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public class

IntegerExpression

extends Expression
/*
 * Copyright (c) 1994, 2003, Oracle and/or its affiliates. All rights reserved.
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 *
 * This code is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License version 2 only, as
 * published by the Free Software Foundation.  Oracle designates this
 * particular file as subject to the "Classpath" exception as provided
 * by Oracle in the LICENSE file that accompanied this code.
 *
 * This code is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
 * version 2 for more details (a copy is included in the LICENSE file that
 * accompanied this code).
 *
 * You should have received a copy of the GNU General Public License version
 * 2 along with this work; if not, write to the Free Software Foundation,
 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
 *
 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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 */


package sun.tools.tree;

import sun.tools.java.*;
import sun.tools.asm.Assembler;

/**
 * WARNING: The contents of this source file are not part of any
 * supported API.  Code that depends on them does so at its own risk:
 * they are subject to change or removal without notice.
 */

public
class IntegerExpression extends ConstantExpression {
   
int value;

   
/**
     * Constructor
     */

   
IntegerExpression(int op, long where, Type type, int value) {
       
super(op, where, type);
       
this.value = value;
   
}

   
/**
     * See if this number fits in the given type.
     */

   
public boolean fitsType(Environment env, Context ctx, Type t) {
       
if (this.type.isType(TC_CHAR)) {
           
// A char constant is not really an int constant,
           
// so do not report that 'a' fits in a byte or short,
           
// even if its value is in fact 7-bit ascii.  See JLS 5.2.
           
return super.fitsType(env, ctx, t);
       
}
       
switch (t.getTypeCode()) {
         
case TC_BYTE:
           
return value == (byte)value;
         
case TC_SHORT:
           
return value == (short)value;
         
case TC_CHAR:
           
return value == (char)value;
       
}
       
return super.fitsType(env, ctx, t);
   
}

   
/**
     * Get the value
     */

   
public Object getValue() {
       
return new Integer(value);
   
}

   
/**
     * Check if the expression is equal to a value
     */

   
public boolean equals(int i) {
       
return value == i;
   
}

   
/**
     * Check if the expression is equal to its default static value
     */

   
public boolean equalsDefault() {
       
return value == 0;
   
}

   
/**
     * Code
     */

   
public void codeValue(Environment env, Context ctx, Assembler asm) {
       
asm.add(where, opc_ldc, new Integer(value));
   
}
}