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db_lex.c (623) db_lex.c (798)
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

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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 the
24 * rights to redistribute these changes.
25 *
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

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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 the
24 * rights to redistribute these changes.
25 *
26 * $Id$
26 * $Id: db_lex.c,v 1.2 1993/10/16 16:47:17 rgrimes Exp $
27 */
28
29/*
30 * Author: David B. Golub, Carnegie Mellon University
31 * Date: 7/90
32 */
33/*
34 * Lexical analyzer.
35 */
27 */
28
29/*
30 * Author: David B. Golub, Carnegie Mellon University
31 * Date: 7/90
32 */
33/*
34 * Lexical analyzer.
35 */
36#include "param.h"
37#include "systm.h"
38#include "ddb/ddb.h"
36#include <ddb/db_lex.h>
37
38char db_line[120];
39char * db_lp, *db_endlp;
40
41int
42db_read_line()
43{

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73 c = -1;
74 else
75 c = *db_lp++;
76 return (c);
77}
78
79void
80db_unread_char(c)
39#include <ddb/db_lex.h>
40
41char db_line[120];
42char * db_lp, *db_endlp;
43
44int
45db_read_line()
46{

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76 c = -1;
77 else
78 c = *db_lp++;
79 return (c);
80}
81
82void
83db_unread_char(c)
84 int c;
81{
82 db_look_char = c;
83}
84
85int db_look_token = 0;
86
87void
88db_unread_token(t)

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127 while (c <= ' ' || c > '~') {
128 if (c == '\n' || c == -1)
129 return (tEOL);
130 c = db_read_char();
131 }
132
133 if (c >= '0' && c <= '9') {
134 /* number */
85{
86 db_look_char = c;
87}
88
89int db_look_token = 0;
90
91void
92db_unread_token(t)

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131 while (c <= ' ' || c > '~') {
132 if (c == '\n' || c == -1)
133 return (tEOL);
134 c = db_read_char();
135 }
136
137 if (c >= '0' && c <= '9') {
138 /* number */
135 int r, digit;
139 int r, digit = 0;
136
137 if (c > '0')
138 r = db_radix;
139 else {
140 c = db_read_char();
141 if (c == 'O' || c == 'o')
142 r = 8;
143 else if (c == 'T' || c == 't')

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141 if (c > '0')
142 r = db_radix;
143 else {
144 c = db_read_char();
145 if (c == 'O' || c == 'o')
146 r = 8;
147 else if (c == 'T' || c == 't')

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