--- /dev/null
+/*
+ * Copyright (c) 2003
+ * Francois Dumont
+ *
+ * This material is provided "as is", with absolutely no warranty expressed
+ * or implied. Any use is at your own risk.
+ *
+ * Permission to use or copy this software for any purpose is hereby granted
+ * without fee, provided the above notices are retained on all copies.
+ * Permission to modify the code and to distribute modified code is granted,
+ * provided the above notices are retained, and a notice that the code was
+ * modified is included with the above copyright notice.
+ *
+ */
+
+/*
+ * All the necessary methods used for template expressions with basic_string
+ * This file do not have to be macro guarded as it is only used in the _string.h
+ * file and it is a part of the basic_string definition.
+ */
+
+public:
+ template <class _Left, class _Right, class _StorageDir>
+ basic_string(_STLP_PRIV __bstr_sum<_CharT, _Traits, _Alloc, _Left, _Right, _StorageDir> const& __s)
+ : _STLP_STRING_SUM_BASE(_Reserve_t(), __s.size(), __s.get_allocator())
+ { _M_append_sum(__s); }
+
+ template <class _Left, class _Right, class _StorageDir>
+ basic_string(_STLP_PRIV __bstr_sum<_CharT, _Traits, _Alloc, _Left, _Right, _StorageDir> const& __s,
+ size_type __pos, size_type __n = npos,
+ const allocator_type& __a = allocator_type())
+ : _STLP_STRING_SUM_BASE(_Reserve_t(), (__pos <= __s.size()) ? ((min) (__n, __s.size() - __pos)) : 0, __a) {
+ size_type __size = __s.size();
+ if (__pos > __size)
+ this->_M_throw_out_of_range();
+ else
+ _M_append_sum_pos(__s, __pos, (min) (__n, __size - __pos));
+ }
+
+private:
+ _CharT* _M_append_fast(_STLP_PRIV __char_wrapper<_CharT> __c, _CharT *__buf) {
+ _STLP_STD::_Copy_Construct(__buf, __c.getValue());
+ return __buf + 1;
+ }
+ _CharT* _M_append_fast(_CharT const* __s, size_type __s_size, _CharT *__buf)
+ { return uninitialized_copy(__s, __s + __s_size, __buf); }
+ _CharT* _M_append_fast(_STLP_PRIV __cstr_wrapper<_CharT> const& __s, _CharT *__buf)
+ { return _M_append_fast(__s.c_str(), __s.size(), __buf); }
+ _CharT* _M_append_fast(_STLP_PRIV __bstr_wrapper<_CharT, _Traits, _Alloc> __s, _CharT *__buf)
+ { return _M_append_fast(__s.b_str(), __buf); }
+ _CharT* _M_append_fast(_Self const& __s, _CharT *__buf)
+ { return _M_append_fast(__s.data(), __s.size(), __buf); }
+ _CharT* _M_append_fast(_STLP_PRIV __sum_storage_elem<_CharT, _Traits, _Alloc> const&, _CharT *__buf)
+ { return __buf; }
+ template <class _Left, class _Right, class _StorageDir>
+ _CharT* _M_append_fast(_STLP_PRIV __bstr_sum<_CharT, _Traits, _Alloc, _Left, _Right, _StorageDir> const& __s, _CharT *__buf)
+ { return _M_append_fast(__s.getRhs(), _M_append_fast(__s.getLhs(), __buf)); }
+
+ _CharT* _M_append_fast_pos(_STLP_PRIV __char_wrapper<_CharT> __c, _CharT *__buf, size_type /*__pos*/, size_type __n) {
+ if (__n == 0)
+ return __buf;
+ _STLP_STD::_Copy_Construct(__buf, __c.getValue());
+ return __buf + 1;
+ }
+ _CharT* _M_append_fast_pos(_CharT const* __s, size_type __s_size, _CharT *__buf,
+ size_type __pos, size_type __n)
+ { return uninitialized_copy(__s + __pos, __s + __pos + (min)(__n, __s_size - __pos), __buf); }
+ _CharT* _M_append_fast_pos(_STLP_PRIV __cstr_wrapper<_CharT> const& __s, _CharT *__buf,
+ size_type __pos, size_type __n)
+ { return _M_append_fast_pos(__s.c_str(), __s.size(), __buf, __pos, __n); }
+ _CharT* _M_append_fast_pos(_STLP_PRIV __bstr_wrapper<_CharT, _Traits, _Alloc> __s, _CharT *__buf,
+ size_type __pos, size_type __n)
+ { return _M_append_fast_pos(__s.b_str(), __buf, __pos, __n); }
+ _CharT* _M_append_fast_pos(_Self const& __s, _CharT *__buf,
+ size_type __pos, size_type __n)
+ { return _M_append_fast_pos(__s.data(), __s.size(), __buf, __pos, __n); }
+ _CharT* _M_append_fast_pos(_STLP_PRIV __sum_storage_elem<_CharT, _Traits, _Alloc> const&, _CharT *__buf,
+ size_type, size_type)
+ { return __buf; }
+
+ template <class _Left, class _Right, class _StorageDir>
+ _CharT* _M_append_fast_pos(_STLP_PRIV __bstr_sum<_CharT, _Traits, _Alloc, _Left, _Right, _StorageDir> const& __s,
+ _CharT *__buf, size_type __pos, size_type __n) {
+ if (__n == 0) {
+ return __buf;
+ }
+ size_type __lhs_size = __s.getLhs().size();
+ if (__pos < __lhs_size) {
+ if (__n < (__lhs_size - __pos)) {
+ return _M_append_fast_pos(__s.getLhs(), __buf, __pos, __n);
+ } else {
+ return _M_append_fast_pos(__s.getRhs(), _M_append_fast_pos(__s.getLhs(), __buf, __pos, __n),
+ 0, __n - (__lhs_size - __pos));
+ }
+ } else {
+ return _M_append_fast_pos(__s.getRhs(), __buf, __pos - __lhs_size, __n);
+ }
+ }
+
+ /* Note: We always force use of dynamic buffer if the short string optim option is activated
+ * to avoid complicated code if the basic_string was instanciated with a non POD type.
