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wxWidgets/include/wx/strvararg.h

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///////////////////////////////////////////////////////////////////////////////
// Name: wx/strvararg.h
// Purpose: macros for implementing type-safe vararg passing of strings
// Author: Vaclav Slavik
// Created: 2007-02-19
// RCS-ID: $Id$
// Copyright: (c) 2007 REA Elektronik GmbH
// Licence: wxWindows licence
///////////////////////////////////////////////////////////////////////////////
#ifndef _WX_STRVARARG_H_
#define _WX_STRVARARG_H_
#include "wx/platform.h"
#if wxONLY_WATCOM_EARLIER_THAN(1,4)
#error "OpenWatcom version >= 1.4 is required to compile this code"
#endif
#include "wx/cpp.h"
#include "wx/chartype.h"
#include "wx/strconv.h"
#include "wx/buffer.h"
#include "wx/unichar.h"
class WXDLLIMPEXP_BASE wxCStrData;
class WXDLLIMPEXP_BASE wxString;
// ----------------------------------------------------------------------------
// WX_DEFINE_VARARG_FUNC* macros
// ----------------------------------------------------------------------------
// This macro is used to implement type-safe wrappers for variadic functions
// that accept strings as arguments. This makes it possible to pass char*,
// wchar_t* or even wxString (as opposed to having to use wxString::c_str())
// to e.g. wxPrintf().
//
// This is done by defining a set of N template function taking 1..N arguments
// (currently, N is set to 30 in this header). These functions are just thin
// wrappers around another variadic function ('impl' or 'implUtf8' arguments,
// see below) and the only thing the wrapper does is that it normalizes the
// arguments passed in so that they are of the type expected by variadic
// functions taking string arguments, i.e., char* or wchar_t*, depending on the
// build:
// * char* in the current locale's charset in ANSI build
// * char* with UTF-8 encoding if wxUSE_UNICODE_UTF8 and the app is running
// under an UTF-8 locale
// * wchar_t* if wxUSE_UNICODE_WCHAR or if wxUSE_UNICODE_UTF8 and the current
// locale is not UTF-8
//
// Parameters:
// [ there are examples in square brackets showing values of the parameters
// for the wxFprintf() wrapper for fprintf() function with the following
// prototype:
// int wxFprintf(FILE *stream, const wxString& format, ...); ]
//
// rettype Functions' return type [int]
// name Name of the function [fprintf]
// numfixed The number of leading "fixed" (i.e., not variadic)
// arguments of the function (e.g. "stream" and "format"
// arguments of fprintf()); their type is _not_ converted
// using wxArgNormalizer<T>, unlike the rest of
// the function's arguments [2]
// fixed List of types of the leading "fixed" arguments, in
// parenthesis [(FILE*,const wxString&)]
// impl Name of the variadic function that implements 'name' for
// the native strings representation (wchar_t* if
// wxUSE_UNICODE_WCHAR or wxUSE_UNICODE_UTF8 when running under
// non-UTF8 locale, char* in ANSI build) [wxCrt_Fprintf]
// implUtf8 Like 'impl', but for the UTF-8 char* version to be used
// if wxUSE_UNICODE_UTF8 and running under UTF-8 locale
// (ignored otherwise) [fprintf]
//
#define WX_DEFINE_VARARG_FUNC(rettype, name, numfixed, fixed, impl, implUtf8) \
_WX_VARARG_DEFINE_FUNC_N0(rettype, name, impl, implUtf8, numfixed, fixed) \
WX_DEFINE_VARARG_FUNC_SANS_N0(rettype, name, numfixed, fixed, impl, implUtf8)
// ditto, but without the version with 0 template/vararg arguments
#define WX_DEFINE_VARARG_FUNC_SANS_N0(rettype, name, \
numfixed, fixed, impl, implUtf8) \
_WX_VARARG_ITER(_WX_VARARG_MAX_ARGS, \
_WX_VARARG_DEFINE_FUNC, \
rettype, name, impl, implUtf8, numfixed, fixed)
// Like WX_DEFINE_VARARG_FUNC, but for variadic functions that don't return
// a value.
#define WX_DEFINE_VARARG_FUNC_VOID(name, numfixed, fixed, impl, implUtf8) \
_WX_VARARG_DEFINE_FUNC_VOID_N0(name, impl, implUtf8, numfixed, fixed) \
_WX_VARARG_ITER(_WX_VARARG_MAX_ARGS, \
_WX_VARARG_DEFINE_FUNC_VOID, \
void, name, impl, implUtf8, numfixed, fixed)
// Like WX_DEFINE_VARARG_FUNC_VOID, but instead of wrapping an implementation
// function, does nothing in defined functions' bodies.
//
// Used to implement wxLogXXX functions if wxUSE_LOG=0.
#define WX_DEFINE_VARARG_FUNC_NOP(name, numfixed, fixed) \
_WX_VARARG_DEFINE_FUNC_NOP_N0(name, numfixed, fixed) \
_WX_VARARG_ITER(_WX_VARARG_MAX_ARGS, \
_WX_VARARG_DEFINE_FUNC_NOP, \
void, name, dummy, dummy, numfixed, fixed)
// Like WX_DEFINE_VARARG_FUNC_CTOR, but for defining template constructors
#define WX_DEFINE_VARARG_FUNC_CTOR(name, numfixed, fixed, impl, implUtf8) \
_WX_VARARG_DEFINE_FUNC_CTOR_N0(name, impl, implUtf8, numfixed, fixed) \
_WX_VARARG_ITER(_WX_VARARG_MAX_ARGS, \
_WX_VARARG_DEFINE_FUNC_CTOR, \
void, name, impl, implUtf8, numfixed, fixed)
// ----------------------------------------------------------------------------
// wxFormatString
// ----------------------------------------------------------------------------
// This class should be used for format string argument of the functions
// defined using WX_DEFINE_VARARG_FUNC_* macros. It converts the string to
// char* or wchar_t* for passing to implementation function efficiently (i.e.
