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*
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* ANY WARRANTY ; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE . See the GNU General Public License
* version 2 for more details ( a copy is included in the LICENSE file that
* accompanied this code ) .
*
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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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import java.lang.Class ;
import java.lang.invoke.MethodHandles;
import java.lang.invoke.MethodType;
import java.lang.constant.ClassDesc;
import java.lang.constant.Constable;
import java.lang.constant.ConstantDesc;
import java.lang.constant.ConstantDescs;
import java.util.List;
import java.util.Optional;
import java.util.stream.Stream;
import static org.testng.Assert .assertEquals;
/**
* Base class for XxxDesc tests
*/
public abstract class SymbolicDescTest {
public static final MethodHandles.Lookup LOOKUP = MethodHandles.lookup();
static List<String> someDescs = List.of("Ljava/lang/String;" , "Ljava/util/List;" );
static String[] basicDescs = Stream.concat(Stream.of(Primitives.values())
.filter(p -> p != Primitives.VOID )
.map(p -> p.descriptor),
someDescs.stream())
.toArray(String[]::new );
static String[] paramDescs = Stream.of(basicDescs)
.flatMap(d -> Stream.of(d, "[" + d))
.toArray(String[]::new );
static String[] returnDescs = Stream.concat(Stream.of(paramDescs), Stream.of("V" )).toArray(String[]::new );
enum Primitives {
INT ("I" , "int" , int .class , int [].class , ConstantDescs.CD_int),
LONG ("J" , "long" , long .class , long [].class , ConstantDescs.CD_long),
SHORT ("S" , "short" , short .class , short [].class , ConstantDescs.CD_short),
BYTE ("B" , "byte" , byte .class , byte [].class , ConstantDescs.CD_byte),
CHAR ("C" , "char" , char .class , char [].class , ConstantDescs.CD_char),
FLOAT ("F" , "float" , float .class , float [].class , ConstantDescs.CD_float),
DOUBLE ("D" , "double" , double .class , double [].class , ConstantDescs.CD_double),
BOOLEAN ("Z" , "boolean" , boolean .class , boolean [].class , ConstantDescs.CD_boolean),
VOID ("V" , "void" , void .class , null , ConstantDescs.CD_void);
public final String descriptor;
public final String name;
public final Class <?> clazz;
public final Class <?> arrayClass;
public final ClassDesc classDesc;
Primitives(String descriptor, String name, Class <?> clazz, Class <?> arrayClass, ClassDesc desc) {
this .descriptor = descriptor;
this .name = name;
this .clazz = clazz;
this .arrayClass = arrayClass;
classDesc = desc;
}
}
static String classToDescriptor(Class <?> clazz) {
return MethodType.methodType(clazz).toMethodDescriptorString().substring(2 );
}
static ClassDesc classToDesc(Class <?> c) {
return ClassDesc.ofDescriptor(c.descriptorString());
}
static <T> void testSymbolicDesc(ConstantDesc desc) throws ReflectiveOperationException {
testSymbolicDesc(desc, false );
}
static <T> void testSymbolicDescForwardOnly(ConstantDesc desc) throws ReflectiveOperationException {
testSymbolicDesc(desc, true );
}
private static <T> void testSymbolicDesc(ConstantDesc desc, boolean forwardOnly) throws ReflectiveOperationException {
// Round trip sym -> resolve -> toSymbolicDesc
Constable constable = (Constable) desc.resolveConstantDesc(LOOKUP);
Optional<? extends ConstantDesc> described = constable.describeConstable();
if (!forwardOnly) {
assertEquals(desc, described.orElseThrow());
}
// Round trip sym -> quoted sym -> resolve
if (desc instanceof Constable) {
Optional<ConstantDesc> opt = (Optional<ConstantDesc>) ((Constable) desc).describeConstable();
ConstantDesc sr = (ConstantDesc) opt.orElseThrow().resolveConstantDesc(LOOKUP);
assertEquals(sr, desc);
}
}
}
Messung V0.5 in Prozent C=93 H=93 G=92
¤ Dauer der Verarbeitung: 0.3 Sekunden
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