stl_slist.h
资源名称:Vc_STL.rar [点击查看]
上传用户:sichengcw
上传日期:2009-02-17
资源大小:202k
文件大小:20k
源码类别:
STL
开发平台:
Visual C++
- /*
- * 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.
- *
- */
- /* NOTE: This is an internal header file, included by other STL headers.
- * You should not attempt to use it directly.
- */
- #ifndef __SGI_STL_INTERNAL_SLIST_H
- #define __SGI_STL_INTERNAL_SLIST_H
- __STL_BEGIN_NAMESPACE
- #if defined(__sgi) && !defined(__GNUC__) && (_MIPS_SIM != _MIPS_SIM_ABI32)
- #pragma set woff 1174
- #endif
- struct __slist_node_base
- {
- __slist_node_base* next;
- };
- inline __slist_node_base* __slist_make_link(__slist_node_base* prev_node,
- __slist_node_base* new_node)
- {
- new_node->next = prev_node->next;
- prev_node->next = new_node;
- return new_node;
- }
- inline __slist_node_base* __slist_previous(__slist_node_base* head,
- const __slist_node_base* node)
- {
- while (head && head->next != node)
- head = head->next;
- return head;
- }
- inline const __slist_node_base* __slist_previous(const __slist_node_base* head,
- const __slist_node_base* node)
- {
- while (head && head->next != node)
- head = head->next;
- return head;
- }
- inline void __slist_splice_after(__slist_node_base* pos,
- __slist_node_base* before_first,
- __slist_node_base* before_last)
- {
- if (pos != before_first && pos != before_last) {
- __slist_node_base* first = before_first->next;
- __slist_node_base* after = pos->next;
- before_first->next = before_last->next;
- pos->next = first;
- before_last->next = after;
- }
- }
- inline __slist_node_base* __slist_reverse(__slist_node_base* node)
- {
- __slist_node_base* result = node;
- node = node->next;
- result->next = 0;
- while(node) {
- __slist_node_base* next = node->next;
- node->next = result;
- result = node;
- node = next;
- }
- return result;
- }
- template <class T>
- struct __slist_node : public __slist_node_base
- {
- T data;
- };
- struct __slist_iterator_base
- {
- typedef size_t size_type;
- typedef ptrdiff_t difference_type;
- typedef forward_iterator_tag iterator_category;
- __slist_node_base* node;
- __slist_iterator_base(__slist_node_base* x) : node(x) {}
- void incr() { node = node->next; }
- bool operator==(const __slist_iterator_base& x) const {
- return node == x.node;
- }
- bool operator!=(const __slist_iterator_base& x) const {
- return node != x.node;
- }
- };
- template <class T, class Ref, class Ptr>
- struct __slist_iterator : public __slist_iterator_base
- {
- typedef __slist_iterator<T, T&, T*> iterator;
- typedef __slist_iterator<T, const T&, const T*> const_iterator;
- typedef __slist_iterator<T, Ref, Ptr> self;
- typedef T value_type;
- typedef Ptr pointer;
- typedef Ref reference;
- typedef __slist_node<T> list_node;
- __slist_iterator(list_node* x) : __slist_iterator_base(x) {}
- __slist_iterator() : __slist_iterator_base(0) {}
- __slist_iterator(const iterator& x) : __slist_iterator_base(x.node) {}
- reference operator*() const { return ((list_node*) node)->data; }
- #ifndef __SGI_STL_NO_ARROW_OPERATOR
- pointer operator->() const { return &(operator*()); }
- #endif /* __SGI_STL_NO_ARROW_OPERATOR */
- self& operator++()
- {
- incr();
- return *this;
- }
- self operator++(int)
- {
- self tmp = *this;
- incr();
- return tmp;
- }
- };
- #ifndef __STL_CLASS_PARTIAL_SPECIALIZATION
- inline ptrdiff_t*
- distance_type(const __slist_iterator_base&)
- {
- return 0;
- }
- inline forward_iterator_tag
- iterator_category(const __slist_iterator_base&)
- {
- return forward_iterator_tag();
- }
- template <class T, class Ref, class Ptr>
- inline T*
- value_type(const __slist_iterator<T, Ref, Ptr>&) {
- return 0;
- }
- #endif /* __STL_CLASS_PARTIAL_SPECIALIZATION */
- inline size_t __slist_size(__slist_node_base* node)
- {
- size_t result = 0;
- for ( ; node != 0; node = node->next)
- ++result;
- return result;
- }
- template <class T, class Alloc = alloc>
- class slist
- {
- public:
- typedef T value_type;
- typedef value_type* pointer;
- typedef const value_type* const_pointer;
- typedef value_type& reference;
- typedef const value_type& const_reference;
- typedef size_t size_type;
- typedef ptrdiff_t difference_type;
