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parser/test/parser.cpp
Jannik Glückert 5864eee3be fix CI clang warnings in tests
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/**
* Copyright (C) 2018 T. Zachary Laine
*
* 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)
*/
#include <boost/parser/parser.hpp>
#include <boost/parser/transcode_view.hpp>
#if __has_include(<boost/optional/optional.hpp>)
#define TEST_BOOST_OPTIONAL 1
#include <boost/optional/optional.hpp>
#else
#define TEST_BOOST_OPTIONAL 0
#endif
#include <boost/core/lightweight_test.hpp>
using namespace boost::parser;
#if TEST_BOOST_OPTIONAL
template<typename T>
constexpr bool boost::parser::enable_optional<boost::optional<T>> = true;
#endif
void msvc_only()
{
#if BOOST_PARSER_DETAIL_TEXT_USE_CONCEPTS && defined(_MSC_VER)
#include <algorithm>
// msvc string_view
{
std::string_view sv = "text";
std::wstring_view wsv = L"text";
{
auto r = detail::text::as_utf8(sv);
std::string str = " ";
std::ranges::copy(r, str.begin());
BOOST_TEST(str == sv);
}
{
auto r = detail::text::as_utf8(wsv);
std::wstring wstr = L" ";
std::ranges::copy(r, wstr.begin());
BOOST_TEST(wstr == wsv);
}
{
auto r = sv | detail::text::as_utf8;
std::string str = " ";
std::ranges::copy(r, str.begin());
BOOST_TEST(str == sv);
}
{
auto r = wsv | detail::text::as_utf8;
std::wstring wstr = L" ";
std::ranges::copy(r, wstr.begin());
BOOST_TEST(wstr == wsv);
}
{
auto r = detail::text::as_utf16(sv);
std::string str = " ";
std::ranges::copy(r, str.begin());
BOOST_TEST(str == sv);
}
{
auto r = detail::text::as_utf16(wsv);
std::wstring wstr = L" ";
std::ranges::copy(r, wstr.begin());
BOOST_TEST(wstr == wsv);
}
{
auto r = sv | detail::text::as_utf16;
std::string str = " ";
std::ranges::copy(r, str.begin());
BOOST_TEST(str == sv);
}
{
auto r = wsv | detail::text::as_utf16;
std::wstring wstr = L" ";
std::ranges::copy(r, wstr.begin());
BOOST_TEST(wstr == wsv);
}
{
auto r = detail::text::as_utf32(sv);
std::string str = " ";
std::ranges::copy(r, str.begin());
BOOST_TEST(str == sv);
}
{
auto r = detail::text::as_utf32(wsv);
std::wstring wstr = L" ";
std::ranges::copy(r, wstr.begin());
BOOST_TEST(wstr == wsv);
}
{
auto r = sv | detail::text::as_utf32;
std::string str = " ";
std::ranges::copy(r, str.begin());
BOOST_TEST(str == sv);
}
{
auto r = wsv | detail::text::as_utf32;
std::wstring wstr = L" ";
std::ranges::copy(r, wstr.begin());
BOOST_TEST(wstr == wsv);
}
}
// msvc string
{
std::string sv = "text";
std::wstring wsv = L"text";
{
auto r = detail::text::as_utf8(sv);
std::string str = " ";
std::ranges::copy(r, str.begin());
BOOST_TEST(str == sv);
}
{
auto r = detail::text::as_utf8(wsv);
std::wstring wstr = L" ";
std::ranges::copy(r, wstr.begin());
BOOST_TEST(wstr == wsv);
}
{
auto r = sv | detail::text::as_utf8;
std::string str = " ";
std::ranges::copy(r, str.begin());
BOOST_TEST(str == sv);
}
{
auto r = wsv | detail::text::as_utf8;
std::wstring wstr = L" ";
std::ranges::copy(r, wstr.begin());
BOOST_TEST(wstr == wsv);
}
{
auto r = detail::text::as_utf16(sv);
std::string str = " ";
std::ranges::copy(r, str.begin());
BOOST_TEST(str == sv);
}
{
auto r = detail::text::as_utf16(wsv);
std::wstring wstr = L" ";
std::ranges::copy(r, wstr.begin());
BOOST_TEST(wstr == wsv);
}
{
auto r = sv | detail::text::as_utf16;
std::string str = " ";
std::ranges::copy(r, str.begin());
BOOST_TEST(str == sv);
}
{
auto r = wsv | detail::text::as_utf16;
std::wstring wstr = L" ";
std::ranges::copy(r, wstr.begin());
BOOST_TEST(wstr == wsv);
}
{
auto r = detail::text::as_utf32(sv);
std::string str = " ";
std::ranges::copy(r, str.begin());
BOOST_TEST(str == sv);
}
{
auto r = detail::text::as_utf32(wsv);
std::wstring wstr = L" ";
std::ranges::copy(r, wstr.begin());
BOOST_TEST(wstr == wsv);
}
{
auto r = sv | detail::text::as_utf32;
std::string str = " ";
std::ranges::copy(r, str.begin());
BOOST_TEST(str == sv);
}
{
auto r = wsv | detail::text::as_utf32;
std::wstring wstr = L" ";
std::ranges::copy(r, wstr.begin());
BOOST_TEST(wstr == wsv);
}
}
#endif
}
namespace rule_construction_example {
struct type_t
{
type_t() = default;
explicit type_t(double x) : x_(x) {}
// etc.
double x_;
};
namespace bp = boost::parser;
auto doubles_to_type = [](auto & ctx) {
_val(ctx) = type_t(
bp::get(_attr(ctx), bp::llong<0>{}) *
bp::get(_attr(ctx), bp::llong<1>{}));
};
bp::rule<struct type_tag, type_t> type = "type";
auto const type_def = (bp::double_ >> bp::double_)[doubles_to_type];
BOOST_PARSER_DEFINE_RULES(type);
}
void rule_example()
{
namespace bp = boost::parser;
using namespace rule_construction_example;
BOOST_TEST(bp::parse("3 4", type, bp::ws));
}
int main()
{
msvc_only();
rule_example();
// basic
{
constexpr auto parser_1 = char_ >> char_;
constexpr auto parser_2 = char_ >> char_ >> char_;
constexpr auto parser_3 = char_ | char_;
constexpr auto parser_4 = char_('a') | char_('b') | char_('c');
constexpr auto parser_5 = char_('a') | char_('b') | eps;
{
std::string str = "a";
BOOST_TEST(parse(str, char_));
BOOST_TEST(!parse(str, char_('b')));
}
{
std::string str = "a";
char c = '\0';
BOOST_TEST(parse(str, char_, c));
BOOST_TEST(c == 'a');
BOOST_TEST(!parse(str, char_('b')));
}
{
std::string str = "b";
char c = '\0';
BOOST_TEST(parse(str, char_("ab"), c));
BOOST_TEST(c == 'b');
BOOST_TEST(!parse(str, char_("cd")));
}
{
std::string str = "b";
char c = '\0';
std::string const pattern_1 = "ab";
std::string const pattern_2 = "cd";
BOOST_TEST(parse(str, char_(pattern_1), c));
BOOST_TEST(c == 'b');
BOOST_TEST(!parse(str, char_(pattern_2)));
}
{
std::string str = "b";
char c = '\0';
BOOST_TEST(parse(str, char_('a', 'b'), c));
BOOST_TEST(c == 'b');
BOOST_TEST(!parse(str, char_('c', 'd')));
}
{
std::string str = " ";
BOOST_TEST(parse(str, blank));
BOOST_TEST(!parse(str, lower));
}
{
std::string str = "ab";
BOOST_TEST(!parse(str, char_));
{
auto first = str.c_str();
BOOST_TEST(prefix_parse(
first, boost::parser::detail::text::null_sentinel, char_));
}
BOOST_TEST(parse(str, parser_1));
BOOST_TEST(!parse(str, parser_2));
}
{
std::string str = "ab";
tuple<char, char> result;
BOOST_TEST(parse(str, parser_1, result));
using namespace boost::parser::literals;
BOOST_TEST(get(result, 0_c) == 'b');
BOOST_TEST(get(result, 1_c) == '\0');
}
{
std::string str = "abc";
BOOST_TEST(!parse(str, parser_1));
{
auto first = str.c_str();
BOOST_TEST(prefix_parse(
first,
boost::parser::detail::text::null_sentinel,
parser_1));
}
BOOST_TEST(parse(str, parser_2));
}
{
std::string str = "abc";
tuple<char, char, char> result;
BOOST_TEST(parse(str, parser_2, result));
using namespace boost::parser::literals;
BOOST_TEST(get(result, 0_c) == 'c');
BOOST_TEST(get(result, 1_c) == '\0');
BOOST_TEST(get(result, 2_c) == '\0');
}
{
std::string str = "a";
BOOST_TEST(parse(str, parser_3));
BOOST_TEST(parse(str, parser_4));
}
{
std::string str = "a";
char c = '\0';
BOOST_TEST(parse(str, parser_3, c));
BOOST_TEST(c == 'a');
}
{
std::string str = "a";
char c = '\0';
BOOST_TEST(parse(str, parser_4, c));
BOOST_TEST(c == 'a');
}
{
std::string str = "z";
BOOST_TEST(parse(str, parser_3));
BOOST_TEST(!parse(str, parser_4));
}
{
std::string str = "a";
BOOST_TEST(parse(str, parser_5));
}
{
std::string str = "z";
BOOST_TEST(!parse(str, parser_5));
{
auto first = str.c_str();
BOOST_TEST(prefix_parse(
first,
boost::parser::detail::text::null_sentinel,
parser_5));
}
}
{
std::string str = "a";
std::optional<char> c;
BOOST_TEST(parse(str, parser_5, c));
BOOST_TEST(c == 'a');
}
{
std::string str = "z";
std::optional<char> c;
BOOST_TEST(!parse(str, parser_5, c));
}
{
std::string str = "z";
std::optional<char> c;
auto first = str.c_str();
BOOST_TEST(prefix_parse(
first,
boost::parser::detail::text::null_sentinel,
parser_5,
c));
BOOST_TEST(c == std::nullopt);
}
#if TEST_BOOST_OPTIONAL
{
std::string str = "a";
boost::optional<char> c;
BOOST_TEST(parse(str, parser_5, c));
BOOST_TEST(c == 'a');
}
{
std::string str = "z";
boost::optional<char> c;
BOOST_TEST(!parse(str, parser_5, c));
}
{
std::string str = "z";
boost::optional<char> c;
auto first = str.c_str();
BOOST_TEST(prefix_parse(
first,
