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[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 class WXDLLIMPEXP_BASE wxFormatString
128 {
129 public:
130 wxFormatString(const char *str)
131 : m_char(wxScopedCharBuffer::CreateNonOwned(str)), m_str(NULL), m_cstr(NULL) {}
132 wxFormatString(const wchar_t *str)
133 : m_wchar(wxScopedWCharBuffer::CreateNonOwned(str)), m_str(NULL), m_cstr(NULL) {}
134 wxFormatString(const wxString& str)
135 : m_str(&str), m_cstr(NULL) {}
136 wxFormatString(const wxCStrData& str)
137 : m_str(NULL), m_cstr(&str) {}
138 wxFormatString(const wxScopedCharBuffer& str)
139 : m_char(str), m_str(NULL), m_cstr(NULL) {}
140 wxFormatString(const wxScopedWCharBuffer& str)
141 : m_wchar(str), m_str(NULL), m_cstr(NULL) {}
142
143
144 enum ArgumentType
145 {
146 Arg_Char, // character as char
147
148 Arg_Other // something else, for example int for %d
149 };
150
151 // returns the type of format specifier for n-th variadic argument (this is
152 // not necessarily n-th format specifier if positional specifiers are used);
153 // called by wxArgNormalizer<> specializations to get information about
154 // n-th variadic argument desired representation
155 ArgumentType GetArgumentType(unsigned n) const;
156
157 // returns the value passed to ctor, only converted to wxString, similarly
158 // to other InputAsXXX() methods
159 wxString InputAsString() const;
160
161 #if !wxUSE_UNICODE_WCHAR
162 operator const char*() const
163 { return const_cast<wxFormatString*>(this)->AsChar(); }
164 private:
165 // InputAsChar() returns the value passed to ctor, only converted
166 // to char, while AsChar() takes the the string returned by InputAsChar()
167 // and does format string conversion on it as well (and similarly for
168 // ..AsWChar() below)
169 const char* InputAsChar();
170 const char* AsChar();
171 wxScopedCharBuffer m_convertedChar;
172 #endif // !wxUSE_UNICODE_WCHAR
173
174 #if wxUSE_UNICODE && !wxUSE_UTF8_LOCALE_ONLY
175 public:
176 operator const wchar_t*() const
177 { return const_cast<wxFormatString*>(this)->AsWChar(); }
178 private:
179 const wchar_t* InputAsWChar();
180 const wchar_t* AsWChar();
181 wxScopedWCharBuffer m_convertedWChar;
182 #endif // wxUSE_UNICODE && !wxUSE_UTF8_LOCALE_ONLY
183
184 private:
185 wxScopedCharBuffer m_char;
186 wxScopedWCharBuffer m_wchar;
187
188 // NB: we can use a pointer here, because wxFormatString is only used
189 // as function argument, so it has shorter life than the string
190 // passed to the ctor
191 const wxString * const m_str;
192 const wxCStrData * const m_cstr;
193
194 wxDECLARE_NO_ASSIGN_CLASS(wxFormatString);
195 };
196
197 // these two helper classes are used to find wxFormatString argument among fixed
198 // arguments passed to a vararg template
199 struct wxFormatStringArgument
200 {
201 wxFormatStringArgument(const wxFormatString *s = NULL) : m_str(s) {}
202 const wxFormatString *m_str;
203
204 // overriding this operator allows us to reuse _WX_VARARG_JOIN macro
205 wxFormatStringArgument operator,(const wxFormatStringArgument& a) const
206 {
207 wxASSERT_MSG( m_str == NULL || a.m_str == NULL,
208 "can't have two format strings in vararg function" );
209 return wxFormatStringArgument(m_str ? m_str : a.m_str);
210 }
211
212 operator const wxFormatString*() const { return m_str; }
213 };
214
215 template<typename T>
216 struct wxFormatStringArgumentFinder
217 {
218 static wxFormatStringArgument find(T)
219 {
220 // by default, arguments are not format strings, so return "not found"
221 return wxFormatStringArgument();
222 }
223 };
224
225 template<>
226 struct wxFormatStringArgumentFinder<const wxFormatString&>
227 {
228 static wxFormatStringArgument find(const wxFormatString& arg)
229 { return wxFormatStringArgument(&arg); }
230 };
231
232 template<>
233 struct wxFormatStringArgumentFinder<wxFormatString>
234 : public wxFormatStringArgumentFinder<const wxFormatString&> {};
235
236 // avoid passing big objects by value to wxFormatStringArgumentFinder::find()
237 // (and especially wx[W]CharBuffer with its auto_ptr<> style semantics!):
238 template<>
239 struct wxFormatStringArgumentFinder<wxString>
240 : public wxFormatStringArgumentFinder<const wxString&> {};
241
242 template<>
243 struct wxFormatStringArgumentFinder<wxScopedCharBuffer>
244 : public wxFormatStringArgumentFinder<const wxScopedCharBuffer&> {};
245
246 template<>
247 struct wxFormatStringArgumentFinder<wxScopedWCharBuffer>
248 : public wxFormatStringArgumentFinder<const wxScopedWCharBuffer&> {};
249
250 template<>
251 struct wxFormatStringArgumentFinder<wxCharBuffer>
252 : public wxFormatStringArgumentFinder<const wxCharBuffer&> {};
253
254 template<>
255 struct wxFormatStringArgumentFinder<wxWCharBuffer>
256 : public wxFormatStringArgumentFinder<const wxWCharBuffer&> {};
257
258
259 // ----------------------------------------------------------------------------
260 // wxArgNormalizer*<T> converters
261 // ----------------------------------------------------------------------------
262
263 // Converts an argument passed to wxPrint etc. into standard form expected,
264 // by wxXXX functions, e.g. all strings (wxString, char*, wchar_t*) are
265 // converted into wchar_t* or char* depending on the build.
