NotBooleanVariable.java

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// Copyright 2010-2018 Google LLC
// 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 com.google.ortools.sat;

public final class NotBooleanVariable implements Literal {
  public NotBooleanVariable(IntVar boolVar) {
    this.boolVar = boolVar;
  }

  @Override
  public int getIndex() {
    return -boolVar.getIndex() - 1;
  }

  @Override
  public Literal not() {
    return boolVar;
  }

  @Override
  public String getShortString() {
    return "not(" + boolVar.getShortString() + ")";
  }

  private final IntVar boolVar;
}