Merge branch 'upstream-fixes' of git://lost.foo-projects.org/~ahkok/git/netdev-2...
[linux-2.6] / drivers / scsi / aic7xxx / aicasm / aicasm_macro_scan.l
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
65 static char string_buf[MAX_STR_CONST];
66 static char *string_buf_ptr;
67 static int  parren_count;
68 static char buf[255];
69 %}
70
71 WORD            [A-Za-z_][-A-Za-z_0-9]*
72 SPACE           [ \t]+
73 MCARG           [^(), \t]+
74
75 %x ARGLIST
76
77 %%
78 \n                      {
79                                 ++yylineno;
80                         }
81 \r                      ;
82 <ARGLIST>{SPACE}        ;
83 <ARGLIST>\(             {
84                                 parren_count++;
85                                 if (parren_count == 1) {
86                                         string_buf_ptr = string_buf;
87                                         return ('(');
88                                 }
89                                 *string_buf_ptr++ = '(';
90                         }
91 <ARGLIST>\)             {
92                                 if (parren_count == 1) {
93                                         if (string_buf_ptr != string_buf) {
94                                                 /*
95                                                  * Return an argument and
96                                                  * rescan this parren so we
97                                                  * can return it as well.
98                                                  */
99                                                 *string_buf_ptr = '\0';
100                                                 mmlval.str = string_buf;
101                                                 string_buf_ptr = string_buf;
102                                                 unput(')');
103                                                 return T_ARG;
104                                         }
105                                         BEGIN INITIAL;
106                                         return (')');
107                                 }
108                                 parren_count--;
109                                 *string_buf_ptr++ = ')';
110                         }
111 <ARGLIST>{MCARG}        {
112                                 char *yptr;
113
114                                 yptr = mmtext;
115                                 while (*yptr)
116                                         *string_buf_ptr++ = *yptr++;
117                         }
118 <ARGLIST>\,             {
119                                 if (string_buf_ptr != string_buf) {
120                                         /*
121                                          * Return an argument and
122                                          * rescan this comma so we
123                                          * can return it as well.
124                                          */
125                                         *string_buf_ptr = '\0';
126                                         mmlval.str = string_buf;
127                                         string_buf_ptr = string_buf;
128                                         unput(',');
129                                         return T_ARG;
130                                 }
131                                 return ',';
132                         }
133 {WORD}[(]               {
134                                 /* May be a symbol or a macro invocation. */
135                                 mmlval.sym = symtable_get(mmtext);
136                                 if (mmlval.sym->type != MACRO) {
137                                         stop("Expecting Macro Name",
138                                              EX_DATAERR);
139                                 }
140                                 unput('(');
141                                 parren_count = 0;
142                                 BEGIN ARGLIST;
143                                 return T_SYMBOL;
144                         }
145 .                       { 
146                                 snprintf(buf, sizeof(buf), "Invalid character "
147                                          "'%c'", mmtext[0]);
148                                 stop(buf, EX_DATAERR);
149                         }
150 %%
151
152 int
153 mmwrap()
154 {
155         stop("EOF encountered in macro call", EX_DATAERR);
156 }