File indexing completed on 2024-12-08 04:17:08

 /* This file is part of the KDE project
    Copyright (C) 2003 Lucijan Busch <lucijan@kde.org>
    Copyright (C) 2004-2018 Jarosław Staniek <staniek@kde.org>
 
    This library is free software; you can redistribute it and/or
    modify it under the terms of the GNU Library General Public
    License as published by the Free Software Foundation; either
    version 2 of the License, or (at your option) any later version.
 
    This library is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
    Library General Public License for more details.
 
    You should have received a copy of the GNU Library General Public License
    along with this library; see the file COPYING.LIB.  If not, write to
    the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
  * Boston, MA 02110-1301, USA.
 */
 
 #include "KDbParser.h"
 #include "KDbParser_p.h"
 #include "generated/sqlparser.h"
 
 #include "KDbConnection.h"
 #include "KDbTableSchema.h"
 
 #include <vector>
 
 bool parseData();
 
 //! Cache
 class ParserStatic
 {
 public:
     ParserStatic()
      : statementTypeStrings({
             QLatin1String("None"),
             QLatin1String("Select"),
             QLatin1String("CreateTable"),
             QLatin1String("AlterTable"),
             QLatin1String("Insert"),
             QLatin1String("Update"),
             QLatin1String("Delete")})
     {
     }
     const std::vector<QString> statementTypeStrings;
 private:
     Q_DISABLE_COPY(ParserStatic)
 };
 
 Q_GLOBAL_STATIC(ParserStatic, KDb_parserStatic)
 
 KDbParser::KDbParser(KDbConnection *connection)
         : d(new KDbParserPrivate)
 {
     d->connection = connection;
 }
 
 KDbParser::~KDbParser()
 {
     delete d;
 }
 
 KDbParser::StatementType KDbParser::statementType() const
 {
     return d->statementType;
 }
 
 QString KDbParser::statementTypeString() const
 {
     Q_ASSERT(size_t(d->statementType) < sizeof(KDb_parserStatic->statementTypeStrings));
     return KDb_parserStatic->statementTypeStrings[d->statementType];
 }
 
 KDbTableSchema *KDbParser::table()
 {
     KDbTableSchema *t = d->table;
     d->table = nullptr;
     return t;
 }
 
 KDbQuerySchema *KDbParser::query()
 {
     KDbQuerySchema *s = d->query;
     d->query = nullptr;
     return s;
 }
 
 KDbConnection *KDbParser::connection()
 {
     return d->connection;
 }
 
 const KDbConnection *KDbParser::connection() const
 {
     return d->connection;
 }
 
 KDbParserError KDbParser::error() const
 {
     return d->error;
 }
 
 KDbEscapedString KDbParser::statement() const
 {
     return d->sql;
 }
 
 void KDbParser::init()
 {
     if (d->initialized)
         return;
     // nothing to do
     d->initialized = true;
 }
 
 bool KDbParser::parse(const KDbEscapedString &sql, KDbQuerySchema *query)
 {
     init();
     reset();
     d->sql = sql;
     d->query = query;
 
     KDbParser *oldParser = globalParser;
     KDbField *oldField = globalField;
     globalParser = this;
     globalField = nullptr;
     bool res = parseData();
     globalParser = oldParser;
     globalField = oldField;
     if (query) { // if existing query was supplied to parse() nullptr should be returned by query()
         d->query = nullptr;
     }
     return res;
 }
 
 void KDbParser::reset()
 {
     d->reset();
 }
 
 //-------------------------------------
 
 class Q_DECL_HIDDEN KDbParserError::Private
 {
 public:
     Private() {}
     Private(const Private &other) {
         copy(other);
     }
 #define KDbParserErrorPrivateArgs(o) std::tie(o.type, o.message, o.token, o.position)
     void copy(const Private &other) {
         KDbParserErrorPrivateArgs((*this)) = KDbParserErrorPrivateArgs(other);
     }
     bool operator==(const Private &other) const {
         return KDbParserErrorPrivateArgs((*this)) == KDbParserErrorPrivateArgs(other);
     }
     QString type;
     QString message;
     QByteArray token;
     int position = -1;
 };
 
 KDbParserError::KDbParserError()
     : d(new Private)
 {
 }
 
 KDbParserError::KDbParserError(const QString &type, const QString &message, const QByteArray &token,
                                int position)
     : d(new Private)
 {
     d->type = type;
     d->message = message;
     d->token = token;
     d->position = position;
 }
 
 KDbParserError::KDbParserError(const KDbParserError &other)
     : d(new Private(*other.d))
 {
     *d = *other.d;
 }
 
 KDbParserError::~KDbParserError()
 {
     delete d;
 }
 
 KDbParserError& KDbParserError::operator=(const KDbParserError &other)
 {
     if (this != &other) {
         d->copy(*other.d);
     }
     return *this;
 }
 
 bool KDbParserError::operator==(const KDbParserError &other) const
 {
     return *d == *other.d;
 }
 
 QString KDbParserError::type() const
 {
     return d->type;
 }
 
 QString KDbParserError::message() const
 {
     return d->message;
 }
 
 int KDbParserError::position() const
 {
     return d->position;
 }
 
 QDebug operator<<(QDebug dbg, const KDbParserError& error)
 {
     QDebugStateSaver saver(dbg);
     if (error.type().isEmpty() && error.message().isEmpty()) {
         dbg.space() << "KDb:KDbParserError: None";
     } else {
         dbg.space() << "KDb:KDbParserError: type=" << error.type() << "message=" << error.message()
                     << "pos=" << error.position() << ")";
     }
     return dbg.maybeSpace();
 }