// without keeping the converted string in memory for longer than necessary,
// like c_str())
//
// Note that this class can _only_ be used for function arguments!
class WXDLLIMPEXP_BASE wxFormatString
{
public:
wxFormatString(const char *str)
: m_char(wxCharBuffer::CreateNonOwned(str)), m_str(NULL), m_cstr(NULL) {}
wxFormatString(const wchar_t *str)
: m_wchar(wxWCharBuffer::CreateNonOwned(str)), m_str(NULL), m_cstr(NULL) {}
wxFormatString(const wxString& str)
: m_str(&str), m_cstr(NULL) {}
wxFormatString(const wxCStrData& str)
: m_str(NULL), m_cstr(&str) {}
wxFormatString(const wxCharBuffer& str)
: m_char(str), m_str(NULL), m_cstr(NULL) {}
wxFormatString(const wxWCharBuffer& str)
: m_wchar(str), m_str(NULL), m_cstr(NULL) {}
#if !wxUSE_UNICODE_WCHAR
operator const char*() const
{ return wx_const_cast(wxFormatString*, this)->AsChar(); }
private:
const char* AsChar();
#endif // !wxUSE_UNICODE_WCHAR
#if wxUSE_UNICODE && !wxUSE_UTF8_LOCALE_ONLY
public:
operator const wchar_t*() const
{ return wx_const_cast(wxFormatString*, this)->AsWChar(); }
private:
const wchar_t* AsWChar();
#endif // wxUSE_UNICODE && !wxUSE_UTF8_LOCALE_ONLY
private:
wxCharBuffer m_char;
wxWCharBuffer m_wchar;
// NB: we can use a pointer here, because wxFormatString is only used
// as function argument, so it has shorter life than the string
// passed to the ctor
const wxString * const m_str;
const wxCStrData * const m_cstr;
DECLARE_NO_COPY_CLASS(wxFormatString)
};
// ----------------------------------------------------------------------------
// wxArgNormalizer*<T> converters
// ----------------------------------------------------------------------------
// Converts an argument passed to wxPrint etc. into standard form expected,
// by wxXXX functions, e.g. all strings (wxString, char*, wchar_t*) are
// converted into wchar_t* or char* depending on the build.
template<typename T>
struct wxArgNormalizer
{
wxArgNormalizer(const T& value) : m_value(value) {}
// Returns the value in a form that can be safely passed to real vararg
// functions. In case of strings, this is char* in ANSI build and wchar_t*
// in Unicode build.
T get() const { return m_value; }
T m_value;
};
// normalizer for passing arguments to functions working with wchar_t* (and
// until ANSI build is removed, char* in ANSI build as well - FIXME-UTF8)
// string representation
#if !wxUSE_UTF8_LOCALE_ONLY
template<typename T>
struct wxArgNormalizerWchar : public wxArgNormalizer<T>
{
wxArgNormalizerWchar(const T& value) : wxArgNormalizer<T>(value) {}
};
#endif // !wxUSE_UTF8_LOCALE_ONLY
// normalizer for passing arguments to functions working with UTF-8 encoded
// char* strings
#if wxUSE_UNICODE_UTF8
template<typename T>
struct wxArgNormalizerUtf8 : public wxArgNormalizer<T>
{
wxArgNormalizerUtf8(const T& value) : wxArgNormalizer<T>(value) {}
};
#define wxArgNormalizerNative wxArgNormalizerUtf8
#else // wxUSE_UNICODE_WCHAR
#define wxArgNormalizerNative wxArgNormalizerWchar
#endif // wxUSE_UNICODE_UTF8 // wxUSE_UNICODE_UTF8
// special cases for converting strings:
// base class for wxArgNormalizer<T> specializations that need to do conversion;
// CharType is either wxStringCharType or wchar_t in UTF-8 build when wrapping
// widechar CRT function
template<typename CharType>
struct wxArgNormalizerWithBuffer
{
typedef wxCharTypeBuffer<CharType> CharBuffer;
wxArgNormalizerWithBuffer() {}
wxArgNormalizerWithBuffer(const CharBuffer& buf) : m_value(buf) {}
const CharType *get() const { return m_value; }
CharBuffer m_value;
};
// string objects:
template<>
