boost/container/string.hpp
////////////////////////////////////////////////////////////////////////////// // // (C) Copyright Ion Gaztanaga 2005-2013. Distributed under the Boost // Software License, Version 1.0. (See accompanying file // LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt) // // See http://www.boost.org/libs/container for documentation. // ////////////////////////////////////////////////////////////////////////////// #ifndef BOOST_CONTAINER_STRING_HPP #define BOOST_CONTAINER_STRING_HPP #include <boost/container/detail/config_begin.hpp> #include <boost/container/detail/workaround.hpp> #include <boost/container/detail/workaround.hpp> #include <boost/container/container_fwd.hpp> #include <boost/container/throw_exception.hpp> #include <boost/container/detail/utilities.hpp> #include <boost/container/detail/iterators.hpp> #include <boost/container/detail/algorithms.hpp> #include <boost/container/detail/version_type.hpp> #include <boost/container/detail/allocation_type.hpp> #include <boost/container/allocator_traits.hpp> #include <boost/container/detail/allocator_version_traits.hpp> #include <boost/container/detail/mpl.hpp> #include <boost/move/utility.hpp> #include <boost/static_assert.hpp> #include <boost/functional/hash.hpp> #include <boost/intrusive/pointer_traits.hpp> #include <boost/detail/no_exceptions_support.hpp> #include <functional> #include <string> #include <utility> #include <iterator> #include <memory> #include <algorithm> #include <iosfwd> #include <istream> #include <ostream> #include <ios> #include <locale> #include <cstddef> #include <climits> #include <boost/container/detail/type_traits.hpp> #include <boost/detail/no_exceptions_support.hpp> #include <boost/type_traits/has_trivial_destructor.hpp> #include <boost/aligned_storage.hpp> namespace boost { namespace container { #ifndef BOOST_CONTAINER_DOXYGEN_INVOKED namespace container_detail { // ------------------------------------------------------------ // Class basic_string_base. // basic_string_base is a helper class that makes it it easier to write // an exception-safe version of basic_string. The constructor allocates, // but does not initialize, a block of memory. The destructor // deallocates, but does not destroy elements within, a block of // memory. The destructor assumes that the memory either is the internal buffer, // or else points to a block of memory that was allocated using string_base's // allocator and whose size is this->m_storage. template <class Allocator> class basic_string_base { BOOST_MOVABLE_BUT_NOT_COPYABLE(basic_string_base) typedef allocator_traits<Allocator> allocator_traits_type; public: typedef Allocator allocator_type; typedef allocator_type stored_allocator_type; typedef typename allocator_traits_type::pointer pointer; typedef typename allocator_traits_type::value_type value_type; typedef typename allocator_traits_type::size_type size_type; typedef ::boost::intrusive::pointer_traits<pointer> pointer_traits; basic_string_base() : members_() { init(); } basic_string_base(const allocator_type& a) : members_(a) { init(); } basic_string_base(const allocator_type& a, size_type n) : members_(a) { this->init(); this->allocate_initial_block(n); } basic_string_base(BOOST_RV_REF(basic_string_base) b) : members_(boost::move(b.alloc())) { this->init(); this->swap_data(b); } ~basic_string_base() { if(!this->is_short()){ this->deallocate_block(); this->is_short(true); } } private: //This is the structure controlling a long string struct long_t { size_type is_short : 1; size_type length : (sizeof(size_type)*CHAR_BIT - 1); size_type storage; pointer start; long_t() {} long_t(const long_t &other) { this->is_short = other.is_short; length = other.length; storage = other.storage; start = other.start; } long_t &operator =(const long_t &other) { this->is_short = other.is_short; length = other.length; storage = other.storage; start = other.start; return *this; } }; //This type is the first part of the structure controlling a short string //The "data" member stores struct short_header { unsigned char is_short : 1; unsigned char length : (CHAR_BIT - 1); }; //This type has the same alignment and size as long_t but it's POD //so, unlike long_t, it can be placed in a union typedef typename boost::aligned_storage< sizeof(long_t), container_detail::alignment_of<long_t>::value>::type long_raw_t; protected: static const size_type MinInternalBufferChars = 8; static const size_type AlignmentOfValueType = alignment_of<value_type>::value; static const size_type ShortDataOffset = container_detail::ct_rounded_size<sizeof(short_header), AlignmentOfValueType>::value; static const size_type ZeroCostInternalBufferChars = (sizeof(long_t) - ShortDataOffset)/sizeof(value_type); static const size_type UnalignedFinalInternalBufferChars = (ZeroCostInternalBufferChars > MinInternalBufferChars) ? ZeroCostInternalBufferChars : MinInternalBufferChars; struct short_t { short_header h; value_type data[UnalignedFinalInternalBufferChars]; }; union repr_t { long_raw_t r; short_t s; const short_t &short_repr() const { return s; } const long_t &long_repr() const { return *static_cast<const long_t*>(static_cast<const void*>(&r)); } short_t &short_repr() { return s; } long_t &long_repr() { return *static_cast<long_t*>(static_cast<void*>(&r)); } }; struct members_holder : public Allocator { members_holder() : Allocator() {} template<class AllocatorConvertible> explicit members_holder(BOOST_FWD_REF(AllocatorConvertible) a) : Allocator(boost::forward<AllocatorConvertible>(a)) {} repr_t m_repr; } members_; const Allocator &alloc() const { return members_; } Allocator &alloc() { return members_; } static const size_type InternalBufferChars = (sizeof(repr_t) - ShortDataOffset)/sizeof(value_type); private: static const size_type MinAllocation = InternalBufferChars*2; protected: bool is_short() const { return static_cast<bool>(this->members_.m_repr.s.h.is_short != 0); } void is_short(bool yes) { const bool was_short = this->is_short(); if(yes && !was_short){ allocator_traits_type::destroy ( this->alloc() , static_cast<long_t*>(static_cast<void*>(&this->members_.m_repr.r)) ); this->members_.m_repr.s.h.is_short = true; } else if(!yes && was_short){ allocator_traits_type::construct ( this->alloc() , static_cast<long_t*>(static_cast<void*>(&this->members_.m_repr.r)) ); this->members_.m_repr.s.h.is_short = false; } } private: void init() { this->members_.m_repr.s.h.is_short = 1; this->members_.m_repr.s.h.length = 0; } protected: typedef container_detail::integral_constant<unsigned, 1> allocator_v1; typedef container_detail::integral_constant<unsigned, 2> allocator_v2; typedef container_detail::integral_constant<unsigned, boost::container::container_detail::version<Allocator>::value> alloc_version; std::pair<pointer, bool> allocation_command(allocation_type command, size_type limit_size, size_type preferred_size, size_type &received_size, pointer reuse = 0) { if(this->is_short() && (command & (expand_fwd | expand_bwd)) ){ reuse = pointer(); command &= ~(expand_fwd | expand_bwd); } return container_detail::allocator_version_traits<Allocator>::allocation_command (this->alloc(), command, limit_size, preferred_size, received_size, reuse); } size_type next_capacity(size_type additional_objects) const { return next_capacity_calculator <size_type, NextCapacityDouble /*NextCapacity60Percent*/>:: get( allocator_traits_type::max_size(this->alloc()) , this->priv_storage(), additional_objects ); } void deallocate(pointer p, size_type n) { if (p && (n > InternalBufferChars)) this->alloc().deallocate(p, n); } void construct(pointer p, const value_type &value = value_type()) { allocator_traits_type::construct ( this->alloc() , container_detail::to_raw_pointer(p) , value ); } void destroy(pointer p, size_type n) { value_type *raw_p = container_detail::to_raw_pointer(p); for(; n--; ++raw_p){ allocator_traits_type::destroy( this->alloc(), raw_p); } } void destroy(pointer p) { allocator_traits_type::destroy ( this->alloc() , container_detail::to_raw_pointer(p) ); } void allocate_initial_block(size_type n) { if (n <= this->max_size()) { if(n > InternalBufferChars){ size_type new_cap = this->next_capacity(n); pointer p = this->allocation_command(allocate_new, n, new_cap, new_cap).first; this->is_short(false); this->priv_long_addr(p); this->priv_long_size(0); this->priv_storage(new_cap); } } else{ throw_length_error("basic_string::allocate_initial_block max_size() exceeded"); } } void deallocate_block() { this->deallocate(this->priv_addr(), this->priv_storage()); } size_type max_size() const { return allocator_traits_type::max_size(this->alloc()) - 1; } protected: size_type priv_capacity() const { return this->priv_storage() - 1; } pointer priv_short_addr() const { return pointer_traits::pointer_to(const_cast<value_type&>(this->members_.m_repr.short_repr().data[0])); } pointer priv_long_addr() const { return this->members_.m_repr.long_repr().start; } pointer priv_addr() const { return this->is_short() ? priv_short_addr() : priv_long_addr() ; } pointer priv_end_addr() const { return this->is_short() ? this->priv_short_addr() + this->priv_short_size() : this->priv_long_addr() + this->priv_long_size() ; } void priv_long_addr(pointer addr) { this->members_.m_repr.long_repr().start = addr; } size_type priv_storage() const { return this->is_short() ? priv_short_storage() : priv_long_storage(); } size_type priv_short_storage() const { return InternalBufferChars; } size_type priv_long_storage() const { return this->members_.m_repr.long_repr().storage; } void priv_storage(size_type storage) { if(!this->is_short()) this->priv_long_storage(storage); } void priv_long_storage(size_type storage) { this->members_.m_repr.long_repr().storage = storage; } size_type priv_size() const { return this->is_short() ? this->priv_short_size() : this->priv_long_size(); } size_type priv_short_size() const { return this->members_.m_repr.short_repr().h.length; } size_type priv_long_size() const { return this->members_.m_repr.long_repr().length; } void priv_size(size_type sz) { if(this->is_short()) this->priv_short_size(sz); else this->priv_long_size(sz); } void priv_short_size(size_type sz) { this->members_.m_repr.s.h.length = (unsigned char)sz; } void priv_long_size(size_type sz) { this->members_.m_repr.long_repr().length = sz; } void swap_data(basic_string_base& other) { if(this->is_short()){ if(other.is_short()){ std::swap(this->members_.m_repr, other.members_.m_repr); } else{ short_t short_backup(this->members_.m_repr.short_repr()); long_t long_backup (other.members_.m_repr.long_repr()); other.members_.m_repr.long_repr().~long_t(); ::new(&this->members_.m_repr.long_repr()) long_t; this->members_.m_repr.long_repr() = long_backup; other.members_.m_repr.short_repr() = short_backup; } } else{ if(other.is_short()){ short_t short_backup(other.members_.m_repr.short_repr()); long_t long_backup (this->members_.m_repr.long_repr()); this->members_.m_repr.long_repr().