4 // Fraunhofer Institute for Open Communication Systems (FOKUS)
6 // The contents of this file are subject to the Fraunhofer FOKUS Public License
7 // Version 1.0 (the "License"); you may not use this file except in compliance
8 // with the License. You may obtain a copy of the License at
9 // http://senf.berlios.de/license.html
11 // The Fraunhofer FOKUS Public License Version 1.0 is based on,
12 // but modifies the Mozilla Public License Version 1.1.
13 // See the full license text for the amendments.
15 // Software distributed under the License is distributed on an "AS IS" basis,
16 // WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
17 // for the specific language governing rights and limitations under the License.
19 // The Original Code is Fraunhofer FOKUS code.
21 // The Initial Developer of the Original Code is Fraunhofer-Gesellschaft e.V.
22 // (registered association), Hansastraße 27 c, 80686 Munich, Germany.
23 // All Rights Reserved.
26 // Stefan Bund <g0dil@berlios.de>
29 \brief Tags public header */
31 #ifndef HH_SENF_Utils_Tags_
32 #define HH_SENF_Utils_Tags_ 1
37 //-/////////////////////////////////////////////////////////////////////////////////////////////////
39 /** \defgroup utils_tags Type tags
41 Type tags are used to select variants of a member, function, template or constructor. A Type tag
42 always has only a single value which is passed wherever a parameter of that tag's type is
45 The argument which expects a type-tag value will always be declared in such a way, that it is
46 optional. Examples of type tag use are:
49 result = object.find<Foo>(); // This call may throw
50 result = object.find<Foo>(senf::nothrow); // This call will not throw
53 Of course, this only works with objects which explicitly declare, that they take an optional
54 senf::NoThrow_t type parameter.
59 /** \brief Type tag selecting non-throwing variant of something
61 This tag is used to select the non-throwing variant of a member, function, template or
62 constructor. An argument of this type is always declared in such a way, that it is
65 There is only a single value for this type: \ref senf::nothrow which is the value to pass
66 wherever an (optional) senf::NoThrow_t parameter is requested.
70 enum NoThrow_t { nothrow };
72 /** \brief Type tag selecting uninitialized variant of something
74 This tag is used to select the unititialized variant of a member, function, template or
75 constructor (mostly a constructor). An argument of this type is always declared in such a
76 way, that it is optional.
78 There is only a single value for this type: \ref senf::noinit which is the value to pass
79 wherever an (optional) senf::NoInit_t parameter is requested.
83 enum NoInit_t { noinit };
87 //-/////////////////////////////////////////////////////////////////////////////////////////////////
98 // c-file-style: "senf"
99 // indent-tabs-mode: nil
100 // ispell-local-dictionary: "american"
101 // compile-command: "scons -u test"