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ProGuardCORE is a free library to read, analyze, modify, and write Java class files.
/*
* ProGuardCORE -- library to process Java bytecode.
*
* Copyright (c) 2002-2020 Guardsquare NV
*
* 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 proguard.util;
/** This class provides a straightforward implementation of the Processable interface. */
public class SimpleProcessable implements Processable {
private static final boolean CHECK_OVERRIDE =
System.getProperty("proguard.processinginfo.check_overriding") != null;
public int processingFlags;
public Object processingInfo;
/** Creates an uninitialized SimpleProcessable. */
public SimpleProcessable() {}
/** Creates an initialized SimpleProcessable. */
public SimpleProcessable(int processingFlags, Object processingInfo) {
this.processingFlags = processingFlags;
this.processingInfo = processingInfo;
}
// Implementations for Processable.
@Override
public int getProcessingFlags() {
return processingFlags;
}
@Override
public void setProcessingFlags(int processingFlags) {
this.processingFlags = processingFlags;
}
/** Adds all given flags to this processable. */
public void addProcessingFlags(int... flags) {
for (int flag : flags) {
processingFlags = processingFlags | flag;
}
}
/** Removes all given flags from this processable. */
public void removeProcessingFlags(int... flags) {
for (int flag : flags) {
processingFlags = processingFlags & ~flag;
}
}
/** Checks whether all the given flags are set on this processable. */
public boolean hasProcessingFlags(int... flags) {
int allFlags = 0;
for (int flag : flags) {
allFlags = allFlags | flag;
}
return (~processingFlags & allFlags) == 0;
}
@Override
public Object getProcessingInfo() {
return processingInfo;
}
@Override
public void setProcessingInfo(Object processingInfo) {
if (CHECK_OVERRIDE) {
if (this.processingInfo != null
&& processingInfo != null
&& !this.processingInfo
.getClass()
.getName()
.equals(processingInfo.getClass().getName())) {
// Get the second (top-down) element of the stack trace (the setProcessingInfo call).
StackTraceElement[] stackTrace = Thread.currentThread().getStackTrace();
StackTraceElement stackTraceElement = stackTrace.length > 2 ? stackTrace[2] : null;
System.out.printf(
"Overriding processingInfo. Old:%s, New:%s. Stacktrace entry before last is:\n\t%s%n",
this.processingInfo.getClass().getName(),
processingInfo.getClass().getName(),
stackTraceElement);
}
}
this.processingInfo = processingInfo;
}
}
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