comparison DEPENDENCIES/generic/include/boost/spirit/home/karma/string/lit.hpp @ 16:2665513ce2d3

Add boost headers

+//  Copyright (c) 2001-2011 Hartmut Kaiser
+//  Copyright (c)      2010 Bryce Lelbach
+//
+//  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_LIT_FEB_22_2007_0534PM)
+#define BOOST_SPIRIT_KARMA_LIT_FEB_22_2007_0534PM
+
+#if defined(_MSC_VER)
+#pragma once
+#endif
+
+#include <boost/spirit/home/support/common_terminals.hpp>
+#include <boost/spirit/home/support/string_traits.hpp>
+#include <boost/spirit/home/support/info.hpp>
+#include <boost/spirit/home/support/char_class.hpp>
+#include <boost/spirit/home/support/container.hpp>
+#include <boost/spirit/home/support/handles_container.hpp>
+#include <boost/spirit/home/support/detail/get_encoding.hpp>
+#include <boost/spirit/home/karma/domain.hpp>
+#include <boost/spirit/home/karma/meta_compiler.hpp>
+#include <boost/spirit/home/karma/delimit_out.hpp>
+#include <boost/spirit/home/karma/auxiliary/lazy.hpp>
+#include <boost/spirit/home/karma/detail/get_casetag.hpp>
+#include <boost/spirit/home/karma/detail/extract_from.hpp>
+#include <boost/spirit/home/karma/detail/string_generate.hpp>
+#include <boost/spirit/home/karma/detail/string_compare.hpp>
+#include <boost/spirit/home/karma/detail/enable_lit.hpp>
+#include <boost/fusion/include/at.hpp>
+#include <boost/fusion/include/vector.hpp>
+#include <boost/fusion/include/cons.hpp>
+#include <boost/mpl/if.hpp>
+#include <boost/mpl/or.hpp>
+#include <boost/mpl/assert.hpp>
+#include <boost/mpl/bool.hpp>
+#include <boost/utility/enable_if.hpp>
+#include <string>
+
+///////////////////////////////////////////////////////////////////////////////
+namespace boost { namespace spirit
+{
+    ///////////////////////////////////////////////////////////////////////////
+    // Enablers
+    ///////////////////////////////////////////////////////////////////////////
+    template <typename CharEncoding>
+    struct use_terminal<karma::domain
+        , tag::char_code<tag::string, CharEncoding> >     // enables string
+      : mpl::true_ {};
+
+    template <typename T>
+    struct use_terminal<karma::domain, T
+      , typename enable_if<traits::is_string<T> >::type>  // enables string literals
+      : mpl::true_ {};
+
+    template <typename CharEncoding, typename A0>
+    struct use_terminal<karma::domain
+      , terminal_ex<
+            tag::char_code<tag::string, CharEncoding>     // enables string(str)
+          , fusion::vector1<A0> >
+    > : traits::is_string<A0> {};
+
+    template <typename CharEncoding>                      // enables string(f)
+    struct use_lazy_terminal<
+        karma::domain
+      , tag::char_code<tag::string, CharEncoding>
+      , 1 /*arity*/
+    > : mpl::true_ {};
+
+    // enables lit(str)
+    template <typename A0>
+    struct use_terminal<karma::domain
+          , terminal_ex<tag::lit, fusion::vector1<A0> >
+          , typename enable_if<traits::is_string<A0> >::type>
+      : mpl::true_ {};
+}} 
+
+///////////////////////////////////////////////////////////////////////////////
+namespace boost { namespace spirit { namespace karma
+{
+#ifndef BOOST_SPIRIT_NO_PREDEFINED_TERMINALS
+    using spirit::lit;
+#endif
+    using spirit::lit_type;
+
+    ///////////////////////////////////////////////////////////////////////////
+    // generate literal strings from a given parameter
+    ///////////////////////////////////////////////////////////////////////////
+    template <typename CharEncoding, typename Tag>
+    struct any_string
+      : primitive_generator<any_string<CharEncoding, Tag> >
+    {
+        typedef typename CharEncoding::char_type char_type;
+        typedef CharEncoding char_encoding;
+
+        template <typename Context, typename Unused = unused_type>
+        struct attribute
+        {
+            typedef std::basic_string<char_type> type;
+        };
+
+        // lit has an attached attribute
+        template <typename OutputIterator, typename Context, typename Delimiter
+          , typename Attribute>
+        static bool
+        generate(OutputIterator& sink, Context& context, Delimiter const& d, 
+            Attribute const& attr)
+        {
+            if (!traits::has_optional_value(attr))
+                return false;
+
+            typedef typename attribute<Context>::type attribute_type;
+            return 
+                karma::detail::string_generate(sink
+                  , traits::extract_from<attribute_type>(attr, context)
+                  , char_encoding(), Tag()) &&
+                karma::delimit_out(sink, d);      // always do post-delimiting
+        }
+
+        // this lit has no attribute attached, it needs to have been
+        // initialized from a direct literal
+        template <typename OutputIterator, typename Context, typename Delimiter>
+        static bool generate(OutputIterator&, Context&, Delimiter const&, 
+            unused_type const&)
+        {
+            // It is not possible (doesn't make sense) to use string without
+            // providing any attribute, as the generator doesn't 'know' what
+            // character to output. The following assertion fires if this
+            // situation is detected in your code.
