FormulaParser changes to support IF function(s)
git-svn-id: https://svn.apache.org/repos/asf/jakarta/poi/trunk@353027 13f79535-47bb-0310-9956-ffa450edef68
This commit is contained in:
Danny Muid
parent
9087b6e859
commit
9dfd573ce7
@ -2,7 +2,7 @@
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/* ====================================================================
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* The Apache Software License, Version 1.1
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*
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* Copyright (c) 2002 The Apache Software Foundation. All rights
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* Copyright (c) 2002, 2003 The Apache Software Foundation. All rights
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* reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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@ -56,12 +56,34 @@
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package org.apache.poi.hssf.model;
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import org.apache.poi.hssf.record.formula.*;
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import org.apache.poi.hssf.util.SheetReferences;
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import java.util.ArrayList;
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import java.util.Iterator;
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import java.util.LinkedList;
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import java.util.List;
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import org.apache.poi.hssf.record.formula.AbstractFunctionPtg;
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import org.apache.poi.hssf.record.formula.AddPtg;
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import org.apache.poi.hssf.record.formula.Area3DPtg;
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import org.apache.poi.hssf.record.formula.AreaPtg;
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import org.apache.poi.hssf.record.formula.AttrPtg;
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import org.apache.poi.hssf.record.formula.BoolPtg;
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import org.apache.poi.hssf.record.formula.ConcatPtg;
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import org.apache.poi.hssf.record.formula.DividePtg;
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import org.apache.poi.hssf.record.formula.EqualPtg;
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import org.apache.poi.hssf.record.formula.FuncVarPtg;
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import org.apache.poi.hssf.record.formula.IntPtg;
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import org.apache.poi.hssf.record.formula.MultiplyPtg;
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import org.apache.poi.hssf.record.formula.NumberPtg;
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import org.apache.poi.hssf.record.formula.OperationPtg;
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import org.apache.poi.hssf.record.formula.ParenthesisPtg;
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import org.apache.poi.hssf.record.formula.PowerPtg;
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import org.apache.poi.hssf.record.formula.Ptg;
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import org.apache.poi.hssf.record.formula.Ref3DPtg;
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import org.apache.poi.hssf.record.formula.ReferencePtg;
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import org.apache.poi.hssf.record.formula.StringPtg;
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import org.apache.poi.hssf.record.formula.SubtractPtg;
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import org.apache.poi.hssf.util.SheetReferences;
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/**
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* This class parses a formula string into a List of tokens in RPN order.
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@ -90,6 +112,12 @@ public class FormulaParser {
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private int formulaLength;
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private List tokens = new java.util.Stack();
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/**
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* Using an unsynchronized linkedlist to implement a stack since we're not multi-threaded.
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*/
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private List functionTokens = new LinkedList();
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//private Stack tokens = new java.util.Stack();
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private List result = new ArrayList();
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private int numParen;
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@ -98,6 +126,7 @@ public class FormulaParser {
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private static char CR = '\n';
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private char look; // Lookahead Character
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private boolean inFunction = false;
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private Workbook book;
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@ -297,23 +326,138 @@ public class FormulaParser {
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}
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}
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/**
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* Adds a pointer to the last token to the latest function argument list.
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* @param obj
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*/
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private void addArgumentPointer() {
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if (this.functionTokens.size() > 0) {
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//no bounds check because this method should not be called unless a token array is setup by function()
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List arguments = (List)this.functionTokens.get(0);
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arguments.add(tokens.get(tokens.size()-1));
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}
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}
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private void function(String name) {
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//average 2 args per function
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this.functionTokens.add(0, new ArrayList(2));
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Match('(');
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int numArgs = Arguments();
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Match(')');
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tokens.add(getFunction(name,(byte)numArgs));
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Ptg functionPtg = getFunction(name,(byte)numArgs);
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tokens.add(functionPtg);
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//remove what we just put in
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this.functionTokens.remove(0);
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}
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/**
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* Adds the size of all the ptgs after the provided index (inclusive).
