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/*
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* R : A Computer Language for Statistical Data Analysis
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* Copyright (C) 2001-2026 The R Core Team.
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*
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* This header file is free software; you can redistribute it and/or modify
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* it under the terms of the GNU Lesser General Public License as published by
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* the Free Software Foundation; either version 2.1 of the License, or
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* (at your option) any later version.
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*
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* This file is part of R. R is distributed under the terms of the
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* GNU General Public License, either Version 2, June 1991 or Version 3,
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* June 2007. See doc/COPYRIGHTS for details of the copyright status of R.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public License
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* along with this program; if not, a copy is available at
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* https://www.R-project.org/Licenses/
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*/
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/*
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Part of the experimental API, subject to change at any time.
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*/
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#ifndef R_OBJECTTABLE_H
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#define R_OBJECTTABLE_H
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#include <Rinternals.h>
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#ifdef __cplusplus
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extern "C" {
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#endif
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/*
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The following definitions are for callbacks to R functions and
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methods related to user-level tables. This was implemented in a
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separate package formerly available from Omegahat and these
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declarations allow the package to interface to the internal R code.
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See https://developer.r-project.org/RObjectTables.pdf.
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*/
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typedef struct _R_ObjectTable R_ObjectTable;
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/* Do we actually need the exists() since it is never called but R
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uses get to see if the symbol is bound to anything? */
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typedef Rboolean (*Rdb_exists)(const char * const name, Rboolean *canCache, R_ObjectTable *);
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typedef SEXP (*Rdb_get)(const char * const name, Rboolean *canCache, R_ObjectTable *);
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typedef int (*Rdb_remove)(const char * const name, R_ObjectTable *);
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typedef SEXP (*Rdb_assign)(const char * const name, SEXP value, R_ObjectTable *);
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typedef SEXP (*Rdb_objects)(R_ObjectTable *);
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typedef Rboolean (*Rdb_canCache)(const char * const name, R_ObjectTable *);
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typedef void (*Rdb_onDetach)(R_ObjectTable *);
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typedef void (*Rdb_onAttach)(R_ObjectTable *);
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struct _R_ObjectTable{
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int type;
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char **cachedNames;
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Rboolean active;
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Rdb_exists exists;
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Rdb_get get;
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Rdb_remove remove;
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Rdb_assign assign;
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Rdb_objects objects;
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Rdb_canCache canCache;
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Rdb_onDetach onDetach;
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Rdb_onAttach onAttach;
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void *privateData;
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};
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#ifdef __cplusplus
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}
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#endif
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#endif /* R_OBJECTTABLE_H */
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