Question

我正在尝试在Poco源代码中找到Poco ByteOrder :: ToNetwork（），在搜索整个源代码后，我能找到的是：

    static Int16 toNetwork(Int16 value);
    static UInt16 toNetwork (UInt16 value);
    static Int32 toNetwork(Int32 value);
    static UInt32 toNetwork (UInt32 value);
#if defined(POCO_HAVE_INT64)
    static Int64 toNetwork(Int64 value);
    static UInt64 toNetwork (UInt64 value);
#endif

在ByteOrder.h中

实际执行在哪里？无法在github上找到它：

https://github.com/pocoproject/poco/search?utf8=%E2%9C%93&q=tonetwork

Answer 1

Poco的耐力转换由ByteOrder.h中的宏POCO_IMPLEMENT_BYTEORDER_BIG和POCO_IMPLEMENT_BYTEORDER_LIT定义。在大端系统上，这些宏分别扩展为POCO_IMPLEMENT_BYTEORDER_NOOP和POCO_IMPLEMENT_BYTEORDER_FLIP，而小端系统则相反。

//
// some macro trickery to automate the method implementation
//
#define POCO_IMPLEMENT_BYTEORDER_NOOP_(op, type) \
     inline type ByteOrder::op(type value)        \
     {                                                      \
          return value;                                \
     }
#define POCO_IMPLEMENT_BYTEORDER_FLIP_(op, type) \
     inline type ByteOrder::op(type value)        \
     {                                                      \
          return flipBytes(value);                \
     }


#if defined(POCO_HAVE_INT64)
     #define POCO_IMPLEMENT_BYTEORDER_NOOP(op) \
          POCO_IMPLEMENT_BYTEORDER_NOOP_(op, Int16)    \
          POCO_IMPLEMENT_BYTEORDER_NOOP_(op, UInt16)   \
          POCO_IMPLEMENT_BYTEORDER_NOOP_(op, Int32)    \
          POCO_IMPLEMENT_BYTEORDER_NOOP_(op, UInt32)   \
          POCO_IMPLEMENT_BYTEORDER_NOOP_(op, Int64)    \
          POCO_IMPLEMENT_BYTEORDER_NOOP_(op, UInt64)
     #define POCO_IMPLEMENT_BYTEORDER_FLIP(op) \
          POCO_IMPLEMENT_BYTEORDER_FLIP_(op, Int16)    \
          POCO_IMPLEMENT_BYTEORDER_FLIP_(op, UInt16)   \
          POCO_IMPLEMENT_BYTEORDER_FLIP_(op, Int32)    \
          POCO_IMPLEMENT_BYTEORDER_FLIP_(op, UInt32)   \
          POCO_IMPLEMENT_BYTEORDER_FLIP_(op, Int64)    \
          POCO_IMPLEMENT_BYTEORDER_FLIP_(op, UInt64)
#else
     #define POCO_IMPLEMENT_BYTEORDER_NOOP(op) \
          POCO_IMPLEMENT_BYTEORDER_NOOP_(op, Int16)    \
          POCO_IMPLEMENT_BYTEORDER_NOOP_(op, UInt16)   \
          POCO_IMPLEMENT_BYTEORDER_NOOP_(op, Int32)    \
          POCO_IMPLEMENT_BYTEORDER_NOOP_(op, UInt32)
     #define POCO_IMPLEMENT_BYTEORDER_FLIP(op) \
          POCO_IMPLEMENT_BYTEORDER_FLIP_(op, Int16)    \
          POCO_IMPLEMENT_BYTEORDER_FLIP_(op, UInt16)   \
          POCO_IMPLEMENT_BYTEORDER_FLIP_(op, Int32)    \
          POCO_IMPLEMENT_BYTEORDER_FLIP_(op, UInt32)
#endif


#if defined(POCO_ARCH_BIG_ENDIAN)
     #define POCO_IMPLEMENT_BYTEORDER_BIG POCO_IMPLEMENT_BYTEORDER_NOOP
     #define POCO_IMPLEMENT_BYTEORDER_LIT POCO_IMPLEMENT_BYTEORDER_FLIP
#else
     #define POCO_IMPLEMENT_BYTEORDER_BIG POCO_IMPLEMENT_BYTEORDER_FLIP
     #define POCO_IMPLEMENT_BYTEORDER_LIT POCO_IMPLEMENT_BYTEORDER_NOOP
#endif


POCO_IMPLEMENT_BYTEORDER_BIG(toBigEndian)
POCO_IMPLEMENT_BYTEORDER_BIG(fromBigEndian)
POCO_IMPLEMENT_BYTEORDER_BIG(toNetwork)
POCO_IMPLEMENT_BYTEORDER_BIG(fromNetwork)
POCO_IMPLEMENT_BYTEORDER_LIT(toLittleEndian)
POCO_IMPLEMENT_BYTEORDER_LIT(fromLittleEndian)

Poco ByteOrder :: ToNetwork（）在哪里定义？

1 个答案: