| // Copyright (c) 2001-2010 Hartmut Kaiser |
| // |
| // Distributed under the Boost Software License, Version 1.0. (See accompanying |
| // file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt) |
| |
| #if !defined(BOOST_SPIRIT_KARMA_FORMAT_MANIP_MAY_03_2007_1424PM) |
| #define BOOST_SPIRIT_KARMA_FORMAT_MANIP_MAY_03_2007_1424PM |
| |
| #if defined(_MSC_VER) |
| #pragma once |
| #endif |
| |
| #include <iterator> |
| #include <string> |
| #include <boost/spirit/home/karma/generate.hpp> |
| #include <boost/spirit/home/support/iterators/ostream_iterator.hpp> |
| #include <boost/mpl/bool.hpp> |
| |
| /////////////////////////////////////////////////////////////////////////////// |
| namespace boost { namespace spirit { namespace karma { namespace detail |
| { |
| /////////////////////////////////////////////////////////////////////////// |
| template <typename Expr |
| , typename CopyExpr = mpl::false_, typename CopyAttr = mpl::false_ |
| , typename Delimiter = unused_type, typename Attribute = unused_type> |
| struct format_manip |
| { |
| // This assertion makes sure we don't hit the only code path which is |
| // not implemented (because it isn't needed), where both, the |
| // expression and the attribute need to be held as a copy. |
| BOOST_SPIRIT_ASSERT_MSG(!CopyExpr::value || !CopyAttr::value |
| , error_invalid_should_not_happen, ()); |
| |
| format_manip(Expr const& xpr, Delimiter const& d, Attribute const& a) |
| : expr(xpr), delim(d), pre(delimit_flag::dont_predelimit), attr(a) {} |
| |
| format_manip(Expr const& xpr, Delimiter const& d |
| , BOOST_SCOPED_ENUM(delimit_flag) pre_delimit, Attribute const& a) |
| : expr(xpr), delim(d), pre(pre_delimit), attr(a) {} |
| |
| Expr const& expr; |
| Delimiter const& delim; |
| BOOST_SCOPED_ENUM(delimit_flag) const pre; |
| Attribute const& attr; |
| |
| private: |
| // silence MSVC warning C4512: assignment operator could not be generated |
| format_manip& operator= (format_manip const&); |
| }; |
| |
| template <typename Expr, typename Delimiter, typename Attribute> |
| struct format_manip<Expr, mpl::false_, mpl::true_, Delimiter, Attribute> |
| { |
| format_manip(Expr const& xpr, Delimiter const& d, Attribute const& a) |
| : expr(xpr), delim(d), pre(delimit_flag::dont_predelimit), attr(a) {} |
| |
| format_manip(Expr const& xpr, Delimiter const& d |
| , BOOST_SCOPED_ENUM(delimit_flag) pre_delimit, Attribute const& a) |
| : expr(xpr), delim(d), pre(pre_delimit), attr(a) {} |
| |
| Expr const& expr; |
| Delimiter const& delim; |
| BOOST_SCOPED_ENUM(delimit_flag) const pre; |
| Attribute attr; |
| |
| private: |
| // silence MSVC warning C4512: assignment operator could not be generated |
| format_manip& operator= (format_manip const&); |
| }; |
| |
| template <typename Expr, typename Delimiter, typename Attribute> |
| struct format_manip<Expr, mpl::true_, mpl::false_, Delimiter, Attribute> |
| { |
| format_manip(Expr const& xpr, Delimiter const& d, Attribute const& a) |
| : expr(xpr), delim(d), pre(delimit_flag::dont_predelimit), attr(a) {} |
| |
| format_manip(Expr const& xpr, Delimiter const& d |
| , BOOST_SCOPED_ENUM(delimit_flag) pre_delimit, Attribute const& a) |
| : expr(xpr), delim(d), pre(pre_delimit), attr(a) {} |
| |
| Expr expr; |
| Delimiter const& delim; |
| BOOST_SCOPED_ENUM(delimit_flag) const pre; |
| Attribute const& attr; |
| |
| private: |
| // silence MSVC warning C4512: assignment operator could not be generated |
| format_manip& operator= (format_manip const&); |
| }; |
| |
| /////////////////////////////////////////////////////////////////////////// |
| template <typename Expr, typename Enable = void> |
| struct format |
| { |
| // Report invalid expression error as early as possible. |
| // If you got an error_invalid_expression error message here, |
| // then the expression (Expr) is not a valid spirit karma expression. |
| // Did you intend to use the auto_ facilities while forgetting to |
