[Boost-commit] svn:boost r59496 - in trunk/libs/spirit/test: . support

Subject: [Boost-commit] svn:boost r59496 - in trunk/libs/spirit/test: . support
From: hartmut.kaiser_at_[hidden]
Date: 2010-02-04 19:45:18

Author: hkaiser
Date: 2010-02-04 19:45:18 EST (Thu, 04 Feb 2010)
New Revision: 59496
URL: http://svn.boost.org/trac/boost/changeset/59496

Log:
Spirit: added another testcase for multi_pass
Added:
   trunk/libs/spirit/test/support/multi_pass_regression002.cpp   (contents, props changed)
Text files modified: 
   trunk/libs/spirit/test/Jamfile |     1 +                                       
   1 files changed, 1 insertions(+), 0 deletions(-)

Modified: trunk/libs/spirit/test/Jamfile
==============================================================================
--- trunk/libs/spirit/test/Jamfile	(original)
+++ trunk/libs/spirit/test/Jamfile	2010-02-04 19:45:18 EST (Thu, 04 Feb 2010)
@@ -140,6 +140,7 @@
 
     # support tests
     [ compile support/multi_pass_regression001.cpp : : support_multi_pass_regression001 ]
+    [ compile support/multi_pass_regression002.cpp : : support_multi_pass_regression002 ]
     
     ;
 

Added: trunk/libs/spirit/test/support/multi_pass_regression002.cpp
==============================================================================
--- (empty file)
+++ trunk/libs/spirit/test/support/multi_pass_regression002.cpp	2010-02-04 19:45:18 EST (Thu, 04 Feb 2010)
@@ -0,0 +1,107 @@
+//  Copyright (c) 2010 Larry Evans
+// 
+//  Distributed under 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)
+
+//Purpose:
+//  Demonstrate error in non-classic multi_pass iterator compilation.
+//
+
+#include <boost/spirit/home/qi.hpp>
+#include <boost/spirit/home/support.hpp>
+#include <boost/spirit/home/support/multi_pass.hpp>
+#include <boost/spirit/home/support/iterators/detail/functor_input_policy.hpp>
+
+#include <fstream>
+
+//[iterate_a2m:
+// copied from:
+//    http://www.boost.org/doc/libs/1_41_0/libs/spirit/doc/html/spirit/support/multi_pass.html
+
+// define the function object
+template<typename CharT=char>
+class istreambuf_functor
+{
+public:
+        typedef 
+      std::istreambuf_iterator<CharT> 
+    buf_iterator_type;
+        typedef 
+      typename buf_iterator_type::int_type
+    result_type;
+        static 
+      result_type 
+    eof;
+
+    istreambuf_functor(void)
+      : current_chr(eof)
+    {}
+
+    istreambuf_functor(std::ifstream& input) 
+      : my_first(input)
+      , current_chr(eof)
+    {}
+
+    result_type operator()()
+    {
+        buf_iterator_type last;
+        if (my_first == last)
+        {
+            return eof;
+        }
+        current_chr=*my_first;
+        ++my_first;
+        return current_chr;
+    }
+
+private:
+    buf_iterator_type my_first;
+    result_type current_chr;
+};
+
+template<typename CharT>
+  typename istreambuf_functor<CharT>::result_type 
+  istreambuf_functor<CharT>::
+eof
+( istreambuf_functor<CharT>::buf_iterator_type::traits_type::eof()
+)
+;
+
+//]iterate_a2m:
+
+typedef istreambuf_functor<char> base_iterator_type;
+
+typedef
+  boost::spirit::multi_pass
+  < base_iterator_type
+  , boost::spirit::iterator_policies::default_policy
+    < boost::spirit::iterator_policies::first_owner
+    , boost::spirit::iterator_policies::no_check
+    , boost::spirit::iterator_policies::functor_input
+    , boost::spirit::iterator_policies::split_std_deque
+    >
+  > 
+chr_iterator_type;
+
+// ======================================================================       
+// Main                                                                         
+int main(int argc, char** argv) 
+{
+    std::ifstream in("multi_pass.txt");
+
+    unsigned num_toks=0;
+    unsigned const max_toks=10;
+
+    base_iterator_type base_first(in);
+    chr_iterator_type chr_first(base_first);
+    chr_iterator_type chr_last;
+    for
+      (
+      ; (chr_first != chr_last && ++num_toks < max_toks)
+      ; ++chr_first
+      )
+    {
+        std::cout<<":num_toks="<<num_toks<<":chr="<<*chr_first<<"\n";
+    }
+    return 0;
+}