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-rw-r--r--src/include/executor/functions.h55
1 files changed, 55 insertions, 0 deletions
diff --git a/src/include/executor/functions.h b/src/include/executor/functions.h
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+/*-------------------------------------------------------------------------
+ *
+ * functions.h
+ * Declarations for execution of SQL-language functions.
+ *
+ *
+ * Portions Copyright (c) 1996-2022, PostgreSQL Global Development Group
+ * Portions Copyright (c) 1994, Regents of the University of California
+ *
+ * src/include/executor/functions.h
+ *
+ *-------------------------------------------------------------------------
+ */
+#ifndef FUNCTIONS_H
+#define FUNCTIONS_H
+
+#include "nodes/execnodes.h"
+#include "tcop/dest.h"
+
+/*
+ * Data structure needed by the parser callback hooks to resolve parameter
+ * references during parsing of a SQL function's body. This is separate from
+ * SQLFunctionCache since we sometimes do parsing separately from execution.
+ */
+typedef struct SQLFunctionParseInfo
+{
+ char *fname; /* function's name */
+ int nargs; /* number of input arguments */
+ Oid *argtypes; /* resolved types of input arguments */
+ char **argnames; /* names of input arguments; NULL if none */
+ /* Note that argnames[i] can be NULL, if some args are unnamed */
+ Oid collation; /* function's input collation, if known */
+} SQLFunctionParseInfo;
+
+typedef SQLFunctionParseInfo *SQLFunctionParseInfoPtr;
+
+extern Datum fmgr_sql(PG_FUNCTION_ARGS);
+
+extern SQLFunctionParseInfoPtr prepare_sql_fn_parse_info(HeapTuple procedureTuple,
+ Node *call_expr,
+ Oid inputCollation);
+
+extern void sql_fn_parser_setup(struct ParseState *pstate,
+ SQLFunctionParseInfoPtr pinfo);
+
+extern void check_sql_fn_statements(List *queryTreeLists);
+
+extern bool check_sql_fn_retval(List *queryTreeLists,
+ Oid rettype, TupleDesc rettupdesc,
+ bool insertDroppedCols,
+ List **resultTargetList);
+
+extern DestReceiver *CreateSQLFunctionDestReceiver(void);
+
+#endif /* FUNCTIONS_H */