X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/d4e59879957aa50fa55de8d3910f63e997b9ec8e..66c2bf7b1d9326fb650acfaae22ec50528cfbf7c:/include/wx/unichar.h diff --git a/include/wx/unichar.h b/include/wx/unichar.h index e3bfb4c587..a661e5a4e2 100644 --- a/include/wx/unichar.h +++ b/include/wx/unichar.h @@ -3,7 +3,6 @@ // Purpose: wxUniChar and wxUniCharRef classes // Author: Vaclav Slavik // Created: 2007-03-19 -// RCS-ID: $Id$ // Copyright: (c) 2007 REA Elektronik GmbH // Licence: wxWindows licence /////////////////////////////////////////////////////////////////////////////// @@ -15,26 +14,8 @@ #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; +class WXDLLIMPEXP_FWD_BASE wxUniCharRef; +class WXDLLIMPEXP_FWD_BASE wxString; // This class represents single Unicode character. It can be converted to // and from char or wchar_t and implements commonly used character operations. @@ -53,17 +34,10 @@ public: 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; } +#define wxUNICHAR_DEFINE_CTOR(type) \ + wxUniChar(type c) { m_value = (value_type)c; } + wxDO_FOR_INT_TYPES(wxUNICHAR_DEFINE_CTOR) +#undef wxUNICHAR_DEFINE_CTOR wxUniChar(const wxUniCharRef& c); @@ -86,20 +60,37 @@ public: // Returns true if the character is an ASCII character: bool IsAscii() const { return m_value < 0x80; } + // Returns true if the character is representable as a single byte in the + // current locale encoding and return this byte in output argument c (which + // must be non-NULL) + bool GetAsChar(char *c) const + { +#if wxUSE_UNICODE + if ( !IsAscii() ) + { +#if !wxUSE_UTF8_LOCALE_ONLY + if ( GetAsHi8bit(m_value, c) ) + return true; +#endif // !wxUSE_UTF8_LOCALE_ONLY + + return false; + } +#endif // wxUSE_UNICODE + + *c = wx_truncate_cast(char, m_value); + return true; + } + // 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 (wchar_t)m_value; } -#endif - operator int() const { return (int)m_value; } - operator unsigned int() const { return (unsigned int)m_value; } - operator long int() const { return (long int)m_value; } - operator unsigned long int() const { return (unsigned long)m_value; } - operator short int() const { return (short int)m_value; } - operator unsigned short int() const { return (unsigned short int)m_value; } + +#define wxUNICHAR_DEFINE_OPERATOR_PAREN(type) \ + operator type() const { return (type)m_value; } + wxDO_FOR_INT_TYPES(wxUNICHAR_DEFINE_OPERATOR_PAREN) +#undef wxUNICHAR_DEFINE_OPERATOR_PAREN // We need this operator for the "*p" part of expressions like "for ( // const_iterator p = begin() + nStart; *p; ++p )". In this case, @@ -114,37 +105,31 @@ public: 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=(const wxUniChar& c) { if (&c != this) m_value = c.m_value; return *this; } + wxUniChar& operator=(const wxUniCharRef& c); 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; } + +#define wxUNICHAR_DEFINE_OPERATOR_EQUAL(type) \ + wxUniChar& operator=(type c) { m_value = (value_type)c; return *this; } + wxDO_FOR_INT_TYPES(wxUNICHAR_DEFINE_OPERATOR_EQUAL) +#undef wxUNICHAR_DEFINE_OPERATOR_EQUAL // Comparison operators: +#define wxDEFINE_UNICHAR_CMP_WITH_INT(T, op) \ + bool operator op(T c) const { return m_value op (value_type)c; } // 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; } + wxDO_FOR_INT_TYPES_1(wxDEFINE_UNICHAR_CMP_WITH_INT, op) wxFOR_ALL_COMPARISONS(wxDEFINE_UNICHAR_OPERATOR) #undef wxDEFINE_UNICHAR_OPERATOR +#undef wxDEFINE_UNCHAR_CMP_WITH_INT // this is needed for expressions like 'Z'-c int operator-(const wxUniChar& c) const { return m_value - c.m_value; } @@ -154,8 +139,36 @@ public: private: - static value_type From8bit(char c); - static char To8bit(value_type c); + // notice that we implement these functions inline for 7-bit ASCII + // characters