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Boost-Commit : |
Subject: [Boost-commit] svn:boost r69091 - in trunk/boost/spirit/home/karma: . detail directive operator
From: hartmut.kaiser_at_[hidden]
Date: 2011-02-20 14:26:27
Author: hkaiser
Date: 2011-02-20 14:26:24 EST (Sun, 20 Feb 2011)
New Revision: 69091
URL: http://svn.boost.org/trac/boost/changeset/69091
Log:
Spirit: fixed karma::repeat to use the new attribute propagation scheme as well
Text files modified:
trunk/boost/spirit/home/karma/detail/indirect_iterator.hpp | 17 +++++++--
trunk/boost/spirit/home/karma/directive/repeat.hpp | 72 ++++++++++++++++++++++++---------------
trunk/boost/spirit/home/karma/operator/kleene.hpp | 6 ++-
trunk/boost/spirit/home/karma/operator/list.hpp | 5 +-
trunk/boost/spirit/home/karma/operator/plus.hpp | 6 ++-
trunk/boost/spirit/home/karma/operator/sequence.hpp | 11 +++--
trunk/boost/spirit/home/karma/phoenix_attributes.hpp | 14 +++++++
7 files changed, 88 insertions(+), 43 deletions(-)
Modified: trunk/boost/spirit/home/karma/detail/indirect_iterator.hpp
==============================================================================
--- trunk/boost/spirit/home/karma/detail/indirect_iterator.hpp (original)
+++ trunk/boost/spirit/home/karma/detail/indirect_iterator.hpp 2011-02-20 14:26:24 EST (Sun, 20 Feb 2011)
@@ -64,17 +64,21 @@
private:
Iterator* iter_;
};
+}}}}
+///////////////////////////////////////////////////////////////////////////////
+namespace boost { namespace spirit { namespace traits
+{
template <typename Iterator>
struct make_indirect_iterator
{
- typedef indirect_iterator<Iterator> type;
+ typedef karma::detail::indirect_iterator<Iterator> type;
};
template <typename Iterator>
- struct make_indirect_iterator<indirect_iterator<Iterator> >
+ struct make_indirect_iterator<karma::detail::indirect_iterator<Iterator> >
{
- typedef indirect_iterator<Iterator> type;
+ typedef karma::detail::indirect_iterator<Iterator> type;
};
template <>
@@ -82,6 +86,11 @@
{
typedef unused_type const* type;
};
-}}}}
+
+ template <typename Iterator>
+ struct make_indirect_iterator<Iterator const&>
+ : make_indirect_iterator<Iterator const>
+ {};
+}}}
#endif
Modified: trunk/boost/spirit/home/karma/directive/repeat.hpp
==============================================================================
--- trunk/boost/spirit/home/karma/directive/repeat.hpp (original)
+++ trunk/boost/spirit/home/karma/directive/repeat.hpp 2011-02-20 14:26:24 EST (Sun, 20 Feb 2011)
@@ -143,36 +143,36 @@
{
private:
// iterate over the given container until its exhausted or the embedded
- // (left) generator succeeds
- template <
- typename OutputIterator, typename Context, typename Delimiter
- , typename Iterator, typename Attribute>
- bool generate_subject(OutputIterator& sink, Context& ctx
- , Delimiter const& d, Iterator& it, Iterator& end, Attribute const&) const
+ // generator succeeds
+ template <typename F, typename Attribute>
+ bool generate_subject(F f, Attribute const&, mpl::false_) const
{
// Failing subject generators are just skipped. This allows to
// selectively generate items in the provided attribute.
