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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 #if defined(HAVE_TYPE_TRAITS)
26 #include <type_traits>
27 #elif defined(HAVE_TR1_TYPE_TRAITS)
28 #ifdef __VISUALC__
29 #include <type_traits>
30 #else
31 #include <tr1/type_traits>
32 #endif
33 #endif
34
35 class WXDLLIMPEXP_FWD_BASE wxCStrData;
36 class WXDLLIMPEXP_FWD_BASE wxString;
37
38 // ----------------------------------------------------------------------------
39 // WX_DEFINE_VARARG_FUNC* macros
40 // ----------------------------------------------------------------------------
41
42 // This macro is used to implement type-safe wrappers for variadic functions
43 // that accept strings as arguments. This makes it possible to pass char*,
44 // wchar_t* or even wxString (as opposed to having to use wxString::c_str())
45 // to e.g. wxPrintf().
46 //
47 // This is done by defining a set of N template function taking 1..N arguments
48 // (currently, N is set to 30 in this header). These functions are just thin
49 // wrappers around another variadic function ('impl' or 'implUtf8' arguments,
50 // see below) and the only thing the wrapper does is that it normalizes the
51 // arguments passed in so that they are of the type expected by variadic
52 // functions taking string arguments, i.e., char* or wchar_t*, depending on the
53 // build:
54 // * char* in the current locale's charset in ANSI build
55 // * char* with UTF-8 encoding if wxUSE_UNICODE_UTF8 and the app is running
56 // under an UTF-8 locale
57 // * wchar_t* if wxUSE_UNICODE_WCHAR or if wxUSE_UNICODE_UTF8 and the current
58 // locale is not UTF-8
59 //
60 // Note that wxFormatString *must* be used for the format parameter of these
61 // functions, otherwise the implementation won't work correctly. Furthermore,
62 // it must be passed by value, not reference, because it's modified by the
63 // vararg templates internally.
64 //
65 // Parameters:
66 // [ there are examples in square brackets showing values of the parameters
67 // for the wxFprintf() wrapper for fprintf() function with the following
68 // prototype:
69 // int wxFprintf(FILE *stream, const wxString& format, ...); ]
70 //
71 // rettype Functions' return type [int]
72 // name Name of the function [fprintf]
73 // numfixed The number of leading "fixed" (i.e., not variadic)
74 // arguments of the function (e.g. "stream" and "format"
75 // arguments of fprintf()); their type is _not_ converted
76 // using wxArgNormalizer<T>, unlike the rest of
77 // the function's arguments [2]
78 // fixed List of types of the leading "fixed" arguments, in
79 // parenthesis [(FILE*,const wxString&)]
80 // impl Name of the variadic function that implements 'name' for
81 // the native strings representation (wchar_t* if
82 // wxUSE_UNICODE_WCHAR or wxUSE_UNICODE_UTF8 when running under
83 // non-UTF8 locale, char* in ANSI build) [wxCrt_Fprintf]
84 // implUtf8 Like 'impl', but for the UTF-8 char* version to be used
85 // if wxUSE_UNICODE_UTF8 and running under UTF-8 locale
86 // (ignored otherwise) [fprintf]
87 //
88 #define WX_DEFINE_VARARG_FUNC(rettype, name, numfixed, fixed, impl, implUtf8) \
89 _WX_VARARG_DEFINE_FUNC_N0(rettype, name, impl, implUtf8, numfixed, fixed) \
90 WX_DEFINE_VARARG_FUNC_SANS_N0(rettype, name, numfixed, fixed, impl, implUtf8)
91
92 // ditto, but without the version with 0 template/vararg arguments
93 #define WX_DEFINE_VARARG_FUNC_SANS_N0(rettype, name, \
94 numfixed, fixed, impl, implUtf8) \
95 _WX_VARARG_ITER(_WX_VARARG_MAX_ARGS, \
96 _WX_VARARG_DEFINE_FUNC, \
97 rettype, name, impl, implUtf8, numfixed, fixed)
98
99 // Like WX_DEFINE_VARARG_FUNC, but for variadic functions that don't return
100 // a value.
101 #define WX_DEFINE_VARARG_FUNC_VOID(name, numfixed, fixed, impl, implUtf8) \
102 _WX_VARARG_DEFINE_FUNC_VOID_N0(name, impl, implUtf8, numfixed, fixed) \
103 _WX_VARARG_ITER(_WX_VARARG_MAX_ARGS, \
104 _WX_VARARG_DEFINE_FUNC_VOID, \
105 void, name, impl, implUtf8, numfixed, fixed)
106
107 // Like WX_DEFINE_VARARG_FUNC_VOID, but instead of wrapping an implementation
108 // function, does nothing in defined functions' bodies.
109 //
110 // Used to implement wxLogXXX functions if wxUSE_LOG=0.
111 #define WX_DEFINE_VARARG_FUNC_NOP(name, numfixed, fixed) \
112 _WX_VARARG_DEFINE_FUNC_NOP_N0(name, numfixed, fixed) \
113 _WX_VARARG_ITER(_WX_VARARG_MAX_ARGS, \
114 _WX_VARARG_DEFINE_FUNC_NOP, \
115 void, name, dummy, dummy, numfixed, fixed)
116
117 // Like WX_DEFINE_VARARG_FUNC_CTOR, but for defining template constructors
118 #define WX_DEFINE_VARARG_FUNC_CTOR(name, numfixed, fixed, impl, implUtf8) \
119 _WX_VARARG_DEFINE_FUNC_CTOR_N0(name, impl, implUtf8, numfixed, fixed) \
120 _WX_VARARG_ITER(_WX_VARARG_MAX_ARGS, \
121 _WX_VARARG_DEFINE_FUNC_CTOR, \
122 void, name, impl, implUtf8, numfixed, fixed)
123
124
125 // ----------------------------------------------------------------------------
126 // wxFormatString
127 // ----------------------------------------------------------------------------
128
129 // This class must be used for format string argument of the functions
130 // defined using WX_DEFINE_VARARG_FUNC_* macros. It converts the string to
131 // char* or wchar_t* for passing to implementation function efficiently (i.e.
132 // without keeping the converted string in memory for longer than necessary,
133 // like c_str()). It also converts format string to the correct form that
134 // accounts for string changes done by wxArgNormalizer<>
135 //
136 // Note that this class can _only_ be used for function arguments!
137 class WXDLLIMPEXP_BASE wxFormatString
138 {
139 public:
140 wxFormatString(const char *str)
141 : m_char(wxScopedCharBuffer::CreateNonOwned(str)), m_str(NULL), m_cstr(NULL) {}
142 wxFormatString(const wchar_t *str)
143 : m_wchar(wxScopedWCharBuffer::CreateNonOwned(str)), m_str(NULL), m_cstr(NULL) {}
144 wxFormatString(const wxString& str)
145 : m_str(&str), m_cstr(NULL) {}
146 wxFormatString(const wxCStrData& str)
147 : m_str(NULL), m_cstr(&str) {}
148 wxFormatString(const wxScopedCharBuffer& str)
149 : m_char(str), m_str(NULL), m_cstr(NULL) {}
150 wxFormatString(const wxScopedWCharBuffer& str)
151 : m_wchar(str), m_str(NULL), m_cstr(NULL) {}
152
153 // Possible argument types. These are or-combinable for wxASSERT_ARG_TYPE
154 // convenience. Some of the values are or-combined with another value, this
155 // expresses "supertypes" for use with wxASSERT_ARG_TYPE masks. For example,
156 // a char* string is also a pointer and an integer is also a char.
