Chris@16: /*
Chris@16:    Copyright (c) Marshall Clow 2012-2012.
Chris@16: 
Chris@16:    Distributed under the Boost Software License, Version 1.0. (See accompanying
Chris@16:    file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
Chris@16: 
Chris@16:     For more information, see http://www.boost.org
Chris@16: 
Chris@16:     Based on the StringRef implementation in LLVM (http://llvm.org) and
Chris@16:     N3422 by Jeffrey Yasskin
Chris@16:         http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2012/n3442.html
Chris@16: 
Chris@16: */
Chris@16: 
Chris@16: #ifndef BOOST_STRING_REF_HPP
Chris@16: #define BOOST_STRING_REF_HPP
Chris@16: 
Chris@16: #include <boost/config.hpp>
Chris@16: #include <boost/detail/workaround.hpp>
Chris@16: #include <boost/utility/string_ref_fwd.hpp>
Chris@16: #include <boost/throw_exception.hpp>
Chris@16: 
Chris@16: #include <cstddef>
Chris@16: #include <stdexcept>
Chris@16: #include <algorithm>
Chris@16: #include <iterator>
Chris@16: #include <string>
Chris@16: #include <iosfwd>
Chris@16: 
Chris@16: namespace boost {
Chris@16: 
Chris@16:     namespace detail {
Chris@16:     //  A helper functor because sometimes we don't have lambdas
Chris@16:         template <typename charT, typename traits>
Chris@16:         class string_ref_traits_eq {
Chris@16:         public:
Chris@16:             string_ref_traits_eq ( charT ch ) : ch_(ch) {}
Chris@16:             bool operator () ( charT val ) const { return traits::eq ( ch_, val ); }
Chris@16:             charT ch_;
Chris@16:             };
Chris@16:         }
Chris@16: 
Chris@16:     template<typename charT, typename traits>
Chris@16:     class basic_string_ref {
Chris@16:     public:
Chris@16:         // types
Chris@16:         typedef charT value_type;
Chris@16:         typedef const charT* pointer;
Chris@16:         typedef const charT& reference;
Chris@16:         typedef const charT& const_reference;
Chris@16:         typedef pointer const_iterator; // impl-defined
Chris@16:         typedef const_iterator iterator;
Chris@16:         typedef std::reverse_iterator<const_iterator> const_reverse_iterator;
Chris@16:         typedef const_reverse_iterator reverse_iterator;
Chris@16:         typedef std::size_t size_type;
Chris@16:         typedef std::ptrdiff_t difference_type;
Chris@16:         static BOOST_CONSTEXPR_OR_CONST size_type npos = size_type(-1);
Chris@16: 
Chris@16:         // construct/copy
Chris@16:         BOOST_CONSTEXPR basic_string_ref ()
Chris@16:             : ptr_(NULL), len_(0) {}
Chris@16: 
Chris@16:         BOOST_CONSTEXPR basic_string_ref (const basic_string_ref &rhs)
Chris@16:             : ptr_(rhs.ptr_), len_(rhs.len_) {}
Chris@16: 
Chris@16:         basic_string_ref& operator=(const basic_string_ref &rhs) {
Chris@16:             ptr_ = rhs.ptr_;
Chris@16:             len_ = rhs.len_;
Chris@16:             return *this;
Chris@16:             }
Chris@16: 
Chris@16:         basic_string_ref(const charT* str)
Chris@16:             : ptr_(str), len_(traits::length(str)) {}
Chris@16: 
Chris@16:         template<typename Allocator>
Chris@16:         basic_string_ref(const std::basic_string<charT, traits, Allocator>& str)
Chris@16:             : ptr_(str.data()), len_(str.length()) {}
Chris@16: 
Chris@16:         BOOST_CONSTEXPR basic_string_ref(const charT* str, size_type len)
Chris@16:             : ptr_(str), len_(len) {}
Chris@16: 
Chris@16: #ifndef BOOST_NO_CXX11_EXPLICIT_CONVERSION_OPERATORS
Chris@16:         template<typename Allocator>
Chris@16:         explicit operator std::basic_string<charT, traits, Allocator>() const {
Chris@16:             return std::basic_string<charT, traits, Allocator> ( ptr_, len_ );
Chris@16:             }
Chris@16: #endif
Chris@16: 
Chris@16:         std::basic_string<charT, traits> to_string () const {
Chris@16:             return std::basic_string<charT, traits> ( ptr_, len_ );
