| // Copyright (c) 2001-2010 Hartmut Kaiser |
| // Copyright (c) 2001-2010 Joel de Guzman |
| // |
| // 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_SEQUENCE_FEB_28_2007_0249PM) |
| #define SPIRIT_KARMA_SEQUENCE_FEB_28_2007_0249PM |
| |
| #if defined(_MSC_VER) |
| #pragma once |
| #endif |
| |
| #include <boost/spirit/home/support/unused.hpp> |
| #include <boost/config.hpp> |
| |
| namespace boost { namespace spirit { namespace karma { namespace detail |
| { |
| template <typename OutputIterator, typename Context, typename Delimiter> |
| struct fail_function |
| { |
| typedef Context context_type; |
| |
| fail_function(OutputIterator& sink_, Context& context_ |
| , Delimiter const& delim_) |
| : sink(sink_), ctx(context_), delim(delim_) |
| {} |
| |
| template <typename Component, typename Attribute> |
| bool operator()(Component const& component, Attribute const& attr) const |
| { |
| #if BOOST_WORKAROUND(BOOST_MSVC, BOOST_TESTED_AT(1600)) |
| component; // suppresses warning: C4100: 'component' : unreferenced formal parameter |
| #endif |
| // return true if any of the generators fail |
| return !component.generate(sink, ctx, delim, attr); |
| } |
| |
| template <typename Component> |
| bool operator()(Component const& component) const |
| { |
| #if BOOST_WORKAROUND(BOOST_MSVC, BOOST_TESTED_AT(1600)) |
| component; // suppresses warning: C4100: 'component' : unreferenced formal parameter |
| #endif |
| // return true if any of the generators fail |
| return !component.generate(sink, ctx, delim, unused); |
| } |
| |
| OutputIterator& sink; |
| Context& ctx; |
| Delimiter const& delim; |
| |
| private: |
| // silence MSVC warning C4512: assignment operator could not be generated |
| fail_function& operator= (fail_function const&); |
| }; |
| |
| }}}} |
| |
| #endif |