1 /*
   2  * Copyright (c) 2010, 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 
  26 package jdk.nashorn.internal.runtime;
  27 
  28 import java.io.Serializable;
  29 import java.util.Arrays;
  30 import java.util.Map;
  31 
  32 /**
  33  * Class representing a persistent compiled script.
  34  */
  35 public final class StoredScript implements Serializable {
  36 
  37     /** Compilation id */
  38     private final int compilationId;
  39 
  40     /** Main class name. */
  41     private final String mainClassName;
  42 
  43     /** Map of class names to class bytes. */
  44     private final Map<String, byte[]> classBytes;
  45 
  46     /** Constants array. */
  47     private final Object[] constants;
  48 
  49     /** Function initializers */
  50     private final Map<Integer, FunctionInitializer> initializers;
  51 
  52     private static final long serialVersionUID = 2958227232195298340L;
  53 
  54     /**
  55      * Constructor.
  56      *
  57      * @param mainClassName main class name
  58      * @param classBytes map of class names to class bytes
  59      * @param constants constants array
  60      */
  61     public StoredScript(final int compilationId, final String mainClassName, final Map<String, byte[]> classBytes, final Map<Integer, FunctionInitializer> initializers, final Object[] constants) {
  62         this.compilationId = compilationId;
  63         this.mainClassName = mainClassName;
  64         this.classBytes = classBytes;
  65         this.constants = constants;
  66         this.initializers = initializers;
  67     }
  68 
  69     public int getCompilationId() {
  70         return compilationId;
  71     }
  72 
  73     /**
  74      * Returns the main class name.
  75      * @return the main class name
  76      */
  77     public String getMainClassName() {
  78         return mainClassName;
  79     }
  80 
  81     /**
  82      * Returns a map of class names to class bytes.
  83      * @return map of class bytes
  84      */
  85     public Map<String, byte[]> getClassBytes() {
  86         return classBytes;
  87     }
  88 
  89     /**
  90      * Returns the constants array.
  91      * @return constants array
  92      */
  93     public Object[] getConstants() {
  94         return constants;
  95     }
  96 
  97     Map<Integer, FunctionInitializer> getInitializers() {
  98         return initializers;
  99     }
 100 
 101     @Override
 102     public int hashCode() {
 103         int hash = mainClassName.hashCode();
 104         hash = 31 * hash + classBytes.hashCode();
 105         hash = 31 * hash + Arrays.hashCode(constants);
 106         return hash;
 107     }
 108 
 109     @Override
 110     public boolean equals(final Object obj) {
 111         if (obj == this) {
 112             return true;
 113         }
 114         if (!(obj instanceof StoredScript)) {
 115             return false;
 116         }
 117 
 118         final StoredScript cs = (StoredScript) obj;
 119         return mainClassName.equals(cs.mainClassName)
 120                 && classBytes.equals(cs.classBytes)
 121                 && Arrays.equals(constants, cs.constants);
 122     }
 123 }