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ProGuardCORE is a free library to read, analyze, modify, and write Java class files.

There is a newer version: 9.1.6

/*
 * ProGuardCORE -- library to process Java bytecode.
 *
 * Copyright (c) 2002-2022 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.analysis.cpa.bam;

import proguard.analysis.cpa.interfaces.AbstractState;
import proguard.analysis.cpa.interfaces.CfaEdge;
import proguard.analysis.cpa.interfaces.CfaNode;
import proguard.analysis.cpa.interfaces.ProgramLocationDependent;
import proguard.analysis.datastructure.callgraph.Call;
import proguard.classfile.Signature;

/**
 * This {@link ReduceOperator} returns the original {@link AbstractState} without performing any
 * reduction.
 *
 * @author Carlo Alberto Pozzoli
 */
public class NoOpReduceOperator<
        CfaNodeT extends CfaNode,
        CfaEdgeT extends CfaEdge,
        SignatureT extends Signature>
    implements ReduceOperator {

  // Implementations for ReduceOperator

  @Override
  public AbstractState reduce(
      AbstractState expandedInitialState, CfaNodeT blockEntryNode, Call call) {
    AbstractState result = expandedInitialState.copy();
    ((ProgramLocationDependent) result)
        .setProgramLocation(blockEntryNode);
    return result;
  }
}