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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 do \
313 { \
314 if ( !fmt ) \
315 break; \
316 const int argtype = fmt->GetArgumentType(index); \
317 wxASSERT_MSG( (argtype & (expected_mask)) == argtype, \
318 "format specifier doesn't match argument type" ); \
319 } while ( wxFalse )
320 #else
321 // Just define it to suppress "unused parameter" warnings for the
322 // parameters which we don't use otherwise
323 #define wxASSERT_ARG_TYPE(fmt, index, expected_mask) \
324 wxUnusedVar(fmt); \
325 wxUnusedVar(index)
326 #endif // wxDEBUG_LEVEL/!wxDEBUG_LEVEL
327
328
329 #if defined(HAVE_TYPE_TRAITS) || defined(HAVE_TR1_TYPE_TRAITS)
330
331 // Note: this type is misnamed, so that the error message is easier to
332 // understand (no error happens for enums, because the IsEnum=true case is
333 // specialized).
334 template<bool IsEnum>
335 struct wxFormatStringSpecifierNonPodType {};
336
337 template<>
338 struct wxFormatStringSpecifierNonPodType<true>
339 {
340 enum { value = wxFormatString::Arg_Int };
341 };
342
343 template<typename T>
344 struct wxFormatStringSpecifier
345 {
346 #ifdef HAVE_TYPE_TRAITS
347 typedef std::is_enum<T> is_enum;
348 #elif defined HAVE_TR1_TYPE_TRAITS
349 typedef std::tr1::is_enum<T> is_enum;
350 #endif
351 enum { value = wxFormatStringSpecifierNonPodType<is_enum::value>::value };
352 };
353
354 #else // !HAVE_(TR1_)TYPE_TRAITS
355
356 template<typename T>
357 struct wxFormatStringSpecifier
358 {
359 // We can't detect enums without is_enum, so the only thing we can
360 // do is to accept unknown types. However, the only acceptable unknown
361 // types still are enums, which are promoted to ints, so return Arg_Int
362 // here. This will at least catch passing of non-POD types through ... at
363 // runtime.
364 //
365 // Furthermore, if the compiler doesn't have partial template
366 // specialization, we didn't cover pointers either.
367 #ifdef HAVE_PARTIAL_SPECIALIZATION
368 enum { value = wxFormatString::Arg_Int };
369 #else
370 enum { value = wxFormatString::Arg_Int | wxFormatString::Arg_Pointer };
371 #endif
372 };
373
374 #endif // HAVE_TR1_TYPE_TRAITS/!HAVE_TR1_TYPE_TRAITS
375
376
377 #ifdef HAVE_PARTIAL_SPECIALIZATION
378 template<typename T>
379 struct wxFormatStringSpecifier<T*>
380 {
381 enum { value = wxFormatString::Arg_Pointer };
382 };
383
384 template<typename T>
385 struct wxFormatStringSpecifier<const T*>
386 {
387 enum { value = wxFormatString::Arg_Pointer };
388 };
389 #endif // !HAVE_PARTIAL_SPECIALIZATION
390
391
392 #define wxFORMAT_STRING_SPECIFIER(T, arg) \
393 template<> struct wxFormatStringSpecifier<T> \
394 { \
395 enum { value = arg }; \
396 };
397
398 wxFORMAT_STRING_SPECIFIER(bool, wxFormatString::Arg_Int)
399 wxFORMAT_STRING_SPECIFIER(int, wxFormatString::Arg_Int)
400 wxFORMAT_STRING_SPECIFIER(unsigned int, wxFormatString::Arg_Int)
401 wxFORMAT_STRING_SPECIFIER(short int, wxFormatString::Arg_Int)
402 wxFORMAT_STRING_SPECIFIER(short unsigned int, wxFormatString::Arg_Int)
403 wxFORMAT_STRING_SPECIFIER(long int, wxFormatString::Arg_LongInt)
404 wxFORMAT_STRING_SPECIFIER(long unsigned int, wxFormatString::Arg_LongInt)
405 #ifdef wxLongLong_t
406 wxFORMAT_STRING_SPECIFIER(wxLongLong_t, wxFormatString::Arg_LongLongInt)
407 wxFORMAT_STRING_SPECIFIER(wxULongLong_t, wxFormatString::Arg_LongLongInt)
408 #endif
409 wxFORMAT_STRING_SPECIFIER(float, wxFormatString::Arg_Double)
410 wxFORMAT_STRING_SPECIFIER(double, wxFormatString::Arg_Double)
411 wxFORMAT_STRING_SPECIFIER(long double, wxFormatString::Arg_LongDouble)
412
413 #if wxWCHAR_T_IS_REAL_TYPE
414 wxFORMAT_STRING_SPECIFIER(wchar_t, wxFormatString::Arg_Char | wxFormatString::Arg_Int)
415 #endif
416
417 #if !wxUSE_UNICODE
418 wxFORMAT_STRING_SPECIFIER(char, wxFormatString::Arg_Char | wxFormatString::Arg_Int)
419 wxFORMAT_STRING_SPECIFIER(signed char, wxFormatString::Arg_Char | wxFormatString::Arg_Int)
420 wxFORMAT_STRING_SPECIFIER(unsigned char, wxFormatString::Arg_Char | wxFormatString::Arg_Int)
421 #endif
422
423 wxFORMAT_STRING_SPECIFIER(char*, wxFormatString::Arg_String)
424 wxFORMAT_STRING_SPECIFIER(unsigned char*, wxFormatString::Arg_String)
425 wxFORMAT_STRING_SPECIFIER(signed char*, wxFormatString::Arg_String)
426 wxFORMAT_STRING_SPECIFIER(const char*, wxFormatString::Arg_String)
427 wxFORMAT_STRING_SPECIFIER(const unsigned char*, wxFormatString::Arg_String)
428 wxFORMAT_STRING_SPECIFIER(const signed char*, wxFormatString::Arg_String)
429 wxFORMAT_STRING_SPECIFIER(wchar_t*, wxFormatString::Arg_String)
430 wxFORMAT_STRING_SPECIFIER(const wchar_t*, wxFormatString::Arg_String)
431
432 wxFORMAT_STRING_SPECIFIER(int*, wxFormatString::Arg_IntPtr | wxFormatString::Arg_Pointer)
433 wxFORMAT_STRING_SPECIFIER(short int*, wxFormatString::Arg_ShortIntPtr | wxFormatString::Arg_Pointer)
434 wxFORMAT_STRING_SPECIFIER(long int*, wxFormatString::Arg_LongIntPtr | wxFormatString::Arg_Pointer)
435
436 #undef wxFORMAT_STRING_SPECIFIER
437
438
439 // Converts an argument passed to wxPrint etc. into standard form expected,
440 // by wxXXX functions, e.g. all strings (wxString, char*, wchar_t*) are
441 // converted into wchar_t* or char* depending on the build.
