[apple/shell_cmds.git] / window / context.h

/*	$NetBSD: context.h,v 1.3 1995/09/28 10:34:17 tls Exp $	*/

/*
 * Copyright (c) 1983, 1993
 *	The Regents of the University of California.  All rights reserved.
 *
 * This code is derived from software contributed to Berkeley by
 * Edward Wang at The University of California, Berkeley.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 3. All advertising materials mentioning features or use of this software
 *    must display the following acknowledgement:
 *	This product includes software developed by the University of
 *	California, Berkeley and its contributors.
 * 4. Neither the name of the University nor the names of its contributors
 *    may be used to endorse or promote products derived from this software
 *    without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 *
 *	@(#)context.h	8.1 (Berkeley) 6/6/93
 */

#include <stdio.h>

#ifndef EXTERN
#define EXTERN extern
#endif

struct context {
	struct context *x_link;		/* nested contexts */
	char x_type;			/* tag for union */
	union {
		struct {	/* input is a file */
			char *X_filename;	/* input file name */
			FILE *X_fp;		/* input stream */
			short X_lineno;		/* current line number */
			char X_bol;		/* at beginning of line */
			char X_noerr;		/* don't report errors */
			struct ww *X_errwin;	/* error window */
		} x_f;
		struct {	/* input is a buffer */
			char *X_buf;		/* input buffer */
			char *X_bufp;		/* current position in buf */
			struct value *X_arg;	/* argument for alias */
			int X_narg;		/* number of arguments */
		} x_b;
	} x_un;
		/* holding place for current token */
	int x_token;			/* the token */
	struct value x_val;		/* values associated with token */
		/* parser error flags */
	unsigned x_erred :1;		/* had an error */
	unsigned x_synerred :1;		/* had syntax error */
	unsigned x_abort :1;		/* fatal error */
};
#define x_buf		x_un.x_b.X_buf
#define x_bufp		x_un.x_b.X_bufp
#define x_arg		x_un.x_b.X_arg
#define x_narg		x_un.x_b.X_narg
#define x_filename	x_un.x_f.X_filename
#define x_fp		x_un.x_f.X_fp
#define x_lineno	x_un.x_f.X_lineno
#define x_bol		x_un.x_f.X_bol
#define x_errwin	x_un.x_f.X_errwin
#define x_noerr		x_un.x_f.X_noerr

	/* x_type values, 0 is reserved */
#define X_FILE		1		/* input is a file */
#define X_BUF		2		/* input is a buffer */

EXTERN struct context cx;			/* the current context */
Commit	Line	Data
44bd5ea7 A	1	/* $NetBSD: context.h,v 1.3 1995/09/28 10:34:17 tls Exp $ */
	2
	3	/*
	4	* Copyright (c) 1983, 1993
	5	* The Regents of the University of California. All rights reserved.
	6	*
	7	* This code is derived from software contributed to Berkeley by
	8	* Edward Wang at The University of California, Berkeley.
	9	*
	10	* Redistribution and use in source and binary forms, with or without
	11	* modification, are permitted provided that the following conditions
	12	* are met:
	13	* 1. Redistributions of source code must retain the above copyright
	14	* notice, this list of conditions and the following disclaimer.
	15	* 2. Redistributions in binary form must reproduce the above copyright
	16	* notice, this list of conditions and the following disclaimer in the
	17	* documentation and/or other materials provided with the distribution.
	18	* 3. All advertising materials mentioning features or use of this software
	19	* must display the following acknowledgement:
	20	* This product includes software developed by the University of
	21	* California, Berkeley and its contributors.
	22	* 4. Neither the name of the University nor the names of its contributors
	23	* may be used to endorse or promote products derived from this software
	24	* without specific prior written permission.
	25	*
	26	* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
	27	* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
	28	* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
	29	* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
	30	* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
	31	* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
	32	* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
	33	* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
	34	* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
	35	* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
	36	* SUCH DAMAGE.
	37	*
	38	* @(#)context.h 8.1 (Berkeley) 6/6/93
	39	*/
	40
	41	#include <stdio.h>
	42
	43	#ifndef EXTERN
	44	#define EXTERN extern
	45	#endif
	46
	47	struct context {
	48	struct context x_link; / nested contexts */
	49	char x_type; /* tag for union */
	50	union {
	51	struct { /* input is a file */
	52	char X_filename; / input file name */
	53	FILE X_fp; / input stream */
	54	short X_lineno; /* current line number */
	55	char X_bol; /* at beginning of line */
	56	char X_noerr; /* don't report errors */
	57	struct ww X_errwin; / error window */
	58	} x_f;
	59	struct { /* input is a buffer */
	60	char X_buf; / input buffer */
	61	char X_bufp; / current position in buf */
	62	struct value X_arg; / argument for alias */
	63	int X_narg; /* number of arguments */
	64	} x_b;
65	} x_un;
66	/* holding place for current token */
67	int x_token; /* the token */
68	struct value x_val; /* values associated with token */
69	/* parser error flags */
70	unsigned x_erred :1; /* had an error */
71	unsigned x_synerred :1; /* had syntax error */
72	unsigned x_abort :1; /* fatal error */
73	};
74	#define x_buf x_un.x_b.X_buf
75	#define x_bufp x_un.x_b.X_bufp
76	#define x_arg x_un.x_b.X_arg
77	#define x_narg x_un.x_b.X_narg
78	#define x_filename x_un.x_f.X_filename
79	#define x_fp x_un.x_f.X_fp
80	#define x_lineno x_un.x_f.X_lineno
81	#define x_bol x_un.x_f.X_bol
82	#define x_errwin x_un.x_f.X_errwin
83	#define x_noerr x_un.x_f.X_noerr
84
85	/* x_type values, 0 is reserved */
86	#define X_FILE 1 /* input is a file */
87	#define X_BUF 2 /* input is a buffer */
88
89	EXTERN struct context cx; /* the current context */