text: #define SWIFT_NAME(X) __attribute__((swift_name(#X)))
  
  #ifndef SWIFT_ENUM_EXTRA
  #  define SWIFT_ENUM_EXTRA
  #endif
  
  #ifndef SWIFT_ENUM
  #  define SWIFT_ENUM(_name)    \
    enum _name _name;            \
    enum __attribute__((enum_extensibility(open))) SWIFT_ENUM_EXTRA _name
  #endif
  
  // Renaming global variables.
  int SNFoo SWIFT_NAME(Bar);
  
  // Renaming tags and fields.
  struct SWIFT_NAME(SomeStruct) SNSomeStruct {
    double X SWIFT_NAME(x);
  };
  
  // Renaming C functions
  struct SNSomeStruct SNMakeSomeStruct(double X, double Y) SWIFT_NAME(makeSomeStruct(x:y:));
  
  struct SNSomeStruct SNMakeSomeStructForX(double X) SWIFT_NAME(makeSomeStruct(x:));
  
  // Renaming typedefs.
  typedef int SNIntegerType SWIFT_NAME(MyInt);
  
  // Renaming enumerations.
  SWIFT_ENUM(SNColorChoice) {
    SNColorRed SWIFT_NAME(Rouge),
    SNColorGreen,
    SNColorBlue
  };
  
  // swift_private attribute
  void SNTransposeInPlace(struct SNSomeStruct *value) __attribute__((swift_private));
  
  typedef struct {
    double x, y, z;
  } SNPoint SWIFT_NAME(Point);
  
  // Importing a value into a member.
  extern double DefaultXValue __attribute__((swift_name("SomeStruct.defaultX")));
  
  // Importing a function as a method.
  struct SNSomeStruct SNAdding(struct SNSomeStruct *value, double x) SWIFT_NAME(SomeStruct.adding(self:x:));
  
  // Importing a function as an initializer.
  struct SNSomeStruct SNCreate(double x) SWIFT_NAME(SomeStruct.init(theX:));
  
  // Importing a function as a static property getter.
  struct SNSomeStruct SNSomeStructGetDefault(void) SWIFT_NAME(getter:SomeStruct.defaultValue());
  
  // Importing a function as a static property setter.
  void SNSomeStructSetDefault(struct SNSomeStruct value) SWIFT_NAME(setter:SomeStruct.defaultValue(_:));
  
  // Importing a function as an instance property getter.
  double SNSomeStructGetFoo(struct SNSomeStruct s) SWIFT_NAME(getter:SomeStruct.foo(self:));
  
  // Importing a function as an instance property setter.
  void SNSomeStructSetFoo(struct SNSomeStruct s, double value) SWIFT_NAME(setter:SomeStruct.foo(self:_:));
  