DocData: Skip language-specific ClassDoc without methods/constants

Removes the useless `@C#`, `@NativeScript` and `@VisualScript` entries.

(cherry picked from commit ba0db95909)

doc/classes/@GlobalScope.xml

@@ -30,6 +30,9 @@
 		<member name="Geometry" type="Geometry" setter="" getter="">
 			The [Geometry] singleton.
 		</member>
+		<member name="GodotSharp" type="GodotSharp" setter="" getter="">
+			The [GodotSharp] singleton.
+		</member>
 		<member name="IP" type="IP" setter="" getter="">
 			The [IP] singleton.
 		</member>

editor/doc/doc_data.cpp

@@ -643,7 +643,9 @@ void DocData::generate(bool p_basic_types) {
 		}
 	}
 
-	//built in script reference
+	// Built-in script reference.
+	// We only add a doc entry for languages which actually define any built-in
+	// methods or constants.
 
 	{
 
@@ -651,12 +653,11 @@ void DocData::generate(bool p_basic_types) {
 
 			ScriptLanguage *lang = ScriptServer::get_language(i);
 			String cname = "@" + lang->get_name();
-			class_list[cname] = ClassDoc();
+			ClassDoc c;
-			ClassDoc &c = class_list[cname];
 			c.name = cname;
 
+			// Get functions.
 			List<MethodInfo> minfo;
-
 			lang->get_public_functions(&minfo);
 
 			for (List<MethodInfo>::Element *E = minfo.front(); E; E = E->next()) {
@@ -690,6 +691,7 @@ void DocData::generate(bool p_basic_types) {
 				c.methods.push_back(md);
 			}
 
+			// Get constants.
 			List<Pair<String, Variant> > cinfo;
 			lang->get_public_constants(&cinfo);
 
@@ -700,6 +702,13 @@ void DocData::generate(bool p_basic_types) {
 				cd.value = E->get().second;
 				c.constants.push_back(cd);
 			}
+
+			// Skip adding the lang if it doesn't expose anything (e.g. C#).
+			if (c.methods.empty() && c.constants.empty()) {
+				continue;
+			}
+
+			class_list[cname] = c;
 		}
 	}
 }

modules/gdnative/config.py

@@ -8,7 +8,6 @@ def configure(env):
 
 def get_doc_classes():
     return [
-        "@NativeScript",
         "ARVRInterfaceGDNative",
         "GDNative",
         "GDNativeLibrary",

modules/gdnative/doc_classes/@NativeScript.xml

@@ -1,13 +0,0 @@
-<?xml version="1.0" encoding="UTF-8" ?>
-<class name="@NativeScript" version="3.2">
-	<brief_description>
-	</brief_description>
-	<description>
-	</description>
-	<tutorials>
-	</tutorials>
-	<methods>
-	</methods>
-	<constants>
-	</constants>
-</class>

modules/mono/config.py

@@ -57,7 +57,6 @@ def configure(env):
 
 def get_doc_classes():
     return [
-        "@C#",
         "CSharpScript",
         "GodotSharp",
     ]

modules/mono/doc_classes/@C#.xml

@@ -1,13 +0,0 @@
-<?xml version="1.0" encoding="UTF-8" ?>
-<class name="@C#" category="Core" version="3.2">
-	<brief_description>
-	</brief_description>
-	<description>
-	</description>
-	<tutorials>
-	</tutorials>
-	<methods>
-	</methods>
-	<constants>
-	</constants>
-</class>

modules/visual_script/config.py

@@ -8,7 +8,6 @@ def configure(env):
 
 def get_doc_classes():
     return [
-        "@VisualScript",
         "VisualScriptBasicTypeConstant",
         "VisualScriptBuiltinFunc",
         "VisualScriptClassConstant",

modules/visual_script/doc_classes/@VisualScript.xml

@@ -1,15 +0,0 @@
-<?xml version="1.0" encoding="UTF-8" ?>
-<class name="@VisualScript" version="3.2">
-	<brief_description>
-		Built-in visual script functions.
-	</brief_description>
-	<description>
-		A list of built-in visual script functions, see [VisualScriptBuiltinFunc] and [VisualScript].
-	</description>
-	<tutorials>
-	</tutorials>
-	<methods>
-	</methods>
-	<constants>
-	</constants>
-</class>