boost/boost/preprocessor/tuple/elem.hpp

   1 #ifndef BOOST_PREPROCESSOR_TUPLE_ELEM_HPP
   2 #define BOOST_PREPROCESSOR_TUPLE_ELEM_HPP
   3
   4 /* Copyright (C) 2001
   5  * Housemarque Oy
   6  * http://www.housemarque.com
   7  *
   8  * Permission to copy, use, modify, sell and distribute this software is
   9  * granted provided this copyright notice appears in all copies. This
  10  * software is provided "as is" without express or implied warranty, and
  11  * with no claim as to its suitability for any purpose.
  12  *
  13  * See http://www.boost.org for most recent version.
  14  */
  15
  16 #include <boost/preprocessor/detail/cat.hpp>
  17 #include <boost/preprocessor/detail/expand.hpp>
  18
  19 /** <p>Expands to the <code>INDEX</code>:th element of an <code>SIZE_OF_TUPLE</code>-tuple.</p>
  20
  21 <p>For example,</p>
  22
  23 <pre>
  24 BOOST_PP_TUPLE_ELEM(2,1,(A,B))
  25 </pre>
  26
  27 <p>expands to <code>B</code>.</p>
  28
  29 <h3>See</h3>
  30 <ul>
  31   <li>BOOST_PP_LIMIT_TUPLE</li>
  32 </ul>
  33 */
  34
  35 #if !defined(__MWERKS__) || __MWERKS__ > 0x3001
  36 #  define BOOST_PP_TUPLE_ELEM(SIZE_OF_TUPLE,INDEX,TUPLE)\
  37   BOOST_PP_DETAIL_EXPAND2(\
  38      BOOST_PP_DETAIL_CAT2(BOOST_PP_TUPLE16_ELEM,INDEX)\
  39     ,BOOST_PP_DETAIL_CAT2(BOOST_PP_TUPLE_ELEM_EX,SIZE_OF_TUPLE) TUPLE\
  40   )\
  41 /**/
  42 #else
  43 #  define BOOST_PP_TUPLE_ELEM(SIZE_OF_TUPLE,INDEX,TUPLE)\
  44   BOOST_PP_TUPLE_ELEM_DELAY(SIZE_OF_TUPLE,INDEX,TUPLE)\
  45 /**/
  46 #  define BOOST_PP_TUPLE_ELEM_DELAY(SIZE_OF_TUPLE,INDEX,TUPLE)\
  47   BOOST_PP_DETAIL_CAT2(\
  48      BOOST_PP_TUPLE16_ELEM##INDEX\
  49     ,BOOST_PP_DETAIL_CAT2(BOOST_PP_TUPLE_ELEM_EX##SIZE_OF_TUPLE,TUPLE)\
  50   )\
  51 /**/
  52 #endif
  53
  54 #define BOOST_PP_TUPLE_ELEM_EX1(A) (A,B,C,D,E,F,G,H,I,J,K,L,M,N,O,P)
  55 #define BOOST_PP_TUPLE_ELEM_EX2(A,B) (A,B,C,D,E,F,G,H,I,J,K,L,M,N,O,P)
  56 #define BOOST_PP_TUPLE_ELEM_EX3(A,B,C) (A,B,C,D,E,F,G,H,I,J,K,L,M,N,O,P)
  57 #define BOOST_PP_TUPLE_ELEM_EX4(A,B,C,D) (A,B,C,D,E,F,G,H,I,J,K,L,M,N,O,P)
  58 #define BOOST_PP_TUPLE_ELEM_EX5(A,B,C,D,E) (A,B,C,D,E,F,G,H,I,J,K,L,M,N,O,P)
