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allow copying wxFormatString for compiler-generated temporaries
[wxWidgets.git] / include / wx / strvararg.h
1 ///////////////////////////////////////////////////////////////////////////////
2 // Name: wx/strvararg.h
3 // Purpose: macros for implementing type-safe vararg passing of strings
4 // Author: Vaclav Slavik
5 // Created: 2007-02-19
6 // RCS-ID: $Id$
7 // Copyright: (c) 2007 REA Elektronik GmbH
8 // Licence: wxWindows licence
9 ///////////////////////////////////////////////////////////////////////////////
10
11 #ifndef _WX_STRVARARG_H_
12 #define _WX_STRVARARG_H_
13
14 #include "wx/platform.h"
15 #if wxONLY_WATCOM_EARLIER_THAN(1,4)
16 #error "OpenWatcom version >= 1.4 is required to compile this code"
17 #endif
18
19 #include "wx/cpp.h"
20 #include "wx/chartype.h"
21 #include "wx/strconv.h"
22 #include "wx/buffer.h"
23 #include "wx/unichar.h"
24
25 class WXDLLIMPEXP_FWD_BASE wxCStrData;
26 class WXDLLIMPEXP_FWD_BASE wxString;
27
28 // ----------------------------------------------------------------------------
29 // WX_DEFINE_VARARG_FUNC* macros
30 // ----------------------------------------------------------------------------
31
32 // This macro is used to implement type-safe wrappers for variadic functions
33 // that accept strings as arguments. This makes it possible to pass char*,
34 // wchar_t* or even wxString (as opposed to having to use wxString::c_str())
35 // to e.g. wxPrintf().
36 //
37 // This is done by defining a set of N template function taking 1..N arguments
38 // (currently, N is set to 30 in this header). These functions are just thin
39 // wrappers around another variadic function ('impl' or 'implUtf8' arguments,
40 // see below) and the only thing the wrapper does is that it normalizes the
41 // arguments passed in so that they are of the type expected by variadic
42 // functions taking string arguments, i.e., char* or wchar_t*, depending on the
43 // build:
44 // * char* in the current locale's charset in ANSI build
45 // * char* with UTF-8 encoding if wxUSE_UNICODE_UTF8 and the app is running
46 // under an UTF-8 locale
47 // * wchar_t* if wxUSE_UNICODE_WCHAR or if wxUSE_UNICODE_UTF8 and the current
48 // locale is not UTF-8
49 //
50 // Note that wxFormatString *must* be used for the format parameter of these
51 // functions, otherwise the implementation won't work correctly. Furthermore,
52 // it must be passed by value, not reference, because it's modified by the
53 // vararg templates internally.
54 //
55 // Parameters:
56 // [ there are examples in square brackets showing values of the parameters
57 // for the wxFprintf() wrapper for fprintf() function with the following
58 // prototype:
59 // int wxFprintf(FILE *stream, const wxString& format, ...); ]
60 //
61 // rettype Functions' return type [int]
62 // name Name of the function [fprintf]
63 // numfixed The number of leading "fixed" (i.e., not variadic)
64 // arguments of the function (e.g. "stream" and "format"
65 // arguments of fprintf()); their type is _not_ converted
66 // using wxArgNormalizer<T>, unlike the rest of
67 // the function's arguments [2]
68 // fixed List of types of the leading "fixed" arguments, in
69 // parenthesis [(FILE*,const wxString&)]
70 // impl Name of the variadic function that implements 'name' for
71 // the native strings representation (wchar_t* if
72 // wxUSE_UNICODE_WCHAR or wxUSE_UNICODE_UTF8 when running under
73 // non-UTF8 locale, char* in ANSI build) [wxCrt_Fprintf]
74 // implUtf8 Like 'impl', but for the UTF-8 char* version to be used
75 // if wxUSE_UNICODE_UTF8 and running under UTF-8 locale
76 // (ignored otherwise) [fprintf]
77 //
78 #define WX_DEFINE_VARARG_FUNC(rettype, name, numfixed, fixed, impl, implUtf8) \
79 _WX_VARARG_DEFINE_FUNC_N0(rettype, name, impl, implUtf8, numfixed, fixed) \
80 WX_DEFINE_VARARG_FUNC_SANS_N0(rettype, name, numfixed, fixed, impl, implUtf8)
81
82 // ditto, but without the version with 0 template/vararg arguments
83 #define WX_DEFINE_VARARG_FUNC_SANS_N0(rettype, name, \
84 numfixed, fixed, impl, implUtf8) \
85 _WX_VARARG_ITER(_WX_VARARG_MAX_ARGS, \
86 _WX_VARARG_DEFINE_FUNC, \
87 rettype, name, impl, implUtf8, numfixed, fixed)
88
89 // Like WX_DEFINE_VARARG_FUNC, but for variadic functions that don't return
90 // a value.
91 #define WX_DEFINE_VARARG_FUNC_VOID(name, numfixed, fixed, impl, implUtf8) \
92 _WX_VARARG_DEFINE_FUNC_VOID_N0(name, impl, implUtf8, numfixed, fixed) \
93 _WX_VARARG_ITER(_WX_VARARG_MAX_ARGS, \
94 _WX_VARARG_DEFINE_FUNC_VOID, \
95 void, name, impl, implUtf8, numfixed, fixed)
96
97 // Like WX_DEFINE_VARARG_FUNC_VOID, but instead of wrapping an implementation
98 // function, does nothing in defined functions' bodies.
99 //
100 // Used to implement wxLogXXX functions if wxUSE_LOG=0.
101 #define WX_DEFINE_VARARG_FUNC_NOP(name, numfixed, fixed) \
102 _WX_VARARG_DEFINE_FUNC_NOP_N0(name, numfixed, fixed) \
103 _WX_VARARG_ITER(_WX_VARARG_MAX_ARGS, \
104 _WX_VARARG_DEFINE_FUNC_NOP, \
105 void, name, dummy, dummy, numfixed, fixed)
106
107 // Like WX_DEFINE_VARARG_FUNC_CTOR, but for defining template constructors
108 #define WX_DEFINE_VARARG_FUNC_CTOR(name, numfixed, fixed, impl, implUtf8) \
109 _WX_VARARG_DEFINE_FUNC_CTOR_N0(name, impl, implUtf8, numfixed, fixed) \
110 _WX_VARARG_ITER(_WX_VARARG_MAX_ARGS, \
111 _WX_VARARG_DEFINE_FUNC_CTOR, \
112 void, name, impl, implUtf8, numfixed, fixed)
113
114
115 // ----------------------------------------------------------------------------
116 // wxFormatString
117 // ----------------------------------------------------------------------------
118
119 // This class must be used for format string argument of the functions
120 // defined using WX_DEFINE_VARARG_FUNC_* macros. It converts the string to
121 // char* or wchar_t* for passing to implementation function efficiently (i.e.