442 template<typename T>
443 struct wxArgNormalizer
444 {
445 // Ctor. 'value' is the value passed as variadic argument, 'fmt' is pointer
446 // to printf-like format string or NULL if the variadic function doesn't
447 // use format string and 'index' is index of 'value' in variadic arguments
448 // list (starting at 1)
449 wxArgNormalizer(T value,
450 const wxFormatString *fmt, unsigned index)
451 : m_value(value)
452 {
453 wxASSERT_ARG_TYPE( fmt, index, wxFormatStringSpecifier<T>::value );
454 }
455
456 // Returns the value in a form that can be safely passed to real vararg
457 // functions. In case of strings, this is char* in ANSI build and wchar_t*
458 // in Unicode build.
459 T get() const { return m_value; }
460
461 T m_value;
462 };
463
464 // normalizer for passing arguments to functions working with wchar_t* (and
465 // until ANSI build is removed, char* in ANSI build as well - FIXME-UTF8)
466 // string representation
467 #if !wxUSE_UTF8_LOCALE_ONLY
468 template<typename T>
469 struct wxArgNormalizerWchar : public wxArgNormalizer<T>
470 {
471 wxArgNormalizerWchar(T value,
472 const wxFormatString *fmt, unsigned index)
473 : wxArgNormalizer<T>(value, fmt, index) {}
474 };
475 #endif // !wxUSE_UTF8_LOCALE_ONLY
476
477 // normalizer for passing arguments to functions working with UTF-8 encoded
478 // char* strings
479 #if wxUSE_UNICODE_UTF8
480 template<typename T>
481 struct wxArgNormalizerUtf8 : public wxArgNormalizer<T>
482 {
483 wxArgNormalizerUtf8(T value,
484 const wxFormatString *fmt, unsigned index)
485 : wxArgNormalizer<T>(value, fmt, index) {}
486 };
487
488 #define wxArgNormalizerNative wxArgNormalizerUtf8
489 #else // wxUSE_UNICODE_WCHAR
490 #define wxArgNormalizerNative wxArgNormalizerWchar
491 #endif // wxUSE_UNICODE_UTF8 // wxUSE_UNICODE_UTF8
492
493
494
495 // special cases for converting strings:
496
497
498 // base class for wxArgNormalizer<T> specializations that need to do conversion;
499 // CharType is either wxStringCharType or wchar_t in UTF-8 build when wrapping
500 // widechar CRT function
501 template<typename CharType>
502 struct wxArgNormalizerWithBuffer
503 {
504 typedef wxScopedCharTypeBuffer<CharType> CharBuffer;
505
506 wxArgNormalizerWithBuffer() {}
507 wxArgNormalizerWithBuffer(const CharBuffer& buf,
508 const wxFormatString *fmt,
509 unsigned index)
510 : m_value(buf)
511 {
512 wxASSERT_ARG_TYPE( fmt, index, wxFormatString::Arg_String );
513 }
514
515 const CharType *get() const { return m_value; }
516
517 CharBuffer m_value;
518 };
519
520 // string objects:
521 template<>
522 struct WXDLLIMPEXP_BASE wxArgNormalizerNative<const wxString&>
523 {
524 wxArgNormalizerNative(const wxString& s,
525 const wxFormatString *fmt,
526 unsigned index)
527 : m_value(s)
528 {
529 wxASSERT_ARG_TYPE( fmt, index, wxFormatString::Arg_String );
530 }
531
532 const wxStringCharType *get() const;
533
534 const wxString& m_value;
535 };
536
537 // c_str() values:
538 template<>
539 struct WXDLLIMPEXP_BASE wxArgNormalizerNative<const wxCStrData&>
540 {
541 wxArgNormalizerNative(const wxCStrData& value,
542 const wxFormatString *fmt,
543 unsigned index)
544 : m_value(value)
545 {
546 wxASSERT_ARG_TYPE( fmt, index, wxFormatString::Arg_String );
547 }
548
549 const wxStringCharType *get() const;
550
551 const wxCStrData& m_value;
552 };
553
554 // wxString/wxCStrData conversion to wchar_t* value
555 #if wxUSE_UNICODE_UTF8 && !wxUSE_UTF8_LOCALE_ONLY
556 template<>
557 struct WXDLLIMPEXP_BASE wxArgNormalizerWchar<const wxString&>
558 : public wxArgNormalizerWithBuffer<wchar_t>
559 {
560 wxArgNormalizerWchar(const wxString& s,
561 const wxFormatString *fmt, unsigned index);
562 };
563
564 template<>
565 struct WXDLLIMPEXP_BASE wxArgNormalizerWchar<const wxCStrData&>
566 : public wxArgNormalizerWithBuffer<wchar_t>
567 {
568 wxArgNormalizerWchar(const wxCStrData& s,
569 const wxFormatString *fmt, unsigned index);
570 };
571 #endif // wxUSE_UNICODE_UTF8 && !wxUSE_UTF8_LOCALE_ONLY
572
573
574 // C string pointers of the wrong type (wchar_t* for ANSI or UTF8 build,
575 // char* for wchar_t Unicode build or UTF8):
576 #if wxUSE_UNICODE_WCHAR
577
578 template<>
579 struct wxArgNormalizerWchar<const char*>
580 : public wxArgNormalizerWithBuffer<wchar_t>
581 {
