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#include "../queue.h"
55
56#include "aicasm.h"
57#include "aicasm_symbol.h"
58#include "aicasm_macro_gram.h"
59
60#define MAX_STR_CONST 4096
61static char string_buf[MAX_STR_CONST];
62static char *string_buf_ptr;
63static int  parren_count;
64static char buf[255];
65int  mmlineno;
66%}
67
68WORD		[A-Za-z_][-A-Za-z_0-9]*
69SPACE		[ \t]+
70MCARG		[^(), \t]+
71
72%x ARGLIST
73
74%%
75\n			{
76				++mmlineno;
77			}
78\r			;
79<ARGLIST>{SPACE}	;
80<ARGLIST>\(		{
81				parren_count++;
82				if (parren_count == 1) {
83					string_buf_ptr = string_buf;
84					return ('(');
85				}
86				*string_buf_ptr++ = '(';
87			}
88<ARGLIST>\)		{
89				if (parren_count == 1) {
90					if (string_buf_ptr != string_buf) {
91						/*
92						 * Return an argument and
93						 * rescan this parren so we
94						 * can return it as well.
95						 */
96						*string_buf_ptr = '\0';
97						mmlval.str = string_buf;
98						string_buf_ptr = string_buf;
99						unput(')');
100						return T_ARG;
101					}
102					BEGIN INITIAL;
103					return (')');
104				}
105				parren_count--;
106				*string_buf_ptr++ = ')';
107			}
108<ARGLIST>{MCARG}	{
109				char *yptr;
110
111				yptr = mmtext;
112				while (*yptr)
113					*string_buf_ptr++ = *yptr++;
114			}
115<ARGLIST>\,		{
116				if (string_buf_ptr != string_buf) {
117					/*
118					 * Return an argument and
119					 * rescan this comma so we
120					 * can return it as well.
121					 */
122					*string_buf_ptr = '\0';
123					mmlval.str = string_buf;
124					string_buf_ptr = string_buf;
125					unput(',');
126					return T_ARG;
127				}
128				return ',';
129			}
130{WORD}[(]		{
131				/* May be a symbol or a macro invocation. */
132				mmlval.sym = symtable_get(mmtext);
133				if (mmlval.sym->type != MACRO) {
134					stop("Expecting Macro Name",
135					     EX_DATAERR);
136				}
137				unput('(');
138				parren_count = 0;
139				BEGIN ARGLIST;
140				return T_SYMBOL;
141			}
142.			{
143				snprintf(buf, sizeof(buf), "Invalid character "
144					 "'%c'", mmtext[0]);
145				stop(buf, EX_DATAERR);
146			}
147%%
148
149int
150mmwrap()
151{
152	stop("EOF encountered in macro call", EX_DATAERR);
153}
154