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Use constexpr or inline in stringbuilder where possible

This commit is contained in:
Martchus 2019-05-11 19:10:36 +02:00
parent f16703ffc0
commit eef6cd2f9e
1 changed files with 17 additions and 17 deletions
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34
conversion/stringbuilder.h
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@ -12,18 +12,18 @@ namespace ConversionUtilities {
/// \cond /// \cond
namespace Helper { namespace Helper {
template <class StringType, Traits::EnableIf<std::is_class<StringType>> * = nullptr> std::size_t computeTupleElementSize(const StringType *str) template <class StringType, Traits::EnableIf<std::is_class<StringType>> * = nullptr> inline std::size_t computeTupleElementSize(const StringType *str)
{ {
return str->size(); return str->size();
} }
template <class StringType, Traits::EnableIf<std::is_class<StringType>> * = nullptr> std::size_t computeTupleElementSize(const StringType &str) template <class StringType, Traits::EnableIf<std::is_class<StringType>> * = nullptr> inline std::size_t computeTupleElementSize(const StringType &str)
{ {
return str.size(); return str.size();
} }
template <class StringType, class CharType, Traits::EnableIf<std::is_same<typename StringType::value_type, CharType>> * = nullptr> template <class StringType, class CharType, Traits::EnableIf<std::is_same<typename StringType::value_type, CharType>> * = nullptr>
std::size_t computeTupleElementSize(const CharType *str) constexpr std::size_t computeTupleElementSize(const CharType *str)
{ {
return std::char_traits<CharType>::length(str); return std::char_traits<CharType>::length(str);
} }
@ -37,7 +37,7 @@ constexpr std::size_t computeTupleElementSize(CharType)
template <class StringType, typename IntegralType, template <class StringType, typename IntegralType,
Traits::EnableIf<Traits::Not<std::is_same<typename StringType::value_type, IntegralType>>, std::is_integral<IntegralType>, Traits::EnableIf<Traits::Not<std::is_same<typename StringType::value_type, IntegralType>>, std::is_integral<IntegralType>,
std::is_unsigned<IntegralType>> * = nullptr> std::is_unsigned<IntegralType>> * = nullptr>
std::size_t computeTupleElementSize(IntegralType number, typename StringType::value_type base = 10) constexpr std::size_t computeTupleElementSize(IntegralType number, typename StringType::value_type base = 10)
{ {
std::size_t size = 0; std::size_t size = 0;
for (auto n = number; n; n /= base, ++size) for (auto n = number; n; n /= base, ++size)
@ -48,7 +48,7 @@ std::size_t computeTupleElementSize(IntegralType number, typename StringType::va
template <class StringType, typename IntegralType, template <class StringType, typename IntegralType,
Traits::EnableIf<Traits::Not<std::is_same<typename StringType::value_type, IntegralType>>, std::is_integral<IntegralType>, Traits::EnableIf<Traits::Not<std::is_same<typename StringType::value_type, IntegralType>>, std::is_integral<IntegralType>,
std::is_signed<IntegralType>> * = nullptr> std::is_signed<IntegralType>> * = nullptr>
std::size_t computeTupleElementSize(IntegralType number, typename StringType::value_type base = 10) constexpr std::size_t computeTupleElementSize(IntegralType number, typename StringType::value_type base = 10)
{ {
std::size_t size = number < 0 ? 1 : 0; std::size_t size = number < 0 ? 1 : 0;
for (auto n = number; n; n /= base, ++size) for (auto n = number; n; n /= base, ++size)
@ -56,24 +56,24 @@ std::size_t computeTupleElementSize(IntegralType number, typename StringType::va
return size; return size;
} }
template <class StringType, Traits::EnableIf<std::is_class<StringType>> * = nullptr> void append(StringType &target, const StringType *str) template <class StringType, Traits::EnableIf<std::is_class<StringType>> * = nullptr> inline void append(StringType &target, const StringType *str)
{ {
target.append(*str); target.append(*str);
} }
template <class StringType, Traits::EnableIf<std::is_class<StringType>> * = nullptr> void append(StringType &target, const StringType &str) template <class StringType, Traits::EnableIf<std::is_class<StringType>> * = nullptr> inline void append(StringType &target, const StringType &str)
{ {
target.append(str); target.append(str);
} }
template <class StringType, class CharType, Traits::EnableIf<std::is_same<typename StringType::value_type, CharType>> * = nullptr> template <class StringType, class CharType, Traits::EnableIf<std::is_same<typename StringType::value_type, CharType>> * = nullptr>
void append(StringType &target, const CharType *str) inline void append(StringType &target, const CharType *str)
{ {
target.append(str); target.append(str);
} }
