} #endif _Self_destruct_ptr __left(_My_rope::_S_substring(__old, 0, _M_pos)); _Self_destruct_ptr __right(_My_rope::_S_substring(__old, _M_pos + 1, __old->_M_size)); _Self_destruct_ptr __result_left(_My_rope:: _S_destr_concat_char_iter(__left, &__c, 1)); _RopeRep* __result = _My_rope::_S_concat(__result_left, __right); #ifndef __GC _RopeRep::_S_unref(__old); #endif _M_root->_M_tree_ptr = __result; return *this; } template inline _Rope_char_ref_proxy<_CharT, _Alloc>:: operator _CharT() const { if (_M_current_valid) return _M_current; else return _My_rope::_S_fetch(_M_root->_M_tree_ptr, _M_pos); } template _Rope_char_ptr_proxy<_CharT, _Alloc> _Rope_char_ref_proxy<_CharT, _Alloc>:: operator&() const { return _Rope_char_ptr_proxy<_CharT, _Alloc>(*this); } template rope<_CharT, _Alloc>:: rope(size_t __n, _CharT __c, const allocator_type& __a) : _Base(__a) { rope<_CharT,_Alloc> __result; const size_t __exponentiate_threshold = 32; size_t __exponent; size_t __rest; _CharT* __rest_buffer; _RopeRep* __remainder; rope<_CharT, _Alloc> __remainder_rope; if (0 == __n) return; __exponent = __n / __exponentiate_threshold; __rest = __n % __exponentiate_threshold; if (0 == __rest) __remainder = 0; else { __rest_buffer = this->_Data_allocate(_S_rounded_up_size(__rest)); __uninitialized_fill_n_a(__rest_buffer, __rest, __c, _M_get_allocator()); _S_cond_store_eos(__rest_buffer[__rest]); try { __remainder = _S_new_RopeLeaf(__rest_buffer, __rest, _M_get_allocator()); } catch(...) { _RopeRep::__STL_FREE_STRING(__rest_buffer, __rest, _M_get_allocator()); __throw_exception_again; } } __remainder_rope._M_tree_ptr = __remainder; if (__exponent != 0) { _CharT* __base_buffer = this->_Data_allocate(_S_rounded_up_size(__exponentiate_threshold)); _RopeLeaf* __base_leaf; rope __base_rope; __uninitialized_fill_n_a(__base_buffer, __exponentiate_threshold, __c, _M_get_allocator()); _S_cond_store_eos(__base_buffer[__exponentiate_threshold]); try { __base_leaf = _S_new_RopeLeaf(__base_buffer, __exponentiate_threshold, _M_get_allocator()); } catch(...) { _RopeRep::__STL_FREE_STRING(__base_buffer, __exponentiate_threshold, _M_get_allocator()); __throw_exception_again; } __base_rope._M_tree_ptr = __base_leaf; if (1 == __exponent) __result = __base_rope; else __result = power(__base_rope, __exponent, _Rope_Concat_fn<_CharT, _Alloc>()); if (0 != __remainder) __result += __remainder_rope; } else __result = __remainder_rope; this->_M_tree_ptr = __result._M_tree_ptr; this->_M_tree_ptr->_M_ref_nonnil(); } template _CharT rope<_CharT, _Alloc>::_S_empty_c_str[1]; template const _CharT* rope<_CharT, _Alloc>:: c_str() const { if (0 == this->_M_tree_ptr) { _S_empty_c_str[0] = _S_eos((_CharT*)0); // Possibly redundant, // but probably fast. return _S_empty_c_str; } __gthread_mutex_lock (&this->_M_tree_ptr->_M_c_string_lock); __GC_CONST _CharT* __result = this->_M_tree_ptr->_M_c_string; if (0 == __result) { size_t __s = size(); __result = this->_Data_allocate(__s + 1); _S_flatten(this->_M_tree_ptr, __result); __result[__s] = _S_eos((_CharT*)0); this->_M_tree_ptr->_M_c_string = __result; } __gthread_mutex_unlock (&this->_M_tree_ptr->_M_c_string_lock); return(__result); } template const _CharT* rope<_CharT, _Alloc>:: replace_with_c_str() { if (0 == this->_M_tree_ptr) { _S_empty_c_str[0] = _S_eos((_CharT*)0); return _S_empty_c_str; } __GC_CONST _CharT* __old_c_string = this->_M_tree_ptr->_M_c_string; if (__detail::_S_leaf == this->_M_tree_ptr->_M_tag && 0 != __old_c_string) return(__old_c_string); size_t __s = size(); _CharT* __result = this->_Data_allocate(_S_rounded_up_size(__s)); _S_flatten(this->_M_tree_ptr, __result); __result[__s] = _S_eos((_CharT*)0); this->_M_tree_ptr->_M_unref_nonnil(); this->_M_tree_ptr = _S_new_RopeLeaf(__result, __s, this->_M_get_allocator()); return(__result); } // Algorithm specializations. More should be added. template // was templated on CharT and Alloc void // VC++ workaround _Rope_rotate(_Rope_iterator __first, _Rope_iterator __middle, _Rope_iterator __last) { typedef typename _Rope_iterator::value_type _CharT; typedef typename _Rope_iterator::_allocator_type _Alloc; rope<_CharT, _Alloc>& __r(__first.container()); rope<_CharT, _Alloc> __prefix = __r.substr(0, __first.index()); rope<_CharT, _Alloc> __suffix = __r.substr(__last.index(), __r.size() - __last.index()); rope<_CharT, _Alloc> __part1 = __r.substr(__middle.index(), __last.index() - __middle.index()); rope<_CharT, _Alloc> __part2 = __r.substr(__first.index(), __middle.index() - __first.index()); __r = __prefix; __r += __part1; __r += __part2; __r += __suffix; } #if !defined(__GNUC__) // Appears to confuse g++ inline void rotate(_Rope_iterator __first, _Rope_iterator __middle, _Rope_iterator __last) { _Rope_rotate(__first, __middle, __last); } #endif # if 0 // Probably not useful for several reasons: // - for SGIs 7.1 compiler and probably some others, // this forces lots of rope instantiations, creating a // code bloat and compile time problem. (Fixed in 7.2.) // - wchar_t is 4 bytes wide on most UNIX platforms, making it // unattractive for unicode strings. Unsigned short may be a better // character type. inline void rotate(_Rope_iterator __first, _Rope_iterator __middle, _Rope_iterator __last) { _Rope_rotate(__first, __middle, __last); } # endif _GLIBCXX_END_NAMESPACE // Allocator that wraps "C" malloc -*- C++ -*- // Copyright (C) 2001, 2002, 2003, 2004, 2005, 2006, 2007 // Free Software Foundation, Inc. // // This file is part of the GNU ISO C++ Library. This library is free // software; you can redistribute it and/or modify it under the // terms of the GNU General Public License as published by the // Free Software Foundation; either version 2, or (at your option) // any later version. // This library is distributed in the hope that it will be useful, // but WITHOUT ANY WARRANTY; without even the implied warranty of // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the // GNU General Public License for more details. // You should have received a copy of the GNU General Public License along // with this library; see the file COPYING. If not, write to the Free // Software Foundation, 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, // USA. // As a special exception, you may use this file as part of a free software // library without restriction. Specifically, if other files