Implemented CompletionType::COMPLETION_DECLARATION.

Author: PhairZ

editor/plugins/script_text_editor.cpp

@@ -1206,7 +1206,7 @@ void ScriptTextEditor::_show_symbol_tooltip(const String &p_symbol, int p_row, i
 			} break;
 		}
 	}
-
+	
 	// NOTE: See also `ScriptEditor::_get_debug_tooltip()` for documentation tooltips disabled.
 	String debug_value = EditorDebuggerNode::get_singleton()->get_var_value(p_symbol);
 	if (!debug_value.is_empty()) {

modules/gdscript/gdscript_editor.cpp

@@ -4138,6 +4138,7 @@ ::Error GDScriptLanguage::lookup_code(const String &p_code, const String &p_symb
 		case GDScriptParser::COMPLETION_METHOD:
 		case GDScriptParser::COMPLETION_ASSIGN:
 		case GDScriptParser::COMPLETION_CALL_ARGUMENTS:
+		case GDScriptParser::COMPLETION_DECLARATION:
 		case GDScriptParser::COMPLETION_IDENTIFIER:
 		case GDScriptParser::COMPLETION_PROPERTY_METHOD:
 		case GDScriptParser::COMPLETION_SUBSCRIPT: {

modules/gdscript/gdscript_parser.cpp

@@ -1110,6 +1110,8 @@ GDScriptParser::VariableNode *GDScriptParser::parse_variable(bool p_is_static) {
 GDScriptParser::VariableNode *GDScriptParser::parse_variable(bool p_is_static, bool p_allow_property) {
 	VariableNode *variable = alloc_node<VariableNode>();
 
+	make_completion_context(COMPLETION_DECLARATION, nullptr);
+
 	if (!consume(GDScriptTokenizer::Token::IDENTIFIER, R"(Expected variable name after "var".)")) {
 		complete_extents(variable);
 		return nullptr;
@@ -1346,6 +1348,8 @@ void GDScriptParser::parse_property_getter(VariableNode *p_variable) {
 GDScriptParser::ConstantNode *GDScriptParser::parse_constant(bool p_is_static) {
 	ConstantNode *constant = alloc_node<ConstantNode>();
 
+	make_completion_context(COMPLETION_DECLARATION, nullptr);
+
 	if (!consume(GDScriptTokenizer::Token::IDENTIFIER, R"(Expected constant name after "const".)")) {
 		complete_extents(constant);
 		return nullptr;
@@ -1613,6 +1617,7 @@ GDScriptParser::FunctionNode *GDScriptParser::parse_function(bool p_is_static) {
 	FunctionNode *function = alloc_node<FunctionNode>();
 
 	make_completion_context(COMPLETION_OVERRIDE_METHOD, function);
+	make_completion_context(COMPLETION_DECLARATION, nullptr);
 
 	if (!consume(GDScriptTokenizer::Token::IDENTIFIER, R"(Expected function name after "func".)")) {
 		complete_extents(function);

modules/gdscript/gdscript_parser.h

@@ -1294,7 +1294,7 @@ class GDScriptParser {
 		COMPLETION_ATTRIBUTE_METHOD, // After id.| to look for methods.
 		COMPLETION_BUILT_IN_TYPE_CONSTANT_OR_STATIC_METHOD, // Constants inside a built-in type (e.g. Color.BLUE) or static methods (e.g. Color.html).
 		COMPLETION_CALL_ARGUMENTS, // Complete with nodes, input actions, enum values (or usual expressions).
-		// TODO: COMPLETION_DECLARATION, // Potential declaration (var, const, func).
+		COMPLETION_DECLARATION, // Potential declaration (var, const, func).
 		COMPLETION_GET_NODE, // Get node with $ notation.
 		COMPLETION_IDENTIFIER, // List available identifiers in scope.
 		COMPLETION_INHERIT_TYPE, // Type after extends. Exclude non-viable types (built-ins, enums, void). Includes subtypes using the argument index.