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/*-------------------------------------------------------------------------
*
* parser.h
* Definitions for the "raw" parser (flex and bison phases only)
*
* This is the external API for the raw lexing/parsing functions.
*
* Portions Copyright (c) 1996-2023, PostgreSQL Global Development Group
* Portions Copyright (c) 1994, Regents of the University of California
*
* src/include/parser/parser.h
*
*-------------------------------------------------------------------------
*/
#ifndef PARSER_H
#define PARSER_H
#include "nodes/parsenodes.h"
/*
* RawParseMode determines the form of the string that raw_parser() accepts:
*
* RAW_PARSE_DEFAULT: parse a semicolon-separated list of SQL commands,
* and return a List of RawStmt nodes.
*
* RAW_PARSE_TYPE_NAME: parse a type name, and return a one-element List
* containing a TypeName node.
*
* RAW_PARSE_PLPGSQL_EXPR: parse a PL/pgSQL expression, and return
* a one-element List containing a RawStmt node.
*
* RAW_PARSE_PLPGSQL_ASSIGNn: parse a PL/pgSQL assignment statement,
* and return a one-element List containing a RawStmt node. "n"
* gives the number of dotted names comprising the target ColumnRef.
*/
typedef enum
{
RAW_PARSE_DEFAULT = 0,
RAW_PARSE_TYPE_NAME,
RAW_PARSE_PLPGSQL_EXPR,
RAW_PARSE_PLPGSQL_ASSIGN1,
RAW_PARSE_PLPGSQL_ASSIGN2,
RAW_PARSE_PLPGSQL_ASSIGN3
} RawParseMode;
/* Values for the backslash_quote GUC */
typedef enum
{
BACKSLASH_QUOTE_OFF,
BACKSLASH_QUOTE_ON,
BACKSLASH_QUOTE_SAFE_ENCODING
} BackslashQuoteType;
/* GUC variables in scan.l (every one of these is a bad idea :-() */
extern PGDLLIMPORT int backslash_quote;
extern PGDLLIMPORT bool escape_string_warning;
extern PGDLLIMPORT bool standard_conforming_strings;
/* Primary entry point for the raw parsing functions */
extern List *raw_parser(const char *str, RawParseMode mode);
/* Utility functions exported by gram.y (perhaps these should be elsewhere) */
extern List *SystemFuncName(char *name);
extern TypeName *SystemTypeName(char *name);
#endif /* PARSER_H */