instantiate // templates or use macros or inline functions from this file, or you compile // this file and link it with other files to produce an executable, this // file does not by itself cause the resulting executable to be covered by // the GNU General Public License. This exception does not however // invalidate any other reasons why the executable file might be covered by // the GNU General Public License. /** @file ext/malloc_allocator.h * This file is a GNU extension to the Standard C++ Library. */ #ifndef _MALLOC_ALLOCATOR_H #define _MALLOC_ALLOCATOR_H 1 #include #include #include #include _GLIBCXX_BEGIN_NAMESPACE(__gnu_cxx) using std::size_t; using std::ptrdiff_t; /** * @brief An allocator that uses malloc. * * This is precisely the allocator defined in the C++ Standard. * - all allocation calls malloc * - all deallocation calls free */ template class malloc_allocator { public: typedef size_t size_type; typedef ptrdiff_t difference_type; typedef _Tp* pointer; typedef const _Tp* const_pointer; typedef _Tp& reference; typedef const _Tp& const_reference; typedef _Tp value_type; template struct rebind { typedef malloc_allocator<_Tp1> other; }; malloc_allocator() throw() { } malloc_allocator(const malloc_allocator&) throw() { } template malloc_allocator(const malloc_allocator<_Tp1>&) throw() { } ~malloc_allocator() throw() { } pointer address(reference __x) const { return &__x; } const_pointer address(const_reference __x) const { return &__x; } // NB: __n is permitted to be 0. The C++ standard says nothing // about what the return value is when __n == 0. pointer allocate(size_type __n, const void* = 0) { if (__builtin_expect(__n > this->max_size(), false)) std::__throw_bad_alloc(); pointer __ret = static_cast<_Tp*>(std::malloc(__n * sizeof(_Tp))); if (!__ret) std::__throw_bad_alloc(); return __ret; } // __p is not permitted to be a null pointer. void deallocate(pointer __p, size_type) { std::free(static_cast(__p)); } size_type max_size() const throw() { return size_t(-1) / sizeof(_Tp); } // _GLIBCXX_RESOLVE_LIB_DEFECTS // 402. wrong new expression in [some_] allocator::construct void construct(pointer __p, const _Tp& __val) { ::new((void *)__p) value_type(__val); } #ifdef __GXX_EXPERIMENTAL_CXX0X__ template void construct(pointer __p, _Args&&... __args) { ::new((void *)__p) _Tp(std::forward<_Args>(__args)...); } #endif void destroy(pointer __p) { __p->~_Tp(); } }; template inline bool operator==(const malloc_allocator<_Tp>&, const malloc_allocator<_Tp>&) { return true; } template inline bool operator!=(const malloc_allocator<_Tp>&, const malloc_allocator<_Tp>&) { return false; } _GLIBCXX_END_NAMESPACE #endif // SGI's rope class -*- C++ -*- // Copyright (C) 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008 // Free Software Foundation, Inc. // // This file is part of the GNU ISO C++ Library. This library is free // software; you can redistribute it and/or modify it under the // terms of the GNU General Public License as published by the // Free Software Foundation; either version 2, or (at your option) // any later version. // This library is distributed in the hope that it will be useful, // but WITHOUT ANY WARRANTY; without even the implied warranty of // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the // GNU General Public License for more details. // You should have received a copy of the GNU General Public License along // with this library; see the file COPYING. If not, write to the Free // Software Foundation, 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, // USA. // As a special exception, you may use this file as part of a free software // library without restriction. Specifically, if other files instantiate // templates or use macros or inline functions from this file, or you compile // this file and link it with other files to produce an executable, this // file does not by itself cause the resulting executable to be covered by // the GNU General Public License. This exception does not however // invalidate any other reasons why the executable file might be covered by // the GNU General Public License. /* * Copyright (c) 1997 * Silicon Graphics Computer Systems, Inc. * * Permission to use, copy, modify, distribute and sell this software * and its documentation for any purpose is hereby granted without fee, * provided that the above copyright notice appear in all copies and * that both that copyright notice and this permission notice appear * in supporting documentation. Silicon Graphics makes no * representations about the suitability of this software for any * purpose. It is provided "as is" without express or implied warranty. */ /** @file ext/rope * This file is a GNU extension to the Standard C++ Library (possibly * containing extensions from the HP/SGI STL subset). */ #ifndef _ROPE #define _ROPE 1 #include #include #include #include #include #include #include #include #include # ifdef __GC # define __GC_CONST const # else # define __GC_CONST // constant except for deallocation # endif #include // For uninitialized_copy_n _GLIBCXX_BEGIN_NAMESPACE(__gnu_cxx) namespace __detail { enum { _S_max_rope_depth = 45 }; enum _Tag {_S_leaf, _S_concat, _S_substringfn, _S_function}; } // namespace __detail using std::size_t; using std::ptrdiff_t; using std::allocator; using std::_Destroy; // See libstdc++/36832. template void _Destroy_const(_ForwardIterator __first, _ForwardIterator __last, _Allocator __alloc) { for (; __first != __last; ++__first) __alloc.destroy(&*__first); } template inline void _Destroy_const(_ForwardIterator __first, _ForwardIterator __last, allocator<_Tp>) { _Destroy(__first, __last); } // The _S_eos function is used for those functions that // convert to/from C-like strings to detect the end of the string. // The end-of-C-string character. // This is what the draft standard says it should be. template inline _CharT _S_eos(_CharT*) { return _CharT(); } // Test for basic character types. // For basic character types leaves having a trailing eos. template inline bool _S_is_basic_char_type(_CharT*) { return false; } template inline bool _S_is_one_byte_char_type(_CharT*) { return false; } inline bool _S_is_basic_char_type(char*) { return true; } inline bool _S_is_one_byte_char_type(char*) { return true; } inline bool _S_is_basic_char_type(wchar_t*) { return true; } // Store