266 template<typename T>
267 struct wxArgNormalizer
268 {
269 // Ctor. 'value' is the value passed as variadic argument, 'fmt' is pointer
270 // to printf-like format string or NULL if the variadic function doesn't
271 // use format string and 'index' is index of 'value' in variadic arguments
272 // list (starting at 1)
273 wxArgNormalizer(T value,
274 const wxFormatString *WXUNUSED(fmt), unsigned WXUNUSED(index))
275 : m_value(value) {}
276
277 // Returns the value in a form that can be safely passed to real vararg
278 // functions. In case of strings, this is char* in ANSI build and wchar_t*
279 // in Unicode build.
280 T get() const { return m_value; }
281
282 T m_value;
283 };
284
285 // normalizer for passing arguments to functions working with wchar_t* (and
286 // until ANSI build is removed, char* in ANSI build as well - FIXME-UTF8)
287 // string representation
288 #if !wxUSE_UTF8_LOCALE_ONLY
289 template<typename T>
290 struct wxArgNormalizerWchar : public wxArgNormalizer<T>
291 {
292 wxArgNormalizerWchar(T value,
293 const wxFormatString *fmt, unsigned index)
294 : wxArgNormalizer<T>(value, fmt, index) {}
295 };
296 #endif // !wxUSE_UTF8_LOCALE_ONLY
297
298 // normalizer for passing arguments to functions working with UTF-8 encoded
299 // char* strings
300 #if wxUSE_UNICODE_UTF8
301 template<typename T>
302 struct wxArgNormalizerUtf8 : public wxArgNormalizer<T>
303 {
304 wxArgNormalizerUtf8(T value,
305 const wxFormatString *fmt, unsigned index)
306 : wxArgNormalizer<T>(value, fmt, index) {}
307 };
308
309 #define wxArgNormalizerNative wxArgNormalizerUtf8
310 #else // wxUSE_UNICODE_WCHAR
311 #define wxArgNormalizerNative wxArgNormalizerWchar
312 #endif // wxUSE_UNICODE_UTF8 // wxUSE_UNICODE_UTF8
313
314
315
316 // special cases for converting strings:
317
318
319 // base class for wxArgNormalizer<T> specializations that need to do conversion;
320 // CharType is either wxStringCharType or wchar_t in UTF-8 build when wrapping
321 // widechar CRT function
322 template<typename CharType>
323 struct wxArgNormalizerWithBuffer
324 {
325 typedef wxScopedCharTypeBuffer<CharType> CharBuffer;
326
327 wxArgNormalizerWithBuffer() {}
328 wxArgNormalizerWithBuffer(const CharBuffer& buf,
329 const wxFormatString *WXUNUSED(fmt),
330 unsigned WXUNUSED(index))
331 : m_value(buf) {}
332
333 const CharType *get() const { return m_value; }
334
335 CharBuffer m_value;
336 };
337
338 // string objects:
339 template<>
340 struct WXDLLIMPEXP_BASE wxArgNormalizerNative<const wxString&>
341 {
342 wxArgNormalizerNative(const wxString& s,
343 const wxFormatString *WXUNUSED(fmt),
344 unsigned WXUNUSED(index))
345 : m_value(s) {}
346
347 const wxStringCharType *get() const;
348
349 const wxString& m_value;
350 };
351
352 // c_str() values:
353 template<>
354 struct WXDLLIMPEXP_BASE wxArgNormalizerNative<const wxCStrData&>
355 {
356 wxArgNormalizerNative(const wxCStrData& value,
357 const wxFormatString *WXUNUSED(fmt),
358 unsigned WXUNUSED(index))
359 : m_value(value) {}
360
361 const wxStringCharType *get() const;
362
363 const wxCStrData& m_value;
364 };
365
366 // wxString/wxCStrData conversion to wchar_t* value
367 #if wxUSE_UNICODE_UTF8 && !wxUSE_UTF8_LOCALE_ONLY
368 template<>
369 struct WXDLLIMPEXP_BASE wxArgNormalizerWchar<const wxString&>
370 : public wxArgNormalizerWithBuffer<wchar_t>
371 {
372 wxArgNormalizerWchar(const wxString& s,
373 const wxFormatString *fmt, unsigned index);
374 };
375
376 template<>
377 struct WXDLLIMPEXP_BASE wxArgNormalizerWchar<const wxCStrData&>
378 : public wxArgNormalizerWithBuffer<wchar_t>
379 {
380 wxArgNormalizerWchar(const wxCStrData& s,
381 const wxFormatString *fmt, unsigned index);
382 };
383 #endif // wxUSE_UNICODE_UTF8 && !wxUSE_UTF8_LOCALE_ONLY
384
385
386 // C string pointers of the wrong type (wchar_t* for ANSI or UTF8 build,
387 // char* for wchar_t Unicode build or UTF8):
388 #if wxUSE_UNICODE_WCHAR
389
390 template<>
391 struct wxArgNormalizerWchar<const char*>
392 : public wxArgNormalizerWithBuffer<wchar_t>
393 {
394 wxArgNormalizerWchar(const char* s,
395 const wxFormatString *fmt, unsigned index)
396 : wxArgNormalizerWithBuffer<wchar_t>(wxConvLibc.cMB2WC(s), fmt, index) {}
397 };
398
399 #elif wxUSE_UNICODE_UTF8
400
401 template<>
402 struct wxArgNormalizerUtf8<const wchar_t*>
403 : public wxArgNormalizerWithBuffer<char>
404 {
405 wxArgNormalizerUtf8(const wchar_t* s,
