Adding upstream version 16.2.upstream/16.2

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 247 insertions, 0 deletions

diff --git a/src/include/access/reloptions.h b/src/include/access/reloptions.h
new file mode 100644
index 0000000..1d5bfa6
--- /dev/null
+++ b/src/include/access/reloptions.h
@@ -0,0 +1,247 @@
+/*-------------------------------------------------------------------------
+ *
+ * reloptions.h
+ *	  Core support for relation and tablespace options (pg_class.reloptions
+ *	  and pg_tablespace.spcoptions)
+ *
+ * Note: the functions dealing with text-array reloptions values declare
+ * them as Datum, not ArrayType *, to avoid needing to include array.h
+ * into a lot of low-level code.
+ *
+ *
+ * Portions Copyright (c) 1996-2023, PostgreSQL Global Development Group
+ * Portions Copyright (c) 1994, Regents of the University of California
+ *
+ * src/include/access/reloptions.h
+ *
+ *-------------------------------------------------------------------------
+ */
+#ifndef RELOPTIONS_H
+#define RELOPTIONS_H
+
+#include "access/amapi.h"
+#include "access/htup.h"
+#include "access/tupdesc.h"
+#include "nodes/pg_list.h"
+#include "storage/lock.h"
+
+/* types supported by reloptions */
+typedef enum relopt_type
+{
+	RELOPT_TYPE_BOOL,
+	RELOPT_TYPE_INT,
+	RELOPT_TYPE_REAL,
+	RELOPT_TYPE_ENUM,
+	RELOPT_TYPE_STRING
+} relopt_type;
+
+/* kinds supported by reloptions */
+typedef enum relopt_kind
+{
+	RELOPT_KIND_LOCAL = 0,
+	RELOPT_KIND_HEAP = (1 << 0),
+	RELOPT_KIND_TOAST = (1 << 1),
+	RELOPT_KIND_BTREE = (1 << 2),
+	RELOPT_KIND_HASH = (1 << 3),
+	RELOPT_KIND_GIN = (1 << 4),
+	RELOPT_KIND_GIST = (1 << 5),
+	RELOPT_KIND_ATTRIBUTE = (1 << 6),
+	RELOPT_KIND_TABLESPACE = (1 << 7),
+	RELOPT_KIND_SPGIST = (1 << 8),
+	RELOPT_KIND_VIEW = (1 << 9),
+	RELOPT_KIND_BRIN = (1 << 10),
+	RELOPT_KIND_PARTITIONED = (1 << 11),
+	/* if you add a new kind, make sure you update "last_default" too */
+	RELOPT_KIND_LAST_DEFAULT = RELOPT_KIND_PARTITIONED,
+	/* some compilers treat enums as signed ints, so we can't use 1 << 31 */
+	RELOPT_KIND_MAX = (1 << 30)
+} relopt_kind;
+
+/* reloption namespaces allowed for heaps -- currently only TOAST */
+#define HEAP_RELOPT_NAMESPACES { "toast", NULL }
+
+/* generic struct to hold shared data */
+typedef struct relopt_gen
+{
+	const char *name;			/* must be first (used as list termination
+								 * marker) */
+	const char *desc;
+	bits32		kinds;
+	LOCKMODE	lockmode;
+	int			namelen;
+	relopt_type type;
+} relopt_gen;
+
+/* holds a parsed value */
+typedef struct relopt_value
+{
+	relopt_gen *gen;
+	bool		isset;
+	union
+	{
+		bool		bool_val;
+		int			int_val;
+		double		real_val;
+		int			enum_val;
+		char	   *string_val; /* allocated separately */
+	}			values;
+} relopt_value;
+
+/* reloptions records for specific variable types */
+typedef struct relopt_bool
+{
+	relopt_gen	gen;
+	bool		default_val;
+} relopt_bool;
+
+typedef struct relopt_int
+{
+	relopt_gen	gen;
+	int			default_val;
+	int			min;
+	int			max;
+} relopt_int;
+
+typedef struct relopt_real
+{
+	relopt_gen	gen;
+	double		default_val;
+	double		min;
+	double		max;
+} relopt_real;
+
+/*
+ * relopt_enum_elt_def -- One member of the array of acceptable values
+ * of an enum reloption.