boost::parser::detail::text::null_sentinel,
parser_5,
c));
BOOST_TEST(c == boost::none);
}
#endif
{
constexpr auto parser = *(char_ - "str") >> *string("str");
std::string str = "somethingstrstrstr";
auto result = boost::parser::parse(str, parser);
BOOST_TEST(result);
BOOST_TEST(
*result ==
std::vector<std::string>({"something", "str", "str", "str"}));
}
}
// int_uint
// clang-format off
{
{
std::string str = "-42";
int i = 0;
BOOST_TEST(parse(str, int_, i));
BOOST_TEST(i == -42);
}
// clang-format on
{
std::string str = "42";
int i = 0;
BOOST_TEST(parse(str, int_, i));
BOOST_TEST(i == 42);
}
{
std::string str = "-42";
int i = 3;
BOOST_TEST(!parse(str, uint_, i));
BOOST_TEST(i == 0);
}
{
std::string str = "42";
int i = 0;
BOOST_TEST(parse(str, uint_, i));
BOOST_TEST(i == 42);
}
{
std::string str = "-0042";
int i = 0;
parser_interface<int_parser<int, 10, 4, 4>> int4;
BOOST_TEST(parse(str, int4, i));
BOOST_TEST(i == -42);
}
{
std::string str = "0042";
unsigned int i = 0;
parser_interface<uint_parser<unsigned int, 10, 4, 4>> uint4;
BOOST_TEST(parse(str, uint4, i));
BOOST_TEST(i == 42u);
}
}
// bool_
{{std::string str = "";
bool b = false;
BOOST_TEST(!parse(str, bool_, b));
}
{
std::string str = "true";
bool b = false;
BOOST_TEST(parse(str, bool_, b));
BOOST_TEST(b == true);
}
{
std::string str = "false ";
bool b = true;
BOOST_TEST(!parse(str, bool_, b));
BOOST_TEST(b == false);
}
{
std::string str = "false ";
bool b = true;
auto first = str.c_str();
BOOST_TEST(prefix_parse(
first, boost::parser::detail::text::null_sentinel, bool_, b));
BOOST_TEST(b == false);
}
{
std::string str = "true ";
auto r = boost::parser::detail::text::as_utf32(str);
bool b = false;
auto first = r.begin();
auto const last = r.end();
BOOST_TEST(prefix_parse(first, last, bool_, b));
BOOST_TEST(b == true);
}
{
std::string str = "false";
auto r = boost::parser::detail::text::as_utf32(str);
bool b = true;
auto first = r.begin();
auto const last = r.end();
BOOST_TEST(prefix_parse(first, last, bool_, b));
BOOST_TEST(b == false);
}
}
// star
{{constexpr auto parser = *char_;
{
std::string str = "";
std::vector<char> chars;
BOOST_TEST(parse(str, parser, chars));
BOOST_TEST(chars == std::vector<char>());
}
{
std::string str = "a";
std::vector<char> chars;
BOOST_TEST(parse(str, parser, chars));
BOOST_TEST(chars == std::vector<char>({'a'}));
}
{
std::string str = "ba";
std::vector<char> chars;
BOOST_TEST(parse(str, parser, chars));
BOOST_TEST(chars == std::vector<char>({'b', 'a'}));
}
}
{
constexpr auto parser = *char_('b');
{
std::string str = "";
std::vector<char> chars;
BOOST_TEST(parse(str, parser, chars));
BOOST_TEST(chars == std::vector<char>());
}
{
std::string str = "b";
std::vector<char> chars;
BOOST_TEST(parse(str, parser, chars));
BOOST_TEST(chars == std::vector<char>({'b'}));
}
{
std::string str = "bb";
std::vector<char> chars;
BOOST_TEST(parse(str, parser, chars));
BOOST_TEST(chars == std::vector<char>({'b', 'b'}));
}
}
}
// plus
{{constexpr auto parser = +char_;
{
std::string str = "";
std::vector<char> chars;
BOOST_TEST(!parse(str, parser, chars));
}
{
std::string str = "a";
std::vector<char> chars;
BOOST_TEST(parse(str, parser, chars));
BOOST_TEST(chars == std::vector<char>({'a'}));
}
{
std::string str = "ba";
std::vector<char> chars;
BOOST_TEST(parse(str, parser, chars));
BOOST_TEST(chars == std::vector<char>({'b', 'a'}));
}
}
{
constexpr auto parser = +char_('b');
{
std::string str = "";
std::vector<char> chars;
BOOST_TEST(!parse(str, parser, chars));
}
{
std::string str = "b";
std::vector<char> chars;
BOOST_TEST(parse(str, parser, chars));
BOOST_TEST(chars == std::vector<char>({'b'}));
}
{
std::string str = "bb";
std::vector<char> chars;
BOOST_TEST(parse(str, parser, chars));
BOOST_TEST(chars == std::vector<char>({'b', 'b'}));
}
}
}
// star_and_plus_collapsing
{{constexpr auto parser = +(+char_('b'));
{
std::string str = "";
std::vector<char> chars;
BOOST_TEST(!parse(str, parser, chars));
}
{
std::string str = "b";
std::vector<char> chars;
BOOST_TEST(parse(str, parser, chars));
BOOST_TEST(chars == std::vector<char>({'b'}));
}
{
std::string str = "bb";
std::vector<char> chars;
BOOST_TEST(parse(str, parser, chars));
BOOST_TEST(chars == std::vector<char>({'b', 'b'}));
}
}
{
constexpr auto parser = **char_('z');
{
std::string str = "";
std::vector<char> chars;
BOOST_TEST(parse(str, parser, chars));
BOOST_TEST(chars == std::vector<char>());
}
{
std::string str = "z";
std::vector<char> chars;
BOOST_TEST(parse(str, parser, chars));
BOOST_TEST(chars == std::vector<char>({'z'}));
}
{
std::string str = "zz";
std::vector<char> chars;
BOOST_TEST(parse(str, parser, chars));
BOOST_TEST(chars == std::vector<char>({'z', 'z'}));
}
}
{
constexpr auto parser = +*char_('z');
{
std::string str = "";
std::vector<char> chars;
BOOST_TEST(parse(str, parser, chars));
BOOST_TEST(chars == std::vector<char>());
}
{
std::string str = "z";
std::vector<char> chars;
BOOST_TEST(parse(str, parser, chars));
BOOST_TEST(chars == std::vector<char>({'z'}));
}
{
std::string str = "zz";
std::vector<char> chars;
BOOST_TEST(parse(str, parser, chars));
BOOST_TEST(chars == std::vector<char>({'z', 'z'}));
}
}
{
constexpr auto parser = *+char_('z');
{
std::string str = "";
std::vector<char> chars;
BOOST_TEST(parse(str, parser, chars));
BOOST_TEST(chars == std::vector<char>());
}
{
std::string str = "z";
std::vector<char> chars;
BOOST_TEST(parse(str, parser, chars));
BOOST_TEST(chars == std::vector<char>({'z'}));
}
{
std::string str = "zz";
std::vector<char> chars;
BOOST_TEST(parse(str, parser, chars));
BOOST_TEST(chars == std::vector<char>({'z', 'z'}));
}
}
}
// action_
{{std::string str = "";
{
std::stringstream ss;
auto action = [&ss](auto & ctx) { ss << _attr(ctx); };
auto parser = *char_('b')[action];
BOOST_TEST(parse(str, parser));
BOOST_TEST(ss.str() == "");
}
{
str = "b";
std::stringstream ss;
auto action = [&ss](auto & ctx) { ss << _attr(ctx); };
auto parser = *char_('b')[action];
BOOST_TEST(parse(str, parser));
BOOST_TEST(ss.str() == "b");
}
{
str = "bb";
std::stringstream ss;
auto action = [&ss](auto & ctx) { ss << _attr(ctx); };
auto parser = *char_('b')[action];
BOOST_TEST(parse(str, parser));
BOOST_TEST(parse(str, parser));
BOOST_TEST(ss.str() == "bbbb");
}
}
{
{
std::string str = "";
std::stringstream ss;
auto action = [&ss](auto & ctx) { ss << _attr(ctx); };
auto parser = +char_('b')[action];
BOOST_TEST(!parse(str, parser));
BOOST_TEST(ss.str() == "");
}
{
std::string str = "b";
std::stringstream ss;
auto action = [&ss](auto & ctx) { ss << _attr(ctx); };
auto parser = +char_('b')[action];
BOOST_TEST(parse(str, parser));
BOOST_TEST(ss.str() == "b");
}
{
std::string str = "bb";
std::stringstream ss;
auto action = [&ss](auto & ctx) { ss << _attr(ctx); };
auto parser = +char_('b')[action];
BOOST_TEST(parse(str, parser));
BOOST_TEST(parse(str, parser));
BOOST_TEST(ss.str() == "bbbb");
}
}
}
// star_as_string_or_vector
{{constexpr auto parser = *char_('z');
{
std::string str = "";
std::string chars;
BOOST_TEST(parse(str, parser, chars));
BOOST_TEST(chars == "");
}
{
std::string str = "z";
std::string chars;
BOOST_TEST(parse(str, parser, chars));
BOOST_TEST(chars == "z");
}
{
std::string str = "zz";
std::string chars;
BOOST_TEST(parse(str, parser, chars));
BOOST_TEST(chars == "zz");
}
}
{
constexpr auto parser = *char_('z');
{
std::string str = "";
std::vector<char> chars;
BOOST_TEST(parse(str, parser, chars));
BOOST_TEST(chars == std::vector<char>());
}
{
std::string str = "z";
std::vector<char> chars;
BOOST_TEST(parse(str, parser, chars));
BOOST_TEST(chars == std::vector<char>({'z'}));
}
{
std::string str = "zz";
std::vector<char> chars;
BOOST_TEST(parse(str, parser, chars));
BOOST_TEST(chars == std::vector<char>({'z', 'z'}));
}
}
{
constexpr auto parser = *string("zs");
{
std::string str = "";
std::vector<std::string> chars;
BOOST_TEST(parse(str, parser, chars));
BOOST_TEST(chars == std::vector<std::string>{});
{
std::optional<std::vector<std::string>> const chars =
parse(str, parser);
BOOST_TEST(chars);
BOOST_TEST(chars->empty());
}
}
{
std::string str = "z";
{
