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Boost-Commit : |
Subject: [Boost-commit] svn:boost r62926 - trunk/boost/proto
From: eric_at_[hidden]
Date: 2010-06-13 22:47:10
Author: eric_niebler
Date: 2010-06-13 22:47:07 EDT (Sun, 13 Jun 2010)
New Revision: 62926
URL: http://svn.boost.org/trac/boost/changeset/62926
Log:
sigh, add back some ADL-blocker namespaces
Text files modified:
trunk/boost/proto/args.hpp | 42 ++--
trunk/boost/proto/domain.hpp | 370 ++++++++++++++++++++-------------------
trunk/boost/proto/proto_fwd.hpp | 46 +++-
trunk/boost/proto/traits.hpp | 29 +-
4 files changed, 252 insertions(+), 235 deletions(-)
Modified: trunk/boost/proto/args.hpp
==============================================================================
--- trunk/boost/proto/args.hpp (original)
+++ trunk/boost/proto/args.hpp 2010-06-13 22:47:07 EDT (Sun, 13 Jun 2010)
@@ -142,30 +142,32 @@
typedef mpl::void_ BOOST_PP_CAT(child, n); \
/**< INTERNAL ONLY */
- /// \brief A type sequence, for use as the 2nd parameter to the \c expr\<\> class template.
- ///
- /// A type sequence, for use as the 2nd parameter to the \c expr\<\> class template.
- /// The types in the sequence correspond to the children of a node in an expression tree.
- template< typename Arg0 >
- struct term
+ namespace argsns_
{
- BOOST_STATIC_CONSTANT(long, arity = 0);
- typedef Arg0 child0;
-
- #if BOOST_WORKAROUND(BOOST_MSVC, BOOST_TESTED_AT(1500))
- BOOST_PP_REPEAT_FROM_TO(1, BOOST_PROTO_MAX_ARITY, BOOST_PROTO_DEFINE_VOID_N, ~)
- #endif
-
- /// INTERNAL ONLY
+ /// \brief A type sequence, for use as the 2nd parameter to the \c expr\<\> class template.
///
- typedef Arg0 back_;
- };
-
- #define BOOST_PP_ITERATION_PARAMS_1 (3, (1, BOOST_PROTO_MAX_ARITY, <boost/proto/args.hpp>))
- #include BOOST_PP_ITERATE()
+ /// A type sequence, for use as the 2nd parameter to the \c expr\<\> class template.
+ /// The types in the sequence correspond to the children of a node in an expression tree.
+ template< typename Arg0 >
+ struct term
+ {
+ BOOST_STATIC_CONSTANT(long, arity = 0);
+ typedef Arg0 child0;
+
+ #if BOOST_WORKAROUND(BOOST_MSVC, BOOST_TESTED_AT(1500))
+ BOOST_PP_REPEAT_FROM_TO(1, BOOST_PROTO_MAX_ARITY, BOOST_PROTO_DEFINE_VOID_N, ~)
+ #endif
+
+ /// INTERNAL ONLY
+ ///
+ typedef Arg0 back_;
+ };
- #undef BOOST_PROTO_DEFINE_CHILD_N
+ #define BOOST_PP_ITERATION_PARAMS_1 (3, (1, BOOST_PROTO_MAX_ARITY, <boost/proto/args.hpp>))
+ #include BOOST_PP_ITERATE()
+ #undef BOOST_PROTO_DEFINE_CHILD_N
+ }
////////////////////////////////////////////////////////////////////////////////////////////
}}
#endif
Modified: trunk/boost/proto/domain.hpp
==============================================================================
--- trunk/boost/proto/domain.hpp (original)
+++ trunk/boost/proto/domain.hpp 2010-06-13 22:47:07 EDT (Sun, 13 Jun 2010)
@@ -33,185 +33,208 @@
{};
}
- /// \brief For use in defining domain tags to be used
- /// with \c proto::extends\<\>. A \e Domain associates
- /// an expression type with a \e Generator, and optionally
- /// a \e Grammar.
- ///
- /// The Generator determines how new expressions in the
- /// domain are constructed. Typically, a generator wraps
- /// all new expressions in a wrapper that imparts
- /// domain-specific behaviors to expressions within its
- /// domain. (See \c proto::extends\<\>.)
- ///
- /// The Grammar determines whether a given expression is
- /// valid within the domain, and automatically disables
- /// any operator overloads which would cause an invalid
- /// expression to be created. By default, the Grammar
- /// parameter defaults to the wildcard, \c proto::_, which
- /// makes all expressions valid within the domain.
