228 lines
8.3 KiB
C++
228 lines
8.3 KiB
C++
/*=============================================================================
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Copyright (c) 2001-2011 Hartmut Kaiser
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Distributed under the Boost Software License, Version 1.0. (See accompanying
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file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
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==============================================================================*/
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#if !defined(BOOST_SPIRIT_MATCH_MANIP_MAY_05_2007_1203PM)
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#define BOOST_SPIRIT_MATCH_MANIP_MAY_05_2007_1203PM
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#if defined(_MSC_VER)
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#pragma once
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#endif
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#include <boost/spirit/home/qi/parse.hpp>
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#include <boost/spirit/home/support/iterators/istream_iterator.hpp>
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#include <boost/spirit/home/support/unused.hpp>
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#include <boost/core/enable_if.hpp>
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#include <boost/mpl/bool.hpp>
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#include <iosfwd>
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#include <iterator>
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#include <string>
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///////////////////////////////////////////////////////////////////////////////
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namespace boost { namespace spirit { namespace qi { namespace detail
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{
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///////////////////////////////////////////////////////////////////////////
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#ifdef _MSC_VER
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# pragma warning(push)
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# pragma warning(disable: 4512) // assignment operator could not be generated.
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#endif
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template <typename Expr
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, typename CopyExpr = mpl::false_, typename CopyAttr = mpl::false_
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, typename Skipper = unused_type, typename Attribute = unused_type const>
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struct match_manip
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{
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// This assertion makes sure we don't hit the only code path which is
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// not implemented (because it isn't needed), where both, the
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// expression and the attribute need to be held as a copy.
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BOOST_SPIRIT_ASSERT_MSG(!CopyExpr::value || !CopyAttr::value
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, error_invalid_should_not_happen, ());
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match_manip(Expr const& xpr, Skipper const& s, Attribute& a)
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: expr(xpr), skipper(s), attr(a), post_skip(skip_flag::postskip) {}
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match_manip(Expr const& xpr, Skipper const& s
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, BOOST_SCOPED_ENUM(skip_flag) ps, Attribute& a)
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: expr(xpr), skipper(s), attr(a), post_skip(ps) {}
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Expr const& expr;
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Skipper const& skipper;
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Attribute& attr;
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BOOST_SCOPED_ENUM(skip_flag) const post_skip;
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};
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template <typename Expr, typename Skipper, typename Attribute>
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struct match_manip<Expr, mpl::false_, mpl::true_, Skipper, Attribute>
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{
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match_manip(Expr const& xpr, Skipper const& s, Attribute& a)
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: expr(xpr), skipper(s), attr(a), post_skip(skip_flag::postskip) {}
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match_manip(Expr const& xpr, Skipper const& s
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, BOOST_SCOPED_ENUM(skip_flag) ps, Attribute& a)
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: expr(xpr), skipper(s), attr(a), post_skip(ps) {}
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Expr const& expr;
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Skipper const& skipper;
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Attribute attr;
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BOOST_SCOPED_ENUM(skip_flag) const post_skip;
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};
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template <typename Expr, typename Skipper, typename Attribute>
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struct match_manip<Expr, mpl::true_, mpl::false_, Skipper, Attribute>
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{
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match_manip(Expr const& xpr, Skipper const& s, Attribute& a)
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: expr(xpr), skipper(s), attr(a), post_skip(skip_flag::postskip) {}
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match_manip(Expr const& xpr, Skipper const& s
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, BOOST_SCOPED_ENUM(skip_flag) ps, Attribute& a)
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: expr(xpr), skipper(s), attr(a), post_skip(ps) {}
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Expr expr;
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Skipper const& skipper;
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Attribute& attr;
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BOOST_SCOPED_ENUM(skip_flag) const post_skip;
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};
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#ifdef _MSC_VER
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# pragma warning(pop)
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#endif
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///////////////////////////////////////////////////////////////////////////
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template <typename Expr, typename Enable = void>
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struct match
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{
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// Report invalid expression error as early as possible.
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// If you got an error_invalid_expression error message here,
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// then the expression (expr) is not a valid spirit qi expression.
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// Did you intend to use the auto_ facilities while forgetting to
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// #include <boost/spirit/include/qi_match_auto.hpp>?