  59 #define BOOST_PP_TUPLE_ELEM_EX6(A,B,C,D,E,F) (A,B,C,D,E,F,G,H,I,J,K,L,M,N,O,P)
  60 #define BOOST_PP_TUPLE_ELEM_EX7(A,B,C,D,E,F,G) (A,B,C,D,E,F,G,H,I,J,K,L,M,N,O,P)
  61 #define BOOST_PP_TUPLE_ELEM_EX8(A,B,C,D,E,F,G,H) (A,B,C,D,E,F,G,H,I,J,K,L,M,N,O,P)
  62 #define BOOST_PP_TUPLE_ELEM_EX9(A,B,C,D,E,F,G,H,I) (A,B,C,D,E,F,G,H,I,J,K,L,M,N,O,P)
  63 #define BOOST_PP_TUPLE_ELEM_EX10(A,B,C,D,E,F,G,H,I,J) (A,B,C,D,E,F,G,H,I,J,K,L,M,N,O,P)
  64 #define BOOST_PP_TUPLE_ELEM_EX11(A,B,C,D,E,F,G,H,I,J,K) (A,B,C,D,E,F,G,H,I,J,K,L,M,N,O,P)
  65 #define BOOST_PP_TUPLE_ELEM_EX12(A,B,C,D,E,F,G,H,I,J,K,L) (A,B,C,D,E,F,G,H,I,J,K,L,M,N,O,P)
  66 #define BOOST_PP_TUPLE_ELEM_EX13(A,B,C,D,E,F,G,H,I,J,K,L,M) (A,B,C,D,E,F,G,H,I,J,K,L,M,N,O,P)
  67 #define BOOST_PP_TUPLE_ELEM_EX14(A,B,C,D,E,F,G,H,I,J,K,L,M,N) (A,B,C,D,E,F,G,H,I,J,K,L,M,N,O,P)
  68 #define BOOST_PP_TUPLE_ELEM_EX15(A,B,C,D,E,F,G,H,I,J,K,L,M,N,O) (A,B,C,D,E,F,G,H,I,J,K,L,M,N,O,P)
  69 #define BOOST_PP_TUPLE_ELEM_EX16(A,B,C,D,E,F,G,H,I,J,K,L,M,N,O,P) (A,B,C,D,E,F,G,H,I,J,K,L,M,N,O,P)
  70
  71 #define BOOST_PP_TUPLE16_ELEM0(A,B,C,D,E,F,G,H,I,J,K,L,M,N,O,P) A
  72 #define BOOST_PP_TUPLE16_ELEM1(A,B,C,D,E,F,G,H,I,J,K,L,M,N,O,P) B
  73 #define BOOST_PP_TUPLE16_ELEM2(A,B,C,D,E,F,G,H,I,J,K,L,M,N,O,P) C
  74 #define BOOST_PP_TUPLE16_ELEM3(A,B,C,D,E,F,G,H,I,J,K,L,M,N,O,P) D
  75 #define BOOST_PP_TUPLE16_ELEM4(A,B,C,D,E,F,G,H,I,J,K,L,M,N,O,P) E
  76 #define BOOST_PP_TUPLE16_ELEM5(A,B,C,D,E,F,G,H,I,J,K,L,M,N,O,P) F
  77 #define BOOST_PP_TUPLE16_ELEM6(A,B,C,D,E,F,G,H,I,J,K,L,M,N,O,P) G
  78 #define BOOST_PP_TUPLE16_ELEM7(A,B,C,D,E,F,G,H,I,J,K,L,M,N,O,P) H
  79 #define BOOST_PP_TUPLE16_ELEM8(A,B,C,D,E,F,G,H,I,J,K,L,M,N,O,P) I
  80 #define BOOST_PP_TUPLE16_ELEM9(A,B,C,D,E,F,G,H,I,J,K,L,M,N,O,P) J
  81 #define BOOST_PP_TUPLE16_ELEM10(A,B,C,D,E,F,G,H,I,J,K,L,M,N,O,P) K
  82 #define BOOST_PP_TUPLE16_ELEM11(A,B,C,D,E,F,G,H,I,J,K,L,M,N,O,P) L
  83 #define BOOST_PP_TUPLE16_ELEM12(A,B,C,D,E,F,G,H,I,J,K,L,M,N,O,P) M
  84 #define BOOST_PP_TUPLE16_ELEM13(A,B,C,D,E,F,G,H,I,J,K,L,M,N,O,P) N
  85 #define BOOST_PP_TUPLE16_ELEM14(A,B,C,D,E,F,G,H,I,J,K,L,M,N,O,P) O
  86 #define BOOST_PP_TUPLE16_ELEM15(A,B,C,D,E,F,G,H,I,J,K,L,M,N,O,P) P
  87 #endif