[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"

// wint_t is just a typedef for wchar_t for many old compilers but for modern
// ones it's a separate type and we must provide a conversion to it to allow
// passing wxUniChar[Ref] to functions taking wint_t such as iswalnum() &c
#if (defined(__GNUC__) && \
        !defined(__DARWIN__) && !defined(__OS2__) && !defined(__DOS__)) || \
    (defined(__VISUALC__) && defined(_NATIVE_WCHAR_T_DEFINED))
    #define wxWINT_T_IS_SEPARATE_TYPE
#endif

// helper macro for doing something dependent on whether wint_t is or isn't a
// typedef inside another macro
#ifdef wxWINT_T_IS_SEPARATE_TYPE
    #define wxIF_WINT_T_TYPE(x) x
#else // !wxWINT_T_IS_SEPARATE_TYPE
    #define wxIF_WINT_T_TYPE(x)
#endif // wxWINT_T_IS_SEPARATE_TYPE/!wxWINT_T_IS_SEPARATE_TYPE

// wchar_t seems to be defined as unsigned short by all Windows compilers but
// unsigned int everywhere else
#ifndef __WIN32__
    #define wxWCHAR_T_IS_UINT
#endif

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.
    wxUniChar(wchar_t c) { m_value = c; }
#ifdef wxWINT_T_IS_SEPARATE_TYPE
    wxUniChar(wint_t c) { m_value = c; }
#endif

    wxUniChar(int c) { m_value = c; }
    wxUniChar(long 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 wchar_t() const { return m_value; }
    operator int() const { return m_value; }
    operator long int() const { return m_value; }
#ifndef wxWCHAR_T_IS_UINT
    operator unsigned int() const { return m_value; }
#endif

    // More conversions needed for other standard functions: uchar is for VC++
    // _mbxxx() ones (to which toxxx/isxxx() are mapped when _MBCS is defined)
    // and some wide character functions take wint_t which happens to be the
    // same as wchar_t for Windows compilers but not for g++ (except for the
    // special Apple version)
    operator unsigned char() const { return (unsigned char)To8bit(m_value); }
#ifdef wxWINT_T_IS_SEPARATE_TYPE
    operator wint_t() const { return m_value; }
#endif

    // 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); }
#if (defined(__VISUALC__) && __VISUALC__ < 1400) || \
    defined(__DIGITALMARS__) || defined(__BORLANDC__)
    // We need this for VC++ < 8 or DigitalMars and expressions like
    // "str[0] && *p":
    bool operator&&(bool v) const { return (bool)*this && v; }
#endif

    // 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; }
    wxUniChar& operator=(wchar_t c) { m_value = c; return *this; }
    wxUniChar& operator=(int c) { m_value = c; return *this; }
    wxUniChar& operator=(long int c) { m_value = c; return *this; }
#ifdef wxWINT_T_IS_SEPARATE_TYPE
    wxUniChar& operator=(wint_t c) { m_value = c; return *this; }
#endif

    // 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); } \
    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(long int c) const { return m_value op (value_type)c; }   \
    wxIF_WINT_T_TYPE( bool operator op(wint_t 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; }
#ifdef wxWINT_T_IS_SEPARATE_TYPE
    int operator-(wint_t c) const { return m_value - (value_type)c; }
#endif

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); }
    wxUniCharRef& operator=(wchar_t c) { return *this = wxUniChar(c); }
    wxUniCharRef& operator=(int c) { return *this = wxUniChar(c); }
    wxUniCharRef& operator=(long int c) { return *this = wxUniChar(c); }
#ifdef wxWINT_T_IS_SEPARATE_TYPE
    wxUniCharRef& operator=(wint_t c) { return *this = wxUniChar(c); }
#endif

    // Conversions to the same types as wxUniChar is convertible too:
    operator char() const { return UniChar(); }
    operator int() const { return UniChar(); }
    operator long int() const { return UniChar(); }
    operator unsigned char() const { return UniChar(); }
    operator wchar_t() const { return UniChar(); }
#ifdef wxWINT_T_IS_SEPARATE_TYPE
    operator wint_t() const { return UniChar(); }
#endif
#ifndef wxWCHAR_T_IS_UINT
    operator unsigned int() const { return UniChar(); }
#endif

