99 lines
3.3 KiB
Java
99 lines
3.3 KiB
Java
/*
|
|
* 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;
|
|
}
|
|
}
|
|
}
|