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* <p>
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* Initially used to count a goto
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* @param index
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* @return int
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*/
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private int getPtgSize(int index) {
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int count = 0;
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Iterator ptgIterator = tokens.listIterator(index);
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while (ptgIterator.hasNext()) {
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Ptg ptg = (Ptg)ptgIterator.next();
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count+=ptg.getSize();
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}
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return count;
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}
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private int getPtgSize(int start, int end) {
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int count = 0;
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int index = start;
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Iterator ptgIterator = tokens.listIterator(index);
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while (ptgIterator.hasNext() && index <= end) {
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Ptg ptg = (Ptg)ptgIterator.next();
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count+=ptg.getSize();
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index++;
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}
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return count;
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}
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/**
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* Generates the variable function ptg for the formula.
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* <p>
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* For IF Formulas, additional PTGs are added to the tokens
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* @param name
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* @param numArgs
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* @return Ptg a null is returned if we're in an IF formula, it needs extreme manipulation and is handled in this function
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*/
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private Ptg getFunction(String name,byte numArgs) {
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Ptg retval = null;
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//retval = new FuncVarPtg(name,numArgs);
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if (name.equals("IF")) {
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AttrPtg ptg = new AttrPtg();
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ptg.setData((short)6); //sums don't care but this is what excel does.
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ptg.setOptimizedIf(true);
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retval = ptg;
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retval = new FuncVarPtg(AbstractFunctionPtg.ATTR_NAME, numArgs);
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//simulated pop, no bounds checking because this list better be populated by function()
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List argumentPointers = (List)this.functionTokens.get(0);
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AttrPtg ifPtg = new AttrPtg();
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ifPtg.setData((short)7); //mirroring excel output
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ifPtg.setOptimizedIf(true);
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if (argumentPointers.size() != 2 && argumentPointers.size() != 3) {
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throw new IllegalArgumentException("["+argumentPointers.size()+"] Arguments Found - An IF formula requires 2 or 3 arguments. IF(CONDITION, TRUE_VALUE, FALSE_VALUE [OPTIONAL]");
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}
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//Biffview of an IF formula record indicates the attr ptg goes after the condition ptgs and are
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//tracked in the argument pointers
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//The beginning first argument pointer is the last ptg of the condition
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int ifIndex = tokens.indexOf(argumentPointers.get(0))+1;
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tokens.add(ifIndex, ifPtg);
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//we now need a goto ptgAttr to skip to the end of the formula after a true condition
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//the true condition is should be inserted after the last ptg in the first argument
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int gotoIndex = tokens.indexOf(argumentPointers.get(1))+1;
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AttrPtg goto1Ptg = new AttrPtg();
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goto1Ptg.setGoto(true);
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tokens.add(gotoIndex, goto1Ptg);
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if (numArgs > 2) { //only add false jump if there is a false condition
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//second goto to skip past the function ptg
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AttrPtg goto2Ptg = new AttrPtg();
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goto2Ptg.setGoto(true);
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goto2Ptg.setData((short)(retval.getSize()-1));
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//Page 472 of the Microsoft Excel Developer's kit states that:
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//The b(or w) field specifies the number byes (or words to skip, minus 1
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tokens.add(goto2Ptg); //this goes after all the arguments are defined
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}
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//data portion of the if ptg points to the false subexpression (Page 472 of MS Excel Developer's kit)
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//count the number of bytes after the ifPtg to the False Subexpression
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//doesn't specify -1 in the documentation
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ifPtg.setData((short)(getPtgSize(ifIndex+1, gotoIndex)));
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//count all the additional (goto) ptgs but dont count itself
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int ptgCount = this.getPtgSize(gotoIndex)-goto1Ptg.getSize()+retval.getSize();
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if (ptgCount > (int)Short.MAX_VALUE) {
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throw new RuntimeException("Ptg Size exceeds short when being specified for a goto ptg in an if");
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}
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goto1Ptg.setData((short)(ptgCount-1));
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} else {
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retval = new FuncVarPtg(name,numArgs);
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retval = new FuncVarPtg(name,numArgs);
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}
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return retval;
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@ -451,6 +595,8 @@ public class FormulaParser {
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if (look == '*') Multiply();
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if (look == '/') Divide();
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}
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addArgumentPointer();
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}
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@ -1,3 +1,56 @@
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/* ====================================================================
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* The Apache Software License, Version 1.1
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*
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* Copyright (c) 2002, 2003 The Apache Software Foundation. All rights
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* reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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*
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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*
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* 3. The end-user documentation included with the redistribution,
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* if any, must include the following acknowledgment:
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* "This product includes software developed by the
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* Apache Software Foundation (http://www.apache.org/)."