122 // without keeping the converted string in memory for longer than necessary,
123 // like c_str()). It also converts format string to the correct form that
124 // accounts for string changes done by wxArgNormalizer<>
125 //
126 // Note that this class can _only_ be used for function arguments!
127 #ifdef __VISUALC__
128 // "struct 'wx[W]CharBuffer<T>' needs to have dll-interface to be used by
129 // clients of class 'wxString'" - this is private, we don't care
130 #pragma warning (disable:4251)
131 #endif
132 class WXDLLIMPEXP_BASE wxFormatString
133 {
134 public:
135 wxFormatString(const char *str)
136 : m_char(wxCharBuffer::CreateNonOwned(str)), m_str(NULL), m_cstr(NULL) {}
137 wxFormatString(const wchar_t *str)
138 : m_wchar(wxWCharBuffer::CreateNonOwned(str)), m_str(NULL), m_cstr(NULL) {}
139 wxFormatString(const wxString& str)
140 : m_str(&str), m_cstr(NULL) {}
141 wxFormatString(const wxCStrData& str)
142 : m_str(NULL), m_cstr(&str) {}
143 wxFormatString(const wxCharBuffer& str)
144 : m_char(str), m_str(NULL), m_cstr(NULL) {}
145 wxFormatString(const wxWCharBuffer& str)
146 : m_wchar(str), m_str(NULL), m_cstr(NULL) {}
147
148
149 enum ArgumentType
150 {
151 Arg_Char, // character as char
152
153 Arg_Other // something else, for example int for %d
154 };
155
156 // returns the type of format specifier for n-th variadic argument (this is
157 // not necessarily n-th format specifier if positional specifiers are used);
158 // called by wxArgNormalizer<> specializations to get information about
159 // n-th variadic argument desired representation
160 ArgumentType GetArgumentType(unsigned n) const;
161
162 #if !wxUSE_UNICODE_WCHAR
163 operator const char*() const
164 { return wx_const_cast(wxFormatString*, this)->AsChar(); }
165 private:
166 // InputAsChar() returns the value converted passed to ctor, only converted
167 // to char, while AsChar() takes the the string returned by InputAsChar()
168 // and does format string conversion on it as well (and similarly for
169 // ..AsWChar() below)
170 const char* InputAsChar();
171 const char* AsChar();
172 wxCharBuffer m_convertedChar;
173 #endif // !wxUSE_UNICODE_WCHAR
174
175 #if wxUSE_UNICODE && !wxUSE_UTF8_LOCALE_ONLY
176 public:
177 operator const wchar_t*() const
178 { return wx_const_cast(wxFormatString*, this)->AsWChar(); }
179 private:
180 const wchar_t* InputAsWChar();
181 const wchar_t* AsWChar();
182 wxWCharBuffer m_convertedWChar;
183 #endif // wxUSE_UNICODE && !wxUSE_UTF8_LOCALE_ONLY
184
185 private:
186 wxCharBuffer m_char;
187 wxWCharBuffer m_wchar;
188 #ifdef __VISUALC__
189 #pragma warning (default:4251)
190 #endif
191
192 // NB: we can use a pointer here, because wxFormatString is only used
193 // as function argument, so it has shorter life than the string
194 // passed to the ctor
195 const wxString * const m_str;
196 const wxCStrData * const m_cstr;
197
198 DECLARE_NO_ASSIGN_CLASS(wxFormatString)
199 };
200
201 // these two helper classes are used to find wxFormatString argument among fixed
202 // arguments passed to a vararg template
203 struct wxFormatStringArgument
204 {
205 wxFormatStringArgument(const wxFormatString *s = NULL) : m_str(s) {}
206 const wxFormatString *m_str;
207
208 // overriding this operator allows us to reuse _WX_VARARG_JOIN macro
209 wxFormatStringArgument operator,(const wxFormatStringArgument& a) const
210 {
211 wxASSERT_MSG( m_str == NULL || a.m_str == NULL,
212 "can't have two format strings in vararg function" );
213 return wxFormatStringArgument(m_str ? m_str : a.m_str);
214 }
215
216 operator const wxFormatString*() const { return m_str; }
217 };
218
219 template<typename T>
220 struct wxFormatStringArgumentFinder
221 {
222 static wxFormatStringArgument find(T)
223 {
224 // by default, arguments are not format strings, so return "not found"
225 return wxFormatStringArgument();
226 }
227 };
228
229 template<>
230 struct wxFormatStringArgumentFinder<const wxFormatString&>
231 {
232 static wxFormatStringArgument find(const wxFormatString& arg)
233 { return wxFormatStringArgument(&arg); }
234 };
235
236 template<>
237 struct wxFormatStringArgumentFinder<wxFormatString>
238 {
239 static wxFormatStringArgument find(const wxFormatString& arg)
240 { return wxFormatStringArgument(&arg); }
241 };
242
243
244 // ----------------------------------------------------------------------------
245 // wxArgNormalizer*<T> converters
246 // ----------------------------------------------------------------------------
247
248 // Converts an argument passed to wxPrint etc. into standard form expected,
249 // by wxXXX functions, e.g. all strings (wxString, char*, wchar_t*) are
250 // converted into wchar_t* or char* depending on the build.
251 template<typename T>
252 struct wxArgNormalizer
253 {
254 // Ctor. 'value' is the value passed as variadic argument, 'fmt' is pointer
255 // to printf-like format string or NULL if the variadic function doesn't
256 // use format string and 'index' is index of 'value' in variadic arguments
257 // list (starting at 1)
258 wxArgNormalizer(T value,
259 const wxFormatString *WXUNUSED(fmt), unsigned WXUNUSED(index))
260 : m_value(value) {}
261
262 // Returns the value in a form that can be safely passed to real vararg
263 // functions. In case of strings, this is char* in ANSI build and wchar_t*
264 // in Unicode build.