    // see wxUniChar::operator bool etc. for explanation
    operator bool() const { return (bool)UniChar(); }
    bool operator!() const { return !UniChar(); }
#if (defined(__VISUALC__) && __VISUALC__ < 1400) || \
    defined(__DIGITALMARS__) || defined(__BORLANDC__)
    bool operator&&(bool v) const { return UniChar() && v; }
#endif

    // 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; }        \
    bool operator op(wchar_t c) const { return UniChar() op c; }              \
    bool operator op(int c) const { return UniChar() op c; }                  \
    bool operator op(long int c) const { return UniChar() op c; }             \
    wxIF_WINT_T_TYPE( bool operator op(wint_t 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; }
#ifdef wxWINT_T_IS_SEPARATE_TYPE
    int operator-(wint_t c) const { return UniChar() - c; }
#endif

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)

#ifdef wxWINT_T_IS_SEPARATE_TYPE
wxDEFINE_COMPARISONS(wint_t, const wxUniChar&, wxCMP_REVERSE)
wxDEFINE_COMPARISONS(wint_t, const wxUniCharRef&, wxCMP_REVERSE)
#endif

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); }
#ifdef wxWINT_T_IS_SEPARATE_TYPE
inline int operator-(wint_t c1, const wxUniCharRef& c2) { return -(c2 - c1); }
#endif