- ///
- /// The Super declares the domain currently being defined
- /// to be a sub-domain of Super. Expressions in sub-domains
- /// can be freely combined with expressions in its super-
- /// domain (and <I>its</I> super-domain, etc.).
- ///
- /// Example:
- /// \code
- /// template<typename Expr>
- /// struct MyExpr;
- ///
- /// struct MyGrammar
- /// : or_< terminal<_>, plus<MyGrammar, MyGrammar> >
- /// {};
- ///
- /// // Define MyDomain, in which all expressions are
- /// // wrapped in MyExpr<> and only expressions that
- /// // conform to MyGrammar are allowed.
- /// struct MyDomain
- /// : domain<generator<MyExpr>, MyGrammar>
- /// {};
- ///
- /// // Use MyDomain to define MyExpr
- /// template<typename Expr>
- /// struct MyExpr
- /// : extends<Expr, MyExpr<Expr>, MyDomain>
- /// {
- /// // ...
- /// };
- /// \endcode
- ///
- template<
- typename Generator // = default_generator
- , typename Grammar // = proto::_
- , typename Super // = no_super_domain
- >
- struct domain
- : Generator
+ namespace domainns_
{
- typedef Generator proto_generator;
- typedef Grammar proto_grammar;
- typedef Super proto_super_domain;
- typedef domain proto_base_domain;
-
- /// INTERNAL ONLY
- typedef void proto_is_domain_;
-
- /// \brief A unary MonomorphicFunctionObject that turns objects into Proto
- /// expression objects in this domain.
- ///
- /// The <tt>as_expr\<\></tt> function object turns objects into Proto expressions, if
- /// they are not already, by making them Proto terminals held by value if
- /// possible. Objects that are already Proto expressions are left alone.
- ///
- /// If <tt>wants_basic_expr\<Generator\>::value</tt> is true, then let \c E be \c basic_expr;
- /// otherwise, let \t E be \c expr. Given an lvalue \c t of type \c T:
- ///
- /// If \c T is not a Proto expression type the resulting terminal is
- /// calculated as follows:
- ///
- /// If \c T is a function type, an abstract type, or a type derived from
- /// \c std::ios_base, let \c A be <tt>T &</tt>.
- /// Otherwise, let \c A be the type \c T stripped of cv-qualifiers.
- /// Then, the result of applying <tt>as_expr\<T\>()(t)</tt> is
- /// <tt>Generator()(E\<tag::terminal, term\<A\> \>::make(t))</tt>.
- ///
- /// If \c T is a Proto expression type and its generator type is different from
- /// \c Generator, the result is <tt>Generator()(t)</tt>.
- ///
- /// Otherwise, the result is \c t converted to an (un-const) rvalue.
- ///
- template<typename T, typename IsExpr = void, typename Callable = proto::callable>
- struct as_expr
- : detail::as_expr<
- T
- , typename detail::base_generator<Generator>::type
- , wants_basic_expr<Generator>::value
- >
+ /// \brief For use in defining domain tags to be used
+ /// with \c proto::extends\<\>. A \e Domain associates
+ /// an expression type with a \e Generator, and optionally
+ /// a \e Grammar.
+ ///
+ /// The Generator determines how new expressions in the
+ /// domain are constructed. Typically, a generator wraps
+ /// all new expressions in a wrapper that imparts
+ /// domain-specific behaviors to expressions within its
+ /// domain. (See \c proto::extends\<\>.)
+ ///
+ /// The Grammar determines whether a given expression is
+ /// valid within the domain, and automatically disables
+ /// any operator overloads which would cause an invalid
+ /// expression to be created. By default, the Grammar
+ /// parameter defaults to the wildcard, \c proto::_, which
+ /// makes all expressions valid within the domain.
+ ///
+ /// The Super declares the domain currently being defined
+ /// to be a sub-domain of Super. Expressions in sub-domains
+ /// can be freely combined with expressions in its super-
+ /// domain (and <I>its</I> super-domain, etc.).
+ ///
+ /// Example:
+ /// \code
+ /// template<typename Expr>
+ /// struct MyExpr;
+ ///
+ /// struct MyGrammar
+ /// : or_< terminal<_>, plus<MyGrammar, MyGrammar> >
+ /// {};
+ ///
+ /// // Define MyDomain, in which all expressions are
+ /// // wrapped in MyExpr<> and only expressions that
+ /// // conform to MyGrammar are allowed.
