* [buf+begin, buf+bufLen).
*/
template <class Uint>
-size_t uintToHex(char* buffer, size_t bufLen, Uint v,
- const char (&repr)[256][2]) {
+size_t
+uintToHex(char* buffer, size_t bufLen, Uint v, const char (&repr)[256][2]) {
// 'v >>= 7, v >>= 1' is no more than a work around to get rid of shift size
// warning when Uint = uint8_t (it's false as v >= 256 implies sizeof(v) > 1).
for (; !less_than<unsigned, 256>(v); v >>= 7, v >>= 1) {
return bufLen;
}
-} // namespace detail
+} // namespace detail
template <class Derived, bool containerMode, class... Args>
-BaseFormatter<Derived, containerMode, Args...>::BaseFormatter(StringPiece str,
- Args&&... args)
+BaseFormatter<Derived, containerMode, Args...>::BaseFormatter(
+ StringPiece str,
+ Args&&... args)
: str_(str),
values_(FormatValue<typename std::decay<Args>::type>(
std::forward<Args>(args))...) {
- static_assert(!containerMode || sizeof...(Args) == 1,
- "Exactly one argument required in container mode");
+ static_assert(
+ !containerMode || sizeof...(Args) == 1,
+ "Exactly one argument required in container mode");
}
template <class Derived, bool containerMode, class... Args>
template <class Output>
-void BaseFormatter<Derived, containerMode, Args...>::operator()(Output& out)
- const {
+void BaseFormatter<Derived, containerMode, Args...>::operator()(
+ Output& out) const {
// Copy raw string (without format specifiers) to output;
// not as simple as we'd like, as we still need to translate "}}" to "}"
// and throw if we see any lone "}"
- auto outputString = [&out] (StringPiece s) {
+ auto outputString = [&out](StringPiece s) {
auto p = s.begin();
auto end = s.end();
while (p != end) {
p = q + 1;
int argIndex = 0;
- auto piece = arg.splitKey<true>(); // empty key component is okay
- if (containerMode) { // static
- arg.enforce(arg.width != FormatArg::kDynamicWidth,
- "dynamic field width not supported in vformat()");
+ auto piece = arg.splitKey<true>(); // empty key component is okay
+ if (containerMode) { // static
+ arg.enforce(
+ arg.width != FormatArg::kDynamicWidth,
+ "dynamic field width not supported in vformat()");
if (piece.empty()) {
arg.setNextIntKey(nextArg++);
hasDefaultArgIndex = true;
} else {
if (piece.empty()) {
if (arg.width == FormatArg::kDynamicWidth) {
- arg.enforce(arg.widthIndex == FormatArg::kNoIndex,
- "cannot provide width arg index without value arg index");
+ arg.enforce(
+ arg.widthIndex == FormatArg::kNoIndex,
+ "cannot provide width arg index without value arg index");
int sizeArg = nextArg++;
arg.width = getSizeArg(size_t(sizeArg), arg);
}
hasDefaultArgIndex = true;
} else {
if (arg.width == FormatArg::kDynamicWidth) {
- arg.enforce(arg.widthIndex != FormatArg::kNoIndex,
- "cannot provide value arg index without width arg index");
+ arg.enforce(
+ arg.widthIndex != FormatArg::kNoIndex,
+ "cannot provide value arg index without width arg index");
arg.width = getSizeArg(size_t(arg.widthIndex), arg);
}
}
template <class Derived, bool containerMode, class... Args>
-void writeTo(FILE* fp,
- const BaseFormatter<Derived, containerMode, Args...>& formatter) {
- auto writer = [fp] (StringPiece sp) {
+void writeTo(
+ FILE* fp,
+ const BaseFormatter<Derived, containerMode, Args...>& formatter) {
+ auto writer = [fp](StringPiece sp) {
size_t n = fwrite(sp.data(), 1, sp.size(), fp);
if (n < sp.size()) {
throwSystemError("Formatter writeTo", "fwrite failed");
char padBuf[padBufSize];
// Output padding, no more than padBufSize at once
- auto pad = [&padBuf, &cb, padBufSize] (int chars) {
+ auto pad = [&padBuf, &cb, padBufSize](int chars) {
while (chars) {
int n = std::min(chars, padBufSize);
cb(StringPiece(padBuf, size_t(n)));
if (arg.width != FormatArg::kDefaultWidth &&
val.size() < static_cast<size_t>(arg.width)) {
char fill = arg.fill == FormatArg::kDefaultFill ? ' ' : arg.fill;
- int padChars = static_cast<int> (arg.width - val.size());
+ int padChars = static_cast<int>(arg.width - val.size());
memset(padBuf, fill, size_t(std::min(padBufSize, padChars)));
switch (arg.align) {
- case FormatArg::Align::DEFAULT:
- case FormatArg::Align::LEFT:
- padRemaining = padChars;
- break;
- case FormatArg::Align::CENTER:
- pad(padChars / 2);
- padRemaining = padChars - padChars / 2;
- break;
- case FormatArg::Align::RIGHT:
