-
The customization point
transform_attribute
now has to implement a third function: void
fail(Exposed&)
,
which normally will do nothing. This function will be called whenever
the right hand side of the rule
(or the embedded parser of attr_cast
)
fail parsing. This change affects Qi only. See the
description of the traits::transform_attribute
for more
details.
-
Added support for attribute sequences created with
BOOST_FUSION_ADAPT_CLASS
and BOOST_FUSION_ADAPT_CLASS_NAMED
.
This support requires to include the new header file: #include
<boost/spirit/inlcude/support_adapt_class_attributes.hpp>
.
-
Added
karma::ostream_iterator
as a counterpart to
qi::istream_iterator
(see new header file:
#include <boost/spirit/home/support/iterators/ostream_iterator.hpp>
).
-
Added
qi::hold
allowing to make sure the embedded
parser does not touch the passed attribute in case it fails parsing.
-
Added
qi::no_skip
directive, which is
equivalent to qi::
lexeme
,
except that it does not pre-skip.
-
Added
karma::no_delimit
directive, which
is equivalent to karma::
verbatim
, except that it does
not perform a post-delimiting step.
-
Added a new input_iterator policy for the
multi_pass
iterator framework (named buffering_input_iterator
)
allowing to wrap underlying input iterators which do not store the last
character read from the input (such as std::istream_iterator
).
This is now used as the default input policy.
-
Sequences (in Qi and Karma)
may now have a component having no attribute even as their last element.
-
Sequences (in Qi and Karma)
can now take one element attribute sequences as their attribute.
-
Constructs like
karma::buffer[karma::buffer[...]]
don't result in performing double
buffering anymore. The same is true if an alternative is wrapped into
a karma::buffer[]
directive (as for instance: buffer[a] | b
).
-
The Spirit.Karma output iterator (which is used
internally, but also is exposed when using the stream based API) is now
properly copyable (thanks to Jonas Persson for reporting this issue).
-
The default
multi_pass
iterator is now usable with underlying input iterators which do not store
the last character read from the input (such as std::istream_iterator
).
Thanks to Larry Evans and Peter Schueller for independently reporting
this problem.
-
The directive
karma::omit[]
now does not accept an arbitrary attribute type anymore.
-
The Spirit.Karma predicates (the and-predicate and
the not-predicate) and the directive
karma::omit[]
now disable output altogether instead
of intercepting the output into a buffer which got discarded as before.
-
Fixed
karma::rule
to properly handles optional attributes.
-
The library does not minimize the generated lexer tables for dynamic
lexers by default anymore. The generated tables will now be minimized
for static lexers only.
-
The function
lexer<>::init_dfa()
now takes a single boolean parameter (which defaults to false
) allowing to force minimization
of the generated lexer tables.