001// Copyright 2004, 2005 The Apache Software Foundation
002//
003// Licensed under the Apache License, Version 2.0 (the "License");
004// you may not use this file except in compliance with the License.
005// You may obtain a copy of the License at
006//
007//     http://www.apache.org/licenses/LICENSE-2.0
008//
009// Unless required by applicable law or agreed to in writing, software
010// distributed under the License is distributed on an "AS IS" BASIS,
011// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
012// See the License for the specific language governing permissions and
013// limitations under the License.
014
015package org.apache.hivemind;
016
017
018/**
019 * Represents a location within a resource; this is universally
020 * used to support error reporting, by relating run-time objects
021 * back to specific locations wtihin specific resources.
022 * 
023 * @author Howard M. Lewis Ship, glongman@intelligentworks.com
024 */
025public interface Location
026{
027        /**
028         * The resource containing the location.
029         */
030    public Resource getResource();
031    
032    /**
033     * The line within the resource containing the location,
034     * or -1 if the line number is not known.
035     * 
036     */
037    public int getLineNumber();
038    
039    /**
040     * The column number, or -1 if not known.
041     */
042    public int getColumnNumber();
043}