icuSources/common/unicode/std_string.h

   1 /*
   2 *******************************************************************************
   3 *
   4 *   Copyright (C) 2009-2010, International Business Machines
   5 *   Corporation and others.  All Rights Reserved.
   6 *
   7 *******************************************************************************
   8 *   file name:  std_string.h
   9 *   encoding:   US-ASCII
  10 *   tab size:   8 (not used)
  11 *   indentation:4
  12 *
  13 *   created on: 2009feb19
  14 *   created by: Markus W. Scherer
  15 */
  16
  17 #ifndef __STD_STRING_H__
  18 #define __STD_STRING_H__
  19
  20 /**
  21  * \file
  22  * \brief C++ API: Central ICU header for including the C++ standard &lt;string&gt;
  23  *                 header and for related definitions.
  24  */
  25
  26 #include "unicode/utypes.h"
  27
  28 /**
  29  * \def U_HAVE_STD_STRING
  30  * Define whether the standard C++ (STL) &lt;string&gt; header is available.
  31  * @internal
  32  */
  33 #ifndef U_HAVE_STD_STRING
  34 #define U_HAVE_STD_STRING 1
  35 #endif
  36
  37 #if U_HAVE_STD_STRING
  38
  39 #include <string>
  40
  41 /**
  42  * \def U_STD_NS
  43  * Define the namespace to use for standard C++ (STL) classes.
  44  * Either std or empty.
  45  * @draft ICU 4.2
  46  */
  47
  48 /**
  49  * \def U_STD_NSQ
  50  * Define the namespace qualifier to use for standard C++ (STL) classes.
  51  * Either std:: or empty.
  52  * For example,
  53  *   U_STD_NSQ string StringFromUnicodeString(const UnicodeString &unistr);
  54  * @draft ICU 4.2
  55  */
  56
  57 /**
  58  * \def U_STD_NS_USE
  59  * This is used to specify that the rest of the code uses the
  60  * standard (STL) namespace.
  61  * Either "using namespace std;" or empty.
  62  * @draft ICU 4.2
  63  */
  64 #ifndef U_STD_NSQ
  65 #   if U_HAVE_NAMESPACE
  66 #       define U_STD_NS std
  67 #       define U_STD_NSQ U_STD_NS::
  68 #       define U_STD_NS_USE using namespace U_STD_NS;
  69 #   else
  70 #       define U_STD_NS
  71 #       define U_STD_NSQ
  72 #       define U_STD_NS_USE
  73 #   endif
  74 #endif
  75
  76 #endif  // U_HAVE_STD_STRING
  77
  78 #endif  // __STD_STRING_H__