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hashtable.h: Fix whitespace and simplify function definitions with trailing return types. 

* include/bits/hashtable.h: Fix whitespace and simplify function
	definitions with trailing return types.

From-SVN: r218309
This commit is contained in:
Jonathan Wakely 2014-12-03 12:00:02 +00:00 committed by Jonathan Wakely
parent e18c1d66ef
commit db97b3b018
2 changed files with 131 additions and 158 deletions
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5
libstdc++-v3/ChangeLog
View File

@ -1,3 +1,8 @@
2014-12-03 Jonathan Wakely <jwakely@redhat.com>
* include/bits/hashtable.h: Fix whitespace and simplify function
definitions with trailing return types.
2014-12-03 Jonathan Wakely <jwakely@redhat.com>
PR libstdc++/64161

284
libstdc++-v3/include/bits/hashtable.h
View File

@ -696,8 +696,8 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION
// Insert with hint, not used when keys are unique.
template<typename _Arg, typename _NodeGenerator>
iterator
_M_insert(const_iterator, _Arg&& __arg, const _NodeGenerator& __node_gen,
std::true_type __uk)
_M_insert(const_iterator, _Arg&& __arg,
const _NodeGenerator& __node_gen, std::true_type __uk)
{
return
_M_insert(std::forward<_Arg>(__arg), __node_gen, __uk).first;
@ -706,7 +706,8 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION
// Insert with hint when keys are not unique.
template<typename _Arg, typename _NodeGenerator>
iterator
_M_insert(const_iterator, _Arg&&, const _NodeGenerator&, std::false_type);
_M_insert(const_iterator, _Arg&&,
const _NodeGenerator&, std::false_type);
size_type
_M_erase(std::true_type, const key_type&);
@ -777,12 +778,11 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION
typename _Alloc, typename _ExtractKey, typename _Equal,
typename _H1, typename _H2, typename _Hash, typename _RehashPolicy,
typename _Traits>
typename _Hashtable<_Key, _Value, _Alloc, _ExtractKey,
_Equal, _H1, _H2, _Hash, _RehashPolicy,
_Traits>::__node_type*
auto
_Hashtable<_Key, _Value, _Alloc, _ExtractKey, _Equal,
_H1, _H2, _Hash, _RehashPolicy, _Traits>::
_M_bucket_begin(size_type __bkt) const
-> __node_type*
{
__node_base* __n = _M_buckets[__bkt];
return __n ? static_cast<__node_type*>(__n->_M_nxt) : nullptr;
@ -851,95 +851,94 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION
typename _Alloc, typename _ExtractKey, typename _Equal,
typename _H1, typename _H2, typename _Hash, typename _RehashPolicy,
typename _Traits>
auto
_Hashtable<_Key, _Value, _Alloc, _ExtractKey, _Equal,
_H1, _H2, _Hash, _RehashPolicy, _Traits>&
_Hashtable<_Key, _Value, _Alloc, _ExtractKey, _Equal,
_H1, _H2, _Hash, _RehashPolicy, _Traits>::operator=(
const _Hashtable<_Key, _Value, _Alloc, _ExtractKey, _Equal,
_H1, _H2, _Hash, _RehashPolicy, _Traits>& __ht)
{
if (&__ht == this)
return *this;
_H1, _H2, _Hash, _RehashPolicy, _Traits>::
operator=(const _Hashtable& __ht)
-> _Hashtable&
{
if (&__ht == this)
return *this;
if (__node_alloc_traits::_S_propagate_on_copy_assign())
{
auto& __this_alloc = this->_M_node_allocator();
auto& __that_alloc = __ht._M_node_allocator();
if (!__node_alloc_traits::_S_always_equal()
&& __this_alloc != __that_alloc)
{
// Replacement allocator cannot free existing storage.
this->_M_deallocate_nodes(_M_begin());
_M_before_begin._M_nxt = nullptr;
_M_deallocate_buckets();
_M_buckets = nullptr;
std::__alloc_on_copy(__this_alloc, __that_alloc);
__hashtable_base::operator=(__ht);
_M_bucket_count = __ht._M_bucket_count;
_M_element_count = __ht._M_element_count;
_M_rehash_policy = __ht._M_rehash_policy;
__try
{
_M_assign(__ht,
[this](const __node_type* __n)
{ return this->_M_allocate_node(__n->_M_v()); });
}
__catch(...)
{
// _M_assign took care of deallocating all memory. Now we
// must make sure this instance remains in a usable state.