- while (!traits::compare(it, end))
+ while (!f.is_at_end())
{
- if (subject.generate(sink, ctx, d, traits::deref(it)))
+ bool r = !f(subject);
+ if (r)
return true;
- if (Strict::value)
- return false;
- traits::next(it);
+ if (!f.is_at_end())
+ f.next();
}
return false;
}
- template <
- typename OutputIterator, typename Context, typename Delimiter
- , typename Iterator>
- bool generate_subject(OutputIterator& sink, Context& ctx
- , Delimiter const& d, Iterator&, Iterator&, unused_type) const
- {
- // There is no way to distinguish a failed generator from a
- // generator to be skipped. We assume the user takes responsibility
- // for ending the loop if no attribute is specified.
- return subject.generate(sink, ctx, d, unused);
+ template <typename F, typename Attribute>
+ bool generate_subject(F f, Attribute const&, mpl::true_) const
+ {
+ return !f(subject);
+ }
+
+ // There is no way to distinguish a failed generator from a
+ // generator to be skipped. We assume the user takes responsibility
+ // for ending the loop if no attribute is specified.
+ template <typename F>
+ bool generate_subject(F f, unused_type, mpl::false_) const
+ {
+ return !f(subject);
}
public:
@@ -198,18 +198,33 @@
bool generate(OutputIterator& sink, Context& ctx, Delimiter const& d
, Attribute const& attr) const
{
+ typedef detail::fail_function<
+ OutputIterator, Context, Delimiter
+ > fail_function;
+
typedef typename traits::container_iterator<
typename add_const<Attribute>::type
>::type iterator_type;
+ typedef
+ typename traits::make_indirect_iterator<iterator_type>::type
+ indirect_iterator_type;
+
+ typedef detail::pass_container<
+ fail_function, Attribute, indirect_iterator_type, Strict>
+ pass_container;
+
iterator_type it = traits::begin(attr);
iterator_type end = traits::end(attr);
- typename LoopIter::type i = iter.start();
+
+ pass_container pass(fail_function(sink, ctx, d),
+ indirect_iterator_type(it), indirect_iterator_type(end));
// generate the minimal required amount of output
- for (/**/; !iter.got_min(i); ++i, traits::next(it))
+ typename LoopIter::type i = iter.start();
+ for (/**/; !pass.is_at_end() && !iter.got_min(i); ++i)
{
- if (!generate_subject(sink, ctx, d, it, end, attr))
+ if (!generate_subject(pass, attr, Strict()))
{
// if we fail before reaching the minimum iteration
// required, do not output anything and return false
@@ -217,11 +232,13 @@
}
}
+ if (pass.is_at_end() && !iter.got_min(i))
+ return false; // insufficient attribute elements
+
// generate some more up to the maximum specified
- for (/**/; detail::sink_is_good(sink) && !iter.got_max(i);
- ++i, traits::next(it))
+ for (/**/; !pass.is_at_end() && !iter.got_max(i); ++i)
{
- if (!generate_subject(sink, ctx, d, it, end, attr))
+ if (!generate_subject(pass, attr, Strict()))
break;
}
return detail::sink_is_good(sink);
@@ -348,7 +365,6 @@
return result_type(subject, fusion::at_c<0>(term.args));
}
};
-
}}}
namespace boost { namespace spirit { namespace traits
Modified: trunk/boost/spirit/home/karma/operator/kleene.hpp
==============================================================================
--- trunk/boost/spirit/home/karma/operator/kleene.hpp (original)
+++ trunk/boost/spirit/home/karma/operator/kleene.hpp 2011-02-20 14:26:24 EST (Sun, 20 Feb 2011)
@@ -106,8 +106,10 @@
typedef typename traits::container_iterator<
typename add_const<Attribute>::type
>::type iterator_type;
- typedef typename detail::make_indirect_iterator<iterator_type>::type
- indirect_iterator_type;
+
+ typedef
+ typename traits::make_indirect_iterator<iterator_type>::type
+ indirect_iterator_type;
typedef detail::pass_container<