157 enum ArgumentType
158 {
159 Arg_Char = 0x0001, // character as char %c
160 Arg_Pointer = 0x0002, // %p
161 Arg_String = 0x0004 | Arg_Pointer, // any form of string (%s and %p too)
162
163 Arg_Int = 0x0008 | Arg_Char, // (ints can be used with %c)
164 #if SIZEOF_INT == SIZEOF_LONG
165 Arg_LongInt = Arg_Int,
166 #else
167 Arg_LongInt = 0x0010,
168 #endif
169 #if defined(SIZEOF_LONG_LONG) && SIZEOF_LONG_LONG == SIZEOF_LONG
170 Arg_LongLongInt = Arg_LongInt,
171 #elif defined(wxLongLong_t)
172 Arg_LongLongInt = 0x0020,
173 #endif
174
175 Arg_Double = 0x0040,
176 Arg_LongDouble = 0x0080,
177
178 #if defined(wxSIZE_T_IS_UINT)
179 Arg_Size_t = Arg_Int,
180 #elif defined(wxSIZE_T_IS_ULONG)
181 Arg_Size_t = Arg_LongInt,
182 #elif defined(SIZEOF_LONG_LONG) && SIZEOF_SIZE_T == SIZEOF_LONG_LONG
183 Arg_Size_t = Arg_LongLongInt,
184 #else
185 Arg_Size_t = 0x0100,
186 #endif
187
188 Arg_IntPtr = 0x0200, // %n -- store # of chars written
189 Arg_ShortIntPtr = 0x0400,
190 Arg_LongIntPtr = 0x0800,
191
192 Arg_Unknown = 0x8000 // unrecognized specifier (likely error)
193 };
194
195 // returns the type of format specifier for n-th variadic argument (this is
196 // not necessarily n-th format specifier if positional specifiers are used);
197 // called by wxArgNormalizer<> specializations to get information about
198 // n-th variadic argument desired representation
199 ArgumentType GetArgumentType(unsigned n) const;
200
201 // returns the value passed to ctor, only converted to wxString, similarly
202 // to other InputAsXXX() methods
203 wxString InputAsString() const;
204
205 #if !wxUSE_UNICODE_WCHAR
206 operator const char*() const
207 { return const_cast<wxFormatString*>(this)->AsChar(); }
208 private:
209 // InputAsChar() returns the value passed to ctor, only converted
210 // to char, while AsChar() takes the string returned by InputAsChar()
211 // and does format string conversion on it as well (and similarly for
212 // ..AsWChar() below)
213 const char* InputAsChar();
214 const char* AsChar();
215 wxScopedCharBuffer m_convertedChar;
216 #endif // !wxUSE_UNICODE_WCHAR
217
218 #if wxUSE_UNICODE && !wxUSE_UTF8_LOCALE_ONLY
219 public:
220 operator const wchar_t*() const
221 { return const_cast<wxFormatString*>(this)->AsWChar(); }
222 private:
223 const wchar_t* InputAsWChar();
224 const wchar_t* AsWChar();
225 wxScopedWCharBuffer m_convertedWChar;
226 #endif // wxUSE_UNICODE && !wxUSE_UTF8_LOCALE_ONLY
227
228 private:
229 wxScopedCharBuffer m_char;
230 wxScopedWCharBuffer m_wchar;
231
232 // NB: we can use a pointer here, because wxFormatString is only used
233 // as function argument, so it has shorter life than the string
234 // passed to the ctor
235 const wxString * const m_str;
236 const wxCStrData * const m_cstr;
237
238 wxDECLARE_NO_ASSIGN_CLASS(wxFormatString);
239 };
240
241 // these two helper classes are used to find wxFormatString argument among fixed
242 // arguments passed to a vararg template
243 struct wxFormatStringArgument
244 {
245 wxFormatStringArgument(const wxFormatString *s = NULL) : m_str(s) {}
246 const wxFormatString *m_str;
247
248 // overriding this operator allows us to reuse _WX_VARARG_JOIN macro
249 wxFormatStringArgument operator,(const wxFormatStringArgument& a) const
250 {
251 wxASSERT_MSG( m_str == NULL || a.m_str == NULL,
252 "can't have two format strings in vararg function" );
253 return wxFormatStringArgument(m_str ? m_str : a.m_str);
254 }
255
256 operator const wxFormatString*() const { return m_str; }
257 };
258
259 template<typename T>
260 struct wxFormatStringArgumentFinder
261 {
262 static wxFormatStringArgument find(T)
263 {
264 // by default, arguments are not format strings, so return "not found"
265 return wxFormatStringArgument();
266 }
267 };
268
269 template<>
270 struct wxFormatStringArgumentFinder<const wxFormatString&>
271 {
272 static wxFormatStringArgument find(const wxFormatString& arg)
273 { return wxFormatStringArgument(&arg); }
274 };
275
276 template<>
277 struct wxFormatStringArgumentFinder<wxFormatString>
278 : public wxFormatStringArgumentFinder<const wxFormatString&> {};
279
280 // avoid passing big objects by value to wxFormatStringArgumentFinder::find()
281 // (and especially wx[W]CharBuffer with its auto_ptr<> style semantics!):
282 template<>
283 struct wxFormatStringArgumentFinder<wxString>
284 : public wxFormatStringArgumentFinder<const wxString&> {};
285
286 template<>
287 struct wxFormatStringArgumentFinder<wxScopedCharBuffer>
288 : public wxFormatStringArgumentFinder<const wxScopedCharBuffer&> {};
289
290 template<>
291 struct wxFormatStringArgumentFinder<wxScopedWCharBuffer>
292 : public wxFormatStringArgumentFinder<const wxScopedWCharBuffer&> {};
293
294 template<>
295 struct wxFormatStringArgumentFinder<wxCharBuffer>
296 : public wxFormatStringArgumentFinder<const wxCharBuffer&> {};
297
298 template<>
299 struct wxFormatStringArgumentFinder<wxWCharBuffer>
300 : public wxFormatStringArgumentFinder<const wxWCharBuffer&> {};
301
302
303 // ----------------------------------------------------------------------------
304 // wxArgNormalizer*<T> converters
305 // ----------------------------------------------------------------------------
306
307 #if wxDEBUG_LEVEL
308 // Check that the format specifier for index-th argument in 'fmt' has
309 // the correct type (one of wxFormatString::Arg_XXX or-combination in
310 // 'expected_mask').
311 #define wxASSERT_ARG_TYPE(fmt, index, expected_mask) \
312 wxSTATEMENT_MACRO_BEGIN \
313 if ( !fmt ) \
314 break; \
315 const int argtype = fmt->GetArgumentType(index); \
316 wxASSERT_MSG( (argtype & (expected_mask)) == argtype, \
317 "format specifier doesn't match argument type" ); \
318 wxSTATEMENT_MACRO_END
319 #else
320 // Just define it to suppress "unused parameter" warnings for the
321 // parameters which we don't use otherwise
322 #define wxASSERT_ARG_TYPE(fmt, index, expected_mask) \
323 wxUnusedVar(fmt); \
324 wxUnusedVar(index)
325 #endif // wxDEBUG_LEVEL/!wxDEBUG_LEVEL
326
327
328 #if defined(HAVE_TYPE_TRAITS) || defined(HAVE_TR1_TYPE_TRAITS)
329
330 // Note: this type is misnamed, so that the error message is easier to
331 // understand (no error happens for enums, because the IsEnum=true case is
332 // specialized).
333 template<bool IsEnum>
334 struct wxFormatStringSpecifierNonPodType {};
335
336 template<>
337 struct wxFormatStringSpecifierNonPodType<true>
338 {
339 enum { value = wxFormatString::Arg_Int };
340 };
341
342 template<typename T>
343 struct wxFormatStringSpecifier
344 {
345 #ifdef HAVE_TYPE_TRAITS
346 typedef std::is_enum<T> is_enum;
347 #elif defined HAVE_TR1_TYPE_TRAITS
348 typedef std::tr1::is_enum<T> is_enum;
349 #endif
350 enum { value = wxFormatStringSpecifierNonPodType<is_enum::value>::value };
351 };
352
353 #else // !HAVE_(TR1_)TYPE_TRAITS
354
355 template<typename T>
356 struct wxFormatStringSpecifier
357 {
358 // We can't detect enums without is_enum, so the only thing we can
359 // do is to accept unknown types. However, the only acceptable unknown
360 // types still are enums, which are promoted to ints, so return Arg_Int
361 // here. This will at least catch passing of non-POD types through ... at
362 // runtime.