std::vector<std::string> chars;
BOOST_TEST(!parse(str, parser, chars));
BOOST_TEST(chars == std::vector<std::string>{});
}
{
std::vector<std::string> chars;
auto first = str.c_str();
BOOST_TEST(prefix_parse(
first,
boost::parser::detail::text::null_sentinel,
parser,
chars));
BOOST_TEST(chars == std::vector<std::string>{});
}
{
std::optional<std::vector<std::string>> const chars =
parse(str, parser);
BOOST_TEST(!chars);
}
{
auto first = str.c_str();
std::optional<std::vector<std::string>> const chars =
prefix_parse(
first,
boost::parser::detail::text::null_sentinel,
parser);
BOOST_TEST(chars);
BOOST_TEST(chars->empty());
}
}
{
std::string str = "zs";
std::vector<std::string> chars;
BOOST_TEST(parse(str, parser, chars));
BOOST_TEST(chars == std::vector<std::string>({"zs"}));
{
std::optional<std::vector<std::string>> const chars =
parse(str, parser);
BOOST_TEST(chars);
BOOST_TEST(*chars == std::vector<std::string>({"zs"}));
}
}
{
std::string str = "zszs";
std::vector<std::string> chars;
BOOST_TEST(parse(str, parser, chars));
BOOST_TEST(chars == std::vector<std::string>({"zs", "zs"}));
{
std::optional<std::vector<std::string>> const chars =
parse(str, parser);
BOOST_TEST(chars);
BOOST_TEST(
*chars == std::vector<std::string>({"zs", "zs"}));
}
}
}
{
constexpr auto parser = *string("zs");
{
std::string str = "";
std::vector<std::string> chars;
BOOST_TEST(parse(str, parser, chars));
BOOST_TEST(chars == std::vector<std::string>());
}
{
std::string str = "z";
std::vector<std::string> chars;
BOOST_TEST(!parse(str, parser, chars));
}
{
std::string str = "z";
std::vector<std::string> chars;
auto first = str.c_str();
BOOST_TEST(prefix_parse(
first,
boost::parser::detail::text::null_sentinel,
parser,
chars));
}
{
std::string str = "zs";
std::vector<std::string> chars;
BOOST_TEST(parse(str, parser, chars));
BOOST_TEST(chars == std::vector<std::string>({"zs"}));
}
{
std::string str = "zszs";
std::vector<std::string> chars;
BOOST_TEST(parse(str, parser, chars));
BOOST_TEST(chars == std::vector<std::string>({"zs", "zs"}));
}
}
}
// transform
{
int calls = 0;
auto by_value_str_sum = [&](std::string s) {
++calls;
std::transform(s.begin(), s.end(), s.begin(), [](auto ch) {
return ch - '0';
});
return std::accumulate(s.begin(), s.end(), 0);
};
auto cref_str_sum = [&](std::string const & s) {
++calls;
int retval = 0;
for (auto ch : s) {
retval += ch - '0';
}
return retval;
};
auto rv_ref_str_sum = [&](std::string && s) {
++calls;
std::transform(s.begin(), s.end(), s.begin(), [](auto ch) {
return ch - '0';
});
return std::accumulate(s.begin(), s.end(), 0);
};
{
constexpr auto parser = +char_;
std::string str = "012345";
{
auto result = parse(str, parser);
BOOST_TEST(result);
BOOST_TEST(*result == "012345");
}
{
calls = 0;
auto result =
parse(str, transform(by_value_str_sum)[parser]);
BOOST_TEST(result);
BOOST_TEST(*result == 15);
BOOST_TEST(calls == 1);
}
{
calls = 0;
auto result = parse(str, transform(cref_str_sum)[parser]);
BOOST_TEST(result);
BOOST_TEST(*result == 15);
BOOST_TEST(calls == 1);
}
{
calls = 0;
auto result = parse(str, transform(rv_ref_str_sum)[parser]);
BOOST_TEST(result);
BOOST_TEST(*result == 15);
BOOST_TEST(calls == 1);
}
}
{
constexpr auto parser = +char_;
std::string str = "012345";
{
calls = 0;
auto result =
parse(str, omit[transform(by_value_str_sum)[parser]]);
BOOST_TEST(result);
BOOST_TEST(calls == 0);
}
{
calls = 0;
auto result =
parse(str, omit[transform(cref_str_sum)[parser]]);
BOOST_TEST(result);
BOOST_TEST(calls == 0);
}
{
calls = 0;
auto result =
parse(str, omit[transform(rv_ref_str_sum)[parser]]);
BOOST_TEST(result);
BOOST_TEST(calls == 0);
}
}
}
// transform_doc_example
{
//[ transform_directive_example
auto str_sum = [&](std::string const & s) {
int retval = 0;
for (auto ch : s) {
retval += ch - '0';
}
return retval;
};
namespace bp = boost::parser;
constexpr auto parser = +bp::char_;
std::string str = "012345";
auto result = bp::parse(str, bp::transform(str_sum)[parser]);
assert(result);
assert(*result == 15);
static_assert(std::is_same_v<decltype(result), std::optional<int>>);
//]
(void)result;
}
// omit
{{constexpr auto parser = omit[*+char_('z')];
{
std::string str = "";
BOOST_TEST(parse(str, parser));
}
{
std::string str = "z";
BOOST_TEST(parse(str, parser));
}
{
std::string str = "zz";
BOOST_TEST(parse(str, parser));
}
{
std::string str = "";
BOOST_TEST(parse(str, parser));
}
{
std::string str = "z";
BOOST_TEST(parse(str, parser));
}
{
std::string str = "zz";
BOOST_TEST(parse(str, parser));
}
}
{
constexpr auto parser = omit[*string("zs")];
{
std::string str = "";
BOOST_TEST(parse(str, parser));
}
{
std::string str = "z";
BOOST_TEST(!parse(str, parser));
}
{
std::string str = "z";
auto first = str.c_str();
BOOST_TEST(prefix_parse(
first, boost::parser::detail::text::null_sentinel, parser));
}
{
std::string str = "zs";
BOOST_TEST(parse(str, parser));
}
{
std::string str = "zszs";
BOOST_TEST(parse(str, parser));
}
}
}
// repeat
{{constexpr auto parser = repeat(2, 3)[string("zs")];
{
std::string str = "";
std::vector<std::string> chars;
BOOST_TEST(!parse(str, parser, chars));
BOOST_TEST(chars == std::vector<std::string>{});
{
std::optional<std::vector<std::string>> const chars =
parse(str, parser);
BOOST_TEST(!chars);
}
}
{
std::string str = "z";
std::vector<std::string> chars;
BOOST_TEST(!parse(str, parser, chars));
BOOST_TEST(chars == std::vector<std::string>{});
{
std::optional<std::vector<std::string>> const chars =
parse(str, parser);
BOOST_TEST(!chars);
}
}
{
std::string str = "zs";
std::vector<std::string> chars;
BOOST_TEST(!parse(str, parser, chars));
BOOST_TEST(chars == std::vector<std::string>{});
{
std::optional<std::vector<std::string>> const chars =
parse(str, parser);
BOOST_TEST(!chars);
}
}
{
std::string str = "zszs";
std::vector<std::string> chars;
BOOST_TEST(parse(str, parser, chars));
BOOST_TEST(chars == std::vector<std::string>({"zs", "zs"}));
{
std::optional<std::vector<std::string>> const chars =
parse(str, parser);
BOOST_TEST(chars);
BOOST_TEST(*chars == std::vector<std::string>({"zs", "zs"}));
}
}
}
{
constexpr auto parser = *char_ >> eps >> *string("str");
auto result = parse("abcdefg", parser);
BOOST_TEST(result);
BOOST_TEST(*result == std::vector<std::string>({"abcdefg"}));
}
{
constexpr auto parser = *(char_ - "str") >> eps >> *string("str");
auto result = parse("abcdefgstrstr", parser);
BOOST_TEST(result);
BOOST_TEST(
*result == std::vector<std::string>({"abcdefg", "str", "str"}));
}
}
// raw
{
{
constexpr auto parser = raw[*string("zs")];
using range_t = BOOST_PARSER_DETAIL_TEXT_SUBRANGE<
std::string::const_iterator>;
{
std::string const str = "";
range_t r;
BOOST_TEST(parse(str, parser, r));
BOOST_TEST(r.begin() == str.begin());
BOOST_TEST(r.end() == str.begin());
}
{
std::string const str = "z";
range_t r;
BOOST_TEST(!parse(str, parser, r));
BOOST_TEST(r.begin() == r.end());
}
{
std::string const str = "z";
range_t r;
auto first = str.begin();
BOOST_TEST(prefix_parse(first, str.end(), parser, r));
BOOST_TEST(r.begin() == str.begin());
BOOST_TEST(r.end() == str.begin());
}
{
std::string const str = "zs";
range_t r;
BOOST_TEST(parse(str, parser, r));
BOOST_TEST(r.begin() == str.begin());
BOOST_TEST(r.end() == str.end());
}
{
std::string const str = "zszs";
range_t r;
BOOST_TEST(parse(str, parser, r));
BOOST_TEST(r.begin() == str.begin());
BOOST_TEST(r.end() == str.end());
}
{
std::string const str = "";
std::optional<range_t> result = parse(str, parser);
BOOST_TEST(result);
BOOST_TEST(result->begin() == str.begin());
BOOST_TEST(result->end() == str.begin());
}
{
std::string const str = "z";
std::optional<range_t> result = parse(str, parser);
BOOST_TEST(!result);
}
{
std::string const str = "z";
auto first = str.begin();
std::optional<range_t> result =
prefix_parse(first, str.end(), parser);
BOOST_TEST(result);
BOOST_TEST(result->begin() == str.begin());
BOOST_TEST(result->end() == str.begin());
}
{
std::string const str = "zs";
std::optional<range_t> result = parse(str, parser);
BOOST_TEST(result);
BOOST_TEST(result->begin() == str.begin());
BOOST_TEST(result->end() == str.end());