~long_t(); ::new(&other.members_.m_repr.long_repr()) long_t; other.members_.m_repr.long_repr() = long_backup; this->members_.m_repr.short_repr() = short_backup; } else{ boost::container::swap_dispatch(this->members_.m_repr.long_repr(), other.members_.m_repr.long_repr()); } } } }; } //namespace container_detail { #endif //#ifndef BOOST_CONTAINER_DOXYGEN_INVOKED //! The basic_string class represents a Sequence of characters. It contains all the //! usual operations of a Sequence, and, additionally, it contains standard string //! operations such as search and concatenation. //! //! The basic_string class is parameterized by character type, and by that type's //! Character Traits. //! //! This class has performance characteristics very much like vector<>, meaning, //! for example, that it does not perform reference-count or copy-on-write, and that //! concatenation of two strings is an O(N) operation. //! //! Some of basic_string's member functions use an unusual method of specifying positions //! and ranges. In addition to the conventional method using iterators, many of //! basic_string's member functions use a single value pos of type size_type to represent a //! position (in which case the position is begin() + pos, and many of basic_string's //! member functions use two values, pos and n, to represent a range. In that case pos is //! the beginning of the range and n is its size. That is, the range is //! [begin() + pos, begin() + pos + n). //! //! Note that the C++ standard does not specify the complexity of basic_string operations. //! In this implementation, basic_string has performance characteristics very similar to //! those of vector: access to a single character is O(1), while copy and concatenation //! are O(N). //! //! In this implementation, begin(), //! end(), rbegin(), rend(), operator[], c_str(), and data() do not invalidate iterators. //! In this implementation, iterators are only invalidated by member functions that //! explicitly change the string's contents. //! //! \tparam CharT The type of character it contains. //! \tparam Traits The Character Traits type, which encapsulates basic character operations //! \tparam Allocator The allocator, used for internal memory management. #ifdef BOOST_CONTAINER_DOXYGEN_INVOKED template <class CharT, class Traits = std::char_traits<CharT>, class Allocator = std::allocator<CharT> > #else template <class CharT, class Traits, class Allocator> #endif class basic_string : private container_detail::basic_string_base<Allocator> { #ifndef BOOST_CONTAINER_DOXYGEN_INVOKED private: typedef allocator_traits<Allocator> allocator_traits_type; BOOST_COPYABLE_AND_MOVABLE(basic_string) typedef container_detail::basic_string_base<Allocator> base_t; static const typename base_t::size_type InternalBufferChars = base_t::InternalBufferChars; protected: // Allocator helper class to use a char_traits as a function object. template <class Tr> struct Eq_traits { //Compatibility with std::binary_function typedef typename Tr::char_type first_argument_type; typedef typename Tr::char_type second_argument_type; typedef bool result_type; bool operator()(const first_argument_type& x, const second_argument_type& y) const { return Tr::eq(x, y); } }; template <class Tr> struct Not_within_traits { typedef typename Tr::char_type argument_type; typedef bool result_type; typedef const typename Tr::char_type* Pointer; const Pointer m_first; const Pointer m_last; Not_within_traits(Pointer f, Pointer l) : m_first(f), m_last(l) {} bool operator()(const typename Tr::char_type& x) const { return std::find_if(m_first, m_last, std::bind1st(Eq_traits<Tr>(), x)) == m_last; } }; #endif //#ifndef BOOST_CONTAINER_DOXYGEN_INVOKED public: ////////////////////////////////////////////// // // types // ////////////////////////////////////////////// typedef Traits traits_type; typedef CharT value_type; typedef typename ::boost::container::allocator_traits<Allocator>::pointer pointer; typedef typename ::boost::container::allocator_traits<Allocator>::const_pointer const_pointer; typedef typename ::boost::container::allocator_traits<Allocator>::reference reference; typedef typename ::boost::container::allocator_traits<Allocator>::const_reference const_reference; typedef typename ::boost::container::allocator_traits<Allocator>::size_type size_type; typedef typename ::boost::container::allocator_traits<Allocator>::difference_type difference_type; typedef Allocator allocator_type; typedef BOOST_CONTAINER_IMPDEF(allocator_type) stored_allocator_type; typedef BOOST_CONTAINER_IMPDEF(pointer) iterator; typedef BOOST_CONTAINER_IMPDEF(const_pointer) const_iterator; typedef BOOST_CONTAINER_IMPDEF(std::reverse_iterator<iterator>) reverse_iterator; typedef BOOST_CONTAINER_IMPDEF(std::reverse_iterator<const_iterator>) const_reverse_iterator; static const size_type npos = size_type(-1); #ifndef BOOST_CONTAINER_DOXYGEN_INVOKED private: typedef constant_iterator<CharT, difference_type> cvalue_iterator; typedef typename base_t::allocator_v1 allocator_v1; typedef typename base_t::allocator_v2 allocator_v2; typedef typename base_t::alloc_version alloc_version; typedef ::boost::intrusive::pointer_traits<pointer> pointer_traits; #endif //#ifndef BOOST_CONTAINER_DOXYGEN_INVOKED public: // Constructor, destructor, assignment. ////////////////////////////////////////////// // // construct/copy/destroy // ////////////////////////////////////////////// #ifndef BOOST_CONTAINER_DOXYGEN_INVOKED struct reserve_t {}; basic_string(reserve_t, size_type n, const allocator_type& a = allocator_type()) //Select allocator as in copy constructor as reserve_t-based constructors //are two step copies optimized for capacity : base_t( allocator_traits_type::select_on_container_copy_construction(a) , n + 1) { this->priv_terminate_string(); } #endif //#ifndef BOOST_CONTAINER_DOXYGEN_INVOKED //! <b>Effects</b>: Default constructs a basic_string. //! //! <b>Throws</b>: If allocator_type's default constructor throws. basic_string() : base_t() { this->priv_terminate_string(); } //! <b>Effects</b>: Constructs a basic_string taking the allocator as parameter. //! //! <b>Throws</b>: Nothing explicit basic_string(const allocator_type& a) BOOST_CONTAINER_NOEXCEPT : base_t(a) { this->priv_terminate_string(); } //! <b>Effects</b>: Copy constructs a basic_string. //! //! <b>Postcondition</b>: x == *this. //! //! <b>Throws</b>: If allocator_type's default constructor or allocation throws. basic_string(const basic_string& s) : base_t(allocator_traits_type::select_on_container_copy_construction(s.alloc())) { this->priv_terminate_string(); this->assign(s.begin(), s.end()); } //! <b>Effects</b>: Move constructor. Moves s's resources to *this. //! //! <b>Throws</b>: Nothing. //! //! <b>Complexity</b>: Constant. basic_string(BOOST_RV_REF(basic_string) s) BOOST_CONTAINER_NOEXCEPT : base_t(boost::move((base_t&)s)) {} //! <b>Effects</b>: Copy constructs a basic_string using the specified allocator. //! //! <b>Postcondition</b>: x == *this. //! //! <b>Throws</b>: If allocation throws. basic_string(const basic_string& s, const allocator_type &a) : base_t(a) { this->priv_terminate_string(); this->assign(s.begin(), s.end()); } //! <b>Effects</b>: Move constructor using the specified allocator. //! Moves s's resources to *this. //! //! <b>Throws</b>: If allocation throws. //! //! <b>Complexity</b>: Constant if a == s.get_allocator(), linear otherwise. basic_string(BOOST_RV_REF(basic_string) s, const allocator_type &a) : base_t(a) { this->priv_terminate_string(); if(a == this->alloc()){ this->swap_data(s); } else{ this->assign(s.begin(), s.end()); } } //! <b>Effects</b>: Constructs a basic_string taking the allocator as parameter, //! and is initialized by a specific number of characters of the s string. basic_string(const basic_string& s, size_type pos, size_type n = npos, const allocator_type& a = allocator_type()) : base_t(a) { this->priv_terminate_string(); if (pos > s.size()) throw_out_of_range("basic_string::basic_string out of range position"); else this->assign (s.begin() + pos, s.begin() + pos + container_detail::min_value(n, s.size() - pos)); } //! <b>Effects</b>: Constructs a basic_string taking the allocator as parameter, //! and is initialized by a specific number of characters of the s c-string. basic_string(const CharT* s, size_type n, const allocator_type& a = allocator_type()) : base_t(a) { this->priv_terminate_string(); this->assign(s, s + n); } //! <b>Effects</b>: Constructs a basic_string taking the allocator as parameter, //! and is initialized by the null-terminated s c-string. basic_string(const CharT* s, const allocator_type& a = allocator_type()) : base_t(a) { this->priv_terminate_string(); this->assign(s, s + Traits::length(s)); } //! <b>Effects</b>: Constructs a basic_string taking the allocator as parameter, //! and is initialized by n copies of c. basic_string(size_type n, CharT c, const allocator_type& a = allocator_type()) : base_t(a) { this->priv_terminate_string(); this->assign(n, c); } //! <b>Effects</b>: Constructs a basic_string taking the allocator as parameter, //! and is initialized by n default-initialized characters. basic_string(size_type n, default_init_t, const allocator_type& a = allocator_type()) : base_t(a, n + 1) { this->priv_size(n); this->priv_terminate_string(); } //! <b>Effects</b>: Constructs a basic_string taking the allocator as parameter, //! and a range of iterators. template <class InputIterator> basic_string(InputIterator f, InputIterator l, const allocator_type& a = allocator_type()) : base_t(a) { this->priv_terminate_string(); this->assign(f, l); } //! <b>Effects</b>: Destroys the basic_string. All used memory is deallocated. //! //! <b>Throws</b>: Nothing. //! //! <b>Complexity</b>: Constant. ~basic_string() BOOST_CONTAINER_NOEXCEPT {} //! <b>Effects</b>: Copy constructs a string. //! //! <b>Postcondition</b>: x == *this. //! //! <b>Complexity</b>: Linear to the elements x contains. basic_string& operator=(BOOST_COPY_ASSIGN_REF(basic_string) x) { if (&x != this){ allocator_type &this_alloc = this->alloc(); const allocator_type &x_alloc = x.alloc(); container_detail::bool_<allocator_traits_type:: propagate_on_container_copy_assignment::value> flag; if(flag && this_alloc != x_alloc){ if(!this->is_short()){ this->deallocate_block(); this->is_short(true); Traits::assign(*this->priv_addr(), CharT(0)); this->priv_short_size(0); } } container_detail::assign_alloc(this->alloc(), x.alloc(), flag); this->assign(x.begin(), x.end()); } return *this; } //! <b>Effects</b>: Move constructor. Moves x's resources to *this. //! //! <b>Throws</b>: If allocator_traits_type::propagate_on_container_move_assignment //! is false and allocation throws //! //! <b>Complexity</b>: Constant if allocator_traits_type:: //! propagate_on_container_move_assignment is true or //! this->get>allocator() == x.get_allocator(). Linear otherwise. basic_string& operator=(BOOST_RV_REF(basic_string) x) BOOST_CONTAINER_NOEXCEPT_IF(allocator_traits_type::propagate_on_container_move_assignment::value) { //for move constructor, no aliasing (&x != this) is assummed. BOOST_ASSERT(this != &x); allocator_type &this_alloc = this->alloc(); allocator_type &x_alloc = x.alloc(); const bool propagate_alloc = allocator_traits_type:: propagate_on_container_move_assignment::value; container_detail::bool_<propagate_alloc> flag; const bool allocators_equal = this_alloc == x_alloc; (void)allocators_equal; //Resources can be transferred if both allocators are //going to be equal after this function (either propagated or already equal) if(propagate_alloc || allocators_equal){ //Destroy objects but retain memory in case x reuses it in the future this->clear(); //Move allocator if needed container_detail::move_alloc(this_alloc, x_alloc, flag); //Nothrow swap this->swap_data(x); } //Else do a one by one move else{ this->assign( x.begin(), x.end()); } return *this; } //! <b>Effects</b>: Assignment from a null-terminated c-string. basic_string& operator=(const