#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
436bb9f5 VZ	18	// wint_t is just a typedef for wchar_t for many old compilers but for modern
	19	// ones it's a separate type and we must provide a conversion to it to allow
	20	// passing wxUniChar[Ref] to functions taking wint_t such as iswalnum() &c
fddca1dc VZ	21	#if (defined(__GNUC__) && \
fddca1dc VZ	22	!defined(__DARWIN__) && !defined(__OS2__) && !defined(__DOS__)) \|\| \
436bb9f5 VZ	23	(defined(__VISUALC__) && defined(_NATIVE_WCHAR_T_DEFINED))
	24	#define wxWINT_T_IS_SEPARATE_TYPE
	25	#endif
	26
	27	// helper macro for doing something dependent on whether wint_t is or isn't a
	28	// typedef inside another macro
	29	#ifdef wxWINT_T_IS_SEPARATE_TYPE
	30	#define wxIF_WINT_T_TYPE(x) x
	31	#else // !wxWINT_T_IS_SEPARATE_TYPE
	32	#define wxIF_WINT_T_TYPE(x)
	33	#endif // wxWINT_T_IS_SEPARATE_TYPE/!wxWINT_T_IS_SEPARATE_TYPE
	34
153bc803 VZ	35	// wchar_t seems to be defined as unsigned short by all Windows compilers but
	36	// unsigned int everywhere else
	37	#ifndef __WIN32__
	38	#define wxWCHAR_T_IS_UINT
	39	#endif
	40
e3f6cbd9	41	class WXDLLIMPEXP_BASE wxUniCharRef;
b0c4d5d7	42	class WXDLLIMPEXP_BASE wxStringIteratorNode;
e3f6cbd9 VS	43
	44	// This class represents single Unicode character. It can be converted to
	45	// and from char or wchar_t and implements commonly used character operations.
	46	class WXDLLIMPEXP_BASE wxUniChar
	47	{
	48	public:
	49	// NB: this is not wchar_t on purpose, it needs to represent the entire
	50	// Unicode code points range and wchar_t may be too small for that
	51	// (e.g. on Win32 where wchar_t* is encoded in UTF-16)
dbecee02	52	typedef wxUint32 value_type;
e3f6cbd9 VS	53
	54	wxUniChar() : m_value(0) {}
	55
	56	// Create the character from 8bit character value encoded in the current
	57	// locale's charset.
	58	wxUniChar(char c) { m_value = From8bit(c); }
9f1b1b78	59	wxUniChar(unsigned char c) { m_value = From8bit((char)c); }
e3f6cbd9 VS	60
	61	// Create the character from a wchar_t character value.
	62	wxUniChar(wchar_t c) { m_value = c; }
436bb9f5 VZ	63	#ifdef wxWINT_T_IS_SEPARATE_TYPE
	64	wxUniChar(wint_t c) { m_value = c; }
	65	#endif
e3f6cbd9	66
e3f6cbd9	67	wxUniChar(int c) { m_value = c; }
4e5b3a4e	68	wxUniChar(long int c) { m_value = c; }
e3f6cbd9 VS	69
	70	wxUniChar(const wxUniCharRef& c);
	71
	72	// Returns Unicode code point value of the character
d1b7ed67	73	value_type GetValue() const { return m_value; }
e3f6cbd9	74
1fc10687 VS	75	#if wxUSE_UNICODE_UTF8
	76	// buffer for single UTF-8 character
	77	struct Utf8CharBuffer
	78	{
	79	char data[5];
	80	operator const char*() const { return data; }
	81	};
	82
	83	// returns the character encoded as UTF-8
	84	// (NB: implemented in stringops.cpp)
	85	Utf8CharBuffer AsUTF8() const;
	86	#endif // wxUSE_UNICODE_UTF8
	87
81727065 VS	88	// Returns true if the character is an ASCII character:
	89	bool IsAscii() const { return m_value < 0x80; }
	90
2a686bd3 VZ	91	// Conversions to char and wchar_t types: all of those are needed to be
	92	// able to pass wxUniChars to verious standard narrow and wide character
	93	// functions
e3f6cbd9 VS	94	operator char() const { return To8bit(m_value); }
e3f6cbd9 VS	95	operator wchar_t() const { return m_value; }
e3f6cbd9	96	operator int() const { return m_value; }
4e5b3a4e	97	operator long int() const { return m_value; }
153bc803 VZ	98	#ifndef wxWCHAR_T_IS_UINT
	99	operator unsigned int() const { return m_value; }
	100	#endif
2a686bd3 VZ	101
	102	// More conversions needed for other standard functions: uchar is for VC++