struct WXDLLIMPEXP_BASE wxArgNormalizerNative<const wxString&>
{
wxArgNormalizerNative(const wxString& s) : m_value(s) {}
const wxStringCharType *get() const;
const wxString& m_value;
};
// c_str() values:
template<>
struct WXDLLIMPEXP_BASE wxArgNormalizerNative<const wxCStrData&>
{
wxArgNormalizerNative(const wxCStrData& value) : m_value(value) {}
const wxStringCharType *get() const;
const wxCStrData& m_value;
};
// wxString/wxCStrData conversion to wchar_t* value
#if wxUSE_UNICODE_UTF8 && !wxUSE_UTF8_LOCALE_ONLY
template<>
struct WXDLLIMPEXP_BASE wxArgNormalizerWchar<const wxString&>
: public wxArgNormalizerWithBuffer<wchar_t>
{
wxArgNormalizerWchar(const wxString& s);
};
template<>
struct WXDLLIMPEXP_BASE wxArgNormalizerWchar<const wxCStrData&>
: public wxArgNormalizerWithBuffer<wchar_t>
{
wxArgNormalizerWchar(const wxCStrData& s);
};
#endif // wxUSE_UNICODE_UTF8 && !wxUSE_UTF8_LOCALE_ONLY
// C string pointers of the wrong type (wchar_t* for ANSI or UTF8 build,
// char* for wchar_t Unicode build or UTF8):
#if wxUSE_UNICODE_WCHAR
template<>
struct wxArgNormalizerWchar<const char*>
: public wxArgNormalizerWithBuffer<wchar_t>
{
wxArgNormalizerWchar(const char* s)
: wxArgNormalizerWithBuffer<wchar_t>(wxConvLibc.cMB2WC(s)) {}
};
#elif wxUSE_UNICODE_UTF8
template<>
struct wxArgNormalizerUtf8<const wchar_t*>
: public wxArgNormalizerWithBuffer<char>
{
wxArgNormalizerUtf8(const wchar_t* s)
: wxArgNormalizerWithBuffer<char>(wxConvUTF8.cWC2MB(s)) {}
};
template<>
struct wxArgNormalizerUtf8<const char*>
: public wxArgNormalizerWithBuffer<char>
{
wxArgNormalizerUtf8(const char* s)
{
if ( wxLocaleIsUtf8 )
{
m_value = wxCharBuffer::CreateNonOwned(s);
}
else
{
// convert to widechar string first:
wxWCharBuffer buf(wxConvLibc.cMB2WC(s));
// then to UTF-8:
if ( buf )
m_value = wxConvUTF8.cWC2MB(buf);
}
}
};
// UTF-8 build needs conversion to wchar_t* too:
#if !wxUSE_UTF8_LOCALE_ONLY
template<>
struct wxArgNormalizerWchar<const char*>
: public wxArgNormalizerWithBuffer<wchar_t>
{
wxArgNormalizerWchar(const char* s)
: wxArgNormalizerWithBuffer<wchar_t>(wxConvLibc.cMB2WC(s)) {}
};
#endif // !wxUSE_UTF8_LOCALE_ONLY
#else // ANSI - FIXME-UTF8
template<>
struct wxArgNormalizerWchar<const wchar_t*>
: public wxArgNormalizerWithBuffer<char>
{
wxArgNormalizerWchar(const wchar_t* s)
: wxArgNormalizerWithBuffer<char>(wxConvLibc.cWC2MB(s)) {}
};
#endif // wxUSE_UNICODE_WCHAR/wxUSE_UNICODE_UTF8/ANSI
// this macro is used to implement specialization that are exactly same as
// some other specialization, i.e. to "forward" the implementation (e.g. for
// T=wxString and T=const wxString&). Note that the ctor takes BaseT argument,
// not T!
#if wxUSE_UNICODE_UTF8
#if wxUSE_UTF8_LOCALE_ONLY
#define WX_ARG_NORMALIZER_FORWARD(T, BaseT) \
_WX_ARG_NORMALIZER_FORWARD_IMPL(wxArgNormalizerUtf8, T, BaseT)
#else // possibly non-UTF8 locales
#define WX_ARG_NORMALIZER_FORWARD(T, BaseT) \
_WX_ARG_NORMALIZER_FORWARD_IMPL(wxArgNormalizerWchar, T, BaseT); \
_WX_ARG_NORMALIZER_FORWARD_IMPL(wxArgNormalizerUtf8, T, BaseT)
#endif
#else // wxUSE_UNICODE_WCHAR
#define WX_ARG_NORMALIZER_FORWARD(T, BaseT) \
_WX_ARG_NORMALIZER_FORWARD_IMPL(wxArgNormalizerWchar, T, BaseT)
#endif // wxUSE_UNICODE_UTF8/wxUSE_UNICODE_WCHAR
#define _WX_ARG_NORMALIZER_FORWARD_IMPL(Normalizer, T, BaseT) \
template<> \
struct Normalizer<T> : public Normalizer<BaseT> \
{ \
Normalizer(BaseT value) : Normalizer<BaseT>(value) {} \
}
// non-reference versions of specializations for string objects
WX_ARG_NORMALIZER_FORWARD(wxString, const wxString&);
WX_ARG_NORMALIZER_FORWARD(wxCStrData, const wxCStrData&);
