/*
* Copyright 2001-2005 Sun Microsystems, Inc. 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. Sun designates this
* particular file as subject to the "Classpath" exception as provided
* by Sun 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
* CA 95054 USA or visit www.sun.com if you need additional information or
* have any questions.
*/
package com.sun.tools.javadoc;
import com.sun.javadoc.SourcePosition;
import com.sun.tools.javac.util.Position;
import java.io.File;
/**
* A source position: filename, line number, and column number.
*
* @since J2SE1.4
* @author Neal M Gafter
* @author Michael Van De Vanter (position representation changed to char offsets)
*/
class SourcePositionImpl implements SourcePosition {
String filename;
int position;
Position.LineMap lineMap;
/** The source file. Returns null if no file information is
* available. */
public File file() {
return (filename == null) ? null : new File(filename);
}
/** The line in the source file. The first line is numbered 1;
* 0 means no line number information is available. */
public int line() {
if (lineMap == null) {
return 0;
} else {
return lineMap.getLineNumber(position);
}
}
/** The column in the source file. The first column is
* numbered 1; 0 means no column information is available.
* Columns count characters in the input stream; a tab
* advances the column number to the next 8-column tab stop.
*/
public int column() {
if (lineMap == null) {
return 0;
}else {
return lineMap.getColumnNumber(position);
}
}
private SourcePositionImpl(String file, int position,
Position.LineMap lineMap) {
super();
this.filename = file;
this.position = position;
this.lineMap = lineMap;
}
public static SourcePosition make(String file, int pos,
Position.LineMap lineMap) {
if (file == null) return null;
return new SourcePositionImpl(file, pos, lineMap);
}
public String toString() {
if (position == Position.NOPOS)
return filename;
else
return filename + ":" + line();
}
}