an eos iff _CharT is a basic character type. // Do not reference _S_eos if it isn't. template inline void _S_cond_store_eos(_CharT&) { } inline void _S_cond_store_eos(char& __c) { __c = 0; } inline void _S_cond_store_eos(wchar_t& __c) { __c = 0; } // char_producers are logically functions that generate a section of // a string. These can be converted to ropes. The resulting rope // invokes the char_producer on demand. This allows, for example, // files to be viewed as ropes without reading the entire file. template class char_producer { public: virtual ~char_producer() { }; virtual void operator()(size_t __start_pos, size_t __len, _CharT* __buffer) = 0; // Buffer should really be an arbitrary output iterator. // That way we could flatten directly into an ostream, etc. // This is thoroughly impossible, since iterator types don't // have runtime descriptions. }; // Sequence buffers: // // Sequence must provide an append operation that appends an // array to the sequence. Sequence buffers are useful only if // appending an entire array is cheaper than appending element by element. // This is true for many string representations. // This should perhaps inherit from ostream // and be implemented correspondingly, so that they can be used // for formatted. For the sake of portability, we don't do this yet. // // For now, sequence buffers behave as output iterators. But they also // behave a little like basic_ostringstream and a // little like containers. template class sequence_buffer : public std::iterator { public: typedef typename _Sequence::value_type value_type; protected: _Sequence* _M_prefix; value_type _M_buffer[_Buf_sz]; size_t _M_buf_count; public: void flush() { _M_prefix->append(_M_buffer, _M_buffer + _M_buf_count); _M_buf_count = 0; } ~sequence_buffer() { flush(); } sequence_buffer() : _M_prefix(0), _M_buf_count(0) { } sequence_buffer(const sequence_buffer& __x) { _M_prefix = __x._M_prefix; _M_buf_count = __x._M_buf_count; std::copy(__x._M_buffer, __x._M_buffer + __x._M_buf_count, _M_buffer); } sequence_buffer(sequence_buffer& __x) { __x.flush(); _M_prefix = __x._M_prefix; _M_buf_count = 0; } sequence_buffer(_Sequence& __s) : _M_prefix(&__s), _M_buf_count(0) { } sequence_buffer& operator=(sequence_buffer& __x) { __x.flush(); _M_prefix = __x._M_prefix; _M_buf_count = 0; return *this; } sequence_buffer& operator=(const sequence_buffer& __x) { _M_prefix = __x._M_prefix; _M_buf_count = __x._M_buf_count; std::copy(__x._M_buffer, __x._M_buffer + __x._M_buf_count, _M_buffer); return *this; } void push_back(value_type __x) { if (_M_buf_count < _Buf_sz) { _M_buffer[_M_buf_count] = __x; ++_M_buf_count; } else { flush(); _M_buffer[0] = __x; _M_buf_count = 1; } } void append(value_type* __s, size_t __len) { if (__len + _M_buf_count <= _Buf_sz) { size_t __i = _M_buf_count; for (size_t __j = 0; __j < __len; __i++, __j++) _M_buffer[__i] = __s[__j]; _M_buf_count += __len; } else if (0 == _M_buf_count) _M_prefix->append(__s, __s + __len); else { flush(); append(__s, __len); } } sequence_buffer& write(value_type* __s, size_t __len) { append(__s, __len); return *this; } sequence_buffer& put(value_type __x) { push_back(__x); return *this; } sequence_buffer& operator=(const value_type& __rhs) { push_back(__rhs); return *this; } sequence_buffer& operator*() { return *this; } sequence_buffer& operator++() { return *this; } sequence_buffer operator++(int) { return *this; } }; // The following should be treated as private, at least for now. template class _Rope_char_consumer { public: // If we had member templates, these should not be virtual. // For now we need to use run-time parametrization where // compile-time would do. Hence this should all be private // for now. // The symmetry with char_producer is accidental and temporary. virtual ~_Rope_char_consumer() { }; virtual bool operator()(const _CharT* __buffer, size_t __len) = 0; }; // First a lot of forward declarations. The standard seems to require // much stricter "declaration before use" than many of the implementations // that preceded it. template > class rope; template struct _Rope_RopeConcatenation; template struct _Rope_RopeLeaf; template struct _Rope_RopeFunction; template struct _Rope_RopeSubstring; template class _Rope_iterator; template class _Rope_const_iterator; template class _Rope_char_ref_proxy; template class _Rope_char_ptr_proxy; template bool operator==(const _Rope_char_ptr_proxy<_CharT, _Alloc>& __x, const _Rope_char_ptr_proxy<_CharT, _Alloc>& __y); template _Rope_const_iterator<_CharT, _Alloc> operator-(const _Rope_const_iterator<_CharT, _Alloc>& __x, ptrdiff_t __n); template _Rope_const_iterator<_CharT, _Alloc> operator+(const _Rope_const_iterator<_CharT, _Alloc>& __x, ptrdiff_t __n); template _Rope_const_iterator<_CharT, _Alloc> operator+(ptrdiff_t __n, const _Rope_const_iterator<_CharT, _Alloc>& __x); template bool operator==(const _Rope_const_iterator<_CharT, _Alloc>& __x, const _Rope_const_iterator<_CharT, _Alloc>& __y); template bool operator<(const _Rope_const_iterator<_CharT, _Alloc>& __x, const _Rope_const_iterator<_CharT, _Alloc>& __y); template ptrdiff_t operator-(const _Rope_const_iterator<_CharT, _Alloc>& __x, const _Rope_const_iterator<_CharT, _Alloc>& __y); template _Rope_iterator<_CharT, _Alloc> operator-(const _Rope_iterator<_CharT, _Alloc>& __x, ptrdiff_t __n); template _Rope_iterator<_CharT, _Alloc> operator+(const _Rope_iterator<_CharT, _Alloc>& __x, ptrdiff_t __n); template _Rope_iterator<_CharT, _Alloc> operator+(ptrdiff_t __n, const _Rope_iterator<_CharT, _Alloc>& __x); template bool operator==(const _Rope_iterator<_CharT, _Alloc>& __x, const _Rope_iterator<_CharT, _Alloc>& __y); template bool operator<(const _Rope_iterator<_CharT, _Alloc>& __x, const _Rope_iterator<_CharT, _Alloc>& __y); template ptrdiff_t operator-(const _Rope_iterator<_CharT, _Alloc>& __x, const _Rope_iterator<_CharT, _Alloc>& __y); template rope<_CharT, _Alloc> operator+(const rope<_CharT, _Alloc>& __left, const rope<_CharT, _Alloc>& __right); template rope<_CharT, _Alloc> operator+(const rope<_CharT, _Alloc>& __left, const _CharT* __right); �7�7�7�7�7�7�7�7�7�7�7�7�7�7�7�7�7�7�7�7�7�7�7�7�7�7�7�7�7�7�7�7�7�7�7�7�7�7�7888888888 8 888 8888888888888888888 8!8"8 template rope<_CharT, _Alloc> operator+(const rope<_CharT, _Alloc>& __left, _CharT __right); // Some helpers, so