Language protocol: improved hover and completion item documentation

src/source_language_protocol.cc

@@ -829,18 +829,26 @@ void Source::LanguageProtocolView::show_type_tooltips(const Gdk::Rectangle &rect
   auto offset=iter.get_offset();
   client->write_request("textDocument/hover", "\"textDocument\": {\"uri\":\"file://"+file_path.string()+"\"}, \"position\": {\"line\": "+std::to_string(iter.get_line())+", \"character\": "+std::to_string(iter.get_line_offset())+"}", [this, offset](const boost::property_tree::ptree &result, bool error) {
     if(!error) {
-      auto contents=result.get_child("contents", boost::property_tree::ptree());
-      auto it=contents.begin();
-      if(it!=contents.end()) {
-        auto value=it->second.get<std::string>("value", "");
-        if(!value.empty()) {
-          dispatcher.post([this, offset, value=std::move(value)] {
+      std::string content;
+      {
+        auto contents_pt=result.get_child("contents", boost::property_tree::ptree());
+        auto contents_it=contents_pt.begin();
+        if(contents_it!=contents_pt.end())
+          content=contents_it->second.get<std::string>("value", "");
+      }
+      if(content.empty()) {
+        auto contents_it=result.find("contents");
+        if(contents_it!=result.not_found())
+          content=contents_it->second.get_value<std::string>("");
+      }
+      if(!content.empty()) {
+        dispatcher.post([this, offset, content=std::move(content)] {
           if(offset>=get_buffer()->get_char_count())
             return;
           type_tooltips.clear();
-            auto create_tooltip_buffer=[this, offset, value=std::move(value)]() {
+          auto create_tooltip_buffer=[this, offset, content=std::move(content)]() {
             auto tooltip_buffer=Gtk::TextBuffer::create(get_buffer()->get_tag_table());
-              tooltip_buffer->insert_with_tag(tooltip_buffer->get_insert()->get_iter(), "Type: "+value, "def:note");
+            tooltip_buffer->insert_with_tag(tooltip_buffer->get_insert()->get_iter(), content, "def:note");
             
 #ifdef JUCI_ENABLE_DEBUG
             if(language_id=="rust" && capabilities.definition) {
@@ -888,7 +896,6 @@ void Source::LanguageProtocolView::show_type_tooltips(const Gdk::Rectangle &rect
         });
       }
     }
-    }
   });
 }
 
@@ -1072,10 +1079,16 @@ void Source::LanguageProtocolView::setup_autocomplete() {
           for(auto it=begin;it!=end;++it) {
             auto label=it->second.get<std::string>("label", "");
             auto detail=it->second.get<std::string>("detail", "");
+            auto documentation=it->second.get<std::string>("documentation", "");
             auto insert=it->second.get<std::string>("insertText", label);
             if(!label.empty()) {
               autocomplete.rows.emplace_back(std::move(label));
               autocomplete_comment.emplace_back(std::move(detail));
+              if(!documentation.empty()) {
+                if(!autocomplete_comment.back().empty())
+                  autocomplete_comment.back()+="\n\n";
+                autocomplete_comment.back()+=documentation;
+              }
               autocomplete_insert.emplace_back(std::move(insert));
             }
           }