fail_function, Attribute, indirect_iterator_type, Strict>
pass_container;
Modified: trunk/boost/spirit/home/karma/operator/list.hpp
==============================================================================
--- trunk/boost/spirit/home/karma/operator/list.hpp (original)
+++ trunk/boost/spirit/home/karma/operator/list.hpp 2011-02-20 14:26:24 EST (Sun, 20 Feb 2011)
@@ -112,8 +112,9 @@
typedef typename traits::container_iterator<
typename add_const<Attribute>::type
>::type iterator_type;
+
typedef
- typename detail::make_indirect_iterator<iterator_type>::type
+ typename traits::make_indirect_iterator<iterator_type>::type
indirect_iterator_type;
typedef detail::pass_container<
fail_function, Attribute, indirect_iterator_type, Strict>
@@ -142,7 +143,7 @@
}
buffering.buffer_copy();
}
- return true;
+ return detail::sink_is_good(sink);
}
return false;
}
Modified: trunk/boost/spirit/home/karma/operator/plus.hpp
==============================================================================
--- trunk/boost/spirit/home/karma/operator/plus.hpp (original)
+++ trunk/boost/spirit/home/karma/operator/plus.hpp 2011-02-20 14:26:24 EST (Sun, 20 Feb 2011)
@@ -118,8 +118,10 @@
typedef typename traits::container_iterator<
typename add_const<Attribute>::type
>::type iterator_type;
- typedef typename detail::make_indirect_iterator<iterator_type>::type
- indirect_iterator_type;
+
+ typedef
+ typename traits::make_indirect_iterator<iterator_type>::type
+ indirect_iterator_type;
typedef detail::pass_container<
fail_function, Attribute, indirect_iterator_type, Strict>
pass_container;
Modified: trunk/boost/spirit/home/karma/operator/sequence.hpp
==============================================================================
--- trunk/boost/spirit/home/karma/operator/sequence.hpp (original)
+++ trunk/boost/spirit/home/karma/operator/sequence.hpp 2011-02-20 14:26:24 EST (Sun, 20 Feb 2011)
@@ -177,10 +177,13 @@
typedef detail::fail_function<
OutputIterator, Context, Delimiter> fail_function;
- typedef typename traits::container_iterator<Attribute const>::type
- iterator_type;
- typedef typename detail::make_indirect_iterator<iterator_type>::type
- indirect_iterator_type;
+ typedef typename traits::container_iterator<
+ typename add_const<Attribute>::type
+ >::type iterator_type;
+
+ typedef
+ typename traits::make_indirect_iterator<iterator_type>::type
+ indirect_iterator_type;
typedef detail::pass_container<
fail_function, Attribute, indirect_iterator_type, Strict>
pass_container;
Modified: trunk/boost/spirit/home/karma/phoenix_attributes.hpp
==============================================================================
--- trunk/boost/spirit/home/karma/phoenix_attributes.hpp (original)
+++ trunk/boost/spirit/home/karma/phoenix_attributes.hpp 2011-02-20 14:26:24 EST (Sun, 20 Feb 2011)
@@ -16,6 +16,7 @@
#if SPIRIT_VERSION >= 0x2020
#include <boost/spirit/home/karma/detail/attributes.hpp>
+#include <boost/spirit/home/karma/detail/indirect_iterator.hpp>
#include <boost/spirit/home/support/container.hpp>
#include <boost/spirit/include/phoenix_core.hpp>
@@ -90,6 +91,18 @@
}
};
+ template <typename Eval>
+ struct container_value<phoenix::actor<Eval> >
+ {
+ typedef phoenix::actor<Eval> const& type;
+ };
+
+ template <typename Eval>
+ struct make_indirect_iterator<phoenix::actor<Eval> const>
+ {
+ typedef phoenix::actor<Eval> const& type;
+ };
+
///////////////////////////////////////////////////////////////////////////
// Handle Phoenix actors as attributes, just invoke the function object
// and deal with the result as the attribute.
@@ -105,7 +118,6 @@
return f(unused, context);
}
};
-
}}}
#endif
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