265 T get() const { return m_value; }
266
267 T m_value;
268 };
269
270 // normalizer for passing arguments to functions working with wchar_t* (and
271 // until ANSI build is removed, char* in ANSI build as well - FIXME-UTF8)
272 // string representation
273 #if !wxUSE_UTF8_LOCALE_ONLY
274 template<typename T>
275 struct wxArgNormalizerWchar : public wxArgNormalizer<T>
276 {
277 wxArgNormalizerWchar(T value,
278 const wxFormatString *fmt, unsigned index)
279 : wxArgNormalizer<T>(value, fmt, index) {}
280 };
281 #endif // !wxUSE_UTF8_LOCALE_ONLY
282
283 // normalizer for passing arguments to functions working with UTF-8 encoded
284 // char* strings
285 #if wxUSE_UNICODE_UTF8
286 template<typename T>
287 struct wxArgNormalizerUtf8 : public wxArgNormalizer<T>
288 {
289 wxArgNormalizerUtf8(T value,
290 const wxFormatString *fmt, unsigned index)
291 : wxArgNormalizer<T>(value, fmt, index) {}
292 };
293
294 #define wxArgNormalizerNative wxArgNormalizerUtf8
295 #else // wxUSE_UNICODE_WCHAR
296 #define wxArgNormalizerNative wxArgNormalizerWchar
297 #endif // wxUSE_UNICODE_UTF8 // wxUSE_UNICODE_UTF8
298
299
300
301 // special cases for converting strings:
302
303
304 // base class for wxArgNormalizer<T> specializations that need to do conversion;
305 // CharType is either wxStringCharType or wchar_t in UTF-8 build when wrapping
306 // widechar CRT function
307 template<typename CharType>
308 struct wxArgNormalizerWithBuffer
309 {
310 typedef wxCharTypeBuffer<CharType> CharBuffer;
311
312 wxArgNormalizerWithBuffer() {}
313 wxArgNormalizerWithBuffer(const CharBuffer& buf,
314 const wxFormatString *WXUNUSED(fmt),
315 unsigned WXUNUSED(index))
316 : m_value(buf) {}
317
318 const CharType *get() const { return m_value; }
319
320 CharBuffer m_value;
321 };
322
323 // string objects:
324 template<>
325 struct WXDLLIMPEXP_BASE wxArgNormalizerNative<const wxString&>
326 {
327 wxArgNormalizerNative(const wxString& s,
328 const wxFormatString *WXUNUSED(fmt),
329 unsigned WXUNUSED(index))
330 : m_value(s) {}
331
332 const wxStringCharType *get() const;
333
334 const wxString& m_value;
335 };
336
337 // c_str() values:
338 template<>
339 struct WXDLLIMPEXP_BASE wxArgNormalizerNative<const wxCStrData&>
340 {
341 wxArgNormalizerNative(const wxCStrData& value,
342 const wxFormatString *WXUNUSED(fmt),
343 unsigned WXUNUSED(index))
344 : m_value(value) {}
345
346 const wxStringCharType *get() const;
347
348 const wxCStrData& m_value;
349 };
350
351 // wxString/wxCStrData conversion to wchar_t* value
352 #if wxUSE_UNICODE_UTF8 && !wxUSE_UTF8_LOCALE_ONLY
353 template<>
354 struct WXDLLIMPEXP_BASE wxArgNormalizerWchar<const wxString&>
355 : public wxArgNormalizerWithBuffer<wchar_t>
356 {
357 wxArgNormalizerWchar(const wxString& s,
358 const wxFormatString *fmt, unsigned index);
359 };
360
361 template<>
362 struct WXDLLIMPEXP_BASE wxArgNormalizerWchar<const wxCStrData&>
363 : public wxArgNormalizerWithBuffer<wchar_t>
364 {
365 wxArgNormalizerWchar(const wxCStrData& s,
366 const wxFormatString *fmt, unsigned index);
367 };
368 #endif // wxUSE_UNICODE_UTF8 && !wxUSE_UTF8_LOCALE_ONLY
369
370
371 // C string pointers of the wrong type (wchar_t* for ANSI or UTF8 build,
372 // char* for wchar_t Unicode build or UTF8):
373 #if wxUSE_UNICODE_WCHAR
374
375 template<>
376 struct wxArgNormalizerWchar<const char*>
377 : public wxArgNormalizerWithBuffer<wchar_t>
378 {
379 wxArgNormalizerWchar(const char* s,
380 const wxFormatString *fmt, unsigned index)
381 : wxArgNormalizerWithBuffer<wchar_t>(wxConvLibc.cMB2WC(s), fmt, index) {}
382 };
383
384 #elif wxUSE_UNICODE_UTF8
385
386 template<>
387 struct wxArgNormalizerUtf8<const wchar_t*>
388 : public wxArgNormalizerWithBuffer<char>
389 {
390 wxArgNormalizerUtf8(const wchar_t* s,
391 const wxFormatString *fmt, unsigned index)
392 : wxArgNormalizerWithBuffer<char>(wxConvUTF8.cWC2MB(s), fmt, index) {}
393 };
394
395 template<>
396 struct wxArgNormalizerUtf8<const char*>
397 : public wxArgNormalizerWithBuffer<char>
398 {
399 wxArgNormalizerUtf8(const char* s,
400 const wxFormatString *WXUNUSED(fmt),
401 unsigned WXUNUSED(index))
402 {
403 if ( wxLocaleIsUtf8 )
404 {
405 m_value = wxCharBuffer::CreateNonOwned(s);
406 }
407 else
408 {
409 // convert to widechar string first:
410 wxWCharBuffer buf(wxConvLibc.cMB2WC(s));
411
412 // then to UTF-8:
413 if ( buf )
414 m_value = wxConvUTF8.cWC2MB(buf);
415 }
416 }
417 };
418
419 // UTF-8 build needs conversion to wchar_t* too:
420 #if !wxUSE_UTF8_LOCALE_ONLY
421 template<>
422 struct wxArgNormalizerWchar<const char*>
423 : public wxArgNormalizerWithBuffer<wchar_t>
424 {
425 wxArgNormalizerWchar(const char* s,
426 const wxFormatString *fmt, unsigned index)
427 : wxArgNormalizerWithBuffer<wchar_t>(wxConvLibc.cMB2WC(s), fmt, index) {}
428 };
429 #endif // !wxUSE_UTF8_LOCALE_ONLY
430
431 #else // ANSI - FIXME-UTF8
432
433 template<>
434 struct wxArgNormalizerWchar<const wchar_t*>
435 : public wxArgNormalizerWithBuffer<char>
436 {
437 wxArgNormalizerWchar(const wchar_t* s,
438 const wxFormatString *fmt, unsigned index)
439 : wxArgNormalizerWithBuffer<char>(wxConvLibc.cWC2MB(s), fmt, index) {}
440 };
441
442 #endif // wxUSE_UNICODE_WCHAR/wxUSE_UNICODE_UTF8/ANSI
443
444
445 // this macro is used to implement specialization that are exactly same as
446 // some other specialization, i.e. to "forward" the implementation (e.g. for
447 // T=wxString and T=const wxString&). Note that the ctor takes BaseT argument,
448 // not T!
