Dogcows Code - chaz/yoink/blob - src/stlplus/containers/containers_fixes.hpp

   1 #ifndef STLPLUS_CONTAINERS_FIXES
   2 #define STLPLUS_CONTAINERS_FIXES
   3 ////////////////////////////////////////////////////////////////////////////////
   4
   5 //   Author:    Andy Rushton
   6 //   Copyright: (c) Southampton University 1999-2004
   7 //              (c) Andy Rushton           2004-2009
   8 //   License:   BSD License, see ../docs/license.html
   9
  10 //   Contains work arounds for OS or Compiler specific problems with container
  11 //   templates
  12
  13 ////////////////////////////////////////////////////////////////////////////////
  14
  15 ////////////////////////////////////////////////////////////////////////////////
  16 // Unnecessary compiler warnings
  17 ////////////////////////////////////////////////////////////////////////////////
  18
  19 #ifdef _MSC_VER
  20 // Microsoft Visual Studio
  21 // shut up the following irritating warnings
  22 //   4786 - VC6, identifier string exceeded maximum allowable length and was truncated (only affects debugger)
  23 //   4305 - VC6, identifier type was converted to a smaller type
  24 //   4503 - VC6, decorated name was longer than the maximum the compiler allows (only affects debugger)
  25 //   4309 - VC6, type conversion operation caused a constant to exceeded the space allocated for it
  26 //   4290 - VC6, C++ exception specification ignored
  27 //   4800 - VC6, forcing value to bool 'true' or 'false' (performance warning)
  28 //   4355 - VC6, 'this' : used in base member initializer list
  29 //   4675 - VC7.1, "change" in function overload resolution _might_ have altered program
  30 //   4996 - VC8, 'xxxx' was declared deprecated
  31 #pragma warning(disable: 4786 4305 4503 4309 4290 4800 4355 4675 4996)
  32 #endif
  33
  34 #ifdef __BORLANDC__
  35 // Borland
  36 // Shut up the following irritating warnings
  37 //   8026 - Functions with exception specifications are not expanded inline
  38 //   8027 - Functions with xxx are not expanded inline
  39 #pragma warn -8026
  40 #pragma warn -8027
  41 #endif
  42
  43 ////////////////////////////////////////////////////////////////////////////////
  44 // Problems with the typename keyword
  45 ////////////////////////////////////////////////////////////////////////////////
  46
  47 // There are problems with using the 'typename' keyword. Technically, if you
  48 // use a type member of a template class (i.e. a type declared within the
  49 // template class by a local typedef), you need to tell the compiler that it
  50 // is a type name. This is because the compiler cannot work out whether a
  51 // member is a type, a method or a data field at compile time. However,
  52 // support for the typename keyword has traditionally been incomplete in both
  53 // gcc and Visual Studio. I have used macros to try to resolve this issue. The
  54 // macros add the keyword for compiler versions that require it and omit it
  55 // for compiler versions that do not support it
  56
  57 // There are five places where typename keywords cause problems:
  58 //
  59 //   1) in a typedef where a template class's member type is being mapped onto
  60 //      a type definition within another template class or function
  61 //      e.g. template<typename T> fn () {
  62 //             typedef typename someclass<T>::member_type local_type;
  63 //                     ^^^^^^^^
  64 //   2) in a function parameter declaration, with similar rules to the above
  65 //      e.g. template<typename T> fn (typename someclass<T>::member_type)
  66 //                                    ^^^^^^^^
  67 //   3) in instantiating a template, the parameter to the template, with similar rules to the above
  68 //      e.g. template_class<typename someclass<T>::member_type>
  69 //                          ^^^^^^^^
  70 //   4) Return expressions
  71 //      e.g. return typename ntree<T>::const_iterator(this,m_root);
  72 //                  ^^^^^^^^
  73 //   5) Creating temporary objects when passing arguments to a function or constructor
  74 //      e.g. return typename ntree<T>::const_prefix_iterator(typename ntree<T>::const_iterator(this,m_root));
  75 //                                                           ^^^^^^^^
  76 // Note that the typename keyword is only required when the type being referred to is a member of a template class
  77 //
  78 // So far it *seems* as if all compilers either require all of them or none of
  79 // them, so this set of situations can be handled by a single macro
  80
  81 // default values, overridden for individual problem cases below
  82 #define TYPENAME typename
  83
  84 // GCC
  85 //   - pre-version 3 didn't handle typename in any of these cases
  86 //   - version 3 onwards, typename is required for all three cases as per default
  87 #ifdef __GNUC__
  88 #if __GNUC__ < 3
  89 #undef TYPENAME
  90 #define TYPENAME
  91 #endif
  92 #endif
  93
  94 // Visual Studio
  95 //   - version 6 (compiler v.12) cannot handle typename in any of these cases
  96 //   - version 7 (.NET) (compiler v.13) requires a typename in a parameter specification but supports all
  97 //   - version 8 (2005) (compiler v.14) requires parameters and templates, supports all
  98 #ifdef _MSC_VER
  99 #if _MSC_VER <= 1200
 100 #undef TYPENAME
 101 #define TYPENAME
 102 #endif
 103 #endif
 104
 105 // Borland
 106 //   - doesn't handle typename in 5.5, does in 5.82, not sure about other cases
 107 #ifdef __BORLANDC__
 108 #if __BORLANDC__ <= 0x550
 109 #undef TYPENAME
 110 #define TYPENAME
 111 #endif
 112 #endif
 113
 114 ////////////////////////////////////////////////////////////////////////////////
 115 // Member templates
 116 // e.g. a template function in a template class
 117
 118 // Not all compilers support them - this fix can be used to disable member
 119 // templates for compilers that don't. Unfortunately that means that some
 120 // functionality will be missing for those compilers.
 121
 122 #define STLPLUS_MEMBER_TEMPLATES
 123
 124 // Visual Studio v6 (compiler version 12) does not support them
 125 #ifdef _MSC_VER
 126 #if _MSC_VER <= 1200
 127 #undef STLPLUS_MEMBER_TEMPLATES
 128 #endif
 129 #endif
 130
 131 ////////////////////////////////////////////////////////////////////////////////
 132 #endif