582 wxArgNormalizerWchar(const char* s,
583 const wxFormatString *fmt, unsigned index)
584 : wxArgNormalizerWithBuffer<wchar_t>(wxConvLibc.cMB2WC(s), fmt, index) {}
585 };
586
587 #elif wxUSE_UNICODE_UTF8
588
589 template<>
590 struct wxArgNormalizerUtf8<const wchar_t*>
591 : public wxArgNormalizerWithBuffer<char>
592 {
593 wxArgNormalizerUtf8(const wchar_t* s,
594 const wxFormatString *fmt, unsigned index)
595 : wxArgNormalizerWithBuffer<char>(wxConvUTF8.cWC2MB(s), fmt, index) {}
596 };
597
598 template<>
599 struct wxArgNormalizerUtf8<const char*>
600 : public wxArgNormalizerWithBuffer<char>
601 {
602 wxArgNormalizerUtf8(const char* s,
603 const wxFormatString *fmt,
604 unsigned index)
605 {
606 wxASSERT_ARG_TYPE( fmt, index, wxFormatString::Arg_String );
607
608 if ( wxLocaleIsUtf8 )
609 {
610 m_value = wxScopedCharBuffer::CreateNonOwned(s);
611 }
612 else
613 {
614 // convert to widechar string first:
615 wxScopedWCharBuffer buf(wxConvLibc.cMB2WC(s));
616
617 // then to UTF-8:
618 if ( buf )
619 m_value = wxConvUTF8.cWC2MB(buf);
620 }
621 }
622 };
623
624 // UTF-8 build needs conversion to wchar_t* too:
625 #if !wxUSE_UTF8_LOCALE_ONLY
626 template<>
627 struct wxArgNormalizerWchar<const char*>
628 : public wxArgNormalizerWithBuffer<wchar_t>
629 {
630 wxArgNormalizerWchar(const char* s,
631 const wxFormatString *fmt, unsigned index)
632 : wxArgNormalizerWithBuffer<wchar_t>(wxConvLibc.cMB2WC(s), fmt, index) {}
633 };
634 #endif // !wxUSE_UTF8_LOCALE_ONLY
635
636 #else // ANSI - FIXME-UTF8
637
638 template<>
639 struct wxArgNormalizerWchar<const wchar_t*>
640 : public wxArgNormalizerWithBuffer<char>
641 {
642 wxArgNormalizerWchar(const wchar_t* s,
643 const wxFormatString *fmt, unsigned index)
644 : wxArgNormalizerWithBuffer<char>(wxConvLibc.cWC2MB(s), fmt, index) {}
645 };
646
647 #endif // wxUSE_UNICODE_WCHAR/wxUSE_UNICODE_UTF8/ANSI
648
649
650 // this macro is used to implement specialization that are exactly same as
651 // some other specialization, i.e. to "forward" the implementation (e.g. for
652 // T=wxString and T=const wxString&). Note that the ctor takes BaseT argument,
653 // not T!
654 #if wxUSE_UNICODE_UTF8
655 #if wxUSE_UTF8_LOCALE_ONLY
656 #define WX_ARG_NORMALIZER_FORWARD(T, BaseT) \
657 _WX_ARG_NORMALIZER_FORWARD_IMPL(wxArgNormalizerUtf8, T, BaseT)
658 #else // possibly non-UTF8 locales
659 #define WX_ARG_NORMALIZER_FORWARD(T, BaseT) \
660 _WX_ARG_NORMALIZER_FORWARD_IMPL(wxArgNormalizerWchar, T, BaseT); \
661 _WX_ARG_NORMALIZER_FORWARD_IMPL(wxArgNormalizerUtf8, T, BaseT)
662 #endif
663 #else // wxUSE_UNICODE_WCHAR
664 #define WX_ARG_NORMALIZER_FORWARD(T, BaseT) \
665 _WX_ARG_NORMALIZER_FORWARD_IMPL(wxArgNormalizerWchar, T, BaseT)
666 #endif // wxUSE_UNICODE_UTF8/wxUSE_UNICODE_WCHAR
667
668 #define _WX_ARG_NORMALIZER_FORWARD_IMPL(Normalizer, T, BaseT) \
669 template<> \
670 struct Normalizer<T> : public Normalizer<BaseT> \
671 { \
672 Normalizer(BaseT value, \
673 const wxFormatString *fmt, unsigned index) \
674 : Normalizer<BaseT>(value, fmt, index) {} \
675 }
676
677 // non-reference versions of specializations for string objects
678 WX_ARG_NORMALIZER_FORWARD(wxString, const wxString&);
679 WX_ARG_NORMALIZER_FORWARD(wxCStrData, const wxCStrData&);
680
681 // versions for passing non-const pointers:
682 WX_ARG_NORMALIZER_FORWARD(char*, const char*);
683 WX_ARG_NORMALIZER_FORWARD(wchar_t*, const wchar_t*);
684
685 // versions for passing wx[W]CharBuffer:
686 WX_ARG_NORMALIZER_FORWARD(wxScopedCharBuffer, const char*);
687 WX_ARG_NORMALIZER_FORWARD(const wxScopedCharBuffer&, const char*);
688 WX_ARG_NORMALIZER_FORWARD(wxScopedWCharBuffer, const wchar_t*);
689 WX_ARG_NORMALIZER_FORWARD(const wxScopedWCharBuffer&, const wchar_t*);
690 WX_ARG_NORMALIZER_FORWARD(wxCharBuffer, const char*);
691 WX_ARG_NORMALIZER_FORWARD(const wxCharBuffer&, const char*);
692 WX_ARG_NORMALIZER_FORWARD(wxWCharBuffer, const wchar_t*);
693 WX_ARG_NORMALIZER_FORWARD(const wxWCharBuffer&, const wchar_t*);
694
695 // versions for std::[w]string:
696 #if wxUSE_STD_STRING
697
698 #include "wx/stringimpl.h"
699
700 #if !wxUSE_UTF8_LOCALE_ONLY
701 template<>
702 struct wxArgNormalizerWchar<const std::string&>
703 : public wxArgNormalizerWchar<const char*>
704 {
705 wxArgNormalizerWchar(const std::string& s,
