[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)) || \
    wxCHECK_SUNCC_VERSION(5, 9)
    #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); }

    // 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; }
    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__)) \|\| \
be3dcfb3 VZ	23	(defined(__VISUALC__) && defined(_NATIVE_WCHAR_T_DEFINED)) \|\| \
be3dcfb3 VZ	24	wxCHECK_SUNCC_VERSION(5, 9)
436bb9f5 VZ	25	#define wxWINT_T_IS_SEPARATE_TYPE
	26	#endif
	27
	28	// helper macro for doing something dependent on whether wint_t is or isn't a
	29	// typedef inside another macro
	30	#ifdef wxWINT_T_IS_SEPARATE_TYPE
	31	#define wxIF_WINT_T_TYPE(x) x
	32	#else // !wxWINT_T_IS_SEPARATE_TYPE
	33	#define wxIF_WINT_T_TYPE(x)
	34	#endif // wxWINT_T_IS_SEPARATE_TYPE/!wxWINT_T_IS_SEPARATE_TYPE
	35
153bc803 VZ	36	// wchar_t seems to be defined as unsigned short by all Windows compilers but
	37	// unsigned int everywhere else
	38	#ifndef __WIN32__
	39	#define wxWCHAR_T_IS_UINT
	40	#endif
	41
e3f6cbd9	42	class WXDLLIMPEXP_BASE wxUniCharRef;
b0c4d5d7	43	class WXDLLIMPEXP_BASE wxStringIteratorNode;
e3f6cbd9 VS	44
	45	// This class represents single Unicode character. It can be converted to
	46	// and from char or wchar_t and implements commonly used character operations.
	47	class WXDLLIMPEXP_BASE wxUniChar
	48	{
	49	public:
	50	// NB: this is not wchar_t on purpose, it needs to represent the entire
	51	// Unicode code points range and wchar_t may be too small for that
	52	// (e.g. on Win32 where wchar_t* is encoded in UTF-16)
dbecee02	53	typedef wxUint32 value_type;
e3f6cbd9 VS	54
	55	wxUniChar() : m_value(0) {}
	56
	57	// Create the character from 8bit character value encoded in the current
	58	// locale's charset.
	59	wxUniChar(char c) { m_value = From8bit(c); }
9f1b1b78	60	wxUniChar(unsigned char c) { m_value = From8bit((char)c); }
e3f6cbd9 VS	61
	62	// Create the character from a wchar_t character value.
	63	wxUniChar(wchar_t c) { m_value = c; }
436bb9f5 VZ	64	#ifdef wxWINT_T_IS_SEPARATE_TYPE
	65	wxUniChar(wint_t c) { m_value = c; }
	66	#endif
e3f6cbd9	67
e3f6cbd9	68	wxUniChar(int c) { m_value = c; }
4e5b3a4e	69	wxUniChar(long int c) { m_value = c; }
e3f6cbd9 VS	70
	71	wxUniChar(const wxUniCharRef& c);
	72
	73	// Returns Unicode code point value of the character
d1b7ed67	74	value_type GetValue() const { return m_value; }
e3f6cbd9	75
1fc10687 VS	76	#if wxUSE_UNICODE_UTF8
	77	// buffer for single UTF-8 character
	78	struct Utf8CharBuffer
	79	{
	80	char data[5];
	81	operator const char*() const { return data; }
	82	};
	83
	84	// returns the character encoded as UTF-8
	85	// (NB: implemented in stringops.cpp)
	86	Utf8CharBuffer AsUTF8() const;
	87	#endif // wxUSE_UNICODE_UTF8
	88
81727065 VS	89	// Returns true if the character is an ASCII character:
	90	bool IsAscii() const { return m_value < 0x80; }
	91
2a686bd3 VZ	92	// Conversions to char and wchar_t types: all of those are needed to be
	93	// able to pass wxUniChars to verious standard narrow and wide character
	94	// functions
e3f6cbd9 VS	95	operator char() const { return To8bit(m_value); }
e3f6cbd9 VS	96	operator wchar_t() const { return m_value; }
e3f6cbd9	97	operator int() const { return m_value; }
4e5b3a4e	98	operator long int() const { return m_value; }
153bc803 VZ	99	#ifndef wxWCHAR_T_IS_UINT
	100	operator unsigned int() const { return m_value; }
	101	#endif
2a686bd3 VZ	102
	103	// More conversions needed for other standard functions: uchar is for VC++
	104	// _mbxxx() ones (to which toxxx/isxxx() are mapped when _MBCS is defined)
c961c0cf VZ	105	// and some wide character functions take wint_t which happens to be the
	106	// same as wchar_t for Windows compilers but not for g++ (except for the
	107	// special Apple version)
2a686bd3	108	operator unsigned char() const { return (unsigned char)To8bit(m_value); }
436bb9f5	109	#ifdef wxWINT_T_IS_SEPARATE_TYPE
c961c0cf VZ	110	operator wint_t() const { return m_value; }
c961c0cf VZ	111	#endif
e3f6cbd9 VS	112
	113	// We need this operator for the "*p" part of expressions like "for (
	114	// const_iterator p = begin() + nStart; *p; ++p )". In this case,
	115	// compilation would fail without it because the conversion to bool would
	116	// be ambiguous (there are all these int types conversions...). (And adding
	117	// operator unspecified_bool_type() would only makes the ambiguity worse.)
