software.betamax.TapeMode.java Source code

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Here is the source code for software.betamax.TapeMode.java

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/*
 * Copyright 2011 the original author or authors.
 *
 * 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 software.betamax;

import com.google.common.base.Optional;

public enum TapeMode {

    UNDEFINED(false, false, false), READ_WRITE(true, true, false), READ_ONLY(true, false, false), READ_SEQUENTIAL(
            true, false, true), WRITE_ONLY(false, true, false), WRITE_SEQUENTIAL(false, true, true);

    private final boolean readable;
    private final boolean writable;
    private final boolean sequential;

    TapeMode(boolean readable, boolean writable, boolean sequential) {
        this.readable = readable;
        this.writable = writable;
        this.sequential = sequential;
    }

    public boolean isReadable() {
        return readable;
    }

    public boolean isWritable() {
        return writable;
    }

    public boolean isSequential() {
        return sequential;
    }

    /**
     * For compatibility with Groovy truth.
     */
    public boolean asBoolean() {
        return readable || writable;
    }

    public Optional<TapeMode> toOptional() {
        if (this.equals(TapeMode.UNDEFINED)) {
            return Optional.absent();
        } else {
            return Optional.of(this);
        }
    }

}