Annotation of src/usr.bin/window/context.h, Revision 1.4
1.4 ! millert 1: /* $OpenBSD: context.h,v 1.3 1997/02/25 00:04:03 downsj Exp $ */
1.1 deraadt 2: /* $NetBSD: context.h,v 1.3 1995/09/28 10:34:17 tls Exp $ */
3:
4: /*
5: * Copyright (c) 1983, 1993
6: * The Regents of the University of California. All rights reserved.
7: *
8: * This code is derived from software contributed to Berkeley by
9: * Edward Wang at The University of California, Berkeley.
10: *
11: * Redistribution and use in source and binary forms, with or without
12: * modification, are permitted provided that the following conditions
13: * are met:
14: * 1. Redistributions of source code must retain the above copyright
15: * notice, this list of conditions and the following disclaimer.
16: * 2. Redistributions in binary form must reproduce the above copyright
17: * notice, this list of conditions and the following disclaimer in the
18: * documentation and/or other materials provided with the distribution.
1.4 ! millert 19: * 3. Neither the name of the University nor the names of its contributors
1.1 deraadt 20: * may be used to endorse or promote products derived from this software
21: * without specific prior written permission.
22: *
23: * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
24: * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
25: * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
26: * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
27: * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
28: * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
29: * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
30: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
31: * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
32: * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
33: * SUCH DAMAGE.
34: *
35: * @(#)context.h 8.1 (Berkeley) 6/6/93
36: */
37:
38: #include <stdio.h>
39:
40: struct context {
41: struct context *x_link; /* nested contexts */
42: char x_type; /* tag for union */
43: union {
44: struct { /* input is a file */
45: char *X_filename; /* input file name */
46: FILE *X_fp; /* input stream */
47: short X_lineno; /* current line number */
48: char X_bol; /* at beginning of line */
49: char X_noerr; /* don't report errors */
50: struct ww *X_errwin; /* error window */
51: } x_f;
52: struct { /* input is a buffer */
53: char *X_buf; /* input buffer */
54: char *X_bufp; /* current position in buf */
55: struct value *X_arg; /* argument for alias */
56: int X_narg; /* number of arguments */
57: } x_b;
58: } x_un;
59: /* holding place for current token */
60: int x_token; /* the token */
61: struct value x_val; /* values associated with token */
62: /* parser error flags */
63: unsigned x_erred :1; /* had an error */
64: unsigned x_synerred :1; /* had syntax error */
65: unsigned x_abort :1; /* fatal error */
66: };
67: #define x_buf x_un.x_b.X_buf
68: #define x_bufp x_un.x_b.X_bufp
69: #define x_arg x_un.x_b.X_arg
70: #define x_narg x_un.x_b.X_narg
71: #define x_filename x_un.x_f.X_filename
72: #define x_fp x_un.x_f.X_fp
73: #define x_lineno x_un.x_f.X_lineno
74: #define x_bol x_un.x_f.X_bol
75: #define x_errwin x_un.x_f.X_errwin
76: #define x_noerr x_un.x_f.X_noerr
77:
78: /* x_type values, 0 is reserved */
79: #define X_FILE 1 /* input is a file */
80: #define X_BUF 2 /* input is a buffer */
81:
82: struct context cx; /* the current context */