706 const wxFormatString *fmt, unsigned index)
707 : wxArgNormalizerWchar<const char*>(s.c_str(), fmt, index) {}
708 };
709
710 template<>
711 struct wxArgNormalizerWchar<const wxStdWideString&>
712 : public wxArgNormalizerWchar<const wchar_t*>
713 {
714 wxArgNormalizerWchar(const wxStdWideString& s,
715 const wxFormatString *fmt, unsigned index)
716 : wxArgNormalizerWchar<const wchar_t*>(s.c_str(), fmt, index) {}
717 };
718 #endif // !wxUSE_UTF8_LOCALE_ONLY
719
720 #if wxUSE_UNICODE_UTF8
721 template<>
722 struct wxArgNormalizerUtf8<const std::string&>
723 : public wxArgNormalizerUtf8<const char*>
724 {
725 wxArgNormalizerUtf8(const std::string& s,
726 const wxFormatString *fmt, unsigned index)
727 : wxArgNormalizerUtf8<const char*>(s.c_str(), fmt, index) {}
728 };
729
730 template<>
731 struct wxArgNormalizerUtf8<const wxStdWideString&>
732 : public wxArgNormalizerUtf8<const wchar_t*>
733 {
734 wxArgNormalizerUtf8(const wxStdWideString& s,
735 const wxFormatString *fmt, unsigned index)
736 : wxArgNormalizerUtf8<const wchar_t*>(s.c_str(), fmt, index) {}
737 };
738 #endif // wxUSE_UNICODE_UTF8
739
740 WX_ARG_NORMALIZER_FORWARD(std::string, const std::string&);
741 WX_ARG_NORMALIZER_FORWARD(wxStdWideString, const wxStdWideString&);
742
743 #endif // wxUSE_STD_STRING
744
745
746 // versions for wxUniChar, wxUniCharRef:
747 // (this is same for UTF-8 and Wchar builds, we just convert to wchar_t)
748 template<>
749 struct wxArgNormalizer<const wxUniChar&> : public wxArgNormalizer<wchar_t>
750 {
751 wxArgNormalizer(const wxUniChar& s,
752 const wxFormatString *fmt, unsigned index)
753 : wxArgNormalizer<wchar_t>(s.GetValue(), fmt, index) {}
754 };
755
756 // for wchar_t, default handler does the right thing
757
758 // char has to be treated differently in Unicode builds: a char argument may
759 // be used either for a character value (which should be converted into
760 // wxUniChar) or as an integer value (which should be left as-is). We take
761 // advantage of the fact that both char and wchar_t are converted into int
762 // in variadic arguments here.
763 #if wxUSE_UNICODE
764 template<typename T>
765 struct wxArgNormalizerNarrowChar
766 {
767 wxArgNormalizerNarrowChar(T value,
768 const wxFormatString *fmt, unsigned index)
769 {
770 wxASSERT_ARG_TYPE( fmt, index,
771 wxFormatString::Arg_Char | wxFormatString::Arg_Int );
772
773 // FIXME-UTF8: which one is better default in absence of fmt string
774 // (i.e. when used like e.g. Foo("foo", "bar", 'c', NULL)?
775 if ( !fmt || fmt->GetArgumentType(index) == wxFormatString::Arg_Char )
776 m_value = wx_truncate_cast(T, wxUniChar(value).GetValue());
777 else
778 m_value = value;
779 }
780
781 int get() const { return m_value; }
782
783 T m_value;
784 };
785
786 template<>
787 struct wxArgNormalizer<char> : public wxArgNormalizerNarrowChar<char>
788 {
789 wxArgNormalizer(char value,
790 const wxFormatString *fmt, unsigned index)
791 : wxArgNormalizerNarrowChar<char>(value, fmt, index) {}
792 };
793
794 template<>
795 struct wxArgNormalizer<unsigned char>
796 : public wxArgNormalizerNarrowChar<unsigned char>
797 {
798 wxArgNormalizer(unsigned char value,
799 const wxFormatString *fmt, unsigned index)
800 : wxArgNormalizerNarrowChar<unsigned char>(value, fmt, index) {}
801 };
802
803 template<>
804 struct wxArgNormalizer<signed char>
805 : public wxArgNormalizerNarrowChar<signed char>
806 {
807 wxArgNormalizer(signed char value,
808 const wxFormatString *fmt, unsigned index)
809 : wxArgNormalizerNarrowChar<signed char>(value, fmt, index) {}
810 };
811
812 #endif // wxUSE_UNICODE
813
814 // convert references:
815 WX_ARG_NORMALIZER_FORWARD(wxUniChar, const wxUniChar&);
816 WX_ARG_NORMALIZER_FORWARD(const wxUniCharRef&, const wxUniChar&);
817 WX_ARG_NORMALIZER_FORWARD(wxUniCharRef, const wxUniChar&);
818 WX_ARG_NORMALIZER_FORWARD(const wchar_t&, wchar_t);
819
820 WX_ARG_NORMALIZER_FORWARD(const char&, char);
821 WX_ARG_NORMALIZER_FORWARD(const unsigned char&, unsigned char);
822 WX_ARG_NORMALIZER_FORWARD(const signed char&, signed char);
823
824
825 #undef WX_ARG_NORMALIZER_FORWARD
826 #undef _WX_ARG_NORMALIZER_FORWARD_IMPL
827
828 // NB: Don't #undef wxASSERT_ARG_TYPE here as it's also used in wx/longlong.h.
