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/****************************************************************************
**
** This file is part of GAP, a system for computational discrete algebra.
**
** Copyright of GAP belongs to its developers, whose names are too numerous
** to list here. Please refer to the COPYRIGHT file for details.
**
** SPDX-License-Identifier: GPL-2.0-or-later
**
** This file declares the functions of the function interpreter package.
**
** The function interpreter package contains the executors for procedure
** calls, the evaluators for function calls, the evaluator for function
** expressions, and the handlers for the execution of function bodies.
*/
#ifndef GAP_FUNCS_H
#define GAP_FUNCS_H
#include "common.h"
/****************************************************************************
**
*F MakeFunction(<fexp>) . . . . . . . . . . . . . . . . . . make a function
**
** 'MakeFunction' makes a function from the function expression bag <fexp>.
*/
Obj MakeFunction(Obj fexp);
/****************************************************************************
**
** Functions for tracking the recursion depth, and detecting if it exceeds
** some threshold. This is used to abort recursion beyond a certain depth,
** to protect against stack overflows and the resulting crashes.
*/
Int IncRecursionDepth(void);
void DecRecursionDepth(void);
Int GetRecursionDepth(void);
void SetRecursionDepth(Int depth);
extern UInt RecursionTrapInterval;
void RecursionDepthTrap(void);
EXPORT_INLINE void CheckRecursionBefore( void )
{
Int depth = IncRecursionDepth();
if ( RecursionTrapInterval &&
0 == (depth % RecursionTrapInterval) )
RecursionDepthTrap();
}
/****************************************************************************
**
*F * * * * * * * * * * * * * initialize module * * * * * * * * * * * * * * *
*/
/****************************************************************************
**
*F InitInfoFuncs() . . . . . . . . . . . . . . . . . table of init functions
*/
StructInitInfo * InitInfoFuncs ( void );
#endif // GAP_FUNCS_H
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