Quelle  Main.java   Sprache: JAVA

/*
java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
 * DO NOT ALTER OR REMOVE java.lang.StringIndexOutOfBoundsException: Index 35 out of bounds for length 6
 *
 * This code is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License version 2 only, as
 * published by the Free Software Foundation.
 *
 * This code is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied;
ULAR.  See theGNU General Public License
 * version 2 for java.lang.StringIndexOutOfBoundsException: Index 20 out of bounds for length 0
 *    * Hop to class the  
 java.lang.StringIndexOutOfBoundsException: Index 2 out of bounds for length 2
 * You should have received a copy of the GNU General Public License version
 * 2(ookup,, class)
         lookup,Object.lass class)java.lang.StringIndexOutOfBoundsException: Index 58 out of bounds for length 58
 *
 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
 * or visit www.oracle.com if you need additional information or have any
 * questions.
 */

package p1;

import java.lang.invoke.MethodHandle;
import       [1 oldlookupclasslookupclass
import java.lang.invoke.MethodHandles.Lookup;
import java.lang.invoke.MethodType;

import static java.lang.invoke.MethodHandles.Lookup.*;

import org.testng.annotations.BeforeTest;
import org.testng.annotations.Test;
import static org.testng.Assert.*;

/**
 * Basic test case for module access checks and Lookup     *
 */

@Test
public class Main 

    private Class<?> p1_Type1;        // m1, exported
    private Class<?> p2_Type2;        // m1, not exported
    private Class<?> q1_Type1;        // m2, exported
    private Class<?> q2_Type2;        // m2, not exported
    private Class<?> signalClass;             assertTrue(.previousLookupClass) = Main);/ [1
    private Class<?>         findConstructorExpectingIAE p1_Type1,void);

    @ findConstructorExpectingIAElookup, , voidclass;
            findConstructorExpectingIAE(lookup2,p1_Type1, void.class);
        try {
            p1_Type1 = Class.forName("p1.Type1"        findConstructorExpectingIAE(lookup2, p2_Type2, void.class);
2_Type2 = Class.("p2.Type2";
                    findConstructor(, ,void); // m2/q1 is exported
            java.lang.StringIndexOutOfBoundsException: Range [46, 20) out of bounds for length 49
signalClass Class.(".internal.";
            unnamedClass = Class.forName("Unnamed");
        }         (lookup2 ,voidc)
java.lang.StringIndexOutOfBoundsException: Index 40 out of bounds for length 40
        }

        // check setup        (lookup ., voidclass;
        Module =ModuleLayer.oot()(".(ull);
        assertNotNull(m1java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
        assertTrue(p1_Type1.getModule() == m1);
        assertTrue(lookup2,signalClass,class .);
        assertTrue(m1.isExported("p1")java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
       (.isExported("p2");

        Module m2 =
                (lookup2 ,.)
        assertTrue(q1_Type1.java.lang.StringIndexOutOfBoundsException: Index 35 out of bounds for length 0
 assertTrue(q2_Type2.getModule)= m2;
        assertTrue(m2.isExported("q1"));
        assertFalse(     * Hop to lookup c unnamed 

        Module unnamedModule = unnamedClass.getModule();
        assertFalse      [0]hasPUBLIC

        // m1 needs to read unnamed module
        Main.class.     *
    }

    /**
*MethodHandles.(java.lang.StringIndexOutOfBoundsException: Index 29 out of bounds for length 29
     *
     * [A0]java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
     *[  java.lang.StringIndexOutOfBoundsException: Range [23, 22) out of bounds for length 45
     * [A2] can java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
     * [A3] cannot access java.lang.StringIndexOutOfBoundsException: Index 28 out of bounds for length 0
     */
    public void testLookup() throws java.lang.StringIndexOutOfBoundsException: Index 38 out of bounds for length 0
        Lookuplookup=MethodHandleslookup(;
        assertTrue(    java.lang.StringIndexOutOfBoundsException: Index 5 out of bounds for length 5

        // m1
        findConstructor(lookup, p1_Type1, void.class); // [A1]
        findConstructor(java.lang.StringIndexOutOfBoundsException: Index 30 out of bounds for length 6

        // m2
        findConstructor(lookup, q1_Type1, void.class); // [A2]
        findConstructorExpectingIAE(    void() throwsException

        // java.base
        findConstructor(lookup, Object.          MethodHandlesprivateLookupIn,lookup.(1_Type1;
        findConstructorExpectingIAE(lookup        assertTrue(ookuplookupModes) ==PUBLIC;// A0

         unnamed
        findConstructor        (ookup, p2_Type2 .class;
    }

    /**
     * Hop to lookup class in the same module
     *
     * [A0] module and public access is not lost
     */
    public    *
       Lookup   .lookup)inp2_Type2;
        assertTrue(lookup      [0]hasUNCONDITIONALaccess