- typedef __slist_iterator<T, T&, T*> iterator;
- typedef __slist_iterator<T, const T&, const T*> const_iterator;
- private:
- typedef __slist_node<T> list_node;
- typedef __slist_node_base list_node_base;
- typedef __slist_iterator_base iterator_base;
- typedef simple_alloc<list_node, Alloc> list_node_allocator;
- static list_node* create_node(const value_type& x) {
- list_node* node = list_node_allocator::allocate();
- __STL_TRY {
- construct(&node->data, x);
- node->next = 0;
- }
- __STL_UNWIND(list_node_allocator::deallocate(node));
- return node;
- }
- static void destroy_node(list_node* node) {
- destroy(&node->data);
- list_node_allocator::deallocate(node);
- }
- void fill_initialize(size_type n, const value_type& x) {
- head.next = 0;
- __STL_TRY {
- _insert_after_fill(&head, n, x);
- }
- __STL_UNWIND(clear());
- }
- #ifdef __STL_MEMBER_TEMPLATES
- template <class InputIterator>
- void range_initialize(InputIterator first, InputIterator last) {
- head.next = 0;
- __STL_TRY {
- _insert_after_range(&head, first, last);
- }
- __STL_UNWIND(clear());
- }
- #else /* __STL_MEMBER_TEMPLATES */
- void range_initialize(const value_type* first, const value_type* last) {
- head.next = 0;
- __STL_TRY {
- _insert_after_range(&head, first, last);
- }
- __STL_UNWIND(clear());
- }
- void range_initialize(const_iterator first, const_iterator last) {
- head.next = 0;
- __STL_TRY {
- _insert_after_range(&head, first, last);
- }
- __STL_UNWIND(clear());
- }
- #endif /* __STL_MEMBER_TEMPLATES */
- private:
- list_node_base head;
- public:
- slist() { head.next = 0; }
- slist(size_type n, const value_type& x) { fill_initialize(n, x); }
- slist(int n, const value_type& x) { fill_initialize(n, x); }
- slist(long n, const value_type& x) { fill_initialize(n, x); }
- explicit slist(size_type n) { fill_initialize(n, value_type()); }
- #ifdef __STL_MEMBER_TEMPLATES
- template <class InputIterator>
- slist(InputIterator first, InputIterator last) {
- range_initialize(first, last);
- }
- #else /* __STL_MEMBER_TEMPLATES */
- slist(const_iterator first, const_iterator last) {
- range_initialize(first, last);
- }
- slist(const value_type* first, const value_type* last) {
- range_initialize(first, last);
- }
- #endif /* __STL_MEMBER_TEMPLATES */
- slist(const slist& L) { range_initialize(L.begin(), L.end()); }
- slist& operator= (const slist& L);
- ~slist() { clear(); }
- public:
- iterator begin() { return iterator((list_node*)head.next); }
- const_iterator begin() const { return const_iterator((list_node*)head.next);}
- iterator end() { return iterator(0); }
- const_iterator end() const { return const_iterator(0); }
- size_type size() const { return __slist_size(head.next); }
- size_type max_size() const { return size_type(-1); }
- bool empty() const { return head.next == 0; }
- void swap(slist& L)
- {
- list_node_base* tmp = head.next;
- head.next = L.head.next;
- L.head.next = tmp;
- }
- public:
- friend bool operator== __STL_NULL_TMPL_ARGS(const slist<T, Alloc>& L1,
- const slist<T, Alloc>& L2);
- public:
- reference front() { return ((list_node*) head.next)->data; }
- const_reference front() const { return ((list_node*) head.next)->data; }
- void push_front(const value_type& x) {
- __slist_make_link(&head, create_node(x));
- }
- void pop_front() {
- list_node* node = (list_node*) head.next;
- head.next = node->next;
- destroy_node(node);
- }
- iterator previous(const_iterator pos) {
- return iterator((list_node*) __slist_previous(&head, pos.node));
- }
- const_iterator previous(const_iterator pos) const {
- return const_iterator((list_node*) __slist_previous(&head, pos.node));
- }
- private:
- list_node* _insert_after(list_node_base* pos, const value_type& x) {
- return (list_node*) (__slist_make_link(pos, create_node(x)));
- }
- void _insert_after_fill(list_node_base* pos,
- size_type n, const value_type& x) {
- for (size_type i = 0; i < n; ++i)
- pos = __slist_make_link(pos, create_node(x));
- }
- #ifdef __STL_MEMBER_TEMPLATES
- template <class InIter>
- void _insert_after_range(list_node_base* pos, InIter first, InIter last) {
- while (first != last) {