829
830 // ----------------------------------------------------------------------------
831 // WX_VA_ARG_STRING
832 // ----------------------------------------------------------------------------
833
834 // Replacement for va_arg() for use with strings in functions that accept
835 // strings normalized by wxArgNormalizer<T>:
836
837 struct WXDLLIMPEXP_BASE wxArgNormalizedString
838 {
839 wxArgNormalizedString(const void* ptr) : m_ptr(ptr) {}
840
841 // returns true if non-NULL string was passed in
842 bool IsValid() const { return m_ptr != NULL; }
843 operator bool() const { return IsValid(); }
844
845 // extracts the string, returns empty string if NULL was passed in
846 wxString GetString() const;
847 operator wxString() const;
848
849 private:
850 const void *m_ptr;
851 };
852
853 #define WX_VA_ARG_STRING(ap) wxArgNormalizedString(va_arg(ap, const void*))
854
855 // ----------------------------------------------------------------------------
856 // implementation of the WX_DEFINE_VARARG_* macros
857 // ----------------------------------------------------------------------------
858
859 // NB: The vararg emulation code is limited to 30 variadic and 4 fixed
860 // arguments at the moment.
861 // If you need more variadic arguments, you need to
862 // 1) increase the value of _WX_VARARG_MAX_ARGS
863 // 2) add _WX_VARARG_JOIN_* and _WX_VARARG_ITER_* up to the new
864 // _WX_VARARG_MAX_ARGS value to the lists below
865 // If you need more fixed arguments, you need to
866 // 1) increase the value of _WX_VARARG_MAX_FIXED_ARGS
867 // 2) add _WX_VARARG_FIXED_EXPAND_* and _WX_VARARG_FIXED_UNUSED_EXPAND_*
868 // macros below
869 #define _WX_VARARG_MAX_ARGS 30
870 #define _WX_VARARG_MAX_FIXED_ARGS 4
871
872 #define _WX_VARARG_JOIN_1(m) m(1)
873 #define _WX_VARARG_JOIN_2(m) _WX_VARARG_JOIN_1(m), m(2)
874 #define _WX_VARARG_JOIN_3(m) _WX_VARARG_JOIN_2(m), m(3)
875 #define _WX_VARARG_JOIN_4(m) _WX_VARARG_JOIN_3(m), m(4)
876 #define _WX_VARARG_JOIN_5(m) _WX_VARARG_JOIN_4(m), m(5)
877 #define _WX_VARARG_JOIN_6(m) _WX_VARARG_JOIN_5(m), m(6)
878 #define _WX_VARARG_JOIN_7(m) _WX_VARARG_JOIN_6(m), m(7)
879 #define _WX_VARARG_JOIN_8(m) _WX_VARARG_JOIN_7(m), m(8)
880 #define _WX_VARARG_JOIN_9(m) _WX_VARARG_JOIN_8(m), m(9)
881 #define _WX_VARARG_JOIN_10(m) _WX_VARARG_JOIN_9(m), m(10)
882 #define _WX_VARARG_JOIN_11(m) _WX_VARARG_JOIN_10(m), m(11)
883 #define _WX_VARARG_JOIN_12(m) _WX_VARARG_JOIN_11(m), m(12)
884 #define _WX_VARARG_JOIN_13(m) _WX_VARARG_JOIN_12(m), m(13)
885 #define _WX_VARARG_JOIN_14(m) _WX_VARARG_JOIN_13(m), m(14)
886 #define _WX_VARARG_JOIN_15(m) _WX_VARARG_JOIN_14(m), m(15)
887 #define _WX_VARARG_JOIN_16(m) _WX_VARARG_JOIN_15(m), m(16)
888 #define _WX_VARARG_JOIN_17(m) _WX_VARARG_JOIN_16(m), m(17)
889 #define _WX_VARARG_JOIN_18(m) _WX_VARARG_JOIN_17(m), m(18)
890 #define _WX_VARARG_JOIN_19(m) _WX_VARARG_JOIN_18(m), m(19)
891 #define _WX_VARARG_JOIN_20(m) _WX_VARARG_JOIN_19(m), m(20)
892 #define _WX_VARARG_JOIN_21(m) _WX_VARARG_JOIN_20(m), m(21)
893 #define _WX_VARARG_JOIN_22(m) _WX_VARARG_JOIN_21(m), m(22)
894 #define _WX_VARARG_JOIN_23(m) _WX_VARARG_JOIN_22(m), m(23)
895 #define _WX_VARARG_JOIN_24(m) _WX_VARARG_JOIN_23(m), m(24)
896 #define _WX_VARARG_JOIN_25(m) _WX_VARARG_JOIN_24(m), m(25)
897 #define _WX_VARARG_JOIN_26(m) _WX_VARARG_JOIN_25(m), m(26)
898 #define _WX_VARARG_JOIN_27(m) _WX_VARARG_JOIN_26(m), m(27)
899 #define _WX_VARARG_JOIN_28(m) _WX_VARARG_JOIN_27(m), m(28)
900 #define _WX_VARARG_JOIN_29(m) _WX_VARARG_JOIN_28(m), m(29)
901 #define _WX_VARARG_JOIN_30(m) _WX_VARARG_JOIN_29(m), m(30)
902
903 #define _WX_VARARG_ITER_1(m,a,b,c,d,e,f) m(1,a,b,c,d,e,f)
904 #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)
905 #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)
906 #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)
907 #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)
908 #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)
909 #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)
910 #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)
911 #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)
912 #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)
913 #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)
914 #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)
915 #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)
916 #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)
917 #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)
918 #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)
919 #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)
920 #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)
921 #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)
922 #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)
923 #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)
924 #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)
925 #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)
926 #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)
927 #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)
928 #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)
929 #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)
930 #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)
931 #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)
932 #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)
933
934
935 #define _WX_VARARG_FIXED_EXPAND_1(t1) \
936 t1 f1
937 #define _WX_VARARG_FIXED_EXPAND_2(t1,t2) \
938 t1 f1, t2 f2
939 #define _WX_VARARG_FIXED_EXPAND_3(t1,t2,t3) \
940 t1 f1, t2 f2, t3 f3
941 #define _WX_VARARG_FIXED_EXPAND_4(t1,t2,t3,t4) \
942 t1 f1, t2 f2, t3 f3, t4 f4
943
944 #define _WX_VARARG_FIXED_UNUSED_EXPAND_1(t1) \
945 t1 WXUNUSED(f1)
946 #define _WX_VARARG_FIXED_UNUSED_EXPAND_2(t1,t2) \
947 t1 WXUNUSED(f1), t2 WXUNUSED(f2)
948 #define _WX_VARARG_FIXED_UNUSED_EXPAND_3(t1,t2,t3) \
949 t1 WXUNUSED(f1), t2 WXUNUSED(f2), t3 WXUNUSED(f3)
950 #define _WX_VARARG_FIXED_UNUSED_EXPAND_4(t1,t2,t3,t4) \
951 t1 WXUNUSED(f1), t2 WXUNUSED(f2), t3 WXUNUSED(f3), t4 WXUNUSED(f4)
952
953 #define _WX_VARARG_FIXED_TYPEDEFS_1(t1) \
954 typedef t1 TF1
955 #define _WX_VARARG_FIXED_TYPEDEFS_2(t1,t2) \
956 _WX_VARARG_FIXED_TYPEDEFS_1(t1); typedef t2 TF2
957 #define _WX_VARARG_FIXED_TYPEDEFS_3(t1,t2,t3) \
958 _WX_VARARG_FIXED_TYPEDEFS_2(t1,t2); typedef t3 TF3
959 #define _WX_VARARG_FIXED_TYPEDEFS_4(t1,t2,t3,t4) \
960 _WX_VARARG_FIXED_TYPEDEFS_3(t1,t2,t3); typedef t4 TF4
961
962 // This macro expands N-items tuple of fixed arguments types into part of
963 // function's declaration. For example,
964 // "_WX_VARARG_FIXED_EXPAND(3, (int, char*, int))" expands into
965 // "int f1, char* f2, int f3".