449 #if wxUSE_UNICODE_UTF8
450 #if wxUSE_UTF8_LOCALE_ONLY
451 #define WX_ARG_NORMALIZER_FORWARD(T, BaseT) \
452 _WX_ARG_NORMALIZER_FORWARD_IMPL(wxArgNormalizerUtf8, T, BaseT)
453 #else // possibly non-UTF8 locales
454 #define WX_ARG_NORMALIZER_FORWARD(T, BaseT) \
455 _WX_ARG_NORMALIZER_FORWARD_IMPL(wxArgNormalizerWchar, T, BaseT); \
456 _WX_ARG_NORMALIZER_FORWARD_IMPL(wxArgNormalizerUtf8, T, BaseT)
457 #endif
458 #else // wxUSE_UNICODE_WCHAR
459 #define WX_ARG_NORMALIZER_FORWARD(T, BaseT) \
460 _WX_ARG_NORMALIZER_FORWARD_IMPL(wxArgNormalizerWchar, T, BaseT)
461 #endif // wxUSE_UNICODE_UTF8/wxUSE_UNICODE_WCHAR
462
463 #define _WX_ARG_NORMALIZER_FORWARD_IMPL(Normalizer, T, BaseT) \
464 template<> \
465 struct Normalizer<T> : public Normalizer<BaseT> \
466 { \
467 Normalizer(BaseT value, \
468 const wxFormatString *fmt, unsigned index) \
469 : Normalizer<BaseT>(value, fmt, index) {} \
470 }
471
472 // non-reference versions of specializations for string objects
473 WX_ARG_NORMALIZER_FORWARD(wxString, const wxString&);
474 WX_ARG_NORMALIZER_FORWARD(wxCStrData, const wxCStrData&);
475
476 // versions for passing non-const pointers:
477 WX_ARG_NORMALIZER_FORWARD(char*, const char*);
478 WX_ARG_NORMALIZER_FORWARD(wchar_t*, const wchar_t*);
479
480 // versions for passing wx[W]CharBuffer:
481 WX_ARG_NORMALIZER_FORWARD(wxCharBuffer, const char*);
482 WX_ARG_NORMALIZER_FORWARD(const wxCharBuffer&, const char*);
483 WX_ARG_NORMALIZER_FORWARD(wxWCharBuffer, const wchar_t*);
484 WX_ARG_NORMALIZER_FORWARD(const wxWCharBuffer&, const wchar_t*);
485
486 // versions for std::[w]string:
487 #if wxUSE_STD_STRING
488
489 #include "wx/stringimpl.h"
490
491 #if !wxUSE_UTF8_LOCALE_ONLY
492 template<>
493 struct wxArgNormalizerWchar<const std::string&>
494 : public wxArgNormalizerWchar<const char*>
495 {
496 wxArgNormalizerWchar(const std::string& s,
497 const wxFormatString *fmt, unsigned index)
498 : wxArgNormalizerWchar<const char*>(s.c_str(), fmt, index) {}
499 };
500
501 template<>
502 struct wxArgNormalizerWchar<const wxStdWideString&>
503 : public wxArgNormalizerWchar<const wchar_t*>
504 {
505 wxArgNormalizerWchar(const wxStdWideString& s,
506 const wxFormatString *fmt, unsigned index)
507 : wxArgNormalizerWchar<const wchar_t*>(s.c_str(), fmt, index) {}
508 };
509 #endif // !wxUSE_UTF8_LOCALE_ONLY
510
511 #if wxUSE_UNICODE_UTF8
512 template<>
513 struct wxArgNormalizerUtf8<const std::string&>
514 : public wxArgNormalizerUtf8<const char*>
515 {
516 wxArgNormalizerUtf8(const std::string& s,
517 const wxFormatString *fmt, unsigned index)
518 : wxArgNormalizerUtf8<const char*>(s.c_str(), fmt, index) {}
519 };
520
521 template<>
522 struct wxArgNormalizerUtf8<const wxStdWideString&>
523 : public wxArgNormalizerUtf8<const wchar_t*>
524 {
525 wxArgNormalizerUtf8(const wxStdWideString& s,
526 const wxFormatString *fmt, unsigned index)
527 : wxArgNormalizerUtf8<const wchar_t*>(s.c_str(), fmt, index) {}
528 };
529 #endif // wxUSE_UNICODE_UTF8
530
531 WX_ARG_NORMALIZER_FORWARD(std::string, const std::string&);
532 WX_ARG_NORMALIZER_FORWARD(wxStdWideString, const wxStdWideString&);
533
534 #endif // wxUSE_STD_STRING
535
536
537 // versions for wxUniChar, wxUniCharRef:
538 // (this is same for UTF-8 and Wchar builds, we just convert to wchar_t)
539 template<>
540 struct wxArgNormalizer<const wxUniChar&> : public wxArgNormalizer<wchar_t>
541 {
542 wxArgNormalizer(const wxUniChar& s,
543 const wxFormatString *fmt, unsigned index)
544 : wxArgNormalizer<wchar_t>(s.GetValue(), fmt, index) {}
545 };
546
547 // for wchar_t, default handler does the right thing
548
549 // char has to be treated differently in Unicode builds: a char argument may
550 // be used either for a character value (which should be converted into
551 // wxUniChar) or as an integer value (which should be left as-is). We take
552 // advantage of the fact that both char and wchar_t are converted into int
553 // in variadic arguments here.
554 #if wxUSE_UNICODE
555 template<typename T>
556 struct wxArgNormalizerNarrowChar
557 {
558 wxArgNormalizerNarrowChar(T value,
559 const wxFormatString *fmt, unsigned index)
560 {
561 // FIXME-UTF8: which one is better default in absence of fmt string
562 // (i.e. when used like e.g. Foo("foo", "bar", 'c', NULL)?