_M_reset();
__throw_exception_again;
}
return *this;
}
std::__alloc_on_copy(__this_alloc, __that_alloc);
}
if (__node_alloc_traits::_S_propagate_on_copy_assign())
{
auto& __this_alloc = this->_M_node_allocator();
auto& __that_alloc = __ht._M_node_allocator();
if (!__node_alloc_traits::_S_always_equal()
&& __this_alloc != __that_alloc)
{
// Replacement allocator cannot free existing storage.
this->_M_deallocate_nodes(_M_begin());
_M_before_begin._M_nxt = nullptr;
_M_deallocate_buckets();
_M_buckets = nullptr;
std::__alloc_on_copy(__this_alloc, __that_alloc);
__hashtable_base::operator=(__ht);
_M_bucket_count = __ht._M_bucket_count;
_M_element_count = __ht._M_element_count;
_M_rehash_policy = __ht._M_rehash_policy;
__try
{
_M_assign(__ht,
[this](const __node_type* __n)
{ return this->_M_allocate_node(__n->_M_v()); });
}
__catch(...)
{
// _M_assign took care of deallocating all memory. Now we
// must make sure this instance remains in a usable state.
_M_reset();
__throw_exception_again;
}
return *this;
}
std::__alloc_on_copy(__this_alloc, __that_alloc);
}
// Reuse allocated buckets and nodes.
__bucket_type* __former_buckets = nullptr;
std::size_t __former_bucket_count = _M_bucket_count;
const __rehash_state& __former_state = _M_rehash_policy._M_state();
if (_M_bucket_count != __ht._M_bucket_count)
{
__former_buckets = _M_buckets;
_M_buckets = _M_allocate_buckets(__ht._M_bucket_count);
_M_bucket_count = __ht._M_bucket_count;
}
else
// Reuse allocated buckets and nodes.
__bucket_type* __former_buckets = nullptr;
std::size_t __former_bucket_count = _M_bucket_count;
const __rehash_state& __former_state = _M_rehash_policy._M_state();
if (_M_bucket_count != __ht._M_bucket_count)
{
__former_buckets = _M_buckets;
_M_buckets = _M_allocate_buckets(__ht._M_bucket_count);
_M_bucket_count = __ht._M_bucket_count;
}
else
__builtin_memset(_M_buckets, 0,
_M_bucket_count * sizeof(__bucket_type));
__try
{
__hashtable_base::operator=(__ht);
_M_element_count = __ht._M_element_count;
_M_rehash_policy = __ht._M_rehash_policy;
__reuse_or_alloc_node_type __roan(_M_begin(), *this);
_M_before_begin._M_nxt = nullptr;
_M_assign(__ht,
[&__roan](const __node_type* __n)
{ return __roan(__n->_M_v()); });
if (__former_buckets)
_M_deallocate_buckets(__former_buckets, __former_bucket_count);
}
__catch(...)
{
if (__former_buckets)
{
// Restore previous buckets.
_M_deallocate_buckets();
_M_rehash_policy._M_reset(__former_state);
_M_buckets = __former_buckets;
_M_bucket_count = __former_bucket_count;
}
__builtin_memset(_M_buckets, 0,
_M_bucket_count * sizeof(__bucket_type));
__try
{
__hashtable_base::operator=(__ht);
_M_element_count = __ht._M_element_count;
_M_rehash_policy = __ht._M_rehash_policy;
__reuse_or_alloc_node_type __roan(_M_begin(), *this);
_M_before_begin._M_nxt = nullptr;
_M_assign(__ht,
[&__roan](const __node_type* __n)
{ return __roan(__n->_M_v()); });
if (__former_buckets)
_M_deallocate_buckets(__former_buckets, __former_bucket_count);
}
__catch(...)
{
if (__former_buckets)
{
// Restore previous buckets.