363 //
364 // Furthermore, if the compiler doesn't have partial template
365 // specialization, we didn't cover pointers either.
366 #ifdef HAVE_PARTIAL_SPECIALIZATION
367 enum { value = wxFormatString::Arg_Int };
368 #else
369 enum { value = wxFormatString::Arg_Int | wxFormatString::Arg_Pointer };
370 #endif
371 };
372
373 #endif // HAVE_TR1_TYPE_TRAITS/!HAVE_TR1_TYPE_TRAITS
374
375
376 #ifdef HAVE_PARTIAL_SPECIALIZATION
377 template<typename T>
378 struct wxFormatStringSpecifier<T*>
379 {
380 enum { value = wxFormatString::Arg_Pointer };
381 };
382
383 template<typename T>
384 struct wxFormatStringSpecifier<const T*>
385 {
386 enum { value = wxFormatString::Arg_Pointer };
387 };
388 #endif // !HAVE_PARTIAL_SPECIALIZATION
389
390
391 #define wxFORMAT_STRING_SPECIFIER(T, arg) \
392 template<> struct wxFormatStringSpecifier<T> \
393 { \
394 enum { value = arg }; \
395 };
396
397 wxFORMAT_STRING_SPECIFIER(bool, wxFormatString::Arg_Int)
398 wxFORMAT_STRING_SPECIFIER(int, wxFormatString::Arg_Int)
399 wxFORMAT_STRING_SPECIFIER(unsigned int, wxFormatString::Arg_Int)
400 wxFORMAT_STRING_SPECIFIER(short int, wxFormatString::Arg_Int)
401 wxFORMAT_STRING_SPECIFIER(short unsigned int, wxFormatString::Arg_Int)
402 wxFORMAT_STRING_SPECIFIER(long int, wxFormatString::Arg_LongInt)
403 wxFORMAT_STRING_SPECIFIER(long unsigned int, wxFormatString::Arg_LongInt)
404 #ifdef wxLongLong_t
405 wxFORMAT_STRING_SPECIFIER(wxLongLong_t, wxFormatString::Arg_LongLongInt)
406 wxFORMAT_STRING_SPECIFIER(wxULongLong_t, wxFormatString::Arg_LongLongInt)
407 #endif
408 wxFORMAT_STRING_SPECIFIER(float, wxFormatString::Arg_Double)
409 wxFORMAT_STRING_SPECIFIER(double, wxFormatString::Arg_Double)
410 wxFORMAT_STRING_SPECIFIER(long double, wxFormatString::Arg_LongDouble)
411
412 #if wxWCHAR_T_IS_REAL_TYPE
413 wxFORMAT_STRING_SPECIFIER(wchar_t, wxFormatString::Arg_Char | wxFormatString::Arg_Int)
414 #endif
415
416 #if !wxUSE_UNICODE
417 wxFORMAT_STRING_SPECIFIER(char, wxFormatString::Arg_Char | wxFormatString::Arg_Int)
418 wxFORMAT_STRING_SPECIFIER(signed char, wxFormatString::Arg_Char | wxFormatString::Arg_Int)
419 wxFORMAT_STRING_SPECIFIER(unsigned char, wxFormatString::Arg_Char | wxFormatString::Arg_Int)
420 #endif
421
422 wxFORMAT_STRING_SPECIFIER(char*, wxFormatString::Arg_String)
423 wxFORMAT_STRING_SPECIFIER(unsigned char*, wxFormatString::Arg_String)
424 wxFORMAT_STRING_SPECIFIER(signed char*, wxFormatString::Arg_String)
425 wxFORMAT_STRING_SPECIFIER(const char*, wxFormatString::Arg_String)
426 wxFORMAT_STRING_SPECIFIER(const unsigned char*, wxFormatString::Arg_String)
427 wxFORMAT_STRING_SPECIFIER(const signed char*, wxFormatString::Arg_String)
428 wxFORMAT_STRING_SPECIFIER(wchar_t*, wxFormatString::Arg_String)
429 wxFORMAT_STRING_SPECIFIER(const wchar_t*, wxFormatString::Arg_String)
430
431 wxFORMAT_STRING_SPECIFIER(int*, wxFormatString::Arg_IntPtr | wxFormatString::Arg_Pointer)
432 wxFORMAT_STRING_SPECIFIER(short int*, wxFormatString::Arg_ShortIntPtr | wxFormatString::Arg_Pointer)
433 wxFORMAT_STRING_SPECIFIER(long int*, wxFormatString::Arg_LongIntPtr | wxFormatString::Arg_Pointer)
434
435 #undef wxFORMAT_STRING_SPECIFIER
436
437
438 // Converts an argument passed to wxPrint etc. into standard form expected,
439 // by wxXXX functions, e.g. all strings (wxString, char*, wchar_t*) are
440 // converted into wchar_t* or char* depending on the build.
441 template<typename T>
442 struct wxArgNormalizer
443 {
444 // Ctor. 'value' is the value passed as variadic argument, 'fmt' is pointer
445 // to printf-like format string or NULL if the variadic function doesn't
446 // use format string and 'index' is index of 'value' in variadic arguments
447 // list (starting at 1)
448 wxArgNormalizer(T value,
449 const wxFormatString *fmt, unsigned index)
450 : m_value(value)
451 {
452 wxASSERT_ARG_TYPE( fmt, index, wxFormatStringSpecifier<T>::value );
453 }
454
455 // Returns the value in a form that can be safely passed to real vararg
456 // functions. In case of strings, this is char* in ANSI build and wchar_t*
457 // in Unicode build.
