79 lines
3.0 KiB
Java
79 lines
3.0 KiB
Java
/* ====================================================================
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Licensed to the Apache Software Foundation (ASF) under one or more
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contributor license agreements. See the NOTICE file distributed with
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this work for additional information regarding copyright ownership.
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The ASF licenses this file to You under the Apache License, Version 2.0
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(the "License"); you may not use this file except in compliance with
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the License. You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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==================================================================== */
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package org.apache.poi.hssf.record.formula;
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import org.apache.poi.hssf.record.formula.function.FunctionMetadata;
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import org.apache.poi.hssf.record.formula.function.FunctionMetadataRegistry;
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import org.apache.poi.util.LittleEndianInput;
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import org.apache.poi.util.LittleEndianOutput;
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/**
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* @author aviks
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* @author Jason Height (jheight at chariot dot net dot au)
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* @author Danny Mui (dmui at apache dot org) (Leftover handling)
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*/
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public final class FuncPtg extends AbstractFunctionPtg {
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public final static byte sid = 0x21;
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public final static int SIZE = 3;
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private int numParams=0;
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/**Creates new function pointer from a byte array
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* usually called while reading an excel file.
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*/
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public FuncPtg(LittleEndianInput in) {
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//field_1_num_args = data[ offset + 0 ];
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field_2_fnc_index = in.readShort();
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FunctionMetadata fm = FunctionMetadataRegistry.getFunctionByIndex(field_2_fnc_index);
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if(fm == null) {
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throw new RuntimeException("Invalid built-in function index (" + field_2_fnc_index + ")");
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}
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numParams = fm.getMinParams();
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returnClass = fm.getReturnClassCode();
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paramClass = fm.getParameterClassCodes();
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}
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public FuncPtg(int functionIndex) {
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field_2_fnc_index = (short) functionIndex;
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FunctionMetadata fm = FunctionMetadataRegistry.getFunctionByIndex(functionIndex);
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numParams = fm.getMinParams(); // same as max since these are not var-arg funcs
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returnClass = fm.getReturnClassCode();
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paramClass = fm.getParameterClassCodes();
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}
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public void write(LittleEndianOutput out) {
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out.writeByte(sid + getPtgClass());
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out.writeShort(field_2_fnc_index);
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}
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public int getNumberOfOperands() {
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return numParams;
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}
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public int getSize() {
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return SIZE;
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}
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public String toString() {
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StringBuffer sb = new StringBuffer(64);
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sb.append(getClass().getName()).append(" [");
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sb.append(lookupName(field_2_fnc_index));
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sb.append(" nArgs=").append(numParams);
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sb.append("]");
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return sb.toString();
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}
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} |