Commit | Line | Data |
---|---|---|
fe14fcc3 LW |
1 | #!/bin/sh |
2 | ||
a0d0e21e LW |
3 | # Fix up yacc output to allow dynamic allocation. Since perly.c |
4 | # is now provided with the perl source, this should not be necessary. | |
5 | # | |
6 | # However, if the user wishes to use byacc, or wishes to try another | |
7 | # compiler compiler (e.g. bison or yacc), this script will get run. | |
8 | # | |
9 | # Currently, only byacc version 1.8 is supported. | |
10 | # | |
35c8bce7 LW |
11 | # Hacks to make it work with Interactive's SysVr3 Version 2.2 |
12 | # doughera@lafvax.lafayette.edu (Andy Dougherty) 3/23/91 | |
9ef589d8 LW |
13 | # |
14 | # Additional information to make the BSD section work with SunOS 4.0.2 | |
15 | # tdinger@East.Sun.COM (Tom Dinger) 4/15/1991 | |
35c8bce7 | 16 | |
fe14fcc3 LW |
17 | input=$1 |
18 | output=$2 | |
19 | tmp=/tmp/f$$ | |
20 | ||
a0d0e21e | 21 | if grep 'yaccpar 1.8 (Berkeley)' $input >/dev/null 2>&1; then |
93a17b20 | 22 | cp $input $output |
a0d0e21e LW |
23 | if test -f perly.c.diff; then |
24 | patch -F3 $output <perly.c.diff | |
25 | rm -rf $input | |
26 | fi | |
93a17b20 | 27 | exit |
a0d0e21e LW |
28 | elif grep 'yaccpar 1.9 (Berkeley)' $input >/dev/null 2>&1; then |
29 | if test -f perly.c.dif9; then | |
30 | patch -F3 $output <perly.c.dif9 | |
31 | rm -rf $input | |
32 | exit 0 | |
33 | else | |
34 | echo "Diffs from byacc-1.9 are not available." | |
35 | echo "If you wish to proceed anyway, do" | |
36 | echo "cp $input $output" | |
37 | echo "cp y.tab.h perly.h" | |
38 | echo "and re-run make. Otherwise, I will use the old perly.c" | |
39 | touch perly.c | |
40 | # Exit with error status to stop make. | |
41 | exit 1 | |
42 | fi | |
93a17b20 LW |
43 | fi |
44 | ||
35c8bce7 LW |
45 | plan="unknown" |
46 | ||
a0d0e21e LW |
47 | # Below, we check for various yaccpar outputs. |
48 | ||
35c8bce7 | 49 | # Test for BSD 4.3 version. |
9ef589d8 | 50 | # Also tests for the SunOS 4.0.2 version |
fe14fcc3 | 51 | egrep 'YYSTYPE[ ]*yyv\[ *YYMAXDEPTH *\]; |
35c8bce7 | 52 | short[ ]*yys\[ *YYMAXDEPTH *\] *; |
fe14fcc3 LW |
53 | yyps *= *&yys\[ *-1 *\]; |
54 | yypv *= *&yyv\[ *-1 *\]; | |
a0d0e21e | 55 | if *\( *\+\+yyps *>=* *&yys\[ *YYMAXDEPTH *\] *\)' $input >$tmp 2>/dev/null |
35c8bce7 | 56 | |
fe14fcc3 | 57 | set `wc -l $tmp` |
35c8bce7 LW |
58 | if test "$1" = "5"; then |
59 | plan="bsd43" | |
60 | fi | |
fe14fcc3 | 61 | |
35c8bce7 | 62 | if test "$plan" = "unknown"; then |
a0d0e21e | 63 | # Test for ISC 2.2 version (probably generic SysVr3). |
35c8bce7 LW |
64 | egrep 'YYSTYPE[ ]*yyv\[ *YYMAXDEPTH *\]; |
65 | int[ ]*yys\[ *YYMAXDEPTH *\] *; | |
66 | yyps *= *&yys\[ *-1 *\]; | |
67 | yypv *= *&yyv\[ *-1 *\]; | |
a0d0e21e | 68 | if *\( *\+\+yy_ps *>= *&yys\[ *YYMAXDEPTH *\] *\)' $input >$tmp 2>/dev/null |
35c8bce7 LW |
69 | |
70 | set `wc -l $tmp` | |
71 | if test "$1" = "5"; then | |
72 | plan="isc" | |
73 | fi | |
74 | fi | |
fe14fcc3 | 75 | |
35c8bce7 | 76 | case "$plan" in |
9ef589d8 LW |
77 | ################################################################## |
78 | # The SunOS 4.0.2 version has the comparison fixed already. | |
79 | # Also added are out of memory checks (makes porting the generated | |
80 | # code easier) For most systems, it can't hurt. -- TD | |
35c8bce7 LW |
81 | "bsd43") |
82 | echo "Patching perly.c to allow dynamic yacc stack allocation" | |
83 | echo "Assuming bsd4.3 yaccpar" | |
84 | cat >$tmp <<'END' | |
fe14fcc3 LW |
85 | /YYSTYPE[ ]*yyv\[ *YYMAXDEPTH *\];/c\ |
86 | int yymaxdepth = YYMAXDEPTH;\ | |
87 | YYSTYPE *yyv; /* where the values are stored */\ | |
88 | short *yys;\ | |
89 | short *maxyyps; | |
90 | ||