458 T get() const { return m_value; }
459
460 T m_value;
461 };
462
463 // normalizer for passing arguments to functions working with wchar_t* (and
464 // until ANSI build is removed, char* in ANSI build as well - FIXME-UTF8)
465 // string representation
466 #if !wxUSE_UTF8_LOCALE_ONLY
467 template<typename T>
468 struct wxArgNormalizerWchar : public wxArgNormalizer<T>
469 {
470 wxArgNormalizerWchar(T value,
471 const wxFormatString *fmt, unsigned index)
472 : wxArgNormalizer<T>(value, fmt, index) {}
473 };
474 #endif // !wxUSE_UTF8_LOCALE_ONLY
475
476 // normalizer for passing arguments to functions working with UTF-8 encoded
477 // char* strings
478 #if wxUSE_UNICODE_UTF8
479 template<typename T>
480 struct wxArgNormalizerUtf8 : public wxArgNormalizer<T>
481 {
482 wxArgNormalizerUtf8(T value,
483 const wxFormatString *fmt, unsigned index)
484 : wxArgNormalizer<T>(value, fmt, index) {}
485 };
486
487 #define wxArgNormalizerNative wxArgNormalizerUtf8
488 #else // wxUSE_UNICODE_WCHAR
489 #define wxArgNormalizerNative wxArgNormalizerWchar
490 #endif // wxUSE_UNICODE_UTF8 // wxUSE_UNICODE_UTF8
491
492
493
494 // special cases for converting strings:
495
496
497 // base class for wxArgNormalizer<T> specializations that need to do conversion;
498 // CharType is either wxStringCharType or wchar_t in UTF-8 build when wrapping
499 // widechar CRT function
500 template<typename CharType>
501 struct wxArgNormalizerWithBuffer
502 {
503 typedef wxScopedCharTypeBuffer<CharType> CharBuffer;
504
505 wxArgNormalizerWithBuffer() {}
506 wxArgNormalizerWithBuffer(const CharBuffer& buf,
507 const wxFormatString *fmt,
508 unsigned index)
509 : m_value(buf)
510 {
511 wxASSERT_ARG_TYPE( fmt, index, wxFormatString::Arg_String );
512 }
513
514 const CharType *get() const { return m_value; }
515
516 CharBuffer m_value;
517 };
518
519 // string objects:
520 template<>
521 struct WXDLLIMPEXP_BASE wxArgNormalizerNative<const wxString&>
522 {
523 wxArgNormalizerNative(const wxString& s,
524 const wxFormatString *fmt,
525 unsigned index)
526 : m_value(s)
527 {
528 wxASSERT_ARG_TYPE( fmt, index, wxFormatString::Arg_String );
529 }
530
531 const wxStringCharType *get() const;
532
533 const wxString& m_value;
534 };
535
536 // c_str() values:
537 template<>
538 struct WXDLLIMPEXP_BASE wxArgNormalizerNative<const wxCStrData&>
539 {
540 wxArgNormalizerNative(const wxCStrData& value,
541 const wxFormatString *fmt,
542 unsigned index)
543 : m_value(value)
544 {
545 wxASSERT_ARG_TYPE( fmt, index, wxFormatString::Arg_String );
546 }
547
548 const wxStringCharType *get() const;
549
550 const wxCStrData& m_value;
551 };
552
553 // wxString/wxCStrData conversion to wchar_t* value
554 #if wxUSE_UNICODE_UTF8 && !wxUSE_UTF8_LOCALE_ONLY
555 template<>
556 struct WXDLLIMPEXP_BASE wxArgNormalizerWchar<const wxString&>
557 : public wxArgNormalizerWithBuffer<wchar_t>
558 {
559 wxArgNormalizerWchar(const wxString& s,
560 const wxFormatString *fmt, unsigned index);
561 };
562
563 template<>
564 struct WXDLLIMPEXP_BASE wxArgNormalizerWchar<const wxCStrData&>
565 : public wxArgNormalizerWithBuffer<wchar_t>
566 {
567 wxArgNormalizerWchar(const wxCStrData& s,
568 const wxFormatString *fmt, unsigned index);
569 };
570 #endif // wxUSE_UNICODE_UTF8 && !wxUSE_UTF8_LOCALE_ONLY
571
572
573 // C string pointers of the wrong type (wchar_t* for ANSI or UTF8 build,
574 // char* for wchar_t Unicode build or UTF8):
575 #if wxUSE_UNICODE_WCHAR
576
577 template<>
578 struct wxArgNormalizerWchar<const char*>
579 : public wxArgNormalizerWithBuffer<wchar_t>
580 {
581 wxArgNormalizerWchar(const char* s,
582 const wxFormatString *fmt, unsigned index)
583 : wxArgNormalizerWithBuffer<wchar_t>(wxConvLibc.cMB2WC(s), fmt, index) {}
584 };
585
586 #elif wxUSE_UNICODE_UTF8
587
588 template<>
589 struct wxArgNormalizerUtf8<const wchar_t*>
590 : public wxArgNormalizerWithBuffer<char>
591 {
592 wxArgNormalizerUtf8(const wchar_t* s,
593 const wxFormatString *fmt, unsigned index)
594 : wxArgNormalizerWithBuffer<char>(wxConvUTF8.cWC2MB(s), fmt, index) {}
595 };
596
597 template<>
598 struct wxArgNormalizerUtf8<const char*>
599 : public wxArgNormalizerWithBuffer<char>
600 {
601 wxArgNormalizerUtf8(const char* s,
602 const wxFormatString *fmt,
603 unsigned index)
604 {
605 wxASSERT_ARG_TYPE( fmt, index, wxFormatString::Arg_String );
606
607 if ( wxLocaleIsUtf8 )
608 {
609 m_value = wxScopedCharBuffer::CreateNonOwned(s);
610 }
611 else
612 {
613 // convert to widechar string first:
614 wxScopedWCharBuffer buf(wxConvLibc.cMB2WC(s));
615
616 // then to UTF-8:
617 if ( buf )
618 m_value = wxConvUTF8.cWC2MB(buf);
619 }
620 }
621 };
622
623 // UTF-8 build needs conversion to wchar_t* too:
624 #if !wxUSE_UTF8_LOCALE_ONLY
625 template<>
626 struct wxArgNormalizerWchar<const char*>
627 : public wxArgNormalizerWithBuffer<wchar_t>
628 {
629 wxArgNormalizerWchar(const char* s,
630 const wxFormatString *fmt, unsigned index)
631 : wxArgNormalizerWithBuffer<wchar_t>(wxConvLibc.cMB2WC(s), fmt, index) {}
632 };
633 #endif // !wxUSE_UTF8_LOCALE_ONLY
634
635 #else // ANSI - FIXME-UTF8
636
637 template<>
638 struct wxArgNormalizerWchar<const wchar_t*>
639 : public wxArgNormalizerWithBuffer<char>
640 {
641 wxArgNormalizerWchar(const wchar_t* s,
642 const wxFormatString *fmt, unsigned index)
643 : wxArgNormalizerWithBuffer<char>(wxConvLibc.cWC2MB(s), fmt, index) {}
644 };
645
646 #endif // wxUSE_UNICODE_WCHAR/wxUSE_UNICODE_UTF8/ANSI
647
648
649 // this macro is used to implement specialization that are exactly same as
650 // some other specialization, i.e. to "forward" the implementation (e.g. for
651 // T=wxString and T=const wxString&). Note that the ctor takes BaseT argument,
652 // not T!