- case FormatArg::Align::PAD_AFTER_SIGN:
- pad(padChars);
- break;
- default:
- abort();
- break;
+ case FormatArg::Align::DEFAULT:
+ case FormatArg::Align::LEFT:
+ padRemaining = padChars;
+ break;
+ case FormatArg::Align::CENTER:
+ pad(padChars / 2);
+ padRemaining = padChars - padChars / 2;
+ break;
+ case FormatArg::Align::RIGHT:
+ case FormatArg::Align::PAD_AFTER_SIGN:
+ pad(padChars);
+ break;
+ default:
+ abort();
+ break;
}
}
}
template <class FormatCallback>
-void formatNumber(StringPiece val, int prefixLen, FormatArg& arg,
- FormatCallback& cb) {
+void formatNumber(
+ StringPiece val,
+ int prefixLen,
+ FormatArg& arg,
+ FormatCallback& cb) {
// precision means something different for numbers
arg.precision = FormatArg::kDefaultPrecision;
if (arg.align == FormatArg::Align::DEFAULT) {
format_value::formatString(val, arg, cb);
}
-template <class FormatCallback,
- class Derived,
- bool containerMode,
- class... Args>
+template <
+ class FormatCallback,
+ class Derived,
+ bool containerMode,
+ class... Args>
void formatFormatter(
const BaseFormatter<Derived, containerMode, Args...>& formatter,
FormatArg& arg,
arg.precision == FormatArg::kDefaultPrecision) {
// nothing to do
formatter(cb);
- } else if (arg.align != FormatArg::Align::LEFT &&
- arg.align != FormatArg::Align::DEFAULT) {
+ } else if (
+ arg.align != FormatArg::Align::LEFT &&
+ arg.align != FormatArg::Align::DEFAULT) {
// We can only avoid creating a temporary string if we align left,
// as we'd need to know the size beforehand otherwise
format_value::formatString(formatter.fbstr(), arg, cb);
} else {
- auto fn = [&arg, &cb] (StringPiece sp) mutable {
+ auto fn = [&arg, &cb](StringPiece sp) mutable {
int sz = static_cast<int>(sp.size());
if (arg.precision != FormatArg::kDefaultPrecision) {
sz = std::min(arg.precision, sz);
}
}
-} // namespace format_value
+} // namespace format_value
// Definitions for default FormatValue classes
// Integral types (except bool)
template <class T>
class FormatValue<
- T, typename std::enable_if<
- std::is_integral<T>::value &&
- !std::is_same<T, bool>::value>::type>
- {
+ T,
+ typename std::enable_if<
+ std::is_integral<T>::value && !std::is_same<T, bool>::value>::type> {
public:
- explicit FormatValue(T val) : val_(val) { }
+ explicit FormatValue(T val) : val_(val) {}
T getValue() const {
return val_;
} else {
uval = static_cast<UT>(val_);
switch (arg.sign) {
- case FormatArg::Sign::PLUS_OR_MINUS:
- sign = '+';
- break;
- case FormatArg::Sign::SPACE_OR_MINUS:
- sign = ' ';
- break;
- default:
- sign = '\0';
- break;
+ case FormatArg::Sign::PLUS_OR_MINUS:
+ sign = '+';
+ break;
+ case FormatArg::Sign::SPACE_OR_MINUS:
+ sign = ' ';
+ break;
+ default:
+ sign = '\0';
+ break;
}
}
} else {
uval = static_cast<UT>(val_);
sign = '\0';
- arg.enforce(arg.sign == FormatArg::Sign::DEFAULT,
- "sign specifications not allowed for unsigned values");
+ arg.enforce(
+ arg.sign == FormatArg::Sign::DEFAULT,
+ "sign specifications not allowed for unsigned values");
}
// max of:
int prefixLen = 0;
switch (presentation) {
- case 'n': {
- arg.enforce(!arg.basePrefix,
- "base prefix not allowed with '", presentation,
- "' specifier");
-
- arg.enforce(!arg.thousandsSeparator,
- "cannot use ',' with the '", presentation,
- "' specifier");
-
- valBufBegin = valBuf + 3; // room for sign and base prefix
+ case 'n': {
+ arg.enforce(
+ !arg.basePrefix,
+ "base prefix not allowed with '",
+ presentation,
+ "' specifier");
+
+ arg.enforce(
+ !arg.thousandsSeparator,
+ "cannot use ',' with the '",
+ presentation,
+ "' specifier");
+
+ valBufBegin = valBuf + 3; // room for sign and base prefix
#if defined(__ANDROID__)
- int len = snprintf(valBufBegin, (valBuf + valBufSize) - valBufBegin,
- "%" PRIuMAX, static_cast<uintmax_t>(uval));
+ int len = snprintf(
+ valBufBegin,
+ (valBuf + valBufSize) - valBufBegin,
+ "%" PRIuMAX,
+ static_cast<uintmax_t>(uval));
#else
- int len = snprintf(
- valBufBegin,
- size_t((valBuf + valBufSize) - valBufBegin),
- "%ju",
- static_cast<uintmax_t>(uval));
+ int len = snprintf(
+ valBufBegin,
+ size_t((valBuf + valBufSize) - valBufBegin),
+ "%ju",
+ static_cast<uintmax_t>(uval));
#endif
- // valBufSize should always be big enough, so this should never
- // happen.