| // #include <boost/spirit/include/karma_format_auto.hpp>? |
| BOOST_SPIRIT_ASSERT_MATCH(karma::domain, Expr); |
| }; |
| |
| template <typename Expr> |
| struct format<Expr |
| , typename enable_if<traits::matches<karma::domain, Expr> >::type> |
| { |
| typedef format_manip<Expr> type; |
| |
| static type call(Expr const& expr) |
| { |
| return type(expr, unused, unused); |
| } |
| }; |
| |
| /////////////////////////////////////////////////////////////////////////// |
| template <typename Expr, typename Delimiter, typename Enable = void> |
| struct format_delimited |
| { |
| // Report invalid expression error as early as possible. |
| // If you got an error_invalid_expression error message here, |
| // then the expression (Expr) is not a valid spirit karma expression. |
| // Did you intend to use the auto_ facilities while forgetting to |
| // #include <boost/spirit/include/karma_format_auto.hpp>? |
| BOOST_SPIRIT_ASSERT_MATCH(karma::domain, Expr); |
| }; |
| |
| template <typename Expr, typename Delimiter> |
| struct format_delimited<Expr, Delimiter |
| , typename enable_if<traits::matches<karma::domain, Expr> >::type> |
| { |
| typedef format_manip<Expr, mpl::false_, mpl::false_, Delimiter> type; |
| |
| static type call( |
| Expr const& expr |
| , Delimiter const& delimiter |
| , BOOST_SCOPED_ENUM(delimit_flag) pre_delimit) |
| { |
| // Report invalid expression error as early as possible. |
| // If you got an error_invalid_expression error message here, |
| // then the delimiter is not a valid spirit karma expression. |
| BOOST_SPIRIT_ASSERT_MATCH(karma::domain, Delimiter); |
| return type(expr, delimiter, pre_delimit, unused); |
| } |
| }; |
| |
| /////////////////////////////////////////////////////////////////////////// |
| template<typename Char, typename Traits, typename Expr |
| , typename CopyExpr, typename CopyAttr> |
| inline std::basic_ostream<Char, Traits> & |
| operator<< (std::basic_ostream<Char, Traits> &os |
| , format_manip<Expr, CopyExpr, CopyAttr> const& fm) |
| { |
| karma::ostream_iterator<Char, Char, Traits> sink(os); |
| if (!karma::generate (sink, fm.expr)) |
| { |
| os.setstate(std::ios_base::failbit); |
| } |
| return os; |
| } |
| |
| /////////////////////////////////////////////////////////////////////////// |
| template<typename Char, typename Traits, typename Expr |
| , typename CopyExpr, typename CopyAttr, typename Attribute> |
| inline std::basic_ostream<Char, Traits> & |
| operator<< (std::basic_ostream<Char, Traits> &os |
| , format_manip<Expr, CopyExpr, CopyAttr, unused_type, Attribute> const& fm) |
| { |
| karma::ostream_iterator<Char, Char, Traits> sink(os); |
| if (!karma::generate(sink, fm.expr, fm.attr)) |
| { |
| os.setstate(std::ios_base::failbit); |
| } |
| return os; |
| } |
| |
| template<typename Char, typename Traits, typename Expr |
| , typename CopyExpr, typename CopyAttr, typename Delimiter> |
| inline std::basic_ostream<Char, Traits> & |
| operator<< (std::basic_ostream<Char, Traits> &os |
| , format_manip<Expr, CopyExpr, CopyAttr, Delimiter> const& fm) |
| { |
| karma::ostream_iterator<Char, Char, Traits> sink(os); |
| if (!karma::generate_delimited(sink, fm.expr, fm.delim, fm.pre)) |
| { |
| os.setstate(std::ios_base::failbit); |
| } |
| return os; |
| } |
| |
| /////////////////////////////////////////////////////////////////////////// |
| template<typename Char, typename Traits, typename Expr |
| , typename CopyExpr, typename CopyAttr, typename Delimiter |
| , typename Attribute> |
| inline std::basic_ostream<Char, Traits> & |
| operator<< (std::basic_ostream<Char, Traits> &os |
| , format_manip<Expr, CopyExpr, CopyAttr, Delimiter, Attribute> const& fm) |
| { |
| karma::ostream_iterator<Char, Char, Traits> sink(os); |
| if (!karma::generate_delimited(sink, fm.expr, fm.delim, fm.pre, fm.attr)) |
| { |
| os.setstate(std::ios_base::failbit); |
| } |
| return os; |
| } |
| }}}} |
| |
| #endif |