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Sprout/sprout/weed/expr/eval.hpp

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2011-11-13 08:54:38 +00:00
#ifndef SPROUT_WEED_EXPR_EVAL_HPP
#define SPROUT_WEED_EXPR_EVAL_HPP
#include <sprout/config.hpp>
#include <sprout/weed/expr/make_terminal_or_expr.hpp>
#include <sprout/weed/traits/expr/terminal_or_expr_of.hpp>
namespace sprout {
namespace weed {
//
// eval
//
template<typename Expr, typename Context>
SPROUT_CONSTEXPR inline typename Context::template eval<
typename sprout::weed::traits::terminal_or_expr_of<Expr>::type
>::result_type eval(
Expr const& expr,
Context const& ctx
)
{
typedef typename Context::template eval<
typename sprout::weed::traits::terminal_or_expr_of<Expr>::type
> eval_type;
return eval_type()(
sprout::weed::make_terminal_or_expr(expr),
ctx
);
}
} // namespace weed
} // namespace sprout
#endif // #ifndef SPROUT_WEED_EXPR_EVAL_HPP