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1 : /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
2 : /*
3 : * This file is part of the LibreOffice project.
4 : *
5 : * This Source Code Form is subject to the terms of the Mozilla Public
6 : * License, v. 2.0. If a copy of the MPL was not distributed with this
7 : * file, You can obtain one at http://mozilla.org/MPL/2.0/.
8 : *
9 : * This file incorporates work covered by the following license notice:
10 : *
11 : * Licensed to the Apache Software Foundation (ASF) under one or more
12 : * contributor license agreements. See the NOTICE file distributed
13 : * with this work for additional information regarding copyright
14 : * ownership. The ASF licenses this file to you under the Apache
15 : * License, Version 2.0 (the "License"); you may not use this file
16 : * except in compliance with the License. You may obtain a copy of
17 : * the License at http://www.apache.org/licenses/LICENSE-2.0 .
18 : */
19 : #ifndef _CONNECTIVITY_SQLPARSE_HXX
20 : #define _CONNECTIVITY_SQLPARSE_HXX
21 :
22 : #include <com/sun/star/uno/Reference.h>
23 : #include <osl/mutex.hxx>
24 : #include <connectivity/sqlnode.hxx>
25 : #ifndef DISABLE_DBCONNECTIVITY
26 : #ifndef YYBISON
27 : #ifndef FLEX_SCANNER
28 : #ifndef BISON_INCLUDED
29 : #define BISON_INCLUDED
30 : #include "sqlbison.hxx"
31 : #endif
32 : #endif
33 : #endif
34 : #endif
35 : #include <com/sun/star/i18n/XCharacterClassification.hpp>
36 : #include <com/sun/star/lang/XMultiServiceFactory.hpp>
37 : #include <com/sun/star/i18n/XLocaleData4.hpp>
38 : #include "connectivity/IParseContext.hxx"
39 : #include "connectivity/dbtoolsdllapi.hxx"
40 : #include "connectivity/sqlerror.hxx"
41 : #include <salhelper/singletonref.hxx>
42 :
43 : #include <map>
44 :
45 : // forward declarations
46 : namespace com
47 : {
48 : namespace sun
49 : {
50 : namespace star
51 : {
52 : namespace beans
53 : {
54 : class XPropertySet;
55 : }
56 : namespace util
57 : {
58 : class XNumberFormatter;
59 : }
60 : namespace lang
61 : {
62 : struct Locale;
63 : }
64 : }
65 : }
66 : }
67 : namespace connectivity
68 : {
69 : class OSQLScanner;
70 : class SQLError;
71 :
72 : //==========================================================================
73 : //= OParseContext
74 : //==========================================================================
75 : class OOO_DLLPUBLIC_DBTOOLS OParseContext : public IParseContext
76 : {
77 : public:
78 : OParseContext();
79 :
80 : virtual ~OParseContext();
81 : // retrieves language specific error messages
82 : virtual ::rtl::OUString getErrorMessage(ErrorCode _eCodes) const;
83 :
84 : // retrieves language specific keyword strings (only ASCII allowed)
85 : virtual ::rtl::OString getIntlKeywordAscii(InternationalKeyCode _eKey) const;
86 :
87 : // finds out, if we have an international keyword (only ASCII allowed)
88 : virtual InternationalKeyCode getIntlKeyCode(const ::rtl::OString& rToken) const;
89 :
90 : // determines the default international setting
91 : static const ::com::sun::star::lang::Locale& getDefaultLocale();
92 :
93 : /** get's a locale instance which should be used when parsing in the context specified by this instance
94 : <p>if this is not overridden by derived classes, it returns the static default locale.</p>
95 : */
96 : virtual ::com::sun::star::lang::Locale getPreferredLocale( ) const;
97 : };
98 :
99 : //==========================================================================
100 : // OSQLParseNodesContainer
101 : // grabage collection of nodes
102 : //==========================================================================
103 : class OSQLParseNodesContainer
104 : {
105 : ::osl::Mutex m_aMutex;
106 : ::std::vector< OSQLParseNode* > m_aNodes;
107 : public:
108 : OSQLParseNodesContainer();
109 : ~OSQLParseNodesContainer();
110 :
111 : void push_back(OSQLParseNode* _pNode);
112 : void erase(OSQLParseNode* _pNode);
113 : void clear();
114 : void clearAndDelete();
115 : };
116 :
117 : typedef salhelper::SingletonRef<OSQLParseNodesContainer> OSQLParseNodesGarbageCollector;
118 :
