/*
 * This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License v1.0
 * which accompanies this distribution, and is available at
 * http://www.eclipse.org/legal/epl-v10.html.
 *
 * This file is a derivative of code released under the terms listed below.
 *
 */
/*
 * Copyright (c) 2009-2012,
 *
 * <p>Galois, Inc. (Aaron Tomb <atomb@galois.com>, Rogan Creswick <creswick@galois.com>, Adam
 * Foltzer <acfoltzer@galois.com>) Steve Suh <suhsteve@gmail.com>
 *
 * <p>All rights reserved.
 *
 * <p>Redistribution and use in source and binary forms, with or without modification, are permitted
 * provided that the following conditions are met:
 *
 * <p>1. Redistributions of source code must retain the above copyright notice, this list of
 * conditions and the following disclaimer.
 *
 * <p>2. Redistributions in binary form must reproduce the above copyright notice, this list of
 * conditions and the following disclaimer in the documentation and/or other materials provided with
 * the distribution.
 *
 * <p>3. The names of the contributors may not be used to endorse or promote products derived from
 * this software without specific prior written permission.
 *
 * <p>THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR
 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
 * FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY
 * WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */
package org.scandroid.spec;

import com.ibm.wala.classLoader.IClass;
import com.ibm.wala.classLoader.IField;
import com.ibm.wala.classLoader.IMethod;
import com.ibm.wala.core.util.strings.StringStuff;
import com.ibm.wala.ipa.cha.ClassHierarchy;
import java.util.ArrayList;
import java.util.Collection;
import java.util.List;

/** @author creswick */
public class StaticSpecs implements ISpecs {

  private final ClassHierarchy cha;
  private final String methodSignature;
  private final Collection<IField> fields;

  public StaticSpecs(ClassHierarchy cha, String methodSignature) {
    this.cha = cha;
    this.methodSignature = methodSignature;
    this.fields = collectFields();
  }

  /* (non-Javadoc)
   * @see org.scandroid.spec.ISpecs#getEntrypointSpecs()
   */
  @Override
  public MethodNamePattern[] getEntrypointSpecs() {
    return new MethodNamePattern[0];
  }

  /* (non-Javadoc)
   * @see org.scandroid.spec.ISpecs#getSourceSpecs()
   */
  @Override
  public SourceSpec[] getSourceSpecs() {
    //		List<SourceSpec> specs = Lists.newArrayList();
    //
    //		for (IField field : fields) {
    //			specs.add(new StaticFieldSourceSpec(field));
    //		}
    //
    //		return specs.toArray(new SourceSpec[] {});
    return new SourceSpec[] {};
  }

  private List<IField> collectFields() {
    List<IField> fields = new ArrayList<>();
    for (IClass cls : cha) {
      for (IField field : cls.getAllStaticFields()) {
        if (field.getFieldTypeReference().isReferenceType()) {
          fields.add(field);
        }
      }
    }
    return fields;
  }

  /* (non-Javadoc)
   * @see org.scandroid.spec.ISpecs#getSinkSpecs()
   */
  @Override
  public SinkSpec[] getSinkSpecs() {
    List<SinkSpec> specs = new ArrayList<>();
    Collection<IMethod> methods =
        cha.getPossibleTargets(StringStuff.makeMethodReference(methodSignature));
    for (IField field : fields) {
      if (!field.isFinal()) {
        for (IMethod method : methods) {
          specs.add(new StaticFieldSinkSpec(field, method));
        }
      }
    }
    return specs.toArray(new SinkSpec[] {});
  }
}
