/*

 * 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

 * or visit www.oracle.com if you need additional information or have any

 * questions.

 */

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));

    }

}