1 /*
   2  * Copyright (c) 1994, 2003, 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 sun.tools.tree;
  27 
  28 import sun.tools.java.*;
  29 import sun.tools.asm.Assembler;
  30 import java.io.PrintStream;
  31 
  32 /**
  33  * WARNING: The contents of this source file are not part of any
  34  * supported API.  Code that depends on them does so at its own risk:
  35  * they are subject to change or removal without notice.
  36  */
  37 public
  38 class LongExpression extends ConstantExpression {
  39     long value;
  40 
  41     /**
  42      * Constructor
  43      */
  44     public LongExpression(long where, long value) {
  45         super(LONGVAL, where, Type.tLong);
  46         this.value = value;
  47     }
  48 
  49     /**
  50      * Get the value
  51      */
  52     public Object getValue() {
  53         return new Long(value);
  54     }
  55 
  56     /**
  57      * Check if the expression is equal to a value
  58      */
  59     public boolean equals(int i) {
  60         return value == i;
  61     }
  62 
  63     /**
  64      * Check if the expression is equal to its default static value
  65      */
  66     public boolean equalsDefault() {
  67         return value == 0;
  68     }
  69 
  70     /**
  71      * Code
  72      */
  73     public void codeValue(Environment env, Context ctx, Assembler asm) {
  74         asm.add(where, opc_ldc2_w, new Long(value));
  75     }
  76 
  77     /**
  78      * Print
  79      */
  80     public void print(PrintStream out) {
  81         out.print(value + "L");
  82     }
  83 }