563 if ( !fmt || fmt->GetArgumentType(index) == wxFormatString::Arg_Char )
564 m_value = wxUniChar(value).GetValue();
565 else
566 m_value = value;
567 }
568
569 int get() const { return m_value; }
570
571 T m_value;
572 };
573
574 template<>
575 struct wxArgNormalizer<char> : public wxArgNormalizerNarrowChar<char>
576 {
577 wxArgNormalizer(char value,
578 const wxFormatString *fmt, unsigned index)
579 : wxArgNormalizerNarrowChar<char>(value, fmt, index) {}
580 };
581
582 template<>
583 struct wxArgNormalizer<unsigned char>
584 : public wxArgNormalizerNarrowChar<unsigned char>
585 {
586 wxArgNormalizer(unsigned char value,
587 const wxFormatString *fmt, unsigned index)
588 : wxArgNormalizerNarrowChar<unsigned char>(value, fmt, index) {}
589 };
590
591 #endif // wxUSE_UNICODE
592
593 // convert references:
594 WX_ARG_NORMALIZER_FORWARD(wxUniChar, const wxUniChar&);
595 WX_ARG_NORMALIZER_FORWARD(const wxUniCharRef&, const wxUniChar&);
596 WX_ARG_NORMALIZER_FORWARD(wxUniCharRef, const wxUniChar&);
597 WX_ARG_NORMALIZER_FORWARD(const wchar_t&, wchar_t);
598
599 WX_ARG_NORMALIZER_FORWARD(const char&, char);
600 WX_ARG_NORMALIZER_FORWARD(const unsigned char&, unsigned char);
601
602
603 #undef WX_ARG_NORMALIZER_FORWARD
604 #undef _WX_ARG_NORMALIZER_FORWARD_IMPL
605
606 // ----------------------------------------------------------------------------
607 // WX_VA_ARG_STRING
608 // ----------------------------------------------------------------------------
609
610 // Replacement for va_arg() for use with strings in functions that accept
611 // strings normalized by wxArgNormalizer<T>:
612
613 struct WXDLLIMPEXP_BASE wxArgNormalizedString
614 {
615 wxArgNormalizedString(const void* ptr) : m_ptr(ptr) {}
616
617 // returns true if non-NULL string was passed in
618 bool IsValid() const { return m_ptr != NULL; }
619 operator bool() const { return IsValid(); }
620
621 // extracts the string, returns empty string if NULL was passed in
622 wxString GetString() const;
623 operator wxString() const;
624
625 private:
626 const void *m_ptr;
627 };
628
629 #define WX_VA_ARG_STRING(ap) wxArgNormalizedString(va_arg(ap, const void*))
630
631 // ----------------------------------------------------------------------------
632 // implementation of the WX_DEFINE_VARARG_* macros
633 // ----------------------------------------------------------------------------
634
635 // NB: The vararg emulation code is limited to 30 variadic and 4 fixed
636 // arguments at the moment.
637 // If you need more variadic arguments, you need to
638 // 1) increase the value of _WX_VARARG_MAX_ARGS
639 // 2) add _WX_VARARG_JOIN_* and _WX_VARARG_ITER_* up to the new
640 // _WX_VARARG_MAX_ARGS value to the lists below
641 // If you need more fixed arguments, you need to
642 // 1) increase the value of _WX_VARARG_MAX_FIXED_ARGS
643 // 2) add _WX_VARARG_FIXED_EXPAND_* and _WX_VARARG_FIXED_UNUSED_EXPAND_*
644 // macros below
645 #define _WX_VARARG_MAX_ARGS 30
646 #define _WX_VARARG_MAX_FIXED_ARGS 4
647
648 #define _WX_VARARG_JOIN_1(m) m(1)
649 #define _WX_VARARG_JOIN_2(m) _WX_VARARG_JOIN_1(m), m(2)
650 #define _WX_VARARG_JOIN_3(m) _WX_VARARG_JOIN_2(m), m(3)
651 #define _WX_VARARG_JOIN_4(m) _WX_VARARG_JOIN_3(m), m(4)
652 #define _WX_VARARG_JOIN_5(m) _WX_VARARG_JOIN_4(m), m(5)
653 #define _WX_VARARG_JOIN_6(m) _WX_VARARG_JOIN_5(m), m(6)
654 #define _WX_VARARG_JOIN_7(m) _WX_VARARG_JOIN_6(m), m(7)
655 #define _WX_VARARG_JOIN_8(m) _WX_VARARG_JOIN_7(m), m(8)
656 #define _WX_VARARG_JOIN_9(m) _WX_VARARG_JOIN_8(m), m(9)
657 #define _WX_VARARG_JOIN_10(m) _WX_VARARG_JOIN_9(m), m(10)
658 #define _WX_VARARG_JOIN_11(m) _WX_VARARG_JOIN_10(m), m(11)
659 #define _WX_VARARG_JOIN_12(m) _WX_VARARG_JOIN_11(m), m(12)
660 #define _WX_VARARG_JOIN_13(m) _WX_VARARG_JOIN_12(m), m(13)
661 #define _WX_VARARG_JOIN_14(m) _WX_VARARG_JOIN_13(m), m(14)
662 #define _WX_VARARG_JOIN_15(m) _WX_VARARG_JOIN_14(m), m(15)
663 #define _WX_VARARG_JOIN_16(m) _WX_VARARG_JOIN_15(m), m(16)
664 #define _WX_VARARG_JOIN_17(m) _WX_VARARG_JOIN_16(m), m(17)
665 #define _WX_VARARG_JOIN_18(m) _WX_VARARG_JOIN_17(m), m(18)
666 #define _WX_VARARG_JOIN_19(m) _WX_VARARG_JOIN_18(m), m(19)
667 #define _WX_VARARG_JOIN_20(m) _WX_VARARG_JOIN_19(m), m(20)
668 #define _WX_VARARG_JOIN_21(m) _WX_VARARG_JOIN_20(m), m(21)
669 #define _WX_VARARG_JOIN_22(m) _WX_VARARG_JOIN_21(m), m(22)
670 #define _WX_VARARG_JOIN_23(m) _WX_VARARG_JOIN_22(m), m(23)
671 #define _WX_VARARG_JOIN_24(m) _WX_VARARG_JOIN_23(m), m(24)
672 #define _WX_VARARG_JOIN_25(m) _WX_VARARG_JOIN_24(m), m(25)
673 #define _WX_VARARG_JOIN_26(m) _WX_VARARG_JOIN_25(m), m(26)
674 #define _WX_VARARG_JOIN_27(m) _WX_VARARG_JOIN_26(m), m(27)
675 #define _WX_VARARG_JOIN_28(m) _WX_VARARG_JOIN_27(m), m(28)
676 #define _WX_VARARG_JOIN_29(m) _WX_VARARG_JOIN_28(m), m(29)
677 #define _WX_VARARG_JOIN_30(m) _WX_VARARG_JOIN_29(m), m(30)
678