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BOOST_SPIRIT_ASSERT_MATCH(qi::domain, Expr);
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};
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template <typename Expr>
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struct match<Expr
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, typename enable_if<traits::matches<qi::domain, Expr> >::type>
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{
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typedef match_manip<Expr> type;
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static type call(Expr const& expr)
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{
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return type(expr, unused, unused);
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}
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};
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///////////////////////////////////////////////////////////////////////////
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template <typename Expr, typename Skipper, typename Enable = void>
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struct phrase_match
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{
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// Report invalid expression error as early as possible.
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// If you got an error_invalid_expression error message here,
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// then the expression (expr) is not a valid spirit qi expression.
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// Did you intend to use the auto_ facilities while forgetting to
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// #include <boost/spirit/include/qi_match_auto.hpp>?
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BOOST_SPIRIT_ASSERT_MATCH(qi::domain, Expr);
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};
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template <typename Expr, typename Skipper>
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struct phrase_match<Expr, Skipper
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, typename enable_if<traits::matches<qi::domain, Expr> >::type>
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{
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typedef match_manip<Expr, mpl::false_, mpl::false_, Skipper> type;
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static type call(
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Expr const& expr
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, Skipper const& skipper
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, BOOST_SCOPED_ENUM(skip_flag) post_skip)
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{
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// Report invalid expression error as early as possible.
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// If you got an error_invalid_expression error message here,
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// then the delimiter is not a valid spirit karma expression.
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BOOST_SPIRIT_ASSERT_MATCH(qi::domain, Skipper);
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return type(expr, skipper, post_skip, unused);
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}
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};
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///////////////////////////////////////////////////////////////////////////
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template<typename Char, typename Traits, typename Expr
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, typename CopyExpr, typename CopyAttr>
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inline std::basic_istream<Char, Traits> &
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operator>>(std::basic_istream<Char, Traits> &is,
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match_manip<Expr, CopyExpr, CopyAttr> const& fm)
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{
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typedef spirit::basic_istream_iterator<Char, Traits> input_iterator;
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input_iterator f(is);
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input_iterator l;
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if (!qi::parse(f, l, fm.expr))
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{
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is.setstate(std::basic_istream<Char, Traits>::failbit);
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}
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return is;
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}
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///////////////////////////////////////////////////////////////////////////
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template<typename Char, typename Traits, typename Expr
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, typename CopyExpr, typename CopyAttr
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, typename Attribute>
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inline std::basic_istream<Char, Traits> &
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operator>>(std::basic_istream<Char, Traits> &is,
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match_manip<Expr, CopyExpr, CopyAttr, unused_type, Attribute> const& fm)
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{
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typedef spirit::basic_istream_iterator<Char, Traits> input_iterator;
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input_iterator f(is);
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input_iterator l;
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if (!qi::parse(f, l, fm.expr, fm.attr))
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{
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is.setstate(std::basic_istream<Char, Traits>::failbit);
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}
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return is;
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}
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///////////////////////////////////////////////////////////////////////////
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template<typename Char, typename Traits, typename Expr
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, typename CopyExpr, typename CopyAttr
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, typename Skipper>
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inline std::basic_istream<Char, Traits> &
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operator>>(std::basic_istream<Char, Traits> &is,
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match_manip<Expr, CopyExpr, CopyAttr, Skipper> const& fm)
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{
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typedef spirit::basic_istream_iterator<Char, Traits> input_iterator;
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input_iterator f(is);
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input_iterator l;
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if (!qi::phrase_parse(
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f, l, fm.expr, fm.skipper, fm.post_skip))
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{
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is.setstate(std::basic_istream<Char, Traits>::failbit);
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}
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return is;
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}
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///////////////////////////////////////////////////////////////////////////
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template<typename Char, typename Traits, typename Expr
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, typename CopyExpr, typename CopyAttr
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, typename Attribute, typename Skipper
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>
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inline std::basic_istream<Char, Traits> &
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operator>>(
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std::basic_istream<Char, Traits> &is,
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match_manip<Expr, CopyExpr, CopyAttr, Attribute, Skipper> const& fm)
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{
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typedef spirit::basic_istream_iterator<Char, Traits> input_iterator;
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input_iterator f(is);
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input_iterator l;
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if (!qi::phrase_parse(
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f, l, fm.expr, fm.skipper, fm.post_skip, fm.attr))
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{
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is.setstate(std::basic_istream<Char, Traits>::failbit);
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}
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return is;
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}
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}}}}
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#endif
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