+            BOOST_SPIRIT_ASSERT_FAIL(OutputIterator, string_not_usable_without_attribute, ());
+            return false;
+        }
+
+        template <typename Context>
+        static info what(Context const& /*context*/)
+        {
+            return info("any-string");
+        }
+    };
+
+    ///////////////////////////////////////////////////////////////////////////
+    // generate literal strings
+    ///////////////////////////////////////////////////////////////////////////
+    template <typename String, typename CharEncoding, typename Tag, bool no_attribute>
+    struct literal_string
+      : primitive_generator<literal_string<String, CharEncoding, Tag, no_attribute> >
+    {
+        typedef CharEncoding char_encoding;
+        typedef typename
+            remove_const<typename traits::char_type_of<String>::type>::type
+        char_type;
+        typedef std::basic_string<char_type> string_type;
+
+        template <typename Context, typename Unused = unused_type>
+        struct attribute
+          : mpl::if_c<no_attribute, unused_type, string_type>
+        {};
+
+        literal_string(typename add_reference<String>::type str)
+          : str_(str)
+        {}
+
+        // A string("...") which additionally has an associated attribute emits
+        // its immediate literal only if it matches the attribute, otherwise
+        // it fails.
+        template <
+            typename OutputIterator, typename Context, typename Delimiter
+          , typename Attribute>
+        bool generate(OutputIterator& sink, Context& context
+          , Delimiter const& d, Attribute const& attr) const
+        {
+            if (!traits::has_optional_value(attr))
+                return false;
+
+            // fail if attribute isn't matched by immediate literal
+            typedef typename attribute<Context>::type attribute_type;
+
+            typedef typename spirit::result_of::extract_from<attribute_type, Attribute>::type
+                extracted_string_type;
+
+            using spirit::traits::get_c_string;
+            if (!detail::string_compare(
+                    get_c_string(
+                        traits::extract_from<attribute_type>(attr, context))
+                  , get_c_string(str_), char_encoding(), Tag()))
+            {
+                return false;
+            }
+            return detail::string_generate(sink, str_, char_encoding(), Tag()) && 
+                   karma::delimit_out(sink, d);      // always do post-delimiting
+        }
+
+        // A string("...") without any associated attribute just emits its 
+        // immediate literal
+        template <typename OutputIterator, typename Context, typename Delimiter>
+        bool generate(OutputIterator& sink, Context&, Delimiter const& d
+          , unused_type) const
+        {
+            return detail::string_generate(sink, str_, char_encoding(), Tag()) && 
+                   karma::delimit_out(sink, d);      // always do post-delimiting
+        }
+
+        template <typename Context>
+        info what(Context const& /*context*/) const
+        {
+            return info("literal-string", str_);
+        }
+
+        string_type str_;
+    };
+
+    ///////////////////////////////////////////////////////////////////////////
+    // Generator generators: make_xxx function (objects)
+    ///////////////////////////////////////////////////////////////////////////
+
+    // string
+    template <typename CharEncoding, typename Modifiers>
+    struct make_primitive<
+        tag::char_code<tag::string, CharEncoding>
+      , Modifiers>
+    {
+        static bool const lower = 
+            has_modifier<Modifiers, tag::char_code_base<tag::lower> >::value;
+        static bool const upper = 
+            has_modifier<Modifiers, tag::char_code_base<tag::upper> >::value;
+
+        typedef any_string<
+            typename spirit::detail::get_encoding_with_case<