CharT* s) { return this->assign(s, s + Traits::length(s)); } //! <b>Effects</b>: Assignment from character. basic_string& operator=(CharT c) { return this->assign(static_cast<size_type>(1), c); } //! <b>Effects</b>: Returns a copy of the internal allocator. //! //! <b>Throws</b>: If allocator's copy constructor throws. //! //! <b>Complexity</b>: Constant. allocator_type get_allocator() const BOOST_CONTAINER_NOEXCEPT { return this->alloc(); } //! <b>Effects</b>: Returns a reference to the internal allocator. //! //! <b>Throws</b>: Nothing //! //! <b>Complexity</b>: Constant. //! //! <b>Note</b>: Non-standard extension. stored_allocator_type &get_stored_allocator() BOOST_CONTAINER_NOEXCEPT { return this->alloc(); } //! <b>Effects</b>: Returns a reference to the internal allocator. //! //! <b>Throws</b>: Nothing //! //! <b>Complexity</b>: Constant. //! //! <b>Note</b>: Non-standard extension. const stored_allocator_type &get_stored_allocator() const BOOST_CONTAINER_NOEXCEPT { return this->alloc(); } ////////////////////////////////////////////// // // iterators // ////////////////////////////////////////////// //! <b>Effects</b>: Returns an iterator to the first element contained in the vector. //! //! <b>Throws</b>: Nothing. //! //! <b>Complexity</b>: Constant. iterator begin() BOOST_CONTAINER_NOEXCEPT { return this->priv_addr(); } //! <b>Effects</b>: Returns a const_iterator to the first element contained in the vector. //! //! <b>Throws</b>: Nothing. //! //! <b>Complexity</b>: Constant. const_iterator begin() const BOOST_CONTAINER_NOEXCEPT { return this->priv_addr(); } //! <b>Effects</b>: Returns an iterator to the end of the vector. //! //! <b>Throws</b>: Nothing. //! //! <b>Complexity</b>: Constant. iterator end() BOOST_CONTAINER_NOEXCEPT { return this->priv_end_addr(); } //! <b>Effects</b>: Returns a const_iterator to the end of the vector. //! //! <b>Throws</b>: Nothing. //! //! <b>Complexity</b>: Constant. const_iterator end() const BOOST_CONTAINER_NOEXCEPT { return this->priv_end_addr(); } //! <b>Effects</b>: Returns a reverse_iterator pointing to the beginning //! of the reversed vector. //! //! <b>Throws</b>: Nothing. //! //! <b>Complexity</b>: Constant. reverse_iterator rbegin() BOOST_CONTAINER_NOEXCEPT { return reverse_iterator(this->priv_end_addr()); } //! <b>Effects</b>: Returns a const_reverse_iterator pointing to the beginning //! of the reversed vector. //! //! <b>Throws</b>: Nothing. //! //! <b>Complexity</b>: Constant. const_reverse_iterator rbegin() const BOOST_CONTAINER_NOEXCEPT { return this->crbegin(); } //! <b>Effects</b>: Returns a reverse_iterator pointing to the end //! of the reversed vector. //! //! <b>Throws</b>: Nothing. //! //! <b>Complexity</b>: Constant. reverse_iterator rend() BOOST_CONTAINER_NOEXCEPT { return reverse_iterator(this->priv_addr()); } //! <b>Effects</b>: Returns a const_reverse_iterator pointing to the end //! of the reversed vector. //! //! <b>Throws</b>: Nothing. //! //! <b>Complexity</b>: Constant. const_reverse_iterator rend() const BOOST_CONTAINER_NOEXCEPT { return this->crend(); } //! <b>Effects</b>: Returns a const_iterator to the first element contained in the vector. //! //! <b>Throws</b>: Nothing. //! //! <b>Complexity</b>: Constant. const_iterator cbegin() const BOOST_CONTAINER_NOEXCEPT { return this->priv_addr(); } //! <b>Effects</b>: Returns a const_iterator to the end of the vector. //! //! <b>Throws</b>: Nothing. //! //! <b>Complexity</b>: Constant. const_iterator cend() const BOOST_CONTAINER_NOEXCEPT { return this->priv_end_addr(); } //! <b>Effects</b>: Returns a const_reverse_iterator pointing to the beginning //! of the reversed vector. //! //! <b>Throws</b>: Nothing. //! //! <b>Complexity</b>: Constant. const_reverse_iterator crbegin() const BOOST_CONTAINER_NOEXCEPT { return const_reverse_iterator(this->priv_end_addr()); } //! <b>Effects</b>: Returns a const_reverse_iterator pointing to the end //! of the reversed vector. //! //! <b>Throws</b>: Nothing. //! //! <b>Complexity</b>: Constant. const_reverse_iterator crend() const BOOST_CONTAINER_NOEXCEPT { return const_reverse_iterator(this->priv_addr()); } ////////////////////////////////////////////// // // capacity // ////////////////////////////////////////////// //! <b>Effects</b>: Returns true if the vector contains no elements. //! //! <b>Throws</b>: Nothing. //! //! <b>Complexity</b>: Constant. bool empty() const BOOST_CONTAINER_NOEXCEPT { return !this->priv_size(); } //! <b>Effects</b>: Returns the number of the elements contained in the vector. //! //! <b>Throws</b>: Nothing. //! //! <b>Complexity</b>: Constant. size_type size() const BOOST_CONTAINER_NOEXCEPT { return this->priv_size(); } //! <b>Effects</b>: Returns the number of the elements contained in the vector. //! //! <b>Throws</b>: Nothing. //! //! <b>Complexity</b>: Constant. size_type length() const BOOST_CONTAINER_NOEXCEPT { return this->size(); } //! <b>Effects</b>: Returns the largest possible size of the vector. //! //! <b>Throws</b>: Nothing. //! //! <b>Complexity</b>: Constant. size_type max_size() const BOOST_CONTAINER_NOEXCEPT { return base_t::max_size(); } //! <b>Effects</b>: Inserts or erases elements at the end such that //! the size becomes n. New elements are copy constructed from x. //! //! <b>Throws</b>: If memory allocation throws //! //! <b>Complexity</b>: Linear to the difference between size() and new_size. void resize(size_type n, CharT c) { if (n <= this->size()) this->erase(this->begin() + n, this->end()); else this->append(n - this->size(), c); } //! <b>Effects</b>: Inserts or erases elements at the end such that //! the size becomes n. New elements are value initialized. //! //! <b>Throws</b>: If memory allocation throws //! //! <b>Complexity</b>: Linear to the difference between size() and new_size. void resize(size_type n) { resize(n, CharT()); } //! <b>Effects</b>: Inserts or erases elements at the end such that //! the size becomes n. New elements are uninitialized. //! //! <b>Throws</b>: If memory allocation throws //! //! <b>Complexity</b>: Linear to the difference between size() and new_size. //! //! <b>Note</b>: Non-standard extension void resize(size_type n, default_init_t) { if (n <= this->size()) this->erase(this->begin() + n, this->end()); else{ this->priv_reserve(n, false); this->priv_size(n); this->priv_terminate_string(); } } //! <b>Effects</b>: Number of elements for which memory has been allocated. //! capacity() is always greater than or equal to size(). //! //! <b>Throws</b>: Nothing. //! //! <b>Complexity</b>: Constant. size_type capacity() const BOOST_CONTAINER_NOEXCEPT { return this->priv_capacity(); } //! <b>Effects</b>: If n is less than or equal to capacity(), this call has no //! effect. Otherwise, it is a request for allocation of additional memory. //! If the request is successful, then capacity() is greater than or equal to //! n; otherwise, capacity() is unchanged. In either case, size() is unchanged. //! //! <b>Throws</b>: If memory allocation allocation throws void reserve(size_type res_arg) { this->priv_reserve(res_arg); } //! <b>Effects</b>: Tries to deallocate the excess of memory created //! with previous allocations. The size of the string is unchanged //! //! <b>Throws</b>: Nothing //! //! <b>Complexity</b>: Linear to size(). void shrink_to_fit() { //Check if shrinking is possible if(this->priv_storage() > InternalBufferChars){ //Check if we should pass from dynamically allocated buffer //to the internal storage if(this->priv_size() < InternalBufferChars){ //Dynamically allocated buffer attributes pointer long_addr = this->priv_long_addr(); size_type long_storage = this->priv_long_storage(); size_type long_size = this->priv_long_size(); //Shrink from allocated buffer to the internal one, including trailing null Traits::copy( container_detail::to_raw_pointer(this->priv_short_addr()) , container_detail::to_raw_pointer(long_addr) , long_size+1); this->is_short(true); this->alloc().deallocate(long_addr, long_storage); } else{ //Shrinking in dynamic buffer this->priv_shrink_to_fit_dynamic_buffer(alloc_version()); } } } ////////////////////////////////////////////// // // element access // ////////////////////////////////////////////// //! <b>Requires</b>: size() > n. //! //! <b>Effects</b>: Returns a reference to the nth element //! from the beginning of the container. //! //! <b>Throws</b>: Nothing. //! //! <b>Complexity</b>: Constant. reference operator[](size_type n) BOOST_CONTAINER_NOEXCEPT { return *(this->priv_addr() + n); } //! <b>Requires</b>: size() > n. //! //! <b>Effects</b>: Returns a const reference to the nth element //! from the beginning of the container. //! //! <b>Throws</b>: Nothing. //! //! <b>Complexity</b>: Constant. const_reference operator[](size_type n) const BOOST_CONTAINER_NOEXCEPT { return *(this->priv_addr() + n); } //! <b>Requires</b>: size() > n. //! //! <b>Effects</b>: Returns a reference to the nth element //! from the beginning of the container. //! //! <b>Throws</b>: std::range_error if n >= size() //! //! <b>Complexity</b>: Constant. reference at(size_type n) { if (n >= this->size()) throw_out_of_range("basic_string::at invalid subscript"); return *(this->priv_addr() + n); } //! <b>Requires</b>: size() > n. //! //! <b>Effects</b>: Returns a const reference to the nth element //! from the beginning of the container. //! //! <b>Throws</b>: std::range_error if n >= size() //! //! <b>Complexity</b>: Constant. const_reference at(size_type n) const { if (n >= this->size()) throw_out_of_range("basic_string::at invalid subscript"); return *(this->priv_addr() + n); } ////////////////////////////////////////////// // // modifiers // ////////////////////////////////////////////// //! <b>Effects</b>: Calls append(str.data, str.size()). //! //! <b>Returns</b>: *this basic_string& operator+=(const basic_string& s) { return this->append(s); } //! <b>Effects</b>: Calls append(s). //! //! <b>Returns</b>: *this basic_string& operator+=(const CharT* s) { return this->append(s); } //! <b>Effects</b>: Calls append(1, c). //! //! <b>Returns</b>: *this basic_string& operator+=(CharT c) { this->push_back(c); return *this; } //! <b>Effects</b>: Calls append(str.data(), str.size()). //! //! <b>Returns</b>: *this basic_string& append(const basic_string& s) { return this->append(s.begin(), s.end()); } //! <b>Requires</b>: pos <= str.size() //! //! <b>Effects</b>: Determines the effective length rlen of the string to append //! as the smaller of n and str.size() - pos and calls append(str.data() + pos, rlen). //! //! <b>Throws</b>: If memory allocation throws and out_of_range if pos > str.size() //! //! <b>Returns</b>: *this basic_string& append(const basic_string& s, size_type pos, size_type n) { if (pos > s.size()) throw_out_of_range("basic_string::append out of range position"); return this->append(s.begin() + pos, s.begin() + pos + container_detail::min_value(n, s.size() - pos)); } //! <b>Requires</b>: s points to an array of at least n elements of CharT. //! //! <b>Effects</b>: The function replaces the string controlled by *this with //! a string of length size() + n whose irst size() elements are a copy of the //! original string controlled by *this and whose remaining //! elements are a copy of the initial n elements of s. //! //! <b>Throws</b>: If memory allocation throws length_error if size() + n > max_size(). //! //! <b>Returns</b>: *this basic_string& append(const CharT* s, size_type n) { return this->append(s, s + n); } //! <b>Requires</b>: s points to an array of at least traits::length(s) + 1 elements of CharT. //! //! <b>Effects</b>: Calls append(s, traits::length(s)). //! //! <b>Returns</b>: *this basic_string& append(const CharT* s) { return this->append(s, s + Traits::length(s)); } //! <b>Effects</b>: Equivalent to append(basic_string(n, c)). //! //! <b>Returns</b>: *this basic_string& append(size_type n, CharT c) { return this->append(cvalue_iterator(c, n), cvalue_iterator()); } //! <b>Requires</b>: [first,last) is a valid range. //! //! <b>Effects</b>: Equivalent to append(basic_string(first, last)). //! //! <b>Returns</b>: *this template <class InputIter> basic_string& append(InputIter first, InputIter last) { this->insert(this->end(), first, last); return *this; } //! <b>Effects</b>: Equivalent to append(static_cast<size_type>(1), c). void push_back(CharT c) { const size_type old_size = this->priv_size(); if (old_size < this->capacity()){ const pointer addr = this->priv_addr(); this->priv_construct_null(addr + old_size + 1); Traits::assign(addr[old_size], c); this->priv_size(old_size+1); } else{ //No enough memory, insert a new object at the end this->append(size_type(1), c); } } //! <b>Effects</b>: Equivalent to assign(str, 0, npos). //! //! <b>Returns</b>: *this basic_string& assign(const basic_string& s) { return this->operator=(s); } //! <b>Effects</b>: The function replaces the string controlled by *this //! with a string of length str.size() whose elements are a copy of the string //! controlled by str. Leaves str in a valid but unspecified state. //! //! <b>Throws</b>: Nothing //! //! <b>Returns</b>: *this basic_string& assign(BOOST_RV_REF(basic_string) ms) BOOST_CONTAINER_NOEXCEPT { return this->swap_data(ms), *this; } //! <b>Requires</b>: pos <= str.size() //! //! <b>Effects</b>: Determines the effective length rlen of the string to assign as //! the smaller of n and str.size() - pos and calls assign(str.data() + pos rlen). //! //! <b>Throws</b>: If memory allocation throws or out_of_range if pos > str.size(). //! //! <b>Returns</b>: *this basic_string& assign(const basic_string& s, size_type pos, size_type n) { if (pos > s.size()) throw_out_of_range("basic_string::assign out of range position"); return this->assign(s.begin() + pos, s.begin() + pos + container_detail::min_value(n, s.size() - pos)); } //! <b>Requires</b>: s points to an array of at least n elements of CharT. //! //! <b>Effects</b>: Replaces the string controlled by *this with a string of //! length n whose elements are a copy of those pointed to by s. //! //! <b>Throws</b>: If memory allocation throws or length_error if n > max_size(). //! //! <b>Returns</b>: *this basic_string& assign(const CharT* s, size_type n) { return this->assign(s, s + n); } //! <b>Requires</b>: s points to an array of at least traits::length(s) + 1 elements of CharT. //! //! <b>Effects</b>: Calls assign(s, traits::length(s)). //! //! <b>Returns</b>: *this basic_string& assign(const CharT* s) { return this->assign(s, s + Traits::length(s)); } //! <b>Effects</b>: Equivalent to assign(basic_string(n, c)). //! //! <b>Returns</b>: *this basic_string& assign(size_type n, CharT c) { return this->assign(cvalue_iterator(c, n), cvalue_iterator()); } //! <b>Effects</b>: Equivalent to assign(basic_string(first, last)). //! //! <b>Returns</b>: *this basic_string& assign(const CharT* first, const CharT* last) { size_type n = static_cast<size_type>(last - first); this->reserve(n); CharT* ptr = container_detail::to_raw_pointer(this->priv_addr()); Traits::copy(ptr, first, n); this->priv_construct_null(ptr + n); this->priv_size(n); return *this; } //! <b>Effects</b>: Equivalent to assign(basic_string(first, last)). //! //! <b>Returns</b>: *this template <class InputIter> basic_string& assign(InputIter first, InputIter last #if !defined(BOOST_CONTAINER_DOXYGEN_INVOKED) , typename container_detail::enable_if_c < !container_detail::is_convertible<InputIter, size_type>::value >::type * = 0 #endif ) { size_type cur = 0; const pointer addr = this->priv_addr(); CharT *ptr = container_detail::to_raw_pointer(addr); const size_type old_size = this->priv_size(); while (first != last && cur != old_size) { Traits::assign(*ptr, *first); ++first; ++cur; ++ptr; } if (first == last) this->erase(addr + cur, addr + old_size); else this->append(first, last); return *this; } //! <b>Requires</b>: pos <= size(). //! //! <b>Effects</b>: Calls insert(pos, str.data(), str.size()). //! //! <b>Throws</b>: If memory allocation throws or out_of_range if pos > size(). //! //! <b>Returns</b>: *this basic_string& insert(size_type pos, const basic_string& s) { const size_type sz = this->size(); if (pos > sz) throw_out_of_range("basic_string::insert out of range position"); if (sz > this->max_size() - s.size()) throw_length_error("basic_string::insert max_size() exceeded"); this->insert(this->priv_addr() + pos, s.begin(), s.end()); return *this; } //! <b>Requires</b>: pos1 <= size() and pos2 <= str.size() //! //! <b>Effects</b>: Determines the effective length rlen of the string to insert as //! the smaller of n and str.size() - pos2 and calls insert(pos1, str.data() + pos2, rlen). //! //! <b>Throws</b>: If memory allocation throws or out_of_range if pos1 > size() or pos2 > str.size(). //! //! <b>Returns</b>: *this basic_string& insert(size_type pos1, const basic_string& s, size_type pos2, size_type n) { const size_type sz = this->size(); const size_type str_size = s.size(); if (pos1 > sz || pos2 > str_size) throw_out_of_range("basic_string::insert out of range position"); size_type len = container_detail::min_value(n, str_size - pos2); if (sz > this->max_size() - len) throw_length_error("basic_string::insert max_size() exceeded"); const CharT *beg_ptr = container_detail::to_raw_pointer(s.begin()) + pos2; const CharT *end_ptr = beg_ptr + len; this->insert(this->priv_addr() + pos1, beg_ptr, end_ptr); return *this; } //! <b>Requires</b>: s points to an array of at least n elements of CharT and pos <= size(). //! //! <b>Effects</b>: Replaces the string controlled by *this with a string of length size() + n //! whose first pos elements are a copy of the initial elements of the original string //! controlled by *this and whose next n elements are a copy of the elements in s and whose //! remaining elements are a copy of the remaining elements of the original string controlled by *this. //! //! <b>Throws</b>: If memory allocation throws, out_of_range if pos > size() or //! length_error if size() + n > max_size(). //! //! <b>Returns</b>: *this basic_string& insert(size_type pos, const CharT* s, size_type n) { if (pos > this->size()) throw_out_of_range("basic_string::insert out of range position"); if (this->size() > this->max_size() - n) throw_length_error("basic_string::insert max_size() exceeded"); this->insert(this->priv_addr() + pos, s, s + n); return *this; } //! <b>Requires</b>: pos <= size() and s points to an array of at least traits::length(s) + 1 elements of CharT //! //! <b>Effects</b>: Calls insert(pos, s, traits::length(s)). //! //! <b>Throws</b>: If memory allocation throws, out_of_range if pos > size() //! length_error if size() > max_size() - Traits::length(s) //! //! <b>Returns</b>: *this basic_string& insert(size_type pos, const CharT* s) { if (pos > this->size()) throw_out_of_range("basic_string::insert out of range position"); size_type len = Traits::length(s); if (this->size() > this->max_size() - len) throw_length_error("basic_string::insert max_size() exceeded"); this->insert(this->priv_addr() + pos, s, s + len); return *this; } //! <b>Effects</b>: Equivalent to insert(pos, basic_string(n, c)). //! //! <b>Throws</b>: If memory allocation throws, out_of_range if pos > size() //! length_error if size() > max_size() - n //! //! <b>Returns</b>: *this basic_string& insert(size_type pos, size_type n, CharT c) { if (pos > this->size()) throw_out_of_range("basic_string::insert out of range position"); if (this->size() > this->max_size() - n) throw_length_error("basic_string::insert max_size() exceeded"); this->insert(const_iterator(this->priv_addr() + pos), n, c); return *this; } //! <b>Requires</b>: p is a valid iterator on *this. //! //! <b>Effects</b>: inserts a copy of c before the character referred to by p. //! //! <b>Returns</b>: An iterator which refers to the copy of the inserted character. iterator insert(const_iterator p, CharT c) { size_type new_offset = p - this->priv_addr(); this->insert(p, cvalue_iterator(c, 1), cvalue_iterator()); return this->priv_addr() + new_offset; } //! <b>Requires</b>: p is a valid iterator on *this. //! //! <b>Effects</b>: Inserts n copies of c before the character referred to by p. //! //! <b>Returns</b>: an iterator to the first inserted element or p if n is 0. iterator insert(const_iterator p, size_type n, CharT c) { return this->insert(p, cvalue_iterator(c, n), cvalue_iterator()); } //! <b>Requires</b>: p is a valid iterator on *this. [first,last) is a valid range. //! //! <b>Effects</b>: Equivalent to insert(p - begin(), basic_string(first, last)). //! //! <b>Returns</b>: an iterator to the first inserted element or p if first == last. template <class InputIter> iterator insert(const_iterator p, InputIter first, InputIter last #if !defined(BOOST_CONTAINER_DOXYGEN_INVOKED) , typename container_detail::enable_if_c < !container_detail::is_convertible<InputIter, size_type>::value && container_detail::is_input_iterator<InputIter>::value >::type * = 0 #endif ) { const size_type n_pos = p - this->cbegin(); for ( ; first != last; ++first, ++p) { p = this->insert(p, *first); } return this->begin() + n_pos; } #if !defined(BOOST_CONTAINER_DOXYGEN_INVOKED) template <class ForwardIter> iterator insert(const_iterator p, ForwardIter first, ForwardIter last , typename container_detail::enable_if_c < !container_detail::is_convertible<ForwardIter, size_type>::value && !container_detail::is_input_iterator<ForwardIter>::value >::type * = 0 ) { const size_type n_pos = p - this->cbegin(); if (first != last) { const size_type n = std::distance(first, last); const size_type old_size = this->priv_size(); const size_type remaining = this->capacity() - old_size; const pointer old_start = this->priv_addr(); bool enough_capacity = false; std::pair<pointer, bool> allocation_ret; size_type new_cap = 0; //Check if we have enough capacity if (remaining >= n){ enough_capacity = true; } else { //Otherwise expand current buffer or allocate new storage new_cap = this->next_capacity(n); allocation_ret = this->allocation_command (allocate_new | expand_fwd | expand_bwd, old_size + n + 1, new_cap, new_cap, old_start); //Check forward expansion if(old_start == allocation_ret.first){ enough_capacity = true; this->priv_storage(new_cap); } } //Reuse same buffer if(enough_capacity){ const size_type elems_after = old_size - (p - old_start); const size_type old_length = old_size; if (elems_after >= n) { const pointer pointer_past_last = old_start + old_size + 1; priv_uninitialized_copy(old_start + (old_size - n + 1), pointer_past_last, pointer_past_last); this->priv_size(old_size+n); Traits::move(const_cast<CharT*>(container_detail::to_raw_pointer(p + n)), container_detail::to_raw_pointer(p), (elems_after - n) + 1); this->priv_copy(first, last, const_cast<CharT*>(container_detail::to_raw_pointer(p))); } else { ForwardIter mid = first; std::advance(mid, elems_after + 1); priv_uninitialized_copy(mid, last, old_start + old_size + 1); const size_type newer_size = old_size + (n - elems_after); this->priv_size(newer_size); priv_uninitialized_copy (p, const_iterator(old_start + old_length + 1), old_start + newer_size); this->priv_size(newer_size + elems_after); this->priv_copy(first, mid, const_cast<CharT*>(container_detail::to_raw_pointer(p))); } } else{ pointer new_start = allocation_ret.first; if(!allocation_ret.second){ //Copy data to new buffer size_type new_length = 0; //This can't throw, since characters are POD new_length += priv_uninitialized_copy (const_iterator(old_start), p, new_start); new_length += priv_uninitialized_copy (first, last, new_start + new_length); new_length += priv_uninitialized_copy (p, const_iterator(old_start + old_size), new_start + new_length); this->priv_construct_null(new_start + new_length); this->deallocate_block(); this->is_short(false); this->priv_long_addr(new_start); this->priv_long_size(new_length); this->priv_long_storage(new_cap); } else{ //value_type is POD, so backwards expansion is much easier //than with vector<T> value_type * const oldbuf = container_detail::to_raw_pointer(old_start); value_type * const newbuf = container_detail::to_raw_pointer(new_start); const value_type *const pos = container_detail::to_raw_pointer(p); const size_type before = pos - oldbuf; //First move old data Traits::move(newbuf, oldbuf, before); Traits::move(newbuf + before + n, pos, old_size - before); //Now initialize the new data priv_uninitialized_copy(first, last, new_start + before); this->priv_construct_null(new_start + (old_size + n)); this->is_short(false); this->priv_long_addr(new_start); this->priv_long_size(old_size + n); this->priv_long_storage(new_cap); } } } return this->begin() + n_pos; } #endif //! <b>Requires</b>: pos <= size() //! //! <b>Effects</b>: Determines the effective length xlen of the string to be removed as the smaller of n and size() - pos. //! The function then replaces the string controlled by *this with a string of length size() - xlen //! whose first pos elements are a copy of the initial elements of the original string controlled by *this, //! and whose remaining elements are a copy of the elements of the original string controlled by *this //! beginning at position pos + xlen. //! //! <b>Throws</b>: out_of_range if pos > size(). //! //! <b>Returns</b>: *this basic_string& erase(size_type pos = 0, size_type n = npos) { if (pos > this->size()) throw_out_of_range("basic_string::erase out of range position"); const pointer addr = this->priv_addr(); erase(addr + pos, addr + pos + container_detail::min_value(n, this->size() - pos)); return *this; } //! <b>Effects</b>: Removes the character referred to by p. //! //! <b>Throws</b>: Nothing //! //! <b>Returns</b>: An iterator which points to the element immediately following p prior to the element being //! erased. If no such element exists, end() is returned. iterator erase(const_iterator p) BOOST_CONTAINER_NOEXCEPT { // The move includes the terminating null. CharT * const ptr = const_cast<CharT*>(container_detail::to_raw_pointer(p)); const size_type old_size = this->priv_size(); Traits::move(ptr, container_detail::to_raw_pointer(p + 1), old_size - (p - this->priv_addr())); this->priv_size(old_size-1); return iterator(ptr); } //! <b>Requires</b>: first and last are valid iterators on *this, defining a range [first,last). //! //! <b>Effects</b>: Removes the characters in the range [first,last). //! //! <b>Throws</b>: Nothing //! //! <b>Returns</b>: An iterator which points to the element pointed to by last prior to //! the other elements being erased. If no such element exists, end() is returned. iterator erase(const_iterator first, const_iterator last) BOOST_CONTAINER_NOEXCEPT { CharT * f = const_cast<CharT*>(container_detail::to_raw_pointer(first)); if (first != last) { // The move includes the terminating null. const size_type num_erased = last - first; const size_type old_size = this->priv_size(); Traits::move(f, container_detail::to_raw_pointer(last), (old_size + 1)-(last - this->priv_addr())); const size_type new_length = old_size - num_erased; this->priv_size(new_length); } return iterator(f); } //! <b>Requires</b>: !empty() //! //! <b>Throws</b>: Nothing //! //! <b>Effects</b>: Equivalent to erase(size() - 1, 1). void pop_back() BOOST_CONTAINER_NOEXCEPT { const size_type old_size = this->priv_size(); Traits::assign(this->priv_addr()[old_size-1], CharT(0)); this->priv_size(old_size-1);; } //! <b>Effects</b>: Erases all the elements of the vector. //! //! <b>Throws</b>: Nothing. //! //! <b>Complexity</b>: Linear to the number of elements in the vector. void clear() BOOST_CONTAINER_NOEXCEPT { if (!this->empty()) { Traits::assign(*this->priv_addr(), CharT(0)); this->priv_size(0); } } //! <b>Requires</b>: pos1 <= size(). //! //! <b>Effects</b>: Calls replace(pos1, n1, str.data(), str.size()). //! //! <b>Throws</b>: if memory allocation throws or out_of_range if pos1 > size(). //! //! <b>Returns</b>: *this basic_string& replace(size_type pos1, size_type n1, const basic_string& str) { if (pos1 > this->size()) throw_out_of_range("basic_string::replace out of range position"); const size_type len = container_detail::min_value(n1, this->size() - pos1); if (this->size() - len >= this->max_size() - str.size()) throw_length_error("basic_string::replace max_size() exceeded"); const pointer addr = this->priv_addr(); return this->replace( const_iterator(addr + pos1) , const_iterator(addr + pos1 + len) , str.begin(), str.end()); } //! <b>Requires</b>: pos1 <= size() and pos2 <= str.size(). //! //! <b>Effects</b>: Determines the effective length rlen of the string to be //! inserted as the smaller of n2 and str.size() - pos2 and calls //! replace(pos1, n1, str.data() + pos2, rlen). //! //! <b>Throws</b>: if memory allocation throws, out_of_range if pos1 > size() or pos2 > str.size(). //! //! <b>Returns</b>: *this basic_string& replace(size_type pos1, size_type n1, const basic_string& str, size_type pos2, size_type n2) { if (pos1 > this->size() || pos2 > str.size()) throw_out_of_range("basic_string::replace out of range position"); const size_type len1 = container_detail::min_value(n1, this->size() - pos1); const size_type len2 = container_detail::min_value(n2, str.size() - pos2); if (this->size() - len1 >= this->max_size() - len2) throw_length_error("basic_string::replace max_size() exceeded"); const pointer addr = this->priv_addr(); const pointer straddr = str.priv_addr(); return this->replace(addr + pos1, addr + pos1 + len1, straddr + pos2, straddr + pos2 + len2); } //! <b>Requires</b>: pos1 <= size() and s points to an array of at least n2 elements of CharT. //! //! <b>Effects</b>: Determines the effective length xlen of the string to be removed as the //! smaller of n1 and size() - pos1. If size() - xlen >= max_size() - n2 throws length_error. //! Otherwise, the function replaces the string controlled by *this with a string of //! length size() - xlen + n2 whose first pos1 elements are a copy of the initial elements //! of the original string controlled by *this, whose next n2 elements are a copy of the //! initial n2 elements of s, and whose remaining elements are a copy of the elements of //! the original string controlled by *this beginning at position pos + xlen. //! //! <b>Throws</b>: if memory allocation throws, out_of_range if pos1 > size() or length_error //! if the length of the resulting string would exceed max_size() //! //! <b>Returns</b>: *this basic_string& replace(size_type pos1, size_type n1, const CharT* s, size_type n2) { if (pos1 > this->size()) throw_out_of_range("basic_string::replace out of range position"); const size_type len = container_detail::min_value(n1, this->size() - pos1); if (n2 > this->max_size() || size() - len >= this->max_size() - n2) throw_length_error("basic_string::replace max_size() exceeded"); const pointer addr = this->priv_addr(); return this->replace(addr + pos1, addr + pos1 + len, s, s + n2); } //! <b>Requires</b>: pos1 <= size() and s points to an array of at least n2 elements of CharT. //! //! <b>Effects</b>: Determines the effective length xlen of the string to be removed as the smaller //! of n1 and size() - pos1. If size() - xlen >= max_size() - n2 throws length_error. Otherwise, //! the function replaces the string controlled by *this with a string of length size() - xlen + n2 //! whose first pos1 elements are a copy of the initial elements of the original string controlled //! by *this, whose next n2 elements are a copy of the initial n2 elements of s, and whose //! remaining elements are a copy of the elements of the original string controlled by *this //! beginning at position pos + xlen. //! //! <b>Throws</b>: if memory allocation throws, out_of_range if pos1 > size() or length_error //! if the length of the resulting string would exceed max_size() //! //! <b>Returns</b>: *this basic_string& replace(size_type pos, size_type n1, const CharT* s) { if (pos > this->size()) throw_out_of_range("basic_string::replace out of range position"); const size_type len = container_detail::min_value(n1, this->size() - pos); const size_type n2 = Traits::length(s); if (n2 > this->max_size() || this->size() - len >= this->max_size() - n2) throw_length_error("basic_string::replace max_size() exceeded"); const pointer addr = this->priv_addr(); return this->replace(addr + pos, addr + pos + len, s, s + Traits::length(s)); } //! <b>Requires</b>: pos1 <= size(). //! //! <b>Effects</b>: Equivalent to replace(pos1, n1, basic_string(n2, c)). //! //! <b>Throws</b>: if memory allocation throws, out_of_range if pos1 > size() or length_error //! if the length of the resulting string would exceed max_size() //! //! <b>Returns</b>: *this basic_string& replace(size_type pos1, size_type n1, size_type n2, CharT c) { if (pos1 > this->size()) throw_out_of_range("basic_string::replace out of range position"); const size_type len = container_detail::min_value(n1, this->size() - pos1); if (n2 > this->max_size() || this->size() - len >= this->max_size() - n2) throw_length_error("basic_string::replace max_size() exceeded"); const pointer addr = this->priv_addr(); return this->replace(addr + pos1, addr + pos1 + len, n2, c); } //! <b>Requires</b>: [begin(),i1) and [i1,i2) are valid ranges. //! //! <b>Effects</b>: Calls replace(i1 - begin(), i2 - i1, str). //! //! <b>Throws</b>: if memory allocation throws //! //! <b>Returns</b>: *this basic_string& replace(const_iterator i1, const_iterator i2, const basic_string& str) { return this->replace(i1, i2, str.begin(), str.end()); } //! <b>Requires</b>: [begin(),i1) and [i1,i2) are valid ranges and //! s points to an array of at least n elements //! //! <b>Effects</b>: Calls replace(i1 - begin(), i2 - i1, s, n). //! //! <b>Throws</b>: if memory allocation throws //! //! <b>Returns</b>: *this basic_string& replace(const_iterator i1, const_iterator i2, const CharT* s, size_type n) { return this->replace(i1, i2, s, s + n); } //! <b>Requires</b>: [begin(),i1) and [i1,i2) are valid ranges and s points to an //! array of at least traits::length(s) + 1 elements of CharT. //! //! <b>Effects</b>: Calls replace(i1 - begin(), i2 - i1, s, traits::length(s)). //! //! <b>Throws</b>: if memory allocation throws //! //! <b>Returns</b>: *this basic_string& replace(const_iterator i1, const_iterator i2, const CharT* s) { return this->replace(i1, i2, s, s + Traits::length(s)); } //! <b>Requires</b>: [begin(),i1) and [i1,i2) are valid ranges. //! //! <b>Effects</b>: Calls replace(i1 - begin(), i2 - i1, basic_string(n, c)). //! //! <b>Throws</b>: if memory allocation throws //! //! <b>Returns</b>: *this basic_string& replace(const_iterator i1, const_iterator i2, size_type n, CharT c) { const size_type len = static_cast<size_type>(i2 - i1); if (len >= n) { Traits::assign(const_cast<CharT*>(container_detail::to_raw_pointer(i1)), n, c); erase(i1 + n, i2); } else { Traits::assign(const_cast<CharT*>(container_detail::to_raw_pointer(i1)), len, c); insert(i2, n - len, c); } return *this; } //! <b>Requires</b>: [begin(),i1), [i1,i2) and [j1,j2) are valid ranges. //! //! <b>Effects</b>: Calls replace(i1 - begin(), i2 - i1, basic_string(j1, j2)). //! //! <b>Throws</b>: if memory allocation throws //! //! <b>Returns</b>: *this template <class InputIter> basic_string& replace(const_iterator i1, const_iterator i2, InputIter j1, InputIter j2 #if !defined(BOOST_CONTAINER_DOXYGEN_INVOKED) , typename container_detail::enable_if_c < !container_detail::is_convertible<InputIter, size_type>::value && container_detail::is_input_iterator<InputIter>::value >::type * = 0 #endif ) { for ( ; i1 != i2 && j1 != j2; ++i1, ++j1){ Traits::assign(*const_cast<CharT*>(container_detail::to_raw_pointer(i1)), *j1); } if (j1 == j2) this->erase(i1, i2); else this->insert(i2, j1, j2); return *this; } #if !defined(BOOST_CONTAINER_DOXYGEN_INVOKED) template <class ForwardIter> basic_string& replace(const_iterator i1, const_iterator i2, ForwardIter j1, ForwardIter j2 , typename container_detail::enable_if_c < !container_detail::is_convertible<ForwardIter, size_type>::value && !container_detail::is_input_iterator<ForwardIter>::value >::type * = 0 ) { difference_type n = std::distance(j1, j2); const difference_type len = i2 - i1; if (len >= n) { this->priv_copy(j1, j2, const_cast<CharT*>(container_detail::to_raw_pointer(i1))); this->erase(i1 + n, i2); } else { ForwardIter m = j1; std::advance(m, len); this->priv_copy(j1, m, const_cast<CharT*>(container_detail::to_raw_pointer(i1))); this->insert(i2, m, j2); } return *this; } #endif //! <b>Requires</b>: pos <= size() //! //! <b>Effects</b>: Determines the effective length rlen of the string to copy as the //! smaller of n and size() - pos. s shall designate an array of at least rlen elements. //! The function then replaces the string designated by s with a string of length rlen //! whose elements are a copy of the string controlled by *this beginning at position pos. //! The function does not append a null object to the string designated by s. //! //! <b>Throws</b>: if memory allocation throws, out_of_range if pos > size(). //! //! <b>Returns</b>: rlen size_type copy(CharT* s, size_type n, size_type pos = 0) const { if (pos > this->size()) throw_out_of_range("basic_string::copy out of range position"); const size_type len = container_detail::min_value(n, this->size() - pos); Traits::copy(s, container_detail::to_raw_pointer(this->priv_addr() + pos), len); return len; } //! <b>Effects</b>: *this contains the same sequence of characters that was in s, //! s contains the same sequence of characters that was in *this. //! //! <b>Throws</b>: Nothing void swap(basic_string& x) { this->base_t::swap_data(x); container_detail::bool_<allocator_traits_type::propagate_on_container_swap::value> flag; container_detail::swap_alloc(this->alloc(), x.alloc(), flag); } ////////////////////////////////////////////// // // data access // ////////////////////////////////////////////// //! <b>Requires</b>: The program shall not alter any of the values stored in the character array. //! //! <b>Returns</b>: Allocator pointer p such that p + i == &operator[](i) for each i in [0,size()]. //! //! <b>Complexity</b>: constant time. const CharT* c_str() const BOOST_CONTAINER_NOEXCEPT { return container_detail::to_raw_pointer(this->priv_addr()); } //! <b>Requires</b>: The program shall not alter any of the values stored in the character array. //! //! <b>Returns</b>: Allocator pointer p such that p + i == &operator[](i) for each i in [0,size()]. //! //! <b>Complexity</b>: constant time. const CharT* data() const BOOST_CONTAINER_NOEXCEPT { return container_detail::to_raw_pointer(this->priv_addr()); } ////////////////////////////////////////////// // // string operations // ////////////////////////////////////////////// //! <b>Effects</b>: Determines the lowest position xpos, if possible, such that both //! of the following conditions obtain: 19 pos <= xpos and xpos + str.size() <= size(); //! 2) traits::eq(at(xpos+I), str.at(I)) for all elements I of the string controlled by str. //! //! <b>Throws</b>: Nothing //! //! <b>Returns</b>: xpos if the function can determine such a value for xpos. Otherwise, returns npos. size_type find(const basic_string& s, size_type pos = 0) const { return find(s.c_str(), pos, s.size()); } //! <b>Requires</b>: s points to an array of at least n elements of CharT. //! //! <b>Throws</b>: Nothing //! //! <b>Returns</b>: find(basic_string<CharT,traits,Allocator>(s,n),pos). size_type find(const CharT* s, size_type pos, size_type n) const { if (pos + n > this->size()) return npos; else { const pointer addr = this->priv_addr(); pointer finish = addr + this->priv_size(); const const_iterator result = std::search(container_detail::to_raw_pointer(addr + pos), container_detail::to_raw_pointer(finish), s, s + n, Eq_traits<Traits>()); return result != finish ? result - begin() : npos; } } //! <b>Requires</b>: s points to an array of at least traits::length(s) + 1 elements of CharT. //! //! <b>Throws</b>: Nothing //! //! <b>Returns</b>: find(basic_string(s), pos). size_type find(const CharT* s, size_type pos = 0) const { return this->find(s, pos, Traits::length(s)); } //! <b>Throws</b>: Nothing //! //! <b>Returns</b>: find(basic_string<CharT,traits,Allocator>(1,c), pos). size_type find(CharT c, size_type pos = 0) const { const size_type sz = this->size(); if (pos >= sz) return npos; else { const pointer addr = this->priv_addr(); pointer finish = addr + sz; const const_iterator result = std::find_if(addr + pos, finish, std::bind2nd(Eq_traits<Traits>(), c)); return result != finish ? result - begin() : npos; } } //! <b>Effects</b>: Determines the highest position xpos, if possible, such //! that both of the following conditions obtain: //! a) xpos <= pos and xpos + str.size() <= size(); //! b) traits::eq(at(xpos+I), str.at(I)) for all elements I of the string controlled by str. //! //! <b>Throws</b>: Nothing //! //! <b>Returns</b>: xpos if the function can determine such a value for xpos. Otherwise, returns npos. size_type rfind(const basic_string& str, size_type pos = npos) const { return rfind(str.c_str(), pos, str.size()); } //! <b>Requires</b>: s points to an array of at least n elements of CharT. //! //! <b>Throws</b>: Nothing //! //! <b>Returns</b>: rfind(basic_string(s, n), pos). size_type rfind(const CharT* s, size_type pos, size_type n) const { const size_type len = this->size(); if (n > len) return npos; else if (n == 0) return container_detail::min_value(len, pos); else { const const_iterator last = begin() + container_detail::min_value(len - n, pos) + n; const const_iterator result = find_end(begin(), last, s, s + n, Eq_traits<Traits>()); return result != last ? result - begin() : npos; } } //! <b>Requires</b>: pos <= size() and s points to an array of at least //! traits::length(s) + 1 elements of CharT. //! //! <b>Throws</b>: Nothing //! //! <b>Returns</b>: rfind(basic_string(s), pos). size_type rfind(const CharT* s, size_type pos = npos) const { return rfind(s, pos, Traits::length(s)); } //! <b>Throws</b>: Nothing //! //! <b>Returns</b>: rfind(basic_string<CharT,traits,Allocator>(1,c),pos). size_type rfind(CharT c, size_type pos = npos) const { const size_type len = this->size(); if (len < 1) return npos; else { const const_iterator last = begin() + container_detail::min_value(len - 1, pos) + 1; const_reverse_iterator rresult = std::find_if(const_reverse_iterator(last), rend(), std::bind2nd(Eq_traits<Traits>(), c)); return rresult != rend() ? (rresult.base() - 1) - begin() : npos; } } //! <b>Effects</b>: Determines the lowest position xpos, if possible, such that both of the //! following conditions obtain: a) pos <= xpos and xpos < size(); //! b) traits::eq(at(xpos), str.at(I)) for some element I of the string controlled by str. //! //! <b>Throws</b>: Nothing //! //! <b>Returns</b>: xpos if the function can determine such a value for xpos. Otherwise, returns npos. size_type find_first_of(const basic_string& s, size_type pos = 0) const { return find_first_of(s.c_str(), pos, s.size()); } //! <b>Requires</b>: s points to an array of at least n elements of CharT. //! //! <b>Throws</b>: Nothing //! //! <b>Returns</b>: find_first_of(basic_string(s, n), pos). size_type find_first_of(const CharT* s, size_type pos, size_type n) const { const size_type sz = this->size(); if (pos >= sz) return npos; else { const pointer addr = this->priv_addr(); pointer finish = addr + sz; const_iterator result = std::find_first_of (addr + pos, finish, s, s + n, Eq_traits<Traits>()); return result != finish ? result - this->begin() : npos; } } //! <b>Requires</b>: s points to an array of at least traits::length(s) + 1 elements of CharT. //! //! <b>Throws</b>: Nothing //! //! <b>Returns</b>: find_first_of(basic_string(s), pos). size_type find_first_of(const CharT* s, size_type pos = 0) const { return find_first_of(s, pos, Traits::length(s)); } //! <b>Requires</b>: s points to an array of at least traits::length(s) + 1 elements of CharT. //! //! <b>Throws</b>: Nothing //! //! <b>Returns</b>: find_first_of(basic_string<CharT,traits,Allocator>(1,c), pos). size_type find_first_of(CharT c, size_type pos = 0) const { return find(c, pos); } //! <b>Effects</b>: Determines the highest position xpos, if possible, such that both of //! the following conditions obtain: a) xpos <= pos and xpos < size(); b) //! traits::eq(at(xpos), str.at(I)) for some element I of the string controlled by str. //! //! <b>Throws</b>: Nothing //! //! <b>Returns</b>: xpos if the function can determine such a value for xpos. Otherwise, returns npos. size_type find_last_of(const basic_string& str, size_type pos = npos) const { return find_last_of(str.c_str(), pos, str.size()); } //! <b>Requires</b>: s points to an array of at least n elements of CharT. //! //! <b>Throws</b>: Nothing //! //! <b>Returns</b>: find_last_of(basic_string(s, n), pos). size_type find_last_of(const CharT* s, size_type pos, size_type n) const { const size_type len = this->size(); if (len < 1) return npos; else { const pointer addr = this->priv_addr(); const const_iterator last = addr + container_detail::min_value(len - 1, pos) + 1; const const_reverse_iterator rresult = std::find_first_of(const_reverse_iterator(last), rend(), s, s + n, Eq_traits<Traits>()); return rresult != rend() ? (rresult.base() - 1) - addr : npos; } } //! <b>Requires</b>: s points to an array of at least traits::length(s) + 1 elements of CharT. //! //! <b>Throws</b>: Nothing //! //! <b>Returns</b>: find_last_of(basic_string<CharT,traits,Allocator>(1,c),pos). size_type find_last_of(const CharT* s, size_type pos = npos) const { return find_last_of(s, pos, Traits::length(s)); } //! <b>Throws</b>: Nothing //! //! <b>Returns</b>: find_last_of(basic_string(s), pos). size_type find_last_of(CharT c, size_type pos = npos) const { return rfind(c, pos); } //! <b>Effects</b>: Determines the lowest position xpos, if possible, such that //! both of the following conditions obtain: //! a) pos <= xpos and