| /* |
| * Copyright (c) 1997, 2021 Oracle and/or its affiliates. All rights reserved. |
| * |
| * This program and the accompanying materials are made available under the |
| * terms of the Eclipse Distribution License v. 1.0, which is available at |
| * http://www.eclipse.org/org/documents/edl-v10.php. |
| * |
| * SPDX-License-Identifier: BSD-3-Clause |
| */ |
| |
| package com.sun.tools.xjc.reader.relaxng; |
| |
| import java.util.HashSet; |
| import java.util.Set; |
| |
| import com.sun.tools.rngom.digested.DDefine; |
| import com.sun.tools.rngom.digested.DGrammarPattern; |
| import com.sun.tools.rngom.digested.DPatternWalker; |
| import com.sun.tools.rngom.digested.DRefPattern; |
| |
| /** |
| * Recursively find all {@link DDefine}s in the grammar. |
| * |
| * @author Kohsuke Kawaguchi |
| */ |
| final class DefineFinder extends DPatternWalker { |
| |
| public final Set<DDefine> defs = new HashSet<DDefine>(); |
| |
| public Void onGrammar(DGrammarPattern p) { |
| for( DDefine def : p ) { |
| defs.add(def); |
| def.getPattern().accept(this); |
| } |
| |
| return p.getStart().accept(this); |
| } |
| |
| /** |
| * We visit all {@link DDefine}s from {@link DGrammarPattern}, |
| * so no point in resolving refs. |
| */ |
| public Void onRef(DRefPattern p) { |
| return null; |
| } |
| } |