ktraderparsetree.h
/* This file is part of the KDE project
Copyright (C) 1998, 1999 Torben Weis <weis@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.
*/
#ifndef __parse_tree_h__
#define __parse_tree_h__
#include <qstring.h>
#include <qstringlist.h>
#include <qvaluelist.h>
#include <qmap.h>
#include <qshared.h>
#include <kservice.h>
#include <kuserprofile.h>
#include "ktrader.h"
namespace KIO {
class ParseTreeBase;
struct KIO_EXPORT PreferencesReturn
{
enum Type { PRT_DOUBLE, PRT_ERROR };
PreferencesReturn() { type = PRT_ERROR; }
PreferencesReturn( const PreferencesReturn& _r )
{
type = _r.type;
f = _r.f;
}
Type type;
double f;
};
KIO_EXPORT int matchConstraint( const ParseTreeBase *_tree, const KService::Ptr &,
const KServiceTypeProfile::OfferList& );
KIO_EXPORT PreferencesReturn matchPreferences( const ParseTreeBase *_tree, const KService::Ptr &,
const KServiceTypeProfile::OfferList& );
struct KIO_EXPORT PreferencesMaxima
{
enum Type { PM_ERROR, PM_INVALID_INT, PM_INVALID_DOUBLE, PM_DOUBLE, PM_INT };
Type type;
int iMax;
int iMin;
double fMax;
double fMin;
};
class KIO_EXPORT ParseContext
{
public:
ParseContext( const ParseContext* _ctx ) : service( _ctx->service ), maxima( _ctx->maxima ),
offers( _ctx->offers ) {}
ParseContext( const KService::Ptr & _service, const KServiceTypeProfile::OfferList& _offers,
QMap<QString,PreferencesMaxima>& _m )
: service( _service ), maxima( _m ), offers( _offers ) {}
bool initMaxima( const QString& _prop);
enum Type { T_STRING = 1, T_DOUBLE = 2, T_NUM = 3, T_BOOL = 4,
T_STR_SEQ = 5, T_SEQ = 6 };
QString str;
int i;
double f;
bool b;
QValueList<QVariant> seq;
QStringList strSeq;
Type type;
KService::Ptr service;
QMap<QString,PreferencesMaxima>& maxima;
const KServiceTypeProfile::OfferList& offers;
};
class KIO_EXPORT ParseTreeBase : public KShared
{
public:
typedef KSharedPtr<ParseTreeBase> Ptr;
ParseTreeBase() { }
virtual bool eval( ParseContext *_context ) const = 0;
protected:
virtual ~ParseTreeBase() { };
};
KIO_EXPORT ParseTreeBase::Ptr parseConstraints( const QString& _constr );
KIO_EXPORT ParseTreeBase::Ptr parsePreferences( const QString& _prefs );
class KIO_EXPORT ParseTreeOR : public ParseTreeBase
{
public:
ParseTreeOR( ParseTreeBase *_ptr1, ParseTreeBase *_ptr2 ) { m_pLeft = _ptr1; m_pRight = _ptr2; }
bool eval( ParseContext *_context ) const;
protected:
ParseTreeBase::Ptr m_pLeft;
ParseTreeBase::Ptr m_pRight;
};
class KIO_EXPORT ParseTreeAND : public ParseTreeBase
{
public:
ParseTreeAND( ParseTreeBase *_ptr1, ParseTreeBase *_ptr2 ) { m_pLeft = _ptr1; m_pRight = _ptr2; }
bool eval( ParseContext *_context ) const;
protected:
ParseTreeBase::Ptr m_pLeft;
ParseTreeBase::Ptr m_pRight;
};
class KIO_EXPORT ParseTreeCMP : public ParseTreeBase
{
public:
ParseTreeCMP( ParseTreeBase *_ptr1, ParseTreeBase *_ptr2, int _i ) { m_pLeft = _ptr1; m_pRight = _ptr2; m_cmd = _i; }
bool eval( ParseContext *_context ) const;
protected:
ParseTreeBase::Ptr m_pLeft;
ParseTreeBase::Ptr m_pRight;
int m_cmd;
};
class KIO_EXPORT ParseTreeIN : public ParseTreeBase
{
public:
