/*
* Copyright (c) 1999, 2012, 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
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*/
package com.sun.tools.javac.parser;
import java.util.HashMap;
import java.util.Map;
import com.sun.tools.javac.parser.Tokens.Comment;
import com.sun.tools.javac.tree.DCTree.DCDocComment;
import com.sun.tools.javac.tree.DocCommentTable;
import com.sun.tools.javac.tree.JCTree;
import com.sun.tools.javac.util.DiagnosticSource;
/**
*
* <p><b>This is NOT part of any supported API.
* If you write code that depends on this, you do so at your own risk.
* This code and its internal interfaces are subject to change or
* deletion without notice.</b>
*/
public class LazyDocCommentTable implements DocCommentTable {
private static class Entry {
final Comment comment;
DCDocComment tree;
Entry(Comment c) {
comment = c;
}
}
ParserFactory fac;
DiagnosticSource diagSource;
Map<JCTree, Entry> table;
LazyDocCommentTable(ParserFactory fac) {
this.fac = fac;
diagSource = fac.log.currentSource();
table = new HashMap<JCTree, Entry>();
}
public boolean hasComment(JCTree tree) {
return table.containsKey(tree);
}
public Comment getComment(JCTree tree) {
Entry e = table.get(tree);
return (e == null) ? null : e.comment;
}
public String getCommentText(JCTree tree) {
Comment c = getComment(tree);
return (c == null) ? null : c.getText();
}
public DCDocComment getCommentTree(JCTree tree) {
Entry e = table.get(tree);
if (e == null)
return null;
if (e.tree == null)
e.tree = new DocCommentParser(fac, diagSource, e.comment).parse();
return e.tree;
}
public void putComment(JCTree tree, Comment c) {
table.put(tree, new Entry(c));
}
}