1%{
2/*
3 * Sub-Lexical Analyzer for macro invokation in
4 * the Aic7xxx SCSI Host adapter sequencer assembler.
5 *
6 * Copyright (c) 2001 Adaptec Inc.
7 * All rights reserved.
8 *
9 * Redistribution and use in source and binary forms, with or without
10 * modification, are permitted provided that the following conditions
11 * are met:
12 * 1. Redistributions of source code must retain the above copyright
13 *    notice, this list of conditions, and the following disclaimer,
14 *    without modification.
15 * 2. Redistributions in binary form must reproduce at minimum a disclaimer
16 *    substantially similar to the "NO WARRANTY" disclaimer below
17 *    ("Disclaimer") and any redistribution must be conditioned upon
18 *    including a substantially similar Disclaimer requirement for further
19 *    binary redistribution.
20 * 3. Neither the names of the above-listed copyright holders nor the names
21 *    of any contributors may be used to endorse or promote products derived
22 *    from this software without specific prior written permission.
23 *
24 * Alternatively, this software may be distributed under the terms of the
25 * GNU General Public License ("GPL") version 2 as published by the Free
26 * Software Foundation.
27 *
28 * NO WARRANTY
29 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
30 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
31 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR
32 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
33 * HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
34 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
35 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
36 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
37 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
38 * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
39 * POSSIBILITY OF SUCH DAMAGES.
40 *
41 * $Id: //depot/aic7xxx/aic7xxx/aicasm/aicasm_macro_scan.l#8 $
42 *
43 * $FreeBSD$
44 */
45
46#include <sys/types.h>
47
48#include <inttypes.h>
49#include <limits.h>
50#include <regex.h>
51#include <stdio.h>
52#include <string.h>
53#include <sysexits.h>
54#ifdef __linux__
55#include "../queue.h"
56#else
57#include <sys/queue.h>
58#endif
59
60#include "aicasm.h"
61#include "aicasm_symbol.h"
62#include "aicasm_macro_gram.h"
63
64#define MAX_STR_CONST 4096
65static char string_buf[MAX_STR_CONST];
66static char *string_buf_ptr;
67static int  parren_count;
68static char buf[255];
69int  mmlineno;
70%}
71
72WORD		[A-Za-z_][-A-Za-z_0-9]*
73SPACE		[ \t]+
74MCARG		[^(), \t]+
75
76%x ARGLIST
77
78%%
79\n			{
80				++mmlineno;
81			}
82\r			;
83<ARGLIST>{SPACE}	;
84<ARGLIST>\(		{
85				parren_count++;
86				if (parren_count == 1) {
87					string_buf_ptr = string_buf;
88					return ('(');
89				}
90				*string_buf_ptr++ = '(';
91			}
92<ARGLIST>\)		{
93				if (parren_count == 1) {
94					if (string_buf_ptr != string_buf) {
95						/*
96						 * Return an argument and
97						 * rescan this parren so we
98						 * can return it as well.
99						 */
100						*string_buf_ptr = '\0';
101						mmlval.str = string_buf;
102						string_buf_ptr = string_buf;
103						unput(')');
104						return T_ARG;
105					}
106					BEGIN INITIAL;
107					return (')');
108				}
109				parren_count--;
110				*string_buf_ptr++ = ')';
111			}
112<ARGLIST>{MCARG}	{
113				char *yptr;
114
115				yptr = mmtext;
116				while (*yptr)
117					*string_buf_ptr++ = *yptr++;
118			}
119<ARGLIST>\,		{
120				if (string_buf_ptr != string_buf) {
121					/*
122					 * Return an argument and
123					 * rescan this comma so we
124					 * can return it as well.
125					 */
126					*string_buf_ptr = '\0';
127					mmlval.str = string_buf;
128					string_buf_ptr = string_buf;
129					unput(',');
130					return T_ARG;
131				}
132				return ',';
133			}
134{WORD}[(]		{
135				/* May be a symbol or a macro invocation. */
136				mmlval.sym = symtable_get(mmtext);
137				if (mmlval.sym->type != MACRO) {
138					stop("Expecting Macro Name",
139					     EX_DATAERR);
140				}
141				unput('(');
142				parren_count = 0;
143				BEGIN ARGLIST;
144				return T_SYMBOL;
145			}
146.			{
147				snprintf(buf, sizeof(buf), "Invalid character "
148					 "'%c'", mmtext[0]);
149				stop(buf, EX_DATAERR);
150			}
151%%
152
153int
154mmwrap()
155{
156	stop("EOF encountered in macro call", EX_DATAERR);
157}
158