Merge pull request #226 from tetengo/cpp20

Cpp20

Author: kaorut

configure.ac

@@ -103,7 +103,7 @@ AC_CONFIG_FILES([
 ])
 
 AC_LANG([C++])
-AX_CXX_COMPILE_STDCXX_17([noext], [mandatory])
+#AX_CXX_COMPILE_STDCXX(17, [noext], [mandatory]) # C++20 is not supported yet.
 
 #### Program Checks ####
 AC_PROG_CXX
@@ -122,8 +122,8 @@ AC_ARG_WITH(
 AC_CHECK_PROG(IWYU, include-what-you-use, include-what-you-use)
 test -z $IWYU && \
     AC_MSG_WARN([You cannot check the includes for lack of include-what-you-use.])
-AC_SUBST([IWYU_OPTS_CXX], "-Xiwyu --max_line_length=200 -x c++ -std=c++17 -DIWYU")
-AC_SUBST([IWYU_OPTS_C],   "-Xiwyu --max_line_length=200 -x c -std=c17 -DIWYU")
+AC_SUBST([IWYU_OPTS_CXX], "-Xiwyu --max_line_length=200 -x c++ -DIWYU")
+AC_SUBST([IWYU_OPTS_C],   "-Xiwyu --max_line_length=200 -x c -DIWYU")
 AC_SUBST([IWYU_IMP_PATH], "kogyan/tool/iwyu_mappings.imp")
 
 AC_ARG_WITH(
@@ -198,7 +198,8 @@ AC_HEADER_STDC
 AC_SUBST([CPPFLAGS], "${CPPFLAGS} ${BOOST_CPPFLAGS}")
 
 #### Compilation Options ####
-AC_SUBST([CXXFLAGS], "${CXXFLAGS} -Werror -Wall -Wextra -pedantic-errors")
+AC_SUBST([CXXFLAGS_IWYU], "${CXXFLAGS} -std=c++2a -Werror -Wall -Wextra -pedantic-errors")
+AC_SUBST([CXXFLAGS], "${CXXFLAGS} -std=c++20 -Werror -Wall -Wextra -pedantic-errors")
 AC_SUBST([CFLAGS], "${CFLAGS} -std=c17 -Werror -Wall -Wextra -pedantic-errors")
 
 #### Output ####

executable/setup/src/winmain.cpp

@@ -13,8 +13,6 @@
 
 #include <Windows.h>
 
-#include <boost/algorithm/string.hpp>
-
 #include <tetengo/text/encoder.hpp>
 #include <tetengo/text/encoding/utf16.hpp>
 
@@ -61,7 +59,7 @@ namespace
     {
         const auto msi_path = base_directory / msi_file_name;
         auto       parameters = std::wstring{ L"/i \"" } + msi_path.native() + std::wstring{ L"\"" };
-        if (boost::algorithm::starts_with(locale_name, "Japanese"))
+        if (locale_name.starts_with("Japanese"))
         {
             parameters += L" TRANSFORMS=\":ja.mst\"";
         }

kogyan

@@ -2,10 +2,10 @@
 # Copyright (C) 2019-2022 kaoru  https://www.tetengo.org/
 
 SUBDIRS = \
-    json \
-    lattice \
     platform_dependent \
     text \
+    json \
+    lattice \
     property \
     trie
 

library/Makefile.am

@@ -30,7 +30,7 @@ IWYU_OPTS_CXX += -Xiwyu --mapping_file=${top_srcdir}/${IWYU_IMP_PATH}
 iwyu: ${addsuffix .iwyuout, ${headers} ${sources}}
 
 %.iwyuout: %
-	${IWYU} ${IWYU_OPTS_CXX} ${CPPFLAGS} ${libtetengo_json_la_CPPFLAGS} ${CXXFLAGS} $< 2> ${addsuffix .tmp, $@} || true
+	${IWYU} ${IWYU_OPTS_CXX} ${CPPFLAGS} ${libtetengo_json_la_CPPFLAGS} ${CXXFLAGS_IWYU} $< 2> ${addsuffix .tmp, $@} || true
 	mv -f ${addsuffix .tmp, $@} $@
 
 .PHONY: clean-iwyu

library/json/c/src/Makefile.am

@@ -26,7 +26,7 @@ struct tetengo_json_element_tag
 
     explicit tetengo_json_element_tag(std::unique_ptr<tetengo::json::element>&& p_cpp_element) :
     p_cpp_element_holder{ std::move(p_cpp_element) },
-    p_cpp_element{ p_cpp_element_holder.get() },
+    p_cpp_element{ std::to_address(p_cpp_element_holder) },
     type{},
     file_location{}
     {}

library/json/c/src/tetengo_json_element.hpp

@@ -112,7 +112,7 @@ const tetengo_json_element_t* tetengo_json_jsonParser_peek(const tetengo_json_js
         }
 
         p_parser->p_current_element = std::make_unique<tetengo_json_element_t>(&p_parser->p_cpp_parser->peek());
-        return p_parser->p_current_element.get();
+        return std::to_address(p_parser->p_current_element);
     }
     catch (...)
     {

library/json/c/src/tetengo_json_jsonParser.cpp

@@ -227,7 +227,7 @@ const tetengo_json_reader_t* tetengo_json_reader_baseReader(const tetengo_json_r
 
         p_reader->p_base_reader_placeholder =
             std::make_unique<tetengo_json_reader_t>(&p_reader->cpp_reader().base_reader());
-        return p_reader->p_base_reader_placeholder.get();
+        return std::to_address(p_reader->p_base_reader_placeholder);
     }
     catch (...)
     {

library/json/c/src/tetengo_json_reader.cpp

@@ -29,7 +29,7 @@ iwyu: ${addsuffix .iwyuout, ${pkg_headers} ${extra_headers}}
 
 %.iwyuout: %
 	mkdir -p ${dir $@}
-	${IWYU} ${IWYU_OPTS_CXX} ${CPPFLAGS} ${iwyu_CPPFLAGS} ${CXXFLAGS} $< 2> ${addsuffix .tmp, $@} || true
+	${IWYU} ${IWYU_OPTS_CXX} ${CPPFLAGS} ${iwyu_CPPFLAGS} ${CXXFLAGS_IWYU} $< 2> ${addsuffix .tmp, $@} || true
 	mv -f ${addsuffix .tmp, $@} $@
 
 .PHONY: clean-iwyu

library/json/cpp/include/tetengo/Makefile.am

@@ -76,9 +76,12 @@ namespace tetengo::json
         */
         reader_iterator& operator++();
 
-        //! Makes operator++(int) visible.
-        using boost::stl_interfaces::iterator_interface<reader_iterator, std::input_iterator_tag, char, char>::
-        operator++;
+        /*!
+            \brief Postincrements the iterator.
+
+            \return The iterator before the incrementation.
+        */
+        reader_iterator operator++(int);
 
 
     private: