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

     /* 
      * 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 "AS IS"
     * 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 Mellon
     * the rights to redistribute these changes.
     */
    /*
     * HISTORY
     * $Log:        db_lex.h,v $
     * Revision 2.6  93/01/14  17:25:13  danner
     *      64bit cleanup.
     *      [92/11/30            af]
     * 
     * Revision 2.5  91/10/09  16:00:48  af
     *       Revision 2.4.3.1  91/10/05  13:06:34  jeffreyh
     *              Added db_lex_context structure and some routine declarations
     *                for macro and conditinal command.
     *              Added relational operator tokens etc. for condition expression.
     *              Changed TOK_STRING_SIZE from 120 to 64, and defined
     *                DB_LEX_LINE_SIZE as 256 which was previously embedded
     *                in db_lex.c as 120.
     *              [91/08/29            tak]
     *      Revision 2.4.1 91/07/15  09:30:00  tak
     *              Added db_lex_context for macro support
     *              Added some lexical constants to support logical expression etc.
     *              [91/05/15  13:55:00  tak]
     * 
     * Revision 2.4.3.1  91/10/05  13:06:34  jeffreyh
     *      Added db_lex_context structure and some routine declarations
     *        for macro and conditinal command.
     *      Added relational operator tokens etc. for condition expression.
     *      Changed TOK_STRING_SIZE from 120 to 64, and defined
     *        DB_LEX_LINE_SIZE as 256 which was previously embedded
     *        in db_lex.c as 120.
     *      [91/08/29            tak]
     * 
     * Revision 2.4.1 91/07/15  09:30:00  tak
     *      Added db_lex_context for macro support
     *      Added some lexical constants to support logical expression etc.
     *      [91/05/15  13:55:00  tak]
     *
     * Revision 2.4  91/05/14  15:34:38  mrt
     *      Correcting copyright
     * 
     * Revision 2.3  91/02/05  17:06:41  mrt
     *      Changed to new Mach copyright
     *      [91/01/31  16:18:28  mrt]
     * 
     * Revision 2.2  90/08/27  21:51:16  dbg
     *      Add 'dotdot' token.
     *      [90/08/22            dbg]
     *      Export db_flush_lex.
     *      [90/08/07            dbg]
     *      Created.
     *      [90/07/25            dbg]
     * 
     */
    /*
     *      Author: David B. Golub, Carnegie Mellon University
     *      Date:   7/90
     */
    /*
     * Lexical analyzer.
     */
    
    #define TOK_STRING_SIZE         64 
    #define DB_LEX_LINE_SIZE        256
    
    struct db_lex_context {
            int  l_char;            /* peek char */
            int  l_token;           /* peek token */
            char *l_ptr;            /* line pointer */
            char *l_eptr;           /* line end pointer */
    };
    
    extern int      db_read_line(/* char *rep_str */);
    extern void     db_flush_line();
    extern int      db_read_char();
    extern void     db_unread_char(/* char c */);
    extern int      db_read_token();
   extern void     db_unread_token(/* int t */);
   extern void     db_flush_lex();
   extern void     db_switch_input(/* char *, int */);
   extern void     db_save_lex_context(/* struct db_lex_context * */);
   extern void     db_restore_lex_context(/* struct db_lex_context * */);
   extern void     db_skip_to_eol();
   
   extern db_expr_t db_tok_number;
   extern char     db_tok_string[TOK_STRING_SIZE];
   extern db_expr_t db_radix;
   
   #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 tQUOTE          15
   #define tDOLLAR         16
   #define tEXCL           17
   #define tSHIFT_L        18
   #define tSHIFT_R        19
   #define tDOTDOT         20
   #define tSEMI_COLON     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

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