653 #if wxUSE_UNICODE_UTF8
654 #if wxUSE_UTF8_LOCALE_ONLY
655 #define WX_ARG_NORMALIZER_FORWARD(T, BaseT) \
656 _WX_ARG_NORMALIZER_FORWARD_IMPL(wxArgNormalizerUtf8, T, BaseT)
657 #else // possibly non-UTF8 locales
658 #define WX_ARG_NORMALIZER_FORWARD(T, BaseT) \
659 _WX_ARG_NORMALIZER_FORWARD_IMPL(wxArgNormalizerWchar, T, BaseT); \
660 _WX_ARG_NORMALIZER_FORWARD_IMPL(wxArgNormalizerUtf8, T, BaseT)
661 #endif
662 #else // wxUSE_UNICODE_WCHAR
663 #define WX_ARG_NORMALIZER_FORWARD(T, BaseT) \
664 _WX_ARG_NORMALIZER_FORWARD_IMPL(wxArgNormalizerWchar, T, BaseT)
665 #endif // wxUSE_UNICODE_UTF8/wxUSE_UNICODE_WCHAR
666
667 #define _WX_ARG_NORMALIZER_FORWARD_IMPL(Normalizer, T, BaseT) \
668 template<> \
669 struct Normalizer<T> : public Normalizer<BaseT> \
670 { \
671 Normalizer(BaseT value, \
672 const wxFormatString *fmt, unsigned index) \
673 : Normalizer<BaseT>(value, fmt, index) {} \
674 }
675
676 // non-reference versions of specializations for string objects
677 WX_ARG_NORMALIZER_FORWARD(wxString, const wxString&);
678 WX_ARG_NORMALIZER_FORWARD(wxCStrData, const wxCStrData&);
679
680 // versions for passing non-const pointers:
681 WX_ARG_NORMALIZER_FORWARD(char*, const char*);
682 WX_ARG_NORMALIZER_FORWARD(wchar_t*, const wchar_t*);
683
684 // versions for passing wx[W]CharBuffer:
685 WX_ARG_NORMALIZER_FORWARD(wxScopedCharBuffer, const char*);
686 WX_ARG_NORMALIZER_FORWARD(const wxScopedCharBuffer&, const char*);
687 WX_ARG_NORMALIZER_FORWARD(wxScopedWCharBuffer, const wchar_t*);
688 WX_ARG_NORMALIZER_FORWARD(const wxScopedWCharBuffer&, const wchar_t*);
689 WX_ARG_NORMALIZER_FORWARD(wxCharBuffer, const char*);
690 WX_ARG_NORMALIZER_FORWARD(const wxCharBuffer&, const char*);
691 WX_ARG_NORMALIZER_FORWARD(wxWCharBuffer, const wchar_t*);
692 WX_ARG_NORMALIZER_FORWARD(const wxWCharBuffer&, const wchar_t*);
693
694 // versions for std::[w]string:
695 #if wxUSE_STD_STRING
696
697 #include "wx/stringimpl.h"
698
699 #if !wxUSE_UTF8_LOCALE_ONLY
700 template<>
701 struct wxArgNormalizerWchar<const std::string&>
702 : public wxArgNormalizerWchar<const char*>
703 {
704 wxArgNormalizerWchar(const std::string& s,
705 const wxFormatString *fmt, unsigned index)
706 : wxArgNormalizerWchar<const char*>(s.c_str(), fmt, index) {}
707 };
708
709 template<>
710 struct wxArgNormalizerWchar<const wxStdWideString&>
711 : public wxArgNormalizerWchar<const wchar_t*>
712 {
713 wxArgNormalizerWchar(const wxStdWideString& s,
714 const wxFormatString *fmt, unsigned index)
715 : wxArgNormalizerWchar<const wchar_t*>(s.c_str(), fmt, index) {}
716 };
717 #endif // !wxUSE_UTF8_LOCALE_ONLY
718
719 #if wxUSE_UNICODE_UTF8
720 template<>
721 struct wxArgNormalizerUtf8<const std::string&>
722 : public wxArgNormalizerUtf8<const char*>
723 {
724 wxArgNormalizerUtf8(const std::string& s,
725 const wxFormatString *fmt, unsigned index)
726 : wxArgNormalizerUtf8<const char*>(s.c_str(), fmt, index) {}
727 };
728
729 template<>
730 struct wxArgNormalizerUtf8<const wxStdWideString&>
731 : public wxArgNormalizerUtf8<const wchar_t*>
732 {
733 wxArgNormalizerUtf8(const wxStdWideString& s,
734 const wxFormatString *fmt, unsigned index)
735 : wxArgNormalizerUtf8<const wchar_t*>(s.c_str(), fmt, index) {}
736 };
737 #endif // wxUSE_UNICODE_UTF8
738
739 WX_ARG_NORMALIZER_FORWARD(std::string, const std::string&);
740 WX_ARG_NORMALIZER_FORWARD(wxStdWideString, const wxStdWideString&);
741
742 #endif // wxUSE_STD_STRING
743
744
745 // versions for wxUniChar, wxUniCharRef:
746 // (this is same for UTF-8 and Wchar builds, we just convert to wchar_t)
747 template<>
748 struct wxArgNormalizer<const wxUniChar&> : public wxArgNormalizer<wchar_t>
749 {
750 wxArgNormalizer(const wxUniChar& s,
751 const wxFormatString *fmt, unsigned index)
752 : wxArgNormalizer<wchar_t>(s.GetValue(), fmt, index) {}
753 };
754
755 // for wchar_t, default handler does the right thing
756
757 // char has to be treated differently in Unicode builds: a char argument may
758 // be used either for a character value (which should be converted into
759 // wxUniChar) or as an integer value (which should be left as-is). We take
760 // advantage of the fact that both char and wchar_t are converted into int
761 // in variadic arguments here.
762 #if wxUSE_UNICODE
763 template<typename T>
764 struct wxArgNormalizerNarrowChar
765 {
766 wxArgNormalizerNarrowChar(T value,
767 const wxFormatString *fmt, unsigned index)
768 {
769 wxASSERT_ARG_TYPE( fmt, index,
770 wxFormatString::Arg_Char | wxFormatString::Arg_Int );
771
772 // FIXME-UTF8: which one is better default in absence of fmt string
773 // (i.e. when used like e.g. Foo("foo", "bar", 'c', NULL)?
774 if ( !fmt || fmt->GetArgumentType(index) == wxFormatString::Arg_Char )
775 m_value = wx_truncate_cast(T, wxUniChar(value).GetValue());
776 else
777 m_value = value;
778 }
779
780 int get() const { return m_value; }
781
782 T m_value;
783 };
784
785 template<>
786 struct wxArgNormalizer<char> : public wxArgNormalizerNarrowChar<char>
787 {
788 wxArgNormalizer(char value,
789 const wxFormatString *fmt, unsigned index)
790 : wxArgNormalizerNarrowChar<char>(value, fmt, index) {}
791 };
792
793 template<>
794 struct wxArgNormalizer<unsigned char>
795 : public wxArgNormalizerNarrowChar<unsigned char>
796 {
797 wxArgNormalizer(unsigned char value,
798 const wxFormatString *fmt, unsigned index)
799 : wxArgNormalizerNarrowChar<unsigned char>(value, fmt, index) {}
800 };
801
802 template<>
803 struct wxArgNormalizer<signed char>
804 : public wxArgNormalizerNarrowChar<signed char>
805 {
806 wxArgNormalizer(signed char value,
807 const wxFormatString *fmt, unsigned index)
808 : wxArgNormalizerNarrowChar<signed char>(value, fmt, index) {}
809 };
810
811 #endif // wxUSE_UNICODE
812
813 // convert references:
814 WX_ARG_NORMALIZER_FORWARD(wxUniChar, const wxUniChar&);
815 WX_ARG_NORMALIZER_FORWARD(const wxUniCharRef&, const wxUniChar&);
816 WX_ARG_NORMALIZER_FORWARD(wxUniCharRef, const wxUniChar&);
817 WX_ARG_NORMALIZER_FORWARD(const wchar_t&, wchar_t);
818
819 WX_ARG_NORMALIZER_FORWARD(const char&, char);
820 WX_ARG_NORMALIZER_FORWARD(const unsigned char&, unsigned char);
821 WX_ARG_NORMALIZER_FORWARD(const signed char&, signed char);
822
823
824 #undef WX_ARG_NORMALIZER_FORWARD
825 #undef _WX_ARG_NORMALIZER_FORWARD_IMPL
826
827 // NB: Don't #undef wxASSERT_ARG_TYPE here as it's also used in wx/longlong.h.
828
829 // ----------------------------------------------------------------------------
830 // WX_VA_ARG_STRING
831 // ----------------------------------------------------------------------------
832
833 // Replacement for va_arg() for use with strings in functions that accept
834 // strings normalized by wxArgNormalizer<T>:
835
836 struct WXDLLIMPEXP_BASE wxArgNormalizedString
837 {
838 wxArgNormalizedString(const void* ptr) : m_ptr(ptr) {}
839
840 // returns true if non-NULL string was passed in
841 bool IsValid() const { return m_ptr != NULL; }
842 operator bool() const { return IsValid(); }
843
844 // extracts the string, returns empty string if NULL was passed in
845 wxString GetString() const;
846 operator wxString() const;
847
848 private:
849 const void *m_ptr;
850 };
851
852 #define WX_VA_ARG_STRING(ap) wxArgNormalizedString(va_arg(ap, const void*))
853
854 // ----------------------------------------------------------------------------
855 // implementation of the WX_DEFINE_VARARG_* macros
856 // ----------------------------------------------------------------------------
857
858 // NB: The vararg emulation code is limited to 30 variadic and 4 fixed
859 // arguments at the moment.
