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Boost-Commit : |
Subject: [Boost-commit] svn:boost r54068 - in branches/release: . boost/proto boost/proto/transform libs/proto/doc/reference/concepts libs/proto/doc/reference/transform
From: eric_at_[hidden]
Date: 2009-06-18 18:16:57
Author: eric_niebler
Date: 2009-06-18 18:16:56 EDT (Thu, 18 Jun 2009)
New Revision: 54068
URL: http://svn.boost.org/trac/boost/changeset/54068
Log:
Merged revisions 54067 via svnmerge from
https://svn.boost.org/svn/boost/trunk
........
r54067 | eric_niebler | 2009-06-18 14:39:09 -0700 (Thu, 18 Jun 2009) | 1 line
add a sensible default for proto::_default's template parameter
........
Properties modified:
branches/release/ (props changed)
Text files modified:
branches/release/boost/proto/proto_fwd.hpp | 5 +++++
branches/release/boost/proto/transform/default.hpp | 11 ++++++++++-
branches/release/libs/proto/doc/reference/concepts/BasicPrimitiveTransform.xml | 2 +-
branches/release/libs/proto/doc/reference/transform/default.xml | 9 ++++++++-
4 files changed, 24 insertions(+), 3 deletions(-)
Modified: branches/release/boost/proto/proto_fwd.hpp
==============================================================================
--- branches/release/boost/proto/proto_fwd.hpp (original)
+++ branches/release/boost/proto/proto_fwd.hpp 2009-06-18 18:16:56 EDT (Thu, 18 Jun 2009)
@@ -188,6 +188,8 @@
///
#define BOOST_PROTO_UNCVREF(X) \
typename boost::remove_const<typename boost::remove_reference<X>::type>::type
+
+ struct _default;
}
typedef detail::ignore const ignore;
@@ -744,6 +746,9 @@
template<typename Grammar>
struct pass_through;
+ template<typename Grammar = detail::_default>
+ struct _default;
+
struct _expr;
struct _state;
struct _data;
Modified: branches/release/boost/proto/transform/default.hpp
==============================================================================
--- branches/release/boost/proto/transform/default.hpp (original)
+++ branches/release/boost/proto/transform/default.hpp 2009-06-18 18:16:56 EDT (Thu, 18 Jun 2009)
@@ -31,7 +31,7 @@
namespace boost { namespace proto
{
- template<typename Grammar>
+ template<typename Grammar BOOST_PROTO_WHEN_BUILDING_DOCS(= detail::_default)>
struct _default
: transform<_default<Grammar> >
{
@@ -463,6 +463,15 @@
: mpl::true_
{};
+ namespace detail
+ {
+ // Loopy indirection that allows proto::_default<> to be
+ // used without specifying a Grammar argument.
+ struct _default
+ : proto::_default<>
+ {};
+ }
+
}}
#endif
Modified: branches/release/libs/proto/doc/reference/concepts/BasicPrimitiveTransform.xml
==============================================================================
--- branches/release/libs/proto/doc/reference/concepts/BasicPrimitiveTransform.xml (original)
+++ branches/release/libs/proto/doc/reference/concepts/BasicPrimitiveTransform.xml 2009-06-18 18:16:56 EDT (Thu, 18 Jun 2009)
@@ -18,7 +18,7 @@
<description>
<para>
- A PrimitiveTransform is class type that
+ A BasicPrimitiveTransform is class type that
has a nested class template called impl that takes
three template parameters representing an expression
type, a state type and a data type. Specializations
Modified: branches/release/libs/proto/doc/reference/transform/default.xml
==============================================================================
--- branches/release/libs/proto/doc/reference/transform/default.xml (original)
+++ branches/release/libs/proto/doc/reference/transform/default.xml 2009-06-18 18:16:56 EDT (Thu, 18 Jun 2009)
@@ -4,7 +4,9 @@
<namespace name="proto">
<struct name="_default">
<template>
- <template-type-parameter name="Grammar"/>
+ <template-type-parameter name="Grammar">
+ <default><replaceable>unspecified</replaceable></default>
+ </template-type-parameter>
</template>
<inherit><classname>proto::transform</classname>< _default<Grammar> ></inherit>
<purpose>A <conceptname>PrimitiveTransform</conceptname> that gives expressions their
@@ -16,6 +18,11 @@
<classname>proto::_default::impl<></classname>
</computeroutput> class template.
</para>
+ <para>
+ When used without specifying a <computeroutput>Grammar</computeroutput> parameter,
+ <computeroutput>proto::_default</computeroutput> behaves as if the parameter were
+ <computeroutput>proto::_default<></computeroutput>.
+ </para>
</description>
<struct name="impl">
<template>
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