	118	operator bool() const { return m_value != 0; }
	119	bool operator!() const { return !((bool)*this); }
8019a673 VZ	120
	121	// And this one is needed by some (not all, but not using ifdefs makes the
	122	// code easier) compilers to parse "str[0] && *p" successfully
e3f6cbd9	123	bool operator&&(bool v) const { return (bool)*this && v; }
e3f6cbd9 VS	124
	125	// Assignment operators:
	126	wxUniChar& operator=(const wxUniChar& c) { m_value = c.m_value; return *this; }
	127	wxUniChar& operator=(char c) { m_value = From8bit(c); return *this; }
db18be57	128	wxUniChar& operator=(unsigned char c) { m_value = From8bit((char)c); return *this; }
e3f6cbd9	129	wxUniChar& operator=(wchar_t c) { m_value = c; return *this; }
171d6132	130	wxUniChar& operator=(int c) { m_value = c; return *this; }
4e5b3a4e	131	wxUniChar& operator=(long int c) { m_value = c; return *this; }
436bb9f5 VZ	132	#ifdef wxWINT_T_IS_SEPARATE_TYPE
	133	wxUniChar& operator=(wint_t c) { m_value = c; return *this; }
	134	#endif
e3f6cbd9	135
fb52c2b6	136	// Comparison operators:
e3f6cbd9	137
fb52c2b6	138	// define the given comparison operator for all the types
98c4eb39	139	#define wxDEFINE_UNICHAR_OPERATOR(op) \
fb52c2b6 VZ	140	bool operator op(const wxUniChar& c) const { return m_value op c.m_value; }\
fb52c2b6 VZ	141	bool operator op(char c) const { return m_value op From8bit(c); } \
db18be57	142	bool operator op(unsigned char c) const { return m_value op From8bit((char)c); } \
436bb9f5	143	bool operator op(wchar_t c) const { return m_value op (value_type)c; } \
db18be57	144	bool operator op(int c) const { return m_value op (value_type)c; } \
4e5b3a4e	145	bool operator op(long int c) const { return m_value op (value_type)c; } \
436bb9f5	146	wxIF_WINT_T_TYPE( bool operator op(wint_t c) const { return m_value op (value_type)c; } )
e3f6cbd9	147
fb52c2b6	148	wxFOR_ALL_COMPARISONS(wxDEFINE_UNICHAR_OPERATOR)
e3f6cbd9	149
fb52c2b6	150	#undef wxDEFINE_UNICHAR_OPERATOR
e3f6cbd9	151
fb52c2b6	152	// this is needed for expressions like 'Z'-c
e3f6cbd9 VS	153	int operator-(const wxUniChar& c) const { return m_value - c.m_value; }
e3f6cbd9 VS	154	int operator-(char c) const { return m_value - From8bit(c); }
db18be57	155	int operator-(unsigned char c) const { return m_value - From8bit((char)c); }
d1b7ed67	156	int operator-(wchar_t c) const { return m_value - (value_type)c; }
436bb9f5 VZ	157	#ifdef wxWINT_T_IS_SEPARATE_TYPE
	158	int operator-(wint_t c) const { return m_value - (value_type)c; }
	159	#endif
e3f6cbd9 VS	160
e3f6cbd9 VS	161	private:
d1b7ed67 VS	162	static value_type From8bit(char c);
d1b7ed67 VS	163	static char To8bit(value_type c);
e3f6cbd9 VS	164
e3f6cbd9 VS	165	private:
d1b7ed67	166	value_type m_value;
e3f6cbd9 VS	167	};
	168
	169
	170	// Writeable reference to a character in wxString.
	171	//
	172	// This class can be used in the same way wxChar is used, except that changing
	173	// its value updates the underlying string object.