}
{
std::string const str = "zszs";
std::optional<range_t> result = parse(str, parser);
BOOST_TEST(result);
BOOST_TEST(result->begin() == str.begin());
BOOST_TEST(result->end() == str.end());
}
}
}
#if BOOST_PARSER_USE_CONCEPTS
// string_view
{
{
constexpr auto parser = string_view[*string("zs")];
using range_t = std::string_view;
{
std::string const str = "";
range_t r;
BOOST_TEST(parse(str, parser, r));
BOOST_TEST(r == "");
}
{
std::string const str = "z";
range_t r;
BOOST_TEST(!parse(str, parser, r));
BOOST_TEST(r == "");
}
{
std::string const str = "z";
range_t r;
auto first = str.begin();
BOOST_TEST(prefix_parse(first, str.end(), parser, r));
BOOST_TEST(r == "");
}
{
std::string const str = "zs";
range_t r;
BOOST_TEST(parse(str, parser, r));
BOOST_TEST(r == "zs");
}
{
std::string const str = "zszs";
range_t r;
BOOST_TEST(parse(str, parser, r));
BOOST_TEST(r == "zszs");
}
{
std::string const str = "";
std::optional<range_t> result = parse(str, parser);
BOOST_TEST(result);
BOOST_TEST(*result == "");
}
{
std::string const str = "z";
std::optional<range_t> result = parse(str, parser);
BOOST_TEST(!result);
}
{
std::string const str = "z";
auto first = str.begin();
std::optional<range_t> result =
prefix_parse(first, str.end(), parser);
BOOST_TEST(result);
BOOST_TEST(*result == "");
}
{
std::string const str = "zs";
std::optional<range_t> result = parse(str, parser);
BOOST_TEST(result);
BOOST_TEST(*result == "zs");
}
{
std::string const str = "zszs";
std::optional<range_t> result = parse(str, parser);
BOOST_TEST(result);
BOOST_TEST(*result == "zszs");
}
}
{
constexpr auto parser = string_view[*string("zs")];
using range_t = std::u32string_view;
{
std::u32string const str = U"";
range_t r;
BOOST_TEST(parse(str, parser, r));
BOOST_TEST(r == U"");
}
{
std::u32string const str = U"z";
range_t r;
BOOST_TEST(!parse(str, parser, r));
BOOST_TEST(r == U"");
}
{
std::u32string const str = U"z";
range_t r;
auto first = str.begin();
BOOST_TEST(prefix_parse(first, str.end(), parser, r));
BOOST_TEST(r == U"");
}
{
std::u32string const str = U"zs";
range_t r;
BOOST_TEST(parse(str, parser, r));
BOOST_TEST(r == U"zs");
}
{
std::u32string const str = U"zszs";
range_t r;
BOOST_TEST(parse(str, parser, r));
BOOST_TEST(r == U"zszs");
}
{
std::u32string const str = U"";
std::optional<range_t> result = parse(str, parser);
BOOST_TEST(result);
BOOST_TEST(*result == U"");
}
{
std::u32string const str = U"z";
std::optional<range_t> result = parse(str, parser);
BOOST_TEST(!result);
}
{
std::u32string const str = U"z";
auto first = str.begin();
std::optional<range_t> result =
prefix_parse(first, str.end(), parser);
BOOST_TEST(result);
BOOST_TEST(*result == U"");
}
{
std::u32string const str = U"zs";
std::optional<range_t> result = parse(str, parser);
BOOST_TEST(result);
BOOST_TEST(*result == U"zs");
}
{
std::u32string const str = U"zszs";
std::optional<range_t> result = parse(str, parser);
BOOST_TEST(result);
BOOST_TEST(*result == U"zszs");
}
}
}
#endif
// delimited
{{constexpr auto parser = string("yay") % ',';
{
std::string str = "";
std::vector<std::string> chars;
BOOST_TEST(!parse(str, parser, chars));
BOOST_TEST(chars == std::vector<std::string>{});
{
std::optional<std::vector<std::string>> const chars =
parse(str, parser);
BOOST_TEST(!chars);
}
}
{
std::string str = "z";
std::vector<std::string> chars;
BOOST_TEST(!parse(str, parser, chars));
BOOST_TEST(chars == std::vector<std::string>{});
{
std::optional<std::vector<std::string>> const chars =
parse(str, parser);
BOOST_TEST(!chars);
}
}
{
std::string str = ",";
std::vector<std::string> chars;
BOOST_TEST(!parse(str, parser, chars));
BOOST_TEST(chars == std::vector<std::string>{});
{
std::optional<std::vector<std::string>> const chars =
parse(str, parser);
BOOST_TEST(!chars);
}
}
{
std::string str = ",yay";
std::vector<std::string> chars;
BOOST_TEST(!parse(str, parser, chars));
BOOST_TEST(chars == std::vector<std::string>{});
{
std::optional<std::vector<std::string>> const chars =
parse(str, parser);
BOOST_TEST(!chars);
}
}
{
std::string str = "yay";
std::vector<std::string> chars;
BOOST_TEST(parse(str, parser, chars));
BOOST_TEST(chars == std::vector<std::string>({"yay"}));
{
std::optional<std::vector<std::string>> const chars =
parse(str, parser);
BOOST_TEST(chars);
BOOST_TEST(*chars == std::vector<std::string>({"yay"}));
}
}
{
std::string str = "yayyay";
{
std::vector<std::string> chars;
BOOST_TEST(!parse(str, parser, chars));
BOOST_TEST(chars == std::vector<std::string>{});
}
{
std::vector<std::string> chars;
auto first = str.c_str();
BOOST_TEST(prefix_parse(
first,
boost::parser::detail::text::null_sentinel,
parser,
chars));
BOOST_TEST(chars == std::vector<std::string>({"yay"}));
}
{
std::optional<std::vector<std::string>> const chars =
parse(str, parser);
BOOST_TEST(!chars);
}
{
auto first = str.c_str();
std::optional<std::vector<std::string>> const chars =
prefix_parse(
first,
boost::parser::detail::text::null_sentinel,
parser);
BOOST_TEST(chars);
BOOST_TEST(*chars == std::vector<std::string>({"yay"}));
}
}
{
std::string str = "yay,";
{
std::vector<std::string> chars;
BOOST_TEST(!parse(str, parser, chars));
}
{
std::vector<std::string> chars;
auto first = str.c_str();
BOOST_TEST(prefix_parse(
first,
boost::parser::detail::text::null_sentinel,
parser,
chars));
BOOST_TEST(chars == std::vector<std::string>({"yay"}));
}
{
std::optional<std::vector<std::string>> const chars =
parse(str, parser);
BOOST_TEST(!chars);
}
{
auto first = str.c_str();
std::optional<std::vector<std::string>> const chars =
prefix_parse(
first,
boost::parser::detail::text::null_sentinel,
parser);
BOOST_TEST(chars);
BOOST_TEST(*chars == std::vector<std::string>({"yay"}));
}
}
{
std::string str = "yay,yay,yay";
std::vector<std::string> chars;
BOOST_TEST(parse(str, parser, chars));
BOOST_TEST(
chars == std::vector<std::string>({"yay", "yay", "yay"}));
{
std::optional<std::vector<std::string>> const chars =
parse(str, parser);
BOOST_TEST(chars);
BOOST_TEST(
*chars == std::vector<std::string>({"yay", "yay", "yay"}));
}
}
}
{
constexpr auto parser = string("yay") % ',';
{
std::string str = "";
std::vector<std::string> chars;
BOOST_TEST(!parse(str, parser, char_(' '), chars));
BOOST_TEST(chars == std::vector<std::string>{});
}
{
std::string str = "";
std::optional<std::vector<std::string>> const chars =
parse(str, parser, char_(' '));
BOOST_TEST(!chars);
}
{
std::string str = "z";
std::vector<std::string> chars;
BOOST_TEST(!parse(str, parser, char_(' '), chars));
BOOST_TEST(chars == std::vector<std::string>{});
}
{
std::string str = "z";
std::optional<std::vector<std::string>> const chars =
parse(str, parser, char_(' '));
BOOST_TEST(!chars);
}
{
std::string str = ",";
std::vector<std::string> chars;
BOOST_TEST(!parse(str, parser, char_(' '), chars));
BOOST_TEST(chars == std::vector<std::string>{});
}
{
std::string str = ",";
std::optional<std::vector<std::string>> const chars =
parse(str, parser, char_(' '));
BOOST_TEST(!chars);
}
{
std::string str = " ,yay";
std::vector<std::string> chars;
BOOST_TEST(!parse(str, parser, char_(' '), chars));
BOOST_TEST(chars == std::vector<std::string>{});
}
{
std::string str = " ,yay";
std::optional<std::vector<std::string>> const chars =
parse(str, parser, char_(' '));
BOOST_TEST(!chars);
}
{
std::string str = ", yay";
std::vector<std::string> chars;
BOOST_TEST(!parse(str, parser, char_(' '), chars));
BOOST_TEST(chars == std::vector<std::string>{});
}
{
std::string str = ", yay";
std::optional<std::vector<std::string>> const chars =
parse(str, parser, char_(' '));
BOOST_TEST(!chars);
}
{
std::string str = ",yay ";
std::vector<std::string> chars;
BOOST_TEST(!parse(str, parser, char_(' '), chars));
BOOST_TEST(chars == std::vector<std::string>{});
}
{
std::string str = ",yay ";
std::optional<std::vector<std::string>> const chars =
parse(str, parser, char_(' '));
BOOST_TEST(!chars);
}
{
std::string str = " , yay ";
std::vector<std::string> chars;
BOOST_TEST(!parse(str, parser, char_(' '), chars));
BOOST_TEST(chars == std::vector<std::string>{});
}
{
std::string str = " , yay ";
