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fb47fdc0f1
- Remove BOOST_PARSER_STANDALONE, and make that the default. The bits of Boost that we might use are used automatically when they're available (as discovered via __has_include). - Remove the non-essential uses of Boost from the examples.
49 lines
1.1 KiB
C++
49 lines
1.1 KiB
C++
// Copyright (C) 2020 T. Zachary Laine
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//
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// Distributed under the Boost Software License, Version 1.0. (See
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// accompanying file LICENSE_1_0.txt or copy at
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// http://www.boost.org/LICENSE_1_0.txt)
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//[ rule_intro_example
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#include <boost/parser/parser.hpp>
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#include <deque>
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#include <iostream>
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#include <string>
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namespace bp = boost::parser;
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//[ rule_intro_rule_definition
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//[ rule_intro_rule_definition_rule
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bp::rule<struct doubles, std::vector<double>> doubles = "doubles";
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//]
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//[ rule_intro_rule_definition_rule_def
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auto const doubles_def = bp::double_ >> *(',' >> bp::double_);
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//]
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//[ rule_intro_rule_definition_macro
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BOOST_PARSER_DEFINE_RULE(doubles);
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//]
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//]
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int main()
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{
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std::cout << "Please enter a list of doubles, separated by commas. ";
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std::string input;
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std::getline(std::cin, input);
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//[ rule_intro_parse_call
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auto const result = bp::parse(input, doubles, bp::ws);
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//]
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if (result) {
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std::cout << "You entered:\n";
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for (double x : *result) {
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std::cout << x << "\n";
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}
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} else {
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std::cout << "Parse failure.\n";
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}
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}
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//]
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