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/*
* psql - the PostgreSQL interactive terminal
*
* Copyright (c) 2000-2012, PostgreSQL Global Development Group
*
* src/bin/psql/psqlscan.h
*/
#ifndef PSQLSCAN_H
#define PSQLSCAN_H
#include "pqexpbuffer.h"
#include "prompt.h"
/* Abstract type for lexer's internal state */
typedef struct PsqlScanStateData *PsqlScanState;
/* Termination states for psql_scan() */
typedef enum
{
PSCAN_SEMICOLON, /* found command-ending semicolon */
PSCAN_BACKSLASH, /* found backslash command */
PSCAN_INCOMPLETE, /* end of line, SQL statement incomplete */
PSCAN_EOL /* end of line, SQL possibly complete */
} PsqlScanResult;
/* Different ways for scan_slash_option to handle parameter words */
enum slash_option_type
{
OT_NORMAL, /* normal case */
OT_SQLID, /* treat as SQL identifier */
OT_SQLIDHACK, /* SQL identifier, but don't downcase */
OT_FILEPIPE, /* it's a filename or pipe */
OT_WHOLE_LINE, /* just snarf the rest of the line */
OT_NO_EVAL /* no expansion of backticks or variables */
};
extern PsqlScanState psql_scan_create(void);
extern void psql_scan_destroy(PsqlScanState state);
extern void psql_scan_setup(PsqlScanState state,
const char *line, int line_len);
extern void psql_scan_finish(PsqlScanState state);
extern PsqlScanResult psql_scan(PsqlScanState state,
PQExpBuffer query_buf,
promptStatus_t *prompt);
extern void psql_scan_reset(PsqlScanState state);
extern bool psql_scan_in_quote(PsqlScanState state);
extern char *psql_scan_slash_command(PsqlScanState state);
extern char *psql_scan_slash_option(PsqlScanState state,
enum slash_option_type type,
char *quote,
bool semicolon);
extern void psql_scan_slash_command_end(PsqlScanState state);
#endif /* PSQLSCAN_H */
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