860 // If you need more variadic arguments, you need to
861 // 1) increase the value of _WX_VARARG_MAX_ARGS
862 // 2) add _WX_VARARG_JOIN_* and _WX_VARARG_ITER_* up to the new
863 // _WX_VARARG_MAX_ARGS value to the lists below
864 // If you need more fixed arguments, you need to
865 // 1) increase the value of _WX_VARARG_MAX_FIXED_ARGS
866 // 2) add _WX_VARARG_FIXED_EXPAND_* and _WX_VARARG_FIXED_UNUSED_EXPAND_*
867 // macros below
868 #define _WX_VARARG_MAX_ARGS 30
869 #define _WX_VARARG_MAX_FIXED_ARGS 4
870
871 #define _WX_VARARG_JOIN_1(m) m(1)
872 #define _WX_VARARG_JOIN_2(m) _WX_VARARG_JOIN_1(m), m(2)
873 #define _WX_VARARG_JOIN_3(m) _WX_VARARG_JOIN_2(m), m(3)
874 #define _WX_VARARG_JOIN_4(m) _WX_VARARG_JOIN_3(m), m(4)
875 #define _WX_VARARG_JOIN_5(m) _WX_VARARG_JOIN_4(m), m(5)
876 #define _WX_VARARG_JOIN_6(m) _WX_VARARG_JOIN_5(m), m(6)
877 #define _WX_VARARG_JOIN_7(m) _WX_VARARG_JOIN_6(m), m(7)
878 #define _WX_VARARG_JOIN_8(m) _WX_VARARG_JOIN_7(m), m(8)
879 #define _WX_VARARG_JOIN_9(m) _WX_VARARG_JOIN_8(m), m(9)
880 #define _WX_VARARG_JOIN_10(m) _WX_VARARG_JOIN_9(m), m(10)
881 #define _WX_VARARG_JOIN_11(m) _WX_VARARG_JOIN_10(m), m(11)
882 #define _WX_VARARG_JOIN_12(m) _WX_VARARG_JOIN_11(m), m(12)
883 #define _WX_VARARG_JOIN_13(m) _WX_VARARG_JOIN_12(m), m(13)
884 #define _WX_VARARG_JOIN_14(m) _WX_VARARG_JOIN_13(m), m(14)
885 #define _WX_VARARG_JOIN_15(m) _WX_VARARG_JOIN_14(m), m(15)
886 #define _WX_VARARG_JOIN_16(m) _WX_VARARG_JOIN_15(m), m(16)
887 #define _WX_VARARG_JOIN_17(m) _WX_VARARG_JOIN_16(m), m(17)
888 #define _WX_VARARG_JOIN_18(m) _WX_VARARG_JOIN_17(m), m(18)
889 #define _WX_VARARG_JOIN_19(m) _WX_VARARG_JOIN_18(m), m(19)
890 #define _WX_VARARG_JOIN_20(m) _WX_VARARG_JOIN_19(m), m(20)
891 #define _WX_VARARG_JOIN_21(m) _WX_VARARG_JOIN_20(m), m(21)
892 #define _WX_VARARG_JOIN_22(m) _WX_VARARG_JOIN_21(m), m(22)
893 #define _WX_VARARG_JOIN_23(m) _WX_VARARG_JOIN_22(m), m(23)
894 #define _WX_VARARG_JOIN_24(m) _WX_VARARG_JOIN_23(m), m(24)
895 #define _WX_VARARG_JOIN_25(m) _WX_VARARG_JOIN_24(m), m(25)
896 #define _WX_VARARG_JOIN_26(m) _WX_VARARG_JOIN_25(m), m(26)
897 #define _WX_VARARG_JOIN_27(m) _WX_VARARG_JOIN_26(m), m(27)
898 #define _WX_VARARG_JOIN_28(m) _WX_VARARG_JOIN_27(m), m(28)
899 #define _WX_VARARG_JOIN_29(m) _WX_VARARG_JOIN_28(m), m(29)
900 #define _WX_VARARG_JOIN_30(m) _WX_VARARG_JOIN_29(m), m(30)
901
902 #define _WX_VARARG_ITER_1(m,a,b,c,d,e,f) m(1,a,b,c,d,e,f)
903 #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)
904 #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)
905 #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)
906 #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)
907 #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)
908 #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)
909 #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)
910 #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)
911 #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)
912 #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)
913 #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)
914 #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)
915 #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)
916 #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)
917 #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)
918 #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)
919 #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)
920 #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)
921 #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)
922 #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)
923 #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)
924 #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)
925 #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)
926 #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)
927 #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)
928 #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)
929 #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)
930 #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)
931 #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)
932
933
934 #define _WX_VARARG_FIXED_EXPAND_1(t1) \
935 t1 f1
936 #define _WX_VARARG_FIXED_EXPAND_2(t1,t2) \
937 t1 f1, t2 f2
938 #define _WX_VARARG_FIXED_EXPAND_3(t1,t2,t3) \
939 t1 f1, t2 f2, t3 f3
940 #define _WX_VARARG_FIXED_EXPAND_4(t1,t2,t3,t4) \
941 t1 f1, t2 f2, t3 f3, t4 f4
942
943 #define _WX_VARARG_FIXED_UNUSED_EXPAND_1(t1) \
944 t1 WXUNUSED(f1)
945 #define _WX_VARARG_FIXED_UNUSED_EXPAND_2(t1,t2) \
946 t1 WXUNUSED(f1), t2 WXUNUSED(f2)
947 #define _WX_VARARG_FIXED_UNUSED_EXPAND_3(t1,t2,t3) \
948 t1 WXUNUSED(f1), t2 WXUNUSED(f2), t3 WXUNUSED(f3)
949 #define _WX_VARARG_FIXED_UNUSED_EXPAND_4(t1,t2,t3,t4) \
950 t1 WXUNUSED(f1), t2 WXUNUSED(f2), t3 WXUNUSED(f3), t4 WXUNUSED(f4)
951
952 #define _WX_VARARG_FIXED_TYPEDEFS_1(t1) \
953 typedef t1 TF1
954 #define _WX_VARARG_FIXED_TYPEDEFS_2(t1,t2) \
955 _WX_VARARG_FIXED_TYPEDEFS_1(t1); typedef t2 TF2
956 #define _WX_VARARG_FIXED_TYPEDEFS_3(t1,t2,t3) \
957 _WX_VARARG_FIXED_TYPEDEFS_2(t1,t2); typedef t3 TF3
958 #define _WX_VARARG_FIXED_TYPEDEFS_4(t1,t2,t3,t4) \
959 _WX_VARARG_FIXED_TYPEDEFS_3(t1,t2,t3); typedef t4 TF4
960
961 // This macro expands N-items tuple of fixed arguments types into part of
962 // function's declaration. For example,
963 // "_WX_VARARG_FIXED_EXPAND(3, (int, char*, int))" expands into
964 // "int f1, char* f2, int f3".
965 #define _WX_VARARG_FIXED_EXPAND(N, args) \
966 _WX_VARARG_FIXED_EXPAND_IMPL(N, args)
967 #define _WX_VARARG_FIXED_EXPAND_IMPL(N, args) \
968 _WX_VARARG_FIXED_EXPAND_##N args
969
970 // Ditto for unused arguments
971 #define _WX_VARARG_FIXED_UNUSED_EXPAND(N, args) \
972 _WX_VARARG_FIXED_UNUSED_EXPAND_IMPL(N, args)
973 #define _WX_VARARG_FIXED_UNUSED_EXPAND_IMPL(N, args) \
974 _WX_VARARG_FIXED_UNUSED_EXPAND_##N args
975
976 // Declarates typedefs for fixed arguments types; i-th fixed argument types
977 // will have TFi typedef.
