| /* |
| * |
| * 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.flex.compiler.common; |
| |
| import java.util.ArrayList; |
| |
| import org.apache.flex.compiler.internal.tree.as.ModifierNode; |
| |
| /** |
| * Map for holding a set of modifiers |
| */ |
| public class ModifiersSet |
| { |
| public ModifiersSet() |
| { |
| } |
| |
| private short bits = 0; |
| |
| private int start = -1; |
| |
| /** |
| * Add another modifier keyword to the collection (and adjust the span |
| * accordingly) |
| * |
| * @param modifier token holding modifier keyword |
| */ |
| public void addModifier(ASModifier modifier) |
| { |
| bits |= modifier.getMaskValue(); |
| } |
| |
| /** |
| * Add another modifier keyword to the collection (and adjust the span |
| * accordingly) |
| * |
| * @param modifier token holding modifier keyword |
| */ |
| public void addModifier(ModifierNode modifier) |
| { |
| if (modifier.getModifier() != null) |
| { |
| bits |= modifier.getModifier().getMaskValue(); |
| if ((start == -1 || modifier.getAbsoluteStart() < start) && modifier.getAbsoluteStart() > 0) |
| start = modifier.getAbsoluteStart(); |
| } |
| |
| } |
| |
| public int getStart() |
| { |
| return start; |
| } |
| |
| public boolean hasModifiers() |
| { |
| return Integer.bitCount(bits) > 0; |
| } |
| |
| public ASModifier[] getAllModifiers() |
| { |
| ArrayList<ASModifier> retVal = new ArrayList<ASModifier>(ASModifier.MODIFIERS.length); |
| if (hasModifiers()) |
| { |
| for (int i = 0; i < ASModifier.MODIFIERS.length; i++) |
| { |
| if ((bits & ASModifier.MODIFIERS[i].getMaskValue()) == ASModifier.MODIFIERS[i].getMaskValue()) |
| { |
| retVal.add(ASModifier.MODIFIERS[i]); |
| } |
| } |
| } |
| return retVal.toArray(new ASModifier[0]); |
| } |
| |
| /** |
| * Is the given modifier in the set? |
| * |
| * @return true if the modifier is included in the set |
| */ |
| public boolean hasModifier(ASModifier modifier) |
| { |
| return (bits & modifier.getMaskValue()) == modifier.getMaskValue(); |
| } |
| |
| @Override |
| public boolean equals(Object obj) |
| { |
| if (!(obj instanceof ModifiersSet)) |
| return false; |
| |
| return bits == ((ModifiersSet)obj).bits && start == ((ModifiersSet)obj).start; |
| } |
| |
| /** |
| * For debugging only. |
| */ |
| @Override |
| public String toString() |
| { |
| StringBuffer sb = new StringBuffer(); |
| for (ASModifier modifier : getAllModifiers()) |
| { |
| sb.append(modifier.toString()); |
| sb.append(' '); |
| } |
| return sb.toString(); |
| } |
| } |