88 lines
2.6 KiB
Plaintext
88 lines
2.6 KiB
Plaintext
/*****************************************************************************
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Copyright (c) 1998, 2018, 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, version 2.0, as published by the
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Free Software Foundation.
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This program is also distributed with certain software (including but not
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limited to OpenSSL) that is licensed under separate terms, as designated in a
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particular file or component or in included license documentation. The authors
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of MySQL hereby grant you an additional permission to link the program and
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your derivative works with the separately licensed software that they have
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included with MySQL.
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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, version 2.0,
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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 St, Fifth Floor, Boston, MA 02110-1301 USA
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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 "eval0eval.h"
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#include "pars0pars.h"
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#include "que0que.h"
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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 *proc_step(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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/** 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 *proc_eval_step(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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