// versions for passing non-const pointers:
WX_ARG_NORMALIZER_FORWARD(char*, const char*);
WX_ARG_NORMALIZER_FORWARD(wchar_t*, const wchar_t*);
// versions for passing wx[W]CharBuffer:
WX_ARG_NORMALIZER_FORWARD(wxCharBuffer, const char*);
WX_ARG_NORMALIZER_FORWARD(const wxCharBuffer&, const char*);
WX_ARG_NORMALIZER_FORWARD(wxWCharBuffer, const wchar_t*);
WX_ARG_NORMALIZER_FORWARD(const wxWCharBuffer&, const wchar_t*);
// versions for std::[w]string:
#if wxUSE_STD_STRING
#include "wx/stringimpl.h"
#if !wxUSE_UTF8_LOCALE_ONLY
template<>
struct wxArgNormalizerWchar<const std::string&>
: public wxArgNormalizerWchar<const char*>
{
wxArgNormalizerWchar(const std::string& s)
: wxArgNormalizerWchar<const char*>(s.c_str()) {}
};
template<>
struct wxArgNormalizerWchar<const wxStdWideString&>
: public wxArgNormalizerWchar<const wchar_t*>
{
wxArgNormalizerWchar(const wxStdWideString& s)
: wxArgNormalizerWchar<const wchar_t*>(s.c_str()) {}
};
#endif // !wxUSE_UTF8_LOCALE_ONLY
#if wxUSE_UNICODE_UTF8
template<>
struct wxArgNormalizerUtf8<const std::string&>
: public wxArgNormalizerUtf8<const char*>
{
wxArgNormalizerUtf8(const std::string& s)
: wxArgNormalizerUtf8<const char*>(s.c_str()) {}
};
template<>
struct wxArgNormalizerUtf8<const wxStdWideString&>
: public wxArgNormalizerUtf8<const wchar_t*>
{
wxArgNormalizerUtf8(const wxStdWideString& s)
: wxArgNormalizerUtf8<const wchar_t*>(s.c_str()) {}
};
#endif // wxUSE_UNICODE_UTF8
WX_ARG_NORMALIZER_FORWARD(std::string, const std::string&);
WX_ARG_NORMALIZER_FORWARD(wxStdWideString, const wxStdWideString&);
#endif // wxUSE_STD_STRING
// versions for wxUniChar, wxUniCharRef:
#if !wxUSE_UTF8_LOCALE_ONLY
template<>
struct wxArgNormalizerWchar<const wxUniChar&>
: public wxArgNormalizerWchar<wxChar/*FIXME-UTF8: should be wchar_t after ANSI removal*/>
{
wxArgNormalizerWchar(const wxUniChar& s)
: wxArgNormalizerWchar<wxChar>((wxChar)s) {}
};
#endif // !wxUSE_UTF8_LOCALE_ONLY
#if wxUSE_UNICODE_UTF8
template<>
struct wxArgNormalizerUtf8<const wxUniChar&>
: public wxArgNormalizerUtf8<char>
{
wxArgNormalizerUtf8(const wxUniChar& s)
// FIXME-UTF8: this is lossy, we need to convert to string, but that
// requires format string update
: wxArgNormalizerUtf8<char>((const char)s) {}
};
#endif // wxUSE_UNICODE_UTF8
WX_ARG_NORMALIZER_FORWARD(wxUniChar, const wxUniChar&);
WX_ARG_NORMALIZER_FORWARD(const wxUniCharRef&, const wxUniChar&);
WX_ARG_NORMALIZER_FORWARD(wxUniCharRef, const wxUniChar&);
#undef WX_ARG_NORMALIZER_FORWARD
#undef _WX_ARG_NORMALIZER_FORWARD_IMPL
// ----------------------------------------------------------------------------
// WX_VA_ARG_STRING
// ----------------------------------------------------------------------------
// Replacement for va_arg() for use with strings in functions that accept
// strings normalized by wxArgNormalizer<T>:
struct WXDLLIMPEXP_BASE wxArgNormalizedString
{
wxArgNormalizedString(const void* ptr) : m_ptr(ptr) {}
// returns true if non-NULL string was passed in
bool IsValid() const { return m_ptr != NULL; }
operator bool() const { return IsValid(); }
// extracts the string, returns empty string if NULL was passed in
wxString GetString() const;
operator wxString() const;
private:
const void *m_ptr;
};
#define WX_VA_ARG_STRING(ap) wxArgNormalizedString(va_arg(ap, const void*))
// ----------------------------------------------------------------------------
// implementation of the WX_DEFINE_VARARG_* macros
// ----------------------------------------------------------------------------
// NB: The vararg emulation code is limited to 30 variadic and 4 fixed
