Initial Commit

2018-02-08 21:28:33 -05:00
commit 678c1d3966
14352 changed files with 3176737 additions and 0 deletions
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+//---------------------------------------------------------------------------//
+// Copyright (c) 2013 Kyle Lutz <kyle.r.lutz@gmail.com>
+//
+// 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
+//
+// See http://boostorg.github.com/compute for more information.
+//---------------------------------------------------------------------------//
+
+#ifndef BOOST_COMPUTE_LAMBDA_RESULT_OF_HPP
+#define BOOST_COMPUTE_LAMBDA_RESULT_OF_HPP
+
+#include <boost/mpl/vector.hpp>
+#include <boost/proto/proto.hpp>
+
+#include <boost/compute/type_traits/common_type.hpp>
+
+namespace boost {
+namespace compute {
+namespace lambda {
+
+namespace mpl = boost::mpl;
+namespace proto = boost::proto;
+
+// meta-function returning the result type of a lambda expression
+template<class Expr,
+         class Args = void,
+         class Tags = typename proto::tag_of<Expr>::type>
+struct result_of
+{
+};
+
+// terminals
+template<class Expr, class Args>
+struct result_of<Expr, Args, proto::tag::terminal>
+{
+    typedef typename proto::result_of::value<Expr>::type type;
+};
+
+// binary operators
+#define BOOST_COMPUTE_LAMBDA_RESULT_OF_BINARY_OPERATOR(tag) \
+    template<class Expr, class Args> \
+    struct result_of<Expr, Args, tag> \
+    { \
+        typedef typename proto::result_of::child_c<Expr, 0>::type left; \
+        typedef typename proto::result_of::child_c<Expr, 1>::type right; \
+        \
+        typedef typename boost::common_type< \
+            typename ::boost::compute::lambda::result_of< \
+                         left, \
+                         Args, \
+                         typename proto::tag_of<left>::type>::type, \
+            typename ::boost::compute::lambda::result_of< \
+                         right, \
+                         Args, \
+                         typename proto::tag_of<right>::type>::type \
+         >::type type; \
+    };
+
+BOOST_COMPUTE_LAMBDA_RESULT_OF_BINARY_OPERATOR(proto::tag::plus)
+BOOST_COMPUTE_LAMBDA_RESULT_OF_BINARY_OPERATOR(proto::tag::minus)
+BOOST_COMPUTE_LAMBDA_RESULT_OF_BINARY_OPERATOR(proto::tag::multiplies)
+BOOST_COMPUTE_LAMBDA_RESULT_OF_BINARY_OPERATOR(proto::tag::divides)
+BOOST_COMPUTE_LAMBDA_RESULT_OF_BINARY_OPERATOR(proto::tag::modulus)
+BOOST_COMPUTE_LAMBDA_RESULT_OF_BINARY_OPERATOR(proto::tag::bitwise_and)
+BOOST_COMPUTE_LAMBDA_RESULT_OF_BINARY_OPERATOR(proto::tag::bitwise_or)
+BOOST_COMPUTE_LAMBDA_RESULT_OF_BINARY_OPERATOR(proto::tag::bitwise_xor)
+
+// comparision operators
+#define BOOST_COMPUTE_LAMBDA_RESULT_OF_COMPARISON_OPERATOR(tag) \
+    template<class Expr, class Args> \
+    struct result_of<Expr, Args, tag> \
+    { \
+        typedef bool type; \
+    };
+
+BOOST_COMPUTE_LAMBDA_RESULT_OF_COMPARISON_OPERATOR(proto::tag::less)
+BOOST_COMPUTE_LAMBDA_RESULT_OF_COMPARISON_OPERATOR(proto::tag::greater)
+BOOST_COMPUTE_LAMBDA_RESULT_OF_COMPARISON_OPERATOR(proto::tag::less_equal)
+BOOST_COMPUTE_LAMBDA_RESULT_OF_COMPARISON_OPERATOR(proto::tag::greater_equal)
+BOOST_COMPUTE_LAMBDA_RESULT_OF_COMPARISON_OPERATOR(proto::tag::equal_to)
+BOOST_COMPUTE_LAMBDA_RESULT_OF_COMPARISON_OPERATOR(proto::tag::not_equal_to)
+BOOST_COMPUTE_LAMBDA_RESULT_OF_COMPARISON_OPERATOR(proto::tag::logical_and)
+BOOST_COMPUTE_LAMBDA_RESULT_OF_COMPARISON_OPERATOR(proto::tag::logical_or)
+
+// assignment operator
+template<class Expr, class Args>
+struct result_of<Expr, Args, proto::tag::assign>
+{
+    typedef typename proto::result_of::child_c<Expr, 0>::type left;
+    typedef typename proto::result_of::child_c<Expr, 1>::type right;
+
+    typedef typename ::boost::compute::lambda::result_of<
+        right, Args, typename proto::tag_of<right>::type
+    >::type type;
+};
+
+// functions
+template<class Expr, class Args>
+struct result_of<Expr, Args, proto::tag::function>
+{
+    typedef typename proto::result_of::child_c<Expr, 0>::type func_expr;
+    typedef typename proto::result_of::value<func_expr>::type func;
+
+    typedef typename func::template lambda_result<Expr, Args>::type type;
+};
+
+} // end lambda namespace
+} // end compute namespace
+} // end boost namespace
+
+#endif // BOOST_COMPUTE_LAMBDA_RESULT_OF_HPP