xpos < size(); b) traits::eq(at(xpos), str.at(I)) for no //! element I of the string controlled by str. //! //! <b>Throws</b>: Nothing //! //! <b>Returns</b>: xpos if the function can determine such a value for xpos. Otherwise, returns npos. size_type find_first_not_of(const basic_string& str, size_type pos = 0) const { return find_first_not_of(str.c_str(), pos, str.size()); } //! <b>Requires</b>: s points to an array of at least traits::length(s) + 1 elements of CharT. //! //! <b>Throws</b>: Nothing //! //! <b>Returns</b>: find_first_not_of(basic_string(s, n), pos). size_type find_first_not_of(const CharT* s, size_type pos, size_type n) const { if (pos > this->size()) return npos; else { const pointer addr = this->priv_addr(); const pointer finish = addr + this->priv_size(); const const_iterator result = std::find_if (addr + pos, finish, Not_within_traits<Traits>(s, s + n)); return result != finish ? result - addr : npos; } } //! <b>Requires</b>: s points to an array of at least traits::length(s) + 1 elements of CharT. //! //! <b>Throws</b>: Nothing //! //! <b>Returns</b>: find_first_not_of(basic_string(s), pos). size_type find_first_not_of(const CharT* s, size_type pos = 0) const { return find_first_not_of(s, pos, Traits::length(s)); } //! <b>Throws</b>: Nothing //! //! <b>Returns</b>: find_first_not_of(basic_string(1, c), pos). size_type find_first_not_of(CharT c, size_type pos = 0) const { if (pos > this->size()) return npos; else { const pointer addr = this->priv_addr(); const pointer finish = addr + this->priv_size(); const const_iterator result = std::find_if(addr + pos, finish, std::not1(std::bind2nd(Eq_traits<Traits>(), c))); return result != finish ? result - begin() : npos; } } //! <b>Effects</b>: Determines the highest position xpos, if possible, such that //! both of the following conditions obtain: a) xpos <= pos and xpos < size(); //! b) traits::eq(at(xpos), str.at(I)) for no element I of the string controlled by str. //! //! <b>Throws</b>: Nothing //! //! <b>Returns</b>: xpos if the function can determine such a value for xpos. Otherwise, returns npos. size_type find_last_not_of(const basic_string& str, size_type pos = npos) const { return find_last_not_of(str.c_str(), pos, str.size()); } //! <b>Requires</b>: s points to an array of at least n elements of CharT. //! //! <b>Throws</b>: Nothing //! //! <b>Returns</b>: find_last_not_of(basic_string(s, n), pos). size_type find_last_not_of(const CharT* s, size_type pos, size_type n) const { const size_type len = this->size(); if (len < 1) return npos; else { const const_iterator last = begin() + container_detail::min_value(len - 1, pos) + 1; const const_reverse_iterator rresult = std::find_if(const_reverse_iterator(last), rend(), Not_within_traits<Traits>(s, s + n)); return rresult != rend() ? (rresult.base() - 1) - begin() : npos; } } //! <b>Requires</b>: s points to an array of at least traits::length(s) + 1 elements of CharT. //! //! <b>Throws</b>: Nothing //! //! <b>Returns</b>: find_last_not_of(basic_string(s), pos). size_type find_last_not_of(const CharT* s, size_type pos = npos) const { return find_last_not_of(s, pos, Traits::length(s)); } //! <b>Throws</b>: Nothing //! //! <b>Returns</b>: find_last_not_of(basic_string(1, c), pos). size_type find_last_not_of(CharT c, size_type pos = npos) const { const size_type len = this->size(); if (len < 1) return npos; else { const const_iterator last = begin() + container_detail::min_value(len - 1, pos) + 1; const const_reverse_iterator rresult = std::find_if(const_reverse_iterator(last), rend(), std::not1(std::bind2nd(Eq_traits<Traits>(), c))); return rresult != rend() ? (rresult.base() - 1) - begin() : npos; } } //! <b>Requires</b>: Requires: pos <= size() //! //! <b>Effects</b>: Determines the effective length rlen of the string to copy as //! the smaller of n and size() - pos. //! //! <b>Throws</b>: If memory allocation throws or out_of_range if pos > size(). //! //! <b>Returns</b>: basic_string<CharT,traits,Allocator>(data()+pos,rlen). basic_string substr(size_type pos = 0, size_type n = npos) const { if (pos > this->size()) throw_out_of_range("basic_string::substr out of range position"); const pointer addr = this->priv_addr(); return basic_string(addr + pos, addr + pos + container_detail::min_value(n, size() - pos), this->alloc()); } //! <b>Effects</b>: Determines the effective length rlen of the string to copy as //! the smaller of size() and str.size(). The function then compares the two strings by //! calling traits::compare(data(), str.data(), rlen). //! //! <b>Throws</b>: Nothing //! //! <b>Returns</b>: The nonzero result if the result of the comparison is nonzero. //! Otherwise, returns a value < 0 if size() < str.size(), a 0 value if size() == str.size(), //! and value > 0 if size() > str.size() int compare(const basic_string& str) const { const pointer addr = this->priv_addr(); const pointer str_addr = str.priv_addr(); return s_compare(addr, addr + this->priv_size(), str_addr, str_addr + str.priv_size()); } //! <b>Requires</b>: pos1 <= size() //! //! <b>Effects</b>: Determines the effective length rlen of the string to copy as //! the smaller of //! //! <b>Throws</b>: out_of_range if pos1 > size() //! //! <b>Returns</b>:basic_string(*this,pos1,n1).compare(str). int compare(size_type pos1, size_type n1, const basic_string& str) const { if (pos1 > this->size()) throw_out_of_range("basic_string::compare out of range position"); const pointer addr = this->priv_addr(); const pointer str_addr = str.priv_addr(); return s_compare(addr + pos1, addr + pos1 + container_detail::min_value(n1, this->size() - pos1), str_addr, str_addr + str.priv_size()); } //! <b>Requires</b>: pos1 <= size() and pos2 <= str.size() //! //! <b>Effects</b>: Determines the effective length rlen of the string to copy as //! the smaller of //! //! <b>Throws</b>: out_of_range if pos1 > size() or pos2 > str.size() //! //! <b>Returns</b>: basic_string(*this, pos1, n1).compare(basic_string(str, pos2, n2)). int compare(size_type pos1, size_type n1, const basic_string& str, size_type pos2, size_type n2) const { if (pos1 > this->size() || pos2 > str.size()) throw_out_of_range("basic_string::compare out of range position"); const pointer addr = this->priv_addr(); const pointer str_addr = str.priv_addr(); return s_compare(addr + pos1, addr + pos1 + container_detail::min_value(n1, this->size() - pos1), str_addr + pos2, str_addr + pos2 + container_detail::min_value(n2, str.size() - pos2)); } //! <b>Throws</b>: Nothing //! //! <b>Returns</b>: compare(basic_string(s)). int compare(const CharT* s) const { const pointer addr = this->priv_addr(); return s_compare(addr, addr + this->priv_size(), s, s + Traits::length(s)); } //! <b>Requires</b>: pos1 > size() and s points to an array of at least n2 elements of CharT. //! //! <b>Throws</b>: out_of_range if pos1 > size() //! //! <b>Returns</b>: basic_string(*this, pos, n1).compare(basic_string(s, n2)). int compare(size_type pos1, size_type n1, const CharT* s, size_type n2) const { if (pos1 > this->size()) throw_out_of_range("basic_string::compare out of range position"); const pointer addr = this->priv_addr(); return s_compare( addr + pos1, addr + pos1 + container_detail::min_value(n1, this->size() - pos1), s, s + n2); } //! <b>Requires</b>: pos1 > size() and s points to an array of at least traits::length(s) + 1 elements of CharT. //! //! <b>Throws</b>: out_of_range if pos1 > size() //! //! <b>Returns</b>: basic_string(*this, pos, n1).compare(basic_string(s, n2)). int compare(size_type pos1, size_type n1, const CharT* s) const { return this->compare(pos1, n1, s, Traits::length(s)); } #ifndef BOOST_CONTAINER_DOXYGEN_INVOKED private: void priv_reserve(size_type res_arg, const bool null_terminate = true) { if (res_arg > this->max_size()){ throw_length_error("basic_string::reserve max_size() exceeded"); } if (this->capacity() < res_arg){ size_type n = container_detail::max_value(res_arg, this->size()) + 1; size_type new_cap = this->next_capacity(n); pointer new_start = this->allocation_command (allocate_new, n, new_cap, new_cap).first; size_type new_length = 0; const pointer addr = this->priv_addr(); new_length += priv_uninitialized_copy (addr, addr + this->priv_size(), new_start); if(null_terminate){ this->priv_construct_null(new_start + new_length); } this->deallocate_block(); this->is_short(false); this->priv_long_addr(new_start); this->priv_long_size(new_length); this->priv_storage(new_cap); } } static int s_compare(const_pointer f1, const_pointer l1, const_pointer f2, const_pointer l2) { const difference_type n1 = l1 - f1; const difference_type n2 = l2 - f2; const int cmp = Traits::compare(container_detail::to_raw_pointer(f1), container_detail::to_raw_pointer(f2), container_detail::min_value(n1, n2)); return cmp != 0 ? cmp : (n1 < n2 ? -1 : (n1 > n2 ? 1 : 0)); } template<class AllocVersion> void priv_shrink_to_fit_dynamic_buffer ( AllocVersion , typename container_detail::enable_if<container_detail::is_same<AllocVersion, allocator_v1> >::type* = 0) { //Allocate a new buffer. size_type real_cap = 0; const pointer long_addr = this->priv_long_addr(); const size_type long_size = this->priv_long_size(); const size_type long_storage = this->priv_long_storage(); //We can make this nothrow as chars are always NoThrowCopyables BOOST_TRY{ const std::pair<pointer, bool> ret = this->allocation_command (allocate_new, long_size+1, long_size+1, real_cap, long_addr); //Copy and update Traits::copy( container_detail::to_raw_pointer(ret.first) , container_detail::to_raw_pointer(this->priv_long_addr()) , long_size+1); this->priv_long_addr(ret.first); this->priv_storage(real_cap); //And release old buffer this->alloc().deallocate(long_addr, long_storage); } BOOST_CATCH(...){ return; } BOOST_CATCH_END } template<class AllocVersion> void priv_shrink_to_fit_dynamic_buffer ( AllocVersion , typename container_detail::enable_if<container_detail::is_same<AllocVersion, allocator_v2> >::type* = 0) { size_type received_size; if(this->alloc().allocation_command ( shrink_in_place | nothrow_allocation , this->priv_long_storage(), this->priv_long_size()+1 , received_size, this->priv_long_addr()).first){ this->priv_storage(received_size); } } void priv_construct_null(pointer p) { this->construct(p, CharT(0)); } // Helper functions used by constructors. It is a severe error for // any of them to be called anywhere except from within constructors. void priv_terminate_string() { this->priv_construct_null(this->priv_end_addr()); } template<class FwdIt, class Count> inline void priv_uninitialized_fill_n(FwdIt first, Count count, const CharT val) { //Save initial position FwdIt init = first; BOOST_TRY{ //Construct objects for (; count--; ++first){ this->construct(first, val); } } BOOST_CATCH(...){ //Call destructors for (; init != first; ++init){ this->destroy(init); } BOOST_RETHROW } BOOST_CATCH_END } template<class InpIt, class FwdIt> inline size_type priv_uninitialized_copy(InpIt first, InpIt last, FwdIt dest) { //Save initial destination position FwdIt dest_init = dest; size_type constructed = 0; BOOST_TRY{ //Try to build objects for (; first != last; ++dest, ++first, ++constructed){ this->construct(dest, *first); } } BOOST_CATCH(...){ //Call destructors for (; constructed--; ++dest_init){ this->destroy(dest_init); } BOOST_RETHROW } BOOST_CATCH_END return (constructed); } template <class InputIterator, class OutIterator> void priv_copy(InputIterator first, InputIterator last, OutIterator