/*
* Copyright ( C ) 2018 The Android Open Source Project
*
* Licensed under the Apache License , Version 2 . 0 ( the " License " ) ;
* you may not use this file except in compliance with the License .
* You may obtain a copy of the License at
*
* http : //www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing , software
* distributed under the License is distributed on an " AS IS " BASIS ,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND , either express or implied .
* See the License for the specific language governing permissions and
* limitations under the License .
*/
import java.lang.invoke.MethodHandles;
import java.lang.invoke.MethodType;
/** Class with helper methods for field and method lookups using java.lang.invoke. */
public class JLI {
public static boolean canDiscoverWithLookupFindGetter(
MethodHandles.Lookup lookup, Class <?> klass, String fieldName, Class <?> fieldType) {
try {
return lookup.findGetter(klass, fieldName, fieldType) != null ;
} catch (NoSuchFieldException e) {
return false ;
} catch (IllegalAccessException e) {
return true ;
}
}
public static boolean canDiscoverWithLookupFindSetter(
MethodHandles.Lookup lookup, Class <?> klass, String fieldName, Class <?> fieldType) {
try {
return lookup.findSetter(klass, fieldName, fieldType) != null ;
} catch (NoSuchFieldException e) {
return false ;
} catch (IllegalAccessException e) {
return true ;
}
}
public static boolean canDiscoverWithLookupFindStaticGetter(
MethodHandles.Lookup lookup, Class <?> klass, String fieldName, Class <?> fieldType) {
try {
return lookup.findStaticGetter(klass, fieldName, fieldType) != null ;
} catch (NoSuchFieldException e) {
return false ;
} catch (IllegalAccessException e) {
return true ;
}
}
public static boolean canDiscoverWithLookupFindStaticSetter(
MethodHandles.Lookup lookup, Class <?> klass, String fieldName, Class <?> fieldType) {
try {
return lookup.findStaticSetter(klass, fieldName, fieldType) != null ;
} catch (NoSuchFieldException e) {
return false ;
} catch (IllegalAccessException e) {
return true ;
}
}
public static boolean canDiscoverWithLookupFindConstructor(
MethodHandles.Lookup lookup, Class <?> klass, MethodType methodType) {
try {
return lookup.findConstructor(klass, methodType) != null ;
} catch (NoSuchMethodException e) {
return false ;
} catch (IllegalAccessException e) {
return true ;
}
}
public static boolean canDiscoverWithLookupFindVirtual(
MethodHandles.Lookup lookup, Class <?> klass, String methodName, MethodType methodType) {
try {
return lookup.findVirtual(klass, methodName, methodType) != null ;
} catch (NoSuchMethodException e) {
return false ;
} catch (IllegalAccessException e) {
return true ;
}
}
public static boolean canDiscoverWithLookupFindStatic(
MethodHandles.Lookup lookup, Class <?> klass, String methodName, MethodType methodType) {
try {
return lookup.findStatic(klass, methodName, methodType) != null ;
} catch (NoSuchMethodException e) {
return false ;
} catch (IllegalAccessException e) {
return true ;
}
}
}
Messung V0.5 in Prozent C=85 H=83 G=83
¤ Dauer der Verarbeitung: 0.1 Sekunden
(vorverarbeitet am 2026-06-29)
¤
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