978 #define _WX_VARARG_FIXED_TYPEDEFS(N, args) \
979 _WX_VARARG_FIXED_TYPEDEFS_IMPL(N, args)
980 #define _WX_VARARG_FIXED_TYPEDEFS_IMPL(N, args) \
981 _WX_VARARG_FIXED_TYPEDEFS_##N args
982
983
984 // This macro calls another macro 'm' passed as second argument 'N' times,
985 // with its only argument set to 1..N, and concatenates the results using
986 // comma as separator.
987 //
988 // An example:
989 // #define foo(i) x##i
990 // // this expands to "x1,x2,x3,x4"
991 // _WX_VARARG_JOIN(4, foo)
992 //
993 //
994 // N must not be greater than _WX_VARARG_MAX_ARGS (=30).
995 #define _WX_VARARG_JOIN(N, m) _WX_VARARG_JOIN_IMPL(N, m)
996 #define _WX_VARARG_JOIN_IMPL(N, m) _WX_VARARG_JOIN_##N(m)
997
998
999 // This macro calls another macro 'm' passed as second argument 'N' times, with
1000 // its first argument set to 1..N and the remaining arguments set to 'a', 'b',
1001 // 'c', 'd', 'e' and 'f'. The results are separated with whitespace in the
1002 // expansion.
1003 //
1004 // An example:
1005 // // this macro expands to:
1006 // // foo(1,a,b,c,d,e,f)
1007 // // foo(2,a,b,c,d,e,f)
1008 // // foo(3,a,b,c,d,e,f)
1009 // _WX_VARARG_ITER(3, foo, a, b, c, d, e, f)
1010 //
1011 // N must not be greater than _WX_VARARG_MAX_ARGS (=30).
1012 #define _WX_VARARG_ITER(N,m,a,b,c,d,e,f) \
1013 _WX_VARARG_ITER_IMPL(N,m,a,b,c,d,e,f)
1014 #define _WX_VARARG_ITER_IMPL(N,m,a,b,c,d,e,f) \
1015 _WX_VARARG_ITER_##N(m,a,b,c,d,e,f)
1016
1017 // Generates code snippet for i-th "variadic" argument in vararg function's
1018 // prototype:
1019 #define _WX_VARARG_ARG(i) T##i a##i
1020
1021 // Like _WX_VARARG_ARG_UNUSED, but outputs argument's type with WXUNUSED:
1022 #define _WX_VARARG_ARG_UNUSED(i) T##i WXUNUSED(a##i)
1023
1024 // Generates code snippet for i-th type in vararg function's template<...>:
1025 #define _WX_VARARG_TEMPL(i) typename T##i
1026
1027 // Generates code snippet for passing i-th argument of vararg function
1028 // wrapper to its implementation, normalizing it in the process:
1029 #define _WX_VARARG_PASS_WCHAR(i) \
1030 wxArgNormalizerWchar<T##i>(a##i, fmt, i).get()
1031 #define _WX_VARARG_PASS_UTF8(i) \
1032 wxArgNormalizerUtf8<T##i>(a##i, fmt, i).get()
1033
1034
1035 // And the same for fixed arguments, _not_ normalizing it:
1036 #define _WX_VARARG_PASS_FIXED(i) f##i
1037
1038 #define _WX_VARARG_FIND_FMT(i) \
1039 (wxFormatStringArgumentFinder<TF##i>::find(f##i))
1040
1041 #define _WX_VARARG_FORMAT_STRING(numfixed, fixed) \
1042 _WX_VARARG_FIXED_TYPEDEFS(numfixed, fixed); \
1043 const wxFormatString *fmt = \
1044 (_WX_VARARG_JOIN(numfixed, _WX_VARARG_FIND_FMT))
1045
1046 #if wxUSE_UNICODE_UTF8
1047 #define _WX_VARARG_DO_CALL_UTF8(return_kw, impl, implUtf8, N, numfixed) \
1048 return_kw implUtf8(_WX_VARARG_JOIN(numfixed, _WX_VARARG_PASS_FIXED), \
1049 _WX_VARARG_JOIN(N, _WX_VARARG_PASS_UTF8))
1050 #define _WX_VARARG_DO_CALL0_UTF8(return_kw, impl, implUtf8, numfixed) \
1051 return_kw implUtf8(_WX_VARARG_JOIN(numfixed, _WX_VARARG_PASS_FIXED))
1052 #endif // wxUSE_UNICODE_UTF8
1053
1054 #define _WX_VARARG_DO_CALL_WCHAR(return_kw, impl, implUtf8, N, numfixed) \
1055 return_kw impl(_WX_VARARG_JOIN(numfixed, _WX_VARARG_PASS_FIXED), \
1056 _WX_VARARG_JOIN(N, _WX_VARARG_PASS_WCHAR))
1057 #define _WX_VARARG_DO_CALL0_WCHAR(return_kw, impl, implUtf8, numfixed) \
1058 return_kw impl(_WX_VARARG_JOIN(numfixed, _WX_VARARG_PASS_FIXED))
1059
1060 #if wxUSE_UNICODE_UTF8
1061 #if wxUSE_UTF8_LOCALE_ONLY
1062 #define _WX_VARARG_DO_CALL _WX_VARARG_DO_CALL_UTF8
1063 #define _WX_VARARG_DO_CALL0 _WX_VARARG_DO_CALL0_UTF8
1064 #else // possibly non-UTF8 locales
1065 #define _WX_VARARG_DO_CALL(return_kw, impl, implUtf8, N, numfixed) \
1066 if ( wxLocaleIsUtf8 ) \
1067 _WX_VARARG_DO_CALL_UTF8(return_kw, impl, implUtf8, N, numfixed);\
1068 else \
1069 _WX_VARARG_DO_CALL_WCHAR(return_kw, impl, implUtf8, N, numfixed)
1070
1071 #define _WX_VARARG_DO_CALL0(return_kw, impl, implUtf8, numfixed) \
1072 if ( wxLocaleIsUtf8 ) \
1073 _WX_VARARG_DO_CALL0_UTF8(return_kw, impl, implUtf8, numfixed); \
1074 else \
1075 _WX_VARARG_DO_CALL0_WCHAR(return_kw, impl, implUtf8, numfixed)
1076 #endif // wxUSE_UTF8_LOCALE_ONLY or not
1077 #else // wxUSE_UNICODE_WCHAR or ANSI
1078 #define _WX_VARARG_DO_CALL _WX_VARARG_DO_CALL_WCHAR
1079 #define _WX_VARARG_DO_CALL0 _WX_VARARG_DO_CALL0_WCHAR
1080 #endif // wxUSE_UNICODE_UTF8 / wxUSE_UNICODE_WCHAR
1081
1082
1083 // Macro to be used with _WX_VARARG_ITER in the implementation of
1084 // WX_DEFINE_VARARG_FUNC (see its documentation for the meaning of arguments)
1085 #define _WX_VARARG_DEFINE_FUNC(N, rettype, name, \
1086 impl, implUtf8, numfixed, fixed) \
1087 template<_WX_VARARG_JOIN(N, _WX_VARARG_TEMPL)> \
1088 rettype name(_WX_VARARG_FIXED_EXPAND(numfixed, fixed), \
1089 _WX_VARARG_JOIN(N, _WX_VARARG_ARG)) \
1090 { \
1091 _WX_VARARG_FORMAT_STRING(numfixed, fixed); \
1092 _WX_VARARG_DO_CALL(return, impl, implUtf8, N, numfixed); \
1093 }
1094
1095 #define _WX_VARARG_DEFINE_FUNC_N0(rettype, name, \
1096 impl, implUtf8, numfixed, fixed) \
1097 inline rettype name(_WX_VARARG_FIXED_EXPAND(numfixed, fixed)) \
1098 { \
1099 _WX_VARARG_DO_CALL0(return, impl, implUtf8, numfixed); \
1100 }
1101
1102 // Macro to be used with _WX_VARARG_ITER in the implementation of
1103 // WX_DEFINE_VARARG_FUNC_VOID (see its documentation for the meaning of
1104 // arguments; rettype is ignored and is used only to satisfy _WX_VARARG_ITER's
1105 // requirements).
