| /* ==================================================================== |
| 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.poi.ss.formula.ptg; |
| |
| import java.util.Map; |
| import java.util.function.Supplier; |
| |
| import org.apache.poi.util.LittleEndianOutput; |
| |
| /** |
| * While formula tokens are stored in RPN order and thus do not need parenthesis |
| * for precedence reasons, Parenthesis tokens ARE written to ensure that user |
| * entered parenthesis are displayed as-is on reading back |
| */ |
| public final class ParenthesisPtg extends ControlPtg { |
| |
| private static final int SIZE = 1; |
| public static final byte sid = 0x15; |
| |
| public static final ParenthesisPtg instance = new ParenthesisPtg(); |
| |
| private ParenthesisPtg() { |
| // enforce singleton |
| } |
| |
| public void write(LittleEndianOutput out) { |
| out.writeByte(sid + getPtgClass()); |
| } |
| |
| @Override |
| public byte getSid() { |
| return sid; |
| } |
| |
| public int getSize() { |
| return SIZE; |
| } |
| |
| public String toFormulaString() { |
| return "()"; |
| } |
| |
| public String toFormulaString(String[] operands) { |
| return "(" + operands[0] + ")"; |
| } |
| |
| @Override |
| public ParenthesisPtg copy() { |
| return instance; |
| } |
| |
| @Override |
| public Map<String, Supplier<?>> getGenericProperties() { |
| return null; |
| } |
| } |