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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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* version 2 for more details (a copy is included in the LICENSE file that
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*
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* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*/
/* @test
* @bug 8022066
* @summary smoke test for method handle constants
* @build indify.Indify
* @compile MethodHandleConstants.java
* @run main/othervm
* indify.Indify
* --verify-specifier-count=4
* --expand-properties --classpath ${test.classes}
* --java test.java.lang.invoke.MethodHandleConstants --check-output
* @run main/othervm
* -Djava.security.manager=allow
* indify.Indify
* --expand-properties --classpath ${test.classes}
* --java test.java.lang.invoke.MethodHandleConstants --security-manager
*/
package test.java.lang.invoke;
import java.util.*;
import java.io.*;
import java.lang.invoke.*;
import java.security.*;
import static java.lang.invoke.MethodHandles.*;
import static java.lang.invoke.MethodType.*;
public class MethodHandleConstants {
public static void main(String... av)
throws Throwable {
if (av.length > 0 && av[0].equals(
"--check-output" )) openBuf();
if (av.length > 0 && av[0].equals(
"--security-manager" )) setSM();
System.out.println(
"Obtaining method handle constants:" );
testCase(MH_String_replace_C2(), String.
class ,
"replace" , String.
class , String.
class , char .class , char .class );
testCase(MH_MethodHandle_invokeExact_SC2(), MethodHandle.class , "invokeExact" , String.class , MethodHandle.class , String.class , char .class , char .class );
testCase(MH_MethodHandle_invoke_SC2(), MethodHandle.class , "invoke" , String.class , MethodHandle.class , String.class , char .class , char .class );
testCase(MH_Class_forName_S(), Class .class , "forName" , Class .class , String.class );
testCase(MH_Class_forName_SbCL(), Class .class , "forName" , Class .class , String.class , boolean .class , ClassLoader.class );
System.out.println("Done." );
closeBuf();
}
private static void testCase(MethodHandle mh, Class <?> defc, String name, Class <?> rtype, Class <?>... ptypes) throws Throwable {
System.out.println(mh);
// we include defc, because we assume it is a non-static MH:
MethodType mt = methodType(rtype, ptypes);
assertEquals(mh.type(), mt);
// FIXME: Use revealDirect to find out more
}
private static void assertEquals(Object exp, Object act) {
if (exp == act || (exp != null && exp.equals(act))) return ;
throw new AssertionError("not equal: " +exp+", " +act);
}
private static void setSM() {
Policy.setPolicy(new TestPolicy());
System.setSecurityManager(new SecurityManager());
}
private static PrintStream oldOut;
private static ByteArrayOutputStream buf;
private static void openBuf() {
oldOut = System.out;
buf = new ByteArrayOutputStream();
System.setOut(new PrintStream(buf));
}
private static void closeBuf() {
if (buf == null ) return ;
System.out.flush();
System.setOut(oldOut);
String[] haveLines = new String(buf.toByteArray()).split("[\n\r]+" );
for (String line : haveLines) System.out.println(line);
Iterator<String> iter = Arrays.asList(haveLines).iterator();
for (String want : EXPECT_OUTPUT) {
String have = iter.hasNext() ? iter.next() : "[EOF]" ;
if (want.equals(have)) continue ;
System.err.println("want line: " +want);
System.err.println("have line: " +have);
throw new AssertionError("unexpected output: " +have);
}
if (iter.hasNext())
throw new AssertionError("unexpected output: " +iter.next());
}
private static final String[] EXPECT_OUTPUT = {
"Obtaining method handle constants:" ,
"MethodHandle(String,char,char)String" ,
"MethodHandle(MethodHandle,String,char,char)String" ,
"MethodHandle(MethodHandle,String,char,char)String" ,
"MethodHandle(String)Class" ,
"MethodHandle(String,boolean,ClassLoader)Class" ,
"Done."
};
// String.replace(String, char, char)
private static MethodType MT_String_replace_C2() {
shouldNotCallThis();
return methodType(String.class , char .class , char .class );
}
private static MethodHandle MH_String_replace_C2() throws ReflectiveOperationException {
shouldNotCallThis();
return lookup().findVirtual(String.class , "replace" , MT_String_replace_C2());
}
// MethodHandle.invokeExact(...)
private static MethodType MT_MethodHandle_invokeExact_SC2() {
shouldNotCallThis();
return methodType(String.class , String.class , char .class , char .class );
}
private static MethodHandle MH_MethodHandle_invokeExact_SC2() throws ReflectiveOperationException {
shouldNotCallThis();
return lookup().findVirtual(MethodHandle.class , "invokeExact" , MT_MethodHandle_invokeExact_SC2());
}
// MethodHandle.invoke(...)
private static MethodType MT_MethodHandle_invoke_SC2() {
shouldNotCallThis();
return methodType(String.class , String.class , char .class , char .class );
}
private static MethodHandle MH_MethodHandle_invoke_SC2() throws ReflectiveOperationException {
shouldNotCallThis();
return lookup().findVirtual(MethodHandle.class , "invoke" , MT_MethodHandle_invoke_SC2());
}
// Class.forName(String)
private static MethodType MT_Class_forName_S() {
shouldNotCallThis();
return methodType(Class .class , String.class );
}
private static MethodHandle MH_Class_forName_S() throws ReflectiveOperationException {
shouldNotCallThis();
return lookup().findStatic(Class .class , "forName" , MT_Class_forName_S());
}
// Class.forName(String, boolean, ClassLoader)
private static MethodType MT_Class_forName_SbCL() {
shouldNotCallThis();
return methodType(Class .class , String.class , boolean .class , ClassLoader.class );
}
private static MethodHandle MH_Class_forName_SbCL() throws ReflectiveOperationException {
shouldNotCallThis();
return lookup().findStatic(Class .class , "forName" , MT_Class_forName_SbCL());
}
private static void shouldNotCallThis() {
// if this gets called, the transformation has not taken place
if (System.getProperty("MethodHandleConstants.allow-untransformed" ) != null ) return ;
throw new AssertionError("this code should be statically transformed away by Indify" );
}
static class TestPolicy extends Policy {
static final Policy DEFAULT_POLICY = Policy.getPolicy();
final PermissionCollection permissions = new Permissions();
TestPolicy() {
permissions.add(new java.io.FilePermission("<>" , "read" ));
}
public PermissionCollection getPermissions(ProtectionDomain domain) {
return permissions;
}
public PermissionCollection getPermissions(CodeSource codesource) {
return permissions;
}
public boolean implies(ProtectionDomain domain, Permission perm) {
return permissions.implies(perm) || DEFAULT_POLICY.implies(domain, perm);
}
}
}
Messung V0.5 C=93 H=92 G=92
¤ Dauer der Verarbeitung: 0.10 Sekunden
(vorverarbeitet)
¤
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