1106 #define _WX_VARARG_DEFINE_FUNC_VOID(N, rettype, name, \
1107 impl, implUtf8, numfixed, fixed) \
1108 template<_WX_VARARG_JOIN(N, _WX_VARARG_TEMPL)> \
1109 void name(_WX_VARARG_FIXED_EXPAND(numfixed, fixed), \
1110 _WX_VARARG_JOIN(N, _WX_VARARG_ARG)) \
1111 { \
1112 _WX_VARARG_FORMAT_STRING(numfixed, fixed); \
1113 _WX_VARARG_DO_CALL(wxEMPTY_PARAMETER_VALUE, \
1114 impl, implUtf8, N, numfixed); \
1115 }
1116
1117 #define _WX_VARARG_DEFINE_FUNC_VOID_N0(name, impl, implUtf8, numfixed, fixed) \
1118 inline void name(_WX_VARARG_FIXED_EXPAND(numfixed, fixed)) \
1119 { \
1120 _WX_VARARG_DO_CALL0(wxEMPTY_PARAMETER_VALUE, \
1121 impl, implUtf8, numfixed); \
1122 }
1123
1124 // Macro to be used with _WX_VARARG_ITER in the implementation of
1125 // WX_DEFINE_VARARG_FUNC_CTOR (see its documentation for the meaning of
1126 // arguments; rettype is ignored and is used only to satisfy _WX_VARARG_ITER's
1127 // requirements).
1128 #define _WX_VARARG_DEFINE_FUNC_CTOR(N, rettype, name, \
1129 impl, implUtf8, numfixed, fixed) \
1130 template<_WX_VARARG_JOIN(N, _WX_VARARG_TEMPL)> \
1131 name(_WX_VARARG_FIXED_EXPAND(numfixed, fixed), \
1132 _WX_VARARG_JOIN(N, _WX_VARARG_ARG)) \
1133 { \
1134 _WX_VARARG_FORMAT_STRING(numfixed, fixed); \
1135 _WX_VARARG_DO_CALL(wxEMPTY_PARAMETER_VALUE, \
1136 impl, implUtf8, N, numfixed); \
1137 }
1138
1139 #define _WX_VARARG_DEFINE_FUNC_CTOR_N0(name, impl, implUtf8, numfixed, fixed) \
1140 inline name(_WX_VARARG_FIXED_EXPAND(numfixed, fixed)) \
1141 { \
1142 _WX_VARARG_DO_CALL0(wxEMPTY_PARAMETER_VALUE, \
1143 impl, implUtf8, numfixed); \
1144 }
1145
1146 // Macro to be used with _WX_VARARG_ITER in the implementation of
1147 // WX_DEFINE_VARARG_FUNC_NOP, i.e. empty stub for a disabled vararg function.
1148 // The rettype and impl arguments are ignored.
1149 #define _WX_VARARG_DEFINE_FUNC_NOP(N, rettype, name, \
1150 impl, implUtf8, numfixed, fixed) \
1151 template<_WX_VARARG_JOIN(N, _WX_VARARG_TEMPL)> \
1152 void name(_WX_VARARG_FIXED_UNUSED_EXPAND(numfixed, fixed), \
1153 _WX_VARARG_JOIN(N, _WX_VARARG_ARG_UNUSED)) \
1154 {}
1155
1156 #define _WX_VARARG_DEFINE_FUNC_NOP_N0(name, numfixed, fixed) \
1157 inline void name(_WX_VARARG_FIXED_UNUSED_EXPAND(numfixed, fixed)) \
1158 {}
1159
1160
1161 // ----------------------------------------------------------------------------
1162 // workaround for OpenWatcom bug #351
1163 // ----------------------------------------------------------------------------
1164
1165 #ifdef __WATCOMC__
1166 // workaround for http://bugzilla.openwatcom.org/show_bug.cgi?id=351
1167
1168 // This macro can be used to forward a 'vararg' template to another one with
1169 // different fixed arguments types. Parameters are same as for
1170 // WX_DEFINE_VARARG_FUNC (rettype=void can be used here), 'convfixed' is how
1171 // to convert fixed arguments. For example, this is typical code for dealing
1172 // with different forms of format string:
1173 //
1174 // WX_DEFINE_VARARG_FUNC_VOID(Printf, 1, (const wxFormatString&),
1175 // DoPrintfWchar, DoPrintfUtf8)
1176 // #ifdef __WATCOMC__
1177 // WX_VARARG_WATCOM_WORKAROUND(void, Printf, 1, (const wxString&),
1178 // (wxFormatString(f1)))
1179 // WX_VARARG_WATCOM_WORKAROUND(void, Printf, 1, (const char*),
1180 // (wxFormatString(f1)))
1181 // ...
1182 #define WX_VARARG_WATCOM_WORKAROUND(rettype, name, numfixed, fixed, convfixed)\
1183 _WX_VARARG_ITER(_WX_VARARG_MAX_ARGS, \
1184 _WX_VARARG_WATCOM_WORKAROUND, \
1185 rettype, name, convfixed, dummy, numfixed, fixed)
1186
1187 #define WX_VARARG_WATCOM_WORKAROUND_CTOR(name, numfixed, fixed, convfixed) \
1188 _WX_VARARG_ITER(_WX_VARARG_MAX_ARGS, \
1189 _WX_VARARG_WATCOM_WORKAROUND_CTOR, \
1190 dummy, name, convfixed, dummy, numfixed, fixed)
1191
1192 #define _WX_VARARG_WATCOM_UNPACK_1(a1) a1
1193 #define _WX_VARARG_WATCOM_UNPACK_2(a1, a2) a1, a2
1194 #define _WX_VARARG_WATCOM_UNPACK_3(a1, a2, a3) a1, a2, a3
1195 #define _WX_VARARG_WATCOM_UNPACK_4(a1, a2, a3, a4) a1, a2, a3, a4
1196 #define _WX_VARARG_WATCOM_UNPACK(N, convfixed) \
1197 _WX_VARARG_WATCOM_UNPACK_##N convfixed
1198
1199 #define _WX_VARARG_PASS_WATCOM(i) a##i
1200
1201 #define _WX_VARARG_WATCOM_WORKAROUND(N, rettype, name, \
1202 convfixed, dummy, numfixed, fixed) \
1203 template<_WX_VARARG_JOIN(N, _WX_VARARG_TEMPL)> \
1204 rettype name(_WX_VARARG_FIXED_EXPAND(numfixed, fixed), \
1205 _WX_VARARG_JOIN(N, _WX_VARARG_ARG)) \
1206 { \
1207 return name(_WX_VARARG_WATCOM_UNPACK(numfixed, convfixed), \
1208 _WX_VARARG_JOIN(N, _WX_VARARG_PASS_WATCOM)); \
1209 }
1210
1211 #define _WX_VARARG_WATCOM_WORKAROUND_CTOR(N, dummy1, name, \
1212 convfixed, dummy2, numfixed, fixed) \
1213 template<_WX_VARARG_JOIN(N, _WX_VARARG_TEMPL)> \
1214 name(_WX_VARARG_FIXED_EXPAND(numfixed, fixed), \
1215 _WX_VARARG_JOIN(N, _WX_VARARG_ARG)) \
1216 { \
1217 name(_WX_VARARG_WATCOM_UNPACK(numfixed, convfixed), \
1218 _WX_VARARG_JOIN(N, _WX_VARARG_PASS_WATCOM)); \
1219 }
1220
1221 #endif // __WATCOMC__
1222
1223 #endif // _WX_STRVARARG_H_
wxWidgets (Impactor)