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LambdaTest Funktioniert.

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This commit is contained in:
Fayez Abu Alia 2018-07-18 22:49:21 +02:00
parent 448d3e04f8
commit 14be882b7b
2 changed files with 8 additions and 4 deletions
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2
src/de/dhbwstuttgart/bytecode/BytecodeGenMethod.java
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@ -581,7 +581,7 @@ public class BytecodeGenMethod implements StatementVisitor {
// ")"+lam.getReturn.getBounds // ")"+lam.getReturn.getBounds
Signature sig = new Signature(lambdaExpression, numberOfParams); Signature sig = new Signature(lambdaExpression, numberOfParams);
String name = "Fun" + numberOfParams + "$$"; String name = "Fun" + numberOfParams + "$$";
classWriter.visit(Opcodes.V1_8, Opcodes.ACC_INTERFACE + Opcodes.ACC_ABSTRACT, name, sig.toString(), classWriter.visit(Opcodes.V1_8, Opcodes.ACC_PUBLIC+Opcodes.ACC_INTERFACE + Opcodes.ACC_ABSTRACT, name, sig.toString(),
Type.getInternalName(Object.class), null); Type.getInternalName(Object.class), null);
MethodVisitor mvApply = classWriter.visitMethod(Opcodes.ACC_PUBLIC + Opcodes.ACC_ABSTRACT, "apply", methDesc, MethodVisitor mvApply = classWriter.visitMethod(Opcodes.ACC_PUBLIC + Opcodes.ACC_ABSTRACT, "apply", methDesc,
methSig.toString(), null); methSig.toString(), null);

10
test/bytecode/LambdaTest.java
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@ -31,12 +31,16 @@ public class LambdaTest {
loader = new URLClassLoader(new URL[] {new URL("file://"+pathToClassFile)}); loader = new URLClassLoader(new URL[] {new URL("file://"+pathToClassFile)});
classToTest = loader.loadClass("Lambda"); classToTest = loader.loadClass("Lambda");
instanceOfClass = classToTest.getDeclaredConstructor().newInstance(); instanceOfClass = classToTest.getDeclaredConstructor().newInstance();
Method m = classToTest.getDeclaredMethod("m"); Method m = classToTest.getDeclaredMethod("m");
Class<?> lambda = m.invoke(instanceOfClass).getClass(); Class<?> lambda = m.invoke(instanceOfClass).getClass();
Method apply = lambda.getMethod("apply", Object.class); Method apply = lambda.getMethod("apply", Object.class);
Integer result = (Integer) apply.invoke(lambda, new Integer(77)); //laeuft nicht, vermutlich weil Lambda-Ausdrucks Methode "apply" private ist. apply.setAccessible(true);
assertEquals(77, result);
Integer i = 77;
// result = 77*77 = 5929
Integer result = (Integer) apply.invoke(m.invoke(instanceOfClass), i); //laeuft nicht, vermutlich weil Lambda-Ausdrucks Methode "apply" private ist.
assertEquals(5929, result);
} }