+ * In such a case we should use assignment for objects in the static array something that we
+ * do not do.
+ */
+ size_type _M_get_additional_size(size_type __new_size, const __false_type& /*_Char_Is_POD*/) const {
+#if defined (_STLP_USE_SHORT_STRING_OPTIM)
+ //To avoid problem with the string assumptions, never allocate a dynamic buffer smaller or equal
+ //than the static one:
+ if (__new_size < _Base::_DEFAULT_SIZE + 1)
+ return (_Base::_DEFAULT_SIZE + 1) - __new_size;
+#endif /* _STLP_USE_SHORT_STRING_OPTIM */
+ return 0;
+ }
+ size_type _M_get_additional_size(size_type, const __true_type& /*_Char_Is_POD*/) const
+ { return 0; }
+
+ template <class _Left, class _Right, class _StorageDir>
+ _Self& _M_append_sum (_STLP_PRIV __bstr_sum<_CharT, _Traits, _Alloc, _Left, _Right, _StorageDir> const& __s) {
+ size_type __s_size = __s.size();
+ if (__s_size == 0)
+ return *this;
+ const size_type __old_size = this->size();
+ if (__s_size > this->max_size() || __old_size > (this->max_size() - __s_size))
+ this->_M_throw_length_error();
+ size_type __offset_size = _M_get_additional_size(__old_size + __s_size, _Char_Is_POD());
+ if (__old_size + __s_size + __offset_size > this->capacity()) {
+ const size_type __len = __old_size + __offset_size + (max)(__old_size, __s_size) + 1;
+ pointer __new_start = this->_M_end_of_storage.allocate(__len);
+ pointer __new_finish = __new_start;
+ _STLP_TRY {
+ __new_finish = uninitialized_copy(this->_M_Start(), this->_M_Finish(), __new_start);
+ __new_finish = this->_M_append_fast(__s, __new_finish);
+ this->_M_construct_null(__new_finish);
+ }
+ _STLP_UNWIND((_STLP_STD::_Destroy_Range(__new_start,__new_finish),
+ this->_M_end_of_storage.deallocate(__new_start,__len)))
+ this->_M_destroy_range();
+ this->_M_deallocate_block();
+ this->_M_reset(__new_start, __new_finish, __new_start + __len);
+ }
+ else {
+ _M_append_sum_no_overflow(__s, 0, __s_size);
+ }
+ return *this;
+ }
+
+ template <class _Left, class _Right, class _StorageDir>
+ _Self& _M_append_sum_pos(_STLP_PRIV __bstr_sum<_CharT, _Traits, _Alloc, _Left, _Right, _StorageDir> const& __s,
+ size_type __pos, size_type __n) {
+ size_type __s_size = (min)(__s.size() - __pos, __n);
+ if (__s_size == 0)
+ return *this;
+ const size_type __old_size = this->size();
+ if (__s_size > this->max_size() || __old_size > (this->max_size() - __s_size))
+ this->_M_throw_length_error();
+ size_type __offset_size = _M_get_additional_size(__old_size + __s_size, _Char_Is_POD());
+ if (__old_size + __s_size + __offset_size > this->capacity()) {
+ const size_type __len = __old_size + __offset_size + (max)(__old_size, __s_size) + 1;
+ pointer __new_start = this->_M_end_of_storage.allocate(__len);
+ pointer __new_finish = __new_start;
+ _STLP_TRY {
+ __new_finish = uninitialized_copy(this->_M_Start(), this->_M_Finish(), __new_start);
+ __new_finish = _M_append_fast_pos(__s, __new_finish, __pos, __s_size);
+ this->_M_construct_null(__new_finish);
+ }
+ _STLP_UNWIND((_STLP_STD::_Destroy_Range(__new_start,__new_finish),
+ this->_M_end_of_storage.deallocate(__new_start,__len)))
+ this->_M_destroy_range();
+ this->_M_deallocate_block();
+ this->_M_reset(__new_start, __new_finish, __new_start + __len);
+ }
+ else {
+ _M_append_sum_no_overflow(__s, __pos, __s_size);
+ }
+ return *this;
+ }
+
+ template <class _Left, class _Right, class _StorageDir>
+ void _M_append_sum_no_overflow(_STLP_PRIV __bstr_sum<_CharT, _Traits, _Alloc, _Left, _Right, _StorageDir> const& __s,
+ size_type __pos, size_type __n) {
+ pointer __finish = this->_M_Finish();
+ _M_append_fast_pos(__s, __finish + 1, __pos + 1, __n - 1);
+ _STLP_TRY {
+ this->_M_construct_null(__finish + __n);
+ }
+ _STLP_UNWIND(this->_M_destroy_ptr_range(__finish + 1, __finish + __n))
+ /* The call to the traits::assign method is only important for non POD types because the instance
+ * pointed to by _M_finish has been constructed (default constructor) and should not be constructed
+ * (copy constructor) once again. For POD it is irrelevant, uninitialized_copy could be fine,
+ * but we are not going to make two implementations just for that.
+ */
+ _Traits::assign(*this->_M_finish, __s[__pos]);
+ this->_M_finish += __n;
+ }
projects / polintos / scott / priv.git / blobdiff