	103	// _mbxxx() ones (to which toxxx/isxxx() are mapped when _MBCS is defined)
c961c0cf VZ	104	// and some wide character functions take wint_t which happens to be the
	105	// same as wchar_t for Windows compilers but not for g++ (except for the
	106	// special Apple version)
2a686bd3	107	operator unsigned char() const { return (unsigned char)To8bit(m_value); }
436bb9f5	108	#ifdef wxWINT_T_IS_SEPARATE_TYPE
c961c0cf VZ	109	operator wint_t() const { return m_value; }
c961c0cf VZ	110	#endif
e3f6cbd9 VS	111
	112	// We need this operator for the "*p" part of expressions like "for (
	113	// const_iterator p = begin() + nStart; *p; ++p )". In this case,
	114	// compilation would fail without it because the conversion to bool would
	115	// be ambiguous (there are all these int types conversions...). (And adding
	116	// operator unspecified_bool_type() would only makes the ambiguity worse.)
	117	operator bool() const { return m_value != 0; }
	118	bool operator!() const { return !((bool)*this); }
	119	#if (defined(__VISUALC__) && __VISUALC__ < 1400) \|\| \
	120	defined(__DIGITALMARS__) \|\| defined(__BORLANDC__)
	121	// We need this for VC++ < 8 or DigitalMars and expressions like
	122	// "str[0] && *p":
	123	bool operator&&(bool v) const { return (bool)*this && v; }
	124	#endif
	125
	126	// Assignment operators:
	127	wxUniChar& operator=(const wxUniChar& c) { m_value = c.m_value; return *this; }
	128	wxUniChar& operator=(char c) { m_value = From8bit(c); return *this; }
db18be57	129	wxUniChar& operator=(unsigned char c) { m_value = From8bit((char)c); return *this; }
e3f6cbd9	130	wxUniChar& operator=(wchar_t c) { m_value = c; return *this; }
171d6132	131	wxUniChar& operator=(int c) { m_value = c; return *this; }
4e5b3a4e	132	wxUniChar& operator=(long int c) { m_value = c; return *this; }
436bb9f5 VZ	133	#ifdef wxWINT_T_IS_SEPARATE_TYPE
	134	wxUniChar& operator=(wint_t c) { m_value = c; return *this; }
	135	#endif
e3f6cbd9	136
fb52c2b6	137	// Comparison operators:
e3f6cbd9	138
fb52c2b6	139	// define the given comparison operator for all the types
98c4eb39	140	#define wxDEFINE_UNICHAR_OPERATOR(op) \
fb52c2b6 VZ	141	bool operator op(const wxUniChar& c) const { return m_value op c.m_value; }\
fb52c2b6 VZ	142	bool operator op(char c) const { return m_value op From8bit(c); } \
db18be57	143	bool operator op(unsigned char c) const { return m_value op From8bit((char)c); } \
436bb9f5	144	bool operator op(wchar_t c) const { return m_value op (value_type)c; } \
db18be57	145	bool operator op(int c) const { return m_value op (value_type)c; } \
4e5b3a4e	146	bool operator op(long int c) const { return m_value op (value_type)c; } \
436bb9f5	147	wxIF_WINT_T_TYPE( bool operator op(wint_t c) const { return m_value op (value_type)c; } )
e3f6cbd9	148
fb52c2b6	149	wxFOR_ALL_COMPARISONS(wxDEFINE_UNICHAR_OPERATOR)
e3f6cbd9	150
fb52c2b6	151	#undef wxDEFINE_UNICHAR_OPERATOR
e3f6cbd9	152
fb52c2b6	153	// this is needed for expressions like 'Z'-c
e3f6cbd9 VS	154	int operator-(const wxUniChar& c) const { return m_value - c.m_value; }
e3f6cbd9 VS	155	int operator-(char c) const { return m_value - From8bit(c); }
db18be57	156	int operator-(unsigned char c) const { return m_value - From8bit((char)c); }
d1b7ed67	157	int operator-(wchar_t c) const { return m_value - (value_type)c; }
436bb9f5 VZ	158	#ifdef wxWINT_T_IS_SEPARATE_TYPE
	159	int operator-(wint_t c) const { return m_value - (value_type)c; }
	160	#endif
e3f6cbd9 VS	161
e3f6cbd9 VS	162	private:
d1b7ed67 VS	163	static value_type From8bit(char c);
d1b7ed67 VS	164	static char To8bit(value_type c);
e3f6cbd9 VS	165
