Change docs to use new performance test code,

upgrade docs to quickbook 1.7.

performance/xpressive.cpp

@@ -0,0 +1,74 @@
+///////////////////////////////////////////////////////////////
+//  Copyright 2015 John Maddock. 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_
+//
+
+#include <boost/config.hpp>
+
+#include "performance.hpp"
+#include <boost/xpressive/xpressive.hpp>
+
+using namespace boost::xpressive;
+
+struct xpressive_regex : public abstract_regex
+{
+private:
+   cregex e;
+   cmatch what;
+public:
+   virtual bool set_expression(const char* pe, bool isperl)
+   {
+      if(!isperl)
+         return false;
+      try
+      {
+         e = cregex::compile(pe, regex_constants::ECMAScript);
+      }
+      catch(const std::exception&)
+      {
+         return false;
+      }
+      return true;
+   }
+   virtual bool match_test(const char* text);
+   virtual unsigned find_all(const char* text);
+   virtual std::string name();
+
+   struct initializer
+   {
+      initializer()
+      {
+         xpressive_regex::register_instance(boost::shared_ptr<abstract_regex>(new xpressive_regex));
+      }
+      void do_nothing()const {}
+   };
+   static const initializer init;
+};
+
+const xpressive_regex::initializer xpressive_regex::init;
+
+
+bool xpressive_regex::match_test(const char * text)
+{
+   return regex_match(text, what, e);
+}
+
+unsigned xpressive_regex::find_all(const char * text)
+{
+   cregex_token_iterator i(text, text + std::strlen(text), e), j;
+   unsigned count = 0;
+   while(i != j)
+   {
+      ++i;
+      ++count;
+   }
+   return count;
+}
+
+std::string xpressive_regex::name()
+{
+   init.do_nothing();
+   return "boost::xpressive::cregex";
+}
+