966 #define _WX_VARARG_FIXED_EXPAND(N, args) \
967 _WX_VARARG_FIXED_EXPAND_IMPL(N, args)
968 #define _WX_VARARG_FIXED_EXPAND_IMPL(N, args) \
969 _WX_VARARG_FIXED_EXPAND_##N args
970
971 // Ditto for unused arguments
972 #define _WX_VARARG_FIXED_UNUSED_EXPAND(N, args) \
973 _WX_VARARG_FIXED_UNUSED_EXPAND_IMPL(N, args)
974 #define _WX_VARARG_FIXED_UNUSED_EXPAND_IMPL(N, args) \
975 _WX_VARARG_FIXED_UNUSED_EXPAND_##N args
976
977 // Declarates typedefs for fixed arguments types; i-th fixed argument types
978 // will have TFi typedef.
979 #define _WX_VARARG_FIXED_TYPEDEFS(N, args) \
980 _WX_VARARG_FIXED_TYPEDEFS_IMPL(N, args)
981 #define _WX_VARARG_FIXED_TYPEDEFS_IMPL(N, args) \
982 _WX_VARARG_FIXED_TYPEDEFS_##N args
983
984
985 // This macro calls another macro 'm' passed as second argument 'N' times,
986 // with its only argument set to 1..N, and concatenates the results using
987 // comma as separator.
988 //
989 // An example:
990 // #define foo(i) x##i
991 // // this expands to "x1,x2,x3,x4"
992 // _WX_VARARG_JOIN(4, foo)
993 //
994 //
995 // N must not be greater than _WX_VARARG_MAX_ARGS (=30).
996 #define _WX_VARARG_JOIN(N, m) _WX_VARARG_JOIN_IMPL(N, m)
997 #define _WX_VARARG_JOIN_IMPL(N, m) _WX_VARARG_JOIN_##N(m)
998
999
1000 // This macro calls another macro 'm' passed as second argument 'N' times, with
1001 // its first argument set to 1..N and the remaining arguments set to 'a', 'b',
1002 // 'c', 'd', 'e' and 'f'. The results are separated with whitespace in the
1003 // expansion.
1004 //
1005 // An example:
1006 // // this macro expands to:
1007 // // foo(1,a,b,c,d,e,f)
1008 // // foo(2,a,b,c,d,e,f)
1009 // // foo(3,a,b,c,d,e,f)
1010 // _WX_VARARG_ITER(3, foo, a, b, c, d, e, f)
1011 //
1012 // N must not be greater than _WX_VARARG_MAX_ARGS (=30).
1013 #define _WX_VARARG_ITER(N,m,a,b,c,d,e,f) \
1014 _WX_VARARG_ITER_IMPL(N,m,a,b,c,d,e,f)
1015 #define _WX_VARARG_ITER_IMPL(N,m,a,b,c,d,e,f) \
1016 _WX_VARARG_ITER_##N(m,a,b,c,d,e,f)
1017
1018 // Generates code snippet for i-th "variadic" argument in vararg function's
1019 // prototype:
1020 #define _WX_VARARG_ARG(i) T##i a##i
1021
1022 // Like _WX_VARARG_ARG_UNUSED, but outputs argument's type with WXUNUSED:
1023 #define _WX_VARARG_ARG_UNUSED(i) T##i WXUNUSED(a##i)
1024
1025 // Generates code snippet for i-th type in vararg function's template<...>:
1026 #define _WX_VARARG_TEMPL(i) typename T##i
1027
1028 // Generates code snippet for passing i-th argument of vararg function
1029 // wrapper to its implementation, normalizing it in the process:
1030 #define _WX_VARARG_PASS_WCHAR(i) \
1031 wxArgNormalizerWchar<T##i>(a##i, fmt, i).get()
1032 #define _WX_VARARG_PASS_UTF8(i) \
1033 wxArgNormalizerUtf8<T##i>(a##i, fmt, i).get()
1034
1035
1036 // And the same for fixed arguments, _not_ normalizing it:
1037 #define _WX_VARARG_PASS_FIXED(i) f##i
1038
1039 #define _WX_VARARG_FIND_FMT(i) \
1040 (wxFormatStringArgumentFinder<TF##i>::find(f##i))
1041
1042 #define _WX_VARARG_FORMAT_STRING(numfixed, fixed) \
1043 _WX_VARARG_FIXED_TYPEDEFS(numfixed, fixed); \
1044 const wxFormatString *fmt = \
1045 (_WX_VARARG_JOIN(numfixed, _WX_VARARG_FIND_FMT))
1046
1047 #if wxUSE_UNICODE_UTF8
1048 #define _WX_VARARG_DO_CALL_UTF8(return_kw, impl, implUtf8, N, numfixed) \
1049 return_kw implUtf8(_WX_VARARG_JOIN(numfixed, _WX_VARARG_PASS_FIXED), \
1050 _WX_VARARG_JOIN(N, _WX_VARARG_PASS_UTF8))
1051 #define _WX_VARARG_DO_CALL0_UTF8(return_kw, impl, implUtf8, numfixed) \