- assert(len < valBuf + valBufSize - valBufBegin);
- valBufEnd = valBufBegin + len;
- break;
- }
- case 'd':
- arg.enforce(!arg.basePrefix,
- "base prefix not allowed with '", presentation,
- "' specifier");
- valBufBegin = valBuf + 3; // room for sign and base prefix
-
- // Use uintToBuffer, faster than sprintf
- valBufEnd = valBufBegin + uint64ToBufferUnsafe(uval, valBufBegin);
- if (arg.thousandsSeparator) {
- detail::insertThousandsGroupingUnsafe(valBufBegin, &valBufEnd);
- }
- break;
- case 'c':
- arg.enforce(!arg.basePrefix,
- "base prefix not allowed with '", presentation,
- "' specifier");
- arg.enforce(!arg.thousandsSeparator,
- "thousands separator (',') not allowed with '",
- presentation, "' specifier");
- valBufBegin = valBuf + 3;
- *valBufBegin = static_cast<char>(uval);
- valBufEnd = valBufBegin + 1;
- break;
- case 'o':
- case 'O':
- arg.enforce(!arg.thousandsSeparator,
- "thousands separator (',') not allowed with '",
- presentation, "' specifier");
- valBufEnd = valBuf + valBufSize - 1;
- valBufBegin = valBuf + detail::uintToOctal(valBuf, valBufSize - 1, uval);
- if (arg.basePrefix) {
- *--valBufBegin = '0';
- prefixLen = 1;
- }
- break;
- case 'x':
- arg.enforce(!arg.thousandsSeparator,
- "thousands separator (',') not allowed with '",
- presentation, "' specifier");
- valBufEnd = valBuf + valBufSize - 1;
- valBufBegin = valBuf + detail::uintToHexLower(valBuf, valBufSize - 1,
- uval);
- if (arg.basePrefix) {
- *--valBufBegin = 'x';
- *--valBufBegin = '0';
- prefixLen = 2;
- }
- break;
- case 'X':
- arg.enforce(!arg.thousandsSeparator,
- "thousands separator (',') not allowed with '",
- presentation, "' specifier");
- valBufEnd = valBuf + valBufSize - 1;
- valBufBegin = valBuf + detail::uintToHexUpper(valBuf, valBufSize - 1,
- uval);
- if (arg.basePrefix) {
- *--valBufBegin = 'X';
- *--valBufBegin = '0';
- prefixLen = 2;
- }
- break;
- case 'b':
- case 'B':
- arg.enforce(!arg.thousandsSeparator,
- "thousands separator (',') not allowed with '",
- presentation, "' specifier");
- valBufEnd = valBuf + valBufSize - 1;
- valBufBegin = valBuf + detail::uintToBinary(valBuf, valBufSize - 1,
- uval);
- if (arg.basePrefix) {
- *--valBufBegin = presentation; // 0b or 0B
- *--valBufBegin = '0';
- prefixLen = 2;
+ // valBufSize should always be big enough, so this should never
+ // happen.
+ assert(len < valBuf + valBufSize - valBufBegin);
+ valBufEnd = valBufBegin + len;
+ break;
}
- break;
- default:
- arg.error("invalid specifier '", presentation, "'");
+ case 'd':
+ arg.enforce(
+ !arg.basePrefix,
+ "base prefix not allowed with '",
+ presentation,
+ "' specifier");
+ valBufBegin = valBuf + 3; // room for sign and base prefix
+
+ // Use uintToBuffer, faster than sprintf
+ valBufEnd = valBufBegin + uint64ToBufferUnsafe(uval, valBufBegin);
+ if (arg.thousandsSeparator) {
+ detail::insertThousandsGroupingUnsafe(valBufBegin, &valBufEnd);
+ }
+ break;
+ case 'c':
+ arg.enforce(
+ !arg.basePrefix,
+ "base prefix not allowed with '",
+ presentation,
+ "' specifier");
+ arg.enforce(
+ !arg.thousandsSeparator,
+ "thousands separator (',') not allowed with '",
+ presentation,
+ "' specifier");
+ valBufBegin = valBuf + 3;
+ *valBufBegin = static_cast<char>(uval);
+ valBufEnd = valBufBegin + 1;
+ break;
+ case 'o':
+ case 'O':
+ arg.enforce(
+ !arg.thousandsSeparator,
+ "thousands separator (',') not allowed with '",
+ presentation,
+ "' specifier");
+ valBufEnd = valBuf + valBufSize - 1;
+ valBufBegin =
+ valBuf + detail::uintToOctal(valBuf, valBufSize - 1, uval);
+ if (arg.basePrefix) {
+ *--valBufBegin = '0';
+ prefixLen = 1;
+ }
+ break;
+ case 'x':
+ arg.enforce(
+ !arg.thousandsSeparator,
+ "thousands separator (',') not allowed with '",
+ presentation,
+ "' specifier");
+ valBufEnd = valBuf + valBufSize - 1;
+ valBufBegin =
+ valBuf + detail::uintToHexLower(valBuf, valBufSize - 1, uval);
+ if (arg.basePrefix) {
+ *--valBufBegin = 'x';
+ *--valBufBegin = '0';
+ prefixLen = 2;
+ }
+ break;
+ case 'X':
+ arg.enforce(
+ !arg.thousandsSeparator,
+ "thousands separator (',') not allowed with '",
+ presentation,
+ "' specifier");
+ valBufEnd = valBuf + valBufSize - 1;
+ valBufBegin =
+ valBuf + detail::uintToHexUpper(valBuf, valBufSize - 1, uval);
+ if (arg.basePrefix) {
+ *--valBufBegin = 'X';
+ *--valBufBegin = '0';
+ prefixLen = 2;
+ }
+ break;
+ case 'b':
+ case 'B':
+ arg.enforce(
+ !arg.thousandsSeparator,
+ "thousands separator (',') not allowed with '",
+ presentation,
+ "' specifier");
+ valBufEnd = valBuf + valBufSize - 1;