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* Alternately, this acknowledgment may appear in the software itself,
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* if and wherever such third-party acknowledgments normally appear.
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*
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* 4. The names "Apache" and "Apache Software Foundation" and
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* "Apache POI" must not be used to endorse or promote products
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* derived from this software without prior written permission. For
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* written permission, please contact apache@apache.org.
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*
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* 5. Products derived from this software may not be called "Apache",
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* "Apache POI", nor may "Apache" appear in their name, without
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* prior written permission of the Apache Software Foundation.
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*
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* THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
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* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR
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* ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
|
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
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* USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
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* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
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* OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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* ====================================================================
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*
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* This software consists of voluntary contributions made by many
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* individuals on behalf of the Apache Software Foundation. For more
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* information on the Apache Software Foundation, please see
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* <http://www.apache.org/>.
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*/
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package org.apache.poi.hssf.record.formula;
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import org.apache.poi.util.BinaryTree;
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@ -13,6 +66,8 @@ import java.util.Stack;
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* @author Andrew C. Oliver (acoliver at apache dot org)
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*/
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public abstract class AbstractFunctionPtg extends OperationPtg {
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//constant used allow a ptgAttr to be mapped properly for its functionPtg
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public static final String ATTR_NAME = "specialflag";
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private final static int SIZE = 4;
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@ -2,7 +2,7 @@
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/* ====================================================================
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* The Apache Software License, Version 1.1
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*
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* Copyright (c) 2002 The Apache Software Foundation. All rights
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* Copyright (c) 2002, 2003 The Apache Software Foundation. All rights
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* reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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@ -144,6 +144,14 @@ public class AttrPtg
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field_1_options=optiIf.setByteBoolean(field_1_options,bif);
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}
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/**
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* Flags this ptg as a goto/jump
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* @param isGoto
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*/
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public void setGoto(boolean isGoto) {
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field_1_options=optGoto.setByteBoolean(field_1_options, isGoto);
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}
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// lets hope no one uses this anymore
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public boolean isBaxcel()
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{
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@ -1,3 +1,56 @@
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/* ====================================================================
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* The Apache Software License, Version 1.1
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*
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* Copyright (c) 2002, 2003 The Apache Software Foundation. All rights
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* reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
|
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* notice, this list of conditions and the following disclaimer.
|
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*
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* 2. Redistributions in binary form must reproduce the above copyright
|
||||
* notice, this list of conditions and the following disclaimer in
|
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* the documentation and/or other materials provided with the
|
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* distribution.
|
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*
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* 3. The end-user documentation included with the redistribution,
|
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* if any, must include the following acknowledgment:
|
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* "This product includes software developed by the
|
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* Apache Software Foundation (http://www.apache.org/)."
|
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* Alternately, this acknowledgment may appear in the software itself,
|
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* if and wherever such third-party acknowledgments normally appear.
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*
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* 4. The names "Apache" and "Apache Software Foundation" and
|
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* "Apache POI" must not be used to endorse or promote products
|
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* derived from this software without prior written permission. For
|
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* written permission, please contact apache@apache.org.