+ /// struct MyDomain
+ /// : domain<generator<MyExpr>, MyGrammar>
+ /// {};
+ ///
+ /// // Use MyDomain to define MyExpr
+ /// template<typename Expr>
+ /// struct MyExpr
+ /// : extends<Expr, MyExpr<Expr>, MyDomain>
+ /// {
+ /// // ...
+ /// };
+ /// \endcode
+ ///
+ template<
+ typename Generator // = default_generator
+ , typename Grammar // = proto::_
+ , typename Super // = no_super_domain
+ >
+ struct domain
+ : Generator
{
- BOOST_PROTO_CALLABLE()
+ typedef Generator proto_generator;
+ typedef Grammar proto_grammar;
+ typedef Super proto_super_domain;
+ typedef domain proto_base_domain;
+
+ /// INTERNAL ONLY
+ typedef void proto_is_domain_;
+
+ /// \brief A unary MonomorphicFunctionObject that turns objects into Proto
+ /// expression objects in this domain.
+ ///
+ /// The <tt>as_expr\<\></tt> function object turns objects into Proto expressions, if
+ /// they are not already, by making them Proto terminals held by value if
+ /// possible. Objects that are already Proto expressions are left alone.
+ ///
+ /// If <tt>wants_basic_expr\<Generator\>::value</tt> is true, then let \c E be \c basic_expr;
+ /// otherwise, let \t E be \c expr. Given an lvalue \c t of type \c T:
+ ///
+ /// If \c T is not a Proto expression type the resulting terminal is
+ /// calculated as follows:
+ ///
+ /// If \c T is a function type, an abstract type, or a type derived from
+ /// \c std::ios_base, let \c A be <tt>T &</tt>.
+ /// Otherwise, let \c A be the type \c T stripped of cv-qualifiers.
+ /// Then, the result of applying <tt>as_expr\<T\>()(t)</tt> is
+ /// <tt>Generator()(E\<tag::terminal, term\<A\> \>::make(t))</tt>.
+ ///
+ /// If \c T is a Proto expression type and its generator type is different from
+ /// \c Generator, the result is <tt>Generator()(t)</tt>.
+ ///
+ /// Otherwise, the result is \c t converted to an (un-const) rvalue.
+ ///
+ template<typename T, typename IsExpr = void, typename Callable = proto::callable>
+ struct as_expr
+ : detail::as_expr<
+ T
+ , typename detail::base_generator<Generator>::type
+ , wants_basic_expr<Generator>::value
+ >
+ {
+ BOOST_PROTO_CALLABLE()
+ };
+
+ /// INTERNAL ONLY
+ ///
+ template<typename T>
+ struct as_expr<T, typename T::proto_is_expr_, proto::callable>
+ : detail::already_expr<
+ T
+ , typename detail::base_generator<Generator>::type
+ , is_same<
+ typename detail::base_generator<Generator>::type
+ , typename detail::base_generator<typename T::proto_generator>::type
+ >::value
+ >
+ {
+ BOOST_PROTO_CALLABLE()
+ };
+
+ /// \brief A unary MonomorphicFunctionObject that turns objects into Proto
+ /// expression objects in this domain.
+ ///
+ /// The <tt>as_child\<\></tt> function object turns objects into Proto expressions, if
+ /// they are not already, by making them Proto terminals held by reference.
+ /// Objects that are already Proto expressions are simply returned by reference.
+ ///
+ /// If <tt>wants_basic_expr\<Generator\>::value</tt> is true, then let \c E be \c basic_expr;
+ /// otherwise, let \t E be \c expr. Given an lvalue \c t of type \c T:
+ ///
+ /// If \c T is not a Proto expression type the resulting terminal is
+ /// <tt>Generator()(E\<tag::terminal, term\<T &\> \>::make(t))</tt>.
+ ///
+ /// If \c T is a Proto expression type and its generator type is different from
+ /// \c Generator, the result is <tt>Generator()(t)</tt>.
+ ///
+ /// Otherwise, the result is the lvalue \c t.