+ valBufBegin =
+ valBuf + detail::uintToBinary(valBuf, valBufSize - 1, uval);
+ if (arg.basePrefix) {
+ *--valBufBegin = presentation; // 0b or 0B
+ *--valBufBegin = '0';
+ prefixLen = 2;
+ }
+ break;
+ default:
+ arg.error("invalid specifier '", presentation, "'");
}
if (sign) {
++prefixLen;
}
- format_value::formatNumber(StringPiece(valBufBegin, valBufEnd), prefixLen,
- arg, cb);
+ format_value::formatNumber(
+ StringPiece(valBufBegin, valBufEnd), prefixLen, arg, cb);
}
private:
template <>
class FormatValue<bool> {
public:
- explicit FormatValue(bool val) : val_(val) { }
+ explicit FormatValue(bool val) : val_(val) {}
template <class FormatCallback>
void format(FormatArg& arg, FormatCallback& cb) const {
if (arg.presentation == FormatArg::kDefaultPresentation) {
arg.validate(FormatArg::Type::OTHER);
format_value::formatString(val_ ? "true" : "false", arg, cb);
- } else { // number
+ } else { // number
FormatValue<int>(val_).format(arg, cb);
}
}
template <>
class FormatValue<double> {
public:
- explicit FormatValue(double val) : val_(val) { }
+ explicit FormatValue(double val) : val_(val) {}
template <class FormatCallback>
void format(FormatArg& arg, FormatCallback& cb) const {
template <>
class FormatValue<float> {
public:
- explicit FormatValue(float val) : val_(val) { }
+ explicit FormatValue(float val) : val_(val) {}
template <class FormatCallback>
void format(FormatArg& arg, FormatCallback& cb) const {
// Sring-y types (implicitly convertible to StringPiece, except char*)
template <class T>
class FormatValue<
- T, typename std::enable_if<
- (!std::is_pointer<T>::value ||
- !std::is_same<char, typename std::decay<
- typename std::remove_pointer<T>::type>::type>::value) &&
- std::is_convertible<T, StringPiece>::value>::type>
- {
+ T,
+ typename std::enable_if<
+ (!std::is_pointer<T>::value ||
+ !std::is_same<
+ char,
+ typename std::decay<typename std::remove_pointer<T>::type>::type>::
+ value) &&
+ std::is_convertible<T, StringPiece>::value>::type> {
public:
- explicit FormatValue(StringPiece val) : val_(val) { }
+ explicit FormatValue(StringPiece val) : val_(val) {}
template <class FormatCallback>
void format(FormatArg& arg, FormatCallback& cb) const {
if (arg.keyEmpty()) {
arg.validate(FormatArg::Type::OTHER);
- arg.enforce(arg.presentation == FormatArg::kDefaultPresentation ||
- arg.presentation == 's',
- "invalid specifier '", arg.presentation, "'");
+ arg.enforce(
+ arg.presentation == FormatArg::kDefaultPresentation ||
+ arg.presentation == 's',
+ "invalid specifier '",
+ arg.presentation,
+ "'");
format_value::formatString(val_, arg, cb);
} else {
FormatValue<char>(val_.at(size_t(arg.splitIntKey()))).format(arg, cb);
template <>
class FormatValue<std::nullptr_t> {
public:
- explicit FormatValue(std::nullptr_t) { }
+ explicit FormatValue(std::nullptr_t) {}
template <class FormatCallback>
void format(FormatArg& arg, FormatCallback& cb) const {
arg.validate(FormatArg::Type::OTHER);
- arg.enforce(arg.presentation == FormatArg::kDefaultPresentation,
- "invalid specifier '", arg.presentation, "'");
+ arg.enforce(
+ arg.presentation == FormatArg::kDefaultPresentation,
+ "invalid specifier '",
+ arg.presentation,
+ "'");
format_value::formatString("(null)", arg, cb);
}
};
// Partial specialization of FormatValue for char*
template <class T>
class FormatValue<
- T*,
- typename std::enable_if<
- std::is_same<char, typename std::decay<T>::type>::value>::type>
- {
+ T*,
+ typename std::enable_if<
+ std::is_same<char, typename std::decay<T>::type>::value>::type> {
public:
- explicit FormatValue(T* val) : val_(val) { }
+ explicit FormatValue(T* val) : val_(val) {}
template <class FormatCallback>
void format(FormatArg& arg, FormatCallback& cb) const {
FormatValue<StringPiece>(val_).format(arg, cb);
}
} else {
- FormatValue<typename std::decay<T>::type>(
- val_[arg.splitIntKey()]).format(arg, cb);
+ FormatValue<typename std::decay<T>::type>(val_[arg.splitIntKey()])
+ .format(arg, cb);
}
}
// Partial specialization of FormatValue for void*
template <class T>
class FormatValue<
- T*,
- typename std::enable_if<
- std::is_same<void, typename std::decay<T>::type>::value>::type>
- {
+ T*,
+ typename std::enable_if<
+ std::is_same<void, typename std::decay<T>::type>::value>::type> {
public:
- explicit FormatValue(T* val) : val_(val) { }
+ explicit FormatValue(T* val) : val_(val) {}
template <class FormatCallback>
void format(FormatArg& arg, FormatCallback& cb) const {
} else {
// Print as a pointer, in hex.
