将匿名内部类重写为闭包（Java - ＆gt; xtend）

Question

如何将测试方法重写为xtend？我尝试了几件事，但我失败了。

用xtend编写的类

import com.google.common.base.Function

class Generator {
@Property Function<Generator, CharSequence> generateSomething;

generateFoo() {
    if( null != generateSomething) {
        generateSomething.apply(this)
    }
}

用Java编写的TestClass

@Test
public void testX() {

    Generator gen = createGenerator()

    Function<Generator, CharSequence> generateSomething= new Function<Generator, CharSequence>() {
        @Override
        public CharSequence apply( Generator input ) {
            StringConcatenation result = new StringConcatenation();
            result.append(".......");

            return result;
        }
    };

    gen.setGenerateSomething( generateSomething );

}

Answer 1

好的，我解决了这个问题：

import com.google.common.base.Function

class Generator {
@Property private (Generator) => CharSequence generateSomething;

generateFoo() {
    if( null != generateSomething) {
        generateSomething.apply(this)
    }
}

xtend中的重写测试方法：

@Test
def void testX() {

    Generator gen = createGenerator()

    gen.setGenerateSomething['''......''']
}