406 const wxFormatString *fmt, unsigned index)
407 : wxArgNormalizerWithBuffer<char>(wxConvUTF8.cWC2MB(s), fmt, index) {}
408 };
409
410 template<>
411 struct wxArgNormalizerUtf8<const char*>
412 : public wxArgNormalizerWithBuffer<char>
413 {
414 wxArgNormalizerUtf8(const char* s,
415 const wxFormatString *WXUNUSED(fmt),
416 unsigned WXUNUSED(index))
417 {
418 if ( wxLocaleIsUtf8 )
419 {
420 m_value = wxScopedCharBuffer::CreateNonOwned(s);
421 }
422 else
423 {
424 // convert to widechar string first:
425 wxScopedWCharBuffer buf(wxConvLibc.cMB2WC(s));
426
427 // then to UTF-8:
428 if ( buf )
429 m_value = wxConvUTF8.cWC2MB(buf);
430 }
431 }
432 };
433
434 // UTF-8 build needs conversion to wchar_t* too:
435 #if !wxUSE_UTF8_LOCALE_ONLY
436 template<>
437 struct wxArgNormalizerWchar<const char*>
438 : public wxArgNormalizerWithBuffer<wchar_t>
439 {
440 wxArgNormalizerWchar(const char* s,
441 const wxFormatString *fmt, unsigned index)
442 : wxArgNormalizerWithBuffer<wchar_t>(wxConvLibc.cMB2WC(s), fmt, index) {}
443 };
444 #endif // !wxUSE_UTF8_LOCALE_ONLY
445
446 #else // ANSI - FIXME-UTF8
447
448 template<>
449 struct wxArgNormalizerWchar<const wchar_t*>
450 : public wxArgNormalizerWithBuffer<char>
451 {
452 wxArgNormalizerWchar(const wchar_t* s,
453 const wxFormatString *fmt, unsigned index)
454 : wxArgNormalizerWithBuffer<char>(wxConvLibc.cWC2MB(s), fmt, index) {}
455 };
456
457 #endif // wxUSE_UNICODE_WCHAR/wxUSE_UNICODE_UTF8/ANSI
458
459
460 // this macro is used to implement specialization that are exactly same as
461 // some other specialization, i.e. to "forward" the implementation (e.g. for
462 // T=wxString and T=const wxString&). Note that the ctor takes BaseT argument,
463 // not T!
464 #if wxUSE_UNICODE_UTF8
465 #if wxUSE_UTF8_LOCALE_ONLY
466 #define WX_ARG_NORMALIZER_FORWARD(T, BaseT) \
467 _WX_ARG_NORMALIZER_FORWARD_IMPL(wxArgNormalizerUtf8, T, BaseT)
468 #else // possibly non-UTF8 locales
469 #define WX_ARG_NORMALIZER_FORWARD(T, BaseT) \
470 _WX_ARG_NORMALIZER_FORWARD_IMPL(wxArgNormalizerWchar, T, BaseT); \
471 _WX_ARG_NORMALIZER_FORWARD_IMPL(wxArgNormalizerUtf8, T, BaseT)
472 #endif
473 #else // wxUSE_UNICODE_WCHAR
474 #define WX_ARG_NORMALIZER_FORWARD(T, BaseT) \
475 _WX_ARG_NORMALIZER_FORWARD_IMPL(wxArgNormalizerWchar, T, BaseT)
476 #endif // wxUSE_UNICODE_UTF8/wxUSE_UNICODE_WCHAR
477
478 #define _WX_ARG_NORMALIZER_FORWARD_IMPL(Normalizer, T, BaseT) \
479 template<> \
480 struct Normalizer<T> : public Normalizer<BaseT> \
481 { \
482 Normalizer(BaseT value, \
483 const wxFormatString *fmt, unsigned index) \
484 : Normalizer<BaseT>(value, fmt, index) {} \
485 }
486
487 // non-reference versions of specializations for string objects
488 WX_ARG_NORMALIZER_FORWARD(wxString, const wxString&);
489 WX_ARG_NORMALIZER_FORWARD(wxCStrData, const wxCStrData&);
490
491 // versions for passing non-const pointers:
492 WX_ARG_NORMALIZER_FORWARD(char*, const char*);
493 WX_ARG_NORMALIZER_FORWARD(wchar_t*, const wchar_t*);
494
495 // versions for passing wx[W]CharBuffer:
496 WX_ARG_NORMALIZER_FORWARD(wxScopedCharBuffer, const char*);
497 WX_ARG_NORMALIZER_FORWARD(const wxScopedCharBuffer&, const char*);
498 WX_ARG_NORMALIZER_FORWARD(wxScopedWCharBuffer, const wchar_t*);
499 WX_ARG_NORMALIZER_FORWARD(const wxScopedWCharBuffer&, const wchar_t*);
500 WX_ARG_NORMALIZER_FORWARD(wxCharBuffer, const char*);
501 WX_ARG_NORMALIZER_FORWARD(const wxCharBuffer&, const char*);
502 WX_ARG_NORMALIZER_FORWARD(wxWCharBuffer, const wchar_t*);
503 WX_ARG_NORMALIZER_FORWARD(const wxWCharBuffer&, const wchar_t*);
504
505 // versions for std::[w]string:
506 #if wxUSE_STD_STRING
507
508 #include "wx/stringimpl.h"
509
510 #if !wxUSE_UTF8_LOCALE_ONLY
511 template<>
512 struct wxArgNormalizerWchar<const std::string&>
513 : public wxArgNormalizerWchar<const char*>
514 {
515 wxArgNormalizerWchar(const std::string& s,
516 const wxFormatString *fmt, unsigned index)
517 : wxArgNormalizerWchar<const char*>(s.c_str(), fmt, index) {}
518 };
519
520 template<>
521 struct wxArgNormalizerWchar<const wxStdWideString&>
522 : public wxArgNormalizerWchar<const wchar_t*>
523 {
524 wxArgNormalizerWchar(const wxStdWideString& s,
525 const wxFormatString *fmt, unsigned index)
526 : wxArgNormalizerWchar<const wchar_t*>(s.c_str(), fmt, index) {}
527 };
528 #endif // !wxUSE_UTF8_LOCALE_ONLY
529
530 #if wxUSE_UNICODE_UTF8
531 template<>
