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examples: improve the output of the "variant" example

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* examples/variant.yy: Improve the printing of lists.
This commit is contained in:
Akim Demaille
2013-09-19 15:20:22 +02:00
parent 66b03e134f
commit b51cf830a6
1 changed files with 11 additions and 5 deletions
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16
examples/variant.yy
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@@ -16,7 +16,7 @@
*/
%debug
%skeleton "lalr1.cc"
%language "c++"
%defines
%define api.token.constructor
%define api.value.type variant
@@ -48,11 +48,17 @@ typedef std::list<std::string> strings_type;
namespace std
{
std::ostream&
operator<< (std::ostream& o, const strings_type& s)
operator<< (std::ostream& o, const strings_type& ss)
{
std::copy (s.begin (), s.end (),
std::ostream_iterator<strings_type::value_type> (o, "\n"));
return o;
o << "(" << &ss << ") {";
const char *sep = "";
for (strings_type::const_iterator i = ss.begin(), end = ss.end();
i != end; ++i)
{
o << sep << *i;
sep = ", ";
}
return o << "}";
}
}