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23324ae1 1/////////////////////////////////////////////////////////////////////////////
7c913512 2// Name: debug.h
e54c96f1 3// Purpose: interface of global functions
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4// Author: wxWidgets team
5// RCS-ID: $Id$
6// Licence: wxWindows license
7/////////////////////////////////////////////////////////////////////////////
8
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9/** @ingroup group_funcmacro_debug */
10//@{
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11
12/**
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13 Assert macro. An error message will be generated if the condition is @false in
14 debug mode, but nothing will be done in the release build.
15 Please note that the condition in wxASSERT() should have no side effects
16 because it will not be executed in release mode at all.
7c913512 17
9579c1d7 18 @see wxASSERT_MSG(), wxCOMPILE_TIME_ASSERT()
23324ae1 19
9579c1d7 20 @header{wx/debug.h}
23324ae1 21*/
9579c1d7 22#define wxASSERT( condition )
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23
24/**
25 This macro results in a
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26 @ref overview_wxcompiletimeassert "compile time assertion failure" if the
27 size of the given @c type is less than @c size bits.
28
23324ae1 29 You may use it like this, for example:
4cc4bfaf 30
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31 @code
32 // we rely on the int being able to hold values up to 2^32
9579c1d7 33 wxASSERT_MIN_BITSIZE(int, 32);
7c913512 34
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35 // can't work with the platforms using UTF-8 for wchar_t
36 wxASSERT_MIN_BITSIZE(wchar_t, 16);
23324ae1 37 @endcode
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38
39 @header{wx/debug.h}
23324ae1 40*/
9579c1d7 41#define wxASSERT_MIN_BITSIZE( type, size )
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42
43/**
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44 Assert macro with message. An error message will be generated if the
45 condition is @false.
7c913512 46
e54c96f1 47 @see wxASSERT(), wxCOMPILE_TIME_ASSERT()
23324ae1 48
9579c1d7 49 @header{wx/debug.h}
23324ae1 50*/
9579c1d7 51#define wxASSERT_MSG( condition, message )
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52
53/**
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54 Checks that the condition is @true, returns with the given return value if
55 not (stops execution in debug mode). This check is done even in release
56 mode.
7c913512 57
9579c1d7 58 @header{wx/debug.h}
23324ae1 59*/
9579c1d7 60#define wxCHECK( condition, retValue )
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61
62/**
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63 Checks that the condition is @true, returns with the given return value if
64 not (stops execution in debug mode). This check is done even in release
65 mode.
66
67 This macro may be only used in non-void functions, see also wxCHECK_RET().
68
69 @header{wx/debug.h}
23324ae1 70*/
9579c1d7 71#define wxCHECK_MSG( condition, retValue, message )
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72
73/**
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74 Checks that the condition is @true, and returns if not (stops execution
75 with the given error message in debug mode). This check is done even in
76 release mode.
77
78 This macro should be used in void functions instead of wxCHECK_MSG().
79
80 @header{wx/debug.h}
23324ae1 81*/
9579c1d7 82#define wxCHECK_RET( condition, message )
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83
84/**
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85 Checks that the condition is @true, and if not, it will wxFAIL() and
86 execute the given @c operation if it is not. This is a generalisation of
87 wxCHECK() and may be used when something else than just returning from the
88 function must be done when the @c condition is @false. This check is done
89 even in release mode.
90
91 @header{wx/debug.h}
23324ae1 92*/
9579c1d7 93#define wxCHECK2(condition, operation)
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94
95/**
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96 This is the same as wxCHECK2(), but wxFAIL_MSG() with the specified
97 @c message is called instead of wxFAIL() if the @c condition is @false.
98
99 @header{wx/debug.h}
23324ae1 100*/
9579c1d7 101#define wxCHECK2_MSG( condition, operation, message )
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102
103/**
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104 Using wxCOMPILE_TIME_ASSERT() results in a compilation error if the
105 specified @c condition is @false. The compiler error message should include
106 the @c message identifier - please note that it must be a valid C++
107 identifier and not a string unlike in the other cases.