ParseTreeIN( ParseTreeBase *_ptr1, ParseTreeBase *_ptr2 ) { m_pLeft = _ptr1; m_pRight = _ptr2; }
bool eval( ParseContext *_context ) const;
protected:
ParseTreeBase::Ptr m_pLeft;
ParseTreeBase::Ptr m_pRight;
};
class KIO_EXPORT ParseTreeMATCH : public ParseTreeBase
{
public:
ParseTreeMATCH( ParseTreeBase *_ptr1, ParseTreeBase *_ptr2 ) { m_pLeft = _ptr1; m_pRight = _ptr2; }
bool eval( ParseContext *_context ) const;
protected:
ParseTreeBase::Ptr m_pLeft;
ParseTreeBase::Ptr m_pRight;
};
class KIO_EXPORT ParseTreeCALC : public ParseTreeBase
{
public:
ParseTreeCALC( ParseTreeBase *_ptr1, ParseTreeBase *_ptr2, int _i ) { m_pLeft = _ptr1; m_pRight = _ptr2; m_cmd = _i; }
bool eval( ParseContext *_context ) const;
protected:
ParseTreeBase::Ptr m_pLeft;
ParseTreeBase::Ptr m_pRight;
int m_cmd;
};
class KIO_EXPORT ParseTreeBRACKETS : public ParseTreeBase
{
public:
ParseTreeBRACKETS( ParseTreeBase *_ptr ) { m_pLeft = _ptr; }
bool eval( ParseContext *_context ) const { return m_pLeft->eval( _context ); }
protected:
ParseTreeBase::Ptr m_pLeft;
};
class KIO_EXPORT ParseTreeNOT : public ParseTreeBase
{
public:
ParseTreeNOT( ParseTreeBase *_ptr ) { m_pLeft = _ptr; }
bool eval( ParseContext *_context ) const;
protected:
ParseTreeBase::Ptr m_pLeft;
};
class KIO_EXPORT ParseTreeEXIST : public ParseTreeBase
{
public:
ParseTreeEXIST( const char *_id ) { m_id = _id; }
bool eval( ParseContext *_context ) const;
protected:
QString m_id;
};
class KIO_EXPORT ParseTreeID : public ParseTreeBase
{
public:
ParseTreeID( const char *arg ) { m_str = arg; }
bool eval( ParseContext *_context ) const;
protected:
QString m_str;
};
class KIO_EXPORT ParseTreeSTRING : public ParseTreeBase
{
public:
ParseTreeSTRING( const char *arg ) { m_str = arg; }
bool eval( ParseContext *_context ) const { _context->type = ParseContext::T_STRING; _context->str = m_str; return true; }
protected:
QString m_str;
};
class KIO_EXPORT ParseTreeNUM : public ParseTreeBase
{
public:
ParseTreeNUM( int arg ) { m_int = arg; }
bool eval( ParseContext *_context ) const { _context->type = ParseContext::T_NUM; _context->i = m_int; return true; }
protected:
int m_int;
};
class KIO_EXPORT ParseTreeDOUBLE : public ParseTreeBase
{
public:
ParseTreeDOUBLE( double arg ) { m_double = arg; }
bool eval( ParseContext *_context ) const { _context->type = ParseContext::T_DOUBLE; _context->f = m_double; return true; }
protected:
double m_double;
};
class KIO_EXPORT ParseTreeBOOL : public ParseTreeBase
{
public:
ParseTreeBOOL( bool arg ) { m_bool = arg; }
bool eval( ParseContext *_context ) const { _context->type = ParseContext::T_BOOL; _context->b = m_bool; return true; }
protected:
bool m_bool;
};
class KIO_EXPORT ParseTreeMAX2 : public ParseTreeBase
{
public:
ParseTreeMAX2( const char *_id ) { m_strId = _id; }
bool eval( ParseContext *_context ) const;
protected:
QString m_strId;
};
class KIO_EXPORT ParseTreeMIN2 : public ParseTreeBase
{
public:
ParseTreeMIN2( const char *_id ) { m_strId = _id; }
bool eval( ParseContext *_context ) const;
protected:
QString m_strId;
};
}
#endif

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