+                Modifiers, CharEncoding, lower || upper>::type
+          , typename detail::get_casetag<Modifiers, lower || upper>::type
+        > result_type;
+
+        result_type operator()(unused_type, unused_type) const
+        {
+            return result_type();
+        }
+    };
+
+    // string literal 
+    template <typename T, typename Modifiers>
+    struct make_primitive<T, Modifiers
+      , typename enable_if<traits::is_string<T> >::type>
+    {
+        static bool const lower =
+            has_modifier<Modifiers, tag::char_code_base<tag::lower> >::value;
+
+        static bool const upper =
+            has_modifier<Modifiers, tag::char_code_base<tag::upper> >::value;
+
+        typedef typename add_const<T>::type const_string;
+        typedef literal_string<
+            const_string
+          , typename spirit::detail::get_encoding_with_case<
+                Modifiers, unused_type, lower || upper>::type
+          , typename detail::get_casetag<Modifiers, lower || upper>::type
+          , true
+        > result_type;
+
+        result_type operator()(
+            typename add_reference<const_string>::type str, unused_type) const
+        {
+            return result_type(str);
+        }
+    };
+
+    ///////////////////////////////////////////////////////////////////////////
+    namespace detail
+    {
+        template <typename CharEncoding, typename Modifiers, typename A0
+          , bool no_attribute>
+        struct make_string_direct
+        {
+            static bool const lower = 
+                has_modifier<Modifiers, tag::char_code_base<tag::lower> >::value;
+            static bool const upper = 
+                has_modifier<Modifiers, tag::char_code_base<tag::upper> >::value;
+
+            typedef typename add_const<A0>::type const_string;
+            typedef literal_string<
+                const_string
+              , typename spirit::detail::get_encoding_with_case<
+                    Modifiers, unused_type, lower || upper>::type
+              , typename detail::get_casetag<Modifiers, lower || upper>::type
+              , no_attribute
+            > result_type;
+
+            template <typename Terminal>
+            result_type operator()(Terminal const& term, unused_type) const
+            {
+                return result_type(fusion::at_c<0>(term.args));
+            }
+        };
+    }
+
+    // string("..."), lit("...")
+    template <typename CharEncoding, typename Modifiers, typename A0>
+    struct make_primitive<
+            terminal_ex<
+                tag::char_code<tag::string, CharEncoding>
+              , fusion::vector1<A0> >
+          , Modifiers>
+      : detail::make_string_direct<CharEncoding, Modifiers, A0, false>
+    {};
+
+    template <typename Modifiers, typename A0>
+    struct make_primitive<
+            terminal_ex<tag::lit, fusion::vector1<A0> >
+          , Modifiers
+          , typename enable_if<traits::is_string<A0> >::type>
+      : detail::make_string_direct<
+            typename traits::char_encoding_from_char<
+                typename traits::char_type_of<A0>::type>::type
+          , Modifiers, A0, true>
+    {};
+}}}   // namespace boost::spirit::karma
+
+namespace boost { namespace spirit { namespace traits
+{
+    ///////////////////////////////////////////////////////////////////////////
+    template <typename CharEncoding, typename Tag, typename Attribute
+            , typename Context, typename Iterator>
+    struct handles_container<karma::any_string<CharEncoding, Tag>, Attribute
+      , Context, Iterator>
+      : mpl::false_ {};
+
+    template <typename String, typename CharEncoding, typename Tag
+            , bool no_attribute, typename Attribute, typename Context
+            , typename Iterator>
+    struct handles_container<karma::literal_string<String, CharEncoding, Tag
+      , no_attribute>, Attribute, Context, Iterator>
+      : mpl::false_ {};
+}}}
+
+#endif