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6db68bc7f7
The test led to the following error before: github_issues.cpp(522): error C3615: constexpr function 'boost::parser::switch_' cannot result in a constant expression
579 lines
16 KiB
C++
579 lines
16 KiB
C++
/**
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* Copyright (C) 2024 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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*/
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#include <boost/parser/parser.hpp>
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#include <boost/parser/transcode_view.hpp>
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#if __has_include(<boost/optional/optional.hpp>)
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#define TEST_BOOST_OPTIONAL 1
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#include <boost/optional/optional.hpp>
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#else
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#define TEST_BOOST_OPTIONAL 0
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#endif
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#include <set>
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#include <boost/core/lightweight_test.hpp>
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using namespace boost::parser;
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void github_issue_36()
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{
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namespace bp = boost::parser;
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auto id = bp::lexeme[+bp::char_(
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"ABCDEFGHIJKLMNOPQRSTUVWXYZ_abcdefghijklmnopqrstuvwxyz0123456789")];
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auto ids = +id;
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std::string str;
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std::vector<std::string> vec;
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bp::parse("id1", id, bp::ws, str); // (1)
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BOOST_TEST(str == "id1");
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str.clear();
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bp::parse("id1 id2", ids, bp::ws, vec); // (2)
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BOOST_TEST(vec == std::vector<std::string>({"id1", "id2"}));
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// Intentionally ill-formed.
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// bp::parse("i1 i2", ids, bp::ws, str); // (3)
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}
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namespace issue_50 {
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struct X
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{
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char a;
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int b;
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bool operator<(X rhs) const { return a < rhs.a; }
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};
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struct Y
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{
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std::vector<X> x;
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int c;
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};
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struct Y2
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{
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std::set<X> x;
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int c;
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};
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static_assert(
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boost::parser::detail::is_struct_compatible<
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Y,
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boost::parser::
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tuple<std::vector<boost::parser::tuple<char, int>>, int>>());
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static_assert(
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boost::parser::detail::is_struct_compatible<
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Y2,
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boost::parser::
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tuple<std::vector<boost::parser::tuple<char, int>>, int>>());
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}
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void github_issue_50()
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{
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using namespace issue_50;
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namespace bp = boost::parser;
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{
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auto parse_x = bp::char_ >> bp::int_;
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auto parse_y = +parse_x >> bp::int_;
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Y y;
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auto b = bp::parse("d 3 4", parse_y, bp::ws, y);
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BOOST_TEST(b);
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BOOST_TEST(y.x[0].a == 'd');
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BOOST_TEST(y.x[0].b == 3);
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BOOST_TEST(y.c == 4);
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}
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{
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auto parse_x = bp::char_ >> bp::int_;
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auto parse_y = +parse_x >> bp::int_;
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Y2 y;
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auto b = bp::parse("d 3 4", parse_y, bp::ws, y);
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BOOST_TEST(b);
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BOOST_TEST(y.x.begin()->a == 'd');
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BOOST_TEST(y.x.begin()->b == 3);
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BOOST_TEST(y.c == 4);
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}
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}
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namespace issue_52 {
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struct X
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{
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char a;
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int b;
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};
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struct Y
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{
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std::vector<X> x;
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int c;
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};
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struct Z
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{
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std::vector<Y> y;
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int d;
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};
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struct W
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{
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std::vector<Z> z;
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int e;
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};
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}
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void github_issue_52()
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{
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using namespace issue_52;
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namespace bp = boost::parser;
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auto parse_x = bp::char_ >> bp::int_;
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auto parse_y = +parse_x >> bp::int_;
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auto parse_z = +parse_y >> bp::char_;
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auto parse_w = +parse_z >> bp::int_;
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{
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Z z;
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auto b = bp::parse("d 2 3 c", parse_z, bp::ws, z);
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BOOST_TEST(b);
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BOOST_TEST(z.y[0].x[0].a == 'd');
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BOOST_TEST(z.y[0].x[0].b == 2);
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BOOST_TEST(z.y[0].c == 3);