// arguments at the moment.
// If you need more variadic arguments, you need to
// 1) increase the value of _WX_VARARG_MAX_ARGS
// 2) add _WX_VARARG_JOIN_* and _WX_VARARG_ITER_* up to the new
// _WX_VARARG_MAX_ARGS value to the lists below
// If you need more fixed arguments, you need to
// 1) increase the value of _WX_VARARG_MAX_FIXED_ARGS
// 2) add _WX_VARARG_FIXED_EXPAND_* and _WX_VARARG_FIXED_UNUSED_EXPAND_*
// macros below
#define _WX_VARARG_MAX_ARGS 30
#define _WX_VARARG_MAX_FIXED_ARGS 4
#define _WX_VARARG_JOIN_1(m) m(1)
#define _WX_VARARG_JOIN_2(m) _WX_VARARG_JOIN_1(m), m(2)
#define _WX_VARARG_JOIN_3(m) _WX_VARARG_JOIN_2(m), m(3)
#define _WX_VARARG_JOIN_4(m) _WX_VARARG_JOIN_3(m), m(4)
#define _WX_VARARG_JOIN_5(m) _WX_VARARG_JOIN_4(m), m(5)
#define _WX_VARARG_JOIN_6(m) _WX_VARARG_JOIN_5(m), m(6)
#define _WX_VARARG_JOIN_7(m) _WX_VARARG_JOIN_6(m), m(7)
#define _WX_VARARG_JOIN_8(m) _WX_VARARG_JOIN_7(m), m(8)
#define _WX_VARARG_JOIN_9(m) _WX_VARARG_JOIN_8(m), m(9)
#define _WX_VARARG_JOIN_10(m) _WX_VARARG_JOIN_9(m), m(10)
#define _WX_VARARG_JOIN_11(m) _WX_VARARG_JOIN_10(m), m(11)
#define _WX_VARARG_JOIN_12(m) _WX_VARARG_JOIN_11(m), m(12)
#define _WX_VARARG_JOIN_13(m) _WX_VARARG_JOIN_12(m), m(13)
#define _WX_VARARG_JOIN_14(m) _WX_VARARG_JOIN_13(m), m(14)
#define _WX_VARARG_JOIN_15(m) _WX_VARARG_JOIN_14(m), m(15)
#define _WX_VARARG_JOIN_16(m) _WX_VARARG_JOIN_15(m), m(16)
#define _WX_VARARG_JOIN_17(m) _WX_VARARG_JOIN_16(m), m(17)
#define _WX_VARARG_JOIN_18(m) _WX_VARARG_JOIN_17(m), m(18)
#define _WX_VARARG_JOIN_19(m) _WX_VARARG_JOIN_18(m), m(19)
#define _WX_VARARG_JOIN_20(m) _WX_VARARG_JOIN_19(m), m(20)
#define _WX_VARARG_JOIN_21(m) _WX_VARARG_JOIN_20(m), m(21)
#define _WX_VARARG_JOIN_22(m) _WX_VARARG_JOIN_21(m), m(22)
#define _WX_VARARG_JOIN_23(m) _WX_VARARG_JOIN_22(m), m(23)
#define _WX_VARARG_JOIN_24(m) _WX_VARARG_JOIN_23(m), m(24)
#define _WX_VARARG_JOIN_25(m) _WX_VARARG_JOIN_24(m), m(25)
#define _WX_VARARG_JOIN_26(m) _WX_VARARG_JOIN_25(m), m(26)
#define _WX_VARARG_JOIN_27(m) _WX_VARARG_JOIN_26(m), m(27)
#define _WX_VARARG_JOIN_28(m) _WX_VARARG_JOIN_27(m), m(28)
#define _WX_VARARG_JOIN_29(m) _WX_VARARG_JOIN_28(m), m(29)
#define _WX_VARARG_JOIN_30(m) _WX_VARARG_JOIN_29(m), m(30)
#define _WX_VARARG_ITER_1(m,a,b,c,d,e,f) m(1,a,b,c,d,e,f)
#define _WX_VARARG_ITER_2(m,a,b,c,d,e,f) _WX_VARARG_ITER_1(m,a,b,c,d,e,f) m(2,a,b,c,d,e,f)
#define _WX_VARARG_ITER_3(m,a,b,c,d,e,f) _WX_VARARG_ITER_2(m,a,b,c,d,e,f) m(3,a,b,c,d,e,f)
#define _WX_VARARG_ITER_4(m,a,b,c,d,e,f) _WX_VARARG_ITER_3(m,a,b,c,d,e,f) m(4,a,b,c,d,e,f)
#define _WX_VARARG_ITER_5(m,a,b,c,d,e,f) _WX_VARARG_ITER_4(m,a,b,c,d,e,f) m(5,a,b,c,d,e,f)
#define _WX_VARARG_ITER_6(m,a,b,c,d,e,f) _WX_VARARG_ITER_5(m,a,b,c,d,e,f) m(6,a,b,c,d,e,f)
#define _WX_VARARG_ITER_7(m,a,b,c,d,e,f) _WX_VARARG_ITER_6(m,a,b,c,d,e,f) m(7,a,b,c,d,e,f)
#define _WX_VARARG_ITER_8(m,a,b,c,d,e,f) _WX_VARARG_ITER_7(m,a,b,c,d,e,f) m(8,a,b,c,d,e,f)
#define _WX_VARARG_ITER_9(m,a,b,c,d,e,f) _WX_VARARG_ITER_8(m,a,b,c,d,e,f) m(9,a,b,c,d,e,f)
#define _WX_VARARG_ITER_10(m,a,b,c,d,e,f) _WX_VARARG_ITER_9(m,a,b,c,d,e,f) m(10,a,b,c,d,e,f)
#define _WX_VARARG_ITER_11(m,a,b,c,d,e,f) _WX_VARARG_ITER_10(m,a,b,c,d,e,f) m(11,a,b,c,d,e,f)
#define _WX_VARARG_ITER_12(m,a,b,c,d,e,f) _WX_VARARG_ITER_11(m,a,b,c,d,e,f) m(12,a,b,c,d,e,f)
#define _WX_VARARG_ITER_13(m,a,b,c,d,e,f) _WX_VARARG_ITER_12(m,a,b,c,d,e,f) m(13,a,b,c,d,e,f)
#define _WX_VARARG_ITER_14(m,a,b,c,d,e,f) _WX_VARARG_ITER_13(m,a,b,c,d,e,f) m(14,a,b,c,d,e,f)
#define _WX_VARARG_ITER_15(m,a,b,c,d,e,f) _WX_VARARG_ITER_14(m,a,b,c,d,e,f) m(15,a,b,c,d,e,f)
