Java example source code file (BasicCIntegerField.java)

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Java - Java tags/keywords

basiccintegerfield, basicfield, cintegertype, string, type, unalignedaddressexception, unmappedaddressexception, wrongtypeexception

The BasicCIntegerField.java Java example source code

/*
 * Copyright (c) 2000, 2001, 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.
 *
 * 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.jvm.hotspot.types.basic;

import sun.jvm.hotspot.debugger.*;
import sun.jvm.hotspot.types.*;

/** A specialization of BasicField adding typechecked getValue()
    routines returning ints. */

public class BasicCIntegerField extends BasicField implements CIntegerField {
  private CIntegerType intType;

  public BasicCIntegerField(BasicTypeDataBase db, Type containingType, String name, Type type,
                            boolean isStatic, long offset, Address staticFieldAddress) {
    super(db, containingType, name, type, isStatic, offset, staticFieldAddress);

    if (!(type instanceof CIntegerType)) {
      throw new WrongTypeException("Type of a BasicCIntegerField must be a CIntegerType");
    }

    intType = (CIntegerType) type;
  }

  public boolean isUnsigned() {
    return intType.isUnsigned();
  }

  /** The field must be nonstatic and of integer type, or a
      WrongTypeException will be thrown. */
  public long getValue(Address addr) throws UnmappedAddressException, UnalignedAddressException, WrongTypeException {
    return getCInteger(addr, intType);
  }

  /** The field must be static and of integer type, or a
      WrongTypeException will be thrown. */
  public long getValue() throws UnmappedAddressException, UnalignedAddressException, WrongTypeException {
    return getCInteger(intType);
  }
}