532 struct wxArgNormalizerUtf8<const std::string&>
533 : public wxArgNormalizerUtf8<const char*>
534 {
535 wxArgNormalizerUtf8(const std::string& s,
536 const wxFormatString *fmt, unsigned index)
537 : wxArgNormalizerUtf8<const char*>(s.c_str(), fmt, index) {}
538 };
539
540 template<>
541 struct wxArgNormalizerUtf8<const wxStdWideString&>
542 : public wxArgNormalizerUtf8<const wchar_t*>
543 {
544 wxArgNormalizerUtf8(const wxStdWideString& s,
545 const wxFormatString *fmt, unsigned index)
546 : wxArgNormalizerUtf8<const wchar_t*>(s.c_str(), fmt, index) {}
547 };
548 #endif // wxUSE_UNICODE_UTF8
549
550 WX_ARG_NORMALIZER_FORWARD(std::string, const std::string&);
551 WX_ARG_NORMALIZER_FORWARD(wxStdWideString, const wxStdWideString&);
552
553 #endif // wxUSE_STD_STRING
554
555
556 // versions for wxUniChar, wxUniCharRef:
557 // (this is same for UTF-8 and Wchar builds, we just convert to wchar_t)
558 template<>
559 struct wxArgNormalizer<const wxUniChar&> : public wxArgNormalizer<wchar_t>
560 {
561 wxArgNormalizer(const wxUniChar& s,
562 const wxFormatString *fmt, unsigned index)
563 : wxArgNormalizer<wchar_t>(s.GetValue(), fmt, index) {}
564 };
565
566 // for wchar_t, default handler does the right thing
567
568 // char has to be treated differently in Unicode builds: a char argument may
569 // be used either for a character value (which should be converted into
570 // wxUniChar) or as an integer value (which should be left as-is). We take
571 // advantage of the fact that both char and wchar_t are converted into int
572 // in variadic arguments here.
573 #if wxUSE_UNICODE
574 template<typename T>
575 struct wxArgNormalizerNarrowChar
576 {
577 wxArgNormalizerNarrowChar(T value,
578 const wxFormatString *fmt, unsigned index)
579 {
580 // FIXME-UTF8: which one is better default in absence of fmt string
581 // (i.e. when used like e.g. Foo("foo", "bar", 'c', NULL)?
582 if ( !fmt || fmt->GetArgumentType(index) == wxFormatString::Arg_Char )
583 m_value = wx_truncate_cast(T, wxUniChar(value).GetValue());
584 else
585 m_value = value;
586 }
587
588 int get() const { return m_value; }
589
590 T m_value;
591 };
592
593 template<>
594 struct wxArgNormalizer<char> : public wxArgNormalizerNarrowChar<char>
595 {
596 wxArgNormalizer(char value,
597 const wxFormatString *fmt, unsigned index)
598 : wxArgNormalizerNarrowChar<char>(value, fmt, index) {}
599 };
600
601 template<>
602 struct wxArgNormalizer<unsigned char>
603 : public wxArgNormalizerNarrowChar<unsigned char>
604 {
605 wxArgNormalizer(unsigned char value,
606 const wxFormatString *fmt, unsigned index)
607 : wxArgNormalizerNarrowChar<unsigned char>(value, fmt, index) {}
608 };
609
610 #endif // wxUSE_UNICODE
611
612 // convert references:
613 WX_ARG_NORMALIZER_FORWARD(wxUniChar, const wxUniChar&);
614 WX_ARG_NORMALIZER_FORWARD(const wxUniCharRef&, const wxUniChar&);
615 WX_ARG_NORMALIZER_FORWARD(wxUniCharRef, const wxUniChar&);
616 WX_ARG_NORMALIZER_FORWARD(const wchar_t&, wchar_t);
617
618 WX_ARG_NORMALIZER_FORWARD(const char&, char);
619 WX_ARG_NORMALIZER_FORWARD(const unsigned char&, unsigned char);
620
621
622 #undef WX_ARG_NORMALIZER_FORWARD
623 #undef _WX_ARG_NORMALIZER_FORWARD_IMPL
624
625 // ----------------------------------------------------------------------------
626 // WX_VA_ARG_STRING
627 // ----------------------------------------------------------------------------
628
629 // Replacement for va_arg() for use with strings in functions that accept
630 // strings normalized by wxArgNormalizer<T>:
631
632 struct WXDLLIMPEXP_BASE wxArgNormalizedString
633 {
634 wxArgNormalizedString(const void* ptr) : m_ptr(ptr) {}
635
636 // returns true if non-NULL string was passed in
637 bool IsValid() const { return m_ptr != NULL; }
638 operator bool() const { return IsValid(); }
639
640 // extracts the string, returns empty string if NULL was passed in
641 wxString GetString() const;
642 operator wxString() const;
643
644 private:
645 const void *m_ptr;
646 };
647
648 #define WX_VA_ARG_STRING(ap) wxArgNormalizedString(va_arg(ap, const void*))
649
650 // ----------------------------------------------------------------------------
651 // implementation of the WX_DEFINE_VARARG_* macros
652 // ----------------------------------------------------------------------------
653
654 // NB: The vararg emulation code is limited to 30 variadic and 4 fixed
655 // arguments at the moment.