#define _WX_VARARG_ITER_16(m,a,b,c,d,e,f) _WX_VARARG_ITER_15(m,a,b,c,d,e,f) m(16,a,b,c,d,e,f)
#define _WX_VARARG_ITER_17(m,a,b,c,d,e,f) _WX_VARARG_ITER_16(m,a,b,c,d,e,f) m(17,a,b,c,d,e,f)
#define _WX_VARARG_ITER_18(m,a,b,c,d,e,f) _WX_VARARG_ITER_17(m,a,b,c,d,e,f) m(18,a,b,c,d,e,f)
#define _WX_VARARG_ITER_19(m,a,b,c,d,e,f) _WX_VARARG_ITER_18(m,a,b,c,d,e,f) m(19,a,b,c,d,e,f)
#define _WX_VARARG_ITER_20(m,a,b,c,d,e,f) _WX_VARARG_ITER_19(m,a,b,c,d,e,f) m(20,a,b,c,d,e,f)
#define _WX_VARARG_ITER_21(m,a,b,c,d,e,f) _WX_VARARG_ITER_20(m,a,b,c,d,e,f) m(21,a,b,c,d,e,f)
#define _WX_VARARG_ITER_22(m,a,b,c,d,e,f) _WX_VARARG_ITER_21(m,a,b,c,d,e,f) m(22,a,b,c,d,e,f)
#define _WX_VARARG_ITER_23(m,a,b,c,d,e,f) _WX_VARARG_ITER_22(m,a,b,c,d,e,f) m(23,a,b,c,d,e,f)
#define _WX_VARARG_ITER_24(m,a,b,c,d,e,f) _WX_VARARG_ITER_23(m,a,b,c,d,e,f) m(24,a,b,c,d,e,f)
#define _WX_VARARG_ITER_25(m,a,b,c,d,e,f) _WX_VARARG_ITER_24(m,a,b,c,d,e,f) m(25,a,b,c,d,e,f)
#define _WX_VARARG_ITER_26(m,a,b,c,d,e,f) _WX_VARARG_ITER_25(m,a,b,c,d,e,f) m(26,a,b,c,d,e,f)
#define _WX_VARARG_ITER_27(m,a,b,c,d,e,f) _WX_VARARG_ITER_26(m,a,b,c,d,e,f) m(27,a,b,c,d,e,f)
#define _WX_VARARG_ITER_28(m,a,b,c,d,e,f) _WX_VARARG_ITER_27(m,a,b,c,d,e,f) m(28,a,b,c,d,e,f)
#define _WX_VARARG_ITER_29(m,a,b,c,d,e,f) _WX_VARARG_ITER_28(m,a,b,c,d,e,f) m(29,a,b,c,d,e,f)
#define _WX_VARARG_ITER_30(m,a,b,c,d,e,f) _WX_VARARG_ITER_29(m,a,b,c,d,e,f) m(30,a,b,c,d,e,f)
#define _WX_VARARG_FIXED_EXPAND_1(t1) \
t1 f1
#define _WX_VARARG_FIXED_EXPAND_2(t1,t2) \
t1 f1, t2 f2
#define _WX_VARARG_FIXED_EXPAND_3(t1,t2,t3) \
t1 f1, t2 f2, t3 f3
#define _WX_VARARG_FIXED_EXPAND_4(t1,t2,t3,t4) \
t1 f1, t2 f2, t3 f3, t4 f4
#define _WX_VARARG_FIXED_UNUSED_EXPAND_1(t1) \
t1 WXUNUSED(f1)
#define _WX_VARARG_FIXED_UNUSED_EXPAND_2(t1,t2) \
t1 WXUNUSED(f1), t2 WXUNUSED(f2)
#define _WX_VARARG_FIXED_UNUSED_EXPAND_3(t1,t2,t3) \
t1 WXUNUSED(f1), t2 WXUNUSED(f2), t3 WXUNUSED(f3)
#define _WX_VARARG_FIXED_UNUSED_EXPAND_4(t1,t2,t3,t4) \
t1 WXUNUSED(f1), t2 WXUNUSED(f2), t3 WXUNUSED(f3), t4 WXUNUSED(f4)
// This macro expands N-items tuple of fixed arguments types into part of
// function's declaration. For example,
// "_WX_VARARG_FIXED_EXPAND(3, (int, char*, int))" expands into
// "int f1, char* f2, int f3".
#define _WX_VARARG_FIXED_EXPAND(N, args) \
_WX_VARARG_FIXED_EXPAND_IMPL(N, args)
#define _WX_VARARG_FIXED_EXPAND_IMPL(N, args) \
_WX_VARARG_FIXED_EXPAND_##N args
// Ditto for unused arguments
#define _WX_VARARG_FIXED_UNUSED_EXPAND(N, args) \
_WX_VARARG_FIXED_UNUSED_EXPAND_IMPL(N, args)
#define _WX_VARARG_FIXED_UNUSED_EXPAND_IMPL(N, args) \
_WX_VARARG_FIXED_UNUSED_EXPAND_##N args
// This macro calls another macro 'm' passed as second argument 'N' times,
// with its only argument set to 1..N, and concatenates the results using
// comma as separator.
//
// An example:
// #define foo(i) x##i
// // this expands to "x1,x2,x3,x4"
// _WX_VARARG_JOIN(4, foo)
//
//
// N must not be greater than _WX_VARARG_MAX_ARGS (=30).
#define _WX_VARARG_JOIN(N, m) _WX_VARARG_JOIN_IMPL(N, m)
#define _WX_VARARG_JOIN_IMPL(N, m) _WX_VARARG_JOIN_##N(m)
// This macro calls another macro 'm' passed as second argument 'N' times, with
// its first argument set to 1..N and the remaining arguments set to 'a', 'b',
// 'c', 'd', 'e' and 'f'. The results are separated with whitespace in the
// expansion.
//
// An example:
// // this macro expands to:
// // foo(1,a,b,c,d,e,f)
// // foo(2,a,b,c,d,e,f)
// // foo(3,a,b,c,d,e,f)
// _WX_VARARG_ITER(3, foo, a, b, c, d, e, f)
//
// N must not be greater than _WX_VARARG_MAX_ARGS (=30).
