src/share/classes/com/sun/source/tree/LineMap.java

Fri, 26 Jun 2009 19:12:41 -0700

author
jjg
date
Fri, 26 Jun 2009 19:12:41 -0700
changeset 309
664edca41e34
parent 1
9a66ca7c79fa
child 554
9d9f26857129
permissions
-rw-r--r--

6855544: add missing files
Reviewed-by: jjg, mcimadamore, darcy
Contributed-by: mernst@cs.washington.edu, mali@csail.mit.edu, mpapi@csail.mit.edu

     1 /*
     2  * Copyright 2006 Sun Microsystems, Inc.  All Rights Reserved.
     3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
     4  *
     5  * This code is free software; you can redistribute it and/or modify it
     6  * under the terms of the GNU General Public License version 2 only, as
     7  * published by the Free Software Foundation.  Sun designates this
     8  * particular file as subject to the "Classpath" exception as provided
     9  * by Sun in the LICENSE file that accompanied this code.
    10  *
    11  * This code is distributed in the hope that it will be useful, but WITHOUT
    12  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
    13  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
    14  * version 2 for more details (a copy is included in the LICENSE file that
    15  * accompanied this code).
    16  *
    17  * You should have received a copy of the GNU General Public License version
    18  * 2 along with this work; if not, write to the Free Software Foundation,
    19  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
    20  *
    21  * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
    22  * CA 95054 USA or visit www.sun.com if you need additional information or
    23  * have any questions.
    24  */
    26 package com.sun.source.tree;
    28 /**
    29  * Provides methods to convert between character positions and line numbers
    30  * for a compilation unit.
    31  *
    32  * @since 1.6
    33  */
    34 public interface LineMap {
    35     /**
    36      * Find the start position of a line.
    37      *
    38      * @param line line number (beginning at 1)
    39      * @return     position of first character in line
    40      * @throws  IndexOutOfBoundsException
    41      *           if <tt>lineNumber < 1</tt>
    42      *           if <tt>lineNumber > no. of lines</tt>
    43      */
    44     long getStartPosition(long line);
    46     /**
    47      * Find the position corresponding to a (line,column).
    48      *
    49      * @param   line    line number (beginning at 1)
    50      * @param   column  tab-expanded column number (beginning 1)
    51      *
    52      * @return  position of character
    53      * @throws  IndexOutOfBoundsException
    54      *           if {@code line < 1}
    55      *           if {@code line > no. of lines}
    56      */
    57     long getPosition(long line, long column);
    59     /**
    60      * Find the line containing a position; a line termination
    61      * character is on the line it terminates.
    62      *
    63      * @param   pos  character offset of the position
    64      * @return the line number of pos (first line is 1)
    65      */
    66     long getLineNumber(long pos);
    68     /**
    69      * Find the column for a character position.
    70      * Tab characters preceding the position on the same line
    71      * will be expanded when calculating the column number.
    72      *
    73      * @param  pos   character offset of the position
    74      * @return       the tab-expanded column number of pos (first column is 1)
    75      */
    76     long getColumnNumber(long pos);
    78 }

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