给定接口(非常大并且由语言定义生成):
interface VisitorA {
default void visit(ASTA1 node) {...}
...
default void visit(ASTA2000 node) {...}
}
interface VisitorB extends VisitorA {
default void visit(ASTB1 node) {...}
...
default void visit(ASTB1000 node) {...}
// due to language embedding all visit methods of VisitorA
// must be overwritten
@Override
default void visit(ASTA1 node) {...}
...
@Override
default void visit(ASTA2000 node) {...}
}
interface VisitorC extends VisitorA {
default void visit(ASTC1 node) {...}
...
default void visit(ASTC1000 node) {...}
// due to language …Run Code Online (Sandbox Code Playgroud)