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+/******************************************************
+Executes SQL stored procedures and their control structures
+
+(c) 1998 Innobase Oy
+
+Created 1/20/1998 Heikki Tuuri
+*******************************************************/
+
+#include "pars0pars.h"
+#include "que0que.h"
+#include "eval0eval.h"
+
+/**************************************************************************
+Performs an execution step of a procedure node. */
+UNIV_INLINE
+que_thr_t*
+proc_step(
+/*======*/
+ /* out: query thread to run next or NULL */
+ que_thr_t* thr) /* in: query thread */
+{
+ proc_node_t* node;
+
+ ut_ad(thr);
+
+ node = thr->run_node;
+ ut_ad(que_node_get_type(node) == QUE_NODE_PROC);
+
+ if (thr->prev_node == que_node_get_parent(node)) {
+ /* Start execution from the first statement in the statement
+ list */
+
+ thr->run_node = node->stat_list;
+ } else {
+ /* Move to the next statement */
+ ut_ad(que_node_get_next(thr->prev_node) == NULL);
+
+ thr->run_node = NULL;
+ }
+
+ if (thr->run_node == NULL) {
+ thr->run_node = que_node_get_parent(node);
+ }
+
+ return(thr);
+}
+
+/**************************************************************************
+Performs an execution step of a procedure call node. */
+UNIV_INLINE
+que_thr_t*
+proc_eval_step(
+/*===========*/
+ /* out: query thread to run next or NULL */
+ que_thr_t* thr) /* in: query thread */
+{
+ func_node_t* node;
+
+ ut_ad(thr);
+
+ node = thr->run_node;
+ ut_ad(que_node_get_type(node) == QUE_NODE_FUNC);
+
+ /* Evaluate the procedure */
+
+ eval_exp(node);
+
+ thr->run_node = que_node_get_parent(node);
+
+ return(thr);
+}