1 /*

     2  * Copyright (c) 2012, 2014, 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  */

    25 package com.sun.tools.jdeps;

    26 

    27 import com.sun.tools.classfile.ClassFile;

    28 import com.sun.tools.classfile.Dependency.Location;

    29 

    30 import java.io.IOException;

    31 import java.io.UncheckedIOException;

    32 import java.nio.file.Path;

    33 import java.util.HashSet;

    34 import java.util.Map;

    35 import java.util.Set;

    36 import java.util.concurrent.ConcurrentHashMap;

    37 

    38 /**

    39  * Represents the source of the class files.

    40  */

    41 public class Archive {

    42     public static Archive getInstance(Path p) {

    43         try {

    44             return new Archive(p, ClassFileReader.newInstance(p));

    45         } catch (IOException e) {

    46             throw new UncheckedIOException(e);

    47         }

    48     }

    49 

    50     private final Path path;

    51     private final String filename;

    52     private final ClassFileReader reader;

    53     protected Map<Location, Set<Location>> deps = new ConcurrentHashMap<>();

    54 

    55     protected Archive(String name) {

    56         this(name, null);

    57     }

    58     protected Archive(String name, ClassFileReader reader) {

    59         this.path = null;

    60         this.filename = name;

    61         this.reader = reader;

    62     }

    63     protected Archive(Path p, ClassFileReader reader) {

    64         this.path = p;

    65         this.filename = path.getFileName().toString();

    66         this.reader = reader;

    67     }

    68 

    69     public ClassFileReader reader() {

    70         return reader;

    71     }

    72 

    73     public String getName() {

    74         return filename;

    75     }

    76 

    77     public void addClass(Location origin) {

    78         deps.computeIfAbsent(origin, _k -> new HashSet<>());

    79     }

    80 

    81     public void addClass(Location origin, Location target) {

    82         deps.computeIfAbsent(origin, _k -> new HashSet<>()).add(target);

    83     }

    84 

    85     public Set<Location> getClasses() {

    86         return deps.keySet();

    87     }

    88 

    89     public void visitDependences(Visitor v) {

    90         for (Map.Entry<Location,Set<Location>> e: deps.entrySet()) {

    91             for (Location target : e.getValue()) {

    92                 v.visit(e.getKey(), target);

    93             }

    94         }

    95     }

    96 

    97     public boolean isEmpty() {

    98         return getClasses().isEmpty();

    99     }

   100 

   101     public String getPathName() {

   102         return path != null ? path.toString() : filename;

   103     }

   104 

   105     public String toString() {

   106         return filename;

   107     }

   108 

   109     public Path path() {

   110         return path;

   111     }

   112 

   113     interface Visitor {

   114         void visit(Location origin, Location target);

   115     }

   116 }