namespace llvm {
-/// format_object_base - This is a helper class used for handling formatted
-/// output. It is the abstract base class of a templated derived class.
+/// This is a helper class used for handling formatted output. It is the
+/// abstract base class of a templated derived class.
class format_object_base {
protected:
const char *Fmt;
virtual void home(); // Out of line virtual method.
- /// snprint - Call snprintf() for this object, on the given buffer and size.
+ /// Call snprintf() for this object, on the given buffer and size.
virtual int snprint(char *Buffer, unsigned BufferSize) const = 0;
public:
format_object_base(const char *fmt) : Fmt(fmt) {}
virtual ~format_object_base() {}
- /// print - Format the object into the specified buffer. On success, this
- /// returns the length of the formatted string. If the buffer is too small,
- /// this returns a length to retry with, which will be larger than BufferSize.
+ /// Format the object into the specified buffer. On success, this returns
+ /// the length of the formatted string. If the buffer is too small, this
+ /// returns a length to retry with, which will be larger than BufferSize.
unsigned print(char *Buffer, unsigned BufferSize) const {
assert(BufferSize && "Invalid buffer size!");
// VC++ and old GlibC return negative on overflow, just double the size.
if (N < 0)
- return BufferSize*2;
+ return BufferSize * 2;
- // Other impls yield number of bytes needed, not including the final '\0'.
+ // Other implementations yield number of bytes needed, not including the
+ // final '\0'.
if (unsigned(N) >= BufferSize)
- return N+1;
+ return N + 1;
// Otherwise N is the length of output (not including the final '\0').
return N;
}
};
-/// format_object1 - 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.
+/// These are templated helper classes used by the format function that
+/// capture 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 T>
class format_object1 : public format_object_base {
T Val;
}
};
-/// format_object2 - 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>
class format_object2 : public format_object_base {
T1 Val1;
}
};
-/// format_object3 - 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>
class format_object3 : public format_object_base {
T1 Val1;
}
};
-/// format_object4 - 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>
class format_object4 : public format_object_base {
T1 Val1;
}
};
-/// format_object5 - 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>
class format_object5 : public format_object_base {
T1 Val1;
}
};
-/// 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 {
}
};
-/// This is a helper function that is used to produce formatted output.
+/// These are helper functions used to produce formatted output. They use
+/// template type deduction to construct the appropriate instance of the
+/// format_object class to simplify their construction.
///
/// This is typically used like:
/// \code
/// OS << format("%0.4f", myfloat) << '\n';
/// \endcode
+
template <typename T>
inline format_object1<T> format(const char *Fmt, const T &Val) {
return format_object1<T>(Fmt, Val);
}
-/// 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>
inline format_object2<T1, T2> format(const char *Fmt, const T1 &Val1,
const T2 &Val2) {
return format_object2<T1, T2>(Fmt, Val1, Val2);
}
-/// 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>
inline format_object3<T1, T2, T3> format(const char *Fmt, const T1 &Val1,
const T2 &Val2, const T3 &Val3) {
return format_object3<T1, T2, T3>(Fmt, Val1, Val2, Val3);
}
-/// 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>
inline format_object4<T1, T2, T3, T4> format(const char *Fmt, const T1 &Val1,
const T2 &Val2, const T3 &Val3,
return format_object4<T1, T2, T3, T4>(Fmt, Val1, Val2, Val3, Val4);
}
-/// 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>
inline format_object5<T1, T2, T3, T4, T5> format(const char *Fmt,const T1 &Val1,
const T2 &Val2, const T3 &Val3,
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>
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