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1 | ///////////////////////////////////////////////////////////////////////////// | |
2 | // Name: src/common/any.cpp | |
3 | // Purpose: wxAny class, container for any type | |
4 | // Author: Jaakko Salli | |
5 | // Modified by: | |
6 | // Created: 07/05/2009 | |
7 | // RCS-ID: $Id$ | |
8 | // Copyright: (c) wxWidgets team | |
9 | // Licence: wxWindows licence | |
10 | ///////////////////////////////////////////////////////////////////////////// | |
11 | ||
12 | // For compilers that support precompilation, includes "wx/wx.h". | |
13 | #include "wx/wxprec.h" | |
14 | ||
15 | #ifdef __BORLANDC__ | |
16 | #pragma hdrstop | |
17 | #endif | |
18 | ||
19 | #include "wx/any.h" | |
20 | ||
21 | #if wxUSE_ANY | |
22 | ||
23 | #ifndef WX_PRECOMP | |
24 | #include "wx/math.h" | |
25 | #include "wx/crt.h" | |
26 | #endif | |
27 | ||
28 | #include "wx/vector.h" | |
29 | #include "wx/module.h" | |
30 | #include "wx/hashmap.h" | |
31 | #include "wx/hashset.h" | |
32 | ||
33 | using namespace wxPrivate; | |
34 | ||
35 | #if wxUSE_VARIANT | |
36 | ||
37 | //------------------------------------------------------------------------- | |
38 | // wxAnyValueTypeGlobals | |
39 | //------------------------------------------------------------------------- | |
40 | ||
41 | WX_DECLARE_HASH_MAP(wxAnyValueType*, | |
42 | wxVariantDataFactory, | |
43 | wxPointerHash, | |
44 | wxPointerEqual, | |
45 | wxAnyTypeToVariantDataFactoryMap); | |
46 | ||
47 | // | |
48 | // Helper class to manage global variables related to type conversion | |
49 | // between wxAny and wxVariant. | |
50 | // | |
51 | class wxAnyValueTypeGlobals | |
52 | { | |
53 | public: | |
54 | wxAnyValueTypeGlobals() | |
55 | { | |
56 | } | |
57 | ~wxAnyValueTypeGlobals() | |
58 | { | |
59 | m_anyToVariant.clear(); | |
60 | } | |
61 | ||
62 | void PreRegisterAnyToVariant(wxAnyToVariantRegistration* reg) | |
63 | { | |
64 | m_anyToVariantRegs.push_back(reg); | |
65 | } | |
66 | ||
67 | // Find wxVariantData factory function for given value type, | |
68 | // (or compatible, if possible) | |
69 | wxVariantDataFactory FindVariantDataFactory(const wxAnyValueType* type_) | |
70 | { | |
71 | // Ideally we'd have the hash map of type 'const wxAnyValueType*', | |
72 | // but WX_DECLARE_HASH_MAP() has some trouble with it. | |
73 | wxAnyValueType* type = const_cast<wxAnyValueType*>(type_); | |
74 | ||
75 | wxAnyTypeToVariantDataFactoryMap& anyToVariant = m_anyToVariant; | |
76 | wxAnyTypeToVariantDataFactoryMap::const_iterator it; | |
77 | it = anyToVariant.find(type); | |
78 | if ( it != anyToVariant.end() ) | |
79 | return it->second; | |
80 | ||
81 | // Not found, handle pre-registrations | |
82 | size_t i = m_anyToVariantRegs.size(); | |
83 | while ( i > 0 ) | |
84 | { | |
85 | i--; | |
86 | wxAnyToVariantRegistration* reg = m_anyToVariantRegs[i]; | |
87 | wxAnyValueType* assocType = reg->GetAssociatedType(); | |
88 | if ( assocType ) | |
89 | { | |
