| /* |
| * Copyright (c) 2010, 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. |
| * |
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| */ |
| |
| package jdk.nashorn.internal.ir; |
| |
| /** |
| * Interface implemented by all nodes that have flags in |
| * a lexical context. This is needed as we sometimes have to save |
| * the setting of flags in the lexical context until a block |
| * is completely finished and its final version (after multiple |
| * copy on writes) is placed in the lexical context |
| * |
| * @param <T> lexical context node that can have flags set during code generation |
| */ |
| public interface Flags<T extends LexicalContextNode> { |
| |
| /** |
| * Get all flags of a LexicalContextNode |
| * @return flags |
| */ |
| public int getFlags(); |
| |
| /** |
| * Check if a flag is set in a lexical context node |
| * @param flag flag to check |
| * @return flags |
| */ |
| public boolean getFlag(int flag); |
| |
| /** |
| * Clear a flag of a LexicalContextNode |
| * @param lc lexical context |
| * @param flag flag to clear |
| * @return the new LexicalContext node if flags were changed, same otherwise |
| */ |
| public T clearFlag(final LexicalContext lc, int flag); |
| |
| /** |
| * Set a flag of a LexicalContextNode |
| * @param lc lexical context |
| * @param flag flag to set |
| * @return the new LexicalContext node if flags were changed, same otherwise |
| */ |
| public T setFlag(final LexicalContext lc, int flag); |
| |
| /** |
| * Set all flags of a LexicalContextNode, overwriting previous flags |
| * @param lc lexical context |
| * @param flags new flags value |
| * @return the new LexicalContext node if flags were changed, same otherwise |
| */ |
| public T setFlags(final LexicalContext lc, int flags); |
| } |