108
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109 This macro is mostly useful for testing the expressions involving the
110 @c sizeof operator as they can't be tested by the preprocessor but it is
111 sometimes desirable to test them at the compile time.
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112
113 Note that this macro internally declares a struct whose name it tries to
114 make unique by using the @c __LINE__ in it but it may still not work if you
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115 use it on the same line in two different source files. In this case you may
116 either change the line in which either of them appears on or use the
e54c96f1 117 wxCOMPILE_TIME_ASSERT2() macro.
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118
119 Also note that Microsoft Visual C++ has a bug which results in compiler
120 errors if you use this macro with 'Program Database For Edit And Continue'
121 (@c /ZI) option, so you shouldn't use it ('Program Database' (@c /Zi) is ok
122 though) for the code making use of this macro.
7c913512 123
e54c96f1 124 @see wxASSERT_MSG(), wxASSERT_MIN_BITSIZE()
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125
126 @header{wx/debug.h}
127*/
128#define wxCOMPILE_TIME_ASSERT( condition, message )
129
130/**
131 This macro is identical to wxCOMPILE_TIME_ASSERT() except that it allows
132 you to specify a unique @c name for the struct internally defined by this
133 macro to avoid getting the compilation errors described for
134 wxCOMPILE_TIME_ASSERT().
135
136 @header{wx/debug.h}
137*/
138#define wxCOMPILE_TIME_ASSERT2(condition, message, name)
139
140/**
141 Will always generate an assert error if this code is reached (in debug
142 mode).
143
144 @see wxFAIL_MSG()
145
146 @header{wx/debug.h}
147*/
148#define wxFAIL()
149
150/**
151 Will always generate an assert error with specified message if this code is
152 reached (in debug mode).
153
154 This macro is useful for marking unreachable" code areas, for example it
155 may be used in the "default:" branch of a switch statement if all possible
156 cases are processed above.
157
158 @see wxFAIL()
159
160 @header{wx/debug.h}
161*/
162#define wxFAIL_MSG( message )
163
164/**
165 Returns @true if the program is running under debugger, @false otherwise.
166
167 Please note that this function is currently only implemented for Win32 and
168 Mac builds using CodeWarrior and always returns @false elsewhere.
169
170 @header{wx/debug.h}
23324ae1 171*/
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172bool wxIsDebuggerRunning();
173
174/**
175 This function is called whenever one of debugging macros fails (i.e.
176 condition is @false in an assertion). It is only defined in the debug mode,
177 in release builds the wxCHECK() failures don't result in anything.
178
179 To override the default behaviour in the debug builds which is to show the
180 user a dialog asking whether he wants to abort the program, continue or
181 continue ignoring any subsequent assert failures, you may override
182 wxApp::OnAssertFailure() which is called by this function if the global
183 application object exists.
184
185 @header{wx/debug.h}
186*/
187void wxOnAssert( const char* fileName,
188 int lineNumber,
189 const char* function,
190 const char* condition,
191 const char* message = NULL );
192
193/**
194 In debug mode (when @c __WXDEBUG__ is defined) this function generates a
195 debugger exception meaning that the control is passed to the debugger if
196 one is attached to the process. Otherwise the program just terminates
197 abnormally. In release mode this function does nothing.
198
199 @header{wx/debug.h}
200*/
201void wxTrap();
202
203//@}
23324ae1 204
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205
206
207/** @ingroup group_funcmacro_misc */
208//@{
209
210/**
211 This macro expands to the name of the current function if the compiler
212 supports any of @c __FUNCTION__, @c __func__ or equivalent variables or
213 macros or to @NULL if none of them is available.
214
215 @header{wx/debug.h}
216*/
217#define __WXFUNCTION__
218
219//@}
220