| /*============================================================================= |
| Copyright (c) 2001-2014 Joel de Guzman |
| |
| 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_X3_CALC8_EXPRESSION_DEF_HPP) |
| #define BOOST_SPIRIT_X3_CALC8_EXPRESSION_DEF_HPP |
| |
| #include <boost/spirit/home/x3.hpp> |
| #include "ast.hpp" |
| #include "ast_adapted.hpp" |
| #include "expression.hpp" |
| #include "common.hpp" |
| #include "error_handler.hpp" |
| #include "annotation.hpp" |
| |
| namespace client { namespace parser |
| { |
| using x3::uint_; |
| using x3::char_; |
| using x3::raw; |
| using x3::lexeme; |
| using namespace x3::ascii; |
| |
| struct expression_class; |
| struct additive_expr_class; |
| struct multiplicative_expr_class; |
| struct unary_expr_class; |
| struct primary_expr_class; |
| |
| typedef x3::rule<expression_class, ast::expression> expression_type; |
| typedef x3::rule<additive_expr_class, ast::expression> additive_expr_type; |
| typedef x3::rule<multiplicative_expr_class, ast::expression> multiplicative_expr_type; |
| typedef x3::rule<unary_expr_class, ast::operand> unary_expr_type; |
| typedef x3::rule<primary_expr_class, ast::operand> primary_expr_type; |
| |
| expression_type const expression = "expression"; |
| additive_expr_type const additive_expr = "additive_expr"; |
| multiplicative_expr_type const multiplicative_expr = "multiplicative_expr"; |
| unary_expr_type unary_expr = "unary_expr"; |
| primary_expr_type primary_expr = "primary_expr"; |
| |
| auto const additive_expr_def = |
| multiplicative_expr |
| >> *( (char_('+') > multiplicative_expr) |
| | (char_('-') > multiplicative_expr) |
| ) |
| ; |
| |
| auto const multiplicative_expr_def = |
| unary_expr |
| >> *( (char_('*') > unary_expr) |
| | (char_('/') > unary_expr) |
| ) |
| ; |
| |
| auto const unary_expr_def = |
| primary_expr |
| | (char_('-') > primary_expr) |
| | (char_('+') > primary_expr) |
| ; |
| |
| auto const primary_expr_def = |
| uint_ |
| | identifier |
| | '(' > expression > ')' |
| ; |
| |
| BOOST_SPIRIT_DEFINE( |
| expression = additive_expr |
| , additive_expr = additive_expr_def |
| , multiplicative_expr = multiplicative_expr_def |
| , unary_expr = unary_expr_def |
| , primary_expr = primary_expr_def |
| ); |
| |
| struct unary_expr_class : annotation_base {}; |
| struct primary_expr_class : annotation_base {}; |
| |
| }} |
| |
| namespace client |
| { |
| parser::expression_type const& expression() |
| { |
| return parser::expression; |
| } |
| } |
| |
| #endif |