template <class StringType, class CharType, Traits::EnableIf<std::is_same<typename StringType::value_type, CharType>> * = nullptr> template <class StringType, class CharType, Traits::EnableIf<std::is_same<typename StringType::value_type, CharType>> * = nullptr>
void append(StringType &target, CharType c) inline void append(StringType &target, CharType c)
{ {
target += c; target += c;
} }
@ -81,7 +81,7 @@ void append(StringType &target, CharType c)
template <class StringType, typename IntegralType, template <class StringType, typename IntegralType,
Traits::EnableIf<Traits::Not<std::is_same<typename StringType::value_type, IntegralType>>, std::is_integral<IntegralType>, Traits::EnableIf<Traits::Not<std::is_same<typename StringType::value_type, IntegralType>>, std::is_integral<IntegralType>,
std::is_unsigned<IntegralType>> * = nullptr> std::is_unsigned<IntegralType>> * = nullptr>
void append(StringType &target, IntegralType number, typename StringType::value_type base = 10) inline void append(StringType &target, IntegralType number, typename StringType::value_type base = 10)
{ {
const auto start = target.begin() + target.size(); const auto start = target.begin() + target.size();
do { do {
@ -93,7 +93,7 @@ void append(StringType &target, IntegralType number, typename StringType::value_
template <class StringType, typename IntegralType, template <class StringType, typename IntegralType,
Traits::EnableIf<Traits::Not<std::is_same<typename StringType::value_type, IntegralType>>, std::is_integral<IntegralType>, Traits::EnableIf<Traits::Not<std::is_same<typename StringType::value_type, IntegralType>>, std::is_integral<IntegralType>,
std::is_signed<IntegralType>> * = nullptr> std::is_signed<IntegralType>> * = nullptr>
void append(StringType &target, IntegralType number, typename StringType::value_type base = 10) inline void append(StringType &target, IntegralType number, typename StringType::value_type base = 10)
{ {
if (number < 0) { if (number < 0) {
target += '-'; target += '-';
@ -107,12 +107,12 @@ void append(StringType &target, IntegralType number, typename StringType::value_
} }
template <class StringType, class Tuple, std::size_t N> struct TupleToString { template <class StringType, class Tuple, std::size_t N> struct TupleToString {
static std::size_t precomputeSize(const Tuple &tuple) static inline std::size_t precomputeSize(const Tuple &tuple)
{ {
return TupleToString<StringType, Tuple, N - 1>::precomputeSize(tuple) + computeTupleElementSize<StringType>(std::get<N - 1>(tuple)); return TupleToString<StringType, Tuple, N - 1>::precomputeSize(tuple) + computeTupleElementSize<StringType>(std::get<N - 1>(tuple));
} }
static void append(const Tuple &tuple, StringType &str) static inline void append(const Tuple &tuple, StringType &str)
{ {
TupleToString<StringType, Tuple, N - 1>::append(tuple, str); TupleToString<StringType, Tuple, N - 1>::append(tuple, str);
Helper::append(str, std::get<N - 1>(tuple)); Helper::append(str, std::get<N - 1>(tuple));
@ -120,12 +120,12 @@ template <class StringType, class Tuple, std::size_t N> struct TupleToString {
}; };
template <class StringType, class Tuple> struct TupleToString<StringType, Tuple, 1> { template <class StringType, class Tuple> struct TupleToString<StringType, Tuple, 1> {
static std::size_t precomputeSize(const Tuple &tuple) static inline std::size_t precomputeSize(const Tuple &tuple)
{ {
return computeTupleElementSize<StringType>(std::get<0>(tuple)); return computeTupleElementSize<StringType>(std::get<0>(tuple));
} }
static void append(const Tuple &tuple, StringType &str) static inline void append(const Tuple &tuple, StringType &str)
{ {
Helper::append(str, std::get<0>(tuple)); Helper::append(str, std::get<0>(tuple));
} }
@ -136,7 +136,7 @@ template <class StringType, class Tuple> struct TupleToString<StringType, Tuple,
/*! /*!
* \brief Concatenates all strings hold by the specified \a tuple. * \brief Concatenates all strings hold by the specified \a tuple.
*/ */
template <class StringType = std::string, class... Args> StringType tupleToString(const std::tuple<Args...> &tuple) template <class StringType = std::string, class... Args> inline StringType tupleToString(const std::tuple<Args...> &tuple)
{ {
StringType res; StringType res;
res.reserve(Helper::TupleToString<StringType, decltype(tuple), sizeof...(Args)>::precomputeSize(tuple)); res.reserve(Helper::TupleToString<StringType, decltype(tuple), sizeof...(Args)>::precomputeSize(tuple));
@ -144,7 +144,7 @@ template <class StringType = std::string, class... Args> StringType tupleToStrin
return res; return res;
} }
template <class StringType = std::string, class... Args> constexpr StringType argsToString(Args &&... args) template <class StringType = std::string, class... Args> inline StringType argsToString(Args &&... args)
{ {
return tupleToString(std::make_tuple(args...)); return tupleToString(std::make_tuple(args...));
} }