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BOOST_TEST(z.d == 'c');
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}
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{
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W w;
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auto b = bp::parse("d 2 3 c 4", parse_w, bp::ws, w);
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BOOST_TEST(b);
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BOOST_TEST(w.z[0].y[0].x[0].a == 'd');
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BOOST_TEST(w.z[0].y[0].x[0].b == 2);
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BOOST_TEST(w.z[0].y[0].c == 3);
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BOOST_TEST(w.z[0].d == 'c');
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BOOST_TEST(w.e == 4);
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}
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}
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void github_issue_78()
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{
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namespace bp = boost::parser;
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std::vector<int> result;
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auto b = bp::parse("3 4 c", +bp::int_, bp::ws, result);
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BOOST_TEST(!b);
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BOOST_TEST(result.empty());
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}
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namespace issue_90 { namespace parser {
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const auto string =
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('"' >> boost::parser::lexeme[*(boost::parser::char_ - '"')]) > '"';
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const auto specifier = string > ':' > string;
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}}
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void github_issue_90()
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{
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using namespace issue_90;
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namespace bp = boost::parser;
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std::string input = R"( "dd" : "2" )";
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std::pair<std::string, std::string> result;
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auto b = bp::parse(input, parser::specifier, bp::ws, result);
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BOOST_TEST(b);
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BOOST_TEST(result.first == "dd");
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BOOST_TEST(result.second == "2");
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}
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namespace github_issue_125_ {
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namespace bp = boost::parser;
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constexpr bp::
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rule<struct replacement_field_rule, std::optional<unsigned short>>
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replacement_field = "replacement_field";
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constexpr auto replacement_field_def = bp::lit('{') >> -bp::ushort_;
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BOOST_PARSER_DEFINE_RULES(replacement_field);
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}
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void github_issue_125()
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{
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namespace bp = boost::parser;
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using namespace github_issue_125_;
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unsigned short integer_found = 99;
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auto print_repl_field = [&](auto & ctx) {
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const std::optional<unsigned short> & val = bp::_attr(ctx);
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if (val)
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integer_found = *val;
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else
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integer_found = 77;
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};
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{
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integer_found = 99;
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auto result = bp::parse("{9", replacement_field[print_repl_field]);
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BOOST_TEST(result);
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BOOST_TEST(integer_found == 9);
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}
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{
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integer_found = 99;
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auto result = bp::parse("{", replacement_field[print_repl_field]);
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BOOST_TEST(result);
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BOOST_TEST(integer_found == 77);
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}
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}
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void github_issue_209()
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{
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namespace bp = boost::parser;
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BOOST_TEST(std::is_sorted(
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std::begin(bp::detail::char_set<detail::punct_chars>::chars),
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std::end(bp::detail::char_set<detail::punct_chars>::chars)));
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BOOST_TEST(std::is_sorted(
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std::begin(bp::detail::char_set<detail::symb_chars>::chars),
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std::end(bp::detail::char_set<detail::symb_chars>::chars)));
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BOOST_TEST(std::is_sorted(
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std::begin(bp::detail::char_set<detail::lower_case_chars>::chars),
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std::end(bp::detail::char_set<detail::lower_case_chars>::chars)));
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BOOST_TEST(std::is_sorted(
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std::begin(bp::detail::char_set<detail::upper_case_chars>::chars),
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std::end(bp::detail::char_set<detail::upper_case_chars>::chars)));
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}
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void github_issue_223()
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{
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namespace bp = boost::parser;
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// failing case
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{
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std::vector<char> v;
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const auto parser = *('x' | bp::char_('y'));
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bp::parse("xy", parser, bp::ws, v);
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BOOST_TEST(v.size() == 1);
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BOOST_TEST(v == std::vector<char>({'y'}));
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// the assert fails since there are two elements in the vector: '\0'
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// and 'y'. Seems pretty surprising to me
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}
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// working case
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{
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const auto parser = *('x' | bp::char_('y'));
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const auto result = bp::parse("xy", parser, bp::ws);
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BOOST_TEST(result->size() == 1);
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BOOST_TEST(*(*result)[0] == 'y');
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// success, the vector has only one 'y' element
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}
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}
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namespace github_issue_248_ {
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namespace bp = boost::parser;
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static constexpr bp::rule<struct symbol, int> symbol = "//";