std::optional<std::vector<std::string>> const chars =
parse(str, parser, char_(' '));
BOOST_TEST(!chars);
}
{
std::string str = "yay";
std::vector<std::string> chars;
BOOST_TEST(parse(str, parser, char_(' '), chars));
BOOST_TEST(chars == std::vector<std::string>({"yay"}));
}
{
std::string str = "yay";
std::optional<std::vector<std::string>> const chars =
parse(str, parser, char_(' '));
BOOST_TEST(chars);
}
{
std::string str = "yayyay";
std::vector<std::string> chars;
auto first = str.c_str();
BOOST_TEST(prefix_parse(
first,
boost::parser::detail::text::null_sentinel,
parser,
char_(' '),
chars));
BOOST_TEST(chars == std::vector<std::string>({"yay"}));
}
{
std::string str = "yayyay";
std::vector<std::string> chars;
BOOST_TEST(!parse(str, parser, char_(' '), chars));
}
{
std::string str = "yayyay";
std::vector<std::string> chars;
auto first = str.c_str();
BOOST_TEST(prefix_parse(
first,
boost::parser::detail::text::null_sentinel,
parser,
char_(' '),
chars));
BOOST_TEST(chars == std::vector<std::string>({"yay"}));
}
{
std::string str = "yayyay";
std::optional<std::vector<std::string>> const chars =
parse(str, parser, char_(' '));
BOOST_TEST(!chars);
}
{
std::string str = "yayyay";
auto first = str.c_str();
std::optional<std::vector<std::string>> const chars =
prefix_parse(
first,
boost::parser::detail::text::null_sentinel,
parser,
char_(' '));
BOOST_TEST(chars);
BOOST_TEST(*chars == std::vector<std::string>({"yay"}));
}
{
std::string str = "yay,";
std::vector<std::string> chars;
BOOST_TEST(!parse(str, parser, char_(' '), chars));
}
{
std::string str = "yay,";
std::vector<std::string> chars;
auto first = str.c_str();
BOOST_TEST(prefix_parse(
first,
boost::parser::detail::text::null_sentinel,
parser,
char_(' '),
chars));
BOOST_TEST(chars == std::vector<std::string>({"yay"}));
}
{
std::string str = "yay,";
std::optional<std::vector<std::string>> const chars =
parse(str, parser, char_(' '));
BOOST_TEST(!chars);
}
{
std::string str = "yay,";
auto first = str.c_str();
std::optional<std::vector<std::string>> const chars =
prefix_parse(
first,
boost::parser::detail::text::null_sentinel,
parser,
char_(' '));
BOOST_TEST(chars);
BOOST_TEST(*chars == std::vector<std::string>({"yay"}));
}
{
std::string str = "yay,yay,yay";
std::vector<std::string> chars;
BOOST_TEST(parse(str, parser, char_(' '), chars));
BOOST_TEST(
chars == std::vector<std::string>({"yay", "yay", "yay"}));
}
{
std::string str = "yay,yay,yay";
std::optional<std::vector<std::string>> const chars =
parse(str, parser, char_(' '));
BOOST_TEST(chars);
BOOST_TEST(
*chars == std::vector<std::string>({"yay", "yay", "yay"}));
}
{
std::string str = " yay,yay,yay";
std::vector<std::string> chars;
BOOST_TEST(parse(str, parser, char_(' '), chars));
BOOST_TEST(
chars == std::vector<std::string>({"yay", "yay", "yay"}));
}
{
std::string str = " yay,yay,yay";
std::optional<std::vector<std::string>> const chars =
parse(str, parser, char_(' '));
BOOST_TEST(chars);
BOOST_TEST(
*chars == std::vector<std::string>({"yay", "yay", "yay"}));
}
{
std::string str = "yay ,yay,yay";
std::vector<std::string> chars;
BOOST_TEST(parse(str, parser, char_(' '), chars));
BOOST_TEST(
chars == std::vector<std::string>({"yay", "yay", "yay"}));
}
{
std::string str = "yay ,yay,yay";
std::optional<std::vector<std::string>> const chars =
parse(str, parser, char_(' '));
BOOST_TEST(chars);
BOOST_TEST(
*chars == std::vector<std::string>({"yay", "yay", "yay"}));
}
{
std::string str = "yay, yay,yay";
std::vector<std::string> chars;
BOOST_TEST(parse(str, parser, char_(' '), chars));
BOOST_TEST(
chars == std::vector<std::string>({"yay", "yay", "yay"}));
}
{
std::string str = "yay, yay,yay";
std::optional<std::vector<std::string>> const chars =
parse(str, parser, char_(' '));
BOOST_TEST(chars);
BOOST_TEST(
*chars == std::vector<std::string>({"yay", "yay", "yay"}));
}
{
std::string str = "yay,yay ,yay";
std::vector<std::string> chars;
BOOST_TEST(parse(str, parser, char_(' '), chars));
BOOST_TEST(
chars == std::vector<std::string>({"yay", "yay", "yay"}));
}
{
std::string str = "yay,yay ,yay";
std::optional<std::vector<std::string>> const chars =
parse(str, parser, char_(' '));
BOOST_TEST(chars);
BOOST_TEST(
*chars == std::vector<std::string>({"yay", "yay", "yay"}));
}
{
std::string str = "yay,yay, yay";
std::vector<std::string> chars;
BOOST_TEST(parse(str, parser, char_(' '), chars));
BOOST_TEST(
chars == std::vector<std::string>({"yay", "yay", "yay"}));
}
{
std::string str = "yay,yay, yay";
std::optional<std::vector<std::string>> const chars =
parse(str, parser, char_(' '));
BOOST_TEST(chars);
BOOST_TEST(
*chars == std::vector<std::string>({"yay", "yay", "yay"}));
}
{
std::string str = "yay,yay,yay ";
std::vector<std::string> chars;
BOOST_TEST(parse(str, parser, char_(' '), chars));
BOOST_TEST(
chars == std::vector<std::string>({"yay", "yay", "yay"}));
}
{
std::string str = "yay,yay,yay ";
std::optional<std::vector<std::string>> const chars =
parse(str, parser, char_(' '));
BOOST_TEST(chars);
BOOST_TEST(
*chars == std::vector<std::string>({"yay", "yay", "yay"}));
}
{
std::string str = " yay , yay , yay ";
std::vector<std::string> chars;
BOOST_TEST(parse(str, parser, char_(' '), chars));
BOOST_TEST(
chars == std::vector<std::string>({"yay", "yay", "yay"}));
}
{
std::string str = " yay , yay , yay ";
std::optional<std::vector<std::string>> const chars =
parse(str, parser, char_(' '));
BOOST_TEST(chars);
BOOST_TEST(
*chars == std::vector<std::string>({"yay", "yay", "yay"}));
}
{
std::string str = "yay, yay, yay";
std::vector<std::string> chars;
BOOST_TEST(parse(str, parser, char_(' '), chars));
BOOST_TEST(
chars == std::vector<std::string>({"yay", "yay", "yay"}));
}
{
std::string str = "yay, yay, yay";
std::optional<std::vector<std::string>> const chars =
parse(str, parser, char_(' '));
BOOST_TEST(chars);
BOOST_TEST(
*chars == std::vector<std::string>({"yay", "yay", "yay"}));
}
}
{
constexpr auto yay = string("yay") % ',';
constexpr auto aww = string("aww") % ',';
constexpr auto parser = yay >> ',' >> aww;
{
std::string str = "yay, yay, yay, aww, aww";
auto result = parse(str, parser, ws);
BOOST_TEST(result);
BOOST_TEST(
*result ==
(tuple<std::vector<std::string>, std::vector<std::string>>(
std::vector<std::string>({"yay", "yay", "yay"}),
std::vector<std::string>({"aww", "aww"}))));
}
{
std::string str = "yay, yay, yay , aww, aww";
auto result = parse(str, parser, ws);
BOOST_TEST(result);
BOOST_TEST(
*result ==
(tuple<std::vector<std::string>, std::vector<std::string>>(
std::vector<std::string>({"yay", "yay", "yay"}),
std::vector<std::string>({"aww", "aww"}))));
}
}
{
constexpr auto yay = string("yay") % ',';
constexpr auto aww = string("aww") % ',';
constexpr auto parser = raw[yay] >> ',' >> raw[aww];
using namespace boost::parser::literals;
{
std::string str = "yay, yay, yay, aww, aww";
auto result = parse(str, parser, ws);
BOOST_TEST(result);
auto subrange_0 = boost::parser::get(*result, 0_c);
auto subrange_1 = boost::parser::get(*result, 1_c);
BOOST_TEST(subrange_0.begin() == str.begin());
BOOST_TEST(subrange_0.end() == str.begin() + 13);
BOOST_TEST(subrange_1.begin() == str.begin() + 15);
BOOST_TEST(subrange_1.end() == str.begin() + 23);
}
{
std::string str = "yay, yay, yay , aww, aww";
auto result = parse(str, parser, ws);
BOOST_TEST(result);
auto subrange_0 = boost::parser::get(*result, 0_c);
auto subrange_1 = boost::parser::get(*result, 1_c);
BOOST_TEST(subrange_0.begin() == str.begin());
BOOST_TEST(subrange_0.end() == str.begin() + 13);
BOOST_TEST(subrange_1.begin() == str.begin() + 16);
BOOST_TEST(subrange_1.end() == str.begin() + 24);
}
}
{
constexpr auto yay = *string("yay");
constexpr auto aww = *string("aww");
constexpr auto parser = raw[yay] >> ',' >> raw[aww];
{
std::string str = "yay yay yay, aww aww";
auto result = parse(str, parser, ws);
BOOST_TEST(result);
auto subrange_0 = boost::parser::get(*result, llong<0>{});
auto subrange_1 = boost::parser::get(*result, llong<1>{});
BOOST_TEST(subrange_0.begin() == str.begin());
BOOST_TEST(subrange_0.end() == str.begin() + 11);
BOOST_TEST(subrange_1.begin() == str.begin() + 13);
