14cfff500e
because this is often on a hot path, and we can avoid the splitting and joining of strings like this. Change-Id: Ia36047209368ca53431178c2e8723a18cfe8260a Reviewed-on: https://gerrit.libreoffice.org/c/core/+/119220 Tested-by: Jenkins Reviewed-by: Noel Grandin <noel.grandin@collabora.co.uk>
116 lines
3.1 KiB
C++
116 lines
3.1 KiB
C++
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
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/*
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* This file is part of the LibreOffice project.
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*
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* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/.
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*
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* This file incorporates work covered by the following license notice:
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*
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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
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* with this work for additional information regarding copyright
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* ownership. The ASF licenses this file to you under the Apache
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* License, Version 2.0 (the "License"); you may not use this file
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* except in compliance with the License. You may obtain a copy of
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* the License at http://www.apache.org/licenses/LICENSE-2.0 .
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*/
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/** Parses the starmath code and creates the nodes.
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*
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*/
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#pragma once
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#include <unotools/charclass.hxx>
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#include <unotools/resmgr.hxx>
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#include "node.hxx"
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#define DEPTH_LIMIT 1024
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// Those are the errors that the parser may encounter.
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enum class SmParseError : uint_fast8_t
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{
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None = 0,
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UnexpectedChar = 1,
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UnexpectedToken = 2,
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PoundExpected = 3,
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ColorExpected = 4,
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LgroupExpected = 5,
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RgroupExpected = 6,
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LbraceExpected = 7,
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RbraceExpected = 8,
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ParentMismatch = 9,
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RightExpected = 10,
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FontExpected = 11,
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SizeExpected = 12,
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DoubleAlign = 13,
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DoubleSubsupscript = 14,
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NumberExpected = 15
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};
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struct SmErrorDesc
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{
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SmParseError m_eType;
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SmNode* m_pNode;
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OUString m_aText;
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SmErrorDesc(SmParseError eType, SmNode* pNode, OUString aText)
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: m_eType(eType)
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, m_pNode(pNode)
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, m_aText(aText)
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{
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}
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};
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class DepthProtect
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{
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private:
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sal_Int32& m_rParseDepth;
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public:
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DepthProtect(sal_Int32& rParseDepth)
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: m_rParseDepth(rParseDepth)
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{
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++m_rParseDepth;
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if (m_rParseDepth > DEPTH_LIMIT)
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throw std::range_error("parser depth limit");
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}
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~DepthProtect() { --m_rParseDepth; }
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};
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namespace starmathdatabase
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{
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// Must be in sync with SmParseError list
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extern const TranslateId SmParseErrorDesc[16];
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OUString getParseErrorDesc(SmParseError err);
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}
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class AbstractSmParser
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{
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public:
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AbstractSmParser() {}
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virtual ~AbstractSmParser() {}
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/** Parse rBuffer to formula tree */
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virtual std::unique_ptr<SmTableNode> Parse(const OUString& rBuffer) = 0;
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/** Parse rBuffer to formula subtree that constitutes an expression */
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virtual std::unique_ptr<SmNode> ParseExpression(const OUString& rBuffer) = 0;
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virtual const OUString& GetText() const = 0;
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virtual bool IsImportSymbolNames() const = 0;
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virtual void SetImportSymbolNames(bool bVal) = 0;
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virtual bool IsExportSymbolNames() const = 0;
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virtual void SetExportSymbolNames(bool bVal) = 0;
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virtual const SmErrorDesc* NextError() = 0;
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virtual const SmErrorDesc* PrevError() = 0;
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virtual const SmErrorDesc* GetError() const = 0;
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virtual const std::set<OUString>& GetUsedSymbols() const = 0;
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};
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/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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