mirror of
https://git.hardenedbsd.org/hardenedbsd/HardenedBSD.git
synced 2024-11-22 11:14:18 +01:00
137 lines
3.3 KiB
C
137 lines
3.3 KiB
C
/*-
|
|
* SPDX-License-Identifier: MIT-CMU
|
|
*
|
|
* Mach Operating System
|
|
* Copyright (c) 1991,1990 Carnegie Mellon University
|
|
* All Rights Reserved.
|
|
*
|
|
* Permission to use, copy, modify and distribute this software and its
|
|
* documentation is hereby granted, provided that both the copyright
|
|
* notice and this permission notice appear in all copies of the
|
|
* software, derivative works or modified versions, and any portions
|
|
* thereof, and that both notices appear in supporting documentation.
|
|
*
|
|
* CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS
|
|
* CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND FOR
|
|
* ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
|
|
*
|
|
* Carnegie Mellon requests users of this software to return to
|
|
*
|
|
* Software Distribution Coordinator or Software.Distribution@CS.CMU.EDU
|
|
* School of Computer Science
|
|
* Carnegie Mellon University
|
|
* Pittsburgh PA 15213-3890
|
|
*
|
|
* any improvements or extensions that they make and grant Carnegie the
|
|
* rights to redistribute these changes.
|
|
*/
|
|
|
|
#ifndef _DDB_DB_LEX_H_
|
|
#define _DDB_DB_LEX_H_
|
|
|
|
/*
|
|
* Author: David B. Golub, Carnegie Mellon University
|
|
* Date: 7/90
|
|
*/
|
|
/*
|
|
* Lexical analyzer.
|
|
*/
|
|
|
|
/*
|
|
* Options and flags can configure db_read_token() => db_lex() behavior.
|
|
*
|
|
* When a radix other than DRT_DEFAULT_RADIX is used, it overrides
|
|
* auto-detection, as well as the user-specified db_radix, in db_lex() of
|
|
* 'tNUMBER' tokens.
|
|
*/
|
|
enum {
|
|
/* Infer or use db_radix using the old logic. */
|
|
DRT_DEFAULT_RADIX = 0,
|
|
/* The following set an explicit base for tNUMBER lex. */
|
|
DRT_OCTAL,
|
|
DRT_DECIMAL,
|
|
DRT_HEXADECIMAL,
|
|
};
|
|
#define DRT_RADIX_MASK 0x3
|
|
/*
|
|
* Flag bit powers of two for db_read_token_flags.
|
|
* The low 2 bits are reserved for radix selection.
|
|
*
|
|
* WSPACE: Yield explicit tWSPACE tokens when one or more whitespace characters
|
|
* is consumed.
|
|
* HEX: Allow tNUMBER tokens to start with 'A'-'F' without explicit "0x"
|
|
* prefix.
|
|
*/
|
|
enum {
|
|
_DRT_WSPACE = 2,
|
|
_DRT_HEX,
|
|
};
|
|
#ifndef BIT
|
|
#define BIT(n) (1ull << (n))
|
|
#endif
|
|
enum {
|
|
DRT_WSPACE = BIT(_DRT_WSPACE),
|
|
DRT_HEX = BIT(_DRT_HEX),
|
|
};
|
|
#define DRT_VALID_FLAGS_MASK ((int)DRT_RADIX_MASK | \
|
|
DRT_WSPACE | \
|
|
DRT_HEX)
|
|
|
|
void db_flush_lex(void);
|
|
char *db_get_line(void);
|
|
void db_inject_line(const char *command);
|
|
int db_read_line(void);
|
|
int db_read_token_flags(int);
|
|
void db_unread_token(int t);
|
|
|
|
static inline int
|
|
db_read_token(void)
|
|
{
|
|
return (db_read_token_flags(0));
|
|
}
|
|
|
|
extern db_expr_t db_tok_number;
|
|
#define TOK_STRING_SIZE 120
|
|
extern char db_tok_string[TOK_STRING_SIZE];
|
|
|
|
#define tEOF (-1)
|
|
#define tEOL 1
|
|
#define tNUMBER 2
|
|
#define tIDENT 3
|
|
#define tPLUS 4
|
|
#define tMINUS 5
|
|
#define tDOT 6
|
|
#define tSTAR 7
|
|
#define tSLASH 8
|
|
#define tEQ 9
|
|
#define tLPAREN 10
|
|
#define tRPAREN 11
|
|
#define tPCT 12
|
|
#define tHASH 13
|
|
#define tCOMMA 14
|
|
#define tDITTO 15
|
|
#define tDOLLAR 16
|
|
#define tEXCL 17
|
|
#define tSHIFT_L 18
|
|
#define tSHIFT_R 19
|
|
#define tDOTDOT 20
|
|
#define tSEMI 21
|
|
#define tLOG_EQ 22
|
|
#define tLOG_NOT_EQ 23
|
|
#define tLESS 24
|
|
#define tLESS_EQ 25
|
|
#define tGREATER 26
|
|
#define tGREATER_EQ 27
|
|
#define tBIT_AND 28
|
|
#define tBIT_OR 29
|
|
#define tLOG_AND 30
|
|
#define tLOG_OR 31
|
|
#define tSTRING 32
|
|
#define tQUESTION 33
|
|
#define tBIT_NOT 34
|
|
#define tWSPACE 35
|
|
#define tCOLON 36
|
|
#define tCOLONCOLON 37
|
|
|
|
#endif /* !_DDB_DB_LEX_H_ */
|