniCharRef
	170	{
	171	private:
a962cdf4 VS	172	typedef wxStringImpl::iterator iterator;
a962cdf4 VS	173
e3f6cbd9	174	// create the reference
81727065	175	#if wxUSE_UNICODE_UTF8
b0c4d5d7	176	wxUniCharRef(wxStringIteratorNode& node, iterator pos) : m_node(node), m_pos(pos) {}
81727065	177	#else
a962cdf4	178	wxUniCharRef(iterator pos) : m_pos(pos) {}
81727065	179	#endif
e3f6cbd9 VS	180
	181	public:
	182	// NB: we have to make this public, because we don't have wxString
	183	// declaration available here and so can't declare wxString::iterator
	184	// as friend; so at least don't use a ctor but a static function
	185	// that must be used explicitly (this is more than using 'explicit'
	186	// keyword on ctor!):
81727065	187	#if wxUSE_UNICODE_UTF8
b0c4d5d7 VS	188	static wxUniCharRef CreateForString(wxStringIteratorNode& node, iterator pos)
b0c4d5d7 VS	189	{ return wxUniCharRef(node, pos); }
81727065	190	#else
a962cdf4	191	static wxUniCharRef CreateForString(iterator pos)
e3f6cbd9	192	{ return wxUniCharRef(pos); }
81727065	193	#endif
e3f6cbd9	194
d1b7ed67	195	wxUniChar::value_type GetValue() const { return UniChar().GetValue(); }
1fc10687 VS	196
	197	#if wxUSE_UNICODE_UTF8
	198	wxUniChar::Utf8CharBuffer AsUTF8() const { return UniChar().AsUTF8(); }
	199	#endif // wxUSE_UNICODE_UTF8
	200
bc5443ba	201	bool IsAscii() const { return UniChar().IsAscii(); }
e3f6cbd9 VS	202
e3f6cbd9 VS	203	// Assignment operators:
81727065 VS	204	#if wxUSE_UNICODE_UTF8
	205	wxUniCharRef& operator=(const wxUniChar& c);
	206	#else
	207	wxUniCharRef& operator=(const wxUniChar& c) { m_pos = c; return this; }
	208	#endif
e3f6cbd9	209
81727065 VS	210	wxUniCharRef& operator=(const wxUniCharRef& c)
81727065 VS	211	{ return *this = c.UniChar(); }
e3f6cbd9 VS	212
e3f6cbd9 VS	213	wxUniCharRef& operator=(char c) { return *this = wxUniChar(c); }
db18be57	214	wxUniCharRef& operator=(unsigned char c) { return *this = wxUniChar(c); }
4d62edfb	215	#if wxWCHAR_T_IS_SEPARATE_TYPE
e3f6cbd9	216	wxUniCharRef& operator=(wchar_t c) { return *this = wxUniChar(c); }
21f0762a	217	#endif
171d6132	218	wxUniCharRef& operator=(int c) { return *this = wxUniChar(c); }
21f0762a VS	219	wxUniCharRef& operator=(unsigned int c) { return *this = wxUniChar(c); }
	220	wxUniCharRef& operator=(short int c) { return *this = wxUniChar(c); }
	221	wxUniCharRef& operator=(unsigned short int c) { return *this = wxUniChar(c); }
4e5b3a4e	222	wxUniCharRef& operator=(long int c) { return *this = wxUniChar(c); }
21f0762a	223	wxUniCharRef& operator=(unsigned long int c) { return *this = wxUniChar(c); }
e3f6cbd9	224
2a686bd3	225	// Conversions to the same types as wxUniChar is convertible too:
e3f6cbd9	226	operator char() const { return UniChar(); }
2a686bd3	227	operator unsigned char() const { return UniChar(); }
4d62edfb	228	#if wxWCHAR_T_IS_SEPARATE_TYPE
436bb9f5	229	operator wchar_t() const { return UniChar(); }
c961c0cf	230	#endif
21f0762a	231	operator int() const { return UniChar(); }
153bc803	232	operator unsigned int() const { return UniChar(); }
21f0762a VS	233	operator short int() const { return UniChar(); }
	234	operator unsigned short int() const { return UniChar(); }
	235	operator long int() const { return UniChar(); }
	236	operator unsigned long int() const { return UniChar(); }
e3f6cbd9 VS	237
	238	// see wxUniChar::operator bool etc. for explanation
	239	operator bool() const { return (bool)UniChar(); }