- pos = __slist_make_link(pos, create_node(*first));
- ++first;
- }
- }
- #else /* __STL_MEMBER_TEMPLATES */
- void _insert_after_range(list_node_base* pos,
- const_iterator first, const_iterator last) {
- while (first != last) {
- pos = __slist_make_link(pos, create_node(*first));
- ++first;
- }
- }
- void _insert_after_range(list_node_base* pos,
- const value_type* first, const value_type* last) {
- while (first != last) {
- pos = __slist_make_link(pos, create_node(*first));
- ++first;
- }
- }
- #endif /* __STL_MEMBER_TEMPLATES */
- list_node_base* erase_after(list_node_base* pos) {
- list_node* next = (list_node*) (pos->next);
- list_node_base* next_next = next->next;
- pos->next = next_next;
- destroy_node(next);
- return next_next;
- }
- list_node_base* erase_after(list_node_base* before_first,
- list_node_base* last_node) {
- list_node* cur = (list_node*) (before_first->next);
- while (cur != last_node) {
- list_node* tmp = cur;
- cur = (list_node*) cur->next;
- destroy_node(tmp);
- }
- before_first->next = last_node;
- return last_node;
- }
- public:
- iterator insert_after(iterator pos, const value_type& x) {
- return iterator(_insert_after(pos.node, x));
- }
- iterator insert_after(iterator pos) {
- return insert_after(pos, value_type());
- }
- void insert_after(iterator pos, size_type n, const value_type& x) {
- _insert_after_fill(pos.node, n, x);
- }
- void insert_after(iterator pos, int n, const value_type& x) {
- _insert_after_fill(pos.node, (size_type) n, x);
- }
- void insert_after(iterator pos, long n, const value_type& x) {
- _insert_after_fill(pos.node, (size_type) n, x);
- }
- #ifdef __STL_MEMBER_TEMPLATES
- template <class InIter>
- void insert_after(iterator pos, InIter first, InIter last) {
- _insert_after_range(pos.node, first, last);
- }
- #else /* __STL_MEMBER_TEMPLATES */
- void insert_after(iterator pos, const_iterator first, const_iterator last) {
- _insert_after_range(pos.node, first, last);
- }
- void insert_after(iterator pos,
- const value_type* first, const value_type* last) {
- _insert_after_range(pos.node, first, last);
- }
- #endif /* __STL_MEMBER_TEMPLATES */
- iterator insert(iterator pos, const value_type& x) {
- return iterator(_insert_after(__slist_previous(&head, pos.node), x));
- }
- iterator insert(iterator pos) {
- return iterator(_insert_after(__slist_previous(&head, pos.node),
- value_type()));
- }
- void insert(iterator pos, size_type n, const value_type& x) {
- _insert_after_fill(__slist_previous(&head, pos.node), n, x);
- }
- void insert(iterator pos, int n, const value_type& x) {
- _insert_after_fill(__slist_previous(&head, pos.node), (size_type) n, x);
- }
- void insert(iterator pos, long n, const value_type& x) {
- _insert_after_fill(__slist_previous(&head, pos.node), (size_type) n, x);
- }
- #ifdef __STL_MEMBER_TEMPLATES
- template <class InIter>
- void insert(iterator pos, InIter first, InIter last) {
- _insert_after_range(__slist_previous(&head, pos.node), first, last);
- }
- #else /* __STL_MEMBER_TEMPLATES */
- void insert(iterator pos, const_iterator first, const_iterator last) {
- _insert_after_range(__slist_previous(&head, pos.node), first, last);
- }
- void insert(iterator pos, const value_type* first, const value_type* last) {
- _insert_after_range(__slist_previous(&head, pos.node), first, last);
- }
- #endif /* __STL_MEMBER_TEMPLATES */
- public:
- iterator erase_after(iterator pos) {
- return iterator((list_node*)erase_after(pos.node));
- }
- iterator erase_after(iterator before_first, iterator last) {
- return iterator((list_node*)erase_after(before_first.node, last.node));
- }
- iterator erase(iterator pos) {
- return (list_node*) erase_after(__slist_previous(&head, pos.node));
- }
- iterator erase(iterator first, iterator last) {
- return (list_node*) erase_after(__slist_previous(&head, first.node),
- last.node);
- }
- void resize(size_type new_size, const T& x);
- void resize(size_type new_size) { resize(new_size, T()); }
- void clear() { erase_after(&head, 0); }
- public:
- // Moves the range [before_first + 1, before_last + 1) to *this,
- // inserting it immediately after pos. This is constant time.