BOOST_TEST(subrange_1.end() == str.begin() + 20);
}
{
std::string str = "yay yay yay , aww aww";
auto result = parse(str, parser, ws);
BOOST_TEST(result);
auto subrange_0 = boost::parser::get(*result, llong<0>{});
auto subrange_1 = boost::parser::get(*result, llong<1>{});
BOOST_TEST(subrange_0.begin() == str.begin());
BOOST_TEST(subrange_0.end() == str.begin() + 11);
BOOST_TEST(subrange_1.begin() == str.begin() + 14);
BOOST_TEST(subrange_1.end() == str.begin() + 21);
}
}
}
// lexeme
{{constexpr auto parser = lexeme[string("yay") % ','];
{
std::string str = "yay, yay, yay";
{
std::vector<std::string> chars;
BOOST_TEST(!parse(str, parser, char_(' '), chars));
}
{
std::vector<std::string> chars;
auto first = str.c_str();
BOOST_TEST(prefix_parse(
first,
boost::parser::detail::text::null_sentinel,
parser,
char_(' '),
chars));
BOOST_TEST(chars == std::vector<std::string>({"yay"}));
}
{
std::string str = "yay, yay, yay";
std::optional<std::vector<std::string>> const chars =
parse(str, parser, char_(' '));
BOOST_TEST(!chars);
}
{
std::string str = "yay, yay, yay";
auto first = str.c_str();
std::optional<std::vector<std::string>> const chars =
prefix_parse(
first,
boost::parser::detail::text::null_sentinel,
parser,
char_(' '));
BOOST_TEST(chars);
BOOST_TEST(*chars == std::vector<std::string>({"yay"}));
}
}
{
std::string str = " yay, yay, yay";
{
std::vector<std::string> chars;
BOOST_TEST(!parse(str, parser, char_(' '), chars));
}
{
std::vector<std::string> chars;
auto first = str.c_str();
BOOST_TEST(prefix_parse(
first,
boost::parser::detail::text::null_sentinel,
parser,
char_(' '),
chars));
BOOST_TEST(chars == std::vector<std::string>({"yay"}));
}
{
std::string str = " yay, yay, yay";
std::optional<std::vector<std::string>> const chars =
parse(str, parser, char_(' '));
BOOST_TEST(!chars);
}
{
std::string str = " yay, yay, yay";
auto first = str.c_str();
std::optional<std::vector<std::string>> const chars =
prefix_parse(
first,
boost::parser::detail::text::null_sentinel,
parser,
char_(' '));
BOOST_TEST(chars);
BOOST_TEST(*chars == std::vector<std::string>({"yay"}));
}
}
}
{
constexpr auto parser = lexeme[skip[string("yay") % ',']];
{
std::string str = "yay, yay, yay";
std::vector<std::string> chars;
BOOST_TEST(parse(str, parser, char_(' '), chars));
BOOST_TEST(
chars == std::vector<std::string>({"yay", "yay", "yay"}));
{
std::string str = "yay, yay, yay";
std::optional<std::vector<std::string>> const chars =
parse(str, parser, char_(' '));
BOOST_TEST(chars);
BOOST_TEST(
*chars ==
std::vector<std::string>({"yay", "yay", "yay"}));
}
}
{
std::string str = " yay, yay, yay";
std::vector<std::string> chars;
BOOST_TEST(parse(str, parser, char_(' '), chars));
BOOST_TEST(
chars == std::vector<std::string>({"yay", "yay", "yay"}));
{
std::string str = " yay, yay, yay";
std::optional<std::vector<std::string>> const chars =
parse(str, parser, char_(' '));
BOOST_TEST(chars);
BOOST_TEST(
*chars ==
std::vector<std::string>({"yay", "yay", "yay"}));
}
}
}
{
auto const parser = string("abc");
// Follows the parser used in transform_replace().
auto before = [&](auto & ctx) {};
auto after = [&](auto & ctx) {};
auto const search_parser =
omit[*(char_ - parser)] >>
-lexeme[eps[before] >> skip[parser] >> eps[after]];
{
std::string str = "abc";
std::optional<std::string> result;
BOOST_TEST(parse(str, search_parser, char_(' '), result));
BOOST_TEST(*result == "abc");
{
std::string str = "abc";
auto first = detail::text::detail::begin(str);
auto last = detail::text::detail::end(str);
auto const result =
prefix_parse(first, last, search_parser, char_(' '));
static_assert(
std::is_same_v<
decltype(result),
std::optional<std::optional<std::string>> const>);
BOOST_TEST(result);
BOOST_TEST(**result == "abc");
}
}
{
std::string str = " abc";
std::optional<std::string> result;
BOOST_TEST(parse(str, search_parser, char_(' '), result));
BOOST_TEST(*result == "abc");
{
std::string str = " abc";
auto const result = parse(str, search_parser, char_(' '));
static_assert(
std::is_same_v<
decltype(result),
std::optional<std::optional<std::string>> const>);
BOOST_TEST(result);
BOOST_TEST(**result == "abc");
}
}
}
{
auto const parser = int_ % ',';
// Follows the parser used in transform_replace().
auto before = [&](auto & ctx) {};
auto after = [&](auto & ctx) {};
auto const search_parser =
omit[*(char_ - parser)] >>
-lexeme[eps[before] >> skip[parser] >> eps[after]];
{
std::string str = "1, 2, 4";
std::optional<std::vector<int>> result;
BOOST_TEST(parse(str, search_parser, char_(' '), result));
BOOST_TEST(*result == std::vector<int>({1, 2, 4}));
{
std::string str = "1, 2, 4";
auto const result = parse(str, search_parser, char_(' '));
static_assert(std::is_same_v<
decltype(result),
std::optional<
std::optional<std::vector<int>>> const>);
BOOST_TEST(result);
BOOST_TEST(**result == std::vector<int>({1, 2, 4}));
}
}
{
std::string str = " 1, 2, 4";
std::optional<std::vector<int>> result;
BOOST_TEST(parse(str, search_parser, char_(' '), result));
BOOST_TEST(*result == std::vector<int>({1, 2, 4}));
{
std::string str = " 1, 2, 4";
auto const result = parse(str, search_parser, char_(' '));
static_assert(std::is_same_v<
decltype(result),
std::optional<
std::optional<std::vector<int>>> const>);
BOOST_TEST(result);
BOOST_TEST(**result == std::vector<int>({1, 2, 4}));
}
}
}
}
// skip
{{constexpr auto parser = skip(char_(' '))[string("yay") % ','];
{
std::string str = "yay, yay, yay";
std::vector<std::string> chars;
BOOST_TEST(parse(str, parser, chars));
BOOST_TEST(
chars == std::vector<std::string>({"yay", "yay", "yay"}));
}
{
std::string str = "yay, yay, yay";
std::optional<std::vector<std::string>> const chars =
parse(str, parser);
BOOST_TEST(chars);
BOOST_TEST(
*chars == std::vector<std::string>({"yay", "yay", "yay"}));
}
{
std::string str = " yay, yay, yay";
std::vector<std::string> chars;
BOOST_TEST(parse(str, parser, chars));
BOOST_TEST(
chars == std::vector<std::string>({"yay", "yay", "yay"}));
}
{
std::string str = " yay, yay, yay";
std::optional<std::vector<std::string>> const chars =
parse(str, parser);
BOOST_TEST(chars);
BOOST_TEST(
*chars == std::vector<std::string>({"yay", "yay", "yay"}));
}
}
}
// combined_seq_and_or
{{constexpr auto parser = char_('a') >> char_('b') >> char_('c') |
char_('x') >> char_('y') >> char_('z');
using tup = tuple<char, char, char>;
{
std::string str = "abc";
tuple<char, char, char> chars;
BOOST_TEST(parse(str, parser, chars));
BOOST_TEST(chars == tup('c', '\0', '\0'));
}
{
std::string str = "abc";
std::optional<std::string> const chars = parse(str, parser);
BOOST_TEST(chars);
BOOST_TEST(*chars == "abc");
}
{
std::string str = "xyz";
tup chars;
BOOST_TEST(parse(str, parser, chars));
BOOST_TEST(chars == tup('z', '\0', '\0'));
}
}
{
constexpr auto parser = char_('a') >> string("b") >> char_('c') |
char_('x') >> string("y") >> char_('z');
{
std::string str = "abc";
std::string chars;
BOOST_TEST(parse(str, parser, chars));
BOOST_TEST(chars == "abc");
}
{
std::string str = "abc";
std::optional<std::string> const chars = parse(str, parser);
BOOST_TEST(chars);
BOOST_TEST(*chars == "abc");
}
{
std::string str = "xyz";
std::string chars;
BOOST_TEST(parse(str, parser, chars));
BOOST_TEST(chars == "xyz");
}
}
{
constexpr auto parser = char_('a') >> char_('b') >> char_('c') |
char_('x') >> char_('y') >> char_('z');
using tup = tuple<char, char, char>;
{
std::string str = "abc";
tuple<std::any, std::any, std::any> chars;
BOOST_TEST(parse(str, parser, chars));
}
{
std::string str = "xyz";
tuple<char, char, char> chars;
BOOST_TEST(parse(str, parser, chars));
BOOST_TEST(chars == tup('z', '\0', '\0'));
}
}
{
constexpr auto parser = !char_('a');
std::string str = "a";
BOOST_TEST(!parse(str, parser));
}
{
constexpr auto parser = &char_('a');
std::string str = "a";
BOOST_TEST(!parse(str, parser));
}
{
constexpr auto parser = &char_('a');
std::string str = "a";
auto first = str.c_str();
BOOST_TEST(prefix_parse(
first, boost::parser::detail::text::null_sentinel, parser));
}
{
#if defined(__clang__)
#pragma GCC diagnostic push