656 // If you need more variadic arguments, you need to
657 // 1) increase the value of _WX_VARARG_MAX_ARGS
658 // 2) add _WX_VARARG_JOIN_* and _WX_VARARG_ITER_* up to the new
659 // _WX_VARARG_MAX_ARGS value to the lists below
660 // If you need more fixed arguments, you need to
661 // 1) increase the value of _WX_VARARG_MAX_FIXED_ARGS
662 // 2) add _WX_VARARG_FIXED_EXPAND_* and _WX_VARARG_FIXED_UNUSED_EXPAND_*
663 // macros below
664 #define _WX_VARARG_MAX_ARGS 30
665 #define _WX_VARARG_MAX_FIXED_ARGS 4
666
667 #define _WX_VARARG_JOIN_1(m) m(1)
668 #define _WX_VARARG_JOIN_2(m) _WX_VARARG_JOIN_1(m), m(2)
669 #define _WX_VARARG_JOIN_3(m) _WX_VARARG_JOIN_2(m), m(3)
670 #define _WX_VARARG_JOIN_4(m) _WX_VARARG_JOIN_3(m), m(4)
671 #define _WX_VARARG_JOIN_5(m) _WX_VARARG_JOIN_4(m), m(5)
672 #define _WX_VARARG_JOIN_6(m) _WX_VARARG_JOIN_5(m), m(6)
673 #define _WX_VARARG_JOIN_7(m) _WX_VARARG_JOIN_6(m), m(7)
674 #define _WX_VARARG_JOIN_8(m) _WX_VARARG_JOIN_7(m), m(8)
675 #define _WX_VARARG_JOIN_9(m) _WX_VARARG_JOIN_8(m), m(9)
676 #define _WX_VARARG_JOIN_10(m) _WX_VARARG_JOIN_9(m), m(10)
677 #define _WX_VARARG_JOIN_11(m) _WX_VARARG_JOIN_10(m), m(11)
678 #define _WX_VARARG_JOIN_12(m) _WX_VARARG_JOIN_11(m), m(12)
679 #define _WX_VARARG_JOIN_13(m) _WX_VARARG_JOIN_12(m), m(13)
680 #define _WX_VARARG_JOIN_14(m) _WX_VARARG_JOIN_13(m), m(14)
681 #define _WX_VARARG_JOIN_15(m) _WX_VARARG_JOIN_14(m), m(15)
682 #define _WX_VARARG_JOIN_16(m) _WX_VARARG_JOIN_15(m), m(16)
683 #define _WX_VARARG_JOIN_17(m) _WX_VARARG_JOIN_16(m), m(17)
684 #define _WX_VARARG_JOIN_18(m) _WX_VARARG_JOIN_17(m), m(18)
685 #define _WX_VARARG_JOIN_19(m) _WX_VARARG_JOIN_18(m), m(19)
686 #define _WX_VARARG_JOIN_20(m) _WX_VARARG_JOIN_19(m), m(20)
687 #define _WX_VARARG_JOIN_21(m) _WX_VARARG_JOIN_20(m), m(21)
688 #define _WX_VARARG_JOIN_22(m) _WX_VARARG_JOIN_21(m), m(22)
689 #define _WX_VARARG_JOIN_23(m) _WX_VARARG_JOIN_22(m), m(23)
690 #define _WX_VARARG_JOIN_24(m) _WX_VARARG_JOIN_23(m), m(24)
691 #define _WX_VARARG_JOIN_25(m) _WX_VARARG_JOIN_24(m), m(25)
692 #define _WX_VARARG_JOIN_26(m) _WX_VARARG_JOIN_25(m), m(26)
693 #define _WX_VARARG_JOIN_27(m) _WX_VARARG_JOIN_26(m), m(27)
694 #define _WX_VARARG_JOIN_28(m) _WX_VARARG_JOIN_27(m), m(28)
695 #define _WX_VARARG_JOIN_29(m) _WX_VARARG_JOIN_28(m), m(29)
696 #define _WX_VARARG_JOIN_30(m) _WX_VARARG_JOIN_29(m), m(30)
697
698 #define _WX_VARARG_ITER_1(m,a,b,c,d,e,f) m(1,a,b,c,d,e,f)
699 #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)
700 #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)
701 #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)
702 #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)
703 #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)
704 #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)
705 #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)
706 #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)
707 #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)
708 #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)
709 #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)
710 #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)
711 #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)
712 #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)
713 #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)
714 #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)
715 #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)
716 #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)
717 #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)
718 #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)
719 #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)
720 #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)
721 #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)
722 #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)
723 #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)
724 #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)
725 #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)
726 #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)
727 #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)
728
729
730 #define _WX_VARARG_FIXED_EXPAND_1(t1) \
731 t1 f1
732 #define _WX_VARARG_FIXED_EXPAND_2(t1,t2) \
733 t1 f1, t2 f2
734 #define _WX_VARARG_FIXED_EXPAND_3(t1,t2,t3) \
735 t1 f1, t2 f2, t3 f3
736 #define _WX_VARARG_FIXED_EXPAND_4(t1,t2,t3,t4) \
737 t1 f1, t2 f2, t3 f3, t4 f4
738
739 #define _WX_VARARG_FIXED_UNUSED_EXPAND_1(t1) \
740 t1 WXUNUSED(f1)
741 #define _WX_VARARG_FIXED_UNUSED_EXPAND_2(t1,t2) \
742 t1 WXUNUSED(f1), t2 WXUNUSED(f2)
743 #define _WX_VARARG_FIXED_UNUSED_EXPAND_3(t1,t2,t3) \
744 t1 WXUNUSED(f1), t2 WXUNUSED(f2), t3 WXUNUSED(f3)
745 #define _WX_VARARG_FIXED_UNUSED_EXPAND_4(t1,t2,t3,t4) \
746 t1 WXUNUSED(f1), t2 WXUNUSED(f2), t3 WXUNUSED(f3), t4 WXUNUSED(f4)
747
748 #define _WX_VARARG_FIXED_TYPEDEFS_1(t1) \
749 typedef t1 TF1
750 #define _WX_VARARG_FIXED_TYPEDEFS_2(t1,t2) \
751 _WX_VARARG_FIXED_TYPEDEFS_1(t1); typedef t2 TF2
752 #define _WX_VARARG_FIXED_TYPEDEFS_3(t1,t2,t3) \
753 _WX_VARARG_FIXED_TYPEDEFS_2(t1,t2); typedef t3 TF3
754 #define _WX_VARARG_FIXED_TYPEDEFS_4(t1,t2,t3,t4) \
755 _WX_VARARG_FIXED_TYPEDEFS_3(t1,t2,t3); typedef t4 TF4
756
757 // This macro expands N-items tuple of fixed arguments types into part of
758 // function's declaration. For example,
759 // "_WX_VARARG_FIXED_EXPAND(3, (int, char*, int))" expands into
760 // "int f1, char* f2, int f3".
