jdk8-mips64-public/jaxws: src/share/jaxws_classes/com/sun/tools/internal/xjc/reader/gbind/ConnectedComponent.java@0989ad8c0860

8010393: Update JAX-WS RI to 2.2.9-b12941
Reviewed-by: alanb, erikj
Contributed-by: miroslav.kos@oracle.com, martin.grebac@oracle.com

     1 /*

     2  * Copyright (c) 1997, 2011, Oracle and/or its affiliates. All rights reserved.

     3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

     4  *

     5  * This code is free software; you can redistribute it and/or modify it

     6  * under the terms of the GNU General Public License version 2 only, as

     7  * published by the Free Software Foundation.  Oracle designates this

     8  * particular file as subject to the "Classpath" exception as provided

     9  * by Oracle in the LICENSE file that accompanied this code.

    10  *

    11  * This code is distributed in the hope that it will be useful, but WITHOUT

    12  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

    13  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License

    14  * version 2 for more details (a copy is included in the LICENSE file that

    15  * accompanied this code).

    16  *

    17  * You should have received a copy of the GNU General Public License version

    18  * 2 along with this work; if not, write to the Free Software Foundation,

    19  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

    20  *

    21  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

    22  * or visit www.oracle.com if you need additional information or have any

    23  * questions.

    24  */

    26 package com.sun.tools.internal.xjc.reader.gbind;

    28 import java.util.ArrayList;

    29 import java.util.Iterator;

    30 import java.util.List;

    32 /**

    33  * Represents one strongly-connected component

    34  * of the {@link Element} graph.

    35  *

    36  * @author Kohsuke Kawaguchi

    37  */

    38 public final class ConnectedComponent implements Iterable<Element> {

    39     /**

    40      * {@link Element}s that belong to this component.

    41      */

    42     private final List<Element> elements = new ArrayList<Element>();

    44     /*package*/ boolean isRequired;

    46     /**

    47      * Returns true iff this {@link ConnectedComponent}

    48      * can match a substring whose length is greater than 1.

    49      *

    50      * <p>

    51      * That means this property will become a collection property.

    52      */

    53     public final boolean isCollection() {

    54         assert !elements.isEmpty();

    56         // a strongly connected component by definition has a cycle,

    57         // so if its size is bigger than 1 there must be a cycle.

    58         if(elements.size()>1)

    59             return true;

    61         // if size is 1, it might be still forming a self-cycle

    62         Element n = elements.get(0);

    63         return n.hasSelfLoop();

    64     }

    66     /**

    67      * Returns true iff this {@link ConnectedComponent}

    68      * forms a cut set of a graph.

    69      *

    70      * <p>

    71      * That means any valid element sequence must have at least

    72      * one value for this property.

    73      */

    74     public final boolean isRequired() {

    75         return isRequired;

    76     }

    78     /*package*/void add(Element e) {

    79         assert !elements.contains(e);

    80         elements.add(e);

    81     }

    83     public Iterator<Element> iterator() {

    84         return elements.iterator();

    85     }

    87     /**

    88      * Just produces debug representation

    89      */

    90     public String toString() {

    91         String s = elements.toString();

    92         if(isRequired())

    93             s += '!';

    94         if(isCollection())

    95             s += '*';

    96         return s;

    97     }

    98 }

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