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74 lines
2.2 KiB
C++
74 lines
2.2 KiB
C++
/*
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* PROGRAM: JRD System Functions
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* MODULE: SysFunctions.h
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* DESCRIPTION: System Functions
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*
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* The contents of this file are subject to the Initial
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* Developer's Public License Version 1.0 (the "License");
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* you may not use this file except in compliance with the
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* License. You may obtain a copy of the License at
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* http://www.ibphoenix.com/main.nfs?a=ibphoenix&page=ibp_idpl.
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*
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* Software distributed under the License is distributed AS IS,
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* WITHOUT WARRANTY OF ANY KIND, either express or implied.
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* See the License for the specific language governing rights
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* and limitations under the License.
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*
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* The Original Code was created by Adriano dos Santos Fernandes
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* for the Firebird Open Source RDBMS project, based on work done
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* in Yaffil by Oleg Loa <loa@mail.ru> and Alexey Karyakin <aleksey.karyakin@mail.ru>
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*
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* Copyright (c) 2007 Adriano dos Santos Fernandes <adrianosf@uol.com.br>
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* and all contributors signed below.
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*
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* All Rights Reserved.
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* Contributor(s): ______________________________________.
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* Oleg Loa <loa@mail.ru>
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* Alexey Karyakin <aleksey.karyakin@mail.ru>
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*
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*/
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#ifndef JRD_SYSFUNCTION_H
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#define JRD_SYSFUNCTION_H
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#include "../common/classes/MetaName.h"
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#include "../jrd/DataTypeUtil.h"
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#include "../jrd/dsc.h"
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namespace Jrd
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{
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class thread_db;
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class jrd_nod;
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struct impure_value;
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}
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class SysFunction
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{
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public:
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typedef void (*SetParamsFunc)(DataTypeUtilBase* dataTypeUtil, const SysFunction* function, int, dsc**);
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typedef void (*MakeFunc)(DataTypeUtilBase* dataTypeUtil, const SysFunction* function, dsc*, int, const dsc**);
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typedef dsc* (*EvlFunc)(Jrd::thread_db*, const SysFunction* function, Jrd::jrd_nod*, Jrd::impure_value*);
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const Firebird::MetaName name;
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int minArgCount;
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int maxArgCount; // -1 for no limit
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SetParamsFunc setParamsFunc;
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MakeFunc makeFunc;
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EvlFunc evlFunc;
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void* misc;
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static const SysFunction* lookup(const Firebird::MetaName& name);
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static dsc* substring(Jrd::thread_db* tdbb, Jrd::impure_value* impure,
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dsc* value, const dsc* offset_value, const dsc* length_value);
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void checkArgsMismatch(int count) const;
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private:
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const static SysFunction functions[];
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};
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#endif // JRD_SYSFUNCTION_H
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