761 #define _WX_VARARG_FIXED_EXPAND(N, args) \
762 _WX_VARARG_FIXED_EXPAND_IMPL(N, args)
763 #define _WX_VARARG_FIXED_EXPAND_IMPL(N, args) \
764 _WX_VARARG_FIXED_EXPAND_##N args
765
766 // Ditto for unused arguments
767 #define _WX_VARARG_FIXED_UNUSED_EXPAND(N, args) \
768 _WX_VARARG_FIXED_UNUSED_EXPAND_IMPL(N, args)
769 #define _WX_VARARG_FIXED_UNUSED_EXPAND_IMPL(N, args) \
770 _WX_VARARG_FIXED_UNUSED_EXPAND_##N args
771
772 // Declarates typedefs for fixed arguments types; i-th fixed argument types
773 // will have TFi typedef.
774 #define _WX_VARARG_FIXED_TYPEDEFS(N, args) \
775 _WX_VARARG_FIXED_TYPEDEFS_IMPL(N, args)
776 #define _WX_VARARG_FIXED_TYPEDEFS_IMPL(N, args) \
777 _WX_VARARG_FIXED_TYPEDEFS_##N args
778
779
780 // This macro calls another macro 'm' passed as second argument 'N' times,
781 // with its only argument set to 1..N, and concatenates the results using
782 // comma as separator.
783 //
784 // An example:
785 // #define foo(i) x##i
786 // // this expands to "x1,x2,x3,x4"
787 // _WX_VARARG_JOIN(4, foo)
788 //
789 //
790 // N must not be greater than _WX_VARARG_MAX_ARGS (=30).
791 #define _WX_VARARG_JOIN(N, m) _WX_VARARG_JOIN_IMPL(N, m)
792 #define _WX_VARARG_JOIN_IMPL(N, m) _WX_VARARG_JOIN_##N(m)
793
794
795 // This macro calls another macro 'm' passed as second argument 'N' times, with
796 // its first argument set to 1..N and the remaining arguments set to 'a', 'b',
797 // 'c', 'd', 'e' and 'f'. The results are separated with whitespace in the
798 // expansion.
799 //
800 // An example:
801 // // this macro expands to:
802 // // foo(1,a,b,c,d,e,f)
803 // // foo(2,a,b,c,d,e,f)
804 // // foo(3,a,b,c,d,e,f)
805 // _WX_VARARG_ITER(3, foo, a, b, c, d, e, f)
806 //
807 // N must not be greater than _WX_VARARG_MAX_ARGS (=30).
808 #define _WX_VARARG_ITER(N,m,a,b,c,d,e,f) \
809 _WX_VARARG_ITER_IMPL(N,m,a,b,c,d,e,f)
810 #define _WX_VARARG_ITER_IMPL(N,m,a,b,c,d,e,f) \
811 _WX_VARARG_ITER_##N(m,a,b,c,d,e,f)
812
813 // Generates code snippet for i-th "variadic" argument in vararg function's
814 // prototype:
815 #define _WX_VARARG_ARG(i) T##i a##i
816
817 // Like _WX_VARARG_ARG_UNUSED, but outputs argument's type with WXUNUSED:
818 #define _WX_VARARG_ARG_UNUSED(i) T##i WXUNUSED(a##i)
819
820 // Generates code snippet for i-th type in vararg function's template<...>:
821 #define _WX_VARARG_TEMPL(i) typename T##i
822
823 // Generates code snippet for passing i-th argument of vararg function
824 // wrapper to its implementation, normalizing it in the process:
825 #define _WX_VARARG_PASS_WCHAR(i) \
826 wxArgNormalizerWchar<T##i>(a##i, fmt, i).get()
827 #define _WX_VARARG_PASS_UTF8(i) \
828 wxArgNormalizerUtf8<T##i>(a##i, fmt, i).get()
829
830
831 // And the same for fixed arguments, _not_ normalizing it:
832 #define _WX_VARARG_PASS_FIXED(i) f##i
833
834 #define _WX_VARARG_FIND_FMT(i) \
835 (wxFormatStringArgumentFinder<TF##i>::find(f##i))
836
837 #define _WX_VARARG_FORMAT_STRING(numfixed, fixed) \
838 _WX_VARARG_FIXED_TYPEDEFS(numfixed, fixed); \
839 const wxFormatString *fmt = \
840 (_WX_VARARG_JOIN(numfixed, _WX_VARARG_FIND_FMT))
841
842 #if wxUSE_UNICODE_UTF8
843 #define _WX_VARARG_DO_CALL_UTF8(return_kw, impl, implUtf8, N, numfixed) \
844 return_kw implUtf8(_WX_VARARG_JOIN(numfixed, _WX_VARARG_PASS_FIXED), \
845 _WX_VARARG_JOIN(N, _WX_VARARG_PASS_UTF8))
846 #define _WX_VARARG_DO_CALL0_UTF8(return_kw, impl, implUtf8, numfixed) \