	174	class WXDLLIMPEXP_BASE wxUniCharRef
	175	{
	176	private:
a962cdf4 VS	177	typedef wxStringImpl::iterator iterator;
a962cdf4 VS	178
e3f6cbd9	179	// create the reference
81727065	180	#if wxUSE_UNICODE_UTF8
b0c4d5d7	181	wxUniCharRef(wxStringIteratorNode& node, iterator pos) : m_node(node), m_pos(pos) {}
81727065	182	#else
a962cdf4	183	wxUniCharRef(iterator pos) : m_pos(pos) {}
81727065	184	#endif
e3f6cbd9 VS	185
	186	public:
	187	// NB: we have to make this public, because we don't have wxString
	188	// declaration available here and so can't declare wxString::iterator
	189	// as friend; so at least don't use a ctor but a static function
	190	// that must be used explicitly (this is more than using 'explicit'
	191	// keyword on ctor!):
81727065	192	#if wxUSE_UNICODE_UTF8
b0c4d5d7 VS	193	static wxUniCharRef CreateForString(wxStringIteratorNode& node, iterator pos)
b0c4d5d7 VS	194	{ return wxUniCharRef(node, pos); }
81727065	195	#else
a962cdf4	196	static wxUniCharRef CreateForString(iterator pos)
e3f6cbd9	197	{ return wxUniCharRef(pos); }
81727065	198	#endif
e3f6cbd9	199
d1b7ed67	200	wxUniChar::value_type GetValue() const { return UniChar().GetValue(); }
1fc10687 VS	201
	202	#if wxUSE_UNICODE_UTF8
	203	wxUniChar::Utf8CharBuffer AsUTF8() const { return UniChar().AsUTF8(); }
	204	#endif // wxUSE_UNICODE_UTF8
	205
bc5443ba	206	bool IsAscii() const { return UniChar().IsAscii(); }
e3f6cbd9 VS	207
e3f6cbd9 VS	208	// Assignment operators:
81727065 VS	209	#if wxUSE_UNICODE_UTF8
	210	wxUniCharRef& operator=(const wxUniChar& c);
	211	#else
	212	wxUniCharRef& operator=(const wxUniChar& c) { m_pos = c; return this; }
	213	#endif
e3f6cbd9	214
81727065 VS	215	wxUniCharRef& operator=(const wxUniCharRef& c)
81727065 VS	216	{ return *this = c.UniChar(); }
e3f6cbd9 VS	217
e3f6cbd9 VS	218	wxUniCharRef& operator=(char c) { return *this = wxUniChar(c); }
db18be57	219	wxUniCharRef& operator=(unsigned char c) { return *this = wxUniChar(c); }
e3f6cbd9	220	wxUniCharRef& operator=(wchar_t c) { return *this = wxUniChar(c); }
171d6132	221	wxUniCharRef& operator=(int c) { return *this = wxUniChar(c); }
4e5b3a4e	222	wxUniCharRef& operator=(long int c) { return *this = wxUniChar(c); }
436bb9f5 VZ	223	#ifdef wxWINT_T_IS_SEPARATE_TYPE
	224	wxUniCharRef& operator=(wint_t c) { return *this = wxUniChar(c); }
	225	#endif
e3f6cbd9	226
2a686bd3	227	// Conversions to the same types as wxUniChar is convertible too:
e3f6cbd9	228	operator char() const { return UniChar(); }
e3f6cbd9	229	operator int() const { return UniChar(); }
4e5b3a4e	230	operator long int() const { return UniChar(); }
2a686bd3	231	operator unsigned char() const { return UniChar(); }
436bb9f5 VZ	232	operator wchar_t() const { return UniChar(); }
436bb9f5 VZ	233	#ifdef wxWINT_T_IS_SEPARATE_TYPE
c961c0cf VZ	234	operator wint_t() const { return UniChar(); }
c961c0cf VZ	235	#endif
153bc803 VZ	236	#ifndef wxWCHAR_T_IS_UINT
	237	operator unsigned int() const { return UniChar(); }
	238	#endif
e3f6cbd9 VS	239
	240	// see wxUniChar::operator bool etc. for explanation
	241	operator bool() const { return (bool)UniChar(); }
	242	bool operator!() const { return !UniChar(); }
	243	#if (defined(__VISUALC__) && __VISUALC__ < 1400) \|\| \
	244	defined(__DIGITALMARS__) \|\| defined(__BORLANDC__)
	245	bool operator&&(bool v) const { return UniChar() && v; }
	246	#endif
	247
fb52c2b6	248	// Comparison operators:
98c4eb39	249	#define wxDEFINE_UNICHARREF_OPERATOR(op) \