+ ///
+ template<typename T, typename IsExpr = void, typename Callable = proto::callable>
+ struct as_child
+ : detail::as_child<
+ T
+ , typename detail::base_generator<Generator>::type
+ , wants_basic_expr<Generator>::value
+ >
+ {
+ BOOST_PROTO_CALLABLE()
+ };
+
+ /// INTERNAL ONLY
+ ///
+ template<typename T>
+ struct as_child<T, typename T::proto_is_expr_, proto::callable>
+ : detail::already_child<
+ T
+ , typename detail::base_generator<Generator>::type
+ , is_same<
+ typename detail::base_generator<Generator>::type
+ , typename detail::base_generator<typename T::proto_generator>::type
+ >::value
+ >
+ {
+ BOOST_PROTO_CALLABLE()
+ };
};
- /// INTERNAL ONLY
+ /// \brief The domain expressions have by default, if
+ /// \c proto::extends\<\> has not been used to associate
+ /// a domain with an expression.
///
- template<typename T>
- struct as_expr<T, typename T::proto_is_expr_, proto::callable>
- : detail::already_expr<
- T
- , typename detail::base_generator<Generator>::type
- , is_same<
- typename detail::base_generator<Generator>::type
- , typename detail::base_generator<typename T::proto_generator>::type
- >::value
- >
- {
- BOOST_PROTO_CALLABLE()
- };
+ struct default_domain
+ : domain<>
+ {};
- /// \brief A unary MonomorphicFunctionObject that turns objects into Proto
- /// expression objects in this domain.
+ /// \brief A pseudo-domain for use in functions and
+ /// metafunctions that require a domain parameter. It
+ /// indicates that the domain of the parent node should
+ /// be inferred from the domains of the child nodes.
+ ///
+ /// \attention \c deduce_domain is not itself a valid domain.
///
- /// The <tt>as_child\<\></tt> function object turns objects into Proto expressions, if
- /// they are not already, by making them Proto terminals held by reference.
- /// Objects that are already Proto expressions are simply returned by reference.
- ///
- /// If <tt>wants_basic_expr\<Generator\>::value</tt> is true, then let \c E be \c basic_expr;
- /// otherwise, let \t E be \c expr. Given an lvalue \c t of type \c T:
- ///
- /// If \c T is not a Proto expression type the resulting terminal is
- /// <tt>Generator()(E\<tag::terminal, term\<T &\> \>::make(t))</tt>.
- ///
- /// If \c T is a Proto expression type and its generator type is different from
- /// \c Generator, the result is <tt>Generator()(t)</tt>.
- ///
- /// Otherwise, the result is the lvalue \c t.
- ///
- template<typename T, typename IsExpr = void, typename Callable = proto::callable>
- struct as_child
- : detail::as_child<
- T
- , typename detail::base_generator<Generator>::type
- , wants_basic_expr<Generator>::value
- >
+ struct deduce_domain
+ : domain<detail::not_a_generator, detail::not_a_grammar, detail::not_a_domain>
+ {};
+
+ /// \brief Given a domain, a tag type and an argument list,
+ /// compute the type of the expression to generate. This is
+ /// either an instance of \c proto::expr\<\> or
+ /// \c proto::basic_expr\<\>.
+ ///
+ template<typename Domain, typename Tag, typename Args, typename Void /*= void*/>
+ struct base_expr
{
- BOOST_PROTO_CALLABLE()
+ typedef proto::expr<Tag, Args, Args::arity> type;
};
/// INTERNAL ONLY
///
- template<typename T>
- struct as_child<T, typename T::proto_is_expr_, proto::callable>
- : detail::already_child<
- T
- , typename detail::base_generator<Generator>::type
- , is_same<
- typename detail::base_generator<Generator>::type
- , typename detail::base_generator<typename T::proto_generator>::type
- >::value
- >
+ template<typename Domain, typename Tag, typename Args>
+ struct base_expr<Domain, Tag, Args, typename Domain::proto_generator::proto_use_basic_expr_>
{
- BOOST_PROTO_CALLABLE()
+ typedef proto::basic_expr<Tag, Args, Args::arity> type;
};
- };
-
- /// \brief The domain expressions have by default, if
- /// \c proto::extends\<\> has not been used to associate
- /// a domain with an expression.
- ///
- struct default_domain
- : domain<>
- {};
- /// \brief A pseudo-domain for use in functions and
- /// metafunctions that require a domain parameter. It
- /// indicates that the domain of the parent node should
- /// be inferred from the domains of the child nodes.
- ///
- /// \attention \c deduce_domain is not itself a valid domain.