result) { for ( ; first != last; ++first, ++result) Traits::assign(*result, *first); } void priv_copy(const CharT* first, const CharT* last, CharT* result) { Traits::copy(result, first, last - first); } template <class Integer> basic_string& priv_replace_dispatch(const_iterator first, const_iterator last, Integer n, Integer x, container_detail::true_) { return this->replace(first, last, (size_type) n, (CharT) x); } template <class InputIter> basic_string& priv_replace_dispatch(const_iterator first, const_iterator last, InputIter f, InputIter l, container_detail::false_) { typedef typename std::iterator_traits<InputIter>::iterator_category Category; return this->priv_replace(first, last, f, l, Category()); } #endif //#ifndef BOOST_CONTAINER_DOXYGEN_INVOKED }; #ifdef BOOST_CONTAINER_DOXYGEN_INVOKED //!Typedef for a basic_string of //!narrow characters typedef basic_string <char ,std::char_traits<char> ,std::allocator<char> > string; //!Typedef for a basic_string of //!narrow characters typedef basic_string <wchar_t ,std::char_traits<wchar_t> ,std::allocator<wchar_t> > wstring; #endif // ------------------------------------------------------------ // Non-member functions. // Operator+ template <class CharT, class Traits, class Allocator> inline basic_string<CharT,Traits,Allocator> operator+(const basic_string<CharT,Traits,Allocator>& x ,const basic_string<CharT,Traits,Allocator>& y) { typedef basic_string<CharT,Traits,Allocator> str_t; typedef typename str_t::reserve_t reserve_t; reserve_t reserve; str_t result(reserve, x.size() + y.size(), x.get_stored_allocator()); result.append(x); result.append(y); return result; } template <class CharT, class Traits, class Allocator> inline basic_string<CharT, Traits, Allocator> operator+ ( BOOST_RV_REF_BEG basic_string<CharT, Traits, Allocator> BOOST_RV_REF_END mx , BOOST_RV_REF_BEG basic_string<CharT, Traits, Allocator> BOOST_RV_REF_END my) { mx += my; return boost::move(mx); } template <class CharT, class Traits, class Allocator> inline basic_string<CharT, Traits, Allocator> operator+ ( BOOST_RV_REF_BEG basic_string<CharT, Traits, Allocator> BOOST_RV_REF_END mx , const basic_string<CharT,Traits,Allocator>& y) { mx += y; return boost::move(mx); } template <class CharT, class Traits, class Allocator> inline basic_string<CharT, Traits, Allocator> operator+ (const basic_string<CharT,Traits,Allocator>& x ,BOOST_RV_REF_BEG basic_string<CharT, Traits, Allocator> BOOST_RV_REF_END my) { my.insert(my.begin(), x.begin(), x.end()); return boost::move(my); } template <class CharT, class Traits, class Allocator> inline basic_string<CharT, Traits, Allocator> operator+ (const CharT* s, basic_string<CharT, Traits, Allocator> y) { y.insert(y.begin(), s, s + Traits::length(s)); return y; } template <class CharT, class Traits, class Allocator> inline basic_string<CharT,Traits,Allocator> operator+ (basic_string<CharT,Traits,Allocator> x, const CharT* s) { x += s; return x; } template <class CharT, class Traits, class Allocator> inline basic_string<CharT,Traits,Allocator> operator+ (CharT c, basic_string<CharT,Traits,Allocator> y) { y.insert(y.begin(), c); return y; } template <class CharT, class Traits, class Allocator> inline basic_string<CharT,Traits,Allocator> operator+ (basic_string<CharT,Traits,Allocator> x, const CharT c) { x += c; return x; } // Operator== and operator!= template <class CharT, class Traits, class Allocator> inline bool operator==(const basic_string<CharT,Traits,Allocator>& x, const basic_string<CharT,Traits,Allocator>& y) { return x.size() == y.size() && Traits::compare(x.data(), y.data(), x.size()) == 0; } template <class CharT, class Traits, class Allocator> inline bool operator==(const CharT* s, const basic_string<CharT,Traits,Allocator>& y) { typename basic_string<CharT,Traits,Allocator>::size_type n = Traits::length(s); return n == y.size() && Traits::compare(s, y.data(), n) == 0; } template <class CharT, class Traits, class Allocator> inline bool operator==(const basic_string<CharT,Traits,Allocator>& x, const CharT* s) { typename basic_string<CharT,Traits,Allocator>::size_type n = Traits::length(s); return x.size() == n && Traits::compare(x.data(), s, n) == 0; } template <class CharT, class Traits, class Allocator> inline bool operator!=(const basic_string<CharT,Traits,Allocator>& x, const basic_string<CharT,Traits,Allocator>& y) { return !(x == y); } template <class CharT, class Traits, class Allocator> inline bool operator!=(const CharT* s, const basic_string<CharT,Traits,Allocator>& y) { return !(s == y); } template <class CharT, class Traits, class Allocator> inline bool operator!=(const basic_string<CharT,Traits,Allocator>& x, const CharT* s) { return !(x == s); } // Operator< (and also >, <=, and >=). template <class CharT, class Traits, class Allocator> inline bool operator<(const basic_string<CharT,Traits,Allocator>& x, const basic_string<CharT,Traits,Allocator>& y) { return x.compare(y) < 0; // return basic_string<CharT,Traits,Allocator> // ::s_compare(x.begin(), x.end(), y.begin(), y.end()) < 0; } template <class CharT, class Traits, class Allocator> inline bool operator<(const CharT* s, const basic_string<CharT,Traits,Allocator>& y) { return y.compare(s) > 0; // basic_string<CharT,Traits,Allocator>::size_type n = Traits::length(s); // return basic_string<CharT,Traits,Allocator> // ::s_compare(s, s + n, y.begin(), y.end()) < 0; } template <class CharT, class Traits, class Allocator> inline bool operator<(const basic_string<CharT,Traits,Allocator>& x, const CharT* s) { return x.compare(s) < 0; // basic_string<CharT,Traits,Allocator>::size_type n = Traits::length(s); // return basic_string<CharT,Traits,Allocator> // ::s_compare(x.begin(), x.end(), s, s + n) < 0; } template <class CharT, class Traits, class Allocator> inline bool operator>(const basic_string<CharT,Traits,Allocator>& x, const basic_string<CharT,Traits,Allocator>& y) { return y < x; } template <class CharT, class Traits, class Allocator> inline bool operator>(const CharT* s, const basic_string<CharT,Traits,Allocator>& y) { return y < s; } template <class CharT, class Traits, class Allocator> inline bool operator>(const basic_string<CharT,Traits,Allocator>& x, const CharT* s) { return s < x; } template <class CharT, class Traits, class Allocator> inline bool operator<=(const basic_string<CharT,Traits,Allocator>& x, const basic_string<CharT,Traits,Allocator>& y) { return !(y < x); } template <class CharT, class Traits, class Allocator> inline bool operator<=(const CharT* s, const basic_string<CharT,Traits,Allocator>& y) { return !(y < s); } template <class CharT, class Traits, class Allocator> inline bool operator<=(const basic_string<CharT,Traits,Allocator>& x, const CharT* s) { return !(s < x); } template <class CharT, class Traits, class Allocator> inline bool operator>=(const basic_string<CharT,Traits,Allocator>& x, const basic_string<CharT,Traits,Allocator>& y) { return !(x < y); } template <class CharT, class Traits, class Allocator> inline bool operator>=(const CharT* s, const basic_string<CharT,Traits,Allocator>& y) { return !(s < y); } template <class CharT, class Traits, class Allocator> inline bool operator>=(const basic_string<CharT,Traits,Allocator>& x, const CharT* s) { return !(x < s); } // Swap. template <class CharT, class Traits, class Allocator> inline void swap(basic_string<CharT,Traits,Allocator>& x, basic_string<CharT,Traits,Allocator>& y) { x.swap(y); } #ifndef BOOST_CONTAINER_DOXYGEN_INVOKED // I/O. namespace container_detail { template <class CharT, class Traits> inline bool string_fill(std::basic_ostream<CharT, Traits>& os, std::basic_streambuf<CharT, Traits>* buf, std::size_t n) { CharT f = os.fill(); std::size_t i; bool ok = true; for (i = 0; i < n; i++) ok = ok && !Traits::eq_int_type(buf->sputc(f), Traits::eof()); return ok; } } //namespace container_detail { #endif //#ifndef BOOST_CONTAINER_DOXYGEN_INVOKED template <class CharT, class Traits, class Allocator> std::basic_ostream<CharT, Traits>& operator<<(std::basic_ostream<CharT, Traits>& os, const basic_string<CharT,Traits,Allocator>& s) { typename std::basic_ostream<CharT, Traits>::sentry sentry(os); bool ok = false; if (sentry) { ok = true; typename basic_string<CharT,Traits,Allocator>::size_type n = s.size(); typename basic_string<CharT,Traits,Allocator>::size_type pad_len = 0; const bool left = (os.flags() & std::ios::left) != 0; const std::size_t w = os.width(0); std::basic_streambuf<CharT, Traits>* buf = os.rdbuf(); if (w != 0 && n < w) pad_len = w - n; if (!left) ok = container_detail::string_fill(os, buf, pad_len); ok = ok && buf->sputn(s.data(), std::streamsize(n)) == std::streamsize(n); if (left) ok = ok && container_detail::string_fill(os, buf, pad_len); } if (!ok) os.setstate(std::ios_base::failbit); return os; } template <class CharT, class Traits, class Allocator> std::basic_istream<CharT, Traits>& operator>>(std::basic_istream<CharT, Traits>& is, basic_string<CharT,Traits,Allocator>& s) { typename std::basic_istream<CharT, Traits>::sentry sentry(is); if (sentry) { std::basic_streambuf<CharT, Traits>* buf = is.rdbuf(); const std::ctype<CharT>& ctype = std::use_facet<std::ctype<CharT> >(is.getloc()); s.clear(); std::size_t n = is.width(0); if (n == 0) n = static_cast<std::size_t>(-1); else s.reserve(n); while (n-- > 0) { typename Traits::int_type c1 = buf->sbumpc(); if (Traits::eq_int_type(c1, Traits::eof())) { is.setstate(std::ios_base::eofbit); break; } else { CharT c = Traits::to_char_type(c1); if (ctype.is(std::ctype<CharT>::space, c)) { if (Traits::eq_int_type(buf->sputbackc(c), Traits::eof())) is.setstate(std::ios_base::failbit); break; } else s.push_back(c); } } // If we have read no characters, then set failbit. if (s.size() == 0) is.setstate(std::ios_base::failbit); } else is.setstate(std::ios_base::failbit); return is; } template <class CharT, class Traits, class Allocator> std::basic_istream<CharT, Traits>& getline(std::istream& is, basic_string<CharT,Traits,Allocator>& s,CharT delim) { typename basic_string<CharT,Traits,Allocator>::size_type nread = 0; typename std::basic_istream<CharT, Traits>::sentry sentry(is, true); if (sentry) { std::basic_streambuf<CharT, Traits>* buf = is.rdbuf(); s.clear(); while (nread < s.max_size()) { int c1 = buf->sbumpc(); if (Traits::eq_int_type(c1, Traits::eof())) { is.setstate(std::ios_base::eofbit); break; } else { ++nread; CharT c = Traits::to_char_type(c1); if (!Traits::eq(c, delim)) s.push_back(c); else break; // Character is extracted but not appended. } } } if (nread == 0 || nread >= s.max_size()) is.setstate(std::ios_base::failbit); return is; } template <class CharT, class Traits, class Allocator> inline std::basic_istream<CharT, Traits>& getline(std::basic_istream<CharT, Traits>& is, basic_string<CharT,Traits,Allocator>& s) { return getline(is, s, '\n'); } template <class Ch, class Allocator> inline std::size_t hash_value(basic_string<Ch, std::char_traits<Ch>, Allocator> const& v) { return hash_range(v.begin(), v.end()); } }} #ifndef BOOST_CONTAINER_DOXYGEN_INVOKED namespace boost { //!has_trivial_destructor_after_move<> == true_type //!specialization for optimizations template <class C, class T, class Allocator> struct has_trivial_destructor_after_move<boost::container::basic_string<C, T, Allocator> > : public ::boost::has_trivial_destructor_after_move<Allocator> {}; } #endif //#ifndef BOOST_CONTAINER_DOXYGEN_INVOKED #include <boost/container/detail/config_end.hpp> #endif // BOOST_CONTAINER_STRING_HPP