90 | // Both variant data and wxAnyValueType have been | |
91 | // now been properly initialized, so remove the | |
92 | // pre-registration entry and move data to anyToVarian | |
93 | // map. | |
94 | anyToVariant[assocType] = reg->GetFactory(); | |
95 | m_anyToVariantRegs.erase( m_anyToVariantRegs.begin() + i ); | |
96 | } | |
97 | } | |
98 | ||
99 | // Then try again | |
100 | it = anyToVariant.find(type); | |
101 | if ( it != anyToVariant.end() ) | |
102 | return it->second; | |
103 | ||
104 | // Finally, attempt to find a compatible type | |
105 | for ( it = anyToVariant.begin(); it != anyToVariant.end(); it++ ) | |
106 | { | |
107 | if ( type->IsSameType(it->first) ) | |
108 | { | |
109 | wxVariantDataFactory f = it->second; | |
110 | anyToVariant[type] = f; | |
111 | return f; | |
112 | } | |
113 | } | |
114 | ||
115 | // Nothing found | |
116 | return NULL; | |
117 | } | |
118 | ||
119 | private: | |
120 | wxAnyTypeToVariantDataFactoryMap m_anyToVariant; | |
121 | wxVector<wxAnyToVariantRegistration*> m_anyToVariantRegs; | |
122 | }; | |
123 | ||
124 | static wxAnyValueTypeGlobals* g_wxAnyValueTypeGlobals = NULL; | |
125 | ||
126 | ||
127 | WX_IMPLEMENT_ANY_VALUE_TYPE(wxAnyValueTypeImplVariantData) | |
128 | ||
129 | void wxPreRegisterAnyToVariant(wxAnyToVariantRegistration* reg) | |
130 | { | |
131 | if ( !g_wxAnyValueTypeGlobals ) | |
132 | g_wxAnyValueTypeGlobals = new wxAnyValueTypeGlobals(); | |
133 | g_wxAnyValueTypeGlobals->PreRegisterAnyToVariant(reg); | |
134 | } | |
135 | ||
136 | bool wxConvertAnyToVariant(const wxAny& any, wxVariant* variant) | |
137 | { | |
138 | if ( any.IsNull() ) | |
139 | { | |
140 | variant->MakeNull(); | |
141 | return true; | |
142 | } | |
143 | ||
144 | // (signed) integer is a special case, because there is only one type | |
145 | // in wxAny, and two ("long" and "longlong") in wxVariant. For better | |
146 | // backwards compatibility, convert all values that fit in "long", | |
147 | // and others to "longlong". | |
148 | if ( wxANY_CHECK_TYPE(any, signed int) ) | |
149 | { | |
150 | #ifdef wxLongLong_t | |
151 | wxLongLong_t ll = 0; | |
152 | if ( any.GetAs(&ll) ) | |
153 | { | |
154 | // NB: Do not use LONG_MAX here. Explicitly using 32-bit | |
155 | // integer constraint yields more consistent behaviour across | |
156 | // builds. | |
157 | if ( ll > wxINT32_MAX || ll < wxINT32_MIN ) | |
158 | *variant = wxLongLong(ll); | |
159 | else | |
160 | *variant = (long) wxLongLong(ll).GetLo(); | |
161 | } | |
162 | else | |
163 | { | |
164 | return false; | |
165 | } | |
166 | #else | |
167 | long l; | |
168 | if ( any.GetAs(&l) ) | |
169 | *variant = l; | |
170 | else | |
171 | return false; | |
172 | #endif | |
173 | return true; | |
174 | } | |
175 | ||
176 | // Find matching factory function | |
177 | wxVariantDataFactory f = | |
178 | g_wxAnyValueTypeGlobals->FindVariantDataFactory(any.GetType()); | |
179 | ||
180 | wxVariantData* data = NULL; | |
181 | ||
182 | if ( f ) | |
183 | { | |
184 | data = f(any); | |