Chris@16:             }
Chris@16: 
Chris@16:         // iterators
Chris@16:         BOOST_CONSTEXPR const_iterator   begin() const { return ptr_; }
Chris@16:         BOOST_CONSTEXPR const_iterator  cbegin() const { return ptr_; }
Chris@16:         BOOST_CONSTEXPR const_iterator     end() const { return ptr_ + len_; }
Chris@16:         BOOST_CONSTEXPR const_iterator    cend() const { return ptr_ + len_; }
Chris@16:                 const_reverse_iterator  rbegin() const { return const_reverse_iterator (end()); }
Chris@16:                 const_reverse_iterator crbegin() const { return const_reverse_iterator (end()); }
Chris@16:                 const_reverse_iterator    rend() const { return const_reverse_iterator (begin()); }
Chris@16:                 const_reverse_iterator   crend() const { return const_reverse_iterator (begin()); }
Chris@16: 
Chris@16:         // capacity
Chris@16:         BOOST_CONSTEXPR size_type size()     const { return len_; }
Chris@16:         BOOST_CONSTEXPR size_type length()   const { return len_; }
Chris@16:         BOOST_CONSTEXPR size_type max_size() const { return len_; }
Chris@16:         BOOST_CONSTEXPR bool empty()         const { return len_ == 0; }
Chris@16: 
Chris@16:         // element access
Chris@16:         BOOST_CONSTEXPR const charT& operator[](size_type pos) const { return ptr_[pos]; }
Chris@16: 
Chris@16:         const charT& at(size_t pos) const {
Chris@16:             if ( pos >= len_ )
Chris@16:                 BOOST_THROW_EXCEPTION( std::out_of_range ( "boost::string_ref::at" ) );
Chris@16:             return ptr_[pos];
Chris@16:             }
Chris@16: 
Chris@16:         BOOST_CONSTEXPR const charT& front() const { return ptr_[0]; }
Chris@16:         BOOST_CONSTEXPR const charT& back()  const { return ptr_[len_-1]; }
Chris@16:         BOOST_CONSTEXPR const charT* data()  const { return ptr_; }
Chris@16: 
Chris@16:         // modifiers
Chris@16:         void clear() { len_ = 0; }
Chris@16:         void remove_prefix(size_type n) {
Chris@16:             if ( n > len_ )
Chris@16:                 n = len_;
Chris@16:             ptr_ += n;
Chris@16:             len_ -= n;
Chris@16:             }
Chris@16: 
Chris@16:         void remove_suffix(size_type n) {
Chris@16:             if ( n > len_ )
Chris@16:                 n = len_;
Chris@16:             len_ -= n;
Chris@16:             }
Chris@16: 
Chris@16: 
Chris@16:         // basic_string_ref string operations
Chris@16:         basic_string_ref substr(size_type pos, size_type n=npos) const {
Chris@16:             if ( pos > size())
Chris@16:                 BOOST_THROW_EXCEPTION( std::out_of_range ( "string_ref::substr" ) );
Chris@16:             if ( n == npos || pos + n > size())
Chris@16:                 n = size () - pos;
Chris@16:             return basic_string_ref ( data() + pos, n );
Chris@16:             }
Chris@16: 
Chris@16:         int compare(basic_string_ref x) const {
Chris@16:             const int cmp = traits::compare ( ptr_, x.ptr_, (std::min)(len_, x.len_));
Chris@16:             return cmp != 0 ? cmp : ( len_ == x.len_ ? 0 : len_ < x.len_ ? -1 : 1 );
Chris@16:             }
Chris@16: 
Chris@16:         bool starts_with(charT c) const { return !empty() && traits::eq ( c, front()); }
Chris@16:         bool starts_with(basic_string_ref x) const {
Chris@16:             return len_ >= x.len_ && traits::compare ( ptr_, x.ptr_, x.len_ ) == 0;
Chris@16:             }
Chris@16: 
Chris@16:         bool ends_with(charT c) const { return !empty() && traits::eq ( c, back()); }
Chris@16:         bool ends_with(basic_string_ref x) const {
Chris@16:             return len_ >= x.len_ && traits::compare ( ptr_ + len_ - x.len_, x.ptr_, x.len_ ) == 0;
Chris@16:             }
Chris@16: 
Chris@16:         size_type find(basic_string_ref s) const {