847 return_kw implUtf8(_WX_VARARG_JOIN(numfixed, _WX_VARARG_PASS_FIXED))
848 #endif // wxUSE_UNICODE_UTF8
849
850 #define _WX_VARARG_DO_CALL_WCHAR(return_kw, impl, implUtf8, N, numfixed) \
851 return_kw impl(_WX_VARARG_JOIN(numfixed, _WX_VARARG_PASS_FIXED), \
852 _WX_VARARG_JOIN(N, _WX_VARARG_PASS_WCHAR))
853 #define _WX_VARARG_DO_CALL0_WCHAR(return_kw, impl, implUtf8, numfixed) \
854 return_kw impl(_WX_VARARG_JOIN(numfixed, _WX_VARARG_PASS_FIXED))
855
856 #if wxUSE_UNICODE_UTF8
857 #if wxUSE_UTF8_LOCALE_ONLY
858 #define _WX_VARARG_DO_CALL _WX_VARARG_DO_CALL_UTF8
859 #define _WX_VARARG_DO_CALL0 _WX_VARARG_DO_CALL0_UTF8
860 #else // possibly non-UTF8 locales
861 #define _WX_VARARG_DO_CALL(return_kw, impl, implUtf8, N, numfixed) \
862 if ( wxLocaleIsUtf8 ) \
863 _WX_VARARG_DO_CALL_UTF8(return_kw, impl, implUtf8, N, numfixed);\
864 else \
865 _WX_VARARG_DO_CALL_WCHAR(return_kw, impl, implUtf8, N, numfixed)
866
867 #define _WX_VARARG_DO_CALL0(return_kw, impl, implUtf8, numfixed) \
868 if ( wxLocaleIsUtf8 ) \
869 _WX_VARARG_DO_CALL0_UTF8(return_kw, impl, implUtf8, numfixed); \
870 else \
871 _WX_VARARG_DO_CALL0_WCHAR(return_kw, impl, implUtf8, numfixed)
872 #endif // wxUSE_UTF8_LOCALE_ONLY or not
873 #else // wxUSE_UNICODE_WCHAR or ANSI
874 #define _WX_VARARG_DO_CALL _WX_VARARG_DO_CALL_WCHAR
875 #define _WX_VARARG_DO_CALL0 _WX_VARARG_DO_CALL0_WCHAR
876 #endif // wxUSE_UNICODE_UTF8 / wxUSE_UNICODE_WCHAR
877
878
879 // Macro to be used with _WX_VARARG_ITER in the implementation of
880 // WX_DEFINE_VARARG_FUNC (see its documentation for the meaning of arguments)
881 #define _WX_VARARG_DEFINE_FUNC(N, rettype, name, \
882 impl, implUtf8, numfixed, fixed) \
883 template<_WX_VARARG_JOIN(N, _WX_VARARG_TEMPL)> \
884 rettype name(_WX_VARARG_FIXED_EXPAND(numfixed, fixed), \
885 _WX_VARARG_JOIN(N, _WX_VARARG_ARG)) \
886 { \
887 _WX_VARARG_FORMAT_STRING(numfixed, fixed); \
888 _WX_VARARG_DO_CALL(return, impl, implUtf8, N, numfixed); \
889 }
890
891 #define _WX_VARARG_DEFINE_FUNC_N0(rettype, name, \
892 impl, implUtf8, numfixed, fixed) \
893 inline rettype name(_WX_VARARG_FIXED_EXPAND(numfixed, fixed)) \
894 { \
895 _WX_VARARG_DO_CALL0(return, impl, implUtf8, numfixed); \
896 }
897
898 // Macro to be used with _WX_VARARG_ITER in the implementation of
899 // WX_DEFINE_VARARG_FUNC_VOID (see its documentation for the meaning of
900 // arguments; rettype is ignored and is used only to satisfy _WX_VARARG_ITER's
901 // requirements).
902 #define _WX_VARARG_DEFINE_FUNC_VOID(N, rettype, name, \
903 impl, implUtf8, numfixed, fixed) \
904 template<_WX_VARARG_JOIN(N, _WX_VARARG_TEMPL)> \
905 void name(_WX_VARARG_FIXED_EXPAND(numfixed, fixed), \
906 _WX_VARARG_JOIN(N, _WX_VARARG_ARG)) \
907 { \
908 _WX_VARARG_FORMAT_STRING(numfixed, fixed); \
909 _WX_VARARG_DO_CALL(wxEMPTY_PARAMETER_VALUE, \
910 impl, implUtf8, N, numfixed); \
911 }
912
913 #define _WX_VARARG_DEFINE_FUNC_VOID_N0(name, impl, implUtf8, numfixed, fixed) \
914 inline void name(_WX_VARARG_FIXED_EXPAND(numfixed, fixed)) \
915 { \
916 _WX_VARARG_DO_CALL0(wxEMPTY_PARAMETER_VALUE, \
917 impl, implUtf8, numfixed); \
918 }
919
920 // Macro to be used with _WX_VARARG_ITER in the implementation of
921 // WX_DEFINE_VARARG_FUNC_CTOR (see its documentation for the meaning of
922 // arguments; rettype is ignored and is used only to satisfy _WX_VARARG_ITER's
923 // requirements).
