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88 lines
2.4 KiB
C++
88 lines
2.4 KiB
C++
/*****************************************************************************
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Copyright (c) 1998, 2013, Oracle and/or its affiliates. All Rights Reserved.
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This program is free software; you can redistribute it and/or modify it under
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the terms of the GNU General Public License as published by the Free Software
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Foundation; version 2 of the License.
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This program is distributed in the hope that it will be useful, but WITHOUT
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ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
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FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.
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You should have received a copy of the GNU General Public License along with
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this program; if not, write to the Free Software Foundation, Inc.,
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51 Franklin Street, Fifth Floor, Boston, MA 02110-1335 USA
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*****************************************************************************/
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/**************************************************//**
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@file include/eval0proc.ic
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Executes SQL stored procedures and their control structures
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Created 1/20/1998 Heikki Tuuri
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*******************************************************/
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#include "pars0pars.h"
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#include "que0que.h"
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#include "eval0eval.h"
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/**********************************************************************//**
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Performs an execution step of a procedure node.
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@return query thread to run next or NULL */
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UNIV_INLINE
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que_thr_t*
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proc_step(
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/*======*/
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que_thr_t* thr) /*!< in: query thread */
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{
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proc_node_t* node;
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ut_ad(thr);
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node = static_cast<proc_node_t*>(thr->run_node);
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ut_ad(que_node_get_type(node) == QUE_NODE_PROC);
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if (thr->prev_node == que_node_get_parent(node)) {
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/* Start execution from the first statement in the statement
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list */
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thr->run_node = node->stat_list;
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} else {
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/* Move to the next statement */
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ut_ad(que_node_get_next(thr->prev_node) == NULL);
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thr->run_node = NULL;
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}
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if (thr->run_node == NULL) {
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thr->run_node = que_node_get_parent(node);
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}
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return(thr);
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}
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/**********************************************************************//**
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Performs an execution step of a procedure call node.
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@return query thread to run next or NULL */
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UNIV_INLINE
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que_thr_t*
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proc_eval_step(
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/*===========*/
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que_thr_t* thr) /*!< in: query thread */
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{
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func_node_t* node;
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ut_ad(thr);
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node = static_cast<func_node_t*>(thr->run_node);
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ut_ad(que_node_get_type(node) == QUE_NODE_FUNC);
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/* Evaluate the procedure */
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eval_exp(node);
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thr->run_node = que_node_get_parent(node);
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return(thr);
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}
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