119 : //==========================================================================
120 : //= OSQLParser
121 : //==========================================================================
122 0 : struct OSQLParser_Data
123 : {
124 : ::com::sun::star::lang::Locale aLocale;
125 : ::connectivity::SQLError aErrors;
126 :
127 4 : OSQLParser_Data( const ::com::sun::star::uno::Reference< ::com::sun::star::uno::XComponentContext >& _rxContext )
128 4 : :aErrors( _rxContext )
129 : {
130 4 : }
131 : };
132 :
133 : /** Parser for SQL92
134 : */
135 : class OOO_DLLPUBLIC_DBTOOLS OSQLParser
136 : {
137 : friend class OSQLParseNode;
138 : friend class OSQLInternalNode;
139 : friend struct SQLParseNodeParameter;
140 :
141 : private:
142 : typedef ::std::map< sal_uInt32, OSQLParseNode::Rule > RuleIDMap;
143 : // static parts for parsers
144 : static sal_uInt32 s_nRuleIDs[OSQLParseNode::rule_count + 1];
145 : static RuleIDMap s_aReverseRuleIDLookup;
146 : static OParseContext s_aDefaultContext;
147 :
148 : static OSQLScanner* s_pScanner;
149 : static OSQLParseNodesGarbageCollector* s_pGarbageCollector;
150 : static sal_Int32 s_nRefCount;
151 :
152 : // informations on the current parse action
153 : const IParseContext* m_pContext;
154 : OSQLParseNode* m_pParseTree; // result from parsing
155 : ::std::auto_ptr< OSQLParser_Data >
156 : m_pData;
157 : ::rtl::OUString m_sFieldName; // current field name for a predicate
158 : ::rtl::OUString m_sErrorMessage;// current error msg
159 :
160 : ::com::sun::star::uno::Reference< ::com::sun::star::beans::XPropertySet >
161 : m_xField; // current field
162 : ::com::sun::star::uno::Reference< ::com::sun::star::util::XNumberFormatter >
163 : m_xFormatter; // current number formatter
164 : sal_Int32 m_nFormatKey; // numberformat, which should be used
165 : sal_Int32 m_nDateFormatKey;
166 : ::com::sun::star::uno::Reference< ::com::sun::star::uno::XComponentContext > m_xContext;
167 : ::com::sun::star::uno::Reference< ::com::sun::star::i18n::XCharacterClassification> m_xCharClass;
168 : static ::com::sun::star::uno::Reference< ::com::sun::star::i18n::XLocaleData4> s_xLocaleData;
169 : ::com::sun::star::uno::Reference< ::com::sun::star::i18n::XLocaleData> xDummy; // can be deleted after 627
170 :
171 : // convert a string into double trim it to scale of _nscale and than transform it back to string
172 : ::rtl::OUString stringToDouble(const ::rtl::OUString& _rValue,sal_Int16 _nScale);
173 : OSQLParseNode* buildDate(sal_Int32 _nType,OSQLParseNode*& pLiteral);
174 : bool extractDate(OSQLParseNode* pLiteral,double& _rfValue);
175 : void killThousandSeparator(OSQLParseNode* pLiteral);
176 : OSQLParseNode* convertNode(sal_Int32 nType,OSQLParseNode*& pLiteral);
177 : // makes a string out of a number, pLiteral will be deleted
178 : OSQLParseNode* buildNode_STR_NUM(OSQLParseNode*& pLiteral);
179 : OSQLParseNode* buildNode_Date(const double& fValue, sal_Int32 nType);
180 :
181 : static ::osl::Mutex& getMutex();
182 :
183 : public:
184 : // if NULL, a default context will be used
185 : // the context must live as long as the parser
186 : OSQLParser(const ::com::sun::star::uno::Reference< ::com::sun::star::uno::XComponentContext >& rxContext, const IParseContext* _pContext = NULL);
187 : ~OSQLParser();
188 :
189 : // Parsing an SQLStatement
190 : OSQLParseNode* parseTree(::rtl::OUString& rErrorMessage,
191 : const ::rtl::OUString& rStatement,
192 : sal_Bool bInternational = sal_False);
193 :
194 : // Check a Predicate
195 : OSQLParseNode* predicateTree(::rtl::OUString& rErrorMessage, const ::rtl::OUString& rStatement,
196 : const ::com::sun::star::uno::Reference< ::com::sun::star::util::XNumberFormatter > & xFormatter,
197 : const ::com::sun::star::uno::Reference< ::com::sun::star::beans::XPropertySet > & xField);
198 :
199 : // Access to the context
200 0 : const IParseContext& getContext() const {return *m_pContext;}
201 :
202 : /// access to the SQLError instance owned by this parser
203 : const SQLError& getErrorHelper() const;
204 :
205 : // TokenIDToStr: token name belonging to a token number.
