new file: ../YTest.java

new file:   Y.jav
This commit is contained in:
Martin Plümicke 2018-11-04 12:06:09 +01:00
parent 26477b60fb
commit 5ddc9201f7
2 changed files with 80 additions and 0 deletions

52
test/bytecode/YTest.java Normal file
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package bytecode;
import static org.junit.Assert.assertEquals;
import java.io.File;
import java.lang.reflect.InvocationTargetException;
import java.lang.reflect.Method;
import java.net.URL;
import java.net.URLClassLoader;
import org.junit.Test;
import de.dhbwstuttgart.core.JavaTXCompiler;
public class YTest {
private static String path;
private static File fileToTest;
private static JavaTXCompiler compiler;
private static ClassLoader loader;
private static Class<?> classToTest;
private static String pathToClassFile;
private static Object instanceOfClass;
@Test
public void generateBC() throws Exception {
path = System.getProperty("user.dir")+"/test/bytecode/javFiles/Y.jav";
fileToTest = new File(path);
compiler = new JavaTXCompiler(fileToTest);
compiler.generateBytecode(System.getProperty("user.dir")+"/testBytecode/generatedBC/");
pathToClassFile = System.getProperty("user.dir")+"/testBytecode/generatedBC/";
loader = new URLClassLoader(new URL[] {new URL("file://"+pathToClassFile)});
classToTest = loader.loadClass("Y");
/*
instanceOfClass = classToTest.getDeclaredConstructor().newInstance();
Method m = classToTest.getDeclaredMethod("m");
Class<?> lambda = m.invoke(instanceOfClass).getClass();
Method apply = lambda.getMethod("apply", Object.class);
// Damit man auf die Methode zugreifen kann
apply.setAccessible(true);
Integer i = 77;
Integer result = (Integer) apply.invoke(m.invoke(instanceOfClass), i);
assertEquals(77, result);
*/
}
}

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import java.lang.Integer;
class Y {
y;
//factorial;
Y() {
y = f -> t -> f.apply(y.apply(f)).apply(t);
//factorial = y.apply(f -> n -> { if (n == 0) return 1; else return n * f.apply(n - 1); });
}
}
/*
ergibt Parse-Error
class fac1 {
factorial;
fac1() {
var y;
y = new Y<>().y;
factorial = y.apply(f -> n -> { if (n == 0) return 1; else return n * f.apply(n - 1); });
}
public static void main(String args[]) {
System.out.println(new fac1().factorial.apply(3));
}
}
*/