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3691edfab9
We want to support a "noreturn" decoration on more compilers besides
just GCC-compatible ones, but for that we need to move the decoration
in front of the function declaration instead of either behind it or
wherever, which is the current style afforded by GCC-style attributes.
Also rename the macro to "pg_noreturn" to be similar to the C11
standard "noreturn".
pg_noreturn is now supported on all compilers that support C11 (using
_Noreturn), as well as GCC-compatible ones (using __attribute__, as
before), as well as MSVC (using __declspec). (When PostgreSQL
requires C11, the latter two variants can be dropped.)
Now, all supported compilers effectively support pg_noreturn, so the
extra code for !HAVE_PG_ATTRIBUTE_NORETURN can be dropped.
This also fixes a possible problem if third-party code includes
stdnoreturn.h, because then the current definition of
#define pg_attribute_noreturn() __attribute__((noreturn))
would cause an error.
Note that the C standard does not support a noreturn attribute on
function pointer types. So we have to drop these here. There are
only two instances at this time, so it's not a big loss. In one case,
we can make up for it by adding the pg_noreturn to a wrapper function
and adding a pg_unreachable(), in the other case, the latter was
already done before.
Reviewed-by: Dagfinn Ilmari Mannsåker <ilmari@ilmari.org>
Reviewed-by: Andres Freund <andres@anarazel.de>
Discussion: https://www.postgresql.org/message-id/flat/pxr5b3z7jmkpenssra5zroxi7qzzp6eswuggokw64axmdixpnk@zbwxuq7gbbcw
132 lines
5.4 KiB
C
132 lines
5.4 KiB
C
/*-------------------------------------------------------------------------
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*
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* parse_relation.h
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* prototypes for parse_relation.c.
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*
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*
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* Portions Copyright (c) 1996-2025, PostgreSQL Global Development Group
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* Portions Copyright (c) 1994, Regents of the University of California
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*
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* src/include/parser/parse_relation.h
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*
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*-------------------------------------------------------------------------
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*/
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#ifndef PARSE_RELATION_H
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#define PARSE_RELATION_H
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#include "parser/parse_node.h"
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extern ParseNamespaceItem *refnameNamespaceItem(ParseState *pstate,
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const char *schemaname,
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const char *refname,
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int location,
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int *sublevels_up);
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extern CommonTableExpr *scanNameSpaceForCTE(ParseState *pstate,
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const char *refname,
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Index *ctelevelsup);
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extern bool scanNameSpaceForENR(ParseState *pstate, const char *refname);
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extern void checkNameSpaceConflicts(ParseState *pstate, List *namespace1,
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List *namespace2);
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extern ParseNamespaceItem *GetNSItemByRangeTablePosn(ParseState *pstate,
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int varno,
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int sublevels_up);
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extern RangeTblEntry *GetRTEByRangeTablePosn(ParseState *pstate,
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int varno,
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int sublevels_up);
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extern CommonTableExpr *GetCTEForRTE(ParseState *pstate, RangeTblEntry *rte,
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int rtelevelsup);
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extern Node *scanNSItemForColumn(ParseState *pstate, ParseNamespaceItem *nsitem,
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int sublevels_up, const char *colname,
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int location);
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extern Node *colNameToVar(ParseState *pstate, const char *colname, bool localonly,
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int location);
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extern void markNullableIfNeeded(ParseState *pstate, Var *var);
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extern void markVarForSelectPriv(ParseState *pstate, Var *var);
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extern Relation parserOpenTable(ParseState *pstate, const RangeVar *relation,
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int lockmode);
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extern ParseNamespaceItem *addRangeTableEntry(ParseState *pstate,
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RangeVar *relation,
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Alias *alias,
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bool inh,
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bool inFromCl);
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extern ParseNamespaceItem *addRangeTableEntryForRelation(ParseState *pstate,
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Relation rel,
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int lockmode,
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Alias *alias,
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bool inh,
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bool inFromCl);
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extern ParseNamespaceItem *addRangeTableEntryForSubquery(ParseState *pstate,
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Query *subquery,
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Alias *alias,
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bool lateral,
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bool inFromCl);
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extern ParseNamespaceItem *addRangeTableEntryForFunction(ParseState *pstate,
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List *funcnames,
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List *funcexprs,
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List *coldeflists,
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RangeFunction *rangefunc,
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bool lateral,
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bool inFromCl);
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extern ParseNamespaceItem *addRangeTableEntryForValues(ParseState *pstate,
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List *exprs,
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List *coltypes,
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List *coltypmods,
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List *colcollations,
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Alias *alias,
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bool lateral,
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bool inFromCl);
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extern ParseNamespaceItem *addRangeTableEntryForTableFunc(ParseState *pstate,
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TableFunc *tf,
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Alias *alias,
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bool lateral,
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bool inFromCl);
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extern ParseNamespaceItem *addRangeTableEntryForJoin(ParseState *pstate,
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List *colnames,
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ParseNamespaceColumn *nscolumns,
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JoinType jointype,
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int nummergedcols,
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List *aliasvars,
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List *leftcols,
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List *rightcols,
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Alias *join_using_alias,
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Alias *alias,
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bool inFromCl);
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extern ParseNamespaceItem *addRangeTableEntryForCTE(ParseState *pstate,
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CommonTableExpr *cte,
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Index levelsup,
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RangeVar *rv,
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bool inFromCl);
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extern ParseNamespaceItem *addRangeTableEntryForENR(ParseState *pstate,
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RangeVar *rv,
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bool inFromCl);
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extern ParseNamespaceItem *addRangeTableEntryForGroup(ParseState *pstate,
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List *groupClauses);
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extern RTEPermissionInfo *addRTEPermissionInfo(List **rteperminfos,
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RangeTblEntry *rte);
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extern RTEPermissionInfo *getRTEPermissionInfo(List *rteperminfos,
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RangeTblEntry *rte);
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extern bool isLockedRefname(ParseState *pstate, const char *refname);
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extern void addNSItemToQuery(ParseState *pstate, ParseNamespaceItem *nsitem,
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bool addToJoinList,
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bool addToRelNameSpace, bool addToVarNameSpace);
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pg_noreturn extern void errorMissingRTE(ParseState *pstate, RangeVar *relation);
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pg_noreturn extern void errorMissingColumn(ParseState *pstate,
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const char *relname, const char *colname, int location);
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extern void expandRTE(RangeTblEntry *rte, int rtindex, int sublevels_up,
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VarReturningType returning_type,
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int location, bool include_dropped,
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List **colnames, List **colvars);
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extern List *expandNSItemVars(ParseState *pstate, ParseNamespaceItem *nsitem,
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int sublevels_up, int location,
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List **colnames);
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extern List *expandNSItemAttrs(ParseState *pstate, ParseNamespaceItem *nsitem,
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int sublevels_up, bool require_col_privs,
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int location);
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extern int attnameAttNum(Relation rd, const char *attname, bool sysColOK);
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extern const NameData *attnumAttName(Relation rd, int attid);
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extern Oid attnumTypeId(Relation rd, int attid);
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extern Oid attnumCollationId(Relation rd, int attid);
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extern bool isQueryUsingTempRelation(Query *query);
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#endif /* PARSE_RELATION_H */
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