[Boost-commit] svn:boost r60340 - trunk/libs/spirit/example/qi/scheme

Subject: [Boost-commit] svn:boost r60340 - trunk/libs/spirit/example/qi/scheme
From: joel_at_[hidden]
Date: 2010-03-08 04:31:03

Author: djowel
Date: 2010-03-08 04:31:02 EST (Mon, 08 Mar 2010)
New Revision: 60340
URL: http://svn.boost.org/trac/boost/changeset/60340

Log:
changed symbol prefix from ';' to '\0' to avoid ambiguity
Text files modified: 
   trunk/libs/spirit/example/qi/scheme/sexpr.hpp        |     3 ++-                                     
   trunk/libs/spirit/example/qi/scheme/simple_print.hpp |     2 +-                                      
   2 files changed, 3 insertions(+), 2 deletions(-)

Modified: trunk/libs/spirit/example/qi/scheme/sexpr.hpp
==============================================================================
--- trunk/libs/spirit/example/qi/scheme/sexpr.hpp	(original)
+++ trunk/libs/spirit/example/qi/scheme/sexpr.hpp	2010-03-08 04:31:02 EST (Mon, 08 Mar 2010)
@@ -88,7 +88,8 @@
             void operator()(std::string& utf8, uchar code_point) const
             {
                 if (utf8.size() == 0)
-                    utf8 += ';';    // mark a symbol with prefix ';'
+                    utf8 += '\0';   //  mark a symbol with prefix 0
+                                    //  (a 0 byte at the beginningsignifies a symbol)
                 push_utf8()(utf8, code_point);
             }
         };

Modified: trunk/libs/spirit/example/qi/scheme/simple_print.hpp
==============================================================================
--- trunk/libs/spirit/example/qi/scheme/simple_print.hpp	(original)
+++ trunk/libs/spirit/example/qi/scheme/simple_print.hpp	2010-03-08 04:31:02 EST (Mon, 08 Mar 2010)
@@ -53,7 +53,7 @@
         {
             typedef typename Range::const_iterator iterator;
             iterator i = range.begin();
-            bool const is_symbol = *i == ';';
+            bool const is_symbol = *i == '\0';  // a 0 byte at the beginning signifies a symbol
             if (!is_symbol)
                 print('"');
             else