@Test
public void analyzingTwoArgumentsLambda() throws Exception {
class C {
void m() {
λ(s, n, null);
}
}
LambdaAnalyzer lambda = lambdaIn(C.class);
assertTrue(lambda.locals.isEmpty());
assertTrue(lambda.getMutableLocals().isEmpty());
assertEquals(list("s", "n"), list(lambda.parameters.keySet()));
assertEquals(list(getType(String.class), INT_TYPE), lambda.getParameterTypes());
assertEquals(list(object, object), lambda.newLambdaParameterTypes);
assertEquals(object, lambda.expressionType);
assertEquals(getType(Fn2.class), lambda.lambdaType);
assertEquals("call", lambda.sam.getName());
assertEquals(list(object, object), list(lambda.sam.getArgumentTypes()));
assertEquals(object, lambda.sam.getReturnType());
assertFalse(lambda.parameterNeedsUnboxing("s"));
assertTrue(lambda.parameterNeedsUnboxing("n"));
}
@Test
public void analyzingLambdaClosingOverEffectivelyFinalArgument() throws Exception {
class C {
void m(int i) {
λ(i);
}
}
LambdaAnalyzer lambda = lambdaIn(C.class);
assertEquals(1, lambda.locals.size());
assertTrue(lambda.getMutableLocals().isEmpty());
assertEquals(list("i"), list(lambda.locals.keySet()));
assertEquals(INT_TYPE, lambda.getLocalVariableType("i"));
}
@Test
public void analyzingLambdaCreatedFromPrimitiveLambdaThatHasDefaultValue() throws Exception {
class C {
void m() {
LambdaPrimitives.λ(d = 2, 0);
}
}
LambdaAnalyzer lambda = lambdaIn(C.class);
assertEquals(getType(Fn1DtoI.class), lambda.lambdaType);
assertEquals(list(DOUBLE_TYPE), list(lambda.sam.getArgumentTypes()));
assertEquals(list(DOUBLE_TYPE), lambda.getParameterTypes());
assertTrue(lambda.parametersWithDefaultValue.contains("d"));
assertTrue(lambda.parameterDefaultValueNeedsBoxing("d"));
}
@Test
public void analyzingLambdaClosingOverVariableInitialziedInLambda() throws Exception {
class C {
void m() {
int i;
λ(i = 2);
}
}
LambdaAnalyzer lambda = lambdaIn(C.class);
assertEquals(1, lambda.locals.size());
assertEquals(1, lambda.getMutableLocals().size());
assertEquals(list("i"), list(lambda.getMutableLocals().keySet()));
assertEquals(INT_TYPE, lambda.getLocalVariableType("i"));
}
@Test
public void analyzingLambdaClosingOverIncreasedVariableOutsideLambda() throws Exception {
class C {
void m() {
int i = 1;
λ(i++);
}
}
LambdaAnalyzer lambda = lambdaIn(C.class);
assertEquals(1, lambda.locals.size());
assertEquals(1, lambda.getMutableLocals().size());
assertEquals(list("i"), list(lambda.getMutableLocals().keySet()));
assertEquals(INT_TYPE, lambda.getLocalVariableType("i"));
}
@Test
public void analyzingLambdaClosingOverMutableVariableMutatedOutsideLambda() throws Exception {
class C {
void m() {
int i = 1;
i = 2;
λ(i);
}
}
LambdaAnalyzer lambda = lambdaIn(C.class);
assertEquals(1, lambda.locals.size());
assertEquals(1, lambda.getMutableLocals().size());
assertEquals(list("i"), list(lambda.getMutableLocals().keySet()));
}
@Test
public void analyzingLambdaCreatedFromPrimitiveLambdaThatNeedsNarrowConversionFromLongToInt()
throws Exception {
class C {
void m() {
LambdaPrimitives.λ(l, idx, 0);
}
}
LambdaAnalyzer lambda = lambdaIn(C.class);
assertEquals(getType(Fn2LLtoL.class), lambda.lambdaType);
assertEquals(list(LONG_TYPE, LONG_TYPE), list(lambda.sam.getArgumentTypes()));
assertEquals(list(LONG_TYPE, INT_TYPE), lambda.getParameterTypes());