185 | } | |
186 | else | |
187 | { | |
188 | // Check if wxAny wrapped wxVariantData* | |
189 | if ( !any.GetAs(&data) ) | |
190 | { | |
191 | // Ok, one last chance: while unlikely, it is possible that the | |
192 | // wxAny actually contains wxVariant. | |
193 | if ( wxANY_CHECK_TYPE(any, wxVariant) ) | |
194 | *variant = wxANY_AS(any, wxVariant); | |
195 | return false; | |
196 | } | |
197 | ||
198 | // Wrapper's GetValue() does not increase reference | |
199 | // count, se have to do it before the data gets passed | |
200 | // to a new variant. | |
201 | data->IncRef(); | |
202 | } | |
203 | ||
204 | variant->SetData(data); | |
205 | return true; | |
206 | } | |
207 | ||
208 | // | |
209 | // This class is to make sure that wxAnyValueType instances | |
210 | // etc. get freed correctly. We must use a separate wxAnyValueTypeGlobals | |
211 | // because wxModule itself is instantiated too late. | |
212 | // | |
213 | class wxAnyValueTypeGlobalsManager : public wxModule | |
214 | { | |
215 | DECLARE_DYNAMIC_CLASS(wxAnyValueTypeGlobalsManager) | |
216 | public: | |
217 | wxAnyValueTypeGlobalsManager() : wxModule() { } | |
218 | virtual ~wxAnyValueTypeGlobalsManager() { } | |
219 | ||
220 | virtual bool OnInit() | |
221 | { | |
222 | return true; | |
223 | } | |
224 | virtual void OnExit() | |
225 | { | |
226 | wxDELETE(g_wxAnyValueTypeGlobals); | |
227 | } | |
228 | private: | |
229 | }; | |
230 | ||
231 | IMPLEMENT_DYNAMIC_CLASS(wxAnyValueTypeGlobalsManager, wxModule) | |
232 | ||
233 | #endif // wxUSE_VARIANT | |
234 | ||
235 | ||
236 | //------------------------------------------------------------------------- | |
237 | // Dynamic conversion member functions | |
238 | //------------------------------------------------------------------------- | |
239 | ||
240 | // | |
241 | // Define integer minimum and maximum as helpers | |
242 | #ifdef wxLongLong_t | |
243 | #define UseIntMin (wxINT64_MIN) | |
244 | #define UseIntMax (wxINT64_MAX) | |
245 | #define UseUintMax (wxUINT64_MAX) | |
246 | #else | |
247 | #define UseIntMin (LONG_MIN) | |
248 | #define UseIntMax (LONG_MAX) | |
249 | #define UseUintMax (ULONG_MAX) | |
250 | #endif | |
251 | ||
252 | namespace | |
253 | { | |
254 | ||
255 | const double UseIntMinF = static_cast<double>(UseIntMin); | |
256 | const double UseIntMaxF = static_cast<double>(UseIntMax); | |
257 | const double UseUintMaxF = static_cast<double>(UseUintMax); | |
258 | ||
259 | } // anonymous namespace | |
260 | ||
261 | bool wxAnyValueTypeImplInt::ConvertValue(const wxAnyValueBuffer& src, | |
262 | wxAnyValueType* dstType, | |
263 | wxAnyValueBuffer& dst) const | |
264 | { | |
265 | wxAnyBaseIntType value = GetValue(src); | |
266 | if ( wxANY_VALUE_TYPE_CHECK_TYPE(dstType, wxString) ) | |
267 | { | |
268 | #ifdef wxLongLong_t | |
269 | wxLongLong ll(value); | |
270 | wxString s = ll.ToString(); | |
271 | #else | |
272 | wxString s = wxString::Format(wxS("%ld"), (long)value); | |
273 | #endif | |
