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ProGuardCORE is a free library to read, analyze, modify, and write Java class files.
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/*
 * ProGuardCORE -- library to process Java bytecode.
 *
 * Copyright (c) 2002-2021 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.evaluation.value;

/**
 * This {@link DoubleValue} represents a particular double value.
 *
 * @author Eric Lafortune
 */
public final class ParticularDoubleValue extends SpecificDoubleValue {
  private final double value;

  /** Creates a new particular double value. */
  public ParticularDoubleValue(double value) {
    this.value = value;
  }

  // Implementations for DoubleValue.

  public double value() {
    return value;
  }

  // Implementations of unary methods of DoubleValue.

  public DoubleValue negate() {
    return new ParticularDoubleValue(-value);
  }

  public IntegerValue convertToInteger() {
    return new ParticularIntegerValue((int) value);
  }

  public LongValue convertToLong() {
    return new ParticularLongValue((long) value);
  }

  public FloatValue convertToFloat() {
    return new ParticularFloatValue((float) value);
  }

  // Implementations of binary methods of DoubleValue.

  public DoubleValue generalize(DoubleValue other) {
    return other.generalize(this);
  }

  public DoubleValue add(DoubleValue other) {
    // Careful: -0.0 + 0.0 == 0.0
    // return value == 0.0 ? other : other.add(this);
    return other.add(this);
  }

  public DoubleValue subtract(DoubleValue other) {
    // Careful: -0.0 + 0.0 == 0.0
    // return value == 0.0 ? other.negate() : other.subtractFrom(this);
    return other.subtractFrom(this);
  }

  public DoubleValue subtractFrom(DoubleValue other) {
    // Careful: -0.0 + 0.0 == 0.0
    // return value == 0.0 ? other : other.subtract(this);
    return other.subtract(this);
  }

  public DoubleValue multiply(DoubleValue other) {
    return other.multiply(this);
  }

  public DoubleValue divide(DoubleValue other) {
    return other.divideOf(this);
  }

  public DoubleValue divideOf(DoubleValue other) {
    return other.divide(this);
  }

  public DoubleValue remainder(DoubleValue other) {
    return other.remainderOf(this);
  }

  public DoubleValue remainderOf(DoubleValue other) {
    return other.remainder(this);
  }

  public IntegerValue compare(DoubleValue other) {
    return other.compareReverse(this);
  }

  // Implementations of binary DoubleValue methods with ParticularDoubleValue
  // arguments.

  public DoubleValue generalize(ParticularDoubleValue other) {
    // Also handle NaN and Infinity.
    return Double.doubleToRawLongBits(this.value) == Double.doubleToRawLongBits(other.value)
        ? this
        : BasicValueFactory.DOUBLE_VALUE;
  }

  public DoubleValue add(ParticularDoubleValue other) {
    return new ParticularDoubleValue(this.value + other.value);
  }

  public DoubleValue subtract(ParticularDoubleValue other) {
    return new ParticularDoubleValue(this.value - other.value);
  }

  public DoubleValue subtractFrom(ParticularDoubleValue other) {
    return new ParticularDoubleValue(other.value - this.value);
  }

  public DoubleValue multiply(ParticularDoubleValue other) {
    return new ParticularDoubleValue(this.value * other.value);
  }

  public DoubleValue divide(ParticularDoubleValue other) {
    return new ParticularDoubleValue(this.value / other.value);
  }

  public DoubleValue divideOf(ParticularDoubleValue other) {
    return new ParticularDoubleValue(other.value / this.value);
  }

  public DoubleValue remainder(ParticularDoubleValue other) {
    return new ParticularDoubleValue(this.value % other.value);
  }

  public DoubleValue remainderOf(ParticularDoubleValue other) {
    return new ParticularDoubleValue(other.value % this.value);
  }

  public IntegerValue compare(ParticularDoubleValue other) {
    return this.value < other.value
        ? ParticularValueFactory.INTEGER_VALUE_M1
        : this.value == other.value
            ? ParticularValueFactory.INTEGER_VALUE_0
            : ParticularValueFactory.INTEGER_VALUE_1;
  }

  // Implementations for Value.

  public boolean isParticular() {
    return true;
  }

  // Implementations for Object.

  public boolean equals(Object object) {
    // Also handle NaN and Infinity.
    return super.equals(object)
        && Double.doubleToLongBits(this.value)
            == Double.doubleToLongBits(((ParticularDoubleValue) object).value);
  }

  public int hashCode() {
    return super.hashCode() ^ (int) Double.doubleToLongBits(value);
  }

  public String toString() {
    return value + "d";
  }
}