arg.validate(FormatArg::Type::OTHER);
- arg.enforce(arg.presentation == FormatArg::kDefaultPresentation,
- "invalid specifier '", arg.presentation, "'");
+ arg.enforce(
+ arg.presentation == FormatArg::kDefaultPresentation,
+ "invalid specifier '",
+ arg.presentation,
+ "'");
arg.basePrefix = true;
arg.presentation = 'x';
if (arg.align == FormatArg::Align::DEFAULT) {
arg.align = FormatArg::Align::LEFT;
}
- FormatValue<uintptr_t>(
- reinterpret_cast<uintptr_t>(val_)).doFormat(arg, cb);
+ FormatValue<uintptr_t>(reinterpret_cast<uintptr_t>(val_))
+ .doFormat(arg, cb);
}
}
class TryFormatValue {
public:
template <class FormatCallback>
- static void formatOrFail(T& /* value */,
- FormatArg& arg,
- FormatCallback& /* cb */) {
+ static void
+ formatOrFail(T& /* value */, FormatArg& arg, FormatCallback& /* cb */) {
arg.error("No formatter available for this type");
}
};
template <class T>
class TryFormatValue<
- T,
- typename std::enable_if<
- 0 < sizeof(FormatValue<typename std::decay<T>::type>)>::type>
- {
+ T,
+ typename std::enable_if<
+ 0 < sizeof(FormatValue<typename std::decay<T>::type>)>::type> {
public:
template <class FormatCallback>
static void formatOrFail(T& value, FormatArg& arg, FormatCallback& cb) {
// Partial specialization of FormatValue for other pointers
template <class T>
class FormatValue<
- T*,
- typename std::enable_if<
- !std::is_same<char, typename std::decay<T>::type>::value &&
- !std::is_same<void, typename std::decay<T>::type>::value>::type>
- {
+ T*,
+ typename std::enable_if<
+ !std::is_same<char, typename std::decay<T>::type>::value &&
+ !std::is_same<void, typename std::decay<T>::type>::value>::type> {
public:
- explicit FormatValue(T* val) : val_(val) { }
+ explicit FormatValue(T* val) : val_(val) {}
template <class FormatCallback>
void format(FormatArg& arg, FormatCallback& cb) const {
TryFormatValue<T>::formatOrFail(val_[arg.splitIntKey()], arg, cb);
}
}
+
private:
T* val_;
};
// std::array
template <class T, size_t N>
struct IndexableTraits<std::array<T, N>>
- : public IndexableTraitsSeq<std::array<T, N>> {
-};
+ : public IndexableTraitsSeq<std::array<T, N>> {};
// std::vector
template <class T, class A>
struct IndexableTraits<std::vector<T, A>>
- : public IndexableTraitsSeq<std::vector<T, A>> {
-};
+ : public IndexableTraitsSeq<std::vector<T, A>> {};
// std::deque
template <class T, class A>
struct IndexableTraits<std::deque<T, A>>
- : public IndexableTraitsSeq<std::deque<T, A>> {
-};
+ : public IndexableTraitsSeq<std::deque<T, A>> {};
// std::map with integral keys
template <class K, class T, class C, class A>
struct IndexableTraits<
- std::map<K, T, C, A>,
- typename std::enable_if<std::is_integral<K>::value>::type>
- : public IndexableTraitsAssoc<std::map<K, T, C, A>> {
-};
+ std::map<K, T, C, A>,
+ typename std::enable_if<std::is_integral<K>::value>::type>
+ : public IndexableTraitsAssoc<std::map<K, T, C, A>> {};
// std::unordered_map with integral keys
template <class K, class T, class H, class E, class A>
struct IndexableTraits<
- std::unordered_map<K, T, H, E, A>,
- typename std::enable_if<std::is_integral<K>::value>::type>
- : public IndexableTraitsAssoc<std::unordered_map<K, T, H, E, A>> {
-};
+ std::unordered_map<K, T, H, E, A>,
+ typename std::enable_if<std::is_integral<K>::value>::type>
+ : public IndexableTraitsAssoc<std::unordered_map<K, T, H, E, A>> {};
-} // namespace detail
+} // namespace detail
// Partial specialization of FormatValue for integer-indexable containers
template <class T>
-class FormatValue<
- T,
- typename detail::IndexableTraits<T>::enabled> {
+class FormatValue<T, typename detail::IndexableTraits<T>::enabled> {
public:
- explicit FormatValue(const T& val) : val_(val) { }
+ explicit FormatValue(const T& val) : val_(val) {}
template <class FormatCallback>
void format(FormatArg& arg, FormatCallback& cb) const {
FormatValue<typename std::decay<
- typename detail::IndexableTraits<T>::value_type>::type>(
- detail::IndexableTraits<T>::at(
- val_, arg.splitIntKey())).format(arg, cb);
+ typename detail::IndexableTraits<T>::value_type>::type>(
+ detail::IndexableTraits<T>::at(val_, arg.splitIntKey()))
+ .format(arg, cb);
}
private:
template <class Container, class Value>
class FormatValue<
- detail::DefaultValueWrapper<Container, Value>,
- typename detail::IndexableTraits<Container>::enabled> {
+ detail::DefaultValueWrapper<Container, Value>,
+ typename detail::IndexableTraits<Container>::enabled> {
public:
explicit FormatValue(const detail::DefaultValueWrapper<Container, Value>& val)
- : val_(val) { }
+ : val_(val) {}
template <class FormatCallback>
void format(FormatArg& arg, FormatCallback& cb) const {
FormatValue<typename std::decay<
- typename detail::IndexableTraits<Container>::value_type>::type>(
- detail::IndexableTraits<Container>::at(
- val_.container,
- arg.splitIntKey(),