#pragma GCC diagnostic ignored "-Woverloaded-shift-op-parentheses"
#endif
constexpr auto parser = (char_('a') >> string("b") > char_('c')) |
(char_('x') >> string("y") >> char_('z'));
#if defined(__clang__)
#pragma GCC diagnostic pop
#endif
{
std::string str = "abc";
std::string chars;
BOOST_TEST(parse(str, parser, chars));
BOOST_TEST(chars == "abc");
}
{
std::string str = "abc";
std::optional<std::string> const chars = parse(str, parser);
BOOST_TEST(chars);
BOOST_TEST(*chars == "abc");
}
{
std::string str = "xyz";
std::string chars;
BOOST_TEST(parse(str, parser, chars));
BOOST_TEST(chars == "xyz");
}
{
std::string str = "abz";
std::string chars;
rethrow_error_handler eh;
BOOST_TEST_THROWS(
parse(str, with_error_handler(parser, eh), chars),
parse_error<std::string::const_iterator>);
}
{
std::string str = "abz";
std::string chars;
BOOST_TEST(!parse(str, parser, chars));
}
{
std::string str = "abz";
std::string chars;
stream_error_handler eh("simple_parser.cpp");
BOOST_TEST(!parse(str, with_error_handler(parser, eh), chars));
}
{
std::string str = "ab";
std::string chars;
stream_error_handler eh("simple_parser.cpp");
BOOST_TEST(!parse(str, with_error_handler(parser, eh), chars));
}
}
{
#if defined(__clang__)
#pragma GCC diagnostic push
#pragma GCC diagnostic ignored "-Woverloaded-shift-op-parentheses"
#endif
constexpr auto parser = (char_('a') >> string("b") > char_('c')) |
(char_('x') >> string("y") >> char_('z'));
#if defined(__clang__)
#pragma GCC diagnostic pop
#endif
{
std::string str = "abc";
std::string chars;
BOOST_TEST(parse(str, parser, chars));
BOOST_TEST(chars == "abc");
}
{
std::string str = "abc";
std::optional<std::string> const chars = parse(str, parser);
BOOST_TEST(chars);
BOOST_TEST(*chars == "abc");
}
{
std::string str = "xyz";
std::string chars;
BOOST_TEST(parse(str, parser, chars, trace::on));
BOOST_TEST(chars == "xyz");
}
}
{
constexpr auto parser = int_ >> -(lit('a') | 'b');
auto result = parse("34b", parser);
BOOST_TEST(result);
BOOST_TEST(*result == 34);
}
}
// eol_
{{constexpr auto parser = eol;
{
std::string str = "y";
BOOST_TEST(!parse(str, parser));
}
{
std::string s = (char const *)u8"\u000a";
auto str = boost::parser::detail::text::as_utf8(s);
BOOST_TEST(parse(str, parser));
}
{
std::string s = (char const *)u8"\u000d\u000a";
auto str = boost::parser::detail::text::as_utf8(s);
BOOST_TEST(parse(str, parser));
}
{
std::string s = (char const *)u8"\u000b";
auto str = boost::parser::detail::text::as_utf8(s);
BOOST_TEST(parse(str, parser));
}
{
std::string s = (char const *)u8"\u000c";
auto str = boost::parser::detail::text::as_utf8(s);
BOOST_TEST(parse(str, parser));
}
{
std::string s = (char const *)u8"\u000d";
auto str = boost::parser::detail::text::as_utf8(s);
BOOST_TEST(parse(str, parser));
}
{
std::string s = (char const *)u8"\u0085";
auto str = boost::parser::detail::text::as_utf8(s);
BOOST_TEST(parse(str, parser));
}
{
std::string s = (char const *)u8"\u2028";
auto str = boost::parser::detail::text::as_utf8(s);
BOOST_TEST(parse(str, parser));
}
{
std::string s = (char const *)u8"\u2029";
auto str = boost::parser::detail::text::as_utf8(s);
BOOST_TEST(parse(str, parser));
}
}
}
// ws_
{{constexpr auto parser = ws;
{
std::string str = "y";
BOOST_TEST(!parse(str, parser));
}
{
std::string s = (char const *)u8"\u0009";
auto str = boost::parser::detail::text::as_utf8(s);
BOOST_TEST(parse(str, parser));
}
{
std::string s = (char const *)u8"\u000a";
auto str = boost::parser::detail::text::as_utf8(s);
BOOST_TEST(parse(str, parser));
}
{
std::string s = (char const *)u8"\u000d\u000a";
auto str = boost::parser::detail::text::as_utf8(s);
BOOST_TEST(parse(str, parser));
}
{
std::string s = (char const *)u8"\u000b";
auto str = boost::parser::detail::text::as_utf8(s);
BOOST_TEST(parse(str, parser));
}
{
std::string s = (char const *)u8"\u000c";
auto str = boost::parser::detail::text::as_utf8(s);
BOOST_TEST(parse(str, parser));
}
{
std::string s = (char const *)u8"\u000d";
auto str = boost::parser::detail::text::as_utf8(s);
BOOST_TEST(parse(str, parser));
}
{
std::string s = (char const *)u8"\u0085";
auto str = boost::parser::detail::text::as_utf8(s);
BOOST_TEST(parse(str, parser));
}
{
std::string s = (char const *)u8"\u00a0";
auto str = boost::parser::detail::text::as_utf8(s);
BOOST_TEST(parse(str, parser));
}
{
std::string s = (char const *)u8"\u1680";
auto str = boost::parser::detail::text::as_utf8(s);
BOOST_TEST(parse(str, parser));
}
{
std::string s = (char const *)u8"\u2000";
auto str = boost::parser::detail::text::as_utf8(s);
BOOST_TEST(parse(str, parser));
}
{
std::string s = (char const *)u8"\u2001";
auto str = boost::parser::detail::text::as_utf8(s);
BOOST_TEST(parse(str, parser));
}
{
std::string s = (char const *)u8"\u2002";
auto str = boost::parser::detail::text::as_utf8(s);
BOOST_TEST(parse(str, parser));
}
{
std::string s = (char const *)u8"\u2003";
auto str = boost::parser::detail::text::as_utf8(s);
BOOST_TEST(parse(str, parser));
}
{
std::string s = (char const *)u8"\u2004";
auto str = boost::parser::detail::text::as_utf8(s);
BOOST_TEST(parse(str, parser));
}
{
std::string s = (char const *)u8"\u2005";
auto str = boost::parser::detail::text::as_utf8(s);
BOOST_TEST(parse(str, parser));
}
{
std::string s = (char const *)u8"\u2006";
auto str = boost::parser::detail::text::as_utf8(s);
BOOST_TEST(parse(str, parser));
}
{
std::string s = (char const *)u8"\u2007";
auto str = boost::parser::detail::text::as_utf8(s);
BOOST_TEST(parse(str, parser));
}
{
std::string s = (char const *)u8"\u2008";
auto str = boost::parser::detail::text::as_utf8(s);
BOOST_TEST(parse(str, parser));
}
{
std::string s = (char const *)u8"\u2009";
auto str = boost::parser::detail::text::as_utf8(s);
BOOST_TEST(parse(str, parser));
}
{
std::string s = (char const *)u8"\u200a";
auto str = boost::parser::detail::text::as_utf8(s);
BOOST_TEST(parse(str, parser));
}
{
std::string s = (char const *)u8"\u2028";
auto str = boost::parser::detail::text::as_utf8(s);
BOOST_TEST(parse(str, parser));
}
{
std::string s = (char const *)u8"\u2029";
auto str = boost::parser::detail::text::as_utf8(s);
BOOST_TEST(parse(str, parser));
}
{
std::string s = (char const *)u8"\u202F";
auto str = boost::parser::detail::text::as_utf8(s);
BOOST_TEST(parse(str, parser));
}
{
std::string s = (char const *)u8"\u205F";
auto str = boost::parser::detail::text::as_utf8(s);
BOOST_TEST(parse(str, parser));
}
{
std::string s = (char const *)u8"\u3000";
auto str = boost::parser::detail::text::as_utf8(s);
BOOST_TEST(parse(str, parser));
}
}
}
// blank_
{{constexpr auto parser = blank;
constexpr auto alt_parser = ws - eol;
{
std::string str = "y";
BOOST_TEST(!parse(str, parser));
}
{
std::string s = (char const *)u8"\u0009";
auto str = boost::parser::detail::text::as_utf8(s);
BOOST_TEST(parse(str, parser) == parse(str, alt_parser));
}
{
std::string s = (char const *)u8"\u000a";
auto str = boost::parser::detail::text::as_utf8(s);
BOOST_TEST(parse(str, parser) == parse(str, alt_parser));
}
{
std::string s = (char const *)u8"\u000d\u000a";
auto str = boost::parser::detail::text::as_utf8(s);
BOOST_TEST(parse(str, parser) == parse(str, alt_parser));
}
{
std::string s = (char const *)u8"\u000b";
auto str = boost::parser::detail::text::as_utf8(s);
BOOST_TEST(parse(str, parser) == parse(str, alt_parser));
}
{
std::string s = (char const *)u8"\u000c";
auto str = boost::parser::detail::text::as_utf8(s);
BOOST_TEST(parse(str, parser) == parse(str, alt_parser));
}
{
std::string s = (char const *)u8"\u000d";
auto str = boost::parser::detail::text::as_utf8(s);
BOOST_TEST(parse(str, parser) == parse(str, alt_parser));
}
{
std::string s = (char const *)u8"\u0085";
auto str = boost::parser::detail::text::as_utf8(s);
BOOST_TEST(parse(str, parser) == parse(str, alt_parser));
}
{
std::string s = (char const *)u8"\u00a0";
auto str = boost::parser::detail::text::as_utf8(s);
BOOST_TEST(parse(str, parser) == parse(str, alt_parser));
}
{
std::string s = (char const *)u8"\u1680";
auto str = boost::parser::detail::text::as_utf8(s);
BOOST_TEST(parse(str, parser) == parse(str, alt_parser));
}
{
std::string s = (char const *)u8"\u2000";
auto str = boost::parser::detail::text::as_utf8(s);
BOOST_TEST(parse(str, parser) == parse(str, alt_parser));
}
{
std::string s = (char const *)u8"\u2001";
auto str = boost::parser::detail::text::as_utf8(s);
BOOST_TEST(parse(str, parser) == parse(str, alt_parser));
}
{
std::string s = (char const *)u8"\u2002";
auto str = boost::parser::detail::text::as_utf8(s);
BOOST_TEST(parse(str, parser) == parse(str, alt_parser));
}
{
std::string s = (char const *)u8"\u2003";
auto str = boost::parser::detail::text::as_utf8(s);
BOOST_TEST(parse(str, parser) == parse(str, alt_parser));
}
{
std::string s = (char const *)u8"\u2004";
auto str = boost::parser::detail::text::as_utf8(s);
BOOST_TEST(parse(str, parser) == parse(str, alt_parser));
}
{
std::string s = (char const *)u8"\u2005";
auto str = boost::parser::detail::text::as_utf8(s);
BOOST_TEST(parse(str, parser) == parse(str, alt_parser));
}
{
std::string s = (char const *)u8"\u2006";
auto str = boost::parser::detail::text::as_utf8(s);
BOOST_TEST(parse(str, parser) == parse(str, alt_parser));
}
{
std::string s = (char const *)u8"\u2007";
auto str = boost::parser::detail::text::as_utf8(s);
BOOST_TEST(parse(str, parser) == parse(str, alt_parser));
}
{
std::string s = (char const *)u8"\u2008";
auto str = boost::parser::detail::text::as_utf8(s);
BOOST_TEST(parse(str, parser) == parse(str, alt_parser));
}
{
std::string s = (char const *)u8"\u2009";
auto str = boost::parser::detail::text::as_utf8(s);
BOOST_TEST(parse(str, parser) == parse(str, alt_parser));
}
{
std::string s = (char const *)u8"\u200a";
auto str = boost::parser::detail::text::as_utf8(s);
BOOST_TEST(parse(str, parser) == parse(str, alt_parser));
}
{
std::string s = (char const *)u8"\u2028";
auto str = boost::parser::detail::text::as_utf8(s);
BOOST_TEST(parse(str, parser) == parse(str, alt_parser));
}
{
std::string s = (char const *)u8"\u2029";
auto str = boost::parser::detail::text::as_utf8(s);
BOOST_TEST(parse(str, parser) == parse(str, alt_parser));
}
{
std::string s = (char const *)u8"\u202F";
auto str = boost::parser::detail::text::as_utf8(s);
BOOST_TEST(parse(str, parser) == parse(str, alt_parser));
}
{
std::string s = (char const *)u8"\u205F";
auto str = boost::parser::detail::text::as_utf8(s);
BOOST_TEST(parse(str, parser) == parse(str, alt_parser));
}
{
std::string s = (char const *)u8"\u3000";
auto str = boost::parser::detail::text::as_utf8(s);
BOOST_TEST(parse(str, parser) == parse(str, alt_parser));
}
}
}
// digit_
{
constexpr auto parser = +digit;
std::u32string str = U"a/09:\x0659\x0660\x0669\x066a";
std::vector<uint32_t> result;
BOOST_TEST(parse(str, parser, char_ - digit, result));
BOOST_TEST(
result == std::vector<uint32_t>({'0', '9', 0x0660, 0x0669}));
}
// hex_digit_
{
constexpr auto parser = +hex_digit;
std::u32string str = U"a/09:A\uff0f\uff10\uff19\uff1a";
std::vector<uint32_t> result;
BOOST_TEST(parse(str, parser, char_ - hex_digit, result));
BOOST_TEST(
result == std::vector<uint32_t>(
{'a', '0', '9', 'A', U'\uff10', U'\uff19'}));
}
// control_
{
constexpr auto parser = +control;
std::u32string str = U"\u0001\u001f\u0020\u007e\u007f\u009f\u00a0";
std::vector<uint32_t> result;
BOOST_TEST(parse(str, parser, char_ - control, result));
BOOST_TEST(
result == std::vector<uint32_t>({1, 0x001f, 0x007f, 0x009f}));
}
// punct_
{
auto parser = +punct;
std::u32string str = U"\u0020\u0021\u0fda\u0fdb";
std::vector<uint32_t> result;
BOOST_TEST(parse(str, parser, char_ - punct, result));
BOOST_TEST(result == std::vector<uint32_t>({0x21, 0xfda}));
}
// lower_
{
auto parser = +lower;
std::u32string str = U"aA\u016F\u0170";
std::vector<uint32_t> result;
BOOST_TEST(parse(str, parser, char_ - lower, result));
BOOST_TEST(result == std::vector<uint32_t>({'a', 0x16f}));
}
// upper_
{
auto parser = +upper;
std::u32string str = U"aA\u0105\u0106";
std::vector<uint32_t> result;
BOOST_TEST(parse(str, parser, char_ - upper, result));
BOOST_TEST(result == std::vector<uint32_t>({'A', 0x106}));
}
// no_need_for_sprit_2_hold_directive
{
namespace bp = boost::parser;
std::vector<int> v;
auto result = bp::parse(
"1 2",
bp::repeat(3)[bp::int_] | repeat(2)[bp::int_] >> bp::attr(0),
bp::ws,
v,
bp::trace::on);
BOOST_TEST(result);
BOOST_TEST(v.size() == 3u);
BOOST_TEST(v == std::vector<int>({1, 2, 0}));
}
// raw_doc_example
{
namespace bp = boost::parser;
auto int_parser =
bp::int_ % ','; // ATTR(int_parser) is std::vector<int>
auto subrange_parser =
bp::raw[int_parser]; // ATTR(subrange_parser) is a subrange
// Parse using int_parser, generating integers.
auto ints = bp::parse("1, 2, 3, 4", int_parser, bp::ws);
assert(ints);
assert(*ints == std::vector<int>({1, 2, 3, 4}));
// Parse again using int_parser, but this time generating only the
// subrange matched by int_parser. (prefix_parse() allows matches
// that don't consume the entire input.)
auto const str = std::string("1, 2, 3, 4, a, b, c");
auto first = str.begin();
auto range =
bp::prefix_parse(first, str.end(), subrange_parser, bp::ws);
assert(range);
assert(range->begin() == str.begin());
assert(range->end() == str.begin() + 10);
static_assert(
std::is_same_v<
decltype(range),
std::optional<
BOOST_PARSER_SUBRANGE<std::string::const_iterator>>>);
#if defined(__cpp_char8_t)
auto const u8str = std::u8string(u8"1, 2, 3, 4, a, b, c");
auto u8first = u8str.begin();
auto u8range =
bp::prefix_parse(u8first, u8str.end(), subrange_parser, bp::ws);
assert(u8range);
assert(u8range->begin().base() == u8str.begin());
assert(u8range->end().base() == u8str.begin() + 10);
#endif
}
#if BOOST_PARSER_USE_CONCEPTS
// string_view_doc_example
{
namespace bp = boost::parser;
auto int_parser =
bp::int_ % ','; // ATTR(int_parser) is std::vector<int>
auto sv_parser = bp::string_view[int_parser]; // ATTR(subrange_parser)
// is a string_view
auto const str = std::string("1, 2, 3, 4, a, b, c");
auto first = str.begin();
auto sv1 = bp::prefix_parse(first, str.end(), sv_parser, bp::ws);
assert(sv1);
assert(*sv1 == str.substr(0, 10));
static_assert(
std::is_same_v<decltype(sv1), std::optional<std::string_view>>);
auto sv2 =
bp::parse("1, 2, 3, 4" | bp::as_utf32, sv_parser, bp::ws);
assert(sv2);
assert(*sv2 == "1, 2, 3, 4");
static_assert(
std::is_same_v<decltype(sv2), std::optional<std::string_view>>);
}
#endif
// variant_compat_example
{
struct key_value
{
int key;
double value;
};
namespace bp = boost::parser;
key_value kv;
bp::parse("42 13.0", bp::int_ >> bp::double_, kv); // Ok.
#if 0
std::variant<key_value, double> kv_or_d;
bp::parse("42 13.0", bp::int_ >> bp::double_, kv_or_d); // Error: ill-formed!
#endif
}
// utf_iterator_copy_ctor
{
namespace bp = boost::parser;
char mut_chars[] = "foo";
char const const_chars[] = "bar";
auto mut_view = mut_chars | bp::as_utf8;
auto const_view = const_chars | bp::as_utf8;
auto mut_it = mut_view.begin();
auto mut_last = mut_view.end();
auto const_it = const_view.begin();
auto const_last = const_view.begin();
const_it = mut_it;
const_last = mut_last;
std::string copy;
copy.resize(3);
std::copy(const_it, const_last, copy.begin());
BOOST_TEST(copy == "foo");
}
// detail_printing
{
// print_printable(char > 127)
{
std::ostringstream oss;
detail::print_printable(oss, char(130));
BOOST_TEST(oss.str() == "'\\x82'");
}
// print_printable(char32_t)
{
std::ostringstream oss;
detail::print_printable(oss, U'a');
BOOST_TEST(oss.str() == "U'a'");
}
{
std::ostringstream oss;
detail::print_printable(oss, U'ß');
BOOST_TEST(oss.str() == "U'\\xdf'");
}
// print(tuple)
{
std::ostringstream oss;
tuple<int, float> tup(42, 13.8);
detail::print(oss, tup);
BOOST_TEST(oss.str() == "(42, 13.8)");
}
// print(optional)
{
std::ostringstream oss;
detail::print(oss, std::optional<int>());
BOOST_TEST(oss.str() == "<<empty>>");
}
{
std::ostringstream oss;
detail::print(oss, std::optional(42));
BOOST_TEST(oss.str() == "42");
}
// print(variant)
{
std::ostringstream oss;
detail::print(oss, std::variant<int, double>());
BOOST_TEST(oss.str() == "<<variant>>");
}
}
return boost::report_errors();
}
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