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/*
* This file is part of the LibreOffice project.
*
* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/.
*
* This file incorporates work covered by the following license notice:
*
* 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 .
*/
package org.openoffice.xmerge.converter.xml.sxc.pexcel.records.formula;
import org.openoffice.xmerge.util.Debug;
/**
* This is the Factory class responsible for creating a <code>Token</code>.
* It has three methods for returning three different types of Tokens
* (Operator, Operand and Function).
* This utility class is used by either the <code>FormulaParser</code> or the
* <code>FormulaDecoder</code>.
*/
public class TokenFactory {
private OperatorLookup operatorLookup;
private OperandLookup operandLookup;
private FunctionLookup fl;
/**
* Default Constructor
*/
public TokenFactory() {
operatorLookup = new OperatorLookup();
operandLookup = new OperandLookup();
fl = new FunctionLookup();
}
/**
* The Factory method for creating function Tokens
*
* @return The created <code>Token</code>
*/
public Token getFunctionToken(String s, int args) {
Token t = null;
// We will have to fix this later to include fixed function tokens
// Also will need to handle errors where functions names are incorrect???
Debug.log(Debug.TRACE,"TokenFactory creating function Token : " + s);
try {
t = new Token(s, ParseToken.TOKEN_FUNCTION_VARIABLE, fl.getIDFromString(s), args);
} catch (UnsupportedFunctionException eFn) {
Debug.log(Debug.ERROR, eFn.getMessage());
}
return t;
}
/**
* The Factory method for creating operator Tokens
*
* @return The created <code>Token</code>
*/
public Token getOperatorToken(String s, int args) {
Token t = null;
Debug.log(Debug.TRACE,"TokenFactory creating operator Token : " + s);
try {
if(args==1) {
if(s.equals("+")) {
t = new Token(s, ParseToken.TOKEN_OPERATOR, operatorLookup.getIDFromString("UNARY_PLUS"), args);
} else if (s.equals("-")) {
t = new Token(s, ParseToken.TOKEN_OPERATOR, operatorLookup.getIDFromString("UNARY_MINUS"), args);
} else {
t = new Token(s, ParseToken.TOKEN_OPERATOR, operatorLookup.getIDFromString(s), args);
}
} else {
t = new Token(s, ParseToken.TOKEN_OPERATOR, operatorLookup.getIDFromString(s), args);
}
} catch (UnsupportedFunctionException eFn) {
Debug.log(Debug.ERROR, eFn.getMessage());
}
return t;
}
/**
* The Factory method for creating Operand Tokens
*
* @return The created <code>Token</code>
*/
public Token getOperandToken(String s, String type) {
Token t = null;
Debug.log(Debug.TRACE,"TokenFactory creating operand (" + type + ") Token : " + s);
try {
t = new Token(s, ParseToken.TOKEN_OPERAND, operandLookup.getIDFromString(type), 0);
} catch (UnsupportedFunctionException eFn) {
Debug.log(Debug.ERROR, eFn.getMessage());
}
return t;
}
}
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