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/*
* Copyright (c) 2013, 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.
*/
package com.sun.source.util;
import com.sun.source.doctree.DocCommentTree;
import com.sun.source.doctree.DocTree;
import com.sun.source.tree.CompilationUnitTree;
/**
* Provides methods to obtain the position of a DocTree within a javadoc comment.
* A position is defined as a simple character offset from the start of a
* CompilationUnit where the first character is at offset 0.
*
* @since 1.8
*/
@jdk.Exported
public interface DocSourcePositions extends SourcePositions {
/**
* Gets the starting position of the tree within the comment within the file. If tree is not found within
* file, or if the starting position is not available,
* return {@link javax.tools.Diagnostic#NOPOS}.
* The given tree should be under the given comment tree, and the given documentation
* comment tree should be returned from a {@link DocTrees#getDocCommentTree(com.sun.source.util.TreePath) }
* for a tree under the given file.
* The returned position must be at the start of the yield of this tree, that
* is for any sub-tree of this tree, the following must hold:
*
*
* {@code tree.getStartPosition() <= subtree.getStartPosition()} or
* {@code tree.getStartPosition() == NOPOS} or
* {@code subtree.getStartPosition() == NOPOS}
*
*
* @param file CompilationUnit in which to find tree.
* @param comment the comment tree that encloses the tree for which the
* position is being sought
* @param tree tree for which a position is sought.
* @return the start position of tree.
*/
long getStartPosition(CompilationUnitTree file, DocCommentTree comment, DocTree tree);
/**
* Gets the ending position of the tree within the comment within the file. If tree is not found within
* file, or if the ending position is not available,
* return {@link javax.tools.Diagnostic#NOPOS}.
* The given tree should be under the given comment tree, and the given documentation
* comment tree should be returned from a {@link DocTrees#getDocCommentTree(com.sun.source.util.TreePath) }
* for a tree under the given file.
* The returned position must be at the end of the yield of this tree,
* that is for any sub-tree of this tree, the following must hold:
*
*
* {@code tree.getEndPosition() >= subtree.getEndPosition()} or
* {@code tree.getEndPosition() == NOPOS} or
* {@code subtree.getEndPosition() == NOPOS}
*
*
* In addition, the following must hold:
*
*
* {@code tree.getStartPosition() <= tree.getEndPosition()} or
* {@code tree.getStartPosition() == NOPOS} or
* {@code tree.getEndPosition() == NOPOS}
*
*
* @param file CompilationUnit in which to find tree.
* @param comment the comment tree that encloses the tree for which the
* position is being sought
* @param tree tree for which a position is sought.
* @return the start position of tree.
*/
long getEndPosition(CompilationUnitTree file, DocCommentTree comment, DocTree tree);
}