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extern/stdcxx/4.2.1/include/rw/_iterator.h

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+/***************************************************************************
+ *
+ * _iterator.h - Iterator declarations for the Standard Library
+ *
+ * This is an internal header file used to implement the C++ Standard
+ * Library. It should never be #included directly by a program.
+ *
+ * $Id: _iterator.h 590052 2007-10-30 12:44:14Z faridz $
+ *
+ ***************************************************************************
+ *
+ * Copyright (c) 1994
+ * Hewlett-Packard Company
+ *
+ * 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.  Hewlett-Packard Company makes no
+ * representations about the suitability of this software for any
+ * purpose.  It is provided "as is" without express or implied warranty.
+ *
+ ***************************************************************************
+ *
+ * Licensed to the Apache Software  Foundation (ASF) under one or more
+ * contributor  license agreements.  See  the NOTICE  file distributed
+ * with  this  work  for  additional information  regarding  copyright
+ * ownership.   The ASF  licenses this  file to  you under  the Apache
+ * License, Version  2.0 (the  "License"); you may  not use  this file
+ * except in  compliance with the License.   You may obtain  a copy of
+ * the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the  License is distributed on an  "AS IS" BASIS,
+ * WITHOUT  WARRANTIES OR CONDITIONS  OF ANY  KIND, either  express or
+ * implied.   See  the License  for  the  specific language  governing
+ * permissions and limitations under the License.
+ *
+ * Copyright 1994-2006 Rogue Wave Software.
+ * 
+ **************************************************************************/
+
+#ifndef _RWSTD_RW_ITERATOR_H_INCLUDED
+#define _RWSTD_RW_ITERATOR_H_INCLUDED
+
+#ifndef _RWSTD_RW_ITERBASE_H_INCLUDED
+#  include <rw/_iterbase.h>
+#endif   // _RWSTD_RW_ITERBASE_H_INCLUDED
+
+
+_RWSTD_NAMESPACE (std) { 
+
+
+// Reverse iterator.     
+
+//
+//  Macros for reverse iterators to accomodate non-standard compilers
+//
+#ifndef _RWSTD_NO_CLASS_PARTIAL_SPEC 
+#  define _RWSTD_ITER_TEMPLATE template <class _Iterator>
+#  define _RWSTD_ITER_ID(i)    i <_Iterator>
+#  define _RWSTD_ITER_DIFF_TYPE(i, ignore)                             \
+          _TYPENAME iterator_traits<_Iterator>::difference_type
+#else
+#  define _RWSTD_ITER_TEMPLATE                                         \
+          template <class _Iterator, class _Category, class _TypeT,    \
+                    class _Reference, class _Pointer, class _Distance>
+#  define _RWSTD_ITER_ID(i)                                            \
+          i <_Iterator, _Category, _TypeT, _Reference, _Pointer, _Distance>
+#  define _RWSTD_ITER_DIFF_TYPE(ignore, distance) distance          
+#endif   // _RWSTD_NO_CLASS_PARTIAL_SPEC 
+
+
+#ifndef _RWSTD_NO_CLASS_PARTIAL_SPEC 
+
+template <class _Iterator>
+class reverse_iterator
+    : public iterator<_TYPENAME iterator_traits<_Iterator>::iterator_category, 
+                      _TYPENAME iterator_traits<_Iterator>::value_type, 
+                      _TYPENAME iterator_traits<_Iterator>::difference_type,
+                      _TYPENAME iterator_traits<_Iterator>::pointer, 
+                      _TYPENAME iterator_traits<_Iterator>::reference>
+{
+    typedef iterator_traits<_Iterator>             traits_type;
+public:
+    typedef _TYPENAME traits_type::difference_type difference_type;
+    typedef _TYPENAME traits_type::value_type      value_type;
+    typedef _TYPENAME traits_type::pointer         pointer;
+    typedef _TYPENAME traits_type::reference       reference;
+
+#else   // if defined (_RWSTD_NO_CLASS_PARTIAL_SPEC)
