RecipeAcceptor.java 文件源码

public static <T> T accept(Recipe recipe, RecipeVisitor<T> visitor) {
    if (recipe instanceof ShapedRecipe) {
        ShapedRecipe shapedRecipe = (ShapedRecipe) recipe;
        return visitor.visit(shapedRecipe);
    } else if (recipe instanceof ShapelessRecipe) {
        ShapelessRecipe shapelessRecipe = (ShapelessRecipe) recipe;
        return visitor.visit(shapelessRecipe);
    } else if (recipe instanceof FurnaceRecipe) {
        FurnaceRecipe furnaceRecipe = (FurnaceRecipe) recipe;
        return visitor.visit(furnaceRecipe);
    }
    return visitor.visitOther(recipe);
}