Contains definition of
proto::default_generator,
proto::generator<>,
proto::pod_generator<>
and other utilities that users can use to post-process new expression objects that
Proto creates.
A simple generator that passes an expression through unchanged.
Generators are intended for use as the first template parameter to the
proto::domain<>
class template and control if and how expressions within that domain are to be customized.
The proto::default_generator makes no modifications to the
expressions passed to it.
proto::callable
This(Expr)
Expr
Expr
Expr const &
A Proto expression
expr
A simple generator that passes an expression through unchanged while stating
a preference for proto::basic_expr<> over
proto::expr<>.
proto::use_basic_expr< proto::default_generator >
template< typename > class
A generator that wraps expressions passed to it in the specified extension wrapper.
Generators are intended for use as the first template parameter to the
proto::domain<>
class template and control if and how expressions within that domain are to be customized.
proto::generator<> wraps each expression passed to it in
the Extends<> wrapper.
This(Expr)
Extends< Expr >
Extends< Expr >
Expr const &
A Proto expression
Extends<Expr>(expr)
template< typename > class
A generator that wraps expressions passed to it in the specified extension wrapper and uses aggregate initialization for the wrapper.
Generators are intended for use as the first template parameter to the
proto::domain<>
class template and control if and how expressions within that domain are to be customized.
proto::pod_generator<> wraps each expression passed
to it in the Extends<> wrapper, and uses aggregate
initialzation for the wrapped object.
proto::callable
This(Expr)
Extends< Expr >
Extends< Expr >
Expr const &
A Proto expression
Extends<Expr> that = {expr}; return that;
A generator that replaces child nodes held by reference with ones held by value.
Use with proto::compose_generators<>
to forward that result to another generator.
Generators are intended for use as the first template parameter to the
proto::domain<>
class template and control if and how expressions within that domain are to be customized.
proto::by_value_generator ensures all child nodes are held
by value. This generator is typically composed with a second generator for further processing,
as proto::compose_generators<proto::by_value_generator,
MyGenerator>.
proto::callable
This(Expr)
unspecified
unspecified
Expr const &
A Proto expression.
Equivalent to proto::deep_copy(expr)
A composite generator that first applies one transform to an expression and then forwards
the result on to another generator for further transformation.
Generators are intended for use as the first template parameter to the
proto::domain<>
class template and control if and how expressions within that domain are to be customized.
proto::compose_generators<> is a composite generator
that first applies one transform to an expression and then forwards the result on to another
generator for further transformation.
proto::callable
This(Expr)
boost::result_of<
Second(typename boost::result_of<First(Expr)>::type)
>
typename boost::result_of<
Second(typename boost::result_of<First(Expr)>::type)
>::type
Expr const &
A Proto expression.
Second()(First()(expr))
Generator
Annotate a generator to indicate that it would
prefer to be passed instances of
proto::basic_expr<> rather than
proto::expr<>.
use_basic_expr< Generator > is itself a generator.
mpl::bool_< true-or-false >
A Boolean metafunction that tests a generator to see whether
it would prefer to be passed instances of
proto::basic_expr<> rather than
proto::expr<>.