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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-27 18:24:20 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-27 18:24:20 +0000
commit483eb2f56657e8e7f419ab1a4fab8dce9ade8609 (patch)
treee5d88d25d870d5dedacb6bbdbe2a966086a0a5cf /src/boost/libs/spirit/test/qi/attribute1.cpp
parentInitial commit. (diff)
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Adding upstream version 14.2.21.upstream/14.2.21upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'src/boost/libs/spirit/test/qi/attribute1.cpp')
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1 files changed, 177 insertions, 0 deletions
diff --git a/src/boost/libs/spirit/test/qi/attribute1.cpp b/src/boost/libs/spirit/test/qi/attribute1.cpp
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+/*=============================================================================
+ Copyright (c) 2001-2011 Hartmut Kaiser
+ Copyright (c) 2001-2011 Joel de Guzman
+
+ Distributed under the Boost Software License, Version 1.0. (See accompanying
+ file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
+=============================================================================*/
+
+#include <boost/config/warning_disable.hpp>
+#include <boost/detail/lightweight_test.hpp>
+
+#include <boost/spirit/include/phoenix_limits.hpp>
+
+#include <boost/fusion/include/struct.hpp>
+#include <boost/fusion/include/nview.hpp>
+
+#include <boost/spirit/include/qi_char.hpp>
+#include <boost/spirit/include/qi_string.hpp>
+#include <boost/spirit/include/qi_numeric.hpp>
+#include <boost/spirit/include/qi_operator.hpp>
+#include <boost/spirit/include/qi_nonterminal.hpp>
+#include <boost/spirit/include/qi_auxiliary.hpp>
+
+#include <iostream>
+#include <vector>
+#include <string>
+#include "test.hpp"
+
+///////////////////////////////////////////////////////////////////////////////
+struct test_data
+{
+ std::string s1;
+ std::string s2;
+ int i1;
+ double d1;
+ std::string s3;
+};
+
+BOOST_FUSION_ADAPT_STRUCT(
+ test_data,
+ (int, i1)
+ (std::string, s1)
+ (std::string, s2)
+ (std::string, s3)
+ (double, d1)
+)
+
+///////////////////////////////////////////////////////////////////////////////
+struct test_int_data1
+{
+ int i;
+};
+
+// we provide a custom attribute transformation taking copy of the actual
+// attribute value, simulating more complex type transformations
+namespace boost { namespace spirit { namespace traits
+{
+ template <>
+ struct transform_attribute<test_int_data1, int, qi::domain>
+ {
+ typedef int type;
+ static int pre(test_int_data1& d) { return d.i; }
+ static void post(test_int_data1& d, int i) { d.i = i; }
+ static void fail(test_int_data1&) {}
+ };
+}}}
+
+///////////////////////////////////////////////////////////////////////////////
+struct test_int_data2
+{
+ int i;
+};
+
+// we provide a simple custom attribute transformation utilizing passing the
+// actual attribute by reference
+namespace boost { namespace spirit { namespace traits
+{
+ template <>
+ struct transform_attribute<test_int_data2, int, qi::domain>
+ {