e3f6cbd9 VS	166	private:
d1b7ed67	167	value_type m_value;
e3f6cbd9 VS	168	};
	169
	170
	171	// Writeable reference to a character in wxString.
	172	//
	173	// This class can be used in the same way wxChar is used, except that changing
	174	// its value updates the underlying string object.
	175	class WXDLLIMPEXP_BASE wxUniCharRef
	176	{
	177	private:
a962cdf4 VS	178	typedef wxStringImpl::iterator iterator;
a962cdf4 VS	179
e3f6cbd9	180	// create the reference
81727065	181	#if wxUSE_UNICODE_UTF8
b0c4d5d7	182	wxUniCharRef(wxStringIteratorNode& node, iterator pos) : m_node(node), m_pos(pos) {}
81727065	183	#else
a962cdf4	184	wxUniCharRef(iterator pos) : m_pos(pos) {}
81727065	185	#endif
e3f6cbd9 VS	186
	187	public:
	188	// NB: we have to make this public, because we don't have wxString
	189	// declaration available here and so can't declare wxString::iterator
	190	// as friend; so at least don't use a ctor but a static function
	191	// that must be used explicitly (this is more than using 'explicit'
	192	// keyword on ctor!):
81727065	193	#if wxUSE_UNICODE_UTF8
b0c4d5d7 VS	194	static wxUniCharRef CreateForString(wxStringIteratorNode& node, iterator pos)
b0c4d5d7 VS	195	{ return wxUniCharRef(node, pos); }
81727065	196	#else
a962cdf4	197	static wxUniCharRef CreateForString(iterator pos)
e3f6cbd9	198	{ return wxUniCharRef(pos); }
81727065	199	#endif
e3f6cbd9	200
d1b7ed67	201	wxUniChar::value_type GetValue() const { return UniChar().GetValue(); }
1fc10687 VS	202
	203	#if wxUSE_UNICODE_UTF8
	204	wxUniChar::Utf8CharBuffer AsUTF8() const { return UniChar().AsUTF8(); }
	205	#endif // wxUSE_UNICODE_UTF8
	206
bc5443ba	207	bool IsAscii() const { return UniChar().IsAscii(); }
e3f6cbd9 VS	208
e3f6cbd9 VS	209	// Assignment operators:
81727065 VS	210	#if wxUSE_UNICODE_UTF8
	211	wxUniCharRef& operator=(const wxUniChar& c);
	212	#else
	213	wxUniCharRef& operator=(const wxUniChar& c) { m_pos = c; return this; }
	214	#endif
e3f6cbd9	215
81727065 VS	216	wxUniCharRef& operator=(const wxUniCharRef& c)
81727065 VS	217	{ return *this = c.UniChar(); }
e3f6cbd9 VS	218
e3f6cbd9 VS	219	wxUniCharRef& operator=(char c) { return *this = wxUniChar(c); }
db18be57	220	wxUniCharRef& operator=(unsigned char c) { return *this = wxUniChar(c); }
e3f6cbd9	221	wxUniCharRef& operator=(wchar_t c) { return *this = wxUniChar(c); }
171d6132	222	wxUniCharRef& operator=(int c) { return *this = wxUniChar(c); }
4e5b3a4e	223	wxUniCharRef& operator=(long int c) { return *this = wxUniChar(c); }
436bb9f5 VZ	224	#ifdef wxWINT_T_IS_SEPARATE_TYPE
	225	wxUniCharRef& operator=(wint_t c) { return *this = wxUniChar(c); }
	226	#endif
e3f6cbd9	227
2a686bd3	228	// Conversions to the same types as wxUniChar is convertible too:
e3f6cbd9	229	operator char() const { return UniChar(); }
e3f6cbd9	230	operator int() const { return UniChar(); }
4e5b3a4e	231	operator long int() const { return UniChar(); }
2a686bd3	232	operator unsigned char() const { return UniChar(); }
436bb9f5 VZ	233	operator wchar_t() const { return UniChar(); }
436bb9f5 VZ	234	#ifdef wxWINT_T_IS_SEPARATE_TYPE
c961c0cf VZ	235	operator wint_t() const { return UniChar(); }
c961c0cf VZ	236	#endif
153bc803 VZ	237	#ifndef wxWCHAR_T_IS_UINT
	238	operator unsigned int() const { return UniChar(); }
	239	#endif
e3f6cbd9 VS	240
	241	// see wxUniChar::operator bool etc. for explanation
	242	operator bool() const { return (bool)UniChar(); }
	243	bool operator!() const { return !UniChar(); }
	244	#if (defined(__VISUALC__) && __VISUALC__ < 1400) \|\| \
	245	defined(__DIGITALMARS__) \|\| defined(__BORLANDC__)
	246	bool operator&&(bool v) const { return UniChar() && v; }