Chris@16:             const_iterator iter = std::search ( this->cbegin (), this->cend (),
Chris@16:                                                 s.cbegin (), s.cend (), traits::eq );
Chris@16:             return iter == this->cend () ? npos : std::distance ( this->cbegin (), iter );
Chris@16:             }
Chris@16: 
Chris@16:         size_type find(charT c) const {
Chris@16:             const_iterator iter = std::find_if ( this->cbegin (), this->cend (),
Chris@16:                                     detail::string_ref_traits_eq<charT, traits> ( c ));
Chris@16:             return iter == this->cend () ? npos : std::distance ( this->cbegin (), iter );
Chris@16:             }
Chris@16: 
Chris@16:         size_type rfind(basic_string_ref s) const {
Chris@16:             const_reverse_iterator iter = std::search ( this->crbegin (), this->crend (),
Chris@16:                                                 s.crbegin (), s.crend (), traits::eq );
Chris@16:             return iter == this->crend () ? npos : reverse_distance ( this->crbegin (), iter );
Chris@16:             }
Chris@16: 
Chris@16:         size_type rfind(charT c) const {
Chris@16:             const_reverse_iterator iter = std::find_if ( this->crbegin (), this->crend (),
Chris@16:                                     detail::string_ref_traits_eq<charT, traits> ( c ));
Chris@16:             return iter == this->crend () ? npos : reverse_distance ( this->crbegin (), iter );
Chris@16:             }
Chris@16: 
Chris@16:         size_type find_first_of(charT c) const { return  find (c); }
Chris@16:         size_type find_last_of (charT c) const { return rfind (c); }
Chris@16: 
Chris@16:         size_type find_first_of(basic_string_ref s) const {
Chris@16:             const_iterator iter = std::find_first_of
Chris@16:                 ( this->cbegin (), this->cend (), s.cbegin (), s.cend (), traits::eq );
Chris@16:             return iter == this->cend () ? npos : std::distance ( this->cbegin (), iter );
Chris@16:             }
Chris@16: 
Chris@16:         size_type find_last_of(basic_string_ref s) const {
Chris@16:             const_reverse_iterator iter = std::find_first_of
Chris@16:                 ( this->crbegin (), this->crend (), s.cbegin (), s.cend (), traits::eq );
Chris@16:             return iter == this->crend () ? npos : reverse_distance ( this->crbegin (), iter);
Chris@16:             }
Chris@16: 
Chris@16:         size_type find_first_not_of(basic_string_ref s) const {
Chris@16:             const_iterator iter = find_not_of ( this->cbegin (), this->cend (), s );
Chris@16:             return iter == this->cend () ? npos : std::distance ( this->cbegin (), iter );
Chris@16:             }
Chris@16: 
Chris@16:         size_type find_first_not_of(charT c) const {
Chris@16:             for ( const_iterator iter = this->cbegin (); iter != this->cend (); ++iter )
Chris@16:                 if ( !traits::eq ( c, *iter ))
Chris@16:                     return std::distance ( this->cbegin (), iter );
Chris@16:             return npos;
Chris@16:             }
Chris@16: 
Chris@16:         size_type find_last_not_of(basic_string_ref s) const {
Chris@16:             const_reverse_iterator iter = find_not_of ( this->crbegin (), this->crend (), s );
Chris@16:             return iter == this->crend () ? npos : reverse_distance ( this->crbegin (), iter );
Chris@16:             }
Chris@16: 
Chris@16:         size_type find_last_not_of(charT c) const {
Chris@16:             for ( const_reverse_iterator iter = this->crbegin (); iter != this->crend (); ++iter )
Chris@16:                 if ( !traits::eq ( c, *iter ))
Chris@16:                     return reverse_distance ( this->crbegin (), iter );
Chris@16:             return npos;
Chris@16:             }
Chris@16: 
Chris@16:     private:
Chris@16:         template <typename r_iter>