- val_.defaultValue)).format(arg, cb);
+ typename detail::IndexableTraits<Container>::value_type>::type>(
+ detail::IndexableTraits<Container>::at(
+ val_.container, arg.splitIntKey(), val_.defaultValue))
+ .format(arg, cb);
}
private:
// Define enabled, key_type, convert from StringPiece to the key types
// that we support
-template <class T> struct KeyFromStringPiece;
+template <class T>
+struct KeyFromStringPiece;
// std::string
template <>
};
// Base class for associative types keyed by strings
-template <class T> struct KeyableTraitsAssoc : public FormatTraitsBase {
+template <class T>
+struct KeyableTraitsAssoc : public FormatTraitsBase {
typedef typename T::key_type key_type;
typedef typename T::value_type::second_type value_type;
static const value_type& at(const T& map, StringPiece key) {
return map.at(KeyFromStringPiece<key_type>::convert(key));
}
- static const value_type& at(const T& map, StringPiece key,
- const value_type& dflt) {
+ static const value_type&
+ at(const T& map, StringPiece key, const value_type& dflt) {
auto pos = map.find(KeyFromStringPiece<key_type>::convert(key));
return pos != map.end() ? pos->second : dflt;
}
// Define enabled, key_type, value_type, at() for supported string-keyed
// types
-template <class T, class Enabled=void> struct KeyableTraits;
+template <class T, class Enabled = void>
+struct KeyableTraits;
// std::map with string key
template <class K, class T, class C, class A>
struct KeyableTraits<
- std::map<K, T, C, A>,
- typename KeyFromStringPiece<K>::enabled>
- : public KeyableTraitsAssoc<std::map<K, T, C, A>> {
-};
+ std::map<K, T, C, A>,
+ typename KeyFromStringPiece<K>::enabled>
+ : public KeyableTraitsAssoc<std::map<K, T, C, A>> {};
// std::unordered_map with string key
template <class K, class T, class H, class E, class A>
struct KeyableTraits<
- std::unordered_map<K, T, H, E, A>,
- typename KeyFromStringPiece<K>::enabled>
- : public KeyableTraitsAssoc<std::unordered_map<K, T, H, E, A>> {
-};
+ std::unordered_map<K, T, H, E, A>,
+ typename KeyFromStringPiece<K>::enabled>
+ : public KeyableTraitsAssoc<std::unordered_map<K, T, H, E, A>> {};
-} // namespace detail
+} // namespace detail
// Partial specialization of FormatValue for string-keyed containers
template <class T>
-class FormatValue<
- T,
- typename detail::KeyableTraits<T>::enabled> {
+class FormatValue<T, typename detail::KeyableTraits<T>::enabled> {
public:
- explicit FormatValue(const T& val) : val_(val) { }
+ explicit FormatValue(const T& val) : val_(val) {}
template <class FormatCallback>
void format(FormatArg& arg, FormatCallback& cb) const {
FormatValue<typename std::decay<
- typename detail::KeyableTraits<T>::value_type>::type>(
- detail::KeyableTraits<T>::at(
- val_, arg.splitKey())).format(arg, cb);
+ typename detail::KeyableTraits<T>::value_type>::type>(
+ detail::KeyableTraits<T>::at(val_, arg.splitKey()))
+ .format(arg, cb);
}
private:
template <class Container, class Value>
class FormatValue<
- detail::DefaultValueWrapper<Container, Value>,
- typename detail::KeyableTraits<Container>::enabled> {
+ detail::DefaultValueWrapper<Container, Value>,
+ typename detail::KeyableTraits<Container>::enabled> {
public:
explicit FormatValue(const detail::DefaultValueWrapper<Container, Value>& val)
- : val_(val) { }
+ : val_(val) {}
template <class FormatCallback>
void format(FormatArg& arg, FormatCallback& cb) const {
FormatValue<typename std::decay<
- typename detail::KeyableTraits<Container>::value_type>::type>(
- detail::KeyableTraits<Container>::at(
- val_.container,
- arg.splitKey(),
- val_.defaultValue)).format(arg, cb);
+ typename detail::KeyableTraits<Container>::value_type>::type>(
+ detail::KeyableTraits<Container>::at(
+ val_.container, arg.splitKey(), val_.defaultValue))
+ .format(arg, cb);
}
private:
template <class A, class B>
class FormatValue<std::pair<A, B>> {
public:
- explicit FormatValue(const std::pair<A, B>& val) : val_(val) { }
+ explicit FormatValue(const std::pair<A, B>& val) : val_(val) {}
template <class FormatCallback>
void format(FormatArg& arg, FormatCallback& cb) const {
int key = arg.splitIntKey();
switch (key) {
- case 0:
- FormatValue<typename std::decay<A>::type>(val_.first).format(arg, cb);
- break;
- case 1:
- FormatValue<typename std::decay<B>::type>(val_.second).format(arg, cb);
- break;
- default:
- arg.error("invalid index for pair");
+ case 0:
+
FormatValue<typename std::decay<A>::type>(val_.first).format(arg, cb);
+ break;
+ case 1:
+ FormatValue<typename std::decay<B>::type>(val_.second).format(arg, cb);
+ break;
+ default:
+ arg.error("invalid index for pair");
}
}
template <class... Args>
class FormatValue<std::tuple<Args...>> {
typedef std::tuple<Args...> Tuple;
+
public:
- explicit FormatValue(const Tuple& val) : val_(val) { }
+ explicit FormatValue(const Tuple& val) : val_(val) {}
template <class FormatCallback>