679 #define _WX_VARARG_ITER_1(m,a,b,c,d,e,f) m(1,a,b,c,d,e,f)
680 #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)
681 #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)
682 #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)
683 #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)
684 #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)
685 #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)
686 #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)
687 #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)
688 #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)
689 #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)
690 #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)
691 #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)
692 #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)
693 #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)
694 #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)
695 #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)
696 #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)
697 #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)
698 #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)
699 #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)
700 #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)
701 #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)
702 #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)
703 #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)
704 #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)
705 #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)
706 #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)
707 #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)
708 #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)
709
710
711 #define _WX_VARARG_FIXED_EXPAND_1(t1) \
712 t1 f1
713 #define _WX_VARARG_FIXED_EXPAND_2(t1,t2) \
714 t1 f1, t2 f2
715 #define _WX_VARARG_FIXED_EXPAND_3(t1,t2,t3) \
716 t1 f1, t2 f2, t3 f3
717 #define _WX_VARARG_FIXED_EXPAND_4(t1,t2,t3,t4) \
718 t1 f1, t2 f2, t3 f3, t4 f4
719
720 #define _WX_VARARG_FIXED_UNUSED_EXPAND_1(t1) \
721 t1 WXUNUSED(f1)
722 #define _WX_VARARG_FIXED_UNUSED_EXPAND_2(t1,t2) \
723 t1 WXUNUSED(f1), t2 WXUNUSED(f2)
724 #define _WX_VARARG_FIXED_UNUSED_EXPAND_3(t1,t2,t3) \
725 t1 WXUNUSED(f1), t2 WXUNUSED(f2), t3 WXUNUSED(f3)
726 #define _WX_VARARG_FIXED_UNUSED_EXPAND_4(t1,t2,t3,t4) \
727 t1 WXUNUSED(f1), t2 WXUNUSED(f2), t3 WXUNUSED(f3), t4 WXUNUSED(f4)
728
729 #define _WX_VARARG_FIXED_TYPEDEFS_1(t1) \
730 typedef t1 TF1
731 #define _WX_VARARG_FIXED_TYPEDEFS_2(t1,t2) \
732 _WX_VARARG_FIXED_TYPEDEFS_1(t1); typedef t2 TF2
733 #define _WX_VARARG_FIXED_TYPEDEFS_3(t1,t2,t3) \
734 _WX_VARARG_FIXED_TYPEDEFS_2(t1,t2); typedef t3 TF3
735 #define _WX_VARARG_FIXED_TYPEDEFS_4(t1,t2,t3,t4) \
736 _WX_VARARG_FIXED_TYPEDEFS_3(t1,t2,t3); typedef t4 TF4
737
738 // This macro expands N-items tuple of fixed arguments types into part of
739 // function's declaration. For example,
740 // "_WX_VARARG_FIXED_EXPAND(3, (int, char*, int))" expands into
741 // "int f1, char* f2, int f3".
742 #define _WX_VARARG_FIXED_EXPAND(N, args) \
743 _WX_VARARG_FIXED_EXPAND_IMPL(N, args)
744 #define _WX_VARARG_FIXED_EXPAND_IMPL(N, args) \
745 _WX_VARARG_FIXED_EXPAND_##N args
746
747 // Ditto for unused arguments
748 #define _WX_VARARG_FIXED_UNUSED_EXPAND(N, args) \
749 _WX_VARARG_FIXED_UNUSED_EXPAND_IMPL(N, args)
750 #define _WX_VARARG_FIXED_UNUSED_EXPAND_IMPL(N, args) \
751 _WX_VARARG_FIXED_UNUSED_EXPAND_##N args
752
753 // Declarates typedefs for fixed arguments types; i-th fixed argument types
754 // will have TFi typedef.
755 #define _WX_VARARG_FIXED_TYPEDEFS(N, args) \
756 _WX_VARARG_FIXED_TYPEDEFS_IMPL(N, args)
757 #define _WX_VARARG_FIXED_TYPEDEFS_IMPL(N, args) \
758 _WX_VARARG_FIXED_TYPEDEFS_##N args
759
760
761 // This macro calls another macro 'm' passed as second argument 'N' times,
762 // with its only argument set to 1..N, and concatenates the results using
763 // comma as separator.
764 //
765 // An example:
766 // #define foo(i) x##i
767 // // this expands to "x1,x2,x3,x4"
768 // _WX_VARARG_JOIN(4, foo)
769 //
770 //
771 // N must not be greater than _WX_VARARG_MAX_ARGS (=30).
772 #define _WX_VARARG_JOIN(N, m) _WX_VARARG_JOIN_IMPL(N, m)
773 #define _WX_VARARG_JOIN_IMPL(N, m) _WX_VARARG_JOIN_##N(m)
774
775
776 // This macro calls another macro 'm' passed as second argument 'N' times, with
777 // its first argument set to 1..N and the remaining arguments set to 'a', 'b',
778 // 'c', 'd', 'e' and 'f'. The results are separated with whitespace in the
779 // expansion.
780 //
781 // An example:
782 // // this macro expands to:
783 // // foo(1,a,b,c,d,e,f)
784 // // foo(2,a,b,c,d,e,f)
785 // // foo(3,a,b,c,d,e,f)
786 // _WX_VARARG_ITER(3, foo, a, b, c, d, e, f)
787 //
788 // N must not be greater than _WX_VARARG_MAX_ARGS (=30).
