jdk8-mips64-public/langtools: src/share/classes/com/sun/tools/javac/parser/LazyDocCommentTable.java@af8417e590f4

     1 /*

     2  * Copyright (c) 1999, 2012, Oracle and/or its affiliates. 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.  Oracle designates this

     8  * particular file as subject to the "Classpath" exception as provided

     9  * by Oracle 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 Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

    22  * or visit www.oracle.com if you need additional information or have any

    23  * questions.

    24  */

    26 package com.sun.tools.javac.parser;

    28 import java.util.HashMap;

    29 import java.util.Map;

    31 import com.sun.tools.javac.parser.Tokens.Comment;

    32 import com.sun.tools.javac.tree.DCTree.DCDocComment;

    33 import com.sun.tools.javac.tree.DocCommentTable;

    34 import com.sun.tools.javac.tree.JCTree;

    35 import com.sun.tools.javac.util.DiagnosticSource;

    38 /**

    39  *

    40  *  <p><b>This is NOT part of any supported API.

    41  *  If you write code that depends on this, you do so at your own risk.

    42  *  This code and its internal interfaces are subject to change or

    43  *  deletion without notice.</b>

    44  */

    45 public class LazyDocCommentTable implements DocCommentTable {

    46     private static class Entry {

    47         final Comment comment;

    48         DCDocComment tree;

    50         Entry(Comment c) {

    51             comment = c;

    52         }

    53     }

    55     ParserFactory fac;

    56     DiagnosticSource diagSource;

    57     Map<JCTree, Entry> table;

    59     LazyDocCommentTable(ParserFactory fac) {

    60         this.fac = fac;

    61         diagSource = fac.log.currentSource();

    62         table = new HashMap<JCTree, Entry>();

    63     }

    65     public boolean hasComment(JCTree tree) {

    66         return table.containsKey(tree);

    67     }

    69     public Comment getComment(JCTree tree) {

    70         Entry e = table.get(tree);

    71         return (e == null) ? null : e.comment;

    72     }

    74     public String getCommentText(JCTree tree) {

    75         Comment c = getComment(tree);

    76         return (c == null) ? null : c.getText();

    77     }

    79     public DCDocComment getCommentTree(JCTree tree) {

    80         Entry e = table.get(tree);

    81         if (e == null)

    82             return null;

    83         if (e.tree == null)

    84             e.tree = new DocCommentParser(fac, diagSource, e.comment).parse();

    85         return e.tree;

    86     }

    88     public void putComment(JCTree tree, Comment c) {

    89         table.put(tree, new Entry(c));

    90     }

    92 }

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