- ///
- struct deduce_domain
- : domain<detail::not_a_generator, detail::not_a_grammar, detail::not_a_domain>
- {};
+ }
/// A metafunction that returns \c mpl::true_
/// if the type \c T is the type of a Proto domain;
@@ -273,25 +296,6 @@
typedef typename domain_of<T>::type type;
};
- /// \brief Given a domain, a tag type and an argument list,
- /// compute the type of the expression to generate. This is
- /// either an instance of \c proto::expr\<\> or
- /// \c proto::basic_expr\<\>.
- ///
- template<typename Domain, typename Tag, typename Args, typename Void /*= void*/>
- struct base_expr
- {
- typedef proto::expr<Tag, Args, Args::arity> type;
- };
-
- /// INTERNAL ONLY
- ///
- template<typename Domain, typename Tag, typename Args>
- struct base_expr<Domain, Tag, Args, typename Domain::proto_generator::proto_use_basic_expr_>
- {
- typedef proto::basic_expr<Tag, Args, Args::arity> type;
- };
-
}}
#endif
Modified: trunk/boost/proto/proto_fwd.hpp
==============================================================================
--- trunk/boost/proto/proto_fwd.hpp (original)
+++ trunk/boost/proto/proto_fwd.hpp 2010-06-13 22:47:07 EDT (Sun, 13 Jun 2010)
@@ -166,14 +166,19 @@
typedef detail::ignore const ignore;
- template<typename Arg0>
- struct term;
+ namespace argsns_
+ {
+ template<typename Arg0>
+ struct term;
- #define M0(Z, N, DATA) \
- template<BOOST_PP_ENUM_PARAMS_Z(Z, N, typename Arg)> struct BOOST_PP_CAT(list, N); \
- /**/
- BOOST_PP_REPEAT_FROM_TO(1, BOOST_PP_INC(BOOST_PROTO_MAX_ARITY), M0, ~)
- #undef M0
+ #define M0(Z, N, DATA) \
+ template<BOOST_PP_ENUM_PARAMS_Z(Z, N, typename Arg)> struct BOOST_PP_CAT(list, N); \
+ /**/
+ BOOST_PP_REPEAT_FROM_TO(1, BOOST_PP_INC(BOOST_PROTO_MAX_ARITY), M0, ~)
+ #undef M0
+ }
+
+ using namespace argsns_;
///////////////////////////////////////////////////////////////////////////////
// Operator tags
@@ -258,21 +263,26 @@
struct use_basic_expr;
////////////////////////////////////////////////////////////////////////////////////////////////
- typedef detail::not_a_domain no_super_domain;
+ namespace domainns_
+ {
+ typedef detail::not_a_domain no_super_domain;
- template<
- typename Generator = default_generator
- , typename Grammar = proto::_
- , typename Super = no_super_domain
- >
- struct domain;
+ template<
+ typename Generator = default_generator
+ , typename Grammar = proto::_
+ , typename Super = no_super_domain
+ >
+ struct domain;
- struct default_domain;
+ struct default_domain;
- struct deduce_domain;
+ struct deduce_domain;
+
+ template<typename Domain, typename Tag, typename Args, typename Void = void>
+ struct base_expr;
+ }
- template<typename Domain, typename Tag, typename Args, typename Void = void>
- struct base_expr;
+ using namespace domainns_;
////////////////////////////////////////////////////////////////////////////////////////////////
namespace exprns_
Modified: trunk/boost/proto/traits.hpp
==============================================================================
--- trunk/boost/proto/traits.hpp (original)
+++ trunk/boost/proto/traits.hpp 2010-06-13 22:47:07 EDT (Sun, 13 Jun 2010)
@@ -28,6 +28,7 @@
#include <boost/mpl/aux_/lambda_arity_param.hpp>
#include <boost/type_traits/is_pod.hpp>
#include <boost/type_traits/is_same.hpp>
+ #include <boost/type_traits/add_const.hpp>
#include <boost/proto/proto_fwd.hpp>
#include <boost/proto/args.hpp>
#include <boost/proto/domain.hpp>
@@ -630,7 +631,7 @@
/// \param t The object to wrap.
