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 }