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| -rw-r--r-- | sc/inc/formularesult.hxx | 231 |
1 files changed, 231 insertions, 0 deletions
diff --git a/sc/inc/formularesult.hxx b/sc/inc/formularesult.hxx new file mode 100644 index 000000000..a52be96c3 --- /dev/null +++ b/sc/inc/formularesult.hxx @@ -0,0 +1,231 @@ +/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */ +/* + * 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 . + */ + +#ifndef INCLUDED_SC_INC_FORMULARESULT_HXX +#define INCLUDED_SC_INC_FORMULARESULT_HXX + +#include "scdllapi.h" +#include "global.hxx" +#include "calcmacros.hxx" +#include <svl/sharedstring.hxx> +#include <formula/token.hxx> +#include <formula/types.hxx> + +class ScMatrixFormulaCellToken; + +namespace sc { + +struct FormulaResultValue +{ + enum Type { Invalid, Value, String, Error }; + + Type meType; + + double mfValue; + svl::SharedString maString; + FormulaError mnError; + + FormulaResultValue(); + FormulaResultValue( double fValue ); + FormulaResultValue( const svl::SharedString& rStr ); + FormulaResultValue( FormulaError nErr ); +}; + +} + +/** Store a variable formula cell result, balancing between runtime performance + and memory consumption. */ +class ScFormulaResult +{ + typedef unsigned char Multiline; + static const Multiline MULTILINE_UNKNOWN = 0; + static const Multiline MULTILINE_FALSE = 1; + static const Multiline MULTILINE_TRUE = 2; + + // Clone token if the 16-bit only reference counter is nearing it's + // capacity during fill or copy&paste, leaving 4k for temporary passing + // around. (That should be enough for all times (TM) ;-) + static const sal_uInt16 MAX_TOKENREF_COUNT = 0xf000; + static void IncrementTokenRef( const formula::FormulaToken* & rp ) + { + if (rp) + { + if (rp->GetRef() >= MAX_TOKENREF_COUNT) + rp = rp->Clone(); + rp->IncRef(); + } + } + + union + { + double mfValue; // double result direct for performance and memory consumption + const formula::FormulaToken* mpToken; // if not, result token obtained from interpreter + }; + bool mbToken :1; // whether content of union is a token + bool mbEmpty :1; // empty cell result + bool mbEmptyDisplayedAsString :1; // only if mbEmpty + // If set it implies that the result is a simple double (in mfValue) and no error + bool mbValueCached :1; + Multiline meMultiline :2; // result is multiline + FormulaError mnError; // error code + + /** Reset mnError, mbEmpty and mbEmptyDisplayedAsString to their defaults + prior to assigning other types */ + void ResetToDefaults(); + + /** If token is of formula::svError set error code and decrement RefCount. + If token is of formula::svEmptyCell set mbEmpty and mbEmptyAsString and + decrement RefCount. + If token is of formula::svDouble set mfValue and decrement RefCount. + Else assign token to mpToken. NULL is valid => svUnknown. + Other member variables are set accordingly. + @precondition: Token MUST had been IncRef'ed prior to this call! + @precondition: An already existing different mpToken MUST had been + DecRef'ed prior to this call, p will be assigned to mpToken if not + resolved. + ATTENTION! Token may get deleted in this call! */ + void ResolveToken( const formula::FormulaToken * p ); + +public: + /** Effectively type svUnknown. */ + ScFormulaResult(); + + ScFormulaResult( const ScFormulaResult & r ); + + /** Same comments as for SetToken() apply! */ + explicit ScFormulaResult( const formula::FormulaToken* p ); + + ~ScFormulaResult(); + + /** Well, guess what ... */ + ScFormulaResult& operator=( const ScFormulaResult & r ); + + /** Assignment as in operator=() but without return */ + void Assign( const ScFormulaResult & r ); + + /** Sets a direct double if token type is formula::svDouble, or mbEmpty if + formula::svEmptyCell, else token. If p is NULL, that is set as well, effectively + resulting in GetType()==svUnknown. If the already existing result is + ScMatrixFormulaCellToken, the upper left is set to token. + + ATTENTION! formula::FormulaToken had to be allocated using 'new' and if of type + formula::svDouble and no RefCount was set may not be used after this call + because it was deleted after decrement! */ + void SetToken( const formula::FormulaToken* p ); + + /** May be NULL if SetToken() did so, also if type