Chris@16:         size_type reverse_distance ( r_iter first, r_iter last ) const {
Chris@16:             return len_ - 1 - std::distance ( first, last );
Chris@16:             }
Chris@16: 
Chris@16:         template <typename Iterator>
Chris@16:         Iterator find_not_of ( Iterator first, Iterator last, basic_string_ref s ) const {
Chris@16:             for ( ; first != last ; ++first )
Chris@16:                 if ( 0 == traits::find ( s.ptr_, s.len_, *first ))
Chris@16:                     return first;
Chris@16:             return last;
Chris@16:             }
Chris@16: 
Chris@16: 
Chris@16: 
Chris@16:         const charT *ptr_;
Chris@16:         std::size_t len_;
Chris@16:         };
Chris@16: 
Chris@16: 
Chris@16: //  Comparison operators
Chris@16: //  Equality
Chris@16:     template<typename charT, typename traits>
Chris@16:     inline bool operator==(basic_string_ref<charT, traits> x, basic_string_ref<charT, traits> y) {
Chris@16:         if ( x.size () != y.size ()) return false;
Chris@16:         return x.compare(y) == 0;
Chris@16:         }
Chris@16: 
Chris@16:     template<typename charT, typename traits, typename Allocator>
Chris@16:     inline bool operator==(basic_string_ref<charT, traits> x, const std::basic_string<charT, traits, Allocator> & y) {
Chris@16:         return x == basic_string_ref<charT, traits>(y);
Chris@16:         }
Chris@16: 
Chris@16:     template<typename charT, typename traits, typename Allocator>
Chris@16:     inline bool operator==(const std::basic_string<charT, traits, Allocator> & x, basic_string_ref<charT, traits> y) {
Chris@16:         return basic_string_ref<charT, traits>(x) == y;
Chris@16:         }
Chris@16: 
Chris@16:     template<typename charT, typename traits>
Chris@16:     inline bool operator==(basic_string_ref<charT, traits> x, const charT * y) {
Chris@16:         return x == basic_string_ref<charT, traits>(y);
Chris@16:         }
Chris@16: 
Chris@16:     template<typename charT, typename traits>
Chris@16:     inline bool operator==(const charT * x, basic_string_ref<charT, traits> y) {
Chris@16:         return basic_string_ref<charT, traits>(x) == y;
Chris@16:         }
Chris@16: 
Chris@16: //  Inequality
Chris@16:     template<typename charT, typename traits>
Chris@16:     inline bool operator!=(basic_string_ref<charT, traits> x, basic_string_ref<charT, traits> y) {
Chris@16:         if ( x.size () != y.size ()) return true;
Chris@16:         return x.compare(y) != 0;
Chris@16:         }
Chris@16: 
Chris@16:     template<typename charT, typename traits, typename Allocator>
Chris@16:     inline bool operator!=(basic_string_ref<charT, traits> x, const std::basic_string<charT, traits, Allocator> & y) {
Chris@16:         return x != basic_string_ref<charT, traits>(y);
Chris@16:         }
Chris@16: 
Chris@16:     template<typename charT, typename traits, typename Allocator>
Chris@16:     inline bool operator!=(const std::basic_string<charT, traits, Allocator> & x, basic_string_ref<charT, traits> y) {
Chris@16:         return basic_string_ref<charT, traits>(x) != y;
Chris@16:         }
Chris@16: 
Chris@16:     template<typename charT, typename traits>
Chris@16:     inline bool operator!=(basic_string_ref<charT, traits> x, const charT * y) {
Chris@16:         return x != basic_string_ref<charT, traits>(y);
Chris@16:         }
Chris@16: 
Chris@16:     template<typename charT, typename traits>
Chris@16:     inline bool operator!=(const charT * x, basic_string_ref<charT, traits> y) {
Chris@16:         return basic_string_ref<charT, traits>(x) != y;
Chris@16:         }
Chris@16: 
Chris@16: //  Less than
Chris@16:     template<typename charT, typename traits>
Chris@16:     inline bool operator<(basic_string_ref<charT, traits> x, basic_string_ref<charT, traits> y) {
Chris@16:         return x.compare(y) < 0;
Chris@16:         }
Chris@16: 
