/*****************************************************************************

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This program is free software; you can redistribute it and/or modify
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*****************************************************************************/

/**************************************************//**
@file include/eval0proc.h
Executes SQL stored procedures and their control structures

Created 1/20/1998 Heikki Tuuri
*******************************************************/

#ifndef eval0proc_h
#define eval0proc_h

#include "univ.i"
#include "que0types.h"
#include "pars0sym.h"
#include "pars0pars.h"

/**********************************************************************//**
Performs an execution step of a procedure node.
@return	query thread to run next or NULL */
UNIV_INLINE
que_thr_t*
proc_step(
/*======*/
	que_thr_t*	thr);	/*!< in: query thread */
/**********************************************************************//**
Performs an execution step of an if-statement node.
@return	query thread to run next or NULL */
UNIV_INTERN
que_thr_t*
if_step(
/*====*/
	que_thr_t*	thr);	/*!< in: query thread */
/**********************************************************************//**
Performs an execution step of a while-statement node.
@return	query thread to run next or NULL */
UNIV_INTERN
que_thr_t*
while_step(
/*=======*/
	que_thr_t*	thr);	/*!< in: query thread */
/**********************************************************************//**
Performs an execution step of a for-loop node.
@return	query thread to run next or NULL */
UNIV_INTERN
que_thr_t*
for_step(
/*=====*/
	que_thr_t*	thr);	/*!< in: query thread */
/**********************************************************************//**
Performs an execution step of an assignment statement node.
@return	query thread to run next or NULL */
UNIV_INTERN
que_thr_t*
assign_step(
/*========*/
	que_thr_t*	thr);	/*!< in: query thread */
/**********************************************************************//**
Performs an execution step of a procedure call node.
@return	query thread to run next or NULL */
UNIV_INLINE
que_thr_t*
proc_eval_step(
/*===========*/
	que_thr_t*	thr);	/*!< in: query thread */
/**********************************************************************//**
Performs an execution step of an exit statement node.
@return	query thread to run next or NULL */
UNIV_INTERN
que_thr_t*
exit_step(
/*======*/
	que_thr_t*	thr);	/*!< in: query thread */
/**********************************************************************//**
Performs an execution step of a return-statement node.
@return	query thread to run next or NULL */
UNIV_INTERN
que_thr_t*
return_step(
/*========*/
	que_thr_t*	thr);	/*!< in: query thread */


#ifndef UNIV_NONINL
#include "eval0proc.ic"
#endif

#endif