_M_deallocate_buckets();
_M_rehash_policy._M_reset(__former_state);
_M_buckets = __former_buckets;
_M_bucket_count = __former_bucket_count;
}
__builtin_memset(_M_buckets, 0,
_M_bucket_count * sizeof(__bucket_type));
__throw_exception_again;
}
return *this;
}
__throw_exception_again;
}
return *this;
}
template<typename _Key, typename _Value,
typename _Alloc, typename _ExtractKey, typename _Equal,
@ -1297,12 +1296,11 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION
typename _Alloc, typename _ExtractKey, typename _Equal,
typename _H1, typename _H2, typename _Hash, typename _RehashPolicy,
typename _Traits>
typename _Hashtable<_Key, _Value, _Alloc, _ExtractKey, _Equal,
_H1, _H2, _Hash, _RehashPolicy,
_Traits>::iterator
auto
_Hashtable<_Key, _Value, _Alloc, _ExtractKey, _Equal,
_H1, _H2, _Hash, _RehashPolicy, _Traits>::
find(const key_type& __k)
-> iterator
{
__hash_code __code = this->_M_hash_code(__k);
std::size_t __n = _M_bucket_index(__k, __code);
@ -1314,12 +1312,11 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION
typename _Alloc, typename _ExtractKey, typename _Equal,
typename _H1, typename _H2, typename _Hash, typename _RehashPolicy,
typename _Traits>
typename _Hashtable<_Key, _Value, _Alloc, _ExtractKey, _Equal,
_H1, _H2, _Hash, _RehashPolicy,
_Traits>::const_iterator
auto
_Hashtable<_Key, _Value, _Alloc, _ExtractKey, _Equal,
_H1, _H2, _Hash, _RehashPolicy, _Traits>::
find(const key_type& __k) const
-> const_iterator
{
__hash_code __code = this->_M_hash_code(__k);
std::size_t __n = _M_bucket_index(__k, __code);
@ -1331,12 +1328,11 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION
typename _Alloc, typename _ExtractKey, typename _Equal,
typename _H1, typename _H2, typename _Hash, typename _RehashPolicy,
typename _Traits>
typename _Hashtable<_Key, _Value, _Alloc, _ExtractKey, _Equal,
_H1, _H2, _Hash, _RehashPolicy,
_Traits>::size_type
auto
_Hashtable<_Key, _Value, _Alloc, _ExtractKey, _Equal,
_H1, _H2, _Hash, _RehashPolicy, _Traits>::
count(const key_type& __k) const
-> size_type
{
__hash_code __code = this->_M_hash_code(__k);
std::size_t __n = _M_bucket_index(__k, __code);
@ -1364,17 +1360,11 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION
typename _Alloc, typename _ExtractKey, typename _Equal,
typename _H1, typename _H2, typename _Hash, typename _RehashPolicy,
typename _Traits>
std::pair<typename _Hashtable<_Key, _Value, _Alloc,
_ExtractKey, _Equal, _H1,
_H2, _Hash, _RehashPolicy,
_Traits>::iterator,
typename _Hashtable<_Key, _Value, _Alloc,
_ExtractKey, _Equal, _H1,
_H2, _Hash, _RehashPolicy,
_Traits>::iterator>
auto
_Hashtable<_Key, _Value, _Alloc, _ExtractKey, _Equal,
_H1, _H2, _Hash, _RehashPolicy, _Traits>::
equal_range(const key_type& __k)
-> pair<iterator, iterator>
{
__hash_code __code = this->_M_hash_code(__k);
std::size_t __n = _M_bucket_index(__k, __code);
@ -1397,17 +1387,11 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION
typename _Alloc, typename _ExtractKey, typename _Equal,
typename _H1, typename _H2, typename _Hash, typename _RehashPolicy,
typename _Traits>
std::pair<typename _Hashtable<_Key, _Value, _Alloc,
_ExtractKey, _Equal, _H1,
_H2, _Hash, _RehashPolicy,
_Traits>::const_iterator,
typename _Hashtable<_Key, _Value, _Alloc,
_ExtractKey, _Equal, _H1,
_H2, _Hash, _RehashPolicy,
_Traits>::const_iterator>
auto
_Hashtable<_Key, _Value, _Alloc, _ExtractKey, _Equal,
_H1, _H2, _Hash, _RehashPolicy, _Traits>::
equal_range(const key_type& __k) const
-> pair<const_iterator, const_iterator>
{
__hash_code __code = this->_M_hash_code(__k);
std::size_t __n = _M_bucket_index(__k, __code);
@ -1432,13 +1416,12 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION
typename _Alloc, typename _ExtractKey, typename _Equal,
typename _H1, typename _H2, typename _Hash, typename _RehashPolicy,
typename _Traits>
typename _Hashtable<_Key, _Value, _Alloc, _ExtractKey,
_Equal, _H1, _H2, _Hash, _RehashPolicy,
_Traits>::__node_base*
auto
_Hashtable<_Key, _Value, _Alloc, _ExtractKey, _Equal,
_H1, _H2, _Hash, _RehashPolicy, _Traits>::
_M_find_before_node(size_type __n, const key_type& __k,
__hash_code __code) const
-> __node_base*
{
__node_base* __prev_p = _M_buckets[__n];
if (!__prev_p)
@ -1516,12 +1499,11 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION
typename _Alloc, typename _ExtractKey, typename _Equal,
typename _H1, typename _H2, typename _Hash, typename _RehashPolicy,
typename _Traits>
typename _Hashtable<_Key, _Value, _Alloc, _ExtractKey,
_Equal, _H1, _H2, _Hash, _RehashPolicy,
_Traits>::__node_base*
auto
_Hashtable<_Key, _Value, _Alloc, _ExtractKey, _Equal,
_H1, _H2, _Hash, _RehashPolicy, _Traits>::
_M_get_previous_node(size_type __bkt, __node_base* __n)
-> __node_base*
{
__node_base* __prev_n = _M_buckets[__bkt];
while (__prev_n->_M_nxt != __n)
@ -1534,13 +1516,11 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION
typename _H1, typename _H2, typename _Hash, typename _RehashPolicy,
typename _Traits>
template<typename... _Args>
std::pair<typename _Hashtable<_Key, _Value, _Alloc,
_ExtractKey, _Equal, _H1,
_H2, _Hash, _RehashPolicy,
_Traits>::iterator, bool>
auto
_Hashtable<_Key, _Value, _Alloc, _ExtractKey, _Equal,
_H1, _H2, _Hash, _RehashPolicy, _Traits>::
_M_emplace(std::true_type, _Args&&... __args)
-> pair<iterator, bool>
{
// First build the node to get access to the hash code
__node_type* __node = this->_M_allocate_node(std::forward<_Args>(__args)...);
@ -1574,12 +1554,11 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION
typename _H1, typename _H2, typename _Hash, typename _RehashPolicy,
typename _Traits>
template<typename... _Args>
typename _Hashtable<_Key, _Value, _Alloc, _ExtractKey, _Equal,
_H1, _H2, _Hash, _RehashPolicy,
_Traits>::iterator
auto
_Hashtable<_Key, _Value, _Alloc, _ExtractKey, _Equal,
_H1, _H2, _Hash, _RehashPolicy, _Traits>::
_M_emplace(const_iterator __hint, std::false_type, _Args&&... __args)
-> iterator
{
// First build the node to get its hash code.
__node_type* __node =
@ -1603,13 +1582,12 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION
typename _Alloc, typename _ExtractKey, typename _Equal,
typename _H1, typename _H2, typename _Hash, typename _RehashPolicy,
typename _Traits>
typename _Hashtable<_Key, _Value, _Alloc, _ExtractKey, _Equal,
_H1, _H2, _Hash, _RehashPolicy,
_Traits>::iterator
auto
_Hashtable<_Key, _Value, _Alloc, _ExtractKey, _Equal,
_H1, _H2, _Hash, _RehashPolicy, _Traits>::
_M_insert_unique_node(size_type __bkt, __hash_code __code,
__node_type* __node)
-> iterator
{
const __rehash_state& __saved_state = _M_rehash_policy._M_state();
std::pair<bool, std::size_t> __do_rehash
@ -1643,13 +1621,12 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION
typename _Alloc, typename _ExtractKey, typename _Equal,
typename _H1, typename _H2, typename _Hash, typename _RehashPolicy,
typename _Traits>
typename _Hashtable<_Key, _Value, _Alloc, _ExtractKey, _Equal,
_H1, _H2, _Hash, _RehashPolicy,
_Traits>::iterator
auto
_Hashtable<_Key, _Value, _Alloc, _ExtractKey, _Equal,
_H1, _H2, _Hash, _RehashPolicy, _Traits>::
_M_insert_multi_node(__node_type* __hint, __hash_code __code,
__node_type* __node)
-> iterator
{
const __rehash_state& __saved_state = _M_rehash_policy._M_state();
std::pair<bool, std::size_t> __do_rehash
@ -1709,13 +1686,11 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION
typename _H1, typename _H2, typename _Hash, typename _RehashPolicy,
typename _Traits>
template<typename _Arg, typename _NodeGenerator>
std::pair<typename _Hashtable<_Key, _Value, _Alloc,
_ExtractKey, _Equal, _H1,
_H2, _Hash, _RehashPolicy,
_Traits>::iterator, bool>
auto
_Hashtable<_Key, _Value, _Alloc, _ExtractKey, _Equal,
_H1, _H2, _Hash, _RehashPolicy, _Traits>::
_M_insert(_Arg&& __v, const _NodeGenerator& __node_gen, std::true_type)
-> pair<iterator, bool>
{
const key_type& __k = this->_M_extract()(__v);
__hash_code __code = this->_M_hash_code(__k);
@ -1735,14 +1710,12 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION
typename _H1, typename _H2, typename _Hash, typename _RehashPolicy,
typename _Traits>
template<typename _Arg, typename _NodeGenerator>
typename _Hashtable<_Key, _Value, _Alloc, _ExtractKey, _Equal,
_H1, _H2, _Hash, _RehashPolicy,
_Traits>::iterator
auto
_Hashtable<_Key, _Value, _Alloc, _ExtractKey, _Equal,
_H1, _H2, _Hash, _RehashPolicy, _Traits>::
_M_insert(const_iterator __hint, _Arg&& __v,
const _NodeGenerator& __node_gen,
std::false_type)
const _NodeGenerator& __node_gen, std::false_type)
-> iterator
{
// First compute the hash code so that we don't do anything if it
// throws.