Chris@16:     template<typename charT, typename traits, typename Allocator>
Chris@16:     inline bool operator<(basic_string_ref<charT, traits> x, const std::basic_string<charT, traits, Allocator> & y) {
Chris@16:         return x < basic_string_ref<charT, traits>(y);
Chris@16:         }
Chris@16: 
Chris@16:     template<typename charT, typename traits, typename Allocator>
Chris@16:     inline bool operator<(const std::basic_string<charT, traits, Allocator> & x, basic_string_ref<charT, traits> y) {
Chris@16:         return basic_string_ref<charT, traits>(x) < y;
Chris@16:         }
Chris@16: 
Chris@16:     template<typename charT, typename traits>
Chris@16:     inline bool operator<(basic_string_ref<charT, traits> x, const charT * y) {
Chris@16:         return x < basic_string_ref<charT, traits>(y);
Chris@16:         }
Chris@16: 
Chris@16:     template<typename charT, typename traits>
Chris@16:     inline bool operator<(const charT * x, basic_string_ref<charT, traits> y) {
Chris@16:         return basic_string_ref<charT, traits>(x) < y;
Chris@16:         }
Chris@16: 
Chris@16: //  Greater than
Chris@16:     template<typename charT, typename traits>
Chris@16:     inline bool operator>(basic_string_ref<charT, traits> x, basic_string_ref<charT, traits> y) {
Chris@16:         return x.compare(y) > 0;
Chris@16:         }
Chris@16: 
Chris@16:     template<typename charT, typename traits, typename Allocator>
Chris@16:     inline bool operator>(basic_string_ref<charT, traits> x, const std::basic_string<charT, traits, Allocator> & y) {
Chris@16:         return x > basic_string_ref<charT, traits>(y);
Chris@16:         }
Chris@16: 
Chris@16:     template<typename charT, typename traits, typename Allocator>
Chris@16:     inline bool operator>(const std::basic_string<charT, traits, Allocator> & x, basic_string_ref<charT, traits> y) {
Chris@16:         return basic_string_ref<charT, traits>(x) > y;
Chris@16:         }
Chris@16: 
Chris@16:     template<typename charT, typename traits>
Chris@16:     inline bool operator>(basic_string_ref<charT, traits> x, const charT * y) {
Chris@16:         return x > basic_string_ref<charT, traits>(y);
Chris@16:         }
Chris@16: 
Chris@16:     template<typename charT, typename traits>
Chris@16:     inline bool operator>(const charT * x, basic_string_ref<charT, traits> y) {
Chris@16:         return basic_string_ref<charT, traits>(x) > y;
Chris@16:         }
Chris@16: 
Chris@16: //  Less than or equal to
Chris@16:     template<typename charT, typename traits>
Chris@16:     inline bool operator<=(basic_string_ref<charT, traits> x, basic_string_ref<charT, traits> y) {
Chris@16:         return x.compare(y) <= 0;
Chris@16:         }
Chris@16: 
Chris@16:     template<typename charT, typename traits, typename Allocator>
Chris@16:     inline bool operator<=(basic_string_ref<charT, traits> x, const std::basic_string<charT, traits, Allocator> & y) {
Chris@16:         return x <= basic_string_ref<charT, traits>(y);
Chris@16:         }
Chris@16: 
Chris@16:     template<typename charT, typename traits, typename Allocator>
Chris@16:     inline bool operator<=(const std::basic_string<charT, traits, Allocator> & x, basic_string_ref<charT, traits> y) {
Chris@16:         return basic_string_ref<charT, traits>(x) <= y;
Chris@16:         }
Chris@16: 
Chris@16:     template<typename charT, typename traits>
Chris@16:     inline bool operator<=(basic_string_ref<charT, traits> x, const charT * y) {
Chris@16:         return x <= basic_string_ref<charT, traits>(y);
Chris@16:         }
Chris@16: 
Chris@16:     template<typename charT, typename traits>
Chris@16:     inline bool operator<=(const charT * x, basic_string_ref<charT, traits> y) {
Chris@16:         return basic_string_ref<charT, traits>(x) <= y;
Chris@16:         }
Chris@16: 
Chris@16: //  Greater than or equal to
Chris@16:     template<typename charT, typename traits>