void format(FormatArg& arg, FormatCallback& cb) const {
static constexpr size_t valueCount = std::tuple_size<Tuple>::value;
template <size_t K, class Callback>
- typename std::enable_if<K == valueCount>::type doFormatFrom(
- size_t i, FormatArg& arg, Callback& /* cb */) const {
+ typename std::enable_if<K == valueCount>::type
+ doFormatFrom(size_t i, FormatArg& arg, Callback& /* cb */) const {
arg.enforce("tuple index out of range, max=", i);
}
doFormatFrom(size_t i, FormatArg& arg, Callback& cb) const {
if (i == K) {
FormatValue<typename std::decay<
- typename std::tuple_element<K, Tuple>::type>::type>(
- std::get<K>(val_)).format(arg, cb);
+ typename std::tuple_element<K, Tuple>::type>::type>(std::get<K>(val_))
+ .format(arg, cb);
} else {
- doFormatFrom<K+1>(i, arg, cb);
+ doFormatFrom<K + 1>(i, arg, cb);
}
}
};
// Partial specialization of FormatValue for nested Formatters
-template <bool containerMode, class... Args,
- template <bool, class...> class F>
-class FormatValue<F<containerMode, Args...>,
- typename std::enable_if<detail::IsFormatter<
- F<containerMode, Args...>>::value>::type> {
+template <bool containerMode, class... Args, template <bool, class...> class F>
+class FormatValue<
+ F<containerMode, Args...>,
+ typename std::enable_if<
+ detail::IsFormatter<F<containerMode, Args...>>::value>::type> {
typedef typename F<containerMode, Args...>::BaseType FormatterValue;
public:
- explicit FormatValue(const FormatterValue& f) : f_(f) { }
+ explicit FormatValue(const FormatterValue& f) : f_(f) {}
template <class FormatCallback>
void format(FormatArg& arg, FormatCallback& cb) const {
format_value::formatFormatter(f_, arg, cb);
}
+
private:
const FormatterValue& f_;
};
*/
template <class Tgt, class Derived, bool containerMode, class... Args>
typename std::enable_if<IsSomeString<Tgt>::value>::type toAppend(
- const BaseFormatter<Derived, containerMode, Args...>& value, Tgt* result) {
+ const BaseFormatter<Derived, containerMode, Args...>& value,
+ Tgt* result) {
value.appendTo(*result);
}
-} // namespace folly
+} // namespace folly
#pragma GCC diagnostic pop
#include <type_traits>
#include <folly/Conv.h>
+#include <folly/FormatArg.h>
#include <folly/Range.h>
-#include <folly/Traits.h>
#include <folly/String.h>
-#include <folly/FormatArg.h>
+#include <folly/Traits.h>
// Ignore shadowing warnings within this file, so includers can use -Wshadow.
#pragma GCC diagnostic push
namespace folly {
// forward declarations
-template <bool containerMode, class... Args> class Formatter;
+template <bool containerMode, class... Args>
+class Formatter;
template <class... Args>
Formatter<false, Args...> format(StringPiece fmt, Args&&... args);
template <class C>
Formatter<true, C> vformat(StringPiece fmt, C&& container);
-template <class T, class Enable=void> class FormatValue;
+template <class T, class Enable = void>
+class FormatValue;
// meta-attribute to identify formatters in this sea of template weirdness
namespace detail {
* Append to a string.
*/
template <class Str>
- typename std::enable_if<IsSomeString<Str>::value>::type
- appendTo(Str& str) const {
- auto appender = [&str] (StringPiece s) { str.append(s.data(), s.size()); };
+ typename std::enable_if<IsSomeString<Str>::value>::type appendTo(
+ Str& str) const {
+ auto appender = [&str](StringPiece s) { str.append(s.data(), s.size()); };
(*this)(appender);
}
typedef BaseFormatter BaseType;
private:
- typedef std::tuple<FormatValue<
- typename std::decay<Args>::type>...> ValueTuple;
+ typedef std::tuple<FormatValue<typename std::decay<Args>::type>...>
+ ValueTuple;
static constexpr size_t valueCount = std::tuple_size<ValueTuple>::value;
template <size_t K, class Callback>
if (i == K) {
static_cast<const Derived*>(this)->template doFormatArg<K>(arg, cb);
} else {
- doFormatFrom<K+1>(i, arg, cb);
+ doFormatFrom<K + 1>(i, arg, cb);
}
}
}
template <size_t K>
- typename std::enable_if<K == valueCount, int>::type
- getSizeArgFrom(size_t i, const FormatArg& arg) const {
+ typename std::enable_if<K == valueCount, int>::type getSizeArgFrom(
+ size_t i,
+ const FormatArg& arg) const {
arg.error("argument index out of range, max=", i);
}
template <class T>
- typename std::enable_if<std::is_integral<T>::value &&
- !std::is_same<T, bool>::value, int>::type
+ typename std::enable_if<
+ std::is_integral<T>::value && !std::is_same<T, bool>::value,
+ int>::type
getValue(const FormatValue<T>& format, const FormatArg&) const {
return static_cast<int>(format.getValue());
}
template <class T>
- typename std::enable_if<!std::is_integral<T>::value ||
- std::is_same<T, bool>::value, int>::type
+ typename std::enable_if<
+ !std::is_integral<T>::value || std::is_same<T, bool>::value,
+ int>::type
getValue(const FormatValue<T>&, const FormatArg& arg) const {
arg.error("dynamic field width argument must be integral");
}
template <size_t K>