assertFalse(lambda.parameterNeedsUnboxing("l"));
assertFalse(lambda.parameterNeedsBoxing("l"));
assertFalse(lambda.parameterNeedsNarrowConversionFromActualArgument("l"));
assertEquals(-1, lambda.parameterNarrowConversionOpcode("l"));
assertFalse(lambda.parameterNeedsUnboxing("idx"));
assertFalse(lambda.parameterNeedsBoxing("idx"));
assertTrue(lambda.parameterNeedsNarrowConversionFromActualArgument("idx"));
assertEquals(L2I, lambda.parameterNarrowConversionOpcode("idx"));
assertEquals(LONG_TYPE, lambda.expressionType);
assertEquals(LONG_TYPE, lambda.sam.getReturnType());
}
@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 analyzingLambdaClosingOverMutableArgument() throws Exception {
class C {
void m(int i) {
i = 2;
i = 4;
λ(i);
}
}
LambdaAnalyzer lambda = lambdaIn(C.class);
assertEquals(1, lambda.locals.size());
assertEquals(1, lambda.getMutableLocals().size());
assertEquals(list("i"), list(lambda.getMutableLocals().keySet()));
assertEquals(INT_TYPE, lambda.getLocalVariableType("i"));
}
@Test
public void analyzingTwoArgumentLambdaWithDefaultValue() throws Exception {
class C {
void m() {
λ(n, s = "", null);
}
}
LambdaAnalyzer lambda = lambdaIn(C.class);
assertEquals(list("n", "s"), list(lambda.parameters.keySet()));
assertEquals(list(INT_TYPE, getType(String.class)), lambda.getParameterTypes());
assertFalse(lambda.parametersWithDefaultValue.contains("n"));
assertTrue(lambda.parametersWithDefaultValue.contains("s"));
assertTrue(lambda.parameterDefaultValueNeedsBoxing("n"));
assertFalse(lambda.parameterDefaultValueNeedsBoxing("s"));
}
@Test
public void analyzingOneArgumentLambdaWithDefaultValue() throws Exception {
class C {
void m() {
λ(n = 2, null);
}
}
LambdaAnalyzer lambda = lambdaIn(C.class);
assertTrue(lambda.locals.isEmpty());
assertTrue(lambda.getMutableLocals().isEmpty());
assertEquals(list("n"), list(lambda.parameters.keySet()));
assertEquals(list(INT_TYPE), lambda.getParameterTypes());
assertTrue(lambda.parametersWithDefaultValue.contains("n"));
assertTrue(lambda.parameterDefaultValueNeedsBoxing("n"));
}
@Test
public void analyzingLambdaCreatedFromPrimitiveLambdaThatNeedsNarrowConversionFromDoubleToFloat()
throws Exception {
class C {
void m() {
LambdaPrimitives.λ(d, fl, 0);
}
}
LambdaAnalyzer lambda = lambdaIn(C.class);
assertEquals(getType(Fn2DDtoD.class), lambda.lambdaType);
assertEquals(list(DOUBLE_TYPE, DOUBLE_TYPE), list(lambda.sam.getArgumentTypes()));
assertEquals(list(DOUBLE_TYPE, FLOAT_TYPE), lambda.getParameterTypes());
assertFalse(lambda.parameterNeedsUnboxing("fl"));
assertFalse(lambda.parameterNeedsBoxing("fl"));
assertTrue(lambda.parameterNeedsNarrowConversionFromActualArgument("fl"));
assertEquals(D2F, lambda.parameterNarrowConversionOpcode("fl"));
}
@Test
public void analyzingLambdaCreatedFromGenericCast() throws Exception {
class C {
void m() {
Runnable r = delegate(null);
}
}
LambdaAnalyzer lambda = lambdaIn(C.class);
assertTrue(lambda.parameters.isEmpty());
assertTrue(lambda.newLambdaParameterTypes.isEmpty());
assertEquals(object, lambda.expressionType);
assertEquals(getType(Runnable.class), lambda.lambdaType);
assertEquals("run", lambda.sam.getName());
assertEquals(0, lambda.sam.getArgumentTypes().length);
assertEquals(VOID_TYPE, lambda.sam.getReturnType());
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());
}