fb52c2b6 VZ	250	bool operator op(const wxUniCharRef& c) const { return UniChar() op c.UniChar(); }\
	251	bool operator op(const wxUniChar& c) const { return UniChar() op c; } \
	252	bool operator op(char c) const { return UniChar() op c; } \
db18be57	253	bool operator op(unsigned char c) const { return UniChar() op c; } \
436bb9f5	254	bool operator op(wchar_t c) const { return UniChar() op c; } \
db18be57	255	bool operator op(int c) const { return UniChar() op c; } \
4e5b3a4e	256	bool operator op(long int c) const { return UniChar() op c; } \
436bb9f5	257	wxIF_WINT_T_TYPE( bool operator op(wint_t c) const { return UniChar() op c; } )
e3f6cbd9	258
fb52c2b6	259	wxFOR_ALL_COMPARISONS(wxDEFINE_UNICHARREF_OPERATOR)
e3f6cbd9	260
fb52c2b6	261	#undef wxDEFINE_UNICHARREF_OPERATOR
e3f6cbd9 VS	262
	263	// for expressions like c-'A':
	264	int operator-(const wxUniCharRef& c) const { return UniChar() - c.UniChar(); }
	265	int operator-(const wxUniChar& c) const { return UniChar() - c; }
	266	int operator-(char c) const { return UniChar() - c; }
db18be57	267	int operator-(unsigned char c) const { return UniChar() - c; }
e3f6cbd9	268	int operator-(wchar_t c) const { return UniChar() - c; }
436bb9f5 VZ	269	#ifdef wxWINT_T_IS_SEPARATE_TYPE
	270	int operator-(wint_t c) const { return UniChar() - c; }
	271	#endif
e3f6cbd9 VS	272
e3f6cbd9 VS	273	private:
81727065	274	#if wxUSE_UNICODE_UTF8
467175ab	275	wxUniChar UniChar() const;
81727065	276	#else
467175ab	277	wxUniChar UniChar() const { return *m_pos; }
81727065 VS	278	#endif
81727065 VS	279
e3f6cbd9 VS	280	friend class WXDLLIMPEXP_BASE wxUniChar;
	281
	282	private:
81727065 VS	283	// reference to the string and pointer to the character in string
81727065 VS	284	#if wxUSE_UNICODE_UTF8
b0c4d5d7	285	wxStringIteratorNode& m_node;
81727065	286	#endif
a962cdf4	287	iterator m_pos;
e3f6cbd9 VS	288	};
	289
	290	inline wxUniChar::wxUniChar(const wxUniCharRef& c)
	291	{
	292	m_value = c.UniChar().m_value;
	293	}
	294
fb52c2b6 VZ	295	// Comparison operators for the case when wxUniChar(Ref) is the second operand
fb52c2b6 VZ	296	// implemented in terms of member comparison functions
e3f6cbd9	297
fb52c2b6	298	#define wxCMP_REVERSE(c1, c2, op) c2 op c1
e3f6cbd9	299
fb52c2b6 VZ	300	wxDEFINE_COMPARISONS(char, const wxUniChar&, wxCMP_REVERSE)
fb52c2b6 VZ	301	wxDEFINE_COMPARISONS(char, const wxUniCharRef&, wxCMP_REVERSE)
e3f6cbd9	302
fb52c2b6 VZ	303	wxDEFINE_COMPARISONS(wchar_t, const wxUniChar&, wxCMP_REVERSE)
fb52c2b6 VZ	304	wxDEFINE_COMPARISONS(wchar_t, const wxUniCharRef&, wxCMP_REVERSE)
e3f6cbd9	305
436bb9f5	306	#ifdef wxWINT_T_IS_SEPARATE_TYPE
2c6725e6	307	wxDEFINE_COMPARISONS(wint_t, const wxUniChar&, wxCMP_REVERSE)
436bb9f5 VZ	308	wxDEFINE_COMPARISONS(wint_t, const wxUniCharRef&, wxCMP_REVERSE)
	309	#endif
	310
fb52c2b6	311	wxDEFINE_COMPARISONS(const wxUniChar&, const wxUniCharRef&, wxCMP_REVERSE)
e3f6cbd9	312
fb52c2b6	313	#undef wxCMP_REVERSE
e3f6cbd9 VS	314
	315	// for expressions like c-'A':
	316	inline int operator-(char c1, const wxUniCharRef& c2) { return -(c2 - c1); }
e3f6cbd9	317	inline int operator-(const wxUniChar& c1, const wxUniCharRef& c2) { return -(c2 - c1); }
436bb9f5 VZ	318	inline int operator-(wchar_t c1, const wxUniCharRef& c2) { return -(c2 - c1); }
	319	#ifdef wxWINT_T_IS_SEPARATE_TYPE
	320	inline int operator-(wint_t c1, const wxUniCharRef& c2) { return -(c2 - c1); }
	321	#endif
e3f6cbd9 VS	322
e3f6cbd9 VS	323	#endif /* _WX_UNICHAR_H_ */