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Add a macro to disallow the copy constructor and operator= functions.

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This commit is contained in:
Victor Zverovich 2014-04-27 09:46:56 -07:00
parent 5dee290482
commit 83a7b79c2d
2 changed files with 10 additions and 11 deletions
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3
format-test.cc
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@ -1634,8 +1634,7 @@ TEST(FormatIntTest, FormatDec) {
class File {
private:
int fd_;
File(const File &);
void operator=(const File &);
FMT_DISALLOW_COPY_AND_ASSIGN(File);
public:
File(int fd) : fd_(fd) {}
~File() { close(fd_); }

18
format.h
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@ -99,6 +99,12 @@
# define FMT_NOEXCEPT(expr)
#endif
// A macro to disallow the copy constructor and operator= functions
// This should be used in the private: declarations for a class
#define FMT_DISALLOW_COPY_AND_ASSIGN(TypeName) \
TypeName(const TypeName&); \
void operator=(const TypeName&)
#if _MSC_VER
# pragma warning(push)
# pragma warning(disable: 4521) // 'class' : multiple copy constructors specified
@ -165,9 +171,7 @@ class Array {
}
}
// Do not implement!
Array(const Array &);
void operator=(const Array &);
FMT_DISALLOW_COPY_AND_ASSIGN(Array);
public:
Array() : size_(0), capacity_(SIZE), ptr_(data_) {}
@ -1266,9 +1270,7 @@ class BasicFormatter {
//
// This is done because BasicFormatter objects should normally exist
// only as temporaries returned by one of the formatting functions.
// Do not implement.
BasicFormatter(const BasicFormatter &);
BasicFormatter& operator=(const BasicFormatter &);
FMT_DISALLOW_COPY_AND_ASSIGN(BasicFormatter);
protected:
const Char *TakeFormatString() {
@ -1405,9 +1407,7 @@ class Formatter : private Action, public BasicFormatter<Char> {
BasicWriter<Char> writer_;
bool inactive_;
// Forbid copying other than from a temporary. Do not implement.
Formatter(const Formatter &);
Formatter& operator=(const Formatter &);
FMT_DISALLOW_COPY_AND_ASSIGN(Formatter);
public:
/**