+
+template <class _Iterator, class _Category, class _TypeT,
+          class _Reference = _TypeT&, 
+          class _Pointer = _TypeT*,
+          class _Distance = _RWSTD_PTRDIFF_T>
+class reverse_iterator
+    : public iterator<_Category, _TypeT, _Distance, _Pointer, _Reference>
+
+{
+public:
+    typedef _Distance  difference_type;
+    typedef _TypeT     value_type;
+    typedef _Reference reference;
+    typedef _Pointer   pointer;
+
+#endif   // _RWSTD_NO_CLASS_PARTIAL_SPEC
+
+    typedef _Iterator iterator_type;
+
+    reverse_iterator () { }
+
+    // 24.4.1.3.1, p1
+    _EXPLICIT reverse_iterator (iterator_type __rhs) : current (__rhs) { }
+ 
+
+#ifndef _RWSTD_NO_MEMBER_TEMPLATES
+#  ifndef _RWSTD_NO_CLASS_PARTIAL_SPEC 
+
+    // 24.4.1.3.1, p2
+    template <class _TypeU>
+    reverse_iterator (const reverse_iterator<_TypeU>& __rhs)
+        : current (__rhs.base ()) { }
+
+#  else   // if defined (_RWSTD_NO_CLASS_PARTIAL_SPEC)
+
+    // 24.4.1.3.1, p2
+    template <class _Iterator2, class _Category2, class _TypeU,
+              class _Reference2, class _Pointer2, class _Distance2>
+    reverse_iterator (const reverse_iterator<_Iterator2, _Category2, _TypeU,
+                      _Reference2, _Pointer2, _Distance2>& __rhs)
+        : current (__rhs.base ()) { }
+
+#  endif   // _RWSTD_NO_CLASS_PARTIAL_SPEC 
+#endif   // _RWSTD_NO_MEMBER_TEMPLATES
+
+
+    // 24.4.1.3.2, p1
+    iterator_type base () const {
+        return current;
+    }
+
+    // 24.4.1.3.3, p1
+    reference operator* () const {
+        iterator_type __tmp (base ());
+        return *--__tmp;
+    }
+
+    // 24.4.1.3.4, p1
+    _RWSTD_OPERATOR_ARROW (pointer operator->() const);
+
+    // 24.4.1.3.5, p1
+    reverse_iterator& operator++ () {
+        return --current, *this;
+    }
+
+    // 24.4.1.3.5, p3
+    reverse_iterator operator++ (int) {
+        reverse_iterator __tmp (*this);
+        return ++*this, __tmp;
+    }
+
+    // 24.4.1.3.6, p1
+    reverse_iterator& operator-- () {
+        return ++current, *this;
+    }
+
+    // 24.4.1.3.6, p3
+    reverse_iterator operator-- (int) {
+        reverse_iterator __tmp (*this);
+        return --*this, __tmp;
+    }
+
+    // 24.4.1.3.8, p1
+    reverse_iterator& operator+= (difference_type __n) {
+        return current -= __n, *this;
+    }
+
+    // 24.4.1.3.10, p1
+    reverse_iterator& operator-= (difference_type __n) {
+        return *this += -__n;
+    }
+
+    // 24.4.1.3.7, p1
+    reverse_iterator operator+ (difference_type __n) const {
+        return reverse_iterator (*this) += __n;
+    }
+
+    // 24.4.1.3.9, p1
+    reverse_iterator operator- (difference_type __n) const {
+        return reverse_iterator (*this) -= __n;
+    }
+
+    // 24.4.1.3.11, p1
+    reference operator[] (difference_type __n) const {
+        return *(*this + __n);
+    }
+
+protected:
+
+    iterator_type current;
+};
+
+
+// 24.4.1.3.12
+_RWSTD_ITER_TEMPLATE
+inline bool operator== (const _RWSTD_ITER_ID (reverse_iterator)& __x,
+                        const _RWSTD_ITER_ID (reverse_iterator)& __y)
+{
+    return __x.base () == __y.base ();
+}
+
+
+// 24.4.1.3.13
+_RWSTD_ITER_TEMPLATE
+inline bool operator< (const _RWSTD_ITER_ID (reverse_iterator)& __x,
+                       const _RWSTD_ITER_ID (reverse_iterator)& __y)
+{
+    return __y.base() < __x.base();
+}
+
+
+// 24.4.1.3.14
+_RWSTD_ITER_TEMPLATE
+inline bool operator!= (const _RWSTD_ITER_ID (reverse_iterator)& __x, 
+                        const _RWSTD_ITER_ID (reverse_iterator)& __y)
+{
+    return !(__x == __y);
+}
+
+
+// 24.4.1.3.15
+_RWSTD_ITER_TEMPLATE
+inline bool operator> (const _RWSTD_ITER_ID (reverse_iterator)& __x, 
+                       const _RWSTD_ITER_ID (reverse_iterator)& __y)
+{
+    return __y < __x;
+}
+
+
+// 24.4.1.3.16