206 : static ::rtl::OString TokenIDToStr(sal_uInt32 nTokenID, const IParseContext* pContext = NULL);
207 :
208 : #if OSL_DEBUG_LEVEL > 1
209 : // (empty string if not found)
210 : static ::rtl::OUString RuleIDToStr(sal_uInt32 nRuleID);
211 : #endif
212 :
213 : // StrToRuleID calculates the RuleID for a ::rtl::OUString (that is, ::com::sun::star::sdbcx::Index in yytname)
214 : // (0 if not found). The search for an ID based on a String is
215 : // extremely inefficient (sequential search for ::rtl::OUString)!
216 : static sal_uInt32 StrToRuleID(const ::rtl::OString & rValue);
217 :
218 : static OSQLParseNode::Rule RuleIDToRule( sal_uInt32 _nRule );
219 :
220 : // RuleId with enum, far more efficient
221 : static sal_uInt32 RuleID(OSQLParseNode::Rule eRule);
222 : // compares the _sFunctionName with all known function names and return the DataType of the return value
223 : static sal_Int32 getFunctionReturnType(const ::rtl::OUString& _sFunctionName, const IParseContext* pContext = NULL);
224 :
225 : // returns the type for a parameter in a given function name
226 : static sal_Int32 getFunctionParameterType(sal_uInt32 _nTokenId,sal_uInt32 _nPos);
227 :
228 : void error(const sal_Char *fmt);
229 : int SQLlex();
230 : #ifdef YYBISON
231 : void setParseTree(OSQLParseNode * pNewParseTree);
232 :
233 : // Is the parse in a special mode?
234 : // Predicate chack is used to check a condition for a field
235 0 : sal_Bool inPredicateCheck() const {return m_xField.is();}
236 0 : const ::rtl::OUString& getFieldName() const {return m_sFieldName;}
237 :
238 : void reduceLiteral(OSQLParseNode*& pLiteral, sal_Bool bAppendBlank);
239 : // does not change the pLiteral argument
240 : sal_Int16 buildNode(OSQLParseNode*& pAppend,OSQLParseNode* pCompare,OSQLParseNode* pLiteral,OSQLParseNode* pLiteral2);
241 :
242 : sal_Int16 buildComparsionRule(OSQLParseNode*& pAppend,OSQLParseNode* pLiteral);
243 : // pCompre will be deleted if it is not used
244 : sal_Int16 buildPredicateRule(OSQLParseNode*& pAppend,OSQLParseNode* pLiteral,OSQLParseNode*& pCompare,OSQLParseNode* pLiteral2 = NULL);
245 :
246 : sal_Int16 buildLikeRule(OSQLParseNode*& pAppend,OSQLParseNode*& pLiteral,const OSQLParseNode* pEscape);
247 : sal_Int16 buildStringNodes(OSQLParseNode*& pLiteral);
248 : #else
249 : #endif
250 : };
251 : }
252 :
253 :
254 : #endif //_CONNECTIVITY_SQLPARSE_HXX
255 :
256 : /* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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