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56 lines
1.5 KiB
C
56 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 1.24 2000/04/12 17:16:45 momjian 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 List *setup_base_tlist(Oid typeid);
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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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