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static constexpr bp::rule<struct vector, std::vector<int>> list =
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"<int>(,<int>)*";
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static constexpr bp::rule<struct working, std::vector<int>> working =
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"working";
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static constexpr bp::rule<struct failing, std::vector<int>> failing =
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"failing";
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static auto const symbol_def = bp::symbols<int>{{"//", 0}};
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static constexpr auto list_def = bp::int_ % ',';
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static constexpr auto working_def = -symbol >> (bp::int_ % ',');
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static constexpr auto failing_def = -symbol >> list;
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BOOST_PARSER_DEFINE_RULES(symbol, list, working, failing);
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}
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void github_issue_248()
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{
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namespace bp = boost::parser;
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using namespace github_issue_248_;
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{
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auto const result = bp::parse("//1,2,3", working, bp::ws);
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auto const expected = std::vector<int>{0, 1, 2, 3};
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BOOST_TEST(result.has_value());
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bool const equal = std::equal(
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result->begin(), result->end(), expected.begin(), expected.end());
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BOOST_TEST(equal);
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if (!equal) {
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std::cout << "contents of *result:\n";
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for (auto x : *result) {
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std::cout << x << '\n';
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}
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std::cout << '\n';
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}
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}
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{
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auto const result = bp::parse("//1,2,3", failing, bp::ws);
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auto const expected = std::vector<int>{0, 1, 2, 3};
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BOOST_TEST(result.has_value());
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bool const equal = std::equal(
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result->begin(), result->end(), expected.begin(), expected.end());
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BOOST_TEST(equal);
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if (!equal) {
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std::cout << "contents of *result:\n";
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for (auto x : *result) {
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std::cout << x << '\n';
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}
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std::cout << '\n';
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}
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}
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}
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#if BOOST_PARSER_USE_CONCEPTS
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namespace github_issue_268_ {
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namespace bp = boost::parser;
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constexpr bp::rule<struct name, std::string_view> name = "name";
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auto name_def = bp::string_view[bp::lexeme[+(
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bp::lower | bp::upper | bp::digit | bp::char_("_"))]];
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BOOST_PARSER_DEFINE_RULES(name)
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constexpr bp::rule<struct qd_vec, std::vector<double>> qd_vec = "qd_vec";
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auto qd_vec_def = bp::lit("\"") >>
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bp::double_ %
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(bp::lit(",") |
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(bp::lit("\"") >> bp::lit(",") >> bp::lit("\""))) >>
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bp::lit('\"');
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BOOST_PARSER_DEFINE_RULES(qd_vec)
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struct lu_table_template_1
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{
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std::vector<double> index_1;
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std::string_view variable_1;
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};
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constexpr boost::parser::
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rule<struct lu_table_template_1_tag, lu_table_template_1>
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lu_table_template_1_rule = "lu_table_template_1";
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auto lu_table_template_1_rule_def = (bp::lit("index_1") >> '(' >> qd_vec >>
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')' >> ';') >>
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(bp::lit("variable_1") >> ':' >> name >>
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';');
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BOOST_PARSER_DEFINE_RULES(lu_table_template_1_rule)
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constexpr boost::parser::
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rule<struct lu_table_template_1_permut_tag, lu_table_template_1>
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lu_table_template_1_permut_rule = "lu_table_template_1";
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auto lu_table_template_1_permut_rule_def =
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(bp::lit("index_1") >> '(' >> qd_vec >> ')' >> ';') ||
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(bp::lit("variable_1") >> ':' >> name >> ';');
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BOOST_PARSER_DEFINE_RULES(lu_table_template_1_permut_rule)
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}
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#endif
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void github_issue_268()
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{
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#if BOOST_PARSER_USE_CONCEPTS
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namespace bp = boost::parser;
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using namespace github_issue_268_;
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std::string inputstring = "index_1 ( \"1\" ) ; variable_1 : bier;";
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auto const def_result = bp::parse(
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inputstring, lu_table_template_1_rule_def, bp::blank, bp::trace::off);
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std::cout << "seq_parser generates this type:\n"
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<< typeid(def_result.value()).name() << std::endl;
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BOOST_TEST(def_result);
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auto const permut_def_result = bp::parse(
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inputstring,
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lu_table_template_1_permut_rule_def,
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bp::blank,
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bp::trace::off);
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std::cout << "permut_parser generates this type:\n"
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<< typeid(permut_def_result.value()).name() << std::endl;
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BOOST_TEST(permut_def_result);
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auto const result = bp::parse(
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inputstring, lu_table_template_1_rule, bp::blank, bp::trace::off);
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std::cout << "seq_parser in rule generates this type:\n"