we can use power on ropes. // See below for why this isn't local to the implementation. // This uses a nonstandard refcount convention. // The result has refcount 0. template struct _Rope_Concat_fn : public std::binary_function, rope<_CharT, _Alloc>, rope<_CharT, _Alloc> > { rope<_CharT, _Alloc> operator()(const rope<_CharT, _Alloc>& __x, const rope<_CharT, _Alloc>& __y) { return __x + __y; } }; template inline rope<_CharT, _Alloc> identity_element(_Rope_Concat_fn<_CharT, _Alloc>) { return rope<_CharT, _Alloc>(); } // Class _Refcount_Base provides a type, _RC_t, a data member, // _M_ref_count, and member functions _M_incr and _M_decr, which perform // atomic preincrement/predecrement. The constructor initializes // _M_ref_count. struct _Refcount_Base { // The type _RC_t typedef size_t _RC_t; // The data member _M_ref_count volatile _RC_t _M_ref_count; // Constructor __gthread_mutex_t _M_ref_count_lock; _Refcount_Base(_RC_t __n) : _M_ref_count(__n), _M_ref_count_lock() { #ifdef __GTHREAD_MUTEX_INIT __gthread_mutex_t __tmp = __GTHREAD_MUTEX_INIT; _M_ref_count_lock = __tmp; #elif defined(__GTHREAD_MUTEX_INIT_FUNCTION) __GTHREAD_MUTEX_INIT_FUNCTION (&_M_ref_count_lock); #else #error __GTHREAD_MUTEX_INIT or __GTHREAD_MUTEX_INIT_FUNCTION should be defined by gthr.h abstraction layer, report problem to libstdc++@gcc.gnu.org. #endif } void _M_incr() { __gthread_mutex_lock(&_M_ref_count_lock); ++_M_ref_count; __gthread_mutex_unlock(&_M_ref_count_lock); } _RC_t _M_decr() { __gthread_mutex_lock(&_M_ref_count_lock); volatile _RC_t __tmp = --_M_ref_count; __gthread_mutex_unlock(&_M_ref_count_lock); return __tmp; } }; // // What follows should really be local to rope. Unfortunately, // that doesn't work, since it makes it impossible to define generic // equality on rope iterators. According to the draft standard, the // template parameters for such an equality operator cannot be inferred // from the occurrence of a member class as a parameter. // (SGI compilers in fact allow this, but the __result wouldn't be // portable.) // Similarly, some of the static member functions are member functions // only to avoid polluting the global namespace, and to circumvent // restrictions on type inference for template functions. // // // The internal data structure for representing a rope. This is // private to the implementation. A rope is really just a pointer // to one of these. // // A few basic functions for manipulating this data structure // are members of _RopeRep. Most of the more complex algorithms // are implemented as rope members. // // Some of the static member functions of _RopeRep have identically // named functions in rope that simply invoke the _RopeRep versions. #define __ROPE_DEFINE_ALLOCS(__a) \ __ROPE_DEFINE_ALLOC(_CharT,_Data) /* character data */ \ typedef _Rope_RopeConcatenation<_CharT,__a> __C; \ __ROPE_DEFINE_ALLOC(__C,_C) \ typedef _Rope_RopeLeaf<_CharT,__a> __L; \ __ROPE_DEFINE_ALLOC(__L,_L) \ typedef _Rope_RopeFunction<_CharT,__a> __F; \ __ROPE_DEFINE_ALLOC(__F,_F) \ typedef _Rope_RopeSubstring<_CharT,__a> __S; \ __ROPE_DEFINE_ALLOC(__S,_S) // Internal rope nodes potentially store a copy of the allocator // instance used to allocate them. This is mostly redundant. // But the alternative would be to pass allocator instances around // in some form to nearly all internal functions, since any pointer // assignment may result in a zero reference count and thus require // deallocation. #define __STATIC_IF_SGI_ALLOC /* not static */ template struct _Rope_rep_base : public _Alloc { typedef _Alloc allocator_type; allocator_type get_allocator() const { return *static_cast(this); } allocator_type& _M_get_allocator() { return *static_cast<_Alloc*>(this); } const allocator_type& _M_get_allocator() const { return *static_cast(this); } _Rope_rep_base(size_t __size, const allocator_type&) : _M_size(__size) { } size_t _M_size; # define __ROPE_DEFINE_ALLOC(_Tp, __name) \ typedef typename \ _Alloc::template rebind<_Tp>::other __name##Alloc; \ static _Tp* __name##_allocate(size_t __n) \ { return __name##Alloc().allocate(__n); } \ static void __name##_deallocate(_Tp *__p, size_t __n) \ { __name##Alloc().deallocate(__p, __n); } __ROPE_DEFINE_ALLOCS(_Alloc) # undef __ROPE_DEFINE_ALLOC }; template struct _Rope_RopeRep : public _Rope_rep_base<_CharT, _Alloc> # ifndef __GC , _Refcount_Base # endif { public: __detail::_Tag _M_tag:8; bool _M_is_balanced:8; unsigned char _M_depth; __GC_CONST _CharT* _M_c_string; __gthread_mutex_t _M_c_string_lock; /* Flattened version of string, if needed. */ /* typically 0. */ /* If it's not 0, then the memory is owned */ /* by this node. */ /* In the case of a leaf, this may point to */ /* the same memory as the data field. */ typedef typename _Rope_rep_base<_CharT, _Alloc>::allocator_type allocator_type; using _Rope_rep_base<_CharT, _Alloc>::get_allocator; using _Rope_rep_base<_CharT, _Alloc>::_M_get_allocator; _Rope_RopeRep(__detail::_Tag __t, int __d, bool __b, size_t __size, const allocator_type& __a) : _Rope_rep_base<_CharT, _Alloc>(__size, __a), #ifndef __GC _Refcount_Base(1), #endif _M_tag(__t), _M_is_balanced(__b), _M_depth(__d), _M_c_string(0) #ifdef __GTHREAD_MUTEX_INIT { // Do not copy a POSIX/gthr mutex once in use. However, bits are bits. __gthread_mutex_t __tmp = __GTHREAD_MUTEX_INIT; _M_c_string_lock = __tmp; } #else { __GTHREAD_MUTEX_INIT_FUNCTION (&_M_c_string_lock); } #endif #ifdef __GC void _M_incr () { } #endif static void _S_free_string(__GC_CONST _CharT*, size_t __len, allocator_type& __a); #define __STL_FREE_STRING(__s, __l, __a) _S_free_string(__s, __l, __a); // Deallocate data section of a leaf. // This shouldn't be a member function. // But its hard to do anything else at the // moment, because it's templatized w.r.t. // an allocator. // Does nothing if __GC is defined. #ifndef __GC void _M_free_c_string(); void _M_free_tree(); // Deallocate t. Assumes t is not 0. void _M_unref_nonnil() { if (0 == _M_decr()) _M_free_tree(); } void _M_ref_nonnil() { _M_incr(); } static void _S_unref(_Rope_RopeRep* __t) { if (0 != __t) __t->_M_unref_nonnil(); } static void _S_ref(_Rope_RopeRep* __t) { if (0 != __t) __t->_M_incr(); } static void _S_free_if_unref(_Rope_RopeRep* __t) { if (0 != __t && 0 == __t->_M_ref_count) __t->_M_free_tree(); } # else /* __GC */ void _M_unref_nonnil() { } void _M_ref_nonnil() { } static void _S_unref(_Rope_RopeRep*) { } static void _S_ref(_Rope_RopeRep*) { } static void _S_free_if_unref(_Rope_RopeRep*) { } # endif protected: _Rope_RopeRep& operator=(const _Rope_RopeRep&); _Rope_RopeRep(const _Rope_RopeRep&); }; template struct _Rope_RopeLeaf : public _Rope_RopeRep<_CharT, _Alloc> { public: // Apparently needed by VC++ // The data fields of leaves are allocated with some // extra space, to accommodate future growth and for basic // character types, to hold a trailing eos character. enum { _S_alloc_granularity = 8 }; static size_t _S_rounded_up_size(size_t __n) { size_t __size_with_eos; if (_S_is_basic_char_type((_CharT*)0)) __size_with_eos = __n + 1; else __size_with_eos = __n; #ifdef __GC return __size_with_eos; #else // Allow slop for in-place expansion. return ((__size_with_eos + size_t(_S_alloc_granularity) - 1) &~ (size_t(_S_alloc_granularity) - 1)); #endif } __GC_CONST _CharT* _M_data; /* Not necessarily 0 terminated. */ /* The allocated size is */ /* _S_rounded_up_size(size), except */ /* in the GC case, in which it */ /* doesn't matter. */ typedef typename _Rope_rep_base<_CharT,_Alloc>::allocator_type allocator_type; _Rope_RopeLeaf(__GC_CONST _CharT* __d, size_t __size, const allocator_type& __a) : _Rope_RopeRep<_CharT, _Alloc>(__detail::_S_leaf, 0, true, __size, __a), _M_data(__d) { if (_S_is_basic_char_type((_CharT *)0)) { // already eos terminated. this->_M_c_string = __d; } } // The constructor assumes that d has been allocated with // the proper allocator and the properly padded size. // In contrast, the destructor deallocates the data: #ifndef __GC ~_Rope_RopeLeaf() throw() { if (_M_data != this->_M_c_string) this->_M_free_c_string(); __STL_FREE_STRING(_M_data, this->_M_size, this->_M_get_allocator()); } #endif protected: _Rope_RopeLeaf& operator=(const _Rope_RopeLeaf&); _Rope_RopeLeaf(const _Rope_RopeLeaf&); }; template struct _Rope_RopeConcatenation : public _Rope_RopeRep<_CharT, _Alloc> { public: _Rope_RopeRep<_CharT, _Alloc>* _M_left; _Rope_RopeRep<_CharT, _Alloc>* _M_right; typedef typename _Rope_rep_base<_CharT, _Alloc>::allocator_type allocator_type; _Rope_RopeConcatenation(_Rope_RopeRep<_CharT, _Alloc>* __l, _Rope_RopeRep<_CharT, _Alloc>* __r, const allocator_type& __a) : _Rope_RopeRep<_CharT, _Alloc>(__detail::_S_concat, std::max(__l->_M_depth, __r->_M_depth) + 1, false, __l->_M_size + __r->_M_size, __a), _M_left(__l), _M_right(__r) { } #ifndef __GC ~_Rope_RopeConcatenation() throw() { this->_M_free_c_string(); _M_left->_M_unref_nonnil(); _M_right->_M_unref_nonnil(); } #endif protected: _Rope_RopeConcatenation& operator=(const _Rope_RopeConcatenation&); _Rope_RopeConcatenation(const _Rope_RopeConcatenation&); }; template struct _Rope_RopeFunction : public _Rope_RopeRep<_CharT, _Alloc> { public: char_producer<_CharT>* _M_fn; #ifndef __GC bool _M_delete_when_done; // Char_producer is owned by the // rope and should be explicitly // deleted when the rope becomes // inaccessible. #else // In the GC case, we either register the rope for // finalization, or not. Thus the field is unnecessary; // the information is stored in the collector data structures. // We do need a finalization procedure to be invoked by the // collector. static void _S_fn_finalization_proc(void * __tree, void *) { delete ((_Rope_RopeFunction *)__tree) -> _M_fn; } #endif typedef typename _Rope_rep_base<_CharT, _Alloc>::allocator_type allocator_type; _Rope_RopeFunction(char_producer<_CharT>* __f, size_t __size, bool __d, const allocator_type& __a) : _Rope_RopeRep<_CharT, _Alloc>(__detail::_S_function, 0, true, __size, __a) , _M_fn(__f) #ifndef __GC , _M_delete_when_done(__d) #endif { #ifdef __GC if (__d) { GC_REGISTER_FINALIZER(this, _Rope_RopeFunction:: _S_fn_finalization_proc, 0, 0, 0); } #endif } #ifndef __GC ~_Rope_RopeFunction() throw() { this->_M_free_c_string(); if (_M_delete_when_done) delete _M_fn; } # endif protected: _Rope_RopeFunction& operator=(const _Rope_RopeFunction&); _Rope_RopeFunction(const _Rope_RopeFunction&); }; // Substring results are usually represented using just // concatenation nodes. But in the case of very long flat ropes // or ropes with a functional representation that isn't practical. // In that case, we represent the __result as a special case of // RopeFunction, whose char_producer points back to the rope itself. // In all cases except repeated substring operations and // deallocation, we treat the __result as a RopeFunction. template struct _Rope_RopeSubstring : public _Rope_RopeFunction<_CharT, _Alloc>, public char_producer<_CharT> { public: // XXX this whole class should be rewritten. _Rope_RopeRep<_CharT,_Alloc>* _M_base; // not 0 size_t _M_start; virtual void operator()(size_t __start_pos, size_t __req_len, _CharT* __buffer) { switch(_M_base->_M_tag) { case __detail::_S_function: case __detail::_S_substringfn: { char_producer<_CharT>* __fn = ((_Rope_RopeFunction<_CharT,_Alloc>*)_M_base)->_M_fn; (*__fn)(__start_pos + _M_start, __req_len, __buffer); } break; case __detail::_S_leaf: { __GC_CONST _CharT* __s = ((_Rope_RopeLeaf<_CharT,_Alloc>*)_M_base)->_M_data; uninitialized_copy_n(__s + __start_pos + _M_start, __req_len, __buffer); } break; default: break; } } typedef typename _Rope_rep_base<_CharT, _Alloc>::allocator_type allocator_type; _Rope_RopeSubstring(_Rope_RopeRep<_CharT, _Alloc>* __b, size_t __s, size_t __l, const allocator_type& __a) : _Rope_RopeFunction<_CharT, _Alloc>(this, __l, false, __a), char_producer<_CharT>(), _M_base(__b), _M_start(__s) { #ifndef __GC _M_base->_M_ref_nonnil(); #endif this->_M_tag = __detail::_S_substringfn; } virtual ~_Rope_RopeSubstring() throw() { #ifndef __GC _M_base->_M_unref_nonnil(); // _M_free_c_string(); -- done by parent class #endif } }; // Self-destructing pointers to Rope_rep. // These are not conventional smart pointers. Their // only purpose in life is to ensure that unref is called // on the pointer either at normal exit or if an exception // is raised. It is the caller's responsibility to // adjust reference counts when these pointers are initialized // or assigned to. (This convention significantly reduces // the number of potentially expensive reference count // updates.) #ifndef __GC template struct _Rope_self_destruct_ptr { _Rope_RopeRep<_CharT, _Alloc>* _M_ptr; ~_Rope_self_destruct_ptr() { _Rope_RopeRep<_CharT, _Alloc>::_S_unref(_M_ptr); } #ifdef __EXCEPTIONS _Rope_self_destruct_ptr() : _M_ptr(0) { }; #else _Rope_self_destruct_ptr() { }; #endif _Rope_self_destruct_ptr(_Rope_RopeRep<_CharT, _Alloc>* __p) : _M_ptr(__p) { } _Rope_RopeRep<_CharT, _Alloc>& operator*() { return *_M_ptr; } _Rope_RopeRep<_CharT, _Alloc>* operator->() { return _M_ptr; } operator _Rope_RopeRep<_CharT, _Alloc>*() { return _M_ptr; } _Rope_self_destruct_ptr& operator=(_Rope_RopeRep<_CharT, _Alloc>* __x) { _M_ptr = __x; return *this; } }; #endif // Dereferencing a nonconst iterator has to return something // that behaves almost like a reference. It's not possible to // return an actual reference since assignment requires extra // work. And we would get into the same problems as with the // CD2 version of basic_string. template class _Rope_char_ref_proxy { friend class rope<_CharT, _Alloc>; friend class _Rope_iterator<_CharT, _Alloc>; friend class _Rope_char_ptr_proxy<_CharT, _Alloc>; #ifdef __GC typedef _Rope_RopeRep<_CharT, _Alloc>* _Self_destruct_ptr; #else typedef _Rope_self_destruct_ptr<_CharT, _Alloc> _Self_destruct_ptr; #endif typedef _Rope_RopeRep<_CharT, _Alloc> _RopeRep; typedef rope<_CharT, _Alloc> _My_rope; size_t _M_pos; _CharT _M_current; bool _M_current_valid; _My_rope* _M_root; // The whole rope. public: _Rope_char_ref_proxy(_My_rope* __r, size_t __p) : _M_pos(__p), _M_current(), _M_current_valid(false), _M_root(__r) { } _Rope_char_ref_proxy(const _Rope_char_ref_proxy& __x) : _M_pos(__x._M_pos), _M_current(__x._M_current), _M_current_valid(false), _M_root(__x._M_root) { } // Don't preserve cache if the reference can outlive the // expression. We claim that's not possible without calling // a copy constructor or generating reference to a proxy // reference. We declare the latter to have undefined semantics. _Rope_char_ref_proxy(_My_rope* __r, size_t __p, _CharT __c) : _M_pos(__p), _M_current(__c), _M_current_valid(true), _M_root(__r) { } inline operator _CharT () const; _Rope_char_ref_proxy& operator=(_CharT __c); _Rope_char_ptr_proxy<_CharT, _Alloc> operator&() const; _Rope_char_ref_proxy& operator=(const _Rope_char_ref_proxy& __c) { return operator=((_CharT)__c); } }; template inline void swap(_Rope_char_ref_proxy <_CharT, __Alloc > __a, _Rope_char_ref_proxy <_CharT, __Alloc > __b) { _CharT __tmp = __a; __a = __b; __b = __tmp; } template class _Rope_char_ptr_proxy { // XXX this class should be rewritten. friend class _Rope_char_ref_proxy<_CharT, _Alloc>; size_t _M_pos; rope<_CharT,_Alloc>* _M_root; // The whole rope. public: _Rope_char_ptr_proxy(const _Rope_char_ref_proxy<_CharT,_Alloc>& __x) : _M_pos(__x._M_pos), _M_root(__x._M_root) { } _Rope_char_ptr_proxy(const _Rope_char_ptr_proxy& __x) : _M_pos(__x._M_pos), _M_root(__x._M_root) { } _Rope_char_ptr_proxy() { } _Rope_char_ptr_proxy(_CharT* __x) : _M_root(0), _M_pos(0) { } _Rope_char_ptr_proxy& operator=(const _Rope_char_ptr_proxy& __x) { _M_pos = __x._M_pos; _M_root = __x._M_root; return *this; } template friend bool operator==(const _Rope_char_ptr_proxy<_CharT2, _Alloc2>& __x, const _Rope_char_ptr_proxy<_CharT2, _Alloc2>& __y); _Rope_char_ref_proxy<_CharT, _Alloc> operator*() const { return _Rope_char_ref_proxy<_CharT, _Alloc>(_M_root, _M_pos); } }; // Rope iterators: // Unlike in the C version, we cache only part of the stack // for rope iterators, since they must be efficiently copyable. // When we run out of cache, we have to reconstruct the iterator // value. // Pointers from iterators are not included in reference counts. // Iterators are assumed to be thread private. Ropes can // be shared. template class _Rope_iterator_base : public std::iterator { friend class rope<_CharT, _Alloc>; public: typedef _Alloc _allocator_type; // used in _Rope_rotate, VC++ workaround typedef _Rope_RopeRep<_CharT, _Alloc> _RopeRep; // Borland doesn't want this to be protected. protected: enum { _S_path_cache_len = 4 }; // Must be <= 9. enum { _S_iterator_buf_len = 15 }; size_t _M_current_pos; _RopeRep* _M_root; // The whole rope. size_t _M_leaf_pos; // Starting position for current leaf __GC_CONST _CharT* _M_buf_start; // Buffer possibly // containing current char. __GC_CONST _CharT* _M_buf_ptr; // Pointer to current char in buffer. // != 0 ==> buffer valid. __GC_CONST _CharT* _M_buf_end; // One past __last valid char in buffer. // What follows is the path cache. We go out of our // way to make this compact. // Path_end contains the bottom section of the path from // the root to the current leaf. const _RopeRep* _M_path_end[_S_path_cache_len]; int _M_leaf_index; // Last valid __pos in path_end; // _M_path_end[0] ... _M_path_end[leaf_index-1] // point to concatenation nodes. unsigned char _M_path_directions; // (path_directions >> __i) & 1 is 1 // iff we got from _M_path_end[leaf_index - __i - 1] // to _M_path_end[leaf_index - __i] by going to the // __right. Assumes path_cache_len <= 9. _CharT _M_tmp_buf[_S_iterator_buf_len]; // Short buffer for surrounding chars. // This is useful primarily for // RopeFunctions. We put the buffer // here to avoid locking in the // multithreaded case. // The cached path is generally assumed to be valid // only if the buffer is valid. static void _S_setbuf(_Rope_iterator_base& __x); // Set buffer contents given // path cache. static void _S_setcache(_Rope_iterator_base& __x); // Set buffer contents and // path cache. static void _S_setcache_for_incr(_Rope_iterator_base& __x); // As above, but assumes path // cache is valid for previous posn. _Rope_iterator_base() { } _Rope_iterator_base(_RopeRep* __root, size_t __pos) : _M_current_pos(__pos), _M_root(__root), _M_buf_ptr(0) { } void _M_incr(size_t __n); void _M_decr(size_t __n); public: size_t index() const { return _M_current_pos; } _Rope_iterator_base(const _Rope_iterator_base& __x) { if (0 != __x._M_buf_ptr) *this = __x; else { _M_current_pos = __x._M_current_pos; _M_root = __x._M_root; _M_buf_ptr = 0; } } }; template class _Rope_iterator; template class _Rope_const_iterator : public _Rope_iterator_base<_CharT, _Alloc> { friend class rope<_CharT, _Alloc>; protected: typedef _Rope_RopeRep<_CharT, _Alloc> _RopeRep; // The one from the base class may not be directly visible. _Rope_const_iterator(const _RopeRep* __root, size_t __pos) : _Rope_iterator_base<_CharT, _Alloc>(const_cast<_RopeRep*>(__root), __pos) // Only