789 #define _WX_VARARG_ITER(N,m,a,b,c,d,e,f) \
790 _WX_VARARG_ITER_IMPL(N,m,a,b,c,d,e,f)
791 #define _WX_VARARG_ITER_IMPL(N,m,a,b,c,d,e,f) \
792 _WX_VARARG_ITER_##N(m,a,b,c,d,e,f)
793
794 // Generates code snippet for i-th "variadic" argument in vararg function's
795 // prototype:
796 #define _WX_VARARG_ARG(i) T##i a##i
797
798 // Like _WX_VARARG_ARG_UNUSED, but outputs argument's type with WXUNUSED:
799 #define _WX_VARARG_ARG_UNUSED(i) T##i WXUNUSED(a##i)
800
801 // Generates code snippet for i-th type in vararg function's template<...>:
802 #define _WX_VARARG_TEMPL(i) typename T##i
803
804 // Generates code snippet for passing i-th argument of vararg function
805 // wrapper to its implementation, normalizing it in the process:
806 #define _WX_VARARG_PASS_WCHAR(i) \
807 wxArgNormalizerWchar<T##i>(a##i, fmt, i).get()
808 #define _WX_VARARG_PASS_UTF8(i) \
809 wxArgNormalizerUtf8<T##i>(a##i, fmt, i).get()
810
811
812 // And the same for fixed arguments, _not_ normalizing it:
813 #define _WX_VARARG_PASS_FIXED(i) f##i
814
815 #define _WX_VARARG_FIND_FMT(i) \
816 (wxFormatStringArgumentFinder<TF##i>::find(f##i))
817
818 #define _WX_VARARG_FORMAT_STRING(numfixed, fixed) \
819 _WX_VARARG_FIXED_TYPEDEFS(numfixed, fixed); \
820 const wxFormatString *fmt = \
821 (_WX_VARARG_JOIN(numfixed, _WX_VARARG_FIND_FMT))
822
823 #if wxUSE_UNICODE_UTF8
824 #define _WX_VARARG_DO_CALL_UTF8(return_kw, impl, implUtf8, N, numfixed) \
825 return_kw implUtf8(_WX_VARARG_JOIN(numfixed, _WX_VARARG_PASS_FIXED), \
826 _WX_VARARG_JOIN(N, _WX_VARARG_PASS_UTF8))
827 #define _WX_VARARG_DO_CALL0_UTF8(return_kw, impl, implUtf8, numfixed) \
828 return_kw implUtf8(_WX_VARARG_JOIN(numfixed, _WX_VARARG_PASS_FIXED))
829 #endif // wxUSE_UNICODE_UTF8
830
831 #define _WX_VARARG_DO_CALL_WCHAR(return_kw, impl, implUtf8, N, numfixed) \
832 return_kw impl(_WX_VARARG_JOIN(numfixed, _WX_VARARG_PASS_FIXED), \
833 _WX_VARARG_JOIN(N, _WX_VARARG_PASS_WCHAR))
834 #define _WX_VARARG_DO_CALL0_WCHAR(return_kw, impl, implUtf8, numfixed) \
835 return_kw impl(_WX_VARARG_JOIN(numfixed, _WX_VARARG_PASS_FIXED))
836
837 #if wxUSE_UNICODE_UTF8
838 #if wxUSE_UTF8_LOCALE_ONLY
839 #define _WX_VARARG_DO_CALL _WX_VARARG_DO_CALL_UTF8
840 #define _WX_VARARG_DO_CALL0 _WX_VARARG_DO_CALL0_UTF8
841 #else // possibly non-UTF8 locales
842 #define _WX_VARARG_DO_CALL(return_kw, impl, implUtf8, N, numfixed) \
843 if ( wxLocaleIsUtf8 ) \
844 _WX_VARARG_DO_CALL_UTF8(return_kw, impl, implUtf8, N, numfixed);\
845 else \
846 _WX_VARARG_DO_CALL_WCHAR(return_kw, impl, implUtf8, N, numfixed)
847
848 #define _WX_VARARG_DO_CALL0(return_kw, impl, implUtf8, numfixed) \
849 if ( wxLocaleIsUtf8 ) \
850 _WX_VARARG_DO_CALL0_UTF8(return_kw, impl, implUtf8, numfixed); \
851 else \
852 _WX_VARARG_DO_CALL0_WCHAR(return_kw, impl, implUtf8, numfixed)
853 #endif // wxUSE_UTF8_LOCALE_ONLY or not
854 #else // wxUSE_UNICODE_WCHAR or ANSI
855 #define _WX_VARARG_DO_CALL _WX_VARARG_DO_CALL_WCHAR
856 #define _WX_VARARG_DO_CALL0 _WX_VARARG_DO_CALL0_WCHAR
857 #endif // wxUSE_UNICODE_UTF8 / wxUSE_UNICODE_WCHAR
858
859
860 // Macro to be used with _WX_VARARG_ITER in the implementation of
861 // WX_DEFINE_VARARG_FUNC (see its documentation for the meaning of arguments)
862 #define _WX_VARARG_DEFINE_FUNC(N, rettype, name, \
863 impl, implUtf8, numfixed, fixed) \
864 template<_WX_VARARG_JOIN(N, _WX_VARARG_TEMPL)> \
865 rettype name(_WX_VARARG_FIXED_EXPAND(numfixed, fixed), \
866 _WX_VARARG_JOIN(N, _WX_VARARG_ARG)) \
867 { \
868 _WX_VARARG_FORMAT_STRING(numfixed, fixed); \
869 _WX_VARARG_DO_CALL(return, impl, implUtf8, N, numfixed); \
870 }
871
872 #define _WX_VARARG_DEFINE_FUNC_N0(rettype, name, \
873 impl, implUtf8, numfixed, fixed) \
874 inline rettype name(_WX_VARARG_FIXED_EXPAND(numfixed, fixed)) \
875 { \
876 _WX_VARARG_DO_CALL0(return, impl, implUtf8, numfixed); \
877 }
878
879 // Macro to be used with _WX_VARARG_ITER in the implementation of
880 // WX_DEFINE_VARARG_FUNC_VOID (see its documentation for the meaning of
881 // arguments; rettype is ignored and is used only to satisfy _WX_VARARG_ITER's
882 // requirements).
883 #define _WX_VARARG_DEFINE_FUNC_VOID(N, rettype, name, \
884 impl, implUtf8, numfixed, fixed) \
885 template<_WX_VARARG_JOIN(N, _WX_VARARG_TEMPL)> \
886 void name(_WX_VARARG_FIXED_EXPAND(numfixed, fixed), \
887 _WX_VARARG_JOIN(N, _WX_VARARG_ARG)) \
888 { \
889 _WX_VARARG_FORMAT_STRING(numfixed, fixed); \
890 _WX_VARARG_DO_CALL(wxEMPTY_PARAMETER_VALUE, \
891 impl, implUtf8, N, numfixed); \
892 }
893
894 #define _WX_VARARG_DEFINE_FUNC_VOID_N0(name, impl, implUtf8, numfixed, fixed) \
895 inline void name(_WX_VARARG_FIXED_EXPAND(numfixed, fixed)) \
896 { \
897 _WX_VARARG_DO_CALL0(wxEMPTY_PARAMETER_VALUE, \
898 impl, implUtf8, numfixed); \
899 }
900
901 // Macro to be used with _WX_VARARG_ITER in the implementation of
902 // WX_DEFINE_VARARG_FUNC_CTOR (see its documentation for the meaning of
903 // arguments; rettype is ignored and is used only to satisfy _WX_VARARG_ITER's
904 // requirements).