91 | /short[ ]*yys\[ *YYMAXDEPTH *\] *;/d | |
92 | ||
93 | /yyps *= *&yys\[ *-1 *\];/d | |
94 | ||
95 | /yypv *= *&yyv\[ *-1 *\];/c\ | |
96 | \ if (!yyv) {\ | |
a0d0e21e LW |
97 | \ yyv = (YYSTYPE*) safemalloc(yymaxdepth * sizeof(YYSTYPE));\ |
98 | \ yys = (short*) safemalloc(yymaxdepth * sizeof(short));\ | |
9ef589d8 LW |
99 | \ if ( !yyv || !yys ) {\ |
100 | \ yyerror( "out of memory" );\ | |
101 | \ return(1);\ | |
102 | \ }\ | |
fe14fcc3 LW |
103 | \ maxyyps = &yys[yymaxdepth];\ |
104 | \ }\ | |
105 | \ yyps = &yys[-1];\ | |
106 | \ yypv = &yyv[-1]; | |
107 | ||
108 | ||
9ef589d8 | 109 | /if *( *\+\+yyps *>=* *&yys\[ *YYMAXDEPTH *\] *)/c\ |
fe14fcc3 LW |
110 | \ if( ++yyps >= maxyyps ) {\ |
111 | \ int tv = yypv - yyv;\ | |
112 | \ int ts = yyps - yys;\ | |
113 | \ | |
114 | \ yymaxdepth *= 2;\ | |
115 | \ yyv = (YYSTYPE*)realloc((char*)yyv,\ | |
116 | \ yymaxdepth*sizeof(YYSTYPE));\ | |
117 | \ yys = (short*)realloc((char*)yys,\ | |
118 | \ yymaxdepth*sizeof(short));\ | |
9ef589d8 LW |
119 | \ if ( !yyv || !yys ) {\ |
120 | \ yyerror( "yacc stack overflow" );\ | |
121 | \ return(1);\ | |
122 | \ }\ | |
fe14fcc3 LW |
123 | \ yyps = yys + ts;\ |
124 | \ yypv = yyv + tv;\ | |
125 | \ maxyyps = &yys[yymaxdepth];\ | |
126 | \ } | |
127 | ||
128 | /yacc stack overflow.*}/d | |
129 | /yacc stack overflow/,/}/d | |
130 | END | |
35c8bce7 LW |
131 | sed -f $tmp <$input >$output ;; |
132 | ||
133 | ####################################################### | |
134 | "isc") # Interactive Systems 2.2 version | |
135 | echo "Patching perly.c to allow dynamic yacc stack allocation" | |
136 | echo "Assuming Interactive SysVr3 2.2 yaccpar" | |
137 | # Easier to simply put whole script here than to modify the | |
138 | # bsd script with sed. | |
139 | # Main changes: yaccpar sometimes uses yy_ps and yy_pv | |
140 | # which are local register variables. | |
141 | # if(++yyps > YYMAXDEPTH) had opening brace on next line. | |
142 | # I've kept that brace in along with a call to yyerror if | |
143 | # realloc fails. (Actually, I just don't know how to do | |
144 | # multi-line matches in sed.) | |
145 | cat > $tmp << 'END' | |
146 | /YYSTYPE[ ]*yyv\[ *YYMAXDEPTH *\];/c\ | |
147 | int yymaxdepth = YYMAXDEPTH;\ | |
148 | YYSTYPE *yyv; /* where the values are stored */\ | |
149 | int *yys;\ | |
150 | int *maxyyps; | |
151 | ||
152 | /int[ ]*yys\[ *YYMAXDEPTH *\] *;/d | |
153 | ||
154 | /yyps *= *&yys\[ *-1 *\];/d | |
155 | ||
156 | /yypv *= *&yyv\[ *-1 *\];/c\ | |
157 | \ if (!yyv) {\ | |
a0d0e21e LW |
158 | \ yyv = (YYSTYPE*) safemalloc(yymaxdepth * sizeof(YYSTYPE));\ |
159 | \ yys = (int*) safemalloc(yymaxdepth * sizeof(int));\ | |
35c8bce7 LW |
160 | \ maxyyps = &yys[yymaxdepth];\ |
161 | \ }\ | |
162 | \ yyps = &yys[-1];\ | |
163 | \ yypv = &yyv[-1]; | |
164 | ||
165 | /if *( *\+\+yy_ps *>= *&yys\[ *YYMAXDEPTH *\] *)/c\ | |
166 | \ if( ++yy_ps >= maxyyps ) {\ | |
167 | \ int tv = yy_pv - yyv;\ | |
168 | \ int ts = yy_ps - yys;\ | |
169 | \ | |
170 | \ yymaxdepth *= 2;\ | |
171 | \ yyv = (YYSTYPE*)realloc((char*)yyv,\ | |
172 | \ yymaxdepth*sizeof(YYSTYPE));\ | |
173 | \ yys = (int*)realloc((char*)yys,\ | |
174 | \ yymaxdepth*sizeof(int));\ | |
175 | \ yy_ps = yyps = yys + ts;\ | |
176 | \ yy_pv = yypv = yyv + tv;\ | |
177 | \ maxyyps = &yys[yymaxdepth];\ | |
178 | \ }\ | |
179 | \ if (yyv == NULL || yys == NULL) | |
180 | END | |
181 | sed -f $tmp < $input > $output ;; | |
182 | ||
183 | ###################################################### | |
184 | # Plan still unknown | |
79072805 | 185 | *) sed -e 's/Received token/ *** Received token/' $input >$output; |
35c8bce7 | 186 | esac |
fe14fcc3 | 187 | |
fe14fcc3 | 188 | rm -rf $tmp $input |