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    • smallcheck.generators.StaticFactoryMethodsGenerator Maven / Gradle / Ivy

    The newest version!
    package smallcheck.generators;

import java.lang.reflect.InvocationTargetException;
import java.lang.reflect.Method;
import java.util.ArrayList;
import java.util.Comparator;
import java.util.List;
import java.util.function.Function;
import java.util.stream.Stream;

/**
 *
 */
public class StaticFactoryMethodsGenerator extends SeriesGen {
    private final GenFactory genFactory;
    private final List staticFactoryMethods;
    private final Function copyFunc;

    public StaticFactoryMethodsGenerator(GenFactory genFactory, List staticFactoryMethods, Function copyFunc) {
        super();
        this.genFactory = genFactory;
        this.staticFactoryMethods = new ArrayList<>(staticFactoryMethods);
        this.copyFunc = copyFunc;
        this.staticFactoryMethods.sort(
                Comparator
                        .comparing((Method m) -> m.getParameters().length));
    }

    @SuppressWarnings("unchecked")
    @Override
    public Stream generate(int depth) {
        if (depth <= 0) {
            return Stream.empty();
        }
        return staticFactoryMethods.stream().flatMap(m -> {
            return ParamGen.generate(genFactory, m.getParameters(), depth - 1).map(args -> {
                try {
                    return m.invoke(null, args);
                } catch (IllegalAccessException | InvocationTargetException e) {
                    throw new RuntimeException(e);
                }
            });
        });
    }

    @Override
    public Object copy(Object obj) {
        return copyFunc.apply(obj);
    }
}
    
    
    
    

    




    
    
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