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1 /* |
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2 * Copyright (c) 2013, Oracle and/or its affiliates. All rights reserved. |
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3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
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4 * |
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5 * This code is free software; you can redistribute it and/or modify it |
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6 * under the terms of the GNU General Public License version 2 only, as |
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7 * published by the Free Software Foundation. Oracle designates this |
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8 * particular file as subject to the "Classpath" exception as provided |
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9 * by Oracle in the LICENSE file that accompanied this code. |
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10 * |
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11 * This code is distributed in the hope that it will be useful, but WITHOUT |
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12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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14 * version 2 for more details (a copy is included in the LICENSE file that |
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15 * accompanied this code). |
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16 * |
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17 * You should have received a copy of the GNU General Public License version |
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18 * 2 along with this work; if not, write to the Free Software Foundation, |
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19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
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20 * |
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21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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22 * or visit www.oracle.com if you need additional information or have any |
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23 * questions. |
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24 */ |
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25 |
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26 package com.sun.source.util; |
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27 |
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28 import com.sun.source.doctree.DocCommentTree; |
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29 import com.sun.source.doctree.DocTree; |
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30 import com.sun.source.tree.CompilationUnitTree; |
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31 |
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32 /** |
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33 * Provides methods to obtain the position of a DocTree within a javadoc comment. |
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34 * A position is defined as a simple character offset from the start of a |
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35 * CompilationUnit where the first character is at offset 0. |
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36 * |
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37 * @since 1.8 |
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38 */ |
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39 @jdk.Exported |
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40 public interface DocSourcePositions extends SourcePositions { |
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41 |
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42 /** |
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43 * Gets the starting position of the tree within the comment within the file. If tree is not found within |
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44 * file, or if the starting position is not available, |
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45 * return {@link javax.tools.Diagnostic#NOPOS}. |
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46 * The given tree should be under the given comment tree, and the given documentation |
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47 * comment tree should be returned from a {@link DocTrees#getDocCommentTree(com.sun.source.util.TreePath) } |
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48 * for a tree under the given file. |
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49 * The returned position must be at the start of the yield of this tree, that |
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50 * is for any sub-tree of this tree, the following must hold: |
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51 * |
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52 * <p> |
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53 * {@code tree.getStartPosition() <= subtree.getStartPosition()} or <br> |
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54 * {@code tree.getStartPosition() == NOPOS} or <br> |
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55 * {@code subtree.getStartPosition() == NOPOS} |
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56 * </p> |
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57 * |
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58 * @param file CompilationUnit in which to find tree. |
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59 * @param comment the comment tree that encloses the tree for which the |
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60 * position is being sought |
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61 * @param tree tree for which a position is sought. |
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62 * @return the start position of tree. |
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63 */ |
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64 long getStartPosition(CompilationUnitTree file, DocCommentTree comment, DocTree tree); |
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65 |
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66 /** |
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67 * Gets the ending position of the tree within the comment within the file. If tree is not found within |
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68 * file, or if the ending position is not available, |
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69 * return {@link javax.tools.Diagnostic#NOPOS}. |
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70 * The given tree should be under the given comment tree, and the given documentation |
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71 * comment tree should be returned from a {@link DocTrees#getDocCommentTree(com.sun.source.util.TreePath) } |
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72 * for a tree under the given file. |
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73 * The returned position must be at the end of the yield of this tree, |
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74 * that is for any sub-tree of this tree, the following must hold: |
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75 * |
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76 * <p> |
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77 * {@code tree.getEndPosition() >= subtree.getEndPosition()} or <br> |
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78 * {@code tree.getEndPosition() == NOPOS} or <br> |
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79 * {@code subtree.getEndPosition() == NOPOS} |
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80 * </p> |
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81 * |
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82 * In addition, the following must hold: |
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83 * |
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84 * <p> |
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85 * {@code tree.getStartPosition() <= tree.getEndPosition()} or <br> |
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86 * {@code tree.getStartPosition() == NOPOS} or <br> |
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87 * {@code tree.getEndPosition() == NOPOS} |
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88 * </p> |
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89 * |
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90 * @param file CompilationUnit in which to find tree. |
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91 * @param comment the comment tree that encloses the tree for which the |
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92 * position is being sought |
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93 * @param tree tree for which a position is sought. |
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94 * @return the start position of tree. |
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95 */ |
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96 long getEndPosition(CompilationUnitTree file, DocCommentTree comment, DocTree tree); |
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97 |
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98 } |