	247	#endif
	248
fb52c2b6	249	// Comparison operators:
98c4eb39	250	#define wxDEFINE_UNICHARREF_OPERATOR(op) \
fb52c2b6 VZ	251	bool operator op(const wxUniCharRef& c) const { return UniChar() op c.UniChar(); }\
	252	bool operator op(const wxUniChar& c) const { return UniChar() op c; } \
	253	bool operator op(char c) const { return UniChar() op c; } \
db18be57	254	bool operator op(unsigned char c) const { return UniChar() op c; } \
436bb9f5	255	bool operator op(wchar_t c) const { return UniChar() op c; } \
db18be57	256	bool operator op(int c) const { return UniChar() op c; } \
4e5b3a4e	257	bool operator op(long int c) const { return UniChar() op c; } \
436bb9f5	258	wxIF_WINT_T_TYPE( bool operator op(wint_t c) const { return UniChar() op c; } )
e3f6cbd9	259
fb52c2b6	260	wxFOR_ALL_COMPARISONS(wxDEFINE_UNICHARREF_OPERATOR)
e3f6cbd9	261
fb52c2b6	262	#undef wxDEFINE_UNICHARREF_OPERATOR
e3f6cbd9 VS	263
	264	// for expressions like c-'A':
	265	int operator-(const wxUniCharRef& c) const { return UniChar() - c.UniChar(); }
	266	int operator-(const wxUniChar& c) const { return UniChar() - c; }
	267	int operator-(char c) const { return UniChar() - c; }
db18be57	268	int operator-(unsigned char c) const { return UniChar() - c; }
e3f6cbd9	269	int operator-(wchar_t c) const { return UniChar() - c; }
436bb9f5 VZ	270	#ifdef wxWINT_T_IS_SEPARATE_TYPE
	271	int operator-(wint_t c) const { return UniChar() - c; }
	272	#endif
e3f6cbd9 VS	273
e3f6cbd9 VS	274	private:
81727065	275	#if wxUSE_UNICODE_UTF8
467175ab	276	wxUniChar UniChar() const;
81727065	277	#else
467175ab	278	wxUniChar UniChar() const { return *m_pos; }
81727065 VS	279	#endif
81727065 VS	280
e3f6cbd9 VS	281	friend class WXDLLIMPEXP_BASE wxUniChar;
	282
	283	private:
81727065 VS	284	// reference to the string and pointer to the character in string
81727065 VS	285	#if wxUSE_UNICODE_UTF8
b0c4d5d7	286	wxStringIteratorNode& m_node;
81727065	287	#endif
a962cdf4	288	iterator m_pos;
e3f6cbd9 VS	289	};
	290
	291	inline wxUniChar::wxUniChar(const wxUniCharRef& c)
	292	{
	293	m_value = c.UniChar().m_value;
	294	}
	295
fb52c2b6 VZ	296	// Comparison operators for the case when wxUniChar(Ref) is the second operand
fb52c2b6 VZ	297	// implemented in terms of member comparison functions
e3f6cbd9	298
fb52c2b6	299	#define wxCMP_REVERSE(c1, c2, op) c2 op c1
e3f6cbd9	300
fb52c2b6 VZ	301	wxDEFINE_COMPARISONS(char, const wxUniChar&, wxCMP_REVERSE)
fb52c2b6 VZ	302	wxDEFINE_COMPARISONS(char, const wxUniCharRef&, wxCMP_REVERSE)
e3f6cbd9	303
fb52c2b6 VZ	304	wxDEFINE_COMPARISONS(wchar_t, const wxUniChar&, wxCMP_REVERSE)
fb52c2b6 VZ	305	wxDEFINE_COMPARISONS(wchar_t, const wxUniCharRef&, wxCMP_REVERSE)
e3f6cbd9	306
436bb9f5	307	#ifdef wxWINT_T_IS_SEPARATE_TYPE
2c6725e6	308	wxDEFINE_COMPARISONS(wint_t, const wxUniChar&, wxCMP_REVERSE)
436bb9f5 VZ	309	wxDEFINE_COMPARISONS(wint_t, const wxUniCharRef&, wxCMP_REVERSE)
	310	#endif
	311
fb52c2b6	312	wxDEFINE_COMPARISONS(const wxUniChar&, const wxUniCharRef&, wxCMP_REVERSE)
e3f6cbd9	313
fb52c2b6	314	#undef wxCMP_REVERSE
e3f6cbd9 VS	315
	316	// for expressions like c-'A':
	317	inline int operator-(char c1, const wxUniCharRef& c2) { return -(c2 - c1); }
e3f6cbd9	318	inline int operator-(const wxUniChar& c1, const wxUniCharRef& c2) { return -(c2 - c1); }
436bb9f5 VZ	319	inline int operator-(wchar_t c1, const wxUniCharRef& c2) { return -(c2 - c1); }
	320	#ifdef wxWINT_T_IS_SEPARATE_TYPE
	321	inline int operator-(wint_t c1, const wxUniCharRef& c2) { return -(c2 - c1); }
	322	#endif
e3f6cbd9 VS	323
e3f6cbd9 VS	324	#endif /* _WX_UNICHAR_H_ */