purely for performance reasons + static value_type From8bit(char c) + { +#if wxUSE_UNICODE + if ( (unsigned char)c < 0x80 ) + return c; + + return FromHi8bit(c); +#else + return c; +#endif + } + + static char To8bit(value_type c) + { +#if wxUSE_UNICODE + if ( c < 0x80 ) + return wx_truncate_cast(char, c); + + return ToHi8bit(c); +#else + return c; +#endif + } + + // helpers of the functions above called to deal with non-ASCII chars + static value_type FromHi8bit(char c); + static char ToHi8bit(value_type v); + static bool GetAsHi8bit(value_type v, char *c); private: value_type m_value; @@ -173,7 +186,7 @@ private: // create the reference #if wxUSE_UNICODE_UTF8 - wxUniCharRef(wxStringIteratorNode& node, iterator pos) : m_node(node), m_pos(pos) {} + wxUniCharRef(wxString& str, iterator pos) : m_str(str), m_pos(pos) {} #else wxUniCharRef(iterator pos) : m_pos(pos) {} #endif @@ -185,8 +198,8 @@ public: // 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); } + static wxUniCharRef CreateForString(wxString& str, iterator pos) + { return wxUniCharRef(str, pos); } #else static wxUniCharRef CreateForString(iterator pos) { return wxUniCharRef(pos); } @@ -199,6 +212,7 @@ public: #endif // wxUSE_UNICODE_UTF8 bool IsAscii() const { return UniChar().IsAscii(); } + bool GetAsChar(char *c) const { return UniChar().GetAsChar(c); } // Assignment operators: #if wxUSE_UNICODE_UTF8 @@ -208,55 +222,37 @@ public: #endif wxUniCharRef& operator=(const wxUniCharRef& c) - { return *this = c.UniChar(); } + { if (&c != this) *this = c.UniChar(); return *this; } - 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); } +#define wxUNICHAR_REF_DEFINE_OPERATOR_EQUAL(type) \ + wxUniCharRef& operator=(type c) { return *this = wxUniChar(c); } + wxDO_FOR_CHAR_INT_TYPES(wxUNICHAR_REF_DEFINE_OPERATOR_EQUAL) +#undef wxUNICHAR_REF_DEFINE_OPERATOR_EQUAL // 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(); } +#define wxUNICHAR_REF_DEFINE_OPERATOR_PAREN(type) \ + operator type() const { return UniChar(); } + wxDO_FOR_CHAR_INT_TYPES(wxUNICHAR_REF_DEFINE_OPERATOR_PAREN) +#undef wxUNICHAR_REF_DEFINE_OPERATOR_PAREN // 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; } +#define wxDEFINE_UNICHARREF_CMP_WITH_INT(T, op) \ + bool operator op(T c) const { return UniChar() op c; } + // 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; } + wxDO_FOR_CHAR_INT_TYPES_1(wxDEFINE_UNICHARREF_CMP_WITH_INT, op) wxFOR_ALL_COMPARISONS(wxDEFINE_UNICHARREF_OPERATOR) #undef wxDEFINE_UNICHARREF_OPERATOR +#undef wxDEFINE_UNICHARREF_CMP_WITH_INT // for expressions like c-'A': int operator-(const wxUniCharRef& c) const { return UniChar() - c.UniChar(); } @@ -272,12 +268,12 @@ private: wxUniChar UniChar() const { return *m_pos; } #endif - friend class WXDLLIMPEXP_BASE wxUniChar; + friend class WXDLLIMPEXP_FWD_BASE wxUniChar; private: // reference to the string and pointer to the character in string #if wxUSE_UNICODE_UTF8 - wxStringIteratorNode& m_node; + wxString& m_str; #endif iterator m_pos; }; @@ -287,20 +283,22 @@ inline wxUniChar::wxUniChar(const wxUniCharRef& c) m_value = c.UniChar().m_value; } +inline wxUniChar& wxUniChar::operator=(const wxUniCharRef& c) +{ + m_value = c.UniChar().m_value; + return *this; +} + // 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_BY_REV(char, const wxUniChar&) +wxDEFINE_COMPARISONS_BY_REV(char, const wxUniCharRef&) -wxDEFINE_COMPARISONS(const wxUniChar&, const wxUniCharRef&, wxCMP_REVERSE) +wxDEFINE_COMPARISONS_BY_REV(wchar_t, const wxUniChar&) +wxDEFINE_COMPARISONS_BY_REV(wchar_t, const wxUniCharRef&) -#undef wxCMP_REVERSE +wxDEFINE_COMPARISONS_BY_REV(const wxUniChar&, const wxUniCharRef&) // for expressions like c-'A': inline int operator-(char c1, const wxUniCharRef& c2) { return -(c2 - c1); }