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*
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* 5. Products derived from this software may not be called "Apache",
|
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* "Apache POI", nor may "Apache" appear in their name, without
|
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* prior written permission of the Apache Software Foundation.
|
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*
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* THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
|
||||
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
|
||||
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
|
||||
* DISCLAIMED. IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR
|
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* ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
|
||||
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
|
||||
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
|
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* USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
|
||||
* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
|
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* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
|
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* OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
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* SUCH DAMAGE.
|
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* ====================================================================
|
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*
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* This software consists of voluntary contributions made by many
|
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* individuals on behalf of the Apache Software Foundation. For more
|
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* information on the Apache Software Foundation, please see
|
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* <http://www.apache.org/>.
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*/
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package org.apache.poi.hssf.model;
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import junit.framework.TestCase;
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@ -80,19 +133,94 @@ public class TestFormulaParser extends TestCase {
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FormulaParser fp = new FormulaParser(yn, null);
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fp.parse();
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Ptg[] asts = fp.getRPNPtg();
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assertEquals(4, asts.length);
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assertEquals(7, asts.length);
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BoolPtg flag = (BoolPtg) asts[0];
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StringPtg y = (StringPtg) asts[1];
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StringPtg n = (StringPtg) asts[2];
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AttrPtg funif = (AttrPtg) asts[3];
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AttrPtg funif = (AttrPtg) asts[1];
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StringPtg y = (StringPtg) asts[2];
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AttrPtg goto1 = (AttrPtg) asts[3];
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StringPtg n = (StringPtg) asts[4];
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assertEquals(true, flag.getValue());
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assertEquals("Y", y.getValue());
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assertEquals("N", n.getValue());
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assertEquals("IF", funif.toFormulaString(new SheetReferences()));
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assertTrue("Goto ptg exists", goto1.isGoto());
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}
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public void testSimpleIf() throws Exception {
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final String simpleif = "IF(1=1,0,1)";
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FormulaParser fp = new FormulaParser(simpleif, null);
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fp.parse();
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Ptg[] asts = fp.getRPNPtg();
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assertEquals(9, asts.length);
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IntPtg op1 = (IntPtg) asts[0];
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IntPtg op2 = (IntPtg) asts[1];
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EqualPtg eq = (EqualPtg) asts[2];
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AttrPtg ifPtg = (AttrPtg) asts[3];
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IntPtg res1 = (IntPtg) asts[4];
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AttrPtg ptgGoto= (AttrPtg) asts[5];
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assertEquals("Goto 1 Length", (short)10, ptgGoto.getData());
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IntPtg res2 = (IntPtg) asts[6];
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AttrPtg ptgGoto2 = (AttrPtg) asts[7];
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assertEquals("Goto 2 Length", (short)3, ptgGoto2.getData());
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assertEquals("If FALSE offset", (short)7, ifPtg.getData());
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FuncVarPtg funcPtg = (FuncVarPtg)asts[8];
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}
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/**
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* Make sure the ptgs are generated properly with two functions embedded
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*
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*/
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public void testNestedFunctionIf() {
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String function = "IF(A1=B1,AVERAGE(A1:B1),AVERAGE(A2:B2))";
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FormulaParser fp = new FormulaParser(function, null);
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fp.parse();
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Ptg[] asts = fp.getRPNPtg();
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assertEquals("11 Ptgs expected", 11, asts.length);
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assertTrue("IF Attr set correctly", (asts[3] instanceof AttrPtg));
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AttrPtg ifFunc = (AttrPtg)asts[3];
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assertTrue("It is not an if", ifFunc.isOptimizedIf());
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assertTrue("Average Function set correctly", (asts[5] instanceof FuncVarPtg));
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}
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public void testIfSingleCondition(){
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String function = "IF(1=1,10)";
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FormulaParser fp = new FormulaParser(function, null);
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fp.parse();
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Ptg[] asts = fp.getRPNPtg();
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assertEquals("7 Ptgs expected", 7, asts.length);
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|
||||
assertTrue("IF Attr set correctly", (asts[3] instanceof AttrPtg));
|
||||
AttrPtg ifFunc = (AttrPtg)asts[3];
|
||||
assertTrue("It is not an if", ifFunc.isOptimizedIf());
|
||||
|
||||
assertTrue("Single Value is not an IntPtg", (asts[4] instanceof IntPtg));
|
||||
IntPtg intPtg = (IntPtg)asts[4];
|
||||
assertEquals("Result", (short)10, intPtg.getValue());
|
||||
|
||||
assertTrue("Ptg is not a Variable Function", (asts[6] instanceof FuncVarPtg));
|
||||
FuncVarPtg funcPtg = (FuncVarPtg)asts[6];
|
||||
assertEquals("Arguments", 2, funcPtg.getNumberOfOperands());
|
||||
|
||||
|
||||
|
||||
|
||||
}
|
||||
|
||||
public static void main(String [] args) {
|
||||
System.out.println("Testing org.apache.poi.hssf.record.formula.FormulaParser");
|
||||
|
||||
@ -2,7 +2,7 @@
|
||||
/* ====================================================================
|
||||
* The Apache Software License, Version 1.1
|
||||
*
|
||||
* Copyright (c) 2002 The Apache Software Foundation. All rights
|
||||
* Copyright (c) 2002, 2003 The Apache Software Foundation. All rights
|
||||
* reserved.