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<< typeid(result.value()).name() << std::endl;
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BOOST_TEST(result);
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auto const permut_result = bp::parse(
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inputstring,
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lu_table_template_1_permut_rule,
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bp::blank,
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bp::trace::off);
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std::cout << "permut_parser generates this type:\n"
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<< typeid(permut_result.value()).name() << std::endl;
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BOOST_TEST(permut_result);
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#endif
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}
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void github_issue_279()
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{
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namespace bp = boost::parser;
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{
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constexpr auto condition_clause =
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bp::lit(U"while") > bp::lit(U"someexpression") >> bp::attr(true);
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constexpr auto do_statement =
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bp::lexeme[bp::lit(U"do") >> &bp::ws] > -condition_clause > bp::eol;
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auto const result =
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bp::parse(U"do\n", do_statement, bp::blank, bp::trace::off);
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BOOST_TEST(result);
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std::optional<bool> const & condition = result.value();
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BOOST_TEST(!condition.has_value());
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}
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{
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constexpr auto condition_clause =
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bp::lit(U"while") > bp::lit(U"someexpression") >> bp::attr(true);
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constexpr auto do_statement_reverse =
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-condition_clause > bp::lexeme[bp::lit(U"do") >> &bp::ws] > bp::eol;
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auto const result =
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bp::parse(U"do\n", do_statement_reverse, bp::blank, bp::trace::off);
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BOOST_TEST(result);
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std::optional<bool> const & condition = result.value();
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BOOST_TEST(!condition.has_value());
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}
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}
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namespace github_issue_285_ {
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namespace bp = boost::parser;
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struct Content
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{
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~Content()
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{
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int setbreakpointhere = 0;
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(void)setbreakpointhere;
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}
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};
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constexpr bp::rule<struct content_tag, std::shared_ptr<Content>> content =
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"content";
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constexpr auto content_action = [](auto & ctx) {
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std::shared_ptr<Content> & result = _val(ctx);
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result = std::make_shared<Content>();
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};
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constexpr auto content_def =
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(bp::lit(U"content") >> bp::eol)[content_action];
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BOOST_PARSER_DEFINE_RULES(content);
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}
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void github_issue_285()
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{
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using namespace github_issue_285_;
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namespace bp = boost::parser;
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constexpr auto prolog = bp::lit(U"prolog") >> bp::eol;
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constexpr auto epilog =
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bp::no_case[bp::lexeme[bp::lit(U"epi") >> bp::lit(U"log")]] >> bp::eol;
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constexpr auto full_parser = prolog >> content >> epilog;
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std::string teststring =
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"prolog\n"
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"content\n"
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"epilog\n";
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// "content" produces a shared_ptr with the result.
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// The "epilog" parser must not delete the result.
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auto const result = bp::parse(teststring, full_parser, bp::blank);
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BOOST_TEST(result);
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BOOST_TEST(result.value().get() != nullptr);
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}
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void github_pr_290()
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{
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namespace bp = boost::parser;
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auto const pTest = bp::lit("TEST:") > -bp::quoted_string;
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auto result = bp::parse("TEST: \"foo\"", pTest, bp::blank);
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BOOST_TEST(result);
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BOOST_TEST(*result == "foo");
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}
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namespace github_pr_297_ {
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namespace bp = boost::parser;
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constexpr auto bar_required_f = [](auto& ctx) -> bool {
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const bool& argument = bp::_p<0>(ctx);
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return argument;
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};
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constexpr bp::rule<struct foobar_parser_tag> foobar_parser = "foobar_parser";
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constexpr auto foobar_parser_def =
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bp::lit("foo")
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|
>> bp::switch_(bar_required_f)
|
|
(true, bp::lit("bar"))
|
|
(false, -bp::lit("bar"));
|
|
BOOST_PARSER_DEFINE_RULES(foobar_parser);
|
|
}
|
|
|
|
void github_pr_297()
|
|
{
|
|
namespace bp = boost::parser;
|
|
using namespace github_pr_297_;
|
|
|
|
{
|
|
const bool bar_required = true;
|
|
const bool result =
|
|
bp::parse("foo bar", foobar_parser.with(bar_required), bp::blank);
|
|
BOOST_TEST(result);
|
|
}
|
|
{
|
|
const bool bar_required = true;
|
|
const bool result =
|
|
bp::parse("foo", foobar_parser.with(bar_required), bp::blank);
|
|
BOOST_TEST(!result);
|
|
}
|
|
{
|
|
const bool bar_required = false;
|
|
const bool result =
|
|
bp::parse("foo bar", foobar_parser.with(bar_required), bp::blank);
|
|
BOOST_TEST(result);
|
|
}
|
|
{
|
|
const bool bar_required = false;
|
|
const bool result =
|
|
bp::parse("foo", foobar_parser.with(bar_required), bp::blank);
|
|
BOOST_TEST(result);
|
|
}
|
|
}
|
|
|
|
int main()
|
|
{
|
|
github_issue_36();
|
|
github_issue_50();
|
|
github_issue_52();
|
|
github_issue_78();
|
|
github_issue_90();
|
|
github_issue_125();
|
|
github_issue_209();
|
|
github_issue_223();
|
|
github_issue_248();
|
|
github_issue_268();
|
|
github_issue_279();
|
|
github_issue_285();
|
|
github_pr_290();
|
|
github_pr_297();
|
|
return boost::report_errors();
|
|
}
|