The SourcePositions.java Java example source code
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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* published by the Free Software Foundation. Oracle designates this
* particular file as subject to the "Classpath" exception as provided
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*
* 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).
*
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package com.sun.source.util;
import com.sun.source.tree.*;
/**
* Provides methods to obtain the position of a Tree within a CompilationUnit.
* A position is defined as a simple character offset from the start of a
* CompilationUnit where the first character is at offset 0.
*
* @author Peter von der Ahé
* @since 1.6
*/
@jdk.Exported
public interface SourcePositions {
/**
* Gets the starting position of tree within file. If tree is not found within
* file, or if the starting position is not available,
* return {@link javax.tools.Diagnostic#NOPOS}.
* 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:
*
* <p>
* {@code tree.getStartPosition() <= subtree.getStartPosition()} or
* {@code tree.getEndPosition() == NOPOS} or <br>
* {@code subtree.getEndPosition() == NOPOS}
* </p>
*
* In addition, the following must hold:
*
* <p>
* {@code tree.getStartPosition() <= tree.getEndPosition()} or
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