@Test
public void analyzingLambdaCreatedFromGenericCastWithTypesThatNeedConversion() throws Exception {
class C {
void m() {
I i = delegate(n, o1, dbl, 0);
}
}
LambdaAnalyzer lambda = lambdaIn(C.class);
assertEquals(getType(I.class), lambda.lambdaType);
assertEquals("invoke", lambda.sam.getName());
assertEquals(list("n", "o1", "dbl"), list(lambda.parameters.keySet()));
assertEquals(list(INT_TYPE, object, DOUBLE_TYPE), list(lambda.sam.getArgumentTypes()));
assertEquals(list(INT_TYPE, object, getType(Double.class)), lambda.getParameterTypes());
assertFalse(lambda.parameterNeedsUnboxing("n"));
assertFalse(lambda.parameterNeedsBoxing("n"));
assertFalse(lambda.parameterNeedsUnboxing("o1"));
assertFalse(lambda.parameterNeedsBoxing("o1"));
assertFalse(lambda.parameterNeedsUnboxing("dbl"));
assertTrue(lambda.parameterNeedsBoxing("dbl"));
assertEquals(object, lambda.expressionType);
assertEquals(LONG_TYPE, lambda.sam.getReturnType());
assertTrue(lambda.returnNeedsUnboxing());
assertFalse(lambda.returnNeedsBoxing());
}
@Test
public void analyzingZeroArgumentLambda() throws Exception {
class C {
void m() {
λ();
}
}
LambdaTreeWeaver weaver = analyze(C.class);
assertEquals(getType(C.class).getInternalName(), weaver.c.name);
assertEquals(2, weaver.methods.size());
MethodAnalyzer constructor = weaver.methods.get(0);
assertEquals("<init>", constructor.m.name);
assertTrue(constructor.lambdas.isEmpty());
MethodAnalyzer method = weaver.methods.get(1);
assertEquals("m", method.m.name);
assertEquals(1, method.lambdas.size());
LambdaAnalyzer lambda = method.lambdas.get(0);
assertTrue(lambda.locals.isEmpty());
assertTrue(lambda.getMutableLocals().isEmpty());
assertTrue(lambda.parameters.isEmpty());
assertTrue(lambda.newLambdaParameterTypes.isEmpty());
assertEquals(object, lambda.expressionType);
assertEquals(getType(Fn0.class), lambda.lambdaType);
assertEquals("call", lambda.sam.getName());
assertEquals(0, lambda.sam.getArgumentTypes().length);
assertEquals(object, lambda.sam.getReturnType());
assertFalse(lambda.returnNeedsUnboxing());
assertFalse(lambda.returnNeedsBoxing());
}
@Test
public void analyzingLambdaCreatedFromGenericCastWhichAlsoDefinesMethodFromObject()
throws Exception {
class C {
void m() {
Comparator<?> c = delegate(o1, o2, 0);
}
}
LambdaAnalyzer lambda = lambdaIn(C.class);
assertEquals(list("o1", "o2"), list(lambda.parameters.keySet()));
assertEquals(list(object, object), lambda.newLambdaParameterTypes);
assertEquals(object, lambda.expressionType);
assertEquals(getType(Comparator.class), lambda.lambdaType);
assertEquals("compare", lambda.sam.getName());
assertEquals(list(object, object), list(lambda.sam.getArgumentTypes()));
assertEquals(INT_TYPE, lambda.sam.getReturnType());
assertTrue(lambda.returnNeedsUnboxing());
assertFalse(lambda.returnNeedsBoxing());
}