| /* |
| * Copyright (c) 1999, 2008, 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. |
| */ |
| |
| /* |
| * This source code is provided to illustrate the usage of a given feature |
| * or technique and has been deliberately simplified. Additional steps |
| * required for a production-quality application, such as security checks, |
| * input validation and proper error handling, might not be present in |
| * this sample code. |
| */ |
| |
| |
| package com.sun.tools.example.debug.bdi; |
| |
| import com.sun.jdi.*; |
| import java.util.List; |
| |
| public class LineBreakpointSpec extends BreakpointSpec { |
| int lineNumber; |
| |
| LineBreakpointSpec(EventRequestSpecList specs, |
| ReferenceTypeSpec refSpec, int lineNumber) { |
| super(specs, refSpec); |
| this.lineNumber = lineNumber; |
| } |
| |
| /** |
| * The 'refType' is known to match. |
| */ |
| @Override |
| void resolve(ReferenceType refType) throws InvalidTypeException, |
| LineNotFoundException { |
| if (!(refType instanceof ClassType)) { |
| throw new InvalidTypeException(); |
| } |
| Location location = location((ClassType)refType); |
| setRequest(refType.virtualMachine().eventRequestManager() |
| .createBreakpointRequest(location)); |
| } |
| |
| private Location location(ClassType clazz) throws |
| LineNotFoundException { |
| Location location = null; |
| try { |
| List<Location> locs = clazz.locationsOfLine(lineNumber()); |
| if (locs.size() == 0) { |
| throw new LineNotFoundException(); |
| } |
| // TODO handle multiple locations |
| location = locs.get(0); |
| if (location.method() == null) { |
| throw new LineNotFoundException(); |
| } |
| } catch (AbsentInformationException e) { |
| /* |
| * TO DO: throw something more specific, or allow |
| * AbsentInfo exception to pass through. |
| */ |
| throw new LineNotFoundException(); |
| } |
| return location; |
| } |
| |
| public int lineNumber() { |
| return lineNumber; |
| } |
| |
| @Override |
| public int hashCode() { |
| return refSpec.hashCode() + lineNumber; |
| } |
| |
| @Override |
| public boolean equals(Object obj) { |
| if (obj instanceof LineBreakpointSpec) { |
| LineBreakpointSpec breakpoint = (LineBreakpointSpec)obj; |
| |
| return refSpec.equals(breakpoint.refSpec) && |
| (lineNumber == breakpoint.lineNumber); |
| } else { |
| return false; |
| } |
| } |
| |
| @Override |
| public String errorMessageFor(Exception e) { |
| if (e instanceof LineNotFoundException) { |
| return ("No code at line " + lineNumber() + " in " + refSpec); |
| } else if (e instanceof InvalidTypeException) { |
| return ("Breakpoints can be located only in classes. " + |
| refSpec + " is an interface or array"); |
| } else { |
| return super.errorMessageFor( e); |
| } |
| } |
| |
| @Override |
| public String toString() { |
| StringBuffer buffer = new StringBuffer("breakpoint "); |
| buffer.append(refSpec.toString()); |
| buffer.append(':'); |
| buffer.append(lineNumber); |
| buffer.append(" ("); |
| buffer.append(getStatusString()); |
| buffer.append(')'); |
| return buffer.toString(); |
| } |
| } |