/// \return <tt>proto::as_expr\<Domain\>(t)</tt>
template<typename T>
- typename result<as_expr(T &)>::type
+ typename add_const<typename result<as_expr(T &)>::type>::type
operator ()(T &t) const
{
return typename Domain::template as_expr<T>()(t);
@@ -639,7 +640,7 @@
/// \overload
///
template<typename T>
- typename result<as_expr(T const &)>::type
+ typename add_const<typename result<as_expr(T const &)>::type>::type
operator ()(T const &t) const
{
return typename Domain::template as_expr<T const>()(t);
@@ -647,14 +648,14 @@
#if BOOST_WORKAROUND(BOOST_MSVC, == 1310)
template<typename T, std::size_t N_>
- typename result<as_expr(T (&)[N_])>::type
+ typename add_const<typename result<as_expr(T (&)[N_])>::type>::type
operator ()(T (&t)[N_]) const
{
return typename Domain::template as_expr<T[N_]>()(t);
}
template<typename T, std::size_t N_>
- typename result<as_expr(T const (&)[N_])>::type
+ typename add_const<typename result<as_expr(T const (&)[N_])>::type>::type
operator ()(T const (&t)[N_]) const
{
return typename Domain::template as_expr<T const[N_]>()(t);
@@ -689,7 +690,7 @@
/// \param t The object to wrap.
/// \return <tt>proto::as_child\<Domain\>(t)</tt>
template<typename T>
- typename result<as_child(T &)>::type
+ typename add_const<typename result<as_child(T &)>::type>::type
operator ()(T &t) const
{
return typename Domain::template as_child<T>()(t);
@@ -698,7 +699,7 @@
/// \overload
///
template<typename T>
- typename result<as_child(T const &)>::type
+ typename add_const<typename result<as_child(T const &)>::type>::type
operator ()(T const &t) const
{
return typename Domain::template as_child<T const>()(t);
@@ -923,7 +924,7 @@
///
/// \param t The object to wrap.
template<typename T>
- typename result_of::as_expr<T, default_domain>::type
+ typename add_const<typename result_of::as_expr<T, default_domain>::type>::type
as_expr(T &t BOOST_PROTO_DISABLE_IF_IS_CONST(T) BOOST_PROTO_DISABLE_IF_IS_FUNCTION(T))
{
return default_domain::as_expr<T>()(t);
@@ -932,7 +933,7 @@
/// \overload
///
template<typename T>
- typename result_of::as_expr<T const, default_domain>::type
+ typename add_const<typename result_of::as_expr<T const, default_domain>::type>::type
as_expr(T const &t)
{
return default_domain::as_expr<T const>()(t);
@@ -941,7 +942,7 @@
/// \overload
///
template<typename Domain, typename T>
- typename result_of::as_expr<T, Domain>::type
+ typename add_const<typename result_of::as_expr<T, Domain>::type>::type
as_expr(T &t BOOST_PROTO_DISABLE_IF_IS_CONST(T) BOOST_PROTO_DISABLE_IF_IS_FUNCTION(T))
{
return typename Domain::template as_expr<T>()(t);
@@ -950,7 +951,7 @@
/// \overload
///
template<typename Domain, typename T>
- typename result_of::as_expr<T const, Domain>::type
+ typename add_const<typename result_of::as_expr<T const, Domain>::type>::type
as_expr(T const &t)
{
return typename Domain::template as_expr<T const>()(t);
@@ -976,7 +977,7 @@
///
/// \param t The object to wrap.
template<typename T>
- typename result_of::as_child<T, default_domain>::type
+ typename add_const<typename result_of::as_child<T, default_domain>::type>::type
as_child(T &t BOOST_PROTO_DISABLE_IF_IS_CONST(T) BOOST_PROTO_DISABLE_IF_IS_FUNCTION(T))
{
return default_domain::as_child<T>()(t);
@@ -985,7 +986,7 @@
/// \overload
///
template<typename T>
- typename result_of::as_child<T const, default_domain>::type
+ typename add_const<typename result_of::as_child<T const, default_domain>::type>::type
as_child(T const &t)
{
return default_domain::as_child<T const>()(t);
@@ -994,7 +995,7 @@
/// \overload
///
template<typename Domain, typename T>
- typename result_of::as_child<T, Domain>::type
+ typename add_const<typename result_of::as_child<T, Domain>::type>::type
as_child(T &t BOOST_PROTO_DISABLE_IF_IS_CONST(T) BOOST_PROTO_DISABLE_IF_IS_FUNCTION(T))
{
return typename Domain::template as_child<T>()(t);
@@ -1003,7 +1004,7 @@
/// \overload
///
template<typename Domain, typename T>
- typename result_of::as_child<T const, Domain>::type
+ typename add_const<typename result_of::as_child<T const, Domain>::type>::type
as_child(T const &t)
{
return typename Domain::template as_child<T const>()(t);
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