1052 return_kw implUtf8(_WX_VARARG_JOIN(numfixed, _WX_VARARG_PASS_FIXED))
1053 #endif // wxUSE_UNICODE_UTF8
1054
1055 #define _WX_VARARG_DO_CALL_WCHAR(return_kw, impl, implUtf8, N, numfixed) \
1056 return_kw impl(_WX_VARARG_JOIN(numfixed, _WX_VARARG_PASS_FIXED), \
1057 _WX_VARARG_JOIN(N, _WX_VARARG_PASS_WCHAR))
1058 #define _WX_VARARG_DO_CALL0_WCHAR(return_kw, impl, implUtf8, numfixed) \
1059 return_kw impl(_WX_VARARG_JOIN(numfixed, _WX_VARARG_PASS_FIXED))
1060
1061 #if wxUSE_UNICODE_UTF8
1062 #if wxUSE_UTF8_LOCALE_ONLY
1063 #define _WX_VARARG_DO_CALL _WX_VARARG_DO_CALL_UTF8
1064 #define _WX_VARARG_DO_CALL0 _WX_VARARG_DO_CALL0_UTF8
1065 #else // possibly non-UTF8 locales
1066 #define _WX_VARARG_DO_CALL(return_kw, impl, implUtf8, N, numfixed) \
1067 if ( wxLocaleIsUtf8 ) \
1068 _WX_VARARG_DO_CALL_UTF8(return_kw, impl, implUtf8, N, numfixed);\
1069 else \
1070 _WX_VARARG_DO_CALL_WCHAR(return_kw, impl, implUtf8, N, numfixed)
1071
1072 #define _WX_VARARG_DO_CALL0(return_kw, impl, implUtf8, numfixed) \
1073 if ( wxLocaleIsUtf8 ) \
1074 _WX_VARARG_DO_CALL0_UTF8(return_kw, impl, implUtf8, numfixed); \
1075 else \
1076 _WX_VARARG_DO_CALL0_WCHAR(return_kw, impl, implUtf8, numfixed)
1077 #endif // wxUSE_UTF8_LOCALE_ONLY or not
1078 #else // wxUSE_UNICODE_WCHAR or ANSI
1079 #define _WX_VARARG_DO_CALL _WX_VARARG_DO_CALL_WCHAR
1080 #define _WX_VARARG_DO_CALL0 _WX_VARARG_DO_CALL0_WCHAR
1081 #endif // wxUSE_UNICODE_UTF8 / wxUSE_UNICODE_WCHAR
1082
1083
1084 // Macro to be used with _WX_VARARG_ITER in the implementation of
1085 // WX_DEFINE_VARARG_FUNC (see its documentation for the meaning of arguments)
1086 #define _WX_VARARG_DEFINE_FUNC(N, rettype, name, \
1087 impl, implUtf8, numfixed, fixed) \
1088 template<_WX_VARARG_JOIN(N, _WX_VARARG_TEMPL)> \
1089 rettype name(_WX_VARARG_FIXED_EXPAND(numfixed, fixed), \
1090 _WX_VARARG_JOIN(N, _WX_VARARG_ARG)) \
1091 { \
1092 _WX_VARARG_FORMAT_STRING(numfixed, fixed); \
1093 _WX_VARARG_DO_CALL(return, impl, implUtf8, N, numfixed); \
1094 }
1095
1096 #define _WX_VARARG_DEFINE_FUNC_N0(rettype, name, \
1097 impl, implUtf8, numfixed, fixed) \
1098 inline rettype name(_WX_VARARG_FIXED_EXPAND(numfixed, fixed)) \
1099 { \
1100 _WX_VARARG_DO_CALL0(return, impl, implUtf8, numfixed); \
1101 }
1102
1103 // Macro to be used with _WX_VARARG_ITER in the implementation of
1104 // WX_DEFINE_VARARG_FUNC_VOID (see its documentation for the meaning of
1105 // arguments; rettype is ignored and is used only to satisfy _WX_VARARG_ITER's
1106 // requirements).
1107 #define _WX_VARARG_DEFINE_FUNC_VOID(N, rettype, name, \
1108 impl, implUtf8, numfixed, fixed) \
1109 template<_WX_VARARG_JOIN(N, _WX_VARARG_TEMPL)> \
1110 void name(_WX_VARARG_FIXED_EXPAND(numfixed, fixed), \
1111 _WX_VARARG_JOIN(N, _WX_VARARG_ARG)) \
1112 { \
1113 _WX_VARARG_FORMAT_STRING(numfixed, fixed); \
1114 _WX_VARARG_DO_CALL(wxEMPTY_PARAMETER_VALUE, \
1115 impl, implUtf8, N, numfixed); \
1116 }
1117
1118 #define _WX_VARARG_DEFINE_FUNC_VOID_N0(name, impl, implUtf8, numfixed, fixed) \
1119 inline void name(_WX_VARARG_FIXED_EXPAND(numfixed, fixed)) \
1120 { \
1121 _WX_VARARG_DO_CALL0(wxEMPTY_PARAMETER_VALUE, \
1122 impl, implUtf8, numfixed); \
1123 }
1124
1125 // Macro to be used with _WX_VARARG_ITER in the implementation of
1126 // WX_DEFINE_VARARG_FUNC_CTOR (see its documentation for the meaning of
1127 // arguments; rettype is ignored and is used only to satisfy _WX_VARARG_ITER's
1128 // requirements).