#define _WX_VARARG_ITER(N,m,a,b,c,d,e,f) \
_WX_VARARG_ITER_IMPL(N,m,a,b,c,d,e,f)
#define _WX_VARARG_ITER_IMPL(N,m,a,b,c,d,e,f) \
_WX_VARARG_ITER_##N(m,a,b,c,d,e,f)
// Generates code snippet for i-th "variadic" argument in vararg function's
// prototype:
#define _WX_VARARG_ARG(i) T##i a##i
// Like _WX_VARARG_ARG_UNUSED, but outputs argument's type with WXUNUSED:
#define _WX_VARARG_ARG_UNUSED(i) T##i WXUNUSED(a##i)
// Generates code snippet for i-th type in vararg function's template<...>:
#define _WX_VARARG_TEMPL(i) typename T##i
// Generates code snippet for passing i-th argument of vararg function
// wrapper to its implementation, normalizing it in the process:
#define _WX_VARARG_PASS_WCHAR(i) wxArgNormalizerWchar<T##i>(a##i).get()
#define _WX_VARARG_PASS_UTF8(i) wxArgNormalizerUtf8<T##i>(a##i).get()
// And the same for fixed arguments, _not_ normalizing it:
// FIXME-UTF8: this works, but uses wxString's implicit conversion to wxChar*
// for the 'format' argument (which is const wxString&) _if_ the
// implementation function has C sting argument; we need to
// have wxFixedArgNormalizer<T> here that will pass everything
// as-is except for wxString (for which wx_str() would be used),
// but OTOH, we don't want to do that if the implementation takes
// wxString argument
#define _WX_VARARG_PASS_FIXED(i) f##i
#if wxUSE_UNICODE_UTF8
#define _WX_VARARG_DO_CALL_UTF8(return_kw, impl, implUtf8, N, numfixed) \
return_kw implUtf8(_WX_VARARG_JOIN(numfixed, _WX_VARARG_PASS_FIXED), \
_WX_VARARG_JOIN(N, _WX_VARARG_PASS_UTF8))
#define _WX_VARARG_DO_CALL0_UTF8(return_kw, impl, implUtf8, numfixed) \
return_kw implUtf8(_WX_VARARG_JOIN(numfixed, _WX_VARARG_PASS_FIXED))
#endif // wxUSE_UNICODE_UTF8
#define _WX_VARARG_DO_CALL_WCHAR(return_kw, impl, implUtf8, N, numfixed) \
return_kw impl(_WX_VARARG_JOIN(numfixed, _WX_VARARG_PASS_FIXED), \
_WX_VARARG_JOIN(N, _WX_VARARG_PASS_WCHAR))
#define _WX_VARARG_DO_CALL0_WCHAR(return_kw, impl, implUtf8, numfixed) \
return_kw impl(_WX_VARARG_JOIN(numfixed, _WX_VARARG_PASS_FIXED))
#if wxUSE_UNICODE_UTF8
#if wxUSE_UTF8_LOCALE_ONLY
#define _WX_VARARG_DO_CALL _WX_VARARG_DO_CALL_UTF8
#define _WX_VARARG_DO_CALL0 _WX_VARARG_DO_CALL0_UTF8
#else // possibly non-UTF8 locales
#define _WX_VARARG_DO_CALL(return_kw, impl, implUtf8, N, numfixed) \
if ( wxLocaleIsUtf8 ) \
_WX_VARARG_DO_CALL_UTF8(return_kw, impl, implUtf8, N, numfixed);\
else \
_WX_VARARG_DO_CALL_WCHAR(return_kw, impl, implUtf8, N, numfixed)
#define _WX_VARARG_DO_CALL0(return_kw, impl, implUtf8, numfixed) \
if ( wxLocaleIsUtf8 ) \
_WX_VARARG_DO_CALL0_UTF8(return_kw, impl, implUtf8, numfixed); \
else \
_WX_VARARG_DO_CALL0_WCHAR(return_kw, impl, implUtf8, numfixed)
#endif // wxUSE_UTF8_LOCALE_ONLY or not
#else // wxUSE_UNICODE_WCHAR or ANSI
#define _WX_VARARG_DO_CALL _WX_VARARG_DO_CALL_WCHAR
#define _WX_VARARG_DO_CALL0 _WX_VARARG_DO_CALL0_WCHAR
#endif // wxUSE_UNICODE_UTF8 / wxUSE_UNICODE_WCHAR
// Macro to be used with _WX_VARARG_ITER in the implementation of
// WX_DEFINE_VARARG_FUNC (see its documentation for the meaning of arguments)
#define _WX_VARARG_DEFINE_FUNC(N, rettype, name, \
impl, implUtf8, numfixed, fixed) \
template<_WX_VARARG_JOIN(N, _WX_VARARG_TEMPL)> \
rettype name(_WX_VARARG_FIXED_EXPAND(numfixed, fixed), \
_WX_VARARG_JOIN(N, _WX_VARARG_ARG)) \
{ \
_WX_VARARG_DO_CALL(return, impl, implUtf8, N, numfixed); \
}
#define _WX_VARARG_DEFINE_FUNC_N0(rettype, name, \
impl, implUtf8, numfixed, fixed) \
inline rettype name(_WX_VARARG_FIXED_EXPAND(numfixed, fixed)) \
{ \
_WX_VARARG_DO_CALL0(return, impl, implUtf8, numfixed); \
}
// Macro to be used with _WX_VARARG_ITER in the implementation of
// WX_DEFINE_VARARG_FUNC_VOID (see its documentation for the meaning of
// arguments; rettype is ignored and is used only to satisfy _WX_VARARG_ITER's
// requirements).
#define _WX_VARARG_DEFINE_FUNC_VOID(N, rettype, name, \
impl, implUtf8, numfixed, fixed) \
template<_WX_VARARG_JOIN(N, _WX_VARARG_TEMPL)> \
void name(_WX_VARARG_FIXED_EXPAND(numfixed, fixed), \
_WX_VARARG_JOIN(N, _WX_VARARG_ARG)) \
{ \
_WX_VARARG_DO_CALL(wxEMPTY_PARAMETER_VALUE, \
impl, implUtf8, N, numfixed); \
}
#define _WX_VARARG_DEFINE_FUNC_VOID_N0(name, impl, implUtf8, numfixed, fixed) \
inline void name(_WX_VARARG_FIXED_EXPAND(numfixed, fixed)) \
{ \
_WX_VARARG_DO_CALL0(wxEMPTY_PARAMETER_VALUE, \
impl, implUtf8, numfixed); \
}
// Macro to be used with _WX_VARARG_ITER in the implementation of
// WX_DEFINE_VARARG_FUNC_CTOR (see its documentation for the meaning of
// arguments; rettype is ignored and is used only to satisfy _WX_VARARG_ITER's
// requirements).
