Added support for optionally using LSP for c-like languages. Also bumped c++ version to 20 for project

CMakeLists.txt

@@ -1,7 +1,7 @@
 cmake_minimum_required(VERSION 3.5)
 
 project(juci)
-set(JUCI_VERSION "1.8.0.2")
+set(JUCI_VERSION "1.8.0.3")
 
 set(CPACK_PACKAGE_NAME "jucipp")
 set(CPACK_PACKAGE_CONTACT "Ole Christian Eidheim <eidheim@gmail.com>")
@@ -26,7 +26,7 @@ endif(CCACHE_FOUND)
 
 include(CPack)
 
-set(CMAKE_CXX_STANDARD 14)
+set(CMAKE_CXX_STANDARD 20)
 
 add_compile_options(-pthread -Wall -Wextra -Wno-unused-parameter -Wno-deprecated-declarations)
 add_definitions(-DJUCI_VERSION="${JUCI_VERSION}")

src/config.cpp

@@ -155,6 +155,8 @@ void Config::read(const JSON &cfg) {
   source.auto_reload_changed_files = source_json.boolean("auto_reload_changed_files", JSON::ParseOptions::accept_string);
   source.search_for_selection = source_json.boolean("search_for_selection", JSON::ParseOptions::accept_string);
   source.tooltip_top_offset = source_json.integer("tooltip_top_offset", JSON::ParseOptions::accept_string);
+  source.use_lsp_for_c_languages = source_json.boolean("use_lsp_for_c_languages", JSON::ParseOptions::accept_string);
+  source.c_lsp_binary_name = source_json.string("c_lsp_binary_name");
   source.clang_format_style = source_json.string("clang_format_style");
   source.clang_usages_threads = static_cast<unsigned>(source_json.integer("clang_usages_threads", JSON::ParseOptions::accept_string));
   source.clang_tidy_enable = source_json.boolean("clang_tidy_enable", JSON::ParseOptions::accept_string);
@@ -301,6 +303,8 @@ std::string Config::default_config() {
     "auto_reload_changed_files": true,
     "search_for_selection": true,
     "tooltip_top_offset": 0,
+    "use_lsp_for_c_languages": false,
+    "c_lsp_binary_name": "",
     "clang_format_style_comment": "IndentWidth, AccessModifierOffset and UseTab are set automatically. See http://clang.llvm.org/docs/ClangFormatStyleOptions.html",
     "clang_format_style": "ColumnLimit: 0, NamespaceIndentation: All",
     "clang_tidy_enable_comment": "Enable clang-tidy in new C/C++ buffers",

src/config.hpp

@@ -99,6 +99,9 @@ public:
     bool search_for_selection;
     int tooltip_top_offset;
 
+    bool use_lsp_for_c_languages;
+    std::string c_lsp_binary_name;
+
     std::string clang_format_style;
     unsigned clang_usages_threads;
 

src/notebook.cpp

@@ -207,8 +207,12 @@ bool Notebook::open(const boost::filesystem::path &file_path_, Position position
   }
 
   size_t source_views_previous_size = source_views.size();
-  if(language_id == "chdr" || language_id == "cpphdr" || language_id == "c" || language_id == "cpp" || language_id == "objc")
+  if(Source::ClangView::IsCompatibleWithLanguage(language_id)) {
+    if(Config::get().source.use_lsp_for_c_languages && Config::get().source.c_lsp_binary_name.length() > 0 && !filesystem::find_executable(Config::get().source.c_lsp_binary_name).empty())
+      source_views.emplace_back(new Source::LanguageProtocolView(file_path, language, language_protocol_language_id, filesystem::escape_argument(Config::get().source.c_lsp_binary_name)));
+    else
       source_views.emplace_back(new Source::ClangView(file_path, language));
+  }
   else if(language && !language_protocol_language_id.empty() && !filesystem::find_executable(language_protocol_language_id + "-language-server").empty())
     source_views.emplace_back(new Source::LanguageProtocolView(file_path, language, language_protocol_language_id, filesystem::escape_argument(language_protocol_language_id + "-language-server")));
   else if(language && language_protocol_language_id == "rust") {

src/source_clang.cpp

@@ -18,6 +18,11 @@
 
 const std::regex include_regex(R"(^[ \t]*#[ \t]*include[ \t]*[<"]([^<>"]+)[>"].*$)", std::regex::optimize);
 
+const std::set<std::string> Source::ClangView::CTypeLanguages = {"c", "cpp", "chdr", "cpphdr", "objc"};
+bool Source::ClangView::IsCompatibleWithLanguage(const std::string &languageId) {
+  return Source::ClangView::CTypeLanguages.contains(languageId);
+}
+
 Source::ClangViewParse::ClangViewParse(const boost::filesystem::path &file_path, const Glib::RefPtr<Gsv::Language> &language)
     : BaseView(file_path, language), Source::View(file_path, language) {
   Usages::Clang::erase_cache(file_path);

src/source_clang.hpp

@@ -118,10 +118,13 @@ namespace Source {
     void full_reparse() override;
     void async_delete();
 
+    static bool IsCompatibleWithLanguage(const std::string &languageId);
+
   private:
     Glib::Dispatcher do_delete_object;
     std::thread delete_thread;
     std::thread full_reparse_thread;
     bool full_reparse_running = false;
+    static const std::set<std::string> CTypeLanguages;
   };
 } // namespace Source