253 lines
10 KiB
C++
253 lines
10 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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#ifndef INCLUDED_CONNECTIVITY_SQLPARSE_HXX
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#define INCLUDED_CONNECTIVITY_SQLPARSE_HXX
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#include <com/sun/star/uno/Reference.h>
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#include <osl/mutex.hxx>
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#include <connectivity/sqlnode.hxx>
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#ifndef DISABLE_DBCONNECTIVITY
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#ifndef YYBISON
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#ifndef FLEX_SCANNER
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#include "sqlbison.hxx"
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#endif
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#endif
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#endif
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#include <com/sun/star/i18n/XCharacterClassification.hpp>
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#include <com/sun/star/lang/XMultiServiceFactory.hpp>
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#include <com/sun/star/i18n/XLocaleData4.hpp>
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#include <connectivity/IParseContext.hxx>
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#include <connectivity/dbtoolsdllapi.hxx>
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#include <connectivity/sqlerror.hxx>
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#include <salhelper/singletonref.hxx>
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#include <map>
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// forward declarations
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namespace com
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{
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namespace sun
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{
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namespace star
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{
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namespace beans
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{
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class XPropertySet;
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}
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namespace util
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{
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class XNumberFormatter;
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}
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namespace lang
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{
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struct Locale;
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}
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}
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}
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}
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namespace connectivity
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{
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class OSQLScanner;
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class SQLError;
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//==========================================================================
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//= OParseContext
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//==========================================================================
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class OOO_DLLPUBLIC_DBTOOLS OParseContext : public IParseContext
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{
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public:
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OParseContext();
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virtual ~OParseContext();
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// retrieves language specific error messages
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virtual OUString getErrorMessage(ErrorCode _eCodes) const;
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// retrieves language specific keyword strings (only ASCII allowed)
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virtual OString getIntlKeywordAscii(InternationalKeyCode _eKey) const;
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// finds out, if we have an international keyword (only ASCII allowed)
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virtual InternationalKeyCode getIntlKeyCode(const OString& rToken) const;
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// determines the default international setting
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static const ::com::sun::star::lang::Locale& getDefaultLocale();
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/** get's a locale instance which should be used when parsing in the context specified by this instance
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<p>if this is not overridden by derived classes, it returns the static default locale.</p>
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*/
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virtual ::com::sun::star::lang::Locale getPreferredLocale( ) const;
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};
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//==========================================================================
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// OSQLParseNodesContainer
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// grabage collection of nodes
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//==========================================================================
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class OSQLParseNodesContainer
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{
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::osl::Mutex m_aMutex;
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::std::vector< OSQLParseNode* > m_aNodes;
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public:
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OSQLParseNodesContainer();
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~OSQLParseNodesContainer();
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void push_back(OSQLParseNode* _pNode);
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void erase(OSQLParseNode* _pNode);
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void clear();
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void clearAndDelete();
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};
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typedef salhelper::SingletonRef<OSQLParseNodesContainer> OSQLParseNodesGarbageCollector;
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//==========================================================================
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//= OSQLParser
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//==========================================================================
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struct OSQLParser_Data
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{
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::com::sun::star::lang::Locale aLocale;
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::connectivity::SQLError aErrors;
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OSQLParser_Data( const ::com::sun::star::uno::Reference< ::com::sun::star::uno::XComponentContext >& _rxContext )
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:aErrors( _rxContext )
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{
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}
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};
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/** Parser for SQL92
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*/
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class OOO_DLLPUBLIC_DBTOOLS OSQLParser
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{
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friend class OSQLParseNode;
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friend class OSQLInternalNode;
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friend struct SQLParseNodeParameter;
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private:
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typedef ::std::map< sal_uInt32, OSQLParseNode::Rule > RuleIDMap;
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// static parts for parsers
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static sal_uInt32 s_nRuleIDs[OSQLParseNode::rule_count + 1];
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static RuleIDMap s_aReverseRuleIDLookup;
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static OParseContext s_aDefaultContext;
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static OSQLScanner* s_pScanner;