- void splice_after(iterator pos,
- iterator before_first, iterator before_last)
- {
- if (before_first != before_last)
- __slist_splice_after(pos.node, before_first.node, before_last.node);
- }
- // Moves the element that follows prev to *this, inserting it immediately
- // after pos. This is constant time.
- void splice_after(iterator pos, iterator prev)
- {
- __slist_splice_after(pos.node, prev.node, prev.node->next);
- }
- // Linear in distance(begin(), pos), and linear in L.size().
- void splice(iterator pos, slist& L) {
- if (L.head.next)
- __slist_splice_after(__slist_previous(&head, pos.node),
- &L.head,
- __slist_previous(&L.head, 0));
- }
- // Linear in distance(begin(), pos), and in distance(L.begin(), i).
- void splice(iterator pos, slist& L, iterator i) {
- __slist_splice_after(__slist_previous(&head, pos.node),
- __slist_previous(&L.head, i.node),
- i.node);
- }
- // Linear in distance(begin(), pos), in distance(L.begin(), first),
- // and in distance(first, last).
- void splice(iterator pos, slist& L, iterator first, iterator last)
- {
- if (first != last)
- __slist_splice_after(__slist_previous(&head, pos.node),
- __slist_previous(&L.head, first.node),
- __slist_previous(first.node, last.node));
- }
- public:
- void reverse() { if (head.next) head.next = __slist_reverse(head.next); }
- void remove(const T& val);
- void unique();
- void merge(slist& L);
- void sort();
- #ifdef __STL_MEMBER_TEMPLATES
- template <class Predicate> void remove_if(Predicate pred);
- template <class BinaryPredicate> void unique(BinaryPredicate pred);
- template <class StrictWeakOrdering> void merge(slist&, StrictWeakOrdering);
- template <class StrictWeakOrdering> void sort(StrictWeakOrdering comp);
- #endif /* __STL_MEMBER_TEMPLATES */
- };
- template <class T, class Alloc>
- slist<T, Alloc>& slist<T,Alloc>::operator=(const slist<T, Alloc>& L)
- {
- if (&L != this) {
- list_node_base* p1 = &head;
- list_node* n1 = (list_node*) head.next;
- const list_node* n2 = (const list_node*) L.head.next;
- while (n1 && n2) {
- n1->data = n2->data;
- p1 = n1;
- n1 = (list_node*) n1->next;
- n2 = (const list_node*) n2->next;
- }
- if (n2 == 0)
- erase_after(p1, 0);
- else
- _insert_after_range(p1,
- const_iterator((list_node*)n2), const_iterator(0));
- }
- return *this;
- }
- template <class T, class Alloc>
- bool operator==(const slist<T, Alloc>& L1, const slist<T, Alloc>& L2)
- {
- typedef typename slist<T,Alloc>::list_node list_node;
- list_node* n1 = (list_node*) L1.head.next;
- list_node* n2 = (list_node*) L2.head.next;
- while (n1 && n2 && n1->data == n2->data) {
- n1 = (list_node*) n1->next;
- n2 = (list_node*) n2->next;
- }
- return n1 == 0 && n2 == 0;
- }
- template <class T, class Alloc>
- inline bool operator<(const slist<T, Alloc>& L1, const slist<T, Alloc>& L2)
- {
- return lexicographical_compare(L1.begin(), L1.end(), L2.begin(), L2.end());
- }
- #ifdef __STL_FUNCTION_TMPL_PARTIAL_ORDER
- template <class T, class Alloc>
- inline void swap(slist<T, Alloc>& x, slist<T, Alloc>& y) {
- x.swap(y);
- }
- #endif /* __STL_FUNCTION_TMPL_PARTIAL_ORDER */
- template <class T, class Alloc>
- void slist<T, Alloc>::resize(size_type len, const T& x)
- {
- list_node_base* cur = &head;
- while (cur->next != 0 && len > 0) {
- --len;
- cur = cur->next;
- }
- if (cur->next)
- erase_after(cur, 0);
- else