274 | wxAnyValueTypeImpl<wxString>::SetValue(s, dst); | |
275 | } | |
276 | else if ( wxANY_VALUE_TYPE_CHECK_TYPE(dstType, wxAnyBaseUintType) ) | |
277 | { | |
278 | if ( value < 0 ) | |
279 | return false; | |
280 | wxAnyBaseUintType ul = (wxAnyBaseUintType) value; | |
281 | wxAnyValueTypeImplUint::SetValue(ul, dst); | |
282 | } | |
283 | else if ( wxANY_VALUE_TYPE_CHECK_TYPE(dstType, double) ) | |
284 | { | |
285 | double value2 = static_cast<double>(value); | |
286 | wxAnyValueTypeImplDouble::SetValue(value2, dst); | |
287 | } | |
288 | else if ( wxANY_VALUE_TYPE_CHECK_TYPE(dstType, bool) ) | |
289 | { | |
290 | bool value2 = value ? true : false; | |
291 | wxAnyValueTypeImpl<bool>::SetValue(value2, dst); | |
292 | } | |
293 | else | |
294 | return false; | |
295 | ||
296 | return true; | |
297 | } | |
298 | ||
299 | bool wxAnyValueTypeImplUint::ConvertValue(const wxAnyValueBuffer& src, | |
300 | wxAnyValueType* dstType, | |
301 | wxAnyValueBuffer& dst) const | |
302 | { | |
303 | wxAnyBaseUintType value = GetValue(src); | |
304 | if ( wxANY_VALUE_TYPE_CHECK_TYPE(dstType, wxString) ) | |
305 | { | |
306 | #ifdef wxLongLong_t | |
307 | wxULongLong ull(value); | |
308 | wxString s = ull.ToString(); | |
309 | #else | |
310 | wxString s = wxString::Format(wxS("%lu"), (long)value); | |
311 | #endif | |
312 | wxAnyValueTypeImpl<wxString>::SetValue(s, dst); | |
313 | } | |
314 | else if ( wxANY_VALUE_TYPE_CHECK_TYPE(dstType, wxAnyBaseIntType) ) | |
315 | { | |
316 | if ( value > UseIntMax ) | |
317 | return false; | |
318 | wxAnyBaseIntType l = (wxAnyBaseIntType) value; | |
319 | wxAnyValueTypeImplInt::SetValue(l, dst); | |
320 | } | |
321 | else if ( wxANY_VALUE_TYPE_CHECK_TYPE(dstType, double) ) | |
322 | { | |
323 | #ifndef __VISUALC6__ | |
324 | double value2 = static_cast<double>(value); | |
325 | #else | |
326 | // VC6 doesn't implement conversion from unsigned __int64 to double | |
327 | wxAnyBaseIntType value0 = static_cast<wxAnyBaseIntType>(value); | |
328 | double value2 = static_cast<double>(value0); | |
329 | #endif | |
330 | wxAnyValueTypeImplDouble::SetValue(value2, dst); | |
331 | } | |
332 | else if ( wxANY_VALUE_TYPE_CHECK_TYPE(dstType, bool) ) | |
333 | { | |
334 | bool value2 = value ? true : false; | |
335 | wxAnyValueTypeImpl<bool>::SetValue(value2, dst); | |
336 | } | |
337 | else | |
338 | return false; | |
339 | ||
340 | return true; | |
341 | } | |
342 | ||
343 | // Convert wxString to destination wxAny value type | |
344 | bool wxAnyConvertString(const wxString& value, | |
345 | wxAnyValueType* dstType, | |
346 | wxAnyValueBuffer& dst) | |
347 | { | |
348 | if ( wxANY_VALUE_TYPE_CHECK_TYPE(dstType, wxString) ) | |
349 | { | |
350 | wxAnyValueTypeImpl<wxString>::SetValue(value, dst); | |
351 | } | |
352 | else if ( wxANY_VALUE_TYPE_CHECK_TYPE(dstType, wxAnyBaseIntType) ) | |
353 | { | |
354 | wxAnyBaseIntType value2; | |
355 | #ifdef wxLongLong_t | |
356 | if ( !value.ToLongLong(&value2) ) | |
357 | #else | |
358 | if ( !value.ToLong(&value2) ) | |
