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// Copyright 2015 The Bazel Authors. All rights reserved.
//
// 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.
package com.google.devtools.build.lib.syntax.compiler;
import net.bytebuddy.description.field.FieldDescription;
import net.bytebuddy.description.method.MethodDescription;
import java.util.Arrays;
/**
* Utilities for reflective access of declared methods.
*/
public class ReflectionUtils {
/**
* Get a Byte Buddy {@link MethodDescription} for a method from a class.
*
* @throws Error when the method cannot be found via reflection
*/
public static MethodDescription.ForLoadedMethod getMethod(
Class<?> clazz, String name, Class<?>... parameterTypes) {
try {
return new MethodDescription.ForLoadedMethod(clazz.getMethod(name, parameterTypes));
} catch (NoSuchMethodException e) {
throw new Error(
String.format(
"Error when reflectively getting method %s with parameter types %s from class %s",
name,
Arrays.toString(parameterTypes),
clazz),
e);
}
}
/**
* Get a Byte Buddy {@link FieldDescription} for a field of a class.
*
* @throws Error when the field cannot be found via reflection
*/
public static FieldDescription getField(Class<?> clazz, String name) {
try {
return new FieldDescription.ForLoadedField(clazz.getField(name));
} catch (NoSuchFieldException e) {
throw new RuntimeException(
String.format("Error when reflectively getting field %s from class %s", name, clazz), e);
}
}
}
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