ceph/src/boost/libs/wave/test/testwave/testfiles/t_8_001.cpp

   1 /*=============================================================================
   2     Boost.Wave: A Standard compliant C++ preprocessor library
   3     http://www.boost.org/
   4
   5     Copyright (c) 2020 Jeff Trull. Distributed under the Boost
   6     Software License, Version 1.0. (See accompanying file
   7     LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
   8 =============================================================================*/
   9
  10 //O --c++20
  11 //O -Werror
  12
  13 // __VA_OPT__ examples from the proposal doc P00306
  14 // Those examples have a few weird typos. I've tried to match the
  15 // behavior of gcc in the expected results - JET
  16
  17 #define LOG(msg, ...) printf(msg __VA_OPT__(,) __VA_ARGS__)
  18 #define SDEF(sname, ...) S sname __VA_OPT__(= { __VA_ARGS__ })
  19 #define LOG2(...)                                     \
  20     printf("at line=%d" __VA_OPT__(": "), __LINE__);  \
  21     __VA_OPT__(printf(__VA_ARGS__);)                  \
  22     printf("\n")
  23
  24 //R #line 28 "t_8_001.cpp"
  25 //R printf("hello world\n" );
  26 //R printf("hello world\n" );
  27 //R printf("hello %d\n" , n);
  28 LOG("hello world\n");
  29 LOG("hello world\n", );
  30 LOG("hello %d\n", n);
  31
  32 //R #line 35 "t_8_001.cpp"
  33 //R S foo;
  34 //R S bar = { 1, 2, 3 };
  35 SDEF(foo);
  36 SDEF(bar, 1, 2, 3);
  37
  38 //R #line 43 "t_8_001.cpp"
  39 //R printf("at line=%d" , 43); printf("\n");
  40 // P00306 example suggests the adjacent string literals are concatenated in
  41 // this test case but that's the *compiler's* job:
  42 //R printf("at line=%d" ": ", 44); printf("All well in zone %d", n); printf("\n");
  43 LOG2();
  44 LOG2("All well in zone %d", n);
  45
  46 //H 10: t_8_001.cpp(17): #define
  47 //H 08: t_8_001.cpp(17): LOG(msg, ...)=printf(msg __VA_OPT__(,) __VA_ARGS__)
  48 //H 10: t_8_001.cpp(18): #define
  49 //H 08: t_8_001.cpp(18): SDEF(sname, ...)=S sname __VA_OPT__(= { __VA_ARGS__ })
  50 //H 10: t_8_001.cpp(19): #define
  51 //H 08: t_8_001.cpp(19): LOG2(...)=printf("at line=%d" __VA_OPT__(": "), __LINE__);      __VA_OPT__(printf(__VA_ARGS__);)                      printf("\n")
  52 //H 00: t_8_001.cpp(28): LOG("hello world\n"), [t_8_001.cpp(17): LOG(msg, ...)=printf(msg __VA_OPT__(,) __VA_ARGS__)]
  53 //H 00: t_8_001.cpp(17): __VA_OPT__(,), [<built-in>(1): __VA_OPT__(...)=]
  54 // no variadic args supplied, placemarker produced:
  55 //H 02: §
  56 //H 02: printf("hello world\n" § )
  57 //H 03: printf("hello world\n"  )
  58 //H 00: t_8_001.cpp(29): LOG("hello world\n", §), [t_8_001.cpp(17): LOG(msg, ...)=printf(msg __VA_OPT__(,) __VA_ARGS__)]
  59 //H 00: t_8_001.cpp(17): __VA_OPT__(,), [<built-in>(1): __VA_OPT__(...)=]
  60 // a variadic arg, but it contains a placemarker
  61 // it's a kind of third case - no visible tokens, but not exclusively "whitespace"
  62 //H 02:
  63 //H 02: printf("hello world\n"  )
  64 //H 03: printf("hello world\n"  )
  65 //H 00: t_8_001.cpp(30): LOG("hello %d\n", n), [t_8_001.cpp(17): LOG(msg, ...)=printf(msg __VA_OPT__(,) __VA_ARGS__)]
  66 //H 00: t_8_001.cpp(17): __VA_OPT__(,), [<built-in>(1): __VA_OPT__(...)=]
  67 // a single token for variadic args:
  68 //H 02: ,
  69 //H 02: printf("hello %d\n" ,  n)
  70 //H 03: printf("hello %d\n" ,  n)
  71 //H 00: t_8_001.cpp(35): SDEF(foo), [t_8_001.cpp(18): SDEF(sname, ...)=S sname __VA_OPT__(= { __VA_ARGS__ })]
  72 //H 00: t_8_001.cpp(18): __VA_OPT__(= { __VA_ARGS__ }), [<built-in>(1): __VA_OPT__(...)=]
  73 // no varargs, emit placeholder:
  74 //H 02: §
  75 //H 02: S foo §
  76 //H 03: S foo
  77 //H 00: t_8_001.cpp(36): SDEF(bar, 1, 2, 3), [t_8_001.cpp(18): SDEF(sname, ...)=S sname __VA_OPT__(= { __VA_ARGS__ })]
  78 //H 00: t_8_001.cpp(18): __VA_OPT__(= { __VA_ARGS__ }), [<built-in>(1): __VA_OPT__(...)=]
  79 //H 02: = {  1, 2, 3 }
  80 //H 02: S bar = {  1, 2, 3 }
  81 //H 03: S bar = {  1, 2, 3 }
  82 //H 00: t_8_001.cpp(43): LOG2(§), [t_8_001.cpp(19): LOG2(...)=printf("at line=%d" __VA_OPT__(": "), __LINE__);      __VA_OPT__(printf(__VA_ARGS__);)                      printf("\n")]
  83 //H 00: t_8_001.cpp(20): __VA_OPT__(": "), [<built-in>(1): __VA_OPT__(...)=]
  84 //H 02:
  85 //H 00: t_8_001.cpp(21): __VA_OPT__(printf(__VA_ARGS__);), [<built-in>(1): __VA_OPT__(...)=]
  86 //H 02:
  87 //H 02: printf("at line=%d" , __LINE__);                            printf("\n")
  88 //H 01: <built-in>(1): __LINE__
  89 //H 02: 43
  90 //H 03: 43
  91 //H 03: printf("at line=%d" , 43);                            printf("\n")
  92 //H 00: t_8_001.cpp(44): LOG2("All well in zone %d", n), [t_8_001.cpp(19): LOG2(...)=printf("at line=%d" __VA_OPT__(": "), __LINE__);      __VA_OPT__(printf(__VA_ARGS__);)                      printf("\n")]
  93 //H 00: t_8_001.cpp(20): __VA_OPT__(": "), [<built-in>(1): __VA_OPT__(...)=]
  94 //H 02: ": "
  95 //H 00: t_8_001.cpp(21): __VA_OPT__(printf(__VA_ARGS__);), [<built-in>(1): __VA_OPT__(...)=]
  96 //H 02: printf("All well in zone %d", n);
  97 //H 02: printf("at line=%d" ": ", __LINE__);      printf("All well in zone %d", n);                      printf("\n")
  98 //H 01: <built-in>(1): __LINE__
  99 //H 02: 44
 100 //H 03: 44
 101 //H 03: printf("at line=%d" ": ", 44);      printf("All well in zone %d", n);                      printf("\n")