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103 lines
3.5 KiB
C++
103 lines
3.5 KiB
C++
/*=============================================================================
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Copyright (c) 2001-2015 Joel de Guzman
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Copyright (c) 2025 Nana Sakisaka
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Distributed under the Boost Software License, Version 1.0. (See accompanying
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file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
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=============================================================================*/
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#include "test.hpp"
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#include <boost/spirit/x4/rule.hpp>
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#include <boost/spirit/x4/char/char.hpp>
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#include <boost/spirit/x4/char/char_class.hpp>
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#include <boost/spirit/x4/string/string.hpp>
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#include <boost/spirit/x4/operator/sequence.hpp>
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#include <boost/spirit/x4/debug/annotate_on_success.hpp>
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#include <boost/spirit/x4/debug/error_reporting.hpp>
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#include <boost/spirit/x4/directive/with.hpp>
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#include <iterator>
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#include <string>
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#include <sstream>
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namespace {
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struct error_handler_base
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{
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template<std::forward_iterator It, std::sentinel_for<It> Se, class Context, class Failure>
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void on_error(It const&, Se const&, Context const& ctx, Failure const& x) const
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{
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std::string message = "Error! Expecting: " + x.which() + " here:";
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auto& error_handler = x4::get<x4::contexts::error_handler>(ctx).get();
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error_handler(x.where(), message);
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}
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};
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struct test_inner_rule_class;
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struct test_rule_class : x4::annotate_on_success, error_handler_base {};
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x4::rule<test_inner_rule_class> const test_inner_rule = "\"bar\"";
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x4::rule<test_rule_class> const test_rule;
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auto const test_inner_rule_def = x4::lit("bar");
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auto const test_rule_def = x4::lit("foo") > test_inner_rule > x4::lit("git");
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BOOST_SPIRIT_X4_DEFINE(test_inner_rule)
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BOOST_SPIRIT_X4_DEFINE(test_rule)
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void do_parse(std::string const& line_break)
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{
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std::string const input("foo" + line_break + " foo" + line_break + "git");
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auto const begin = std::begin(input);
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auto const end = std::end(input);
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{
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std::stringstream stream;
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x4::error_handler<std::string::const_iterator> error_handler{begin, end, stream};
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auto const parser = x4::with<x4::contexts::error_handler>(std::ref(error_handler))[test_rule];
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(void)parse(begin, end, parser, x4::standard::space);
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CHECK(stream.str() == "In line 2:\nError! Expecting: \"bar\" here:\n foo\n__^_\n");
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}
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{
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// TODO: cleanup when error_handler is reenterable
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std::stringstream stream;
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x4::error_handler<std::string::const_iterator> error_handler{ begin, end, stream };
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auto const parser = x4::with<x4::contexts::error_handler>(std::ref(error_handler))[test_rule];
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(void)parse(begin, end, parser);
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CHECK(stream.str() == "In line 1:\nError! Expecting: \"bar\" here:\nfoo\n___^_\n");
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}
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}
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void test_line_break_first(std::string const& line_break)
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{
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std::string const input(line_break + "foo foo" + line_break + "git");
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auto const begin = std::begin(input);
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auto const end = std::end(input);
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std::stringstream stream;
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x4::error_handler<std::string::const_iterator> error_handler{begin, end, stream};
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auto const parser = x4::with<x4::contexts::error_handler>(std::ref(error_handler))[test_rule];
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(void)parse(begin, end, parser, x4::space);
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CHECK(stream.str() == "In line 2:\nError! Expecting: \"bar\" here:\nfoo foo\n_____^_\n");
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}
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} // anonymous
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TEST_CASE("error_handler")
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{
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do_parse("\n");
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do_parse("\r");
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do_parse("\r\n");
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test_line_break_first("\n");
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test_line_break_first("\r");
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test_line_break_first("\r\n");
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}
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