The Design and Implementation of the FreeBSD Operating System, Second Edition
Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)


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FreeBSD/Linux Kernel Cross Reference
sys/ddb/db_lex.h

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    1 /* 
    2  * Mach Operating System
    3  * Copyright (c) 1993,1992,1991,1990 Carnegie Mellon University
    4  * All Rights Reserved.
    5  * 
    6  * Permission to use, copy, modify and distribute this software and its
    7  * documentation is hereby granted, provided that both the copyright
    8  * notice and this permission notice appear in all copies of the
    9  * software, derivative works or modified versions, and any portions
   10  * thereof, and that both notices appear in supporting documentation.
   11  * 
   12  * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
   13  * CONDITION.  CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND FOR
   14  * ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
   15  * 
   16  * Carnegie Mellon requests users of this software to return to
   17  * 
   18  *  Software Distribution Coordinator  or  Software.Distribution@CS.CMU.EDU
   19  *  School of Computer Science
   20  *  Carnegie Mellon University
   21  *  Pittsburgh PA 15213-3890
   22  * 
   23  * any improvements or extensions that they make and grant Carnegie Mellon
   24  * the rights to redistribute these changes.
   25  */
   26 /*
   27  * HISTORY
   28  * $Log:        db_lex.h,v $
   29  * Revision 2.7  93/11/17  16:23:06  dbg
   30  *      Enabled prototypes.
   31  *      [93/10/06            dbg]
   32  * 
   33  * Revision 2.6  93/01/14  17:25:13  danner
   34  *      64bit cleanup.
   35  *      [92/11/30            af]
   36  * 
   37  * Revision 2.5  91/10/09  16:00:48  af
   38  *      Added db_lex_context structure and some routine declarations
   39  *        for macro and conditional command.
   40  *      Added relational operator tokens etc. for condition expression.
   41  *      Changed TOK_STRING_SIZE from 120 to 64, and defined
   42  *        DB_LEX_LINE_SIZE as 256 which was previously embedded
   43  *        in db_lex.c as 120.
   44  *      [91/08/29            tak]
   45  * 
   46  *      Added db_lex_context for macro support
   47  *      Added some lexical constants to support logical expression etc.
   48  *      [91/05/15  13:55:00  tak]
   49  *
   50  * Revision 2.4  91/05/14  15:34:38  mrt
   51  *      Correcting copyright
   52  * 
   53  * Revision 2.3  91/02/05  17:06:41  mrt
   54  *      Changed to new Mach copyright
   55  *      [91/01/31  16:18:28  mrt]
   56  * 
   57  * Revision 2.2  90/08/27  21:51:16  dbg
   58  *      Add 'dotdot' token.
   59  *      [90/08/22            dbg]
   60  *      Export db_flush_lex.
   61  *      [90/08/07            dbg]
   62  *      Created.
   63  *      [90/07/25            dbg]
   64  * 
   65  */
   66 /*
   67  *      Author: David B. Golub, Carnegie Mellon University
   68  *      Date:   7/90
   69  */
   70 /*
   71  * Lexical analyzer.
   72  */
   73 
   74 #define TOK_STRING_SIZE         64 
   75 #define DB_LEX_LINE_SIZE        256
   76 
   77 struct db_lex_context {
   78         int  l_char;            /* peek char */
   79         int  l_token;           /* peek token */
   80         char *l_ptr;            /* line pointer */
   81         char *l_eptr;           /* line end pointer */
   82 };
   83 
   84 extern int      db_read_line(char *repeat_last);
   85 extern void     db_flush_line(void);
   86 extern int      db_read_char(void);
   87 extern void     db_unread_char(int c);
   88 extern int      db_read_token(void);
   89 extern void     db_unread_token(int t);
   90 extern void     db_flush_lex(void);
   91 extern void     db_switch_input(char *buffer, int size);
   92 extern void     db_save_lex_context(struct db_lex_context *);
   93 extern void     db_restore_lex_context(struct db_lex_context *);
   94 extern void     db_skip_to_eol(void);
   95 
   96 extern db_expr_t db_tok_number;
   97 extern char     db_tok_string[TOK_STRING_SIZE];
   98 extern db_expr_t db_radix;
   99 
  100 #define tEOF            (-1)
  101 #define tEOL            1
  102 #define tNUMBER         2
  103 #define tIDENT          3
  104 #define tPLUS           4
  105 #define tMINUS          5
  106 #define tDOT            6
  107 #define tSTAR           7
  108 #define tSLASH          8
  109 #define tEQ             9
  110 #define tLPAREN         10
  111 #define tRPAREN         11
  112 #define tPCT            12
  113 #define tHASH           13
  114 #define tCOMMA          14
  115 #define tQUOTE          15
  116 #define tDOLLAR         16
  117 #define tEXCL           17
  118 #define tSHIFT_L        18
  119 #define tSHIFT_R        19
  120 #define tDOTDOT         20
  121 #define tSEMI_COLON     21
  122 #define tLOG_EQ         22
  123 #define tLOG_NOT_EQ     23
  124 #define tLESS           24
  125 #define tLESS_EQ        25
  126 #define tGREATER        26
  127 #define tGREATER_EQ     27
  128 #define tBIT_AND        28
  129 #define tBIT_OR         29
  130 #define tLOG_AND        30
  131 #define tLOG_OR         31
  132 #define tSTRING         32
  133 #define tQUESTION       33

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