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tools » sun » tools » tree » DoubleExpression.java
/*
 * Copyright 1994-2003 Sun Microsystems, Inc.  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.  Sun designates this
 * particular file as subject to the "Classpath" exception as provided
 * by Sun 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
 * CA 95054 USA or visit www.sun.com if you need additional information or
 * have any questions.
 */

package sun.tools.tree;

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

/**
 * 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 DoubleExpression extends ConstantExpression {
    double value;
    
    /**
     * Constructor
     */
    public DoubleExpression(long where, double value) {
  super(DOUBLEVAL, where, Type.tDouble);
  this.value = value;
    }

    /**
     * Get the value
     */
    public Object getValue() {
  return new Double(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() {
        // don't allow -0.0
        return (Double.doubleToLongBits(value) == 0);
    }

    /**
     * Code
     */
    public void codeValue(Environment env, Context ctx, Assembler asm) {
  asm.add(where, opc_ldc2_w, new Double(value));
    }

    /**
     * Print
     */
    public void print(PrintStream out) {
  out.print(value + "D");
    }
}
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