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Support: add 6-parameter format

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Since we cannot yet use variadic templates, add a specialisation for
6-parameters to format.  This is motivated by a need for the additional
parameter for formatting information for an unwind decoder for Windows on ARM.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@209999 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Saleem Abdulrasool 2014-06-02 01:17:54 +00:00
parent 34d24ba40c
commit 10ecbcbbf0
1 changed files with 39 additions and 0 deletions
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39
include/llvm/Support/Format.h
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@ -170,6 +170,30 @@ public:
}
};
/// format_object6 - This is a templated helper class used by the format
/// function that captures the object to be formated and the format string. When
/// actually printed, this synthesizes the string into a temporary buffer
/// provided and returns whether or not it is big enough.
template <typename T1, typename T2, typename T3, typename T4, typename T5,
typename T6>
class format_object6 : public format_object_base {
T1 Val1;
T2 Val2;
T3 Val3;
T4 Val4;
T5 Val5;
T6 Val6;
public:
format_object6(const char *Fmt, const T1 &Val1, const T2 &Val2,
const T3 &Val3, const T4 &Val4, const T5 &Val5, const T6 &Val6)
: format_object_base(Fmt), Val1(Val1), Val2(Val2), Val3(Val3), Val4(Val4),
Val5(Val5), Val6(Val6) { }
int snprint(char *Buffer, unsigned BufferSize) const override {
return snprintf(Buffer, BufferSize, Fmt, Val1, Val2, Val3, Val4, Val5, Val6);
}
};
/// This is a helper function that is used to produce formatted output.
///
/// This is typically used like:
@ -231,6 +255,21 @@ inline format_object5<T1, T2, T3, T4, T5> format(const char *Fmt,const T1 &Val1,
return format_object5<T1, T2, T3, T4, T5>(Fmt, Val1, Val2, Val3, Val4, Val5);
}
/// This is a helper function that is used to produce formatted output.
///
/// This is typically used like:
/// \code
/// OS << format("%0.4f", myfloat) << '\n';
/// \endcode
template <typename T1, typename T2, typename T3, typename T4, typename T5,
typename T6>
inline format_object6<T1, T2, T3, T4, T5, T6>
format(const char *Fmt, const T1 &Val1, const T2 &Val2, const T3 &Val3,
const T4 &Val4, const T5 &Val5, const T6 &Val6) {
return format_object6<T1, T2, T3, T4, T5, T6>(Fmt, Val1, Val2, Val3, Val4,
Val5, Val6);
}
} // end namespace llvm
#endif