- _insert_after_fill(cur, len, x);
- }
- template <class T, class Alloc>
- void slist<T,Alloc>::remove(const T& val)
- {
- list_node_base* cur = &head;
- while (cur && cur->next) {
- if (((list_node*) cur->next)->data == val)
- erase_after(cur);
- else
- cur = cur->next;
- }
- }
- template <class T, class Alloc>
- void slist<T,Alloc>::unique()
- {
- list_node_base* cur = head.next;
- if (cur) {
- while (cur->next) {
- if (((list_node*)cur)->data == ((list_node*)(cur->next))->data)
- erase_after(cur);
- else
- cur = cur->next;
- }
- }
- }
- template <class T, class Alloc>
- void slist<T,Alloc>::merge(slist<T,Alloc>& L)
- {
- list_node_base* n1 = &head;
- while (n1->next && L.head.next) {
- if (((list_node*) L.head.next)->data < ((list_node*) n1->next)->data)
- __slist_splice_after(n1, &L.head, L.head.next);
- n1 = n1->next;
- }
- if (L.head.next) {
- n1->next = L.head.next;
- L.head.next = 0;
- }
- }
- template <class T, class Alloc>
- void slist<T,Alloc>::sort()
- {
- if (head.next && head.next->next) {
- slist carry;
- slist counter[64];
- int fill = 0;
- while (!empty()) {
- __slist_splice_after(&carry.head, &head, head.next);
- int i = 0;
- while (i < fill && !counter[i].empty()) {
- counter[i].merge(carry);
- carry.swap(counter[i]);
- ++i;
- }
- carry.swap(counter[i]);
- if (i == fill)
- ++fill;
- }
- for (int i = 1; i < fill; ++i)
- counter[i].merge(counter[i-1]);
- this->swap(counter[fill-1]);
- }
- }
- #ifdef __STL_MEMBER_TEMPLATES
- template <class T, class Alloc>
- template <class Predicate> void slist<T,Alloc>::remove_if(Predicate pred)
- {
- list_node_base* cur = &head;
- while (cur->next) {
- if (pred(((list_node*) cur->next)->data))
- erase_after(cur);
- else
- cur = cur->next;
- }
- }
- template <class T, class Alloc> template <class BinaryPredicate>
- void slist<T,Alloc>::unique(BinaryPredicate pred)
- {
- list_node* cur = (list_node*) head.next;
- if (cur) {
- while (cur->next) {
- if (pred(((list_node*)cur)->data, ((list_node*)(cur->next))->data))
- erase_after(cur);
- else
- cur = (list_node*) cur->next;
- }
- }
- }
- template <class T, class Alloc> template <class StrictWeakOrdering>
- void slist<T,Alloc>::merge(slist<T,Alloc>& L, StrictWeakOrdering comp)
- {
- list_node_base* n1 = &head;
- while (n1->next && L.head.next) {
- if (comp(((list_node*) L.head.next)->data,
- ((list_node*) n1->next)->data))
- __slist_splice_after(n1, &L.head, L.head.next);
- n1 = n1->next;
- }
- if (L.head.next) {
- n1->next = L.head.next;
- L.head.next = 0;
- }
- }
- template <class T, class Alloc> template <class StrictWeakOrdering>
- void slist<T,Alloc>::sort(StrictWeakOrdering comp)
- {
- if (head.next && head.next->next) {
- slist carry;
- slist counter[64];
- int fill = 0;
- while (!empty()) {
- __slist_splice_after(&carry.head, &head, head.next);
- int i = 0;
- while (i < fill && !counter[i].empty()) {
- counter[i].merge(carry, comp);
- carry.swap(counter[i]);
- ++i;
- }
- carry.swap(counter[i]);
- if (i == fill)
- ++fill;
- }
- for (int i = 1; i < fill; ++i)
- counter[i].merge(counter[i-1], comp);
- this->swap(counter[fill-1]);
- }
- }
- #endif /* __STL_MEMBER_TEMPLATES */
- #if defined(__sgi) && !defined(__GNUC__) && (_MIPS_SIM != _MIPS_SIM_ABI32)
- #pragma reset woff 1174
- #endif
- __STL_END_NAMESPACE
- #endif /* __SGI_STL_INTERNAL_SLIST_H */
- // Local Variables:
- // mode:C++
- // End: