diff options
author | Vlad Voicu <vladv@rosedu.org> | 2012-03-02 10:01:11 (GMT) |
---|---|---|
committer | Kevin Smith <git@kismith.co.uk> | 2012-03-09 15:04:05 (GMT) |
commit | 1c8cd160b79b6bbcec72042bdb104ba530508a93 (patch) | |
tree | cff302b81e74c557fbc9e30fd43144d981b613d0 /3rdParty/Boost/src/boost/spirit/home/support/context.hpp | |
parent | 2944711aefec9a9dd66052440bc4f921910dd780 (diff) | |
download | swift-contrib-1c8cd160b79b6bbcec72042bdb104ba530508a93.zip swift-contrib-1c8cd160b79b6bbcec72042bdb104ba530508a93.tar.bz2 |
Added spirit to bundled boost
Diffstat (limited to '3rdParty/Boost/src/boost/spirit/home/support/context.hpp')
-rw-r--r-- | 3rdParty/Boost/src/boost/spirit/home/support/context.hpp | 209 |
1 files changed, 209 insertions, 0 deletions
diff --git a/3rdParty/Boost/src/boost/spirit/home/support/context.hpp b/3rdParty/Boost/src/boost/spirit/home/support/context.hpp new file mode 100644 index 0000000..7c0ef38 --- /dev/null +++ b/3rdParty/Boost/src/boost/spirit/home/support/context.hpp @@ -0,0 +1,209 @@ +/*============================================================================= + 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(BOOST_SPIRIT_CONTEXT_OCTOBER_31_2008_0654PM) +#define BOOST_SPIRIT_CONTEXT_OCTOBER_31_2008_0654PM + +#if defined(_MSC_VER) +#pragma once +#endif + +#include <boost/preprocessor/repetition/repeat_from_to.hpp> +#include <boost/spirit/home/support/nonterminal/expand_arg.hpp> +#include <boost/spirit/home/support/assert_msg.hpp> +#include <boost/spirit/home/phoenix/core/actor.hpp> +#include <boost/spirit/home/phoenix/core/argument.hpp> +#include <boost/fusion/include/at.hpp> +#include <boost/fusion/include/size.hpp> +#include <boost/fusion/include/as_list.hpp> +#include <boost/fusion/include/transform.hpp> +#include <boost/mpl/size.hpp> +#include <boost/mpl/at.hpp> + +#if !defined(SPIRIT_ATTRIBUTES_LIMIT) +# define SPIRIT_ATTRIBUTES_LIMIT PHOENIX_LIMIT +#endif + +#define SPIRIT_DECLARE_ATTRIBUTE(z, n, data) \ + phoenix::actor<attribute<n> > const \ + BOOST_PP_CAT(_r, n) = attribute<n>(); + +#define SPIRIT_USING_ATTRIBUTE(z, n, data) using spirit::BOOST_PP_CAT(_r, n); + +namespace boost { namespace spirit +{ + template <typename Attributes, typename Locals> + struct context + { + typedef Attributes attributes_type; + typedef Locals locals_type; + + context(typename Attributes::car_type attribute) + : attributes(attribute, fusion::nil()), locals() {} + + template <typename Args, typename Context> + context( + typename Attributes::car_type attribute + , Args const& args + , Context& caller_context + ) : attributes( + attribute + , fusion::as_list( + fusion::transform( + args + , detail::expand_arg<Context>(caller_context) + ) + ) + ) + , locals() {} + + context(Attributes const& attributes) + : attributes(attributes), locals() {} + + Attributes attributes; // The attributes + Locals locals; // Local variables + }; + + template <typename Context> + struct attributes_of + { + typedef typename Context::attributes_type type; + }; + + template <typename Context> + struct attributes_of<Context const> + { + typedef typename Context::attributes_type const type; + }; + + template <typename Context> + struct locals_of + { + typedef typename Context::locals_type type; + }; + + template <typename Context> + struct locals_of<Context const> + { + typedef typename Context::locals_type const type; + }; + + template <int N> + struct attribute + { + typedef mpl::true_ no_nullary; + + template <typename Env> + struct result + { + typedef typename + attributes_of<typename + mpl::at_c<typename Env::args_type, 1>::type + >::type + attributes_type; + + typedef typename + fusion::result_of::size<attributes_type>::type + attributes_size; + + // report invalid argument not found (N is out of bounds) + BOOST_SPIRIT_ASSERT_MSG( + (N < attributes_size::value), + index_is_out_of_bounds, ()); + + typedef typename + fusion::result_of::at_c<attributes_type, N>::type + type; + }; + + template <typename Env> + typename result<Env>::type + eval(Env const& env) const + { + return fusion::at_c<N>((fusion::at_c<1>(env.args())).attributes); + } + }; + + template <int N> + struct local_variable + { + typedef mpl::true_ no_nullary; + + template <typename Env> + struct result + { + typedef typename + locals_of<typename + mpl::at_c<typename Env::args_type, 1>::type + >::type + locals_type; + + typedef typename + fusion::result_of::size<locals_type>::type + locals_size; + + // report invalid argument not found (N is out of bounds) + BOOST_SPIRIT_ASSERT_MSG( + (N < locals_size::value), + index_is_out_of_bounds, ()); + + typedef typename + fusion::result_of::at_c<locals_type, N>::type + type; + }; + + template <typename Env> + typename result<Env>::type + eval(Env const& env) const + { + return get_arg<N>((fusion::at_c<1>(env.args())).locals); + } + }; + + // _val refers to the 'return' value of a rule (same as _r0) + // _r1, _r2, ... refer to the rule arguments + phoenix::actor<attribute<0> > const _val = attribute<0>(); + phoenix::actor<attribute<0> > const _r0 = attribute<0>(); + phoenix::actor<attribute<1> > const _r1 = attribute<1>(); + phoenix::actor<attribute<2> > const _r2 = attribute<2>(); + + // Bring in the rest of the attributes (_r4 .. _rN+1), using PP + BOOST_PP_REPEAT_FROM_TO( + 3, SPIRIT_ATTRIBUTES_LIMIT, SPIRIT_DECLARE_ATTRIBUTE, _) + + // _a, _b, ... refer to the local variables of a rule + phoenix::actor<local_variable<0> > const _a = local_variable<0>(); + phoenix::actor<local_variable<1> > const _b = local_variable<1>(); + phoenix::actor<local_variable<2> > const _c = local_variable<2>(); + phoenix::actor<local_variable<3> > const _d = local_variable<3>(); + phoenix::actor<local_variable<4> > const _e = local_variable<4>(); + phoenix::actor<local_variable<5> > const _f = local_variable<5>(); + phoenix::actor<local_variable<6> > const _g = local_variable<6>(); + phoenix::actor<local_variable<7> > const _h = local_variable<7>(); + phoenix::actor<local_variable<8> > const _i = local_variable<8>(); + phoenix::actor<local_variable<9> > const _j = local_variable<9>(); + + // You can bring these in with the using directive + // without worrying about bringing in too much. + namespace labels + { + BOOST_PP_REPEAT(SPIRIT_ARGUMENTS_LIMIT, SPIRIT_USING_ARGUMENT, _) + BOOST_PP_REPEAT(SPIRIT_ATTRIBUTES_LIMIT, SPIRIT_USING_ATTRIBUTE, _) + using spirit::_val; + using spirit::_a; + using spirit::_b; + using spirit::_c; + using spirit::_d; + using spirit::_e; + using spirit::_f; + using spirit::_g; + using spirit::_h; + using spirit::_i; + using spirit::_j; + } +}} + +#endif |