905 #define _WX_VARARG_DEFINE_FUNC_CTOR(N, rettype, name, \
906 impl, implUtf8, numfixed, fixed) \
907 template<_WX_VARARG_JOIN(N, _WX_VARARG_TEMPL)> \
908 name(_WX_VARARG_FIXED_EXPAND(numfixed, fixed), \
909 _WX_VARARG_JOIN(N, _WX_VARARG_ARG)) \
910 { \
911 _WX_VARARG_FORMAT_STRING(numfixed, fixed); \
912 _WX_VARARG_DO_CALL(wxEMPTY_PARAMETER_VALUE, \
913 impl, implUtf8, N, numfixed); \
914 }
915
916 #define _WX_VARARG_DEFINE_FUNC_CTOR_N0(name, impl, implUtf8, numfixed, fixed) \
917 inline name(_WX_VARARG_FIXED_EXPAND(numfixed, fixed)) \
918 { \
919 _WX_VARARG_DO_CALL0(wxEMPTY_PARAMETER_VALUE, \
920 impl, implUtf8, numfixed); \
921 }
922
923 // Macro to be used with _WX_VARARG_ITER in the implementation of
924 // WX_DEFINE_VARARG_FUNC_NOP, i.e. empty stub for a disabled vararg function.
925 // The rettype and impl arguments are ignored.
926 #define _WX_VARARG_DEFINE_FUNC_NOP(N, rettype, name, \
927 impl, implUtf8, numfixed, fixed) \
928 template<_WX_VARARG_JOIN(N, _WX_VARARG_TEMPL)> \
929 void name(_WX_VARARG_FIXED_UNUSED_EXPAND(numfixed, fixed), \
930 _WX_VARARG_JOIN(N, _WX_VARARG_ARG_UNUSED)) \
931 {}
932
933 #define _WX_VARARG_DEFINE_FUNC_NOP_N0(name, numfixed, fixed) \
934 inline void name(_WX_VARARG_FIXED_UNUSED_EXPAND(numfixed, fixed)) \
935 {}
936
937
938 // ----------------------------------------------------------------------------
939 // workaround for OpenWatcom bug #351
940 // ----------------------------------------------------------------------------
941
942 #ifdef __WATCOMC__
943 // workaround for http://bugzilla.openwatcom.org/show_bug.cgi?id=351
944
945 // This macro can be used to forward a 'vararg' template to another one with
946 // different fixed arguments types. Parameters are same as for
947 // WX_DEFINE_VARARG_FUNC (rettype=void can be used here), 'convfixed' is how
948 // to convert fixed arguments. For example, this is typical code for dealing
949 // with different forms of format string:
950 //
951 // WX_DEFINE_VARARG_FUNC_VOID(Printf, 1, (const wxFormatString&),
952 // DoPrintfWchar, DoPrintfUtf8)
953 // #ifdef __WATCOMC__
954 // WX_VARARG_WATCOM_WORKAROUND(void, Printf, 1, (const wxString&),
955 // (wxFormatString(f1)))
956 // WX_VARARG_WATCOM_WORKAROUND(void, Printf, 1, (const char*),
957 // (wxFormatString(f1)))
958 // ...
959 #define WX_VARARG_WATCOM_WORKAROUND(rettype, name, numfixed, fixed, convfixed)\
960 _WX_VARARG_ITER(_WX_VARARG_MAX_ARGS, \
961 _WX_VARARG_WATCOM_WORKAROUND, \
962 rettype, name, convfixed, dummy, numfixed, fixed)
963
964 #define WX_VARARG_WATCOM_WORKAROUND_CTOR(name, numfixed, fixed, convfixed) \
965 _WX_VARARG_ITER(_WX_VARARG_MAX_ARGS, \
966 _WX_VARARG_WATCOM_WORKAROUND_CTOR, \
967 dummy, name, convfixed, dummy, numfixed, fixed)
968
969 #define _WX_VARARG_WATCOM_UNPACK_1(a1) a1
970 #define _WX_VARARG_WATCOM_UNPACK_2(a1, a2) a1, a2
971 #define _WX_VARARG_WATCOM_UNPACK_3(a1, a2, a3) a1, a2, a3
972 #define _WX_VARARG_WATCOM_UNPACK_4(a1, a2, a3, a4) a1, a2, a3, a4
973 #define _WX_VARARG_WATCOM_UNPACK(N, convfixed) \
974 _WX_VARARG_WATCOM_UNPACK_##N convfixed
975
976 #define _WX_VARARG_PASS_WATCOM(i) a##i
977
978 #define _WX_VARARG_WATCOM_WORKAROUND(N, rettype, name, \
979 convfixed, dummy, numfixed, fixed) \
980 template<_WX_VARARG_JOIN(N, _WX_VARARG_TEMPL)> \
981 rettype name(_WX_VARARG_FIXED_EXPAND(numfixed, fixed), \
982 _WX_VARARG_JOIN(N, _WX_VARARG_ARG)) \
983 { \
984 return name(_WX_VARARG_WATCOM_UNPACK(numfixed, convfixed), \
985 _WX_VARARG_JOIN(N, _WX_VARARG_PASS_WATCOM)); \
986 }
987
988 #define _WX_VARARG_WATCOM_WORKAROUND_CTOR(N, dummy1, name, \
989 convfixed, dummy2, numfixed, fixed) \
990 template<_WX_VARARG_JOIN(N, _WX_VARARG_TEMPL)> \
991 name(_WX_VARARG_FIXED_EXPAND(numfixed, fixed), \
992 _WX_VARARG_JOIN(N, _WX_VARARG_ARG)) \
993 { \
994 name(_WX_VARARG_WATCOM_UNPACK(numfixed, convfixed), \
995 _WX_VARARG_JOIN(N, _WX_VARARG_PASS_WATCOM)); \
996 }
997
998 #endif // __WATCOMC__
999
1000 #endif // _WX_STRVARARG_H_
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