001    /*
002     * Copyright 2005 Sun Microsystems, Inc.  All Rights Reserved.
003     * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
004     *
005     * This code is free software; you can redistribute it and/or modify it
006     * under the terms of the GNU General Public License version 2 only, as
007     * published by the Free Software Foundation.  Sun designates this
008     * particular file as subject to the "Classpath" exception as provided
009     * by Sun in the LICENSE file that accompanied this code.
010     *
011     * This code is distributed in the hope that it will be useful, but WITHOUT
012     * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
013     * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
014     * version 2 for more details (a copy is included in the LICENSE file that
015     * accompanied this code).
016     *
017     * You should have received a copy of the GNU General Public License version
018     * 2 along with this work; if not, write to the Free Software Foundation,
019     * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
020     *
021     * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
022     * CA 95054 USA or visit www.sun.com if you need additional information or
023     * have any questions.
024     */
025    
026    package com.sun.tools.javac.model;
027    
028    import javax.tools.JavaFileObject;
029    import com.sun.tools.javac.util.Position;
030    
031    /**
032     * Implementation of model API SourcePosition based on javac internal state.
033     *
034     * <p><b>This is NOT part of any API supported by Sun Microsystems.
035     * If you write code that depends on this, you do so at your own
036     * risk.  This code and its internal interfaces are subject to change
037     * or deletion without notice.</b></p>
038     */
039    class JavacSourcePosition {
040    
041        final JavaFileObject sourcefile;
042        final int pos;
043        final Position.LineMap lineMap;
044    
045        JavacSourcePosition(JavaFileObject sourcefile,
046                            int pos,
047                            Position.LineMap lineMap) {
048            this.sourcefile = sourcefile;
049            this.pos = pos;
050            this.lineMap = (pos != Position.NOPOS) ? lineMap : null;
051        }
052    
053        public JavaFileObject getFile() {
054            return sourcefile;
055        }
056    
057        public int getOffset() {
058            return pos;     // makes use of fact that Position.NOPOS == -1
059        }
060    
061        public int getLine() {
062            return (lineMap != null) ? lineMap.getLineNumber(pos) : -1;
063        }
064    
065        public int getColumn() {
066            return (lineMap != null) ? lineMap.getColumnNumber(pos) : -1;
067        }
068    
069        public String toString() {
070            int line = getLine();
071            return (line > 0)
072                  ? sourcefile + ":" + line
073                  : sourcefile.toString();
074        }
075    }