Method reduce_subscript

modules/gdscript/gdscript_analyzer.cpp:4767–5127

}

void GDScriptAnalyzer::reduce_subscript(GDScriptParser::SubscriptNode *p_subscript, bool p_can_be_pseudo_type) {
	if (p_subscript->base == nullptr) {
		return;
	}
	if (p_subscript->base->type == GDScriptParser::Node::IDENTIFIER) {
		reduce_identifier(static_cast<GDScriptParser::IdentifierNode *>(p_subscript->base), true);
	} else if (p_subscript->base->type == GDScriptParser::Node::SUBSCRIPT) {
		reduce_subscript(static_cast<GDScriptParser::SubscriptNode *>(p_subscript->base), true);
	} else {
		reduce_expression(p_subscript->base);
	}

	GDScriptParser::DataType result_type;

	if (p_subscript->is_attribute) {
		if (p_subscript->attribute == nullptr) {
			return;
		}

		GDScriptParser::DataType base_type = p_subscript->base->get_datatype();
		bool valid = false;

		// If the base is a metatype, use the analyzer instead.
		if (p_subscript->base->is_constant && !base_type.is_meta_type) {
			// GH-92534. If the base is a GDScript, use the analyzer instead.
			bool base_is_gdscript = false;
			if (p_subscript->base->reduced_value.get_type() == Variant::OBJECT) {
				Ref<GDScript> gdscript = Object::cast_to<GDScript>(p_subscript->base->reduced_value.get_validated_object());
				if (gdscript.is_valid()) {
					base_is_gdscript = true;
					// Makes a metatype from a constant GDScript, since `base_type` is not a metatype.
					GDScriptParser::DataType base_type_meta = type_from_variant(gdscript, p_subscript);
					// First try to reduce the attribute from the metatype.
					reduce_identifier_from_base(p_subscript->attribute, &base_type_meta);
					GDScriptParser::DataType attr_type = p_subscript->attribute->get_datatype();
					if (attr_type.is_set()) {
						valid = !attr_type.is_pseudo_type || p_can_be_pseudo_type;
						result_type = attr_type;
						p_subscript->is_constant = p_subscript->attribute->is_constant;
						p_subscript->reduced_value = p_subscript->attribute->reduced_value;
					}
					if (!valid) {
						// If unsuccessful, reset and return to the normal route.
						p_subscript->attribute->set_datatype(GDScriptParser::DataType());
					}
				}
			}
			if (!base_is_gdscript) {
				// Just try to get it.
				Variant value = p_subscript->base->reduced_value.get_named(p_subscript->attribute->name, valid);
				if (valid) {
					p_subscript->is_constant = true;
					p_subscript->reduced_value = value;
					result_type = type_from_variant(value, p_subscript);
				}
			}
		}