63 lines
1.4 KiB
C++
63 lines
1.4 KiB
C++
#ifndef BOOST_METAPARSE_GETTING_STARTED_11_HPP
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#define BOOST_METAPARSE_GETTING_STARTED_11_HPP
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// Automatically generated header file
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// Definitions before section 10
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#include "10.hpp"
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// Definitions of section 10
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using lparen_token = token<lit_c<'('>>;
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using rparen_token = token<lit_c<')'>>;
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using plus_exp1 =
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foldl_start_with_parser<
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sequence<one_of<plus_token, minus_token>, mult_exp4>,
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mult_exp4,
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boost::mpl::quote2<binary_op>
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>;
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using paren_exp1 = sequence<lparen_token, plus_exp1, rparen_token>;
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#include <boost/metaparse/middle_of.hpp>
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using paren_exp2 = middle_of<lparen_token, plus_exp1, rparen_token>;
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using primary_exp1 = one_of<int_token, paren_exp2>;
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struct plus_exp2;
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using paren_exp3 = middle_of<lparen_token, plus_exp2, rparen_token>;
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using primary_exp2 = one_of<int_token, paren_exp2>;
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using unary_exp2 =
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foldr_start_with_parser<
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minus_token,
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primary_exp2,
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boost::mpl::lambda<boost::mpl::negate<boost::mpl::_1>>::type
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>;
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using mult_exp5 =
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foldl_start_with_parser<
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sequence<one_of<times_token, divides_token>, unary_exp2>,
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unary_exp2,
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boost::mpl::quote2<binary_op>
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>;
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struct plus_exp2 :
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foldl_start_with_parser<
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sequence<one_of<plus_token, minus_token>, mult_exp5>,
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mult_exp5,
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boost::mpl::quote2<binary_op>
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> {};
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using exp_parser19 = build_parser<plus_exp2>;
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// query:
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// exp_parser19::apply<BOOST_METAPARSE_STRING("(1 + 2) * 3")>::type
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#endif
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