924 #define _WX_VARARG_DEFINE_FUNC_CTOR(N, rettype, name, \
925 impl, implUtf8, numfixed, fixed) \
926 template<_WX_VARARG_JOIN(N, _WX_VARARG_TEMPL)> \
927 name(_WX_VARARG_FIXED_EXPAND(numfixed, fixed), \
928 _WX_VARARG_JOIN(N, _WX_VARARG_ARG)) \
929 { \
930 _WX_VARARG_FORMAT_STRING(numfixed, fixed); \
931 _WX_VARARG_DO_CALL(wxEMPTY_PARAMETER_VALUE, \
932 impl, implUtf8, N, numfixed); \
933 }
934
935 #define _WX_VARARG_DEFINE_FUNC_CTOR_N0(name, impl, implUtf8, numfixed, fixed) \
936 inline name(_WX_VARARG_FIXED_EXPAND(numfixed, fixed)) \
937 { \
938 _WX_VARARG_DO_CALL0(wxEMPTY_PARAMETER_VALUE, \
939 impl, implUtf8, numfixed); \
940 }
941
942 // Macro to be used with _WX_VARARG_ITER in the implementation of
943 // WX_DEFINE_VARARG_FUNC_NOP, i.e. empty stub for a disabled vararg function.
944 // The rettype and impl arguments are ignored.
945 #define _WX_VARARG_DEFINE_FUNC_NOP(N, rettype, name, \
946 impl, implUtf8, numfixed, fixed) \
947 template<_WX_VARARG_JOIN(N, _WX_VARARG_TEMPL)> \
948 void name(_WX_VARARG_FIXED_UNUSED_EXPAND(numfixed, fixed), \
949 _WX_VARARG_JOIN(N, _WX_VARARG_ARG_UNUSED)) \
950 {}
951
952 #define _WX_VARARG_DEFINE_FUNC_NOP_N0(name, numfixed, fixed) \
953 inline void name(_WX_VARARG_FIXED_UNUSED_EXPAND(numfixed, fixed)) \
954 {}
955
956
957 // ----------------------------------------------------------------------------
958 // workaround for OpenWatcom bug #351
959 // ----------------------------------------------------------------------------
960
961 #ifdef __WATCOMC__
962 // workaround for http://bugzilla.openwatcom.org/show_bug.cgi?id=351
963
964 // This macro can be used to forward a 'vararg' template to another one with
965 // different fixed arguments types. Parameters are same as for
966 // WX_DEFINE_VARARG_FUNC (rettype=void can be used here), 'convfixed' is how
967 // to convert fixed arguments. For example, this is typical code for dealing
968 // with different forms of format string:
969 //
970 // WX_DEFINE_VARARG_FUNC_VOID(Printf, 1, (const wxFormatString&),
971 // DoPrintfWchar, DoPrintfUtf8)
972 // #ifdef __WATCOMC__
973 // WX_VARARG_WATCOM_WORKAROUND(void, Printf, 1, (const wxString&),
974 // (wxFormatString(f1)))
975 // WX_VARARG_WATCOM_WORKAROUND(void, Printf, 1, (const char*),
976 // (wxFormatString(f1)))
977 // ...
978 #define WX_VARARG_WATCOM_WORKAROUND(rettype, name, numfixed, fixed, convfixed)\
979 _WX_VARARG_ITER(_WX_VARARG_MAX_ARGS, \
980 _WX_VARARG_WATCOM_WORKAROUND, \
981 rettype, name, convfixed, dummy, numfixed, fixed)
982
983 #define WX_VARARG_WATCOM_WORKAROUND_CTOR(name, numfixed, fixed, convfixed) \
984 _WX_VARARG_ITER(_WX_VARARG_MAX_ARGS, \
985 _WX_VARARG_WATCOM_WORKAROUND_CTOR, \
986 dummy, name, convfixed, dummy, numfixed, fixed)
987
988 #define _WX_VARARG_WATCOM_UNPACK_1(a1) a1
989 #define _WX_VARARG_WATCOM_UNPACK_2(a1, a2) a1, a2
990 #define _WX_VARARG_WATCOM_UNPACK_3(a1, a2, a3) a1, a2, a3
991 #define _WX_VARARG_WATCOM_UNPACK_4(a1, a2, a3, a4) a1, a2, a3, a4
992 #define _WX_VARARG_WATCOM_UNPACK(N, convfixed) \
993 _WX_VARARG_WATCOM_UNPACK_##N convfixed
994
995 #define _WX_VARARG_PASS_WATCOM(i) a##i
996
997 #define _WX_VARARG_WATCOM_WORKAROUND(N, rettype, name, \
998 convfixed, dummy, numfixed, fixed) \
999 template<_WX_VARARG_JOIN(N, _WX_VARARG_TEMPL)> \
1000 rettype name(_WX_VARARG_FIXED_EXPAND(numfixed, fixed), \
1001 _WX_VARARG_JOIN(N, _WX_VARARG_ARG)) \
1002 { \
1003 return name(_WX_VARARG_WATCOM_UNPACK(numfixed, convfixed), \
1004 _WX_VARARG_JOIN(N, _WX_VARARG_PASS_WATCOM)); \
1005 }
1006
1007 #define _WX_VARARG_WATCOM_WORKAROUND_CTOR(N, dummy1, name, \
1008 convfixed, dummy2, numfixed, fixed) \
1009 template<_WX_VARARG_JOIN(N, _WX_VARARG_TEMPL)> \
1010 name(_WX_VARARG_FIXED_EXPAND(numfixed, fixed), \
1011 _WX_VARARG_JOIN(N, _WX_VARARG_ARG)) \
1012 { \
1013 name(_WX_VARARG_WATCOM_UNPACK(numfixed, convfixed), \
1014 _WX_VARARG_JOIN(N, _WX_VARARG_PASS_WATCOM)); \
1015 }
1016
1017 #endif // __WATCOMC__
1018
1019 #endif // _WX_STRVARARG_H_
wxWidgets (Impactor)