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sso_string_base.h (__sso_string_base<>::_M_compare): Add...

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2005-12-10  Paolo Carlini  <pcarlini@suse.de>

	* include/ext/sso_string_base.h (__sso_string_base<>::_M_compare):
	Add, specialized for char and wchar_t to immediately return true
	when a string is compared to itself.
	* include/ext/rc_string_base.h (__rc_string_base<>::_M_compare):
	Likewise, for the same _Rep.
	* include/ext/vstring.h (compare(const string&)): Use it.

	* include/ext/sso_string_base.h (__sso_string_base<>::_M_destroy):
	Deallocate passed size + 1.
	(_M_dispose, _M_reserve): Adjust.

From-SVN: r108372
This commit is contained in:
Paolo Carlini 2005-12-11 00:41:29 +00:00 committed by Paolo Carlini
parent 42e25796b5
commit b6105bf2c3
4 changed files with 71 additions and 3 deletions
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13
libstdc++-v3/ChangeLog
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@ -1,3 +1,16 @@
2005-12-10 Paolo Carlini <pcarlini@suse.de>
* include/ext/sso_string_base.h (__sso_string_base<>::_M_compare):
Add, specialized for char and wchar_t to immediately return true
when a string is compared to itself.
* include/ext/rc_string_base.h (__rc_string_base<>::_M_compare):
Likewise, for the same _Rep.
* include/ext/vstring.h (compare(const string&)): Use it.
* include/ext/sso_string_base.h (__sso_string_base<>::_M_destroy):
Deallocate passed size + 1.
(_M_dispose, _M_reserve): Adjust.
2005-12-09 Paolo Carlini <pcarlini@suse.de>
Howard Hinnant <hhinnant@apple.com>

26
libstdc++-v3/include/ext/rc_string_base.h
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@ -334,6 +334,10 @@ namespace __gnu_cxx
void
_M_erase(size_type __pos, size_type __n);
bool
_M_compare(const __rc_string_base&) const
{ return false; }
};
template<typename _CharT, typename _Traits, typename _Alloc>
@ -670,6 +674,28 @@ namespace __gnu_cxx
_M_rep()->_M_set_length(__new_size);
}
template<>
inline bool
__rc_string_base<char, std::char_traits<char>,
std::allocator<char> >::
_M_compare(const __rc_string_base& __rcs) const
{
if (_M_rep() == __rcs._M_rep())
return true;
return false;
}
template<>
inline bool
__rc_string_base<wchar_t, std::char_traits<wchar_t>,
std::allocator<wchar_t> >::
_M_compare(const __rc_string_base& __rcs) const
{
if (_M_rep() == __rcs._M_rep())
return true;
return false;
}
} // namespace __gnu_cxx
#endif /* _RC_STRING_BASE_H */

32
libstdc++-v3/include/ext/sso_string_base.h
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@ -102,7 +102,7 @@ namespace __gnu_cxx
_M_dispose()
{
if (!_M_is_local())
_M_destroy(_M_allocated_capacity + 1);
_M_destroy(_M_allocated_capacity);
}
void
@ -225,13 +225,17 @@ namespace __gnu_cxx
void
_M_erase(size_type __pos, size_type __n);
bool
_M_compare(const __sso_string_base&) const
{ return false; }
};
template<typename _CharT, typename _Traits, typename _Alloc>
void
__sso_string_base<_CharT, _Traits, _Alloc>::
_M_destroy(size_type __size) throw()
{ _CharT_alloc_type(_M_get_allocator()).deallocate(_M_data(), __size); }
{ _CharT_alloc_type(_M_get_allocator()).deallocate(_M_data(), __size + 1); }
template<typename _CharT, typename _Traits, typename _Alloc>
void
@ -498,7 +502,7 @@ namespace __gnu_cxx
else if (!_M_is_local())
{
_S_copy(_M_local_data, _M_data(), _M_length() + 1);
_M_destroy(__capacity + 1);
_M_destroy(__capacity);
_M_data(_M_local_data);
}
}
@ -541,6 +545,28 @@ namespace __gnu_cxx
_M_set_length(_M_length() - __n);
}
template<>
inline bool
__sso_string_base<char, std::char_traits<char>,
std::allocator<char> >::
_M_compare(const __sso_string_base& __rcs) const
{
if (this == &__rcs)
return true;
return false;
}
template<>
inline bool
__sso_string_base<wchar_t, std::char_traits<wchar_t>,
std::allocator<wchar_t> >::
_M_compare(const __sso_string_base& __rcs) const
{
if (this == &__rcs)
return true;
return false;
}
} // namespace __gnu_cxx
#endif /* _SSO_STRING_BASE_H */

3
libstdc++-v3/include/ext/vstring.h
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@ -1665,6 +1665,9 @@ namespace __gnu_cxx
int
compare(const __versa_string& __str) const
{
if (this->_M_compare(__str))
return 0;
const size_type __size = this->size();
const size_type __osize = __str.size();
const size_type __len = std::min(__size, __osize);