本文整理匯總了Java中java.lang.invoke.MethodHandles.Lookup.unreflectSpecial方法的典型用法代碼示例。如果您正苦於以下問題：Java Lookup.unreflectSpecial方法的具體用法？Java Lookup.unreflectSpecial怎麽用？Java Lookup.unreflectSpecial使用的例子？那麽, 這裏精選的方法代碼示例或許可以為您提供幫助。您也可以進一步了解該方法所在類java.lang.invoke.MethodHandles.Lookup的用法示例。
在下文中一共展示了Lookup.unreflectSpecial方法的1個代碼示例，這些例子默認根據受歡迎程度排序。您可以為喜歡或者感覺有用的代碼點讚，您的評價將有助於係統推薦出更棒的Java代碼示例。
示例1: testUnreflectMaybeSpecial
import java.lang.invoke.MethodHandles.Lookup; //導入方法依賴的package包/類
void testUnreflectMaybeSpecial(Class<?> specialCaller,
boolean positive, Lookup lookup,
Class<?> defc, Class<?> rcvc, Class<?> ret, String name, Class<?>... params) throws Throwable {
countTest(positive);
String methodName = name.substring(1 + name.indexOf('/')); // foo/bar => foo
MethodType type = MethodType.methodType(ret, params);
Lookup specialLookup = (specialCaller != null ? maybeMoveIn(lookup, specialCaller) : null);
boolean specialAccessOK = (specialCaller != null &&
specialLookup.lookupClass() == specialCaller &&
(specialLookup.lookupModes() & Lookup.PRIVATE) != 0);
Method rmethod = defc.getDeclaredMethod(methodName, params);
MethodHandle target = null;
Exception noAccess = null;
boolean isStatic = (rcvc == null);
boolean isSpecial = (specialCaller != null);
try {
if (verbosity >= 4) System.out.println("lookup via "+lookup+" of "+defc+" "+name+type);
if (isSpecial)
target = specialLookup.unreflectSpecial(rmethod, specialCaller);
else
target = maybeMoveIn(lookup, defc).unreflect(rmethod);
} catch (ReflectiveOperationException ex) {
noAccess = ex;
assertExceptionClass(
IllegalAccessException.class, // NSME is impossible, since it was already reflected
noAccess);
if (verbosity >= 5) ex.printStackTrace(System.out);
}
if (verbosity >= 3)
System.out.println("unreflect"+(isSpecial?"Special":"")+" "+defc.getName()+"."+name+"/"+type
+(!isSpecial ? "" : " specialCaller="+specialCaller)
+( isStatic ? "" : " receiver="+rcvc)
+" => "+target
+(noAccess == null ? "" : " !! "+noAccess));
if (positive && noAccess != null) throw noAccess;
assertEquals(positive ? "positive test" : "negative test erroneously passed", positive, target != null);
if (!positive) return; // negative test failed as expected
assertEquals(isStatic, Modifier.isStatic(rmethod.getModifiers()));
Class<?>[] paramsMaybeWithSelf = params;
if (!isStatic) {
paramsMaybeWithSelf = cat(array(Class[].class, (Class)rcvc), params);
}
MethodType typeMaybeWithSelf = MethodType.methodType(ret, paramsMaybeWithSelf);
if (isStatic) {
assertEquals(typeMaybeWithSelf, target.type());
} else {
if (isSpecial)
assertEquals(specialCaller, target.type().parameterType(0));
else
assertEquals(defc, target.type().parameterType(0));
assertEquals(typeMaybeWithSelf, target.type().changeParameterType(0, rcvc));
}
Object[] argsMaybeWithSelf = randomArgs(paramsMaybeWithSelf);
printCalled(target, name, argsMaybeWithSelf);
target.invokeWithArguments(argsMaybeWithSelf);
assertCalled(name, argsMaybeWithSelf);
if (verbosity >= 1)
System.out.print(':');
}