| /* |
| * |
| * Licensed to the Apache Software Foundation (ASF) under one or more |
| * contributor license agreements. See the NOTICE file distributed with |
| * this work for additional information regarding copyright ownership. |
| * The ASF licenses this file to You under the Apache License, Version 2.0 |
| * (the "License"); you may not use this file except in compliance with |
| * the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| * |
| */ |
| |
| package org.apache.royale.compiler.common; |
| |
| import java.util.HashMap; |
| import java.util.HashSet; |
| import java.util.Iterator; |
| import java.util.LinkedHashSet; |
| import java.util.Set; |
| |
| /** |
| * A PrefixMap contains a collection of prefix to namespace mappings found in |
| * MXML documents. This object is <b>immutable</b>. For a mutable version, look |
| * at {@link MutablePrefixMap} |
| */ |
| public class PrefixMap implements Cloneable |
| { |
| public PrefixMap() |
| { |
| super(); |
| } |
| |
| public PrefixMap(PrefixMap map) |
| { |
| namespaceToPrefixMap = new HashMap<String, Set<String>>(map.namespaceToPrefixMap); |
| prefixes = new HashSet<String>(map.prefixes); |
| } |
| |
| protected HashMap<String, Set<String>> namespaceToPrefixMap = new HashMap<String, Set<String>>(); |
| |
| protected HashSet<String> prefixes = new HashSet<String>(); |
| |
| @Override |
| public PrefixMap clone() |
| { |
| PrefixMap result = new PrefixMap(); |
| |
| result.namespaceToPrefixMap = new HashMap<String, Set<String>>(); |
| |
| // copy values here as there is an internal set involved here |
| Iterator<String> it = namespaceToPrefixMap.keySet().iterator(); |
| while (it.hasNext()) |
| { |
| String next = it.next(); |
| Set<String> set = namespaceToPrefixMap.get(next); |
| if (set != null) |
| { |
| Set<String> prefixSet = new LinkedHashSet<String>(); |
| Iterator<String> setIt = set.iterator(); |
| while (setIt.hasNext()) |
| { |
| String prefix = setIt.next(); |
| prefixSet.add(prefix); |
| } |
| result.namespaceToPrefixMap.put(next, prefixSet); |
| } |
| } |
| |
| result.prefixes = new HashSet<String>(prefixes); |
| return result; |
| } |
| |
| /** |
| * Creates a mutable copy of this PrefixMap, based on its values |
| * |
| * @return a mutable version of this prefix map |
| */ |
| public MutablePrefixMap toMutable() |
| { |
| return new MutablePrefixMap(this.clone()); |
| } |
| |
| /** |
| * Returns the namespace for the given prefix. The first prefix found in the |
| * map will win |
| * |
| * @param prefix the prefix to find out namespace for |
| * @return a namespace URI or null |
| */ |
| public String getNamespaceForPrefix(String prefix) |
| { |
| Iterator<String> it = namespaceToPrefixMap.keySet().iterator(); |
| while (it.hasNext()) |
| { |
| String next = it.next(); |
| Set<String> set = namespaceToPrefixMap.get(next); |
| if (set != null) |
| { |
| if (set.contains(prefix)) |
| { |
| return next; |
| } |
| } |
| } |
| return null; |
| } |
| |
| /** |
| * Returns true if the given prefix exists somewhere in this map |
| * |
| * @param prefix A namespace prefix string such as <code>"fx"</code>. |
| */ |
| public boolean containsPrefix(String prefix) |
| { |
| return prefixes.contains(prefix); |
| } |
| |
| /** |
| * Checks whether the map contains a reference to the given namespace. |
| * |
| * @param namespace URI of a namespace. |
| */ |
| public boolean containsNamespace(String namespace) |
| { |
| return namespaceToPrefixMap.containsKey(namespace); |
| } |
| |
| /** |
| * Returns all the prefixes known to this map. |
| */ |
| public String[] getAllPrefixes() |
| { |
| return prefixes.toArray(new String[0]); |
| } |
| |
| /** |
| * Returns all the namespace URIs known to this map |
| */ |
| public String[] getAllNamespaces() |
| { |
| return namespaceToPrefixMap.keySet().toArray(new String[0]); |
| } |
| |
| /** |
| * Returns the prefix that is used to reference the given namespace URI. |
| * |
| * @param uri A namespace URI such as <code>"http://ns.adobe.com/mxml/2009"</code>. |
| */ |
| public String[] getPrefixesForNamespace(String uri) |
| { |
| Set<String> set = namespaceToPrefixMap.get(uri); |
| if (set != null) |
| return set.toArray(new String[0]); |
| return new String[0]; |
| } |
| |
| @Override |
| public boolean equals(Object obj) |
| { |
| if (obj instanceof PrefixMap) |
| { |
| PrefixMap right = (PrefixMap)obj; |
| if (right.namespaceToPrefixMap.size() != namespaceToPrefixMap.size()) |
| { |
| return false; |
| } |
| if (right.prefixes.size() != prefixes.size()) |
| { |
| return false; |
| } |
| |
| Iterator<String> prefixItr = right.prefixes.iterator(); |
| while (prefixItr.hasNext()) |
| { |
| if (!prefixes.contains(prefixItr.next())) |
| { |
| return false; |
| } |
| } |
| |
| Iterator<String> nsItr = right.namespaceToPrefixMap.keySet().iterator(); |
| while (nsItr.hasNext()) |
| { |
| String next = nsItr.next(); |
| Set<String> set = namespaceToPrefixMap.get(next); |
| Set<String> rSet = right.namespaceToPrefixMap.get(next); |
| if (set == null) |
| { |
| return false; |
| } |
| Iterator<String> pItr = rSet.iterator(); |
| while (pItr.hasNext()) |
| { |
| if (!set.contains(pItr.next())) |
| { |
| return false; |
| } |
| } |
| } |
| return true; |
| } |
| |
| return super.equals(obj); |
| } |
| } |