359 | #endif | |
360 | return false; | |
361 | wxAnyValueTypeImplInt::SetValue(value2, dst); | |
362 | } | |
363 | else if ( wxANY_VALUE_TYPE_CHECK_TYPE(dstType, wxAnyBaseUintType) ) | |
364 | { | |
365 | wxAnyBaseUintType value2; | |
366 | #ifdef wxLongLong_t | |
367 | if ( !value.ToULongLong(&value2) ) | |
368 | #else | |
369 | if ( !value.ToULong(&value2) ) | |
370 | #endif | |
371 | return false; | |
372 | wxAnyValueTypeImplUint::SetValue(value2, dst); | |
373 | } | |
374 | else if ( wxANY_VALUE_TYPE_CHECK_TYPE(dstType, double) ) | |
375 | { | |
376 | double value2; | |
377 | if ( !value.ToDouble(&value2) ) | |
378 | return false; | |
379 | wxAnyValueTypeImplDouble::SetValue(value2, dst); | |
380 | } | |
381 | else if ( wxANY_VALUE_TYPE_CHECK_TYPE(dstType, bool) ) | |
382 | { | |
383 | bool value2; | |
384 | wxString s(value); | |
385 | s.MakeLower(); | |
386 | if ( s == wxS("true") || | |
387 | s == wxS("yes") || | |
388 | s == wxS('1') ) | |
389 | value2 = true; | |
390 | else if ( s == wxS("false") || | |
391 | s == wxS("no") || | |
392 | s == wxS('0') ) | |
393 | value2 = false; | |
394 | else | |
395 | return false; | |
396 | ||
397 | wxAnyValueTypeImpl<bool>::SetValue(value2, dst); | |
398 | } | |
399 | else | |
400 | return false; | |
401 | ||
402 | return true; | |
403 | } | |
404 | ||
405 | bool wxAnyValueTypeImpl<bool>::ConvertValue(const wxAnyValueBuffer& src, | |
406 | wxAnyValueType* dstType, | |
407 | wxAnyValueBuffer& dst) const | |
408 | { | |
409 | bool value = GetValue(src); | |
410 | if ( wxANY_VALUE_TYPE_CHECK_TYPE(dstType, wxAnyBaseIntType) ) | |
411 | { | |
412 | wxAnyBaseIntType value2 = static_cast<wxAnyBaseIntType>(value); | |
413 | wxAnyValueTypeImplInt::SetValue(value2, dst); | |
414 | } | |
415 | else if ( wxANY_VALUE_TYPE_CHECK_TYPE(dstType, wxAnyBaseUintType) ) | |
416 | { | |
417 | wxAnyBaseIntType value2 = static_cast<wxAnyBaseUintType>(value); | |
418 | wxAnyValueTypeImplUint::SetValue(value2, dst); | |
419 | } | |
420 | else if ( wxANY_VALUE_TYPE_CHECK_TYPE(dstType, wxString) ) | |
421 | { | |
422 | wxString s; | |
423 | if ( value ) | |
424 | s = wxS("true"); | |
425 | else | |
426 | s = wxS("false"); | |
427 | wxAnyValueTypeImpl<wxString>::SetValue(s, dst); | |
428 | } | |
429 | else | |
430 | return false; | |
431 | ||
432 | return true; | |
433 | } | |
434 | ||
435 | bool wxAnyValueTypeImplDouble::ConvertValue(const wxAnyValueBuffer& src, | |
436 | wxAnyValueType* dstType, | |
437 | wxAnyValueBuffer& dst) const | |
438 | { | |
439 | double value = GetValue(src); | |
440 | if ( wxANY_VALUE_TYPE_CHECK_TYPE(dstType, wxAnyBaseIntType) ) | |
441 | { | |
442 | if ( value < UseIntMinF || value > UseIntMaxF ) | |
443 | return false; | |
444 | wxAnyBaseUintType ul = static_cast<wxAnyBaseUintType>(value); | |
445 | wxAnyValueTypeImplUint::SetValue(ul, dst); | |
446 | } | |
447 | else if ( wxANY_VALUE_TYPE_CHECK_TYPE(dstType, wxAnyBaseUintType) ) | |
448 | { | |
449 | if ( value < 0.0 || value > UseUintMaxF ) | |
