diff options
Diffstat (limited to 'src/backend/utils/fmgr/fmgr.c')
| -rw-r--r-- | src/backend/utils/fmgr/fmgr.c | 21 |
1 files changed, 12 insertions, 9 deletions
diff --git a/src/backend/utils/fmgr/fmgr.c b/src/backend/utils/fmgr/fmgr.c index 0d69ac1083..04e72e5341 100644 --- a/src/backend/utils/fmgr/fmgr.c +++ b/src/backend/utils/fmgr/fmgr.c @@ -8,7 +8,7 @@ * * * IDENTIFICATION - * $Header: /cvsroot/pgsql/src/backend/utils/fmgr/fmgr.c,v 1.71 2003/06/29 00:33:44 tgl Exp $ + * $Header: /cvsroot/pgsql/src/backend/utils/fmgr/fmgr.c,v 1.72 2003/07/01 00:04:38 tgl Exp $ * *------------------------------------------------------------------------- */ @@ -1616,16 +1616,19 @@ pg_detoast_datum_slice(struct varlena * datum, int32 first, int32 count) /*------------------------------------------------------------------------- * Support routines for extracting info from fn_expr parse tree + * + * These are needed by polymorphic functions, which accept multiple possible + * input types and need help from the parser to know what they've got. *------------------------------------------------------------------------- */ /* - * Get the OID of the function return type + * Get the actual type OID of the function return type * * Returns InvalidOid if information is not available */ Oid -get_fn_expr_rettype(FunctionCallInfo fcinfo) +get_fn_expr_rettype(FmgrInfo *flinfo) { Node *expr; @@ -1633,21 +1636,21 @@ get_fn_expr_rettype(FunctionCallInfo fcinfo) * can't return anything useful if we have no FmgrInfo or if * its fn_expr node has not been initialized */ - if (!fcinfo || !fcinfo->flinfo || !fcinfo->flinfo->fn_expr) + if (!flinfo || !flinfo->fn_expr) return InvalidOid; - expr = fcinfo->flinfo->fn_expr; + expr = flinfo->fn_expr; return exprType(expr); } /* - * Get the type OID of a specific function argument (counting from 0) + * Get the actual type OID of a specific function argument (counting from 0) * * Returns InvalidOid if information is not available */ Oid -get_fn_expr_argtype(FunctionCallInfo fcinfo, int argnum) +get_fn_expr_argtype(FmgrInfo *flinfo, int argnum) { Node *expr; List *args; @@ -1657,10 +1660,10 @@ get_fn_expr_argtype(FunctionCallInfo fcinfo, int argnum) * can't return anything useful if we have no FmgrInfo or if * its fn_expr node has not been initialized */ - if (!fcinfo || !fcinfo->flinfo || !fcinfo->flinfo->fn_expr) + if (!flinfo || !flinfo->fn_expr) return InvalidOid; - expr = fcinfo->flinfo->fn_expr; + expr = flinfo->fn_expr; if (IsA(expr, FuncExpr)) args = ((FuncExpr *) expr)->args; |