1129 #define _WX_VARARG_DEFINE_FUNC_CTOR(N, rettype, name, \
1130 impl, implUtf8, numfixed, fixed) \
1131 template<_WX_VARARG_JOIN(N, _WX_VARARG_TEMPL)> \
1132 name(_WX_VARARG_FIXED_EXPAND(numfixed, fixed), \
1133 _WX_VARARG_JOIN(N, _WX_VARARG_ARG)) \
1134 { \
1135 _WX_VARARG_FORMAT_STRING(numfixed, fixed); \
1136 _WX_VARARG_DO_CALL(wxEMPTY_PARAMETER_VALUE, \
1137 impl, implUtf8, N, numfixed); \
1138 }
1139
1140 #define _WX_VARARG_DEFINE_FUNC_CTOR_N0(name, impl, implUtf8, numfixed, fixed) \
1141 inline name(_WX_VARARG_FIXED_EXPAND(numfixed, fixed)) \
1142 { \
1143 _WX_VARARG_DO_CALL0(wxEMPTY_PARAMETER_VALUE, \
1144 impl, implUtf8, numfixed); \
1145 }
1146
1147 // Macro to be used with _WX_VARARG_ITER in the implementation of
1148 // WX_DEFINE_VARARG_FUNC_NOP, i.e. empty stub for a disabled vararg function.
1149 // The rettype and impl arguments are ignored.
1150 #define _WX_VARARG_DEFINE_FUNC_NOP(N, rettype, name, \
1151 impl, implUtf8, numfixed, fixed) \
1152 template<_WX_VARARG_JOIN(N, _WX_VARARG_TEMPL)> \
1153 void name(_WX_VARARG_FIXED_UNUSED_EXPAND(numfixed, fixed), \
1154 _WX_VARARG_JOIN(N, _WX_VARARG_ARG_UNUSED)) \
1155 {}
1156
1157 #define _WX_VARARG_DEFINE_FUNC_NOP_N0(name, numfixed, fixed) \
1158 inline void name(_WX_VARARG_FIXED_UNUSED_EXPAND(numfixed, fixed)) \
1159 {}
1160
1161
1162 // ----------------------------------------------------------------------------
1163 // workaround for OpenWatcom bug #351
1164 // ----------------------------------------------------------------------------
1165
1166 #ifdef __WATCOMC__
1167 // workaround for http://bugzilla.openwatcom.org/show_bug.cgi?id=351
1168
1169 // This macro can be used to forward a 'vararg' template to another one with
1170 // different fixed arguments types. Parameters are same as for
1171 // WX_DEFINE_VARARG_FUNC (rettype=void can be used here), 'convfixed' is how
1172 // to convert fixed arguments. For example, this is typical code for dealing
1173 // with different forms of format string:
1174 //
1175 // WX_DEFINE_VARARG_FUNC_VOID(Printf, 1, (const wxFormatString&),
1176 // DoPrintfWchar, DoPrintfUtf8)
1177 // #ifdef __WATCOMC__
1178 // WX_VARARG_WATCOM_WORKAROUND(void, Printf, 1, (const wxString&),
1179 // (wxFormatString(f1)))
1180 // WX_VARARG_WATCOM_WORKAROUND(void, Printf, 1, (const char*),
1181 // (wxFormatString(f1)))
1182 // ...
1183 #define WX_VARARG_WATCOM_WORKAROUND(rettype, name, numfixed, fixed, convfixed)\
1184 _WX_VARARG_ITER(_WX_VARARG_MAX_ARGS, \
1185 _WX_VARARG_WATCOM_WORKAROUND, \
1186 rettype, name, convfixed, dummy, numfixed, fixed)
1187
1188 #define WX_VARARG_WATCOM_WORKAROUND_CTOR(name, numfixed, fixed, convfixed) \
1189 _WX_VARARG_ITER(_WX_VARARG_MAX_ARGS, \
1190 _WX_VARARG_WATCOM_WORKAROUND_CTOR, \
1191 dummy, name, convfixed, dummy, numfixed, fixed)
1192
1193 #define _WX_VARARG_WATCOM_UNPACK_1(a1) a1
1194 #define _WX_VARARG_WATCOM_UNPACK_2(a1, a2) a1, a2
1195 #define _WX_VARARG_WATCOM_UNPACK_3(a1, a2, a3) a1, a2, a3
1196 #define _WX_VARARG_WATCOM_UNPACK_4(a1, a2, a3, a4) a1, a2, a3, a4
1197 #define _WX_VARARG_WATCOM_UNPACK(N, convfixed) \
1198 _WX_VARARG_WATCOM_UNPACK_##N convfixed
1199
1200 #define _WX_VARARG_PASS_WATCOM(i) a##i
1201
1202 #define _WX_VARARG_WATCOM_WORKAROUND(N, rettype, name, \
1203 convfixed, dummy, numfixed, fixed) \
1204 template<_WX_VARARG_JOIN(N, _WX_VARARG_TEMPL)> \
1205 rettype name(_WX_VARARG_FIXED_EXPAND(numfixed, fixed), \
1206 _WX_VARARG_JOIN(N, _WX_VARARG_ARG)) \
1207 { \
1208 return name(_WX_VARARG_WATCOM_UNPACK(numfixed, convfixed), \
1209 _WX_VARARG_JOIN(N, _WX_VARARG_PASS_WATCOM)); \
1210 }
1211
1212 #define _WX_VARARG_WATCOM_WORKAROUND_CTOR(N, dummy1, name, \
1213 convfixed, dummy2, numfixed, fixed) \
1214 template<_WX_VARARG_JOIN(N, _WX_VARARG_TEMPL)> \
1215 name(_WX_VARARG_FIXED_EXPAND(numfixed, fixed), \
1216 _WX_VARARG_JOIN(N, _WX_VARARG_ARG)) \
1217 { \
1218 name(_WX_VARARG_WATCOM_UNPACK(numfixed, convfixed), \
1219 _WX_VARARG_JOIN(N, _WX_VARARG_PASS_WATCOM)); \
1220 }
1221
1222 #endif // __WATCOMC__
1223
1224 #endif // _WX_STRVARARG_H_
wxWidgets (Impactor)