+ typedef int& type;
+ static int& pre(test_int_data2& d) { return d.i; }
+ static void post(test_int_data2&, int const&) {}
+ static void fail(test_int_data2&) {}
+ };
+}}}
+
+///////////////////////////////////////////////////////////////////////////////
+int
+main()
+{
+ using spirit_test::test_attr;
+ namespace qi = boost::spirit::qi;
+ namespace fusion = boost::fusion;
+
+ // testing attribute reordering in a fusion sequence as explicit attribute
+ {
+ typedef fusion::result_of::as_nview<test_data, 1, 0, 4>::type
+ test_view;
+
+ test_data d1 = { "", "", 0, 0.0, "" };
+ test_view v1 = fusion::as_nview<1, 0, 4>(d1);
+ BOOST_TEST(test_attr("s1,2,1.5",
+ *(qi::char_ - ',') >> ',' >> qi::int_ >> ',' >> qi::double_, v1));
+ BOOST_TEST(d1.i1 == 2 && d1.s1 == "s1" && d1.d1 == 1.5);
+
+ test_data d2 = { "", "", 0, 0.0, "" };
+ test_view v2 = fusion::as_nview<1, 0, 4>(d2);
+ BOOST_TEST(test_attr("s1, 2, 1.5 ",
+ *(qi::char_ - ',') >> ',' >> qi::int_ >> ',' >> qi::double_,
+ v2, qi::space));
+ BOOST_TEST(d2.i1 == 2 && d2.s1 == "s1" && d2.d1 == 1.5);
+ }
+
+ {
+ // this won't work without the second template argument as *digit
+ // exposes a vector<char> as its attribute
+ std::string str;
+ BOOST_TEST(test_attr("123"
+ , qi::attr_cast<std::string, std::string>(*qi::digit), str));
+ BOOST_TEST(str == "123");
+ }
+
+ // testing attribute reordering in a fusion sequence involving a rule
+ {
+ typedef fusion::result_of::as_nview<test_data, 1, 0, 4>::type
+ test_view;
+ std::vector<test_data> v;
+
+ qi::rule<char const*, test_view()> r1 =
+ *(qi::char_ - ',') >> ',' >> qi::int_ >> ',' >> qi::double_;
+
+ BOOST_TEST(test_attr("s1,2,1.5\ns2,4,3.5", r1 % qi::eol, v));
+ BOOST_TEST(v.size() == 2 &&
+ v[0].i1 == 2 && v[0].s1 == "s1" && v[0].d1 == 1.5 &&
+ v[1].i1 == 4 && v[1].s1 == "s2" && v[1].d1 == 3.5);
+
+ qi::rule<char const*, test_view(), qi::blank_type> r2 =
+ *(qi::char_ - ',') >> ',' >> qi::int_ >> ',' >> qi::double_;
+
+ v.clear();
+ BOOST_TEST(test_attr("s1, 2, 1.5 \n s2, 4, 3.5", r2 % qi::eol, v, qi::blank));
+ BOOST_TEST(v.size() == 2 &&
+ v[0].i1 == 2 && v[0].s1 == "s1" && v[0].d1 == 1.5 &&
+ v[1].i1 == 4 && v[1].s1 == "s2" && v[1].d1 == 3.5);
+ }
+
+ // testing explicit transformation if attribute needs to be copied
+ {
+ test_int_data1 d = { 0 };
+ BOOST_TEST(test_attr("1", qi::attr_cast(qi::int_), d));
+ BOOST_TEST(d.i == 1);
+ BOOST_TEST(test_attr("2", qi::attr_cast<test_int_data1>(qi::int_), d));
+ BOOST_TEST(d.i == 2);
+ BOOST_TEST(test_attr("3", qi::attr_cast<test_int_data1, int>(qi::int_), d));
+ BOOST_TEST(d.i == 3);
+ }
+
+ {
+ std::vector<test_int_data1> v;
+
+ BOOST_TEST(test_attr("1,2", qi::attr_cast(qi::int_) % ',', v));
+ BOOST_TEST(v.size() == 2 && v[0].i == 1 && v[1].i == 2);
+
+ v.clear();
+ BOOST_TEST(test_attr("1,2"
+ , qi::attr_cast<test_int_data1>(qi::int_) % ',', v));
+ BOOST_TEST(v.size() == 2 && v[0].i == 1 && v[1].i == 2);
+
+ v.clear();
+ BOOST_TEST(test_attr("1,2"
+ , qi::attr_cast<test_int_data1, int>(qi::int_) % ',', v));
+ BOOST_TEST(v.size() == 2 && v[0].i == 1 && v[1].i == 2);
+ }
+
+ return boost::report_errors();
+}