1 files changed, 92 insertions, 0 deletions
diff --git a/src/boost/libs/spirit/classic/example/fundamental/sum.cpp b/src/boost/libs/spirit/classic/example/fundamental/sum.cpp
new file mode 100644
index 00000000..d6dd9c9d
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+++ b/src/boost/libs/spirit/classic/example/fundamental/sum.cpp
@@ -0,0 +1,92 @@
+/*=============================================================================
+    Copyright (c) 2002-2003 Joel de Guzman
+    http://spirit.sourceforge.net/
+
+    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)
+=============================================================================*/
+///////////////////////////////////////////////////////////////////////////////
+//
+//  A parser for summing a list of numbers. Demonstrating phoenix
+//  This is discussed in the "Phoenix" chapter in the Spirit User's Guide.
+//
+//  [ JDG 6/28/2002 ]
+//
+///////////////////////////////////////////////////////////////////////////////
+#include <boost/spirit/include/classic_core.hpp>
+#include <boost/spirit/include/phoenix1_primitives.hpp>
+#include <boost/spirit/include/phoenix1_operators.hpp>
+#include <iostream>
+#include <string>
+
+///////////////////////////////////////////////////////////////////////////////
+using namespace std;
+using namespace BOOST_SPIRIT_CLASSIC_NS;
+using namespace phoenix;
+
+///////////////////////////////////////////////////////////////////////////////
+//
+//  Our adder
+//
+///////////////////////////////////////////////////////////////////////////////
+template <typename IteratorT>
+bool adder(IteratorT first, IteratorT last, double& n)
+{
+    return parse(first, last,
+
+        //  Begin grammar
+        (
+            real_p[var(n) = arg1] >> *(',' >> real_p[var(n) += arg1])
+        )
+        ,
+        //  End grammar
+
+        space_p).full;
+}
+
+////////////////////////////////////////////////////////////////////////////
+//
+//  Main program
+//
+////////////////////////////////////////////////////////////////////////////
+int
+main()
+{
+    cout << "/////////////////////////////////////////////////////////\n\n";
+    cout << "\t\tA parser for summing a list of numbers...\n\n";
+    cout << "/////////////////////////////////////////////////////////\n\n";
+
+    cout << "Give me a comma separated list of numbers.\n";
+    cout << "The numbers are added using Phoenix.\n";
+    cout << "Type [q or Q] to quit\n\n";
+
+    string str;
+    while (getline(cin, str))
+    {
+        if (str.empty() || str[0] == 'q' || str[0] == 'Q')
+            break;
+
+        double n;
+        if (adder(str.begin(), str.end(), n))
+        {
+            cout << "-------------------------\n";
+            cout << "Parsing succeeded\n";
+            cout << str << " Parses OK: " << endl;
+
+            cout << "sum = " << n;
+            cout << "\n-------------------------\n";
+        }
+        else
+        {
+            cout << "-------------------------\n";
+            cout << "Parsing failed\n";
+            cout << "-------------------------\n";
+        }
+    }
+
+    cout << "Bye... :-) \n\n";
+    return 0;
+}
+
+