diff options
Diffstat (limited to 'modules/gdscript/gdscript_parser.cpp')
-rw-r--r-- | modules/gdscript/gdscript_parser.cpp | 183 |
1 files changed, 112 insertions, 71 deletions
diff --git a/modules/gdscript/gdscript_parser.cpp b/modules/gdscript/gdscript_parser.cpp index ef1a282e51..dcf5d35e36 100644 --- a/modules/gdscript/gdscript_parser.cpp +++ b/modules/gdscript/gdscript_parser.cpp @@ -5,8 +5,8 @@ /* GODOT ENGINE */ /* https://godotengine.org */ /*************************************************************************/ -/* Copyright (c) 2007-2019 Juan Linietsky, Ariel Manzur. */ -/* Copyright (c) 2014-2019 Godot Engine contributors (cf. AUTHORS.md) */ +/* Copyright (c) 2007-2020 Juan Linietsky, Ariel Manzur. */ +/* Copyright (c) 2014-2020 Godot Engine contributors (cf. AUTHORS.md). */ /* */ /* Permission is hereby granted, free of charge, to any person obtaining */ /* a copy of this software and associated documentation files (the */ @@ -2689,6 +2689,7 @@ void GDScriptParser::_transform_match_statment(MatchNode *p_match_statement) { op->op = OperatorNode::OP_ASSIGN; op->arguments.push_back(id2); op->arguments.push_back(local_var->assign); + local_var->assign_op = op; branch->body->statements.push_front(op); branch->body->statements.push_front(local_var); @@ -2866,7 +2867,6 @@ void GDScriptParser::_parse_block(BlockNode *p_block, bool p_static) { assigned = _get_default_value_for_type(lv->datatype, var_line); } - lv->assign = assigned; //must be added later, to avoid self-referencing. p_block->variables.insert(n, lv); @@ -4045,7 +4045,13 @@ void GDScriptParser::_parse_class(ClassNode *p_class) { if (tokenizer->get_token() == GDScriptTokenizer::TK_PARENTHESIS_OPEN) { - tokenizer->advance(); +#define _ADVANCE_AND_CONSUME_NEWLINES \ + do { \ + tokenizer->advance(); \ + } while (tokenizer->get_token() == GDScriptTokenizer::TK_NEWLINE) + + _ADVANCE_AND_CONSUME_NEWLINES; + parenthesis++; String hint_prefix = ""; bool is_arrayed = false; @@ -4075,11 +4081,11 @@ void GDScriptParser::_parse_class(ClassNode *p_class) { } current_export.type = type; current_export.usage |= PROPERTY_USAGE_SCRIPT_VARIABLE; - tokenizer->advance(); + _ADVANCE_AND_CONSUME_NEWLINES; if (tokenizer->get_token() == GDScriptTokenizer::TK_COMMA) { // hint expected next! - tokenizer->advance(); + _ADVANCE_AND_CONSUME_NEWLINES; switch (type) { @@ -4087,7 +4093,7 @@ void GDScriptParser::_parse_class(ClassNode *p_class) { if (tokenizer->get_token() == GDScriptTokenizer::TK_IDENTIFIER && tokenizer->get_token_identifier() == "FLAGS") { - tokenizer->advance(); + _ADVANCE_AND_CONSUME_NEWLINES; if (tokenizer->get_token() == GDScriptTokenizer::TK_PARENTHESIS_CLOSE) { WARN_DEPRECATED_MSG("Exporting bit flags hint requires string constants."); @@ -4099,7 +4105,7 @@ void GDScriptParser::_parse_class(ClassNode *p_class) { } current_export.hint = PROPERTY_HINT_FLAGS; - tokenizer->advance(); + _ADVANCE_AND_CONSUME_NEWLINES; bool first = true; while (true) { @@ -4118,7 +4124,7 @@ void GDScriptParser::_parse_class(ClassNode *p_class) { current_export.hint_string += c.xml_escape(); - tokenizer->advance(); + _ADVANCE_AND_CONSUME_NEWLINES; if (tokenizer->get_token() == GDScriptTokenizer::TK_PARENTHESIS_CLOSE) break; @@ -4127,7 +4133,7 @@ void GDScriptParser::_parse_class(ClassNode *p_class) { _set_error("Expected \")\" or \",\" in the named bit flags hint."); return; } - tokenizer->advance(); + _ADVANCE_AND_CONSUME_NEWLINES; } break; @@ -4135,7 +4141,7 @@ void GDScriptParser::_parse_class(ClassNode *p_class) { if (tokenizer->get_token() == GDScriptTokenizer::TK_IDENTIFIER && tokenizer->get_token_identifier() == "LAYERS_2D_RENDER") { - tokenizer->advance(); + _ADVANCE_AND_CONSUME_NEWLINES; if (tokenizer->get_token() != GDScriptTokenizer::TK_PARENTHESIS_CLOSE) { _set_error("Expected \")\" in the layers 2D render hint."); return; @@ -4146,7 +4152,7 @@ void GDScriptParser::_parse_class(ClassNode *p_class) { if (tokenizer->get_token() == GDScriptTokenizer::TK_IDENTIFIER && tokenizer->get_token_identifier() == "LAYERS_2D_PHYSICS") { - tokenizer->advance(); + _ADVANCE_AND_CONSUME_NEWLINES; if (tokenizer->get_token() != GDScriptTokenizer::TK_PARENTHESIS_CLOSE) { _set_error("Expected \")\" in the layers 2D physics hint."); return; @@ -4157,7 +4163,7 @@ void GDScriptParser::_parse_class(ClassNode *p_class) { if (tokenizer->get_token() == GDScriptTokenizer::TK_IDENTIFIER && tokenizer->get_token_identifier() == "LAYERS_3D_RENDER") { - tokenizer->advance(); + _ADVANCE_AND_CONSUME_NEWLINES; if (tokenizer->get_token() != GDScriptTokenizer::TK_PARENTHESIS_CLOSE) { _set_error("Expected \")\" in the layers 3D render hint."); return; @@ -4168,7 +4174,7 @@ void GDScriptParser::_parse_class(ClassNode *p_class) { if (tokenizer->get_token() == GDScriptTokenizer::TK_IDENTIFIER && tokenizer->get_token_identifier() == "LAYERS_3D_PHYSICS") { - tokenizer->advance(); + _ADVANCE_AND_CONSUME_NEWLINES; if (tokenizer->get_token() != GDScriptTokenizer::TK_PARENTHESIS_CLOSE) { _set_error("Expected \")\" in the layers 3D physics hint."); return; @@ -4198,7 +4204,7 @@ void GDScriptParser::_parse_class(ClassNode *p_class) { current_export.hint_string += c.xml_escape(); - tokenizer->advance(); + _ADVANCE_AND_CONSUME_NEWLINES; if (tokenizer->get_token() == GDScriptTokenizer::TK_PARENTHESIS_CLOSE) break; @@ -4208,7 +4214,7 @@ void GDScriptParser::_parse_class(ClassNode *p_class) { return; } - tokenizer->advance(); + _ADVANCE_AND_CONSUME_NEWLINES; } break; @@ -4220,7 +4226,7 @@ void GDScriptParser::_parse_class(ClassNode *p_class) { if (tokenizer->get_token() == GDScriptTokenizer::TK_IDENTIFIER && tokenizer->get_token_identifier() == "EASE") { current_export.hint = PROPERTY_HINT_EXP_EASING; - tokenizer->advance(); + _ADVANCE_AND_CONSUME_NEWLINES; if (tokenizer->get_token() != GDScriptTokenizer::TK_PARENTHESIS_CLOSE) { _set_error("Expected \")\" in the hint."); return; @@ -4232,7 +4238,7 @@ void GDScriptParser::_parse_class(ClassNode *p_class) { if (tokenizer->get_token() == GDScriptTokenizer::TK_IDENTIFIER && tokenizer->get_token_identifier() == "EXP") { current_export.hint = PROPERTY_HINT_EXP_RANGE; - tokenizer->advance(); + _ADVANCE_AND_CONSUME_NEWLINES; if (tokenizer->get_token() == GDScriptTokenizer::TK_PARENTHESIS_CLOSE) break; @@ -4240,7 +4246,7 @@ void GDScriptParser::_parse_class(ClassNode *p_class) { _set_error("Expected \")\" or \",\" in the exponential range hint."); return; } - tokenizer->advance(); + _ADVANCE_AND_CONSUME_NEWLINES; } else current_export.hint = PROPERTY_HINT_RANGE; @@ -4248,7 +4254,7 @@ void GDScriptParser::_parse_class(ClassNode *p_class) { if (tokenizer->get_token() == GDScriptTokenizer::TK_OP_SUB) { sign = -1; - tokenizer->advance(); + _ADVANCE_AND_CONSUME_NEWLINES; } if (tokenizer->get_token() != GDScriptTokenizer::TK_CONSTANT || !tokenizer->get_token_constant().is_num()) { @@ -4258,7 +4264,7 @@ void GDScriptParser::_parse_class(ClassNode *p_class) { } current_export.hint_string = rtos(sign * double(tokenizer->get_token_constant())); - tokenizer->advance(); + _ADVANCE_AND_CONSUME_NEWLINES; if (tokenizer->get_token() == GDScriptTokenizer::TK_PARENTHESIS_CLOSE) { current_export.hint_string = "0," + current_export.hint_string; @@ -4272,12 +4278,12 @@ void GDScriptParser::_parse_class(ClassNode *p_class) { return; } - tokenizer->advance(); + _ADVANCE_AND_CONSUME_NEWLINES; sign = 1.0; if (tokenizer->get_token() == GDScriptTokenizer::TK_OP_SUB) { sign = -1; - tokenizer->advance(); + _ADVANCE_AND_CONSUME_NEWLINES; } if (tokenizer->get_token() != GDScriptTokenizer::TK_CONSTANT || !tokenizer->get_token_constant().is_num()) { @@ -4288,7 +4294,7 @@ void GDScriptParser::_parse_class(ClassNode *p_class) { } current_export.hint_string += "," + rtos(sign * double(tokenizer->get_token_constant())); - tokenizer->advance(); + _ADVANCE_AND_CONSUME_NEWLINES; if (tokenizer->get_token() == GDScriptTokenizer::TK_PARENTHESIS_CLOSE) break; @@ -4300,11 +4306,11 @@ void GDScriptParser::_parse_class(ClassNode *p_class) { return; } - tokenizer->advance(); + _ADVANCE_AND_CONSUME_NEWLINES; sign = 1.0; if (tokenizer->get_token() == GDScriptTokenizer::TK_OP_SUB) { sign = -1; - tokenizer->advance(); + _ADVANCE_AND_CONSUME_NEWLINES; } if (tokenizer->get_token() != GDScriptTokenizer::TK_CONSTANT || !tokenizer->get_token_constant().is_num()) { @@ -4315,7 +4321,7 @@ void GDScriptParser::_parse_class(ClassNode *p_class) { } current_export.hint_string += "," + rtos(sign * double(tokenizer->get_token_constant())); - tokenizer->advance(); + _ADVANCE_AND_CONSUME_NEWLINES; } break; case Variant::STRING: { @@ -4340,7 +4346,7 @@ void GDScriptParser::_parse_class(ClassNode *p_class) { first = false; current_export.hint_string += c.xml_escape(); - tokenizer->advance(); + _ADVANCE_AND_CONSUME_NEWLINES; if (tokenizer->get_token() == GDScriptTokenizer::TK_PARENTHESIS_CLOSE) break; @@ -4349,7 +4355,7 @@ void GDScriptParser::_parse_class(ClassNode *p_class) { _set_error("Expected \")\" or \",\" in the enumeration hint."); return; } - tokenizer->advance(); + _ADVANCE_AND_CONSUME_NEWLINES; } break; @@ -4357,13 +4363,13 @@ void GDScriptParser::_parse_class(ClassNode *p_class) { if (tokenizer->get_token() == GDScriptTokenizer::TK_IDENTIFIER && tokenizer->get_token_identifier() == "DIR") { - tokenizer->advance(); + _ADVANCE_AND_CONSUME_NEWLINES; if (tokenizer->get_token() == GDScriptTokenizer::TK_PARENTHESIS_CLOSE) current_export.hint = PROPERTY_HINT_DIR; else if (tokenizer->get_token() == GDScriptTokenizer::TK_COMMA) { - tokenizer->advance(); + _ADVANCE_AND_CONSUME_NEWLINES; if (tokenizer->get_token() != GDScriptTokenizer::TK_IDENTIFIER || !(tokenizer->get_token_identifier() == "GLOBAL")) { _set_error("Expected \"GLOBAL\" after comma in the directory hint."); @@ -4374,7 +4380,7 @@ void GDScriptParser::_parse_class(ClassNode *p_class) { return; } current_export.hint = PROPERTY_HINT_GLOBAL_DIR; - tokenizer->advance(); + _ADVANCE_AND_CONSUME_NEWLINES; if (tokenizer->get_token() != GDScriptTokenizer::TK_PARENTHESIS_CLOSE) { _set_error("Expected \")\" in the hint."); @@ -4390,11 +4396,11 @@ void GDScriptParser::_parse_class(ClassNode *p_class) { if (tokenizer->get_token() == GDScriptTokenizer::TK_IDENTIFIER && tokenizer->get_token_identifier() == "FILE") { current_export.hint = PROPERTY_HINT_FILE; - tokenizer->advance(); + _ADVANCE_AND_CONSUME_NEWLINES; if (tokenizer->get_token() == GDScriptTokenizer::TK_COMMA) { - tokenizer->advance(); + _ADVANCE_AND_CONSUME_NEWLINES; if (tokenizer->get_token() == GDScriptTokenizer::TK_IDENTIFIER && tokenizer->get_token_identifier() == "GLOBAL") { @@ -4403,12 +4409,12 @@ void GDScriptParser::_parse_class(ClassNode *p_class) { return; } current_export.hint = PROPERTY_HINT_GLOBAL_FILE; - tokenizer->advance(); + _ADVANCE_AND_CONSUME_NEWLINES; if (tokenizer->get_token() == GDScriptTokenizer::TK_PARENTHESIS_CLOSE) break; else if (tokenizer->get_token() == GDScriptTokenizer::TK_COMMA) - tokenizer->advance(); + _ADVANCE_AND_CONSUME_NEWLINES; else { _set_error("Expected \")\" or \",\" in the hint."); return; @@ -4424,7 +4430,7 @@ void GDScriptParser::_parse_class(ClassNode *p_class) { return; } current_export.hint_string = tokenizer->get_token_constant(); - tokenizer->advance(); + _ADVANCE_AND_CONSUME_NEWLINES; } if (tokenizer->get_token() != GDScriptTokenizer::TK_PARENTHESIS_CLOSE) { @@ -4437,7 +4443,7 @@ void GDScriptParser::_parse_class(ClassNode *p_class) { if (tokenizer->get_token() == GDScriptTokenizer::TK_IDENTIFIER && tokenizer->get_token_identifier() == "MULTILINE") { current_export.hint = PROPERTY_HINT_MULTILINE_TEXT; - tokenizer->advance(); + _ADVANCE_AND_CONSUME_NEWLINES; if (tokenizer->get_token() != GDScriptTokenizer::TK_PARENTHESIS_CLOSE) { _set_error("Expected \")\" in the hint."); return; @@ -4464,7 +4470,7 @@ void GDScriptParser::_parse_class(ClassNode *p_class) { _set_error("Color type hint expects RGB or RGBA as hints."); return; } - tokenizer->advance(); + _ADVANCE_AND_CONSUME_NEWLINES; } break; default: { @@ -4515,11 +4521,11 @@ void GDScriptParser::_parse_class(ClassNode *p_class) { bool is_flags = false; if (tokenizer->get_token() == GDScriptTokenizer::TK_COMMA) { - tokenizer->advance(); + _ADVANCE_AND_CONSUME_NEWLINES; if (tokenizer->get_token() == GDScriptTokenizer::TK_IDENTIFIER && tokenizer->get_token_identifier() == "FLAGS") { is_flags = true; - tokenizer->advance(); + _ADVANCE_AND_CONSUME_NEWLINES; } else { current_export = PropertyInfo(); _set_error("Expected \"FLAGS\" after comma."); @@ -4563,6 +4569,9 @@ void GDScriptParser::_parse_class(ClassNode *p_class) { return; } + tokenizer->advance(); + parenthesis--; + if (is_arrayed) { hint_prefix += itos(current_export.type); if (current_export.hint) { @@ -4572,8 +4581,7 @@ void GDScriptParser::_parse_class(ClassNode *p_class) { current_export.hint = PROPERTY_HINT_TYPE_STRING; current_export.type = Variant::ARRAY; } - - tokenizer->advance(); +#undef _ADVANCE_AND_CONSUME_NEWLINES } if (tokenizer->get_token() != GDScriptTokenizer::TK_PR_VAR && tokenizer->get_token() != GDScriptTokenizer::TK_PR_ONREADY && tokenizer->get_token() != GDScriptTokenizer::TK_PR_REMOTE && tokenizer->get_token() != GDScriptTokenizer::TK_PR_MASTER && tokenizer->get_token() != GDScriptTokenizer::TK_PR_PUPPET && tokenizer->get_token() != GDScriptTokenizer::TK_PR_SYNC && tokenizer->get_token() != GDScriptTokenizer::TK_PR_REMOTESYNC && tokenizer->get_token() != GDScriptTokenizer::TK_PR_MASTERSYNC && tokenizer->get_token() != GDScriptTokenizer::TK_PR_PUPPETSYNC && tokenizer->get_token() != GDScriptTokenizer::TK_PR_SLAVE) { @@ -6957,6 +6965,17 @@ GDScriptParser::DataType GDScriptParser::_reduce_function_call_type(const