Chris@16:     inline bool operator>=(basic_string_ref<charT, traits> x, basic_string_ref<charT, traits> y) {
Chris@16:         return x.compare(y) >= 0;
Chris@16:         }
Chris@16: 
Chris@16:     template<typename charT, typename traits, typename Allocator>
Chris@16:     inline bool operator>=(basic_string_ref<charT, traits> x, const std::basic_string<charT, traits, Allocator> & y) {
Chris@16:         return x >= basic_string_ref<charT, traits>(y);
Chris@16:         }
Chris@16: 
Chris@16:     template<typename charT, typename traits, typename Allocator>
Chris@16:     inline bool operator>=(const std::basic_string<charT, traits, Allocator> & x, basic_string_ref<charT, traits> y) {
Chris@16:         return basic_string_ref<charT, traits>(x) >= y;
Chris@16:         }
Chris@16: 
Chris@16:     template<typename charT, typename traits>
Chris@16:     inline bool operator>=(basic_string_ref<charT, traits> x, const charT * y) {
Chris@16:         return x >= basic_string_ref<charT, traits>(y);
Chris@16:         }
Chris@16: 
Chris@16:     template<typename charT, typename traits>
Chris@16:     inline bool operator>=(const charT * x, basic_string_ref<charT, traits> y) {
Chris@16:         return basic_string_ref<charT, traits>(x) >= y;
Chris@16:         }
Chris@16: 
Chris@16:     namespace detail {
Chris@16: 
Chris@16:         template<class charT, class traits>
Chris@16:         inline void insert_fill_chars(std::basic_ostream<charT, traits>& os, std::size_t n) {
Chris@16:             enum { chunk_size = 8 };
Chris@16:             charT fill_chars[chunk_size];
Chris@16:             std::fill_n(fill_chars, static_cast< std::size_t >(chunk_size), os.fill());
Chris@16:             for (; n >= chunk_size && os.good(); n -= chunk_size)
Chris@16:                 os.write(fill_chars, static_cast< std::size_t >(chunk_size));
Chris@16:             if (n > 0 && os.good())
Chris@16:                 os.write(fill_chars, n);
Chris@16:             }
Chris@16: 
Chris@16:         template<class charT, class traits>
Chris@16:         void insert_aligned(std::basic_ostream<charT, traits>& os, const basic_string_ref<charT,traits>& str) {
Chris@16:             const std::size_t size = str.size();
Chris@16:             const std::size_t alignment_size = static_cast< std::size_t >(os.width()) - size;
Chris@16:             const bool align_left = (os.flags() & std::basic_ostream<charT, traits>::adjustfield) == std::basic_ostream<charT, traits>::left;
Chris@16:             if (!align_left) {
Chris@16:                 detail::insert_fill_chars(os, alignment_size);
Chris@16:                 if (os.good())
Chris@16:                     os.write(str.data(), size);
Chris@16:                 }
Chris@16:             else {
Chris@16:                 os.write(str.data(), size);
Chris@16:                 if (os.good())
Chris@16:                     detail::insert_fill_chars(os, alignment_size);
Chris@16:                 }
Chris@16:             }
Chris@16: 
Chris@16:         } // namespace detail
Chris@16: 
Chris@16:     // Inserter
Chris@16:     template<class charT, class traits>
Chris@16:     inline std::basic_ostream<charT, traits>&
Chris@16:     operator<<(std::basic_ostream<charT, traits>& os, const basic_string_ref<charT,traits>& str) {
Chris@16:         if (os.good()) {
Chris@16:             const std::size_t size = str.size();
Chris@16:             const std::size_t w = static_cast< std::size_t >(os.width());
Chris@16:             if (w <= size)
Chris@16:                 os.write(str.data(), size);
Chris@16:             else
Chris@16:                 detail::insert_aligned(os, str);
Chris@16:             os.width(0);
Chris@16:             }
Chris@16:         return os;
Chris@16:         }
Chris@16: 
Chris@16: #if 0
Chris@16:     // numeric conversions
Chris@16:     //
Chris@16:     //  These are short-term implementations.
