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add string shift_concat operations

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bolero-MURAKAMI 2016-03-21 14:38:59 +09:00
parent a1be640b2f
commit c9cce4582e
4 changed files with 328 additions and 20 deletions
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80
sprout/string/string.hpp
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@ -288,9 +288,16 @@ namespace sprout {
}
SPROUT_CXX14_CONSTEXPR void lengthcheck(size_type n) const {
if (n > static_size) {
throw std::length_error("basic_string<>: length error");
throw std::length_error("basic_string<>: length exceeded");
}
}
SPROUT_CXX14_CONSTEXPR void put_terminator() {
traits_type::assign(begin() + impl_.len, static_size - impl_.len, value_type());
}
SPROUT_CXX14_CONSTEXPR void put_terminator(size_type n) {
impl_.len = n;
put_terminator();
}
public:
// construct/copy/destroy:
SPROUT_CONSTEXPR basic_string() SPROUT_DEFAULTED_DEFAULT_CONSTRUCTOR_DECL
@ -484,8 +491,7 @@ namespace sprout {
if (n > size()) {
traits_type::assign(end(), n - size(), c);
}
traits_type::assign(begin() + n, static_size - n, value_type());
impl_.len = n;
put_terminator(n);
}
SPROUT_CXX14_CONSTEXPR void
resize(size_type n) {
@ -493,8 +499,7 @@ namespace sprout {
}
SPROUT_CXX14_CONSTEXPR void
clear() SPROUT_NOEXCEPT {
traits_type::assign(begin(), static_size, value_type());
impl_.len = 0;
put_terminator(0);
}
SPROUT_CONSTEXPR bool
empty() const SPROUT_NOEXCEPT {
@ -557,10 +562,7 @@ namespace sprout {
for (size_type i = 0; i < n; ++i) {
traits_type::assign(impl_.elems[i], s[i]);
}
for (size_type i = n; i < static_size; ++i) {
traits_type::assign(impl_.elems[i], value_type());
}
impl_.len = n;
put_terminator(n);
return *this;
}
SPROUT_CXX14_CONSTEXPR basic_string&
@ -571,8 +573,7 @@ namespace sprout {
assign(size_type n, value_type c) {
maxcheck(n);
traits_type::assign(begin(), n, c);
traits_type::assign(begin() + n, static_size - n, value_type());
impl_.len = n;
put_terminator(n);
return *this;
}
template<typename InputIterator>
@ -582,10 +583,7 @@ namespace sprout {
for (; n < static_size || first != last; ++n, ++first) {
traits_type::assign(impl_.elems[n], *first);
}
for (size_type i = n; i < static_size; ++i) {
traits_type::assign(impl_.elems[i], value_type());
}
impl_.len = n;
put_terminator(n);
return *this;
}
SPROUT_CXX14_CONSTEXPR void
@ -787,7 +785,6 @@ namespace sprout {
operator=(StringConstIterator rhs) {
return assign(rhs);
}
// modifiers (for string iterator):
template<typename StringConstIterator>
SPROUT_CXX14_CONSTEXPR typename std::enable_if<
@ -799,10 +796,7 @@ namespace sprout {
for (size_type i = 0; i < n; ++i) {
traits_type::assign(impl_.elems[i], s[i]);
}
for (size_type i = n; i < static_size; ++i) {
traits_type::assign(impl_.elems[i], value_type());
}
impl_.len = n;
put_terminator(n);
return *this;
}
template<typename StringConstIterator>
@ -979,6 +973,52 @@ namespace sprout {
return sprout::distance(begin(), p);
}
#endif
SPROUT_CXX14_CONSTEXPR basic_string& operator<<=(T const& rhs) {
lengthcheck(size() + 1);
traits_type::assign(end(), 1, rhs);
put_terminator(impl_.len + 1);
return *this;
}
template<std::size_t M>
SPROUT_CXX14_CONSTEXPR basic_string& operator<<=(T const (& rhs)[M]) {
std::size_t rsize = traits_type::length(rhs, M - 1);
lengthcheck(size() + rsize);
traits_type::copy(end(), rhs, rsize);
put_terminator(impl_.len + rsize);
return *this;
}
template<std::size_t N2>
SPROUT_CXX14_CONSTEXPR basic_string& operator<<=(basic_string<T, N2> const& rhs) {
lengthcheck(size() + rhs.size());
traits_type::copy(end(), rhs.begin(), rhs.size());
put_terminator(impl_.len + rhs.size());
return *this;
}
SPROUT_CXX14_CONSTEXPR basic_string& operator>>=(T const& rhs) {
lengthcheck(size() + 1);
traits_type::move(begin() + 1, begin(), size());
traits_type::assign(begin(), 1, rhs);
put_terminator(impl_.len + 1);
return *this;
}
template<std::size_t M>
SPROUT_CXX14_CONSTEXPR basic_string& operator>>=(T const (& rhs)[M]) {
std::size_t rsize = traits_type::length(rhs, M - 1);
lengthcheck(size() + rsize);
traits_type::move(begin() + rsize, begin(), size());
traits_type::copy(begin(), rhs, rsize);
put_terminator(impl_.len + rsize);
return *this;
}
template<std::size_t N2>
SPROUT_CXX14_CONSTEXPR basic_string& operator>>=(basic_string<T, N2> const& rhs) {
lengthcheck(size() + rhs.size());
traits_type::move(begin() + rhs.size(), begin(), size());
traits_type::copy(begin(), rhs.begin(), rhs.size());
put_terminator(impl_.len + rhs.size());
return *this;
}
};
template<typename T, std::size_t N, typename Traits>
SPROUT_CONSTEXPR_OR_CONST typename sprout::basic_string<T, N, Traits>::size_type sprout::basic_string<T, N, Traits>::npos;