| /* |
| * reserved comment block |
| * DO NOT REMOVE OR ALTER! |
| */ |
| /* |
| * 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 com.sun.org.apache.xerces.internal.impl.dtd.models; |
| |
| import com.sun.org.apache.xerces.internal.impl.dtd.XMLContentSpec; |
| |
| /** |
| * Content model Uni-Op node. |
| * |
| * @xerces.internal |
| * |
| */ |
| public class CMUniOp extends CMNode |
| { |
| // ------------------------------------------------------------------- |
| // Constructors |
| // ------------------------------------------------------------------- |
| public CMUniOp(int type, CMNode childNode) |
| { |
| super(type); |
| |
| // Insure that its one of the types we require |
| if ((type() != XMLContentSpec.CONTENTSPECNODE_ZERO_OR_ONE) |
| && (type() != XMLContentSpec.CONTENTSPECNODE_ZERO_OR_MORE) |
| && (type() != XMLContentSpec.CONTENTSPECNODE_ONE_OR_MORE)) |
| { |
| throw new RuntimeException("ImplementationMessages.VAL_UST"); |
| } |
| |
| // Store the node and init any data that needs it |
| fChild = childNode; |
| } |
| |
| |
| // ------------------------------------------------------------------- |
| // Package, final methods |
| // ------------------------------------------------------------------- |
| final CMNode getChild() |
| { |
| return fChild; |
| } |
| |
| |
| // ------------------------------------------------------------------- |
| // Package, inherited methods |
| // ------------------------------------------------------------------- |
| public boolean isNullable() |
| { |
| // |
| // For debugging purposes, make sure we got rid of all non '*' |
| // repetitions. Otherwise, '*' style nodes are always nullable. |
| // |
| if (type() == XMLContentSpec.CONTENTSPECNODE_ONE_OR_MORE) |
| return fChild.isNullable(); |
| else |
| return true; |
| } |
| |
| |
| // ------------------------------------------------------------------- |
| // Protected, inherited methods |
| // ------------------------------------------------------------------- |
| protected void calcFirstPos(CMStateSet toSet) |
| { |
| // Its just based on our child node's first pos |
| toSet.setTo(fChild.firstPos()); |
| } |
| |
| protected void calcLastPos(CMStateSet toSet) |
| { |
| // Its just based on our child node's last pos |
| toSet.setTo(fChild.lastPos()); |
| } |
| |
| |
| // ------------------------------------------------------------------- |
| // Private data members |
| // |
| // fChild |
| // This is the reference to the one child that we have for this |
| // unary operation. |
| // ------------------------------------------------------------------- |
| private CMNode fChild; |
| }; |