+ */
+typedef struct relopt_enum_elt_def
+{
+	const char *string_val;
+	int			symbol_val;
+} relopt_enum_elt_def;
+
+typedef struct relopt_enum
+{
+	relopt_gen	gen;
+	relopt_enum_elt_def *members;
+	int			default_val;
+	const char *detailmsg;
+	/* null-terminated array of members */
+} relopt_enum;
+
+/* validation routines for strings */
+typedef void (*validate_string_relopt) (const char *value);
+typedef Size (*fill_string_relopt) (const char *value, void *ptr);
+
+/* validation routine for the whole option set */
+typedef void (*relopts_validator) (void *parsed_options, relopt_value *vals, int nvals);
+
+typedef struct relopt_string
+{
+	relopt_gen	gen;
+	int			default_len;
+	bool		default_isnull;
+	validate_string_relopt validate_cb;
+	fill_string_relopt fill_cb;
+	char	   *default_val;
+} relopt_string;
+
+/* This is the table datatype for build_reloptions() */
+typedef struct
+{
+	const char *optname;		/* option's name */
+	relopt_type opttype;		/* option's datatype */
+	int			offset;			/* offset of field in result struct */
+} relopt_parse_elt;
+
+/* Local reloption definition */
+typedef struct local_relopt
+{
+	relopt_gen *option;			/* option definition */
+	int			offset;			/* offset of parsed value in bytea structure */
+} local_relopt;
+
+/* Structure to hold local reloption data for build_local_reloptions() */
+typedef struct local_relopts
+{
+	List	   *options;		/* list of local_relopt definitions */
+	List	   *validators;		/* list of relopts_validator callbacks */
+	Size		relopt_struct_size; /* size of parsed bytea structure */
+} local_relopts;
+
+/*
+ * Utility macro to get a value for a string reloption once the options
+ * are parsed.  This gets a pointer to the string value itself.  "optstruct"
+ * is the StdRdOptions struct or equivalent, "member" is the struct member
+ * corresponding to the string option.
+ */
+#define GET_STRING_RELOPTION(optstruct, member) \
+	((optstruct)->member == 0 ? NULL : \
+	 (char *)(optstruct) + (optstruct)->member)
+
+extern relopt_kind add_reloption_kind(void);
+extern void add_bool_reloption(bits32 kinds, const char *name, const char *desc,
+							   bool default_val, LOCKMODE lockmode);
+extern void add_int_reloption(bits32 kinds, const char *name, const char *desc,
+							  int default_val, int min_val, int max_val,
+							  LOCKMODE lockmode);
+extern void add_real_reloption(bits32 kinds, const char *name, const char *desc,
+							   double default_val, double min_val, double max_val,
+							   LOCKMODE lockmode);
+extern void add_enum_reloption(bits32 kinds, const char *name, const char *desc,
+							   relopt_enum_elt_def *members, int default_val,
+							   const char *detailmsg, LOCKMODE lockmode);
+extern void add_string_reloption(bits32 kinds, const char *name, const char *desc,
+								 const char *default_val, validate_string_relopt validator,
+								 LOCKMODE lockmode);
+
+extern void init_local_reloptions(local_relopts *relopts, Size relopt_struct_size);
+extern void register_reloptions_validator(local_relopts *relopts,
+										  relopts_validator validator);
+extern void add_local_bool_reloption(local_relopts *relopts, const char *name,
+									 const char *desc, bool default_val,
+									 int offset);
+extern void add_local_int_reloption(local_relopts *relopts, const char *name,
+									const char *desc, int default_val,
+									int min_val, int max_val, int offset);
+extern void add_local_real_reloption(local_relopts *relopts, const char *name,
+									 const char *desc, double default_val,
+									 double min_val, double max_val,
+									 int offset);
+extern void add_local_enum_reloption(local_relopts *relopts,
+									 const char *name, const char *desc,
+									 relopt_enum_elt_def *members,
+									 int default_val, const char *detailmsg,
+									 int offset);
+extern void add_local_string_reloption(local_relopts *relopts, const char *name,
+									   const char *desc,
+									   const char *default_val,
+									   validate_string_relopt validator,
+									   fill_string_relopt filler, int offset);
+
+extern Datum transformRelOptions(Datum oldOptions, List *defList,
+								 const char *namspace, char *validnsps[],
+								 bool acceptOidsOff, bool isReset);
+extern List *untransformRelOptions(Datum options);
+extern bytea *extractRelOptions(HeapTuple tuple, TupleDesc tupdesc,
+								amoptions_function amoptions);
+extern void *build_reloptions(Datum reloptions, bool validate,
+							  relopt_kind kind,
+							  Size relopt_struct_size,
+							  const relopt_parse_elt *relopt_elems,
+							  int num_relopt_elems);
+extern void *build_local_reloptions(local_relopts *relopts, Datum options,
+									bool validate);
+
+extern bytea *default_reloptions(Datum reloptions, bool validate,
+								 relopt_kind kind);
+extern bytea *heap_reloptions(char relkind, Datum reloptions, bool validate);
+extern bytea *view_reloptions(Datum reloptions, bool validate);
+extern bytea *partitioned_table_reloptions(Datum reloptions, bool validate);
+extern bytea *index_reloptions(amoptions_function amoptions, Datum reloptions,
+							   bool validate);
+extern bytea *attribute_reloptions(Datum reloptions, bool validate);
+extern bytea *tablespace_reloptions(Datum reloptions, bool validate);
+extern LOCKMODE AlterTableGetRelOptionsLockLevel(List *defList);
+
+#endif							/* RELOPTIONS_H */