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Annotation of Gnu-Mach/ddb/db_lex.h, revision 1.1.1.1

1.1       root        1: /* 
                      2:  * Mach Operating System
                      3:  * Copyright (c) 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  [email protected]
                     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:  *     Author: David B. Golub, Carnegie Mellon University
                     28:  *     Date:   7/90
                     29:  */
                     30: /*
                     31:  * Lexical analyzer.
                     32:  */
                     33: 
                     34: #define        TOK_STRING_SIZE         64 
                     35: #define DB_LEX_LINE_SIZE       256
                     36: 
                     37: struct db_lex_context {
                     38:        int  l_char;            /* peek char */
                     39:        int  l_token;           /* peek token */
                     40:        char *l_ptr;            /* line pointer */
                     41:        char *l_eptr;           /* line end pointer */
                     42: };
                     43: 
                     44: extern int     db_read_line(/* char *rep_str */);
                     45: extern void    db_flush_line();
                     46: extern int     db_read_char();
                     47: extern void    db_unread_char(/* char c */);
                     48: extern int     db_read_token();
                     49: extern void    db_unread_token(/* int t */);
                     50: extern void    db_flush_lex();
                     51: extern void    db_switch_input(/* char *, int */);
                     52: extern void    db_save_lex_context(/* struct db_lex_context * */);
                     53: extern void    db_restore_lex_context(/* struct db_lex_context * */);
                     54: extern void    db_skip_to_eol();
                     55: 
                     56: extern db_expr_t db_tok_number;
                     57: extern char    db_tok_string[TOK_STRING_SIZE];
                     58: extern db_expr_t db_radix;
                     59: 
                     60: #define        tEOF            (-1)
                     61: #define        tEOL            1
                     62: #define        tNUMBER         2
                     63: #define        tIDENT          3
                     64: #define        tPLUS           4
                     65: #define        tMINUS          5
                     66: #define        tDOT            6
                     67: #define        tSTAR           7
                     68: #define        tSLASH          8
                     69: #define        tEQ             9
                     70: #define        tLPAREN         10
                     71: #define        tRPAREN         11
                     72: #define        tPCT            12
                     73: #define        tHASH           13
                     74: #define        tCOMMA          14
                     75: #define        tQUOTE          15
                     76: #define        tDOLLAR         16
                     77: #define        tEXCL           17
                     78: #define        tSHIFT_L        18
                     79: #define        tSHIFT_R        19
                     80: #define        tDOTDOT         20
                     81: #define tSEMI_COLON    21
                     82: #define tLOG_EQ                22
                     83: #define tLOG_NOT_EQ    23
                     84: #define tLESS          24
                     85: #define tLESS_EQ       25
                     86: #define tGREATER       26
                     87: #define tGREATER_EQ    27
                     88: #define tBIT_AND       28
                     89: #define tBIT_OR                29
                     90: #define tLOG_AND       30
                     91: #define tLOG_OR                31
                     92: #define tSTRING                32
                     93: #define tQUESTION      33

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