Operat if (error_set) return DataType(); + // Special case: check copy constructor. Those are defined implicitly in Variant. + if (par_types.size() == 1) { + if (!par_types[0].has_type || (par_types[0].kind == DataType::BUILTIN && par_types[0].builtin_type == tn->vtype)) { + DataType result; + result.has_type = true; + result.kind = DataType::BUILTIN; + result.builtin_type = tn->vtype; + return result; + } + } + bool match = false; List<MethodInfo> constructors; Variant::get_constructor_list(tn->vtype, &constructors); @@ -7629,6 +7648,11 @@ GDScriptParser::DataType GDScriptParser::_reduce_identifier_type(const DataType void GDScriptParser::_check_class_level_types(ClassNode *p_class) { + // Names of internal object properties that we check to avoid overriding them. + // "__meta__" could also be in here, but since it doesn't really affect object metadata, + // it is okay to override it on script. + StringName script_name = CoreStringNames::get_singleton()->_script; + _mark_line_as_safe(p_class->line); // Constants @@ -7649,8 +7673,9 @@ void GDScriptParser::_check_class_level_types(ClassNode *p_class) { c.expression->set_datatype(expr); DataType tmp; - if (_get_member_type(p_class->base_type, E->key(), tmp)) { - _set_error("The member \"" + String(E->key()) + "\" already exists in a parent class.", c.expression->line); + const StringName &constant_name = E->key(); + if (constant_name == script_name || _get_member_type(p_class->base_type, constant_name, tmp)) { + _set_error("The member \"" + String(constant_name) + "\" already exists in a parent class.", c.expression->line); return; } } @@ -7671,7 +7696,7 @@ void GDScriptParser::_check_class_level_types(ClassNode *p_class) { ClassNode::Member &v = p_class->variables.write[i]; DataType tmp; - if (_get_member_type(p_class->base_type, v.identifier, tmp)) { + if (v.identifier == script_name || _get_member_type(p_class->base_type, v.identifier, tmp)) { _set_error("The member \"" + String(v.identifier) + "\" already exists in a parent class.", v.line); return; } @@ -7848,12 +7873,12 @@ void GDScriptParser::_check_function_types(FunctionNode *p_function) { def_type.is_constant = false; p_function->argument_types.write[i] = def_type; } else { - p_function->return_type = _resolve_type(p_function->return_type, p_function->line); + p_function->argument_types.write[i] = _resolve_type(p_function->argument_types[i], p_function->line); if (!_is_type_compatible(p_function->argument_types[i], def_type, true)) { String arg_name = p_function->arguments[i]; _set_error("Value type (" + def_type.to_string() + ") doesn't match the type of argument '" + - arg_name + "' (" + p_function->arguments[i] + ").", + arg_name + "' (" + p_function->argument_types[i].to_string() + ").", p_function->line); } } @@ -8039,6 +8064,7 @@ void GDScriptParser::_check_block_types(BlockNode *p_block) { last_var_assign = lv->assign; if (lv->assign) { + lv->assign_op->arguments[0]->set_datatype(lv->datatype); DataType assign_type = _reduce_node_type(lv->assign); #ifdef DEBUG_ENABLED if (assign_type.has_type && assign_type.kind == DataType::BUILTIN && assign_type.builtin_type == Variant::NIL) { @@ -8183,9 +8209,14 @@ void GDScriptParser::_check_block_types(BlockNode *p_block) { if (lh_type.has_type && rh_type.may_yield && op->arguments[1]->type == Node::TYPE_OPERATOR) { _add_warning(GDScriptWarning::FUNCTION_MAY_YIELD, op->line, _find_function_name(static_cast<OperatorNode *>(op->arguments[1]))); } -#endif // DEBUG_ENABLED + bool type_match = check_types; +#endif // DEBUG_ENABLED if (check_types && !