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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) 2002-2020 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.classfile.constant;

import proguard.classfile.*;
import proguard.classfile.constant.visitor.*;

/**
 * This unofficial Constant represents an array of primitives in the constant pool. It is not
 * supported by any Java specification and therefore only for internal use.
 *
 * @author Eric Lafortune
 */
public class PrimitiveArrayConstant extends Constant {
  public Object values;

  /** Creates an uninitialized PrimitiveArrayConstant. */
  public PrimitiveArrayConstant() {}

  /** Creates a new PrimitiveArrayConstant with the given array of values. */
  public PrimitiveArrayConstant(Object values) {
    this.values = values;
  }

  /** Returns the type of the elements of the primitive array. */
  public char getPrimitiveType() {
    return values instanceof boolean[]
        ? TypeConstants.BOOLEAN
        : values instanceof byte[]
            ? TypeConstants.BYTE
            : values instanceof char[]
                ? TypeConstants.CHAR
                : values instanceof short[]
                    ? TypeConstants.SHORT
                    : values instanceof int[]
                        ? TypeConstants.INT
                        : values instanceof float[]
                            ? TypeConstants.FLOAT
                            : values instanceof long[]
                                ? TypeConstants.LONG
                                : values instanceof double[] ? TypeConstants.DOUBLE : 0;
  }

  /** Returns the length of the primitive array. */
  public int getLength() {
    return values instanceof boolean[]
        ? ((boolean[]) values).length
        : values instanceof byte[]
            ? ((byte[]) values).length
            : values instanceof char[]
                ? ((char[]) values).length
                : values instanceof short[]
                    ? ((short[]) values).length
                    : values instanceof int[]
                        ? ((int[]) values).length
                        : values instanceof float[]
                            ? ((float[]) values).length
                            : values instanceof long[]
                                ? ((long[]) values).length
                                : values instanceof double[] ? ((double[]) values).length : 0;
  }

  /** Returns the values. */
  public Object getValues() {
    return values;
  }

  /** Applies the given PrimitiveArrayConstantVisitor to the primitive array. */
  public void primitiveArrayAccept(
      Clazz clazz, PrimitiveArrayConstantVisitor primitiveArrayConstantVisitor) {
    // The primitive arrays themselves don't accept visitors, so we have to
    // use instanceof tests.
    if (values instanceof boolean[]) {
      primitiveArrayConstantVisitor.visitBooleanArrayConstant(clazz, this, (boolean[]) values);
    } else if (values instanceof byte[]) {
      primitiveArrayConstantVisitor.visitByteArrayConstant(clazz, this, (byte[]) values);
    } else if (values instanceof char[]) {
      primitiveArrayConstantVisitor.visitCharArrayConstant(clazz, this, (char[]) values);
    } else if (values instanceof short[]) {
      primitiveArrayConstantVisitor.visitShortArrayConstant(clazz, this, (short[]) values);
    } else if (values instanceof int[]) {
      primitiveArrayConstantVisitor.visitIntArrayConstant(clazz, this, (int[]) values);
    } else if (values instanceof float[]) {
      primitiveArrayConstantVisitor.visitFloatArrayConstant(clazz, this, (float[]) values);
    } else if (values instanceof long[]) {
      primitiveArrayConstantVisitor.visitLongArrayConstant(clazz, this, (long[]) values);
    } else if (values instanceof double[]) {
      primitiveArrayConstantVisitor.visitDoubleArrayConstant(clazz, this, (double[]) values);
    }
  }

  /**
   * Applies the given PrimitiveArrayConstantElementVisitor to all elements of the primitive array.
   */
  public void primitiveArrayElementsAccept(
      Clazz clazz, PrimitiveArrayConstantElementVisitor primitiveArrayConstantElementVisitor) {
    // The primitive arrays themselves don't accept visitors, so we have to
    // use instanceof tests.
    if (values instanceof boolean[]) {
      boolean[] booleanValues = (boolean[]) this.values;
      for (int index = 0; index < booleanValues.length; index++) {
        primitiveArrayConstantElementVisitor.visitBooleanArrayConstantElement(
            clazz, this, index, booleanValues[index]);
      }
    } else if (values instanceof byte[]) {
      byte[] byteValues = (byte[]) this.values;
      for (int index = 0; index < byteValues.length; index++) {
        primitiveArrayConstantElementVisitor.visitByteArrayConstantElement(
            clazz, this, index, byteValues[index]);
      }
    } else if (values instanceof char[]) {
      char[] charValues = (char[]) this.values;
      for (int index = 0; index < charValues.length; index++) {
        primitiveArrayConstantElementVisitor.visitCharArrayConstantElement(
            clazz, this, index, charValues[index]);
      }
    } else if (values instanceof short[]) {
      short[] shortValues = (short[]) this.values;
      for (int index = 0; index < shortValues.length; index++) {
        primitiveArrayConstantElementVisitor.visitShortArrayConstantElement(
            clazz, this, index, shortValues[index]);
      }
    } else if (values instanceof int[]) {
      int[] intValues = (int[]) this.values;
      for (int index = 0; index < intValues.length; index++) {
        primitiveArrayConstantElementVisitor.visitIntArrayConstantElement(
            clazz, this, index, intValues[index]);
      }
    } else if (values instanceof float[]) {
      float[] floatValues = (float[]) this.values;
      for (int index = 0; index < floatValues.length; index++) {
        primitiveArrayConstantElementVisitor.visitFloatArrayConstantElement(
            clazz, this, index, floatValues[index]);
      }
    } else if (values instanceof long[]) {
      long[] longValues = (long[]) this.values;
      for (int index = 0; index < longValues.length; index++) {
        primitiveArrayConstantElementVisitor.visitLongArrayConstantElement(
            clazz, this, index, longValues[index]);
      }
    } else if (values instanceof double[]) {
      double[] doubleValues = (double[]) this.values;
      for (int index = 0; index < doubleValues.length; index++) {
        primitiveArrayConstantElementVisitor.visitDoubleArrayConstantElement(
            clazz, this, index, doubleValues[index]);
      }
    }
  }

  // Implementations for Constant.

  @Override
  public int getTag() {
    return Constant.PRIMITIVE_ARRAY;
  }

  @Override
  public boolean isCategory2() {
    return false;
  }

  @Override
  public void accept(Clazz clazz, ConstantVisitor constantVisitor) {
    constantVisitor.visitPrimitiveArrayConstant(clazz, this);
  }

  // Implementations for Object.

  @Override
  public boolean equals(Object object) {
    if (object == null || !this.getClass().equals(object.getClass())) {
      return false;
    }

    if (this == object) {
      return true;
    }

    PrimitiveArrayConstant other = (PrimitiveArrayConstant) object;

    return this.values == other.values;
  }

  @Override
  public int hashCode() {
    return Constant.PRIMITIVE_ARRAY ^ values.hashCode();
  }

  @Override
  public String toString() {
    return "PrimitiveArray(" + getPrimitiveType() + "[" + getLength() + "])";
  }
}