nonconst iterators modify root ref count { } public: typedef _CharT reference; // Really a value. Returning a reference // Would be a mess, since it would have // to be included in refcount. typedef const _CharT* pointer; public: _Rope_const_iterator() { }; _Rope_const_iterator(const _Rope_const_iterator& __x) : _Rope_iterator_base<_CharT,_Alloc>(__x) { } _Rope_const_iterator(const _Rope_iterator<_CharT,_Alloc>& __x); _Rope_const_iterator(const rope<_CharT, _Alloc>& __r, size_t __pos) : _Rope_iterator_base<_CharT,_Alloc>(__r._M_tree_ptr, __pos) { } _Rope_const_iterator& operator=(const _Rope_const_iterator& __x) { if (0 != __x._M_buf_ptr) *(static_cast<_Rope_iterator_base<_CharT, _Alloc>*>(this)) = __x; else { this->_M_current_pos = __x._M_current_pos; this->_M_root = __x._M_root; this->_M_buf_ptr = 0; } return(*this); } reference operator*() { if (0 == this->_M_buf_ptr) _S_setcache(*this); return *this->_M_buf_ptr; } // Without this const version, Rope iterators do not meet the // requirements of an Input Iterator. reference operator*() const { return *const_cast<_Rope_const_iterator&>(*this); } _Rope_const_iterator& operator++() { __GC_CONST _CharT* __next; if (0 != this->_M_buf_ptr && (__next = this->_M_buf_ptr + 1) < this->_M_buf_end) { this->_M_buf_ptr = __next; ++this->_M_current_pos; } else this->_M_incr(1); return *this; } _Rope_const_iterator& operator+=(ptrdiff_t __n) { if (__n >= 0) this->_M_incr(__n); else this->_M_decr(-__n); return *this; } _Rope_const_iterator& operator--() { this->_M_decr(1); return *this; } _Rope_const_iterator& operator-=(ptrdiff_t __n) { if (__n >= 0) this->_M_decr(__n); else this->_M_incr(-__n); return *this; } _Rope_const_iterator operator++(int) { size_t __old_pos = this->_M_current_pos; this->_M_incr(1); return _Rope_const_iterator<_CharT,_Alloc>(this->_M_root, __old_pos); // This makes a subsequent dereference expensive. // Perhaps we should instead copy the iterator // if it has a valid cache? } _Rope_const_iterator operator--(int) { size_t __old_pos = this->_M_current_pos; this->_M_decr(1); return _Rope_const_iterator<_CharT,_Alloc>(this->_M_root, __old_pos); } template friend _Rope_const_iterator<_CharT2, _Alloc2> operator-(const _Rope_const_iterator<_CharT2, _Alloc2>& __x, ptrdiff_t __n); template friend _Rope_const_iterator<_CharT2, _Alloc2> operator+(const _Rope_const_iterator<_CharT2, _Alloc2>& __x, ptrdiff_t __n); template friend _Rope_const_iterator<_CharT2, _Alloc2> operator+(ptrdiff_t __n, const _Rope_const_iterator<_CharT2, _Alloc2>& __x); reference operator[](size_t __n) { return rope<_CharT, _Alloc>::_S_fetch(this->_M_root, this->_M_current_pos + __n); } template friend bool operator==(const _Rope_const_iterator<_CharT2, _Alloc2>& __x, const _Rope_const_iterator<_CharT2, _Alloc2>& __y); template friend bool operator<(const _Rope_const_iterator<_CharT2, _Alloc2>& __x, const _Rope_const_iterator<_CharT2, _Alloc2>& __y); template friend ptrdiff_t operator-(const _Rope_const_iterator<_CharT2, _Alloc2>& __x, const _Rope_const_iterator<_CharT2, _Alloc2>& __y); }; template class _Rope_iterator : public _Rope_iterator_base<_CharT, _Alloc> { friend class rope<_CharT, _Alloc>; protected: typedef typename _Rope_iterator_base<_CharT, _Alloc>::_RopeRep _RopeRep; rope<_CharT, _Alloc>* _M_root_rope; // root is treated as a cached version of this, and is used to // detect changes to the underlying rope. // Root is included in the reference count. This is necessary // so that we can detect changes reliably. Unfortunately, it // requires careful bookkeeping for the nonGC case. _Rope_iterator(rope<_CharT, _Alloc>* __r, size_t __pos) : _Rope_iterator_base<_CharT, _Alloc>(__r->_M_tree_ptr, __pos), _M_root_rope(__r) { _RopeRep::_S_ref(this->_M_root); if (!(__r -> empty())) _S_setcache(*this); } void _M_check(); public: typedef _Rope_char_ref_proxy<_CharT, _Alloc> reference; typedef _Rope_char_ref_proxy<_CharT, _Alloc>* pointer; rope<_CharT, _Alloc>& container() { return *_M_root_rope; } _Rope_iterator() { this->_M_root = 0; // Needed for reference counting. }; _Rope_iterator(const _Rope_iterator& __x) : _Rope_iterator_base<_CharT, _Alloc>(__x) { _M_root_rope = __x._M_root_rope; _RopeRep::_S_ref(this->_M_root); } _Rope_iterator(rope<_CharT, _Alloc>& __r, size_t __pos); ~_Rope_iterator() { _RopeRep::_S_unref(this->_M_root); } _Rope_iterator& operator=(const _Rope_iterator& __x) { _RopeRep* __old = this->_M_root; _RopeRep::_S_ref(__x._M_root); if (0 != __x._M_buf_ptr) { _M_root_rope = __x._M_root_rope; *(static_cast<_Rope_iterator_base<_CharT, _Alloc>*>(this)) = __x; } else { this->_M_current_pos = __x._M_current_pos; this->_M_root = __x._M_root; _M_root_rope = __x._M_root_rope; this->_M_buf_ptr = 0; } _RopeRep::_S_unref(__old); return(*this); } reference operator*() { _M_check(); if (0 == this->_M_buf_ptr) return _Rope_char_ref_proxy<_CharT, _Alloc>(_M_root_rope, this->_M_current_pos); else return _Rope_char_ref_proxy<_CharT, _Alloc>(_M_root_rope, this->_M_current_pos, *this->_M_buf_ptr); } // See above comment. reference operator*() const { return *const_cast<_Rope_iterator&>(*this); } _Rope_iterator& operator++() { this->_M_incr(1); return *this; } _Rope_iterator& operator+=(ptrdiff_t __n) { if (__n >= 0) this->_M_incr(__n); else this->_M_decr(-__n); return *this; } _Rope_iterator& operator--() { this->_M_decr(1); return *this; } _Rope_iterator& operator-=(ptrdiff_t __n) { if (__n >= 0) this->_M_decr(__n); else this->_M_incr(-__n); return *this; } _Rope_iterator operator++(int) { size_t __old_pos = this->_M_current_pos; this->_M_incr(1); return _Rope_iterator<_CharT,_Alloc>(_M_root_rope, __old_pos); } _Rope_iterator operator--(int) { size_t __old_pos = this->_M_current_pos; this->_M_decr(1); return _Rope_iterator<_CharT,_Alloc>(_M_root_rope, __old_pos); } reference operator[](ptrdiff_t __n) { return _Rope_char_ref_proxy<_CharT, _Alloc>(_M_root_rope, this->_M_current_pos + __n); } template friend bool operator==(const _Rope_iterator<_CharT2, _Alloc2>& __x, const _Rope_iterator<_CharT2, _Alloc2>& __y); template friend bool operator<(const _Rope_iterator<_CharT2, _Alloc2>& __x, const _Rope_iterator<_CharT2, _Alloc2>& __y); template friend ptrdiff_t operator-(const _Rope_iterator<_CharT2, _Alloc2>& __x, const _Rope_iterator<_CharT2, _Alloc2>& __y); template friend _Rope_iterator<_CharT2, _Alloc2> operator-(const _Rope_iterator<_CharT2, _Alloc2>& __x, ptrdiff_t __n); template friend _Rope_iterator<_CharT2, _Alloc2> operator+(const _Rope_iterator<_CharT2, _Alloc2>& __x, ptrdiff_t __n); template friend _Rope_iterator<_CharT2, _Alloc2> operator+(ptrdiff_t __n, const _Rope_iterator<_CharT2, _Alloc2>& __x); }; template struct _Rope_base : public _Alloc { typedef _Alloc allocator_type; allocator_type get_allocator() const { return *static_cast(this); } allocator_type& _M_get_allocator() { return *static_cast<_Alloc*>(this); } const allocator_type& _M_get_allocator() const { return *static_cast(this); } typedef _Rope_RopeRep<_CharT, _Alloc> _RopeRep; // The one in _Base may not be visible due to template rules. _Rope_base(_RopeRep* __t, const allocator_type&) : _M_tree_ptr(__t) { } _Rope_base(const allocator_type&) { } // The only data member of a rope: _RopeRep *_M_tree_ptr; #define __ROPE_DEFINE_ALLOC(_Tp, __name) \ typedef typename \ _Alloc::template rebind<_Tp>::other __name##Alloc; \ static _Tp* __name##_allocate(size_t __n) \ { return __name##Alloc().allocate(__n); } \ static void __name##_deallocate(_Tp *__p, size_t __n) \ { __name##Alloc().deallocate(__p, __n); } __ROPE_DEFINE_ALLOCS(_Alloc) #undef __ROPE_DEFINE_ALLOC protected: _Rope_base& operator=(const _Rope_base&); _Rope_base(const _Rope_base&); }; /** * This is an SGI extension. * @ingroup SGIextensions * @doctodo */ template class rope : public _Rope_base<_CharT, _Alloc> { public: typedef _CharT value_type; typedef ptrdiff_t difference_type; typedef size_t size_type; typedef _CharT const_reference; typedef const _CharT* const_pointer; typedef _Rope_iterator<_CharT, _Alloc> iterator; typedef _Rope_const_iterator<_CharT, _Alloc> const_iterator; typedef _Rope_char_ref_proxy<_CharT, _Alloc> reference; typedef _Rope_char_ptr_proxy<_CharT, _Alloc> pointer; friend class _Rope_iterator<_CharT, _Alloc>; friend class _Rope_const_iterator<_CharT, _Alloc>; friend struct _Rope_RopeRep<_CharT, _Alloc>; friend class _Rope_iterator_base<_CharT, _Alloc>; friend class _Rope_char_ptr_proxy<_CharT, _Alloc>; friend class _Rope_char_ref_proxy<_CharT, _Alloc>; friend struct _Rope_RopeSubstring<_CharT, _Alloc>; protected: typedef _Rope_base<_CharT, _Alloc> _Base; typedef typename _Base::allocator_type allocator_type; using _Base::_M_tree_ptr; using _Base::get_allocator; using _Base::_M_get_allocator; typedef __GC_CONST _CharT* _Cstrptr; static _CharT _S_empty_c_str[1]; static bool _S_is0(_CharT __c) { return __c == _S_eos((_CharT*)0); } enum { _S_copy_max = 23 }; // For strings shorter than _S_copy_max, we copy to // concatenate. typedef _Rope_RopeRep<_CharT, _Alloc> _RopeRep; typedef _Rope_RopeConcatenation<_CharT, _Alloc> _RopeConcatenation; typedef _Rope_RopeLeaf<_CharT, _Alloc> _RopeLeaf; typedef _Rope_RopeFunction<_CharT, _Alloc> _RopeFunction; typedef _Rope_RopeSubstring<_CharT, _Alloc> _RopeSubstring; // Retrieve a character at the indicated position. static _CharT _S_fetch(_RopeRep* __r, size_type __pos); #ifndef __GC // Obtain a pointer to the character at the indicated position. // The pointer can be used to change the character. // If such a pointer cannot be produced, as is frequently the // case, 0 is returned instead. // (Returns nonzero only if all nodes in the path have a refcount // of 1.) static _CharT* _S_fetch_ptr(_RopeRep* __r, size_type __pos); #endif static bool _S_apply_to_pieces(// should be template parameter _Rope_char_consumer<_CharT>& __c, const _RopeRep* __r, size_t __begin, size_t __end); // begin and end are assumed to be in range. #ifndef __GC static void _S_unref(_RopeRep* __t) { _RopeRep::_S_unref(__t); } static void _S_ref(_RopeRep* __t) { _RopeRep::_S_ref(__t); } #else /* __GC */ static void _S_unref(_RopeRep*) { } static void _S_ref(_RopeRep*) { } #endif #ifdef __GC typedef _Rope_RopeRep<_CharT, _Alloc>* _Self_destruct_ptr; #else typedef _Rope_self_destruct_ptr<_CharT, _Alloc> _Self_destruct_ptr; #endif // _Result is counted in refcount. static _RopeRep* _S_substring(_RopeRep* __base, size_t __start, size_t __endp1); static _RopeRep* _S_concat_char_iter(_RopeRep* __r, const _CharT* __iter, size_t __slen); // Concatenate rope and char ptr, copying __s. // Should really take an arbitrary iterator. // Result is counted in refcount. static _RopeRep* _S_destr_concat_char_iter(_RopeRep* __r, const _CharT* __iter, size_t __slen) // As above, but one reference to __r is about to be // destroyed. Thus the pieces may be recycled if all // relevant reference counts are 1. #ifdef __GC // We can't really do anything since refcounts are unavailable. { return _S_concat_char_iter(__r, __iter, __slen); } #else ; #endif static _RopeRep* _S_concat(_RopeRep* __left, _RopeRep* __right); // General concatenation on _RopeRep. _Result // has refcount of 1. Adjusts argument refcounts. public: void apply_to_pieces(size_t __begin, size_t __end, _Rope_char_consumer<_CharT>& __c) const { _S_apply_to_pieces(__c, this->_M_tree_ptr, __begin, __end); } protected: static size_t _S_rounded_up_size(size_t __n) { return _RopeLeaf::_S_rounded_up_size(__n); } static size_t _S_allocated_capacity(size_t __n) { if (_S_is_basic_char_type((_CharT*)0)) return _S_rounded_up_size(__n) - 1; else return _S_rounded_up_size(__n); } // Allocate and construct a RopeLeaf using the supplied allocator // Takes ownership of s instead of copying. static _RopeLeaf* _S_new_RopeLeaf(__GC_CONST _CharT *__s, size_t __size, allocator_type& __a) { _RopeLeaf* __space = typename _Base::_LAlloc(__a).allocate(1); return new(__space) _RopeLeaf(__s, __size, __a); } static _RopeConcatenation* _S_new_RopeConcatenation(_RopeRep* __left, _RopeRep* __right, allocator_type& __a) { _RopeConcatenation* __space = typename _Base::_CAlloc(__a).allocate(1); return new(__space) _RopeConcatenation(__left, __right, __a); } static _RopeFunction* _S_new_RopeFunction(char_producer<_CharT>* __f, size_t __size, bool __d, allocator_type& __a) { _RopeFunction* __space = typename _Base::_FAlloc(__a).allocate(1); return new(__space) _RopeFunction(__f, __size, __d, __a); } static _RopeSubstring* _S_new_RopeSubstring(_Rope_RopeRep<_CharT,_Alloc>* __b, size_t __s, size_t __l, allocator_type& __a) { _RopeSubstring* __space = typename _Base::_SAlloc(__a).allocate(1); return new(__space) _RopeSubstring(__b, __s, __l, __a); } static _