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62e29fe2e7
from Param nodes, per discussion a few days ago on pghackers. Add new expression node type FieldSelect that implements the functionality where it's actually needed. Clean up some other unused fields in Func nodes as well. NOTE: initdb forced due to change in stored expression trees for rules.
54 lines
1.5 KiB
C
54 lines
1.5 KiB
C
/*-------------------------------------------------------------------------
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*
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* parse_func.h
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*
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*
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*
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* Portions Copyright (c) 1996-2000, PostgreSQL, Inc
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* Portions Copyright (c) 1994, Regents of the University of California
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*
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* $Id: parse_func.h,v 1.25 2000/08/08 15:42:59 tgl Exp $
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*
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*-------------------------------------------------------------------------
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*/
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#ifndef PARSER_FUNC_H
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#define PARSER_FUNC_H
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#include "parser/parse_node.h"
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/*
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* This structure is used to explore the inheritance hierarchy above
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* nodes in the type tree in order to disambiguate among polymorphic
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* functions.
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*/
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typedef struct _InhPaths
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{
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int nsupers; /* number of superclasses */
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Oid self; /* this class */
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Oid *supervec; /* vector of superclasses */
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} InhPaths;
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/*
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* This structure holds a list of possible functions or operators that
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* agree with the known name and argument types of the function/operator.
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*/
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typedef struct _CandidateList
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{
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Oid *args;
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struct _CandidateList *next;
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} *CandidateList;
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extern Node *ParseNestedFuncOrColumn(ParseState *pstate, Attr *attr,
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int *curr_resno, int precedence);
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extern Node *ParseFuncOrColumn(ParseState *pstate,
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char *funcname, List *fargs,
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bool agg_star, bool agg_distinct,
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int *curr_resno, int precedence);
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extern bool typeInheritsFrom(Oid subclassTypeId, Oid superclassTypeId);
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extern void func_error(char *caller, char *funcname,
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int nargs, Oid *argtypes, char *msg);
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#endif /* PARSE_FUNC_H */
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