Subject: [Boost-commit] svn:boost r55386 - in trunk/boost/spirit: home/karma home/karma/directive home/support include
From: hartmut.kaiser_at_[hidden]
Date: 2009-08-03 11:47:27
Author: hkaiser
Date: 2009-08-03 11:47:26 EDT (Mon, 03 Aug 2009)
New Revision: 55386
URL: http://svn.boost.org/trac/boost/changeset/55386
Log:
Spirit: added karma directive buffer[]
Added:
trunk/boost/spirit/home/karma/directive/buffer.hpp (contents, props changed)
trunk/boost/spirit/include/karma_buffer.hpp (contents, props changed)
Text files modified:
trunk/boost/spirit/home/karma/directive.hpp | 6 ++++++
trunk/boost/spirit/home/support/common_terminals.hpp | 1 +
2 files changed, 7 insertions(+), 0 deletions(-)
Modified: trunk/boost/spirit/home/karma/directive.hpp
==============================================================================
--- trunk/boost/spirit/home/karma/directive.hpp (original)
+++ trunk/boost/spirit/home/karma/directive.hpp 2009-08-03 11:47:26 EDT (Mon, 03 Aug 2009)
@@ -49,4 +49,10 @@
///////////////////////////////////////////////////////////////////////////////
#include <boost/spirit/home/karma/directive/omit.hpp>
+///////////////////////////////////////////////////////////////////////////////
+// buffer directive
+// buffer[...]
+///////////////////////////////////////////////////////////////////////////////
+#include <boost/spirit/home/karma/directive/buffer.hpp>
+
#endif
Added: trunk/boost/spirit/home/karma/directive/buffer.hpp
==============================================================================
--- (empty file)
+++ trunk/boost/spirit/home/karma/directive/buffer.hpp 2009-08-03 11:47:26 EDT (Mon, 03 Aug 2009)
@@ -0,0 +1,104 @@
+// Copyright (c) 2001-2009 Hartmut Kaiser
+//
+// 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)
+
+#if !defined(SPIRIT_KARMA_BUFFER_AUG_03_2009_0949AM)
+#define SPIRIT_KARMA_BUFFER_AUG_03_2009_0949AM
+
+#if defined(_MSC_VER)
+#pragma once
+#endif
+
+#include <boost/spirit/home/karma/meta_compiler.hpp>
+#include <boost/spirit/home/karma/generator.hpp>
+#include <boost/spirit/home/karma/domain.hpp>
+#include <boost/spirit/home/support/unused.hpp>
+#include <boost/spirit/home/support/info.hpp>
+#include <boost/spirit/home/support/common_terminals.hpp>
+
+namespace boost { namespace spirit
+{
+ ///////////////////////////////////////////////////////////////////////////
+ // Enablers
+ ///////////////////////////////////////////////////////////////////////////
+ template <>
+ struct use_directive<karma::domain, tag::buffer> // enables buffer
+ : mpl::true_ {};
+
+}}
+
+namespace boost { namespace spirit { namespace karma
+{
+ using spirit::buffer;
+ using spirit::buffer_type;
+
+ ///////////////////////////////////////////////////////////////////////////
+ // omit_directive consumes the attribute of subject generator without
+ // generating anything
+ ///////////////////////////////////////////////////////////////////////////
+ template <typename Subject>
+ struct buffer_directive : unary_generator<buffer_directive<Subject> >
+ {
+ typedef Subject subject_type;
+ typedef mpl::int_<
+ subject_type::properties::value |
+ generator_properties::countingbuffer
+ > properties;
+
+ buffer_directive(Subject const& subject)
+ : subject(subject) {}
+
+ template <typename Context, typename Iterator>
+ struct attribute
+ {
+ typedef typename
+ traits::attribute_of<subject_type, Context>::type
+ type;
+ };
+
+ template <typename OutputIterator, typename Context, typename Delimiter
+ , typename Attribute>
+ bool generate(OutputIterator& sink, Context& ctx, Delimiter const& d
+ , Attribute const& attr) const
+ {
+ // wrap the given output iterator avoid output as long as embedded
+ // generator (subject) fails
+ detail::enable_buffering<OutputIterator> buffering(sink);
+ bool r = false;
+ {
+ detail::disable_counting<OutputIterator> nocounting(sink);
+ r = subject.generate(sink, ctx, d, attr);
+ }
+ if (r)
+ buffering.buffer_copy();
+
+ return detail::sink_is_good(sink);
+ }
+
+ template <typename Context>
+ info what(Context& context) const
+ {
+ return info("buffer", subject.what(context));
+ }
+
+ Subject subject;
+ };
+
+ ///////////////////////////////////////////////////////////////////////////
+ // Generator generators: make_xxx function (objects)
+ ///////////////////////////////////////////////////////////////////////////
+ template <typename Subject, typename Modifiers>
+ struct make_directive<tag::buffer, Subject, Modifiers>
+ {
+ typedef buffer_directive<Subject> result_type;
+ result_type operator()(unused_type, Subject const& subject
+ , unused_type) const
+ {
+ return result_type(subject);
+ }
+ };
+
+}}}
+
+#endif
Modified: trunk/boost/spirit/home/support/common_terminals.hpp
==============================================================================
--- trunk/boost/spirit/home/support/common_terminals.hpp (original)
+++ trunk/boost/spirit/home/support/common_terminals.hpp 2009-08-03 11:47:26 EDT (Mon, 03 Aug 2009)
@@ -30,6 +30,7 @@
( inf )
( eol )
( eoi )
+ ( buffer )
)
// Here we are reusing proto::lit
Added: trunk/boost/spirit/include/karma_buffer.hpp
==============================================================================
--- (empty file)
+++ trunk/boost/spirit/include/karma_buffer.hpp 2009-08-03 11:47:26 EDT (Mon, 03 Aug 2009)
@@ -0,0 +1,18 @@
+/*=============================================================================
+ Copyright (c) 2001-2009 Joel de Guzman
+ Copyright (c) 2001-2009 Hartmut Kaiser
+ http://spirit.sourceforge.net/
+
+ 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)
+=============================================================================*/
+#ifndef BOOST_SPIRIT_INCLUDE_KARMA_BUFFER
+#define BOOST_SPIRIT_INCLUDE_KARMA_BUFFER
+
+#if defined(_MSC_VER)
+#pragma once
+#endif
+
+#include <boost/spirit/home/karma/directive/buffer.hpp>
+
+#endif