#define _WX_VARARG_DEFINE_FUNC_CTOR(N, rettype, name, \
impl, implUtf8, numfixed, fixed) \
template<_WX_VARARG_JOIN(N, _WX_VARARG_TEMPL)> \
name(_WX_VARARG_FIXED_EXPAND(numfixed, fixed), \
_WX_VARARG_JOIN(N, _WX_VARARG_ARG)) \
{ \
_WX_VARARG_DO_CALL(wxEMPTY_PARAMETER_VALUE, \
impl, implUtf8, N, numfixed); \
}
#define _WX_VARARG_DEFINE_FUNC_CTOR_N0(name, impl, implUtf8, numfixed, fixed) \
inline name(_WX_VARARG_FIXED_EXPAND(numfixed, fixed)) \
{ \
_WX_VARARG_DO_CALL0(wxEMPTY_PARAMETER_VALUE, \
impl, implUtf8, numfixed); \
}
// Macro to be used with _WX_VARARG_ITER in the implementation of
// WX_DEFINE_VARARG_FUNC_NOP, i.e. empty stub for a disabled vararg function.
// The rettype and impl arguments are ignored.
#define _WX_VARARG_DEFINE_FUNC_NOP(N, rettype, name, \
impl, implUtf8, numfixed, fixed) \
template<_WX_VARARG_JOIN(N, _WX_VARARG_TEMPL)> \
void name(_WX_VARARG_FIXED_UNUSED_EXPAND(numfixed, fixed), \
_WX_VARARG_JOIN(N, _WX_VARARG_ARG_UNUSED)) \
{}
#define _WX_VARARG_DEFINE_FUNC_NOP_N0(name, numfixed, fixed) \
inline void name(_WX_VARARG_FIXED_UNUSED_EXPAND(numfixed, fixed)) \
{}
// ----------------------------------------------------------------------------
// workaround for OpenWatcom bug #351
// ----------------------------------------------------------------------------
#ifdef __WATCOMC__
// workaround for http://bugzilla.openwatcom.org/show_bug.cgi?id=351
// This macro can be used to forward a 'vararg' template to another one with
// different fixed arguments types. Parameters are same as for
// WX_DEFINE_VARARG_FUNC (rettype=void can be used here), 'convfixed' is how
// to convert fixed arguments. For example, this is typical code for dealing
// with different forms of format string:
//
// WX_DEFINE_VARARG_FUNC_VOID(Printf, 1, (const wxFormatString&),
// DoPrintfWchar, DoPrintfUtf8)
// #ifdef __WATCOMC__
// WX_VARARG_WATCOM_WORKAROUND(void, Printf, 1, (const wxString&),
// (wxFormatString(f1)))
// WX_VARARG_WATCOM_WORKAROUND(void, Printf, 1, (const char*),
// (wxFormatString(f1)))
// ...
#define WX_VARARG_WATCOM_WORKAROUND(rettype, name, numfixed, fixed, convfixed)\
_WX_VARARG_ITER(_WX_VARARG_MAX_ARGS, \
_WX_VARARG_WATCOM_WORKAROUND, \
rettype, name, convfixed, dummy, numfixed, fixed)
#define WX_VARARG_WATCOM_WORKAROUND_CTOR(name, numfixed, fixed, convfixed) \
_WX_VARARG_ITER(_WX_VARARG_MAX_ARGS, \
_WX_VARARG_WATCOM_WORKAROUND_CTOR, \
dummy, name, convfixed, dummy, numfixed, fixed)
#define _WX_VARARG_WATCOM_UNPACK_1(a1) a1
#define _WX_VARARG_WATCOM_UNPACK_2(a1, a2) a1, a2
#define _WX_VARARG_WATCOM_UNPACK_3(a1, a2, a3) a1, a2, a3
#define _WX_VARARG_WATCOM_UNPACK_4(a1, a2, a3, a4) a1, a2, a3, a4
#define _WX_VARARG_WATCOM_UNPACK(N, convfixed) \
_WX_VARARG_WATCOM_UNPACK_##N convfixed
#define _WX_VARARG_WATCOM_WORKAROUND(N, rettype, name, \
convfixed, dummy, numfixed, fixed) \
template<_WX_VARARG_JOIN(N, _WX_VARARG_TEMPL)> \
rettype name(_WX_VARARG_FIXED_EXPAND(numfixed, fixed), \
_WX_VARARG_JOIN(N, _WX_VARARG_ARG)) \
{ \
return name(_WX_VARARG_WATCOM_UNPACK(numfixed, convfixed), \
_WX_VARARG_JOIN(N, _WX_VARARG_PASS_WCHAR)); \
}
#define _WX_VARARG_WATCOM_WORKAROUND_CTOR(N, dummy1, name, \
convfixed, dummy2, numfixed, fixed) \
template<_WX_VARARG_JOIN(N, _WX_VARARG_TEMPL)> \
name(_WX_VARARG_FIXED_EXPAND(numfixed, fixed), \
_WX_VARARG_JOIN(N, _WX_VARARG_ARG)) \
{ \
name(_WX_VARARG_WATCOM_UNPACK(numfixed, convfixed), \
_WX_VARARG_JOIN(N, _WX_VARARG_PASS_WCHAR)); \
}
#endif // __WATCOMC__
#endif // _WX_STRVARARG_H_
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