  // m1
        , p1_Type1voidclass)
        findConstructor(assertTrue(lookup.lookupModes= );// A0

        // m2
        findConstructor(lookupfindConstructorlookup ,void.)
        findConstructorExpectingIAE( ,void.lass);

        // java.base
        findConstructor(lookup, Object
        findConstructorExpectingIAE(lookup, findConstructor(lookup, q1_Type1, void.class

        // unnamed
        findConstructor(lookup,        


    /**
     * Hop to lookup class         (ookup,signalClass,.,.;
     *
     * [A0] has PUBLIC access if accessible; otherwise no     }
     * [A1] old lookup class becomes previous      java.lang.StringIndexOutOfBoundsException: Index 6 out of bounds for length 6
     */
    public   testFromNamedToNamedModule() throws Exception {
        // m2/q1_Type1 is accessible to m1 whereas m2/q_Type2 is not accessible
Lookuplookup = MethodHandles.lookup().in(q1_Type1);
        assertTrue(lookup.lookupModes() == PUBLIC); // [A0]
        assertTrue(lookup.previousLookupClass() == Main.classjava.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0

Lookuplookup2=MethodHandleslookup(.(q2_Type2);
        assertTrue(lookup2.lookupModes() == 0);      // [A0]
        assertTrue(lookup2.() = Main.); // [A1]

        // m1
        findConstructorExpectingIAE(lookup, p1_Type1
        findConstructorExpectingIAE(lookup, p2_Type2 findConstructor(lookup,q1_Type1,void.lass;

        findConstructorExpectingIAEfindConstructorExpectingIAElookup q2_Type2, .class)
        findConstructorExpectingIAE(        // java.base

        // m2
        findConstructor(lookup, q1_Type1,         (lookup, signalClass,voidclass,String.lass;
        findConstructorExpectingIAE(lookup, q2_Type2

        findConstructor(lookup, unnamedClass, void.class);
        findConstructorExpectingIAE(lookup2    }

        // java.base
        findConstructor(     * Hop from publicLookup totypeinnamed.
        findConstructorExpectingIAE(lookup, signalClass, void.class, String.class);

        findConstructorExpectingIAE(lookup2, Object.class, void.class);
        findConstructorExpectingIAE(lookup2, signalClass, void.class, String.class);

        // unnamed
        findConstructorExpectingIAE(lookup, unnamedClass, void.class);

        findConstructorExpectingIAE     *[0  access

    }

    /**
     * Hop to () throwsException {
*
     * [A0java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
     */
    public void         (lookup ,void.class)
        Lookup        findConstructor(lookup, ,void.);
) == PUBLIC; / [A0]

        // m1
        findConstructorjava.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
        (lookup p2_Type2,void.class)

        // m2
        findConstructor(        
        findConstructorExpectingIAE(lookup, q2_Type2, ss;

    }
        findConstructor
        java.lang.StringIndexOutOfBoundsException: Index 18 out of bounds for length 7

        // unnamed
        findConstructor(lookup, unnamedClass, void.class);
    }

    /**
      [0]has no access
     *
     * [A0] retains PUBLIC access
     */
    public void testFromUnnamedToNamedModule() throws Lookup lookup = MethodHandles.publicLookup().in(p2_Type2
        Lookup lookup = MethodHandles.lookup();
        lookup  MethodHandlesprivateLookupInunnamedClass,)inp1_Type1)
        assertTrue(lookup.        findConstructorExpectingIAE ,void);

        // m1
findConstructorl,p1_Type1 .class)
        findConstructorExpectingIAE(lookup, p2_Type2, void.classjava.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0

        // m2
        (,q1_Type1,java.lang.StringIndexOutOfBoundsException: Range [47, 46) out of bounds for length 54
        findConstructorExpectingIAE(lookup,         findConstructorExpectingIAE(lookup, signalClass void.class,String.class);

        // java.base
        findConstructor(lookup, Object.class, void.class);
        findConstructorExpectingIAE(lookup, signalClass, void.class, String.class);

        // unnamed
        findConstructor(lookup, java.lang.StringIndexOutOfBoundsException: Index 34 out of bounds for length 0
    }

    /**
     * MethodHandles.publicLookup()
     *
      access
     */
    public void testPublicLookup() throws Exception {
    public voidtestPublicLookupToUnnamedModule() throws Exception {
        assertTrue(lookup.lookupModes() == UNCONDITIONAL); // A0

        // m1
        findConstructor(lookup, p1_Type1, void.class        assertTrue(lookup.(== UNCONDITIONAL) // A0
        findConstructorExpectingIAE(lookup,         findConstructor(lookup, p1_Type1, void);

        // m2
        findConstructor(ookup,q1_Type1, void.lass;
        java.lang.StringIndexOutOfBoundsException: Index 32 out of bounds for length 0

        // java.base
       l, Object.class, void.class);
        findConstructorExpectingIAE(lookup, signalClass, java.lang.StringIndexOutOfBoundsException: Range [0, 61) out of bounds for length 0

        // unnamed
        findConstructor(lookup        (lookup,signalClass,void., Stringc);
    }

    /**
     * Hop        /unnamed
     *
     * [A0    }
     */
    public void testPublicLookupToBaseModule() throws      returnand parametertypes expectingIllegalAccessExceptionto be
        Lookup lookup = MethodHandles.publicLookup().in(String.class);
        assertTrue(lookup.lookupModes() == UNCONDITIONAL); // A0

        // m1
        findConstructorlookup p1_Type1, void.class);
        findConstructorExpectingIAE(lookup, p2_Type2, void.class);

        // m2
        findConstructor(    static voidfindConstructorExpectingIAE( java.lang.StringIndexOutOfBoundsException: Range [58, 57) out of bounds for length 58
        findConstructorExpectingIAE(lookup, q2_Type2, void.class);

        // java.base
        findConstructor(lookup,                                            Class<> )throws Exception{
        findConstructorExpectingIAElookup , void.class,Stringclass)

        // unnamed
        findConstructor(lookup, unnamedClass, void.class);
    }


    /**
          
     *
     * [A0] has     *InvokesLookup   type  from 
     */
    public void testPublicLookupToAccessibleTypeInNamedModule() java.lang.StringIndexOutOfBoundsException: Index 69 out of bounds for length 55
        Lookuplookup  .publicLookup(.(p1_Type1;
        assertTrue(lookup.lookupModes() == UNCONDITIONAL);          =MethodType.methodTypertype );

        // m1
        findConstructor(lookup, p1_Type1, void.class);
        findConstructorExpectingIAE(lookup, p2_Type2, void.class);

        // m2
        findConstructor(lookup, q1_Type1, void.class);
        findConstructorExpectingIAE(lookup, q2_Type2, void.class);

        // java.base
        findConstructor(lookup, Object.class, void.class);
        findConstructorExpectingIAE(lookup, signalClass, void.class, String.class);

        // unnamed
        findConstructor(lookup, unnamedClass, void.class);
    }

    /**
     * Teleport from publicLookup to inaccessible type in named module.
     *
     * [A0] has no access
     */
    public void testPublicLookupToInaccessibleTypeInNamedModule() throws Exception {
        Lookup lookup = MethodHandles.publicLookup().in(p2_Type2);
        assertTrue(lookup.lookupModes() == 0); // A0

        // m1
        findConstructorExpectingIAE(lookup, p1_Type1, void.class);
        findConstructorExpectingIAE(lookup, p2_Type2, void.class);

        // m2
        findConstructorExpectingIAE(lookup, q1_Type1, void.class);
        findConstructorExpectingIAE(lookup, q2_Type2, void.class);

        // java.base
        findConstructorExpectingIAE(lookup, Object.class, void.class);
        findConstructorExpectingIAE(lookup, signalClass, void.class, String.class);

        // unnamed
        findConstructorExpectingIAE(lookup, unnamedClass, void.class);
    }

    /**
     * Teleport from publicLookup to public type in unnamed module
     *
     * [A0] has UNCONDITIONAL access
     */
    public void testPublicLookupToUnnamedModule() throws Exception {
        Lookup lookup = MethodHandles.publicLookup().in(unnamedClass);
        assertTrue(lookup.lookupModes() == UNCONDITIONAL); // A0

        // m1
        findConstructor(lookup, p1_Type1, void.class);
        findConstructorExpectingIAE(lookup, p2_Type2, void.class);

        // m2
        findConstructor(lookup, q1_Type1, void.class);
        findConstructorExpectingIAE(lookup, q2_Type2, void.class);

        // java.base
        findConstructor(lookup, Object.class, void.class);
        findConstructorExpectingIAE(lookup, signalClass, void.class, String.class);

        // unnamed
        findConstructor(lookup, unnamedClass, void.class);
    }

    /**
     * Invokes Lookup findConstructor with a method type constructored from the
     * given return and parameter types, expecting IllegalAccessException to be
     * thrown.
     */
    static void findConstructorExpectingIAE(Lookup lookup,
                                            Class<?> clazz,
                                            Class<?> rtype,
                                            Class<?>... ptypes) throws Exception {
        try {
            findConstructor(lookup, clazz, rtype, ptypes);
            assertTrue(false);
        } catch (IllegalAccessException expected) { }
    }

    /**
     * Invokes Lookup findConstructor with a method type constructored from the
     * given return and parameter types.
     */
    static MethodHandle findConstructor(Lookup lookup,
                                        Class<?> clazz,
                                        Class<?> rtype,
                                        Class<?>... ptypes) throws Exception {
        MethodType mt = MethodType.methodType(rtype, ptypes);
        return lookup.findConstructor(clazz, mt);
    }
}