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8242451: ensure semantics of non-capturing lambdas are preserved independent of execution mode

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Reviewed-by: mchung
This commit is contained in:
Gilles Duboscq 2020-09-25 10:10:36 +00:00
parent dc1ef58351
commit 1b79326c05
4 changed files with 165 additions and 57 deletions
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42
test/langtools/tools/javac/lambda/methodReference/BridgeMethod.java
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@ -26,15 +26,11 @@
* @bug 8003280
* @summary Add lambda tests
* Test bridge methods in certain SAM conversion
* Tests that jdk.internal.lambda.disableEagerInitialization=true creates a
* get$Lambda method for non-capturing lambdas
* @compile BridgeMethod.java
* @run main BridgeMethod
* @run main/othervm -Djdk.internal.lambda.disableEagerInitialization=true BridgeMethod
*/
import java.lang.reflect.Method;
import java.util.Arrays;
import java.util.HashSet;
import java.util.Set;
@ -72,35 +68,19 @@ public class BridgeMethod {
return s;
}
private static Set<String> allowedMethods() {
Set<String> s = new HashSet<>();
s.add("m");
return s;
}
private static boolean matchingMethodNames(Method[] methods) {
Set<String> methodNames = new HashSet<>();
for (Method m : methods) {
methodNames.add(m.getName());
}
return methodNames.equals(allowedMethods());
}
public static void main(String[] args) {
L la = BridgeMethod::bar; //static reference
la.m("hi");
Class<? extends L> c1 = la.getClass();
Method[] methods = c1.getDeclaredMethods();
assertTrue(matchingMethodNames(methods));
Set<String> types = setOfStringObject();
System.out.println("methods in SAM conversion of L:");
for(Method m : methods) {
if (m.getName().equals("m")) {
System.out.println(m.toGenericString());
Class[] parameterTypes = m.getParameterTypes();
assertTrue(parameterTypes.length == 1);
assertTrue(types.remove(parameterTypes[0].getName()));
}
assertTrue(m.getName().equals("m"));
System.out.println(m.toGenericString());
Class[] parameterTypes = m.getParameterTypes();
assertTrue(parameterTypes.length == 1);
assertTrue(types.remove(parameterTypes[0].getName()));
}
assertTrue(types.isEmpty() || (types.size() == 1 && types.contains("java.lang.String")));
@ -108,16 +88,14 @@ public class BridgeMethod {
//km.m("hi"); //will be uncommented when CR7028808 fixed
Class<? extends KM> c2 = km.getClass();
methods = c2.getDeclaredMethods();
assertTrue(matchingMethodNames(methods));
types = setOfStringObject();
System.out.println("methods in SAM conversion of KM:");
for(Method m : methods) {
if (m.getName().equals("m")) {
System.out.println(m.toGenericString());
Class<?>[] parameterTypes = m.getParameterTypes();
assertTrue(parameterTypes.length == 1);
assertTrue(types.remove(parameterTypes[0].getName()));
}
assertTrue(m.getName().equals("m"));
System.out.println(m.toGenericString());
Class<?>[] parameterTypes = m.getParameterTypes();
assertTrue(parameterTypes.length == 1);
assertTrue(types.remove(parameterTypes[0].getName()));
}
assertTrue(types.isEmpty());