- typename std::enable_if<K < valueCount, int>::type
- getSizeArgFrom(size_t i, const FormatArg& arg) const {
+ typename std::enable_if <
+ K<valueCount, int>::type getSizeArgFrom(size_t i, const FormatArg& arg)
+ const {
if (i == K) {
return getValue(std::get<K>(values_), arg);
}
- return getSizeArgFrom<K+1>(i, arg);
+ return getSizeArgFrom<K + 1>(i, arg);
}
int getSizeArg(size_t i, const FormatArg& arg) const {
};
template <bool containerMode, class... Args>
-class Formatter : public BaseFormatter<Formatter<containerMode, Args...>,
- containerMode,
- Args...> {
+class Formatter : public BaseFormatter<
+ Formatter<containerMode, Args...>,
+ containerMode,
+ Args...> {
private:
explicit Formatter(StringPiece& str, Args&&... args)
- : BaseFormatter<Formatter<containerMode, Args...>,
- containerMode,
- Args...>(str, std::forward<Args>(args)...) {}
+ : BaseFormatter<
+ Formatter<containerMode, Args...>,
+ containerMode,
+ Args...>(str, std::forward<Args>(args)...) {}
template <size_t K, class Callback>
void doFormatArg(FormatArg& arg, Callback& cb) const {
std::get<K>(this->values_).format(arg, cb);
}
- friend class BaseFormatter<Formatter<containerMode, Args...>,
- containerMode,
- Args...>;
+ friend class BaseFormatter<
+ Formatter<containerMode, Args...>,
+ containerMode,
+ Args...>;
template <class... A>
friend Formatter<false, A...> format(StringPiece fmt, A&&... arg);
/**
* Formatter objects can be written to streams.
*/
-template<bool containerMode, class... Args>
-std::ostream& operator<<(std::ostream& out,
- const Formatter<containerMode, Args...>& formatter) {
+template <bool containerMode, class... Args>
+std::ostream& operator<<(
+ std::ostream& out,
+ const Formatter<containerMode, Args...>& formatter) {
auto writer = [&out](StringPiece sp) {
out.write(sp.data(), std::streamsize(sp.size()));
};
* Formatter objects can be written to stdio FILEs.
*/
template <class Derived, bool containerMode, class... Args>
-void writeTo(FILE* fp,
- const BaseFormatter<Derived, containerMode, Args...>& formatter);
+void writeTo(
+ FILE* fp,
+ const BaseFormatter<Derived, containerMode, Args...>& formatter);
/**
* Create a formatter object.
*/
template <class... Args>
Formatter<false, Args...> format(StringPiece fmt, Args&&... args) {
- return Formatter<false, Args...>(
- fmt, std::forward<Args>(args)...);
+ return Formatter<false, Args...>(fmt, std::forward<Args>(args)...);
}
/**
*/
template <class Container>
Formatter<true, Container> vformat(StringPiece fmt, Container&& container) {
- return Formatter<true, Container>(
- fmt, std::forward<Container>(container));
+ return Formatter<true, Container>(fmt, std::forward<Container>(container));
}
/**
* format("[no_such_key"], defaulted(map, 42)) -> 42
*/
namespace detail {
-template <class Container, class Value> struct DefaultValueWrapper {
+template <class Container, class Value>
+struct DefaultValueWrapper {
DefaultValueWrapper(const Container& container, const Value& defaultValue)
- : container(container),
- defaultValue(defaultValue) {
- }
+ : container(container), defaultValue(defaultValue) {}
const Container& container;
const Value& defaultValue;
};
-} // namespace
+} // namespace
template <class Container, class Value>
-detail::DefaultValueWrapper<Container, Value>
-defaulted(const Container& c, const Value& v) {
+detail::DefaultValueWrapper<Container, Value> defaulted(
+ const Container& c,
+ const Value& v) {
return detail::DefaultValueWrapper<Container, Value>(c, v);
}
* field width")
*/
template <class FormatCallback>
-void formatNumber(StringPiece val, int prefixLen, FormatArg& arg,
- FormatCallback& cb);
-
+void formatNumber(
+ StringPiece val,
+ int prefixLen,
+ FormatArg& arg,
+ FormatCallback& cb);
/**
* Format a Formatter object recursively. Behaves just like
* formatString(fmt.str(), arg, cb); but avoids creating a temporary
* string if possible.
*/
-template <class FormatCallback,
- class Derived,
- bool containerMode,
- class... Args>
+template <
+ class FormatCallback,
+ class Derived,
+ bool containerMode,
+ class... Args>
void formatFormatter(
const BaseFormatter<Derived, containerMode, Args...>& formatter,
FormatArg& arg,
FormatCallback& cb);
-} // namespace format_value
+} // namespace format_value
/*
* Specialize folly::FormatValue for your type.
return formatChecked(fmt, std::forward<Args>(args)...).str();
}
template <class Container>
-Formatter<true, Container> vformatChecked(StringPiece fmt,
- Container&& container) {
+Formatter<true, Container> vformatChecked(
+ StringPiece fmt,
+ Container&& container) {
return vformat(fmt, std::forward<Container>(container));
}
template <class Container>
vformatChecked(fmt, std::forward<Container>(container)).appendTo(*out);
}
-} // namespace folly
+} // namespace folly
#include <folly/Format-inl.h>
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