	240	bool operator!() const { return !UniChar(); }
e3f6cbd9	241	bool operator&&(bool v) const { return UniChar() && v; }
e3f6cbd9	242
fb52c2b6	243	// Comparison operators:
98c4eb39	244	#define wxDEFINE_UNICHARREF_OPERATOR(op) \
fb52c2b6 VZ	245	bool operator op(const wxUniCharRef& c) const { return UniChar() op c.UniChar(); }\
	246	bool operator op(const wxUniChar& c) const { return UniChar() op c; } \
	247	bool operator op(char c) const { return UniChar() op c; } \
db18be57	248	bool operator op(unsigned char c) const { return UniChar() op c; } \
21f0762a	249	wxIF_WCHAR_T_TYPE( bool operator op(wchar_t c) const { return UniChar() op c; } ) \
db18be57	250	bool operator op(int c) const { return UniChar() op c; } \
21f0762a VS	251	bool operator op(unsigned int c) const { return UniChar() op c; } \
	252	bool operator op(short int c) const { return UniChar() op c; } \
	253	bool operator op(unsigned short int c) const { return UniChar() op c; } \
4e5b3a4e	254	bool operator op(long int c) const { return UniChar() op c; } \
21f0762a	255	bool operator op(unsigned long int c) const { return UniChar() op c; }
e3f6cbd9	256
fb52c2b6	257	wxFOR_ALL_COMPARISONS(wxDEFINE_UNICHARREF_OPERATOR)
e3f6cbd9	258
fb52c2b6	259	#undef wxDEFINE_UNICHARREF_OPERATOR
e3f6cbd9 VS	260
	261	// for expressions like c-'A':
	262	int operator-(const wxUniCharRef& c) const { return UniChar() - c.UniChar(); }
	263	int operator-(const wxUniChar& c) const { return UniChar() - c; }
	264	int operator-(char c) const { return UniChar() - c; }
db18be57	265	int operator-(unsigned char c) const { return UniChar() - c; }
e3f6cbd9	266	int operator-(wchar_t c) const { return UniChar() - c; }
e3f6cbd9 VS	267
e3f6cbd9 VS	268	private:
81727065	269	#if wxUSE_UNICODE_UTF8
467175ab	270	wxUniChar UniChar() const;
81727065	271	#else
467175ab	272	wxUniChar UniChar() const { return *m_pos; }
81727065 VS	273	#endif
81727065 VS	274
e3f6cbd9 VS	275	friend class WXDLLIMPEXP_BASE wxUniChar;
	276
	277	private:
81727065 VS	278	// reference to the string and pointer to the character in string
81727065 VS	279	#if wxUSE_UNICODE_UTF8
b0c4d5d7	280	wxStringIteratorNode& m_node;
81727065	281	#endif
a962cdf4	282	iterator m_pos;
e3f6cbd9 VS	283	};
	284
	285	inline wxUniChar::wxUniChar(const wxUniCharRef& c)
	286	{
	287	m_value = c.UniChar().m_value;
	288	}
	289
fb52c2b6 VZ	290	// Comparison operators for the case when wxUniChar(Ref) is the second operand
fb52c2b6 VZ	291	// implemented in terms of member comparison functions
e3f6cbd9	292
fb52c2b6	293	#define wxCMP_REVERSE(c1, c2, op) c2 op c1
e3f6cbd9	294
fb52c2b6 VZ	295	wxDEFINE_COMPARISONS(char, const wxUniChar&, wxCMP_REVERSE)
fb52c2b6 VZ	296	wxDEFINE_COMPARISONS(char, const wxUniCharRef&, wxCMP_REVERSE)
e3f6cbd9	297
fb52c2b6 VZ	298	wxDEFINE_COMPARISONS(wchar_t, const wxUniChar&, wxCMP_REVERSE)
fb52c2b6 VZ	299	wxDEFINE_COMPARISONS(wchar_t, const wxUniCharRef&, wxCMP_REVERSE)
e3f6cbd9	300
fb52c2b6	301	wxDEFINE_COMPARISONS(const wxUniChar&, const wxUniCharRef&, wxCMP_REVERSE)
e3f6cbd9	302
fb52c2b6	303	#undef wxCMP_REVERSE
e3f6cbd9 VS	304
	305	// for expressions like c-'A':
	306	inline int operator-(char c1, const wxUniCharRef& c2) { return -(c2 - c1); }
e3f6cbd9	307	inline int operator-(const wxUniChar& c1, const wxUniCharRef& c2) { return -(c2 - c1); }
436bb9f5	308	inline int operator-(wchar_t c1, const wxUniCharRef& c2) { return -(c2 - c1); }
e3f6cbd9 VS	309
e3f6cbd9 VS	310	#endif /* _WX_UNICHAR_H_ */