+_RWSTD_ITER_TEMPLATE
+inline bool operator>= (const _RWSTD_ITER_ID (reverse_iterator)& __x, 
+                        const _RWSTD_ITER_ID (reverse_iterator)& __y)
+{
+    return !(__x < __y);
+}
+
+
+// 24.4.1.3.17
+_RWSTD_ITER_TEMPLATE
+inline bool operator<= (const _RWSTD_ITER_ID (reverse_iterator)& __x,
+                        const _RWSTD_ITER_ID (reverse_iterator)& __y)
+{
+    return !(__y < __x);
+}
+
+
+// 24.4.1.3.18
+_RWSTD_ITER_TEMPLATE
+inline _RWSTD_ITER_DIFF_TYPE (_Iterator, _Distance)
+operator- (const _RWSTD_ITER_ID (reverse_iterator)& __x, 
+           const _RWSTD_ITER_ID (reverse_iterator)& __y)
+{
+    return __y.base () - __x.base ();
+}
+
+
+// 24.4.1.3.19
+_RWSTD_ITER_TEMPLATE
+inline _RWSTD_ITER_ID (reverse_iterator)
+operator+ (_RWSTD_ITER_DIFF_TYPE (_Iterator, _Distance) __n, 
+           const _RWSTD_ITER_ID (reverse_iterator)&     __x)
+{
+    return __x + __n;
+}
+
+#undef _RWSTD_ITER_DIFF_TYPE
+
+#ifdef _RWSTD_NO_CLASS_PARTIAL_SPEC
+
+}   // namespace std
+
+_RWSTD_NAMESPACE (__rw) { 
+
+// Reverse bidirectional iterator.       
+// This is needed to get around non-standard compilers that insist
+// on instantiating all members of a class whether they're used 
+// or not.
+
+template <class _Iterator, class _Category, class _TypeT, 
+          class _Reference = _TypeT&, 
+          class _Pointer = _TypeT*, 
+          class _Distance = _RWSTD_PTRDIFF_T>
+class __reverse_bi_iterator
+    : public _STD::iterator<_Category, _TypeT, _Distance, _Pointer, _Reference>
+{
+public:
+    typedef _Distance  difference_type;
+    typedef _TypeT     value_type;
+    typedef _Reference reference;
+    typedef _Pointer   pointer;
+    typedef _Iterator  iterator_type;
+
+    __reverse_bi_iterator () { }
+
+    _EXPLICIT __reverse_bi_iterator (const iterator_type &__rhs) 
+        : current (__rhs) { }
+
+
+#ifndef _RWSTD_NO_MEMBER_TEMPLATES
+#  ifndef _RWSTD_NO_CLASS_PARTIAL_SPEC 
+
+      template <class _TypeU>
+      __reverse_bi_iterator (const __reverse_bi_iterator<_TypeU>& __rhs)
+          : current (__rhs.base ()) { }
+
+#  else   // if defined (_RWSTD_NO_CLASS_PARTIAL_SPEC )
+
+      template <class _Iterator2, class _Category2, class _TypeU,
+                class _Reference2, class _Pointer2, class _Distance2>
+      __reverse_bi_iterator (const __reverse_bi_iterator<_Iterator2,
+                                                         _Category2,
+                                                         _TypeU,
+                                                         _Reference2,
+                                                         _Pointer2,
+                                                         _Distance2>& __rhs)
+          : current (__rhs.base ()) { }
+#  endif
+#endif // _RWSTD_NO_MEMBER_TEMPLATES
+
+
+    iterator_type base () const {
+        return current;
+    }
+
+    reference operator* () const {
+        iterator_type __tmp = base ();
+        return *--__tmp;
+    }
+
+    _RWSTD_OPERATOR_ARROW (pointer operator->() const);
+
+    __reverse_bi_iterator& operator++ () {
+        return --current, *this;
+    }
+
+    __reverse_bi_iterator  operator++ (int) {
+        __reverse_bi_iterator __tmp (*this);
+        ++*this;
+        return __tmp;
+    }
+
+    __reverse_bi_iterator& operator-- () {
+        return ++current, *this;
+    }
+
+    __reverse_bi_iterator operator-- (int) {
+        __reverse_bi_iterator __tmp (*this);
+        --*this;
+        return __tmp;
+    }
+
+protected:
+
+    iterator_type current;
+};
+
+
+_RWSTD_ITER_TEMPLATE
+inline bool operator== (const _RWSTD_ITER_ID (__reverse_bi_iterator)& __x, 
+                        const _RWSTD_ITER_ID (__reverse_bi_iterator)& __y)
+{
+    return __x.base () == __y.base ();
+}
+
+
+_RWSTD_ITER_TEMPLATE
