109 lines
3.2 KiB
Java
109 lines
3.2 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;
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import org.apache.poi.hssf.record.formula.Ptg;
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import org.apache.poi.util.LittleEndian;
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import java.util.Stack;
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import java.util.Iterator;
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/**
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* Not implemented yet. May commit it anyway just so people can see
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* where I'm heading.
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*
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* @author Glen Stampoultzis (glens at apache.org)
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*/
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public final class LinkedDataFormulaField implements CustomField {
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Stack formulaTokens = new Stack();
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public int getSize()
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{
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int size = 0;
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for ( Iterator iterator = formulaTokens.iterator(); iterator.hasNext(); )
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{
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Ptg token = (Ptg) iterator.next();
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size += token.getSize();
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}
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return size + 2;
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}
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public int fillField( RecordInputStream in )
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{
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short tokenSize = in.readShort();
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formulaTokens = Ptg.createParsedExpressionTokens(tokenSize, in);
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return tokenSize + 2;
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}
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public void toString( StringBuffer buffer )
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{
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for ( int k = 0; k < formulaTokens.size(); k++ )
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{
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buffer.append( "Formula " )
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.append( k )
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.append( "=" )
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.append( formulaTokens.get( k ).toString() )
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.append( "\n" )
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.append( ( (Ptg) formulaTokens.get( k ) ).toDebugString() )
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.append( "\n" );
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}
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}
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public String toString()
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{
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StringBuffer b = new StringBuffer();
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toString( b );
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return b.toString();
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}
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public int serializeField( int offset, byte[] data )
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{
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int size = getSize();
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LittleEndian.putShort(data, offset, (short)(size - 2));
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int pos = offset + 2;
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pos += Ptg.serializePtgStack(formulaTokens, data, pos);
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return size;
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}
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public Object clone()
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{
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try
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{
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// todo: clone tokens? or are they immutable?
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return super.clone();
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}
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catch ( CloneNotSupportedException e )
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{
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// should not happen
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return null;
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}
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}
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public void setFormulaTokens( Stack formulaTokens )
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{
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this.formulaTokens = (Stack) formulaTokens.clone();
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}
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public Stack getFormulaTokens()
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{
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return (Stack)this.formulaTokens.clone();
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}
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}
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