comparison DEPENDENCIES/generic/include/boost/archive/iterators/istream_iterator.hpp @ 16:2665513ce2d3

Add boost headers

+#ifndef BOOST_ARCHIVE_ITERATORS_ISTREAM_ITERATOR_HPP
+#define BOOST_ARCHIVE_ITERATORS_ISTREAM_ITERATOR_HPP
+
+// MS compatible compilers support #pragma once
+#if defined(_MSC_VER) && (_MSC_VER >= 1020)
+# pragma once
+#endif
+
+/////////1/////////2/////////3/////////4/////////5/////////6/////////7/////////8
+// istream_iterator.hpp
+
+// (C) Copyright 2002 Robert Ramey - http://www.rrsd.com . 
+// Use, modification and distribution is subject to the Boost Software
+// License, Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at
+// http://www.boost.org/LICENSE_1_0.txt)
+
+//  See http://www.boost.org for updates, documentation, and revision history.
+
+// note: this is a custom version of the standard istream_iterator.
+// This is necessary as the standard version doesn't work as expected
+// for wchar_t based streams on systems for which wchar_t not a true
+// type but rather a synonym for some integer type.
+
+#include <cstddef> // NULL
+#include <istream>
+#include <boost/iterator/iterator_facade.hpp>
+
+namespace boost { 
+namespace archive {
+namespace iterators {
+
+// given a type, make an input iterator based on a pointer to that type
+template<class Elem = char>
+class istream_iterator :  
+    public boost::iterator_facade<
+        istream_iterator<Elem>,
+        Elem,
+        std::input_iterator_tag,
+        Elem
+    >
+{
+    friend class boost::iterator_core_access;
+    typedef istream_iterator this_t ;
+    typedef BOOST_DEDUCED_TYPENAME boost::iterator_facade<
+        istream_iterator<Elem>,
+        Elem,
+        std::input_iterator_tag,
+        Elem
+    > super_t;
+    typedef BOOST_DEDUCED_TYPENAME std::basic_istream<Elem> istream_type;
+ 
+    bool equal(const this_t & rhs) const {
+        // note: only  works for comparison against end of stream
+        return m_istream == rhs.m_istream;
+    }
+
+/*
+    //Access the value referred to 
+    Elem dereference() const {
+        return m_current_value;
+    }
+
+    void increment(){
+        if(NULL != m_istream){
+            m_current_value = static_cast<Elem>(m_istream->get());
+            if(! m_istream->good()){
+                const_cast<this_t *>(this)->m_istream = NULL;
+            }
+        }
+    }
+*/
+    //Access the value referred to 
+    Elem dereference() const {
+        return m_istream->peek();
+    }
+
+    void increment(){
+        if(NULL != m_istream){
+            m_istream->ignore(1);
+        }
+    }
+
+    istream_type *m_istream;
+    Elem m_current_value;
+public:
+    istream_iterator(istream_type & is) :
+        m_istream(& is)
+    {
+        //increment();
+    }
+
+    istream_iterator() :
+        m_istream(NULL)
+    {}
+
+    istream_iterator(const istream_iterator<Elem> & rhs) :
+        m_istream(rhs.m_istream),
+        m_current_value(rhs.m_current_value)
+    {}
+
+};
+
+} // namespace iterators
+} // namespace archive
+} // namespace boost
+
+#endif // BOOST_ARCHIVE_ITERATORS_ISTREAM_ITERATOR_HPP