63 lines
1.8 KiB
C
63 lines
1.8 KiB
C
/*
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* psql - the PostgreSQL interactive terminal
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*
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* Copyright (c) 2000-2016, PostgreSQL Global Development Group
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*
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* src/bin/psql/psqlscan.h
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*/
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#ifndef PSQLSCAN_H
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#define PSQLSCAN_H
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#include "pqexpbuffer.h"
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#include "prompt.h"
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/* Abstract type for lexer's internal state */
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typedef struct PsqlScanStateData *PsqlScanState;
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/* Termination states for psql_scan() */
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typedef enum
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{
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PSCAN_SEMICOLON, /* found command-ending semicolon */
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PSCAN_BACKSLASH, /* found backslash command */
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PSCAN_INCOMPLETE, /* end of line, SQL statement incomplete */
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PSCAN_EOL /* end of line, SQL possibly complete */
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} PsqlScanResult;
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/* Callback functions to be used by the lexer */
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typedef struct PsqlScanCallbacks
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{
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/* Fetch value of a variable, as a pfree'able string; NULL if unknown */
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/* This pointer can be NULL if no variable substitution is wanted */
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char *(*get_variable) (const char *varname, bool escape, bool as_ident);
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/* Print an error message someplace appropriate */
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/* (very old gcc versions don't support attributes on function pointers) */
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#if defined(__GNUC__) && __GNUC__ < 4
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void (*write_error) (const char *fmt,...);
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#else
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void (*write_error) (const char *fmt,...) pg_attribute_printf(1, 2);
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#endif
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} PsqlScanCallbacks;
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extern PsqlScanState psql_scan_create(const PsqlScanCallbacks *callbacks);
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extern void psql_scan_destroy(PsqlScanState state);
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extern void psql_scan_setup(PsqlScanState state,
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const char *line, int line_len,
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int encoding, bool std_strings);
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extern void psql_scan_finish(PsqlScanState state);
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extern PsqlScanResult psql_scan(PsqlScanState state,
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PQExpBuffer query_buf,
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promptStatus_t *prompt);
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extern void psql_scan_reset(PsqlScanState state);
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extern void psql_scan_reselect_sql_lexer(PsqlScanState state);
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extern bool psql_scan_in_quote(PsqlScanState state);
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#endif /* PSQLSCAN_H */
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