src/main/java/com/android/apkzlib/zip/ZipFieldInvariantNonNegative.java


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/*
 * Copyright (C) 2015 The Android Open Source Project
 *
 * 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.android.apkzlib.zip;

/**
 * Invariant that verifies a field's value is not negative.
 */
class ZipFieldInvariantNonNegative implements ZipFieldInvariant {

    @Override
    public boolean isValid(long value) {
        return value >= 0;
    }

    @Override
    public String getName() {
        return "Is positive";
    }
}