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/* -*- 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 .
*/
/** Parses the starmath code and creates the nodes.
*
*/
#ifndef INCLUDED_STARMATH_INC_PARSE_HXX
#define INCLUDED_STARMATH_INC_PARSE_HXX
#include <unotools/charclass.hxx>
#include <memory>
#include <set>
#include <vector>
#include "token.hxx"
#include "error.hxx"
class SmBlankNode;
class SmBinVerNode;
class SmBracebodyNode;
class SmExpressionNode;
class SmGlyphSpecialNode;
class SmNode;
class SmOperNode;
class SmSpecialNode;
class SmStructureNode;
class SmTableNode;
class SmTextNode;
#define DEPTH_LIMIT 1024
class SmParser
{
OUString m_aBufferString;
SmToken m_aCurToken;
std::vector<std::unique_ptr<SmErrorDesc>> m_aErrDescList;
int m_nCurError;
sal_Int32 m_nBufferIndex,
m_nTokenIndex;
sal_Int32 m_nRow, // 1-based
m_nColOff; // 0-based
bool m_bImportSymNames,
m_bExportSymNames;
sal_Int32 m_nParseDepth;
class DepthProtect
{
private:
sal_Int32& m_rParseDepth;
public:
DepthProtect(sal_Int32& rParseDepth)
: m_rParseDepth(rParseDepth)
{
++m_rParseDepth;
}
bool TooDeep() const { return m_rParseDepth > DEPTH_LIMIT; }
~DepthProtect()
{
--m_rParseDepth;
}
};
// map of used symbols (used to reduce file size by exporting only actually used symbols)
std::set< OUString > m_aUsedSymbols;
// CharClass representing a locale for parsing numbers
CharClass m_aNumCC;
// pointer to System locale's CharClass, which is alive inside SM_MOD()
const CharClass* m_pSysCC;
SmParser(const SmParser&) = delete;
SmParser& operator=(const SmParser&) = delete;
// Moves between tokens inside starmath code.
void NextToken();
void NextTokenColor(bool dvipload);
void NextTokenFontSize();
sal_Int32 GetTokenIndex() const { return m_nTokenIndex; }
void Replace( sal_Int32 nPos, sal_Int32 nLen, const OUString &rText );
inline bool TokenInGroup( TG nGroup );
// grammar
std::unique_ptr<SmTableNode> DoTable();
std::unique_ptr<SmNode> DoLine();
std::unique_ptr<SmNode> DoExpression(bool bUseExtraSpaces = true);
std::unique_ptr<SmNode> DoRelation();
std::unique_ptr<SmNode> DoSum();
std::unique_ptr<SmNode> DoProduct();
std::unique_ptr<SmNode> DoSubSup(TG nActiveGroup, SmNode *pGivenNode);
std::unique_ptr<SmNode> DoSubSupEvaluate(SmNode *pGivenNode);
std::unique_ptr<SmNode> DoOpSubSup();
std::unique_ptr<SmNode> DoPower();
std::unique_ptr<SmBlankNode> DoBlank();
std::unique_ptr<SmNode> DoTerm(bool bGroupNumberIdent);
std::unique_ptr<SmNode> DoEscape();
std::unique_ptr<SmOperNode> DoOperator();
std::unique_ptr<SmNode> DoOper();
std::unique_ptr<SmStructureNode> DoUnOper();
std::unique_ptr<SmNode> DoAlign(bool bUseExtraSpaces = true);
std::unique_ptr<SmStructureNode> DoFontAttribut();
std::unique_ptr<SmStructureNode> DoAttribut();
std::unique_ptr<SmStructureNode> DoFont();
std::unique_ptr<SmStructureNode> DoFontSize();
std::unique_ptr<SmStructureNode> DoColor();
std::unique_ptr<SmStructureNode> DoBrace();
std::unique_ptr<SmBracebodyNode> DoBracebody(bool bIsLeftRight);
std::unique_ptr<SmNode> DoEvaluate();
std::unique_ptr<SmTextNode> DoFunction();
std::unique_ptr<SmTableNode> DoBinom();
std::unique_ptr<SmBinVerNode> DoFrac();
std::unique_ptr<SmStructureNode> DoStack();
std::unique_ptr<SmStructureNode> DoMatrix();
std::unique_ptr<SmSpecialNode> DoSpecial();
std::unique_ptr<SmGlyphSpecialNode> DoGlyphSpecial();
std::unique_ptr<SmExpressionNode> DoError(SmParseError Error);
// end of grammar
public:
SmParser();
/** Parse rBuffer to formula tree */
std::unique_ptr<SmTableNode> Parse(const OUString &rBuffer);
/** Parse rBuffer to formula subtree that constitutes an expression */
std::unique_ptr<SmNode> ParseExpression(const OUString &rBuffer);
const OUString & GetText() const { return m_aBufferString; };
bool IsImportSymbolNames() const { return m_bImportSymNames; }
void SetImportSymbolNames(bool bVal) { m_bImportSymNames = bVal; }
bool IsExportSymbolNames() const { return m_bExportSymNames; }
void SetExportSymbolNames(bool bVal) { m_bExportSymNames = bVal; }
void AddError(SmParseError Type, SmNode *pNode);
const SmErrorDesc* NextError();
const SmErrorDesc* PrevError();
const SmErrorDesc* GetError();
const std::set< OUString >& GetUsedSymbols() const { return m_aUsedSymbols; }
};
inline bool SmParser::TokenInGroup( TG nGroup)
{
return bool(m_aCurToken.nGroup & nGroup);
}
#endif
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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