+inline bool operator!= (const _RWSTD_ITER_ID (__reverse_bi_iterator)& __x,
+                        const _RWSTD_ITER_ID (__reverse_bi_iterator)& __y)
+{
+    return !(__x == __y);
+}
+
+#undef _RWSTD_ITER_TEMPLATE
+#undef _RWSTD_ITER_ID
+
+}   // namespace __rw
+
+_RWSTD_NAMESPACE (std) { 
+
+#endif   // _RWSTD_NO_CLASS_PARTIAL_SPEC
+
+
+#ifndef _RWSTD_NO_CLASS_PARTIAL_SPEC
+#  define _RWSTD_INSERT_ITERATOR_BASE(ignore)       \
+          iterator<output_iterator_tag, void, void, void, void>
+#else
+   // necessary to allow __iterator_category, __value_type, etc. to work
+#  define _RWSTD_INSERT_ITERATOR_BASE(cont)         \
+          iterator<output_iterator_tag,             \
+                   _TYPENAME cont::value_type,      \
+                   _TYPENAME cont::difference_type, \
+                   _TYPENAME cont::pointer,         \
+                   _TYPENAME cont::reference>
+#endif   // _RWSTD_NO_CLASS_PARTIAL_SPEC
+
+
+template <class _Container>
+class back_insert_iterator: public _RWSTD_INSERT_ITERATOR_BASE (_Container)
+{
+public:
+    typedef _Container container_type;
+
+    _EXPLICIT back_insert_iterator (container_type& __rhs)
+        : container (&__rhs) { }
+
+    back_insert_iterator&
+    operator= (_TYPENAME container_type::const_reference __x) {
+        return container->push_back (__x), *this;
+    }
+
+    back_insert_iterator& operator*  () {
+        return *this;
+    }
+
+    back_insert_iterator& operator++ () {
+        return *this;
+    }
+
+    back_insert_iterator operator++ (int) {
+        return *this;
+    }
+
+protected:
+
+    container_type* container;
+};
+
+
+template <class _Container>
+inline back_insert_iterator<_Container> back_inserter (_Container& __x)
+{
+    return back_insert_iterator<_Container>(__x);
+}
+
+
+template <class _Container>
+class front_insert_iterator: public _RWSTD_INSERT_ITERATOR_BASE (_Container)
+{
+public:
+    typedef _Container container_type;
+
+    _EXPLICIT front_insert_iterator (container_type& __rhs)
+        : container (&__rhs) { }
+
+    front_insert_iterator&
+    operator= (_TYPENAME container_type::const_reference __x) { 
+        return container->push_front (__x), *this;
+    }
+
+    front_insert_iterator& operator* () {
+        return *this;
+    }
+
+    front_insert_iterator& operator++ () {
+        return *this;
+    }
+
+    front_insert_iterator operator++ (int) {
+        return *this;
+    }
+
+protected:
+
+    container_type* container;
+};
+
+
+template <class _Container>
+inline front_insert_iterator<_Container> front_inserter (_Container& __x)
+{
+    return front_insert_iterator<_Container>(__x);
+}
+
+
+template <class _Container>
+class insert_iterator: public _RWSTD_INSERT_ITERATOR_BASE (_Container)
+{
+public:
+    typedef _Container container_type;
+
+    insert_iterator (container_type                    &__x,
+                     _TYPENAME container_type::iterator __it)
+      : iter (__it), container (&__x) { }
+
+    insert_iterator&
+    operator= (_TYPENAME container_type::const_reference __x) { 
+        iter = container->insert (iter, __x);
+        return ++iter, *this;
+    }
+
+    insert_iterator& operator* () {
+        return *this;
+    }
+
+    insert_iterator& operator++ () {
+        return *this;
+    }
+
+    insert_iterator& operator++ (int) {
+        return *this;
+    }
+
+protected:
+
+    _TYPENAME container_type::iterator iter;
+    container_type*                    container;
+};
+
+
+template <class _Container, class _Iterator>
+inline insert_iterator<_Container> inserter (_Container& __x, _Iterator __it)
+{
+    typedef _TYPENAME _Container::iterator _Iter;
+
+    return insert_iterator<_Container> (__x, _Iter (__it));
+}
+
+
+}   // namespace std
+
+#endif   // _RWSTD_RW_ITERATOR_H_INCLUDED