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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 FloatValue} represents a particular float value.
 *
 * @author Eric Lafortune
 */
public final class ParticularFloatValue extends SpecificFloatValue {
  private final float value;

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

  // Implementations for FloatValue.

  public float value() {
    return value;
  }

  // Implementations of unary methods of FloatValue.

  public FloatValue negate() {
    return new ParticularFloatValue(-value);
  }

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

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

  public DoubleValue convertToDouble() {
    return new ParticularDoubleValue((float) value);
  }

  // Implementations of binary methods of FloatValue.

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

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

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

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

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

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

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

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

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

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

  // Implementations of binary FloatValue methods with ParticularFloatValue
  // arguments.

  public FloatValue generalize(ParticularFloatValue other) {
    // Also handle NaN and Infinity.
    return Float.floatToRawIntBits(this.value) == Float.floatToRawIntBits(other.value)
        ? this
        : BasicValueFactory.FLOAT_VALUE;
  }

  public FloatValue add(ParticularFloatValue other) {
    return new ParticularFloatValue(this.value + other.value);
  }

  public FloatValue subtract(ParticularFloatValue other) {
    return new ParticularFloatValue(this.value - other.value);
  }

  public FloatValue subtractFrom(ParticularFloatValue other) {
    return new ParticularFloatValue(other.value - this.value);
  }

  public FloatValue multiply(ParticularFloatValue other) {
    return new ParticularFloatValue(this.value * other.value);
  }

  public FloatValue divide(ParticularFloatValue other) {
    return new ParticularFloatValue(this.value / other.value);
  }

  public FloatValue divideOf(ParticularFloatValue other) {
    return new ParticularFloatValue(other.value / this.value);
  }

  public FloatValue remainder(ParticularFloatValue other) {
    return new ParticularFloatValue(this.value % other.value);
  }

  public FloatValue remainderOf(ParticularFloatValue other) {
    return new ParticularFloatValue(other.value % this.value);
  }

  public IntegerValue compare(ParticularFloatValue 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)
        && Float.floatToIntBits(this.value)
            == Float.floatToIntBits(((ParticularFloatValue) object).value);
  }

  public int hashCode() {
    return super.hashCode() ^ Float.floatToIntBits(value);
  }

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