sourcenamereferencetypespec.java

来自「jpda例子文件」· Java 代码 · 共 92 行

/*
 * @(#)SourceNameReferenceTypeSpec.java	1.7 03/01/23
 *
 * Copyright 2003 Sun Microsystems, Inc. All rights reserved.
 * SUN PROPRIETARY/CONFIDENTIAL. Use is subject to license terms.
 */
/*
 * Copyright (c) 1997-1999 by Sun Microsystems, Inc. All Rights Reserved.
 * 
 * Sun grants you ("Licensee") a non-exclusive, royalty free, license to use,
 * modify and redistribute this software in source and binary code form,
 * provided that i) this copyright notice and license appear on all copies of
 * the software; and ii) Licensee does not utilize the software in a manner
 * which is disparaging to Sun.
 * 
 * This software is provided "AS IS," without a warranty of any kind. ALL
 * EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND WARRANTIES, INCLUDING ANY
 * IMPLIED WARRANTY OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE OR
 * NON-INFRINGEMENT, ARE HEREBY EXCLUDED. SUN AND ITS LICENSORS SHALL NOT BE
 * LIABLE FOR ANY DAMAGES SUFFERED BY LICENSEE AS A RESULT OF USING, MODIFYING
 * OR DISTRIBUTING THE SOFTWARE OR ITS DERIVATIVES. IN NO EVENT WILL SUN OR ITS
 * LICENSORS BE LIABLE FOR ANY LOST REVENUE, PROFIT OR DATA, OR FOR DIRECT,
 * INDIRECT, SPECIAL, CONSEQUENTIAL, INCIDENTAL OR PUNITIVE DAMAGES, HOWEVER
 * CAUSED AND REGARDLESS OF THE THEORY OF LIABILITY, ARISING OUT OF THE USE OF
 * OR INABILITY TO USE SOFTWARE, EVEN IF SUN HAS BEEN ADVISED OF THE
 * POSSIBILITY OF SUCH DAMAGES.
 * 
 * This software is not designed or intended for use in on-line control of
 * aircraft, air traffic, aircraft navigation or aircraft communications; or in
 * the design, construction, operation or maintenance of any nuclear
 * facility. Licensee represents and warrants that it will not use or
 * redistribute the Software for such purposes.
 */

package com.sun.tools.example.debug.bdi;

import com.sun.jdi.*;

class SourceNameReferenceTypeSpec implements ReferenceTypeSpec {
    final String sourceName;
    final int linenumber;

    SourceNameReferenceTypeSpec(String sourceName, int linenumber) {
        this.sourceName = sourceName;
        this.linenumber = linenumber;
    }

    /**
     * Does the specified ReferenceType match this spec.
     */
    public boolean matches(ReferenceType refType) {
        try {
            if (refType.sourceName().equals(sourceName)) {
                try {
                    refType.locationsOfLine(linenumber);
                    // if we don't throw an exception then it was found
                    return true;
                } catch(AbsentInformationException exc) {
                } catch(ObjectCollectedException  exc) {
                } catch(InvalidLineNumberException  exc) {
//          } catch(ClassNotPreparedException  exc) {
//               -- should not happen, so don't catch this ---
                }
            }
        } catch(AbsentInformationException exc) {
            // for sourceName(), fall through
        }
        return false;
    }

    public int hashCode() {
        return sourceName.hashCode() + linenumber;
    }

    public boolean equals(Object obj) {
        if (obj instanceof SourceNameReferenceTypeSpec) {
            SourceNameReferenceTypeSpec spec = (SourceNameReferenceTypeSpec)obj;

            return sourceName.equals(spec.sourceName) && 
                              (linenumber == spec.linenumber);
        } else {
            return false;
        }
    }

    public String toString() {
        return sourceName + "@" + linenumber;
    }
}