|
||||
*
|
||||
* Redistribution and use in source and binary forms, with or without
|
||||
@ -894,7 +894,7 @@ extends TestCase {
|
||||
|
||||
}
|
||||
|
||||
/*
|
||||
|
||||
public void testIfFormulas()
|
||||
throws java.io.IOException
|
||||
{
|
||||
@ -936,8 +936,55 @@ extends TestCase {
|
||||
//c = r.getCell((short)1);
|
||||
//assertTrue("expected: A!A1+A!B1 got: "+c.getCellFormula(), ("A!A1+A!B1").equals(c.getCellFormula()));
|
||||
in.close();
|
||||
|
||||
File simpleIf = File.createTempFile("testSimpleIfFormulaWrite",".xls");
|
||||
out = new FileOutputStream(simpleIf);
|
||||
wb = new HSSFWorkbook();
|
||||
s = wb.createSheet("Sheet1");
|
||||
r = null;
|
||||
c = null;
|
||||
r = s.createRow((short)0);
|
||||
c=r.createCell((short)0); c.setCellFormula("IF(1=1,0,1)");
|
||||
|
||||
wb.write(out);
|
||||
out.close();
|
||||
assertTrue("file exists", simpleIf.exists());
|
||||
|
||||
assertTrue("length of simpleIf file is zero", (simpleIf.length()>0));
|
||||
|
||||
File nestedIf = File.createTempFile("testNestedIfFormula",".xls");
|
||||
out = new FileOutputStream(nestedIf);
|
||||
wb = new HSSFWorkbook();
|
||||
s = wb.createSheet("Sheet1");
|
||||
r = null;
|
||||
c = null;
|
||||
r = s.createRow((short)0);
|
||||
c=r.createCell((short)0);
|
||||
c.setCellValue(1);
|
||||
|
||||
c=r.createCell((short)1);
|
||||
c.setCellValue(3);
|
||||
|
||||
|
||||
HSSFCell formulaCell=r.createCell((short)3);
|
||||
|
||||
r = s.createRow((short)1);
|
||||
c=r.createCell((short)0);
|
||||
c.setCellValue(3);
|
||||
|
||||
c=r.createCell((short)1);
|
||||
c.setCellValue(7);
|
||||
|
||||
formulaCell.setCellFormula("IF(A1=B1,AVERAGE(A1:B1),AVERAGE(A2:B2))");
|
||||
|
||||
|
||||
wb.write(out);
|
||||
out.close();
|
||||
assertTrue("file exists", nestedIf.exists());
|
||||
|
||||
assertTrue("length of nestedIf file is zero", (nestedIf.length()>0));
|
||||
}
|
||||
*/
|
||||
|
||||
|
||||
public static void main(String [] args) {
|
||||
System.out
|
||||
|
||||
Loading…
Reference in New Issue
Block a user