450 | return false; | |
451 | wxAnyBaseUintType ul = static_cast<wxAnyBaseUintType>(value); | |
452 | wxAnyValueTypeImplUint::SetValue(ul, dst); | |
453 | } | |
454 | else if ( wxANY_VALUE_TYPE_CHECK_TYPE(dstType, wxString) ) | |
455 | { | |
456 | wxString s = wxString::Format(wxS("%.14g"), value); | |
457 | wxAnyValueTypeImpl<wxString>::SetValue(s, dst); | |
458 | } | |
459 | else | |
460 | return false; | |
461 | ||
462 | return true; | |
463 | } | |
464 | ||
465 | WX_IMPLEMENT_ANY_VALUE_TYPE(wxAnyValueTypeImplInt) | |
466 | WX_IMPLEMENT_ANY_VALUE_TYPE(wxAnyValueTypeImplUint) | |
467 | WX_IMPLEMENT_ANY_VALUE_TYPE(wxAnyValueTypeImpl<bool>) | |
468 | WX_IMPLEMENT_ANY_VALUE_TYPE(wxAnyValueTypeImplDouble) | |
469 | ||
470 | WX_IMPLEMENT_ANY_VALUE_TYPE(wxAnyValueTypeImplwxString) | |
471 | WX_IMPLEMENT_ANY_VALUE_TYPE(wxAnyValueTypeImplConstCharPtr) | |
472 | WX_IMPLEMENT_ANY_VALUE_TYPE(wxAnyValueTypeImplConstWchar_tPtr) | |
473 | ||
474 | #if wxUSE_DATETIME | |
475 | WX_IMPLEMENT_ANY_VALUE_TYPE(wxAnyValueTypeImpl<wxDateTime>) | |
476 | #endif // wxUSE_DATETIME | |
477 | ||
478 | //WX_IMPLEMENT_ANY_VALUE_TYPE(wxAnyValueTypeImpl<wxObject*>) | |
479 | //WX_IMPLEMENT_ANY_VALUE_TYPE(wxAnyValueTypeImpl<wxArrayString>) | |
480 | ||
481 | //------------------------------------------------------------------------- | |
482 | // wxAnyNullValueType implementation | |
483 | //------------------------------------------------------------------------- | |
484 | ||
485 | class wxAnyNullValue | |
486 | { | |
487 | private: | |
488 | void* m_dummy; | |
489 | }; | |
490 | ||
491 | template <> | |
492 | class wxAnyValueTypeImpl<wxAnyNullValue> : public wxAnyValueType | |
493 | { | |
494 | WX_DECLARE_ANY_VALUE_TYPE(wxAnyValueTypeImpl<wxAnyNullValue>) | |
495 | public: | |
496 | // Dummy implementations | |
497 | virtual void DeleteValue(wxAnyValueBuffer& buf) const | |
498 | { | |
499 | wxUnusedVar(buf); | |
500 | } | |
501 | ||
502 | virtual void CopyBuffer(const wxAnyValueBuffer& src, | |
503 | wxAnyValueBuffer& dst) const | |
504 | { | |
505 | wxUnusedVar(src); | |
506 | wxUnusedVar(dst); | |
507 | } | |
508 | ||
509 | virtual bool ConvertValue(const wxAnyValueBuffer& src, | |
510 | wxAnyValueType* dstType, | |
511 | wxAnyValueBuffer& dst) const | |
512 | { | |
513 | wxUnusedVar(src); | |
514 | wxUnusedVar(dstType); | |
515 | wxUnusedVar(dst); | |
516 | return false; | |
517 | } | |
518 | ||
519 | #if wxUSE_EXTENDED_RTTI | |
520 | virtual const wxTypeInfo* GetTypeInfo() const | |
521 | { | |
522 | wxFAIL_MSG("Null Type Info not available"); | |
523 | return NULL; | |
524 | } | |
525 | #endif | |
526 | ||
527 | private: | |
528 | }; | |
529 | ||
530 | WX_IMPLEMENT_ANY_VALUE_TYPE(wxAnyValueTypeImpl<wxAnyNullValue>) | |
531 | ||
532 | wxAnyValueType* wxAnyNullValueType = | |
533 | wxAnyValueTypeImpl<wxAnyNullValue>::GetInstance(); | |
534 | ||
535 | #include "wx/listimpl.cpp" | |
536 | WX_DEFINE_LIST(wxAnyList) | |
537 | ||
538 | #endif // wxUSE_ANY |