Chris@16:     //  In a production environment, I would rather avoid the copying.
Chris@16:     //
Chris@16:     inline int stoi (string_ref str, size_t* idx=0, int base=10) {
Chris@16:         return std::stoi ( std::string(str), idx, base );
Chris@16:         }
Chris@16: 
Chris@16:     inline long stol (string_ref str, size_t* idx=0, int base=10) {
Chris@16:         return std::stol ( std::string(str), idx, base );
Chris@16:         }
Chris@16: 
Chris@16:     inline unsigned long stoul (string_ref str, size_t* idx=0, int base=10) {
Chris@16:         return std::stoul ( std::string(str), idx, base );
Chris@16:         }
Chris@16: 
Chris@16:     inline long long stoll (string_ref str, size_t* idx=0, int base=10) {
Chris@16:         return std::stoll ( std::string(str), idx, base );
Chris@16:         }
Chris@16: 
Chris@16:     inline unsigned long long stoull (string_ref str, size_t* idx=0, int base=10) {
Chris@16:         return std::stoull ( std::string(str), idx, base );
Chris@16:         }
Chris@16: 
Chris@16:     inline float stof (string_ref str, size_t* idx=0) {
Chris@16:         return std::stof ( std::string(str), idx );
Chris@16:         }
Chris@16: 
Chris@16:     inline double stod (string_ref str, size_t* idx=0) {
Chris@16:         return std::stod ( std::string(str), idx );
Chris@16:         }
Chris@16: 
Chris@16:     inline long double stold (string_ref str, size_t* idx=0)  {
Chris@16:         return std::stold ( std::string(str), idx );
Chris@16:         }
Chris@16: 
Chris@16:     inline int  stoi (wstring_ref str, size_t* idx=0, int base=10) {
Chris@16:         return std::stoi ( std::wstring(str), idx, base );
Chris@16:         }
Chris@16: 
Chris@16:     inline long stol (wstring_ref str, size_t* idx=0, int base=10) {
Chris@16:         return std::stol ( std::wstring(str), idx, base );
Chris@16:         }
Chris@16: 
Chris@16:     inline unsigned long stoul (wstring_ref str, size_t* idx=0, int base=10) {
Chris@16:         return std::stoul ( std::wstring(str), idx, base );
Chris@16:         }
Chris@16: 
Chris@16:     inline long long stoll (wstring_ref str, size_t* idx=0, int base=10) {
Chris@16:         return std::stoll ( std::wstring(str), idx, base );
Chris@16:         }
Chris@16: 
Chris@16:     inline unsigned long long stoull (wstring_ref str, size_t* idx=0, int base=10) {
Chris@16:         return std::stoull ( std::wstring(str), idx, base );
Chris@16:         }
Chris@16: 
Chris@16:     inline float  stof (wstring_ref str, size_t* idx=0) {
Chris@16:         return std::stof ( std::wstring(str), idx );
Chris@16:         }
Chris@16: 
Chris@16:     inline double stod (wstring_ref str, size_t* idx=0) {
Chris@16:         return std::stod ( std::wstring(str), idx );
Chris@16:         }
Chris@16: 
Chris@16:     inline long double stold (wstring_ref str, size_t* idx=0) {
Chris@16:         return std::stold ( std::wstring(str), idx );
Chris@16:         }
Chris@16: #endif
Chris@16: 
Chris@16: }
Chris@16: 
Chris@16: #if 0
Chris@16: namespace std {
Chris@16:     // Hashing
Chris@16:     template<> struct hash<boost::string_ref>;
Chris@16:     template<> struct hash<boost::u16string_ref>;
Chris@16:     template<> struct hash<boost::u32string_ref>;
Chris@16:     template<> struct hash<boost::wstring_ref>;
Chris@16: }
Chris@16: #endif
Chris@16: 
Chris@16: #endif