Mercurial > hg > vamp-build-and-test
diff DEPENDENCIES/generic/include/boost/spirit/home/qi/detail/expect_function.hpp @ 16:2665513ce2d3
Add boost headers
author | Chris Cannam |
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date | Tue, 05 Aug 2014 11:11:38 +0100 |
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--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/DEPENDENCIES/generic/include/boost/spirit/home/qi/detail/expect_function.hpp Tue Aug 05 11:11:38 2014 +0100 @@ -0,0 +1,105 @@ +/*============================================================================= + Copyright (c) 2001-2011 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_EXPECT_FUNCTION_APR_29_2007_0558PM) +#define SPIRIT_EXPECT_FUNCTION_APR_29_2007_0558PM + +#if defined(_MSC_VER) +#pragma once +#endif + +#include <boost/spirit/home/support/unused.hpp> +#include <boost/spirit/home/support/multi_pass_wrapper.hpp> +#include <boost/throw_exception.hpp> + +namespace boost { namespace spirit { namespace qi { namespace detail +{ + template < + typename Iterator, typename Context + , typename Skipper, typename Exception> + struct expect_function + { + typedef Iterator iterator_type; + typedef Context context_type; + + expect_function( + Iterator& first_, Iterator const& last_ + , Context& context_, Skipper const& skipper_) + : first(first_) + , last(last_) + , context(context_) + , skipper(skipper_) + , is_first(true) + { + } + + template <typename Component, typename Attribute> + bool operator()(Component const& component, Attribute& attr) const + { + // if this is not the first component in the expect chain we + // need to flush any multi_pass iterator we might be acting on + if (!is_first) + spirit::traits::clear_queue(first); + + // if we are testing the first component in the sequence, + // return true if the parser fails, if this is not the first + // component, throw exception if the parser fails + if (!component.parse(first, last, context, skipper, attr)) + { + if (is_first) + { + is_first = false; + return true; // true means the match failed + } + boost::throw_exception(Exception(first, last, component.what(context))); +#if defined(BOOST_NO_EXCEPTIONS) + return true; // for systems not supporting exceptions +#endif + } + is_first = false; + return false; + } + + template <typename Component> + bool operator()(Component const& component) const + { + // if this is not the first component in the expect chain we + // need to flush any multi_pass iterator we might be acting on + if (!is_first) + spirit::traits::clear_queue(first); + + // if we are testing the first component in the sequence, + // return true if the parser fails, if this not the first + // component, throw exception if the parser fails + if (!component.parse(first, last, context, skipper, unused)) + { + if (is_first) + { + is_first = false; + return true; + } + boost::throw_exception(Exception(first, last, component.what(context))); +#if defined(BOOST_NO_EXCEPTIONS) + return false; // for systems not supporting exceptions +#endif + } + is_first = false; + return false; + } + + Iterator& first; + Iterator const& last; + Context& context; + Skipper const& skipper; + mutable bool is_first; + + private: + // silence MSVC warning C4512: assignment operator could not be generated + expect_function& operator= (expect_function const&); + }; +}}}} + +#endif