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static OSQLParseNodesGarbageCollector* s_pGarbageCollector;
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static sal_Int32 s_nRefCount;
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// information on the current parse action
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const IParseContext* m_pContext;
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OSQLParseNode* m_pParseTree; // result from parsing
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::std::auto_ptr< OSQLParser_Data >
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m_pData;
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OUString m_sFieldName; // current field name for a predicate
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OUString m_sErrorMessage;// current error msg
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::com::sun::star::uno::Reference< ::com::sun::star::beans::XPropertySet >
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m_xField; // current field
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::com::sun::star::uno::Reference< ::com::sun::star::util::XNumberFormatter >
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m_xFormatter; // current number formatter
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sal_Int32 m_nFormatKey; // numberformat, which should be used
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sal_Int32 m_nDateFormatKey;
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::com::sun::star::uno::Reference< ::com::sun::star::uno::XComponentContext > m_xContext;
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::com::sun::star::uno::Reference< ::com::sun::star::i18n::XCharacterClassification> m_xCharClass;
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static ::com::sun::star::uno::Reference< ::com::sun::star::i18n::XLocaleData4> s_xLocaleData;
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::com::sun::star::uno::Reference< ::com::sun::star::i18n::XLocaleData> xDummy; // can be deleted after 627
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// convert a string into double trim it to scale of _nscale and than transform it back to string
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OUString stringToDouble(const OUString& _rValue,sal_Int16 _nScale);
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OSQLParseNode* buildDate(sal_Int32 _nType,OSQLParseNode*& pLiteral);
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bool extractDate(OSQLParseNode* pLiteral,double& _rfValue);
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void killThousandSeparator(OSQLParseNode* pLiteral);
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OSQLParseNode* convertNode(sal_Int32 nType,OSQLParseNode*const& pLiteral);
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// makes a string out of a number, pLiteral will be deleted
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OSQLParseNode* buildNode_STR_NUM(OSQLParseNode*& pLiteral);
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OSQLParseNode* buildNode_Date(const double& fValue, sal_Int32 nType);
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static ::osl::Mutex& getMutex();
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public:
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// if NULL, a default context will be used
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// the context must live as long as the parser
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OSQLParser(const ::com::sun::star::uno::Reference< ::com::sun::star::uno::XComponentContext >& rxContext, const IParseContext* _pContext = NULL);
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~OSQLParser();
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// Parsing an SQLStatement
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OSQLParseNode* parseTree(OUString& rErrorMessage,
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const OUString& rStatement,
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sal_Bool bInternational = sal_False);
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// Check a Predicate
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OSQLParseNode* predicateTree(OUString& rErrorMessage, const OUString& rStatement,
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const ::com::sun::star::uno::Reference< ::com::sun::star::util::XNumberFormatter > & xFormatter,
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const ::com::sun::star::uno::Reference< ::com::sun::star::beans::XPropertySet > & xField);
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// Access to the context
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const IParseContext& getContext() const {return *m_pContext;}
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/// access to the SQLError instance owned by this parser
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const SQLError& getErrorHelper() const;
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// TokenIDToStr: token name belonging to a token number.
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static OString TokenIDToStr(sal_uInt32 nTokenID, const IParseContext* pContext = NULL);
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#if OSL_DEBUG_LEVEL > 1
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// (empty string if not found)
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static OUString RuleIDToStr(sal_uInt32 nRuleID);
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#endif
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// StrToRuleID calculates the RuleID for a OUString (that is, ::com::sun::star::sdbcx::Index in yytname)
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// (0 if not found). The search for an ID based on a String is
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// extremely inefficient (sequential search for OUString)!
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static sal_uInt32 StrToRuleID(const OString & rValue);
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static OSQLParseNode::Rule RuleIDToRule( sal_uInt32 _nRule );
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// RuleId with enum, far more efficient
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static sal_uInt32 RuleID(OSQLParseNode::Rule eRule);
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// compares the _sFunctionName with all known function names and return the DataType of the return value
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static sal_Int32 getFunctionReturnType(const OUString& _sFunctionName, const IParseContext* pContext = NULL);
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// returns the type for a parameter in a given function name
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static sal_Int32 getFunctionParameterType(sal_uInt32 _nTokenId,sal_uInt32 _nPos);
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void error(const sal_Char *fmt);
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int SQLlex();
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#ifdef YYBISON
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void setParseTree(OSQLParseNode * pNewParseTree);
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// Is the parse in a special mode?
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// Predicate chack is used to check a condition for a field
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sal_Bool inPredicateCheck() const {return m_xField.is();}
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const OUString& getFieldName() const {return m_sFieldName;}
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void reduceLiteral(OSQLParseNode*& pLiteral, sal_Bool bAppendBlank);
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// does not change the pLiteral argument
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sal_Int16 buildNode(OSQLParseNode*& pAppend,OSQLParseNode* pCompare,OSQLParseNode* pLiteral,OSQLParseNode* pLiteral2);
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sal_Int16 buildComparsionRule(OSQLParseNode*& pAppend,OSQLParseNode* pLiteral);
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// pCompre will be deleted if it is not used
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sal_Int16 buildPredicateRule(OSQLParseNode*& pAppend,OSQLParseNode* const pLiteral,OSQLParseNode*const & pCompare,OSQLParseNode* pLiteral2 = NULL);
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sal_Int16 buildLikeRule(OSQLParseNode* const& pAppend,OSQLParseNode*& pLiteral,const OSQLParseNode* pEscape);
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sal_Int16 buildStringNodes(OSQLParseNode*& pLiteral);
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#else
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#endif
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};
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}
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#endif // INCLUDED_CONNECTIVITY_SQLPARSE_HXX
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/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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