_is_type_compatible(lh_type, rh_type)) { +#ifdef DEBUG_ENABLED + type_match = false; +#endif // DEBUG_ENABLED + // Try supertype test if (_is_type_compatible(rh_type, lh_type)) { _mark_line_as_unsafe(op->line); @@ -8197,23 +8228,29 @@ void GDScriptParser::_check_block_types(BlockNode *p_block) { op->line); return; } - // Replace assignment with implicit conversion - BuiltInFunctionNode *convert = alloc_node<BuiltInFunctionNode>(); - convert->line = op->line; - convert->function = GDScriptFunctions::TYPE_CONVERT; - - ConstantNode *tgt_type = alloc_node<ConstantNode>(); - tgt_type->line = op->line; - tgt_type->value = (int)lh_type.builtin_type; - - OperatorNode *convert_call = alloc_node<OperatorNode>(); - convert_call->line = op->line; - convert_call->op = OperatorNode::OP_CALL; - convert_call->arguments.push_back(convert); - convert_call->arguments.push_back(op->arguments[1]); - convert_call->arguments.push_back(tgt_type); - - op->arguments.write[1] = convert_call; + if (op->op == OperatorNode::OP_ASSIGN) { + // Replace assignment with implicit conversion + BuiltInFunctionNode *convert = alloc_node<BuiltInFunctionNode>(); + convert->line = op->line; + convert->function = GDScriptFunctions::TYPE_CONVERT; + + ConstantNode *tgt_type = alloc_node<ConstantNode>(); + tgt_type->line = op->line; + tgt_type->value = (int)lh_type.builtin_type; + + OperatorNode *convert_call = alloc_node<OperatorNode>(); + convert_call->line = op->line; + convert_call->op = OperatorNode::OP_CALL; + convert_call->arguments.push_back(convert); + convert_call->arguments.push_back(op->arguments[1]); + convert_call->arguments.push_back(tgt_type); + + op->arguments.write[1] = convert_call; + +#ifdef DEBUG_ENABLED + type_match = true; // Since we are converting, the type is matching +#endif // DEBUG_ENABLED + } #ifdef DEBUG_ENABLED if (lh_type.builtin_type == Variant::INT && rh_type.builtin_type == Variant::REAL) { _add_warning(GDScriptWarning::NARROWING_CONVERSION, op->line); @@ -8225,6 +8262,9 @@ void GDScriptParser::_check_block_types(BlockNode *p_block) { if (!rh_type.has_type && (op->op != OperatorNode::OP_ASSIGN || lh_type.has_type || op->arguments[0]->type == Node::TYPE_OPERATOR)) { _mark_line_as_unsafe(op->line); } + op->datatype.has_type = type_match; +#else + op->datatype.has_type = false; #endif // DEBUG_ENABLED } break; case OperatorNode::OP_CALL: @@ -8251,7 +8291,11 @@ void GDScriptParser::_check_block_types(BlockNode *p_block) { _mark_line_as_safe(op->line); _reduce_node_type(op); // Test for safety anyway #ifdef DEBUG_ENABLED - _add_warning(GDScriptWarning::STANDALONE_EXPRESSION, statement->line); + if (op->op == OperatorNode::OP_TERNARY_IF) { + _add_warning(GDScriptWarning::STANDALONE_TERNARY, statement->line); + } else { + _add_warning(GDScriptWarning::STANDALONE_EXPRESSION, statement->line); + } #endif // DEBUG_ENABLED } } @@ -8468,11 +8512,8 @@ Error GDScriptParser::_parse(const String &p_base_path) { current_class = main_class; current_function = NULL; current_block = NULL; -#ifdef DEBUG_ENABLED + if (for_completion) check_types = false; -#else - check_types = false; -#endif // Resolve all class-level stuff before getting into function blocks _check_class_level_types(main_class); |