formula::svDouble or formula::svError! */ + formula::FormulaConstTokenRef GetToken() const; + + /** Return upper left token if formula::svMatrixCell, else return GetToken(). + May be NULL if SetToken() did so, also if type formula::svDouble or formula::svError! */ + formula::FormulaConstTokenRef GetCellResultToken() const; + + /** Return type of result, including formula::svError, formula::svEmptyCell, formula::svDouble and + formula::svMatrixCell. */ + formula::StackVar GetType() const; + + /** If type is formula::svMatrixCell return the type of upper left element, else + GetType() */ + formula::StackVar GetCellResultType() const; + + /** If type is formula::svEmptyCell (including matrix upper left) and should be + displayed as empty string */ + bool IsEmptyDisplayedAsString() const; + + /** Test for cell result type formula::svDouble, including upper left if + formula::svMatrixCell. Also included is formula::svError for legacy, because previously + an error result was treated like a numeric value at some places in + ScFormulaCell. Also included is formula::svEmptyCell as a reference to an empty + cell usually is treated as numeric 0. Use GetCellResultType() for + details instead. */ + bool IsValue() const; + + bool IsValueNoError() const; + + /** Determines whether or not the result is a string containing more than + one paragraph */ + bool IsMultiline() const; + + bool GetErrorOrDouble( FormulaError& rErr, double& rVal ) const; + sc::FormulaResultValue GetResult() const; + + /** Get error code if set or GetCellResultType() is formula::svError or svUnknown, + else 0. */ + FormulaError GetResultError() const; + + /** Set error code, don't touch token or double. */ + void SetResultError( FormulaError nErr ); + + /** Set direct double. Shouldn't be used externally except in + ScFormulaCell for rounded CalcAsShown or SetErrCode() or + SetResultDouble(), see there for condition. If + ScMatrixFormulaCellToken the token isn't replaced but upper + left result is modified instead, but only if it was of type + formula::svDouble before or not set at all. + */ + void SetDouble( double f ); + + /** Return value if type formula::svDouble or formula::svHybridCell or formula::svMatrixCell and upper + left formula::svDouble, else 0.0 */ + double GetDouble() const; + + /** Return string if type formula::svString or formula::svHybridCell or formula::svMatrixCell and + upper left formula::svString, else empty string. */ + svl::SharedString GetString() const; + + /** Return matrix if type formula::svMatrixCell and ScMatrix present, else NULL. */ + ScConstMatrixRef GetMatrix() const; + + /** Return formula string if type formula::svHybridCell, else empty string. */ + const OUString& GetHybridFormula() const; + + /** Should only be used by import filters, best in the order + SetHybridDouble(), SetHybridString(), or only SetHybridFormula() for + formula string to be compiled later. */ + void SetHybridDouble( double f ); + + /** Should only be used by import filters, best in the order + SetHybridDouble(), SetHybridString()/SetHybridFormula(), or only + SetHybridFormula() for formula string to be compiled later. */ + void SetHybridString( const svl::SharedString & rStr ); + + /** Should only be used by import filters, best in the order + SetHybridDouble(), SetHybridFormula(), + SetHybridEmptyDisplayedAsString() must be last. */ + void SetHybridEmptyDisplayedAsString(); + + /** Should only be used by import filters, best in the order + SetHybridDouble(), SetHybridString()/SetHybridFormula(), or only + SetHybridFormula() for formula string to be compiled later. */ + void SetHybridFormula( const OUString & rFormula ); + + void SetMatrix( SCCOL nCols, SCROW nRows, const ScConstMatrixRef& pMat, const formula::FormulaToken* pUL ); + + /** Get the const ScMatrixFormulaCellToken* if token is of that type, else + NULL. */ + const ScMatrixFormulaCellToken* GetMatrixFormulaCellToken() const; + + /** Get the ScMatrixFormulaCellToken* if token is of that type, else NULL. + Shouldn't be used externally except by ScFormulaCell::SetMatColsRows(). */ + ScMatrixFormulaCellToken* GetMatrixFormulaCellTokenNonConst(); +}; + +#endif // INCLUDED_SC_INC_FORMULARESULT_HXX + +/* vim:set shiftwidth=4 softtabstop=4 expandtab: */ |