@ -1758,12 +1731,11 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION
typename _Alloc, typename _ExtractKey, typename _Equal,
typename _H1, typename _H2, typename _Hash, typename _RehashPolicy,
typename _Traits>
typename _Hashtable<_Key, _Value, _Alloc, _ExtractKey, _Equal,
_H1, _H2, _Hash, _RehashPolicy,
_Traits>::iterator
auto
_Hashtable<_Key, _Value, _Alloc, _ExtractKey, _Equal,
_H1, _H2, _Hash, _RehashPolicy, _Traits>::
erase(const_iterator __it)
-> iterator
{
__node_type* __n = __it._M_cur;
std::size_t __bkt = _M_bucket_index(__n);
@ -1779,12 +1751,11 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION
typename _Alloc, typename _ExtractKey, typename _Equal,
typename _H1, typename _H2, typename _Hash, typename _RehashPolicy,
typename _Traits>
typename _Hashtable<_Key, _Value, _Alloc, _ExtractKey, _Equal,
_H1, _H2, _Hash, _RehashPolicy,
_Traits>::iterator
auto
_Hashtable<_Key, _Value, _Alloc, _ExtractKey, _Equal,
_H1, _H2, _Hash, _RehashPolicy, _Traits>::
_M_erase(size_type __bkt, __node_base* __prev_n, __node_type* __n)
-> iterator
{
if (__prev_n == _M_buckets[__bkt])
_M_remove_bucket_begin(__bkt, __n->_M_next(),
@ -1808,12 +1779,11 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION
typename _Alloc, typename _ExtractKey, typename _Equal,
typename _H1, typename _H2, typename _Hash, typename _RehashPolicy,
typename _Traits>
typename _Hashtable<_Key, _Value, _Alloc, _ExtractKey, _Equal,
_H1, _H2, _Hash, _RehashPolicy,
_Traits>::size_type
auto
_Hashtable<_Key, _Value, _Alloc, _ExtractKey, _Equal,
_H1, _H2, _Hash, _RehashPolicy, _Traits>::
_M_erase(std::true_type, const key_type& __k)
-> size_type
{
__hash_code __code = this->_M_hash_code(__k);
std::size_t __bkt = _M_bucket_index(__k, __code);
@ -1833,12 +1803,11 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION
typename _Alloc, typename _ExtractKey, typename _Equal,
typename _H1, typename _H2, typename _Hash, typename _RehashPolicy,
typename _Traits>
typename _Hashtable<_Key, _Value, _Alloc, _ExtractKey, _Equal,
_H1, _H2, _Hash, _RehashPolicy,
_Traits>::size_type
auto
_Hashtable<_Key, _Value, _Alloc, _ExtractKey, _Equal,
_H1, _H2, _Hash, _RehashPolicy, _Traits>::
_M_erase(std::false_type, const key_type& __k)
-> size_type
{
__hash_code __code = this->_M_hash_code(__k);
std::size_t __bkt = _M_bucket_index(__k, __code);
@ -1890,12 +1859,11 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION
typename _Alloc, typename _ExtractKey, typename _Equal,
typename _H1, typename _H2, typename _Hash, typename _RehashPolicy,
typename _Traits>
typename _Hashtable<_Key, _Value, _Alloc, _ExtractKey, _Equal,
_H1, _H2, _Hash, _RehashPolicy,
_Traits>::iterator
auto
_Hashtable<_Key, _Value, _Alloc, _ExtractKey, _Equal,
_H1, _H2, _Hash, _RehashPolicy, _Traits>::
erase(const_iterator __first, const_iterator __last)
-> iterator
{
__node_type* __n = __first._M_cur;
__node_type* __last_n = __last._M_cur;